1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * QLogic Fibre Channel HBA Driver
4 * Copyright (c) 2003-2014 QLogic Corporation
7 #include "qla_target.h"
9 * qla24xx_calc_iocbs() - Determine number of Command Type 3 and
10 * Continuation Type 1 IOCBs to allocate.
13 * @dsds: number of data segment descriptors 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 __le16 __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)
60 struct qla_hw_data *ha = rsp->hw;
65 ha->isp_ops->intr_handler(0, rsp);
68 static inline uint8_t *
69 host_to_fcp_swap(uint8_t *fcp, uint32_t bsize)
71 uint32_t *ifcp = (uint32_t *) fcp;
72 uint32_t *ofcp = (uint32_t *) fcp;
73 uint32_t iter = bsize >> 2;
76 *ofcp++ = swab32(*ifcp++);
82 host_to_adap(uint8_t *src, uint8_t *dst, uint32_t bsize)
84 uint32_t *isrc = (uint32_t *) src;
85 __le32 *odest = (__le32 *) dst;
86 uint32_t iter = bsize >> 2;
88 for ( ; iter--; isrc++)
89 *odest++ = cpu_to_le32(*isrc);
93 qla2x00_clean_dsd_pool(struct qla_hw_data *ha, struct crc_context *ctx)
95 struct dsd_dma *dsd, *tdsd;
97 /* clean up allocated prev pool */
98 list_for_each_entry_safe(dsd, tdsd, &ctx->dsd_list, list) {
99 dma_pool_free(ha->dl_dma_pool, dsd->dsd_addr,
101 list_del(&dsd->list);
104 INIT_LIST_HEAD(&ctx->dsd_list);
108 qla2x00_set_fcport_disc_state(fc_port_t *fcport, int state)
111 uint8_t shiftbits, mask;
113 /* This will have to change when the max no. of states > 16 */
115 mask = (1 << shiftbits) - 1;
117 fcport->disc_state = state;
119 old_val = atomic_read(&fcport->shadow_disc_state);
120 if (old_val == atomic_cmpxchg(&fcport->shadow_disc_state,
121 old_val, (old_val << shiftbits) | state)) {
122 ql_dbg(ql_dbg_disc, fcport->vha, 0x2134,
123 "FCPort %8phC disc_state transition: %s to %s - portid=%06x.\n",
124 fcport->port_name, port_dstate_str[old_val & mask],
125 port_dstate_str[state], fcport->d_id.b24);
132 qla2x00_hba_err_chk_enabled(srb_t *sp)
135 * Uncomment when corresponding SCSI changes are done.
137 if (!sp->cmd->prot_chk)
141 switch (scsi_get_prot_op(GET_CMD_SP(sp))) {
142 case SCSI_PROT_READ_STRIP:
143 case SCSI_PROT_WRITE_INSERT:
144 if (ql2xenablehba_err_chk >= 1)
147 case SCSI_PROT_READ_PASS:
148 case SCSI_PROT_WRITE_PASS:
149 if (ql2xenablehba_err_chk >= 2)
152 case SCSI_PROT_READ_INSERT:
153 case SCSI_PROT_WRITE_STRIP:
160 qla2x00_reset_active(scsi_qla_host_t *vha)
162 scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
164 /* Test appropriate base-vha and vha flags. */
165 return test_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags) ||
166 test_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags) ||
167 test_bit(ISP_ABORT_RETRY, &base_vha->dpc_flags) ||
168 test_bit(ISP_ABORT_NEEDED, &vha->dpc_flags) ||
169 test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags);
173 qla2x00_chip_is_down(scsi_qla_host_t *vha)
175 return (qla2x00_reset_active(vha) || !vha->hw->flags.fw_started);
178 static void qla2xxx_init_sp(srb_t *sp, scsi_qla_host_t *vha,
179 struct qla_qpair *qpair, fc_port_t *fcport)
181 memset(sp, 0, sizeof(*sp));
186 sp->cmd_type = TYPE_SRB;
187 INIT_LIST_HEAD(&sp->elem);
190 static inline srb_t *
191 qla2xxx_get_qpair_sp(scsi_qla_host_t *vha, struct qla_qpair *qpair,
192 fc_port_t *fcport, gfp_t flag)
197 QLA_QPAIR_MARK_BUSY(qpair, bail);
201 sp = mempool_alloc(qpair->srb_mempool, flag);
203 qla2xxx_init_sp(sp, vha, qpair, fcport);
205 QLA_QPAIR_MARK_NOT_BUSY(qpair);
209 void qla2xxx_rel_done_warning(srb_t *sp, int res);
210 void qla2xxx_rel_free_warning(srb_t *sp);
213 qla2xxx_rel_qpair_sp(struct qla_qpair *qpair, srb_t *sp)
216 sp->done = qla2xxx_rel_done_warning;
217 sp->free = qla2xxx_rel_free_warning;
218 mempool_free(sp, qpair->srb_mempool);
219 QLA_QPAIR_MARK_NOT_BUSY(qpair);
222 static inline srb_t *
223 qla2x00_get_sp(scsi_qla_host_t *vha, fc_port_t *fcport, gfp_t flag)
227 struct qla_qpair *qpair;
229 QLA_VHA_MARK_BUSY(vha, bail);
233 qpair = vha->hw->base_qpair;
234 sp = qla2xxx_get_qpair_sp(vha, qpair, fcport, flag);
241 QLA_VHA_MARK_NOT_BUSY(vha);
246 qla2x00_rel_sp(srb_t *sp)
248 QLA_VHA_MARK_NOT_BUSY(sp->vha);
249 qla2xxx_rel_qpair_sp(sp->qpair, sp);
253 qla2x00_gid_list_size(struct qla_hw_data *ha)
256 return sizeof(uint32_t) * 32;
258 return sizeof(struct gid_list_info) * ha->max_fibre_devices;
262 qla2x00_handle_mbx_completion(struct qla_hw_data *ha, int status)
264 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
265 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
266 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
267 clear_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags);
268 complete(&ha->mbx_intr_comp);
273 qla2x00_set_retry_delay_timestamp(fc_port_t *fcport, uint16_t sts_qual)
277 #define SQ_SCOPE_MASK 0xc000 /* SAM-6 rev5 5.3.2 */
278 #define SQ_SCOPE_SHIFT 14
279 #define SQ_QUAL_MASK 0x3fff
281 #define SQ_MAX_WAIT_SEC 60 /* Max I/O hold off time in seconds. */
282 #define SQ_MAX_WAIT_TIME (SQ_MAX_WAIT_SEC * 10) /* in 100ms. */
284 if (!sts_qual) /* Common case. */
287 scope = (sts_qual & SQ_SCOPE_MASK) >> SQ_SCOPE_SHIFT;
288 /* Handle only scope 1 or 2, which is for I-T nexus. */
289 if (scope != 1 && scope != 2)
292 /* Skip processing, if retry delay timer is already in effect. */
293 if (fcport->retry_delay_timestamp &&
294 time_before(jiffies, fcport->retry_delay_timestamp))
297 qual = sts_qual & SQ_QUAL_MASK;
298 if (qual < 1 || qual > 0x3fef)
300 qual = min(qual, (u16)SQ_MAX_WAIT_TIME);
302 /* qual is expressed in 100ms increments. */
303 fcport->retry_delay_timestamp = jiffies + (qual * HZ / 10);
305 ql_log(ql_log_warn, fcport->vha, 0x5101,
306 "%8phC: I/O throttling requested (status qualifier = %04xh), holding off I/Os for %ums.\n",
307 fcport->port_name, sts_qual, qual * 100);
311 qla_is_exch_offld_enabled(struct scsi_qla_host *vha)
313 if (qla_ini_mode_enabled(vha) &&
314 (vha->ql2xiniexchg > FW_DEF_EXCHANGES_CNT))
316 else if (qla_tgt_mode_enabled(vha) &&
317 (vha->ql2xexchoffld > FW_DEF_EXCHANGES_CNT))
319 else if (qla_dual_mode_enabled(vha) &&
320 ((vha->ql2xiniexchg + vha->ql2xexchoffld) > FW_DEF_EXCHANGES_CNT))
327 qla_cpu_update(struct qla_qpair *qpair, uint16_t cpuid)
329 qpair->cpuid = cpuid;
331 if (!list_empty(&qpair->hints_list)) {
332 struct qla_qpair_hint *h;
334 list_for_each_entry(h, &qpair->hints_list, hint_elem)
335 h->cpuid = qpair->cpuid;
339 static inline struct qla_qpair_hint *
340 qla_qpair_to_hint(struct qla_tgt *tgt, struct qla_qpair *qpair)
342 struct qla_qpair_hint *h;
345 for (i = 0; i < tgt->ha->max_qpairs + 1; i++) {
346 h = &tgt->qphints[i];
347 if (h->qpair == qpair)
355 qla_83xx_start_iocbs(struct qla_qpair *qpair)
357 struct req_que *req = qpair->req;
360 if (req->ring_index == req->length) {
362 req->ring_ptr = req->ring;
366 wrt_reg_dword(req->req_q_in, req->ring_index);
370 qla2xxx_get_fc4_priority(struct scsi_qla_host *vha)
375 ((uint8_t *)vha->hw->nvram)[NVRAM_DUAL_FCP_NVME_FLAG_OFFSET];
378 return (data >> 6) & BIT_0 ? FC4_PRIORITY_FCP : FC4_PRIORITY_NVME;
387 qla_get_iocbs(struct qla_qpair *qp, struct iocb_resource *iores)
390 struct qla_hw_data *ha = qp->vha->hw;
392 if (!ql2xenforce_iocb_limit) {
393 iores->res_type = RESOURCE_NONE;
397 if ((iores->iocb_cnt + qp->fwres.iocbs_used) < qp->fwres.iocbs_qp_limit) {
398 qp->fwres.iocbs_used += iores->iocb_cnt;
401 /* no need to acquire qpair lock. It's just rough calculation */
402 iocbs_used = ha->base_qpair->fwres.iocbs_used;
403 for (i = 0; i < ha->max_qpairs; i++) {
404 if (ha->queue_pair_map[i])
405 iocbs_used += ha->queue_pair_map[i]->fwres.iocbs_used;
408 if ((iores->iocb_cnt + iocbs_used) < qp->fwres.iocbs_limit) {
409 qp->fwres.iocbs_used += iores->iocb_cnt;
412 iores->res_type = RESOURCE_NONE;
419 qla_put_iocbs(struct qla_qpair *qp, struct iocb_resource *iores)
421 switch (iores->res_type) {
425 if (qp->fwres.iocbs_used >= iores->iocb_cnt) {
426 qp->fwres.iocbs_used -= iores->iocb_cnt;
429 qp->fwres.iocbs_used = 0;
433 iores->res_type = RESOURCE_NONE;