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drm/nouveau/bios: fix issue shadowing expansion ROMs 

[ Upstream commit 402a89660e ]

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>
5.4-rM2-2.2.x-imx-squashed
Ben Skeggs 2021-01-13 17:12:52 +10:00 committed by Greg Kroah-Hartman
parent f5dc9627ac
commit 8c3d3b385e
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadow.c
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@ -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;
}