[PATCH AUTOSEL 4.4 3/4] drm/nouveau/bios: fix issue shadowing expansion ROMs

[PATCH AUTOSEL 4.4 3/4] drm/nouveau/bios: fix issue shadowing expansion ROMs

[Sasha Levin]

From: Ben Skeggs <bskeggs@redhat.com>

[ Upstream commit 402a89660e9dc880710b12773076a336c9dab3d7 ]

This issue has generally been covered up by the presence of additional
expansion ROMs after the ones we're interested in, with header fetches
of subsequent images loading enough of the ROM to hide the issue.

Noticed on GA102, which lacks a type 0x70 image compared to TU102,.

[  906.364197] nouveau 0000:09:00.0: bios: 00000000: type 00, 65024 bytes
[  906.381205] nouveau 0000:09:00.0: bios: 0000fe00: type 03, 91648 bytes
[  906.405213] nouveau 0000:09:00.0: bios: 00026400: type e0, 22016 bytes
[  906.410984] nouveau 0000:09:00.0: bios: 0002ba00: type e0, 366080 bytes

vs

[   22.961901] nouveau 0000:09:00.0: bios: 00000000: type 00, 60416 bytes
[   22.984174] nouveau 0000:09:00.0: bios: 0000ec00: type 03, 71168 bytes
[   23.010446] nouveau 0000:09:00.0: bios: 00020200: type e0, 48128 bytes
[   23.028220] nouveau 0000:09:00.0: bios: 0002be00: type e0, 140800 bytes
[   23.080196] nouveau 0000:09:00.0: bios: 0004e400: type 70, 7168 bytes

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadow.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadow.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadow.c
index 7deb81b6dbac6..4b571cc6bc70f 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadow.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadow.c
@@ -75,7 +75,7 @@ shadow_image(struct nvkm_bios *bios, int idx, u32 offset, struct shadow *mthd)
 	nvkm_debug(subdev, "%08x: type %02x, %d bytes\n",
 		   image.base, image.type, image.size);
 
-	if (!shadow_fetch(bios, mthd, image.size)) {
+	if (!shadow_fetch(bios, mthd, image.base + image.size)) {
 		nvkm_debug(subdev, "%08x: fetch failed\n", image.base);
 		return 0;
 	}
-- 
2.27.0

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[PATCH AUTOSEL 4.4 4/4] drm/nouveau/i2c/gm200: increase width of aux semaphore owner fields

[Sasha Levin]

From: Ben Skeggs <bskeggs@redhat.com>

[ Upstream commit ba6e9ab0fcf3d76e3952deb12b5f993991621d9c ]

Noticed while debugging GA102.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxgm204.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxgm204.c b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxgm204.c
index 7cac8fe372b6b..a3cede8df4fd9 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxgm204.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/i2c/auxgm204.c
@@ -33,7 +33,7 @@ static void
 gm204_i2c_aux_fini(struct gm204_i2c_aux *aux)
 {
 	struct nvkm_device *device = aux->base.pad->i2c->subdev.device;
-	nvkm_mask(device, 0x00d954 + (aux->ch * 0x50), 0x00310000, 0x00000000);
+	nvkm_mask(device, 0x00d954 + (aux->ch * 0x50), 0x00710000, 0x00000000);
 }
 
 static int
@@ -54,10 +54,10 @@ gm204_i2c_aux_init(struct gm204_i2c_aux *aux)
 			AUX_ERR(&aux->base, "begin idle timeout %08x", ctrl);
 			return -EBUSY;
 		}
-	} while (ctrl & 0x03010000);
+	} while (ctrl & 0x07010000);
 
 	/* set some magic, and wait up to 1ms for it to appear */
-	nvkm_mask(device, 0x00d954 + (aux->ch * 0x50), 0x00300000, ureq);
+	nvkm_mask(device, 0x00d954 + (aux->ch * 0x50), 0x00700000, ureq);
 	timeout = 1000;
 	do {
 		ctrl = nvkm_rd32(device, 0x00d954 + (aux->ch * 0x50));
@@ -67,7 +67,7 @@ gm204_i2c_aux_init(struct gm204_i2c_aux *aux)
 			gm204_i2c_aux_fini(aux);
 			return -EBUSY;
 		}
-	} while ((ctrl & 0x03000000) != urep);
+	} while ((ctrl & 0x07000000) != urep);
 
 	return 0;
 }
-- 
2.27.0

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