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path: root/arch/ia64/sn/pci/pcibr/pcibr_dma.c
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Diffstat (limited to 'arch/ia64/sn/pci/pcibr/pcibr_dma.c')
-rw-r--r--arch/ia64/sn/pci/pcibr/pcibr_dma.c103
1 files changed, 51 insertions, 52 deletions
diff --git a/arch/ia64/sn/pci/pcibr/pcibr_dma.c b/arch/ia64/sn/pci/pcibr/pcibr_dma.c
index b1d66ac..3c305f4 100644
--- a/arch/ia64/sn/pci/pcibr/pcibr_dma.c
+++ b/arch/ia64/sn/pci/pcibr/pcibr_dma.c
@@ -40,7 +40,7 @@ extern int sn_ioif_inited;
* we do not have to allocate entries in the PMU.
*/
-static uint64_t
+static dma_addr_t
pcibr_dmamap_ate32(struct pcidev_info *info,
uint64_t paddr, size_t req_size, uint64_t flags)
{
@@ -109,7 +109,7 @@ pcibr_dmamap_ate32(struct pcidev_info *info,
return pci_addr;
}
-static uint64_t
+static dma_addr_t
pcibr_dmatrans_direct64(struct pcidev_info * info, uint64_t paddr,
uint64_t dma_attributes)
{
@@ -141,7 +141,7 @@ pcibr_dmatrans_direct64(struct pcidev_info * info, uint64_t paddr,
}
-static uint64_t
+static dma_addr_t
pcibr_dmatrans_direct32(struct pcidev_info * info,
uint64_t paddr, size_t req_size, uint64_t flags)
{
@@ -180,11 +180,11 @@ pcibr_dmatrans_direct32(struct pcidev_info * info,
* DMA mappings for Direct 64 and 32 do not have any DMA maps.
*/
void
-pcibr_dma_unmap(struct pcidev_info *pcidev_info, dma_addr_t dma_handle,
- int direction)
+pcibr_dma_unmap(struct pci_dev *hwdev, dma_addr_t dma_handle, int direction)
{
- struct pcibus_info *pcibus_info = (struct pcibus_info *)pcidev_info->
- pdi_pcibus_info;
+ struct pcidev_info *pcidev_info = SN_PCIDEV_INFO(hwdev);
+ struct pcibus_info *pcibus_info =
+ (struct pcibus_info *)pcidev_info->pdi_pcibus_info;
if (IS_PCI32_MAPPED(dma_handle)) {
int ate_index;
@@ -316,64 +316,63 @@ void sn_dma_flush(uint64_t addr)
}
/*
- * Wrapper DMA interface. Called from pci_dma.c routines.
+ * DMA interfaces. Called from pci_dma.c routines.
*/
-uint64_t
-pcibr_dma_map(struct pcidev_info * pcidev_info, unsigned long phys_addr,
- size_t size, unsigned int flags)
+dma_addr_t
+pcibr_dma_map(struct pci_dev * hwdev, unsigned long phys_addr, size_t size)
{
dma_addr_t dma_handle;
- struct pci_dev *pcidev = pcidev_info->pdi_linux_pcidev;
-
- if (flags & SN_PCIDMA_CONSISTENT) {
- /* sn_pci_alloc_consistent interfaces */
- if (pcidev->dev.coherent_dma_mask == ~0UL) {
- dma_handle =
- pcibr_dmatrans_direct64(pcidev_info, phys_addr,
- PCI64_ATTR_BAR);
- } else {
- dma_handle =
- (dma_addr_t) pcibr_dmamap_ate32(pcidev_info,
- phys_addr, size,
- PCI32_ATE_BAR);
- }
- } else {
- /* map_sg/map_single interfaces */
+ struct pcidev_info *pcidev_info = SN_PCIDEV_INFO(hwdev);
- /* SN cannot support DMA addresses smaller than 32 bits. */
- if (pcidev->dma_mask < 0x7fffffff) {
- return 0;
- }
+ /* SN cannot support DMA addresses smaller than 32 bits. */
+ if (hwdev->dma_mask < 0x7fffffff) {
+ return 0;
+ }
- if (pcidev->dma_mask == ~0UL) {
+ if (hwdev->dma_mask == ~0UL) {
+ /*
+ * Handle the most common case: 64 bit cards. This
+ * call should always succeed.
+ */
+
+ dma_handle = pcibr_dmatrans_direct64(pcidev_info, phys_addr,
+ PCI64_ATTR_PREF);
+ } else {
+ /* Handle 32-63 bit cards via direct mapping */
+ dma_handle = pcibr_dmatrans_direct32(pcidev_info, phys_addr,
+ size, 0);
+ if (!dma_handle) {
/*
- * Handle the most common case: 64 bit cards. This
- * call should always succeed.
+ * It is a 32 bit card and we cannot do direct mapping,
+ * so we use an ATE.
*/
- dma_handle =
- pcibr_dmatrans_direct64(pcidev_info, phys_addr,
- PCI64_ATTR_PREF);
- } else {
- /* Handle 32-63 bit cards via direct mapping */
- dma_handle =
- pcibr_dmatrans_direct32(pcidev_info, phys_addr,
- size, 0);
- if (!dma_handle) {
- /*
- * It is a 32 bit card and we cannot do direct mapping,
- * so we use an ATE.
- */
-
- dma_handle =
- pcibr_dmamap_ate32(pcidev_info, phys_addr,
- size, PCI32_ATE_PREF);
- }
+ dma_handle = pcibr_dmamap_ate32(pcidev_info, phys_addr,
+ size, PCI32_ATE_PREF);
}
}
return dma_handle;
}
+dma_addr_t
+pcibr_dma_map_consistent(struct pci_dev * hwdev, unsigned long phys_addr,
+ size_t size)
+{
+ dma_addr_t dma_handle;
+ struct pcidev_info *pcidev_info = SN_PCIDEV_INFO(hwdev);
+
+ if (hwdev->dev.coherent_dma_mask == ~0UL) {
+ dma_handle = pcibr_dmatrans_direct64(pcidev_info, phys_addr,
+ PCI64_ATTR_BAR);
+ } else {
+ dma_handle = (dma_addr_t) pcibr_dmamap_ate32(pcidev_info,
+ phys_addr, size,
+ PCI32_ATE_BAR);
+ }
+
+ return dma_handle;
+}
+
EXPORT_SYMBOL(sn_dma_flush);