/* * Copyright (c) 2017-2018 Cavium, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * File : ecore_spq.c */ #include #include "bcm_osal.h" #include "reg_addr.h" #include "ecore_gtt_reg_addr.h" #include "ecore_hsi_common.h" #include "ecore.h" #include "ecore_sp_api.h" #include "ecore_spq.h" #include "ecore_iro.h" #include "ecore_init_fw_funcs.h" #include "ecore_cxt.h" #include "ecore_int.h" #include "ecore_dev_api.h" #include "ecore_mcp.h" #ifdef CONFIG_ECORE_RDMA #include "ecore_rdma.h" #endif #include "ecore_hw.h" #include "ecore_sriov.h" #ifdef CONFIG_ECORE_ISCSI #include "ecore_iscsi.h" #include "ecore_ooo.h" #endif #ifdef _NTDDK_ #pragma warning(push) #pragma warning(disable : 28167) #pragma warning(disable : 28123) #endif /*************************************************************************** * Structures & Definitions ***************************************************************************/ #define SPQ_HIGH_PRI_RESERVE_DEFAULT (1) #define SPQ_BLOCK_DELAY_MAX_ITER (10) #define SPQ_BLOCK_DELAY_US (10) #define SPQ_BLOCK_SLEEP_MAX_ITER (200) #define SPQ_BLOCK_SLEEP_MS (5) #ifndef REMOVE_DBG /*************************************************************************** * Debug [iSCSI] tool ***************************************************************************/ static void ecore_iscsi_eq_dump(struct ecore_hwfn *p_hwfn, struct event_ring_entry *p_eqe) { if (p_eqe->opcode >= MAX_ISCSI_EQE_OPCODE) { DP_NOTICE(p_hwfn, false, "Unknown iSCSI EQ: %x\n", p_eqe->opcode); } switch (p_eqe->opcode) { case ISCSI_EVENT_TYPE_INIT_FUNC: case ISCSI_EVENT_TYPE_DESTROY_FUNC: /* NOPE */ break; case ISCSI_EVENT_TYPE_OFFLOAD_CONN: case ISCSI_EVENT_TYPE_TERMINATE_CONN: DP_VERBOSE(p_hwfn, ECORE_MSG_STORAGE, "iSCSI EQE: Port %x, Op %x, echo %x, FWret %x, CID %x, ConnID %x, ERR %x\n", p_hwfn->port_id, p_eqe->opcode, OSAL_LE16_TO_CPU(p_eqe->echo), p_eqe->fw_return_code, OSAL_LE16_TO_CPU(p_eqe->data.iscsi_info.icid), OSAL_LE16_TO_CPU(p_eqe->data.iscsi_info.conn_id), p_eqe->data.iscsi_info.error_code); break; case ISCSI_EVENT_TYPE_UPDATE_CONN: case ISCSI_EVENT_TYPE_CLEAR_SQ: case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE: case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE: case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD: case ISCSI_EVENT_TYPE_ASYN_CLOSE_RCVD: case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD: case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME: case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT: case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT: case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2: case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR: case ISCSI_EVENT_TYPE_TCP_CONN_ERROR: default: /* NOPE */ break; } } #endif /*************************************************************************** * Blocking Imp. (BLOCK/EBLOCK mode) ***************************************************************************/ static void ecore_spq_blocking_cb(struct ecore_hwfn *p_hwfn, void *cookie, union event_ring_data OSAL_UNUSED *data, u8 fw_return_code) { struct ecore_spq_comp_done *comp_done; comp_done = (struct ecore_spq_comp_done *)cookie; comp_done->done = 0x1; comp_done->fw_return_code = fw_return_code; /* make update visible to waiting thread */ OSAL_SMP_WMB(p_hwfn->p_dev); } static enum _ecore_status_t __ecore_spq_block(struct ecore_hwfn *p_hwfn, struct ecore_spq_entry *p_ent, u8 *p_fw_ret, bool sleep_between_iter) { struct ecore_spq_comp_done *comp_done; u32 iter_cnt; comp_done = (struct ecore_spq_comp_done *)p_ent->comp_cb.cookie; iter_cnt = sleep_between_iter ? SPQ_BLOCK_SLEEP_MAX_ITER : SPQ_BLOCK_DELAY_MAX_ITER; #ifndef ASIC_ONLY if (CHIP_REV_IS_EMUL(p_hwfn->p_dev) && sleep_between_iter) iter_cnt *= 5; #endif while (iter_cnt--) { OSAL_POLL_MODE_DPC(p_hwfn); OSAL_SMP_RMB(p_hwfn->p_dev); if (comp_done->done == 1) { if (p_fw_ret) *p_fw_ret = comp_done->fw_return_code; return ECORE_SUCCESS; } if (sleep_between_iter) { OSAL_MSLEEP(SPQ_BLOCK_SLEEP_MS); } else { OSAL_UDELAY(SPQ_BLOCK_DELAY_US); } } return ECORE_TIMEOUT; } static enum _ecore_status_t ecore_spq_block(struct ecore_hwfn *p_hwfn, struct ecore_spq_entry *p_ent, u8 *p_fw_ret, bool skip_quick_poll) { struct ecore_spq_comp_done *comp_done; struct ecore_ptt *p_ptt; enum _ecore_status_t rc; /* A relatively short polling period w/o sleeping, to allow the FW to * complete the ramrod and thus possibly to avoid the following sleeps. */ if (!skip_quick_poll) { rc = __ecore_spq_block(p_hwfn, p_ent, p_fw_ret, false); if (rc == ECORE_SUCCESS) return ECORE_SUCCESS; } /* Move to polling with a sleeping period between iterations */ rc = __ecore_spq_block(p_hwfn, p_ent, p_fw_ret, true); if (rc == ECORE_SUCCESS) return ECORE_SUCCESS; p_ptt = ecore_ptt_acquire(p_hwfn); if (!p_ptt) return ECORE_AGAIN; DP_INFO(p_hwfn, "Ramrod is stuck, requesting MCP drain\n"); rc = ecore_mcp_drain(p_hwfn, p_ptt); ecore_ptt_release(p_hwfn, p_ptt); if (rc != ECORE_SUCCESS) { DP_NOTICE(p_hwfn, true, "MCP drain failed\n"); goto err; } /* Retry after drain */ rc = __ecore_spq_block(p_hwfn, p_ent, p_fw_ret, true); if (rc == ECORE_SUCCESS) return ECORE_SUCCESS; comp_done = (struct ecore_spq_comp_done *)p_ent->comp_cb.cookie; if (comp_done->done == 1) { if (p_fw_ret) *p_fw_ret = comp_done->fw_return_code; return ECORE_SUCCESS; } err: DP_NOTICE(p_hwfn, true, "Ramrod is stuck [CID %08x cmd %02x protocol %02x echo %04x]\n", OSAL_LE32_TO_CPU(p_ent->elem.hdr.cid), p_ent->elem.hdr.cmd_id, p_ent->elem.hdr.protocol_id, OSAL_LE16_TO_CPU(p_ent->elem.hdr.echo)); ecore_hw_err_notify(p_hwfn, ECORE_HW_ERR_RAMROD_FAIL); return ECORE_BUSY; } /*************************************************************************** * SPQ entries inner API ***************************************************************************/ static enum _ecore_status_t ecore_spq_fill_entry(struct ecore_hwfn *p_hwfn, struct ecore_spq_entry *p_ent) { p_ent->flags = 0; switch (p_ent->comp_mode) { case ECORE_SPQ_MODE_EBLOCK: case ECORE_SPQ_MODE_BLOCK: p_ent->comp_cb.function = ecore_spq_blocking_cb; break; case ECORE_SPQ_MODE_CB: break; default: DP_NOTICE(p_hwfn, true, "Unknown SPQE completion mode %d\n", p_ent->comp_mode); return ECORE_INVAL; } DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ, "Ramrod header: [CID 0x%08x CMD 0x%02x protocol 0x%02x] Data pointer: [%08x:%08x] Completion Mode: %s\n", p_ent->elem.hdr.cid, p_ent->elem.hdr.cmd_id, p_ent->elem.hdr.protocol_id, p_ent->elem.data_ptr.hi, p_ent->elem.data_ptr.lo, D_TRINE(p_ent->comp_mode, ECORE_SPQ_MODE_EBLOCK, ECORE_SPQ_MODE_BLOCK, "MODE_EBLOCK", "MODE_BLOCK", "MODE_CB")); return ECORE_SUCCESS; } /*************************************************************************** * HSI access ***************************************************************************/ static void ecore_spq_hw_initialize(struct ecore_hwfn *p_hwfn, struct ecore_spq *p_spq) { struct e4_core_conn_context *p_cxt; struct ecore_cxt_info cxt_info; u16 physical_q; enum _ecore_status_t rc; cxt_info.iid = p_spq->cid; rc = ecore_cxt_get_cid_info(p_hwfn, &cxt_info); if (rc < 0) { DP_NOTICE(p_hwfn, true, "Cannot find context info for cid=%d\n", p_spq->cid); return; } p_cxt = cxt_info.p_cxt; /* @@@TBD we zero the context until we have ilt_reset implemented. */ OSAL_MEM_ZERO(p_cxt, sizeof(*p_cxt)); if (ECORE_IS_BB(p_hwfn->p_dev) || ECORE_IS_AH(p_hwfn->p_dev)) { SET_FIELD(p_cxt->xstorm_ag_context.flags10, E4_XSTORM_CORE_CONN_AG_CTX_DQ_CF_EN, 1); SET_FIELD(p_cxt->xstorm_ag_context.flags1, E4_XSTORM_CORE_CONN_AG_CTX_DQ_CF_ACTIVE, 1); /*SET_FIELD(p_cxt->xstorm_ag_context.flags10, E4_XSTORM_CORE_CONN_AG_CTX_SLOW_PATH_EN, 1);*/ SET_FIELD(p_cxt->xstorm_ag_context.flags9, E4_XSTORM_CORE_CONN_AG_CTX_CONSOLID_PROD_CF_EN, 1); } else { /* E5 */ ECORE_E5_MISSING_CODE; } /* CDU validation - FIXME currently disabled */ /* QM physical queue */ physical_q = ecore_get_cm_pq_idx(p_hwfn, PQ_FLAGS_LB); p_cxt->xstorm_ag_context.physical_q0 = OSAL_CPU_TO_LE16(physical_q); p_cxt->xstorm_st_context.spq_base_lo = DMA_LO_LE(p_spq->chain.p_phys_addr); p_cxt->xstorm_st_context.spq_base_hi = DMA_HI_LE(p_spq->chain.p_phys_addr); DMA_REGPAIR_LE(p_cxt->xstorm_st_context.consolid_base_addr, p_hwfn->p_consq->chain.p_phys_addr); } static enum _ecore_status_t ecore_spq_hw_post(struct ecore_hwfn *p_hwfn, struct ecore_spq *p_spq, struct ecore_spq_entry *p_ent) { struct ecore_chain *p_chain = &p_hwfn->p_spq->chain; struct core_db_data *p_db_data = &p_spq->db_data; u16 echo = ecore_chain_get_prod_idx(p_chain); struct slow_path_element *elem; p_ent->elem.hdr.echo = OSAL_CPU_TO_LE16(echo); elem = ecore_chain_produce(p_chain); if (!elem) { DP_NOTICE(p_hwfn, true, "Failed to produce from SPQ chain\n"); return ECORE_INVAL; } *elem = p_ent->elem; /* Struct assignment */ p_db_data->spq_prod = OSAL_CPU_TO_LE16(ecore_chain_get_prod_idx(p_chain)); /* Make sure the SPQE is updated before the doorbell */ OSAL_WMB(p_hwfn->p_dev); DOORBELL(p_hwfn, p_spq->db_addr_offset, *(u32 *)p_db_data); /* Make sure doorbell was rung */ OSAL_WMB(p_hwfn->p_dev); DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ, "Doorbelled [0x%08x, CID 0x%08x] with Flags: %02x agg_params: %02x, prod: %04x\n", p_spq->db_addr_offset, p_spq->cid, p_db_data->params, p_db_data->agg_flags, ecore_chain_get_prod_idx(p_chain)); return ECORE_SUCCESS; } /*************************************************************************** * Asynchronous events ***************************************************************************/ static enum _ecore_status_t ecore_async_event_completion(struct ecore_hwfn *p_hwfn, struct event_ring_entry *p_eqe) { ecore_spq_async_comp_cb cb; if (!p_hwfn->p_spq || (p_eqe->protocol_id >= MAX_PROTOCOL_TYPE)) { return ECORE_INVAL; } cb = p_hwfn->p_spq->async_comp_cb[p_eqe->protocol_id]; if (cb) { return cb(p_hwfn, p_eqe->opcode, p_eqe->echo, &p_eqe->data, p_eqe->fw_return_code); } else { DP_NOTICE(p_hwfn, true, "Unknown Async completion for protocol: %d\n", p_eqe->protocol_id); return ECORE_INVAL; } } enum _ecore_status_t ecore_spq_register_async_cb(struct ecore_hwfn *p_hwfn, enum protocol_type protocol_id, ecore_spq_async_comp_cb cb) { if (!p_hwfn->p_spq || (protocol_id >= MAX_PROTOCOL_TYPE)) { return ECORE_INVAL; } p_hwfn->p_spq->async_comp_cb[protocol_id] = cb; return ECORE_SUCCESS; } void ecore_spq_unregister_async_cb(struct ecore_hwfn *p_hwfn, enum protocol_type protocol_id) { if (!p_hwfn->p_spq || (protocol_id >= MAX_PROTOCOL_TYPE)) { return; } p_hwfn->p_spq->async_comp_cb[protocol_id] = OSAL_NULL; } /*************************************************************************** * EQ API ***************************************************************************/ void ecore_eq_prod_update(struct ecore_hwfn *p_hwfn, u16 prod) { u32 addr = GTT_BAR0_MAP_REG_USDM_RAM + USTORM_EQE_CONS_OFFSET(p_hwfn->rel_pf_id); REG_WR16(p_hwfn, addr, prod); /* keep prod updates ordered */ OSAL_MMIOWB(p_hwfn->p_dev); } enum _ecore_status_t ecore_eq_completion(struct ecore_hwfn *p_hwfn, void *cookie) { struct ecore_eq *p_eq = cookie; struct ecore_chain *p_chain = &p_eq->chain; enum _ecore_status_t rc = 0; /* take a snapshot of the FW consumer */ u16 fw_cons_idx = OSAL_LE16_TO_CPU(*p_eq->p_fw_cons); DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ, "fw_cons_idx %x\n", fw_cons_idx); /* Need to guarantee the fw_cons index we use points to a usuable * element (to comply with our chain), so our macros would comply */ if ((fw_cons_idx & ecore_chain_get_usable_per_page(p_chain)) == ecore_chain_get_usable_per_page(p_chain)) { fw_cons_idx += ecore_chain_get_unusable_per_page(p_chain); } /* Complete current segment of eq entries */ while (fw_cons_idx != ecore_chain_get_cons_idx(p_chain)) { struct event_ring_entry *p_eqe = ecore_chain_consume(p_chain); if (!p_eqe) { rc = ECORE_INVAL; break; } DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ, "op %x prot %x res0 %x echo %x fwret %x flags %x\n", p_eqe->opcode, /* Event Opcode */ p_eqe->protocol_id, /* Event Protocol ID */ p_eqe->reserved0, /* Reserved */ OSAL_LE16_TO_CPU(p_eqe->echo),/* Echo value from ramrod data on the host */ p_eqe->fw_return_code, /* FW return code for SP ramrods */ p_eqe->flags); #ifndef REMOVE_DBG if (p_eqe->protocol_id == PROTOCOLID_ISCSI) ecore_iscsi_eq_dump(p_hwfn, p_eqe); #endif if (GET_FIELD(p_eqe->flags, EVENT_RING_ENTRY_ASYNC)) { if (ecore_async_event_completion(p_hwfn, p_eqe)) rc = ECORE_INVAL; } else if (ecore_spq_completion(p_hwfn, p_eqe->echo, p_eqe->fw_return_code, &p_eqe->data)) { rc = ECORE_INVAL; } ecore_chain_recycle_consumed(p_chain); } ecore_eq_prod_update(p_hwfn, ecore_chain_get_prod_idx(p_chain)); /* Attempt to post pending requests */ OSAL_SPIN_LOCK(&p_hwfn->p_spq->lock); rc = ecore_spq_pend_post(p_hwfn); OSAL_SPIN_UNLOCK(&p_hwfn->p_spq->lock); return rc; } enum _ecore_status_t ecore_eq_alloc(struct ecore_hwfn *p_hwfn, u16 num_elem) { struct ecore_eq *p_eq; /* Allocate EQ struct */ p_eq = OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(*p_eq)); if (!p_eq) { DP_NOTICE(p_hwfn, false, "Failed to allocate `struct ecore_eq'\n"); return ECORE_NOMEM; } /* Allocate and initialize EQ chain*/ if (ecore_chain_alloc(p_hwfn->p_dev, ECORE_CHAIN_USE_TO_PRODUCE, ECORE_CHAIN_MODE_PBL, ECORE_CHAIN_CNT_TYPE_U16, num_elem, sizeof(union event_ring_element), &p_eq->chain, OSAL_NULL) != ECORE_SUCCESS) { DP_NOTICE(p_hwfn, false, "Failed to allocate eq chain\n"); goto eq_allocate_fail; } /* register EQ completion on the SP SB */ ecore_int_register_cb(p_hwfn, ecore_eq_completion, p_eq, &p_eq->eq_sb_index, &p_eq->p_fw_cons); p_hwfn->p_eq = p_eq; return ECORE_SUCCESS; eq_allocate_fail: OSAL_FREE(p_hwfn->p_dev, p_eq); return ECORE_NOMEM; } void ecore_eq_setup(struct ecore_hwfn *p_hwfn) { ecore_chain_reset(&p_hwfn->p_eq->chain); } void ecore_eq_free(struct ecore_hwfn *p_hwfn) { if (!p_hwfn->p_eq) return; ecore_chain_free(p_hwfn->p_dev, &p_hwfn->p_eq->chain); OSAL_FREE(p_hwfn->p_dev, p_hwfn->p_eq); p_hwfn->p_eq = OSAL_NULL; } /*************************************************************************** * CQE API - manipulate EQ functionallity ***************************************************************************/ static enum _ecore_status_t ecore_cqe_completion(struct ecore_hwfn *p_hwfn, struct eth_slow_path_rx_cqe *cqe, enum protocol_type protocol) { if (IS_VF(p_hwfn->p_dev)) return OSAL_VF_CQE_COMPLETION(p_hwfn, cqe, protocol); /* @@@tmp - it's possible we'll eventually want to handle some * actual commands that can arrive here, but for now this is only * used to complete the ramrod using the echo value on the cqe */ return ecore_spq_completion(p_hwfn, cqe->echo, 0, OSAL_NULL); } enum _ecore_status_t ecore_eth_cqe_completion(struct ecore_hwfn *p_hwfn, struct eth_slow_path_rx_cqe *cqe) { enum _ecore_status_t rc; rc = ecore_cqe_completion(p_hwfn, cqe, PROTOCOLID_ETH); if (rc) { DP_NOTICE(p_hwfn, true, "Failed to handle RXQ CQE [cmd 0x%02x]\n", cqe->ramrod_cmd_id); } return rc; } /*************************************************************************** * Slow hwfn Queue (spq) ***************************************************************************/ void ecore_spq_setup(struct ecore_hwfn *p_hwfn) { struct ecore_spq *p_spq = p_hwfn->p_spq; struct ecore_spq_entry *p_virt = OSAL_NULL; struct core_db_data *p_db_data; void OSAL_IOMEM *db_addr; dma_addr_t p_phys = 0; u32 i, capacity; enum _ecore_status_t rc; OSAL_LIST_INIT(&p_spq->pending); OSAL_LIST_INIT(&p_spq->completion_pending); OSAL_LIST_INIT(&p_spq->free_pool); OSAL_LIST_INIT(&p_spq->unlimited_pending); OSAL_SPIN_LOCK_INIT(&p_spq->lock); /* SPQ empty pool */ p_phys = p_spq->p_phys + OFFSETOF(struct ecore_spq_entry, ramrod); p_virt = p_spq->p_virt; capacity = ecore_chain_get_capacity(&p_spq->chain); for (i = 0; i < capacity; i++) { DMA_REGPAIR_LE(p_virt->elem.data_ptr, p_phys); OSAL_LIST_PUSH_TAIL(&p_virt->list, &p_spq->free_pool); p_virt++; p_phys += sizeof(struct ecore_spq_entry); } /* Statistics */ p_spq->normal_count = 0; p_spq->comp_count = 0; p_spq->comp_sent_count = 0; p_spq->unlimited_pending_count = 0; OSAL_MEM_ZERO(p_spq->p_comp_bitmap, SPQ_COMP_BMAP_SIZE * sizeof(unsigned long)); p_spq->comp_bitmap_idx = 0; /* SPQ cid, cannot fail */ ecore_cxt_acquire_cid(p_hwfn, PROTOCOLID_CORE, &p_spq->cid); ecore_spq_hw_initialize(p_hwfn, p_spq); /* reset the chain itself */ ecore_chain_reset(&p_spq->chain); /* Initialize the address/data of the SPQ doorbell */ p_spq->db_addr_offset = DB_ADDR(p_spq->cid, DQ_DEMS_LEGACY); p_db_data = &p_spq->db_data; OSAL_MEM_ZERO(p_db_data, sizeof(*p_db_data)); SET_FIELD(p_db_data->params, CORE_DB_DATA_DEST, DB_DEST_XCM); SET_FIELD(p_db_data->params, CORE_DB_DATA_AGG_CMD, DB_AGG_CMD_MAX); SET_FIELD(p_db_data->params, CORE_DB_DATA_AGG_VAL_SEL, DQ_XCM_CORE_SPQ_PROD_CMD); p_db_data->agg_flags = DQ_XCM_CORE_DQ_CF_CMD; /* Register the SPQ doorbell with the doorbell recovery mechanism */ db_addr = (void *)((u8 *)p_hwfn->doorbells + p_spq->db_addr_offset); rc = ecore_db_recovery_add(p_hwfn->p_dev, db_addr, &p_spq->db_data, DB_REC_WIDTH_32B, DB_REC_KERNEL); if (rc != ECORE_SUCCESS) DP_INFO(p_hwfn, "Failed to register the SPQ doorbell with the doorbell recovery mechanism\n"); } enum _ecore_status_t ecore_spq_alloc(struct ecore_hwfn *p_hwfn) { struct ecore_spq_entry *p_virt = OSAL_NULL; struct ecore_spq *p_spq = OSAL_NULL; dma_addr_t p_phys = 0; u32 capacity; /* SPQ struct */ p_spq = OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(struct ecore_spq)); if (!p_spq) { DP_NOTICE(p_hwfn, false, "Failed to allocate `struct ecore_spq'\n"); return ECORE_NOMEM; } /* SPQ ring */ if (ecore_chain_alloc(p_hwfn->p_dev, ECORE_CHAIN_USE_TO_PRODUCE, ECORE_CHAIN_MODE_SINGLE, ECORE_CHAIN_CNT_TYPE_U16, 0, /* N/A when the mode is SINGLE */ sizeof(struct slow_path_element), &p_spq->chain, OSAL_NULL)) { DP_NOTICE(p_hwfn, false, "Failed to allocate spq chain\n"); goto spq_allocate_fail; } /* allocate and fill the SPQ elements (incl. ramrod data list) */ capacity = ecore_chain_get_capacity(&p_spq->chain); p_virt = OSAL_DMA_ALLOC_COHERENT(p_hwfn->p_dev, &p_phys, capacity * sizeof(struct ecore_spq_entry)); if (!p_virt) { goto spq_allocate_fail; } p_spq->p_virt = p_virt; p_spq->p_phys = p_phys; #ifdef CONFIG_ECORE_LOCK_ALLOC if (OSAL_SPIN_LOCK_ALLOC(p_hwfn, &p_spq->lock)) goto spq_allocate_fail; #endif p_hwfn->p_spq = p_spq; return ECORE_SUCCESS; spq_allocate_fail: ecore_chain_free(p_hwfn->p_dev, &p_spq->chain); OSAL_FREE(p_hwfn->p_dev, p_spq); return ECORE_NOMEM; } void ecore_spq_free(struct ecore_hwfn *p_hwfn) { struct ecore_spq *p_spq = p_hwfn->p_spq; void OSAL_IOMEM *db_addr; u32 capacity; if (!p_spq) return; /* Delete the SPQ doorbell from the doorbell recovery mechanism */ db_addr = (void *)((u8 *)p_hwfn->doorbells + p_spq->db_addr_offset); ecore_db_recovery_del(p_hwfn->p_dev, db_addr, &p_spq->db_data); if (p_spq->p_virt) { capacity = ecore_chain_get_capacity(&p_spq->chain); OSAL_DMA_FREE_COHERENT(p_hwfn->p_dev, p_spq->p_virt, p_spq->p_phys, capacity * sizeof(struct ecore_spq_entry)); } ecore_chain_free(p_hwfn->p_dev, &p_spq->chain); #ifdef CONFIG_ECORE_LOCK_ALLOC OSAL_SPIN_LOCK_DEALLOC(&p_spq->lock); #endif OSAL_FREE(p_hwfn->p_dev, p_spq); p_hwfn->p_spq = OSAL_NULL; } enum _ecore_status_t ecore_spq_get_entry(struct ecore_hwfn *p_hwfn, struct ecore_spq_entry **pp_ent) { struct ecore_spq *p_spq = p_hwfn->p_spq; struct ecore_spq_entry *p_ent = OSAL_NULL; enum _ecore_status_t rc = ECORE_SUCCESS; OSAL_SPIN_LOCK(&p_spq->lock); if (OSAL_LIST_IS_EMPTY(&p_spq->free_pool)) { p_ent = OSAL_ZALLOC(p_hwfn->p_dev, GFP_ATOMIC, sizeof(*p_ent)); if (!p_ent) { DP_NOTICE(p_hwfn, false, "Failed to allocate an SPQ entry for a pending ramrod\n"); rc = ECORE_NOMEM; goto out_unlock; } p_ent->queue = &p_spq->unlimited_pending; } else { p_ent = OSAL_LIST_FIRST_ENTRY(&p_spq->free_pool, struct ecore_spq_entry, list); OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->free_pool); p_ent->queue = &p_spq->pending; } *pp_ent = p_ent; out_unlock: OSAL_SPIN_UNLOCK(&p_spq->lock); return rc; } /* Locked variant; Should be called while the SPQ lock is taken */ static void __ecore_spq_return_entry(struct ecore_hwfn *p_hwfn, struct ecore_spq_entry *p_ent) { OSAL_LIST_PUSH_TAIL(&p_ent->list, &p_hwfn->p_spq->free_pool); } void ecore_spq_return_entry(struct ecore_hwfn *p_hwfn, struct ecore_spq_entry *p_ent) { OSAL_SPIN_LOCK(&p_hwfn->p_spq->lock); __ecore_spq_return_entry(p_hwfn, p_ent); OSAL_SPIN_UNLOCK(&p_hwfn->p_spq->lock); } /** * @brief ecore_spq_add_entry - adds a new entry to the pending * list. Should be used while lock is being held. * * Addes an entry to the pending list is there is room (en empty * element is avaliable in the free_pool), or else places the * entry in the unlimited_pending pool. * * @param p_hwfn * @param p_ent * @param priority * * @return enum _ecore_status_t */ static enum _ecore_status_t ecore_spq_add_entry(struct ecore_hwfn *p_hwfn, struct ecore_spq_entry *p_ent, enum spq_priority priority) { struct ecore_spq *p_spq = p_hwfn->p_spq; if (p_ent->queue == &p_spq->unlimited_pending) { if (OSAL_LIST_IS_EMPTY(&p_spq->free_pool)) { OSAL_LIST_PUSH_TAIL(&p_ent->list, &p_spq->unlimited_pending); p_spq->unlimited_pending_count++; return ECORE_SUCCESS; } else { struct ecore_spq_entry *p_en2; p_en2 = OSAL_LIST_FIRST_ENTRY(&p_spq->free_pool, struct ecore_spq_entry, list); OSAL_LIST_REMOVE_ENTRY(&p_en2->list, &p_spq->free_pool); /* Copy the ring element physical pointer to the new * entry, since we are about to override the entire ring * entry and don't want to lose the pointer. */ p_ent->elem.data_ptr = p_en2->elem.data_ptr; *p_en2 = *p_ent; /* EBLOCK responsible to free the allocated p_ent */ if (p_ent->comp_mode != ECORE_SPQ_MODE_EBLOCK) OSAL_FREE(p_hwfn->p_dev, p_ent); p_ent = p_en2; } } /* entry is to be placed in 'pending' queue */ switch (priority) { case ECORE_SPQ_PRIORITY_NORMAL: OSAL_LIST_PUSH_TAIL(&p_ent->list, &p_spq->pending); p_spq->normal_count++; break; case ECORE_SPQ_PRIORITY_HIGH: OSAL_LIST_PUSH_HEAD(&p_ent->list, &p_spq->pending); p_spq->high_count++; break; default: return ECORE_INVAL; } return ECORE_SUCCESS; } /*************************************************************************** * Accessor ***************************************************************************/ u32 ecore_spq_get_cid(struct ecore_hwfn *p_hwfn) { if (!p_hwfn->p_spq) { return 0xffffffff; /* illegal */ } return p_hwfn->p_spq->cid; } /*************************************************************************** * Posting new Ramrods ***************************************************************************/ static enum _ecore_status_t ecore_spq_post_list(struct ecore_hwfn *p_hwfn, osal_list_t *head, u32 keep_reserve) { struct ecore_spq *p_spq = p_hwfn->p_spq; enum _ecore_status_t rc; /* TODO - implementation might be wasteful; will always keep room * for an additional high priority ramrod (even if one is already * pending FW) */ while (ecore_chain_get_elem_left(&p_spq->chain) > keep_reserve && !OSAL_LIST_IS_EMPTY(head)) { struct ecore_spq_entry *p_ent = OSAL_LIST_FIRST_ENTRY(head, struct ecore_spq_entry, list); if (p_ent != OSAL_NULL) { #if defined(_NTDDK_) #pragma warning(suppress : 6011 28182) #endif OSAL_LIST_REMOVE_ENTRY(&p_ent->list, head); OSAL_LIST_PUSH_TAIL(&p_ent->list, &p_spq->completion_pending); p_spq->comp_sent_count++; rc = ecore_spq_hw_post(p_hwfn, p_spq, p_ent); if (rc) { OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->completion_pending); __ecore_spq_return_entry(p_hwfn, p_ent); return rc; } } } return ECORE_SUCCESS; } enum _ecore_status_t ecore_spq_pend_post(struct ecore_hwfn *p_hwfn) { struct ecore_spq *p_spq = p_hwfn->p_spq; struct ecore_spq_entry *p_ent = OSAL_NULL; while (!OSAL_LIST_IS_EMPTY(&p_spq->free_pool)) { if (OSAL_LIST_IS_EMPTY(&p_spq->unlimited_pending)) break; p_ent = OSAL_LIST_FIRST_ENTRY(&p_spq->unlimited_pending, struct ecore_spq_entry, list); if (!p_ent) return ECORE_INVAL; #if defined(_NTDDK_) #pragma warning(suppress : 6011) #endif OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->unlimited_pending); ecore_spq_add_entry(p_hwfn, p_ent, p_ent->priority); } return ecore_spq_post_list(p_hwfn, &p_spq->pending, SPQ_HIGH_PRI_RESERVE_DEFAULT); } enum _ecore_status_t ecore_spq_post(struct ecore_hwfn *p_hwfn, struct ecore_spq_entry *p_ent, u8 *fw_return_code) { enum _ecore_status_t rc = ECORE_SUCCESS; struct ecore_spq *p_spq = p_hwfn ? p_hwfn->p_spq : OSAL_NULL; bool b_ret_ent = true; if (!p_hwfn) return ECORE_INVAL; if (!p_ent) { DP_NOTICE(p_hwfn, true, "Got a NULL pointer\n"); return ECORE_INVAL; } if (p_hwfn->p_dev->recov_in_prog) { DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ, "Recovery is in progress -> skip spq post [cmd %02x protocol %02x]\n", p_ent->elem.hdr.cmd_id, p_ent->elem.hdr.protocol_id); /* Return success to let the flows to be completed successfully * w/o any error handling. */ return ECORE_SUCCESS; } OSAL_SPIN_LOCK(&p_spq->lock); /* Complete the entry */ rc = ecore_spq_fill_entry(p_hwfn, p_ent); /* Check return value after LOCK is taken for cleaner error flow */ if (rc) goto spq_post_fail; /* Add the request to the pending queue */ rc = ecore_spq_add_entry(p_hwfn, p_ent, p_ent->priority); if (rc) goto spq_post_fail; rc = ecore_spq_pend_post(p_hwfn); if (rc) { /* Since it's possible that pending failed for a different * entry [although unlikely], the failed entry was already * dealt with; No need to return it here. */ b_ret_ent = false; goto spq_post_fail; } OSAL_SPIN_UNLOCK(&p_spq->lock); if (p_ent->comp_mode == ECORE_SPQ_MODE_EBLOCK) { /* For entries in ECORE BLOCK mode, the completion code cannot * perform the necessary cleanup - if it did, we couldn't * access p_ent here to see whether it's successful or not. * Thus, after gaining the answer perform the cleanup here. */ rc = ecore_spq_block(p_hwfn, p_ent, fw_return_code, p_ent->queue == &p_spq->unlimited_pending); if (p_ent->queue == &p_spq->unlimited_pending) { /* This is an allocated p_ent which does not need to * return to pool. */ OSAL_FREE(p_hwfn->p_dev, p_ent); /* TBD: handle error flow and remove p_ent from * completion pending */ return rc; } if (rc) goto spq_post_fail2; /* return to pool */ ecore_spq_return_entry(p_hwfn, p_ent); } return rc; spq_post_fail2: OSAL_SPIN_LOCK(&p_spq->lock); OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->completion_pending); ecore_chain_return_produced(&p_spq->chain); spq_post_fail: /* return to the free pool */ if (b_ret_ent) __ecore_spq_return_entry(p_hwfn, p_ent); OSAL_SPIN_UNLOCK(&p_spq->lock); return rc; } enum _ecore_status_t ecore_spq_completion(struct ecore_hwfn *p_hwfn, __le16 echo, u8 fw_return_code, union event_ring_data *p_data) { struct ecore_spq *p_spq; struct ecore_spq_entry *p_ent = OSAL_NULL; struct ecore_spq_entry *tmp; struct ecore_spq_entry *found = OSAL_NULL; if (!p_hwfn) { return ECORE_INVAL; } p_spq = p_hwfn->p_spq; if (!p_spq) { return ECORE_INVAL; } OSAL_SPIN_LOCK(&p_spq->lock); OSAL_LIST_FOR_EACH_ENTRY_SAFE(p_ent, tmp, &p_spq->completion_pending, list, struct ecore_spq_entry) { if (p_ent->elem.hdr.echo == echo) { OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->completion_pending); /* Avoid overriding of SPQ entries when getting * out-of-order completions, by marking the completions * in a bitmap and increasing the chain consumer only * for the first successive completed entries. */ SPQ_COMP_BMAP_SET_BIT(p_spq, echo); while (SPQ_COMP_BMAP_TEST_BIT(p_spq, p_spq->comp_bitmap_idx)) { SPQ_COMP_BMAP_CLEAR_BIT(p_spq, p_spq->comp_bitmap_idx); p_spq->comp_bitmap_idx++; ecore_chain_return_produced(&p_spq->chain); } p_spq->comp_count++; found = p_ent; break; } /* This is debug and should be relatively uncommon - depends * on scenarios which have mutliple per-PF sent ramrods. */ DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ, "Got completion for echo %04x - doesn't match echo %04x in completion pending list\n", OSAL_LE16_TO_CPU(echo), OSAL_LE16_TO_CPU(p_ent->elem.hdr.echo)); } /* Release lock before callback, as callback may post * an additional ramrod. */ OSAL_SPIN_UNLOCK(&p_spq->lock); if (!found) { DP_NOTICE(p_hwfn, true, "Failed to find an entry this EQE [echo %04x] completes\n", OSAL_LE16_TO_CPU(echo)); return ECORE_EXISTS; } DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ, "Complete EQE [echo %04x]: func %p cookie %p)\n", OSAL_LE16_TO_CPU(echo), p_ent->comp_cb.function, p_ent->comp_cb.cookie); if (found->comp_cb.function) found->comp_cb.function(p_hwfn, found->comp_cb.cookie, p_data, fw_return_code); else DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ, "Got a completion without a callback function\n"); if ((found->comp_mode != ECORE_SPQ_MODE_EBLOCK) || (found->queue == &p_spq->unlimited_pending)) /* EBLOCK is responsible for returning its own entry into the * free list, unless it originally added the entry into the * unlimited pending list. */ ecore_spq_return_entry(p_hwfn, found); return ECORE_SUCCESS; } enum _ecore_status_t ecore_consq_alloc(struct ecore_hwfn *p_hwfn) { struct ecore_consq *p_consq; /* Allocate ConsQ struct */ p_consq = OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(*p_consq)); if (!p_consq) { DP_NOTICE(p_hwfn, false, "Failed to allocate `struct ecore_consq'\n"); return ECORE_NOMEM; } /* Allocate and initialize EQ chain*/ if (ecore_chain_alloc(p_hwfn->p_dev, ECORE_CHAIN_USE_TO_PRODUCE, ECORE_CHAIN_MODE_PBL, ECORE_CHAIN_CNT_TYPE_U16, ECORE_CHAIN_PAGE_SIZE/0x80, 0x80, &p_consq->chain, OSAL_NULL) != ECORE_SUCCESS) { DP_NOTICE(p_hwfn, false, "Failed to allocate consq chain"); goto consq_allocate_fail; } p_hwfn->p_consq = p_consq; return ECORE_SUCCESS; consq_allocate_fail: OSAL_FREE(p_hwfn->p_dev, p_consq); return ECORE_NOMEM; } void ecore_consq_setup(struct ecore_hwfn *p_hwfn) { ecore_chain_reset(&p_hwfn->p_consq->chain); } void ecore_consq_free(struct ecore_hwfn *p_hwfn) { if (!p_hwfn->p_consq) return; ecore_chain_free(p_hwfn->p_dev, &p_hwfn->p_consq->chain); OSAL_FREE(p_hwfn->p_dev, p_hwfn->p_consq); p_hwfn->p_consq = OSAL_NULL; } #ifdef _NTDDK_ #pragma warning(pop) #endif