1fe56b9e6SYuval Mintz /* QLogic qed NIC Driver 2fe56b9e6SYuval Mintz * Copyright (c) 2015 QLogic Corporation 3fe56b9e6SYuval Mintz * 4fe56b9e6SYuval Mintz * This software is available under the terms of the GNU General Public License 5fe56b9e6SYuval Mintz * (GPL) Version 2, available from the file COPYING in the main directory of 6fe56b9e6SYuval Mintz * this source tree. 7fe56b9e6SYuval Mintz */ 8fe56b9e6SYuval Mintz 9fe56b9e6SYuval Mintz #include <linux/types.h> 10fe56b9e6SYuval Mintz #include <asm/byteorder.h> 11fe56b9e6SYuval Mintz #include <linux/io.h> 12fe56b9e6SYuval Mintz #include <linux/delay.h> 13fe56b9e6SYuval Mintz #include <linux/dma-mapping.h> 14fe56b9e6SYuval Mintz #include <linux/errno.h> 15fe56b9e6SYuval Mintz #include <linux/kernel.h> 16fe56b9e6SYuval Mintz #include <linux/list.h> 17fe56b9e6SYuval Mintz #include <linux/pci.h> 18fe56b9e6SYuval Mintz #include <linux/slab.h> 19fe56b9e6SYuval Mintz #include <linux/spinlock.h> 20fe56b9e6SYuval Mintz #include <linux/string.h> 21fe56b9e6SYuval Mintz #include "qed.h" 22fe56b9e6SYuval Mintz #include "qed_cxt.h" 23fe56b9e6SYuval Mintz #include "qed_dev_api.h" 24fe56b9e6SYuval Mintz #include "qed_hsi.h" 25fe56b9e6SYuval Mintz #include "qed_hw.h" 26fe56b9e6SYuval Mintz #include "qed_int.h" 27fe56b9e6SYuval Mintz #include "qed_mcp.h" 28fe56b9e6SYuval Mintz #include "qed_reg_addr.h" 29fe56b9e6SYuval Mintz #include "qed_sp.h" 30fe56b9e6SYuval Mintz 31fe56b9e6SYuval Mintz /*************************************************************************** 32fe56b9e6SYuval Mintz * Structures & Definitions 33fe56b9e6SYuval Mintz ***************************************************************************/ 34fe56b9e6SYuval Mintz 35fe56b9e6SYuval Mintz #define SPQ_HIGH_PRI_RESERVE_DEFAULT (1) 36fe56b9e6SYuval Mintz #define SPQ_BLOCK_SLEEP_LENGTH (1000) 37fe56b9e6SYuval Mintz 38fe56b9e6SYuval Mintz /*************************************************************************** 39fe56b9e6SYuval Mintz * Blocking Imp. (BLOCK/EBLOCK mode) 40fe56b9e6SYuval Mintz ***************************************************************************/ 41fe56b9e6SYuval Mintz static void qed_spq_blocking_cb(struct qed_hwfn *p_hwfn, 42fe56b9e6SYuval Mintz void *cookie, 43fe56b9e6SYuval Mintz union event_ring_data *data, 44fe56b9e6SYuval Mintz u8 fw_return_code) 45fe56b9e6SYuval Mintz { 46fe56b9e6SYuval Mintz struct qed_spq_comp_done *comp_done; 47fe56b9e6SYuval Mintz 48fe56b9e6SYuval Mintz comp_done = (struct qed_spq_comp_done *)cookie; 49fe56b9e6SYuval Mintz 50fe56b9e6SYuval Mintz comp_done->done = 0x1; 51fe56b9e6SYuval Mintz comp_done->fw_return_code = fw_return_code; 52fe56b9e6SYuval Mintz 53fe56b9e6SYuval Mintz /* make update visible to waiting thread */ 54fe56b9e6SYuval Mintz smp_wmb(); 55fe56b9e6SYuval Mintz } 56fe56b9e6SYuval Mintz 57fe56b9e6SYuval Mintz static int qed_spq_block(struct qed_hwfn *p_hwfn, 58fe56b9e6SYuval Mintz struct qed_spq_entry *p_ent, 59fe56b9e6SYuval Mintz u8 *p_fw_ret) 60fe56b9e6SYuval Mintz { 61fe56b9e6SYuval Mintz int sleep_count = SPQ_BLOCK_SLEEP_LENGTH; 62fe56b9e6SYuval Mintz struct qed_spq_comp_done *comp_done; 63fe56b9e6SYuval Mintz int rc; 64fe56b9e6SYuval Mintz 65fe56b9e6SYuval Mintz comp_done = (struct qed_spq_comp_done *)p_ent->comp_cb.cookie; 66fe56b9e6SYuval Mintz while (sleep_count) { 67fe56b9e6SYuval Mintz /* validate we receive completion update */ 68fe56b9e6SYuval Mintz smp_rmb(); 69fe56b9e6SYuval Mintz if (comp_done->done == 1) { 70fe56b9e6SYuval Mintz if (p_fw_ret) 71fe56b9e6SYuval Mintz *p_fw_ret = comp_done->fw_return_code; 72fe56b9e6SYuval Mintz return 0; 73fe56b9e6SYuval Mintz } 74fe56b9e6SYuval Mintz usleep_range(5000, 10000); 75fe56b9e6SYuval Mintz sleep_count--; 76fe56b9e6SYuval Mintz } 77fe56b9e6SYuval Mintz 78fe56b9e6SYuval Mintz DP_INFO(p_hwfn, "Ramrod is stuck, requesting MCP drain\n"); 79fe56b9e6SYuval Mintz rc = qed_mcp_drain(p_hwfn, p_hwfn->p_main_ptt); 80fe56b9e6SYuval Mintz if (rc != 0) 81fe56b9e6SYuval Mintz DP_NOTICE(p_hwfn, "MCP drain failed\n"); 82fe56b9e6SYuval Mintz 83fe56b9e6SYuval Mintz /* Retry after drain */ 84fe56b9e6SYuval Mintz sleep_count = SPQ_BLOCK_SLEEP_LENGTH; 85fe56b9e6SYuval Mintz while (sleep_count) { 86fe56b9e6SYuval Mintz /* validate we receive completion update */ 87fe56b9e6SYuval Mintz smp_rmb(); 88fe56b9e6SYuval Mintz if (comp_done->done == 1) { 89fe56b9e6SYuval Mintz if (p_fw_ret) 90fe56b9e6SYuval Mintz *p_fw_ret = comp_done->fw_return_code; 91fe56b9e6SYuval Mintz return 0; 92fe56b9e6SYuval Mintz } 93fe56b9e6SYuval Mintz usleep_range(5000, 10000); 94fe56b9e6SYuval Mintz sleep_count--; 95fe56b9e6SYuval Mintz } 96fe56b9e6SYuval Mintz 97fe56b9e6SYuval Mintz if (comp_done->done == 1) { 98fe56b9e6SYuval Mintz if (p_fw_ret) 99fe56b9e6SYuval Mintz *p_fw_ret = comp_done->fw_return_code; 100fe56b9e6SYuval Mintz return 0; 101fe56b9e6SYuval Mintz } 102fe56b9e6SYuval Mintz 103fe56b9e6SYuval Mintz DP_NOTICE(p_hwfn, "Ramrod is stuck, MCP drain failed\n"); 104fe56b9e6SYuval Mintz 105fe56b9e6SYuval Mintz return -EBUSY; 106fe56b9e6SYuval Mintz } 107fe56b9e6SYuval Mintz 108fe56b9e6SYuval Mintz /*************************************************************************** 109fe56b9e6SYuval Mintz * SPQ entries inner API 110fe56b9e6SYuval Mintz ***************************************************************************/ 111fe56b9e6SYuval Mintz static int 112fe56b9e6SYuval Mintz qed_spq_fill_entry(struct qed_hwfn *p_hwfn, 113fe56b9e6SYuval Mintz struct qed_spq_entry *p_ent) 114fe56b9e6SYuval Mintz { 115fe56b9e6SYuval Mintz p_ent->elem.hdr.echo = 0; 116fe56b9e6SYuval Mintz p_hwfn->p_spq->echo_idx++; 117fe56b9e6SYuval Mintz p_ent->flags = 0; 118fe56b9e6SYuval Mintz 119fe56b9e6SYuval Mintz switch (p_ent->comp_mode) { 120fe56b9e6SYuval Mintz case QED_SPQ_MODE_EBLOCK: 121fe56b9e6SYuval Mintz case QED_SPQ_MODE_BLOCK: 122fe56b9e6SYuval Mintz p_ent->comp_cb.function = qed_spq_blocking_cb; 123fe56b9e6SYuval Mintz break; 124fe56b9e6SYuval Mintz case QED_SPQ_MODE_CB: 125fe56b9e6SYuval Mintz break; 126fe56b9e6SYuval Mintz default: 127fe56b9e6SYuval Mintz DP_NOTICE(p_hwfn, "Unknown SPQE completion mode %d\n", 128fe56b9e6SYuval Mintz p_ent->comp_mode); 129fe56b9e6SYuval Mintz return -EINVAL; 130fe56b9e6SYuval Mintz } 131fe56b9e6SYuval Mintz 132fe56b9e6SYuval Mintz DP_VERBOSE(p_hwfn, QED_MSG_SPQ, 133fe56b9e6SYuval Mintz "Ramrod header: [CID 0x%08x CMD 0x%02x protocol 0x%02x] Data pointer: [%08x:%08x] Completion Mode: %s\n", 134fe56b9e6SYuval Mintz p_ent->elem.hdr.cid, 135fe56b9e6SYuval Mintz p_ent->elem.hdr.cmd_id, 136fe56b9e6SYuval Mintz p_ent->elem.hdr.protocol_id, 137fe56b9e6SYuval Mintz p_ent->elem.data_ptr.hi, 138fe56b9e6SYuval Mintz p_ent->elem.data_ptr.lo, 139fe56b9e6SYuval Mintz D_TRINE(p_ent->comp_mode, QED_SPQ_MODE_EBLOCK, 140fe56b9e6SYuval Mintz QED_SPQ_MODE_BLOCK, "MODE_EBLOCK", "MODE_BLOCK", 141fe56b9e6SYuval Mintz "MODE_CB")); 142fe56b9e6SYuval Mintz 143fe56b9e6SYuval Mintz return 0; 144fe56b9e6SYuval Mintz } 145fe56b9e6SYuval Mintz 146fe56b9e6SYuval Mintz /*************************************************************************** 147fe56b9e6SYuval Mintz * HSI access 148fe56b9e6SYuval Mintz ***************************************************************************/ 149fe56b9e6SYuval Mintz static void qed_spq_hw_initialize(struct qed_hwfn *p_hwfn, 150fe56b9e6SYuval Mintz struct qed_spq *p_spq) 151fe56b9e6SYuval Mintz { 152fe56b9e6SYuval Mintz u16 pq; 153fe56b9e6SYuval Mintz struct qed_cxt_info cxt_info; 154fe56b9e6SYuval Mintz struct core_conn_context *p_cxt; 155fe56b9e6SYuval Mintz union qed_qm_pq_params pq_params; 156fe56b9e6SYuval Mintz int rc; 157fe56b9e6SYuval Mintz 158fe56b9e6SYuval Mintz cxt_info.iid = p_spq->cid; 159fe56b9e6SYuval Mintz 160fe56b9e6SYuval Mintz rc = qed_cxt_get_cid_info(p_hwfn, &cxt_info); 161fe56b9e6SYuval Mintz 162fe56b9e6SYuval Mintz if (rc < 0) { 163fe56b9e6SYuval Mintz DP_NOTICE(p_hwfn, "Cannot find context info for cid=%d\n", 164fe56b9e6SYuval Mintz p_spq->cid); 165fe56b9e6SYuval Mintz return; 166fe56b9e6SYuval Mintz } 167fe56b9e6SYuval Mintz 168fe56b9e6SYuval Mintz p_cxt = cxt_info.p_cxt; 169fe56b9e6SYuval Mintz 170fe56b9e6SYuval Mintz SET_FIELD(p_cxt->xstorm_ag_context.flags10, 171fe56b9e6SYuval Mintz XSTORM_CORE_CONN_AG_CTX_DQ_CF_EN, 1); 172fe56b9e6SYuval Mintz SET_FIELD(p_cxt->xstorm_ag_context.flags1, 173fe56b9e6SYuval Mintz XSTORM_CORE_CONN_AG_CTX_DQ_CF_ACTIVE, 1); 174fe56b9e6SYuval Mintz SET_FIELD(p_cxt->xstorm_ag_context.flags9, 175fe56b9e6SYuval Mintz XSTORM_CORE_CONN_AG_CTX_CONSOLID_PROD_CF_EN, 1); 176fe56b9e6SYuval Mintz 177fe56b9e6SYuval Mintz /* QM physical queue */ 178fe56b9e6SYuval Mintz memset(&pq_params, 0, sizeof(pq_params)); 179fe56b9e6SYuval Mintz pq_params.core.tc = LB_TC; 180fe56b9e6SYuval Mintz pq = qed_get_qm_pq(p_hwfn, PROTOCOLID_CORE, &pq_params); 181fe56b9e6SYuval Mintz p_cxt->xstorm_ag_context.physical_q0 = cpu_to_le16(pq); 182fe56b9e6SYuval Mintz 183fe56b9e6SYuval Mintz p_cxt->xstorm_st_context.spq_base_lo = 184fe56b9e6SYuval Mintz DMA_LO_LE(p_spq->chain.p_phys_addr); 185fe56b9e6SYuval Mintz p_cxt->xstorm_st_context.spq_base_hi = 186fe56b9e6SYuval Mintz DMA_HI_LE(p_spq->chain.p_phys_addr); 187fe56b9e6SYuval Mintz 188fe56b9e6SYuval Mintz p_cxt->xstorm_st_context.consolid_base_addr.lo = 189fe56b9e6SYuval Mintz DMA_LO_LE(p_hwfn->p_consq->chain.p_phys_addr); 190fe56b9e6SYuval Mintz p_cxt->xstorm_st_context.consolid_base_addr.hi = 191fe56b9e6SYuval Mintz DMA_HI_LE(p_hwfn->p_consq->chain.p_phys_addr); 192fe56b9e6SYuval Mintz } 193fe56b9e6SYuval Mintz 194fe56b9e6SYuval Mintz static int qed_spq_hw_post(struct qed_hwfn *p_hwfn, 195fe56b9e6SYuval Mintz struct qed_spq *p_spq, 196fe56b9e6SYuval Mintz struct qed_spq_entry *p_ent) 197fe56b9e6SYuval Mintz { 198fe56b9e6SYuval Mintz struct qed_chain *p_chain = &p_hwfn->p_spq->chain; 199fe56b9e6SYuval Mintz struct slow_path_element *elem; 200fe56b9e6SYuval Mintz struct core_db_data db; 201fe56b9e6SYuval Mintz 202fe56b9e6SYuval Mintz elem = qed_chain_produce(p_chain); 203fe56b9e6SYuval Mintz if (!elem) { 204fe56b9e6SYuval Mintz DP_NOTICE(p_hwfn, "Failed to produce from SPQ chain\n"); 205fe56b9e6SYuval Mintz return -EINVAL; 206fe56b9e6SYuval Mintz } 207fe56b9e6SYuval Mintz 208fe56b9e6SYuval Mintz *elem = p_ent->elem; /* struct assignment */ 209fe56b9e6SYuval Mintz 210fe56b9e6SYuval Mintz /* send a doorbell on the slow hwfn session */ 211fe56b9e6SYuval Mintz memset(&db, 0, sizeof(db)); 212fe56b9e6SYuval Mintz SET_FIELD(db.params, CORE_DB_DATA_DEST, DB_DEST_XCM); 213fe56b9e6SYuval Mintz SET_FIELD(db.params, CORE_DB_DATA_AGG_CMD, DB_AGG_CMD_SET); 214fe56b9e6SYuval Mintz SET_FIELD(db.params, CORE_DB_DATA_AGG_VAL_SEL, 215fe56b9e6SYuval Mintz DQ_XCM_CORE_SPQ_PROD_CMD); 216fe56b9e6SYuval Mintz db.agg_flags = DQ_XCM_CORE_DQ_CF_CMD; 217fe56b9e6SYuval Mintz 218fe56b9e6SYuval Mintz /* validate producer is up to-date */ 219fe56b9e6SYuval Mintz rmb(); 220fe56b9e6SYuval Mintz 221fe56b9e6SYuval Mintz db.spq_prod = cpu_to_le16(qed_chain_get_prod_idx(p_chain)); 222fe56b9e6SYuval Mintz 223fe56b9e6SYuval Mintz /* do not reorder */ 224fe56b9e6SYuval Mintz barrier(); 225fe56b9e6SYuval Mintz 226fe56b9e6SYuval Mintz DOORBELL(p_hwfn, qed_db_addr(p_spq->cid, DQ_DEMS_LEGACY), *(u32 *)&db); 227fe56b9e6SYuval Mintz 228fe56b9e6SYuval Mintz /* make sure doorbell is rang */ 229fe56b9e6SYuval Mintz mmiowb(); 230fe56b9e6SYuval Mintz 231fe56b9e6SYuval Mintz DP_VERBOSE(p_hwfn, QED_MSG_SPQ, 232fe56b9e6SYuval Mintz "Doorbelled [0x%08x, CID 0x%08x] with Flags: %02x agg_params: %02x, prod: %04x\n", 233fe56b9e6SYuval Mintz qed_db_addr(p_spq->cid, DQ_DEMS_LEGACY), 234fe56b9e6SYuval Mintz p_spq->cid, db.params, db.agg_flags, 235fe56b9e6SYuval Mintz qed_chain_get_prod_idx(p_chain)); 236fe56b9e6SYuval Mintz 237fe56b9e6SYuval Mintz return 0; 238fe56b9e6SYuval Mintz } 239fe56b9e6SYuval Mintz 240fe56b9e6SYuval Mintz /*************************************************************************** 241fe56b9e6SYuval Mintz * Asynchronous events 242fe56b9e6SYuval Mintz ***************************************************************************/ 243fe56b9e6SYuval Mintz static int 244fe56b9e6SYuval Mintz qed_async_event_completion(struct qed_hwfn *p_hwfn, 245fe56b9e6SYuval Mintz struct event_ring_entry *p_eqe) 246fe56b9e6SYuval Mintz { 247fe56b9e6SYuval Mintz DP_NOTICE(p_hwfn, 248fe56b9e6SYuval Mintz "Unknown Async completion for protocol: %d\n", 249fe56b9e6SYuval Mintz p_eqe->protocol_id); 250fe56b9e6SYuval Mintz return -EINVAL; 251fe56b9e6SYuval Mintz } 252fe56b9e6SYuval Mintz 253fe56b9e6SYuval Mintz /*************************************************************************** 254fe56b9e6SYuval Mintz * EQ API 255fe56b9e6SYuval Mintz ***************************************************************************/ 256fe56b9e6SYuval Mintz void qed_eq_prod_update(struct qed_hwfn *p_hwfn, 257fe56b9e6SYuval Mintz u16 prod) 258fe56b9e6SYuval Mintz { 259fe56b9e6SYuval Mintz u32 addr = GTT_BAR0_MAP_REG_USDM_RAM + 260fe56b9e6SYuval Mintz USTORM_EQE_CONS_OFFSET(p_hwfn->rel_pf_id); 261fe56b9e6SYuval Mintz 262fe56b9e6SYuval Mintz REG_WR16(p_hwfn, addr, prod); 263fe56b9e6SYuval Mintz 264fe56b9e6SYuval Mintz /* keep prod updates ordered */ 265fe56b9e6SYuval Mintz mmiowb(); 266fe56b9e6SYuval Mintz } 267fe56b9e6SYuval Mintz 268fe56b9e6SYuval Mintz int qed_eq_completion(struct qed_hwfn *p_hwfn, 269fe56b9e6SYuval Mintz void *cookie) 270fe56b9e6SYuval Mintz 271fe56b9e6SYuval Mintz { 272fe56b9e6SYuval Mintz struct qed_eq *p_eq = cookie; 273fe56b9e6SYuval Mintz struct qed_chain *p_chain = &p_eq->chain; 274fe56b9e6SYuval Mintz int rc = 0; 275fe56b9e6SYuval Mintz 276fe56b9e6SYuval Mintz /* take a snapshot of the FW consumer */ 277fe56b9e6SYuval Mintz u16 fw_cons_idx = le16_to_cpu(*p_eq->p_fw_cons); 278fe56b9e6SYuval Mintz 279fe56b9e6SYuval Mintz DP_VERBOSE(p_hwfn, QED_MSG_SPQ, "fw_cons_idx %x\n", fw_cons_idx); 280fe56b9e6SYuval Mintz 281fe56b9e6SYuval Mintz /* Need to guarantee the fw_cons index we use points to a usuable 282fe56b9e6SYuval Mintz * element (to comply with our chain), so our macros would comply 283fe56b9e6SYuval Mintz */ 284fe56b9e6SYuval Mintz if ((fw_cons_idx & qed_chain_get_usable_per_page(p_chain)) == 285fe56b9e6SYuval Mintz qed_chain_get_usable_per_page(p_chain)) 286fe56b9e6SYuval Mintz fw_cons_idx += qed_chain_get_unusable_per_page(p_chain); 287fe56b9e6SYuval Mintz 288fe56b9e6SYuval Mintz /* Complete current segment of eq entries */ 289fe56b9e6SYuval Mintz while (fw_cons_idx != qed_chain_get_cons_idx(p_chain)) { 290fe56b9e6SYuval Mintz struct event_ring_entry *p_eqe = qed_chain_consume(p_chain); 291fe56b9e6SYuval Mintz 292fe56b9e6SYuval Mintz if (!p_eqe) { 293fe56b9e6SYuval Mintz rc = -EINVAL; 294fe56b9e6SYuval Mintz break; 295fe56b9e6SYuval Mintz } 296fe56b9e6SYuval Mintz 297fe56b9e6SYuval Mintz DP_VERBOSE(p_hwfn, QED_MSG_SPQ, 298fe56b9e6SYuval Mintz "op %x prot %x res0 %x echo %x fwret %x flags %x\n", 299fe56b9e6SYuval Mintz p_eqe->opcode, 300fe56b9e6SYuval Mintz p_eqe->protocol_id, 301fe56b9e6SYuval Mintz p_eqe->reserved0, 302fe56b9e6SYuval Mintz le16_to_cpu(p_eqe->echo), 303fe56b9e6SYuval Mintz p_eqe->fw_return_code, 304fe56b9e6SYuval Mintz p_eqe->flags); 305fe56b9e6SYuval Mintz 306fe56b9e6SYuval Mintz if (GET_FIELD(p_eqe->flags, EVENT_RING_ENTRY_ASYNC)) { 307fe56b9e6SYuval Mintz if (qed_async_event_completion(p_hwfn, p_eqe)) 308fe56b9e6SYuval Mintz rc = -EINVAL; 309fe56b9e6SYuval Mintz } else if (qed_spq_completion(p_hwfn, 310fe56b9e6SYuval Mintz p_eqe->echo, 311fe56b9e6SYuval Mintz p_eqe->fw_return_code, 312fe56b9e6SYuval Mintz &p_eqe->data)) { 313fe56b9e6SYuval Mintz rc = -EINVAL; 314fe56b9e6SYuval Mintz } 315fe56b9e6SYuval Mintz 316fe56b9e6SYuval Mintz qed_chain_recycle_consumed(p_chain); 317fe56b9e6SYuval Mintz } 318fe56b9e6SYuval Mintz 319fe56b9e6SYuval Mintz qed_eq_prod_update(p_hwfn, qed_chain_get_prod_idx(p_chain)); 320fe56b9e6SYuval Mintz 321fe56b9e6SYuval Mintz return rc; 322fe56b9e6SYuval Mintz } 323fe56b9e6SYuval Mintz 324fe56b9e6SYuval Mintz struct qed_eq *qed_eq_alloc(struct qed_hwfn *p_hwfn, 325fe56b9e6SYuval Mintz u16 num_elem) 326fe56b9e6SYuval Mintz { 327fe56b9e6SYuval Mintz struct qed_eq *p_eq; 328fe56b9e6SYuval Mintz 329fe56b9e6SYuval Mintz /* Allocate EQ struct */ 330fe56b9e6SYuval Mintz p_eq = kzalloc(sizeof(*p_eq), GFP_ATOMIC); 331fe56b9e6SYuval Mintz if (!p_eq) { 332fe56b9e6SYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate `struct qed_eq'\n"); 333fe56b9e6SYuval Mintz return NULL; 334fe56b9e6SYuval Mintz } 335fe56b9e6SYuval Mintz 336fe56b9e6SYuval Mintz /* Allocate and initialize EQ chain*/ 337fe56b9e6SYuval Mintz if (qed_chain_alloc(p_hwfn->cdev, 338fe56b9e6SYuval Mintz QED_CHAIN_USE_TO_PRODUCE, 339fe56b9e6SYuval Mintz QED_CHAIN_MODE_PBL, 340fe56b9e6SYuval Mintz num_elem, 341fe56b9e6SYuval Mintz sizeof(union event_ring_element), 342fe56b9e6SYuval Mintz &p_eq->chain)) { 343fe56b9e6SYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate eq chain\n"); 344fe56b9e6SYuval Mintz goto eq_allocate_fail; 345fe56b9e6SYuval Mintz } 346fe56b9e6SYuval Mintz 347fe56b9e6SYuval Mintz /* register EQ completion on the SP SB */ 348fe56b9e6SYuval Mintz qed_int_register_cb(p_hwfn, 349fe56b9e6SYuval Mintz qed_eq_completion, 350fe56b9e6SYuval Mintz p_eq, 351fe56b9e6SYuval Mintz &p_eq->eq_sb_index, 352fe56b9e6SYuval Mintz &p_eq->p_fw_cons); 353fe56b9e6SYuval Mintz 354fe56b9e6SYuval Mintz return p_eq; 355fe56b9e6SYuval Mintz 356fe56b9e6SYuval Mintz eq_allocate_fail: 357fe56b9e6SYuval Mintz qed_eq_free(p_hwfn, p_eq); 358fe56b9e6SYuval Mintz return NULL; 359fe56b9e6SYuval Mintz } 360fe56b9e6SYuval Mintz 361fe56b9e6SYuval Mintz void qed_eq_setup(struct qed_hwfn *p_hwfn, 362fe56b9e6SYuval Mintz struct qed_eq *p_eq) 363fe56b9e6SYuval Mintz { 364fe56b9e6SYuval Mintz qed_chain_reset(&p_eq->chain); 365fe56b9e6SYuval Mintz } 366fe56b9e6SYuval Mintz 367fe56b9e6SYuval Mintz void qed_eq_free(struct qed_hwfn *p_hwfn, 368fe56b9e6SYuval Mintz struct qed_eq *p_eq) 369fe56b9e6SYuval Mintz { 370fe56b9e6SYuval Mintz if (!p_eq) 371fe56b9e6SYuval Mintz return; 372fe56b9e6SYuval Mintz qed_chain_free(p_hwfn->cdev, &p_eq->chain); 373fe56b9e6SYuval Mintz kfree(p_eq); 374fe56b9e6SYuval Mintz } 375fe56b9e6SYuval Mintz 376fe56b9e6SYuval Mintz /*************************************************************************** 377fe56b9e6SYuval Mintz * Slow hwfn Queue (spq) 378fe56b9e6SYuval Mintz ***************************************************************************/ 379fe56b9e6SYuval Mintz void qed_spq_setup(struct qed_hwfn *p_hwfn) 380fe56b9e6SYuval Mintz { 381fe56b9e6SYuval Mintz struct qed_spq *p_spq = p_hwfn->p_spq; 382fe56b9e6SYuval Mintz struct qed_spq_entry *p_virt = NULL; 383fe56b9e6SYuval Mintz dma_addr_t p_phys = 0; 384fe56b9e6SYuval Mintz unsigned int i = 0; 385fe56b9e6SYuval Mintz 386fe56b9e6SYuval Mintz INIT_LIST_HEAD(&p_spq->pending); 387fe56b9e6SYuval Mintz INIT_LIST_HEAD(&p_spq->completion_pending); 388fe56b9e6SYuval Mintz INIT_LIST_HEAD(&p_spq->free_pool); 389fe56b9e6SYuval Mintz INIT_LIST_HEAD(&p_spq->unlimited_pending); 390fe56b9e6SYuval Mintz spin_lock_init(&p_spq->lock); 391fe56b9e6SYuval Mintz 392fe56b9e6SYuval Mintz /* SPQ empty pool */ 393fe56b9e6SYuval Mintz p_phys = p_spq->p_phys + offsetof(struct qed_spq_entry, ramrod); 394fe56b9e6SYuval Mintz p_virt = p_spq->p_virt; 395fe56b9e6SYuval Mintz 396fe56b9e6SYuval Mintz for (i = 0; i < p_spq->chain.capacity; i++) { 397fe56b9e6SYuval Mintz p_virt->elem.data_ptr.hi = DMA_HI_LE(p_phys); 398fe56b9e6SYuval Mintz p_virt->elem.data_ptr.lo = DMA_LO_LE(p_phys); 399fe56b9e6SYuval Mintz 400fe56b9e6SYuval Mintz list_add_tail(&p_virt->list, &p_spq->free_pool); 401fe56b9e6SYuval Mintz 402fe56b9e6SYuval Mintz p_virt++; 403fe56b9e6SYuval Mintz p_phys += sizeof(struct qed_spq_entry); 404fe56b9e6SYuval Mintz } 405fe56b9e6SYuval Mintz 406fe56b9e6SYuval Mintz /* Statistics */ 407fe56b9e6SYuval Mintz p_spq->normal_count = 0; 408fe56b9e6SYuval Mintz p_spq->comp_count = 0; 409fe56b9e6SYuval Mintz p_spq->comp_sent_count = 0; 410fe56b9e6SYuval Mintz p_spq->unlimited_pending_count = 0; 411fe56b9e6SYuval Mintz p_spq->echo_idx = 0; 412fe56b9e6SYuval Mintz 413fe56b9e6SYuval Mintz /* SPQ cid, cannot fail */ 414fe56b9e6SYuval Mintz qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_CORE, &p_spq->cid); 415fe56b9e6SYuval Mintz qed_spq_hw_initialize(p_hwfn, p_spq); 416fe56b9e6SYuval Mintz 417fe56b9e6SYuval Mintz /* reset the chain itself */ 418fe56b9e6SYuval Mintz qed_chain_reset(&p_spq->chain); 419fe56b9e6SYuval Mintz } 420fe56b9e6SYuval Mintz 421fe56b9e6SYuval Mintz int qed_spq_alloc(struct qed_hwfn *p_hwfn) 422fe56b9e6SYuval Mintz { 423fe56b9e6SYuval Mintz struct qed_spq *p_spq = NULL; 424fe56b9e6SYuval Mintz dma_addr_t p_phys = 0; 425fe56b9e6SYuval Mintz struct qed_spq_entry *p_virt = NULL; 426fe56b9e6SYuval Mintz 427fe56b9e6SYuval Mintz /* SPQ struct */ 428fe56b9e6SYuval Mintz p_spq = 429fe56b9e6SYuval Mintz kzalloc(sizeof(struct qed_spq), GFP_ATOMIC); 430fe56b9e6SYuval Mintz if (!p_spq) { 431fe56b9e6SYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate `struct qed_spq'\n"); 432fe56b9e6SYuval Mintz return -ENOMEM; 433fe56b9e6SYuval Mintz } 434fe56b9e6SYuval Mintz 435fe56b9e6SYuval Mintz /* SPQ ring */ 436fe56b9e6SYuval Mintz if (qed_chain_alloc(p_hwfn->cdev, 437fe56b9e6SYuval Mintz QED_CHAIN_USE_TO_PRODUCE, 438fe56b9e6SYuval Mintz QED_CHAIN_MODE_SINGLE, 439fe56b9e6SYuval Mintz 0, /* N/A when the mode is SINGLE */ 440fe56b9e6SYuval Mintz sizeof(struct slow_path_element), 441fe56b9e6SYuval Mintz &p_spq->chain)) { 442fe56b9e6SYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate spq chain\n"); 443fe56b9e6SYuval Mintz goto spq_allocate_fail; 444fe56b9e6SYuval Mintz } 445fe56b9e6SYuval Mintz 446fe56b9e6SYuval Mintz /* allocate and fill the SPQ elements (incl. ramrod data list) */ 447fe56b9e6SYuval Mintz p_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, 448fe56b9e6SYuval Mintz p_spq->chain.capacity * 449fe56b9e6SYuval Mintz sizeof(struct qed_spq_entry), 450fe56b9e6SYuval Mintz &p_phys, 451fe56b9e6SYuval Mintz GFP_KERNEL); 452fe56b9e6SYuval Mintz 453fe56b9e6SYuval Mintz if (!p_virt) 454fe56b9e6SYuval Mintz goto spq_allocate_fail; 455fe56b9e6SYuval Mintz 456fe56b9e6SYuval Mintz p_spq->p_virt = p_virt; 457fe56b9e6SYuval Mintz p_spq->p_phys = p_phys; 458fe56b9e6SYuval Mintz p_hwfn->p_spq = p_spq; 459fe56b9e6SYuval Mintz 460fe56b9e6SYuval Mintz return 0; 461fe56b9e6SYuval Mintz 462fe56b9e6SYuval Mintz spq_allocate_fail: 463fe56b9e6SYuval Mintz qed_chain_free(p_hwfn->cdev, &p_spq->chain); 464fe56b9e6SYuval Mintz kfree(p_spq); 465fe56b9e6SYuval Mintz return -ENOMEM; 466fe56b9e6SYuval Mintz } 467fe56b9e6SYuval Mintz 468fe56b9e6SYuval Mintz void qed_spq_free(struct qed_hwfn *p_hwfn) 469fe56b9e6SYuval Mintz { 470fe56b9e6SYuval Mintz struct qed_spq *p_spq = p_hwfn->p_spq; 471fe56b9e6SYuval Mintz 472fe56b9e6SYuval Mintz if (!p_spq) 473fe56b9e6SYuval Mintz return; 474fe56b9e6SYuval Mintz 475fe56b9e6SYuval Mintz if (p_spq->p_virt) 476fe56b9e6SYuval Mintz dma_free_coherent(&p_hwfn->cdev->pdev->dev, 477fe56b9e6SYuval Mintz p_spq->chain.capacity * 478fe56b9e6SYuval Mintz sizeof(struct qed_spq_entry), 479fe56b9e6SYuval Mintz p_spq->p_virt, 480fe56b9e6SYuval Mintz p_spq->p_phys); 481fe56b9e6SYuval Mintz 482fe56b9e6SYuval Mintz qed_chain_free(p_hwfn->cdev, &p_spq->chain); 483fe56b9e6SYuval Mintz ; 484fe56b9e6SYuval Mintz kfree(p_spq); 485fe56b9e6SYuval Mintz } 486fe56b9e6SYuval Mintz 487fe56b9e6SYuval Mintz int 488fe56b9e6SYuval Mintz qed_spq_get_entry(struct qed_hwfn *p_hwfn, 489fe56b9e6SYuval Mintz struct qed_spq_entry **pp_ent) 490fe56b9e6SYuval Mintz { 491fe56b9e6SYuval Mintz struct qed_spq *p_spq = p_hwfn->p_spq; 492fe56b9e6SYuval Mintz struct qed_spq_entry *p_ent = NULL; 493fe56b9e6SYuval Mintz int rc = 0; 494fe56b9e6SYuval Mintz 495fe56b9e6SYuval Mintz spin_lock_bh(&p_spq->lock); 496fe56b9e6SYuval Mintz 497fe56b9e6SYuval Mintz if (list_empty(&p_spq->free_pool)) { 498fe56b9e6SYuval Mintz p_ent = kzalloc(sizeof(*p_ent), GFP_ATOMIC); 499fe56b9e6SYuval Mintz if (!p_ent) { 500fe56b9e6SYuval Mintz rc = -ENOMEM; 501fe56b9e6SYuval Mintz goto out_unlock; 502fe56b9e6SYuval Mintz } 503fe56b9e6SYuval Mintz p_ent->queue = &p_spq->unlimited_pending; 504fe56b9e6SYuval Mintz } else { 505fe56b9e6SYuval Mintz p_ent = list_first_entry(&p_spq->free_pool, 506fe56b9e6SYuval Mintz struct qed_spq_entry, 507fe56b9e6SYuval Mintz list); 508fe56b9e6SYuval Mintz list_del(&p_ent->list); 509fe56b9e6SYuval Mintz p_ent->queue = &p_spq->pending; 510fe56b9e6SYuval Mintz } 511fe56b9e6SYuval Mintz 512fe56b9e6SYuval Mintz *pp_ent = p_ent; 513fe56b9e6SYuval Mintz 514fe56b9e6SYuval Mintz out_unlock: 515fe56b9e6SYuval Mintz spin_unlock_bh(&p_spq->lock); 516fe56b9e6SYuval Mintz return rc; 517fe56b9e6SYuval Mintz } 518fe56b9e6SYuval Mintz 519fe56b9e6SYuval Mintz /* Locked variant; Should be called while the SPQ lock is taken */ 520fe56b9e6SYuval Mintz static void __qed_spq_return_entry(struct qed_hwfn *p_hwfn, 521fe56b9e6SYuval Mintz struct qed_spq_entry *p_ent) 522fe56b9e6SYuval Mintz { 523fe56b9e6SYuval Mintz list_add_tail(&p_ent->list, &p_hwfn->p_spq->free_pool); 524fe56b9e6SYuval Mintz } 525fe56b9e6SYuval Mintz 526fe56b9e6SYuval Mintz void qed_spq_return_entry(struct qed_hwfn *p_hwfn, 527fe56b9e6SYuval Mintz struct qed_spq_entry *p_ent) 528fe56b9e6SYuval Mintz { 529fe56b9e6SYuval Mintz spin_lock_bh(&p_hwfn->p_spq->lock); 530fe56b9e6SYuval Mintz __qed_spq_return_entry(p_hwfn, p_ent); 531fe56b9e6SYuval Mintz spin_unlock_bh(&p_hwfn->p_spq->lock); 532fe56b9e6SYuval Mintz } 533fe56b9e6SYuval Mintz 534fe56b9e6SYuval Mintz /** 535fe56b9e6SYuval Mintz * @brief qed_spq_add_entry - adds a new entry to the pending 536fe56b9e6SYuval Mintz * list. Should be used while lock is being held. 537fe56b9e6SYuval Mintz * 538fe56b9e6SYuval Mintz * Addes an entry to the pending list is there is room (en empty 539fe56b9e6SYuval Mintz * element is available in the free_pool), or else places the 540fe56b9e6SYuval Mintz * entry in the unlimited_pending pool. 541fe56b9e6SYuval Mintz * 542fe56b9e6SYuval Mintz * @param p_hwfn 543fe56b9e6SYuval Mintz * @param p_ent 544fe56b9e6SYuval Mintz * @param priority 545fe56b9e6SYuval Mintz * 546fe56b9e6SYuval Mintz * @return int 547fe56b9e6SYuval Mintz */ 548fe56b9e6SYuval Mintz static int 549fe56b9e6SYuval Mintz qed_spq_add_entry(struct qed_hwfn *p_hwfn, 550fe56b9e6SYuval Mintz struct qed_spq_entry *p_ent, 551fe56b9e6SYuval Mintz enum spq_priority priority) 552fe56b9e6SYuval Mintz { 553fe56b9e6SYuval Mintz struct qed_spq *p_spq = p_hwfn->p_spq; 554fe56b9e6SYuval Mintz 555fe56b9e6SYuval Mintz if (p_ent->queue == &p_spq->unlimited_pending) { 556fe56b9e6SYuval Mintz struct qed_spq_entry *p_en2; 557fe56b9e6SYuval Mintz 558fe56b9e6SYuval Mintz if (list_empty(&p_spq->free_pool)) { 559fe56b9e6SYuval Mintz list_add_tail(&p_ent->list, &p_spq->unlimited_pending); 560fe56b9e6SYuval Mintz p_spq->unlimited_pending_count++; 561fe56b9e6SYuval Mintz 562fe56b9e6SYuval Mintz return 0; 563fe56b9e6SYuval Mintz } 564fe56b9e6SYuval Mintz 565fe56b9e6SYuval Mintz p_en2 = list_first_entry(&p_spq->free_pool, 566fe56b9e6SYuval Mintz struct qed_spq_entry, 567fe56b9e6SYuval Mintz list); 568fe56b9e6SYuval Mintz list_del(&p_en2->list); 569fe56b9e6SYuval Mintz 570fe56b9e6SYuval Mintz /* Strcut assignment */ 571fe56b9e6SYuval Mintz *p_en2 = *p_ent; 572fe56b9e6SYuval Mintz 573fe56b9e6SYuval Mintz kfree(p_ent); 574fe56b9e6SYuval Mintz 575fe56b9e6SYuval Mintz p_ent = p_en2; 576fe56b9e6SYuval Mintz } 577fe56b9e6SYuval Mintz 578fe56b9e6SYuval Mintz /* entry is to be placed in 'pending' queue */ 579fe56b9e6SYuval Mintz switch (priority) { 580fe56b9e6SYuval Mintz case QED_SPQ_PRIORITY_NORMAL: 581fe56b9e6SYuval Mintz list_add_tail(&p_ent->list, &p_spq->pending); 582fe56b9e6SYuval Mintz p_spq->normal_count++; 583fe56b9e6SYuval Mintz break; 584fe56b9e6SYuval Mintz case QED_SPQ_PRIORITY_HIGH: 585fe56b9e6SYuval Mintz list_add(&p_ent->list, &p_spq->pending); 586fe56b9e6SYuval Mintz p_spq->high_count++; 587fe56b9e6SYuval Mintz break; 588fe56b9e6SYuval Mintz default: 589fe56b9e6SYuval Mintz return -EINVAL; 590fe56b9e6SYuval Mintz } 591fe56b9e6SYuval Mintz 592fe56b9e6SYuval Mintz return 0; 593fe56b9e6SYuval Mintz } 594fe56b9e6SYuval Mintz 595fe56b9e6SYuval Mintz /*************************************************************************** 596fe56b9e6SYuval Mintz * Accessor 597fe56b9e6SYuval Mintz ***************************************************************************/ 598fe56b9e6SYuval Mintz u32 qed_spq_get_cid(struct qed_hwfn *p_hwfn) 599fe56b9e6SYuval Mintz { 600fe56b9e6SYuval Mintz if (!p_hwfn->p_spq) 601fe56b9e6SYuval Mintz return 0xffffffff; /* illegal */ 602fe56b9e6SYuval Mintz return p_hwfn->p_spq->cid; 603fe56b9e6SYuval Mintz } 604fe56b9e6SYuval Mintz 605fe56b9e6SYuval Mintz /*************************************************************************** 606fe56b9e6SYuval Mintz * Posting new Ramrods 607fe56b9e6SYuval Mintz ***************************************************************************/ 608fe56b9e6SYuval Mintz static int qed_spq_post_list(struct qed_hwfn *p_hwfn, 609fe56b9e6SYuval Mintz struct list_head *head, 610fe56b9e6SYuval Mintz u32 keep_reserve) 611fe56b9e6SYuval Mintz { 612fe56b9e6SYuval Mintz struct qed_spq *p_spq = p_hwfn->p_spq; 613fe56b9e6SYuval Mintz int rc; 614fe56b9e6SYuval Mintz 615fe56b9e6SYuval Mintz while (qed_chain_get_elem_left(&p_spq->chain) > keep_reserve && 616fe56b9e6SYuval Mintz !list_empty(head)) { 617fe56b9e6SYuval Mintz struct qed_spq_entry *p_ent = 618fe56b9e6SYuval Mintz list_first_entry(head, struct qed_spq_entry, list); 619fe56b9e6SYuval Mintz list_del(&p_ent->list); 620fe56b9e6SYuval Mintz list_add_tail(&p_ent->list, &p_spq->completion_pending); 621fe56b9e6SYuval Mintz p_spq->comp_sent_count++; 622fe56b9e6SYuval Mintz 623fe56b9e6SYuval Mintz rc = qed_spq_hw_post(p_hwfn, p_spq, p_ent); 624fe56b9e6SYuval Mintz if (rc) { 625fe56b9e6SYuval Mintz list_del(&p_ent->list); 626fe56b9e6SYuval Mintz __qed_spq_return_entry(p_hwfn, p_ent); 627fe56b9e6SYuval Mintz return rc; 628fe56b9e6SYuval Mintz } 629fe56b9e6SYuval Mintz } 630fe56b9e6SYuval Mintz 631fe56b9e6SYuval Mintz return 0; 632fe56b9e6SYuval Mintz } 633fe56b9e6SYuval Mintz 634fe56b9e6SYuval Mintz static int qed_spq_pend_post(struct qed_hwfn *p_hwfn) 635fe56b9e6SYuval Mintz { 636fe56b9e6SYuval Mintz struct qed_spq *p_spq = p_hwfn->p_spq; 637fe56b9e6SYuval Mintz struct qed_spq_entry *p_ent = NULL; 638fe56b9e6SYuval Mintz 639fe56b9e6SYuval Mintz while (!list_empty(&p_spq->free_pool)) { 640fe56b9e6SYuval Mintz if (list_empty(&p_spq->unlimited_pending)) 641fe56b9e6SYuval Mintz break; 642fe56b9e6SYuval Mintz 643fe56b9e6SYuval Mintz p_ent = list_first_entry(&p_spq->unlimited_pending, 644fe56b9e6SYuval Mintz struct qed_spq_entry, 645fe56b9e6SYuval Mintz list); 646fe56b9e6SYuval Mintz if (!p_ent) 647fe56b9e6SYuval Mintz return -EINVAL; 648fe56b9e6SYuval Mintz 649fe56b9e6SYuval Mintz list_del(&p_ent->list); 650fe56b9e6SYuval Mintz 651fe56b9e6SYuval Mintz qed_spq_add_entry(p_hwfn, p_ent, p_ent->priority); 652fe56b9e6SYuval Mintz } 653fe56b9e6SYuval Mintz 654fe56b9e6SYuval Mintz return qed_spq_post_list(p_hwfn, &p_spq->pending, 655fe56b9e6SYuval Mintz SPQ_HIGH_PRI_RESERVE_DEFAULT); 656fe56b9e6SYuval Mintz } 657fe56b9e6SYuval Mintz 658fe56b9e6SYuval Mintz int qed_spq_post(struct qed_hwfn *p_hwfn, 659fe56b9e6SYuval Mintz struct qed_spq_entry *p_ent, 660fe56b9e6SYuval Mintz u8 *fw_return_code) 661fe56b9e6SYuval Mintz { 662fe56b9e6SYuval Mintz int rc = 0; 663fe56b9e6SYuval Mintz struct qed_spq *p_spq = p_hwfn ? p_hwfn->p_spq : NULL; 664fe56b9e6SYuval Mintz bool b_ret_ent = true; 665fe56b9e6SYuval Mintz 666fe56b9e6SYuval Mintz if (!p_hwfn) 667fe56b9e6SYuval Mintz return -EINVAL; 668fe56b9e6SYuval Mintz 669fe56b9e6SYuval Mintz if (!p_ent) { 670fe56b9e6SYuval Mintz DP_NOTICE(p_hwfn, "Got a NULL pointer\n"); 671fe56b9e6SYuval Mintz return -EINVAL; 672fe56b9e6SYuval Mintz } 673fe56b9e6SYuval Mintz 674fe56b9e6SYuval Mintz /* Complete the entry */ 675fe56b9e6SYuval Mintz rc = qed_spq_fill_entry(p_hwfn, p_ent); 676fe56b9e6SYuval Mintz 677fe56b9e6SYuval Mintz spin_lock_bh(&p_spq->lock); 678fe56b9e6SYuval Mintz 679fe56b9e6SYuval Mintz /* Check return value after LOCK is taken for cleaner error flow */ 680fe56b9e6SYuval Mintz if (rc) 681fe56b9e6SYuval Mintz goto spq_post_fail; 682fe56b9e6SYuval Mintz 683fe56b9e6SYuval Mintz /* Add the request to the pending queue */ 684fe56b9e6SYuval Mintz rc = qed_spq_add_entry(p_hwfn, p_ent, p_ent->priority); 685fe56b9e6SYuval Mintz if (rc) 686fe56b9e6SYuval Mintz goto spq_post_fail; 687fe56b9e6SYuval Mintz 688fe56b9e6SYuval Mintz rc = qed_spq_pend_post(p_hwfn); 689fe56b9e6SYuval Mintz if (rc) { 690fe56b9e6SYuval Mintz /* Since it's possible that pending failed for a different 691fe56b9e6SYuval Mintz * entry [although unlikely], the failed entry was already 692fe56b9e6SYuval Mintz * dealt with; No need to return it here. 693fe56b9e6SYuval Mintz */ 694fe56b9e6SYuval Mintz b_ret_ent = false; 695fe56b9e6SYuval Mintz goto spq_post_fail; 696fe56b9e6SYuval Mintz } 697fe56b9e6SYuval Mintz 698fe56b9e6SYuval Mintz spin_unlock_bh(&p_spq->lock); 699fe56b9e6SYuval Mintz 700fe56b9e6SYuval Mintz if (p_ent->comp_mode == QED_SPQ_MODE_EBLOCK) { 701fe56b9e6SYuval Mintz /* For entries in QED BLOCK mode, the completion code cannot 702fe56b9e6SYuval Mintz * perform the necessary cleanup - if it did, we couldn't 703fe56b9e6SYuval Mintz * access p_ent here to see whether it's successful or not. 704fe56b9e6SYuval Mintz * Thus, after gaining the answer perform the cleanup here. 705fe56b9e6SYuval Mintz */ 706fe56b9e6SYuval Mintz rc = qed_spq_block(p_hwfn, p_ent, fw_return_code); 707fe56b9e6SYuval Mintz if (rc) 708fe56b9e6SYuval Mintz goto spq_post_fail2; 709fe56b9e6SYuval Mintz 710fe56b9e6SYuval Mintz /* return to pool */ 711fe56b9e6SYuval Mintz qed_spq_return_entry(p_hwfn, p_ent); 712fe56b9e6SYuval Mintz } 713fe56b9e6SYuval Mintz return rc; 714fe56b9e6SYuval Mintz 715fe56b9e6SYuval Mintz spq_post_fail2: 716fe56b9e6SYuval Mintz spin_lock_bh(&p_spq->lock); 717fe56b9e6SYuval Mintz list_del(&p_ent->list); 718fe56b9e6SYuval Mintz qed_chain_return_produced(&p_spq->chain); 719fe56b9e6SYuval Mintz 720fe56b9e6SYuval Mintz spq_post_fail: 721fe56b9e6SYuval Mintz /* return to the free pool */ 722fe56b9e6SYuval Mintz if (b_ret_ent) 723fe56b9e6SYuval Mintz __qed_spq_return_entry(p_hwfn, p_ent); 724fe56b9e6SYuval Mintz spin_unlock_bh(&p_spq->lock); 725fe56b9e6SYuval Mintz 726fe56b9e6SYuval Mintz return rc; 727fe56b9e6SYuval Mintz } 728fe56b9e6SYuval Mintz 729fe56b9e6SYuval Mintz int qed_spq_completion(struct qed_hwfn *p_hwfn, 730fe56b9e6SYuval Mintz __le16 echo, 731fe56b9e6SYuval Mintz u8 fw_return_code, 732fe56b9e6SYuval Mintz union event_ring_data *p_data) 733fe56b9e6SYuval Mintz { 734fe56b9e6SYuval Mintz struct qed_spq *p_spq; 735fe56b9e6SYuval Mintz struct qed_spq_entry *p_ent = NULL; 736fe56b9e6SYuval Mintz struct qed_spq_entry *tmp; 737fe56b9e6SYuval Mintz struct qed_spq_entry *found = NULL; 738fe56b9e6SYuval Mintz int rc; 739fe56b9e6SYuval Mintz 740fe56b9e6SYuval Mintz if (!p_hwfn) 741fe56b9e6SYuval Mintz return -EINVAL; 742fe56b9e6SYuval Mintz 743fe56b9e6SYuval Mintz p_spq = p_hwfn->p_spq; 744fe56b9e6SYuval Mintz if (!p_spq) 745fe56b9e6SYuval Mintz return -EINVAL; 746fe56b9e6SYuval Mintz 747fe56b9e6SYuval Mintz spin_lock_bh(&p_spq->lock); 748fe56b9e6SYuval Mintz list_for_each_entry_safe(p_ent, tmp, &p_spq->completion_pending, 749fe56b9e6SYuval Mintz list) { 750fe56b9e6SYuval Mintz if (p_ent->elem.hdr.echo == echo) { 751fe56b9e6SYuval Mintz list_del(&p_ent->list); 752fe56b9e6SYuval Mintz 753fe56b9e6SYuval Mintz qed_chain_return_produced(&p_spq->chain); 754fe56b9e6SYuval Mintz p_spq->comp_count++; 755fe56b9e6SYuval Mintz found = p_ent; 756fe56b9e6SYuval Mintz break; 757fe56b9e6SYuval Mintz } 758fe56b9e6SYuval Mintz } 759fe56b9e6SYuval Mintz 760fe56b9e6SYuval Mintz /* Release lock before callback, as callback may post 761fe56b9e6SYuval Mintz * an additional ramrod. 762fe56b9e6SYuval Mintz */ 763fe56b9e6SYuval Mintz spin_unlock_bh(&p_spq->lock); 764fe56b9e6SYuval Mintz 765fe56b9e6SYuval Mintz if (!found) { 766fe56b9e6SYuval Mintz DP_NOTICE(p_hwfn, 767fe56b9e6SYuval Mintz "Failed to find an entry this EQE completes\n"); 768fe56b9e6SYuval Mintz return -EEXIST; 769fe56b9e6SYuval Mintz } 770fe56b9e6SYuval Mintz 771fe56b9e6SYuval Mintz DP_VERBOSE(p_hwfn, QED_MSG_SPQ, "Complete: func %p cookie %p)\n", 772fe56b9e6SYuval Mintz p_ent->comp_cb.function, p_ent->comp_cb.cookie); 773fe56b9e6SYuval Mintz if (found->comp_cb.function) 774fe56b9e6SYuval Mintz found->comp_cb.function(p_hwfn, found->comp_cb.cookie, p_data, 775fe56b9e6SYuval Mintz fw_return_code); 776fe56b9e6SYuval Mintz 777fe56b9e6SYuval Mintz if (found->comp_mode != QED_SPQ_MODE_EBLOCK) 778fe56b9e6SYuval Mintz /* EBLOCK is responsible for freeing its own entry */ 779fe56b9e6SYuval Mintz qed_spq_return_entry(p_hwfn, found); 780fe56b9e6SYuval Mintz 781fe56b9e6SYuval Mintz /* Attempt to post pending requests */ 782fe56b9e6SYuval Mintz spin_lock_bh(&p_spq->lock); 783fe56b9e6SYuval Mintz rc = qed_spq_pend_post(p_hwfn); 784fe56b9e6SYuval Mintz spin_unlock_bh(&p_spq->lock); 785fe56b9e6SYuval Mintz 786fe56b9e6SYuval Mintz return rc; 787fe56b9e6SYuval Mintz } 788fe56b9e6SYuval Mintz 789fe56b9e6SYuval Mintz struct qed_consq *qed_consq_alloc(struct qed_hwfn *p_hwfn) 790fe56b9e6SYuval Mintz { 791fe56b9e6SYuval Mintz struct qed_consq *p_consq; 792fe56b9e6SYuval Mintz 793fe56b9e6SYuval Mintz /* Allocate ConsQ struct */ 794fe56b9e6SYuval Mintz p_consq = kzalloc(sizeof(*p_consq), GFP_ATOMIC); 795fe56b9e6SYuval Mintz if (!p_consq) { 796fe56b9e6SYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate `struct qed_consq'\n"); 797fe56b9e6SYuval Mintz return NULL; 798fe56b9e6SYuval Mintz } 799fe56b9e6SYuval Mintz 800fe56b9e6SYuval Mintz /* Allocate and initialize EQ chain*/ 801fe56b9e6SYuval Mintz if (qed_chain_alloc(p_hwfn->cdev, 802fe56b9e6SYuval Mintz QED_CHAIN_USE_TO_PRODUCE, 803fe56b9e6SYuval Mintz QED_CHAIN_MODE_PBL, 804fe56b9e6SYuval Mintz QED_CHAIN_PAGE_SIZE / 0x80, 805fe56b9e6SYuval Mintz 0x80, 806fe56b9e6SYuval Mintz &p_consq->chain)) { 807fe56b9e6SYuval Mintz DP_NOTICE(p_hwfn, "Failed to allocate consq chain"); 808fe56b9e6SYuval Mintz goto consq_allocate_fail; 809fe56b9e6SYuval Mintz } 810fe56b9e6SYuval Mintz 811fe56b9e6SYuval Mintz return p_consq; 812fe56b9e6SYuval Mintz 813fe56b9e6SYuval Mintz consq_allocate_fail: 814fe56b9e6SYuval Mintz qed_consq_free(p_hwfn, p_consq); 815fe56b9e6SYuval Mintz return NULL; 816fe56b9e6SYuval Mintz } 817fe56b9e6SYuval Mintz 818fe56b9e6SYuval Mintz void qed_consq_setup(struct qed_hwfn *p_hwfn, 819fe56b9e6SYuval Mintz struct qed_consq *p_consq) 820fe56b9e6SYuval Mintz { 821fe56b9e6SYuval Mintz qed_chain_reset(&p_consq->chain); 822fe56b9e6SYuval Mintz } 823fe56b9e6SYuval Mintz 824fe56b9e6SYuval Mintz void qed_consq_free(struct qed_hwfn *p_hwfn, 825fe56b9e6SYuval Mintz struct qed_consq *p_consq) 826fe56b9e6SYuval Mintz { 827fe56b9e6SYuval Mintz if (!p_consq) 828fe56b9e6SYuval Mintz return; 829fe56b9e6SYuval Mintz qed_chain_free(p_hwfn->cdev, &p_consq->chain); 830fe56b9e6SYuval Mintz kfree(p_consq); 831fe56b9e6SYuval Mintz } 832