-/* $Id: ioport.c,v 1.45 2001/10/30 04:54:21 davem Exp $
+/*
* ioport.c: Simple io mapping allocator.
*
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
#include <linux/slab.h>
#include <linux/pci.h> /* struct pci_dev */
#include <linux/proc_fs.h>
+#include <linux/scatterlist.h>
#include <asm/io.h>
#include <asm/vaddrs.h>
struct resource *res;
int order;
- /* XXX why are some lenghts signed, others unsigned? */
+ /* XXX why are some lengths signed, others unsigned? */
if (len <= 0) {
return NULL;
}
*/
dma_addr_t sbus_map_single(struct sbus_dev *sdev, void *va, size_t len, int direction)
{
- /* XXX why are some lenghts signed, others unsigned? */
+ /* XXX why are some lengths signed, others unsigned? */
if (len <= 0) {
return 0;
}
* Device ownership issues as mentioned above for pci_map_single are
* the same here.
*/
-int pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg, int nents,
+int pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sgl, int nents,
int direction)
{
+ struct scatterlist *sg;
int n;
BUG_ON(direction == PCI_DMA_NONE);
/* IIep is write-through, not flushing. */
- for (n = 0; n < nents; n++) {
- BUG_ON(page_address(sg->page) == NULL);
- sg->dvma_address =
- virt_to_phys(page_address(sg->page)) + sg->offset;
+ for_each_sg(sgl, sg, nents, n) {
+ BUG_ON(page_address(sg_page(sg)) == NULL);
+ sg->dvma_address = virt_to_phys(sg_virt(sg));
sg->dvma_length = sg->length;
- sg++;
}
return nents;
}
* Again, cpu read rules concerning calls here are the same as for
* pci_unmap_single() above.
*/
-void pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sg, int nents,
+void pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sgl, int nents,
int direction)
{
+ struct scatterlist *sg;
int n;
BUG_ON(direction == PCI_DMA_NONE);
if (direction != PCI_DMA_TODEVICE) {
- for (n = 0; n < nents; n++) {
- BUG_ON(page_address(sg->page) == NULL);
+ for_each_sg(sgl, sg, nents, n) {
+ BUG_ON(page_address(sg_page(sg)) == NULL);
mmu_inval_dma_area(
- (unsigned long) page_address(sg->page),
+ (unsigned long) page_address(sg_page(sg)),
(sg->length + PAGE_SIZE-1) & PAGE_MASK);
- sg++;
}
}
}
* The same as pci_dma_sync_single_* but for a scatter-gather list,
* same rules and usage.
*/
-void pci_dma_sync_sg_for_cpu(struct pci_dev *hwdev, struct scatterlist *sg, int nents, int direction)
+void pci_dma_sync_sg_for_cpu(struct pci_dev *hwdev, struct scatterlist *sgl, int nents, int direction)
{
+ struct scatterlist *sg;
int n;
BUG_ON(direction == PCI_DMA_NONE);
if (direction != PCI_DMA_TODEVICE) {
- for (n = 0; n < nents; n++) {
- BUG_ON(page_address(sg->page) == NULL);
+ for_each_sg(sgl, sg, nents, n) {
+ BUG_ON(page_address(sg_page(sg)) == NULL);
mmu_inval_dma_area(
- (unsigned long) page_address(sg->page),
+ (unsigned long) page_address(sg_page(sg)),
(sg->length + PAGE_SIZE-1) & PAGE_MASK);
- sg++;
}
}
}
-void pci_dma_sync_sg_for_device(struct pci_dev *hwdev, struct scatterlist *sg, int nents, int direction)
+void pci_dma_sync_sg_for_device(struct pci_dev *hwdev, struct scatterlist *sgl, int nents, int direction)
{
+ struct scatterlist *sg;
int n;
BUG_ON(direction == PCI_DMA_NONE);
if (direction != PCI_DMA_TODEVICE) {
- for (n = 0; n < nents; n++) {
- BUG_ON(page_address(sg->page) == NULL);
+ for_each_sg(sgl, sg, nents, n) {
+ BUG_ON(page_address(sg_page(sg)) == NULL);
mmu_inval_dma_area(
- (unsigned long) page_address(sg->page),
+ (unsigned long) page_address(sg_page(sg)),
(sg->length + PAGE_SIZE-1) & PAGE_MASK);
- sg++;
}
}
}