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Diffstat (limited to 'arch/arm/common/dmabounce.c')
-rw-r--r--arch/arm/common/dmabounce.c80
1 files changed, 39 insertions, 41 deletions
diff --git a/arch/arm/common/dmabounce.c b/arch/arm/common/dmabounce.c
index 2744673314b..aecc6c3f908 100644
--- a/arch/arm/common/dmabounce.c
+++ b/arch/arm/common/dmabounce.c
@@ -246,9 +246,9 @@ map_single(struct device *dev, void *ptr, size_t size,
}
dev_dbg(dev,
- "%s: unsafe buffer %p (phy=%p) mapped to %p (phy=%p)\n",
- __func__, buf->ptr, (void *) virt_to_dma(dev, buf->ptr),
- buf->safe, (void *) buf->safe_dma_addr);
+ "%s: unsafe buffer %p (dma=%#x) mapped to %p (dma=%#x)\n",
+ __func__, buf->ptr, virt_to_dma(dev, buf->ptr),
+ buf->safe, buf->safe_dma_addr);
if ((dir == DMA_TO_DEVICE) ||
(dir == DMA_BIDIRECTIONAL)) {
@@ -280,7 +280,7 @@ unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
/*
* Trying to unmap an invalid mapping
*/
- if (dma_mapping_error(dma_addr)) {
+ if (dma_mapping_error(dev, dma_addr)) {
dev_err(dev, "Trying to unmap invalid mapping\n");
return;
}
@@ -292,9 +292,9 @@ unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
BUG_ON(buf->size != size);
dev_dbg(dev,
- "%s: unsafe buffer %p (phy=%p) mapped to %p (phy=%p)\n",
- __func__, buf->ptr, (void *) virt_to_dma(dev, buf->ptr),
- buf->safe, (void *) buf->safe_dma_addr);
+ "%s: unsafe buffer %p (dma=%#x) mapped to %p (dma=%#x)\n",
+ __func__, buf->ptr, virt_to_dma(dev, buf->ptr),
+ buf->safe, buf->safe_dma_addr);
DO_STATS ( device_info->bounce_count++ );
@@ -321,9 +321,8 @@ unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
}
}
-static inline void
-sync_single(struct device *dev, dma_addr_t dma_addr, size_t size,
- enum dma_data_direction dir)
+static int sync_single(struct device *dev, dma_addr_t dma_addr, size_t size,
+ enum dma_data_direction dir)
{
struct dmabounce_device_info *device_info = dev->archdata.dmabounce;
struct safe_buffer *buf = NULL;
@@ -355,9 +354,9 @@ sync_single(struct device *dev, dma_addr_t dma_addr, size_t size,
*/
dev_dbg(dev,
- "%s: unsafe buffer %p (phy=%p) mapped to %p (phy=%p)\n",
- __func__, buf->ptr, (void *) virt_to_dma(dev, buf->ptr),
- buf->safe, (void *) buf->safe_dma_addr);
+ "%s: unsafe buffer %p (dma=%#x) mapped to %p (dma=%#x)\n",
+ __func__, buf->ptr, virt_to_dma(dev, buf->ptr),
+ buf->safe, buf->safe_dma_addr);
DO_STATS ( device_info->bounce_count++ );
@@ -383,8 +382,9 @@ sync_single(struct device *dev, dma_addr_t dma_addr, size_t size,
* No need to sync the safe buffer - it was allocated
* via the coherent allocators.
*/
+ return 0;
} else {
- dma_cache_maint(dma_to_virt(dev, dma_addr), size, dir);
+ return 1;
}
}
@@ -474,25 +474,29 @@ dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nents,
}
}
-void
-dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_addr, size_t size,
- enum dma_data_direction dir)
+void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_addr,
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir)
{
- dev_dbg(dev, "%s(ptr=%p,size=%d,dir=%x)\n",
- __func__, (void *) dma_addr, size, dir);
+ dev_dbg(dev, "%s(dma=%#x,off=%#lx,size=%zx,dir=%x)\n",
+ __func__, dma_addr, offset, size, dir);
- sync_single(dev, dma_addr, size, dir);
+ if (sync_single(dev, dma_addr, offset + size, dir))
+ dma_cache_maint(dma_to_virt(dev, dma_addr) + offset, size, dir);
}
+EXPORT_SYMBOL(dma_sync_single_range_for_cpu);
-void
-dma_sync_single_for_device(struct device *dev, dma_addr_t dma_addr, size_t size,
- enum dma_data_direction dir)
+void dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_addr,
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir)
{
- dev_dbg(dev, "%s(ptr=%p,size=%d,dir=%x)\n",
- __func__, (void *) dma_addr, size, dir);
+ dev_dbg(dev, "%s(dma=%#x,off=%#lx,size=%zx,dir=%x)\n",
+ __func__, dma_addr, offset, size, dir);
- sync_single(dev, dma_addr, size, dir);
+ if (sync_single(dev, dma_addr, offset + size, dir))
+ dma_cache_maint(dma_to_virt(dev, dma_addr) + offset, size, dir);
}
+EXPORT_SYMBOL(dma_sync_single_range_for_device);
void
dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nents,
@@ -554,9 +558,8 @@ dmabounce_register_dev(struct device *dev, unsigned long small_buffer_size,
device_info = kmalloc(sizeof(struct dmabounce_device_info), GFP_ATOMIC);
if (!device_info) {
- printk(KERN_ERR
- "Could not allocated dmabounce_device_info for %s",
- dev->bus_id);
+ dev_err(dev,
+ "Could not allocated dmabounce_device_info\n");
return -ENOMEM;
}
@@ -594,8 +597,7 @@ dmabounce_register_dev(struct device *dev, unsigned long small_buffer_size,
dev->archdata.dmabounce = device_info;
- printk(KERN_INFO "dmabounce: registered device %s on %s bus\n",
- dev->bus_id, dev->bus->name);
+ dev_info(dev, "dmabounce: registered device\n");
return 0;
@@ -614,16 +616,15 @@ dmabounce_unregister_dev(struct device *dev)
dev->archdata.dmabounce = NULL;
if (!device_info) {
- printk(KERN_WARNING
- "%s: Never registered with dmabounce but attempting" \
- "to unregister!\n", dev->bus_id);
+ dev_warn(dev,
+ "Never registered with dmabounce but attempting"
+ "to unregister!\n");
return;
}
if (!list_empty(&device_info->safe_buffers)) {
- printk(KERN_ERR
- "%s: Removing from dmabounce with pending buffers!\n",
- dev->bus_id);
+ dev_err(dev,
+ "Removing from dmabounce with pending buffers!\n");
BUG();
}
@@ -639,8 +640,7 @@ dmabounce_unregister_dev(struct device *dev)
kfree(device_info);
- printk(KERN_INFO "dmabounce: device %s on %s bus unregistered\n",
- dev->bus_id, dev->bus->name);
+ dev_info(dev, "dmabounce: device unregistered\n");
}
@@ -648,8 +648,6 @@ EXPORT_SYMBOL(dma_map_single);
EXPORT_SYMBOL(dma_unmap_single);
EXPORT_SYMBOL(dma_map_sg);
EXPORT_SYMBOL(dma_unmap_sg);
-EXPORT_SYMBOL(dma_sync_single_for_cpu);
-EXPORT_SYMBOL(dma_sync_single_for_device);
EXPORT_SYMBOL(dma_sync_sg_for_cpu);
EXPORT_SYMBOL(dma_sync_sg_for_device);
EXPORT_SYMBOL(dmabounce_register_dev);
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-30 13:26:32 +0000