--- /dev/null
+/*
+ * Copyright (c) 2016 QLogic Corporation.
+ * All rights reserved.
+ * www.qlogic.com
+ *
+ * See LICENSE.qede_pmd for copyright and licensing details.
+ */
+
+#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"
+#include "ecore_hw.h"
+#include "ecore_sriov.h"
+
+/***************************************************************************
+ * Structures & Definitions
+ ***************************************************************************/
+
+#define SPQ_HIGH_PRI_RESERVE_DEFAULT (1)
+#define SPQ_BLOCK_SLEEP_LENGTH (1000)
+
+/***************************************************************************
+ * Blocking Imp. (BLOCK/EBLOCK mode)
+ ***************************************************************************/
+static void ecore_spq_blocking_cb(struct ecore_hwfn *p_hwfn,
+ void *cookie,
+ union event_ring_data *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)
+{
+ int sleep_count = SPQ_BLOCK_SLEEP_LENGTH;
+ struct ecore_spq_comp_done *comp_done;
+ enum _ecore_status_t rc;
+
+ comp_done = (struct ecore_spq_comp_done *)p_ent->comp_cb.cookie;
+ while (sleep_count) {
+ OSAL_POLL_MODE_DPC(p_hwfn);
+ /* validate we receive completion update */
+ 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;
+ }
+ OSAL_MSLEEP(5);
+ sleep_count--;
+ }
+
+ DP_INFO(p_hwfn, "Ramrod is stuck, requesting MCP drain\n");
+ rc = ecore_mcp_drain(p_hwfn, p_hwfn->p_main_ptt);
+ if (rc != ECORE_SUCCESS)
+ DP_NOTICE(p_hwfn, true, "MCP drain failed\n");
+
+ /* Retry after drain */
+ sleep_count = SPQ_BLOCK_SLEEP_LENGTH;
+ while (sleep_count) {
+ /* validate we receive completion update */
+ 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;
+ }
+ OSAL_MSLEEP(5);
+ sleep_count--;
+ }
+
+ if (comp_done->done == 1) {
+ if (p_fw_ret)
+ *p_fw_ret = comp_done->fw_return_code;
+ return ECORE_SUCCESS;
+ }
+
+ DP_NOTICE(p_hwfn, true,
+ "Ramrod is stuck [CID %08x cmd %02x proto %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)
+{
+ u16 pq;
+ struct ecore_cxt_info cxt_info;
+ struct core_conn_context *p_cxt;
+ union ecore_qm_pq_params pq_params;
+ 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",
+ p_spq->cid);
+ return;
+ }
+
+ p_cxt = cxt_info.p_cxt;
+
+ SET_FIELD(p_cxt->xstorm_ag_context.flags10,
+ XSTORM_CORE_CONN_AG_CTX_DQ_CF_EN, 1);
+ SET_FIELD(p_cxt->xstorm_ag_context.flags1,
+ XSTORM_CORE_CONN_AG_CTX_DQ_CF_ACTIVE, 1);
+ /* SET_FIELD(p_cxt->xstorm_ag_context.flags10,
+ * XSTORM_CORE_CONN_AG_CTX_SLOW_PATH_EN, 1);
+ */
+ SET_FIELD(p_cxt->xstorm_ag_context.flags9,
+ XSTORM_CORE_CONN_AG_CTX_CONSOLID_PROD_CF_EN, 1);
+
+ /* CDU validation - FIXME currently disabled */
+
+ /* QM physical queue */
+ OSAL_MEMSET(&pq_params, 0, sizeof(pq_params));
+ pq_params.core.tc = LB_TC;
+ pq = ecore_get_qm_pq(p_hwfn, PROTOCOLID_CORE, &pq_params);
+ p_cxt->xstorm_ag_context.physical_q0 = OSAL_CPU_TO_LE16(pq);
+
+ 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);
+
+ p_cxt->xstorm_st_context.consolid_base_addr.lo =
+ DMA_LO_LE(p_hwfn->p_consq->chain.p_phys_addr);
+ p_cxt->xstorm_st_context.consolid_base_addr.hi =
+ DMA_HI_LE(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;
+ u16 echo = ecore_chain_get_prod_idx(p_chain);
+ struct slow_path_element *elem;
+ struct core_db_data db;
+
+ 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 */
+
+ /* send a doorbell on the slow hwfn session */
+ OSAL_MEMSET(&db, 0, sizeof(db));
+ SET_FIELD(db.params, CORE_DB_DATA_DEST, DB_DEST_XCM);
+ SET_FIELD(db.params, CORE_DB_DATA_AGG_CMD, DB_AGG_CMD_SET);
+ SET_FIELD(db.params, CORE_DB_DATA_AGG_VAL_SEL,
+ DQ_XCM_CORE_SPQ_PROD_CMD);
+ db.agg_flags = DQ_XCM_CORE_DQ_CF_CMD;
+
+ /* validate producer is up to-date */
+ OSAL_RMB(p_hwfn->p_dev);
+
+ db.spq_prod = OSAL_CPU_TO_LE16(ecore_chain_get_prod_idx(p_chain));
+
+ /* do not reorder */
+ OSAL_BARRIER(p_hwfn->p_dev);
+
+ DOORBELL(p_hwfn, DB_ADDR(p_spq->cid, DQ_DEMS_LEGACY), *(u32 *)&db);
+
+ /* make sure doorbell is rang */
+ OSAL_MMIOWB(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",
+ DB_ADDR(p_spq->cid, DQ_DEMS_LEGACY), p_spq->cid, db.params,
+ db.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)
+{
+ switch (p_eqe->protocol_id) {
+ case PROTOCOLID_COMMON:
+ return ecore_sriov_eqe_event(p_hwfn,
+ p_eqe->opcode,
+ p_eqe->echo, &p_eqe->data);
+ default:
+ DP_NOTICE(p_hwfn,
+ true, "Unknown Async completion for protocol: %d\n",
+ p_eqe->protocol_id);
+ return ECORE_INVAL;
+ }
+}
+
+/***************************************************************************
+ * 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,
+ p_eqe->protocol_id, /* Event Protocol ID */
+ p_eqe->reserved0, /* Reserved */
+ OSAL_LE16_TO_CPU(p_eqe->echo),
+ p_eqe->fw_return_code, /* FW return code for SP
+ * ramrods
+ */
+ p_eqe->flags);
+
+ 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));
+
+ return rc;
+}
+
+struct ecore_eq *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(struct ecore_eq));
+ if (!p_eq) {
+ DP_NOTICE(p_hwfn, true,
+ "Failed to allocate `struct ecore_eq'\n");
+ return OSAL_NULL;
+ }
+
+ /* 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)) {
+ DP_NOTICE(p_hwfn, true, "Failed to allocate eq chain");
+ 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);
+
+ return p_eq;
+
+eq_allocate_fail:
+ ecore_eq_free(p_hwfn, p_eq);
+ return OSAL_NULL;
+}
+
+void ecore_eq_setup(struct ecore_hwfn *p_hwfn, struct ecore_eq *p_eq)
+{
+ ecore_chain_reset(&p_eq->chain);
+}
+
+void ecore_eq_free(struct ecore_hwfn *p_hwfn, struct ecore_eq *p_eq)
+{
+ if (!p_eq)
+ return;
+ ecore_chain_free(p_hwfn->p_dev, &p_eq->chain);
+ OSAL_FREE(p_hwfn->p_dev, p_eq);
+}
+
+/***************************************************************************
+* CQE API - manipulate EQ functionality
+***************************************************************************/
+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_entry *p_virt = OSAL_NULL;
+ struct ecore_spq *p_spq = p_hwfn->p_spq;
+ dma_addr_t p_phys = 0;
+ u32 i, capacity;
+
+ 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++) {
+ p_virt->elem.data_ptr.hi = DMA_HI_LE(p_phys);
+ p_virt->elem.data_ptr.lo = DMA_LO_LE(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);
+}
+
+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, true,
+ "Failed to allocate `struct ecore_spq'");
+ 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)) {
+ DP_NOTICE(p_hwfn, true, "Failed to allocate spq chain");
+ 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;
+
+ OSAL_SPIN_LOCK_ALLOC(p_hwfn, &p_spq->lock);
+
+ 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;
+ u32 capacity;
+
+ if (!p_spq)
+ return;
+
+ 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);
+ OSAL_SPIN_LOCK_DEALLOC(&p_spq->lock);
+ OSAL_FREE(p_hwfn->p_dev, p_spq);
+}
+
+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;
+
+ 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(struct ecore_spq_entry));
+ if (!p_ent) {
+ OSAL_SPIN_UNLOCK(&p_spq->lock);
+ DP_NOTICE(p_hwfn, true,
+ "Failed to allocate an SPQ entry"
+ " for a pending ramrod\n");
+ return ECORE_NOMEM;
+ }
+ 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;
+
+ OSAL_SPIN_UNLOCK(&p_spq->lock);
+
+ return ECORE_SUCCESS;
+}
+
+/* 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 available 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;
+ }
+
+ 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;
+
+ /* Setting the cookie to the comp_done of the
+ * new element.
+ */
+ if (p_ent->comp_cb.cookie == &p_ent->comp_done)
+ p_ent->comp_cb.cookie = &p_en2->comp_done;
+
+ *p_en2 = *p_ent;
+
+ 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);
+ 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;
+}
+
+static enum _ecore_status_t ecore_spq_pend_post(struct ecore_hwfn *p_hwfn)
+{
+ enum _ecore_status_t rc = ECORE_NOTIMPL;
+ 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;
+
+ OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->unlimited_pending);
+
+ ecore_spq_add_entry(p_hwfn, p_ent, p_ent->priority);
+ }
+
+ rc = ecore_spq_post_list(p_hwfn,
+ &p_spq->pending, SPQ_HIGH_PRI_RESERVE_DEFAULT);
+ if (rc)
+ return rc;
+
+ return ECORE_SUCCESS;
+}
+
+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]",
+ 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);
+ 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;
+ enum _ecore_status_t rc;
+
+ 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);
+
+ if (found->comp_mode != ECORE_SPQ_MODE_EBLOCK) {
+ /* EBLOCK is responsible for freeing its own entry */
+ ecore_spq_return_entry(p_hwfn, found);
+ }
+
+ /* Attempt to post pending requests */
+ OSAL_SPIN_LOCK(&p_spq->lock);
+ rc = ecore_spq_pend_post(p_hwfn);
+ OSAL_SPIN_UNLOCK(&p_spq->lock);
+
+ return rc;
+}
+
+struct ecore_consq *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(struct ecore_consq));
+ if (!p_consq) {
+ DP_NOTICE(p_hwfn, true,
+ "Failed to allocate `struct ecore_consq'\n");
+ return OSAL_NULL;
+ }
+
+ /* 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)) {
+ DP_NOTICE(p_hwfn, true, "Failed to allocate consq chain");
+ goto consq_allocate_fail;
+ }
+
+ return p_consq;
+
+consq_allocate_fail:
+ ecore_consq_free(p_hwfn, p_consq);
+ return OSAL_NULL;
+}
+
+void ecore_consq_setup(struct ecore_hwfn *p_hwfn, struct ecore_consq *p_consq)
+{
+ ecore_chain_reset(&p_consq->chain);
+}
+
+void ecore_consq_free(struct ecore_hwfn *p_hwfn, struct ecore_consq *p_consq)
+{
+ if (!p_consq)
+ return;
+ ecore_chain_free(p_hwfn->p_dev, &p_consq->chain);
+ OSAL_FREE(p_hwfn->p_dev, p_consq);
+}
Code Review / deb_dpdk.git / blobdiff