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AHCI: convert to streaming DMA ops 

Move to the common streaming DMA ops in order to get rid of
the direct usage of the ARM MMU functions for the cache
maintenance.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Lucas Stach 2015-03-05 22:50:03 +01:00 committed by Sascha Hauer
parent cdb471b023
commit 3110eed114
1 changed files with 10 additions and 3 deletions
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13
drivers/ata/ahci.c
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@ -31,7 +31,6 @@
#include <linux/ctype.h>
#include <linux/err.h>
#include <disks.h>
#include <asm/mmu.h>
#include <ata_drive.h>
#include <linux/sizes.h>
#include <clock.h>
@ -170,7 +169,11 @@ static int ahci_io(struct ahci_port *ahci_port, u8 *fis, int fis_len, void *rbuf
return -EIO;
if (wbuf)
dma_flush_range((unsigned long)wbuf, (unsigned long)wbuf + buf_len);
dma_sync_single_for_device((unsigned long)wbuf, buf_len,
DMA_TO_DEVICE);
if (rbuf)
dma_sync_single_for_device((unsigned long)rbuf, buf_len,
DMA_FROM_DEVICE);
memcpy((unsigned char *)ahci_port->cmd_tbl, fis, fis_len);
@ -187,8 +190,12 @@ static int ahci_io(struct ahci_port *ahci_port, u8 *fis, int fis_len, void *rbuf
if (ret)
return -ETIMEDOUT;
if (wbuf)
dma_sync_single_for_cpu((unsigned long)wbuf, buf_len,
DMA_TO_DEVICE);
if (rbuf)
dma_inv_range((unsigned long)rbuf, (unsigned long)rbuf + buf_len);
dma_sync_single_for_cpu((unsigned long)rbuf, buf_len,
DMA_FROM_DEVICE);
return 0;
}