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| author | Ed Lin <ed.lin@promise.com> | 2006-12-04 17:49:34 -0800 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-12-05 11:32:46 -0600 |
| commit | 529e7a62c8016ab7d3ef4ef6d39de23c0569781f (patch) | |
| tree | 4b903a2effa41fc6f66837af1fc9bbe5b183aedd /drivers/scsi/stex.c | |
| parent | 47c4f997c7bd9ab142c65950317232728b921aa0 (diff) | |
| download | kernel-common-529e7a62c8016ab7d3ef4ef6d39de23c0569781f.tar.gz kernel-common-529e7a62c8016ab7d3ef4ef6d39de23c0569781f.tar.bz2 kernel-common-529e7a62c8016ab7d3ef4ef6d39de23c0569781f.zip | |
[SCSI] stex: adjust default queue length
Firmware of new version may adjust default queue length. It is
backward compatible.
Signed-off-by: Ed Lin <ed.lin@promise.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/stex.c')
| -rw-r--r-- | drivers/scsi/stex.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c index 92dbac03c2e5..a20cbd9d325a 100644 --- a/drivers/scsi/stex.c +++ b/drivers/scsi/stex.c @@ -78,6 +78,7 @@ enum { MU_MAX_DELAY_TIME = 240000, MU_HANDSHAKE_SIGNATURE = 0x55aaaa55, + MU_HANDSHAKE_SIGNATURE_HALF = 0x5a5a0000, HMU_PARTNER_TYPE = 2, /* firmware returned values */ @@ -902,6 +903,7 @@ static int stex_handshake(struct st_hba *hba) void __iomem *base = hba->mmio_base; struct handshake_frame *h; dma_addr_t status_phys; + u32 data; int i; if (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) { @@ -923,6 +925,13 @@ static int stex_handshake(struct st_hba *hba) udelay(10); + data = readl(base + OMR1); + if ((data & 0xffff0000) == MU_HANDSHAKE_SIGNATURE_HALF) { + data &= 0x0000ffff; + if (hba->host->can_queue > data) + hba->host->can_queue = data; + } + h = (struct handshake_frame *)(hba->dma_mem + MU_REQ_BUFFER_SIZE); h->rb_phy = cpu_to_le32(hba->dma_handle); h->rb_phy_hi = cpu_to_le32((hba->dma_handle >> 16) >> 16); @@ -1234,7 +1243,7 @@ stex_probe(struct pci_dev *pdev, const struct pci_device_id *id) if (err) goto out_free_irq; - err = scsi_init_shared_tag_map(host, ST_CAN_QUEUE); + err = scsi_init_shared_tag_map(host, host->can_queue); if (err) { printk(KERN_ERR DRV_NAME "(%s): init shared queue failed\n", pci_name(pdev)); |