From fd1496a0fc77f955317d6ca511f66a9e788e7e02 Mon Sep 17 00:00:00 2001 From: Alexandre Courbot Date: Thu, 31 Jul 2014 18:09:42 +0900 Subject: [PATCH] drm/nouveau: map pages using DMA API The DMA API is the recommended way to map pages no matter what the underlying bus is. Use the DMA functions for page mapping and remove currently existing wrappers. Signed-off-by: Alexandre Courbot Acked-by: Daniel Vetter Signed-off-by: Ben Skeggs --- .../gpu/drm/nouveau/core/engine/device/base.c | 25 ------------------- .../drm/nouveau/core/include/core/device.h | 6 ----- drivers/gpu/drm/nouveau/core/subdev/fb/nv50.c | 7 ++++-- drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c | 7 ++++-- drivers/gpu/drm/nouveau/nouveau_bo.c | 22 +++++++++++----- 5 files changed, 26 insertions(+), 41 deletions(-) diff --git a/drivers/gpu/drm/nouveau/core/engine/device/base.c b/drivers/gpu/drm/nouveau/core/engine/device/base.c index 466dda2f7a3a..6c16dabe13b3 100644 --- a/drivers/gpu/drm/nouveau/core/engine/device/base.c +++ b/drivers/gpu/drm/nouveau/core/engine/device/base.c @@ -487,31 +487,6 @@ nv_device_resource_len(struct nouveau_device *device, unsigned int bar) } } -dma_addr_t -nv_device_map_page(struct nouveau_device *device, struct 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) { diff --git a/drivers/gpu/drm/nouveau/core/include/core/device.h b/drivers/gpu/drm/nouveau/core/include/core/device.h index 9ce2ee9aa32e..03c039dcc61f 100644 --- a/drivers/gpu/drm/nouveau/core/include/core/device.h +++ b/drivers/gpu/drm/nouveau/core/include/core/device.h @@ -174,12 +174,6 @@ nv_device_resource_start(struct nouveau_device *device, unsigned int bar); resource_size_t nv_device_resource_len(struct nouveau_device *device, unsigned int bar); -dma_addr_t -nv_device_map_page(struct nouveau_device *device, struct page *page); - -void -nv_device_unmap_page(struct nouveau_device *device, dma_addr_t addr); - int nv_device_get_irq(struct nouveau_device *device, bool stall); diff --git a/drivers/gpu/drm/nouveau/core/subdev/fb/nv50.c b/drivers/gpu/drm/nouveau/core/subdev/fb/nv50.c index 1fc55c1e91a1..7d88e17fa927 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/fb/nv50.c +++ b/drivers/gpu/drm/nouveau/core/subdev/fb/nv50.c @@ -250,7 +250,9 @@ nv50_fb_ctor(struct nouveau_object *parent, struct nouveau_object *engine, priv->r100c08_page = alloc_page(GFP_KERNEL | __GFP_ZERO); if (priv->r100c08_page) { - priv->r100c08 = nv_device_map_page(device, priv->r100c08_page); + priv->r100c08 = dma_map_page(nv_device_base(device), + priv->r100c08_page, 0, PAGE_SIZE, + DMA_BIDIRECTIONAL); if (!priv->r100c08) nv_warn(priv, "failed 0x100c08 page map\n"); } else { @@ -268,7 +270,8 @@ nv50_fb_dtor(struct nouveau_object *object) struct nv50_fb_priv *priv = (void *)object; if (priv->r100c08_page) { - nv_device_unmap_page(device, priv->r100c08); + dma_unmap_page(nv_device_base(device), priv->r100c08, PAGE_SIZE, + DMA_BIDIRECTIONAL); __free_page(priv->r100c08_page); } diff --git a/drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c b/drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c index 0670ae33ee45..9f5f3ac8d4c6 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c +++ b/drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c @@ -70,7 +70,8 @@ nvc0_fb_dtor(struct nouveau_object *object) struct nvc0_fb_priv *priv = (void *)object; if (priv->r100c10_page) { - nv_device_unmap_page(device, priv->r100c10); + dma_unmap_page(nv_device_base(device), priv->r100c10, PAGE_SIZE, + DMA_BIDIRECTIONAL); __free_page(priv->r100c10_page); } @@ -93,7 +94,9 @@ 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 = nv_device_map_page(device, priv->r100c10_page); + priv->r100c10 = dma_map_page(nv_device_base(device), + priv->r100c10_page, 0, PAGE_SIZE, + DMA_BIDIRECTIONAL); if (!priv->r100c10) return -EFAULT; } diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index d349078123bd..a405b75a90d9 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -1340,6 +1340,7 @@ nouveau_ttm_tt_populate(struct ttm_tt *ttm) struct nouveau_drm *drm; struct nouveau_device *device; struct drm_device *dev; + struct device *pdev; unsigned i; int r; bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG); @@ -1358,6 +1359,7 @@ nouveau_ttm_tt_populate(struct ttm_tt *ttm) drm = nouveau_bdev(ttm->bdev); device = nv_device(drm->device); dev = drm->dev; + pdev = nv_device_base(device); #if __OS_HAS_AGP if (drm->agp.stat == ENABLED) { @@ -1377,17 +1379,22 @@ nouveau_ttm_tt_populate(struct ttm_tt *ttm) } for (i = 0; i < ttm->num_pages; i++) { - ttm_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 0; } @@ -1399,6 +1406,7 @@ nouveau_ttm_tt_unpopulate(struct ttm_tt *ttm) struct nouveau_drm *drm; struct nouveau_device *device; struct drm_device *dev; + struct device *pdev; unsigned i; bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG); @@ -1408,6 +1416,7 @@ nouveau_ttm_tt_unpopulate(struct ttm_tt *ttm) drm = nouveau_bdev(ttm->bdev); device = nv_device(drm->device); dev = drm->dev; + pdev = nv_device_base(device); #if __OS_HAS_AGP if (drm->agp.stat == ENABLED) { @@ -1425,7 +1434,8 @@ nouveau_ttm_tt_unpopulate(struct ttm_tt *ttm) for (i = 0; i < ttm->num_pages; i++) { if (ttm_dma->dma_address[i]) { - nv_device_unmap_page(device, ttm_dma->dma_address[i]); + dma_unmap_page(pdev, ttm_dma->dma_address[i], PAGE_SIZE, + DMA_BIDIRECTIONAL); } } -- 2.20.1