search for: nv_device_unmap_pag

..._dma->dma_address[i] = nv_device_map_page(device, - ttm->pages[i]); - if (!ttm_dma->dma_address[i]) { + dma_addr_t addr; + + addr = dma_map_page(pdev, ttm->pages[i], 0, PAGE_SIZE, + DMA_BIDIRECTIONAL); + + if (dma_mapping_error(pdev, addr)) { while (--i) { - nv_device_unmap_page(device, - ttm_dma->dma_address[i]); + dma_unmap_page(pdev, ttm_dma->dma_address[i], + PAGE_SIZE, DMA_BIDIRECTIONAL); ttm_dma->dma_address[i] = 0; } ttm_pool_unpopulate(ttm); return -EFAULT; } + + ttm_dma->dma_address[i] = addr; } return...

...e, > - ttm->pages[i]); > - if (!ttm_dma->dma_address[i]) { > + dma_addr_t addr; > + > + addr = dma_map_page(pdev, ttm->pages[i], 0, PAGE_SIZE, > + DMA_BIDIRECTIONAL); > + > + if (dma_mapping_error(pdev, addr)) { > while (--i) { > - nv_device_unmap_page(device, > - ttm_dma->dma_address[i]); > + dma_unmap_page(pdev, ttm_dma->dma_address[i], > + PAGE_SIZE, DMA_BIDIRECTIONAL); > ttm_dma->dma_address[i] = 0; > } > ttm_pool_unpopulate(ttm); > return -EFAULT; > } > + > +...

...t; - ret = page_to_phys(page); > + ret = dma_map_page(&device->platformdev->dev, page, 0, > + PAGE_SIZE, DMA_BIDIRECTIONAL); > + if (dma_mapping_error(&device->platformdev->dev, ret)) > + ret = 0; > } > > return ret; > @@ -501,6 +504,9 @@ nv_device_unmap_page(struct nouveau_device *device, dma_addr_t addr) > if (nv_device_is_pci(device)) > pci_unmap_page(device->pdev, addr, PAGE_SIZE, > PCI_DMA_BIDIRECTIONAL); pci_map/unmap alias to dma_unmap/map when called on the underlying struct device embedded in pci_device (like for p...

...uct page *page) { + dma_addr_t ret; + + if (nv_device_is_pci(device)) { + ret = pci_map_page(device->pdev, page, 0, PAGE_SIZE, + PCI_DMA_BIDIRECTIONAL); + if (pci_dma_mapping_error(device->pdev, ret)) + ret = 0; + } else { + ret = page_to_phys(page); + } + + return ret; +} + +void +nv_device_unmap_page(struct nouveau_device *device, dma_addr_t addr) +{ + if (nv_device_is_pci(device)) + pci_unmap_page(device->pdev, addr, PAGE_SIZE, + PCI_DMA_BIDIRECTIONAL); +} + static struct nouveau_oclass nouveau_device_oclass = { .handle = NV_ENGINE(DEVICE, 0x00), diff --git a/drivers/gpu/drm/...

...ct page *page) +{ + dma_addr_t ret; + + if (nv_device_is_pci(device)) { + ret = pci_map_page(device->pdev, page, 0, PAGE_SIZE, + PCI_DMA_BIDIRECTIONAL); + if (pci_dma_mapping_error(device->pdev, ret)) + ret = 0; + } else { + ret = page_to_phys(page); + } + + return ret; +} + +void +nv_device_unmap_page(struct nouveau_device *device, dma_addr_t addr) +{ + if (nv_device_is_pci(device)) + pci_unmap_page(device->pdev, addr, PAGE_SIZE, + PCI_DMA_BIDIRECTIONAL); +} + +int +nv_device_get_irq(struct nouveau_device *device, bool stall) +{ + if (nv_device_is_pci(device)) { + return device-&g...

...PAGE_SIZE, DMA_BIDIRECTIONAL); >>> + if (dma_mapping_error(&device->platformdev->dev, ret)) >>> + ret = 0; >>> } >>> >>> return ret; >>> @@ -501,6 +504,9 @@ nv_device_unmap_page(struct nouveau_device *device, >>> dma_addr_t addr) >>> if (nv_device_is_pci(device)) >>> pci_unmap_page(device->pdev, addr, PAGE_SIZE, >>> PCI_DMA_BIDIRECTIONAL); >> >> >> pci_map/unmap...

...c0.c +++ b/drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c @@ -70,8 +70,7 @@ nvc0_fb_dtor(struct nouveau_object *object) struct nvc0_fb_priv *priv = (void *)object; if (priv->r100c10_page) { - pci_unmap_page(device->pdev, priv->r100c10, PAGE_SIZE, - PCI_DMA_BIDIRECTIONAL); + nv_device_unmap_page(device, priv->r100c10); __free_page(priv->r100c10_page); } @@ -94,10 +93,8 @@ nvc0_fb_ctor(struct nouveau_object *parent, struct nouveau_object *engine, priv->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO); if (priv->r100c10_page) { - priv->r100c10 = pci_map_page(d...

...ce->pdev, ret)) ret = 0; } else { - ret = page_to_phys(page); + ret = dma_map_page(&device->platformdev->dev, page, 0, + PAGE_SIZE, DMA_BIDIRECTIONAL); + if (dma_mapping_error(&device->platformdev->dev, ret)) + ret = 0; } return ret; @@ -501,6 +504,9 @@ nv_device_unmap_page(struct nouveau_device *device, dma_addr_t addr) if (nv_device_is_pci(device)) pci_unmap_page(device->pdev, addr, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); + else + dma_unmap_page(&device->platformdev->dev, addr, + PAGE_SIZE, DMA_BIDIRECTIONAL); } int -- 2.0.0

On 12/02/14 05:38, Alexandre Courbot wrote: > 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()

...>> + ret = dma_map_page(&device->platformdev->dev, page, 0, >> + PAGE_SIZE, DMA_BIDIRECTIONAL); >> + if (dma_mapping_error(&device->platformdev->dev, ret)) >> + ret = 0; >> } >> >> return ret; >> @@ -501,6 +504,9 @@ nv_device_unmap_page(struct nouveau_device *device, dma_addr_t addr) >> if (nv_device_is_pci(device)) >> pci_unmap_page(device->pdev, addr, PAGE_SIZE, >> PCI_DMA_BIDIRECTIONAL); > > pci_map/unmap alias to dma_unmap/map when called on the underlying struct > device embed...

On Mon, Feb 10, 2014 at 8:50 PM, Thierry Reding <thierry.reding at gmail.com> wrote: > On Mon, Feb 10, 2014 at 02:53:00PM +0900, Alexandre Courbot wrote: > [...] >> diff --git a/drivers/gpu/drm/nouveau/core/engine/device/base.c b/drivers/gpu/drm/nouveau/core/engine/device/base.c > [...] >> +resource_size_t >> +nv_device_resource_start(struct nouveau_device *device,

...ct page *page) +{ + dma_addr_t ret; + + if (nv_device_is_pci(device)) { + ret = pci_map_page(device->pdev, page, 0, PAGE_SIZE, + PCI_DMA_BIDIRECTIONAL); + if (pci_dma_mapping_error(device->pdev, ret)) + ret = 0; + } else { + ret = page_to_phys(page); + } + + return ret; +} + +void +nv_device_unmap_page(struct nouveau_device *device, dma_addr_t addr) +{ + if (nv_device_is_pci(device)) + pci_unmap_page(device->pdev, addr, PAGE_SIZE, + PCI_DMA_BIDIRECTIONAL); +} + +int +nv_device_get_irq(struct nouveau_device *device, bool stall) +{ + if (nv_device_is_pci(device)) { + return device-&g...

...PAGE_SIZE, DMA_BIDIRECTIONAL); >>>> + if (dma_mapping_error(&device->platformdev->dev, ret)) >>>> + ret = 0; >>>> } >>>> >>>> return ret; >>>> @@ -501,6 +504,9 @@ nv_device_unmap_page(struct nouveau_device *device, >>>> dma_addr_t addr) >>>> if (nv_device_is_pci(device)) >>>> pci_unmap_page(device->pdev, addr, PAGE_SIZE, >>>> PCI_DMA_BIDIRECTIONAL); >>> >>...

Another revision of this patchset critical for GK20A to operate. Previous attempts were exclusively using either TTM's regular page allocator or the DMA API one. Both have their advantages and drawbacks: the page allocator is fast but requires explicit synchronization on non-coherent architectures, whereas the DMA allocator always returns coherent memory, but is also slower, creates a

Hello everyone, GK20A is the Kepler-based GPU used in the upcoming Tegra K1 chips. The following patches perform architectural changes to Nouveau that are necessary to support non-PCI GPUs and add initial support for GK20A. Although the support is still very basic and more user-space changes will be needed to make the full graphics stack run on top of it, we were able to successfully open