diff options
| author | Karol Herbst <nouveau@karolherbst.de> | 2015-09-15 18:47:12 +0200 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2016-01-11 02:30:22 +0100 |
| commit | c6e2f9bc0367c0e5c734bf8b3ab1ee097977f1e2 (patch) | |
| tree | 8a79e7bf6457431b306f9a14deae46261138e75b | |
| parent | drm/nouveau/pci: implement pcie speed change for kepler+ (diff) | |
| download | linux-c6e2f9bc0367c0e5c734bf8b3ab1ee097977f1e2.tar.xz linux-c6e2f9bc0367c0e5c734bf8b3ab1ee097977f1e2.zip | |
drm/nouveau/bios/perf: parse the pci speed from the bios for tesla and newer cards
Signed-off-by: Karol Herbst <nouveau@karolherbst.de>
| -rw-r--r-- | drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/perf.h | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/bios/perf.c | 16 |
2 files changed, 18 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/perf.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/perf.h index 7cc2becabc69..d3bd250103d5 100644 --- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/perf.h +++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/perf.h @@ -13,6 +13,8 @@ struct nvbios_perfE { u32 vdec; u32 disp; u32 script; + u8 pcie_speed; + u8 pcie_width; }; u16 nvbios_perf_entry(struct nvkm_bios *, int idx, diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/perf.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/perf.c index aa7e33b42b30..636bfb665bb9 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/perf.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/perf.c @@ -24,6 +24,7 @@ #include <subdev/bios.h> #include <subdev/bios/bit.h> #include <subdev/bios/perf.h> +#include <subdev/pci.h> u16 nvbios_perf_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, @@ -145,6 +146,21 @@ nvbios_perfEp(struct nvkm_bios *bios, int idx, break; case 0x40: info->voltage = nvbios_rd08(bios, perf + 0x02); + switch (nvbios_rd08(bios, perf + 0xb) & 0x3) { + case 0: + info->pcie_speed = NVKM_PCIE_SPEED_5_0; + break; + case 3: + case 1: + info->pcie_speed = NVKM_PCIE_SPEED_2_5; + break; + case 2: + info->pcie_speed = NVKM_PCIE_SPEED_8_0; + break; + default: + break; + } + info->pcie_width = 0xff; break; default: return 0x0000; |