Bug#1128843: nvidia-driver: WARNING at nv_drm_revoke_modeset_permission (nvidia-drm-drv.c:1226)
Jakob Meng
jakobmeng at web.de
Thu Jun 18 13:04:38 BST 2026
Hi!
I spent a day and 65$ debugging this issue with Cursor. And hooray, the warning is gone! :) See README.md/README.html for instructions on applying the patch, and plan.md/plan.html for the root cause analysis.
The analysis looks reasonable to me, but I'm no kernel developer. A second set of eyes on the patches and RCA would be greatly appreciated. I've included links to the C function defs etc. to make reviewing easier. Hope it helps!
This is roughly what I did:
1. Wrote various dmesg warnings to files.
2a. Cloned upstream sources for nvidia-open-gpu-kernel-modules from GitHub.
2b. Cloned Debian's sources for the Linux kernel and nvidia-graphics-drivers from Salsa.
2c. Downloaded Debian's tarball for the Linux Kernel
3. Asked Cursor to find the root cause, document it and propose a fix. Observe thinking. Supply more info or sources.
4. Apply patch, run dkms remove… and dkms install…. Regenerate initramfs. Reboot. Check dmesg.
5. Run dkms build… and interrupt it before finishing (to keep the build folder).
6. Provide build folder in /var/lib/dkms/nvidia-current/525.147.05/build to Cursor, and repeat step 3ff.
7. Proof-read and enhance documentation. Repeat, repeat…
Iterating over the docs took as long as the RCA itself. In fact, the patch was ready after a few hours, but it took me a few more to realize that. Late at night, Cursor started insisting that the patch was correct 😳🤔🤣. After bumping the module version number it suddenly worked. It turns out, dkms build… and dkms install… is not enough when the version does not change; the patched kernel module will not be installed. Thus, run dkms remove… first to remove the old modules. Also, regenerate the initramfs after dkms install…, if it contains the nvidia modules.
Best,
Jakob
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#!/bin/sh
PATH="${PATH}:/bin:/sbin:/usr/bin"
# make sure we are in the directory containing this script
SCRIPTDIR=`dirname $0`
cd $SCRIPTDIR
CC="$1"
ARCH=$2
SOURCES=$3
HEADERS=$SOURCES/include
OUTPUT=$4
XEN_PRESENT=1
PREEMPT_RT_PRESENT=0
# We also use conftest.sh on FreeBSD to check for which symbols are provided
# by the linux kernel programming interface (linuxkpi) when compiling nvidia-drm.ko
OS_FREEBSD=0
if [ "$OS" = "FreeBSD" ] ; then
OS_FREEBSD=1
fi
# VGX_BUILD parameter defined only for VGX builds (vGPU Host driver)
# VGX_KVM_BUILD parameter defined only vGPU builds on KVM hypervisor
# GRID_BUILD parameter defined only for GRID builds (GRID Guest driver)
# GRID_BUILD_CSP parameter defined only for GRID CSP builds (GRID Guest driver for CSPs)
test_xen() {
#
# Determine if the target kernel is a Xen kernel. It used to be
# sufficient to check for CONFIG_XEN, but the introduction of
# modular para-virtualization (CONFIG_PARAVIRT, etc.) and
# Xen guest support, it is no longer possible to determine the
# target environment at build time. Therefore, if both
# CONFIG_XEN and CONFIG_PARAVIRT are present, text_xen() treats
# the kernel as a stand-alone kernel.
#
if ! test_configuration_option CONFIG_XEN ||
test_configuration_option CONFIG_PARAVIRT; then
XEN_PRESENT=0
fi
}
append_conftest() {
#
# Echo data from stdin: this is a transitional function to make it easier
# to port conftests from drivers with parallel conftest generation to
# older driver versions
#
while read LINE; do
echo ${LINE}
done
}
test_header_presence() {
#
# Determine if the given header file (which may or may not be
# present) is provided by the target kernel.
#
# Input:
# $1: relative file path
#
# This routine creates an upper case, underscore version of each of the
# relative file paths, and uses that as the token to either define or
# undefine in a C header file. For example, linux/fence.h becomes
# NV_LINUX_FENCE_H_PRESENT, and that is either defined or undefined, in the
# output (which goes to stdout, just like the rest of this file).
TEST_CFLAGS="-E -M $CFLAGS"
file="$1"
file_define=NV_`echo $file | tr '/.\-a-z' '___A-Z'`_PRESENT
CODE="#include <$file>"
if echo "$CODE" | $CC $TEST_CFLAGS - > /dev/null 2>&1; then
echo "#define $file_define"
else
# If preprocessing failed, it could have been because the header
# file under test is not present, or because it is present but
# depends upon the inclusion of other header files. Attempting
# preprocessing again with -MG will ignore a missing header file
# but will still fail if the header file is present.
if echo "$CODE" | $CC $TEST_CFLAGS -MG - > /dev/null 2>&1; then
echo "#undef $file_define"
else
echo "#define $file_define"
fi
fi
}
build_cflags() {
ISYSTEM=`$CC -print-file-name=include 2> /dev/null`
BASE_CFLAGS="-O2 -D__KERNEL__ \
-DKBUILD_BASENAME=\"#conftest$$\" -DKBUILD_MODNAME=\"#conftest$$\" \
-nostdinc -isystem $ISYSTEM \
-Wno-implicit-function-declaration -Wno-strict-prototypes"
if [ "$OUTPUT" != "$SOURCES" ]; then
OUTPUT_CFLAGS="-I$OUTPUT/include2 -I$OUTPUT/include"
if [ -f "$OUTPUT/include/generated/autoconf.h" ]; then
AUTOCONF_FILE="$OUTPUT/include/generated/autoconf.h"
else
AUTOCONF_FILE="$OUTPUT/include/linux/autoconf.h"
fi
else
if [ -f "$HEADERS/generated/autoconf.h" ]; then
AUTOCONF_FILE="$HEADERS/generated/autoconf.h"
else
AUTOCONF_FILE="$HEADERS/linux/autoconf.h"
fi
fi
test_xen
if [ "$XEN_PRESENT" != "0" ]; then
MACH_CFLAGS="-I$HEADERS/asm/mach-xen"
fi
KERNEL_ARCH="$ARCH"
if [ "$ARCH" = "i386" -o "$ARCH" = "x86_64" ]; then
if [ -d "$SOURCES/arch/x86" ]; then
KERNEL_ARCH="x86"
fi
fi
SOURCE_HEADERS="$HEADERS"
SOURCE_ARCH_HEADERS="$SOURCES/arch/$KERNEL_ARCH/include"
OUTPUT_HEADERS="$OUTPUT/include"
OUTPUT_ARCH_HEADERS="$OUTPUT/arch/$KERNEL_ARCH/include"
# Look for mach- directories on this arch, and add it to the list of
# includes if that platform is enabled in the configuration file, which
# may have a definition like this:
# #define CONFIG_ARCH_<MACHUPPERCASE> 1
for _mach_dir in `ls -1d $SOURCES/arch/$KERNEL_ARCH/mach-* 2>/dev/null`; do
_mach=`echo $_mach_dir | \
sed -e "s,$SOURCES/arch/$KERNEL_ARCH/mach-,," | \
tr 'a-z' 'A-Z'`
grep "CONFIG_ARCH_$_mach \+1" $AUTOCONF_FILE > /dev/null 2>&1
if [ $? -eq 0 ]; then
MACH_CFLAGS="$MACH_CFLAGS -I$_mach_dir/include"
fi
done
if [ "$ARCH" = "arm" ]; then
MACH_CFLAGS="$MACH_CFLAGS -D__LINUX_ARM_ARCH__=7"
fi
# Add the mach-default includes (only found on x86/older kernels)
MACH_CFLAGS="$MACH_CFLAGS -I$SOURCE_ARCH_HEADERS/asm/mach-default"
MACH_CFLAGS="$MACH_CFLAGS -I$SOURCE_HEADERS/asm-$KERNEL_ARCH/mach-default"
CFLAGS="$BASE_CFLAGS $MACH_CFLAGS $OUTPUT_CFLAGS -include $AUTOCONF_FILE"
CFLAGS="$CFLAGS -I$SOURCE_ARCH_HEADERS"
CFLAGS="$CFLAGS -I$SOURCE_ARCH_HEADERS/uapi"
CFLAGS="$CFLAGS -I$OUTPUT_ARCH_HEADERS/generated"
CFLAGS="$CFLAGS -I$OUTPUT_ARCH_HEADERS/generated/uapi"
CFLAGS="$CFLAGS -I$SOURCE_HEADERS"
CFLAGS="$CFLAGS -I$SOURCE_HEADERS/uapi"
CFLAGS="$CFLAGS -I$SOURCE_HEADERS/xen"
CFLAGS="$CFLAGS -I$OUTPUT_HEADERS/generated/uapi"
if [ -n "$BUILD_PARAMS" ]; then
CFLAGS="$CFLAGS -D$BUILD_PARAMS"
fi
# Check if gcc supports asm goto and set CC_HAVE_ASM_GOTO if it does.
# Older kernels perform this check and set this flag in Kbuild, and since
# conftest.sh runs outside of Kbuild it ends up building without this flag.
# Starting with commit e9666d10a5677a494260d60d1fa0b73cc7646eb3 this test
# is done within Kconfig, and the preprocessor flag is no longer needed.
GCC_GOTO_SH="$SOURCES/build/gcc-goto.sh"
if [ -f "$GCC_GOTO_SH" ]; then
# Newer versions of gcc-goto.sh don't print anything on success, but
# this is okay, since it's no longer necessary to set CC_HAVE_ASM_GOTO
# based on the output of those versions of gcc-goto.sh.
if [ `/bin/sh "$GCC_GOTO_SH" "$CC"` = "y" ]; then
CFLAGS="$CFLAGS -DCC_HAVE_ASM_GOTO"
fi
fi
#
# If CONFIG_HAVE_FENTRY is enabled and gcc supports -mfentry flags then set
# CC_USING_FENTRY and add -mfentry into cflags.
#
# linux/ftrace.h file indirectly gets included into the conftest source and
# fails to get compiled, because conftest.sh runs outside of Kbuild it ends
# up building without -mfentry and CC_USING_FENTRY flags.
#
grep "CONFIG_HAVE_FENTRY \+1" $AUTOCONF_FILE > /dev/null 2>&1
if [ $? -eq 0 ]; then
echo "" > conftest$$.c
$CC -mfentry -c -x c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
rm -f conftest$$.o
CFLAGS="$CFLAGS -mfentry -DCC_USING_FENTRY"
fi
fi
}
CONFTEST_PREAMBLE="#include \"conftest/headers.h\"
#if defined(NV_LINUX_KCONFIG_H_PRESENT)
#include <linux/kconfig.h>
#endif
#if defined(CONFIG_XEN) && \
defined(CONFIG_XEN_INTERFACE_VERSION) && !defined(__XEN_INTERFACE_VERSION__)
#define __XEN_INTERFACE_VERSION__ CONFIG_XEN_INTERFACE_VERSION
#endif
#if defined(CONFIG_KASAN) && defined(CONFIG_ARM64)
#if defined(CONFIG_KASAN_SW_TAGS)
#define KASAN_SHADOW_SCALE_SHIFT 4
#else
#define KASAN_SHADOW_SCALE_SHIFT 3
#endif
#endif"
# FreeBSD's Linux compatibility does not have autoconf.h defined
# anywhere yet, only add this part on Linux
if [ ${OS_FREEBSD} -ne 1 ] ; then
CONFTEST_PREAMBLE="${CONFTEST_PREAMBLE}
#if defined(NV_GENERATED_AUTOCONF_H_PRESENT)
#include <generated/autoconf.h>
#else
#include <linux/autoconf.h>
#endif"
fi
test_configuration_option() {
#
# Check to see if the given configuration option is defined
#
get_configuration_option $1 >/dev/null 2>&1
return $?
}
set_configuration() {
#
# Set a specific configuration option. This function is called to always
# enable a configuration, in order to verify whether the test code for that
# configuration is no longer required and the corresponding
# conditionally-compiled code in the driver can be removed.
#
DEF="$1"
if [ "$3" = "" ]
then
VAL=""
CAT="$2"
else
VAL="$2"
CAT="$3"
fi
echo "#define ${DEF} ${VAL}" | append_conftest "${CAT}"
}
unset_configuration() {
#
# Un-set a specific configuration option. This function is called to
# always disable a configuration, in order to verify whether the test
# code for that configuration is no longer required and the corresponding
# conditionally-compiled code in the driver can be removed.
#
DEF="$1"
CAT="$2"
echo "#undef ${DEF}" | append_conftest "${CAT}"
}
compile_check_conftest() {
#
# Compile the current conftest C file and check+output the result
#
CODE="$1"
DEF="$2"
VAL="$3"
CAT="$4"
echo "$CONFTEST_PREAMBLE
$CODE" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
rm -f conftest$$.o
if [ "${CAT}" = "functions" ]; then
#
# The logic for "functions" compilation tests is inverted compared to
# other compilation steps: if the function is present, the code
# snippet will fail to compile because the function call won't match
# the prototype. If the function is not present, the code snippet
# will produce an object file with the function as an unresolved
# symbol.
#
echo "#undef ${DEF}" | append_conftest "${CAT}"
else
echo "#define ${DEF} ${VAL}" | append_conftest "${CAT}"
fi
return
else
if [ "${CAT}" = "functions" ]; then
echo "#define ${DEF} ${VAL}" | append_conftest "${CAT}"
else
echo "#undef ${DEF}" | append_conftest "${CAT}"
fi
return
fi
}
check_symbol_exists() {
# Check that the given symbol is available
SYMBOL="$1"
TAB=' '
if [ ${OS_FREEBSD} -ne 1 ] ; then
# Linux:
# ------
#
# Check Module.symvers to see whether the given symbol is present.
#
if grep -e "${TAB}${SYMBOL}${TAB}.*${TAB}EXPORT_SYMBOL.*\$" \
"$OUTPUT/Module.symvers" >/dev/null 2>&1; then
return 0
fi
else
# FreeBSD:
# ------
#
# Check if any of the linuxkpi or drm kernel module files contain
# references to this symbol.
# Get the /boot/kernel/ and /boot/modules paths, convert the list to a
# space separated list instead of semicolon separated so we can iterate
# over it.
if [ -z "${CONFTEST_BSD_KMODPATHS}" ] ; then
KMODPATHS=`sysctl -n kern.module_path | sed -e "s/;/ /g"`
else
KMODPATHS="${CONFTEST_BSD_KMODPATHS}"
fi
for KMOD in linuxkpi.ko linuxkpi_gplv2.ko drm.ko dmabuf.ko ; do
for KMODPATH in $KMODPATHS; do
if [ -e "$KMODPATH/$KMOD" ] ; then
if nm "$KMODPATH/$KMOD" | grep "$SYMBOL" >/dev/null 2>&1 ; then
return 0
fi
fi
done
done
fi
return 1
}
export_symbol_present_conftest() {
SYMBOL="$1"
if check_symbol_exists $SYMBOL; then
echo "#define NV_IS_EXPORT_SYMBOL_PRESENT_$SYMBOL 1" |
append_conftest "symbols"
else
# May be a false negative if Module.symvers is absent or incomplete,
# or if the Module.symvers format changes.
echo "#define NV_IS_EXPORT_SYMBOL_PRESENT_$SYMBOL 0" |
append_conftest "symbols"
fi
}
export_symbol_gpl_conftest() {
#
# Check Module.symvers to see whether the given symbol is present and its
# export type is GPL-only (including deprecated GPL-only symbols).
#
SYMBOL="$1"
TAB=' '
if grep -e "${TAB}${SYMBOL}${TAB}.*${TAB}EXPORT_\(UNUSED_\)*SYMBOL_GPL\s*\$" \
"$OUTPUT/Module.symvers" >/dev/null 2>&1; then
echo "#define NV_IS_EXPORT_SYMBOL_GPL_$SYMBOL 1" |
append_conftest "symbols"
else
# May be a false negative if Module.symvers is absent or incomplete,
# or if the Module.symvers format changes.
echo "#define NV_IS_EXPORT_SYMBOL_GPL_$SYMBOL 0" |
append_conftest "symbols"
fi
}
get_configuration_option() {
#
# Print the value of given configuration option, if defined
#
RET=1
OPTION=$1
OLD_FILE="linux/autoconf.h"
NEW_FILE="generated/autoconf.h"
FILE=""
if [ -f $HEADERS/$NEW_FILE -o -f $OUTPUT/include/$NEW_FILE ]; then
FILE=$NEW_FILE
elif [ -f $HEADERS/$OLD_FILE -o -f $OUTPUT/include/$OLD_FILE ]; then
FILE=$OLD_FILE
fi
if [ -n "$FILE" ]; then
#
# We are looking at a configured source tree; verify
# that its configuration includes the given option
# via a compile check, and print the option's value.
#
if [ -f $HEADERS/$FILE ]; then
INCLUDE_DIRECTORY=$HEADERS
elif [ -f $OUTPUT/include/$FILE ]; then
INCLUDE_DIRECTORY=$OUTPUT/include
else
return 1
fi
echo "#include <$FILE>
#ifndef $OPTION
#error $OPTION not defined!
#endif
$OPTION
" > conftest$$.c
$CC -E -P -I$INCLUDE_DIRECTORY -o conftest$$ conftest$$.c > /dev/null 2>&1
if [ -e conftest$$ ]; then
tr -d '\r\n\t ' < conftest$$
RET=$?
fi
rm -f conftest$$.c conftest$$
else
CONFIG=$OUTPUT/.config
if [ -f $CONFIG ] && grep "^$OPTION=" $CONFIG; then
grep "^$OPTION=" $CONFIG | cut -f 2- -d "="
RET=$?
fi
fi
return $RET
}
check_for_ib_peer_memory_symbols() {
kernel_dir="$1"
module_symvers="${kernel_dir}/Module.symvers"
sym_ib_register="ib_register_peer_memory_client"
sym_ib_unregister="ib_unregister_peer_memory_client"
tab=' '
# Return 0 for true(no errors), 1 for false
if [ ! -f "${module_symvers}" ]; then
return 1
fi
if grep -e "${tab}${sym_ib_register}${tab}.*${tab}EXPORT_SYMBOL.*\$" \
"${module_symvers}" > /dev/null 2>&1 &&
grep -e "${tab}${sym_ib_unregister}${tab}.*${tab}EXPORT_SYMBOL.*\$" \
"${module_symvers}" > /dev/null 2>&1; then
return 0
else
return 1
fi
}
compile_test() {
case "$1" in
set_memory_uc)
#
# Determine if the set_memory_uc() function is present.
# It does not exist on all architectures.
#
CODE="
#include <linux/types.h>
#if defined(NV_ASM_SET_MEMORY_H_PRESENT)
#if defined(NV_ASM_PGTABLE_TYPES_H_PRESENT)
#include <asm/pgtable_types.h>
#endif
#if defined(NV_ASM_PAGE_H_PRESENT)
#include <asm/page.h>
#endif
#include <asm/set_memory.h>
#else
#include <asm/cacheflush.h>
#endif
void conftest_set_memory_uc(void) {
set_memory_uc();
}"
compile_check_conftest "$CODE" "NV_SET_MEMORY_UC_PRESENT" "" "functions"
;;
set_memory_array_uc)
#
# Determine if the set_memory_array_uc() function is present.
# It does not exist on all architectures.
#
CODE="
#include <linux/types.h>
#if defined(NV_ASM_SET_MEMORY_H_PRESENT)
#if defined(NV_ASM_PGTABLE_TYPES_H_PRESENT)
#include <asm/pgtable_types.h>
#endif
#if defined(NV_ASM_PAGE_H_PRESENT)
#include <asm/page.h>
#endif
#include <asm/set_memory.h>
#else
#include <asm/cacheflush.h>
#endif
void conftest_set_memory_array_uc(void) {
set_memory_array_uc();
}"
compile_check_conftest "$CODE" "NV_SET_MEMORY_ARRAY_UC_PRESENT" "" "functions"
;;
sysfs_slab_unlink)
#
# Determine if the sysfs_slab_unlink() function is present.
#
# This test is useful to check for the presence a fix for the deferred
# kmem_cache destroy feature (see nvbug: 2543505).
#
# Added by commit d50d82faa0c9 ("slub: fix failure when we delete and
# create a slab cache") in 4.18 (2018-06-27).
#
CODE="
#include <linux/slab.h>
void conftest_sysfs_slab_unlink(void) {
sysfs_slab_unlink();
}"
compile_check_conftest "$CODE" "NV_SYSFS_SLAB_UNLINK_PRESENT" "" "functions"
;;
list_is_first)
#
# Determine if the list_is_first() function is present.
#
# Added by commit 70b44595eafe ("mm, compaction: use free lists
# to quickly locate a migration source") in 5.1 (2019-03-05)
#
CODE="
#include <linux/list.h>
void conftest_list_is_first(void) {
list_is_first();
}"
compile_check_conftest "$CODE" "NV_LIST_IS_FIRST_PRESENT" "" "functions"
;;
set_pages_uc)
#
# Determine if the set_pages_uc() function is present.
# It does not exist on all architectures.
#
CODE="
#include <linux/types.h>
#if defined(NV_ASM_SET_MEMORY_H_PRESENT)
#if defined(NV_ASM_PGTABLE_TYPES_H_PRESENT)
#include <asm/pgtable_types.h>
#endif
#if defined(NV_ASM_PAGE_H_PRESENT)
#include <asm/page.h>
#endif
#include <asm/set_memory.h>
#else
#include <asm/cacheflush.h>
#endif
void conftest_set_pages_uc(void) {
set_pages_uc();
}"
compile_check_conftest "$CODE" "NV_SET_PAGES_UC_PRESENT" "" "functions"
;;
set_pages_array_uc)
#
# Determine if the set_pages_array_uc() function is present.
# It does not exist on all architectures.
#
# Added by commit 0f3507555f6f ("x86, CPA: Add set_pages_arrayuc
# and set_pages_array_wb") in v2.6.30.
#
CODE="
#include <linux/types.h>
#if defined(NV_ASM_SET_MEMORY_H_PRESENT)
#if defined(NV_ASM_PGTABLE_TYPES_H_PRESENT)
#include <asm/pgtable_types.h>
#endif
#if defined(NV_ASM_PAGE_H_PRESENT)
#include <asm/page.h>
#endif
#include <asm/set_memory.h>
#else
#include <asm/cacheflush.h>
#endif
void conftest_set_pages_array_uc(void) {
set_pages_array_uc();
}"
compile_check_conftest "$CODE" "NV_SET_PAGES_ARRAY_UC_PRESENT" "" "functions"
;;
flush_cache_all)
#
# Determine if flush_cache_all() function is present
#
# flush_cache_all() was removed by commit id
# 68234df4ea79 ("arm64: kill flush_cache_all()") in 4.2 (2015-04-20)
# for aarch64
#
CODE="
#include <asm/cacheflush.h>
int conftest_flush_cache_all(void) {
return flush_cache_all();
}"
compile_check_conftest "$CODE" "NV_FLUSH_CACHE_ALL_PRESENT" "" "functions"
;;
pci_get_domain_bus_and_slot)
#
# Determine if the pci_get_domain_bus_and_slot() function
# is present.
#
# Added by commit 3c299dc22635 ("PCI: add
# pci_get_domain_bus_and_slot function") in 2.6.33 but aarch64
# support was added by commit d1e6dc91b532 ("arm64: Add
# architectural support for PCI") in 3.18.
#
CODE="
#include <linux/pci.h>
void conftest_pci_get_domain_bus_and_slot(void) {
pci_get_domain_bus_and_slot();
}"
compile_check_conftest "$CODE" "NV_PCI_GET_DOMAIN_BUS_AND_SLOT_PRESENT" "" "functions"
;;
pci_bus_address)
#
# Determine if the pci_bus_address() function is
# present.
#
# Added by commit 06cf56e497c8 ("PCI: Add pci_bus_address() to
# get bus address of a BAR") in v3.14
#
CODE="
#include <linux/pci.h>
void conftest_pci_bus_address(void) {
pci_bus_address();
}"
compile_check_conftest "$CODE" "NV_PCI_BUS_ADDRESS_PRESENT" "" "functions"
;;
hash__remap_4k_pfn)
#
# Determine if the hash__remap_4k_pfn() function is
# present.
#
# Added by commit 6cc1a0ee4ce2 ("powerpc/mm/radix: Add radix
# callback for pmd accessors") in v4.7 (committed 2016-04-29).
# Present only in arch/powerpc
#
CODE="
#if defined(NV_ASM_BOOK3S_64_HASH_64K_H_PRESENT)
#include <linux/mm.h>
#include <asm/book3s/64/hash-64k.h>
#endif
void conftest_hash__remap_4k_pfn(void) {
hash__remap_4k_pfn();
}"
compile_check_conftest "$CODE" "NV_HASH__REMAP_4K_PFN_PRESENT" "" "functions"
;;
register_cpu_notifier)
#
# Determine if register_cpu_notifier() is present
#
# Removed by commit 530e9b76ae8f ("cpu/hotplug: Remove obsolete
# cpu hotplug register/unregister functions") in v4.10
# (2016-12-21)
#
CODE="
#include <linux/cpu.h>
void conftest_register_cpu_notifier(void) {
register_cpu_notifier();
}"
compile_check_conftest "$CODE" "NV_REGISTER_CPU_NOTIFIER_PRESENT" "" "functions"
;;
cpuhp_setup_state)
#
# Determine if cpuhp_setup_state() is present
#
# Added by commit 5b7aa87e0482 ("cpu/hotplug: Implement
# setup/removal interface") in v4.6 (commited 2016-02-26)
#
# It is used as a replacement for register_cpu_notifier
CODE="
#include <linux/cpu.h>
void conftest_cpuhp_setup_state(void) {
cpuhp_setup_state();
}"
compile_check_conftest "$CODE" "NV_CPUHP_SETUP_STATE_PRESENT" "" "functions"
;;
ioremap_cache)
#
# Determine if the ioremap_cache() function is present.
# It does not exist on all architectures.
#
CODE="
#include <asm/io.h>
void conftest_ioremap_cache(void) {
ioremap_cache();
}"
compile_check_conftest "$CODE" "NV_IOREMAP_CACHE_PRESENT" "" "functions"
;;
ioremap_wc)
#
# Determine if the ioremap_wc() function is present.
# It does not exist on all architectures.
#
CODE="
#include <asm/io.h>
void conftest_ioremap_wc(void) {
ioremap_wc();
}"
compile_check_conftest "$CODE" "NV_IOREMAP_WC_PRESENT" "" "functions"
;;
ioremap_driver_hardened)
#
# Determine if the ioremap_driver_hardened() function is present.
# It does not exist on all architectures.
# TODO: Update the commit ID once the API is upstreamed.
#
CODE="
#include <asm/io.h>
void conftest_ioremap_driver_hardened(void) {
ioremap_driver_hardened();
}"
compile_check_conftest "$CODE" "NV_IOREMAP_DRIVER_HARDENED_PRESENT" "" "functions"
;;
ioremap_driver_hardened_wc)
#
# Determine if the ioremap_driver_hardened_wc() function is present.
# It does not exist on all architectures.
# TODO: Update the commit ID once the API is upstreamed.
#
CODE="
#include <asm/io.h>
void conftest_ioremap_driver_hardened_wc(void) {
ioremap_driver_hardened_wc();
}"
compile_check_conftest "$CODE" "NV_IOREMAP_DRIVER_HARDENED_WC_PRESENT" "" "functions"
;;
ioremap_cache_shared)
#
# Determine if the ioremap_cache_shared() function is present.
# It does not exist on all architectures.
# TODO: Update the commit ID once the API is upstreamed.
#
CODE="
#include <asm/io.h>
void conftest_ioremap_cache_shared(void) {
ioremap_cache_shared();
}"
compile_check_conftest "$CODE" "NV_IOREMAP_CACHE_SHARED_PRESENT" "" "functions"
;;
dom0_kernel_present)
# Add config parameter if running on DOM0.
if [ -n "$VGX_BUILD" ]; then
echo "#define NV_DOM0_KERNEL_PRESENT" | append_conftest "generic"
else
echo "#undef NV_DOM0_KERNEL_PRESENT" | append_conftest "generic"
fi
return
;;
nvidia_vgpu_kvm_build)
# Add config parameter if running on KVM host.
if [ -n "$VGX_KVM_BUILD" ]; then
echo "#define NV_VGPU_KVM_BUILD" | append_conftest "generic"
else
echo "#undef NV_VGPU_KVM_BUILD" | append_conftest "generic"
fi
return
;;
vfio_register_notifier)
#
# Check number of arguments required.
#
# New parameters added by commit 22195cbd3451 ("vfio:
# vfio_register_notifier: classify iommu notifier") in v4.10
#
echo "$CONFTEST_PREAMBLE
#include <linux/vfio.h>
int conftest_vfio_register_notifier(void) {
return vfio_register_notifier((struct device *) NULL, (struct notifier_block *) NULL);
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
echo "#define NV_VFIO_NOTIFIER_ARGUMENT_COUNT 2" | append_conftest "functions"
rm -f conftest$$.o
return
else
echo "#define NV_VFIO_NOTIFIER_ARGUMENT_COUNT 4" | append_conftest "functions"
return
fi
;;
vfio_info_add_capability_has_cap_type_id_arg)
#
# Check if vfio_info_add_capability() has cap_type_id parameter.
#
# Removed by commit dda01f787df9 ("vfio: Simplify capability
# helper") in v4.16 (2017-12-12)
#
CODE="
#include <linux/vfio.h>
int vfio_info_add_capability(struct vfio_info_cap *caps,
int cap_type_id,
void *cap_type) {
return 0;
}"
compile_check_conftest "$CODE" "NV_VFIO_INFO_ADD_CAPABILITY_HAS_CAP_TYPE_ID_ARGS" "" "types"
;;
nvidia_grid_build)
if [ -n "$GRID_BUILD" ]; then
echo "#define NV_GRID_BUILD" | append_conftest "generic"
else
echo "#undef NV_GRID_BUILD" | append_conftest "generic"
fi
return
;;
nvidia_grid_csp_build)
if [ -n "$GRID_BUILD_CSP" ]; then
echo "#define NV_GRID_BUILD_CSP $GRID_BUILD_CSP" | append_conftest "generic"
else
echo "#undef NV_GRID_BUILD_CSP" | append_conftest "generic"
fi
return
;;
vm_fault_has_address)
#
# Determine if the 'vm_fault' structure has an 'address', or a
# 'virtual_address' field. The .virtual_address field was
# effectively renamed to .address:
#
# 'address' added by commit 82b0f8c39a38 ("mm: join
# struct fault_env and vm_fault") in v4.10 (2016-12-14)
#
# 'virtual_address' removed by commit 1a29d85eb0f1 ("mm: use
# vmf->address instead of of vmf->virtual_address") in v4.10
# (2016-12-14)
#
CODE="
#include <linux/mm.h>
int conftest_vm_fault_has_address(void) {
return offsetof(struct vm_fault, address);
}"
compile_check_conftest "$CODE" "NV_VM_FAULT_HAS_ADDRESS" "" "types"
;;
kmem_cache_has_kobj_remove_work)
#
# Determine if the 'kmem_cache' structure has 'kobj_remove_work'.
#
# 'kobj_remove_work' was added by commit 3b7b314053d02 ("slub: make
# sysfs file removal asynchronous") in v4.12 (2017-06-23). This
# commit introduced a race between kmem_cache destroy and create
# which we need to workaround in our driver (see nvbug: 2543505).
# Also see comment for sysfs_slab_unlink conftest.
#
CODE="
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/slub_def.h>
int conftest_kmem_cache_has_kobj_remove_work(void) {
return offsetof(struct kmem_cache, kobj_remove_work);
}"
compile_check_conftest "$CODE" "NV_KMEM_CACHE_HAS_KOBJ_REMOVE_WORK" "" "types"
;;
mdev_uuid)
#
# Determine if mdev_uuid() function is present or not
#
# Added by commit 99e3123e3d72 ("vfio-mdev: Make mdev_device
# private and abstract interfaces") in v4.10
#
CODE="
#include <linux/pci.h>
#include <linux/mdev.h>
void conftest_mdev_uuid() {
mdev_uuid();
}"
compile_check_conftest "$CODE" "NV_MDEV_UUID_PRESENT" "" "functions"
#
# Determine if mdev_uuid() returns 'const guid_t *'.
#
# mdev_uuid() function prototype updated to return 'const guid_t *'
# by commit 278bca7f318e ("vfio-mdev: Switch to use new generic UUID
# API") in v5.1 (2019-01-10).
#
CODE="
#include <linux/pci.h>
#include <linux/mdev.h>
const guid_t *conftest_mdev_uuid_return_guid_ptr(struct mdev_device *mdev) {
return mdev_uuid(mdev);
}"
compile_check_conftest "$CODE" "NV_MDEV_UUID_RETURN_GUID_PTR" "" "types"
;;
mdev_dev)
#
# Determine if mdev_dev() function is present or not
#
# Added by commit 99e3123e3d72 ("vfio-mdev: Make mdev_device
# private and abstract interfaces") in v4.10
#
CODE="
#include <linux/pci.h>
#include <linux/mdev.h>
void conftest_mdev_dev() {
mdev_dev();
}"
compile_check_conftest "$CODE" "NV_MDEV_DEV_PRESENT" "" "functions"
;;
mdev_get_type_group_id)
#
# Determine if mdev_get_type_group_id() function is present or not
#
# Added by commit 15fcc44be0c7a ("vfio/mdev: Add
# mdev/mtype_get_type_group_id()") in v5.13
#
CODE="
#include <linux/pci.h>
#include <linux/mdev.h>
void conftest_mdev_get_type_group_id() {
mdev_get_type_group_id();
}"
compile_check_conftest "$CODE" "NV_MDEV_GET_TYPE_GROUP_ID_PRESENT" "" "functions"
;;
vfio_device_mig_state)
#
# Determine if vfio_device_mig_state enum is present or not
#
# Added by commit 115dcec65f61d ("vfio: Define device
# migration protocol v2") in v5.18
#
CODE="
#include <linux/pci.h>
#include <linux/vfio.h>
enum vfio_device_mig_state device_state;
"
compile_check_conftest "$CODE" "NV_VFIO_DEVICE_MIG_STATE_PRESENT" "" "types"
;;
vfio_migration_ops)
#
# Determine if vfio_migration_ops struct is present or not
#
# Added by commit 6e97eba8ad874 ("vfio: Split migration ops
# from main device ops") in v6.0
#
CODE="
#include <linux/pci.h>
#include <linux/vfio.h>
struct vfio_migration_ops mig_ops;
"
compile_check_conftest "$CODE" "NV_VFIO_MIGRATION_OPS_PRESENT" "" "types"
;;
vfio_precopy_info)
#
# Determine if vfio_precopy_info struct is present or not
#
# Added by commit 4db52602a6074 ("vfio: Extend the device migration
# protocol with PRE_COPY" in v6.2
#
CODE="
#include <linux/vfio.h>
struct vfio_precopy_info precopy_info;
"
compile_check_conftest "$CODE" "NV_VFIO_PRECOPY_INFO_PRESENT" "" "types"
;;
vfio_log_ops)
#
# Determine if vfio_log_ops struct is present or not
#
# Added by commit 80c4b92a2dc48 ("vfio: Introduce the DMA
# logging feature support") in v6.1
#
CODE="
#include <linux/pci.h>
#include <linux/vfio.h>
struct vfio_log_ops log_ops;
"
compile_check_conftest "$CODE" "NV_VFIO_LOG_OPS_PRESENT" "" "types"
;;
vfio_migration_ops_has_migration_get_data_size)
#
# Determine if vfio_migration_ops struct has .migration_get_data_size field.
#
# Added by commit in 4e016f969529f ("vfio: Add an option to get migration
# data size") in v6.2 kernel.
#
CODE="
#include <linux/pci.h>
#include <linux/vfio.h>
int conftest_mdev_vfio_migration_ops_has_migration_get_data_size(void) {
return offsetof(struct vfio_migration_ops, migration_get_data_size);
}"
compile_check_conftest "$CODE" "NV_VFIO_MIGRATION_OPS_HAS_MIGRATION_GET_DATA_SIZE" "" "types"
;;
mdev_parent_ops)
#
# Determine if the struct mdev_parent_ops type is present.
#
# Added by commit 42930553a7c1 ("vfio-mdev: de-polute the
# namespace, rename parent_device & parent_ops") in v4.10
#
CODE="
#include <linux/pci.h>
#include <linux/mdev.h>
struct mdev_parent_ops conftest_mdev_parent_ops;
"
compile_check_conftest "$CODE" "NV_MDEV_PARENT_OPS_STRUCT_PRESENT" "" "types"
;;
mdev_parent)
#
# Determine if the struct mdev_parent type is present.
#
# Added by commit 89345d5177aa ("vfio/mdev: embedd struct mdev_parent in
# the parent data structure") in v6.1
#
CODE="
#include <linux/pci.h>
#include <linux/mdev.h>
struct mdev_parent conftest_mdev_parent;
"
compile_check_conftest "$CODE" "NV_MDEV_PARENT_STRUCT_PRESENT" "" "types"
;;
mdev_parent_dev)
#
# Determine if mdev_parent_dev() function is present or not
#
# Added by commit 9372e6feaafb ("vfio-mdev: Make mdev_parent
# private") in v4.10
#
CODE="
#include <linux/pci.h>
#include <linux/mdev.h>
void conftest_mdev_parent_dev() {
mdev_parent_dev();
}"
compile_check_conftest "$CODE" "NV_MDEV_PARENT_DEV_PRESENT" "" "functions"
;;
vfio_free_device)
#
# Determine if vfio_free_device() function is present or not
#
# Removed by commit 913447d06f03 ("vfio: Remove vfio_free_device")
# in v6.2
#
CODE="
#include <linux/pci.h>
#include <linux/vfio.h>
void conftest_vfio_free_device() {
vfio_free_device();
}"
compile_check_conftest "$CODE" "NV_VFIO_FREE_DEVICE_PRESENT" "" "functions"
;;
mdev_from_dev)
#
# Determine if mdev_from_dev() function is present or not.
#
# Added by commit 99e3123e3d72 ("vfio-mdev: Make mdev_device
# private and abstract interfaces") in v4.10 (2016-12-30)
#
CODE="
#include <linux/pci.h>
#include <linux/mdev.h>
void conftest_mdev_from_dev() {
mdev_from_dev();
}"
compile_check_conftest "$CODE" "NV_MDEV_FROM_DEV_PRESENT" "" "functions"
;;
mdev_set_iommu_device)
#
# Determine if mdev_set_iommu_device() function is present or not.
#
# Added by commit 8ac13175cbe9 ("vfio/mdev: Add iommu related member
# in mdev_device) in v5.1 (2019-04-12)
#
CODE="
#include <linux/pci.h>
#include <linux/mdev.h>
void conftest_mdev_set_iommu_device() {
mdev_set_iommu_device();
}"
compile_check_conftest "$CODE" "NV_MDEV_SET_IOMMU_DEVICE_PRESENT" "" "functions"
;;
mdev_parent_ops_has_open_device)
# Determine if 'mdev_parent_ops' structure has a 'open_device'
# field.
#
# Added by commit 2fd585f4ed9d ("vfio: Provide better generic support
# for open/release vfio_device_ops") in 5.15 (2021-08-05)
#
CODE="
#include <linux/pci.h>
#include <linux/mdev.h>
int conftest_mdev_parent_ops_has_open_device(void) {
return offsetof(struct mdev_parent_ops, open_device);
}"
compile_check_conftest "$CODE" "NV_MDEV_PARENT_OPS_HAS_OPEN_DEVICE" "" "types"
;;
mdev_parent_ops_has_device_driver)
#
# Determine if 'mdev_parent_ops' structure has 'device_driver' field.
#
# Added by commit 88a21f265ce5 ("vfio/mdev: Allow the mdev_parent_ops
# to specify the device driver to bind) in v5.14 (2021-06-17)
#
CODE="
#include <linux/pci.h>
#include <linux/mdev.h>
int conftest_mdev_parent_ops_has_device_driver(void) {
return offsetof(struct mdev_parent_ops, device_driver);
}"
compile_check_conftest "$CODE" "NV_MDEV_PARENT_OPS_HAS_DEVICE_DRIVER" "" "types"
;;
mdev_driver_has_supported_type_groups)
#
# Determine if 'mdev_driver' structure has 'supported_type_groups' field.
#
# Added by commit 6b42f491e17c ("vfio/mdev: Remove mdev_parent_ops)
# in v5.19 (2022-04-11)
#
CODE="
#include <linux/pci.h>
#include <linux/mdev.h>
int conftest_mdev_driver_has_supported_type_groups(void) {
return offsetof(struct mdev_driver, supported_type_groups);
}"
compile_check_conftest "$CODE" "NV_MDEV_DRIVER_HAS_SUPPORTED_TYPE_GROUPS" "" "types"
;;
vfio_device_ops_has_dma_unmap)
#
# Determine if 'vfio_device_ops' struct has 'dma_unmap' field.
#
# Added by commit ce4b4657ff18 ("vfio: Replace the DMA unmapping
# notifier with a callback") in v6.0
#
CODE="
#include <linux/pci.h>
#include <linux/vfio.h>
int conftest_vfio_device_ops_has_dma_unmap(void) {
return offsetof(struct vfio_device_ops, dma_unmap);
}"
compile_check_conftest "$CODE" "NV_VFIO_DEVICE_OPS_HAS_DMA_UNMAP" "" "types"
;;
vfio_device_ops_has_bind_iommufd)
#
# Determine if 'vfio_device_ops' struct has 'bind_iommufd' field.
#
# Added by commit a4d1f91db5021 ("vfio-iommufd: Support iommufd
# for physical VFIO devices") in v6.2
#
CODE="
#include <linux/pci.h>
#include <linux/vfio.h>
int conftest_vfio_device_ops_has_bind_iommufd(void) {
return offsetof(struct vfio_device_ops, bind_iommufd);
}"
compile_check_conftest "$CODE" "NV_VFIO_DEVICE_OPS_HAS_BIND_IOMMUFD" "" "types"
;;
vfio_device_ops_has_detach_ioas)
#
# Determine if 'vfio_device_ops' struct has 'detach_ioas' field.
#
# Added by commit 9048c7341c4df9cae04c154a8b0f556dbe913358 ("vfio-iommufd: Add detach_ioas
# support for physical VFIO devices
#
CODE="
#include <linux/pci.h>
#include <linux/vfio.h>
int conftest_vfio_device_ops_has_detach_ioas(void) {
return offsetof(struct vfio_device_ops, detach_ioas);
}"
compile_check_conftest "$CODE" "NV_VFIO_DEVICE_OPS_HAS_DETACH_IOAS" "" "types"
;;
pfn_address_space)
#
# Determine if 'struct pfn_address_space' structure is present or not.
#
CODE="
#include <linux/memory-failure.h>
void conftest_pfn_address_space() {
struct pfn_address_space pfn_address_space;
}"
compile_check_conftest "$CODE" "NV_PFN_ADDRESS_SPACE_STRUCT_PRESENT" "" "types"
;;
pci_irq_vector_helpers)
#
# Determine if pci_alloc_irq_vectors(), pci_free_irq_vectors()
# functions are present or not.
#
# Added by commit aff171641d181ea573 (PCI: Provide sensible IRQ
# vector alloc/free routines) (2016-07-12)
#
CODE="
#include <linux/pci.h>
#include <linux/msi.h>
void conftest_pci_irq_vector_helpers() {
pci_alloc_irq_vectors();
pci_free_irq_vectors ();
}"
compile_check_conftest "$CODE" "NV_PCI_IRQ_VECTOR_HELPERS_PRESENT" "" "functions"
;;
vfio_device_gfx_plane_info)
#
# determine if the 'struct vfio_device_gfx_plane_info' type is present.
#
# Added by commit e20eaa2382e7 ("vfio: ABI for mdev display
# dma-buf operation") in v4.16 (2017-11-23)
#
CODE="
#include <linux/vfio.h>
struct vfio_device_gfx_plane_info info;"
compile_check_conftest "$CODE" "NV_VFIO_DEVICE_GFX_PLANE_INFO_PRESENT" "" "types"
;;
vfio_uninit_group_dev)
#
# Determine if vfio_uninit_group_dev() function is present or not.
#
# Added by commit ae03c3771b8c (vfio: Introduce a vfio_uninit_group_dev()
# API call) in v5.15
#
CODE="
#include <linux/vfio.h>
void conftest_vfio_uninit_group_dev() {
vfio_uninit_group_dev();
}"
compile_check_conftest "$CODE" "NV_VFIO_UNINIT_GROUP_DEV_PRESENT" "" "functions"
;;
vfio_pci_core_available)
# Determine if VFIO_PCI_CORE is available
#
# Added by commit 7fa005caa35e ("vfio/pci: Introduce
# vfio_pci_core.ko") in v5.16 (2021-08-26)
#
CODE="
#if defined(NV_LINUX_VFIO_PCI_CORE_H_PRESENT)
#include <linux/vfio_pci_core.h>
#endif
#if !defined(CONFIG_VFIO_PCI_CORE) && !defined(CONFIG_VFIO_PCI_CORE_MODULE)
#error VFIO_PCI_CORE not enabled
#endif
void conftest_vfio_pci_core_available(void) {
struct vfio_pci_core_device dev;
}"
compile_check_conftest "$CODE" "NV_VFIO_PCI_CORE_PRESENT" "" "generic"
;;
mdev_available)
# Determine if MDEV is available
#
# Added by commit 7b96953bc640 ("vfio: Mediated device Core driver")
# in v4.10
#
CODE="
#if defined(NV_LINUX_MDEV_H_PRESENT)
#include <linux/pci.h>
#include <linux/mdev.h>
#endif
#if !defined(CONFIG_VFIO_MDEV) && !defined(CONFIG_VFIO_MDEV_MODULE)
#error MDEV not enabled
#endif
void conftest_mdev_available(void) {
struct mdev_device *mdev;
}"
compile_check_conftest "$CODE" "NV_MDEV_PRESENT" "" "generic"
;;
vfio_alloc_device)
#
# Determine if vfio_alloc_device() function is present or not.
#
# Added by commit cb9ff3f3b84c (vfio: Add helpers for unifying vfio_device
# life cycle) in v6.1
#
CODE="
#include <linux/vfio.h>
void conftest_vfio_alloc_device() {
vfio_alloc_device();
}"
compile_check_conftest "$CODE" "NV_VFIO_ALLOC_DEVICE_PRESENT" "" "functions"
;;
vfio_register_emulated_iommu_dev)
#
# Determine if vfio_register_emulated_iommu_dev() function is present or not.
#
# Added by commit c68ea0d00ad8 (vfio: simplify iommu group allocation
# for mediated devices) in v5.16
#
CODE="
#include <linux/vfio.h>
void conftest_vfio_register_emulated_iommu_dev() {
vfio_register_emulated_iommu_dev();
}"
compile_check_conftest "$CODE" "NV_VFIO_REGISTER_EMULATED_IOMMU_DEV_PRESENT" "" "functions"
;;
bus_type_has_iommu_ops)
#
# Determine if 'bus_type' structure has a 'iommu_ops' field.
#
# This field was removed by commit 17de3f5fdd35 (iommu: Retire bus ops)
# in v6.8
#
CODE="
#include <linux/device.h>
int conftest_bus_type_has_iommu_ops(void) {
return offsetof(struct bus_type, iommu_ops);
}"
compile_check_conftest "$CODE" "NV_BUS_TYPE_HAS_IOMMU_OPS" "" "types"
;;
eventfd_signal_has_counter_arg)
#
# Determine if eventfd_signal() function has an additional 'counter' argument.
#
# This argument was removed by commit 3652117f8548 (eventfd: simplify
# eventfd_signal()) in v6.8
#
CODE="
#include <linux/eventfd.h>
void conftest_eventfd_signal_has_counter_arg(void) {
struct eventfd_ctx *ctx;
eventfd_signal(ctx, 1);
}"
compile_check_conftest "$CODE" "NV_EVENTFD_SIGNAL_HAS_COUNTER_ARG" "" "types"
;;
drm_available)
# Determine if the DRM subsystem is usable
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_DRV_H_PRESENT)
#include <drm/drm_drv.h>
#endif
#if !defined(CONFIG_DRM) && !defined(CONFIG_DRM_MODULE) && !defined(__FreeBSD__)
#error DRM not enabled
#endif
void conftest_drm_available(void) {
struct drm_driver drv;
/* 2013-10-02 1bb72532ac260a2d3982b40bdd4c936d779d0d16 */
(void)drm_dev_alloc;
/* 2013-10-02 c22f0ace1926da399d9a16dfaf09174c1b03594c */
(void)drm_dev_register;
/* 2013-10-02 c3a49737ef7db0bdd4fcf6cf0b7140a883e32b2a */
(void)drm_dev_unregister;
}"
compile_check_conftest "$CODE" "NV_DRM_AVAILABLE" "" "generic"
;;
drm_dev_unref)
#
# Determine if drm_dev_unref() is present.
# If it isn't, we use drm_dev_free() instead.
#
# drm_dev_free was added by commit 0dc8fe5985e0 ("drm: introduce
# drm_dev_free() to fix error paths") in v3.13 (2013-10-02)
#
# Renamed to drm_dev_unref by commit 099d1c290e2e
# ("drm: provide device-refcount") in v3.15 (2014-01-29)
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
void conftest_drm_dev_unref(void) {
drm_dev_unref();
}"
compile_check_conftest "$CODE" "NV_DRM_DEV_UNREF_PRESENT" "" "functions"
;;
pde_data)
#
# Determine if the pde_data() function is present.
#
# PDE_DATA() was replaced with pde_data() by commit 359745d78351
# ("proc: remove PDE_DATA() completely") in v5.17.
#
CODE="
#include <linux/proc_fs.h>
void conftest_pde_data(void) {
pde_data();
}"
compile_check_conftest "$CODE" "NV_PDE_DATA_LOWER_CASE_PRESENT" "" "functions"
;;
get_num_physpages)
#
# Determine if the get_num_physpages() function is
# present.
#
# Added by commit 7ee3d4e8cd56 ("mm: introduce helper function
# mem_init_print_info() to simplify mem_init()") in v3.11
#
CODE="
#include <linux/mm.h>
void conftest_get_num_physpages(void) {
get_num_physpages(NULL);
}"
compile_check_conftest "$CODE" "NV_GET_NUM_PHYSPAGES_PRESENT" "" "functions"
;;
backing_dev_info)
#
# Determine if the 'address_space' structure has
# a 'backing_dev_info' field.
#
# Removed by commit b83ae6d42143 ("fs: remove
# mapping->backing_dev_info") in v4.0
#
CODE="
#include <linux/fs.h>
int conftest_backing_dev_info(void) {
return offsetof(struct address_space, backing_dev_info);
}"
compile_check_conftest "$CODE" "NV_ADDRESS_SPACE_HAS_BACKING_DEV_INFO" "" "types"
;;
xen_ioemu_inject_msi)
# Determine if the xen_ioemu_inject_msi() function is present.
CODE="
#if defined(NV_XEN_IOEMU_H_PRESENT)
#include <linux/kernel.h>
#include <xen/interface/xen.h>
#include <xen/hvm.h>
#include <xen/ioemu.h>
#endif
void conftest_xen_ioemu_inject_msi(void) {
xen_ioemu_inject_msi();
}"
compile_check_conftest "$CODE" "NV_XEN_IOEMU_INJECT_MSI" "" "functions"
;;
phys_to_dma)
#
# Determine if the phys_to_dma function is present.
# It does not exist on all architectures.
#
CODE="
#include <linux/dma-mapping.h>
void conftest_phys_to_dma(void) {
phys_to_dma();
}"
compile_check_conftest "$CODE" "NV_PHYS_TO_DMA_PRESENT" "" "functions"
;;
dma_attr_macros)
#
# Determine if the NV_DMA_ATTR_SKIP_CPU_SYNC_PRESENT macro present.
# It does not exist on all architectures.
#
CODE="
#include <linux/dma-mapping.h>
void conftest_dma_attr_macros(void) {
int ret;
ret = DMA_ATTR_SKIP_CPU_SYNC();
}"
compile_check_conftest "$CODE" "NV_DMA_ATTR_SKIP_CPU_SYNC_PRESENT" "" "functions"
;;
dma_map_page_attrs)
#
# Determine if the dma_map_page_attrs function is present.
# It does not exist on all architectures.
#
CODE="
#include <linux/dma-mapping.h>
void conftest_dma_map_page_attrs(void) {
dma_map_page_attrs();
}"
compile_check_conftest "$CODE" "NV_DMA_MAP_PAGE_ATTRS_PRESENT" "" "functions"
;;
dma_ops)
#
# Determine if the 'dma_ops' structure is present.
# It does not exist on all architectures.
#
CODE="
#include <linux/dma-mapping.h>
void conftest_dma_ops(void) {
(void)dma_ops;
}"
compile_check_conftest "$CODE" "NV_DMA_OPS_PRESENT" "" "symbols"
;;
swiotlb_dma_ops)
#
# Determine if the 'swiotlb_dma_ops' structure is present.
# It does not exist on all architectures.
#
CODE="
#include <linux/dma-mapping.h>
void conftest_dma_ops(void) {
(void)swiotlb_dma_ops;
}"
compile_check_conftest "$CODE" "NV_SWIOTLB_DMA_OPS_PRESENT" "" "symbols"
;;
get_dma_ops)
#
# Determine if the get_dma_ops() function is present.
#
# The structure was made available to all architectures by commit
# e1c7e324539a ("dma-mapping: always provide the dma_map_ops
# based implementation") in v4.5
#
# Commit 0a0f0d8be76d ("dma-mapping: split <linux/dma-mapping.h>")
# in v5.10 moved get_dma_ops() function prototype from
# <linux/dma-mapping.h> to <linux/dma-map-ops.h>.
#
CODE="
#if defined(NV_LINUX_DMA_MAP_OPS_H_PRESENT)
#include <linux/dma-map-ops.h>
#else
#include <linux/dma-mapping.h>
#endif
void conftest_get_dma_ops(void) {
get_dma_ops();
}"
compile_check_conftest "$CODE" "NV_GET_DMA_OPS_PRESENT" "" "functions"
;;
noncoherent_swiotlb_dma_ops)
#
# Determine if the 'noncoherent_swiotlb_dma_ops' symbol is present.
# This API only exists on ARM64.
#
# Added by commit 7363590d2c46 ("arm64: Implement coherent DMA API
# based on swiotlb") in v3.15
#
# Removed by commit 9d3bfbb4df58 ("arm64: Combine coherent and
# non-coherent swiotlb dma_ops") in v4.0
#
CODE="
#include <linux/dma-mapping.h>
void conftest_noncoherent_swiotlb_dma_ops(void) {
(void)noncoherent_swiotlb_dma_ops;
}"
compile_check_conftest "$CODE" "NV_NONCOHERENT_SWIOTLB_DMA_OPS_PRESENT" "" "symbols"
;;
dma_map_resource)
#
# Determine if the dma_map_resource() function is present.
#
# Added by commit 6f3d87968f9c ("dma-mapping: add
# dma_{map,unmap}_resource") in v4.9 (2016-08-10)
#
CODE="
#include <linux/dma-mapping.h>
void conftest_dma_map_resource(void) {
dma_map_resource();
}"
compile_check_conftest "$CODE" "NV_DMA_MAP_RESOURCE_PRESENT" "" "functions"
;;
write_cr4)
#
# Determine if the write_cr4() function is present.
#
CODE="
#include <asm/processor.h>
void conftest_write_cr4(void) {
write_cr4();
}"
compile_check_conftest "$CODE" "NV_WRITE_CR4_PRESENT" "" "functions"
;;
nvhost_dma_fence_unpack)
#
# Determine if the nvhost_dma_fence_unpack function is present.
# This is only present in NVIDIA Tegra downstream kernels.
#
CODE="
#if defined(NV_LINUX_NVHOST_H_PRESENT)
#include <linux/nvhost.h>
#endif
void conftest_nvhost_dma_fence_unpack(void) {
nvhost_dma_fence_unpack();
}"
compile_check_conftest "$CODE" "NV_NVHOST_DMA_FENCE_UNPACK_PRESENT" "" "functions"
;;
of_find_node_by_phandle)
#
# Determine if the of_find_node_by_phandle function is present.
#
# Support for kernels without CONFIG_OF defined added by commit
# ce16b9d23561 ("of: define of_find_node_by_phandle for
# !CONFIG_OF") in v4.2
#
# Test if linux/of.h header file inclusion is successful or not and
# define/undefine NV_LINUX_OF_H_USABLE depending upon status of inclusion.
#
echo "$CONFTEST_PREAMBLE
#include <linux/of.h>
" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
rm -f conftest$$.o
echo "#define NV_LINUX_OF_H_USABLE" | append_conftest "generic"
CODE="
#include <linux/of.h>
void conftest_of_find_node_by_phandle() {
of_find_node_by_phandle();
}"
compile_check_conftest "$CODE" "NV_OF_FIND_NODE_BY_PHANDLE_PRESENT" "" "functions"
else
echo "#undef NV_LINUX_OF_H_USABLE" | append_conftest "generic"
echo "#undef NV_OF_FIND_NODE_BY_PHANDLE_PRESENT" | append_conftest "functions"
fi
;;
of_node_to_nid)
#
# Determine if of_node_to_nid is present
#
# Dummy implementation added by commit 559e2b7ee7a1
# ("of: Provide default of_node_to_nid() implementation.") in v2.6.36
#
# Real implementation added by commit 298535c00a2c
# ("of, numa: Add NUMA of binding implementation.") in v4.7
#
# Test if linux/of.h header file inclusion is successful or not and
# define/undefine NV_LINUX_OF_H_USABLE depending upon status of inclusion.
#
echo "$CONFTEST_PREAMBLE
#include <linux/of.h>
" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
rm -f conftest$$.o
echo "#define NV_LINUX_OF_H_USABLE" | append_conftest "generic"
CODE="
#include <linux/version.h>
#include <linux/utsname.h>
#include <linux/of.h>
void conftest_of_node_to_nid() {
of_node_to_nid();
}"
compile_check_conftest "$CODE" "NV_OF_NODE_TO_NID_PRESENT" "" "functions"
else
echo "#undef NV_LINUX_OF_H_USABLE" | append_conftest "generic"
echo "#undef NV_OF_NODE_TO_NID_PRESENT" | append_conftest "functions"
fi
;;
pnv_pci_get_npu_dev)
#
# Determine if the pnv_pci_get_npu_dev function is present.
#
# Added by commit 5d2aa710e697 ("powerpc/powernv: Add support
# for Nvlink NPUs") in v4.5
#
CODE="
#include <linux/pci.h>
void conftest_pnv_pci_get_npu_dev() {
pnv_pci_get_npu_dev();
}"
compile_check_conftest "$CODE" "NV_PNV_PCI_GET_NPU_DEV_PRESENT" "" "functions"
;;
kernel_write_has_pointer_pos_arg)
#
# Determine the pos argument type, which was changed by commit
# e13ec939e96b ("fs: fix kernel_write prototype") in v4.14.
#
echo "$CONFTEST_PREAMBLE
#include <linux/fs.h>
ssize_t kernel_write(struct file *file, const void *buf,
size_t count, loff_t *pos)
{
return 0;
}" > conftest$$.c;
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
echo "#define NV_KERNEL_WRITE_HAS_POINTER_POS_ARG" | append_conftest "function"
rm -f conftest$$.o
else
echo "#undef NV_KERNEL_WRITE_HAS_POINTER_POS_ARG" | append_conftest "function"
fi
;;
kernel_read_has_pointer_pos_arg)
#
# Determine the pos argument type, which was changed by commit
# bdd1d2d3d251 ("fs: fix kernel_read prototype") in v4.14.
#
echo "$CONFTEST_PREAMBLE
#include <linux/fs.h>
ssize_t kernel_read(struct file *file, void *buf, size_t count,
loff_t *pos)
{
return 0;
}" > conftest$$.c;
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
echo "#define NV_KERNEL_READ_HAS_POINTER_POS_ARG" | append_conftest "function"
rm -f conftest$$.o
else
echo "#undef NV_KERNEL_READ_HAS_POINTER_POS_ARG" | append_conftest "function"
fi
;;
vm_insert_pfn_prot)
#
# Determine if vm_insert_pfn_prot function is present
#
# Added by commit 1745cbc5d0de ("mm: Add vm_insert_pfn_prot()")
# in v4.6.
#
# Removed by commit f5e6d1d5f8f3 ("mm: introduce
# vmf_insert_pfn_prot()") in v4.20.
#
CODE="
#include <linux/mm.h>
void conftest_vm_insert_pfn_prot() {
vm_insert_pfn_prot();
}"
compile_check_conftest "$CODE" "NV_VM_INSERT_PFN_PROT_PRESENT" "" "functions"
;;
vmf_insert_pfn_prot)
#
# Determine if vmf_insert_pfn_prot function is present
#
# Added by commit f5e6d1d5f8f3 ("mm: introduce
# vmf_insert_pfn_prot()") in v4.20.
#
CODE="
#include <linux/mm.h>
void conftest_vmf_insert_pfn_prot() {
vmf_insert_pfn_prot();
}"
compile_check_conftest "$CODE" "NV_VMF_INSERT_PFN_PROT_PRESENT" "" "functions"
;;
drm_atomic_available)
#
# Determine if the DRM atomic modesetting subsystem is usable
#
# Added by commit 036ef5733ba4
# ("drm/atomic: Allow drivers to subclass drm_atomic_state, v3") in
# v4.2 (2018-05-18).
#
# Make conftest more robust by adding test for
# drm_atomic_set_mode_prop_for_crtc(), this function added by
# commit 955f3c334f0f ("drm/atomic: Add MODE_ID property") in v4.2
# (2015-05-25). If the DRM atomic modesetting subsystem is
# back ported to Linux kernel older than v4.2, then commit
# 955f3c334f0f must be back ported in order to get NVIDIA-DRM KMS
# support.
# Commit 72fdb40c1a4b ("drm: extract drm_atomic_uapi.c") in v4.20
# (2018-09-05), moved drm_atomic_set_mode_prop_for_crtc() function
# prototype from drm/drm_atomic.h to drm/drm_atomic_uapi.h.
#
echo "$CONFTEST_PREAMBLE
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#include <drm/drm_atomic.h>
#if !defined(CONFIG_DRM) && !defined(CONFIG_DRM_MODULE) && !defined(__FreeBSD__)
#error DRM not enabled
#endif
void conftest_drm_atomic_modeset_available(void) {
size_t a;
a = offsetof(struct drm_mode_config_funcs, atomic_state_alloc);
}" > conftest$$.c;
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
rm -f conftest$$.o
echo "$CONFTEST_PREAMBLE
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#include <drm/drm_atomic.h>
#if defined(NV_DRM_DRM_ATOMIC_UAPI_H_PRESENT)
#include <drm/drm_atomic_uapi.h>
#endif
void conftest_drm_atomic_set_mode_prop_for_crtc(void) {
drm_atomic_set_mode_prop_for_crtc();
}" > conftest$$.c;
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
rm -f conftest$$.o
echo "#undef NV_DRM_ATOMIC_MODESET_AVAILABLE" | append_conftest "generic"
else
echo "#define NV_DRM_ATOMIC_MODESET_AVAILABLE" | append_conftest "generic"
fi
else
echo "#undef NV_DRM_ATOMIC_MODESET_AVAILABLE" | append_conftest "generic"
fi
;;
drm_bus_present)
#
# Determine if the 'struct drm_bus' type is present.
#
# Added by commit 8410ea3b95d1 ("drm: rework PCI/platform driver
# interface.") in v2.6.39 (2010-12-15)
#
# Removed by commit c5786fe5f1c5 ("drm: Goody bye, drm_bus!")
# in v3.18 (2014-08-29)
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
void conftest_drm_bus_present(void) {
struct drm_bus bus;
}"
compile_check_conftest "$CODE" "NV_DRM_BUS_PRESENT" "" "types"
;;
drm_bus_has_bus_type)
#
# Determine if the 'drm_bus' structure has a 'bus_type' field.
#
# Added by commit 8410ea3b95d1 ("drm: rework PCI/platform driver
# interface.") in v2.6.39 (2010-12-15)
#
# Removed by commit 42b21049fc26 ("drm: kill drm_bus->bus_type")
# in v3.16 (2013-11-03)
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
int conftest_drm_bus_has_bus_type(void) {
return offsetof(struct drm_bus, bus_type);
}"
compile_check_conftest "$CODE" "NV_DRM_BUS_HAS_BUS_TYPE" "" "types"
;;
drm_bus_has_get_irq)
#
# Determine if the 'drm_bus' structure has a 'get_irq' field.
#
# Added by commit 8410ea3b95d1 ("drm: rework PCI/platform
# driver interface.") in v2.6.39 (2010-12-15)
#
# Removed by commit b2a21aa25a39 ("drm: remove bus->get_irq
# implementations") in v3.16 (2013-11-03)
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
int conftest_drm_bus_has_get_irq(void) {
return offsetof(struct drm_bus, get_irq);
}"
compile_check_conftest "$CODE" "NV_DRM_BUS_HAS_GET_IRQ" "" "types"
;;
drm_bus_has_get_name)
#
# Determine if the 'drm_bus' structure has a 'get_name' field.
#
# Added by commit 8410ea3b95d1 ("drm: rework PCI/platform driver
# interface.") in v2.6.39 (2010-12-15)
#
# removed by commit 9de1b51f1fae ("drm: remove drm_bus->get_name")
# in v3.16 (2013-11-03)
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
int conftest_drm_bus_has_get_name(void) {
return offsetof(struct drm_bus, get_name);
}"
compile_check_conftest "$CODE" "NV_DRM_BUS_HAS_GET_NAME" "" "types"
;;
drm_driver_has_device_list)
#
# Determine if the 'drm_driver' structure has a 'device_list' field.
#
# Renamed from device_list to legacy_device_list by commit
# b3f2333de8e8 ("drm: restrict the device list for shadow
# attached drivers") in v3.14 (2013-12-11)
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_DRV_H_PRESENT)
#include <drm/drm_drv.h>
#endif
int conftest_drm_driver_has_device_list(void) {
return offsetof(struct drm_driver, device_list);
}"
compile_check_conftest "$CODE" "NV_DRM_DRIVER_HAS_DEVICE_LIST" "" "types"
;;
drm_driver_has_legacy_dev_list)
#
# Determine if the 'drm_driver' structure has a 'legacy_dev_list' field.
#
# Renamed from device_list to legacy_device_list by commit
# b3f2333de8e8 ("drm: restrict the device list for shadow
# attached drivers") in v3.14 (2013-12-11)
#
# The commit 57bb1ee60340 ("drm: Compile out legacy chunks from
# struct drm_device") in v5.11 compiles out the legacy chunks like
# drm_driver::legacy_dev_list.
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_DRV_H_PRESENT)
#include <drm/drm_drv.h>
#endif
int conftest_drm_driver_has_legacy_dev_list(void) {
return offsetof(struct drm_driver, legacy_dev_list);
}"
compile_check_conftest "$CODE" "NV_DRM_DRIVER_HAS_LEGACY_DEV_LIST" "" "types"
;;
jiffies_to_timespec)
#
# Determine if jiffies_to_timespec() is present
#
# Removed by commit 751addac78b6 ("y2038: remove obsolete jiffies
# conversion functions") in v5.6.
#
CODE="
#include <linux/jiffies.h>
void conftest_jiffies_to_timespec(void){
jiffies_to_timespec();
}"
compile_check_conftest "$CODE" "NV_JIFFIES_TO_TIMESPEC_PRESENT" "" "functions"
;;
drm_init_function_args)
#
# Determine if these functions:
# drm_universal_plane_init()
# drm_crtc_init_with_planes()
# drm_encoder_init()
# have a 'name' argument.
#
# drm_universal_plane_init was updated by commit b0b3b7951114
# ("drm: Pass 'name' to drm_universal_plane_init()") in v4.5.
#
# drm_crtc_init_with_planes was updated by commit f98828769c88
# ("drm: Pass 'name' to drm_crtc_init_with_planes()") in v4.5.
#
# drm_encoder_init was updated by commit 13a3d91f17a5 ("drm: Pass
# 'name' to drm_encoder_init()") in v4.5.
#
# Additionally, determine whether drm_universal_plane_init() has
# a 'format_modifiers' argument, which was added by commit
# e6fc3b68558e ("drm: Plumb modifiers through plane init") in
# v4.14.
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_CRTC_H_PRESENT)
#include <drm/drm_crtc.h>
#endif
int conftest_drm_crtc_init_with_planes_has_name_arg(void) {
return
drm_crtc_init_with_planes(
NULL, /* struct drm_device *dev */
NULL, /* struct drm_crtc *crtc */
NULL, /* struct drm_plane *primary */
NULL, /* struct drm_plane *cursor */
NULL, /* const struct drm_crtc_funcs *funcs */
NULL); /* const char *name */
}"
compile_check_conftest "$CODE" "NV_DRM_CRTC_INIT_WITH_PLANES_HAS_NAME_ARG" "" "types"
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_ENCODER_H_PRESENT)
#include <drm/drm_encoder.h>
#endif
int conftest_drm_encoder_init_has_name_arg(void) {
return
drm_encoder_init(
NULL, /* struct drm_device *dev */
NULL, /* struct drm_encoder *encoder */
NULL, /* const struct drm_encoder_funcs *funcs */
DRM_MODE_ENCODER_NONE, /* int encoder_type */
NULL); /* const char *name */
}"
compile_check_conftest "$CODE" "NV_DRM_ENCODER_INIT_HAS_NAME_ARG" "" "types"
echo "$CONFTEST_PREAMBLE
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_PLANE_H_PRESENT)
#include <drm/drm_plane.h>
#endif
int conftest_drm_universal_plane_init_has_format_modifiers_arg(void) {
return
drm_universal_plane_init(
NULL, /* struct drm_device *dev */
NULL, /* struct drm_plane *plane */
0, /* unsigned long possible_crtcs */
NULL, /* const struct drm_plane_funcs *funcs */
NULL, /* const uint32_t *formats */
0, /* unsigned int format_count */
NULL, /* const uint64_t *format_modifiers */
DRM_PLANE_TYPE_PRIMARY,
NULL); /* const char *name */
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
rm -f conftest$$.o
echo "#define NV_DRM_UNIVERSAL_PLANE_INIT_HAS_FORMAT_MODIFIERS_ARG" | append_conftest "types"
echo "#define NV_DRM_UNIVERSAL_PLANE_INIT_HAS_NAME_ARG" | append_conftest "types"
else
echo "#undef NV_DRM_UNIVERSAL_PLANE_INIT_HAS_FORMAT_MODIFIERS_ARG" | append_conftest "types"
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_PLANE_H_PRESENT)
#include <drm/drm_plane.h>
#endif
int conftest_drm_universal_plane_init_has_name_arg(void) {
return
drm_universal_plane_init(
NULL, /* struct drm_device *dev */
NULL, /* struct drm_plane *plane */
0, /* unsigned long possible_crtcs */
NULL, /* const struct drm_plane_funcs *funcs */
NULL, /* const uint32_t *formats */
0, /* unsigned int format_count */
DRM_PLANE_TYPE_PRIMARY,
NULL); /* const char *name */
}"
compile_check_conftest "$CODE" "NV_DRM_UNIVERSAL_PLANE_INIT_HAS_NAME_ARG" "" "types"
fi
;;
drm_driver_has_set_busid)
#
# Determine if the drm_driver structure has a 'set_busid' callback
# field.
#
# Added by commit 915b4d11b8b9 ("drm: add driver->set_busid()
# callback") in v3.18 (2014-08-29)
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
int conftest_drm_driver_has_set_busid(void) {
return offsetof(struct drm_driver, set_busid);
}"
compile_check_conftest "$CODE" "NV_DRM_DRIVER_HAS_SET_BUSID" "" "types"
;;
drm_driver_has_gem_prime_res_obj)
#
# Determine if the drm_driver structure has a 'gem_prime_res_obj'
# callback field.
#
# Added by commit 3aac4502fd3f ("dma-buf: use reservation
# objects") in v3.17 (2014-07-01).
#
# Removed by commit 51c98747113e (drm/prime: Ditch
# gem_prime_res_obj hook) in v5.4.
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
int conftest_drm_driver_has_gem_prime_res_obj(void) {
return offsetof(struct drm_driver, gem_prime_res_obj);
}"
compile_check_conftest "$CODE" "NV_DRM_DRIVER_HAS_GEM_PRIME_RES_OBJ" "" "types"
;;
drm_crtc_state_has_connectors_changed)
#
# Determine if the crtc_state has a 'connectors_changed' field.
#
# Added by commit fc596660dd4e ("drm/atomic: add
# connectors_changed to separate it from mode_changed, v2")
# in v4.3 (2015-07-21)
#
CODE="
#include <drm/drm_crtc.h>
void conftest_drm_crtc_state_has_connectors_changed(void) {
struct drm_crtc_state foo;
(void)foo.connectors_changed;
}"
compile_check_conftest "$CODE" "NV_DRM_CRTC_STATE_HAS_CONNECTORS_CHANGED" "" "types"
;;
drm_reinit_primary_mode_group)
#
# Determine if the function drm_reinit_primary_mode_group() is
# present.
#
# Added by commit 2390cd11bfbe ("drm/crtc: add interface to
# reinitialise the legacy mode group") in v3.17 (2014-06-05)
#
# Removed by commit 3fdefa399e46 ("drm: gc now dead
# mode_group code") in v4.3 (2015-07-09)
#
CODE="
#if defined(NV_DRM_DRM_CRTC_H_PRESENT)
#include <drm/drm_crtc.h>
#endif
void conftest_drm_reinit_primary_mode_group(void) {
drm_reinit_primary_mode_group();
}"
compile_check_conftest "$CODE" "NV_DRM_REINIT_PRIMARY_MODE_GROUP_PRESENT" "" "functions"
;;
drm_helper_crtc_enable_color_mgmt)
#
# Determine if the function drm_helper_crtc_enable_color_mgmt() is
# present.
#
# Added by commit 5488dc16fde7 ("drm: introduce pipe color
# correction properties") in v4.6 (2016-03-08).
#
# Removed by commit f8ed34ac7b45 ("drm: drm_helper_crtc_enable_color_mgmt()
# => drm_crtc_enable_color_mgmt()") in v4.8.
#
CODE="
#include <drm/drm_crtc_helper.h>
void conftest_drm_helper_crtc_enable_color_mgmt(void) {
drm_helper_crtc_enable_color_mgmt();
}"
compile_check_conftest "$CODE" "NV_DRM_HELPER_CRTC_ENABLE_COLOR_MGMT_PRESENT" "" "functions"
;;
drm_crtc_enable_color_mgmt)
#
# Determine if the function drm_crtc_enable_color_mgmt() is
# present.
#
# Added by commit f8ed34ac7b45 ("drm: drm_helper_crtc_enable_color_mgmt()
# => drm_crtc_enable_color_mgmt()") in v4.8, replacing
# drm_helper_crtc_enable_color_mgmt().
#
# Moved to drm_color_mgmt.[ch] by commit f1e2f66ce2d9 ("drm: Extract
# drm_color_mgmt.[hc]") in v4.9.
#
CODE="
#if defined(NV_DRM_DRM_CRTC_H_PRESENT)
#include <drm/drm_crtc.h>
#endif
#if defined(NV_DRM_DRM_COLOR_MGMT_H_PRESENT)
#include <drm/drm_color_mgmt.h>
#endif
void conftest_drm_crtc_enable_color_mgmt(void) {
drm_crtc_enable_color_mgmt();
}"
compile_check_conftest "$CODE" "NV_DRM_CRTC_ENABLE_COLOR_MGMT_PRESENT" "" "functions"
;;
drm_atomic_helper_legacy_gamma_set)
#
# Determine if the function drm_atomic_helper_legacy_gamma_set() is
# present.
#
# Added by commit 5488dc16fde7 ("drm: introduce pipe color
# correction properties") in v4.6 (2016-03-08)
#
# Accidentally moved to drm_atomic_state_helper.[ch] by commit
# 9ef8a9dc4b21 ("drm: Extract drm_atomic_state_helper.[ch]")
# and moved back to drm_atomic_helper.[ch] by commit 1d8224e790c7
# ("drm: Fix up drm_atomic_state_helper.[hc] extraction") in v5.0.
#
# Removed by commit 6ca2ab8086af ("drm: automatic legacy gamma
# support") in v5.12 (2020-12-15)
#
CODE="
#if defined(NV_DRM_DRM_ATOMIC_HELPER_H_PRESENT)
#include <drm/drm_atomic_helper.h>
#endif
#if defined(NV_DRM_DRM_ATOMIC_STATE_HELPER_H_PRESENT)
#include <drm/drm_atomic_state_helper.h>
#endif
void conftest_drm_atomic_helper_legacy_gamma_set(void) {
drm_atomic_helper_legacy_gamma_set();
}"
compile_check_conftest "$CODE" "NV_DRM_ATOMIC_HELPER_LEGACY_GAMMA_SET_PRESENT" "" "functions"
;;
wait_on_bit_lock_argument_count)
#
# Determine how many arguments wait_on_bit_lock takes.
#
# Changed by commit 743162013d40 ("sched: Remove proliferation
# of wait_on_bit() action functions") in v3.17 (2014-07-07)
#
echo "$CONFTEST_PREAMBLE
#include <linux/wait.h>
void conftest_wait_on_bit_lock(void) {
wait_on_bit_lock(NULL, 0, 0);
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
rm -f conftest$$.o
echo "#define NV_WAIT_ON_BIT_LOCK_ARGUMENT_COUNT 3" | append_conftest "functions"
return
fi
echo "$CONFTEST_PREAMBLE
#include <linux/wait.h>
void conftest_wait_on_bit_lock(void) {
wait_on_bit_lock(NULL, 0, NULL, 0);
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
rm -f conftest$$.o
echo "#define NV_WAIT_ON_BIT_LOCK_ARGUMENT_COUNT 4" | append_conftest "functions"
return
fi
echo "#error wait_on_bit_lock() conftest failed!" | append_conftest "functions"
;;
pci_stop_and_remove_bus_device)
#
# Determine if the pci_stop_and_remove_bus_device() function is present.
#
# Added by commit 210647af897a ("PCI: Rename pci_remove_bus_device
# to pci_stop_and_remove_bus_device") in v3.4 (2012-02-25) but
# aarch64 support was added by commit d1e6dc91b532 ("arm64: Add
# architectural support for PCI") in v3.18.
#
CODE="
#include <linux/types.h>
#include <linux/pci.h>
void conftest_pci_stop_and_remove_bus_device() {
pci_stop_and_remove_bus_device();
}"
compile_check_conftest "$CODE" "NV_PCI_STOP_AND_REMOVE_BUS_DEVICE_PRESENT" "" "functions"
;;
drm_helper_mode_fill_fb_struct | drm_helper_mode_fill_fb_struct_has_const_mode_cmd_arg)
#
# Determine if the drm_helper_mode_fill_fb_struct function takes
# 'dev' argument.
#
# The drm_helper_mode_fill_fb_struct() has been updated to
# take 'dev' parameter by commit a3f913ca9892 ("drm: Pass 'dev'
# to drm_helper_mode_fill_fb_struct()") in v4.11 (2016-12-14)
#
echo "$CONFTEST_PREAMBLE
#include <drm/drm_crtc_helper.h>
void drm_helper_mode_fill_fb_struct(struct drm_device *dev,
struct drm_framebuffer *fb,
const struct drm_mode_fb_cmd2 *mode_cmd)
{
return;
}" > conftest$$.c;
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
echo "#define NV_DRM_HELPER_MODE_FILL_FB_STRUCT_HAS_DEV_ARG" | append_conftest "function"
echo "#define NV_DRM_HELPER_MODE_FILL_FB_STRUCT_HAS_CONST_MODE_CMD_ARG" | append_conftest "function"
rm -f conftest$$.o
else
echo "#undef NV_DRM_HELPER_MODE_FILL_FB_STRUCT_HAS_DEV_ARG" | append_conftest "function"
#
# Determine if the drm_mode_fb_cmd2 pointer argument is const in
# drm_mode_config_funcs::fb_create and drm_helper_mode_fill_fb_struct().
#
# The drm_mode_fb_cmd2 pointer through this call chain was made
# const by commit 1eb83451ba55 ("drm: Pass the user drm_mode_fb_cmd2
# as const to .fb_create()") in v4.5 (2015-11-11)
#
echo "$CONFTEST_PREAMBLE
#include <drm/drm_crtc_helper.h>
void drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb,
const struct drm_mode_fb_cmd2 *mode_cmd)
{
return;
}" > conftest$$.c;
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
echo "#define NV_DRM_HELPER_MODE_FILL_FB_STRUCT_HAS_CONST_MODE_CMD_ARG" | append_conftest "function"
rm -f conftest$$.o
else
echo "#undef NV_DRM_HELPER_MODE_FILL_FB_STRUCT_HAS_CONST_MODE_CMD_ARG" | append_conftest "function"
fi
fi
;;
file_operations_fop_unsigned_offset_present)
#
# Determine if the FOP_UNSIGNED_OFFSET define is present.
#
# Added by commit 641bb4394f40 ("fs: move FMODE_UNSIGNED_OFFSET to
# fop_flags") in v6.12.
#
CODE="
#include <linux/fs.h>
int conftest_file_operations_fop_unsigned_offset_present(void) {
return FOP_UNSIGNED_OFFSET;
}"
compile_check_conftest "$CODE" "NV_FILE_OPERATIONS_FOP_UNSIGNED_OFFSET_PRESENT" "" "types"
;;
mm_context_t)
#
# Determine if the 'mm_context_t' data type is present
# and if it has an 'id' member.
# It does not exist on all architectures.
#
echo "$CONFTEST_PREAMBLE
#include <linux/mm.h>
int conftest_mm_context_t(void) {
return offsetof(mm_context_t, id);
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
echo "#define NV_MM_CONTEXT_T_HAS_ID" | append_conftest "types"
rm -f conftest$$.o
return
else
echo "#undef NV_MM_CONTEXT_T_HAS_ID" | append_conftest "types"
return
fi
;;
pci_dev_has_ats_enabled)
#
# Determine if the 'pci_dev' data type has a 'ats_enabled' member.
#
# Added by commit d544d75ac96a ("PCI: Embed ATS info directly
# into struct pci_dev") in v4.3.
#
CODE="
#include <linux/pci.h>
int conftest_pci_dev_ats_enabled_t(void) {
return ((struct pci_dev *)0)->ats_enabled;
}"
compile_check_conftest "$CODE" "NV_PCI_DEV_HAS_ATS_ENABLED" "" "types"
;;
get_user_pages)
#
# Conftest for get_user_pages()
#
# Use long type for get_user_pages and unsigned long for nr_pages
# by commit 28a35716d317 ("mm: use long type for page counts
# in mm_populate() and get_user_pages()") in v3.9 (2013-02-22)
#
# Removed struct task_struct *tsk & struct mm_struct *mm from
# get_user_pages by commit cde70140fed8 ("mm/gup: Overload
# get_user_pages() functions") in v4.6 (2016-02-12)
#
# Replaced get_user_pages6 with get_user_pages by commit
# c12d2da56d0e ("mm/gup: Remove the macro overload API migration
# helpers from the get_user*() APIs") in v4.6 (2016-04-04)
#
# Replaced write and force parameters with gup_flags by
# commit 768ae309a961 ("mm: replace get_user_pages() write/force
# parameters with gup_flags") in v4.9 (2016-10-13)
#
# Removed vmas parameter from get_user_pages() by commit 54d020692b34
# ("mm/gup: remove unused vmas parameter from get_user_pages()")
# in v6.5.
#
# linux-4.4.168 cherry-picked commit 768ae309a961 without
# c12d2da56d0e which is covered in Conftest #3.
#
#
# This function sets the NV_GET_USER_PAGES_* macros as per the below
# passing conftest's
#
set_get_user_pages_defines () {
if [ "$1" = "NV_GET_USER_PAGES_HAS_ARGS_WRITE_FORCE_VMAS" ]; then
echo "#define NV_GET_USER_PAGES_HAS_ARGS_WRITE_FORCE_VMAS" | append_conftest "functions"
else
echo "#undef NV_GET_USER_PAGES_HAS_ARGS_WRITE_FORCE_VMAS" | append_conftest "functions"
fi
if [ "$1" = "NV_GET_USER_PAGES_HAS_ARGS_TSK_WRITE_FORCE_VMAS" ]; then
echo "#define NV_GET_USER_PAGES_HAS_ARGS_TSK_WRITE_FORCE_VMAS" | append_conftest "functions"
else
echo "#undef NV_GET_USER_PAGES_HAS_ARGS_TSK_WRITE_FORCE_VMAS" | append_conftest "functions"
fi
if [ "$1" = "NV_GET_USER_PAGES_HAS_ARGS_TSK_FLAGS_VMAS" ]; then
echo "#define NV_GET_USER_PAGES_HAS_ARGS_TSK_FLAGS_VMAS" | append_conftest "functions"
else
echo "#undef NV_GET_USER_PAGES_HAS_ARGS_TSK_FLAGS_VMAS" | append_conftest "functions"
fi
if [ "$1" = "NV_GET_USER_PAGES_HAS_ARGS_FLAGS_VMAS" ]; then
echo "#define NV_GET_USER_PAGES_HAS_ARGS_FLAGS_VMAS" | append_conftest "functions"
else
echo "#undef NV_GET_USER_PAGES_HAS_ARGS_FLAGS_VMAS" | append_conftest "functions"
fi
if [ "$1" = "NV_GET_USER_PAGES_HAS_ARGS_FLAGS" ]; then
echo "#define NV_GET_USER_PAGES_HAS_ARGS_FLAGS" | append_conftest "functions"
else
echo "#undef NV_GET_USER_PAGES_HAS_ARGS_FLAGS" | append_conftest "functions"
fi
}
# Conftest #1: Check if get_user_pages accepts 6 arguments.
# Return if true.
# Fall through to conftest #2 on failure.
echo "$CONFTEST_PREAMBLE
#include <linux/mm.h>
long get_user_pages(unsigned long start,
unsigned long nr_pages,
int write,
int force,
struct page **pages,
struct vm_area_struct **vmas) {
return 0;
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
set_get_user_pages_defines "NV_GET_USER_PAGES_HAS_ARGS_WRITE_FORCE_VMAS"
rm -f conftest$$.o
return
fi
# Conftest #2: Check if get_user_pages has gup_flags instead of
# write and force parameters. And that gup doesn't accept a
# task_struct and mm_struct as its first arguments. get_user_pages
# has vm_area_struct as its last argument.
# Return if available.
# Fall through to conftest #3 on failure.
echo "$CONFTEST_PREAMBLE
#include <linux/mm.h>
long get_user_pages(unsigned long start,
unsigned long nr_pages,
unsigned int gup_flags,
struct page **pages,
struct vm_area_struct **vmas) {
return 0;
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
set_get_user_pages_defines "NV_GET_USER_PAGES_HAS_ARGS_FLAGS_VMAS"
rm -f conftest$$.o
return
fi
# Conftest #3: Check if get_user_pages has gup_flags instead of
# write and force parameters. The gup has task_struct and
# mm_struct as its first arguments. get_user_pages
# has vm_area_struct as its last argument.
# Return if available.
# Fall through to conftest #4 on failure.
echo "$CONFTEST_PREAMBLE
#include <linux/mm.h>
long get_user_pages(struct task_struct *tsk,
struct mm_struct *mm,
unsigned long start,
unsigned long nr_pages,
unsigned int gup_flags,
struct page **pages,
struct vm_area_struct **vmas) {
return 0;
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
set_get_user_pages_defines "NV_GET_USER_PAGES_HAS_ARGS_TSK_FLAGS_VMAS"
rm -f conftest$$.o
return
fi
# Conftest #4: gup doesn't accept a task_struct and mm_struct as
# its first arguments. check if get_user_pages() does not take
# vmas argument.
# Fall through to default case otherwise.
echo "$CONFTEST_PREAMBLE
#include <linux/mm.h>
long get_user_pages(unsigned long start,
unsigned long nr_pages,
unsigned int gup_flags,
struct page **pages) {
return 0;
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
set_get_user_pages_defines "NV_GET_USER_PAGES_HAS_ARGS_FLAGS"
rm -f conftest$$.o
return
fi
set_get_user_pages_defines "NV_GET_USER_PAGES_HAS_ARGS_TSK_WRITE_FORCE_VMAS"
return
;;
get_user_pages_remote)
#
# Determine if the function get_user_pages_remote() is
# present and has write/force/locked/tsk parameters.
#
# get_user_pages_remote() was added by commit 1e9877902dc7
# ("mm/gup: Introduce get_user_pages_remote()") in v4.6 (2016-02-12)
#
# get_user_pages[_remote]() write/force parameters
# replaced with gup_flags by commits 768ae309a961 ("mm: replace
# get_user_pages() write/force parameters with gup_flags") and
# commit 9beae1ea8930 ("mm: replace get_user_pages_remote()
# write/force parameters with gup_flags") in v4.9 (2016-10-13)
#
# get_user_pages_remote() added 'locked' parameter by
# commit 5b56d49fc31d ("mm: add locked parameter to
# get_user_pages_remote()") in v4.10 (2016-12-14)
#
# get_user_pages_remote() removed 'tsk' parameter by
# commit 64019a2e467a ("mm/gup: remove task_struct pointer for
# all gup code") in v5.9.
#
# Removed vmas parameter from get_user_pages_remote() by commit
# ca5e863233e8 ("mm/gup: remove vmas parameter from
# get_user_pages_remote()") in v6.5.
#
#
# This function sets the NV_GET_USER_PAGES_REMOTE_* macros as per
# the below passing conftest's
#
set_get_user_pages_remote_defines () {
if [ "$1" = "" ]; then
echo "#undef NV_GET_USER_PAGES_REMOTE_PRESENT" | append_conftest "functions"
else
echo "#define NV_GET_USER_PAGES_REMOTE_PRESENT" | append_conftest "functions"
fi
if [ "$1" = "NV_GET_USER_PAGES_REMOTE_HAS_ARGS_TSK_WRITE_FORCE_VMAS" ]; then
echo "#define NV_GET_USER_PAGES_REMOTE_HAS_ARGS_TSK_WRITE_FORCE_VMAS" | append_conftest "functions"
else
echo "#undef NV_GET_USER_PAGES_REMOTE_HAS_ARGS_TSK_WRITE_FORCE_VMAS" | append_conftest "functions"
fi
if [ "$1" = "NV_GET_USER_PAGES_REMOTE_HAS_ARGS_TSK_FLAGS_VMAS" ]; then
echo "#define NV_GET_USER_PAGES_REMOTE_HAS_ARGS_TSK_FLAGS_VMAS" | append_conftest "functions"
else
echo "#undef NV_GET_USER_PAGES_REMOTE_HAS_ARGS_TSK_FLAGS_VMAS" | append_conftest "functions"
fi
if [ "$1" = "NV_GET_USER_PAGES_REMOTE_HAS_ARGS_TSK_FLAGS_LOCKED_VMAS" ]; then
echo "#define NV_GET_USER_PAGES_REMOTE_HAS_ARGS_TSK_FLAGS_LOCKED_VMAS" | append_conftest "functions"
else
echo "#undef NV_GET_USER_PAGES_REMOTE_HAS_ARGS_TSK_FLAGS_LOCKED_VMAS" | append_conftest "functions"
fi
if [ "$1" = "NV_GET_USER_PAGES_REMOTE_HAS_ARGS_FLAGS_LOCKED_VMAS" ]; then
echo "#define NV_GET_USER_PAGES_REMOTE_HAS_ARGS_FLAGS_LOCKED_VMAS" | append_conftest "functions"
else
echo "#undef NV_GET_USER_PAGES_REMOTE_HAS_ARGS_FLAGS_LOCKED_VMAS" | append_conftest "functions"
fi
if [ "$1" = "NV_GET_USER_PAGES_REMOTE_HAS_ARGS_FLAGS_LOCKED" ]; then
echo "#define NV_GET_USER_PAGES_REMOTE_HAS_ARGS_FLAGS_LOCKED" | append_conftest "functions"
else
echo "#undef NV_GET_USER_PAGES_REMOTE_HAS_ARGS_FLAGS_LOCKED" | append_conftest "functions"
fi
}
# conftest #1: check if get_user_pages_remote() is available
# return if not available.
# Fall through to conftest #2 if it is present
echo "$CONFTEST_PREAMBLE
#include <linux/mm.h>
void conftest_get_user_pages_remote(void) {
get_user_pages_remote();
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
set_get_user_pages_remote_defines ""
rm -f conftest$$.o
return
fi
#
# conftest #2: check if get_user_pages_remote() has write, force
# and vmas arguments. Return if these arguments are present
# Fall through to conftest #3 if these args are absent.
#
echo "$CONFTEST_PREAMBLE
#include <linux/mm.h>
long get_user_pages_remote(struct task_struct *tsk,
struct mm_struct *mm,
unsigned long start,
unsigned long nr_pages,
int write,
int force,
struct page **pages,
struct vm_area_struct **vmas) {
return 0;
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
set_get_user_pages_remote_defines "NV_GET_USER_PAGES_REMOTE_HAS_ARGS_TSK_WRITE_FORCE_VMAS"
rm -f conftest$$.o
return
fi
#
# conftest #3: check if get_user_pages_remote() has gpu_flags and
# vmas arguments. Return if these arguments are present
# Fall through to conftest #4 if these args are absent.
#
echo "$CONFTEST_PREAMBLE
#include <linux/mm.h>
long get_user_pages_remote(struct task_struct *tsk,
struct mm_struct *mm,
unsigned long start,
unsigned long nr_pages,
unsigned int gpu_flags,
struct page **pages,
struct vm_area_struct **vmas) {
return 0;
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
set_get_user_pages_remote_defines "NV_GET_USER_PAGES_REMOTE_HAS_ARGS_TSK_FLAGS_VMAS"
rm -f conftest$$.o
return
fi
#
# conftest #4: check if get_user_pages_remote() has locked and
# vmas argument
# Return if these arguments are present. Fall through to conftest #5
# if these args are absent.
#
echo "$CONFTEST_PREAMBLE
#include <linux/mm.h>
long get_user_pages_remote(struct task_struct *tsk,
struct mm_struct *mm,
unsigned long start,
unsigned long nr_pages,
unsigned int gup_flags,
struct page **pages,
struct vm_area_struct **vmas,
int *locked) {
return 0;
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
set_get_user_pages_remote_defines "NV_GET_USER_PAGES_REMOTE_HAS_ARGS_TSK_FLAGS_LOCKED_VMAS"
rm -f conftest$$.o
return
fi
#
# conftest #5: check if get_user_pages_remote() does not take
# tsk argument.
#
echo "$CONFTEST_PREAMBLE
#include <linux/mm.h>
long get_user_pages_remote(struct mm_struct *mm,
unsigned long start,
unsigned long nr_pages,
unsigned int gup_flags,
struct page **pages,
struct vm_area_struct **vmas,
int *locked) {
return 0;
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
set_get_user_pages_remote_defines "NV_GET_USER_PAGES_REMOTE_HAS_ARGS_FLAGS_LOCKED_VMAS"
rm -f conftest$$.o
fi
#
# conftest #6: check if get_user_pages_remote() does not take
# vmas argument.
#
echo "$CONFTEST_PREAMBLE
#include <linux/mm.h>
long get_user_pages_remote(struct mm_struct *mm,
unsigned long start,
unsigned long nr_pages,
unsigned int gup_flags,
struct page **pages,
int *locked) {
return 0;
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
set_get_user_pages_remote_defines "NV_GET_USER_PAGES_REMOTE_HAS_ARGS_FLAGS_LOCKED"
rm -f conftest$$.o
fi
;;
pin_user_pages)
#
# Determine if the function pin_user_pages() is present.
# Presence of pin_user_pages() also implies the presence of
# unpin-user_page().
#
# pin_user_pages() was added by commit eddb1c228f79 ("mm/gup:
# introduce pin_user_pages*() and FOLL_PIN") in v5.6.
#
# Removed vmas parameter from pin_user_pages() by commit
# 4c630f307455 ("mm/gup: remove vmas parameter from
# pin_user_pages()") in v6.5.
set_pin_user_pages_defines () {
if [ "$1" = "" ]; then
echo "#undef NV_PIN_USER_PAGES_PRESENT" | append_conftest "functions"
else
echo "#define NV_PIN_USER_PAGES_PRESENT" | append_conftest "functions"
fi
if [ "$1" = "NV_PIN_USER_PAGES_HAS_ARGS_VMAS" ]; then
echo "#define NV_PIN_USER_PAGES_HAS_ARGS_VMAS" | append_conftest "functions"
else
echo "#undef NV_PIN_USER_PAGES_HAS_ARGS_VMAS" | append_conftest "functions"
fi
}
# conftest #1: check if pin_user_pages() is available
# return if not available.
# Fall through to conftest #2 if it is present
#
echo "$CONFTEST_PREAMBLE
#include <linux/mm.h>
void conftest_pin_user_pages(void) {
pin_user_pages();
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
set_pin_user_pages_defines ""
rm -f conftest$$.o
return
fi
# conftest #2: Check if pin_user_pages() has vmas argument
echo "$CONFTEST_PREAMBLE
#include <linux/mm.h>
long pin_user_pages(unsigned long start,
unsigned long nr_pages,
unsigned int gup_flags,
struct page **pages,
struct vm_area_struct **vmas) {
return 0;
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
set_pin_user_pages_defines "NV_PIN_USER_PAGES_HAS_ARGS_VMAS"
rm -f conftest$$.o
else
set_pin_user_pages_defines "NV_PIN_USER_PAGES_PRESENT"
fi
;;
pin_user_pages_remote)
# Determine if the function pin_user_pages_remote() is present
#
# pin_user_pages_remote() was added by commit eddb1c228f7951d399240
# ("mm/gup: introduce pin_user_pages*() and FOLL_PIN")
# in v5.6 (2020-01-30)
# pin_user_pages_remote() removed 'tsk' parameter by commit
# 64019a2e467a ("mm/gup: remove task_struct pointer for all gup
# code") in v5.9.
#
# Removed unused vmas parameter from pin_user_pages_remote() by
# commit 0b295316b3a9 ("mm/gup: remove unused vmas parameter from
# pin_user_pages_remote()") in v6.5.
#
# This function sets the NV_PIN_USER_PAGES_REMOTE_* macros as per
# the below passing conftest's
#
set_pin_user_pages_remote_defines () {
if [ "$1" = "" ]; then
echo "#undef NV_PIN_USER_PAGES_REMOTE_PRESENT" | append_conftest "functions"
else
echo "#define NV_PIN_USER_PAGES_REMOTE_PRESENT" | append_conftest "functions"
fi
if [ "$1" = "NV_PIN_USER_PAGES_REMOTE_HAS_ARGS_TSK_VMAS" ]; then
echo "#define NV_PIN_USER_PAGES_REMOTE_HAS_ARGS_TSK_VMAS" | append_conftest "functions"
else
echo "#undef NV_PIN_USER_PAGES_REMOTE_HAS_ARGS_TSK_VMAS" | append_conftest "functions"
fi
if [ "$1" = "NV_PIN_USER_PAGES_REMOTE_HAS_ARGS_VMAS" ]; then
echo "#define NV_PIN_USER_PAGES_REMOTE_HAS_ARGS_VMAS" | append_conftest "functions"
else
echo "#undef NV_PIN_USER_PAGES_REMOTE_HAS_ARGS_VMAS" | append_conftest "functions"
fi
}
# conftest #1: check if pin_user_pages_remote() is available
# return if not available.
# Fall through to conftest #2 if it is present
#
echo "$CONFTEST_PREAMBLE
#include <linux/mm.h>
void conftest_pin_user_pages_remote(void) {
pin_user_pages_remote();
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
set_pin_user_pages_remote_defines ""
rm -f conftest$$.o
return
fi
# conftest #2: Check if pin_user_pages_remote() has tsk and
# vmas argument
# Return if these arguments are present else fall through to
# conftest #3
echo "$CONFTEST_PREAMBLE
#include <linux/mm.h>
long pin_user_pages_remote(struct task_struct *tsk,
struct mm_struct *mm,
unsigned long start,
unsigned long nr_pages,
unsigned int gup_flags,
struct page **pages,
struct vm_area_struct **vmas,
int *locked) {
return 0;
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
set_pin_user_pages_remote_defines "NV_PIN_USER_PAGES_REMOTE_HAS_ARGS_TSK_VMAS"
rm -f conftest$$.o
return
fi
# conftest #3: Check if pin_user_pages_remote() has vmas argument
echo "$CONFTEST_PREAMBLE
#include <linux/mm.h>
long pin_user_pages_remote(struct mm_struct *mm,
unsigned long start,
unsigned long nr_pages,
unsigned int gup_flags,
struct page **pages,
struct vm_area_struct **vmas,
int *locked) {
return 0;
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
set_pin_user_pages_remote_defines "NV_PIN_USER_PAGES_REMOTE_HAS_ARGS_VMAS"
rm -f conftest$$.o
else
set_pin_user_pages_remote_defines "NV_PIN_USER_PAGES_REMOTE_PRESENT"
fi
;;
foll_longterm_present)
#
# Determine if FOLL_LONGTERM enum is present or not
#
# Added by commit 932f4a630a69 ("mm/gup: replace
# get_user_pages_longterm() with FOLL_LONGTERM") in
# v5.2
#
CODE="
#include <linux/mm.h>
int foll_longterm = FOLL_LONGTERM;
"
compile_check_conftest "$CODE" "NV_FOLL_LONGTERM_PRESENT" "" "types"
;;
vfio_pin_pages_has_vfio_device_arg)
#
# Determine if vfio_pin_pages() kABI accepts "struct vfio_device *"
# argument instead of "struct device *"
#
# Replaced "struct device *" with "struct vfio_device *" by commit
# 8e432bb015b6c ("vfio/mdev: Pass in a struct vfio_device * to
# vfio_pin/unpin_pages()") in v5.19
#
echo "$CONFTEST_PREAMBLE
#include <linux/pci.h>
#include <linux/vfio.h>
int vfio_pin_pages(struct vfio_device *device,
unsigned long *user_pfn,
int npage,
int prot,
unsigned long *phys_pfn) {
return 0;
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
echo "#define NV_VFIO_PIN_PAGES_HAS_VFIO_DEVICE_ARG" | append_conftest "functions"
rm -f conftest$$.o
else
echo "#undef NV_VFIO_PIN_PAGES_HAS_VFIO_DEVICE_ARG" | append_conftest "functions"
fi
;;
vfio_pin_pages_has_pages_arg)
#
# Determine if vfio_pin_pages() kABI accepts "struct pages **:
# argument instead of "unsigned long *phys_pfn"
#
# Replaced "unsigned long *phys_pfn" with "struct pages **pages"
# in commit 34a255e676159 ("vfio: Replace phys_pfn with pages for
# vfio_pin_pages()") in v6.0.
#
echo "$CONFTEST_PREAMBLE
#include <linux/pci.h>
#include <linux/vfio.h>
int vfio_pin_pages(struct vfio_device *device,
dma_addr_t iova,
int npage,
int prot,
struct page **pages) {
return 0;
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
echo "#define NV_VFIO_PIN_PAGES_HAS_PAGES_ARG" | append_conftest "functions"
rm -f conftest$$.o
else
echo "#undef NV_VFIO_PIN_PAGES_HAS_PAGES_ARG" | append_conftest "functions"
fi
;;
enable_apicv)
#
# Determine if enable_apicv boolean is exported by kernel.
#
# Added by commit fdf513e37a3b ("KVM: x86: Use common
# 'enable_apicv' variable for both APICv and AVIC") in v5.14.
#
CODE="
$CONFTEST_PREAMBLE
#include <asm/kvm_host.h>
bool is_enable_apicv_present() {
return enable_apicv;
}"
compile_check_conftest "$CODE" "NV_ENABLE_APICV_PRESENT" "" "types"
;;
pci_driver_has_driver_managed_dma)
#
# Determine if "struct pci_driver" has .driver_managed_dma member.
#
# Added by commit 512881eacfa7 ("bus: platform,amba,fsl-mc,PCI:
# Add device DMA ownership management") in v5.19
#
CODE="
#include <linux/pci.h>
int conftest_pci_driver_has_driver_managed_dma(void) {
return offsetof(struct pci_driver, driver_managed_dma);
}"
compile_check_conftest "$CODE" "NV_PCI_DRIVER_HAS_DRIVER_MANAGED_DMA" "" "types"
;;
radix_tree_empty)
#
# Determine if the function radix_tree_empty() is present.
#
# Added by commit e9256efcc8e3 ("radix-tree: introduce
# radix_tree_empty") in v4.7 (2016-05-20)
#
CODE="
#include <linux/radix-tree.h>
int conftest_radix_tree_empty(void) {
radix_tree_empty();
}"
compile_check_conftest "$CODE" "NV_RADIX_TREE_EMPTY_PRESENT" "" "functions"
;;
drm_gem_object_lookup)
#
# Determine the number of arguments of drm_gem_object_lookup().
#
# First argument of type drm_device removed by commit
# a8ad0bd84f98 ("drm: Remove unused drm_device from
# drm_gem_object_lookup()") in v4.7 (2016-05-09)
#
echo "$CONFTEST_PREAMBLE
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_GEM_H_PRESENT)
#include <drm/drm_gem.h>
#endif
void conftest_drm_gem_object_lookup(void) {
drm_gem_object_lookup(NULL, NULL, 0);
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
echo "#define NV_DRM_GEM_OBJECT_LOOKUP_ARGUMENT_COUNT 3" | append_conftest "functions"
rm -f conftest$$.o
return
else
echo "#define NV_DRM_GEM_OBJECT_LOOKUP_ARGUMENT_COUNT 2" | append_conftest "functions"
fi
;;
drm_master_drop_has_from_release_arg)
#
# Determine if drm_driver::master_drop() has 'from_release' argument.
#
# Last argument 'bool from_release' has been removed by commit
# d6ed682eba54 ("drm: Refactor drop/set master code a bit")
# in v4.8 (2016-06-21)
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
void conftest_drm_master_drop_has_from_release_arg(struct drm_driver *drv) {
drv->master_drop(NULL, NULL, false);
}"
compile_check_conftest "$CODE" "NV_DRM_MASTER_DROP_HAS_FROM_RELEASE_ARG" "" "types"
;;
drm_master_has_leases)
#
# Determine if drm_master has 'leases', 'lessor', 'lessee_idr' fields.
# Also checks for struct drm_mode_revoke_lease.
#
# Added by commits 2ed077e467ee ("drm: Add drm_object lease infrastructure [v5]")
# and 62884cd386b8 ("drm: Add four ioctls for managing drm mode object leases [v7]")
# in v4.15 (2017-10-24)
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_AUTH_H_PRESENT)
#include <drm/drm_auth.h>
#endif
#include <uapi/drm/drm_mode.h>
int conftest_drm_master_leases(void) {
return offsetof(struct drm_master, leases);
}
int conftest_drm_master_lessor(void) {
return offsetof(struct drm_master, lessor);
}
int conftest_drm_master_lessee_idr(void) {
return offsetof(struct drm_master, lessee_idr);
}
int conftest_drm_mode_revoke_lease(void) {
return offsetof(struct drm_mode_revoke_lease, lessee_id);
}"
compile_check_conftest "$CODE" "NV_DRM_MASTER_HAS_LEASES" "" "types"
;;
drm_file_get_master)
#
# Determine if function drm_file_get_master() is present.
#
# Added by commit 56f0729a510f ("drm: protect drm_master pointers in drm_lease.c")
# in v5.15 (2021-07-20)
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_AUTH_H_PRESENT)
#include <drm/drm_auth.h>
#endif
void conftest_drm_file_get_master(void) {
drm_file_get_master();
}"
compile_check_conftest "$CODE" "NV_DRM_FILE_GET_MASTER_PRESENT" "" "functions"
;;
drm_connector_lookup)
#
# Determine if function drm_connector_lookup() is present.
#
# Added by commit b164d31f50b2 ("drm/modes: add connector reference
# counting. (v2)") in v4.7 (2016-05-04), when it replaced
# drm_connector_find().
#
# It was originally added in drm_crtc.h, then moved to
# drm_connector.h by commit 522171951761
# ("drm: Extract drm_connector.[hc]") in v4.9 (2016-08-12)
#
CODE="
#if defined(NV_DRM_DRM_CRTC_H_PRESENT)
#include <drm/drm_crtc.h>
#endif
#if defined(NV_DRM_DRM_CONNECTOR_H_PRESENT)
#include <drm/drm_connector.h>
#endif
void conftest_drm_connector_lookup(void) {
drm_connector_lookup();
}"
compile_check_conftest "$CODE" "NV_DRM_CONNECTOR_LOOKUP_PRESENT" "" "functions"
;;
drm_connector_put)
#
# Determine if function drm_connector_put() is present.
#
# Added by commit ad09360750af ("drm: Introduce
# drm_connector_{get,put}()") in v4.12 (2017-02-28),
# when it replaced drm_connector_unreference() that
# was added with NV_DRM_CONNECTOR_LOOKUP_PRESENT.
#
CODE="
#if defined(NV_DRM_DRM_CONNECTOR_H_PRESENT)
#include <drm/drm_connector.h>
#endif
void conftest_drm_connector_put(void) {
drm_connector_put();
}"
compile_check_conftest "$CODE" "NV_DRM_CONNECTOR_PUT_PRESENT" "" "functions"
;;
drm_modeset_lock_all_end)
#
# Determine the number of arguments of the
# DRM_MODESET_LOCK_ALL_END() macro.
#
# DRM_MODESET_LOCK_ALL_END() is added with two arguments by commit
# b7ea04d299c7 (drm: drm: Add DRM_MODESET_LOCK_BEGIN/END helpers)
# in v5.0 (2018-11-29). The definition and prototype is changed to
# also take the third argument drm_device, by commit 77ef38574beb
# (drm/modeset-lock: Take the modeset BKL for legacy drivers)
# in v5.9 (2020-08-17).
#
DRM_MODESET_3_COMPILED=0
DRM_MODESET_2_COMPILED=0
DRM_MODESET_INCLUDES="
#if defined(NV_DRM_DRM_DEVICE_H_PRESENT)
#include <drm/drm_device.h>
#endif
#if defined(NV_DRM_DRM_DRV_H_PRESENT)
#include <drm/drm_drv.h>
#endif
#if defined(NV_DRM_DRM_MODESET_LOCK_H_PRESENT)
#include <drm/drm_modeset_lock.h>
#endif"
echo "$CONFTEST_PREAMBLE
$DRM_MODESET_INCLUDES
void conftest_drm_modeset_lock_all_end(
struct drm_device *dev,
struct drm_modeset_acquire_ctx ctx,
int ret) {
DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
DRM_MODESET_3_COMPILED=1
rm -f conftest$$.o
fi
echo "$CONFTEST_PREAMBLE
$DRM_MODESET_INCLUDES
void conftest_drm_modeset_lock_all_end(
struct drm_device *dev,
struct drm_modeset_acquire_ctx ctx,
int ret) {
DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
DRM_MODESET_LOCK_ALL_END(ctx, ret);
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
DRM_MODESET_2_COMPILED=1
rm -f conftest$$.o
fi
# If the macro is undefined, both code snippets will still compile,
# so we need to check both and make sure only one compiles successfully.
if [ "$DRM_MODESET_3_COMPILED" = "1" ] &&
[ "$DRM_MODESET_2_COMPILED" = "0" ]; then
echo "#define NV_DRM_MODESET_LOCK_ALL_END_ARGUMENT_COUNT 3" | append_conftest "functions"
elif [ "$DRM_MODESET_3_COMPILED" = "0" ] &&
[ "$DRM_MODESET_2_COMPILED" = "1" ]; then
echo "#define NV_DRM_MODESET_LOCK_ALL_END_ARGUMENT_COUNT 2" | append_conftest "functions"
else
echo "#define NV_DRM_MODESET_LOCK_ALL_END_ARGUMENT_COUNT 0" | append_conftest "functions"
fi
;;
drm_atomic_state_ref_counting)
#
# Determine if functions drm_atomic_state_get/put() are
# present.
#
# Added by commit 0853695c3ba4 ("drm: Add reference counting to
# drm_atomic_state") in v4.10 (2016-10-14)
#
CODE="
#if defined(NV_DRM_DRM_ATOMIC_H_PRESENT)
#include <drm/drm_atomic.h>
#endif
void conftest_drm_atomic_state_get(void) {
drm_atomic_state_get();
}"
compile_check_conftest "$CODE" "NV_DRM_ATOMIC_STATE_REF_COUNTING_PRESENT" "" "functions"
;;
vm_ops_fault_removed_vma_arg)
#
# Determine if vma.vm_ops.fault takes (vma, vmf), or just (vmf)
# args. Acronym key:
# vma: struct vm_area_struct
# vm_ops: struct vm_operations_struct
# vmf: struct vm_fault
#
# The redundant vma arg was removed from BOTH vma.vm_ops.fault and
# vma.vm_ops.page_mkwrite by commit 11bac8000449 ("mm, fs: reduce
# fault, page_mkwrite, and pfn_mkwrite to take only vmf") in
# v4.11 (2017-02-24)
#
CODE="
#include <linux/mm.h>
void conftest_vm_ops_fault_removed_vma_arg(void) {
struct vm_operations_struct vm_ops;
struct vm_fault *vmf;
(void)vm_ops.fault(vmf);
}"
compile_check_conftest "$CODE" "NV_VM_OPS_FAULT_REMOVED_VMA_ARG" "" "types"
;;
pnv_npu2_init_context)
#
# Determine if the pnv_npu2_init_context() function is
# present and the signature of its callback.
#
# Added by commit 1ab66d1fbada ("powerpc/powernv: Introduce
# address translation services for Nvlink2") in v4.12
# (2017-04-03).
#
echo "$CONFTEST_PREAMBLE
#if defined(NV_ASM_POWERNV_H_PRESENT)
#include <linux/pci.h>
#include <asm/powernv.h>
#endif
void conftest_pnv_npu2_init_context(void) {
pnv_npu2_init_context();
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
echo "#undef NV_PNV_NPU2_INIT_CONTEXT_PRESENT" | append_conftest "functions"
echo "#undef NV_PNV_NPU2_INIT_CONTEXT_CALLBACK_RETURNS_VOID" | append_conftest "functions"
rm -f conftest$$.o
return
fi
echo "#define NV_PNV_NPU2_INIT_CONTEXT_PRESENT" | append_conftest "functions"
# Check the callback signature
echo "$CONFTEST_PREAMBLE
#if defined(NV_ASM_POWERNV_H_PRESENT)
#include <linux/pci.h>
#include <asm/powernv.h>
#endif
struct npu_context *pnv_npu2_init_context(struct pci_dev *gpdev,
unsigned long flags,
void (*cb)(struct npu_context *, void *),
void *priv) {
return NULL;
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
echo "#define NV_PNV_NPU2_INIT_CONTEXT_CALLBACK_RETURNS_VOID" | append_conftest "functions"
rm -f conftest$$.o
return
fi
echo "#undef NV_PNV_NPU2_INIT_CONTEXT_CALLBACK_RETURNS_VOID" | append_conftest "functions"
;;
of_get_ibm_chip_id)
#
# Determine if the of_get_ibm_chip_id() function is present.
#
# Added by commit b130e7c04f11 ("powerpc: export
# of_get_ibm_chip_id function") in v4.2 (2015-05-07)
#
CODE="
#include <linux/version.h>
#if defined(NV_ASM_PROM_H_PRESENT)
#include <asm/prom.h>
#endif
void conftest_of_get_ibm_chip_id(void) {
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)
of_get_ibm_chip_id();
#endif
}"
compile_check_conftest "$CODE" "NV_OF_GET_IBM_CHIP_ID_PRESENT" "" "functions"
;;
drm_driver_unload_has_int_return_type)
#
# Determine if drm_driver::unload() returns integer value
#
# Changed to void by commit 11b3c20bdd15 ("drm: Change the return
# type of the unload hook to void") in v4.11 (2017-01-06)
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
int conftest_drm_driver_unload_has_int_return_type(struct drm_driver *drv) {
return drv->unload(NULL /* dev */);
}"
compile_check_conftest "$CODE" "NV_DRM_DRIVER_UNLOAD_HAS_INT_RETURN_TYPE" "" "types"
;;
is_export_symbol_present_*)
export_symbol_present_conftest $(echo $1 | cut -f5- -d_)
;;
is_export_symbol_gpl_*)
export_symbol_gpl_conftest $(echo $1 | cut -f5- -d_)
;;
drm_atomic_helper_crtc_destroy_state_has_crtc_arg)
#
# Determine if __drm_atomic_helper_crtc_destroy_state() has 'crtc'
# argument.
#
# 'crtc' argument removed by commit ec2dc6a0fe38 ("drm: Drop crtc
# argument from __drm_atomic_helper_crtc_destroy_state") in v4.7
# (2016-05-09)
#
CODE="
#if defined(NV_DRM_DRM_ATOMIC_HELPER_H_PRESENT)
#include <drm/drm_atomic_helper.h>
#endif
void conftest_drm_atomic_helper_crtc_destroy_state_has_crtc_arg(void) {
__drm_atomic_helper_crtc_destroy_state(NULL, NULL);
}"
compile_check_conftest "$CODE" "NV_DRM_ATOMIC_HELPER_CRTC_DESTROY_STATE_HAS_CRTC_ARG" "" "types"
;;
drm_atomic_helper_plane_destroy_state_has_plane_arg)
#
# Determine if __drm_atomic_helper_plane_destroy_state has
# 'plane' argument.
#
# 'plane' argument removed by commit 2f701695fd3a (drm: Drop plane
# argument from __drm_atomic_helper_plane_destroy_state") in v4.7
# (2016-05-09)
#
CODE="
#if defined(NV_DRM_DRM_ATOMIC_HELPER_H_PRESENT)
#include <drm/drm_atomic_helper.h>
#endif
void conftest_drm_atomic_helper_plane_destroy_state_has_plane_arg(void) {
__drm_atomic_helper_plane_destroy_state(NULL, NULL);
}"
compile_check_conftest "$CODE" "NV_DRM_ATOMIC_HELPER_PLANE_DESTROY_STATE_HAS_PLANE_ARG" "" "types"
;;
drm_atomic_helper_connector_dpms)
#
# Determine if the function drm_atomic_helper_connector_dpms() is present.
#
# Removed by commit 7d902c05b480 ("drm: Nuke
# drm_atomic_helper_connector_dpms") in v4.14 (2017-07-25)
#
CODE="
#if defined(NV_DRM_DRM_ATOMIC_HELPER_H_PRESENT)
#include <drm/drm_atomic_helper.h>
#endif
void conftest_drm_atomic_helper_connector_dpms(void) {
drm_atomic_helper_connector_dpms();
}"
compile_check_conftest "$CODE" "NV_DRM_ATOMIC_HELPER_CONNECTOR_DPMS_PRESENT" "" "functions"
;;
get_backlight_device_by_name)
#
# Determine if the get_backlight_device_by_name() function is present
#
CODE="
#include <linux/backlight.h>
int conftest_get_backlight_device_by_name(void) {
return get_backlight_device_by_name();
}"
compile_check_conftest "$CODE" "NV_GET_BACKLIGHT_DEVICE_BY_NAME_PRESENT" "" "functions"
;;
timer_setup)
#
# Determine if the function timer_setup() is present.
#
# Added by commit 686fef928bba ("timer: Prepare to change timer
# callback argument type") in v4.14 (2017-09-28)
#
CODE="
#include <linux/timer.h>
int conftest_timer_setup(void) {
return timer_setup();
}"
compile_check_conftest "$CODE" "NV_TIMER_SETUP_PRESENT" "" "functions"
;;
radix_tree_replace_slot)
#
# Determine if the radix_tree_replace_slot() function is
# present and how many arguments it takes.
#
# root parameter added to radix_tree_replace_slot (but the symbol
# was not exported) by commit 6d75f366b924 ("lib: radix-tree:
# check accounting of existing slot replacement users") in v4.10
# (2016-12-12)
#
# radix_tree_replace_slot symbol export added by commit
# 10257d719686 ("EXPORT_SYMBOL radix_tree_replace_slot") in v4.11
# (2017-01-11)
#
CODE="
#include <linux/radix-tree.h>
#include <linux/version.h>
void conftest_radix_tree_replace_slot(void) {
#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0)) || (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0))
radix_tree_replace_slot();
#endif
}"
compile_check_conftest "$CODE" "NV_RADIX_TREE_REPLACE_SLOT_PRESENT" "" "functions"
echo "$CONFTEST_PREAMBLE
#include <linux/radix-tree.h>
void conftest_radix_tree_replace_slot(void) {
radix_tree_replace_slot(NULL, NULL);
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
rm -f conftest$$.o
echo "#define NV_RADIX_TREE_REPLACE_SLOT_ARGUMENT_COUNT 2" | append_conftest "functions"
return
fi
echo "$CONFTEST_PREAMBLE
#include <linux/radix-tree.h>
void conftest_radix_tree_replace_slot(void) {
radix_tree_replace_slot(NULL, NULL, NULL);
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
rm -f conftest$$.o
echo "#define NV_RADIX_TREE_REPLACE_SLOT_ARGUMENT_COUNT 3" | append_conftest "functions"
return
else
echo "#error radix_tree_replace_slot() conftest failed!" | append_conftest "functions"
fi
;;
cpumask_of_node)
#
# Determine whether cpumask_of_node is available.
#
# ARM support for cpumask_of_node() lagged until commit 1a2db300348b
# ("arm64, numa: Add NUMA support for arm64 platforms.") in v4.7
# (2016-04-08)
#
CODE="
#include <asm/topology.h>
void conftest_cpumask_of_node(void) {
(void)cpumask_of_node();
}"
compile_check_conftest "$CODE" "NV_CPUMASK_OF_NODE_PRESENT" "" "functions"
;;
drm_mode_object_find_has_file_priv_arg)
#
# Determine if drm_mode_object_find() has 'file_priv' arguments.
#
# Updated to take 'file_priv' argument by commit 418da17214ac
# ("drm: Pass struct drm_file * to __drm_mode_object_find [v2]")
# in v4.15 (2017-03-14)
#
CODE="
#include <drm/drm_mode_object.h>
void conftest_drm_mode_object_find_has_file_priv_arg(
struct drm_device *dev,
struct drm_file *file_priv,
uint32_t id,
uint32_t type) {
(void)drm_mode_object_find(dev, file_priv, id, type);
}"
compile_check_conftest "$CODE" "NV_DRM_MODE_OBJECT_FIND_HAS_FILE_PRIV_ARG" | append_conftest "types"
;;
pci_enable_msix_range)
#
# Determine if the pci_enable_msix_range() function is present.
#
# Added by commit 302a2523c277 ("PCI/MSI: Add
# pci_enable_msi_range() and pci_enable_msix_range()") in v3.14
# (2013-12-30)
#
CODE="
#include <linux/pci.h>
void conftest_pci_enable_msix_range(void) {
pci_enable_msix_range();
}"
compile_check_conftest "$CODE" "NV_PCI_ENABLE_MSIX_RANGE_PRESENT" "" "functions"
;;
dma_buf_owner)
#
# Determine if the dma_buf struct has an owner member.
#
# Added by commit 9abdffe286c1 ("dma-buf: add ref counting for
# module as exporter") in v4.2 (2015-05-05)
#
CODE="
#include <linux/dma-buf.h>
int conftest_dma_buf_owner(void) {
return offsetof(struct dma_buf, owner);
}"
compile_check_conftest "$CODE" "NV_DMA_BUF_OWNER_PRESENT" "" "types"
;;
dma_buf_export_args)
#
# Determine argument count for dma_buf_export().
#
# 4 arguments added by commit d15bd7ee445d
# ("dma-buf: Introduce dma buffer sharing mechanism")
# in v3.3 (2011-12-26)
#
# Additional argument added by commit 3aac4502fd3f
# ("dma-buf: use reservation objects") in v3.17 (2014-07-01).
#
# Parameters wrapped in a single struct dma_buf_export_info by commit:
# d8fbe341beb6("dma-buf: cleanup dma_buf_export() to make it easily extensible")
# in v4.1 (2015-01-23).
#
echo "$CONFTEST_PREAMBLE
#include <linux/dma-buf.h>
struct dma_buf* conftest_dma_buf_export(void) {
return dma_buf_export(NULL);
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
rm -f conftest$$.o
echo "#define NV_DMA_BUF_EXPORT_ARGUMENT_COUNT 1" | append_conftest "functions"
return
fi
echo "$CONFTEST_PREAMBLE
#include <linux/dma-buf.h>
struct dma_buf* conftest_dma_buf_export(void) {
return dma_buf_export(NULL, NULL, 0, 0);
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
rm -f conftest$$.o
echo "#define NV_DMA_BUF_EXPORT_ARGUMENT_COUNT 4" | append_conftest "functions"
return
fi
echo "$CONFTEST_PREAMBLE
#include <linux/dma-buf.h>
struct dma_buf* conftest_dma_buf_export(void) {
return dma_buf_export(NULL, NULL, 0, 0, NULL);
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
rm -f conftest$$.o
echo "#define NV_DMA_BUF_EXPORT_ARGUMENT_COUNT 5" | append_conftest "functions"
return
fi
echo "#error dma_buf_export() conftest failed!" | append_conftest "functions"
;;
dma_buf_ops_has_kmap)
#
# Determine if .kmap exists in dma_buf_ops.
# In some kernels, this is a mandatory callback.
#
# Added by commit fc13020e086b
# ("dma-buf: add support for kernel cpu access") in v3.4 (2012-03-20)
#
echo "$CONFTEST_PREAMBLE
#include <linux/dma-buf.h>
int conftest_dma_buf_ops_has_kmap(void) {
return offsetof(struct dma_buf_ops, kmap);
}
int conftest_dma_buf_ops_has_kunmap(void) {
return offsetof(struct dma_buf_ops, kunmap);
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
echo "#define NV_DMA_BUF_OPS_HAS_KMAP" | append_conftest "types"
rm -f conftest$$.o
return
else
echo "#undef NV_DMA_BUF_OPS_HAS_KMAP" | append_conftest "types"
return
fi
;;
dma_buf_ops_has_kmap_atomic)
#
# Determine if .kmap_atomic exists in dma_buf_ops.
# In some kernels, this is a mandatory callback.
#
# Added by commit fc13020e086b
# ("dma-buf: add support for kernel cpu access")in v3.4 (2012-03-20)
#
echo "$CONFTEST_PREAMBLE
#include <linux/dma-buf.h>
int conftest_dma_buf_ops_has_kmap_atomic(void) {
return offsetof(struct dma_buf_ops, kmap_atomic);
}
int conftest_dma_buf_ops_has_kunmap_atomic(void) {
return offsetof(struct dma_buf_ops, kunmap_atomic);
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
echo "#define NV_DMA_BUF_OPS_HAS_KMAP_ATOMIC" | append_conftest "types"
rm -f conftest$$.o
return
else
echo "#undef NV_DMA_BUF_OPS_HAS_KMAP_ATOMIC" | append_conftest "types"
return
fi
;;
dma_buf_ops_has_map)
#
# Determine if .map exists in dma_buf_ops.
# In some kernels, this is a mandatory callback.
#
# Added by commit f9b67f0014cb
# ("dma-buf: Rename dma-ops to prevent conflict with kunmap_atomic macro")
# in v4.12 (2017-04-19)
#
# Removed as a mandatory callback by commit f82aab2d521e
# ("dma-buf: Remove requirement for ops->map() from dma_buf_export")
# in v4.20 (2018-08-07)
#
# Completely removed from dma-buf by commit 4337ebbbbda3
# ("dma-buf: Remove kernel map/unmap hooks") in v5.6 (2019-11-18)
#
echo "$CONFTEST_PREAMBLE
#include <linux/dma-buf.h>
int conftest_dma_buf_ops_has_map(void) {
return offsetof(struct dma_buf_ops, map);
}
int conftest_dma_buf_ops_has_unmap(void) {
return offsetof(struct dma_buf_ops, unmap);
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
echo "#define NV_DMA_BUF_OPS_HAS_MAP" | append_conftest "types"
rm -f conftest$$.o
return
else
echo "#undef NV_DMA_BUF_OPS_HAS_MAP" | append_conftest "types"
return
fi
;;
dma_buf_ops_has_map_atomic)
#
# Determine if map_atomic/unmap_atomic exists in dma_buf_ops.
# In some kernels, this is a mandatory callback.
#
# Added by commit f9b67f0014cb
# ("dma-buf: Rename dma-ops to prevent conflict with kunmap_atomic macro")
# in v4.12 (2017-04-19)
#
# Removed by commit f664a5269542
# ("dma-buf: remove kmap_atomic interface") in v4.19 (2018-05-28)
#
echo "$CONFTEST_PREAMBLE
#include <linux/dma-buf.h>
int conftest_dma_buf_ops_has_map_atomic(void) {
return offsetof(struct dma_buf_ops, map_atomic);
}
int conftest_dma_buf_ops_has_unmap_atomic(void) {
return offsetof(struct dma_buf_ops, unmap_atomic);
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
echo "#define NV_DMA_BUF_OPS_HAS_MAP_ATOMIC" | append_conftest "types"
rm -f conftest$$.o
return
else
echo "#undef NV_DMA_BUF_OPS_HAS_MAP_ATOMIC" | append_conftest "types"
return
fi
;;
dma_buf_has_dynamic_attachment)
#
# Determine if the function dma_buf_attachment_is_dynamic()
# is present.
#
# Added by commit: 15fd552d186c
# ("dma-buf: change DMA-buf locking convention v3") in v5.5 (2018-07-03)
#
echo "$CONFTEST_PREAMBLE
#include <linux/dma-buf.h>
bool conftest_dma_buf_attachment_is_dynamic(void) {
return dma_buf_attachment_is_dynamic(NULL);
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
echo "#define NV_DMA_BUF_HAS_DYNAMIC_ATTACHMENT" | append_conftest "functions"
rm -f conftest$$.o
return
else
echo "#undef NV_DMA_BUF_HAS_DYNAMIC_ATTACHMENT" | append_conftest "functions"
return
fi
;;
dma_buf_attachment_has_peer2peer)
#
# Determine if peer2peer is present in struct dma_buf_attachment.
# peer2peer being true indicates that a dma-buf importer is able
# to handle peer resources not backed by struct page.
#
# Added by commit: 09606b5446c2
# ("dma-buf: add peer2peer flag") in v5.8 (2018-03-22)
#
echo "$CONFTEST_PREAMBLE
#include <linux/dma-buf.h>
int conftest_dma_buf_peer2peer(void) {
return offsetof(struct dma_buf_attachment, peer2peer);
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
echo "#define NV_DMA_BUF_ATTACHMENT_HAS_PEER2PEER" | append_conftest "types"
rm -f conftest$$.o
return
else
echo "#undef NV_DMA_BUF_ATTACHMENT_HAS_PEER2PEER" | append_conftest "types"
return
fi
;;
drm_connector_funcs_have_mode_in_name)
#
# Determine if _mode_ is present in connector function names. We
# only test drm_mode_connector_attach_encoder() and assume the
# other functions are changed in sync.
#
# drm_mode_connector_attach_encoder() was renamed to
# drm_connector_attach_encoder() by commit cde4c44d8769 ("drm:
# drop _mode_ from drm_mode_connector_attach_encoder") in v4.19
# (2018-07-09)
#
# drm_mode_connector_update_edid_property() was renamed by commit
# c555f02371c3 ("drm: drop _mode_ from update_edit_property()")
# in v4.19 (2018-07-09).
#
# The other DRM functions were renamed by commit 97e14fbeb53f
# ("drm: drop _mode_ from remaining connector functions") in v4.19
# (2018-07-09)
#
# Note that drm_connector.h by introduced by commit 522171951761
# ("drm: Extract drm_connector.[hc]") in v4.9 (2016-08-12)
#
# Note: up to 4.9 function was provided by drm_crtc.h by commit
# f453ba046074 in 2.6.29 (2008-12-29)
#
CODE="
#if defined(NV_DRM_DRM_CONNECTOR_H_PRESENT)
#include <drm/drm_connector.h>
#endif
#if defined(NV_DRM_DRM_CRTC_H_PRESENT)
#include <drm/drm_crtc.h>
#endif
void conftest_drm_connector_funcs_have_mode_in_name(void) {
drm_mode_connector_attach_encoder();
}"
compile_check_conftest "$CODE" "NV_DRM_CONNECTOR_FUNCS_HAVE_MODE_IN_NAME" "" "functions"
;;
drm_connector_has_vrr_capable_property)
#
# Determine if drm_connector_attach_vrr_capable_property and
# drm_connector_set_vrr_capable_property is present
#
# Added by commit ba1b0f6c73d4 ("drm: Add vrr_capable property to
# the drm connector") in v5.0.
#
CODE="
#if defined(NV_DRM_DRM_CONNECTOR_H_PRESENT)
#include <drm/drm_connector.h>
#endif
void conftest_drm_connector_has_vrr_capable_property(void) {
drm_connector_attach_vrr_capable_property();
}"
compile_check_conftest "$CODE" "NV_DRM_CONNECTOR_HAS_VRR_CAPABLE_PROPERTY" "" "functions"
;;
vm_fault_t)
#
# Determine if vm_fault_t is present
#
# Added by commit 1c8f422059ae5da07db7406ab916203f9417e396 ("mm:
# change return type to vm_fault_t") in v4.17 (2018-04-05)
#
CODE="
#include <linux/mm.h>
vm_fault_t conftest_vm_fault_t;
"
compile_check_conftest "$CODE" "NV_VM_FAULT_T_IS_PRESENT" "" "types"
;;
vmf_insert_pfn)
#
# Determine if the function vmf_insert_pfn() is
# present.
#
# Added by commit 1c8f422059ae5da07db7406ab916203f9417e396 ("mm:
# change return type to vm_fault_t") in v4.17 (2018-04-05)
#
CODE="
#include <linux/mm.h>
void conftest_vmf_insert_pfn(void) {
vmf_insert_pfn();
}"
compile_check_conftest "$CODE" "NV_VMF_INSERT_PFN_PRESENT" "" "functions"
;;
drm_framebuffer_get)
#
# Determine if the function drm_framebuffer_get() is present.
#
# Added by commit a4a69da06bc1 ("drm: Introduce
# drm_framebuffer_{get,put}()") in v4.12 (2017-02-28).
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_FRAMEBUFFER_H_PRESENT)
#include <drm/drm_framebuffer.h>
#endif
void conftest_drm_framebuffer_get(void) {
drm_framebuffer_get();
}"
compile_check_conftest "$CODE" "NV_DRM_FRAMEBUFFER_GET_PRESENT" "" "functions"
;;
drm_gem_object_get)
#
# Determine if the function drm_gem_object_get() is present.
#
# Added by commit e6b62714e87c ("drm: Introduce
# drm_gem_object_{get,put}()") in v4.12 (2017-02-28).
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_GEM_H_PRESENT)
#include <drm/drm_gem.h>
#endif
void conftest_drm_gem_object_get(void) {
drm_gem_object_get();
}"
compile_check_conftest "$CODE" "NV_DRM_GEM_OBJECT_GET_PRESENT" "" "functions"
;;
drm_dev_put)
#
# Determine if the function drm_dev_put() is present.
#
# Added by commit 9a96f55034e4 ("drm: introduce drm_dev_{get/put}
# functions") in v4.15 (2017-09-26).
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_DRV_H_PRESENT)
#include <drm/drm_drv.h>
#endif
void conftest_drm_dev_put(void) {
drm_dev_put();
}"
compile_check_conftest "$CODE" "NV_DRM_DEV_PUT_PRESENT" "" "functions"
;;
drm_connector_list_iter)
#
# Determine if the drm_connector_list_iter struct is present.
#
# Added by commit 613051dac40da1751ab269572766d3348d45a197 ("drm:
# locking&new iterators for connector_list") in v4.11 (2016-12-14).
#
CODE="
#if defined(NV_DRM_DRM_DEVICE_H_PRESENT)
#include <drm/drm_device.h>
#endif
#if defined(NV_DRM_DRM_MODE_CONFIG_H_PRESENT)
#include <drm/drm_mode_config.h>
#endif
#include <drm/drm_connector.h>
int conftest_drm_connector_list_iter(void) {
struct drm_connector_list_iter conn_iter;
return 0;
}"
compile_check_conftest "$CODE" "NV_DRM_CONNECTOR_LIST_ITER_PRESENT" "" "types"
#
# Determine if the function drm_connector_list_iter_get() is
# renamed to drm_connector_list_iter_begin().
#
# Renamed by b982dab1e66d2b998e80a97acb6eaf56518988d3 (drm: Rename
# connector list iterator API) in v4.12 (2017-02-28).
#
CODE="
#if defined(NV_DRM_DRM_CONNECTOR_H_PRESENT)
#include <drm/drm_connector.h>
#endif
void conftest_drm_connector_list_iter_begin(void) {
drm_connector_list_iter_begin();
}"
compile_check_conftest "$CODE" "NV_DRM_CONNECTOR_LIST_ITER_BEGIN_PRESENT" "" "functions"
;;
drm_atomic_helper_swap_state_has_stall_arg)
#
# Determine if drm_atomic_helper_swap_state() has 'stall' argument.
#
# drm_atomic_helper_swap_state() function prototype updated to take
# 'state' and 'stall' arguments by commit
# 5e84c2690b805caeff3b4c6c9564c7b8de54742d (drm/atomic-helper:
# Massage swap_state signature somewhat)
# in v4.8 (2016-06-10).
#
CODE="
#include <drm/drm_atomic_helper.h>
void conftest_drm_atomic_helper_swap_state_has_stall_arg(
struct drm_atomic_state *state,
bool stall) {
(void)drm_atomic_helper_swap_state(state, stall);
}"
compile_check_conftest "$CODE" "NV_DRM_ATOMIC_HELPER_SWAP_STATE_HAS_STALL_ARG" | append_conftest "types"
#
# Determine if drm_atomic_helper_swap_state() returns int.
#
# drm_atomic_helper_swap_state() function prototype
# updated to return int by commit
# c066d2310ae9bbc695c06e9237f6ea741ec35e43 (drm/atomic: Change
# drm_atomic_helper_swap_state to return an error.) in v4.14
# (2017-07-11).
#
CODE="
#include <drm/drm_atomic_helper.h>
int conftest_drm_atomic_helper_swap_state_return_int(
struct drm_atomic_state *state,
bool stall) {
return drm_atomic_helper_swap_state(state, stall);
}"
compile_check_conftest "$CODE" "NV_DRM_ATOMIC_HELPER_SWAP_STATE_RETURN_INT" | append_conftest "types"
;;
pm_runtime_available)
#
# Determine if struct dev_pm_info has the 'usage_count' field.
#
# This was added to the kernel in commit 5e928f77a09a0 in v2.6.32
# (2008-08-18), but originally were dependent on CONFIG_PM_RUNTIME,
# which was folded into the more generic CONFIG_PM in commit
# d30d819dc8310 in v3.19 (2014-11-27).
# Rather than attempt to select the appropriate CONFIG option,
# simply check if this member is present.
#
CODE="
#include <linux/pm.h>
void pm_runtime_conftest(void) {
struct dev_pm_info dpmi;
atomic_set(&dpmi.usage_count, 1);
}"
compile_check_conftest "$CODE" "NV_PM_RUNTIME_AVAILABLE" "" "generic"
;;
dma_direct_map_resource)
#
# Determine whether dma_is_direct() exists.
#
# dma_is_direct() was added by commit 356da6d0cde3 ("dma-mapping:
# bypass indirect calls for dma-direct") in 5.1 (2018-12-06).
#
# If dma_is_direct() does exist, then we assume that
# dma_direct_map_resource() exists. Both functions were added
# as part of the same patchset.
#
# The presence of dma_is_direct() and dma_direct_map_resource()
# means that dma_direct can perform DMA mappings itself.
#
CODE="
#include <linux/dma-mapping.h>
void conftest_dma_is_direct(void) {
dma_is_direct();
}"
compile_check_conftest "$CODE" "NV_DMA_IS_DIRECT_PRESENT" "" "functions"
;;
tegra_get_platform)
#
# Determine if tegra_get_platform() function is present
#
CODE="
#if defined NV_SOC_TEGRA_CHIP_ID_H_PRESENT
#include <soc/tegra/chip-id.h>
#elif defined(NV_SOC_TEGRA_FUSE_H_PRESENT)
#include <soc/tegra/fuse.h>
#endif
void conftest_tegra_get_platform(void) {
tegra_get_platform(0);
}
"
compile_check_conftest "$CODE" "NV_TEGRA_GET_PLATFORM_PRESENT" "" "functions"
;;
tegra_bpmp_send_receive)
#
# Determine if tegra_bpmp_send_receive() function is present
#
CODE="
#if defined NV_SOC_TEGRA_TEGRA_BPMP_H_PRESENT
#include <soc/tegra/tegra_bpmp.h>
#endif
int conftest_tegra_bpmp_send_receive(
int mrq,
void *ob_data,
int ob_sz,
void *ib_data,
int ib_sz) {
return tegra_bpmp_send_receive(mrq, ob_data, ob_sz, ib_data, ib_sz);
}
"
compile_check_conftest "$CODE" "NV_TEGRA_BPMP_SEND_RECEIVE" "" "functions"
;;
cmd_uphy_display_port_init)
#
# Determine if CMD_UPHY_DISPLAY_PORT_INIT enum present in bpmp-abi header
# This enum is used only in Tegra down-stream kernel.
#
CODE="
#include <stdint.h>
#include <soc/tegra/bpmp-abi.h>
int conftest_cmd_uphy_display_port_init(void) {
return CMD_UPHY_DISPLAY_PORT_INIT;
}
"
compile_check_conftest "$CODE" "NV_CMD_UPHY_DISPLAY_PORT_INIT_PRESENT" "" "generic"
;;
cmd_uphy_display_port_off)
#
# Determine if CMD_UPHY_DISPLAY_PORT_OFF enum present in bpmp-abi header
# This enum is used only in Tegra down-stream kernel.
#
CODE="
#include <stdint.h>
#include <soc/tegra/bpmp-abi.h>
int conftest_cmd_uphy_display_port_off(void) {
return CMD_UPHY_DISPLAY_PORT_OFF;
}
"
compile_check_conftest "$CODE" "NV_CMD_UPHY_DISPLAY_PORT_OFF_PRESENT" "" "generic"
;;
drm_alpha_blending_available)
#
# Determine if the DRM subsystem supports alpha blending
#
# This conftest using "generic" rather than "functions" because
# with the logic of "functions" the presence of
# *either*_alpha_property or _blend_mode_property would be enough
# to cause NV_DRM_ALPHA_BLENDING_AVAILABLE to be defined.
# drm_plane_create_alpha_property was added by commit
# ae0e28265e21 ("drm/blend: Add a generic alpha property") in
# v4.18.
#
# drm_plane_create_blend_mode_property was added by commit
# a5ec8332d428 ("drm: Add per-plane pixel blend mode property")
# in v4.20.
#
CODE="
#if defined(NV_DRM_DRM_BLEND_H_PRESENT)
#include <drm/drm_blend.h>
#endif
void conftest_drm_alpha_blending_available(void) {
(void)drm_plane_create_alpha_property;
(void)drm_plane_create_blend_mode_property;
}"
compile_check_conftest "$CODE" "NV_DRM_ALPHA_BLENDING_AVAILABLE" "" "generic"
;;
drm_rotation_available)
#
# Determine if the DRM subsystem supports rotation.
#
# drm_plane_create_rotation_property() was added by commit
# d138dd3c0c70 ("drm: Add support for optional per-plane rotation
# property") in v4.10. Presence of it is sufficient to say that
# DRM subsystem support rotation.
#
CODE="
#if defined(NV_DRM_DRM_BLEND_H_PRESENT)
#include <drm/drm_blend.h>
#endif
void conftest_drm_rotation_available(void) {
drm_plane_create_rotation_property();
}"
compile_check_conftest "$CODE" "NV_DRM_ROTATION_AVAILABLE" "" "functions"
;;
drm_driver_prime_flag_present)
#
# Determine whether driver feature flag DRIVER_PRIME is present.
#
# The DRIVER_PRIME flag was added by commit 3248877ea179 (drm:
# base prime/dma-buf support (v5)) in v3.4 (2011-11-25) and is
# removed by commit 0424fdaf883a ("drm/prime: Actually remove
# DRIVER_PRIME everywhere") in v5.4.
#
# DRIVER_PRIME definition moved from drmP.h to drm_drv.h by
# commit 85e634bce01a (drm: Extract drm_drv.h) in v4.10
# (2016-11-14).
#
# DRIVER_PRIME define is changed to enum value by commit
# 0e2a933b02c9 (drm: Switch DRIVER_ flags to an enum) in v5.1
# (2019-01-29).
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_DRV_H_PRESENT)
#include <drm/drm_drv.h>
#endif
unsigned int drm_driver_prime_flag_present_conftest(void) {
return DRIVER_PRIME;
}"
compile_check_conftest "$CODE" "NV_DRM_DRIVER_PRIME_FLAG_PRESENT" "" "types"
;;
drm_connector_for_each_possible_encoder)
#
# Determine the number of arguments of the
# drm_connector_for_each_possible_encoder() macro.
#
# drm_connector_for_each_possible_encoder() is added by commit
# 83aefbb887b5 (drm: Add drm_connector_for_each_possible_encoder())
# in v4.19. The definition and prototype is changed to take only
# two arguments connector and encoder by commit 62afb4ad425a
# ("drm/connector: Allow max possible encoders to attach to a
# connector") in v5.5.
#
echo "$CONFTEST_PREAMBLE
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_CONNECTOR_H_PRESENT)
#include <drm/drm_connector.h>
#endif
void conftest_drm_connector_for_each_possible_encoder(
struct drm_connector *connector,
struct drm_encoder *encoder,
int i) {
drm_connector_for_each_possible_encoder(connector, encoder, i) {
}
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
echo "#define NV_DRM_CONNECTOR_FOR_EACH_POSSIBLE_ENCODER_ARGUMENT_COUNT 3" | append_conftest "functions"
rm -f conftest$$.o
return
else
echo "#define NV_DRM_CONNECTOR_FOR_EACH_POSSIBLE_ENCODER_ARGUMENT_COUNT 2" | append_conftest "functions"
fi
;;
mmu_notifier_ops_invalidate_range)
#
# Determine if the mmu_notifier_ops struct has the
# 'invalidate_range' member.
#
# struct mmu_notifier_ops.invalidate_range was added by commit
# 0f0a327fa12cd55de5e7f8c05a70ac3d047f405e ("mmu_notifier: add the
# callback for mmu_notifier_invalidate_range()") in v3.19
# (2014-11-13).
CODE="
#include <linux/mmu_notifier.h>
int conftest_mmu_notifier_ops_invalidate_range(void) {
return offsetof(struct mmu_notifier_ops, invalidate_range);
}"
compile_check_conftest "$CODE" "NV_MMU_NOTIFIER_OPS_HAS_INVALIDATE_RANGE" "" "types"
;;
mmu_notifier_ops_arch_invalidate_secondary_tlbs)
#
# Determine if the mmu_notifier_ops struct has the
# 'arch_invalidate_secondary_tlbs' member.
#
# struct mmu_notifier_ops.invalidate_range was renamed to
# arch_invalidate_secondary_tlbs by commit 1af5a8109904
# ("mmu_notifiers: rename invalidate_range notifier") due to be
# added in v6.6
CODE="
#include <linux/mmu_notifier.h>
int conftest_mmu_notifier_ops_arch_invalidate_secondary_tlbs(void) {
return offsetof(struct mmu_notifier_ops, arch_invalidate_secondary_tlbs);
}"
compile_check_conftest "$CODE" "NV_MMU_NOTIFIER_OPS_HAS_ARCH_INVALIDATE_SECONDARY_TLBS" "" "types"
;;
drm_format_num_planes)
#
# Determine if drm_format_num_planes() function is present.
#
# The drm_format_num_planes() function was added by commit
# d0d110e09629 drm: Add drm_format_num_planes() utility function in
# v3.3 (2011-12-20). Prototype was moved from drm_crtc.h to
# drm_fourcc.h by commit ae4df11a0f53 (drm: Move format-related
# helpers to drm_fourcc.c) in v4.8 (2016-06-09).
# drm_format_num_planes() has been removed by commit 05c452c115bf
# (drm: Remove users of drm_format_num_planes) removed v5.3
# (2019-05-16).
#
CODE="
#if defined(NV_DRM_DRM_CRTC_H_PRESENT)
#include <drm/drm_crtc.h>
#endif
#if defined(NV_DRM_DRM_FOURCC_H_PRESENT)
#include <drm/drm_fourcc.h>
#endif
void conftest_drm_format_num_planes(void) {
drm_format_num_planes();
}
"
compile_check_conftest "$CODE" "NV_DRM_FORMAT_NUM_PLANES_PRESENT" "" "functions"
;;
drm_gem_object_has_resv)
#
# Determine if the 'drm_gem_object' structure has a 'resv' field.
#
# A 'resv' filed in the 'drm_gem_object' structure, is added by
# commit 1ba627148ef5 (drm: Add reservation_object to
# drm_gem_object) in v5.2.
#
CODE="$CONFTEST_PREAMBLE
#if defined(NV_DRM_DRM_GEM_H_PRESENT)
#include <drm/drm_gem.h>
#endif
int conftest_drm_gem_object_has_resv(void) {
return offsetof(struct drm_gem_object, resv);
}"
compile_check_conftest "$CODE" "NV_DRM_GEM_OBJECT_HAS_RESV" "" "types"
;;
proc_ops)
#
# Determine if the 'struct proc_ops' type is present.
#
# Added by commit d56c0d45f0e2 ("proc: decouple proc from VFS
# with "struct proc_ops"") in v5.6.
#
CODE="
#include <linux/proc_fs.h>
struct proc_ops p_ops;
"
compile_check_conftest "$CODE" "NV_PROC_OPS_PRESENT" "" "types"
;;
drm_crtc_state_has_async_flip)
#
# Determine if the 'drm_crtc_state' structure has a 'async_flip'
# field.
#
# Commit 4d85f45c73a2 (drm/atomic: Rename crtc_state->pageflip_flags
# to async_flip) replaced 'pageflip_flags' by 'async_flip' in v5.4.
#
CODE="
#if defined(NV_DRM_DRM_CRTC_H_PRESENT)
#include <drm/drm_crtc.h>
#endif
int conftest_drm_crtc_state_has_async_flip(void) {
return offsetof(struct drm_crtc_state, async_flip);
}"
compile_check_conftest "$CODE" "NV_DRM_CRTC_STATE_HAS_ASYNC_FLIP" "" "types"
;;
drm_crtc_state_has_pageflip_flags)
#
# Determine if the 'drm_crtc_state' structure has a
# 'pageflip_flags' field.
#
# 'pageflip_flags' added by commit 6cbe5c466d73 (drm/atomic: Save
# flip flags in drm_crtc_state) in v4.12. Commit 4d85f45c73a2
# (drm/atomic: Rename crtc_state->pageflip_flags to async_flip)
# replaced 'pageflip_flags' by 'async_flip' in v5.4.
#
CODE="
#if defined(NV_DRM_DRM_CRTC_H_PRESENT)
#include <drm/drm_crtc.h>
#endif
int conftest_drm_crtc_state_has_pageflip_flags(void) {
return offsetof(struct drm_crtc_state, pageflip_flags);
}"
compile_check_conftest "$CODE" "NV_DRM_CRTC_STATE_HAS_PAGEFLIP_FLAGS" "" "types"
;;
drm_crtc_state_has_vrr_enabled)
#
# Determine if 'drm_crtc_state' structure has a
# 'vrr_enabled' field.
#
# Added by commit 1398958cfd8d ("drm: Add vrr_enabled property to
# drm CRTC") in v5.0.
#
CODE="
#if defined(NV_DRM_DRM_CRTC_H_PRESENT)
#include <drm/drm_crtc.h>
#endif
int conftest_drm_crtc_state_has_vrr_enabled(void) {
return offsetof(struct drm_crtc_state, vrr_enabled);
}"
compile_check_conftest "$CODE" "NV_DRM_CRTC_STATE_HAS_VRR_ENABLED" "" "types"
;;
ktime_get_raw_ts64)
#
# Determine if ktime_get_raw_ts64() is present
#
# Added by commit fb7fcc96a86cf ("timekeeping: Standardize on
# ktime_get_*() naming") in 4.18 (2018-04-27)
#
CODE="
#include <linux/ktime.h>
void conftest_ktime_get_raw_ts64(void){
ktime_get_raw_ts64();
}"
compile_check_conftest "$CODE" "NV_KTIME_GET_RAW_TS64_PRESENT" "" "functions"
;;
ktime_get_real_ts64)
#
# Determine if ktime_get_real_ts64() is present
#
# Added by commit d6d29896c665d ("timekeeping: Provide timespec64
# based interfaces") in 3.17 (2014-07-16)
#
CODE="
#include <linux/ktime.h>
void conftest_ktime_get_real_ts64(void){
ktime_get_real_ts64();
}"
compile_check_conftest "$CODE" "NV_KTIME_GET_REAL_TS64_PRESENT" "" "functions"
;;
drm_format_modifiers_present)
#
# Determine whether the base DRM format modifier support is present.
#
# This will show up in a few places:
#
# -Definition of the format modifier constructor macro, which
# we can use to reconstruct our bleeding-edge format modifiers
# when the local kernel headers don't include them.
#
# -The first set of format modifier vendor macros, including the
# poorly named "NV" vendor, which was later renamed "NVIDIA".
#
# -the "modifier[]" member of the AddFB2 ioctl's parameter
# structure.
#
# All these were added by commit e3eb3250d84e ("drm: add support
# for tiled/compressed/etc modifier in addfb2") in v4.1.
#
CODE="
#include <drm/drm_mode.h>
#include <drm/drm_fourcc.h>
int conftest_fourcc_fb_modifiers(void) {
u64 my_fake_mod = fourcc_mod_code(INTEL, 0);
(void)my_fake_mod;
return offsetof(struct drm_mode_fb_cmd2, modifier);
}"
compile_check_conftest "$CODE" "NV_DRM_FORMAT_MODIFIERS_PRESENT" "" "types"
;;
timespec64)
#
# Determine if struct timespec64 is present
# Added by commit 361a3bf00582 ("time64: Add time64.h header and
# define struct timespec64") in 3.17 (2014-07-16)
#
CODE="
#include <linux/time.h>
struct timespec64 ts64;
"
compile_check_conftest "$CODE" "NV_TIMESPEC64_PRESENT" "" "types"
;;
vmalloc_has_pgprot_t_arg)
#
# Determine if __vmalloc has the 'pgprot' argument.
#
# The third argument to __vmalloc, page protection
# 'pgprot_t prot', was removed by commit 88dca4ca5a93
# (mm: remove the pgprot argument to __vmalloc)
# in v5.8.
#
CODE="
#include <linux/vmalloc.h>
void conftest_vmalloc_has_pgprot_t_arg(void) {
pgprot_t prot;
(void)__vmalloc(0, 0, prot);
}"
compile_check_conftest "$CODE" "NV_VMALLOC_HAS_PGPROT_T_ARG" "" "types"
;;
mm_has_mmap_lock)
#
# Determine if the 'mm_struct' structure has a 'mmap_lock' field.
#
# Kernel commit da1c55f1b272 ("mmap locking API: rename mmap_sem
# to mmap_lock") replaced the field 'mmap_sem' by 'mmap_lock'
# in v5.8.
#
CODE="
#include <linux/mm_types.h>
int conftest_mm_has_mmap_lock(void) {
return offsetof(struct mm_struct, mmap_lock);
}"
compile_check_conftest "$CODE" "NV_MM_HAS_MMAP_LOCK" "" "types"
;;
full_name_hash)
#
# Determine how many arguments full_name_hash takes.
#
# Changed by commit 8387ff2577e ("vfs: make the string hashes salt
# the hash") in v4.8 (2016-06-10)
#
echo "$CONFTEST_PREAMBLE
#include <linux/stringhash.h>
void conftest_full_name_hash(void) {
full_name_hash(NULL, NULL, 0);
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
rm -f conftest$$.o
echo "#define NV_FULL_NAME_HASH_ARGUMENT_COUNT 3" | append_conftest "functions"
else
echo "#define NV_FULL_NAME_HASH_ARGUMENT_COUNT 2" | append_conftest "functions"
fi
;;
drm_vma_offset_exact_lookup_locked)
#
# Determine if the drm_vma_offset_exact_lookup_locked() function
# is present.
#
# Added by commit 2225cfe46bcc ("drm/gem: Use kref_get_unless_zero
# for the weak mmap references") in v4.4
#
CODE="
#include <drm/drm_vma_manager.h>
void conftest_drm_vma_offset_exact_lookup_locked(void) {
drm_vma_offset_exact_lookup_locked();
}"
compile_check_conftest "$CODE" "NV_DRM_VMA_OFFSET_EXACT_LOOKUP_LOCKED_PRESENT" "" "functions"
;;
drm_vma_node_is_allowed_has_tag_arg)
#
# Determine if drm_vma_node_is_allowed() has 'tag' arguments of
# 'struct drm_file *' type.
#
# Updated to take 'tag' argument by commit d9a1f0b4eb60 ("drm: use
# drm_file to tag vm-bos") in v4.9
#
CODE="
#include <drm/drm_vma_manager.h>
bool drm_vma_node_is_allowed(struct drm_vma_offset_node *node,
struct drm_file *tag) {
return true;
}"
compile_check_conftest "$CODE" "NV_DRM_VMA_NODE_IS_ALLOWED_HAS_TAG_ARG" | append_conftest "types"
;;
drm_vma_offset_node_has_readonly)
#
# Determine if the 'drm_vma_offset_node' structure has a 'readonly'
# field.
#
# Added by commit 3e977ac6179b ("drm/i915: Prevent writing into a
# read-only object via a GGTT mmap") in v4.19.
#
CODE="
#include <drm/drm_vma_manager.h>
int conftest_drm_vma_offset_node_has_readonly(void) {
return offsetof(struct drm_vma_offset_node, readonly);
}"
compile_check_conftest "$CODE" "NV_DRM_VMA_OFFSET_NODE_HAS_READONLY" "" "types"
;;
pci_enable_atomic_ops_to_root)
#
# pci_enable_atomic_ops_to_root was added by commit 430a23689dea
# ("PCI: Add pci_enable_atomic_ops_to_root()") in v4.16.
#
CODE="
#include <linux/pci.h>
void conftest_pci_enable_atomic_ops_to_root(void) {
pci_enable_atomic_ops_to_root();
}"
compile_check_conftest "$CODE" "NV_PCI_ENABLE_ATOMIC_OPS_TO_ROOT_PRESENT" "" "functions"
;;
kvmalloc)
#
# Determine if kvmalloc() is present
#
# Added by commit a7c3e901a46ff54c016d040847eda598a9e3e653 ("mm:
# introduce kv[mz]alloc helpers") in v4.12 (2017-05-08).
#
CODE="
#include <linux/mm.h>
void conftest_kvmalloc(void){
kvmalloc();
}"
compile_check_conftest "$CODE" "NV_KVMALLOC_PRESENT" "" "functions"
;;
drm_gem_object_put_unlocked)
#
# Determine if the function drm_gem_object_put_unlocked() is present.
#
# Replaced with a transient macro by commit 2f4dd13d4bb8 ("drm/gem:
# add drm_gem_object_put helper") in v5.9.
#
# Finally removed by commit ab15d56e27be ("drm: remove transient
# drm_gem_object_put_unlocked()") in v5.9.
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_GEM_H_PRESENT)
#include <drm/drm_gem.h>
#endif
void conftest_drm_gem_object_put_unlocked(void) {
drm_gem_object_put_unlocked();
}"
compile_check_conftest "$CODE" "NV_DRM_GEM_OBJECT_PUT_UNLOCK_PRESENT" "" "functions"
;;
drm_display_mode_has_vrefresh)
#
# Determine if the 'drm_display_mode' structure has a 'vrefresh'
# field.
#
# Removed by commit 0425662fdf05 ("drm: Nuke mode->vrefresh") in
# v5.9.
#
CODE="
#include <drm/drm_modes.h>
int conftest_drm_display_mode_has_vrefresh(void) {
return offsetof(struct drm_display_mode, vrefresh);
}"
compile_check_conftest "$CODE" "NV_DRM_DISPLAY_MODE_HAS_VREFRESH" "types"
;;
drm_driver_master_set_has_int_return_type)
#
# Determine if drm_driver::master_set() returns integer value
#
# Changed to void by commit 907f53200f98 ("drm: vmwgfx: remove
# drm_driver::master_set() return type") in v5.9.
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_DRV_H_PRESENT)
#include <drm/drm_drv.h>
#endif
int conftest_drm_driver_master_set_has_int_return_type(struct drm_driver *drv,
struct drm_device *dev, struct drm_file *file_priv, bool from_open) {
return drv->master_set(dev, file_priv, from_open);
}"
compile_check_conftest "$CODE" "NV_DRM_DRIVER_SET_MASTER_HAS_INT_RETURN_TYPE" "" "types"
;;
drm_driver_has_gem_free_object)
#
# Determine if the 'drm_driver' structure has a 'gem_free_object'
# function pointer.
#
# drm_driver::gem_free_object is removed by commit 1a9458aeb8eb
# ("drm: remove drm_driver::gem_free_object") in v5.9.
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_DRV_H_PRESENT)
#include <drm/drm_drv.h>
#endif
int conftest_drm_driver_has_gem_free_object(void) {
return offsetof(struct drm_driver, gem_free_object);
}"
compile_check_conftest "$CODE" "NV_DRM_DRIVER_HAS_GEM_FREE_OBJECT" "" "types"
;;
vga_tryget)
#
# Determine if vga_tryget() is present
#
# vga_tryget() was removed by commit f369bc3f9096 ("vgaarb: mark
# vga_tryget static") in v5.9.
#
CODE="
#include <linux/vgaarb.h>
void conftest_vga_tryget(void) {
vga_tryget();
}"
compile_check_conftest "$CODE" "NV_VGA_TRYGET_PRESENT" "" "functions"
;;
pci_channel_state)
#
# Determine if pci_channel_state enum type is present.
#
# pci_channel_state was removed by commit 16d79cd4e23b ("PCI: Use
# 'pci_channel_state_t' instead of 'enum pci_channel_state'") in
# v5.9.
#
CODE="
#include <linux/pci.h>
enum pci_channel_state state;
"
compile_check_conftest "$CODE" "NV_PCI_CHANNEL_STATE_PRESENT" "" "types"
;;
cc_platform_has)
#
# Determine if 'cc_platform_has()' is present.
#
# Added by commit aa5a461171f9 ("x86/sev: Add an x86 version of
# cc_platform_has()") in v5.16.
#
CODE="
#if defined(NV_LINUX_CC_PLATFORM_H_PRESENT)
#include <linux/cc_platform.h>
#endif
void conftest_cc_platfrom_has(void) {
cc_platform_has();
}"
compile_check_conftest "$CODE" "NV_CC_PLATFORM_PRESENT" "" "functions"
;;
cc_attr_guest_sev_snp)
#
# Determine if 'CC_ATTR_GUEST_SEV_SNP' is present.
#
# Added by commit aa5a461171f9 ("x86/mm: Extend cc_attr to
# include AMD SEV-SNP") in v5.19.
#
CODE="
#if defined(NV_LINUX_CC_PLATFORM_H_PRESENT)
#include <linux/cc_platform.h>
#endif
enum cc_attr cc_attributes = CC_ATTR_GUEST_SEV_SNP;
"
compile_check_conftest "$CODE" "NV_CC_ATTR_SEV_SNP" "" "types"
;;
hv_get_isolation_type)
#
# Determine if 'hv_get_isolation_type()' is present.
# Added by commit faff44069ff5 ("x86/hyperv: Add Write/Read MSR
# registers via ghcb page") in v5.16.
#
CODE="
#if defined(NV_ASM_MSHYPERV_H_PRESENT)
#include <asm/mshyperv.h>
#endif
void conftest_hv_get_isolation_type(void) {
int i;
hv_get_isolation_type(i);
}"
compile_check_conftest "$CODE" "NV_HV_GET_ISOLATION_TYPE" "" "functions"
;;
drm_prime_pages_to_sg_has_drm_device_arg)
#
# Determine if drm_prime_pages_to_sg() has 'dev' argument.
#
# drm_prime_pages_to_sg() is updated to take 'dev' argument by
# commit 707d561f77b5 ("drm: allow limiting the scatter list
# size.") in v5.10.
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_PRIME_H_PRESENT)
#include <drm/drm_prime.h>
#endif
struct sg_table *drm_prime_pages_to_sg(struct drm_device *dev,
struct page **pages,
unsigned int nr_pages) {
return 0;
}"
compile_check_conftest "$CODE" "NV_DRM_PRIME_PAGES_TO_SG_HAS_DRM_DEVICE_ARG" "" "types"
;;
drm_driver_has_gem_prime_callbacks)
#
# Determine if drm_driver structure has the GEM and PRIME callback
# function pointers.
#
# The GEM and PRIME callbacks are removed from drm_driver
# structure by commit d693def4fd1c ("drm: Remove obsolete GEM and
# PRIME callbacks from struct drm_driver") in v5.11.
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_DRV_H_PRESENT)
#include <drm/drm_drv.h>
#endif
void conftest_drm_driver_has_gem_and_prime_callbacks(void) {
struct drm_driver drv;
drv.gem_prime_pin = 0;
drv.gem_prime_get_sg_table = 0;
drv.gem_prime_vmap = 0;
drv.gem_prime_vunmap = 0;
drv.gem_vm_ops = 0;
}"
compile_check_conftest "$CODE" "NV_DRM_DRIVER_HAS_GEM_PRIME_CALLBACKS" "" "types"
;;
drm_crtc_atomic_check_has_atomic_state_arg)
#
# Determine if drm_crtc_helper_funcs::atomic_check takes 'state'
# argument of 'struct drm_atomic_state' type.
#
# Commit 29b77ad7b9ca ("drm/atomic: Pass the full state to CRTC
# atomic_check") in v5.11 passed the full atomic state to
# drm_crtc_helper_funcs::atomic_check()
#
# To test the signature of drm_crtc_helper_funcs::atomic_check(),
# declare a function prototype with typeof ::atomic_check(), and then
# define the corresponding function implementation with the expected
# signature. Successful compilation indicates that ::atomic_check()
# has the expected signature.
#
echo "$CONFTEST_PREAMBLE
#include <drm/drm_modeset_helper_vtables.h>
static const struct drm_crtc_helper_funcs *funcs;
typeof(*funcs->atomic_check) conftest_drm_crtc_atomic_check_has_atomic_state_arg;
int conftest_drm_crtc_atomic_check_has_atomic_state_arg(
struct drm_crtc *crtc, struct drm_atomic_state *state) {
return 0;
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
rm -f conftest$$.o
echo "#define NV_DRM_CRTC_ATOMIC_CHECK_HAS_ATOMIC_STATE_ARG" | append_conftest "types"
else
echo "#undef NV_DRM_CRTC_ATOMIC_CHECK_HAS_ATOMIC_STATE_ARG" | append_conftest "types"
fi
;;
drm_gem_object_vmap_has_map_arg)
#
# Determine if drm_gem_object_funcs::vmap takes 'map'
# argument of 'struct dma_buf_map' type.
#
# drm_gem_object_funcs::vmap is updated to take 'map' argument by
# commit 49a3f51dfeee ("drm/gem: Use struct dma_buf_map in GEM
# vmap ops and convert GEM backends") in v5.11.
#
# Note that the 'map' argument type is changed from 'struct dma_buf_map'
# to 'struct iosys_map' by commit 7938f4218168 ("dma-buf-map: Rename
# to iosys-map) in v5.18.
#
CODE="
#include <drm/drm_gem.h>
int conftest_drm_gem_object_vmap_has_map_arg(
struct drm_gem_object *obj) {
return obj->funcs->vmap(obj, NULL);
}"
compile_check_conftest "$CODE" "NV_DRM_GEM_OBJECT_VMAP_HAS_MAP_ARG" "" "types"
;;
seq_read_iter)
#
# Determine if seq_read_iter() is present
#
# seq_read_iter() was added by commit d4d50710a8b4 ("seq_file:
# add seq_read_iter") in v5.10.
#
CODE="
#include <linux/seq_file.h>
void conftest_seq_read_iter(void) {
seq_read_iter();
}"
compile_check_conftest "$CODE" "NV_SEQ_READ_ITER_PRESENT" "" "functions"
;;
pci_class_multimedia_hd_audio)
#
# Determine if 'PCI_CLASS_MULTIMEDIA_HD_AUDIO' macro is present
# in <linux/pci_ids.h>.
#
# The commit 07f4f97d7b4b ("vga_switcheroo: Use device link for HDA
# controller") has moved 'PCI_CLASS_MULTIMEDIA_HD_AUDIO' macro from
# <sound/hdaudio.h> to <linux/pci_ids.h> in v4.17.
#
CODE="
#include <linux/pci_ids.h>
unsigned int conftest_pci_class_multimedia_hd_audio(void) {
return PCI_CLASS_MULTIMEDIA_HD_AUDIO;
}"
compile_check_conftest "$CODE" "NV_PCI_CLASS_MULTIMEDIA_HD_AUDIO_PRESENT" "" "generic"
;;
follow_pfn)
#
# Determine if follow_pfn() is present.
#
# follow_pfn() was added by commit 3b6748e2dd69
# ("mm: introduce follow_pfn()") in v2.6.31-rc1, and removed
# by commit 233eb0bf3b94 ("mm: remove follow_pfn")
# from linux-next 233eb0bf3b94.
#
CODE="
#include <linux/mm.h>
void conftest_follow_pfn(void) {
follow_pfn();
}"
compile_check_conftest "$CODE" "NV_FOLLOW_PFN_PRESENT" "" "functions"
;;
follow_pte_arg_vma)
#
# Determine if the first argument of follow_pte is
# mm_struct or vm_area_struct.
#
# The first argument was changed from mm_struct to vm_area_struct by
# commit 29ae7d96d166 ("mm: pass VMA instead of MM to follow_pte()")
#
CODE="
#include <linux/mm.h>
typeof(follow_pte) conftest_follow_pte_has_vma_arg;
int conftest_follow_pte_has_vma_arg(struct vm_area_struct *vma,
unsigned long address,
pte_t **ptep,
spinlock_t **ptl) {
return 0;
}"
compile_check_conftest "$CODE" "NV_FOLLOW_PTE_ARG1_VMA" "" "types"
;;
ptep_get)
#
# Determine if ptep_get() is present.
#
# ptep_get() was added by commit 481e980a7c19
# ("mm: Allow arches to provide ptep_get()")
#
CODE="
#include <linux/mm.h>
void conftest_ptep_get(void) {
ptep_get();
}"
compile_check_conftest "$CODE" "NV_PTEP_GET_PRESENT" "" "functions"
;;
drm_plane_atomic_check_has_atomic_state_arg)
#
# Determine if drm_plane_helper_funcs::atomic_check takes 'state'
# argument of 'struct drm_atomic_state' type.
#
# Commit 7c11b99a8e58 ("drm/atomic: Pass the full state to planes
# atomic_check") in v5.13 passes the full atomic state to
# drm_plane_helper_funcs::atomic_check()
#
# To test the signature of drm_plane_helper_funcs::atomic_check(),
# declare a function prototype with typeof ::atomic_check(), and then
# define the corresponding function implementation with the expected
# signature. Successful compilation indicates that ::atomic_check()
# has the expected signature.
#
echo "$CONFTEST_PREAMBLE
#include <drm/drm_modeset_helper_vtables.h>
static const struct drm_plane_helper_funcs *funcs;
typeof(*funcs->atomic_check) conftest_drm_plane_atomic_check_has_atomic_state_arg;
int conftest_drm_plane_atomic_check_has_atomic_state_arg(
struct drm_plane *plane, struct drm_atomic_state *state) {
return 0;
}" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
rm -f conftest$$.o
echo "#define NV_DRM_PLANE_ATOMIC_CHECK_HAS_ATOMIC_STATE_ARG" | append_conftest "types"
else
echo "#undef NV_DRM_PLANE_ATOMIC_CHECK_HAS_ATOMIC_STATE_ARG" | append_conftest "types"
fi
;;
ib_peer_memory_symbols)
#
# Determine if the following symbols exist in Module.symvers:
# 1. ib_register_peer_memory_client
# 2. ib_unregister_peer_memory_client
# The conftest first checks in the kernel's own Module.symvers in
# the regular path. If the symbols are not found there, it's possible
# that MOFED is installed and check for these symbols in MOFED's
# Module.symvers whose path is different from the kernel's symvers.
#
# Note: KERNELRELEASE and ARCH are defined by Kbuild and automatically
# passed down to conftest.sh as env vars.
MLNX_OFED_KERNEL_DIR=/usr/src/ofa_kernel
VAR_DKMS_SOURCES_DIR=$(test -d /var/lib/dkms/mlnx-ofed-kernel &&
ls -d /var/lib/dkms/mlnx-ofed-kernel/*/build 2>/dev/null)
if check_for_ib_peer_memory_symbols "$OUTPUT" || \
check_for_ib_peer_memory_symbols "$MLNX_OFED_KERNEL_DIR/$ARCH/$KERNELRELEASE" || \
check_for_ib_peer_memory_symbols "$MLNX_OFED_KERNEL_DIR/$KERNELRELEASE" || \
check_for_ib_peer_memory_symbols "$MLNX_OFED_KERNEL_DIR/default" || \
check_for_ib_peer_memory_symbols "$VAR_DKMS_SOURCES_DIR"; then
echo "#define NV_MLNX_IB_PEER_MEM_SYMBOLS_PRESENT" | append_conftest "symbols"
else
echo "#undef NV_MLNX_IB_PEER_MEM_SYMBOLS_PRESENT" | append_conftest "symbols"
fi
;;
add_memory_driver_managed)
#
# Determine if the add_memory_driver_managed function is present
#
# Added by commit 7b7b27214bba ("mm/memory_hotplug: introduce
# add_memory_driver_managed()") in v5.8.
#
# Before commit 3a0aaefe4134 ("mm/memory_hotplug: guard more
# declarations by CONFIG_MEMORY_HOTPLUG") in v5.10, the
# add_memory_driver_managed() was not guarded.
#
CODE="
#include <linux/memory_hotplug.h>
void conftest_add_memory_driver_managed() {
#if defined(CONFIG_MEMORY_HOTPLUG)
add_memory_driver_managed();
#endif
}"
compile_check_conftest "$CODE" "NV_ADD_MEMORY_DRIVER_MANAGED_PRESENT" "" "functions"
;;
add_memory_driver_managed_has_mhp_flags_arg)
#
# Check if add_memory_driver_managed() has mhp_flags arg.
#
# Added by commit b6117199787c ("mm/memory_hotplug: prepare
# passing flags to add_memory() and friends") in v5.10.
#
CODE="
#include <linux/memory_hotplug.h>
int add_memory_driver_managed(int nid, u64 start, u64 size,
const char *resource_name,
mhp_t mhp_flags) {
return 0;
}"
compile_check_conftest "$CODE" "NV_ADD_MEMORY_DRIVER_MANAGED_HAS_MHP_FLAGS_ARG" "" "types"
;;
remove_memory_has_nid_arg)
#
# Check if remove_memory() has nid parameter.
#
# Removed by commit e1c158e49566 ("mm/memory_hotplug: remove nid
# parameter from remove_memory() and friends") in v5.15.
#
CODE="
#include <linux/memory_hotplug.h>
int remove_memory(int nid, u64 start, u64 size) {
return 0;
}"
compile_check_conftest "$CODE" "NV_REMOVE_MEMORY_HAS_NID_ARG" "" "types"
;;
offline_and_remove_memory)
#
# Determine if the offline_and_remove_memory function is present.
#
# Added by commit 08b3acd7a68f ("mm/memory_hotplug: Introduce
# offline_and_remove_memory()") in v5.8.
#
CODE="
#include <linux/memory_hotplug.h>
void conftest_offline_and_remove_memory() {
offline_and_remove_memory();
}"
compile_check_conftest "$CODE" "NV_OFFLINE_AND_REMOVE_MEMORY_PRESENT" "" "functions"
;;
device_property_read_u64)
#
# Determine if the device_property_read_u64 function is present
#
# Added by commit b31384fa5de3 ("Driver core: Unified device
# properties interface for platform firmware") in v3.19.
#
CODE="
#include <linux/acpi.h>
void conftest_device_property_read_u64() {
device_property_read_u64();
}"
compile_check_conftest "$CODE" "NV_DEVICE_PROPERTY_READ_U64_PRESENT" "" "functions"
;;
of_property_count_elems_of_size)
#
# Determine if of_property_count_elems_of_size is present
#
# Added by commit ad54a0cfbeb4 ("of: add functions to count
# number of elements in a property") in v3.15.
#
# Moved from base.c to property.c by commit 1df09bc66f9b ("of:
# Move OF property and graph API from base.c to property.c") in
# v4.13.
#
# Test if linux/of.h header file inclusion is successful or not,
# depending on that check, for of_property_count_elems_of_size
# presence
#
echo "$CONFTEST_PREAMBLE
#include <linux/of.h>
" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
rm -f conftest$$.o
CODE="
#include <linux/of.h>
void conftest_of_property_count_elems_of_size() {
of_property_count_elems_of_size();
}"
compile_check_conftest "$CODE" "NV_OF_PROPERTY_COUNT_ELEMS_OF_SIZE_PRESENT" "" "functions"
else
echo "#undef NV_OF_PROPERTY_COUNT_ELEMS_OF_SIZE_PRESENT" | append_conftest "functions"
fi
;;
of_property_read_variable_u8_array)
#
# Determine if of_property_read_variable_u8_array is present
#
# Added by commit a67e9472da42 ("of: Add array read functions
# with min/max size limits") in v4.9.
#
# Moved from base.c to property.c by commit 1df09bc66f9b ("of:
# Move OF property and graph API from base.c to property.c") in
# v4.13.
#
# Test if linux/of.h header file inclusion is successful or not,
# depending on that, check for of_property_read_variable_u8_array
# presence
#
echo "$CONFTEST_PREAMBLE
#include <linux/of.h>
" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
rm -f conftest$$.o
CODE="
#include <linux/of.h>
void conftest_of_property_read_variable_u8_array() {
of_property_read_variable_u8_array();
}"
compile_check_conftest "$CODE" "NV_OF_PROPERTY_READ_VARIABLE_U8_ARRAY_PRESENT" "" "functions"
else
echo "#undef NV_OF_PROPERTY_READ_VARIABLE_U8_ARRAY_PRESENT" | append_conftest "functions"
fi
;;
of_property_read_variable_u32_array)
#
# Determine if of_property_read_variable_u32_array is present
#
# Added by commit a67e9472da42 ("of: Add array read functions
# with min/max size limits") in v4.9.
#
# Moved from base.c to property.c by commit 1df09bc66f9b ("of:
# Move OF property and graph API from base.c to property.c") in
# v4.13.
#
# Note: this can probably be combined with the
# of_property_read_variable_u8_array conftest above.
#
# Test if linux/of.h header file inclusion is successful or not,
# depending on that, check for of_property_read_variable_u32_array
# presence
#
echo "$CONFTEST_PREAMBLE
#include <linux/of.h>
" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
rm -f conftest$$.o
CODE="
#include <linux/of.h>
void conftest_of_property_read_variable_u32_array() {
of_property_read_variable_u32_array();
}"
compile_check_conftest "$CODE" "NV_OF_PROPERTY_READ_VARIABLE_U32_ARRAY_PRESENT" "" "functions"
else
echo "#undef NV_OF_PROPERTY_READ_VARIABLE_U32_ARRAY_PRESENT" | append_conftest "functions"
fi
;;
module_import_ns_takes_string_literal)
#
# Determine if the MODULE_IMPORT_NS macro takes a string literal
# or constant.
#
# Commit cdd30ebb1b9f ("module: Convert symbol namespace to
# string literal") changed MODULE_IMPORT_NS to take a string
# literal in Linux kernel v6.13.
#
CODE="
#include <linux/module.h>
MODULE_IMPORT_NS(DMA_BUF);"
compile_check_conftest "$CODE" "NV_MODULE_IMPORT_NS_TAKES_STRING_LITERAL" "" "functions"
;;
devm_of_platform_populate)
#
# Determine if devm_of_platform_populate() function is present
#
# Added by commit 38b0b219fbe8 ("of: add devm_ functions for
# populate and depopulate") in v4.12.
#
CODE="
#if defined(NV_LINUX_OF_PLATFORM_H_PRESENT)
#include <linux/of_platform.h>
#endif
void conftest_devm_of_platform_populate(void)
{
devm_of_platform_populate(NULL, NULL);
}
"
compile_check_conftest "$CODE" "NV_DEVM_OF_PLATFORM_POPULATE_PRESENT" "" "functions"
;;
of_dma_configure)
#
# Determine if of_dma_configure() function is present
#
# Added by commit 591c1ee465ce ("of: configure the platform
# device dma parameters") in v3.16. However, it was a static,
# non-exported function at that time.
#
# It was moved from platform.c to device.c and made public by
# commit 1f5c69aa51f9 ("of: Move of_dma_configure() to device.c
# to help re-use") in v4.1.
#
CODE="
#if defined(NV_LINUX_OF_DEVICE_H_PRESENT)
#include <linux/of_device.h>
#endif
void conftest_of_dma_configure(void)
{
of_dma_configure();
}
"
compile_check_conftest "$CODE" "NV_OF_DMA_CONFIGURE_PRESENT" "" "functions"
;;
icc_get)
#
# Determine if icc_get() function is present
#
# Added by commit 11f1ceca7031 ("interconnect: Add generic
# on-chip interconnect API") in v5.1.
#
CODE="
#if defined(NV_LINUX_INTERCONNECT_H_PRESENT)
#include <linux/interconnect.h>
#endif
void conftest_icc_get(void)
{
icc_get();
}
"
compile_check_conftest "$CODE" "NV_ICC_GET_PRESENT" "" "functions"
;;
icc_set_bw)
#
# Determine if icc_set_bw() function is present
#
# Added by commit 11f1ceca7031 ("interconnect: Add generic
# on-chip interconnect API") in v5.1.
#
CODE="
#if defined(NV_LINUX_INTERCONNECT_H_PRESENT)
#include <linux/interconnect.h>
#endif
void conftest_icc_set_bw(void)
{
icc_set_bw();
}
"
compile_check_conftest "$CODE" "NV_ICC_SET_BW_PRESENT" "" "functions"
;;
icc_put)
#
# Determine if icc_put() function is present
#
# Added by commit 11f1ceca7031 ("interconnect: Add generic
# on-chip interconnect API") in v5.1.
#
CODE="
#if defined(NV_LINUX_INTERCONNECT_H_PRESENT)
#include <linux/interconnect.h>
#endif
void conftest_icc_put(void)
{
icc_put();
}
"
compile_check_conftest "$CODE" "NV_ICC_PUT_PRESENT" "" "functions"
;;
i2c_new_client_device)
#
# Determine if i2c_new_client_device() function is present
#
# Added by commit 390fd0475af5 ("i2c: remove deprecated
# i2c_new_device API") in v5.8.
#
CODE="
#include <linux/i2c.h>
void conftest_i2c_new_client_device(void)
{
i2c_new_client_device();
}
"
compile_check_conftest "$CODE" "NV_I2C_NEW_CLIENT_DEVICE_PRESENT" "" "functions"
;;
i2c_unregister_device)
#
# Determine if i2c_unregister_device() function is present
#
# Added by commit 9c1600eda42e ("i2c: Add i2c_board_info and
# i2c_new_device()") in v2.6.22.
#
CODE="
#include <linux/i2c.h>
void conftest_i2c_unregister_device(void)
{
i2c_unregister_device();
}
"
compile_check_conftest "$CODE" "NV_I2C_UNREGISTER_DEVICE_PRESENT" "" "functions"
;;
of_get_named_gpio)
#
# Determine if of_get_named_gpio() function is present
#
# Added by commit a6b0919140b4 ("of/gpio: Add new method for
# getting gpios under different property names") in v3.1.
#
CODE="
#if defined(NV_LINUX_OF_GPIO_H_PRESENT)
#include <linux/of_gpio.h>
#endif
void conftest_of_get_named_gpio(void)
{
of_get_named_gpio();
}
"
compile_check_conftest "$CODE" "NV_OF_GET_NAME_GPIO_PRESENT" "" "functions"
;;
devm_gpio_request_one)
#
# Determine if devm_gpio_request_one() function is present
#
# Added by commit 09d71ff19404 ("gpiolib: Implement
# devm_gpio_request_one()") in v3.5.
#
CODE="
#if defined(NV_LINUX_GPIO_H_PRESENT)
#include <linux/gpio.h>
#endif
void conftest_devm_gpio_request_one(void)
{
devm_gpio_request_one();
}
"
compile_check_conftest "$CODE" "NV_DEVM_GPIO_REQUEST_ONE_PRESENT" "" "functions"
;;
gpio_direction_input)
#
# Determine if gpio_direction_input() function is present
#
# Added by commit c7caf86823c7 ("gpio: remove
# gpio_ensure_requested()") in v3.17.
#
CODE="
#if defined(NV_LINUX_GPIO_H_PRESENT)
#include <linux/gpio.h>
#endif
void conftest_gpio_direction_input(void)
{
gpio_direction_input();
}
"
compile_check_conftest "$CODE" "NV_GPIO_DIRECTION_INPUT_PRESENT" "" "functions"
;;
gpio_direction_output)
#
# Determine if gpio_direction_output() function is present
#
# Added by commit c7caf86823c7 ("gpio: remove
# gpio_ensure_requested()") in v3.17.
#
CODE="
#if defined(NV_LINUX_GPIO_H_PRESENT)
#include <linux/gpio.h>
#endif
void conftest_gpio_direction_output(void)
{
gpio_direction_output();
}
"
compile_check_conftest "$CODE" "NV_GPIO_DIRECTION_OUTPUT_PRESENT" "" "functions"
;;
gpio_get_value)
#
# Determine if gpio_get_value() function is present
#
# Added by commit 7563bbf89d06 ("gpiolib/arches: Centralise
# bolierplate asm/gpio.h") in v3.5.
#
CODE="
#if defined(NV_LINUX_GPIO_H_PRESENT)
#include <linux/gpio.h>
#endif
void conftest_gpio_get_value(void)
{
gpio_get_value();
}
"
compile_check_conftest "$CODE" "NV_GPIO_GET_VALUE_PRESENT" "" "functions"
;;
gpio_set_value)
#
# Determine if gpio_set_value() function is present
#
# Added by commit 7563bbf89d06 ("gpiolib/arches: Centralise
# bolierplate asm/gpio.h") in v3.5.
#
CODE="
#if defined(NV_LINUX_GPIO_H_PRESENT)
#include <linux/gpio.h>
#endif
void conftest_gpio_set_value(void)
{
gpio_set_value();
}
"
compile_check_conftest "$CODE" "NV_GPIO_SET_VALUE_PRESENT" "" "functions"
;;
gpio_to_irq)
#
# Determine if gpio_to_irq() function is present
#
# Added by commit 7563bbf89d06 ("gpiolib/arches: Centralise
# bolierplate asm/gpio.h") in v3.5.
#
CODE="
#if defined(NV_LINUX_GPIO_H_PRESENT)
#include <linux/gpio.h>
#endif
void conftest_gpio_to_irq(void)
{
gpio_to_irq();
}
"
compile_check_conftest "$CODE" "NV_GPIO_TO_IRQ_PRESENT" "" "functions"
;;
migrate_vma_added_flags)
#
# Determine if migrate_vma structure has flags
#
# Added by commit 5143192cd410 ("mm/migrate: add a flags
# parameter to migrate_vma") in v5.9.
#
CODE="
#include <linux/migrate.h>
int conftest_migrate_vma_added_flags(void) {
return offsetof(struct migrate_vma, flags);
}"
compile_check_conftest "$CODE" "NV_MIGRATE_VMA_FLAGS_PRESENT" "" "types"
;;
drm_device_has_pdev)
#
# Determine if the 'drm_device' structure has a 'pdev' field.
#
# Removed by commit b347e04452ff ("drm: Remove pdev field from
# struct drm_device") in v5.14.
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_DEVICE_H_PRESENT)
#include <drm/drm_device.h>
#endif
int conftest_drm_device_has_pdev(void) {
return offsetof(struct drm_device, pdev);
}"
compile_check_conftest "$CODE" "NV_DRM_DEVICE_HAS_PDEV" "" "types"
;;
make_device_exclusive_range)
#
# Determine if the make_device_exclusive_range() function is present
#
# make_device_exclusive_range() function was added by commit
# b756a3b5e7ead ("mm: device exclusive memory access") in v5.14
# (2021-06-30).
CODE="
#include <linux/rmap.h>
int conftest_make_device_exclusive_range(void) {
make_device_exclusive_range();
}"
compile_check_conftest "$CODE" "NV_MAKE_DEVICE_EXCLUSIVE_RANGE_PRESENT" "" "functions"
;;
migrate_device_range)
#
# Determine if the migrate_device_range() function is present
#
# migrate_device_range() function was added by commit
# e778406b40dbb ("mm/migrate_device.c: add migrate_device_range()")
# in v6.1 (2022-09-28).
CODE="
#include <linux/migrate.h>
int conftest_migrate_device_range(void) {
migrate_device_range();
}"
compile_check_conftest "$CODE" "NV_MIGRATE_DEVICE_RANGE_PRESENT" "" "functions"
;;
ioasid_get)
#
# Determine if ioasid_get() function is present
#
# Added by commit cb4789b0d19f ("iommu/ioasid: Add ioasid
# references") in v5.11.
#
CODE="
#if defined(NV_LINUX_IOASID_H_PRESENT)
#include <linux/ioasid.h>
#endif
void conftest_ioasid_get(void) {
ioasid_get();
}"
compile_check_conftest "$CODE" "NV_IOASID_GET_PRESENT" "" "functions"
;;
mm_pasid_drop)
#
# Determine if mm_pasid_drop() function is present
#
# Added by commit 701fac40384f ("iommu/sva: Assign a PASID to mm
# on PASID allocation and free it on mm exit") in v5.18.
# Moved to linux/iommu.h in commit cd3891158a77 ("iommu/sva: Move
# PASID helpers to sva code") in v6.4.
#
CODE="
#if defined(NV_LINUX_SCHED_MM_H_PRESENT)
#include <linux/sched/mm.h>
#endif
#include <linux/iommu.h>
void conftest_mm_pasid_drop(void) {
mm_pasid_drop();
}"
compile_check_conftest "$CODE" "NV_MM_PASID_DROP_PRESENT" "" "functions"
;;
iommu_is_dma_domain)
#
# Determine if iommu_is_dma_domain() function is present
# this also assumes that iommu_get_domain_for_dev() function is
# present.
#
# Added by commit bf3aed4660c6 ("iommu: Introduce explicit type
# for non-strict DMA domains") in v5.15
#
CODE="
#include <linux/iommu.h>
void conftest_iommu_is_dma_domain(void) {
iommu_is_dma_domain();
}"
compile_check_conftest "$CODE" "NV_IOMMU_IS_DMA_DOMAIN_PRESENT" "" "functions"
;;
drm_crtc_state_has_no_vblank)
#
# Determine if the 'drm_crtc_state' structure has 'no_vblank'.
#
# Added by commit b25c60af7a87 ("drm/crtc: Add a generic
# infrastructure to fake VBLANK events") in v4.19.
#
CODE="
#include <drm/drm_crtc.h>
void conftest_drm_crtc_state_has_no_vblank(void) {
struct drm_crtc_state foo;
(void)foo.no_vblank;
}"
compile_check_conftest "$CODE" "NV_DRM_CRTC_STATE_HAS_NO_VBLANK" "" "types"
;;
drm_mode_config_has_allow_fb_modifiers)
#
# Determine if the 'drm_mode_config' structure has
# an 'allow_fb_modifiers' field.
#
# an 'allow_fb_modifiers' field in the 'drm_mode_config' structure,
# is added by commit e3eb3250d84e ("drm: add support for
# tiled/compressed/etc modifier in addfb2") in v4.1, and removed by
# commit 3d082157a242 ("drm: remove allow_fb_modifiers") in v5.18.
#
# The 'struct drm_mode_config' definition, is moved to
# drm_mode_config.h file by commit 28575f165d36 ("drm: Extract
# drm_mode_config.[hc]") in v4.10.
#
CODE="$CONFTEST_PREAMBLE
#if defined(NV_DRM_DRM_MODE_CONFIG_H_PRESENT)
#include <drm/drm_mode_config.h>
#else
#include <drm/drm_crtc.h>
#endif
int conftest_drm_mode_config_has_allow_fb_modifiers(void) {
return offsetof(struct drm_mode_config, allow_fb_modifiers);
}"
compile_check_conftest "$CODE" "NV_DRM_MODE_CONFIG_HAS_ALLOW_FB_MODIFIERS" "" "types"
;;
dma_set_mask_and_coherent)
#
# Determine if dma_set_mask_and_coherent function is present.
# Added by commit 4aa806b771d1 ("DMA-API: provide a helper to set both DMA
# and coherent DMA masks") in v3.13 (2013-06-26).
#
CODE="
#include <linux/dma-mapping.h>
void conftest_dma_set_mask_and_coherent(void) {
dma_set_mask_and_coherent();
}"
compile_check_conftest "$CODE" "NV_DMA_SET_MASK_AND_COHERENT_PRESENT" "" "functions"
;;
drm_has_hdr_output_metadata)
#
# Determine if drm_mode.h has 'hdr_output_metadata' structure.
#
# Added by commit fbb5d0353c62 ("drm: Add HDR source metadata
# property") in v5.3.
#
CODE="
#include <drm/drm_mode.h>
void conftest_drm_has_hdr_output_metadata(void) {
struct hdr_output_metadata foo;
(void)foo;
}"
compile_check_conftest "$CODE" "NV_DRM_HAS_HDR_OUTPUT_METADATA" "" "types"
;;
uts_release)
#
# print the kernel's UTS_RELEASE string.
#
echo "#include <generated/utsrelease.h>
UTS_RELEASE" > conftest$$.c
$CC $CFLAGS -E -P conftest$$.c | sed '/^$/d'
rm -f conftest$$.c
;;
platform_irq_count)
#
# Determine if the platform_irq_count() function is present
#
# Added by commit 4b83555d5098 ("driver-core: platform: Add
# platform_irq_count()") in v4.5.
#
CODE="
#include <linux/platform_device.h>
int conftest_platform_irq_count(void) {
return platform_irq_count();
}"
compile_check_conftest "$CODE" "NV_PLATFORM_IRQ_COUNT_PRESENT" "" "functions"
;;
devm_clk_bulk_get_all)
#
# Determine if devm_clk_bulk_get_all() function is present
#
# Added by commit f08c2e2865f6 ("clk: add managed version of
# clk_bulk_get_all") in v4.20.
#
CODE="
#if defined(NV_LINUX_CLK_H_PRESENT)
#include <linux/clk.h>
#endif
void conftest_devm_clk_bulk_get_all(void)
{
devm_clk_bulk_get_all();
}
"
compile_check_conftest "$CODE" "NV_DEVM_CLK_BULK_GET_ALL_PRESENT" "" "functions"
;;
mmget_not_zero)
#
# Determine if mmget_not_zero() function is present
#
# mmget_not_zero() function was added by commit
# d2005e3f41d4f9299e2df6a967c8beb5086967a9 ("userfaultfd: don't pin
# the user memory in userfaultfd_file_create()") in v4.7
# (2016-05-20) in linux/sched.h but then moved to linux/sched/mm.h
# by commit 68e21be2916b359fd8afb536c1911dc014cfd03e
# ("sched/headers: Move task->mm handling methods to
# <linux/sched/mm.h>") in v4.11 (2017-02-01).
CODE="
#if defined(NV_LINUX_SCHED_MM_H_PRESENT)
#include <linux/sched/mm.h>
#elif defined(NV_LINUX_SCHED_H_PRESENT)
#include <linux/sched.h>
#endif
void conftest_mmget_not_zero(void) {
mmget_not_zero();
}"
compile_check_conftest "$CODE" "NV_MMGET_NOT_ZERO_PRESENT" "" "functions"
;;
mmgrab)
#
# Determine if mmgrab() function is present
#
# mmgrab() function was added by commit
# f1f1007644ffc8051a4c11427d58b1967ae7b75a ("mm: add new
# mmgrab() helper") in v4.11 (2017-02-01). See comment for
# mmget_not_zero for a description of how the headers have
# changed.
CODE="
#if defined(NV_LINUX_SCHED_MM_H_PRESENT)
#include <linux/sched/mm.h>
#elif defined(NV_LINUX_SCHED_H_PRESENT)
#include <linux/sched.h>
#endif
void conftest_mmgrab(void) {
mmgrab();
}"
compile_check_conftest "$CODE" "NV_MMGRAB_PRESENT" "" "functions"
;;
dma_resv_add_fence)
#
# Determine if the dma_resv_add_fence() function is present.
#
# dma_resv_add_excl_fence() and dma_resv_add_shared_fence() were
# removed and replaced with dma_resv_add_fence() by commit
# 73511edf8b19 ("dma-buf: specify usage while adding fences to
# dma_resv obj v7") in v5.19.
#
CODE="
#if defined(NV_LINUX_DMA_RESV_H_PRESENT)
#include <linux/dma-resv.h>
#endif
void conftest_dma_resv_add_fence(void) {
dma_resv_add_fence();
}"
compile_check_conftest "$CODE" "NV_DMA_RESV_ADD_FENCE_PRESENT" "" "functions"
;;
dma_resv_reserve_fences)
#
# Determine if the dma_resv_reserve_fences() function is present.
#
# dma_resv_reserve_shared() was removed and replaced with
# dma_resv_reserve_fences() by commit c8d4c18bfbc4
# ("dma-buf/drivers: make reserving a shared slot mandatory v4") in
# v5.19.
#
CODE="
#if defined(NV_LINUX_DMA_RESV_H_PRESENT)
#include <linux/dma-resv.h>
#endif
void conftest_dma_resv_reserve_fences(void) {
dma_resv_reserve_fences();
}"
compile_check_conftest "$CODE" "NV_DMA_RESV_RESERVE_FENCES_PRESENT" "" "functions"
;;
reservation_object_reserve_shared_has_num_fences_arg)
#
# Determine if reservation_object_reserve_shared() has 'num_fences'
# argument.
#
# reservation_object_reserve_shared() function prototype was updated
# to take 'num_fences' argument by commit ca05359f1e64 ("dma-buf:
# allow reserving more than one shared fence slot") in v5.0.
#
CODE="
#include <linux/reservation.h>
void conftest_reservation_object_reserve_shared_has_num_fences_arg(
struct reservation_object *obj,
unsigned int num_fences) {
(void) reservation_object_reserve_shared(obj, num_fences);
}"
compile_check_conftest "$CODE" "NV_RESERVATION_OBJECT_RESERVE_SHARED_HAS_NUM_FENCES_ARG" "" "types"
;;
get_task_ioprio)
#
# Determine if the __get_task_ioprio() function is present.
#
# Added by commit 893e5d32d583 ("block: Generalize
# get_current_ioprio() for any task") in v6.0.
#
CODE="
#include <linux/ioprio.h>
void conftest_get_task_ioprio(void) {
__get_task_ioprio();
}"
compile_check_conftest "$CODE" "NV_GET_TASK_IOPRIO_PRESENT" "" "functions"
;;
num_registered_fb)
#
# Determine if 'num_registered_fb' variable is present.
#
# Removed by commit 5727dcfd8486 ("fbdev: Make registered_fb[]
# private to fbmem.c") in v6.1.
#
CODE="
#include <linux/fb.h>
int conftest_num_registered_fb(void) {
return num_registered_fb;
}"
compile_check_conftest "$CODE" "NV_NUM_REGISTERED_FB_PRESENT" "" "types"
;;
acpi_video_register_backlight)
#
# Determine if acpi_video_register_backlight() function is present
#
# acpi_video_register_backlight was added by commit 3dbc80a3e4c55c
# (ACPI: video: Make backlight class device registration a separate
# step (v2)) for v6.0 (2022-09-02).
# Note: the include directive for <linux/types> in this conftest is
# necessary in order to support kernels between commit 0b9f7d93ca61
# ("ACPI / i915: ignore firmware requests backlight change") for
# v3.16 (2014-07-07) and commit 3bd6bce369f5 ("ACPI / video: Port
# to new backlight interface selection API") for v4.2 (2015-07-16).
# Kernels within this range use the 'bool' type and the related
# 'false' value in <acpi/video.h> without first including the
# definitions of that type and value.
#
CODE="
#include <linux/types.h>
#include <acpi/video.h>
void conftest_acpi_video_register_backlight(void) {
acpi_video_register_backlight(0);
}"
compile_check_conftest "$CODE" "NV_ACPI_VIDEO_REGISTER_BACKLIGHT" "" "functions"
;;
acpi_video_backlight_use_native)
#
# Determine if acpi_video_backlight_use_native() function is present
#
# acpi_video_backlight_use_native was added by commit 2600bfa3df99
# (ACPI: video: Add acpi_video_backlight_use_native() helper) for
# v6.0 (2022-08-17). Note: the include directive for <linux/types.h>
# in this conftest is necessary in order to support kernels between
# commit 0b9f7d93ca61 ("ACPI / i915: ignore firmware requests for
# backlight change") for v3.16 (2014-07-07) and commit 3bd6bce369f5
# ("ACPI / video: Port to new backlight interface selection API")
# for v4.2 (2015-07-16). Kernels within this range use the 'bool'
# type and the related 'false' value in <acpi/video.h> without first
# including the definitions of that type and value.
#
CODE="
#include <linux/types.h>
#include <acpi/video.h>
void conftest_acpi_video_backglight_use_native(void) {
acpi_video_backlight_use_native(0);
}"
compile_check_conftest "$CODE" "NV_ACPI_VIDEO_BACKLIGHT_USE_NATIVE" "" "functions"
;;
vm_fault_to_errno)
#
# Determine if the vm_fault_to_errno() function is present.
#
# vm_fault_to_errno() was added by commit 9a291a7c94281 (mm/hugetlb:
# report -EHWPOISON not -EFAULT when FOLL_HWPOISON is specified) in
# v4.12 (2017-06-02).
#
CODE="
#include <linux/mm_types.h>
void conftest_vm_fault_to_errno(void) {
vm_fault_to_errno();
}"
compile_check_conftest "$CODE" "NV_VM_FAULT_TO_ERRNO_PRESENT" "" "functions"
;;
handle_mm_fault_has_mm_arg)
#
# Determine if handle_mm_fault() has mm argument.
#
# mm argument was removed from handle_mm_fault() by commit
# dcddffd41d3f1d3bdcc1dce3f1cd142779b6d4c1 (07/26/2016) ("mm: do not
# pass mm_struct into handle_mm_fault") in v4.8.
#
# To test if handle_mm_fault() has mm argument, define a function
# with the expected signature and then define the corresponding
# function implementation with the expected signature. Successful
# compilation indicates that handle_mm_fault has the mm argument.
#
CODE="
#include <linux/mm.h>
#include <linux/mm_types.h>
typeof(handle_mm_fault) conftest_handle_mm_fault_has_mm_arg;
int conftest_handle_mm_fault_has_mm_arg(struct mm_struct *mm,
struct vm_area_struct *vma,
unsigned long address,
unsigned int flags) {
return 0;
}"
compile_check_conftest "$CODE" "NV_HANDLE_MM_FAULT_HAS_MM_ARG" "" "types"
;;
handle_mm_fault_has_pt_regs_arg)
#
# Determine if handle_mm_fault() has pt_regs argument.
#
# pt_regs argument was added to handle_mm_fault by commit
# bce617edecada007aee8610fbe2c14d10b8de2f6 (08/12/2020) ("mm: do
# page fault accounting in handle_mm_fault") in v5.9.
#
# To test if handle_mm_fault() has pt_regs argument, define a
# function with the expected signature and then define the
# corresponding function implementation with the expected signature.
# Successful compilation indicates that handle_mm_fault has the
# pt_regs argument.
#
CODE="
#include <linux/mm.h>
#include <linux/mm_types.h>
typeof(handle_mm_fault) conftest_handle_mm_fault_has_pt_regs_arg;
vm_fault_t conftest_handle_mm_fault_has_pt_regs_arg(struct vm_area_struct *vma,
unsigned long address,
unsigned int flags,
struct pt_regs *regs) {
return 0;
}"
compile_check_conftest "$CODE" "NV_HANDLE_MM_FAULT_HAS_PT_REGS_ARG" "" "types"
;;
pci_rebar_get_possible_sizes)
#
# Determine if the pci_rebar_get_possible_sizes() function is present.
#
# Added by commit 8fbdbb66f8c10 ("PCI: Add resizable BAR infrastructure
# ") in v5.12
#
CODE="
#include <linux/pci.h>
void conftest_pci_rebar_get_possible_sizes(void) {
pci_rebar_get_possible_sizes();
}"
compile_check_conftest "$CODE" "NV_PCI_REBAR_GET_POSSIBLE_SIZES_PRESENT" "" "functions"
;;
wait_for_random_bytes)
#
# Determine if the wait_for_random_bytes() function is present.
#
# Added by commit e297a783e4156 ("random: add wait_for_random_bytes
# API") in v4.13
#
CODE="
#include <linux/random.h>
int conftest_wait_for_random_bytes(void) {
return wait_for_random_bytes(0);
}"
compile_check_conftest "$CODE" "NV_WAIT_FOR_RANDOM_BYTES_PRESENT" "" "functions"
;;
drm_connector_has_override_edid)
#
# Determine if 'struct drm_connector' has an 'override_edid' member.
#
# Removed by commit 90b575f52c6a ("drm/edid: detach debugfs EDID
# override from EDID property update") in v6.2.
#
CODE="
#if defined(NV_DRM_DRM_CRTC_H_PRESENT)
#include <drm/drm_crtc.h>
#endif
#if defined(NV_DRM_DRM_CONNECTOR_H_PRESENT)
#include <drm/drm_connector.h>
#endif
int conftest_drm_connector_has_override_edid(void) {
return offsetof(struct drm_connector, override_edid);
}"
compile_check_conftest "$CODE" "NV_DRM_CONNECTOR_HAS_OVERRIDE_EDID" "" "types"
;;
iommu_sva_bind_device_has_drvdata_arg)
#
# Check if iommu_sva_bind_device() has drvdata parameter.
#
# drvdata argument was removed by commit
# 942fd5435dccb273f90176b046ae6bbba60cfbd8 ("iommu: Remove
# SVM_FLAG_SUPERVISOR_MODE support") in v6.2 (2022-10-31)
#
CODE="
#include <linux/iommu.h>
#include <linux/mm_types.h>
#include <linux/device.h>
void conftest_iommu_sva_bind_device_has_drvdata_arg(struct device *dev,
struct mm_struct *mm,
void *drvdata) {
(void) iommu_sva_bind_device(dev, mm, drvdata);
}"
compile_check_conftest "$CODE" "NV_IOMMU_SVA_BIND_DEVICE_HAS_DRVDATA_ARG" "" "types"
;;
vm_area_struct_has_const_vm_flags)
#
# Determine if the 'vm_area_struct' structure has
# const 'vm_flags'.
#
# A union of '__vm_flags' and 'const vm_flags' was added by
# commit bc292ab00f6c ("mm: introduce vma->vm_flags wrapper
# functions") in v6.3.
#
CODE="
#include <linux/mm_types.h>
int conftest_vm_area_struct_has_const_vm_flags(void) {
return offsetof(struct vm_area_struct, __vm_flags);
}"
compile_check_conftest "$CODE" "NV_VM_AREA_STRUCT_HAS_CONST_VM_FLAGS" "" "types"
;;
drm_driver_has_dumb_destroy)
#
# Determine if the 'drm_driver' structure has a 'dumb_destroy'
# function pointer.
#
# Removed by commit 96a7b60f6ddb ("drm: remove dumb_destroy
# callback") in v6.4.
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_DRV_H_PRESENT)
#include <drm/drm_drv.h>
#endif
int conftest_drm_driver_has_dumb_destroy(void) {
return offsetof(struct drm_driver, dumb_destroy);
}"
compile_check_conftest "$CODE" "NV_DRM_DRIVER_HAS_DUMB_DESTROY" "" "types"
;;
memory_failure_has_trapno_arg)
#
# Check if memory_failure() has trapno parameter.
#
# Removed by commit 83b57531c58f ("mm/memory_failure: Remove
# unused trapno from memory_failure") in v4.16.
#
CODE="
#include <linux/mm.h>
void conftest_memory_failure_has_trapno_arg(unsigned long pfn,
int trapno,
int flags) {
(void) memory_failure(pfn, trapno, flags);
}"
compile_check_conftest "$CODE" "NV_MEMORY_FAILURE_HAS_TRAPNO_ARG" "" "types"
;;
memory_failure_mf_sw_simulated_defined)
#
# Check if memory_failure() flag MF_SW_SIMULATED is defined.
#
# Added by commit 67f22ba7750f ("mm/memory-failure: disable
# unpoison once hw error happens") in v5.19.
#
CODE="
#include <linux/mm.h>
int conftest_memory_failure_mf_sw_simulated_defined(void) {
return MF_SW_SIMULATED;
}"
compile_check_conftest "$CODE" "NV_MEMORY_FAILURE_MF_SW_SIMULATED_DEFINED" "" "types"
;;
sync_file_get_fence)
#
# Determine if sync_file_get_fence() function is present
#
# Added by commit 972526a40932 ("dma-buf/sync_file: add
# sync_file_get_fence()") in v4.9.
#
CODE="
#if defined(NV_LINUX_SYNC_FILE_H_PRESENT)
#include <linux/sync_file.h>
#endif
void conftest_sync_file_get_fence(void)
{
sync_file_get_fence();
}"
compile_check_conftest "$CODE" "NV_SYNC_FILE_GET_FENCE_PRESENT" "" "functions"
;;
dma_fence_set_error)
#
# Determine if dma_fence_set_error() function is present
#
# Added by commit a009e975da5c ("dma-fence: Introduce
# drm_fence_set_error() helper") in v4.11.
#
CODE="
#if defined(NV_LINUX_DMA_FENCE_H_PRESENT)
#include <linux/dma-fence.h>
#endif
void conftest_dma_fence_set_error(void)
{
dma_fence_set_error();
}"
compile_check_conftest "$CODE" "NV_DMA_FENCE_SET_ERROR_PRESENT" "" "functions"
;;
fence_set_error)
#
# Determine if fence_set_error() function is present
#
# fence_set_error is a different name for dma_fence_set_error
# present in kernels where commit a009e975da5c ("dma-fence:
# Introduce drm_fence_set_error() helper") from v4.11 was
# backported, but commit f54d1867005c ("dma-buf: Rename struct fence
# to dma_fence") from v4.10 was not. In particular, Tegra v4.9
# kernels, such as commit f5e0724e76c2 ("dma-fence: Introduce
# drm_fence_set_error() helper") in NVIDIA Linux for Tegra (L4T) r31
# and r32 kernels in the L4T kernel repo
# git://nv-tegra.nvidia.com/linux-4.9.git, contain this function.
#
CODE="
#if defined(NV_LINUX_FENCE_H_PRESENT)
#include <linux/fence.h>
#endif
void conftest_fence_set_error(void)
{
fence_set_error();
}"
compile_check_conftest "$CODE" "NV_FENCE_SET_ERROR_PRESENT" "" "functions"
;;
fence_ops_use_64bit_seqno)
#
# Determine if dma_fence_ops has the use_64bit_seqno member
#
# 64-bit fence seqno support was actually added by commit
# b312d8ca3a7c ("dma-buf: make fence sequence numbers 64 bit v2")
# in v5.1, but the field to explicitly declare support for it
# didn't get added until commit 5e498abf1485 ("dma-buf:
# explicitely note that dma-fence-chains use 64bit seqno") in
# v5.2. Since it is currently trivial to work around the lack of
# native 64-bit seqno in our driver, we'll use the work-around path
# for kernels prior to v5.2 to avoid further ifdefing of the code.
#
CODE="
#if defined(NV_LINUX_DMA_FENCE_H_PRESENT)
#include <linux/dma-fence.h>
#endif
int conftest_fence_ops(void)
{
return offsetof(struct dma_fence_ops, use_64bit_seqno);
}"
compile_check_conftest "$CODE" "NV_DMA_FENCE_OPS_HAS_USE_64BIT_SEQNO" "" "types"
;;
drm_fbdev_generic_setup)
#
# Determine whether drm_fbdev_generic_setup is present.
#
# Added by commit 9060d7f49376 ("drm/fb-helper: Finish the
# generic fbdev emulation") in v4.19. Removed by commit
# aae4682e5d66 ("drm/fbdev-generic: Convert to fbdev-ttm")
# in v6.11.
#
CODE="
#include <drm/drm_fb_helper.h>
#if defined(NV_DRM_DRM_FBDEV_GENERIC_H_PRESENT)
#include <drm/drm_fbdev_generic.h>
#endif
void conftest_drm_fbdev_generic_setup(void) {
drm_fbdev_generic_setup();
}"
compile_check_conftest "$CODE" "NV_DRM_FBDEV_GENERIC_SETUP_PRESENT" "" "functions"
;;
drm_fbdev_ttm_setup)
#
# Determine whether drm_fbdev_ttm_setup is present.
#
# Added by commit aae4682e5d66 ("drm/fbdev-generic:
# Convert to fbdev-ttm") in v6.11. Removed by commit
# 1000634477d8 ("drm/fbdev-ttm:Convert to client-setup") in v6.13.
#
CODE="
#include <drm/drm_fb_helper.h>
#if defined(NV_DRM_DRM_FBDEV_TTM_H_PRESENT)
#include <drm/drm_fbdev_ttm.h>
#endif
void conftest_drm_fbdev_ttm_setup(void) {
drm_fbdev_ttm_setup();
}"
compile_check_conftest "$CODE" "NV_DRM_FBDEV_TTM_SETUP_PRESENT" "" "functions"
;;
drm_client_setup)
#
# Determine whether drm_client_setup is present.
#
# Added by commit d07fdf922592 ("drm/fbdev-ttm: Convert to
# client-setup") in v6.13 in drm/drm_client_setup.h, but then moved
# to drm/clients/drm_client_setup.h by commit b86711c6d6e2
# ("drm/client: Move public client header to clients/ subdirectory")
# in linux-next b86711c6d6e2.
#
CODE="
#include <drm/drm_fb_helper.h>
#if defined(NV_DRM_DRM_CLIENT_SETUP_H_PRESENT)
#include <drm/drm_client_setup.h>
#elif defined(NV_DRM_CLIENTS_DRM_CLIENT_SETUP_H_PRESENT)
#include <drm/clients/drm_client_setup.h>
#endif
void conftest_drm_client_setup(void) {
drm_client_setup();
}"
compile_check_conftest "$CODE" "NV_DRM_CLIENT_SETUP_PRESENT" "" "functions"
;;
drm_output_poll_changed)
#
# Determine whether drm_mode_config_funcs.output_poll_changed
# callback is present
#
# Removed by commit 446d0f4849b1 ("drm: Remove struct
# drm_mode_config_funcs.output_poll_changed") in v6.12. Hotplug
# event support is handled through the fbdev emulation interface
# going forward.
#
CODE="
#if defined(NV_DRM_DRM_MODE_CONFIG_H_PRESENT)
#include <drm/drm_mode_config.h>
#else
#include <drm/drm_crtc.h>
#endif
int conftest_drm_output_poll_changed_available(void) {
return offsetof(struct drm_mode_config_funcs, output_poll_changed);
}"
compile_check_conftest "$CODE" "NV_DRM_OUTPUT_POLL_CHANGED_PRESENT" "" "types"
;;
aperture_remove_conflicting_devices)
#
# Determine whether aperture_remove_conflicting_devices is present.
#
# Added by commit 7283f862bd991 ("drm: Implement DRM aperture
# helpers under video/") in v6.0
CODE="
#if defined(NV_LINUX_APERTURE_H_PRESENT)
#include <linux/aperture.h>
#endif
void conftest_aperture_remove_conflicting_devices(void) {
aperture_remove_conflicting_devices();
}"
compile_check_conftest "$CODE" "NV_APERTURE_REMOVE_CONFLICTING_DEVICES_PRESENT" "" "functions"
;;
aperture_remove_conflicting_pci_devices)
#
# Determine whether aperture_remove_conflicting_pci_devices is present.
#
# Added by commit 7283f862bd991 ("drm: Implement DRM aperture
# helpers under video/") in v6.0
CODE="
#if defined(NV_LINUX_APERTURE_H_PRESENT)
#include <linux/aperture.h>
#endif
void conftest_aperture_remove_conflicting_pci_devices(void) {
aperture_remove_conflicting_pci_devices();
}"
compile_check_conftest "$CODE" "NV_APERTURE_REMOVE_CONFLICTING_PCI_DEVICES_PRESENT" "" "functions"
;;
drm_aperture_remove_conflicting_pci_framebuffers)
#
# Determine whether drm_aperture_remove_conflicting_pci_framebuffers is present.
#
# Added by commit 2916059147ea ("drm/aperture: Add infrastructure
# for aperture ownership") in v5.14.
#
CODE="
#if defined(NV_DRM_DRM_APERTURE_H_PRESENT)
#include <drm/drm_aperture.h>
#endif
void conftest_drm_aperture_remove_conflicting_pci_framebuffers(void) {
drm_aperture_remove_conflicting_pci_framebuffers();
}"
compile_check_conftest "$CODE" "NV_DRM_APERTURE_REMOVE_CONFLICTING_PCI_FRAMEBUFFERS_PRESENT" "" "functions"
;;
drm_aperture_remove_conflicting_pci_framebuffers_has_driver_arg)
#
# Determine whether drm_aperture_remove_conflicting_pci_framebuffers
# takes a struct drm_driver * as its second argument.
#
# Prior to commit 97c9bfe3f6605d41eb8f1206e6e0f62b31ba15d6, the
# second argument was a char * pointer to the driver's name.
#
# To test if drm_aperture_remove_conflicting_pci_framebuffers() has
# a req_driver argument, define a function with the expected
# signature and then define the corresponding function
# implementation with the expected signature. Successful compilation
# indicates that this function has the expected signature.
#
# This change occurred in commit 97c9bfe3f660 ("drm/aperture: Pass
# DRM driver structure instead of driver name") in v5.15
# (2021-06-29).
#
CODE="
#if defined(NV_DRM_DRM_DRV_H_PRESENT)
#include <drm/drm_drv.h>
#endif
#if defined(NV_DRM_DRM_APERTURE_H_PRESENT)
#include <drm/drm_aperture.h>
#endif
typeof(drm_aperture_remove_conflicting_pci_framebuffers) conftest_drm_aperture_remove_conflicting_pci_framebuffers;
int conftest_drm_aperture_remove_conflicting_pci_framebuffers(struct pci_dev *pdev,
const struct drm_driver *req_driver)
{
return 0;
}"
compile_check_conftest "$CODE" "NV_DRM_APERTURE_REMOVE_CONFLICTING_PCI_FRAMEBUFFERS_HAS_DRIVER_ARG" "" "types"
;;
find_next_bit_wrap)
# Determine if 'find_next_bit_wrap' is defined.
#
# The function was added by commit 6cc18331a987 ("lib/find_bit:
# add find_next{,_and}_bit_wrap") in v6.1-rc1 (2022-09-19).
#
# Ideally, we would want to be able to include linux/find.h.
# However, linux/find.h does not allow direct inclusion. Rather
# it has to be included through linux/bitmap.h.
#
CODE="
#include <linux/bitmap.h>
void conftest_find_next_bit_wrap(void) {
(void)find_next_bit_wrap();
}"
compile_check_conftest "$CODE" "NV_FIND_NEXT_BIT_WRAP_PRESENT" "" "functions"
;;
crypto_tfm_ctx_aligned)
# Determine if 'crypto_tfm_ctx_aligned' is defined.
#
# Removed by commit 25c74a39e0f6 ("crypto: hmac - remove unnecessary
# alignment logic") in v6.7.
#
CODE="
#include <crypto/algapi.h>
void conftest_crypto_tfm_ctx_aligned(void) {
(void)crypto_tfm_ctx_aligned();
}"
compile_check_conftest "$CODE" "NV_CRYPTO_TFM_CTX_ALIGNED_PRESENT" "" "functions"
;;
crypto)
#
# Determine if we support various crypto functions.
# This test is not complete and may return false positive.
#
CODE="
#include <crypto/akcipher.h>
#include <crypto/algapi.h>
#include <crypto/ecc_curve.h>
#include <crypto/ecdh.h>
#include <crypto/hash.h>
#include <crypto/internal/ecc.h>
#include <crypto/kpp.h>
#include <crypto/public_key.h>
#include <crypto/sm3.h>
#include <keys/asymmetric-type.h>
#include <linux/crypto.h>
void conftest_crypto(void) {
struct shash_desc sd;
struct crypto_shash cs;
(void)crypto_shash_tfm_digest;
}"
compile_check_conftest "$CODE" "NV_CRYPTO_PRESENT" "" "symbols"
;;
crypto_akcipher_verify)
#
# Determine whether the crypto_akcipher_verify API is still present.
# It was removed by commit 6b34562 ('crypto: akcipher - Drop sign/verify operations')
# in v6.13-rc1 (2024-10-04).
#
# This test is dependent on the crypto conftest to determine whether crypto should be
# enabled at all. That means that if the kernel is old enough such that crypto_akcipher_verify
#
# The test merely checks for the presence of the API, as it assumes that if the API
# is no longer present, the new API to replace it (crypto_sig_verify) must be present.
# If the kernel version is too old to have crypto_akcipher_verify, it will fail the crypto
# conftest above and all crypto code will be compiled out.
#
CODE="
#include <crypto/akcipher.h>
#include <linux/crypto.h>
void conftest_crypto_akcipher_verify(void) {
(void)crypto_akcipher_verify;
}"
compile_check_conftest "$CODE" "NV_CRYPTO_AKCIPHER_VERIFY_PRESENT" "" "symbols"
;;
ecc_digits_from_bytes)
#
# Determine whether ecc_digits_from_bytes is present.
# It was added in commit c6ab5c915da4 ('crypto: ecc - Prevent ecc_digits_from_bytes from
# reading too many bytes') in v6.10.
#
# This functionality is needed when crypto_akcipher_verify is not present.
#
CODE="
#include <crypto/internal/ecc.h>
void conftest_ecc_digits_from_bytes(void) {
(void)ecc_digits_from_bytes;
}"
compile_check_conftest "$CODE" "NV_ECC_DIGITS_FROM_BYTES_PRESENT" "" "symbols"
;;
mempolicy_has_unified_nodes)
#
# Determine if the 'mempolicy' structure has
# nodes union.
#
# nodes field was added by commit 269fbe72cd ("mm/mempolicy:
# use unified 'nodes' for bind/interleave/prefer policies") in
# v5.14 (2021-06-30).
#
CODE="
#include <linux/mempolicy.h>
int conftest_mempolicy_has_unified_nodes(void) {
return offsetof(struct mempolicy, nodes);
}"
compile_check_conftest "$CODE" "NV_MEMPOLICY_HAS_UNIFIED_NODES" "" "types"
;;
mempolicy_has_home_node)
#
# Determine if the 'mempolicy' structure has
# home_node field.
#
# home_node field was added by commit c6018b4b254
# ("mm/mempolicy: add set_mempolicy_home_node syscall") in v5.17
# (2022-01-14).
#
CODE="
#include <linux/mempolicy.h>
int conftest_mempolicy_has_home_node(void) {
return offsetof(struct mempolicy, home_node);
}"
compile_check_conftest "$CODE" "NV_MEMPOLICY_HAS_HOME_NODE" "" "types"
;;
mpol_preferred_many_present)
#
# Determine if MPOL_PREFERRED_MANY enum is present or not
#
# Added by commit b27abaccf8e8b ("mm/mempolicy: add
# MPOL_PREFERRED_MANY for multiple preferred nodes") in
# v5.15
#
CODE="
#include <linux/mempolicy.h>
int mpol_preferred_many = MPOL_PREFERRED_MANY;
"
compile_check_conftest "$CODE" "NV_MPOL_PREFERRED_MANY_PRESENT" "" "types"
;;
drm_connector_attach_hdr_output_metadata_property)
#
# Determine if the function
# drm_connector_attach_hdr_output_metadata_property() is present.
#
# Added by commit e057b52c1d90 ("drm/connector: Create a helper to
# attach the hdr_output_metadata property") in v5.14.
#
CODE="
#if defined(NV_DRM_DRM_CRTC_H_PRESENT)
#include <drm/drm_crtc.h>
#endif
#if defined(NV_DRM_DRM_CONNECTOR_H_PRESENT)
#include <drm/drm_connector.h>
#endif
void conftest_drm_connector_attach_hdr_output_metadata_property(void) {
drm_connector_attach_hdr_output_metadata_property();
}"
compile_check_conftest "$CODE" "NV_DRM_CONNECTOR_ATTACH_HDR_OUTPUT_METADATA_PROPERTY_PRESENT" "" "functions"
;;
mmu_interval_notifier)
#
# Determine if mmu_interval_notifier struct is present or not
#
# Added by commit 99cb252f5 ("mm/mmu_notifier: add an interval tree
# notifier") in v5.10 (2019-11-12).
#
CODE="
#include <linux/mmu_notifier.h>
struct mmu_interval_notifier interval_notifier;
"
compile_check_conftest "$CODE" "NV_MMU_INTERVAL_NOTIFIER" "" "types"
;;
drm_mode_create_dp_colorspace_property_has_supported_colorspaces_arg)
# Determine if drm_mode_create_dp_colorspace_property() takes the
# 'supported_colorspaces' argument.
#
# The 'u32 supported_colorspaces' argument was added to
# drm_mode_create_dp_colorspace_property() by commit
# c265f340eaa8 ("drm/connector: Allow drivers to pass list of
# supported colorspaces") in v6.5.
#
# To test if drm_mode_create_dp_colorspace_property() has the
# 'supported_colorspaces' argument, declare a function prototype
# with typeof drm_mode_create_dp_colorspace_property and then
# define the corresponding function implementation with the
# expected signature. Successful compilation indicates that
# drm_mode_create_dp_colorspace_property() has the
# 'supported_colorspaces' argument.
#
CODE="
#if defined(NV_DRM_DRM_CRTC_H_PRESENT)
#include <drm/drm_crtc.h>
#endif
#if defined(NV_DRM_DRM_CONNECTOR_H_PRESENT)
#include <drm/drm_connector.h>
#endif
typeof(drm_mode_create_dp_colorspace_property) conftest_drm_mode_create_dp_colorspace_property_has_supported_colorspaces_arg;
int conftest_drm_mode_create_dp_colorspace_property_has_supported_colorspaces_arg(struct drm_connector *connector,
u32 supported_colorspaces)
{
return 0;
}"
compile_check_conftest "$CODE" "NV_DRM_MODE_CREATE_DP_COLORSPACE_PROPERTY_HAS_SUPPORTED_COLORSPACES_ARG" "" "types"
;;
drm_unlocked_ioctl_flag_present)
# Determine if DRM_UNLOCKED IOCTL flag is present.
#
# DRM_UNLOCKED was removed by commit 2798ffcc1d6a ("drm: Remove
# locking for legacy ioctls and DRM_UNLOCKED") in Linux
# next-20231208.
#
# DRM_UNLOCKED definition was moved from drmP.h to drm_ioctl.h by
# commit 2640981f3600 ("drm: document drm_ioctl.[hc]") in v4.12.
CODE="
#if defined(NV_DRM_DRM_IOCTL_H_PRESENT)
#include <drm/drm_ioctl.h>
#endif
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
int flags = DRM_UNLOCKED;"
compile_check_conftest "$CODE" "NV_DRM_UNLOCKED_IOCTL_FLAG_PRESENT" "" "types"
;;
page_pgmap)
#
# Determine if the page_pgmap() function is present.
#
# Added by commit 82ba975e4c43 ("mm: allow compound zone device
# pages") in v6.14
#
CODE="
#include <linux/mmzone.h>
int conftest_page_pgmap(void) {
return page_pgmap();
}"
compile_check_conftest "$CODE" "NV_PAGE_PGMAP_PRESENT" "" "functions"
;;
folio_test_swapcache)
#
# Determine if the folio_test_swapcache() function is present.
#
# folio_test_swapcache() was exported by commit d389a4a811551 ("mm:
# Add folio flag manipulation functions") in v5.16.
#
CODE="
#include <linux/page-flags.h>
void conftest_folio_test_swapcache(void) {
folio_test_swapcache();
}"
compile_check_conftest "$CODE" "NV_FOLIO_TEST_SWAPCACHE_PRESENT" "" "functions"
;;
drm_driver_has_date)
#
# Determine if the 'drm_driver' structure has a 'date' field.
#
# Removed by commit cb2e1c2136f7 ("drm: remove driver date from
# struct drm_driver and all drivers") in linux-next, expected in
# v6.14.
#
CODE="
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_DRV_H_PRESENT)
#include <drm/drm_drv.h>
#endif
int conftest_drm_driver_has_date(void) {
return offsetof(struct drm_driver, date);
}"
compile_check_conftest "$CODE" "NV_DRM_DRIVER_HAS_DATE" "" "types"
;;
drm_connector_helper_funcs_mode_valid_has_const_mode_arg)
#
# Determine if the 'mode' pointer argument is const in
# drm_connector_helper_funcs::mode_valid.
#
# The 'mode' pointer argument in
# drm_connector_helper_funcs::mode_valid was made const by commit
# 26d6fd81916e ("drm/connector: make mode_valid take a const struct
# drm_display_mode") in linux-next, expected in v6.15.
#
CODE="
#if defined(NV_DRM_DRM_ATOMIC_HELPER_H_PRESENT)
#include <drm/drm_atomic_helper.h>
#endif
static int conftest_drm_connector_mode_valid(struct drm_connector *connector,
const struct drm_display_mode *mode) {
return 0;
}
const struct drm_connector_helper_funcs conftest_drm_connector_helper_funcs = {
.mode_valid = conftest_drm_connector_mode_valid,
};"
compile_check_conftest "$CODE" "NV_DRM_CONNECTOR_HELPER_FUNCS_MODE_VALID_HAS_CONST_MODE_ARG" "" "types"
;;
# When adding a new conftest entry, please use the correct format for
# specifying the relevant upstream Linux kernel commit. Please
# avoid specifying -rc kernels, and only use SHAs that actually exist
# in the upstream Linux kernel git repository.
#
# Added|Removed|etc by commit <short-sha> ("<commit message") in
# <kernel-version>.
*)
# Unknown test name given
echo "Error: unknown conftest '$1' requested" >&2
exit 1
;;
esac
}
case "$5" in
cc_sanity_check)
#
# Check if the selected compiler can create object files
# in the current environment.
#
VERBOSE=$6
echo "int cc_sanity_check(void) {
return 0;
}" > conftest$$.c
$CC -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ ! -f conftest$$.o ]; then
if [ "$VERBOSE" = "full_output" ]; then
echo "";
fi
if [ "$CC" != "cc" ]; then
echo "The C compiler '$CC' does not appear to be able to"
echo "create object files. Please make sure you have "
echo "your Linux distribution's libc development package"
echo "installed and that '$CC' is a valid C compiler";
echo "name."
else
echo "The C compiler '$CC' does not appear to be able to"
echo "create executables. Please make sure you have "
echo "your Linux distribution's gcc and libc development"
echo "packages installed."
fi
if [ "$VERBOSE" = "full_output" ]; then
echo "";
echo "*** Failed CC sanity check. Bailing out! ***";
echo "";
fi
exit 1
else
rm -f conftest$$.o
exit 0
fi
;;
cc_version_check)
#
# Verify that the same compiler major and minor version is
# used for the kernel and kernel module. A mismatch condition is
# not considered fatal, so this conftest returns a success status
# code, even if it fails. Failure of the test can be distinguished
# by testing for empty (success) versus non-empty (failure) output.
#
# Some gcc version strings that have proven problematic for parsing
# in the past:
#
# gcc.real (GCC) 3.3 (Debian)
# gcc-Version 3.3 (Debian)
# gcc (GCC) 3.1.1 20020606 (Debian prerelease)
# version gcc 3.2.3
#
# As of this writing, GCC uses a version number as x.y.z and below
# are the typical version strings seen with various distributions.
# gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-23)
# gcc version 4.8.5 20150623 (Red Hat 4.8.5-39) (GCC)
# gcc (GCC) 8.3.1 20190507 (Red Hat 8.3.1-4)
# gcc (GCC) 10.2.1 20200723 (Red Hat 10.2.1-1)
# gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0
# gcc (Ubuntu 7.5.0-3ubuntu1~16.04) 7.5.0
# gcc (Debian 8.3.0-6) 8.3.0
# aarch64-linux-gcc.br_real (Buildroot 2020.08-14-ge5a2a90) 9.3.0, GNU ld (GNU Binutils) 2.33.1
#
# In order to extract GCC version correctly for version strings
# like the last one above, we first check for x.y.z and if that
# fails, we fallback to x.y format.
VERBOSE=$6
kernel_compile_h=$OUTPUT/include/generated/compile.h
if [ ! -f ${kernel_compile_h} ]; then
# The kernel's compile.h file is not present, so there
# isn't a convenient way to identify the compiler version
# used to build the kernel.
IGNORE_CC_MISMATCH=1
fi
if [ -n "$IGNORE_CC_MISMATCH" ]; then
exit 0
fi
kernel_cc_string=`cat ${kernel_compile_h} | \
grep LINUX_COMPILER | cut -f 2 -d '"'`
kernel_cc_version=`echo ${kernel_cc_string} | grep -o '[0-9]\+\.[0-9]\+\.[0-9]\+' | head -n 1`
if [ -z "${kernel_cc_version}" ]; then
kernel_cc_version=`echo ${kernel_cc_string} | grep -o '[0-9]\+\.[0-9]\+' | head -n 1`
fi
kernel_cc_major=`echo ${kernel_cc_version} | cut -d '.' -f 1`
kernel_cc_minor=`echo ${kernel_cc_version} | cut -d '.' -f 2`
echo "
#if (__GNUC__ != ${kernel_cc_major}) || ((__GNUC__ < 5) && (__GNUC_MINOR__ != ${kernel_cc_minor}))
#error \"cc version mismatch\"
#endif
" > conftest$$.c
$CC $CFLAGS -c conftest$$.c > /dev/null 2>&1
rm -f conftest$$.c
if [ -f conftest$$.o ]; then
rm -f conftest$$.o
exit 0;
else
#
# The gcc version check failed
#
if [ "$VERBOSE" = "full_output" ]; then
echo "";
echo "Warning: Compiler version check failed:";
echo "";
echo "The major and minor number of the compiler used to";
echo "compile the kernel:";
echo "";
echo "${kernel_cc_string}";
echo "";
echo "does not match the compiler used here:";
echo "";
$CC --version
echo "";
echo "It is recommended to set the CC environment variable";
echo "to the compiler that was used to compile the kernel.";
echo ""
echo "To skip the test and silence this warning message, set";
echo "the IGNORE_CC_MISMATCH environment variable to \"1\".";
echo "However, mixing compiler versions between the kernel";
echo "and kernel modules can result in subtle bugs that are";
echo "difficult to diagnose.";
echo "";
echo "*** Failed CC version check. ***";
echo "";
elif [ "$VERBOSE" = "just_msg" ]; then
echo "Warning: The kernel was built with ${kernel_cc_string}, but the" \
"current compiler version is `$CC --version | head -n 1`.";
fi
exit 0;
fi
;;
xen_sanity_check)
#
# Check if the target kernel is a Xen kernel. If so, exit, since
# the RM doesn't currently support Xen.
#
VERBOSE=$6
if [ -n "$IGNORE_XEN_PRESENCE" -o -n "$VGX_BUILD" ]; then
exit 0
fi
test_xen
if [ "$XEN_PRESENT" != "0" ]; then
echo "The kernel you are installing for is a Xen kernel!";
echo "";
echo "The NVIDIA driver does not currently support Xen kernels. If ";
echo "you are using a stock distribution kernel, please install ";
echo "a variant of this kernel without Xen support; if this is a ";
echo "custom kernel, please install a standard Linux kernel. Then ";
echo "try installing the NVIDIA kernel module again.";
echo "";
if [ "$VERBOSE" = "full_output" ]; then
echo "*** Failed Xen sanity check. Bailing out! ***";
echo "";
fi
exit 1
else
exit 0
fi
;;
preempt_rt_sanity_check)
#
# Check if the target kernel has the PREEMPT_RT patch set applied. If
# so, exit, since the RM doesn't support this configuration.
#
VERBOSE=$6
if [ -n "$IGNORE_PREEMPT_RT_PRESENCE" ]; then
exit 0
fi
if test_configuration_option CONFIG_PREEMPT_RT; then
PREEMPT_RT_PRESENT=1
elif test_configuration_option CONFIG_PREEMPT_RT_FULL; then
PREEMPT_RT_PRESENT=1
fi
if [ "$PREEMPT_RT_PRESENT" != "0" ]; then
echo "The kernel you are installing for is a PREEMPT_RT kernel!";
echo "";
echo "The NVIDIA driver does not support real-time kernels. If you ";
echo "are using a stock distribution kernel, please install ";
echo "a variant of this kernel that does not have the PREEMPT_RT ";
echo "patch set applied; if this is a custom kernel, please ";
echo "install a standard Linux kernel. Then try installing the ";
echo "NVIDIA kernel module again.";
echo "";
if [ "$VERBOSE" = "full_output" ]; then
echo "*** Failed PREEMPT_RT sanity check. Bailing out! ***";
echo "";
fi
exit 1
else
exit 0
fi
;;
patch_check)
#
# Check for any "official" patches that may have been applied and
# construct a description table for reporting purposes.
#
PATCHES=""
for PATCH in patch-*.h; do
if [ -f $PATCH ]; then
echo "#include \"$PATCH\""
PATCHES="$PATCHES "`echo $PATCH | sed -s 's/patch-\(.*\)\.h/\1/'`
fi
done
echo "static struct {
const char *short_description;
const char *description;
} __nv_patches[] = {"
for i in $PATCHES; do
echo "{ \"$i\", NV_PATCH_${i}_DESCRIPTION },"
done
echo "{ NULL, NULL } };"
exit 0
;;
compile_tests)
#
# Run a series of compile tests to determine the set of interfaces
# and features available in the target kernel.
#
shift 5
CFLAGS=$1
shift
for i in $*; do compile_test $i; done
exit 0
;;
dom0_sanity_check)
#
# Determine whether running in DOM0.
#
VERBOSE=$6
if [ -n "$VGX_BUILD" ]; then
if [ -f /proc/xen/capabilities ]; then
if [ "`cat /proc/xen/capabilities`" = "control_d" ]; then
exit 0
fi
else
echo "The kernel is not running in DOM0.";
echo "";
if [ "$VERBOSE" = "full_output" ]; then
echo "*** Failed DOM0 sanity check. Bailing out! ***";
echo "";
fi
fi
exit 1
fi
;;
vgpu_kvm_sanity_check)
#
# Determine whether we are running a vGPU on KVM host.
#
VERBOSE=$6
iommu=CONFIG_VFIO_IOMMU_TYPE1
iommufd_vfio_container=CONFIG_IOMMUFD_VFIO_CONTAINER
mdev=CONFIG_VFIO_MDEV
kvm=CONFIG_KVM_VFIO
vfio_pci_core=CONFIG_VFIO_PCI_CORE
VFIO_IOMMU_PRESENT=0
VFIO_IOMMUFD_VFIO_CONTAINER_PRESENT=0
VFIO_MDEV_PRESENT=0
KVM_PRESENT=0
VFIO_PCI_CORE_PRESENT=0
if [ -n "$VGX_KVM_BUILD" ]; then
if (test_configuration_option ${iommu} || test_configuration_option ${iommu}_MODULE); then
VFIO_IOMMU_PRESENT=1
fi
if (test_configuration_option ${iommufd_vfio_container} || test_configuration_option ${iommufd_vfio_container}_MODULE); then
VFIO_IOMMUFD_VFIO_CONTAINER_PRESENT=1
fi
if (test_configuration_option ${mdev} || test_configuration_option ${mdev}_MODULE); then
VFIO_MDEV_PRESENT=1
fi
if (test_configuration_option ${kvm} || test_configuration_option ${kvm}_MODULE); then
KVM_PRESENT=1
fi
if (test_configuration_option ${vfio_pci_core} || test_configuration_option ${vfio_pci_core}_MODULE); then
VFIO_PCI_CORE_PRESENT=1
fi
if ([ "$VFIO_IOMMU_PRESENT" != "0" ] || [ "$VFIO_IOMMUFD_VFIO_CONTAINER_PRESENT" != "0" ])&& [ "$KVM_PRESENT" != "0" ] ; then
# vGPU requires either MDEV or vfio-pci-core framework to be present.
if [ "$VFIO_MDEV_PRESENT" != "0" ] || [ "$VFIO_PCI_CORE_PRESENT" != "0" ]; then
exit 0
fi
fi
echo "Below CONFIG options are missing on the kernel for installing";
echo "NVIDIA vGPU driver on KVM host";
if [ "$VFIO_IOMMU_PRESENT" = "0" ] && [ "$VFIO_IOMMUFD_VFIO_CONTAINER_PRESENT" = "0" ]; then
echo "either CONFIG_VFIO_IOMMU_TYPE1 or CONFIG_IOMMUFD_VFIO_CONTAINER";
fi
if [ "$VFIO_MDEV_PRESENT" = "0" ] && [ "$VFIO_PCI_CORE_PRESENT" = "0" ]; then
echo "either CONFIG_VFIO_MDEV or CONFIG_VFIO_PCI_CORE";
fi
if [ "$KVM_PRESENT" = "0" ]; then
echo "CONFIG_KVM";
fi
echo "Please install the kernel with above CONFIG options set, then";
echo "try installing again";
echo "";
if [ "$VERBOSE" = "full_output" ]; then
echo "*** Failed vGPU on KVM sanity check. Bailing out! ***";
echo "";
fi
exit 1
else
exit 0
fi
;;
test_configuration_option)
#
# Check to see if the given config option is set.
#
OPTION=$6
test_configuration_option $OPTION
exit $?
;;
get_configuration_option)
#
# Get the value of the given config option.
#
OPTION=$6
get_configuration_option $OPTION
exit $?
;;
guess_module_signing_hash)
#
# Determine the best cryptographic hash to use for module signing,
# to the extent that is possible.
#
HASH=$(get_configuration_option CONFIG_MODULE_SIG_HASH)
if [ $? -eq 0 ] && [ -n "$HASH" ]; then
echo $HASH
exit 0
else
for SHA in 512 384 256 224 1; do
if test_configuration_option CONFIG_MODULE_SIG_SHA$SHA; then
echo sha$SHA
exit 0
fi
done
fi
exit 1
;;
test_kernel_header)
#
# Check for the availability of the given kernel header
#
CFLAGS=$6
test_header_presence "${7}"
exit $?
;;
build_cflags)
#
# Generate CFLAGS for use in the compile tests
#
build_cflags
echo $CFLAGS
exit 0
;;
module_symvers_sanity_check)
#
# Check whether Module.symvers exists and contains at least one
# EXPORT_SYMBOL* symbol from vmlinux
#
if [ -n "$IGNORE_MISSING_MODULE_SYMVERS" ]; then
exit 0
fi
TAB=' '
if [ -f "$OUTPUT/Module.symvers" ] && \
grep -e "^[^${TAB}]*${TAB}[^${TAB}]*${TAB}\+vmlinux" \
"$OUTPUT/Module.symvers" >/dev/null 2>&1; then
exit 0
fi
echo "The Module.symvers file is missing, or does not contain any"
echo "symbols exported from the kernel. This could cause the NVIDIA"
echo "kernel modules to be built against a configuration that does"
echo "not accurately reflect the actual target kernel."
echo "The Module.symvers file check can be disabled by setting the"
echo "environment variable IGNORE_MISSING_MODULE_SYMVERS to 1."
exit 1
;;
esac
-------------- next part --------------
/*
* Copyright (c) 2015-2022, NVIDIA CORPORATION. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "nvidia-drm-conftest.h" /* NV_DRM_AVAILABLE and NV_DRM_DRM_GEM_H_PRESENT */
#include "nvidia-drm-priv.h"
#include "nvidia-drm-drv.h"
#include "nvidia-drm-fb.h"
#include "nvidia-drm-modeset.h"
#include "nvidia-drm-encoder.h"
#include "nvidia-drm-connector.h"
#include "nvidia-drm-gem.h"
#include "nvidia-drm-crtc.h"
#include "nvidia-drm-fence.h"
#include "nvidia-drm-helper.h"
#include "nvidia-drm-gem-nvkms-memory.h"
#include "nvidia-drm-gem-user-memory.h"
#include "nvidia-drm-gem-dma-buf.h"
#if defined(NV_DRM_AVAILABLE)
#include "nvidia-drm-ioctl.h"
#if defined(NV_DRM_DRMP_H_PRESENT)
#include <drm/drmP.h>
#endif
#if defined(NV_DRM_DRM_ATOMIC_UAPI_H_PRESENT)
#include <drm/drm_atomic_uapi.h>
#endif
#if defined(NV_DRM_DRM_VBLANK_H_PRESENT)
#include <drm/drm_vblank.h>
#endif
#if defined(NV_DRM_DRM_FILE_H_PRESENT)
#include <drm/drm_file.h>
#endif
#if defined(NV_DRM_DRM_PRIME_H_PRESENT)
#include <drm/drm_prime.h>
#endif
#if defined(NV_DRM_DRM_IOCTL_H_PRESENT)
#include <drm/drm_ioctl.h>
#endif
#if defined(NV_LINUX_APERTURE_H_PRESENT)
#include <linux/aperture.h>
#endif
#if defined(NV_DRM_DRM_APERTURE_H_PRESENT)
#include <drm/drm_aperture.h>
#endif
#if defined(NV_DRM_FBDEV_AVAILABLE)
#include <drm/drm_fb_helper.h>
#endif
#if defined(NV_DRM_DRM_CLIENT_SETUP_H_PRESENT)
#include <drm/drm_client_setup.h>
#endif
#if defined(NV_DRM_DRM_FBDEV_TTM_H_PRESENT)
#include <drm/drm_fbdev_ttm.h>
#elif defined(NV_DRM_DRM_FBDEV_GENERIC_H_PRESENT)
#include <drm/drm_fbdev_generic.h>
#endif
#include <linux/pci.h>
#include <linux/workqueue.h>
/*
* Commit fcd70cd36b9b ("drm: Split out drm_probe_helper.h")
* moves a number of helper function definitions from
* drm/drm_crtc_helper.h to a new drm_probe_helper.h.
*/
#if defined(NV_DRM_DRM_PROBE_HELPER_H_PRESENT)
#include <drm/drm_probe_helper.h>
#endif
#include <drm/drm_crtc_helper.h>
#if defined(NV_DRM_DRM_GEM_H_PRESENT)
#include <drm/drm_gem.h>
#endif
#if defined(NV_DRM_DRM_AUTH_H_PRESENT)
#include <drm/drm_auth.h>
#endif
#if defined(NV_DRM_ATOMIC_MODESET_AVAILABLE)
#include <drm/drm_atomic_helper.h>
#endif
static int nv_drm_revoke_modeset_permission(struct drm_device *dev,
struct drm_file *filep,
NvU32 dpyId);
static int nv_drm_revoke_sub_ownership(struct drm_device *dev);
static struct nv_drm_device *dev_list = NULL;
static const char* nv_get_input_colorspace_name(
enum NvKmsInputColorSpace colorSpace)
{
switch (colorSpace) {
case NVKMS_INPUT_COLORSPACE_NONE:
return "None";
case NVKMS_INPUT_COLORSPACE_SCRGB_LINEAR:
return "IEC 61966-2-2 linear FP";
case NVKMS_INPUT_COLORSPACE_BT2100_PQ:
return "ITU-R BT.2100-PQ YCbCr";
default:
/* We shoudn't hit this */
WARN_ON("Unsupported input colorspace");
return "None";
}
};
#if defined(NV_DRM_ATOMIC_MODESET_AVAILABLE)
#if defined(NV_DRM_OUTPUT_POLL_CHANGED_PRESENT)
static void nv_drm_output_poll_changed(struct drm_device *dev)
{
struct drm_connector *connector = NULL;
struct drm_mode_config *config = &dev->mode_config;
#if defined(NV_DRM_CONNECTOR_LIST_ITER_PRESENT)
struct drm_connector_list_iter conn_iter;
nv_drm_connector_list_iter_begin(dev, &conn_iter);
#endif
/*
* Here drm_mode_config::mutex has been acquired unconditionally:
*
* - In the non-NV_DRM_CONNECTOR_LIST_ITER_PRESENT case, the mutex must
* be held for the duration of walking over the connectors.
*
* - In the NV_DRM_CONNECTOR_LIST_ITER_PRESENT case, the mutex must be
* held for the duration of a fill_modes() call chain:
* connector->funcs->fill_modes()
* |-> drm_helper_probe_single_connector_modes()
*
* It is easiest to always acquire the mutext for the entire connector
* loop.
*/
mutex_lock(&config->mutex);
nv_drm_for_each_connector(connector, &conn_iter, dev) {
struct nv_drm_connector *nv_connector = to_nv_connector(connector);
if (!nv_drm_connector_check_connection_status_dirty_and_clear(
nv_connector)) {
continue;
}
connector->funcs->fill_modes(
connector,
dev->mode_config.max_width, dev->mode_config.max_height);
}
mutex_unlock(&config->mutex);
#if defined(NV_DRM_CONNECTOR_LIST_ITER_PRESENT)
nv_drm_connector_list_iter_end(&conn_iter);
#endif
}
#endif /* NV_DRM_OUTPUT_POLL_CHANGED_PRESENT */
static struct drm_framebuffer *nv_drm_framebuffer_create(
struct drm_device *dev,
struct drm_file *file,
#if defined(NV_DRM_HELPER_MODE_FILL_FB_STRUCT_HAS_CONST_MODE_CMD_ARG)
const struct drm_mode_fb_cmd2 *cmd
#else
struct drm_mode_fb_cmd2 *cmd
#endif
)
{
struct drm_mode_fb_cmd2 local_cmd;
struct drm_framebuffer *fb;
local_cmd = *cmd;
fb = nv_drm_internal_framebuffer_create(
dev,
file,
&local_cmd);
#if !defined(NV_DRM_HELPER_MODE_FILL_FB_STRUCT_HAS_CONST_MODE_CMD_ARG)
*cmd = local_cmd;
#endif
return fb;
}
static const struct drm_mode_config_funcs nv_mode_config_funcs = {
.fb_create = nv_drm_framebuffer_create,
.atomic_state_alloc = nv_drm_atomic_state_alloc,
.atomic_state_clear = nv_drm_atomic_state_clear,
.atomic_state_free = nv_drm_atomic_state_free,
.atomic_check = nv_drm_atomic_check,
.atomic_commit = nv_drm_atomic_commit,
#if defined(NV_DRM_OUTPUT_POLL_CHANGED_PRESENT)
.output_poll_changed = nv_drm_output_poll_changed,
#endif
};
static void nv_drm_event_callback(const struct NvKmsKapiEvent *event)
{
struct nv_drm_device *nv_dev = event->privateData;
mutex_lock(&nv_dev->lock);
if (!atomic_read(&nv_dev->enable_event_handling)) {
goto done;
}
switch (event->type) {
case NVKMS_EVENT_TYPE_DPY_CHANGED:
nv_drm_handle_display_change(
nv_dev,
event->u.displayChanged.display);
break;
case NVKMS_EVENT_TYPE_DYNAMIC_DPY_CONNECTED:
nv_drm_handle_dynamic_display_connected(
nv_dev,
event->u.dynamicDisplayConnected.display);
break;
case NVKMS_EVENT_TYPE_FLIP_OCCURRED:
nv_drm_handle_flip_occurred(
nv_dev,
event->u.flipOccurred.head,
event->u.flipOccurred.layer);
break;
default:
break;
}
done:
mutex_unlock(&nv_dev->lock);
}
/*
* Helper function to initialize drm_device::mode_config from
* NvKmsKapiDevice's resource information.
*/
static void
nv_drm_init_mode_config(struct nv_drm_device *nv_dev,
const struct NvKmsKapiDeviceResourcesInfo *pResInfo)
{
struct drm_device *dev = nv_dev->dev;
drm_mode_config_init(dev);
drm_mode_create_dvi_i_properties(dev);
dev->mode_config.funcs = &nv_mode_config_funcs;
dev->mode_config.min_width = pResInfo->caps.minWidthInPixels;
dev->mode_config.min_height = pResInfo->caps.minHeightInPixels;
dev->mode_config.max_width = pResInfo->caps.maxWidthInPixels;
dev->mode_config.max_height = pResInfo->caps.maxHeightInPixels;
dev->mode_config.cursor_width = pResInfo->caps.maxCursorSizeInPixels;
dev->mode_config.cursor_height = pResInfo->caps.maxCursorSizeInPixels;
/*
* NVIDIA GPUs have no preferred depth. Arbitrarily report 24, to be
* consistent with other DRM drivers.
*/
dev->mode_config.preferred_depth = 24;
dev->mode_config.prefer_shadow = 1;
#if defined(NV_DRM_CRTC_STATE_HAS_ASYNC_FLIP) || \
defined(NV_DRM_CRTC_STATE_HAS_PAGEFLIP_FLAGS)
dev->mode_config.async_page_flip = true;
#else
dev->mode_config.async_page_flip = false;
#endif
#if defined(NV_DRM_FORMAT_MODIFIERS_PRESENT) && \
defined(NV_DRM_MODE_CONFIG_HAS_ALLOW_FB_MODIFIERS)
/* Allow clients to define framebuffer layouts using DRM format modifiers */
dev->mode_config.allow_fb_modifiers = true;
#endif
/* Initialize output polling support */
drm_kms_helper_poll_init(dev);
/* Disable output polling, because we don't support it yet */
drm_kms_helper_poll_disable(dev);
}
/*
* Helper function to enumerate encoders/connectors from NvKmsKapiDevice.
*/
static void nv_drm_enumerate_encoders_and_connectors
(
struct nv_drm_device *nv_dev
)
{
struct drm_device *dev = nv_dev->dev;
NvU32 nDisplays = 0;
if (!nvKms->getDisplays(nv_dev->pDevice, &nDisplays, NULL)) {
NV_DRM_DEV_LOG_ERR(
nv_dev,
"Failed to enumurate NvKmsKapiDisplay count");
}
if (nDisplays != 0) {
NvKmsKapiDisplay *hDisplays =
nv_drm_calloc(nDisplays, sizeof(*hDisplays));
if (hDisplays != NULL) {
if (!nvKms->getDisplays(nv_dev->pDevice, &nDisplays, hDisplays)) {
NV_DRM_DEV_LOG_ERR(
nv_dev,
"Failed to enumurate NvKmsKapiDisplay handles");
} else {
NvU32 i;
for (i = 0; i < nDisplays; i++) {
struct drm_encoder *encoder =
nv_drm_add_encoder(dev, hDisplays[i]);
if (IS_ERR(encoder)) {
NV_DRM_DEV_LOG_ERR(
nv_dev,
"Failed to add connector for NvKmsKapiDisplay 0x%08x",
hDisplays[i]);
}
}
}
nv_drm_free(hDisplays);
} else {
NV_DRM_DEV_LOG_ERR(
nv_dev,
"Failed to allocate memory for NvKmsKapiDisplay array");
}
}
}
#endif /* NV_DRM_ATOMIC_MODESET_AVAILABLE */
/*!
* 'NV_DRM_OUT_FENCE_PTR' is an atomic per-plane property that clients can use
* to request an out-fence fd for a particular plane that's being flipped.
* 'NV_DRM_OUT_FENCE_PTR' does NOT have the same behavior as the standard
* 'OUT_FENCE_PTR' property - the fd that's returned via 'NV_DRM_OUT_FENCE_PTR'
* will only be signaled once the buffers in the corresponding flip are flipped
* away from.
* In order to use this property, client needs to call set property function
* with user mode pointer as value. Once driver have post syncpt fd from flip reply,
* it will copy post syncpt fd at location pointed by user mode pointer.
*/
static int nv_drm_create_properties(struct nv_drm_device *nv_dev)
{
struct drm_prop_enum_list enum_list[3] = { };
int i, len = 0;
for (i = 0; i < 3; i++) {
enum_list[len].type = i;
enum_list[len].name = nv_get_input_colorspace_name(i);
len++;
}
#if defined(NV_LINUX_NVHOST_H_PRESENT) && defined(CONFIG_TEGRA_GRHOST)
if (!nv_dev->supportsSyncpts) {
return 0;
}
nv_dev->nv_out_fence_property =
drm_property_create_range(nv_dev->dev, DRM_MODE_PROP_ATOMIC,
"NV_DRM_OUT_FENCE_PTR", 0, U64_MAX);
if (nv_dev->nv_out_fence_property == NULL) {
return -ENOMEM;
}
#endif
nv_dev->nv_input_colorspace_property =
drm_property_create_enum(nv_dev->dev, 0, "NV_INPUT_COLORSPACE",
enum_list, len);
if (nv_dev->nv_input_colorspace_property == NULL) {
NV_DRM_LOG_ERR("Failed to create NV_INPUT_COLORSPACE property");
return -ENOMEM;
}
#if defined(NV_DRM_HAS_HDR_OUTPUT_METADATA)
nv_dev->nv_hdr_output_metadata_property =
drm_property_create(nv_dev->dev, DRM_MODE_PROP_BLOB,
"NV_HDR_STATIC_METADATA", 0);
if (nv_dev->nv_hdr_output_metadata_property == NULL) {
return -ENOMEM;
}
#endif
return 0;
}
#if defined(NV_DRM_ATOMIC_MODESET_AVAILABLE)
/*
* We can't just call drm_kms_helper_hotplug_event directly because
* fbdev_generic may attempt to set a mode from inside the hotplug event
* handler. Because kapi event handling runs on nvkms_kthread_q, this blocks
* other event processing including the flip completion notifier expected by
* nv_drm_atomic_commit.
*
* Defer hotplug event handling to a work item so that nvkms_kthread_q can
* continue processing events while a DRM modeset is in progress.
*/
static void nv_drm_handle_hotplug_event(struct work_struct *work)
{
struct delayed_work *dwork = to_delayed_work(work);
struct nv_drm_device *nv_dev =
container_of(dwork, struct nv_drm_device, hotplug_event_work);
drm_kms_helper_hotplug_event(nv_dev->dev);
}
#endif
static int nv_drm_load(struct drm_device *dev, unsigned long flags)
{
#if defined(NV_DRM_ATOMIC_MODESET_AVAILABLE)
struct NvKmsKapiDevice *pDevice;
struct NvKmsKapiAllocateDeviceParams allocateDeviceParams;
struct NvKmsKapiDeviceResourcesInfo resInfo;
#endif
#if defined(NV_DRM_FORMAT_MODIFIERS_PRESENT)
NvU64 kind;
NvU64 gen;
int i;
#endif
int ret;
struct nv_drm_device *nv_dev = to_nv_device(dev);
NV_DRM_DEV_LOG_INFO(nv_dev, "Loading driver");
#if defined(NV_DRM_ATOMIC_MODESET_AVAILABLE)
if (!drm_core_check_feature(dev, DRIVER_MODESET)) {
return 0;
}
/* Allocate NvKmsKapiDevice from GPU ID */
memset(&allocateDeviceParams, 0, sizeof(allocateDeviceParams));
allocateDeviceParams.gpuId = nv_dev->gpu_info.gpu_id;
allocateDeviceParams.privateData = nv_dev;
allocateDeviceParams.eventCallback = nv_drm_event_callback;
pDevice = nvKms->allocateDevice(&allocateDeviceParams);
if (pDevice == NULL) {
NV_DRM_DEV_LOG_ERR(nv_dev, "Failed to allocate NvKmsKapiDevice");
return -ENODEV;
}
/* Query information of resources available on device */
if (!nvKms->getDeviceResourcesInfo(pDevice, &resInfo)) {
nvKms->freeDevice(pDevice);
NV_DRM_DEV_LOG_ERR(
nv_dev,
"Failed to query NvKmsKapiDevice resources info");
return -ENODEV;
}
#if defined(NV_DRM_FBDEV_AVAILABLE)
/*
* If fbdev is enabled, take modeset ownership now before other DRM clients
* can take master (and thus NVKMS ownership).
*/
if (nv_drm_fbdev_module_param) {
if (!nvKms->grabOwnership(pDevice)) {
nvKms->freeDevice(pDevice);
NV_DRM_DEV_LOG_ERR(nv_dev, "Failed to grab NVKMS modeset ownership");
return -EBUSY;
}
nv_dev->hasFramebufferConsole = NV_TRUE;
}
#endif
mutex_lock(&nv_dev->lock);
/* Set NvKmsKapiDevice */
nv_dev->pDevice = pDevice;
nv_dev->pitchAlignment = resInfo.caps.pitchAlignment;
nv_dev->hasVideoMemory = resInfo.caps.hasVideoMemory;
nv_dev->genericPageKind = resInfo.caps.genericPageKind;
// Fermi-Volta use generation 0, Turing+ uses generation 2.
nv_dev->pageKindGeneration = (nv_dev->genericPageKind == 0x06) ? 2 : 0;
// Desktop GPUs and mobile GPUs Xavier and later use the same sector layout
nv_dev->sectorLayout = 1;
nv_dev->supportsSyncpts = resInfo.caps.supportsSyncpts;
nv_dev->semsurf_stride = resInfo.caps.semsurf.stride;
nv_dev->semsurf_max_submitted_offset =
resInfo.caps.semsurf.maxSubmittedOffset;
#if defined(NV_DRM_FORMAT_MODIFIERS_PRESENT)
gen = nv_dev->pageKindGeneration;
kind = nv_dev->genericPageKind;
for (i = 0; i <= 5; i++) {
nv_dev->modifiers[i] =
/* Log2(block height) ----------------------------------+ *
* Page Kind ------------------------------------+ | *
* Gob Height/Page Kind Generation --------+ | | *
* Sector layout ---------------------+ | | | *
* Compression --------------------+ | | | | *
* | | | | | */
DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(0, 1, gen, kind, 5 - i);
}
nv_dev->modifiers[i++] = DRM_FORMAT_MOD_LINEAR;
nv_dev->modifiers[i++] = DRM_FORMAT_MOD_INVALID;
#endif /* defined(NV_DRM_FORMAT_MODIFIERS_PRESENT) */
/* Initialize drm_device::mode_config */
nv_drm_init_mode_config(nv_dev, &resInfo);
ret = nv_drm_create_properties(nv_dev);
if (ret < 0) {
return -ENODEV;
}
if (!nvKms->declareEventInterest(
nv_dev->pDevice,
((1 << NVKMS_EVENT_TYPE_DPY_CHANGED) |
(1 << NVKMS_EVENT_TYPE_DYNAMIC_DPY_CONNECTED) |
(1 << NVKMS_EVENT_TYPE_FLIP_OCCURRED)))) {
NV_DRM_DEV_LOG_ERR(nv_dev, "Failed to register event mask");
}
/* Add crtcs */
nv_drm_enumerate_crtcs_and_planes(nv_dev, &resInfo);
/* Add connectors and encoders */
nv_drm_enumerate_encoders_and_connectors(nv_dev);
#if !defined(NV_DRM_CRTC_STATE_HAS_NO_VBLANK)
drm_vblank_init(dev, dev->mode_config.num_crtc);
#endif
/*
* Trigger hot-plug processing, to update connection status of
* all HPD supported connectors.
*/
drm_helper_hpd_irq_event(dev);
/* Enable event handling */
INIT_DELAYED_WORK(&nv_dev->hotplug_event_work, nv_drm_handle_hotplug_event);
atomic_set(&nv_dev->enable_event_handling, true);
init_waitqueue_head(&nv_dev->flip_event_wq);
mutex_unlock(&nv_dev->lock);
#endif /* NV_DRM_ATOMIC_MODESET_AVAILABLE */
return 0;
}
static void __nv_drm_unload(struct drm_device *dev)
{
#if defined(NV_DRM_ATOMIC_MODESET_AVAILABLE)
struct NvKmsKapiDevice *pDevice = NULL;
#endif
struct nv_drm_device *nv_dev = to_nv_device(dev);
NV_DRM_DEV_LOG_INFO(nv_dev, "Unloading driver");
#if defined(NV_DRM_ATOMIC_MODESET_AVAILABLE)
if (!drm_core_check_feature(dev, DRIVER_MODESET)) {
return;
}
/* Release modeset ownership if fbdev is enabled */
#if defined(NV_DRM_FBDEV_AVAILABLE)
if (nv_dev->hasFramebufferConsole) {
drm_atomic_helper_shutdown(dev);
nvKms->releaseOwnership(nv_dev->pDevice);
}
#endif
cancel_delayed_work_sync(&nv_dev->hotplug_event_work);
mutex_lock(&nv_dev->lock);
WARN_ON(nv_dev->subOwnershipGranted);
/* Disable event handling */
atomic_set(&nv_dev->enable_event_handling, false);
/* Clean up output polling */
drm_kms_helper_poll_fini(dev);
/* Clean up mode configuration */
drm_mode_config_cleanup(dev);
if (!nvKms->declareEventInterest(nv_dev->pDevice, 0x0)) {
NV_DRM_DEV_LOG_ERR(nv_dev, "Failed to stop event listening");
}
/* Unset NvKmsKapiDevice */
pDevice = nv_dev->pDevice;
nv_dev->pDevice = NULL;
mutex_unlock(&nv_dev->lock);
nvKms->freeDevice(pDevice);
#endif /* NV_DRM_ATOMIC_MODESET_AVAILABLE */
}
#if defined(NV_DRM_DRIVER_UNLOAD_HAS_INT_RETURN_TYPE)
static int nv_drm_unload(struct drm_device *dev)
{
__nv_drm_unload(dev);
return 0;
}
#else
static void nv_drm_unload(struct drm_device *dev)
{
__nv_drm_unload(dev);
}
#endif
#if defined(NV_DRM_ATOMIC_MODESET_AVAILABLE)
static int __nv_drm_master_set(struct drm_device *dev,
struct drm_file *file_priv, bool from_open)
{
struct nv_drm_device *nv_dev = to_nv_device(dev);
/*
* If this device is driving a framebuffer, then nvidia-drm already has
* modeset ownership. Otherwise, grab ownership now.
*/
if (!nv_dev->hasFramebufferConsole &&
!nvKms->grabOwnership(nv_dev->pDevice)) {
return -EINVAL;
}
nv_dev->drmMasterChangedSinceLastAtomicCommit = NV_TRUE;
return 0;
}
#if defined(NV_DRM_DRIVER_SET_MASTER_HAS_INT_RETURN_TYPE)
static int nv_drm_master_set(struct drm_device *dev,
struct drm_file *file_priv, bool from_open)
{
return __nv_drm_master_set(dev, file_priv, from_open);
}
#else
static void nv_drm_master_set(struct drm_device *dev,
struct drm_file *file_priv, bool from_open)
{
if (__nv_drm_master_set(dev, file_priv, from_open) != 0) {
NV_DRM_DEV_LOG_ERR(to_nv_device(dev), "Failed to grab modeset ownership");
}
}
#endif
#if defined(NV_DRM_MASTER_DROP_HAS_FROM_RELEASE_ARG)
static
void nv_drm_master_drop(struct drm_device *dev,
struct drm_file *file_priv, bool from_release)
#else
static
void nv_drm_master_drop(struct drm_device *dev, struct drm_file *file_priv)
#endif
{
struct nv_drm_device *nv_dev = to_nv_device(dev);
int err;
nv_drm_revoke_modeset_permission(dev, file_priv, 0);
nv_drm_revoke_sub_ownership(dev);
/*
* After dropping nvkms modeset onwership, it is not guaranteed that
* drm and nvkms modeset state will remain in sync. Therefore, disable
* all outputs and crtcs before dropping nvkms modeset ownership.
*
* First disable all active outputs atomically and then disable each crtc one
* by one, there is not helper function available to disable all crtcs
* atomically.
*/
drm_modeset_lock_all(dev);
if ((err = nv_drm_atomic_helper_disable_all(
dev,
dev->mode_config.acquire_ctx)) != 0) {
NV_DRM_DEV_LOG_ERR(
nv_dev,
"nv_drm_atomic_helper_disable_all failed with error code %d !",
err);
}
drm_modeset_unlock_all(dev);
if (!nv_dev->hasFramebufferConsole) {
nvKms->releaseOwnership(nv_dev->pDevice);
}
}
#endif /* NV_DRM_ATOMIC_MODESET_AVAILABLE */
#if defined(NV_DRM_BUS_PRESENT) || defined(NV_DRM_DRIVER_HAS_SET_BUSID)
static int nv_drm_pci_set_busid(struct drm_device *dev,
struct drm_master *master)
{
struct nv_drm_device *nv_dev = to_nv_device(dev);
master->unique = nv_drm_asprintf("pci:%04x:%02x:%02x.%d",
nv_dev->gpu_info.pci_info.domain,
nv_dev->gpu_info.pci_info.bus,
nv_dev->gpu_info.pci_info.slot,
nv_dev->gpu_info.pci_info.function);
if (master->unique == NULL) {
return -ENOMEM;
}
master->unique_len = strlen(master->unique);
return 0;
}
#endif
static int nv_drm_get_dev_info_ioctl(struct drm_device *dev,
void *data, struct drm_file *filep)
{
struct nv_drm_device *nv_dev = to_nv_device(dev);
struct drm_nvidia_get_dev_info_params *params = data;
if (dev->primary == NULL) {
return -ENOENT;
}
params->gpu_id = nv_dev->gpu_info.gpu_id;
params->primary_index = dev->primary->index;
params->supports_alloc = false;
params->generic_page_kind = 0;
params->page_kind_generation = 0;
params->sector_layout = 0;
params->supports_sync_fd = false;
params->supports_semsurf = false;
#if defined(NV_DRM_ATOMIC_MODESET_AVAILABLE)
/* Memory allocation and semaphore surfaces are only supported
* if the modeset = 1 parameter is set */
if (nv_dev->pDevice != NULL) {
params->supports_alloc = true;
params->generic_page_kind = nv_dev->genericPageKind;
params->page_kind_generation = nv_dev->pageKindGeneration;
params->sector_layout = nv_dev->sectorLayout;
if (nv_dev->semsurf_stride != 0) {
params->supports_semsurf = true;
#if defined(NV_SYNC_FILE_GET_FENCE_PRESENT)
params->supports_sync_fd = true;
#endif /* defined(NV_SYNC_FILE_GET_FENCE_PRESENT) */
}
}
#endif /* defined(NV_DRM_ATOMIC_MODESET_AVAILABLE) */
return 0;
}
static int nv_drm_dmabuf_supported_ioctl(struct drm_device *dev,
void *data, struct drm_file *filep)
{
/* check the pDevice since this only gets set if modeset = 1
* which is a requirement for the dma_buf extension to work
*/
struct nv_drm_device *nv_dev = to_nv_device(dev);
return nv_dev->pDevice ? 0 : -EINVAL;
}
static
int nv_drm_get_client_capability_ioctl(struct drm_device *dev,
void *data, struct drm_file *filep)
{
struct drm_nvidia_get_client_capability_params *params = data;
switch (params->capability) {
#if defined(DRM_CLIENT_CAP_STEREO_3D)
case DRM_CLIENT_CAP_STEREO_3D:
params->value = filep->stereo_allowed;
break;
#endif
#if defined(DRM_CLIENT_CAP_UNIVERSAL_PLANES)
case DRM_CLIENT_CAP_UNIVERSAL_PLANES:
params->value = filep->universal_planes;
break;
#endif
#if defined(DRM_CLIENT_CAP_ATOMIC)
case DRM_CLIENT_CAP_ATOMIC:
params->value = filep->atomic;
break;
#endif
default:
return -EINVAL;
}
return 0;
}
#if defined(NV_DRM_ATOMIC_MODESET_AVAILABLE)
static bool nv_drm_connector_is_dpy_id(struct drm_connector *connector,
NvU32 dpyId)
{
struct nv_drm_connector *nv_connector = to_nv_connector(connector);
return nv_connector->nv_detected_encoder &&
nv_connector->nv_detected_encoder->hDisplay == dpyId;
}
static int nv_drm_get_dpy_id_for_connector_id_ioctl(struct drm_device *dev,
void *data,
struct drm_file *filep)
{
struct drm_nvidia_get_dpy_id_for_connector_id_params *params = data;
struct drm_connector *connector;
struct nv_drm_connector *nv_connector;
int ret = 0;
if (!drm_core_check_feature(dev, DRIVER_MODESET)) {
return -EOPNOTSUPP;
}
// Importantly, drm_connector_lookup (with filep) will only return the
// connector if we are master, a lessee with the connector, or not master at
// all. It will return NULL if we are a lessee with other connectors.
connector = nv_drm_connector_lookup(dev, filep, params->connectorId);
if (!connector) {
return -EINVAL;
}
nv_connector = to_nv_connector(connector);
if (!nv_connector) {
ret = -EINVAL;
goto done;
}
if (!nv_connector->nv_detected_encoder) {
ret = -EINVAL;
goto done;
}
params->dpyId = nv_connector->nv_detected_encoder->hDisplay;
done:
nv_drm_connector_put(connector);
return ret;
}
static int nv_drm_get_connector_id_for_dpy_id_ioctl(struct drm_device *dev,
void *data,
struct drm_file *filep)
{
struct drm_nvidia_get_connector_id_for_dpy_id_params *params = data;
struct drm_connector *connector;
int ret = -EINVAL;
#if defined(NV_DRM_CONNECTOR_LIST_ITER_PRESENT)
struct drm_connector_list_iter conn_iter;
#endif
if (!drm_core_check_feature(dev, DRIVER_MODESET)) {
return -EOPNOTSUPP;
}
#if defined(NV_DRM_CONNECTOR_LIST_ITER_PRESENT)
nv_drm_connector_list_iter_begin(dev, &conn_iter);
#endif
/* Lookup for existing connector with same dpyId */
nv_drm_for_each_connector(connector, &conn_iter, dev) {
if (nv_drm_connector_is_dpy_id(connector, params->dpyId)) {
params->connectorId = connector->base.id;
ret = 0;
break;
}
}
#if defined(NV_DRM_CONNECTOR_LIST_ITER_PRESENT)
nv_drm_connector_list_iter_end(&conn_iter);
#endif
return ret;
}
static NvU32 nv_drm_get_head_bit_from_connector(struct drm_connector *connector)
{
struct nv_drm_connector *nv_connector = to_nv_connector(connector);
if (connector->state && connector->state->crtc) {
struct nv_drm_crtc *nv_crtc = to_nv_crtc(connector->state->crtc);
return NVBIT(nv_crtc->head);
} else if (nv_connector->nv_detected_encoder &&
nv_connector->nv_detected_encoder->base.crtc) {
struct nv_drm_crtc *nv_crtc =
to_nv_crtc(nv_connector->nv_detected_encoder->base.crtc);
return NVBIT(nv_crtc->head);
}
return 0;
}
static int nv_drm_grant_modeset_permission(struct drm_device *dev,
struct drm_nvidia_grant_permissions_params *params,
struct drm_file *filep)
{
struct nv_drm_device *nv_dev = to_nv_device(dev);
struct nv_drm_connector *target_nv_connector = NULL;
struct nv_drm_crtc *target_nv_crtc = NULL;
struct drm_connector *connector, *target_connector = NULL;
struct drm_crtc *crtc;
NvU32 head = 0, freeHeadBits, targetHeadBit, possible_crtcs;
int ret = 0;
#if defined(NV_DRM_CONNECTOR_LIST_ITER_PRESENT)
struct drm_connector_list_iter conn_iter;
#endif
#if NV_DRM_MODESET_LOCK_ALL_END_ARGUMENT_COUNT == 3
struct drm_modeset_acquire_ctx ctx;
DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE,
ret);
#else
mutex_lock(&dev->mode_config.mutex);
#endif
/* Get the connector for the dpyId. */
#if defined(NV_DRM_CONNECTOR_LIST_ITER_PRESENT)
nv_drm_connector_list_iter_begin(dev, &conn_iter);
#endif
nv_drm_for_each_connector(connector, &conn_iter, dev) {
if (nv_drm_connector_is_dpy_id(connector, params->dpyId)) {
target_connector =
nv_drm_connector_lookup(dev, filep, connector->base.id);
break;
}
}
#if defined(NV_DRM_CONNECTOR_LIST_ITER_PRESENT)
nv_drm_connector_list_iter_end(&conn_iter);
#endif
// Importantly, drm_connector_lookup/drm_crtc_find (with filep) will only
// return the object if we are master, a lessee with the object, or not
// master at all. It will return NULL if we are a lessee with other objects.
if (!target_connector) {
ret = -EINVAL;
goto done;
}
target_nv_connector = to_nv_connector(target_connector);
possible_crtcs =
target_nv_connector->nv_detected_encoder->base.possible_crtcs;
/* Target connector must not be previously granted. */
if (target_nv_connector->modeset_permission_filep) {
ret = -EINVAL;
goto done;
}
/* Add all heads that are owned and not already granted. */
freeHeadBits = 0;
nv_drm_for_each_crtc(crtc, dev) {
struct nv_drm_crtc *nv_crtc = to_nv_crtc(crtc);
if (nv_drm_crtc_find(dev, filep, crtc->base.id) &&
!nv_crtc->modeset_permission_filep &&
(drm_crtc_mask(crtc) & possible_crtcs)) {
freeHeadBits |= NVBIT(nv_crtc->head);
}
}
targetHeadBit = nv_drm_get_head_bit_from_connector(target_connector);
if (targetHeadBit & freeHeadBits) {
/* If a crtc is already being used by this connector, use it. */
freeHeadBits = targetHeadBit;
} else {
/* Otherwise, remove heads that are in use by other connectors. */
#if defined(NV_DRM_CONNECTOR_LIST_ITER_PRESENT)
nv_drm_connector_list_iter_begin(dev, &conn_iter);
#endif
nv_drm_for_each_connector(connector, &conn_iter, dev) {
freeHeadBits &= ~nv_drm_get_head_bit_from_connector(connector);
}
#if defined(NV_DRM_CONNECTOR_LIST_ITER_PRESENT)
nv_drm_connector_list_iter_end(&conn_iter);
#endif
}
/* Fail if no heads are available. */
if (!freeHeadBits) {
ret = -EINVAL;
goto done;
}
/*
* Loop through the crtc again and find a matching head.
* Record the filep that is using the crtc and the connector.
*/
nv_drm_for_each_crtc(crtc, dev) {
struct nv_drm_crtc *nv_crtc = to_nv_crtc(crtc);
if (freeHeadBits & NVBIT(nv_crtc->head)) {
target_nv_crtc = nv_crtc;
head = nv_crtc->head;
break;
}
}
if (!nvKms->grantPermissions(params->fd, nv_dev->pDevice, head,
params->dpyId)) {
ret = -EINVAL;
goto done;
}
target_nv_connector->modeset_permission_crtc = target_nv_crtc;
target_nv_connector->modeset_permission_filep = filep;
target_nv_crtc->modeset_permission_filep = filep;
done:
if (target_connector) {
nv_drm_connector_put(target_connector);
}
#if NV_DRM_MODESET_LOCK_ALL_END_ARGUMENT_COUNT == 3
DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
#else
mutex_unlock(&dev->mode_config.mutex);
#endif
return ret;
}
static int nv_drm_grant_sub_ownership(struct drm_device *dev,
struct drm_nvidia_grant_permissions_params *params)
{
int ret = -EINVAL;
struct nv_drm_device *nv_dev = to_nv_device(dev);
struct drm_modeset_acquire_ctx *pctx;
#if NV_DRM_MODESET_LOCK_ALL_END_ARGUMENT_COUNT == 3
struct drm_modeset_acquire_ctx ctx;
DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE,
ret);
pctx = &ctx;
#else
mutex_lock(&dev->mode_config.mutex);
pctx = dev->mode_config.acquire_ctx;
#endif
if (nv_dev->subOwnershipGranted ||
!nvKms->grantSubOwnership(params->fd, nv_dev->pDevice)) {
goto done;
}
/*
* When creating an ownership grant, shut down all heads and disable flip
* notifications.
*/
ret = nv_drm_atomic_helper_disable_all(dev, pctx);
if (ret != 0) {
NV_DRM_DEV_LOG_ERR(
nv_dev,
"nv_drm_atomic_helper_disable_all failed with error code %d!",
ret);
}
atomic_set(&nv_dev->enable_event_handling, false);
nv_dev->subOwnershipGranted = NV_TRUE;
ret = 0;
done:
#if NV_DRM_MODESET_LOCK_ALL_END_ARGUMENT_COUNT == 3
DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
#else
mutex_unlock(&dev->mode_config.mutex);
#endif
return 0;
}
static int nv_drm_grant_permission_ioctl(struct drm_device *dev, void *data,
struct drm_file *filep)
{
struct drm_nvidia_grant_permissions_params *params = data;
if (!drm_core_check_feature(dev, DRIVER_MODESET)) {
return -EOPNOTSUPP;
}
if (params->type == NV_DRM_PERMISSIONS_TYPE_MODESET) {
return nv_drm_grant_modeset_permission(dev, params, filep);
} else if (params->type == NV_DRM_PERMISSIONS_TYPE_SUB_OWNER) {
return nv_drm_grant_sub_ownership(dev, params);
}
return -EINVAL;
}
static int
nv_drm_atomic_disable_connector(struct drm_atomic_state *state,
struct nv_drm_connector *nv_connector)
{
struct drm_crtc_state *crtc_state;
struct drm_connector_state *connector_state;
int ret = 0;
if (nv_connector->modeset_permission_crtc) {
crtc_state = drm_atomic_get_crtc_state(
state, &nv_connector->modeset_permission_crtc->base);
if (!crtc_state) {
return -EINVAL;
}
crtc_state->active = false;
ret = drm_atomic_set_mode_prop_for_crtc(crtc_state, NULL);
if (ret < 0) {
return ret;
}
}
connector_state = drm_atomic_get_connector_state(state, &nv_connector->base);
if (!connector_state) {
return -EINVAL;
}
return drm_atomic_set_crtc_for_connector(connector_state, NULL);
}
static int nv_drm_revoke_modeset_permission(struct drm_device *dev,
struct drm_file *filep, NvU32 dpyId)
{
struct drm_modeset_acquire_ctx *pctx;
struct drm_atomic_state *state;
struct drm_connector *connector;
struct drm_crtc *crtc;
int ret = 0;
#if defined(NV_DRM_CONNECTOR_LIST_ITER_PRESENT)
struct drm_connector_list_iter conn_iter;
#endif
#if NV_DRM_MODESET_LOCK_ALL_END_ARGUMENT_COUNT == 3
struct drm_modeset_acquire_ctx ctx;
DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE,
ret);
pctx = &ctx;
#else
mutex_lock(&dev->mode_config.mutex);
pctx = dev->mode_config.acquire_ctx;
#endif
state = drm_atomic_state_alloc(dev);
if (!state) {
ret = -ENOMEM;
goto done;
}
state->acquire_ctx = pctx;
/*
* If dpyId is set, only revoke those specific resources. Otherwise,
* it is from closing the file so revoke all resources for that filep.
*/
#if defined(NV_DRM_CONNECTOR_LIST_ITER_PRESENT)
nv_drm_connector_list_iter_begin(dev, &conn_iter);
#endif
nv_drm_for_each_connector(connector, &conn_iter, dev) {
struct nv_drm_connector *nv_connector = to_nv_connector(connector);
if (nv_connector->modeset_permission_filep == filep &&
(!dpyId || nv_drm_connector_is_dpy_id(connector, dpyId))) {
ret = nv_drm_atomic_disable_connector(state, nv_connector);
if (ret < 0) {
break;
}
// Continue trying to revoke as much as possible.
nv_drm_connector_revoke_permissions(dev, nv_connector);
}
}
#if defined(NV_DRM_CONNECTOR_LIST_ITER_PRESENT)
nv_drm_connector_list_iter_end(&conn_iter);
#endif
if (ret < 0)
goto done;
nv_drm_for_each_crtc(crtc, dev) {
struct nv_drm_crtc *nv_crtc = to_nv_crtc(crtc);
if (nv_crtc->modeset_permission_filep == filep && !dpyId) {
nv_crtc->modeset_permission_filep = NULL;
}
}
ret = drm_atomic_commit(state);
done:
#if defined(NV_DRM_ATOMIC_STATE_REF_COUNTING_PRESENT)
if (state != NULL)
drm_atomic_state_put(state);
#else
if (state != NULL && ret != 0) {
drm_atomic_state_free(state);
} else {
/*
* In case of success, drm_atomic_commit() takes care to cleanup and
* free @state.
*
* Comment placed above drm_atomic_commit() says: The caller must not
* free or in any other way access @state. If the function fails then
* the caller must clean up @state itself.
*/
}
#endif
#if NV_DRM_MODESET_LOCK_ALL_END_ARGUMENT_COUNT == 3
DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
#else
mutex_unlock(&dev->mode_config.mutex);
#endif
return ret;
}
static int nv_drm_revoke_sub_ownership(struct drm_device *dev)
{
int ret = -EINVAL;
struct nv_drm_device *nv_dev = to_nv_device(dev);
#if NV_DRM_MODESET_LOCK_ALL_END_ARGUMENT_COUNT == 3
struct drm_modeset_acquire_ctx ctx;
DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE,
ret);
#else
mutex_lock(&dev->mode_config.mutex);
#endif
if (!nv_dev->subOwnershipGranted) {
goto done;
}
if (!nvKms->revokeSubOwnership(nv_dev->pDevice)) {
NV_DRM_DEV_LOG_ERR(nv_dev, "Failed to revoke sub-ownership from NVKMS");
goto done;
}
nv_dev->subOwnershipGranted = NV_FALSE;
atomic_set(&nv_dev->enable_event_handling, true);
ret = 0;
done:
#if NV_DRM_MODESET_LOCK_ALL_END_ARGUMENT_COUNT == 3
DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
#else
mutex_unlock(&dev->mode_config.mutex);
#endif
return ret;
}
static int nv_drm_revoke_permission_ioctl(struct drm_device *dev, void *data,
struct drm_file *filep)
{
struct drm_nvidia_revoke_permissions_params *params = data;
if (!drm_core_check_feature(dev, DRIVER_MODESET)) {
return -EOPNOTSUPP;
}
if (params->type == NV_DRM_PERMISSIONS_TYPE_MODESET) {
if (!params->dpyId) {
return -EINVAL;
}
return nv_drm_revoke_modeset_permission(dev, filep, params->dpyId);
} else if (params->type == NV_DRM_PERMISSIONS_TYPE_SUB_OWNER) {
return nv_drm_revoke_sub_ownership(dev);
}
return -EINVAL;
}
static void nv_drm_postclose(struct drm_device *dev, struct drm_file *filep)
{
/*
* Some systems like android can reach here without initializing the
* device, so check for that.
*/
if (dev->mode_config.num_crtc > 0 &&
dev->mode_config.crtc_list.next != NULL &&
dev->mode_config.crtc_list.prev != NULL &&
dev->mode_config.num_connector > 0 &&
dev->mode_config.connector_list.next != NULL &&
dev->mode_config.connector_list.prev != NULL) {
nv_drm_revoke_modeset_permission(dev, filep, 0);
}
}
#endif /* NV_DRM_ATOMIC_MODESET_AVAILABLE */
#if defined(NV_DRM_MASTER_HAS_LEASES)
static struct drm_master *nv_drm_find_lessee(struct drm_master *master,
int lessee_id)
{
int object;
void *entry;
while (master->lessor != NULL) {
master = master->lessor;
}
idr_for_each_entry(&master->lessee_idr, entry, object)
{
if (object == lessee_id) {
return entry;
}
}
return NULL;
}
static void nv_drm_get_revoked_objects(struct drm_device *dev,
struct drm_file *filep, unsigned int cmd,
unsigned long arg, int **objects,
int *objects_count)
{
unsigned int ioc_size;
struct drm_mode_revoke_lease revoke_lease;
struct drm_master *lessor, *lessee;
void *entry;
int *objs;
int obj, obj_count, obj_i;
ioc_size = _IOC_SIZE(cmd);
if (ioc_size > sizeof(revoke_lease)) {
return;
}
if (copy_from_user(&revoke_lease, (void __user *)arg, ioc_size) != 0) {
return;
}
lessor = nv_drm_file_get_master(filep);
if (lessor == NULL) {
return;
}
mutex_lock(&dev->mode_config.idr_mutex);
lessee = nv_drm_find_lessee(lessor, revoke_lease.lessee_id);
if (lessee == NULL) {
goto done;
}
obj_count = 0;
idr_for_each_entry(&lessee->leases, entry, obj) {
++obj_count;
}
if (obj_count == 0) {
goto done;
}
objs = nv_drm_calloc(obj_count, sizeof(int));
if (objs == NULL) {
goto done;
}
obj_i = 0;
idr_for_each_entry(&lessee->leases, entry, obj) {
objs[obj_i++] = obj;
}
*objects = objs;
*objects_count = obj_count;
done:
mutex_unlock(&dev->mode_config.idr_mutex);
drm_master_put(&lessor);
}
static bool nv_drm_is_in_objects(int object, int *objects, int objects_count)
{
int i;
for (i = 0; i < objects_count; ++i) {
if (objects[i] == object) {
return true;
}
}
return false;
}
static void nv_drm_finish_revoking_objects(struct drm_device *dev,
struct drm_file *filep, int *objects,
int objects_count)
{
struct drm_connector *connector;
struct drm_crtc *crtc;
#if defined(NV_DRM_CONNECTOR_LIST_ITER_PRESENT)
struct drm_connector_list_iter conn_iter;
#endif
#if NV_DRM_MODESET_LOCK_ALL_END_ARGUMENT_COUNT == 3
int ret = 0;
struct drm_modeset_acquire_ctx ctx;
DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE,
ret);
#else
mutex_lock(&dev->mode_config.mutex);
#endif
#if defined(NV_DRM_CONNECTOR_LIST_ITER_PRESENT)
nv_drm_connector_list_iter_begin(dev, &conn_iter);
#endif
nv_drm_for_each_connector(connector, &conn_iter, dev) {
struct nv_drm_connector *nv_connector = to_nv_connector(connector);
if (nv_connector->modeset_permission_filep &&
nv_drm_is_in_objects(connector->base.id, objects, objects_count)) {
nv_drm_connector_revoke_permissions(dev, nv_connector);
}
}
#if defined(NV_DRM_CONNECTOR_LIST_ITER_PRESENT)
nv_drm_connector_list_iter_end(&conn_iter);
#endif
nv_drm_for_each_crtc(crtc, dev) {
struct nv_drm_crtc *nv_crtc = to_nv_crtc(crtc);
if (nv_crtc->modeset_permission_filep &&
nv_drm_is_in_objects(crtc->base.id, objects, objects_count)) {
nv_crtc->modeset_permission_filep = NULL;
}
}
#if NV_DRM_MODESET_LOCK_ALL_END_ARGUMENT_COUNT == 3
DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
#else
mutex_unlock(&dev->mode_config.mutex);
#endif
}
#endif /* NV_DRM_MASTER_HAS_LEASES */
#if defined(NV_DRM_BUS_PRESENT)
#if defined(NV_DRM_BUS_HAS_GET_IRQ)
static int nv_drm_bus_get_irq(struct drm_device *dev)
{
return 0;
}
#endif
#if defined(NV_DRM_BUS_HAS_GET_NAME)
static const char *nv_drm_bus_get_name(struct drm_device *dev)
{
return "nvidia-drm";
}
#endif
static struct drm_bus nv_drm_bus = {
#if defined(NV_DRM_BUS_HAS_BUS_TYPE)
.bus_type = DRIVER_BUS_PCI,
#endif
#if defined(NV_DRM_BUS_HAS_GET_IRQ)
.get_irq = nv_drm_bus_get_irq,
#endif
#if defined(NV_DRM_BUS_HAS_GET_NAME)
.get_name = nv_drm_bus_get_name,
#endif
.set_busid = nv_drm_pci_set_busid,
};
#endif /* NV_DRM_BUS_PRESENT */
/*
* Wrapper around drm_ioctl to hook in to upstream ioctl.
*
* Currently used to add additional handling to REVOKE_LEASE.
*/
static long nv_drm_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
long retcode;
#if defined(NV_DRM_MASTER_HAS_LEASES)
struct drm_file *file_priv = filp->private_data;
struct drm_device *dev = file_priv->minor->dev;
int *objects = NULL;
int objects_count = 0;
if (cmd == DRM_IOCTL_MODE_REVOKE_LEASE) {
// Save the revoked objects before revoking.
nv_drm_get_revoked_objects(dev, file_priv, cmd, arg, &objects,
&objects_count);
}
#endif
retcode = drm_ioctl(filp, cmd, arg);
#if defined(NV_DRM_MASTER_HAS_LEASES)
if (cmd == DRM_IOCTL_MODE_REVOKE_LEASE && objects) {
if (retcode == 0) {
// If revoking was successful, finish revoking the objects.
nv_drm_finish_revoking_objects(dev, file_priv, objects,
objects_count);
}
nv_drm_free(objects);
}
#endif
return retcode;
}
static const struct file_operations nv_drm_fops = {
.owner = THIS_MODULE,
.open = drm_open,
.release = drm_release,
.unlocked_ioctl = nv_drm_ioctl,
#if defined(CONFIG_COMPAT)
.compat_ioctl = drm_compat_ioctl,
#endif
#if defined(NV_DRM_ATOMIC_MODESET_AVAILABLE)
.mmap = nv_drm_mmap,
#endif
.poll = drm_poll,
.read = drm_read,
.llseek = noop_llseek,
#if defined(NV_FILE_OPERATIONS_FOP_UNSIGNED_OFFSET_PRESENT)
.fop_flags = FOP_UNSIGNED_OFFSET,
#endif
};
static const struct drm_ioctl_desc nv_drm_ioctls[] = {
#if defined(NV_DRM_ATOMIC_MODESET_AVAILABLE)
DRM_IOCTL_DEF_DRV(NVIDIA_GEM_IMPORT_NVKMS_MEMORY,
nv_drm_gem_import_nvkms_memory_ioctl,
DRM_RENDER_ALLOW|DRM_UNLOCKED),
#endif /* NV_DRM_ATOMIC_MODESET_AVAILABLE */
DRM_IOCTL_DEF_DRV(NVIDIA_GEM_IMPORT_USERSPACE_MEMORY,
nv_drm_gem_import_userspace_memory_ioctl,
DRM_RENDER_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(NVIDIA_GEM_MAP_OFFSET,
nv_drm_gem_map_offset_ioctl,
DRM_RENDER_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(NVIDIA_GET_DEV_INFO,
nv_drm_get_dev_info_ioctl,
DRM_RENDER_ALLOW|DRM_UNLOCKED),
#if defined(NV_DRM_FENCE_AVAILABLE)
DRM_IOCTL_DEF_DRV(NVIDIA_FENCE_SUPPORTED,
nv_drm_fence_supported_ioctl,
DRM_RENDER_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(NVIDIA_PRIME_FENCE_CONTEXT_CREATE,
nv_drm_prime_fence_context_create_ioctl,
DRM_RENDER_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(NVIDIA_GEM_PRIME_FENCE_ATTACH,
nv_drm_gem_prime_fence_attach_ioctl,
DRM_RENDER_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(NVIDIA_SEMSURF_FENCE_CTX_CREATE,
nv_drm_semsurf_fence_ctx_create_ioctl,
DRM_RENDER_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(NVIDIA_SEMSURF_FENCE_CREATE,
nv_drm_semsurf_fence_create_ioctl,
DRM_RENDER_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(NVIDIA_SEMSURF_FENCE_WAIT,
nv_drm_semsurf_fence_wait_ioctl,
DRM_RENDER_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(NVIDIA_SEMSURF_FENCE_ATTACH,
nv_drm_semsurf_fence_attach_ioctl,
DRM_RENDER_ALLOW|DRM_UNLOCKED),
#endif
/*
* DRM_UNLOCKED is implicit for all non-legacy DRM driver IOCTLs since Linux
* v4.10 commit fa5386459f06 "drm: Used DRM_LEGACY for all legacy functions"
* (Linux v4.4 commit ea487835e887 "drm: Enforce unlocked ioctl operation
* for kms driver ioctls" previously did it only for drivers that set the
* DRM_MODESET flag), so this will race with SET_CLIENT_CAP. Linux v4.11
* commit dcf727ab5d17 "drm: setclientcap doesn't need the drm BKL" also
* removed locking from SET_CLIENT_CAP so there is no use attempting to lock
* manually. The latter commit acknowledges that this can expose userspace
* to inconsistent behavior when racing with itself, but accepts that risk.
*/
DRM_IOCTL_DEF_DRV(NVIDIA_GET_CLIENT_CAPABILITY,
nv_drm_get_client_capability_ioctl,
0),
#if defined(NV_DRM_ATOMIC_MODESET_AVAILABLE)
DRM_IOCTL_DEF_DRV(NVIDIA_GET_CRTC_CRC32,
nv_drm_get_crtc_crc32_ioctl,
DRM_RENDER_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(NVIDIA_GET_CRTC_CRC32_V2,
nv_drm_get_crtc_crc32_v2_ioctl,
DRM_RENDER_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(NVIDIA_GEM_EXPORT_NVKMS_MEMORY,
nv_drm_gem_export_nvkms_memory_ioctl,
DRM_RENDER_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(NVIDIA_GEM_ALLOC_NVKMS_MEMORY,
nv_drm_gem_alloc_nvkms_memory_ioctl,
DRM_RENDER_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(NVIDIA_GEM_EXPORT_DMABUF_MEMORY,
nv_drm_gem_export_dmabuf_memory_ioctl,
DRM_RENDER_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(NVIDIA_GEM_IDENTIFY_OBJECT,
nv_drm_gem_identify_object_ioctl,
DRM_RENDER_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(NVIDIA_DMABUF_SUPPORTED,
nv_drm_dmabuf_supported_ioctl,
DRM_RENDER_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(NVIDIA_GET_DPY_ID_FOR_CONNECTOR_ID,
nv_drm_get_dpy_id_for_connector_id_ioctl,
DRM_RENDER_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(NVIDIA_GET_CONNECTOR_ID_FOR_DPY_ID,
nv_drm_get_connector_id_for_dpy_id_ioctl,
DRM_RENDER_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF_DRV(NVIDIA_GRANT_PERMISSIONS,
nv_drm_grant_permission_ioctl,
DRM_UNLOCKED|DRM_MASTER),
DRM_IOCTL_DEF_DRV(NVIDIA_REVOKE_PERMISSIONS,
nv_drm_revoke_permission_ioctl,
DRM_UNLOCKED|DRM_MASTER),
#endif /* NV_DRM_ATOMIC_MODESET_AVAILABLE */
};
static struct drm_driver nv_drm_driver = {
.driver_features =
#if defined(NV_DRM_DRIVER_PRIME_FLAG_PRESENT)
DRIVER_PRIME |
#endif
DRIVER_GEM | DRIVER_RENDER,
#if defined(NV_DRM_DRIVER_HAS_GEM_FREE_OBJECT)
.gem_free_object = nv_drm_gem_free,
#endif
.ioctls = nv_drm_ioctls,
.num_ioctls = ARRAY_SIZE(nv_drm_ioctls),
/*
* linux-next commit 71a7974ac701 ("drm/prime: Unexport helpers for fd/handle
* conversion") unexports drm_gem_prime_handle_to_fd() and
* drm_gem_prime_fd_to_handle().
*
* Prior linux-next commit 6b85aa68d9d5 ("drm: Enable PRIME import/export for
* all drivers") made these helpers the default when .prime_handle_to_fd /
* .prime_fd_to_handle are unspecified, so it's fine to just skip specifying
* them if the helpers aren't present.
*/
#if NV_IS_EXPORT_SYMBOL_PRESENT_drm_gem_prime_handle_to_fd
.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
#endif
#if NV_IS_EXPORT_SYMBOL_PRESENT_drm_gem_prime_fd_to_handle
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
#endif
.gem_prime_import = nv_drm_gem_prime_import,
.gem_prime_import_sg_table = nv_drm_gem_prime_import_sg_table,
#if defined(NV_DRM_DRIVER_HAS_GEM_PRIME_CALLBACKS)
.gem_prime_export = drm_gem_prime_export,
.gem_prime_get_sg_table = nv_drm_gem_prime_get_sg_table,
.gem_prime_vmap = nv_drm_gem_prime_vmap,
.gem_prime_vunmap = nv_drm_gem_prime_vunmap,
.gem_vm_ops = &nv_drm_gem_vma_ops,
#endif
#if defined(NV_DRM_DRIVER_HAS_GEM_PRIME_RES_OBJ)
.gem_prime_res_obj = nv_drm_gem_prime_res_obj,
#endif
#if defined(NV_DRM_DRIVER_HAS_SET_BUSID)
.set_busid = nv_drm_pci_set_busid,
#endif
.load = nv_drm_load,
.unload = nv_drm_unload,
#if defined(NV_DRM_ATOMIC_MODESET_AVAILABLE)
.postclose = nv_drm_postclose,
#endif
.fops = &nv_drm_fops,
#if defined(NV_DRM_BUS_PRESENT)
.bus = &nv_drm_bus,
#endif
.name = "nvidia-drm",
.desc = "NVIDIA DRM driver",
#if defined(NV_DRM_DRIVER_HAS_DATE)
.date = "20160202",
#endif
#if defined(NV_DRM_DRIVER_HAS_DEVICE_LIST)
.device_list = LIST_HEAD_INIT(nv_drm_driver.device_list),
#elif defined(NV_DRM_DRIVER_HAS_LEGACY_DEV_LIST)
.legacy_dev_list = LIST_HEAD_INIT(nv_drm_driver.legacy_dev_list),
#endif
// XXX implement nvidia-drm's own .fbdev_probe callback that uses NVKMS kapi directly
#if defined(NV_DRM_FBDEV_AVAILABLE) && defined(DRM_FBDEV_TTM_DRIVER_OPS)
DRM_FBDEV_TTM_DRIVER_OPS,
#endif
};
/*
* Update the global nv_drm_driver for the intended features.
*
* It defaults to PRIME-only, but is upgraded to atomic modeset if the
* kernel supports atomic modeset and the 'modeset' kernel module
* parameter is true.
*/
void nv_drm_update_drm_driver_features(void)
{
#if defined(NV_DRM_ATOMIC_MODESET_AVAILABLE)
if (!nv_drm_modeset_module_param) {
return;
}
nv_drm_driver.driver_features |= DRIVER_MODESET | DRIVER_ATOMIC;
nv_drm_driver.master_set = nv_drm_master_set;
nv_drm_driver.master_drop = nv_drm_master_drop;
nv_drm_driver.dumb_create = nv_drm_dumb_create;
nv_drm_driver.dumb_map_offset = nv_drm_dumb_map_offset;
#if defined(NV_DRM_DRIVER_HAS_DUMB_DESTROY)
nv_drm_driver.dumb_destroy = nv_drm_dumb_destroy;
#endif /* NV_DRM_DRIVER_HAS_DUMB_DESTROY */
#endif /* NV_DRM_ATOMIC_MODESET_AVAILABLE */
}
/*
* Helper function for allocate/register DRM device for given NVIDIA GPU ID.
*/
void nv_drm_register_drm_device(const nv_gpu_info_t *gpu_info)
{
struct nv_drm_device *nv_dev = NULL;
struct drm_device *dev = NULL;
struct device *device = gpu_info->os_device_ptr;
DRM_DEBUG(
"Registering device for NVIDIA GPU ID 0x08%x",
gpu_info->gpu_id);
/* Allocate NVIDIA-DRM device */
nv_dev = nv_drm_calloc(1, sizeof(*nv_dev));
if (nv_dev == NULL) {
NV_DRM_LOG_ERR(
"Failed to allocate memory for NVIDIA-DRM device object");
return;
}
nv_dev->gpu_info = *gpu_info;
#if defined(NV_DRM_ATOMIC_MODESET_AVAILABLE)
mutex_init(&nv_dev->lock);
#endif
/* Allocate DRM device */
dev = drm_dev_alloc(&nv_drm_driver, device);
if (dev == NULL) {
NV_DRM_DEV_LOG_ERR(nv_dev, "Failed to allocate device");
goto failed_drm_alloc;
}
dev->dev_private = nv_dev;
nv_dev->dev = dev;
bool bus_is_pci =
#if defined(NV_LINUX)
device->bus == &pci_bus_type;
#elif defined(NV_BSD)
devclass_find("pci");
#endif
#if defined(NV_DRM_DEVICE_HAS_PDEV)
if (bus_is_pci) {
dev->pdev = to_pci_dev(device);
}
#endif
/* Register DRM device to DRM sub-system */
if (drm_dev_register(dev, 0) != 0) {
NV_DRM_DEV_LOG_ERR(nv_dev, "Failed to register device");
goto failed_drm_register;
}
#if defined(NV_DRM_FBDEV_AVAILABLE)
if (nv_drm_fbdev_module_param &&
drm_core_check_feature(dev, DRIVER_MODESET)) {
if (bus_is_pci) {
struct pci_dev *pdev = to_pci_dev(device);
#if defined(NV_DRM_APERTURE_REMOVE_CONFLICTING_PCI_FRAMEBUFFERS_PRESENT)
#if defined(NV_DRM_APERTURE_REMOVE_CONFLICTING_PCI_FRAMEBUFFERS_HAS_DRIVER_ARG)
drm_aperture_remove_conflicting_pci_framebuffers(pdev, &nv_drm_driver);
#else
drm_aperture_remove_conflicting_pci_framebuffers(pdev, nv_drm_driver.name);
#endif
#elif defined(NV_APERTURE_REMOVE_CONFLICTING_PCI_DEVICES_PRESENT)
aperture_remove_conflicting_pci_devices(pdev, nv_drm_driver.name);
#endif
}
#if defined(NV_DRM_CLIENT_AVAILABLE)
drm_client_setup(dev, NULL);
#elif defined(NV_DRM_FBDEV_TTM_AVAILABLE)
drm_fbdev_ttm_setup(dev, 32);
#elif defined(NV_DRM_FBDEV_GENERIC_AVAILABLE)
drm_fbdev_generic_setup(dev, 32);
#endif
}
#endif /* defined(NV_DRM_FBDEV_AVAILABLE) */
/* Add NVIDIA-DRM device into list */
nv_dev->next = dev_list;
dev_list = nv_dev;
return; /* Success */
failed_drm_register:
nv_drm_dev_free(dev);
failed_drm_alloc:
nv_drm_free(nv_dev);
}
/*
* Enumerate NVIDIA GPUs and allocate/register DRM device for each of them.
*/
#if defined(NV_LINUX)
int nv_drm_probe_devices(void)
{
nv_gpu_info_t *gpu_info = NULL;
NvU32 gpu_count = 0;
NvU32 i;
int ret = 0;
nv_drm_update_drm_driver_features();
/* Enumerate NVIDIA GPUs */
gpu_info = nv_drm_calloc(NV_MAX_GPUS, sizeof(*gpu_info));
if (gpu_info == NULL) {
ret = -ENOMEM;
NV_DRM_LOG_ERR("Failed to allocate gpu ids arrays");
goto done;
}
gpu_count = nvKms->enumerateGpus(gpu_info);
if (gpu_count == 0) {
NV_DRM_LOG_INFO("Not found NVIDIA GPUs");
goto done;
}
WARN_ON(gpu_count > NV_MAX_GPUS);
/* Register DRM device for each NVIDIA GPU */
for (i = 0; i < gpu_count; i++) {
nv_drm_register_drm_device(&gpu_info[i]);
}
done:
nv_drm_free(gpu_info);
return ret;
}
#endif
/*
* Unregister all NVIDIA DRM devices.
*/
void nv_drm_remove_devices(void)
{
while (dev_list != NULL) {
struct nv_drm_device *next = dev_list->next;
struct drm_device *dev = dev_list->dev;
drm_dev_unregister(dev);
nv_drm_dev_free(dev);
nv_drm_free(dev_list);
dev_list = next;
}
}
/*
* Handle system suspend and resume.
*
* Normally, a DRM driver would use drm_mode_config_helper_suspend() to save the
* current state on suspend and drm_mode_config_helper_resume() to restore it
* after resume. This works for upstream drivers because user-mode tasks are
* frozen before the suspend hook is called.
*
* In the case of nvidia-drm, the suspend hook is also called when 'suspend' is
* written to /proc/driver/nvidia/suspend, before user-mode tasks are frozen.
* However, we don't actually need to save and restore the display state because
* the driver requires a VT switch to an unused VT before suspending and a
* switch back to the application (or fbdev console) on resume. The DRM client
* (or fbdev helper functions) will restore the appropriate mode on resume.
*
*/
void nv_drm_suspend_resume(NvBool suspend)
{
static DEFINE_MUTEX(nv_drm_suspend_mutex);
static NvU32 nv_drm_suspend_count = 0;
struct nv_drm_device *nv_dev;
mutex_lock(&nv_drm_suspend_mutex);
/*
* Count the number of times the driver is asked to suspend. Suspend all DRM
* devices on the first suspend call and resume them on the last resume
* call. This is necessary because the kernel may call nvkms_suspend()
* simultaneously for each GPU, but NVKMS itself also suspends all GPUs on
* the first call.
*/
if (suspend) {
if (nv_drm_suspend_count++ > 0) {
goto done;
}
} else {
BUG_ON(nv_drm_suspend_count == 0);
if (--nv_drm_suspend_count > 0) {
goto done;
}
}
#if defined(NV_DRM_ATOMIC_MODESET_AVAILABLE)
nv_dev = dev_list;
/*
* NVKMS shuts down all heads on suspend. Update DRM state accordingly.
*/
for (nv_dev = dev_list; nv_dev; nv_dev = nv_dev->next) {
struct drm_device *dev = nv_dev->dev;
if (!drm_core_check_feature(dev, DRIVER_MODESET)) {
continue;
}
if (suspend) {
drm_kms_helper_poll_disable(dev);
#if defined(NV_DRM_FBDEV_AVAILABLE)
drm_fb_helper_set_suspend_unlocked(dev->fb_helper, 1);
#endif
drm_mode_config_reset(dev);
} else {
#if defined(NV_DRM_FBDEV_AVAILABLE)
drm_fb_helper_set_suspend_unlocked(dev->fb_helper, 0);
#endif
drm_kms_helper_poll_enable(dev);
}
}
#endif /* NV_DRM_ATOMIC_MODESET_AVAILABLE */
done:
mutex_unlock(&nv_drm_suspend_mutex);
}
#endif /* NV_DRM_AVAILABLE */
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