/*
* 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 <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#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