@@ -167,6 +167,7 @@ static ulong scsi_read(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
block_dev->devnum, start, blks, (unsigned long)buffer);
do {
pccb->pdata = (unsigned char *)buf_addr;
+ pccb->dma_dir = DMA_FROM_DEVICE;
#ifdef CONFIG_SYS_64BIT_LBA
if (start > SCSI_LBA48_READ) {
unsigned long blocks;
@@ -235,6 +236,7 @@ static ulong scsi_write(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
__func__, block_dev->devnum, start, blks, (unsigned long)buffer);
do {
pccb->pdata = (unsigned char *)buf_addr;
+ pccb->dma_dir = DMA_TO_DEVICE;
if (blks > SCSI_MAX_BLK) {
pccb->datalen = block_dev->blksz * max_blks;
smallblks = max_blks;
@@ -382,6 +384,7 @@ static int scsi_read_capacity(struct udevice *dev, struct scsi_cmd *pccb,
pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
pccb->datalen = 16;
+ pccb->dma_dir = DMA_FROM_DEVICE;
if (scsi_exec(dev, pccb))
return 1;
@@ -484,6 +487,7 @@ static int scsi_detect_dev(struct udevice *dev, int target, int lun,
pccb->lun = lun;
pccb->pdata = (unsigned char *)&tempbuff;
pccb->datalen = 512;
+ pccb->dma_dir = DMA_FROM_DEVICE;
scsi_setup_inquiry(pccb);
if (scsi_exec(dev, pccb)) {
if (pccb->contr_stat == SCSI_SEL_TIME_OUT) {
@@ -6,6 +6,8 @@
#ifndef _SCSI_H
#define _SCSI_H
+#include <linux/dma-direction.h>
+
struct scsi_cmd {
unsigned char cmd[16]; /* command */
/* for request sense */
@@ -26,6 +28,7 @@ struct scsi_cmd {
unsigned long trans_bytes; /* tranfered bytes */
unsigned int priv;
+ enum dma_data_direction dma_dir;
};
/*-----------------------------------------------------------
Some SCSI devices like UFS use DMA for executing scsi commands and hence need to know the direction of transfer of the dma. Add a dma_dir element to the command structure to facilitate this. Signed-off-by: Faiz Abbas <faiz_abbas@ti.com> --- drivers/scsi/scsi.c | 4 ++++ include/scsi.h | 3 +++ 2 files changed, 7 insertions(+)