2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2014 QLogic Corporation
5 * See LICENSE.qla2xxx for copyright and licensing details.
8 #include "qla_target.h"
10 * qla24xx_calc_iocbs() - Determine number of Command Type 3 and
11 * Continuation Type 1 IOCBs to allocate.
13 * @dsds: number of data segment decriptors needed
15 * Returns the number of IOCB entries needed to store @dsds.
17 static inline uint16_t
18 qla24xx_calc_iocbs(scsi_qla_host_t *vha, uint16_t dsds)
24 iocbs += (dsds - 1) / 5;
32 * qla2x00_debounce_register
36 * port = register address.
41 static __inline__ uint16_t
42 qla2x00_debounce_register(volatile uint16_t __iomem *addr)
44 volatile uint16_t first;
45 volatile uint16_t second;
48 first = RD_REG_WORD(addr);
51 second = RD_REG_WORD(addr);
52 } while (first != second);
58 qla2x00_poll(struct rsp_que *rsp)
61 struct qla_hw_data *ha = rsp->hw;
62 local_irq_save(flags);
66 ha->isp_ops->intr_handler(0, rsp);
67 local_irq_restore(flags);
70 static inline uint8_t *
71 host_to_fcp_swap(uint8_t *fcp, uint32_t bsize)
73 uint32_t *ifcp = (uint32_t *) fcp;
74 uint32_t *ofcp = (uint32_t *) fcp;
75 uint32_t iter = bsize >> 2;
78 *ofcp++ = swab32(*ifcp++);
84 host_to_adap(uint8_t *src, uint8_t *dst, uint32_t bsize)
86 uint32_t *isrc = (uint32_t *) src;
87 __le32 *odest = (__le32 *) dst;
88 uint32_t iter = bsize >> 2;
90 for ( ; iter--; isrc++)
91 *odest++ = cpu_to_le32(*isrc);
95 qla2x00_set_reserved_loop_ids(struct qla_hw_data *ha)
99 if (IS_FWI2_CAPABLE(ha))
102 for (i = 0; i < SNS_FIRST_LOOP_ID; i++)
103 set_bit(i, ha->loop_id_map);
104 set_bit(MANAGEMENT_SERVER, ha->loop_id_map);
105 set_bit(BROADCAST, ha->loop_id_map);
109 qla2x00_is_reserved_id(scsi_qla_host_t *vha, uint16_t loop_id)
111 struct qla_hw_data *ha = vha->hw;
112 if (IS_FWI2_CAPABLE(ha))
113 return (loop_id > NPH_LAST_HANDLE);
115 return ((loop_id > ha->max_loop_id && loop_id < SNS_FIRST_LOOP_ID) ||
116 loop_id == MANAGEMENT_SERVER || loop_id == BROADCAST);
120 qla2x00_clear_loop_id(fc_port_t *fcport) {
121 struct qla_hw_data *ha = fcport->vha->hw;
123 if (fcport->loop_id == FC_NO_LOOP_ID ||
124 qla2x00_is_reserved_id(fcport->vha, fcport->loop_id))
127 clear_bit(fcport->loop_id, ha->loop_id_map);
128 fcport->loop_id = FC_NO_LOOP_ID;
132 qla2x00_clean_dsd_pool(struct qla_hw_data *ha, srb_t *sp,
133 struct qla_tgt_cmd *tc)
135 struct dsd_dma *dsd_ptr, *tdsd_ptr;
136 struct crc_context *ctx;
139 ctx = (struct crc_context *)GET_CMD_CTX_SP(sp);
141 ctx = (struct crc_context *)tc->ctx;
147 /* clean up allocated prev pool */
148 list_for_each_entry_safe(dsd_ptr, tdsd_ptr,
149 &ctx->dsd_list, list) {
150 dma_pool_free(ha->dl_dma_pool, dsd_ptr->dsd_addr,
151 dsd_ptr->dsd_list_dma);
152 list_del(&dsd_ptr->list);
155 INIT_LIST_HEAD(&ctx->dsd_list);
159 qla2x00_set_fcport_state(fc_port_t *fcport, int state)
163 old_state = atomic_read(&fcport->state);
164 atomic_set(&fcport->state, state);
166 /* Don't print state transitions during initial allocation of fcport */
167 if (old_state && old_state != state) {
168 ql_dbg(ql_dbg_disc, fcport->vha, 0x207d,
169 "FCPort %8phC state transitioned from %s to %s - "
170 "portid=%02x%02x%02x.\n", fcport->port_name,
171 port_state_str[old_state], port_state_str[state],
172 fcport->d_id.b.domain, fcport->d_id.b.area,
173 fcport->d_id.b.al_pa);
178 qla2x00_hba_err_chk_enabled(srb_t *sp)
181 * Uncomment when corresponding SCSI changes are done.
183 if (!sp->cmd->prot_chk)
187 switch (scsi_get_prot_op(GET_CMD_SP(sp))) {
188 case SCSI_PROT_READ_STRIP:
189 case SCSI_PROT_WRITE_INSERT:
190 if (ql2xenablehba_err_chk >= 1)
193 case SCSI_PROT_READ_PASS:
194 case SCSI_PROT_WRITE_PASS:
195 if (ql2xenablehba_err_chk >= 2)
198 case SCSI_PROT_READ_INSERT:
199 case SCSI_PROT_WRITE_STRIP:
206 qla2x00_reset_active(scsi_qla_host_t *vha)
208 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
210 /* Test appropriate base-vha and vha flags. */
211 return test_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags) ||
212 test_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags) ||
213 test_bit(ISP_ABORT_RETRY, &base_vha->dpc_flags) ||
214 test_bit(ISP_ABORT_NEEDED, &vha->dpc_flags) ||
215 test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags);
218 static inline srb_t *
219 qla2xxx_get_qpair_sp(struct qla_qpair *qpair, fc_port_t *fcport, gfp_t flag)
224 QLA_QPAIR_MARK_BUSY(qpair, bail);
228 sp = mempool_alloc(qpair->srb_mempool, flag);
232 memset(sp, 0, sizeof(*sp));
235 sp->vha = qpair->vha;
238 QLA_QPAIR_MARK_NOT_BUSY(qpair);
243 qla2xxx_rel_qpair_sp(struct qla_qpair *qpair, srb_t *sp)
245 mempool_free(sp, qpair->srb_mempool);
246 QLA_QPAIR_MARK_NOT_BUSY(qpair);
249 static inline srb_t *
250 qla2x00_get_sp(scsi_qla_host_t *vha, fc_port_t *fcport, gfp_t flag)
255 QLA_VHA_MARK_BUSY(vha, bail);
259 sp = mempool_alloc(vha->hw->srb_mempool, flag);
263 memset(sp, 0, sizeof(*sp));
269 QLA_VHA_MARK_NOT_BUSY(vha);
274 qla2x00_rel_sp(srb_t *sp)
276 QLA_VHA_MARK_NOT_BUSY(sp->vha);
277 mempool_free(sp, sp->vha->hw->srb_mempool);
281 qla2x00_init_timer(srb_t *sp, unsigned long tmo)
283 init_timer(&sp->u.iocb_cmd.timer);
284 sp->u.iocb_cmd.timer.expires = jiffies + tmo * HZ;
285 sp->u.iocb_cmd.timer.data = (unsigned long)sp;
286 sp->u.iocb_cmd.timer.function = qla2x00_sp_timeout;
287 add_timer(&sp->u.iocb_cmd.timer);
288 sp->free = qla2x00_sp_free;
289 if (IS_QLAFX00(sp->vha->hw) && (sp->type == SRB_FXIOCB_DCMD))
290 init_completion(&sp->u.iocb_cmd.u.fxiocb.fxiocb_comp);
291 if (sp->type == SRB_ELS_DCMD)
292 init_completion(&sp->u.iocb_cmd.u.els_logo.comp);
296 qla2x00_gid_list_size(struct qla_hw_data *ha)
299 return sizeof(uint32_t) * 32;
301 return sizeof(struct gid_list_info) * ha->max_fibre_devices;
305 qla2x00_handle_mbx_completion(struct qla_hw_data *ha, int status)
307 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
308 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
309 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
310 clear_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags);
311 complete(&ha->mbx_intr_comp);
316 qla2x00_set_retry_delay_timestamp(fc_port_t *fcport, uint16_t retry_delay)
319 fcport->retry_delay_timestamp = jiffies +
320 (retry_delay * HZ / 10);