326 lines
7.2 KiB
C
326 lines
7.2 KiB
C
/*
|
|
* QLogic Fibre Channel HBA Driver
|
|
* Copyright (c) 2003-2014 QLogic Corporation
|
|
*
|
|
* See LICENSE.qla2xxx for copyright and licensing details.
|
|
*/
|
|
|
|
#include "qla_target.h"
|
|
/**
|
|
* qla24xx_calc_iocbs() - Determine number of Command Type 3 and
|
|
* Continuation Type 1 IOCBs to allocate.
|
|
*
|
|
* @dsds: number of data segment decriptors needed
|
|
*
|
|
* Returns the number of IOCB entries needed to store @dsds.
|
|
*/
|
|
static inline uint16_t
|
|
qla24xx_calc_iocbs(scsi_qla_host_t *vha, uint16_t dsds)
|
|
{
|
|
uint16_t iocbs;
|
|
|
|
iocbs = 1;
|
|
if (dsds > 1) {
|
|
iocbs += (dsds - 1) / 5;
|
|
if ((dsds - 1) % 5)
|
|
iocbs++;
|
|
}
|
|
return iocbs;
|
|
}
|
|
|
|
/*
|
|
* qla2x00_debounce_register
|
|
* Debounce register.
|
|
*
|
|
* Input:
|
|
* port = register address.
|
|
*
|
|
* Returns:
|
|
* register value.
|
|
*/
|
|
static __inline__ uint16_t
|
|
qla2x00_debounce_register(volatile uint16_t __iomem *addr)
|
|
{
|
|
volatile uint16_t first;
|
|
volatile uint16_t second;
|
|
|
|
do {
|
|
first = RD_REG_WORD(addr);
|
|
barrier();
|
|
cpu_relax();
|
|
second = RD_REG_WORD(addr);
|
|
} while (first != second);
|
|
|
|
return (first);
|
|
}
|
|
|
|
static inline void
|
|
qla2x00_poll(struct rsp_que *rsp)
|
|
{
|
|
unsigned long flags;
|
|
struct qla_hw_data *ha = rsp->hw;
|
|
local_irq_save(flags);
|
|
if (IS_P3P_TYPE(ha))
|
|
qla82xx_poll(0, rsp);
|
|
else
|
|
ha->isp_ops->intr_handler(0, rsp);
|
|
local_irq_restore(flags);
|
|
}
|
|
|
|
static inline uint8_t *
|
|
host_to_fcp_swap(uint8_t *fcp, uint32_t bsize)
|
|
{
|
|
uint32_t *ifcp = (uint32_t *) fcp;
|
|
uint32_t *ofcp = (uint32_t *) fcp;
|
|
uint32_t iter = bsize >> 2;
|
|
|
|
for (; iter ; iter--)
|
|
*ofcp++ = swab32(*ifcp++);
|
|
|
|
return fcp;
|
|
}
|
|
|
|
static inline void
|
|
host_to_adap(uint8_t *src, uint8_t *dst, uint32_t bsize)
|
|
{
|
|
uint32_t *isrc = (uint32_t *) src;
|
|
__le32 *odest = (__le32 *) dst;
|
|
uint32_t iter = bsize >> 2;
|
|
|
|
for ( ; iter--; isrc++)
|
|
*odest++ = cpu_to_le32(*isrc);
|
|
}
|
|
|
|
static inline void
|
|
qla2x00_set_reserved_loop_ids(struct qla_hw_data *ha)
|
|
{
|
|
int i;
|
|
|
|
if (IS_FWI2_CAPABLE(ha))
|
|
return;
|
|
|
|
for (i = 0; i < SNS_FIRST_LOOP_ID; i++)
|
|
set_bit(i, ha->loop_id_map);
|
|
set_bit(MANAGEMENT_SERVER, ha->loop_id_map);
|
|
set_bit(BROADCAST, ha->loop_id_map);
|
|
}
|
|
|
|
static inline int
|
|
qla2x00_is_reserved_id(scsi_qla_host_t *vha, uint16_t loop_id)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
if (IS_FWI2_CAPABLE(ha))
|
|
return (loop_id > NPH_LAST_HANDLE);
|
|
|
|
return ((loop_id > ha->max_loop_id && loop_id < SNS_FIRST_LOOP_ID) ||
|
|
loop_id == MANAGEMENT_SERVER || loop_id == BROADCAST);
|
|
}
|
|
|
|
static inline void
|
|
qla2x00_clear_loop_id(fc_port_t *fcport) {
|
|
struct qla_hw_data *ha = fcport->vha->hw;
|
|
|
|
if (fcport->loop_id == FC_NO_LOOP_ID ||
|
|
qla2x00_is_reserved_id(fcport->vha, fcport->loop_id))
|
|
return;
|
|
|
|
clear_bit(fcport->loop_id, ha->loop_id_map);
|
|
fcport->loop_id = FC_NO_LOOP_ID;
|
|
}
|
|
|
|
static inline void
|
|
qla2x00_clean_dsd_pool(struct qla_hw_data *ha, struct crc_context *ctx)
|
|
{
|
|
struct dsd_dma *dsd, *tdsd;
|
|
|
|
/* clean up allocated prev pool */
|
|
list_for_each_entry_safe(dsd, tdsd, &ctx->dsd_list, list) {
|
|
dma_pool_free(ha->dl_dma_pool, dsd->dsd_addr,
|
|
dsd->dsd_list_dma);
|
|
list_del(&dsd->list);
|
|
kfree(dsd);
|
|
}
|
|
INIT_LIST_HEAD(&ctx->dsd_list);
|
|
}
|
|
|
|
static inline void
|
|
qla2x00_set_fcport_state(fc_port_t *fcport, int state)
|
|
{
|
|
int old_state;
|
|
|
|
old_state = atomic_read(&fcport->state);
|
|
atomic_set(&fcport->state, state);
|
|
|
|
/* Don't print state transitions during initial allocation of fcport */
|
|
if (old_state && old_state != state) {
|
|
ql_dbg(ql_dbg_disc, fcport->vha, 0x207d,
|
|
"FCPort %8phC state transitioned from %s to %s - "
|
|
"portid=%02x%02x%02x.\n", fcport->port_name,
|
|
port_state_str[old_state], port_state_str[state],
|
|
fcport->d_id.b.domain, fcport->d_id.b.area,
|
|
fcport->d_id.b.al_pa);
|
|
}
|
|
}
|
|
|
|
static inline int
|
|
qla2x00_hba_err_chk_enabled(srb_t *sp)
|
|
{
|
|
/*
|
|
* Uncomment when corresponding SCSI changes are done.
|
|
*
|
|
if (!sp->cmd->prot_chk)
|
|
return 0;
|
|
*
|
|
*/
|
|
switch (scsi_get_prot_op(GET_CMD_SP(sp))) {
|
|
case SCSI_PROT_READ_STRIP:
|
|
case SCSI_PROT_WRITE_INSERT:
|
|
if (ql2xenablehba_err_chk >= 1)
|
|
return 1;
|
|
break;
|
|
case SCSI_PROT_READ_PASS:
|
|
case SCSI_PROT_WRITE_PASS:
|
|
if (ql2xenablehba_err_chk >= 2)
|
|
return 1;
|
|
break;
|
|
case SCSI_PROT_READ_INSERT:
|
|
case SCSI_PROT_WRITE_STRIP:
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static inline int
|
|
qla2x00_reset_active(scsi_qla_host_t *vha)
|
|
{
|
|
scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
|
|
|
|
/* Test appropriate base-vha and vha flags. */
|
|
return test_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags) ||
|
|
test_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags) ||
|
|
test_bit(ISP_ABORT_RETRY, &base_vha->dpc_flags) ||
|
|
test_bit(ISP_ABORT_NEEDED, &vha->dpc_flags) ||
|
|
test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags);
|
|
}
|
|
|
|
static inline srb_t *
|
|
qla2xxx_get_qpair_sp(struct qla_qpair *qpair, fc_port_t *fcport, gfp_t flag)
|
|
{
|
|
srb_t *sp = NULL;
|
|
uint8_t bail;
|
|
|
|
QLA_QPAIR_MARK_BUSY(qpair, bail);
|
|
if (unlikely(bail))
|
|
return NULL;
|
|
|
|
sp = mempool_alloc(qpair->srb_mempool, flag);
|
|
if (!sp)
|
|
goto done;
|
|
|
|
memset(sp, 0, sizeof(*sp));
|
|
sp->fcport = fcport;
|
|
sp->iocbs = 1;
|
|
sp->vha = qpair->vha;
|
|
done:
|
|
if (!sp)
|
|
QLA_QPAIR_MARK_NOT_BUSY(qpair);
|
|
return sp;
|
|
}
|
|
|
|
static inline void
|
|
qla2xxx_rel_qpair_sp(struct qla_qpair *qpair, srb_t *sp)
|
|
{
|
|
mempool_free(sp, qpair->srb_mempool);
|
|
QLA_QPAIR_MARK_NOT_BUSY(qpair);
|
|
}
|
|
|
|
static inline srb_t *
|
|
qla2x00_get_sp(scsi_qla_host_t *vha, fc_port_t *fcport, gfp_t flag)
|
|
{
|
|
srb_t *sp = NULL;
|
|
uint8_t bail;
|
|
|
|
QLA_VHA_MARK_BUSY(vha, bail);
|
|
if (unlikely(bail))
|
|
return NULL;
|
|
|
|
sp = mempool_alloc(vha->hw->srb_mempool, flag);
|
|
if (!sp)
|
|
goto done;
|
|
|
|
memset(sp, 0, sizeof(*sp));
|
|
sp->fcport = fcport;
|
|
sp->iocbs = 1;
|
|
sp->vha = vha;
|
|
done:
|
|
if (!sp)
|
|
QLA_VHA_MARK_NOT_BUSY(vha);
|
|
return sp;
|
|
}
|
|
|
|
static inline void
|
|
qla2x00_rel_sp(srb_t *sp)
|
|
{
|
|
QLA_VHA_MARK_NOT_BUSY(sp->vha);
|
|
mempool_free(sp, sp->vha->hw->srb_mempool);
|
|
}
|
|
|
|
static inline void
|
|
qla2x00_init_timer(srb_t *sp, unsigned long tmo)
|
|
{
|
|
init_timer(&sp->u.iocb_cmd.timer);
|
|
sp->u.iocb_cmd.timer.expires = jiffies + tmo * HZ;
|
|
sp->u.iocb_cmd.timer.data = (unsigned long)sp;
|
|
sp->u.iocb_cmd.timer.function = qla2x00_sp_timeout;
|
|
add_timer(&sp->u.iocb_cmd.timer);
|
|
sp->free = qla2x00_sp_free;
|
|
if (IS_QLAFX00(sp->vha->hw) && (sp->type == SRB_FXIOCB_DCMD))
|
|
init_completion(&sp->u.iocb_cmd.u.fxiocb.fxiocb_comp);
|
|
if (sp->type == SRB_ELS_DCMD)
|
|
init_completion(&sp->u.iocb_cmd.u.els_logo.comp);
|
|
}
|
|
|
|
static inline int
|
|
qla2x00_gid_list_size(struct qla_hw_data *ha)
|
|
{
|
|
if (IS_QLAFX00(ha))
|
|
return sizeof(uint32_t) * 32;
|
|
else
|
|
return sizeof(struct gid_list_info) * ha->max_fibre_devices;
|
|
}
|
|
|
|
static inline void
|
|
qla2x00_handle_mbx_completion(struct qla_hw_data *ha, int status)
|
|
{
|
|
if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
|
|
(status & MBX_INTERRUPT) && ha->flags.mbox_int) {
|
|
set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
|
|
clear_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags);
|
|
complete(&ha->mbx_intr_comp);
|
|
}
|
|
}
|
|
|
|
static inline void
|
|
qla2x00_set_retry_delay_timestamp(fc_port_t *fcport, uint16_t retry_delay)
|
|
{
|
|
if (retry_delay)
|
|
fcport->retry_delay_timestamp = jiffies +
|
|
(retry_delay * HZ / 10);
|
|
}
|
|
|
|
static inline bool
|
|
qla_is_exch_offld_enabled(struct scsi_qla_host *vha)
|
|
{
|
|
if (qla_ini_mode_enabled(vha) &&
|
|
(ql2xiniexchg > FW_DEF_EXCHANGES_CNT))
|
|
return true;
|
|
else if (qla_tgt_mode_enabled(vha) &&
|
|
(ql2xexchoffld > FW_DEF_EXCHANGES_CNT))
|
|
return true;
|
|
else if (qla_dual_mode_enabled(vha) &&
|
|
((ql2xiniexchg + ql2xexchoffld) > FW_DEF_EXCHANGES_CNT))
|
|
return true;
|
|
else
|
|
return false;
|
|
}
|