19e39c5baSBill Taylor /*
29e39c5baSBill Taylor * CDDL HEADER START
39e39c5baSBill Taylor *
49e39c5baSBill Taylor * The contents of this file are subject to the terms of the
59e39c5baSBill Taylor * Common Development and Distribution License (the "License").
69e39c5baSBill Taylor * You may not use this file except in compliance with the License.
79e39c5baSBill Taylor *
89e39c5baSBill Taylor * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
99e39c5baSBill Taylor * or http://www.opensolaris.org/os/licensing.
109e39c5baSBill Taylor * See the License for the specific language governing permissions
119e39c5baSBill Taylor * and limitations under the License.
129e39c5baSBill Taylor *
139e39c5baSBill Taylor * When distributing Covered Code, include this CDDL HEADER in each
149e39c5baSBill Taylor * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
159e39c5baSBill Taylor * If applicable, add the following below this CDDL HEADER, with the
169e39c5baSBill Taylor * fields enclosed by brackets "[]" replaced with your own identifying
179e39c5baSBill Taylor * information: Portions Copyright [yyyy] [name of copyright owner]
189e39c5baSBill Taylor *
199e39c5baSBill Taylor * CDDL HEADER END
209e39c5baSBill Taylor */
219e39c5baSBill Taylor
229e39c5baSBill Taylor /*
23*17a2b317SBill Taylor * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
249e39c5baSBill Taylor */
259e39c5baSBill Taylor
269e39c5baSBill Taylor /*
279e39c5baSBill Taylor * hermon_cq.c
289e39c5baSBill Taylor * Hermon Completion Queue Processing Routines
299e39c5baSBill Taylor *
309e39c5baSBill Taylor * Implements all the routines necessary for allocating, freeing, resizing,
319e39c5baSBill Taylor * and handling the completion type events that the Hermon hardware can
329e39c5baSBill Taylor * generate.
339e39c5baSBill Taylor */
349e39c5baSBill Taylor
359e39c5baSBill Taylor #include <sys/types.h>
369e39c5baSBill Taylor #include <sys/conf.h>
379e39c5baSBill Taylor #include <sys/ddi.h>
389e39c5baSBill Taylor #include <sys/sunddi.h>
399e39c5baSBill Taylor #include <sys/modctl.h>
409e39c5baSBill Taylor #include <sys/bitmap.h>
419e39c5baSBill Taylor #include <sys/sysmacros.h>
429e39c5baSBill Taylor
439e39c5baSBill Taylor #include <sys/ib/adapters/hermon/hermon.h>
449e39c5baSBill Taylor
459e39c5baSBill Taylor int hermon_should_panic = 0; /* debugging aid */
469e39c5baSBill Taylor
479e39c5baSBill Taylor #define hermon_cq_update_ci_doorbell(cq) \
489e39c5baSBill Taylor /* Build the doorbell record data (low 24 bits only) */ \
499e39c5baSBill Taylor HERMON_UAR_DB_RECORD_WRITE(cq->cq_arm_ci_vdbr, \
509e39c5baSBill Taylor cq->cq_consindx & 0x00FFFFFF)
519e39c5baSBill Taylor
529e39c5baSBill Taylor static int hermon_cq_arm_doorbell(hermon_state_t *state, hermon_cqhdl_t cq,
539e39c5baSBill Taylor uint_t cmd);
549e39c5baSBill Taylor #pragma inline(hermon_cq_arm_doorbell)
559e39c5baSBill Taylor static void hermon_arm_cq_dbr_init(hermon_dbr_t *cq_arm_dbr);
569e39c5baSBill Taylor #pragma inline(hermon_arm_cq_dbr_init)
579e39c5baSBill Taylor static void hermon_cq_cqe_consume(hermon_state_t *state, hermon_cqhdl_t cq,
589e39c5baSBill Taylor hermon_hw_cqe_t *cqe, ibt_wc_t *wc);
599e39c5baSBill Taylor static void hermon_cq_errcqe_consume(hermon_state_t *state, hermon_cqhdl_t cq,
609e39c5baSBill Taylor hermon_hw_cqe_t *cqe, ibt_wc_t *wc);
619e39c5baSBill Taylor
629e39c5baSBill Taylor
639e39c5baSBill Taylor /*
649e39c5baSBill Taylor * hermon_cq_alloc()
659e39c5baSBill Taylor * Context: Can be called only from user or kernel context.
669e39c5baSBill Taylor */
679e39c5baSBill Taylor int
hermon_cq_alloc(hermon_state_t * state,ibt_cq_hdl_t ibt_cqhdl,ibt_cq_attr_t * cq_attr,uint_t * actual_size,hermon_cqhdl_t * cqhdl,uint_t sleepflag)689e39c5baSBill Taylor hermon_cq_alloc(hermon_state_t *state, ibt_cq_hdl_t ibt_cqhdl,
699e39c5baSBill Taylor ibt_cq_attr_t *cq_attr, uint_t *actual_size, hermon_cqhdl_t *cqhdl,
709e39c5baSBill Taylor uint_t sleepflag)
719e39c5baSBill Taylor {
729e39c5baSBill Taylor hermon_rsrc_t *cqc, *rsrc;
739e39c5baSBill Taylor hermon_umap_db_entry_t *umapdb;
749e39c5baSBill Taylor hermon_hw_cqc_t cqc_entry;
759e39c5baSBill Taylor hermon_cqhdl_t cq;
769e39c5baSBill Taylor ibt_mr_attr_t mr_attr;
779e39c5baSBill Taylor hermon_mr_options_t op;
789e39c5baSBill Taylor hermon_pdhdl_t pd;
799e39c5baSBill Taylor hermon_mrhdl_t mr;
809e39c5baSBill Taylor hermon_hw_cqe_t *buf;
819e39c5baSBill Taylor uint64_t value;
829e39c5baSBill Taylor uint32_t log_cq_size, uarpg;
839e39c5baSBill Taylor uint_t cq_is_umap;
849e39c5baSBill Taylor uint32_t status, flag;
85*17a2b317SBill Taylor hermon_cq_sched_t *cq_schedp;
869e39c5baSBill Taylor
879e39c5baSBill Taylor _NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(*cq_attr))
889e39c5baSBill Taylor
899e39c5baSBill Taylor /*
909e39c5baSBill Taylor * Determine whether CQ is being allocated for userland access or
919e39c5baSBill Taylor * whether it is being allocated for kernel access. If the CQ is
929e39c5baSBill Taylor * being allocated for userland access, then lookup the UAR
939e39c5baSBill Taylor * page number for the current process. Note: If this is not found
949e39c5baSBill Taylor * (e.g. if the process has not previously open()'d the Hermon driver),
959e39c5baSBill Taylor * then an error is returned.
969e39c5baSBill Taylor */
979e39c5baSBill Taylor cq_is_umap = (cq_attr->cq_flags & IBT_CQ_USER_MAP) ? 1 : 0;
989e39c5baSBill Taylor if (cq_is_umap) {
999e39c5baSBill Taylor status = hermon_umap_db_find(state->hs_instance, ddi_get_pid(),
1009e39c5baSBill Taylor MLNX_UMAP_UARPG_RSRC, &value, 0, NULL);
1019e39c5baSBill Taylor if (status != DDI_SUCCESS) {
1029e39c5baSBill Taylor status = IBT_INVALID_PARAM;
1039e39c5baSBill Taylor goto cqalloc_fail;
1049e39c5baSBill Taylor }
1059e39c5baSBill Taylor uarpg = ((hermon_rsrc_t *)(uintptr_t)value)->hr_indx;
1069e39c5baSBill Taylor } else {
1079e39c5baSBill Taylor uarpg = state->hs_kernel_uar_index;
1089e39c5baSBill Taylor }
1099e39c5baSBill Taylor
1109e39c5baSBill Taylor /* Use the internal protection domain (PD) for setting up CQs */
1119e39c5baSBill Taylor pd = state->hs_pdhdl_internal;
1129e39c5baSBill Taylor
1139e39c5baSBill Taylor /* Increment the reference count on the protection domain (PD) */
1149e39c5baSBill Taylor hermon_pd_refcnt_inc(pd);
1159e39c5baSBill Taylor
1169e39c5baSBill Taylor /*
1179e39c5baSBill Taylor * Allocate an CQ context entry. This will be filled in with all
1189e39c5baSBill Taylor * the necessary parameters to define the Completion Queue. And then
1199e39c5baSBill Taylor * ownership will be passed to the hardware in the final step
1209e39c5baSBill Taylor * below. If we fail here, we must undo the protection domain
1219e39c5baSBill Taylor * reference count.
1229e39c5baSBill Taylor */
1239e39c5baSBill Taylor status = hermon_rsrc_alloc(state, HERMON_CQC, 1, sleepflag, &cqc);
1249e39c5baSBill Taylor if (status != DDI_SUCCESS) {
1259e39c5baSBill Taylor status = IBT_INSUFF_RESOURCE;
1269e39c5baSBill Taylor goto cqalloc_fail1;
1279e39c5baSBill Taylor }
1289e39c5baSBill Taylor
1299e39c5baSBill Taylor /*
1309e39c5baSBill Taylor * Allocate the software structure for tracking the completion queue
1319e39c5baSBill Taylor * (i.e. the Hermon Completion Queue handle). If we fail here, we must
1329e39c5baSBill Taylor * undo the protection domain reference count and the previous
1339e39c5baSBill Taylor * resource allocation.
1349e39c5baSBill Taylor */
1359e39c5baSBill Taylor status = hermon_rsrc_alloc(state, HERMON_CQHDL, 1, sleepflag, &rsrc);
1369e39c5baSBill Taylor if (status != DDI_SUCCESS) {
1379e39c5baSBill Taylor status = IBT_INSUFF_RESOURCE;
1389e39c5baSBill Taylor goto cqalloc_fail2;
1399e39c5baSBill Taylor }
1409e39c5baSBill Taylor cq = (hermon_cqhdl_t)rsrc->hr_addr;
1419e39c5baSBill Taylor _NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(*cq))
1429e39c5baSBill Taylor cq->cq_is_umap = cq_is_umap;
1439e39c5baSBill Taylor cq->cq_cqnum = cqc->hr_indx; /* just use index, implicit in Hermon */
144*17a2b317SBill Taylor cq->cq_intmod_count = 0;
145*17a2b317SBill Taylor cq->cq_intmod_usec = 0;
1469e39c5baSBill Taylor
1479e39c5baSBill Taylor /*
1489e39c5baSBill Taylor * If this will be a user-mappable CQ, then allocate an entry for
1499e39c5baSBill Taylor * the "userland resources database". This will later be added to
1509e39c5baSBill Taylor * the database (after all further CQ operations are successful).
1519e39c5baSBill Taylor * If we fail here, we must undo the reference counts and the
1529e39c5baSBill Taylor * previous resource allocation.
1539e39c5baSBill Taylor */
1549e39c5baSBill Taylor if (cq->cq_is_umap) {
1559e39c5baSBill Taylor umapdb = hermon_umap_db_alloc(state->hs_instance, cq->cq_cqnum,
1569e39c5baSBill Taylor MLNX_UMAP_CQMEM_RSRC, (uint64_t)(uintptr_t)rsrc);
1579e39c5baSBill Taylor if (umapdb == NULL) {
1589e39c5baSBill Taylor status = IBT_INSUFF_RESOURCE;
1599e39c5baSBill Taylor goto cqalloc_fail3;
1609e39c5baSBill Taylor }
1619e39c5baSBill Taylor }
1629e39c5baSBill Taylor
1639e39c5baSBill Taylor
1649e39c5baSBill Taylor /*
1659e39c5baSBill Taylor * Allocate the doorbell record. We'll need one for the CQ, handling
1669e39c5baSBill Taylor * both consumer index (SET CI) and the CQ state (CQ ARM).
1679e39c5baSBill Taylor */
1689e39c5baSBill Taylor
1699e39c5baSBill Taylor status = hermon_dbr_alloc(state, uarpg, &cq->cq_arm_ci_dbr_acchdl,
1709e39c5baSBill Taylor &cq->cq_arm_ci_vdbr, &cq->cq_arm_ci_pdbr, &cq->cq_dbr_mapoffset);
1719e39c5baSBill Taylor if (status != DDI_SUCCESS) {
1729e39c5baSBill Taylor status = IBT_INSUFF_RESOURCE;
1739e39c5baSBill Taylor goto cqalloc_fail4;
1749e39c5baSBill Taylor }
1759e39c5baSBill Taylor
1769e39c5baSBill Taylor /*
1779e39c5baSBill Taylor * Calculate the appropriate size for the completion queue.
1789e39c5baSBill Taylor * Note: All Hermon CQs must be a power-of-2 minus 1 in size. Also
1799e39c5baSBill Taylor * they may not be any smaller than HERMON_CQ_MIN_SIZE. This step is
1809e39c5baSBill Taylor * to round the requested size up to the next highest power-of-2
1819e39c5baSBill Taylor */
1829e39c5baSBill Taylor cq_attr->cq_size = max(cq_attr->cq_size, HERMON_CQ_MIN_SIZE);
1839e39c5baSBill Taylor log_cq_size = highbit(cq_attr->cq_size);
1849e39c5baSBill Taylor
1859e39c5baSBill Taylor /*
1869e39c5baSBill Taylor * Next we verify that the rounded-up size is valid (i.e. consistent
1879e39c5baSBill Taylor * with the device limits and/or software-configured limits)
1889e39c5baSBill Taylor */
1899e39c5baSBill Taylor if (log_cq_size > state->hs_cfg_profile->cp_log_max_cq_sz) {
1909e39c5baSBill Taylor status = IBT_HCA_CQ_EXCEEDED;
1919e39c5baSBill Taylor goto cqalloc_fail4a;
1929e39c5baSBill Taylor }
1939e39c5baSBill Taylor
1949e39c5baSBill Taylor /*
1959e39c5baSBill Taylor * Allocate the memory for Completion Queue.
1969e39c5baSBill Taylor *
1979e39c5baSBill Taylor * Note: Although we use the common queue allocation routine, we
1989e39c5baSBill Taylor * always specify HERMON_QUEUE_LOCATION_NORMAL (i.e. CQ located in
1999e39c5baSBill Taylor * kernel system memory) for kernel CQs because it would be
2009e39c5baSBill Taylor * inefficient to have CQs located in DDR memory. This is primarily
2019e39c5baSBill Taylor * because CQs are read from (by software) more than they are written
2029e39c5baSBill Taylor * to. (We always specify HERMON_QUEUE_LOCATION_USERLAND for all
2039e39c5baSBill Taylor * user-mappable CQs for a similar reason.)
2049e39c5baSBill Taylor * It is also worth noting that, unlike Hermon QP work queues,
2059e39c5baSBill Taylor * completion queues do not have the same strict alignment
2069e39c5baSBill Taylor * requirements. It is sufficient for the CQ memory to be both
2079e39c5baSBill Taylor * aligned to and bound to addresses which are a multiple of CQE size.
2089e39c5baSBill Taylor */
2099e39c5baSBill Taylor cq->cq_cqinfo.qa_size = (1 << log_cq_size) * sizeof (hermon_hw_cqe_t);
2109e39c5baSBill Taylor
2119e39c5baSBill Taylor cq->cq_cqinfo.qa_alloc_align = PAGESIZE;
2129e39c5baSBill Taylor cq->cq_cqinfo.qa_bind_align = PAGESIZE;
2139e39c5baSBill Taylor if (cq->cq_is_umap) {
2149e39c5baSBill Taylor cq->cq_cqinfo.qa_location = HERMON_QUEUE_LOCATION_USERLAND;
2159e39c5baSBill Taylor } else {
2169e39c5baSBill Taylor cq->cq_cqinfo.qa_location = HERMON_QUEUE_LOCATION_NORMAL;
2179e39c5baSBill Taylor hermon_arm_cq_dbr_init(cq->cq_arm_ci_vdbr);
2189e39c5baSBill Taylor }
2199e39c5baSBill Taylor status = hermon_queue_alloc(state, &cq->cq_cqinfo, sleepflag);
2209e39c5baSBill Taylor if (status != DDI_SUCCESS) {
2219e39c5baSBill Taylor status = IBT_INSUFF_RESOURCE;
2229e39c5baSBill Taylor goto cqalloc_fail4;
2239e39c5baSBill Taylor }
2249e39c5baSBill Taylor buf = (hermon_hw_cqe_t *)cq->cq_cqinfo.qa_buf_aligned;
2259e39c5baSBill Taylor _NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(*buf))
2269e39c5baSBill Taylor
2279e39c5baSBill Taylor /*
2289e39c5baSBill Taylor * The ownership bit of the CQE's is set by the HW during the process
2299e39c5baSBill Taylor * of transferrring ownership of the CQ (PRM 09.35c, 14.2.1, note D1
2309e39c5baSBill Taylor *
2319e39c5baSBill Taylor */
2329e39c5baSBill Taylor
2339e39c5baSBill Taylor /*
2349e39c5baSBill Taylor * Register the memory for the CQ. The memory for the CQ must
2359e39c5baSBill Taylor * be registered in the Hermon TPT tables. This gives us the LKey
2369e39c5baSBill Taylor * to specify in the CQ context below. Note: If this is a user-
2379e39c5baSBill Taylor * mappable CQ, then we will force DDI_DMA_CONSISTENT mapping.
2389e39c5baSBill Taylor */
2399e39c5baSBill Taylor flag = (sleepflag == HERMON_SLEEP) ? IBT_MR_SLEEP : IBT_MR_NOSLEEP;
2409e39c5baSBill Taylor mr_attr.mr_vaddr = (uint64_t)(uintptr_t)buf;
2419e39c5baSBill Taylor mr_attr.mr_len = cq->cq_cqinfo.qa_size;
2429e39c5baSBill Taylor mr_attr.mr_as = NULL;
2439e39c5baSBill Taylor mr_attr.mr_flags = flag | IBT_MR_ENABLE_LOCAL_WRITE;
2449e39c5baSBill Taylor op.mro_bind_type = state->hs_cfg_profile->cp_iommu_bypass;
2459e39c5baSBill Taylor op.mro_bind_dmahdl = cq->cq_cqinfo.qa_dmahdl;
2469e39c5baSBill Taylor op.mro_bind_override_addr = 0;
2479e39c5baSBill Taylor status = hermon_mr_register(state, pd, &mr_attr, &mr, &op,
2489e39c5baSBill Taylor HERMON_CQ_CMPT);
2499e39c5baSBill Taylor if (status != DDI_SUCCESS) {
2509e39c5baSBill Taylor status = IBT_INSUFF_RESOURCE;
2519e39c5baSBill Taylor goto cqalloc_fail5;
2529e39c5baSBill Taylor }
2539e39c5baSBill Taylor _NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(*mr))
2549e39c5baSBill Taylor
255*17a2b317SBill Taylor cq->cq_erreqnum = HERMON_CQ_ERREQNUM_GET(state);
256*17a2b317SBill Taylor if (cq_attr->cq_flags & IBT_CQ_HID) {
257*17a2b317SBill Taylor if (!HERMON_HID_VALID(state, cq_attr->cq_hid)) {
258*17a2b317SBill Taylor IBTF_DPRINTF_L2("CQalloc", "bad handler id 0x%x",
259*17a2b317SBill Taylor cq_attr->cq_hid);
260*17a2b317SBill Taylor status = IBT_INVALID_PARAM;
261*17a2b317SBill Taylor goto cqalloc_fail5;
262*17a2b317SBill Taylor }
263*17a2b317SBill Taylor cq->cq_eqnum = HERMON_HID_TO_EQNUM(state, cq_attr->cq_hid);
264*17a2b317SBill Taylor IBTF_DPRINTF_L2("cqalloc", "hid: eqn %d", cq->cq_eqnum);
265*17a2b317SBill Taylor } else {
266*17a2b317SBill Taylor cq_schedp = (hermon_cq_sched_t *)cq_attr->cq_sched;
267*17a2b317SBill Taylor if (cq_schedp == NULL) {
268*17a2b317SBill Taylor cq_schedp = &state->hs_cq_sched_default;
269*17a2b317SBill Taylor } else if (cq_schedp != &state->hs_cq_sched_default) {
270*17a2b317SBill Taylor int i;
271*17a2b317SBill Taylor hermon_cq_sched_t *tmp;
272*17a2b317SBill Taylor
273*17a2b317SBill Taylor tmp = state->hs_cq_sched_array;
274*17a2b317SBill Taylor for (i = 0; i < state->hs_cq_sched_array_size; i++)
275*17a2b317SBill Taylor if (cq_schedp == &tmp[i])
276*17a2b317SBill Taylor break; /* found it */
277*17a2b317SBill Taylor if (i >= state->hs_cq_sched_array_size) {
278*17a2b317SBill Taylor cmn_err(CE_CONT, "!Invalid cq_sched argument: "
279*17a2b317SBill Taylor "ignored\n");
280*17a2b317SBill Taylor cq_schedp = &state->hs_cq_sched_default;
281*17a2b317SBill Taylor }
282*17a2b317SBill Taylor }
283*17a2b317SBill Taylor cq->cq_eqnum = HERMON_HID_TO_EQNUM(state,
284*17a2b317SBill Taylor HERMON_CQSCHED_NEXT_HID(cq_schedp));
285*17a2b317SBill Taylor IBTF_DPRINTF_L2("cqalloc", "sched: first-1 %d, len %d, "
286*17a2b317SBill Taylor "eqn %d", cq_schedp->cqs_start_hid - 1,
287*17a2b317SBill Taylor cq_schedp->cqs_len, cq->cq_eqnum);
288*17a2b317SBill Taylor }
2899e39c5baSBill Taylor
2909e39c5baSBill Taylor /*
2919e39c5baSBill Taylor * Fill in the CQC entry. This is the final step before passing
2929e39c5baSBill Taylor * ownership of the CQC entry to the Hermon hardware. We use all of
2939e39c5baSBill Taylor * the information collected/calculated above to fill in the
2949e39c5baSBill Taylor * requisite portions of the CQC. Note: If this CQ is going to be
2959e39c5baSBill Taylor * used for userland access, then we need to set the UAR page number
2969e39c5baSBill Taylor * appropriately (otherwise it's a "don't care")
2979e39c5baSBill Taylor */
2989e39c5baSBill Taylor bzero(&cqc_entry, sizeof (hermon_hw_cqc_t));
2999e39c5baSBill Taylor
3009e39c5baSBill Taylor cqc_entry.state = HERMON_CQ_DISARMED;
3019e39c5baSBill Taylor cqc_entry.pg_offs = cq->cq_cqinfo.qa_pgoffs >> 5;
3029e39c5baSBill Taylor cqc_entry.log_cq_sz = log_cq_size;
3039e39c5baSBill Taylor cqc_entry.usr_page = uarpg;
3049e39c5baSBill Taylor cqc_entry.c_eqn = cq->cq_eqnum;
3059e39c5baSBill Taylor cqc_entry.log2_pgsz = mr->mr_log2_pgsz;
3069e39c5baSBill Taylor cqc_entry.mtt_base_addh = (uint32_t)((mr->mr_mttaddr >> 32) & 0xFF);
3079e39c5baSBill Taylor cqc_entry.mtt_base_addl = mr->mr_mttaddr >> 3;
3089e39c5baSBill Taylor cqc_entry.dbr_addrh = (uint32_t)((uint64_t)cq->cq_arm_ci_pdbr >> 32);
3099e39c5baSBill Taylor cqc_entry.dbr_addrl = (uint32_t)((uint64_t)cq->cq_arm_ci_pdbr >> 3);
3109e39c5baSBill Taylor
3119e39c5baSBill Taylor /*
3129e39c5baSBill Taylor * Write the CQC entry to hardware - we pass ownership of
3139e39c5baSBill Taylor * the entry to the hardware (using the Hermon SW2HW_CQ firmware
3149e39c5baSBill Taylor * command). Note: In general, this operation shouldn't fail. But
3159e39c5baSBill Taylor * if it does, we have to undo everything we've done above before
3169e39c5baSBill Taylor * returning error.
3179e39c5baSBill Taylor */
3189e39c5baSBill Taylor status = hermon_cmn_ownership_cmd_post(state, SW2HW_CQ, &cqc_entry,
3199e39c5baSBill Taylor sizeof (hermon_hw_cqc_t), cq->cq_cqnum, sleepflag);
3209e39c5baSBill Taylor if (status != HERMON_CMD_SUCCESS) {
3219e39c5baSBill Taylor cmn_err(CE_CONT, "Hermon: SW2HW_CQ command failed: %08x\n",
3229e39c5baSBill Taylor status);
3239e39c5baSBill Taylor if (status == HERMON_CMD_INVALID_STATUS) {
3249e39c5baSBill Taylor hermon_fm_ereport(state, HCA_SYS_ERR, HCA_ERR_SRV_LOST);
3259e39c5baSBill Taylor }
3269e39c5baSBill Taylor status = ibc_get_ci_failure(0);
3279e39c5baSBill Taylor goto cqalloc_fail6;
3289e39c5baSBill Taylor }
3299e39c5baSBill Taylor
3309e39c5baSBill Taylor /*
3319e39c5baSBill Taylor * Fill in the rest of the Hermon Completion Queue handle. Having
3329e39c5baSBill Taylor * successfully transferred ownership of the CQC, we can update the
3339e39c5baSBill Taylor * following fields for use in further operations on the CQ.
3349e39c5baSBill Taylor */
3359e39c5baSBill Taylor cq->cq_resize_hdl = 0;
3369e39c5baSBill Taylor cq->cq_cqcrsrcp = cqc;
3379e39c5baSBill Taylor cq->cq_rsrcp = rsrc;
3389e39c5baSBill Taylor cq->cq_consindx = 0;
3399e39c5baSBill Taylor /* least restrictive */
3409e39c5baSBill Taylor cq->cq_buf = buf;
3419e39c5baSBill Taylor cq->cq_bufsz = (1 << log_cq_size);
3429e39c5baSBill Taylor cq->cq_log_cqsz = log_cq_size;
3439e39c5baSBill Taylor cq->cq_mrhdl = mr;
3449e39c5baSBill Taylor cq->cq_refcnt = 0;
3459e39c5baSBill Taylor cq->cq_is_special = 0;
3469e39c5baSBill Taylor cq->cq_uarpg = uarpg;
3479e39c5baSBill Taylor cq->cq_umap_dhp = (devmap_cookie_t)NULL;
3489e39c5baSBill Taylor avl_create(&cq->cq_wrid_wqhdr_avl_tree, hermon_wrid_workq_compare,
3499e39c5baSBill Taylor sizeof (struct hermon_workq_avl_s),
3509e39c5baSBill Taylor offsetof(struct hermon_workq_avl_s, wqa_link));
3519e39c5baSBill Taylor
3529e39c5baSBill Taylor cq->cq_hdlrarg = (void *)ibt_cqhdl;
3539e39c5baSBill Taylor
3549e39c5baSBill Taylor /*
3559e39c5baSBill Taylor * Put CQ handle in Hermon CQNum-to-CQHdl list. Then fill in the
3569e39c5baSBill Taylor * "actual_size" and "cqhdl" and return success
3579e39c5baSBill Taylor */
358*17a2b317SBill Taylor hermon_icm_set_num_to_hdl(state, HERMON_CQC, cqc->hr_indx, cq);
3599e39c5baSBill Taylor
3609e39c5baSBill Taylor /*
3619e39c5baSBill Taylor * If this is a user-mappable CQ, then we need to insert the previously
3629e39c5baSBill Taylor * allocated entry into the "userland resources database". This will
3639e39c5baSBill Taylor * allow for later lookup during devmap() (i.e. mmap()) calls.
3649e39c5baSBill Taylor */
3659e39c5baSBill Taylor if (cq->cq_is_umap) {
3669e39c5baSBill Taylor hermon_umap_db_add(umapdb);
3679e39c5baSBill Taylor }
3689e39c5baSBill Taylor
3699e39c5baSBill Taylor /*
3709e39c5baSBill Taylor * Fill in the return arguments (if necessary). This includes the
3719e39c5baSBill Taylor * real completion queue size.
3729e39c5baSBill Taylor */
3739e39c5baSBill Taylor if (actual_size != NULL) {
3749e39c5baSBill Taylor *actual_size = (1 << log_cq_size) - 1;
3759e39c5baSBill Taylor }
3769e39c5baSBill Taylor *cqhdl = cq;
3779e39c5baSBill Taylor
3789e39c5baSBill Taylor return (DDI_SUCCESS);
3799e39c5baSBill Taylor
3809e39c5baSBill Taylor /*
3819e39c5baSBill Taylor * The following is cleanup for all possible failure cases in this routine
3829e39c5baSBill Taylor */
3839e39c5baSBill Taylor cqalloc_fail6:
3849e39c5baSBill Taylor if (hermon_mr_deregister(state, &mr, HERMON_MR_DEREG_ALL,
3859e39c5baSBill Taylor sleepflag) != DDI_SUCCESS) {
3869e39c5baSBill Taylor HERMON_WARNING(state, "failed to deregister CQ memory");
3879e39c5baSBill Taylor }
3889e39c5baSBill Taylor cqalloc_fail5:
3899e39c5baSBill Taylor hermon_queue_free(&cq->cq_cqinfo);
3909e39c5baSBill Taylor cqalloc_fail4a:
3919e39c5baSBill Taylor hermon_dbr_free(state, uarpg, cq->cq_arm_ci_vdbr);
3929e39c5baSBill Taylor cqalloc_fail4:
3939e39c5baSBill Taylor if (cq_is_umap) {
3949e39c5baSBill Taylor hermon_umap_db_free(umapdb);
3959e39c5baSBill Taylor }
3969e39c5baSBill Taylor cqalloc_fail3:
3979e39c5baSBill Taylor hermon_rsrc_free(state, &rsrc);
3989e39c5baSBill Taylor cqalloc_fail2:
3999e39c5baSBill Taylor hermon_rsrc_free(state, &cqc);
4009e39c5baSBill Taylor cqalloc_fail1:
4019e39c5baSBill Taylor hermon_pd_refcnt_dec(pd);
4029e39c5baSBill Taylor cqalloc_fail:
4039e39c5baSBill Taylor return (status);
4049e39c5baSBill Taylor }
4059e39c5baSBill Taylor
4069e39c5baSBill Taylor
4079e39c5baSBill Taylor /*
4089e39c5baSBill Taylor * hermon_cq_free()
4099e39c5baSBill Taylor * Context: Can be called only from user or kernel context.
4109e39c5baSBill Taylor */
4119e39c5baSBill Taylor /* ARGSUSED */
4129e39c5baSBill Taylor int
hermon_cq_free(hermon_state_t * state,hermon_cqhdl_t * cqhdl,uint_t sleepflag)4139e39c5baSBill Taylor hermon_cq_free(hermon_state_t *state, hermon_cqhdl_t *cqhdl, uint_t sleepflag)
4149e39c5baSBill Taylor {
4159e39c5baSBill Taylor hermon_rsrc_t *cqc, *rsrc;
4169e39c5baSBill Taylor hermon_umap_db_entry_t *umapdb;
4179e39c5baSBill Taylor hermon_hw_cqc_t cqc_entry;
4189e39c5baSBill Taylor hermon_pdhdl_t pd;
4199e39c5baSBill Taylor hermon_mrhdl_t mr;
4209e39c5baSBill Taylor hermon_cqhdl_t cq, resize;
4219e39c5baSBill Taylor uint32_t cqnum;
4229e39c5baSBill Taylor uint64_t value;
4239e39c5baSBill Taylor uint_t maxprot;
4249e39c5baSBill Taylor int status;
4259e39c5baSBill Taylor
4269e39c5baSBill Taylor /*
4279e39c5baSBill Taylor * Pull all the necessary information from the Hermon Completion Queue
4289e39c5baSBill Taylor * handle. This is necessary here because the resource for the
4299e39c5baSBill Taylor * CQ handle is going to be freed up as part of this operation.
4309e39c5baSBill Taylor */
4319e39c5baSBill Taylor cq = *cqhdl;
4329e39c5baSBill Taylor mutex_enter(&cq->cq_lock);
4339e39c5baSBill Taylor cqc = cq->cq_cqcrsrcp;
4349e39c5baSBill Taylor rsrc = cq->cq_rsrcp;
4359e39c5baSBill Taylor pd = state->hs_pdhdl_internal;
4369e39c5baSBill Taylor mr = cq->cq_mrhdl;
4379e39c5baSBill Taylor cqnum = cq->cq_cqnum;
4389e39c5baSBill Taylor
4399e39c5baSBill Taylor resize = cq->cq_resize_hdl; /* save the handle for later */
4409e39c5baSBill Taylor
4419e39c5baSBill Taylor /*
4429e39c5baSBill Taylor * If there are work queues still associated with the CQ, then return
4439e39c5baSBill Taylor * an error. Otherwise, we will be holding the CQ lock.
4449e39c5baSBill Taylor */
4459e39c5baSBill Taylor if (cq->cq_refcnt != 0) {
4469e39c5baSBill Taylor mutex_exit(&cq->cq_lock);
4479e39c5baSBill Taylor return (IBT_CQ_BUSY);
4489e39c5baSBill Taylor }
4499e39c5baSBill Taylor
4509e39c5baSBill Taylor /*
4519e39c5baSBill Taylor * If this was a user-mappable CQ, then we need to remove its entry
4529e39c5baSBill Taylor * from the "userland resources database". If it is also currently
4539e39c5baSBill Taylor * mmap()'d out to a user process, then we need to call
4549e39c5baSBill Taylor * devmap_devmem_remap() to remap the CQ memory to an invalid mapping.
4559e39c5baSBill Taylor * We also need to invalidate the CQ tracking information for the
4569e39c5baSBill Taylor * user mapping.
4579e39c5baSBill Taylor */
4589e39c5baSBill Taylor if (cq->cq_is_umap) {
4599e39c5baSBill Taylor status = hermon_umap_db_find(state->hs_instance, cqnum,
4609e39c5baSBill Taylor MLNX_UMAP_CQMEM_RSRC, &value, HERMON_UMAP_DB_REMOVE,
4619e39c5baSBill Taylor &umapdb);
4629e39c5baSBill Taylor if (status != DDI_SUCCESS) {
4639e39c5baSBill Taylor mutex_exit(&cq->cq_lock);
4649e39c5baSBill Taylor HERMON_WARNING(state, "failed to find in database");
4659e39c5baSBill Taylor return (ibc_get_ci_failure(0));
4669e39c5baSBill Taylor }
4679e39c5baSBill Taylor hermon_umap_db_free(umapdb);
4689e39c5baSBill Taylor if (cq->cq_umap_dhp != NULL) {
4699e39c5baSBill Taylor maxprot = (PROT_READ | PROT_WRITE | PROT_USER);
4709e39c5baSBill Taylor status = devmap_devmem_remap(cq->cq_umap_dhp,
4719e39c5baSBill Taylor state->hs_dip, 0, 0, cq->cq_cqinfo.qa_size,
4729e39c5baSBill Taylor maxprot, DEVMAP_MAPPING_INVALID, NULL);
4739e39c5baSBill Taylor if (status != DDI_SUCCESS) {
4749e39c5baSBill Taylor mutex_exit(&cq->cq_lock);
4759e39c5baSBill Taylor HERMON_WARNING(state, "failed in CQ memory "
4769e39c5baSBill Taylor "devmap_devmem_remap()");
4779e39c5baSBill Taylor return (ibc_get_ci_failure(0));
4789e39c5baSBill Taylor }
4799e39c5baSBill Taylor cq->cq_umap_dhp = (devmap_cookie_t)NULL;
4809e39c5baSBill Taylor }
4819e39c5baSBill Taylor }
4829e39c5baSBill Taylor
4839e39c5baSBill Taylor /*
4849e39c5baSBill Taylor * Put NULL into the Arbel CQNum-to-CQHdl list. This will allow any
4859e39c5baSBill Taylor * in-progress events to detect that the CQ corresponding to this
4869e39c5baSBill Taylor * number has been freed.
4879e39c5baSBill Taylor */
488*17a2b317SBill Taylor hermon_icm_set_num_to_hdl(state, HERMON_CQC, cqc->hr_indx, NULL);
4899e39c5baSBill Taylor
4909e39c5baSBill Taylor mutex_exit(&cq->cq_lock);
4919e39c5baSBill Taylor _NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(*cq))
4929e39c5baSBill Taylor
4939e39c5baSBill Taylor /*
4949e39c5baSBill Taylor * Reclaim CQC entry from hardware (using the Hermon HW2SW_CQ
4959e39c5baSBill Taylor * firmware command). If the ownership transfer fails for any reason,
4969e39c5baSBill Taylor * then it is an indication that something (either in HW or SW) has
4979e39c5baSBill Taylor * gone seriously wrong.
4989e39c5baSBill Taylor */
4999e39c5baSBill Taylor status = hermon_cmn_ownership_cmd_post(state, HW2SW_CQ, &cqc_entry,
5009e39c5baSBill Taylor sizeof (hermon_hw_cqc_t), cqnum, sleepflag);
5019e39c5baSBill Taylor if (status != HERMON_CMD_SUCCESS) {
5029e39c5baSBill Taylor HERMON_WARNING(state, "failed to reclaim CQC ownership");
5039e39c5baSBill Taylor cmn_err(CE_CONT, "Hermon: HW2SW_CQ command failed: %08x\n",
5049e39c5baSBill Taylor status);
5059e39c5baSBill Taylor if (status == HERMON_CMD_INVALID_STATUS) {
5069e39c5baSBill Taylor hermon_fm_ereport(state, HCA_SYS_ERR, HCA_ERR_SRV_LOST);
5079e39c5baSBill Taylor }
5089e39c5baSBill Taylor return (ibc_get_ci_failure(0));
5099e39c5baSBill Taylor }
5109e39c5baSBill Taylor
5119e39c5baSBill Taylor /*
5129e39c5baSBill Taylor * From here on, we start reliquishing resources - but check to see
5139e39c5baSBill Taylor * if a resize was in progress - if so, we need to relinquish those
5149e39c5baSBill Taylor * resources as well
5159e39c5baSBill Taylor */
5169e39c5baSBill Taylor
5179e39c5baSBill Taylor
5189e39c5baSBill Taylor /*
5199e39c5baSBill Taylor * Deregister the memory for the Completion Queue. If this fails
5209e39c5baSBill Taylor * for any reason, then it is an indication that something (either
5219e39c5baSBill Taylor * in HW or SW) has gone seriously wrong. So we print a warning
5229e39c5baSBill Taylor * message and return.
5239e39c5baSBill Taylor */
5249e39c5baSBill Taylor status = hermon_mr_deregister(state, &mr, HERMON_MR_DEREG_ALL,
5259e39c5baSBill Taylor sleepflag);
5269e39c5baSBill Taylor if (status != DDI_SUCCESS) {
5279e39c5baSBill Taylor HERMON_WARNING(state, "failed to deregister CQ memory");
5289e39c5baSBill Taylor return (ibc_get_ci_failure(0));
5299e39c5baSBill Taylor }
5309e39c5baSBill Taylor
5319e39c5baSBill Taylor if (resize) { /* there was a pointer to a handle */
5329e39c5baSBill Taylor mr = resize->cq_mrhdl; /* reuse the pointer to the region */
5339e39c5baSBill Taylor status = hermon_mr_deregister(state, &mr, HERMON_MR_DEREG_ALL,
5349e39c5baSBill Taylor sleepflag);
5359e39c5baSBill Taylor if (status != DDI_SUCCESS) {
5369e39c5baSBill Taylor HERMON_WARNING(state, "failed to deregister resize CQ "
5379e39c5baSBill Taylor "memory");
5389e39c5baSBill Taylor return (ibc_get_ci_failure(0));
5399e39c5baSBill Taylor }
5409e39c5baSBill Taylor }
5419e39c5baSBill Taylor
5429e39c5baSBill Taylor /* Free the memory for the CQ */
5439e39c5baSBill Taylor hermon_queue_free(&cq->cq_cqinfo);
5449e39c5baSBill Taylor if (resize) {
5459e39c5baSBill Taylor hermon_queue_free(&resize->cq_cqinfo);
5469e39c5baSBill Taylor /* and the temporary handle */
5479e39c5baSBill Taylor kmem_free(resize, sizeof (struct hermon_sw_cq_s));
5489e39c5baSBill Taylor }
5499e39c5baSBill Taylor
5509e39c5baSBill Taylor /* everything else does not matter for the resize in progress */
5519e39c5baSBill Taylor
5529e39c5baSBill Taylor /* Free the dbr */
5539e39c5baSBill Taylor hermon_dbr_free(state, cq->cq_uarpg, cq->cq_arm_ci_vdbr);
5549e39c5baSBill Taylor
5559e39c5baSBill Taylor /* Free the Hermon Completion Queue handle */
5569e39c5baSBill Taylor hermon_rsrc_free(state, &rsrc);
5579e39c5baSBill Taylor
5589e39c5baSBill Taylor /* Free up the CQC entry resource */
5599e39c5baSBill Taylor hermon_rsrc_free(state, &cqc);
5609e39c5baSBill Taylor
5619e39c5baSBill Taylor /* Decrement the reference count on the protection domain (PD) */
5629e39c5baSBill Taylor hermon_pd_refcnt_dec(pd);
5639e39c5baSBill Taylor
5649e39c5baSBill Taylor /* Set the cqhdl pointer to NULL and return success */
5659e39c5baSBill Taylor *cqhdl = NULL;
5669e39c5baSBill Taylor
5679e39c5baSBill Taylor return (DDI_SUCCESS);
5689e39c5baSBill Taylor }
5699e39c5baSBill Taylor
5709e39c5baSBill Taylor
5719e39c5baSBill Taylor /*
5729e39c5baSBill Taylor * hermon_cq_resize()
5739e39c5baSBill Taylor * Context: Can be called only from user or kernel context.
5749e39c5baSBill Taylor */
5759e39c5baSBill Taylor int
hermon_cq_resize(hermon_state_t * state,hermon_cqhdl_t cq,uint_t req_size,uint_t * actual_size,uint_t sleepflag)5769e39c5baSBill Taylor hermon_cq_resize(hermon_state_t *state, hermon_cqhdl_t cq, uint_t req_size,
5779e39c5baSBill Taylor uint_t *actual_size, uint_t sleepflag)
5789e39c5baSBill Taylor {
5799e39c5baSBill Taylor hermon_hw_cqc_t cqc_entry;
5809e39c5baSBill Taylor hermon_cqhdl_t resize_hdl;
5819e39c5baSBill Taylor hermon_qalloc_info_t new_cqinfo;
5829e39c5baSBill Taylor ibt_mr_attr_t mr_attr;
5839e39c5baSBill Taylor hermon_mr_options_t op;
5849e39c5baSBill Taylor hermon_pdhdl_t pd;
5859e39c5baSBill Taylor hermon_mrhdl_t mr;
5869e39c5baSBill Taylor hermon_hw_cqe_t *buf;
5879e39c5baSBill Taylor uint32_t new_prod_indx;
5889e39c5baSBill Taylor uint_t log_cq_size;
5899e39c5baSBill Taylor int status, flag;
5909e39c5baSBill Taylor
5919e39c5baSBill Taylor if (cq->cq_resize_hdl != 0) { /* already in process */
5929e39c5baSBill Taylor status = IBT_CQ_BUSY;
5939e39c5baSBill Taylor goto cqresize_fail;
5949e39c5baSBill Taylor }
5959e39c5baSBill Taylor
5969e39c5baSBill Taylor
5979e39c5baSBill Taylor /* Use the internal protection domain (PD) for CQs */
5989e39c5baSBill Taylor pd = state->hs_pdhdl_internal;
5999e39c5baSBill Taylor
6009e39c5baSBill Taylor /*
6019e39c5baSBill Taylor * Calculate the appropriate size for the new resized completion queue.
6029e39c5baSBill Taylor * Note: All Hermon CQs must be a power-of-2 minus 1 in size. Also
6039e39c5baSBill Taylor * they may not be any smaller than HERMON_CQ_MIN_SIZE. This step is
6049e39c5baSBill Taylor * to round the requested size up to the next highest power-of-2
6059e39c5baSBill Taylor */
6069e39c5baSBill Taylor req_size = max(req_size, HERMON_CQ_MIN_SIZE);
6079e39c5baSBill Taylor log_cq_size = highbit(req_size);
6089e39c5baSBill Taylor
6099e39c5baSBill Taylor /*
6109e39c5baSBill Taylor * Next we verify that the rounded-up size is valid (i.e. consistent
6119e39c5baSBill Taylor * with the device limits and/or software-configured limits)
6129e39c5baSBill Taylor */
6139e39c5baSBill Taylor if (log_cq_size > state->hs_cfg_profile->cp_log_max_cq_sz) {
6149e39c5baSBill Taylor status = IBT_HCA_CQ_EXCEEDED;
6159e39c5baSBill Taylor goto cqresize_fail;
6169e39c5baSBill Taylor }
6179e39c5baSBill Taylor
6189e39c5baSBill Taylor /*
6199e39c5baSBill Taylor * Allocate the memory for newly resized Completion Queue.
6209e39c5baSBill Taylor *
6219e39c5baSBill Taylor * Note: Although we use the common queue allocation routine, we
6229e39c5baSBill Taylor * always specify HERMON_QUEUE_LOCATION_NORMAL (i.e. CQ located in
6239e39c5baSBill Taylor * kernel system memory) for kernel CQs because it would be
6249e39c5baSBill Taylor * inefficient to have CQs located in DDR memory. This is the same
6259e39c5baSBill Taylor * as we do when we first allocate completion queues primarily
6269e39c5baSBill Taylor * because CQs are read from (by software) more than they are written
6279e39c5baSBill Taylor * to. (We always specify HERMON_QUEUE_LOCATION_USERLAND for all
6289e39c5baSBill Taylor * user-mappable CQs for a similar reason.)
6299e39c5baSBill Taylor * It is also worth noting that, unlike Hermon QP work queues,
6309e39c5baSBill Taylor * completion queues do not have the same strict alignment
6319e39c5baSBill Taylor * requirements. It is sufficient for the CQ memory to be both
6329e39c5baSBill Taylor * aligned to and bound to addresses which are a multiple of CQE size.
6339e39c5baSBill Taylor */
6349e39c5baSBill Taylor
6359e39c5baSBill Taylor /* first, alloc the resize_handle */
6369e39c5baSBill Taylor resize_hdl = kmem_zalloc(sizeof (struct hermon_sw_cq_s), KM_SLEEP);
6379e39c5baSBill Taylor
6389e39c5baSBill Taylor new_cqinfo.qa_size = (1 << log_cq_size) * sizeof (hermon_hw_cqe_t);
6399e39c5baSBill Taylor new_cqinfo.qa_alloc_align = PAGESIZE;
6409e39c5baSBill Taylor new_cqinfo.qa_bind_align = PAGESIZE;
6419e39c5baSBill Taylor if (cq->cq_is_umap) {
6429e39c5baSBill Taylor new_cqinfo.qa_location = HERMON_QUEUE_LOCATION_USERLAND;
6439e39c5baSBill Taylor } else {
6449e39c5baSBill Taylor new_cqinfo.qa_location = HERMON_QUEUE_LOCATION_NORMAL;
6459e39c5baSBill Taylor }
6469e39c5baSBill Taylor status = hermon_queue_alloc(state, &new_cqinfo, sleepflag);
6479e39c5baSBill Taylor if (status != DDI_SUCCESS) {
6489e39c5baSBill Taylor /* free the resize handle */
6499e39c5baSBill Taylor kmem_free(resize_hdl, sizeof (struct hermon_sw_cq_s));
6509e39c5baSBill Taylor status = IBT_INSUFF_RESOURCE;
6519e39c5baSBill Taylor goto cqresize_fail;
6529e39c5baSBill Taylor }
6539e39c5baSBill Taylor buf = (hermon_hw_cqe_t *)new_cqinfo.qa_buf_aligned;
6549e39c5baSBill Taylor _NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(*buf))
6559e39c5baSBill Taylor
6569e39c5baSBill Taylor /*
6579e39c5baSBill Taylor * No initialization of the cq is needed - the command will do it
6589e39c5baSBill Taylor */
6599e39c5baSBill Taylor
6609e39c5baSBill Taylor /*
6619e39c5baSBill Taylor * Register the memory for the CQ. The memory for the CQ must
6629e39c5baSBill Taylor * be registered in the Hermon TPT tables. This gives us the LKey
6639e39c5baSBill Taylor * to specify in the CQ context below.
6649e39c5baSBill Taylor */
6659e39c5baSBill Taylor flag = (sleepflag == HERMON_SLEEP) ? IBT_MR_SLEEP : IBT_MR_NOSLEEP;
6669e39c5baSBill Taylor mr_attr.mr_vaddr = (uint64_t)(uintptr_t)buf;
6679e39c5baSBill Taylor mr_attr.mr_len = new_cqinfo.qa_size;
6689e39c5baSBill Taylor mr_attr.mr_as = NULL;
6699e39c5baSBill Taylor mr_attr.mr_flags = flag | IBT_MR_ENABLE_LOCAL_WRITE;
6709e39c5baSBill Taylor op.mro_bind_type = state->hs_cfg_profile->cp_iommu_bypass;
6719e39c5baSBill Taylor op.mro_bind_dmahdl = new_cqinfo.qa_dmahdl;
6729e39c5baSBill Taylor op.mro_bind_override_addr = 0;
6739e39c5baSBill Taylor status = hermon_mr_register(state, pd, &mr_attr, &mr, &op,
6749e39c5baSBill Taylor HERMON_CQ_CMPT);
6759e39c5baSBill Taylor if (status != DDI_SUCCESS) {
6769e39c5baSBill Taylor hermon_queue_free(&new_cqinfo);
6779e39c5baSBill Taylor /* free the resize handle */
6789e39c5baSBill Taylor kmem_free(resize_hdl, sizeof (struct hermon_sw_cq_s));
6799e39c5baSBill Taylor status = IBT_INSUFF_RESOURCE;
6809e39c5baSBill Taylor goto cqresize_fail;
6819e39c5baSBill Taylor }
6829e39c5baSBill Taylor _NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(*mr))
6839e39c5baSBill Taylor
6849e39c5baSBill Taylor /*
6859e39c5baSBill Taylor * Now we grab the CQ lock. Since we will be updating the actual
6869e39c5baSBill Taylor * CQ location and the producer/consumer indexes, we should hold
6879e39c5baSBill Taylor * the lock.
6889e39c5baSBill Taylor *
6899e39c5baSBill Taylor * We do a ARBEL_NOSLEEP here (and below), though, because we are
6909e39c5baSBill Taylor * holding the "cq_lock" and if we got raised to interrupt level
6919e39c5baSBill Taylor * by priority inversion, we would not want to block in this routine
6929e39c5baSBill Taylor * waiting for success.
6939e39c5baSBill Taylor */
6949e39c5baSBill Taylor mutex_enter(&cq->cq_lock);
6959e39c5baSBill Taylor
6969e39c5baSBill Taylor /*
6979e39c5baSBill Taylor * Fill in the CQC entry. For the resize operation this is the
6989e39c5baSBill Taylor * final step before attempting the resize operation on the CQC entry.
6999e39c5baSBill Taylor * We use all of the information collected/calculated above to fill
7009e39c5baSBill Taylor * in the requisite portions of the CQC.
7019e39c5baSBill Taylor */
7029e39c5baSBill Taylor bzero(&cqc_entry, sizeof (hermon_hw_cqc_t));
7039e39c5baSBill Taylor cqc_entry.log_cq_sz = log_cq_size;
7049e39c5baSBill Taylor cqc_entry.pg_offs = new_cqinfo.qa_pgoffs >> 5;
7059e39c5baSBill Taylor cqc_entry.log2_pgsz = mr->mr_log2_pgsz;
7069e39c5baSBill Taylor cqc_entry.mtt_base_addh = (uint32_t)((mr->mr_mttaddr >> 32) & 0xFF);
7079e39c5baSBill Taylor cqc_entry.mtt_base_addl = mr->mr_mttaddr >> 3;
7089e39c5baSBill Taylor
7099e39c5baSBill Taylor /*
7109e39c5baSBill Taylor * Write the CQC entry to hardware. Lastly, we pass ownership of
7119e39c5baSBill Taylor * the entry to the hardware (using the Hermon RESIZE_CQ firmware
7129e39c5baSBill Taylor * command). Note: In general, this operation shouldn't fail. But
7139e39c5baSBill Taylor * if it does, we have to undo everything we've done above before
7149e39c5baSBill Taylor * returning error. Also note that the status returned may indicate
7159e39c5baSBill Taylor * the code to return to the IBTF.
7169e39c5baSBill Taylor */
7179e39c5baSBill Taylor status = hermon_resize_cq_cmd_post(state, &cqc_entry, cq->cq_cqnum,
7189e39c5baSBill Taylor &new_prod_indx, HERMON_CMD_NOSLEEP_SPIN);
7199e39c5baSBill Taylor if (status != HERMON_CMD_SUCCESS) {
7209e39c5baSBill Taylor /* Resize attempt has failed, drop CQ lock and cleanup */
7219e39c5baSBill Taylor mutex_exit(&cq->cq_lock);
7229e39c5baSBill Taylor if (hermon_mr_deregister(state, &mr, HERMON_MR_DEREG_ALL,
7239e39c5baSBill Taylor sleepflag) != DDI_SUCCESS) {
7249e39c5baSBill Taylor HERMON_WARNING(state, "failed to deregister CQ memory");
7259e39c5baSBill Taylor }
7269e39c5baSBill Taylor kmem_free(resize_hdl, sizeof (struct hermon_sw_cq_s));
7279e39c5baSBill Taylor hermon_queue_free(&new_cqinfo);
7289e39c5baSBill Taylor if (status == HERMON_CMD_BAD_SIZE) {
7299e39c5baSBill Taylor return (IBT_CQ_SZ_INSUFFICIENT);
7309e39c5baSBill Taylor } else {
7319e39c5baSBill Taylor cmn_err(CE_CONT, "Hermon: RESIZE_CQ command failed: "
7329e39c5baSBill Taylor "%08x\n", status);
7339e39c5baSBill Taylor if (status == HERMON_CMD_INVALID_STATUS) {
7349e39c5baSBill Taylor hermon_fm_ereport(state, HCA_SYS_ERR,
7359e39c5baSBill Taylor HCA_ERR_SRV_LOST);
7369e39c5baSBill Taylor }
7379e39c5baSBill Taylor return (ibc_get_ci_failure(0));
7389e39c5baSBill Taylor }
7399e39c5baSBill Taylor }
7409e39c5baSBill Taylor
7419e39c5baSBill Taylor /*
7429e39c5baSBill Taylor * For Hermon, we've alloc'd another handle structure and save off the
7439e39c5baSBill Taylor * important things in it. Then, in polling we check to see if there's
7449e39c5baSBill Taylor * a "resizing handle" and if so we look for the "special CQE", opcode
7459e39c5baSBill Taylor * 0x16, that indicates the transition to the new buffer.
7469e39c5baSBill Taylor *
7479e39c5baSBill Taylor * At that point, we'll adjust everything - including dereg and
7489e39c5baSBill Taylor * freeing of the original buffer, updating all the necessary fields
7499e39c5baSBill Taylor * in the cq_hdl, and setting up for the next cqe polling
7509e39c5baSBill Taylor */
7519e39c5baSBill Taylor
7529e39c5baSBill Taylor resize_hdl->cq_buf = buf;
7539e39c5baSBill Taylor resize_hdl->cq_bufsz = (1 << log_cq_size);
7549e39c5baSBill Taylor resize_hdl->cq_mrhdl = mr;
7559e39c5baSBill Taylor resize_hdl->cq_log_cqsz = log_cq_size;
7569e39c5baSBill Taylor
7579e39c5baSBill Taylor bcopy(&new_cqinfo, &(resize_hdl->cq_cqinfo),
7589e39c5baSBill Taylor sizeof (struct hermon_qalloc_info_s));
7599e39c5baSBill Taylor
7609e39c5baSBill Taylor /* now, save the address in the cq_handle */
7619e39c5baSBill Taylor cq->cq_resize_hdl = resize_hdl;
7629e39c5baSBill Taylor
7639e39c5baSBill Taylor /*
7649e39c5baSBill Taylor * Drop the CQ lock now.
7659e39c5baSBill Taylor */
7669e39c5baSBill Taylor
7679e39c5baSBill Taylor mutex_exit(&cq->cq_lock);
7689e39c5baSBill Taylor /*
7699e39c5baSBill Taylor * Fill in the return arguments (if necessary). This includes the
7709e39c5baSBill Taylor * real new completion queue size.
7719e39c5baSBill Taylor */
7729e39c5baSBill Taylor if (actual_size != NULL) {
7739e39c5baSBill Taylor *actual_size = (1 << log_cq_size) - 1;
7749e39c5baSBill Taylor }
7759e39c5baSBill Taylor
7769e39c5baSBill Taylor return (DDI_SUCCESS);
7779e39c5baSBill Taylor
7789e39c5baSBill Taylor cqresize_fail:
7799e39c5baSBill Taylor return (status);
7809e39c5baSBill Taylor }
7819e39c5baSBill Taylor
7829e39c5baSBill Taylor
7839e39c5baSBill Taylor /*
7849e39c5baSBill Taylor * hermon_cq_modify()
7859e39c5baSBill Taylor * Context: Can be called base context.
7869e39c5baSBill Taylor */
7879e39c5baSBill Taylor /* ARGSUSED */
7889e39c5baSBill Taylor int
hermon_cq_modify(hermon_state_t * state,hermon_cqhdl_t cq,uint_t count,uint_t usec,ibt_cq_handler_id_t hid,uint_t sleepflag)7899e39c5baSBill Taylor hermon_cq_modify(hermon_state_t *state, hermon_cqhdl_t cq,
7909e39c5baSBill Taylor uint_t count, uint_t usec, ibt_cq_handler_id_t hid, uint_t sleepflag)
7919e39c5baSBill Taylor {
7929e39c5baSBill Taylor int status;
7939e39c5baSBill Taylor hermon_hw_cqc_t cqc_entry;
7949e39c5baSBill Taylor
7959e39c5baSBill Taylor mutex_enter(&cq->cq_lock);
7969e39c5baSBill Taylor if (count != cq->cq_intmod_count ||
7979e39c5baSBill Taylor usec != cq->cq_intmod_usec) {
7989e39c5baSBill Taylor bzero(&cqc_entry, sizeof (hermon_hw_cqc_t));
7999e39c5baSBill Taylor cqc_entry.cq_max_cnt = count;
8009e39c5baSBill Taylor cqc_entry.cq_period = usec;
8019e39c5baSBill Taylor status = hermon_modify_cq_cmd_post(state, &cqc_entry,
8029e39c5baSBill Taylor cq->cq_cqnum, MODIFY_MODERATION_CQ, sleepflag);
8039e39c5baSBill Taylor if (status != HERMON_CMD_SUCCESS) {
8049e39c5baSBill Taylor mutex_exit(&cq->cq_lock);
805*17a2b317SBill Taylor cmn_err(CE_CONT, "Hermon: MODIFY_MODERATION_CQ "
806*17a2b317SBill Taylor "command failed: %08x\n", status);
8079e39c5baSBill Taylor if (status == HERMON_CMD_INVALID_STATUS) {
8089e39c5baSBill Taylor hermon_fm_ereport(state, HCA_SYS_ERR,
8099e39c5baSBill Taylor HCA_ERR_SRV_LOST);
8109e39c5baSBill Taylor }
8119e39c5baSBill Taylor return (ibc_get_ci_failure(0));
8129e39c5baSBill Taylor }
8139e39c5baSBill Taylor cq->cq_intmod_count = count;
8149e39c5baSBill Taylor cq->cq_intmod_usec = usec;
8159e39c5baSBill Taylor }
816*17a2b317SBill Taylor if (hid && (hid - 1 != cq->cq_eqnum)) {
817*17a2b317SBill Taylor bzero(&cqc_entry, sizeof (hermon_hw_cqc_t));
818*17a2b317SBill Taylor cqc_entry.c_eqn = HERMON_HID_TO_EQNUM(state, hid);
819*17a2b317SBill Taylor status = hermon_modify_cq_cmd_post(state, &cqc_entry,
820*17a2b317SBill Taylor cq->cq_cqnum, MODIFY_EQN, sleepflag);
821*17a2b317SBill Taylor if (status != HERMON_CMD_SUCCESS) {
822*17a2b317SBill Taylor mutex_exit(&cq->cq_lock);
823*17a2b317SBill Taylor cmn_err(CE_CONT, "Hermon: MODIFY_EQN command failed: "
824*17a2b317SBill Taylor "%08x\n", status);
825*17a2b317SBill Taylor if (status == HERMON_CMD_INVALID_STATUS) {
826*17a2b317SBill Taylor hermon_fm_ereport(state, HCA_SYS_ERR,
827*17a2b317SBill Taylor HCA_ERR_SRV_LOST);
828*17a2b317SBill Taylor }
829*17a2b317SBill Taylor return (ibc_get_ci_failure(0));
830*17a2b317SBill Taylor }
831*17a2b317SBill Taylor cq->cq_eqnum = hid - 1;
832*17a2b317SBill Taylor }
8339e39c5baSBill Taylor mutex_exit(&cq->cq_lock);
8349e39c5baSBill Taylor return (DDI_SUCCESS);
8359e39c5baSBill Taylor }
8369e39c5baSBill Taylor
8379e39c5baSBill Taylor /*
8389e39c5baSBill Taylor * hermon_cq_notify()
8399e39c5baSBill Taylor * Context: Can be called from interrupt or base context.
8409e39c5baSBill Taylor */
8419e39c5baSBill Taylor int
hermon_cq_notify(hermon_state_t * state,hermon_cqhdl_t cq,ibt_cq_notify_flags_t flags)8429e39c5baSBill Taylor hermon_cq_notify(hermon_state_t *state, hermon_cqhdl_t cq,
8439e39c5baSBill Taylor ibt_cq_notify_flags_t flags)
8449e39c5baSBill Taylor {
8459e39c5baSBill Taylor uint_t cmd;
8469e39c5baSBill Taylor ibt_status_t status;
8479e39c5baSBill Taylor
8489e39c5baSBill Taylor /* Validate IBT flags and call doorbell routine. */
8499e39c5baSBill Taylor if (flags == IBT_NEXT_COMPLETION) {
8509e39c5baSBill Taylor cmd = HERMON_CQDB_NOTIFY_CQ;
8519e39c5baSBill Taylor } else if (flags == IBT_NEXT_SOLICITED) {
8529e39c5baSBill Taylor cmd = HERMON_CQDB_NOTIFY_CQ_SOLICIT;
8539e39c5baSBill Taylor } else {
8549e39c5baSBill Taylor return (IBT_CQ_NOTIFY_TYPE_INVALID);
8559e39c5baSBill Taylor }
8569e39c5baSBill Taylor
8579e39c5baSBill Taylor status = hermon_cq_arm_doorbell(state, cq, cmd);
8589e39c5baSBill Taylor return (status);
8599e39c5baSBill Taylor }
8609e39c5baSBill Taylor
8619e39c5baSBill Taylor
8629e39c5baSBill Taylor /*
8639e39c5baSBill Taylor * hermon_cq_poll()
8649e39c5baSBill Taylor * Context: Can be called from interrupt or base context.
8659e39c5baSBill Taylor */
8669e39c5baSBill Taylor int
hermon_cq_poll(hermon_state_t * state,hermon_cqhdl_t cq,ibt_wc_t * wc_p,uint_t num_wc,uint_t * num_polled)8679e39c5baSBill Taylor hermon_cq_poll(hermon_state_t *state, hermon_cqhdl_t cq, ibt_wc_t *wc_p,
8689e39c5baSBill Taylor uint_t num_wc, uint_t *num_polled)
8699e39c5baSBill Taylor {
8709e39c5baSBill Taylor hermon_hw_cqe_t *cqe;
8719e39c5baSBill Taylor uint_t opcode;
872*17a2b317SBill Taylor uint32_t cons_indx, wrap_around_mask, shift, mask;
8739e39c5baSBill Taylor uint32_t polled_cnt, spec_op = 0;
8749e39c5baSBill Taylor int status;
8759e39c5baSBill Taylor
8769e39c5baSBill Taylor /*
8779e39c5baSBill Taylor * Check for user-mappable CQ memory. Note: We do not allow kernel
8789e39c5baSBill Taylor * clients to poll CQ memory that is accessible directly by the user.
8799e39c5baSBill Taylor * If the CQ memory is user accessible, then return an error.
8809e39c5baSBill Taylor */
8819e39c5baSBill Taylor if (cq->cq_is_umap) {
8829e39c5baSBill Taylor return (IBT_CQ_HDL_INVALID);
8839e39c5baSBill Taylor }
8849e39c5baSBill Taylor
8859e39c5baSBill Taylor mutex_enter(&cq->cq_lock);
8869e39c5baSBill Taylor
8879e39c5baSBill Taylor /* Get the consumer index */
8889e39c5baSBill Taylor cons_indx = cq->cq_consindx;
889*17a2b317SBill Taylor shift = cq->cq_log_cqsz;
890*17a2b317SBill Taylor mask = cq->cq_bufsz;
8919e39c5baSBill Taylor
8929e39c5baSBill Taylor /*
8939e39c5baSBill Taylor * Calculate the wrap around mask. Note: This operation only works
8949e39c5baSBill Taylor * because all Hermon completion queues have power-of-2 sizes
8959e39c5baSBill Taylor */
8969e39c5baSBill Taylor wrap_around_mask = (cq->cq_bufsz - 1);
8979e39c5baSBill Taylor
8989e39c5baSBill Taylor /* Calculate the pointer to the first CQ entry */
8999e39c5baSBill Taylor cqe = &cq->cq_buf[cons_indx & wrap_around_mask];
9009e39c5baSBill Taylor
9019e39c5baSBill Taylor /*
9029e39c5baSBill Taylor * Keep pulling entries from the CQ until we find an entry owned by
9039e39c5baSBill Taylor * the hardware. As long as there the CQE's owned by SW, process
9049e39c5baSBill Taylor * each entry by calling hermon_cq_cqe_consume() and updating the CQ
9059e39c5baSBill Taylor * consumer index. Note: We only update the consumer index if
9069e39c5baSBill Taylor * hermon_cq_cqe_consume() returns HERMON_CQ_SYNC_AND_DB. Otherwise,
9079e39c5baSBill Taylor * it indicates that we are going to "recycle" the CQE (probably
9089e39c5baSBill Taylor * because it is a error CQE and corresponds to more than one
9099e39c5baSBill Taylor * completion).
9109e39c5baSBill Taylor */
9119e39c5baSBill Taylor polled_cnt = 0;
912*17a2b317SBill Taylor while (HERMON_CQE_OWNER_IS_SW(cq, cqe, cons_indx, shift, mask)) {
9139e39c5baSBill Taylor if (cq->cq_resize_hdl != 0) { /* in midst of resize */
9149e39c5baSBill Taylor /* peek at the opcode */
9159e39c5baSBill Taylor opcode = HERMON_CQE_OPCODE_GET(cq, cqe);
9169e39c5baSBill Taylor if (opcode == HERMON_CQE_RCV_RESIZE_CODE) {
9179e39c5baSBill Taylor hermon_cq_resize_helper(state, cq);
9189e39c5baSBill Taylor
9199e39c5baSBill Taylor /* Increment the consumer index */
9209e39c5baSBill Taylor cons_indx = (cons_indx + 1);
9219e39c5baSBill Taylor spec_op = 1; /* plus one for the limiting CQE */
9229e39c5baSBill Taylor
9239e39c5baSBill Taylor wrap_around_mask = (cq->cq_bufsz - 1);
9249e39c5baSBill Taylor
9259e39c5baSBill Taylor /* Update the pointer to the next CQ entry */
9269e39c5baSBill Taylor cqe = &cq->cq_buf[cons_indx & wrap_around_mask];
9279e39c5baSBill Taylor
9289e39c5baSBill Taylor continue;
9299e39c5baSBill Taylor }
9309e39c5baSBill Taylor } /* in resizing CQ */
9319e39c5baSBill Taylor
9329e39c5baSBill Taylor /*
9339e39c5baSBill Taylor * either resizing and not the special opcode, or
9349e39c5baSBill Taylor * not resizing at all
9359e39c5baSBill Taylor */
9369e39c5baSBill Taylor hermon_cq_cqe_consume(state, cq, cqe, &wc_p[polled_cnt++]);
9379e39c5baSBill Taylor
9389e39c5baSBill Taylor /* Increment the consumer index */
9399e39c5baSBill Taylor cons_indx = (cons_indx + 1);
9409e39c5baSBill Taylor
9419e39c5baSBill Taylor /* Update the pointer to the next CQ entry */
9429e39c5baSBill Taylor cqe = &cq->cq_buf[cons_indx & wrap_around_mask];
9439e39c5baSBill Taylor
9449e39c5baSBill Taylor /*
9459e39c5baSBill Taylor * If we have run out of space to store work completions,
9469e39c5baSBill Taylor * then stop and return the ones we have pulled of the CQ.
9479e39c5baSBill Taylor */
9489e39c5baSBill Taylor if (polled_cnt >= num_wc) {
9499e39c5baSBill Taylor break;
9509e39c5baSBill Taylor }
9519e39c5baSBill Taylor }
9529e39c5baSBill Taylor
9539e39c5baSBill Taylor /*
9549e39c5baSBill Taylor * Now we only ring the doorbell (to update the consumer index) if
955*17a2b317SBill Taylor * we've actually consumed a CQ entry.
9569e39c5baSBill Taylor */
9579e39c5baSBill Taylor if ((polled_cnt != 0) && (cq->cq_consindx != cons_indx)) {
9589e39c5baSBill Taylor /*
9599e39c5baSBill Taylor * Update the consumer index in both the CQ handle and the
9609e39c5baSBill Taylor * doorbell record.
9619e39c5baSBill Taylor */
9629e39c5baSBill Taylor cq->cq_consindx = cons_indx;
9639e39c5baSBill Taylor hermon_cq_update_ci_doorbell(cq);
9649e39c5baSBill Taylor
9659e39c5baSBill Taylor } else if (polled_cnt == 0) {
9669e39c5baSBill Taylor if (spec_op != 0) {
9679e39c5baSBill Taylor /* if we got the special opcode, update the consindx */
9689e39c5baSBill Taylor cq->cq_consindx = cons_indx;
9699e39c5baSBill Taylor hermon_cq_update_ci_doorbell(cq);
9709e39c5baSBill Taylor }
9719e39c5baSBill Taylor }
9729e39c5baSBill Taylor
9739e39c5baSBill Taylor mutex_exit(&cq->cq_lock);
9749e39c5baSBill Taylor
9759e39c5baSBill Taylor /* Set "num_polled" (if necessary) */
9769e39c5baSBill Taylor if (num_polled != NULL) {
9779e39c5baSBill Taylor *num_polled = polled_cnt;
9789e39c5baSBill Taylor }
9799e39c5baSBill Taylor
9809e39c5baSBill Taylor /* Set CQ_EMPTY condition if needed, otherwise return success */
9819e39c5baSBill Taylor if (polled_cnt == 0) {
9829e39c5baSBill Taylor status = IBT_CQ_EMPTY;
9839e39c5baSBill Taylor } else {
9849e39c5baSBill Taylor status = DDI_SUCCESS;
9859e39c5baSBill Taylor }
9869e39c5baSBill Taylor
9879e39c5baSBill Taylor /*
9889e39c5baSBill Taylor * Check if the system is currently panicking. If it is, then call
9899e39c5baSBill Taylor * the Hermon interrupt service routine. This step is necessary here
9909e39c5baSBill Taylor * because we might be in a polled I/O mode and without the call to
991