[SCSI] qla2xxx: Add ISP24xx IOCB manipulation routines.
Add ISP24xx IOCB manipulation routines. Add appropriate glue-code for ISP24xx support while manipulting IOCB packets. Add an ISP24xx specific 'start_scsi' routine due to command-type-7 layout changes. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Andrew Vasquez
James Bottomley
Родитель
459c537807
Коммит
2b6c0cee90
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@ -94,6 +94,7 @@ extern uint16_t qla2x00_calc_iocbs_64(uint16_t);
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extern void qla2x00_build_scsi_iocbs_32(srb_t *, cmd_entry_t *, uint16_t);
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extern void qla2x00_build_scsi_iocbs_64(srb_t *, cmd_entry_t *, uint16_t);
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extern int qla2x00_start_scsi(srb_t *sp);
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extern int qla24xx_start_scsi(srb_t *sp);
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int qla2x00_marker(scsi_qla_host_t *, uint16_t, uint16_t, uint8_t);
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int __qla2x00_marker(scsi_qla_host_t *, uint16_t, uint16_t, uint8_t);
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@ -236,6 +236,19 @@ qla2x00_delete_timer_from_cmd(srb_t *sp)
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}
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}
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static inline uint8_t *host_to_fcp_swap(uint8_t *, uint32_t);
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static inline uint8_t *
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host_to_fcp_swap(uint8_t *fcp, uint32_t bsize)
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{
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uint32_t *ifcp = (uint32_t *) fcp;
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uint32_t *ofcp = (uint32_t *) fcp;
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uint32_t iter = bsize >> 2;
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for (; iter ; iter--)
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*ofcp++ = swab32(*ifcp++);
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return fcp;
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}
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static inline int qla2x00_is_reserved_id(scsi_qla_host_t *, uint16_t);
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static inline int
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@ -468,29 +468,37 @@ queuing_error:
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*
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* Returns non-zero if a failure occured, else zero.
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*/
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int
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int
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__qla2x00_marker(scsi_qla_host_t *ha, uint16_t loop_id, uint16_t lun,
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uint8_t type)
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{
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mrk_entry_t *pkt;
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mrk_entry_t *mrk;
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struct mrk_entry_24xx *mrk24;
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pkt = (mrk_entry_t *)qla2x00_req_pkt(ha);
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if (pkt == NULL) {
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DEBUG2_3(printk("%s(): **** FAILED ****\n", __func__));
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mrk24 = NULL;
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mrk = (mrk_entry_t *)qla2x00_req_pkt(ha);
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if (mrk == NULL) {
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DEBUG2_3(printk("%s(%ld): failed to allocate Marker IOCB.\n",
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__func__, ha->host_no));
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return (QLA_FUNCTION_FAILED);
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}
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pkt->entry_type = MARKER_TYPE;
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pkt->modifier = type;
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mrk->entry_type = MARKER_TYPE;
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mrk->modifier = type;
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if (type != MK_SYNC_ALL) {
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pkt->lun = cpu_to_le16(lun);
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SET_TARGET_ID(ha, pkt->target, loop_id);
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if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
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mrk24 = (struct mrk_entry_24xx *) mrk;
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mrk24->nport_handle = cpu_to_le16(loop_id);
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mrk24->lun[1] = LSB(lun);
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mrk24->lun[2] = MSB(lun);
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} else {
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SET_TARGET_ID(ha, mrk->target, loop_id);
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mrk->lun = cpu_to_le16(lun);
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}
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}
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wmb();
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/* Issue command to ISP */
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qla2x00_isp_cmd(ha);
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return (QLA_SUCCESS);
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@ -521,7 +529,7 @@ qla2x00_marker(scsi_qla_host_t *ha, uint16_t loop_id, uint16_t lun,
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static request_t *
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qla2x00_req_pkt(scsi_qla_host_t *ha)
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{
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struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
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device_reg_t __iomem *reg = ha->iobase;
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request_t *pkt = NULL;
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uint16_t cnt;
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uint32_t *dword_ptr;
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@ -532,7 +540,12 @@ qla2x00_req_pkt(scsi_qla_host_t *ha)
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for (timer = HZ; timer; timer--) {
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if ((req_cnt + 2) >= ha->req_q_cnt) {
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/* Calculate number of free request entries. */
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cnt = qla2x00_debounce_register(ISP_REQ_Q_OUT(ha, reg));
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if (IS_QLA24XX(ha) || IS_QLA25XX(ha))
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cnt = (uint16_t)RD_REG_DWORD(
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®->isp24.req_q_out);
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else
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cnt = qla2x00_debounce_register(
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ISP_REQ_Q_OUT(ha, ®->isp));
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if (ha->req_ring_index < cnt)
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ha->req_q_cnt = cnt - ha->req_ring_index;
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else
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@ -586,7 +599,7 @@ qla2x00_req_pkt(scsi_qla_host_t *ha)
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void
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qla2x00_isp_cmd(scsi_qla_host_t *ha)
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{
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struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
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device_reg_t __iomem *reg = ha->iobase;
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DEBUG5(printk("%s(): IOCB data:\n", __func__));
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DEBUG5(qla2x00_dump_buffer(
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@ -601,6 +614,286 @@ qla2x00_isp_cmd(scsi_qla_host_t *ha)
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ha->request_ring_ptr++;
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/* Set chip new ring index. */
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WRT_REG_WORD(ISP_REQ_Q_IN(ha, reg), ha->req_ring_index);
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RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, reg)); /* PCI Posting. */
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if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
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WRT_REG_DWORD(®->isp24.req_q_in, ha->req_ring_index);
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RD_REG_DWORD_RELAXED(®->isp24.req_q_in);
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} else {
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WRT_REG_WORD(ISP_REQ_Q_IN(ha, ®->isp), ha->req_ring_index);
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RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, ®->isp));
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}
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}
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/**
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* qla24xx_calc_iocbs() - Determine number of Command Type 3 and
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* Continuation Type 1 IOCBs to allocate.
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*
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* @dsds: number of data segment decriptors needed
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*
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* Returns the number of IOCB entries needed to store @dsds.
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*/
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static inline uint16_t
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qla24xx_calc_iocbs(uint16_t dsds)
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{
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uint16_t iocbs;
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iocbs = 1;
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if (dsds > 1) {
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iocbs += (dsds - 1) / 5;
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if ((dsds - 1) % 5)
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iocbs++;
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}
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return iocbs;
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}
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/**
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* qla24xx_build_scsi_iocbs() - Build IOCB command utilizing Command Type 7
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* IOCB types.
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*
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* @sp: SRB command to process
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* @cmd_pkt: Command type 3 IOCB
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* @tot_dsds: Total number of segments to transfer
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*/
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static inline void
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qla24xx_build_scsi_iocbs(srb_t *sp, struct cmd_type_7 *cmd_pkt,
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uint16_t tot_dsds)
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{
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uint16_t avail_dsds;
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uint32_t *cur_dsd;
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scsi_qla_host_t *ha;
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struct scsi_cmnd *cmd;
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cmd = sp->cmd;
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/* Update entry type to indicate Command Type 3 IOCB */
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*((uint32_t *)(&cmd_pkt->entry_type)) =
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__constant_cpu_to_le32(COMMAND_TYPE_7);
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/* No data transfer */
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if (cmd->request_bufflen == 0 || cmd->sc_data_direction == DMA_NONE) {
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cmd_pkt->byte_count = __constant_cpu_to_le32(0);
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return;
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}
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ha = sp->ha;
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/* Set transfer direction */
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if (cmd->sc_data_direction == DMA_TO_DEVICE)
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cmd_pkt->task_mgmt_flags =
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__constant_cpu_to_le16(TMF_WRITE_DATA);
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else if (cmd->sc_data_direction == DMA_FROM_DEVICE)
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cmd_pkt->task_mgmt_flags =
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__constant_cpu_to_le16(TMF_READ_DATA);
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/* One DSD is available in the Command Type 3 IOCB */
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avail_dsds = 1;
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cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address;
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/* Load data segments */
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if (cmd->use_sg != 0) {
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struct scatterlist *cur_seg;
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struct scatterlist *end_seg;
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cur_seg = (struct scatterlist *)cmd->request_buffer;
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end_seg = cur_seg + tot_dsds;
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while (cur_seg < end_seg) {
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dma_addr_t sle_dma;
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cont_a64_entry_t *cont_pkt;
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/* Allocate additional continuation packets? */
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if (avail_dsds == 0) {
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/*
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* Five DSDs are available in the Continuation
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* Type 1 IOCB.
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*/
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cont_pkt = qla2x00_prep_cont_type1_iocb(ha);
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cur_dsd = (uint32_t *)cont_pkt->dseg_0_address;
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avail_dsds = 5;
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}
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sle_dma = sg_dma_address(cur_seg);
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*cur_dsd++ = cpu_to_le32(LSD(sle_dma));
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*cur_dsd++ = cpu_to_le32(MSD(sle_dma));
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*cur_dsd++ = cpu_to_le32(sg_dma_len(cur_seg));
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avail_dsds--;
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cur_seg++;
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}
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} else {
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*cur_dsd++ = cpu_to_le32(LSD(sp->dma_handle));
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*cur_dsd++ = cpu_to_le32(MSD(sp->dma_handle));
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*cur_dsd++ = cpu_to_le32(cmd->request_bufflen);
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}
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}
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/**
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* qla24xx_start_scsi() - Send a SCSI command to the ISP
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* @sp: command to send to the ISP
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*
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* Returns non-zero if a failure occured, else zero.
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*/
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int
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qla24xx_start_scsi(srb_t *sp)
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{
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int ret;
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unsigned long flags;
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scsi_qla_host_t *ha;
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struct scsi_cmnd *cmd;
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uint32_t *clr_ptr;
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uint32_t index;
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uint32_t handle;
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struct cmd_type_7 *cmd_pkt;
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struct scatterlist *sg;
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uint16_t cnt;
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uint16_t req_cnt;
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uint16_t tot_dsds;
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struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
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char tag[2];
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/* Setup device pointers. */
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ret = 0;
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ha = sp->ha;
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reg = &ha->iobase->isp24;
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cmd = sp->cmd;
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/* So we know we haven't pci_map'ed anything yet */
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tot_dsds = 0;
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/* Send marker if required */
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if (ha->marker_needed != 0) {
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if (qla2x00_marker(ha, 0, 0, MK_SYNC_ALL) != QLA_SUCCESS) {
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return QLA_FUNCTION_FAILED;
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}
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ha->marker_needed = 0;
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}
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/* Acquire ring specific lock */
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spin_lock_irqsave(&ha->hardware_lock, flags);
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/* Check for room in outstanding command list. */
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handle = ha->current_outstanding_cmd;
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for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) {
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handle++;
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if (handle == MAX_OUTSTANDING_COMMANDS)
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handle = 1;
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if (ha->outstanding_cmds[handle] == 0)
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break;
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}
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if (index == MAX_OUTSTANDING_COMMANDS)
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goto queuing_error;
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/* Map the sg table so we have an accurate count of sg entries needed */
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if (cmd->use_sg) {
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sg = (struct scatterlist *) cmd->request_buffer;
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tot_dsds = pci_map_sg(ha->pdev, sg, cmd->use_sg,
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cmd->sc_data_direction);
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if (tot_dsds == 0)
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goto queuing_error;
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} else if (cmd->request_bufflen) {
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dma_addr_t req_dma;
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req_dma = pci_map_single(ha->pdev, cmd->request_buffer,
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cmd->request_bufflen, cmd->sc_data_direction);
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if (dma_mapping_error(req_dma))
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goto queuing_error;
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sp->dma_handle = req_dma;
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tot_dsds = 1;
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}
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req_cnt = qla24xx_calc_iocbs(tot_dsds);
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if (ha->req_q_cnt < (req_cnt + 2)) {
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cnt = (uint16_t)RD_REG_DWORD_RELAXED(®->req_q_out);
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if (ha->req_ring_index < cnt)
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ha->req_q_cnt = cnt - ha->req_ring_index;
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else
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ha->req_q_cnt = ha->request_q_length -
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(ha->req_ring_index - cnt);
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}
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if (ha->req_q_cnt < (req_cnt + 2)) {
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if (cmd->use_sg)
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pci_unmap_sg(ha->pdev, sg, cmd->use_sg,
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cmd->sc_data_direction);
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goto queuing_error;
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}
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/* Build command packet. */
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ha->current_outstanding_cmd = handle;
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ha->outstanding_cmds[handle] = sp;
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sp->ha = ha;
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sp->cmd->host_scribble = (unsigned char *)(unsigned long)handle;
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ha->req_q_cnt -= req_cnt;
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cmd_pkt = (struct cmd_type_7 *)ha->request_ring_ptr;
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cmd_pkt->handle = handle;
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/* Zero out remaining portion of packet. */
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clr_ptr = (uint32_t *)cmd_pkt + 2;
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memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
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cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
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/* Set NPORT-ID and LUN number*/
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cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
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cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
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cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
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cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
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cmd_pkt->lun[1] = LSB(sp->cmd->device->lun);
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cmd_pkt->lun[2] = MSB(sp->cmd->device->lun);
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/* Update tagged queuing modifier -- default is TSK_SIMPLE (0). */
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if (scsi_populate_tag_msg(cmd, tag)) {
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switch (tag[0]) {
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case MSG_HEAD_TAG:
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cmd_pkt->task = TSK_HEAD_OF_QUEUE;
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break;
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case MSG_ORDERED_TAG:
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cmd_pkt->task = TSK_ORDERED;
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break;
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}
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}
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/* Load SCSI command packet. */
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memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len);
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host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb));
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cmd_pkt->byte_count = cpu_to_le32((uint32_t)cmd->request_bufflen);
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/* Build IOCB segments */
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qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds);
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/* Set total data segment count. */
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cmd_pkt->entry_count = (uint8_t)req_cnt;
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wmb();
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/* Adjust ring index. */
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ha->req_ring_index++;
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if (ha->req_ring_index == ha->request_q_length) {
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ha->req_ring_index = 0;
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ha->request_ring_ptr = ha->request_ring;
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} else
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ha->request_ring_ptr++;
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sp->flags |= SRB_DMA_VALID;
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sp->state = SRB_ACTIVE_STATE;
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/* Set chip new ring index. */
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WRT_REG_DWORD(®->req_q_in, ha->req_ring_index);
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RD_REG_DWORD_RELAXED(®->req_q_in); /* PCI Posting. */
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spin_unlock_irqrestore(&ha->hardware_lock, flags);
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return QLA_SUCCESS;
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queuing_error:
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if (cmd->use_sg && tot_dsds) {
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sg = (struct scatterlist *) cmd->request_buffer;
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pci_unmap_sg(ha->pdev, sg, cmd->use_sg,
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cmd->sc_data_direction);
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} else if (tot_dsds) {
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pci_unmap_single(ha->pdev, sp->dma_handle,
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cmd->request_bufflen, cmd->sc_data_direction);
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}
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spin_unlock_irqrestore(&ha->hardware_lock, flags);
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return QLA_FUNCTION_FAILED;
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}
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