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| author | Ed Lin <ed.lin@promise.com> | 2009-08-18 12:15:14 -0700 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2009-09-05 08:50:41 -0500 |
| commit | 69cb48750b02034350bc78d8053647d7464cdde0 (patch) | |
| tree | 3dbcf5114ed1d65b1110f5e86c268ce5f2509b9d | |
| parent | 41e05a12c7aae16f0381103af3e5ca791e87ce59 (diff) | |
| download | kernel_samsung_espresso10-69cb48750b02034350bc78d8053647d7464cdde0.zip kernel_samsung_espresso10-69cb48750b02034350bc78d8053647d7464cdde0.tar.gz kernel_samsung_espresso10-69cb48750b02034350bc78d8053647d7464cdde0.tar.bz2 | |
[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>
| -rw-r--r-- | drivers/scsi/stex.c | 33 |
1 files changed, 29 insertions, 4 deletions
diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c index 8d2a95c..09fa886 100644 --- a/drivers/scsi/stex.c +++ b/drivers/scsi/stex.c @@ -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)) { |