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| author | Ben Skeggs <bskeggs@redhat.com> | 2016-11-08 11:54:24 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2016-11-17 09:50:37 +1000 |
| commit | 920c58a7119bb5d23d21f361a395acb79e693521 (patch) | |
| tree | 05916b06b076efaf67935fb0c507315dffe10afc /drivers/gpu/drm/nouveau | |
| parent | d91ccec63116cb90a95d48ae85a68e892e15c433 (diff) | |
| download | linux-stable-920c58a7119bb5d23d21f361a395acb79e693521.tar.gz linux-stable-920c58a7119bb5d23d21f361a395acb79e693521.tar.bz2 linux-stable-920c58a7119bb5d23d21f361a395acb79e693521.zip | |
drm/nouveau/devinit/gm200: replace while loops with PTIMER-based timeout loops
It appears to be safe to access PTIMER on an unposted board with newer
chipsets.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gm200.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gm200.c b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gm200.c index a410c0db8a08..d749278b4332 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gm200.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gm200.c @@ -26,6 +26,7 @@ #include <subdev/bios.h> #include <subdev/bios/bit.h> #include <subdev/bios/pmu.h> +#include <subdev/timer.h> static void pmu_code(struct nv50_devinit *init, u32 pmu, u32 img, u32 len, bool sec) @@ -128,8 +129,11 @@ gm200_devinit_post(struct nvkm_devinit *base, bool post) nvkm_mask(device, 0x000200, 0x00002000, 0x00000000); nvkm_mask(device, 0x000200, 0x00002000, 0x00002000); nvkm_rd32(device, 0x000200); - while (nvkm_rd32(device, 0x10a10c) & 0x00000006) { - } + if (nvkm_msec(device, 2000, + if (!(nvkm_rd32(device, 0x10a10c) & 0x00000006)) + break; + ) < 0) + return -ETIMEDOUT; } ret = pmu_load(init, 0x04, post, &exec, &args); @@ -156,8 +160,11 @@ gm200_devinit_post(struct nvkm_devinit *base, bool post) if (post) { nvkm_wr32(device, 0x10a040, 0x00005000); pmu_exec(init, exec); - while (!(nvkm_rd32(device, 0x10a040) & 0x00002000)) { - } + if (nvkm_msec(device, 2000, + if (nvkm_rd32(device, 0x10a040) & 0x00002000) + break; + ) < 0) + return -ETIMEDOUT; } /* load and execute some other ucode image (bios therm?) */ |