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authorAnand Kumar Santhanam <AnandKumar.Santhanam@pmcs.com>2013-09-18 11:14:54 +0530
committerJames Bottomley <JBottomley@Parallels.com>2013-10-25 09:58:15 +0100
commit0ecdf00ba6e50eaa452356d0d4e79657dab702a4 (patch)
treecef681a9f28e7bc82314ddf7fe6d81f9c9e1c022 /drivers/scsi/pm8001
parentf9cd6cbd80d1d5963ffd0eab3970235cd4205984 (diff)
[SCSI] pm80xx: 4G boundary fix.
Firmware is having an issue. When a single IO request crosses 4G boundary, system will crash. To avoid the issue single sg is converted into extended sg. Signed-off-by: Anandkumar.Santhanam@pmcs.com Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/pm8001')
-rw-r--r--drivers/scsi/pm8001/pm80xx_hwi.c103
1 files changed, 101 insertions, 2 deletions
diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c
index fa06f24e1656..37ddc5dda7bb 100644
--- a/drivers/scsi/pm8001/pm80xx_hwi.c
+++ b/drivers/scsi/pm8001/pm80xx_hwi.c
@@ -3610,7 +3610,8 @@ static int pm80xx_chip_ssp_io_req(struct pm8001_hba_info *pm8001_ha,
struct ssp_ini_io_start_req ssp_cmd;
u32 tag = ccb->ccb_tag;
int ret;
- u64 phys_addr;
+ u64 phys_addr, start_addr, end_addr;
+ u32 end_addr_high, end_addr_low;
struct inbound_queue_table *circularQ;
u32 q_index;
u32 opc = OPC_INB_SSPINIIOSTART;
@@ -3664,6 +3665,30 @@ static int pm80xx_chip_ssp_io_req(struct pm8001_hba_info *pm8001_ha,
cpu_to_le32(upper_32_bits(dma_addr));
ssp_cmd.enc_len = cpu_to_le32(task->total_xfer_len);
ssp_cmd.enc_esgl = 0;
+ /* Check 4G Boundary */
+ start_addr = cpu_to_le64(dma_addr);
+ end_addr = (start_addr + ssp_cmd.enc_len) - 1;
+ end_addr_low = cpu_to_le32(lower_32_bits(end_addr));
+ end_addr_high = cpu_to_le32(upper_32_bits(end_addr));
+ if (end_addr_high != ssp_cmd.enc_addr_high) {
+ PM8001_FAIL_DBG(pm8001_ha,
+ pm8001_printk("The sg list address "
+ "start_addr=0x%016llx data_len=0x%x "
+ "end_addr_high=0x%08x end_addr_low="
+ "0x%08x has crossed 4G boundary\n",
+ start_addr, ssp_cmd.enc_len,
+ end_addr_high, end_addr_low));
+ pm8001_chip_make_sg(task->scatter, 1,
+ ccb->buf_prd);
+ phys_addr = ccb->ccb_dma_handle +
+ offsetof(struct pm8001_ccb_info,
+ buf_prd[0]);
+ ssp_cmd.enc_addr_low =
+ cpu_to_le32(lower_32_bits(phys_addr));
+ ssp_cmd.enc_addr_high =
+ cpu_to_le32(upper_32_bits(phys_addr));
+ ssp_cmd.enc_esgl = cpu_to_le32(1<<31);
+ }
} else if (task->num_scatter == 0) {
ssp_cmd.enc_addr_low = 0;
ssp_cmd.enc_addr_high = 0;
@@ -3699,6 +3724,30 @@ static int pm80xx_chip_ssp_io_req(struct pm8001_hba_info *pm8001_ha,
cpu_to_le32(upper_32_bits(dma_addr));
ssp_cmd.len = cpu_to_le32(task->total_xfer_len);
ssp_cmd.esgl = 0;
+ /* Check 4G Boundary */
+ start_addr = cpu_to_le64(dma_addr);
+ end_addr = (start_addr + ssp_cmd.len) - 1;
+ end_addr_low = cpu_to_le32(lower_32_bits(end_addr));
+ end_addr_high = cpu_to_le32(upper_32_bits(end_addr));
+ if (end_addr_high != ssp_cmd.addr_high) {
+ PM8001_FAIL_DBG(pm8001_ha,
+ pm8001_printk("The sg list address "
+ "start_addr=0x%016llx data_len=0x%x "
+ "end_addr_high=0x%08x end_addr_low="
+ "0x%08x has crossed 4G boundary\n",
+ start_addr, ssp_cmd.len,
+ end_addr_high, end_addr_low));
+ pm8001_chip_make_sg(task->scatter, 1,
+ ccb->buf_prd);
+ phys_addr = ccb->ccb_dma_handle +
+ offsetof(struct pm8001_ccb_info,
+ buf_prd[0]);
+ ssp_cmd.addr_low =
+ cpu_to_le32(lower_32_bits(phys_addr));
+ ssp_cmd.addr_high =
+ cpu_to_le32(upper_32_bits(phys_addr));
+ ssp_cmd.esgl = cpu_to_le32(1<<31);
+ }
} else if (task->num_scatter == 0) {
ssp_cmd.addr_low = 0;
ssp_cmd.addr_high = 0;
@@ -3723,7 +3772,8 @@ static int pm80xx_chip_sata_req(struct pm8001_hba_info *pm8001_ha,
u32 q_index;
struct sata_start_req sata_cmd;
u32 hdr_tag, ncg_tag = 0;
- u64 phys_addr;
+ u64 phys_addr, start_addr, end_addr;
+ u32 end_addr_high, end_addr_low;
u32 ATAP = 0x0;
u32 dir;
struct inbound_queue_table *circularQ;
@@ -3792,6 +3842,31 @@ static int pm80xx_chip_sata_req(struct pm8001_hba_info *pm8001_ha,
sata_cmd.enc_addr_high = upper_32_bits(dma_addr);
sata_cmd.enc_len = cpu_to_le32(task->total_xfer_len);
sata_cmd.enc_esgl = 0;
+ /* Check 4G Boundary */
+ start_addr = cpu_to_le64(dma_addr);
+ end_addr = (start_addr + sata_cmd.enc_len) - 1;
+ end_addr_low = cpu_to_le32(lower_32_bits(end_addr));
+ end_addr_high = cpu_to_le32(upper_32_bits(end_addr));
+ if (end_addr_high != sata_cmd.enc_addr_high) {
+ PM8001_FAIL_DBG(pm8001_ha,
+ pm8001_printk("The sg list address "
+ "start_addr=0x%016llx data_len=0x%x "
+ "end_addr_high=0x%08x end_addr_low"
+ "=0x%08x has crossed 4G boundary\n",
+ start_addr, sata_cmd.enc_len,
+ end_addr_high, end_addr_low));
+ pm8001_chip_make_sg(task->scatter, 1,
+ ccb->buf_prd);
+ phys_addr = ccb->ccb_dma_handle +
+ offsetof(struct pm8001_ccb_info,
+ buf_prd[0]);
+ sata_cmd.enc_addr_low =
+ lower_32_bits(phys_addr);
+ sata_cmd.enc_addr_high =
+ upper_32_bits(phys_addr);
+ sata_cmd.enc_esgl =
+ cpu_to_le32(1 << 31);
+ }
} else if (task->num_scatter == 0) {
sata_cmd.enc_addr_low = 0;
sata_cmd.enc_addr_high = 0;
@@ -3833,6 +3908,30 @@ static int pm80xx_chip_sata_req(struct pm8001_hba_info *pm8001_ha,
sata_cmd.addr_high = upper_32_bits(dma_addr);
sata_cmd.len = cpu_to_le32(task->total_xfer_len);
sata_cmd.esgl = 0;
+ /* Check 4G Boundary */
+ start_addr = cpu_to_le64(dma_addr);
+ end_addr = (start_addr + sata_cmd.len) - 1;
+ end_addr_low = cpu_to_le32(lower_32_bits(end_addr));
+ end_addr_high = cpu_to_le32(upper_32_bits(end_addr));
+ if (end_addr_high != sata_cmd.addr_high) {
+ PM8001_FAIL_DBG(pm8001_ha,
+ pm8001_printk("The sg list address "
+ "start_addr=0x%016llx data_len=0x%x"
+ "end_addr_high=0x%08x end_addr_low="
+ "0x%08x has crossed 4G boundary\n",
+ start_addr, sata_cmd.len,
+ end_addr_high, end_addr_low));
+ pm8001_chip_make_sg(task->scatter, 1,
+ ccb->buf_prd);
+ phys_addr = ccb->ccb_dma_handle +
+ offsetof(struct pm8001_ccb_info,
+ buf_prd[0]);
+ sata_cmd.addr_low =
+ lower_32_bits(phys_addr);
+ sata_cmd.addr_high =
+ upper_32_bits(phys_addr);
+ sata_cmd.esgl = cpu_to_le32(1 << 31);
+ }
} else if (task->num_scatter == 0) {
sata_cmd.addr_low = 0;
sata_cmd.addr_high = 0;