diff options
| author | Alexandre Courbot <acourbot@nvidia.com> | 2014-02-17 10:17:26 +0400 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2014-03-26 08:08:04 +0400 |
| commit | 420b94697722512a2c0732970dc1530197a49adb (patch) | |
| tree | eb87f8b5ed60beac890dbe34ca884dc84dc6c765 /drivers/gpu/drm/nouveau/nouveau_ttm.c | |
| parent | 0b681687fe9eaa552059030a90897a78fea8f86a (diff) | |
| download | linux-420b94697722512a2c0732970dc1530197a49adb.tar.xz | |
support for platform devices
Upcoming mobile Kepler GPUs (such as GK20A) use the platform bus instead
of PCI to which Nouveau is tightly dependent. This patch allows Nouveau
to handle platform devices by:
- abstracting PCI-dependent functions that were typically used for
resource querying and page mapping,
- introducing a nv_device_is_pci() function that allows to make
PCI-dependent code conditional,
- providing a nouveau_drm_platform_probe() function that takes a GPU
platform device to be probed.
Core code as well as engine/subdev drivers are updated wherever possible
to make use of these functions. Some older drivers are too dependent on
PCI to be properly updated, but all newer code on which future chips may
depend should at least be runnable with platform devices.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_ttm.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_ttm.c | 31 |
1 files changed, 18 insertions, 13 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c index be3a3c9feafa..ab0228f640a5 100644 --- a/drivers/gpu/drm/nouveau/nouveau_ttm.c +++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c @@ -354,21 +354,26 @@ int nouveau_ttm_init(struct nouveau_drm *drm) { struct drm_device *dev = drm->dev; + struct nouveau_device *device = nv_device(drm->device); u32 bits; int ret; bits = nouveau_vmmgr(drm->device)->dma_bits; - if ( drm->agp.stat == ENABLED || - !pci_dma_supported(dev->pdev, DMA_BIT_MASK(bits))) - bits = 32; - - ret = pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(bits)); - if (ret) - return ret; - - ret = pci_set_consistent_dma_mask(dev->pdev, DMA_BIT_MASK(bits)); - if (ret) - pci_set_consistent_dma_mask(dev->pdev, DMA_BIT_MASK(32)); + if (nv_device_is_pci(device)) { + if (drm->agp.stat == ENABLED || + !pci_dma_supported(dev->pdev, DMA_BIT_MASK(bits))) + bits = 32; + + ret = pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(bits)); + if (ret) + return ret; + + ret = pci_set_consistent_dma_mask(dev->pdev, + DMA_BIT_MASK(bits)); + if (ret) + pci_set_consistent_dma_mask(dev->pdev, + DMA_BIT_MASK(32)); + } ret = nouveau_ttm_global_init(drm); if (ret) @@ -396,8 +401,8 @@ nouveau_ttm_init(struct nouveau_drm *drm) return ret; } - drm->ttm.mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 1), - pci_resource_len(dev->pdev, 1)); + drm->ttm.mtrr = arch_phys_wc_add(nv_device_resource_start(device, 1), + nv_device_resource_len(device, 1)); /* GART init */ if (drm->agp.stat != ENABLED) { |