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refactor into lib/app

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Ole Algoritme
2024-03-24 11:18:17 +01:00
parent 372666ec8c
commit b329b7fdd9
11 changed files with 162 additions and 104 deletions
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3
.gitignore vendored
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@@ -1 +1,4 @@
gddr6
build/
*.o
*.a

15
CMakeLists.txt Normal file
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@@ -0,0 +1,15 @@
# CMakeLists.txt
cmake_minimum_required(VERSION 3.10)
project(gddr6_project)
add_subdirectory(lib)
add_subdirectory(app)
install(TARGETS gddr6
RUNTIME DESTINATION ${CMAKE_INSTALL_PREFIX}/bin
)
install(TARGETS gddr6_lib
ARCHIVE DESTINATION ${CMAKE_INSTALL_PREFIX}/lib
)

6
Makefile
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@@ -1,6 +0,0 @@
all:
gcc -std=c11 -O3 -Wall -Werror -Wextra -Wshadow -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wvla -o gddr6 gddr6.c -lpci
clean:
rm -f gddr6
install:
cp gddr6 /usr/local/bin/

6
README.md
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@@ -17,10 +17,12 @@ sudo update-grub
sudo reboot
```
## Clone & Run
## Installation (cmake)
```
git clone https://github.com/olealgoritme/gddr6
cd gddr6 && make && sudo ./gddr6
cd gddr6
./build_install.sh
sudo gddr6
```
## Supported GPUs

13
app/CMakeLists.txt Normal file
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@@ -0,0 +1,13 @@
# ./app/CMakeLists.txt
cmake_minimum_required(VERSION 3.10)
project(gddr6_app)
set(APP_SOURCES src/app.c)
add_executable(gddr6 ${APP_SOURCES})
target_link_libraries(gddr6 PRIVATE gddr6_lib)
target_link_libraries(gddr6 PRIVATE pci)
set_target_properties(gddr6 PROPERTIES
RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin"
)

26
app/src/app.c Normal file
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@@ -0,0 +1,26 @@
// app.c
#include "gddr6.h"
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char **argv) {
struct device devices[32];
int num_devs = gddr6_detect_compatible_gpus(devices, 32);
if (num_devs == 0) {
printf("No compatible GPU found.\n");
return 1;
}
for (int i = 0; i < num_devs; i++) {
struct device *device = &devices[i];
printf("Device: %s %s (%s / 0x%04x) pci=%x:%x:%x\n", device->name, device->vram,
device->arch, device->dev_id, device->bus, device->dev, device->func);
}
gddr6_initialize();
gddr6_monitor_temperatures(devices, num_devs);
gddr6_cleanup(0);
return 0;
}

30
build_install.sh Executable file
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@@ -0,0 +1,30 @@
# build_install.sh
#!/bin/sh
echo "Creating build directory..."
mkdir -p build && cd build
echo "Running cmake..."
cmake ..
echo "Building..."
cmake --build . --config Release
echo ""
read -p "Do you want to SUDO CMAKE INSTALL libgddr6.a and gddr6 binary to /usr/local? (y/n) " answer
case $answer in
[Yy]*)
sudo cmake --install . --prefix /usr/local
echo "Installing..."
;;
[Nn]*)
echo "Skipping installation."
;;
*)
echo "Please answer y or n."
;;
esac
cd ..

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gddr6_use.gif
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13
lib/CMakeLists.txt Normal file
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@@ -0,0 +1,13 @@
# ./lib/CMakeLists.txt
cmake_minimum_required(VERSION 3.10)
project(gddr6_lib)
set(LIB_SOURCES src/gddr6.c)
# Static library (libgddr6)
add_library(gddr6_lib STATIC ${LIB_SOURCES})
target_include_directories(gddr6_lib PUBLIC include)
set_target_properties(gddr6_lib PROPERTIES
OUTPUT_NAME "gddr6" # rename libgddr6_lib.a to libgddr6.a
ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib"
)

22
lib/include/gddr6.h Normal file
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@@ -0,0 +1,22 @@
// gddr6.h
#ifndef GDDR6_H
#define GDDR6_H
#include <stdint.h>
struct device {
uint32_t bar0;
uint8_t bus, dev, func;
uint32_t offset;
uint16_t dev_id;
const char *vram;
const char *arch;
const char *name;
};
void gddr6_initialize(void);
void gddr6_cleanup(int signal);
void gddr6_monitor_temperatures(const struct device *devices, int num_devices);
int gddr6_detect_compatible_gpus(struct device *devices, int max_devices);
#endif // GDDR6_H

132
gddr6.c → lib/src/gddr6.c
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@@ -1,5 +1,7 @@
// gddr6.c
#define _GNU_SOURCE
#include "gddr6.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
@@ -12,33 +14,16 @@
#include <signal.h>
#define PG_SZ sysconf(_SC_PAGE_SIZE)
#define PRINT_ERROR() \
#define PRINT_ERROR() \
do { \
fprintf(stderr, "Error at line %d, file %s (%d) [%s]\n", \
__LINE__, __FILE__, errno, strerror(errno)); exit(1); \
} while(0)
static int fd = -1;
static void *map_base = MAP_FAILED;
static struct device devices[32];
// device struct
struct device
{
uint32_t bar0;
uint8_t bus, dev, func;
uint32_t offset;
uint16_t dev_id;
const char *vram;
const char *arch;
const char *name;
};
// variables
int fd;
void *map_base;
struct device devices[32];
// device table
struct device dev_table[] =
{
{ .offset = 0x0000E2A8, .dev_id = 0x2684, .vram = "GDDR6X", .arch = "AD102", .name = "RTX 4090" },
@@ -62,47 +47,15 @@ struct device dev_table[] =
};
// prototypes
void cleanup(int signal);
void cleanup_sig_handler(void);
int pci_detect_dev(void);
// cleanup
void cleanup(int signal)
void gddr6_initialize(void)
{
if (signal == SIGHUP || signal == SIGINT || signal == SIGTERM)
{
if (map_base != (void *) -1)
munmap(map_base, PG_SZ);
if (fd != -1)
close(fd);
exit(0);
const char *MEM = "/dev/mem";
if ((fd = open(MEM, O_RDONLY)) == -1) {
PRINT_ERROR();
}
}
// cleanup signal handler
void cleanup_sig_handler(void)
{
struct sigaction sa;
sa.sa_handler = &cleanup;
sa.sa_flags = 0;
sigfillset(&sa.sa_mask);
if (sigaction(SIGINT, &sa, NULL) < 0)
perror("Cannot handle SIGINT");
if (sigaction(SIGHUP, &sa, NULL) < 0)
perror("Cannot handle SIGHUP");
if (sigaction(SIGTERM, &sa, NULL) < 0)
perror("Cannot handle SIGTERM");
}
// pci device detection
int pci_detect_dev(void)
int gddr6_detect_compatible_gpus(struct device *devices, int max_devices)
{
struct pci_access *pacc = NULL;
struct pci_dev *pci_dev = NULL;
@@ -135,57 +88,46 @@ int pci_detect_dev(void)
return num_devs;
}
int main(int argc, char **argv)
void gddr6_cleanup(int signal)
{
if (map_base != MAP_FAILED)
{
munmap(map_base, PG_SZ);
map_base = MAP_FAILED;
}
if (fd != -1)
{
close(fd);
fd = -1;
}
exit(signal);
}
void gddr6_monitor_temperatures(const struct device *devices, int num_devices)
{
(void) argc;
(void) argv;
void *virt_addr;
uint32_t temp;
uint32_t phys_addr;
uint32_t read_result;
uint32_t base_offset;
int num_devs;
char *MEM = "\x2f\x64\x65\x76\x2f\x6d\x65\x6d";
num_devs = pci_detect_dev();
if (num_devs == 0)
{
printf("No compatible GPU found\n.");
exit(-1);
}
for (int i = 0; i < num_devs; i++) {
struct device *device = &devices[i];
printf("Device: %s %s (%s / 0x%04x) pci=%x:%x:%x\n", device->name, device->vram,
device->arch, device->dev_id, device->bus, device->dev, device->func);
}
if ((fd = open(MEM, O_RDONLY)) == -1)
{
printf("Can't read memory. If you are root, enable kernel parameter iomem=relaxed\n");
PRINT_ERROR();
}
cleanup_sig_handler();
while (1)
while (1)
{
printf("\rVRAM Temps: |");
for (int i = 0; i < num_devs; i++) {
struct device *device = &devices[i];
for (int i = 0; i < num_devices; i++)
{
const struct device *device = &devices[i];
phys_addr = (device->bar0 + device->offset);
base_offset = phys_addr & ~(PG_SZ-1);
map_base = mmap(0, PG_SZ, PROT_READ, MAP_SHARED, fd, base_offset);
if(map_base == (void *) -1)
if(map_base == (void *) MAP_FAILED)
{
if (fd != -1)
{
close(fd);
}
printf("Can't read memory. If you are root, enable kernel parameter iomem=relaxed\n");
PRINT_ERROR();
}
@@ -198,6 +140,4 @@ int main(int argc, char **argv)
fflush(stdout);
sleep(1);
}
return 0;
}