[ARM] Remove '__address' from scatterlist and convert to DMA API
The old __address element in struct scatterlist remained from older
kernels because the ARM DMA emulation code made use of it. Move
this field into struct dma_struct, and convert DMA emulation code
to setup a SG entry as required.
Also, convert DMA emulation code to use the new DMA API rather
than the PCI DMA API.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-rpc/dma.c b/arch/arm/mach-rpc/dma.c
index bc07474..bd86ffb 100644
--- a/arch/arm/mach-rpc/dma.c
+++ b/arch/arm/mach-rpc/dma.c
@@ -13,7 +13,7 @@
#include <linux/mman.h>
#include <linux/init.h>
#include <linux/interrupt.h>
-#include <linux/pci.h>
+#include <linux/dma-mapping.h>
#include <asm/page.h>
#include <asm/dma.h>
@@ -148,11 +148,14 @@
* Cope with ISA-style drivers which expect cache
* coherence.
*/
- if (!dma->using_sg) {
- dma->buf.dma_address = pci_map_single(NULL,
- dma->buf.__address, dma->buf.length,
+ if (!dma->sg) {
+ dma->sg = &dma->buf;
+ dma->sgcount = 1;
+ dma->buf.length = dma->count;
+ dma->buf.dma_address = dma_map_single(NULL,
+ dma->addr, dma->count,
dma->dma_mode == DMA_MODE_READ ?
- PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
+ DMA_FROM_DEVICE : DMA_TO_DEVICE);
}
iomd_writeb(DMA_CR_C, dma_base + CR);
@@ -239,7 +242,7 @@
unsigned int fiqhandler_length;
struct pt_regs regs;
- if (dma->using_sg)
+ if (dma->sg)
BUG();
if (dma->dma_mode == DMA_MODE_READ) {
@@ -252,8 +255,8 @@
fiqhandler_length = &floppy_fiqout_end - &floppy_fiqout_start;
}
- regs.ARM_r9 = dma->buf.length;
- regs.ARM_r10 = (unsigned long)dma->buf.__address;
+ regs.ARM_r9 = dma->count;
+ regs.ARM_r10 = (unsigned long)dma->addr;
regs.ARM_fp = (unsigned long)FLOPPYDMA_BASE;
if (claim_fiq(&fh)) {
