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mtip32xx: Fix to support more than one sector in exec_drive_command()

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Fix to support more than one sector in exec_drive_command().

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Asai Thambi S P 2012-05-29 18:43:31 -07:00 committed by Jens Axboe
parent 0a07ab224a
commit e602878fd8
1 changed files with 44 additions and 16 deletions
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54
drivers/block/mtip32xx/mtip32xx.c
View file

@ -1890,7 +1890,27 @@ static int exec_drive_command(struct mtip_port *port, u8 *command,
void __user *user_buffer)
{
struct host_to_dev_fis fis;
struct host_to_dev_fis *reply = (port->rxfis + RX_FIS_D2H_REG);
struct host_to_dev_fis *reply;
u8 *buf = NULL;
dma_addr_t dma_addr = 0;
int rv = 0, xfer_sz = command[3];
if (xfer_sz) {
if (user_buffer)
return -EFAULT;
buf = dmam_alloc_coherent(&port->dd->pdev->dev,
ATA_SECT_SIZE * xfer_sz,
&dma_addr,
GFP_KERNEL);
if (!buf) {
dev_err(&port->dd->pdev->dev,
"Memory allocation failed (%d bytes)\n",
ATA_SECT_SIZE * xfer_sz);
return -ENOMEM;
}
memset(buf, 0, ATA_SECT_SIZE * xfer_sz);
}
/* Build the FIS. */
memset(&fis, 0, sizeof(struct host_to_dev_fis));
@ -1905,6 +1925,11 @@ static int exec_drive_command(struct mtip_port *port, u8 *command,
fis.cyl_hi = 0xC2;
}
if (xfer_sz)
reply = (port->rxfis + RX_FIS_PIO_SETUP);
else
reply = (port->rxfis + RX_FIS_D2H_REG);
dbg_printk(MTIP_DRV_NAME
" %s: User Command: cmd %x, sect %x, "
"feat %x, sectcnt %x\n",
@ -1914,43 +1939,46 @@ static int exec_drive_command(struct mtip_port *port, u8 *command,
command[2],
command[3]);
memset(port->sector_buffer, 0x00, ATA_SECT_SIZE);
/* Execute the command. */
if (mtip_exec_internal_command(port,
&fis,
5,
port->sector_buffer_dma,
(command[3] != 0) ? ATA_SECT_SIZE : 0,
(xfer_sz ? dma_addr : 0),
(xfer_sz ? ATA_SECT_SIZE * xfer_sz : 0),
0,
GFP_KERNEL,
MTIP_IOCTL_COMMAND_TIMEOUT_MS)
< 0) {
return -1;
rv = -EFAULT;
goto exit_drive_command;
}
/* Collect the completion status. */
command[0] = reply->command; /* Status*/
command[1] = reply->features; /* Error*/
command[2] = command[3];
command[2] = reply->sect_count;
dbg_printk(MTIP_DRV_NAME
" %s: Completion Status: stat %x, "
"err %x, cmd %x\n",
"err %x, nsect %x\n",
__func__,
command[0],
command[1],
command[2]);
if (user_buffer && command[3]) {
if (xfer_sz) {
if (copy_to_user(user_buffer,
port->sector_buffer,
buf,
ATA_SECT_SIZE * command[3])) {
return -EFAULT;
rv = -EFAULT;
goto exit_drive_command;
}
}
return 0;
exit_drive_command:
if (buf)
dmam_free_coherent(&port->dd->pdev->dev,
ATA_SECT_SIZE * xfer_sz, buf, dma_addr);
return rv;
}
/*