[SCSI] pm8001: fix endian issue with code optimization.

1. Fix endian issue.
2. Fix the following warning :
    " drivers/scsi/pm8001/pm8001_hwi.c:2932:32: warning: comparison
      between ‘enum sas_device_type’ and ‘enum sas_dev_type’".
3. Few code optimization.

Signed-off-by: Santosh Nayak <santoshprasadnayak@gmail.com>
Acked-by: Jack Wang <jack_wang@usish.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/drivers/scsi/pm8001/pm8001_chips.h b/drivers/scsi/pm8001/pm8001_chips.h
index 4efa4d0..9241c78 100644 (file)
--- a/drivers/scsi/pm8001/pm8001_chips.h
+++ b/drivers/scsi/pm8001/pm8001_chips.h
@@ -46,9 +46,9 @@ static inline u32 pm8001_read_32(void *virt_addr)
        return *((u32 *)virt_addr);
 }
 
-static inline void pm8001_write_32(void *addr, u32 offset, u32 val)
+static inline void pm8001_write_32(void *addr, u32 offset, __le32 val)
 {
-       *((u32 *)(addr + offset)) = val;
+       *((__le32 *)(addr + offset)) = val;
 }
 
 static inline u32 pm8001_cr32(struct pm8001_hba_info *pm8001_ha, u32 bar,

diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c
index dc28ae1..5022bf7 100644 (file)
--- a/drivers/scsi/pm8001/pm8001_hwi.c
+++ b/drivers/scsi/pm8001/pm8001_hwi.c
@@ -1246,7 +1246,7 @@ static int mpi_msg_free_get(struct inbound_queue_table *circularQ,
        consumer_index = pm8001_read_32(circularQ->ci_virt);
        circularQ->consumer_index = cpu_to_le32(consumer_index);
        if (((circularQ->producer_idx + bcCount) % 256) ==
-               circularQ->consumer_index) {
+               le32_to_cpu(circularQ->consumer_index)) {
                *messagePtr = NULL;
                return -1;
        }
@@ -1355,7 +1355,8 @@ static u32 mpi_msg_consume(struct pm8001_hba_info *pm8001_ha,
        u32 header_tmp;
        do {
                /* If there are not-yet-delivered messages ... */
-               if (circularQ->producer_index != circularQ->consumer_idx) {
+               if (le32_to_cpu(circularQ->producer_index)
+                       != circularQ->consumer_idx) {
                        /*Get the pointer to the circular queue buffer element*/
                        msgHeader = (struct mpi_msg_hdr *)
                                (circularQ->base_virt +
@@ -1363,14 +1364,14 @@ static u32 mpi_msg_consume(struct pm8001_hba_info *pm8001_ha,
                        /* read header */
                        header_tmp = pm8001_read_32(msgHeader);
                        msgHeader_tmp = cpu_to_le32(header_tmp);
-                       if (0 != (msgHeader_tmp & 0x80000000)) {
+                       if (0 != (le32_to_cpu(msgHeader_tmp) & 0x80000000)) {
                                if (OPC_OUB_SKIP_ENTRY !=
-                                       (msgHeader_tmp & 0xfff)) {
+                                       (le32_to_cpu(msgHeader_tmp) & 0xfff)) {
                                        *messagePtr1 =
                                                ((u8 *)msgHeader) +
                                                sizeof(struct mpi_msg_hdr);
-                                       *pBC = (u8)((msgHeader_tmp >> 24) &
-                                               0x1f);
+                                       *pBC = (u8)((le32_to_cpu(msgHeader_tmp)
+                                               >> 24) & 0x1f);
                                        PM8001_IO_DBG(pm8001_ha,
                                                pm8001_printk(": CI=%d PI=%d "
                                                "msgHeader=%x\n",
@@ -1381,8 +1382,8 @@ static u32 mpi_msg_consume(struct pm8001_hba_info *pm8001_ha,
                                } else {
                                        circularQ->consumer_idx =
                                                (circularQ->consumer_idx +
-                                               ((msgHeader_tmp >> 24) & 0x1f))
-                                               % 256;
+                                               ((le32_to_cpu(msgHeader_tmp)
+                                               >> 24) & 0x1f)) % 256;
                                        msgHeader_tmp = 0;
                                        pm8001_write_32(msgHeader, 0, 0);
                                        /* update the CI of outbound queue */
@@ -1394,7 +1395,8 @@ static u32 mpi_msg_consume(struct pm8001_hba_info *pm8001_ha,
                        } else {
                                circularQ->consumer_idx =
                                        (circularQ->consumer_idx +
-                                       ((msgHeader_tmp >> 24) & 0x1f)) % 256;
+                                       ((le32_to_cpu(msgHeader_tmp) >> 24) &
+                                       0x1f)) % 256;
                                msgHeader_tmp = 0;
                                pm8001_write_32(msgHeader, 0, 0);
                                /* update the CI of outbound queue */
@@ -1410,7 +1412,8 @@ static u32 mpi_msg_consume(struct pm8001_hba_info *pm8001_ha,
                        producer_index = pm8001_read_32(pi_virt);
                        circularQ->producer_index = cpu_to_le32(producer_index);
                }
-       } while (circularQ->producer_index != circularQ->consumer_idx);
+       } while (le32_to_cpu(circularQ->producer_index) !=
+               circularQ->consumer_idx);
        /* while we don't have any more not-yet-delivered message */
        /* report empty */
        return MPI_IO_STATUS_BUSY;
@@ -3060,7 +3063,7 @@ static void pm8001_hw_event_ack_req(struct pm8001_hba_info *pm8001_ha,
 
        memset((u8 *)&payload, 0, sizeof(payload));
        circularQ = &pm8001_ha->inbnd_q_tbl[Qnum];
-       payload.tag = 1;
+       payload.tag = cpu_to_le32(1);
        payload.sea_phyid_portid = cpu_to_le32(((SEA & 0xFFFF) << 8) |
                ((phyId & 0x0F) << 4) | (port_id & 0x0F));
        payload.param0 = cpu_to_le32(param0);
@@ -3132,9 +3135,9 @@ hw_event_sas_phy_up(struct pm8001_hba_info *pm8001_ha, void *piomb)
        phy->phy_type |= PORT_TYPE_SAS;
        phy->identify.device_type = deviceType;
        phy->phy_attached = 1;
-       if (phy->identify.device_type == SAS_END_DEV)
+       if (phy->identify.device_type == SAS_END_DEVICE)
                phy->identify.target_port_protocols = SAS_PROTOCOL_SSP;
-       else if (phy->identify.device_type != NO_DEVICE)
+       else if (phy->identify.device_type != SAS_PHY_UNUSED)
                phy->identify.target_port_protocols = SAS_PROTOCOL_SMP;
        phy->sas_phy.oob_mode = SAS_OOB_MODE;
        sas_ha->notify_phy_event(&phy->sas_phy, PHYE_OOB_DONE);
@@ -3278,7 +3281,7 @@ static int mpi_reg_resp(struct pm8001_hba_info *pm8001_ha, void *piomb)
                (struct dev_reg_resp *)(piomb + 4);
 
        htag = le32_to_cpu(registerRespPayload->tag);
-       ccb = &pm8001_ha->ccb_info[registerRespPayload->tag];
+       ccb = &pm8001_ha->ccb_info[htag];
        pm8001_dev = ccb->device;
        status = le32_to_cpu(registerRespPayload->status);
        device_id = le32_to_cpu(registerRespPayload->device_id);
@@ -3352,7 +3355,7 @@ mpi_fw_flash_update_resp(struct pm8001_hba_info *pm8001_ha, void *piomb)
        struct fw_control_ex    fw_control_context;
        struct fw_flash_Update_resp *ppayload =
                (struct fw_flash_Update_resp *)(piomb + 4);
-       u32 tag = le32_to_cpu(ppayload->tag);
+       u32 tag = ppayload->tag;
        struct pm8001_ccb_info *ccb = &pm8001_ha->ccb_info[tag];
        status = le32_to_cpu(ppayload->status);
        memcpy(&fw_control_context,
@@ -3441,13 +3444,12 @@ mpi_task_abort_resp(struct pm8001_hba_info *pm8001_ha, void *piomb)
 
        struct task_abort_resp *pPayload =
                (struct task_abort_resp *)(piomb + 4);
-       ccb = &pm8001_ha->ccb_info[pPayload->tag];
-       t = ccb->task;
-
 
        status = le32_to_cpu(pPayload->status);
        tag = le32_to_cpu(pPayload->tag);
        scp = le32_to_cpu(pPayload->scp);
+       ccb = &pm8001_ha->ccb_info[tag];
+       t = ccb->task;
        PM8001_IO_DBG(pm8001_ha,
                pm8001_printk(" status = 0x%x\n", status));
        if (t == NULL)
@@ -3473,7 +3475,7 @@ mpi_task_abort_resp(struct pm8001_hba_info *pm8001_ha, void *piomb)
        t->task_state_flags &= ~SAS_TASK_AT_INITIATOR;
        t->task_state_flags |= SAS_TASK_STATE_DONE;
        spin_unlock_irqrestore(&t->task_state_lock, flags);
-       pm8001_ccb_task_free(pm8001_ha, t, ccb, pPayload->tag);
+       pm8001_ccb_task_free(pm8001_ha, t, ccb, tag);
        mb();
        t->task_done(t);
        return 0;
@@ -3700,7 +3702,7 @@ static int mpi_hw_event(struct pm8001_hba_info *pm8001_ha, void* piomb)
 static void process_one_iomb(struct pm8001_hba_info *pm8001_ha, void *piomb)
 {
        u32 pHeader = (u32)*(u32 *)piomb;
-       u8 opc = (u8)((le32_to_cpu(pHeader)) & 0xFFF);
+       u8 opc = (u8)(pHeader & 0xFFF);
 
        PM8001_MSG_DBG(pm8001_ha, pm8001_printk("process_one_iomb:"));
 
@@ -3867,7 +3869,7 @@ static int process_oq(struct pm8001_hba_info *pm8001_ha)
 {
        struct outbound_queue_table *circularQ;
        void *pMsg1 = NULL;
-       u8 bc = 0;
+       u8 uninitialized_var(bc);
        u32 ret = MPI_IO_STATUS_FAIL;
        unsigned long flags;
 
@@ -3882,11 +3884,10 @@ static int process_oq(struct pm8001_hba_info *pm8001_ha)
                        mpi_msg_free_set(pm8001_ha, pMsg1, circularQ, bc);
                }
                if (MPI_IO_STATUS_BUSY == ret) {
-                       u32 producer_idx;
                        /* Update the producer index from SPC */
-                       producer_idx = pm8001_read_32(circularQ->pi_virt);
-                       circularQ->producer_index = cpu_to_le32(producer_idx);
-                       if (circularQ->producer_index ==
+                       circularQ->producer_index =
+                               cpu_to_le32(pm8001_read_32(circularQ->pi_virt));
+                       if (le32_to_cpu(circularQ->producer_index) ==
                                circularQ->consumer_idx)
                                /* OQ is empty */
                                break;
@@ -3918,9 +3919,9 @@ pm8001_chip_make_sg(struct scatterlist *scatter, int nr, void *prd)
        }
 }
 
-static void build_smp_cmd(u32 deviceID, u32 hTag, struct smp_req *psmp_cmd)
+static void build_smp_cmd(u32 deviceID, __le32 hTag, struct smp_req *psmp_cmd)
 {
-       psmp_cmd->tag = cpu_to_le32(hTag);
+       psmp_cmd->tag = hTag;
        psmp_cmd->device_id = cpu_to_le32(deviceID);
        psmp_cmd->len_ip_ir = cpu_to_le32(1|(1 << 1));
 }
@@ -4004,7 +4005,7 @@ static int pm8001_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;
-       __le64 phys_addr;
+       u64 phys_addr;
        struct inbound_queue_table *circularQ;
        u32 opc = OPC_INB_SSPINIIOSTART;
        memset(&ssp_cmd, 0, sizeof(ssp_cmd));
@@ -4025,15 +4026,15 @@ static int pm8001_chip_ssp_io_req(struct pm8001_hba_info *pm8001_ha,
        /* fill in PRD (scatter/gather) table, if any */
        if (task->num_scatter > 1) {
                pm8001_chip_make_sg(task->scatter, ccb->n_elem, ccb->buf_prd);
-               phys_addr = cpu_to_le64(ccb->ccb_dma_handle +
-                               offsetof(struct pm8001_ccb_info, buf_prd[0]));
-               ssp_cmd.addr_low = lower_32_bits(phys_addr);
-               ssp_cmd.addr_high = upper_32_bits(phys_addr);
+               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 == 1) {
-               __le64 dma_addr = cpu_to_le64(sg_dma_address(task->scatter));
-               ssp_cmd.addr_low = lower_32_bits(dma_addr);
-               ssp_cmd.addr_high = upper_32_bits(dma_addr);
+               u64 dma_addr = sg_dma_address(task->scatter);
+               ssp_cmd.addr_low = cpu_to_le32(lower_32_bits(dma_addr));
+               ssp_cmd.addr_high = cpu_to_le32(upper_32_bits(dma_addr));
                ssp_cmd.len = cpu_to_le32(task->total_xfer_len);
                ssp_cmd.esgl = 0;
        } else if (task->num_scatter == 0) {
@@ -4056,7 +4057,7 @@ static int pm8001_chip_sata_req(struct pm8001_hba_info *pm8001_ha,
        int ret;
        struct sata_start_req sata_cmd;
        u32 hdr_tag, ncg_tag = 0;
-       __le64 phys_addr;
+       u64 phys_addr;
        u32 ATAP = 0x0;
        u32 dir;
        struct inbound_queue_table *circularQ;
@@ -4095,13 +4096,13 @@ static int pm8001_chip_sata_req(struct pm8001_hba_info *pm8001_ha,
        /* fill in PRD (scatter/gather) table, if any */
        if (task->num_scatter > 1) {
                pm8001_chip_make_sg(task->scatter, ccb->n_elem, ccb->buf_prd);
-               phys_addr = cpu_to_le64(ccb->ccb_dma_handle +
-                               offsetof(struct pm8001_ccb_info, buf_prd[0]));
+               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 == 1) {
-               __le64 dma_addr = cpu_to_le64(sg_dma_address(task->scatter));
+               u64 dma_addr = sg_dma_address(task->scatter);
                sata_cmd.addr_low = lower_32_bits(dma_addr);
                sata_cmd.addr_high = upper_32_bits(dma_addr);
                sata_cmd.len = cpu_to_le32(task->total_xfer_len);
@@ -4245,7 +4246,7 @@ static int pm8001_chip_dereg_dev_req(struct pm8001_hba_info *pm8001_ha,
 
        circularQ = &pm8001_ha->inbnd_q_tbl[0];
        memset(&payload, 0, sizeof(payload));
-       payload.tag = 1;
+       payload.tag = cpu_to_le32(1);
        payload.device_id = cpu_to_le32(device_id);
        PM8001_MSG_DBG(pm8001_ha,
                pm8001_printk("unregister device device_id = %d\n", device_id));
@@ -4269,7 +4270,7 @@ static int pm8001_chip_phy_ctl_req(struct pm8001_hba_info *pm8001_ha,
        u32 opc = OPC_INB_LOCAL_PHY_CONTROL;
        memset(&payload, 0, sizeof(payload));
        circularQ = &pm8001_ha->inbnd_q_tbl[0];
-       payload.tag = 1;
+       payload.tag = cpu_to_le32(1);
        payload.phyop_phyid =
                cpu_to_le32(((phy_op & 0xff) << 8) | (phyId & 0x0F));
        ret = mpi_build_cmd(pm8001_ha, circularQ, opc, &payload);
@@ -4563,8 +4564,10 @@ pm8001_chip_fw_flash_update_build(struct pm8001_hba_info *pm8001_ha,
        payload.cur_image_offset = cpu_to_le32(info->cur_image_offset);
        payload.total_image_len = cpu_to_le32(info->total_image_len);
        payload.len = info->sgl.im_len.len ;
-       payload.sgl_addr_lo = lower_32_bits(info->sgl.addr);
-       payload.sgl_addr_hi = upper_32_bits(info->sgl.addr);
+       payload.sgl_addr_lo =
+               cpu_to_le32(lower_32_bits(le64_to_cpu(info->sgl.addr)));
+       payload.sgl_addr_hi =
+               cpu_to_le32(upper_32_bits(le64_to_cpu(info->sgl.addr)));
        ret = mpi_build_cmd(pm8001_ha, circularQ, opc, &payload);
        return ret;
 }

diff --git a/drivers/scsi/pm8001/pm8001_hwi.h b/drivers/scsi/pm8001/pm8001_hwi.h
index 9091320..1a4611e 100644 (file)
--- a/drivers/scsi/pm8001/pm8001_hwi.h
+++ b/drivers/scsi/pm8001/pm8001_hwi.h
@@ -625,7 +625,7 @@ struct set_nvm_data_req {
        __le32  tag;
        __le32  len_ir_vpdd;
        __le32  vpd_offset;
-       u32     reserved[8];
+       __le32  reserved[8];
        __le32  resp_addr_lo;
        __le32  resp_addr_hi;
        __le32  resp_len;