Commit c6e2f9bc authored by Karol Herbst's avatar Karol Herbst Committed by Ben Skeggs
Browse files

drm/nouveau/bios/perf: parse the pci speed from the bios for tesla and newer cards 



Signed-off-by: default avatarKarol Herbst <nouveau@karolherbst.de>
parent 3aba825f

drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/perf.h

+2 −0
Original line number Diff line number Diff line
@@ -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,

drivers/gpu/drm/nouveau/nvkm/subdev/bios/perf.c

+16 −0
Original line number Diff line number Diff line
@@ -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;