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![Shyam Sundar](/assets/img/avatar_default.png)
This patch adds a shadow variable to hold disc_state history for the fcport and prints state transition when the logging is enabled. Link: https://lore.kernel.org/r/20191217220617.28084-4-hmadhani@marvell.com Signed-off-by: Shyam Sundar <ssundar@marvell.com> Signed-off-by: Himanshu Madhani <hmadhani@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
345 lines
7.3 KiB
C
345 lines
7.3 KiB
C
/*
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* QLogic Fibre Channel HBA Driver
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* Copyright (c) 2003-2014 QLogic Corporation
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*
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* See LICENSE.qla2xxx for copyright and licensing details.
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*/
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#include "qla_target.h"
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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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* @vha: HA context
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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(scsi_qla_host_t *vha, 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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* qla2x00_debounce_register
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* Debounce register.
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*
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* Input:
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* port = register address.
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*
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* Returns:
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* register value.
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*/
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static __inline__ uint16_t
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qla2x00_debounce_register(volatile uint16_t __iomem *addr)
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{
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volatile uint16_t first;
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volatile uint16_t second;
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do {
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first = RD_REG_WORD(addr);
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barrier();
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cpu_relax();
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second = RD_REG_WORD(addr);
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} while (first != second);
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return (first);
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}
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static inline void
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qla2x00_poll(struct rsp_que *rsp)
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{
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struct qla_hw_data *ha = rsp->hw;
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if (IS_P3P_TYPE(ha))
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qla82xx_poll(0, rsp);
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else
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ha->isp_ops->intr_handler(0, rsp);
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}
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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 void
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host_to_adap(uint8_t *src, uint8_t *dst, uint32_t bsize)
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{
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uint32_t *isrc = (uint32_t *) src;
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__le32 *odest = (__le32 *) dst;
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uint32_t iter = bsize >> 2;
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for ( ; iter--; isrc++)
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*odest++ = cpu_to_le32(*isrc);
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}
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static inline void
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qla2x00_clean_dsd_pool(struct qla_hw_data *ha, struct crc_context *ctx)
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{
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struct dsd_dma *dsd, *tdsd;
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/* clean up allocated prev pool */
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list_for_each_entry_safe(dsd, tdsd, &ctx->dsd_list, list) {
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dma_pool_free(ha->dl_dma_pool, dsd->dsd_addr,
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dsd->dsd_list_dma);
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list_del(&dsd->list);
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kfree(dsd);
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}
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INIT_LIST_HEAD(&ctx->dsd_list);
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}
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static inline void
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qla2x00_set_fcport_disc_state(fc_port_t *fcport, int state)
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{
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int old_val;
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uint8_t shiftbits, mask;
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/* This will have to change when the max no. of states > 16 */
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shiftbits = 4;
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mask = (1 << shiftbits) - 1;
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fcport->disc_state = state;
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while (1) {
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old_val = atomic_read(&fcport->shadow_disc_state);
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if (old_val == atomic_cmpxchg(&fcport->shadow_disc_state,
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old_val, (old_val << shiftbits) | state)) {
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ql_dbg(ql_dbg_disc, fcport->vha, 0x2134,
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"FCPort %8phC disc_state transition: %s to %s - portid=%06x.\n",
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fcport->port_name, port_dstate_str[old_val & mask],
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port_dstate_str[state], fcport->d_id.b24);
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return;
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}
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}
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}
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static inline int
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qla2x00_hba_err_chk_enabled(srb_t *sp)
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{
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/*
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* Uncomment when corresponding SCSI changes are done.
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*
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if (!sp->cmd->prot_chk)
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return 0;
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*
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*/
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switch (scsi_get_prot_op(GET_CMD_SP(sp))) {
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case SCSI_PROT_READ_STRIP:
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case SCSI_PROT_WRITE_INSERT:
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if (ql2xenablehba_err_chk >= 1)
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return 1;
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break;
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case SCSI_PROT_READ_PASS:
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case SCSI_PROT_WRITE_PASS:
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if (ql2xenablehba_err_chk >= 2)
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return 1;
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break;
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case SCSI_PROT_READ_INSERT:
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case SCSI_PROT_WRITE_STRIP:
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return 1;
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}
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return 0;
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}
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static inline int
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qla2x00_reset_active(scsi_qla_host_t *vha)
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{
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scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
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/* Test appropriate base-vha and vha flags. */
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return test_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags) ||
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test_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags) ||
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test_bit(ISP_ABORT_RETRY, &base_vha->dpc_flags) ||
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test_bit(ISP_ABORT_NEEDED, &vha->dpc_flags) ||
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test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags);
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}
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static inline int
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qla2x00_chip_is_down(scsi_qla_host_t *vha)
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{
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return (qla2x00_reset_active(vha) || !vha->hw->flags.fw_started);
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}
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static void qla2xxx_init_sp(srb_t *sp, scsi_qla_host_t *vha,
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struct qla_qpair *qpair, fc_port_t *fcport)
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{
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memset(sp, 0, sizeof(*sp));
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sp->fcport = fcport;
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sp->iocbs = 1;
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sp->vha = vha;
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sp->qpair = qpair;
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sp->cmd_type = TYPE_SRB;
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INIT_LIST_HEAD(&sp->elem);
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}
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static inline srb_t *
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qla2xxx_get_qpair_sp(scsi_qla_host_t *vha, struct qla_qpair *qpair,
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fc_port_t *fcport, gfp_t flag)
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{
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srb_t *sp = NULL;
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uint8_t bail;
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QLA_QPAIR_MARK_BUSY(qpair, bail);
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if (unlikely(bail))
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return NULL;
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sp = mempool_alloc(qpair->srb_mempool, flag);
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if (sp)
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qla2xxx_init_sp(sp, vha, qpair, fcport);
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else
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QLA_QPAIR_MARK_NOT_BUSY(qpair);
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return sp;
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}
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static inline void
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qla2xxx_rel_qpair_sp(struct qla_qpair *qpair, srb_t *sp)
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{
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sp->qpair = NULL;
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mempool_free(sp, qpair->srb_mempool);
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QLA_QPAIR_MARK_NOT_BUSY(qpair);
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}
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static inline srb_t *
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qla2x00_get_sp(scsi_qla_host_t *vha, fc_port_t *fcport, gfp_t flag)
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{
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srb_t *sp = NULL;
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uint8_t bail;
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struct qla_qpair *qpair;
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QLA_VHA_MARK_BUSY(vha, bail);
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if (unlikely(bail))
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return NULL;
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qpair = vha->hw->base_qpair;
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sp = qla2xxx_get_qpair_sp(vha, qpair, fcport, flag);
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if (!sp)
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goto done;
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sp->vha = vha;
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done:
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if (!sp)
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QLA_VHA_MARK_NOT_BUSY(vha);
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return sp;
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}
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static inline void
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qla2x00_rel_sp(srb_t *sp)
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{
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QLA_VHA_MARK_NOT_BUSY(sp->vha);
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qla2xxx_rel_qpair_sp(sp->qpair, sp);
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}
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static inline int
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qla2x00_gid_list_size(struct qla_hw_data *ha)
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{
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if (IS_QLAFX00(ha))
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return sizeof(uint32_t) * 32;
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else
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return sizeof(struct gid_list_info) * ha->max_fibre_devices;
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}
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static inline void
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qla2x00_handle_mbx_completion(struct qla_hw_data *ha, int status)
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{
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if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
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(status & MBX_INTERRUPT) && ha->flags.mbox_int) {
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set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
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clear_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags);
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complete(&ha->mbx_intr_comp);
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}
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}
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static inline void
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qla2x00_set_retry_delay_timestamp(fc_port_t *fcport, uint16_t retry_delay)
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{
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if (retry_delay)
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fcport->retry_delay_timestamp = jiffies +
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(retry_delay * HZ / 10);
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}
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static inline bool
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qla_is_exch_offld_enabled(struct scsi_qla_host *vha)
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{
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if (qla_ini_mode_enabled(vha) &&
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(vha->ql2xiniexchg > FW_DEF_EXCHANGES_CNT))
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return true;
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else if (qla_tgt_mode_enabled(vha) &&
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(vha->ql2xexchoffld > FW_DEF_EXCHANGES_CNT))
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return true;
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else if (qla_dual_mode_enabled(vha) &&
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((vha->ql2xiniexchg + vha->ql2xexchoffld) > FW_DEF_EXCHANGES_CNT))
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return true;
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else
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return false;
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}
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static inline void
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qla_cpu_update(struct qla_qpair *qpair, uint16_t cpuid)
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{
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qpair->cpuid = cpuid;
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if (!list_empty(&qpair->hints_list)) {
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struct qla_qpair_hint *h;
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list_for_each_entry(h, &qpair->hints_list, hint_elem)
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h->cpuid = qpair->cpuid;
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}
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}
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static inline struct qla_qpair_hint *
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qla_qpair_to_hint(struct qla_tgt *tgt, struct qla_qpair *qpair)
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{
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struct qla_qpair_hint *h;
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u16 i;
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for (i = 0; i < tgt->ha->max_qpairs + 1; i++) {
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h = &tgt->qphints[i];
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if (h->qpair == qpair)
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return h;
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}
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return NULL;
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}
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static inline void
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qla_83xx_start_iocbs(struct qla_qpair *qpair)
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{
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struct req_que *req = qpair->req;
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req->ring_index++;
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if (req->ring_index == req->length) {
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req->ring_index = 0;
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req->ring_ptr = req->ring;
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} else
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req->ring_ptr++;
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WRT_REG_DWORD(req->req_q_in, req->ring_index);
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}
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static inline int
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qla2xxx_get_fc4_priority(struct scsi_qla_host *vha)
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{
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uint32_t data;
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data =
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((uint8_t *)vha->hw->nvram)[NVRAM_DUAL_FCP_NVME_FLAG_OFFSET];
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return (data >> 6) & BIT_0 ? FC4_PRIORITY_FCP : FC4_PRIORITY_NVME;
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}
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