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[SPARC64]: First cut at SUN4V PCI IOMMU handling.

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Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2006-02-10 00:08:26 -08:00
parent 164c220fa3
commit 1839794464
4 changed files with 550 additions and 31 deletions
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arch/sparc64/kernel/pci_iommu.c
+3 -3
View File
@@ -562,9 +562,9 @@ static int pci_4u_map_sg(struct pci_dev *pdev, struct scatterlist *sglist, int n
/* Fast path single entry scatterlists. */
if (nelems == 1) {
sglist->dma_address =
pci_map_single(pdev,
(page_address(sglist->page) + sglist->offset),
sglist->length, direction);
pci_4u_map_single(pdev,
(page_address(sglist->page) + sglist->offset),
sglist->length, direction);
if (unlikely(sglist->dma_address == PCI_DMA_ERROR_CODE))
return 0;
sglist->dma_length = sglist->length;
arch/sparc64/kernel/pci_sun4v.c
+521 -4
View File
File diff suppressed because it is too large Load Diff
arch/sparc64/kernel/pci_sun4v.h
+4
View File
@@ -16,6 +16,10 @@ extern unsigned long pci_sun4v_iommu_map(unsigned long devhandle,
extern unsigned long pci_sun4v_iommu_demap(unsigned long devhandle,
unsigned long tsbid,
unsigned long num_ttes);
extern unsigned long pci_sun4v_iommu_getmap(unsigned long devhandle,
unsigned long tsbid,
unsigned long *io_attributes,
unsigned long *real_address);
extern unsigned long pci_sun4v_config_get(unsigned long devhandle,
unsigned long pci_device,
unsigned long config_offset,
arch/sparc64/kernel/pci_sun4v_asm.S
+22 -24
View File
@@ -12,9 +12,7 @@
*/
.globl pci_sun4v_devino_to_sysino
pci_sun4v_devino_to_sysino:
mov %o1, %o2
mov %o0, %o1
mov HV_FAST_INTR_DEVINO2SYSINO, %o0
mov HV_FAST_INTR_DEVINO2SYSINO, %o5
ta HV_FAST_TRAP
retl
mov %o1, %o0
@@ -29,12 +27,7 @@ pci_sun4v_devino_to_sysino:
*/
.globl pci_sun4v_iommu_map
pci_sun4v_iommu_map:
mov %o4, %o5
mov %o3, %o4
mov %o2, %o3
mov %o1, %o2
mov %o0, %o1
mov HV_FAST_PCI_IOMMU_MAP, %o0
mov HV_FAST_PCI_IOMMU_MAP, %o5
ta HV_FAST_TRAP
retl
mov %o1, %o0
@@ -47,14 +40,28 @@ pci_sun4v_iommu_map:
*/
.globl pci_sun4v_iommu_demap
pci_sun4v_iommu_demap:
mov %o2, %o3
mov %o1, %o2
mov %o0, %o1
mov HV_FAST_PCI_IOMMU_DEMAP, %o0
mov HV_FAST_PCI_IOMMU_DEMAP, %o5
ta HV_FAST_TRAP
retl
mov %o1, %o0
/* %o0: devhandle
* %o1: tsbid
* %o2: &io_attributes
* %o3: &real_address
*
* returns %o0: status
*/
.globl pci_sun4v_iommu_getmap
pci_sun4v_iommu_getmap:
mov %o2, %o4
mov HV_FAST_PCI_IOMMU_GETMAP, %o5
ta HV_FAST_TRAP
stx %o1, [%o4]
stx %o2, [%o3]
retl
mov %o0, %o0
/* %o0: devhandle
* %o1: pci_device
* %o2: pci_config_offset
@@ -67,11 +74,7 @@ pci_sun4v_iommu_demap:
*/
.globl pci_sun4v_config_get
pci_sun4v_config_get:
mov %o3, %o4
mov %o2, %o3
mov %o1, %o2
mov %o0, %o1
mov HV_FAST_PCI_CONFIG_GET, %o0
mov HV_FAST_PCI_CONFIG_GET, %o5
ta HV_FAST_TRAP
brnz,a,pn %o1, 1f
mov -1, %o2
@@ -91,14 +94,9 @@ pci_sun4v_config_get:
*/
.globl pci_sun4v_config_put
pci_sun4v_config_put:
mov %o3, %o4
mov %o2, %o3
mov %o1, %o2
mov %o0, %o1
mov HV_FAST_PCI_CONFIG_PUT, %o0
mov HV_FAST_PCI_CONFIG_PUT, %o5
ta HV_FAST_TRAP
brnz,a,pn %o1, 1f
mov -1, %o1
1: retl
mov %o1, %o0