diff --git a/gddr6.c b/gddr6.c index 282094f..fb43092 100644 --- a/gddr6.c +++ b/gddr6.c @@ -8,7 +8,7 @@ #include #include -#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); \ @@ -19,15 +19,17 @@ struct device uint32_t bar0; uint32_t offset; uint16_t dev_id; + const char *vram; const char *arch; const char *name; }; -static struct device devices[] = { - { .bar0 = 0xEC000000, .offset = 0x0000E2A8, .dev_id = 0x2684, .arch = "AD102", .name = "RTX 4090" }, - { .bar0 = 0xFB000000, .offset = 0x0000E2A8, .dev_id = 0x2204, .arch = "GA102", .name = "RTX 3090" }, - { .bar0 = 0xFB000000, .offset = 0x0000EE50, .dev_id = 0x2484, .arch = "GA104", .name = "RTX 3070" }, - { .bar0 = 0xFB000000, .offset = 0x0000EE50, .dev_id = 0x2488, .arch = "GA104", .name = "RTX 3070-LHR" }, +static struct device dev_table[] = +{ + { .bar0 = 0xEC000000, .offset = 0x0000E2A8, .dev_id = 0x2684, .vram = "GDDR6X", .arch = "AD102", .name = "RTX 4090" }, + { .bar0 = 0xFB000000, .offset = 0x0000E2A8, .dev_id = 0x2204, .vram = "GDDR6X", .arch = "GA102", .name = "RTX 3090" }, + { .bar0 = 0xFB000000, .offset = 0x0000EE50, .dev_id = 0x2484, .vram = "GDDR6", .arch = "GA104", .name = "RTX 3070" }, + { .bar0 = 0xFB000000, .offset = 0x0000EE50, .dev_id = 0x2488, .vram = "GDDR6", .arch = "GA104", .name = "RTX 3070-LHR" }, }; struct device * pci_detect_dev() @@ -35,17 +37,29 @@ struct device * pci_detect_dev() struct pci_access *pacc = NULL; struct pci_dev *dev = NULL; struct device *device = NULL; + ssize_t dev_table_size = (sizeof(dev_table)/sizeof(struct device)); pacc = pci_alloc(); pci_init(pacc); pci_scan_bus(pacc); - for (dev = pacc->devices; dev; dev = dev->next) { + for (dev = pacc->devices; dev; dev = dev->next) + { pci_fill_info(dev, PCI_FILL_IDENT | PCI_FILL_BASES | PCI_FILL_CLASS); - for (uint32_t i = 0; i < 3; i++) { - if (dev->device_id == devices[i].dev_id) { - device = &devices[i]; - } + + for (uint32_t i = 0; i < dev_table_size; i++) + { + if (dev->device_id == dev_table[i].dev_id) + { + device = &dev_table[i]; + + if (dev->base_addr[0] != device->bar0) + { + device->bar0 = dev->base_addr[0]; + } + + break; + } } } @@ -56,49 +70,57 @@ struct device * pci_detect_dev() int main(int argc, char **argv) { int fd; - int map_size = 4096UL; - void *map_base, *virt_addr; - uint32_t read_result, base_offset, temp; - uint32_t offset; + void *map_base; + void *virt_addr; + uint32_t temp; + uint32_t phys_addr; + uint32_t read_result; + uint32_t base_offset; + uint32_t map_size = 0x1000; struct device *device = NULL; - - char *MEM_RES = "\x2f\x64\x65\x76\x2f\x6d\x65\x6d"; + char *MEM = "\x2f\x64\x65\x76\x2f\x6d\x65\x6d"; device = pci_detect_dev(); - offset = device->bar0 + device->offset; + phys_addr = device->bar0 + device->offset; - if (device == NULL) { - printf("No compatible devices device. \n"); - exit(-1); + if (device == NULL) + { + printf("No compatible devices device. \n"); + exit(-1); } - printf("Device: %s (%s / 0x%04x) \n", device->name, device->arch, device->dev_id); + printf("Device: %s (%s / 0x%04x)\n", device->name, device->arch, device->dev_id); - while (1) { - if ((fd = open(MEM_RES, O_RDWR | O_SYNC)) == -1) { - printf("Can't read memory. Are you r00t?\n"); - exit(-1); - } + if ((fd = open(MEM, O_RDWR | O_SYNC)) == -1) + { + printf("Can't read memory. If you are root, enable kernel parameter iomem=relaxed\n"); + PRINT_ERROR(); + } - base_offset = offset & ~(sysconf(_SC_PAGE_SIZE)-1); - map_base = mmap(0, map_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, base_offset); + base_offset = phys_addr & ~(sysconf(_SC_PAGE_SIZE)-1); + map_base = mmap(0, map_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, base_offset); - if(map_base == (void *) -1) - PRINT_ERROR; + if(map_base == (void *) -1) + { + close(fd); + PRINT_ERROR(); + } - virt_addr = map_base + offset - base_offset; + while (1) + { + virt_addr = (map_base + (phys_addr - base_offset)); read_result = *((uint32_t *) virt_addr); - temp = (read_result & 0x00000fff) / 0x20; - printf("\rGDDR6X VRAM Temp: %d°c", temp); + + temp = ((read_result & 0x00000fff) / 0x20); + + printf("\r%s VRAM Temp: %d°c", device->vram, temp); fflush(stdout); - if (munmap(map_base, map_size) == -1) { - printf("Can't unmap memory!\n"); - exit(-1); - } - - close(fd); sleep(1); } + + munmap(map_base, map_size); + close(fd); + return 0; }