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authorGabe Black <gabeblack@chromium.org>2012-10-29 05:23:57 +0000
committerTom Rini <trini@ti.com>2012-11-02 15:20:42 -0700
commitb4c5bbce49a081f5d05837ba13ee76afeff72d91 (patch)
tree548f8649623034a8de08f3eaba5eef2d98534f5a /common/cmd_scsi.c
parent5a2b77f47daa5c87ef45a1c71c72cbc16ede77f8 (diff)
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ahci: Support 64-bit LBA option when reading capacity
Capacity needs to allow for a 64-bit value. Signed-off-by: Gabe Black <gabeblack@google.com> Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'common/cmd_scsi.c')
-rw-r--r--common/cmd_scsi.c92
1 files changed, 66 insertions, 26 deletions
diff --git a/common/cmd_scsi.c b/common/cmd_scsi.c
index 9bd8ec9..266bfa6 100644
--- a/common/cmd_scsi.c
+++ b/common/cmd_scsi.c
@@ -72,7 +72,6 @@ static block_dev_desc_t scsi_dev_desc[CONFIG_SYS_SCSI_MAX_DEVICE];
* forward declerations of some Setup Routines
*/
void scsi_setup_test_unit_ready(ccb * pccb);
-void scsi_setup_read_capacity(ccb * pccb);
void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks);
void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks);
static void scsi_setup_write_ext(ccb *pccb, unsigned long start,
@@ -81,6 +80,8 @@ void scsi_setup_inquiry(ccb * pccb);
void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);
+static int scsi_read_capacity(ccb *pccb, lbaint_t *capacity,
+ unsigned long *blksz);
static ulong scsi_read(int device, ulong blknr, lbaint_t blkcnt, void *buffer);
static ulong scsi_write(int device, ulong blknr,
lbaint_t blkcnt, const void *buffer);
@@ -93,7 +94,8 @@ static ulong scsi_write(int device, ulong blknr,
void scsi_scan(int mode)
{
unsigned char i,perq,modi,lun;
- unsigned long capacity,blksz;
+ lbaint_t capacity;
+ unsigned long blksz;
ccb* pccb=(ccb *)&tempccb;
if(mode==1) {
@@ -158,16 +160,10 @@ void scsi_scan(int mode)
scsi_print_error(pccb);
continue;
}
- pccb->datalen=8;
- scsi_setup_read_capacity(pccb);
- if(scsi_exec(pccb)!=TRUE) {
+ if (scsi_read_capacity(pccb, &capacity, &blksz)) {
scsi_print_error(pccb);
continue;
}
- capacity=((unsigned long)tempbuff[0]<<24)|((unsigned long)tempbuff[1]<<16)|
- ((unsigned long)tempbuff[2]<<8)|((unsigned long)tempbuff[3]);
- blksz=((unsigned long)tempbuff[4]<<24)|((unsigned long)tempbuff[5]<<16)|
- ((unsigned long)tempbuff[6]<<8)|((unsigned long)tempbuff[7]);
scsi_dev_desc[scsi_max_devs].lba=capacity;
scsi_dev_desc[scsi_max_devs].blksz=blksz;
scsi_dev_desc[scsi_max_devs].type=perq;
@@ -514,6 +510,67 @@ void scsi_trim_trail (unsigned char *str, unsigned int len)
}
}
+int scsi_read_capacity(ccb *pccb, lbaint_t *capacity, unsigned long *blksz)
+{
+ *capacity = 0;
+
+ memset(pccb->cmd, 0, sizeof(pccb->cmd));
+ pccb->cmd[0] = SCSI_RD_CAPAC10;
+ pccb->cmd[1] = pccb->lun << 5;
+ pccb->cmdlen = 10;
+ pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
+
+ pccb->datalen = 8;
+ if (scsi_exec(pccb) != TRUE)
+ return 1;
+
+ *capacity = ((lbaint_t)pccb->pdata[0] << 24) |
+ ((lbaint_t)pccb->pdata[1] << 16) |
+ ((lbaint_t)pccb->pdata[2] << 8) |
+ ((lbaint_t)pccb->pdata[3]);
+
+ if (*capacity != 0xffffffff) {
+ /* Read capacity (10) was sufficient for this drive. */
+ *blksz = ((unsigned long)pccb->pdata[4] << 24) |
+ ((unsigned long)pccb->pdata[5] << 16) |
+ ((unsigned long)pccb->pdata[6] << 8) |
+ ((unsigned long)pccb->pdata[7]);
+ return 0;
+ }
+
+ /* Read capacity (10) was insufficient. Use read capacity (16). */
+
+ memset(pccb->cmd, 0, sizeof(pccb->cmd));
+ pccb->cmd[0] = SCSI_RD_CAPAC16;
+ pccb->cmd[1] = 0x10;
+ pccb->cmdlen = 16;
+ pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
+
+ pccb->datalen = 16;
+ if (scsi_exec(pccb) != TRUE)
+ return 1;
+
+ *capacity = ((uint64_t)pccb->pdata[0] << 56) |
+ ((uint64_t)pccb->pdata[1] << 48) |
+ ((uint64_t)pccb->pdata[2] << 40) |
+ ((uint64_t)pccb->pdata[3] << 32) |
+ ((uint64_t)pccb->pdata[4] << 24) |
+ ((uint64_t)pccb->pdata[5] << 16) |
+ ((uint64_t)pccb->pdata[6] << 8) |
+ ((uint64_t)pccb->pdata[7]);
+
+ *blksz = ((uint64_t)pccb->pdata[8] << 56) |
+ ((uint64_t)pccb->pdata[9] << 48) |
+ ((uint64_t)pccb->pdata[10] << 40) |
+ ((uint64_t)pccb->pdata[11] << 32) |
+ ((uint64_t)pccb->pdata[12] << 24) |
+ ((uint64_t)pccb->pdata[13] << 16) |
+ ((uint64_t)pccb->pdata[14] << 8) |
+ ((uint64_t)pccb->pdata[15]);
+
+ return 0;
+}
+
/************************************************************************************
* Some setup (fill-in) routines
@@ -530,23 +587,6 @@ void scsi_setup_test_unit_ready(ccb * pccb)
pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
}
-void scsi_setup_read_capacity(ccb * pccb)
-{
- pccb->cmd[0]=SCSI_RD_CAPAC;
- pccb->cmd[1]=pccb->lun<<5;
- pccb->cmd[2]=0;
- pccb->cmd[3]=0;
- pccb->cmd[4]=0;
- pccb->cmd[5]=0;
- pccb->cmd[6]=0;
- pccb->cmd[7]=0;
- pccb->cmd[8]=0;
- pccb->cmd[9]=0;
- pccb->cmdlen=10;
- pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
-
-}
-
void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks)
{
pccb->cmd[0]=SCSI_READ10;