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Make SWP and TAS parameters changable in vdisk handler.

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git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@562 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Vladislav Bolkhovitin
2008-11-06 12:06:58 +00:00
parent 55153a772c
commit 3842a0af02
1 changed files with 29 additions and 10 deletions
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scst/src/dev_handlers/scst_vdisk.c
+29 -10
View File
@@ -1412,12 +1412,15 @@ static int vdisk_ctrl_m_pg(unsigned char *p, int pcontrol,
break;
case 1:
memset(p + 2, 0, sizeof(ctrl_m_pg) - 2);
#if 0 /* Too early, see corresponding comment in vdisk_exec_mode_select() */
p[2] |= 7 << 5;
p[3] |= 0xF << 4;
p[4] |= 1 << 3;
p[5] |= 1 << 6;
#if 0 /*
* It's too early to implement it, since we can't control the
* backstorage device parameters. ToDo
*/
p[2] |= 7 << 5; /* TST */
p[3] |= 0xF << 4; /* QUEUE ALGORITHM MODIFIER */
#endif
p[4] |= 1 << 3; /* SWP */
p[5] |= 1 << 6; /* TAS */
break;
case 2:
p[2] |= DEF_TST << 5;
@@ -1624,6 +1627,26 @@ out:
return res;
}
static void vdisk_ctrl_m_pg_select(unsigned char *p,
struct scst_vdisk_dev *virt_dev)
{
struct scst_device *dev = virt_dev->dev;
int old_swp = dev->swp, old_tas = dev->tas;
#if 0
/* Not implemented yet, see comment in vdisk_ctrl_m_pg() */
dev->tst = p[2] >> 5;
dev->queue_alg = p[3] >> 4;
#endif
dev->swp = (p[4] & 0x8) >> 3;
dev->tas = (p[5] & 0x40) >> 6;
PRINT_INFO("Device %s: new control mode page parameters: SWP %x "
"(was %x), TAS %x (was %x)", virt_dev->name, dev->swp,
old_swp, dev->tas, old_tas);
return;
}
static void vdisk_exec_mode_select(struct scst_cmd *cmd)
{
int32_t length;
@@ -1693,10 +1716,6 @@ static void vdisk_exec_mode_select(struct scst_cmd *cmd)
goto out_put;
}
break;
#if 0 /*
* It's too early to implement it, since we can't control the backstorage
* device parameters. ToDo
*/
} else if ((address[offset] & 0x3f) == 0xA) {
/* Control page */
if (address[offset + 1] != 0xA) {
@@ -1706,7 +1725,7 @@ static void vdisk_exec_mode_select(struct scst_cmd *cmd)
scst_sense_invalid_field_in_parm_list));
goto out_put;
}
#endif
vdisk_ctrl_m_pg_select(&address[offset], virt_dev);
} else {
PRINT_ERROR("MODE SELECT: Invalid request %x",
address[offset] & 0x3f);