From c6e2f9bc0367c0e5c734bf8b3ab1ee097977f1e2 Mon Sep 17 00:00:00 2001 From: Karol Herbst Date: Tue, 15 Sep 2015 18:47:12 +0200 Subject: [PATCH] drm/nouveau/bios/perf: parse the pci speed from the bios for tesla and newer cards Signed-off-by: Karol Herbst --- drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/perf.h | 2 ++ drivers/gpu/drm/nouveau/nvkm/subdev/bios/perf.c | 16 ++++++++++++++++ 2 files changed, 18 insertions(+) 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 7cc2bec..d3bd2501 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 aa7e33b..636bfb6 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 #include #include +#include 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; -- 2.7.4