swiotlb: Update is_swiotlb_active to add a struct device argument

Update is_swiotlb_active to add a struct device argument. This will be
useful later to allow for different pools.

Signed-off-by: Claire Chang <tientzu@chromium.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Stefano Stabellini <sstabellini@kernel.org>
Tested-by: Will Deacon <will@kernel.org>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_internal.c b/drivers/gpu/drm/i915/gem/i915_gem_internal.c
index ce6b664..89a8943 100644 (file)
--- a/drivers/gpu/drm/i915/gem/i915_gem_internal.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_internal.c
@@ -42,7 +42,7 @@ static int i915_gem_object_get_pages_internal(struct drm_i915_gem_object *obj)
 
        max_order = MAX_ORDER;
 #ifdef CONFIG_SWIOTLB
-       if (is_swiotlb_active()) {
+       if (is_swiotlb_active(obj->base.dev->dev)) {
                unsigned int max_segment;
 
                max_segment = swiotlb_max_segment();

diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c
index f4c2e46..2ca9d9a 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_ttm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c
@@ -276,7 +276,7 @@ nouveau_ttm_init(struct nouveau_drm *drm)
        }
 
 #if IS_ENABLED(CONFIG_SWIOTLB) && IS_ENABLED(CONFIG_X86)
-       need_swiotlb = is_swiotlb_active();
+       need_swiotlb = is_swiotlb_active(dev->dev);
 #endif
 
        ret = ttm_device_init(&drm->ttm.bdev, &nouveau_bo_driver, drm->dev->dev,

diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c
index b7a8f3a..0d56985 100644 (file)
--- a/drivers/pci/xen-pcifront.c
+++ b/drivers/pci/xen-pcifront.c
@@ -693,7 +693,7 @@ static int pcifront_connect_and_init_dma(struct pcifront_device *pdev)
 
        spin_unlock(&pcifront_dev_lock);
 
-       if (!err && !is_swiotlb_active()) {
+       if (!err && !is_swiotlb_active(&pdev->xdev->dev)) {
                err = pci_xen_swiotlb_init_late();
                if (err)
                        dev_err(&pdev->xdev->dev, "Could not setup SWIOTLB!\n");

diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index d1f3d95..dd1c30a 100644 (file)
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -112,7 +112,7 @@ static inline bool is_swiotlb_buffer(struct device *dev, phys_addr_t paddr)
 void __init swiotlb_exit(void);
 unsigned int swiotlb_max_segment(void);
 size_t swiotlb_max_mapping_size(struct device *dev);
-bool is_swiotlb_active(void);
+bool is_swiotlb_active(struct device *dev);
 void __init swiotlb_adjust_size(unsigned long size);
 #else
 #define swiotlb_force SWIOTLB_NO_FORCE
@@ -132,7 +132,7 @@ static inline size_t swiotlb_max_mapping_size(struct device *dev)
        return SIZE_MAX;
 }
 
-static inline bool is_swiotlb_active(void)
+static inline bool is_swiotlb_active(struct device *dev)
 {
        return false;
 }

diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c
index 84c9feb..7a88c34 100644 (file)
--- a/kernel/dma/direct.c
+++ b/kernel/dma/direct.c
@@ -495,7 +495,7 @@ int dma_direct_supported(struct device *dev, u64 mask)
 size_t dma_direct_max_mapping_size(struct device *dev)
 {
        /* If SWIOTLB is active, use its maximum mapping size */
-       if (is_swiotlb_active() &&
+       if (is_swiotlb_active(dev) &&
            (dma_addressing_limited(dev) || swiotlb_force == SWIOTLB_FORCE))
                return swiotlb_max_mapping_size(dev);
        return SIZE_MAX;

diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index 33d413b..d8677d6 100644 (file)
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -662,9 +662,9 @@ size_t swiotlb_max_mapping_size(struct device *dev)
        return ((size_t)IO_TLB_SIZE) * IO_TLB_SEGSIZE;
 }
 
-bool is_swiotlb_active(void)
+bool is_swiotlb_active(struct device *dev)
 {
-       return io_tlb_default_mem != NULL;
+       return dev->dma_io_tlb_mem != NULL;
 }
 EXPORT_SYMBOL_GPL(is_swiotlb_active);