[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/kernel/dma-isa.c b/arch/arm/kernel/dma-isa.c
index e9a3630..0353276 100644
--- a/arch/arm/kernel/dma-isa.c
+++ b/arch/arm/kernel/dma-isa.c
@@ -18,7 +18,7 @@
*/
#include <linux/ioport.h>
#include <linux/init.h>
-#include <linux/pci.h>
+#include <linux/dma-mapping.h>
#include <asm/dma.h>
#include <asm/io.h>
@@ -65,37 +65,41 @@
{
if (dma->invalid) {
unsigned long address, length;
- unsigned int mode, direction;
+ unsigned int mode;
+ enum dma_data_direction direction;
mode = channel & 3;
switch (dma->dma_mode & DMA_MODE_MASK) {
case DMA_MODE_READ:
mode |= ISA_DMA_MODE_READ;
- direction = PCI_DMA_FROMDEVICE;
+ direction = DMA_FROM_DEVICE;
break;
case DMA_MODE_WRITE:
mode |= ISA_DMA_MODE_WRITE;
- direction = PCI_DMA_TODEVICE;
+ direction = DMA_TO_DEVICE;
break;
case DMA_MODE_CASCADE:
mode |= ISA_DMA_MODE_CASCADE;
- direction = PCI_DMA_BIDIRECTIONAL;
+ direction = DMA_BIDIRECTIONAL;
break;
default:
- direction = PCI_DMA_NONE;
+ direction = DMA_NONE;
break;
}
- if (!dma->using_sg) {
+ if (!dma->sg) {
/*
* Cope with ISA-style drivers which expect cache
* coherence.
*/
- dma->buf.dma_address = pci_map_single(NULL,
- dma->buf.__address, dma->buf.length,
+ dma->sg = &dma->buf;
+ dma->sgcount = 1;
+ dma->buf.length = dma->count;
+ dma->buf.dma_address = dma_map_single(NULL,
+ dma->addr, dma->count,
direction);
}