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| author | Ben Skeggs <bskeggs@redhat.com> | 2019-05-09 09:48:50 +0300 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2019-05-14 09:58:06 +0300 |
| commit | a2ac09a03d2a0306eb584192b2a5d6c2aeb265ad (patch) | |
| tree | c89dfd693fa8e447d4a928ce2835eb54fc90d450 /drivers/gpu/drm/nouveau/nvkm/engine | |
| parent | a0b694d0af21c9993d1a39a75fd814bd48bf7eb4 (diff) | |
| download | linux-a2ac09a03d2a0306eb584192b2a5d6c2aeb265ad.tar.xz | |
drm/nouveau/core: allow detected chipset to be overridden
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/engine')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/engine/device/base.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c index 7971096b6767..159a9f83c05e 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c @@ -2824,8 +2824,8 @@ nvkm_device_ctor(const struct nvkm_device_func *func, u64 mmio_base, mmio_size; u32 boot0, strap; void __iomem *map; - int ret = -EEXIST; - int i; + int ret = -EEXIST, i; + unsigned chipset; mutex_lock(&nv_devices_mutex); if (nvkm_device_find_locked(handle)) @@ -2870,6 +2870,26 @@ nvkm_device_ctor(const struct nvkm_device_func *func, strap = ioread32_native(map + 0x101000); iounmap(map); + /* chipset can be overridden for devel/testing purposes */ + chipset = nvkm_longopt(device->cfgopt, "NvChipset", 0); + if (chipset) { + u32 override_boot0; + + if (chipset >= 0x10) { + override_boot0 = ((chipset & 0x1ff) << 20); + override_boot0 |= 0x000000a1; + } else { + if (chipset != 0x04) + override_boot0 = 0x20104000; + else + override_boot0 = 0x20004000; + } + + nvdev_warn(device, "CHIPSET OVERRIDE: %08x -> %08x\n", + boot0, override_boot0); + boot0 = override_boot0; + } + /* determine chipset and derive architecture from it */ if ((boot0 & 0x1f000000) > 0) { device->chipset = (boot0 & 0x1ff00000) >> 20; |