From: Karol Herbst <nouveau@karolherbst.de>
Date: Tue, 15 Sep 2015 16:47:12 +0000 (+0200)
Subject: drm/nouveau/bios/perf: parse the pci speed from the bios for tesla and newer cards
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c6e2f9bc0367c0e5c734bf8b3ab1ee097977f1e2;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

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

Signed-off-by: Karol Herbst <nouveau@karolherbst.de>
---

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;