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merge into: Franscobec:master
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Franscobec:master Franscobec:add-rtx5090-gddr7 Franscobec:feat/vram-and-hotspot
...
pull from: Franscobec:feat/vram-and-hotspot
Branches Tags
Franscobec:master Franscobec:add-rtx5090-gddr7 Franscobec:feat/vram-and-hotspot

2 Commits
master ... feat/vram-

Author SHA1 Message Date
Ole Algoritme
35a446ea12 merge master 2025-04-25 13:54:25 +02:00
Ole Algoritme
136fed6ecf added GPU hotspot temp as mentioned in #32 2025-04-18 13:02:15 +02:00
2 changed files with 69 additions and 26 deletions
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4
lib/include/gddr6.h
View File

@@ -9,13 +9,17 @@ struct device
uint32_t bar0; uint32_t bar0;
uint8_t bus, dev, func; uint8_t bus, dev, func;
uint32_t offset; uint32_t offset;
uint32_t hotspot_offset;
uint16_t dev_id; uint16_t dev_id;
const char *vram; const char *vram;
const char *arch; const char *arch;
const char *name; const char *name;
void *mapped_addr; void *mapped_addr;
void *hotspot_mapped_addr;
uint32_t phys_addr; uint32_t phys_addr;
uint32_t hotspot_phys_addr;
uint32_t base_offset; uint32_t base_offset;
uint32_t hotspot_base_offset;
}; };
struct gddr6_ctx { struct gddr6_ctx {

89
lib/src/gddr6.c
View File

@@ -25,30 +25,30 @@
struct gddr6_ctx ctx = {0}; struct gddr6_ctx ctx = {0};
struct device dev_table[] = struct device dev_table[] =
{ {
{ .offset = 0x0000E2A8, .dev_id = 0x2684, .vram = "GDDR6X", .arch = "AD102", .name = "RTX 4090" }, { .offset = 0x0000E2A8, .hotspot_offset = 0x0002046C, .dev_id = 0x2684, .vram = "GDDR6X", .arch = "AD102", .name = "RTX 4090" },
{ .offset = 0x0000E2A8, .dev_id = 0x2685, .vram = "GDDR6X", .arch = "AD102", .name = "RTX 4090 D" }, { .offset = 0x0000E2A8, .hotspot_offset = 0x0002046C, .dev_id = 0x2685, .vram = "GDDR6X", .arch = "AD102", .name = "RTX 4090 D" },
{ .offset = 0x0000E2A8, .dev_id = 0x2702, .vram = "GDDR6X", .arch = "AD103", .name = "RTX 4080 Super" }, { .offset = 0x0000E2A8, .hotspot_offset = 0x0002046C, .dev_id = 0x2702, .vram = "GDDR6X", .arch = "AD103", .name = "RTX 4080 Super" },
{ .offset = 0x0000E2A8, .dev_id = 0x2704, .vram = "GDDR6X", .arch = "AD103", .name = "RTX 4080" }, { .offset = 0x0000E2A8, .hotspot_offset = 0x0002046C, .dev_id = 0x2704, .vram = "GDDR6X", .arch = "AD103", .name = "RTX 4080" },
{ .offset = 0x0000E2A8, .dev_id = 0x2705, .vram = "GDDR6X", .arch = "AD103", .name = "RTX 4070 Ti Super" }, { .offset = 0x0000E2A8, .hotspot_offset = 0x0002046C, .dev_id = 0x2705, .vram = "GDDR6X", .arch = "AD103", .name = "RTX 4070 Ti Super" },
{ .offset = 0x0000E2A8, .dev_id = 0x2782, .vram = "GDDR6X", .arch = "AD104", .name = "RTX 4070 Ti" }, { .offset = 0x0000E2A8, .hotspot_offset = 0x0002046C, .dev_id = 0x2782, .vram = "GDDR6X", .arch = "AD104", .name = "RTX 4070 Ti" },
{ .offset = 0x0000E2A8, .dev_id = 0x2783, .vram = "GDDR6X", .arch = "AD104", .name = "RTX 4070 Super" }, { .offset = 0x0000E2A8, .hotspot_offset = 0x0002046C, .dev_id = 0x2783, .vram = "GDDR6X", .arch = "AD104", .name = "RTX 4070 Super" },
{ .offset = 0x0000E2A8, .dev_id = 0x2786, .vram = "GDDR6X", .arch = "AD104", .name = "RTX 4070" }, { .offset = 0x0000E2A8, .hotspot_offset = 0x0002046C, .dev_id = 0x2786, .vram = "GDDR6X", .arch = "AD104", .name = "RTX 4070" },
{ .offset = 0x0000E2A8, .dev_id = 0x2860, .vram = "GDDR6", .arch = "AD106", .name = "RTX 4070 Max-Q / Mobile" }, { .offset = 0x0000E2A8, .hotspot_offset = 0x0002046C, .dev_id = 0x2860, .vram = "GDDR6", .arch = "AD106", .name = "RTX 4070 Max-Q / Mobile" },
{ .offset = 0x0000E2A8, .dev_id = 0x2203, .vram = "GDDR6X", .arch = "GA102", .name = "RTX 3090 Ti" }, { .offset = 0x0000E2A8, .hotspot_offset = 0x0002046C, .dev_id = 0x2203, .vram = "GDDR6X", .arch = "GA102", .name = "RTX 3090 Ti" },
{ .offset = 0x0000E2A8, .dev_id = 0x2204, .vram = "GDDR6X", .arch = "GA102", .name = "RTX 3090" }, { .offset = 0x0000E2A8, .hotspot_offset = 0x0002046C, .dev_id = 0x2204, .vram = "GDDR6X", .arch = "GA102", .name = "RTX 3090" },
{ .offset = 0x0000E2A8, .dev_id = 0x2208, .vram = "GDDR6X", .arch = "GA102", .name = "RTX 3080 Ti" }, { .offset = 0x0000E2A8, .hotspot_offset = 0x0002046C, .dev_id = 0x2208, .vram = "GDDR6X", .arch = "GA102", .name = "RTX 3080 Ti" },
{ .offset = 0x0000E2A8, .dev_id = 0x2206, .vram = "GDDR6X", .arch = "GA102", .name = "RTX 3080" }, { .offset = 0x0000E2A8, .hotspot_offset = 0x0002046C, .dev_id = 0x2206, .vram = "GDDR6X", .arch = "GA102", .name = "RTX 3080" },
{ .offset = 0x0000E2A8, .dev_id = 0x2216, .vram = "GDDR6X", .arch = "GA102", .name = "RTX 3080 LHR" }, { .offset = 0x0000E2A8, .hotspot_offset = 0x0002046C, .dev_id = 0x2216, .vram = "GDDR6X", .arch = "GA102", .name = "RTX 3080 LHR" },
{ .offset = 0x0000EE50, .dev_id = 0x2484, .vram = "GDDR6", .arch = "GA104", .name = "RTX 3070" }, { .offset = 0x0000EE50, .hotspot_offset = 0x0002046C, .dev_id = 0x2484, .vram = "GDDR6", .arch = "GA104", .name = "RTX 3070" },
{ .offset = 0x0000EE50, .dev_id = 0x2488, .vram = "GDDR6", .arch = "GA104", .name = "RTX 3070 LHR" }, { .offset = 0x0000EE50, .hotspot_offset = 0x0002046C, .dev_id = 0x2488, .vram = "GDDR6", .arch = "GA104", .name = "RTX 3070 LHR" },
{ .offset = 0x0000E2A8, .dev_id = 0x2531, .vram = "GDDR6", .arch = "GA106", .name = "RTX A2000" }, { .offset = 0x0000E2A8, .hotspot_offset = 0x0002046C, .dev_id = 0x2531, .vram = "GDDR6", .arch = "GA106", .name = "RTX A2000" },
{ .offset = 0x0000E2A8, .dev_id = 0x2571, .vram = "GDDR6", .arch = "GA106", .name = "RTX A2000" }, { .offset = 0x0000E2A8, .hotspot_offset = 0x0002046C, .dev_id = 0x2571, .vram = "GDDR6", .arch = "GA106", .name = "RTX A2000" },
{ .offset = 0x0000E2A8, .dev_id = 0x2232, .vram = "GDDR6", .arch = "GA102", .name = "RTX A4500" }, { .offset = 0x0000E2A8, .hotspot_offset = 0x0002046C, .dev_id = 0x2232, .vram = "GDDR6", .arch = "GA102", .name = "RTX A4500" },
{ .offset = 0x0000E2A8, .dev_id = 0x2231, .vram = "GDDR6", .arch = "GA102", .name = "RTX A5000" }, { .offset = 0x0000E2A8, .hotspot_offset = 0x0002046C, .dev_id = 0x2231, .vram = "GDDR6", .arch = "GA102", .name = "RTX A5000" },
{ .offset = 0x0000E2A8, .dev_id = 0x26B1, .vram = "GDDR6", .arch = "AD102", .name = "RTX A6000" }, { .offset = 0x0000E2A8, .hotspot_offset = 0x0002046C, .dev_id = 0x26B1, .vram = "GDDR6", .arch = "AD102", .name = "RTX A6000" },
{ .offset = 0x0000E2A8, .dev_id = 0x27b8, .vram = "GDDR6", .arch = "AD104", .name = "L4" }, { .offset = 0x0000E2A8, .hotspot_offset = 0x0002046C, .dev_id = 0x27b8, .vram = "GDDR6", .arch = "AD104", .name = "L4" },
{ .offset = 0x0000E2A8, .dev_id = 0x26b9, .vram = "GDDR6", .arch = "AD102", .name = "L40S" }, { .offset = 0x0000E2A8, .hotspot_offset = 0x0002046C, .dev_id = 0x26b9, .vram = "GDDR6", .arch = "AD102", .name = "L40S" },
{ .offset = 0x0000E2A8, .dev_id = 0x2236, .vram = "GDDR6", .arch = "GA102", .name = "A10" }, { .offset = 0x0000E2A8, .hotspot_offset = 0x0002046C, .dev_id = 0x2236, .vram = "GDDR6", .arch = "GA102", .name = "A10" },
}; };
void gddr6_init(void) void gddr6_init(void)
@@ -108,6 +108,7 @@ void gddr6_memory_map(void)
{ {
for (uint32_t i = 0; i < ctx.num_devices; i++) for (uint32_t i = 0; i < ctx.num_devices; i++)
{ {
// Map VRAM temperature sensor
ctx.devices[i].phys_addr = (ctx.devices[i].bar0 + ctx.devices[i].offset); ctx.devices[i].phys_addr = (ctx.devices[i].bar0 + ctx.devices[i].offset);
ctx.devices[i].base_offset = ctx.devices[i].phys_addr & ~(PG_SZ - 1); ctx.devices[i].base_offset = ctx.devices[i].phys_addr & ~(PG_SZ - 1);
@@ -122,13 +123,25 @@ void gddr6_memory_map(void)
printf("Device: %s %s (%s / 0x%04x) pci=%x:%x:%x\n", ctx.devices[i].name, ctx.devices[i].vram, printf("Device: %s %s (%s / 0x%04x) pci=%x:%x:%x\n", ctx.devices[i].name, ctx.devices[i].vram,
ctx.devices[i].arch, ctx.devices[i].dev_id, ctx.devices[i].bus, ctx.devices[i].dev, ctx.devices[i].func); ctx.devices[i].arch, ctx.devices[i].dev_id, ctx.devices[i].bus, ctx.devices[i].dev, ctx.devices[i].func);
} }
ctx.devices[i].hotspot_phys_addr = (ctx.devices[i].bar0 + ctx.devices[i].hotspot_offset);
ctx.devices[i].hotspot_base_offset = ctx.devices[i].hotspot_phys_addr & ~(PG_SZ - 1);
ctx.devices[i].hotspot_mapped_addr = mmap(0, PG_SZ, PROT_READ, MAP_SHARED, ctx.fd, ctx.devices[i].hotspot_base_offset);
if (ctx.devices[i].hotspot_mapped_addr == MAP_FAILED)
{
ctx.devices[i].hotspot_mapped_addr = NULL;
fprintf(stderr, "Hotspot memory mapping failed for pci=%x:%x:%x\n", ctx.devices[i].bus, ctx.devices[i].dev, ctx.devices[i].func);
}
} }
} }
void gddr6_monitor_temperatures(void) void gddr6_monitor_temperatures(void)
{ {
while (1) { while (1) {
printf("\rVRAM Temps: |"); printf("\r");
printf("VRAM Temp: |");
for (uint32_t i = 0; i < ctx.num_devices; i++) for (uint32_t i = 0; i < ctx.num_devices; i++)
{ {
if (ctx.devices[i].mapped_addr == NULL || ctx.devices[i].mapped_addr == MAP_FAILED) if (ctx.devices[i].mapped_addr == NULL || ctx.devices[i].mapped_addr == MAP_FAILED)
@@ -142,6 +155,24 @@ void gddr6_monitor_temperatures(void)
printf(" %3u°C |", temp); printf(" %3u°C |", temp);
} }
printf(" GPU Hotspot: |");
for (uint32_t i = 0; i < ctx.num_devices; i++)
{
if (ctx.devices[i].hotspot_mapped_addr == NULL || ctx.devices[i].hotspot_mapped_addr == MAP_FAILED)
{
printf(" N/A |");
continue;
}
void *hotspot_virt_addr = (uint8_t *) ctx.devices[i].hotspot_mapped_addr +
(ctx.devices[i].hotspot_phys_addr - ctx.devices[i].hotspot_base_offset);
uint32_t hotspot_read_result = *((uint32_t *)hotspot_virt_addr);
uint32_t hotspot_temp = (hotspot_read_result >> 8) & 0xff;
printf(" %3u°C |", hotspot_temp);
}
fflush(stdout); fflush(stdout);
sleep(1); sleep(1);
} }
@@ -156,12 +187,20 @@ void gddr6_cleanup(int signal)
munmap(ctx.devices[i].mapped_addr, PG_SZ); munmap(ctx.devices[i].mapped_addr, PG_SZ);
ctx.devices[i].mapped_addr = NULL; ctx.devices[i].mapped_addr = NULL;
} }
if (ctx.devices[i].hotspot_mapped_addr != NULL && ctx.devices[i].hotspot_mapped_addr != MAP_FAILED)
{
munmap(ctx.devices[i].hotspot_mapped_addr, PG_SZ);
ctx.devices[i].hotspot_mapped_addr = NULL;
} }
}
if (ctx.fd != -1) if (ctx.fd != -1)
{ {
close(ctx.fd); close(ctx.fd);
ctx.fd = -1; ctx.fd = -1;
} }
if (ctx.devices) if (ctx.devices)
{ {
free(ctx.devices); free(ctx.devices);