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[SCSI] stex: Add reset code for st_yel (v2) 

Add reset related code for st_yel.
1. Set the SS_H2I_INT_RESET bit.
2. Wait for the SS_MU_OPERATIONAL flag. This is also part of
   normal handshake process so move it to handshake routine.
3. Continue handshake with the firmware.

Signed-off-by: Ed Lin <ed.lin@promise.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Ed Lin 2009-08-18 12:15:14 -07:00 committed by James Bottomley
parent 41e05a12c7
commit 69cb48750b
1 changed files with 29 additions and 4 deletions
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33
drivers/scsi/stex.c
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@ -55,6 +55,7 @@ enum {
OIS = 0x30, /* MU_OUTBOUND_INTERRUPT_STATUS */
OIM = 0x3c, /* MU_OUTBOUND_INTERRUPT_MASK */
YIOA_STATUS = 0x00,
YH2I_INT = 0x20,
YINT_EN = 0x34,
YI2H_INT = 0x9c,
@ -108,6 +109,10 @@ enum {
SS_HEAD_HANDSHAKE = 0x80,
SS_H2I_INT_RESET = 0x100,
SS_MU_OPERATIONAL = 0x80000000,
STEX_CDB_LENGTH = 16,
STATUS_VAR_LEN = 128,
@ -884,7 +889,7 @@ static void stex_ss_mu_intr(struct st_hba *hba)
tag = (u16)value;
if (unlikely(tag >= hba->host->can_queue)) {
printk(KERN_WARNING DRV_NAME
"(%s): invalid tag\n", pci_name(hba->pdev));
"(%s): invalid tag\n", pci_name(hba->pdev));
continue;
}
@ -1040,16 +1045,27 @@ static int stex_ss_handshake(struct st_hba *hba)
void __iomem *base = hba->mmio_base;
struct st_msg_header *msg_h;
struct handshake_frame *h;
__le32 *scratch = hba->scratch;
__le32 *scratch;
u32 data;
unsigned long before;
int ret = 0;
h = (struct handshake_frame *)(hba->alloc_rq(hba));
msg_h = (struct st_msg_header *)h - 1;
before = jiffies;
while ((readl(base + YIOA_STATUS) & SS_MU_OPERATIONAL) == 0) {
if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
printk(KERN_ERR DRV_NAME
"(%s): firmware not operational\n",
pci_name(hba->pdev));
return -1;
}
msleep(1);
}
msg_h = (struct st_msg_header *)hba->dma_mem;
msg_h->handle = cpu_to_le64(hba->dma_handle);
msg_h->flag = SS_HEAD_HANDSHAKE;
h = (struct handshake_frame *)(msg_h + 1);
h->rb_phy = cpu_to_le64(hba->dma_handle);
h->req_sz = cpu_to_le16(hba->rq_size);
h->req_cnt = cpu_to_le16(hba->rq_count+1);
@ -1205,6 +1221,13 @@ static void stex_hard_reset(struct st_hba *hba)
hba->pdev->saved_config_space[i]);
}
static void stex_ss_reset(struct st_hba *hba)
{
writel(SS_H2I_INT_RESET, hba->mmio_base + YH2I_INT);
readl(hba->mmio_base + YH2I_INT);
ssleep(5);
}
static int stex_reset(struct scsi_cmnd *cmd)
{
struct st_hba *hba;
@ -1221,6 +1244,8 @@ static int stex_reset(struct scsi_cmnd *cmd)
if (hba->cardtype == st_shasta)
stex_hard_reset(hba);
else if (hba->cardtype == st_yel)
stex_ss_reset(hba);
if (hba->cardtype != st_yosemite) {
if (stex_handshake(hba)) {