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freebsd-nq/sys/dev/ocs_fc/ocs_xport.c
Ram Kishore Vegesna 965e2154e7 ocs_fc: Support persistent topology feature 
Summary: Enable persistent topology across power cycles/firmware resets.

Reviewed by: mav

MFC after: 3 days

Differential Revision: https://reviews.freebsd.org/D34425
2022-03-04 10:19:03 +05:30

1136 lines
32 KiB
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/*-
* Copyright (c) 2017 Broadcom. All rights reserved.
* The term "Broadcom" refers to Broadcom Limited and/or its subsidiaries.
*
* 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.
*
* 3. Neither the name of the copyright holder nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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 HOLDER 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.
*
* $FreeBSD$
*/
/**
* @file
* FC transport API
*
*/
#include "ocs.h"
#include "ocs_device.h"
static void ocs_xport_link_stats_cb(int32_t status, uint32_t num_counters, ocs_hw_link_stat_counts_t *counters, void *arg);
static void ocs_xport_host_stats_cb(int32_t status, uint32_t num_counters, ocs_hw_host_stat_counts_t *counters, void *arg);
/**
* @brief Post node event callback argument.
*/
typedef struct {
ocs_sem_t sem;
ocs_node_t *node;
ocs_sm_event_t evt;
void *context;
} ocs_xport_post_node_event_t;
/**
* @brief Allocate a transport object.
*
* @par Description
* A transport object is allocated, and associated with a device instance.
*
* @param ocs Pointer to device instance.
*
* @return Returns the pointer to the allocated transport object, or NULL if failed.
*/
ocs_xport_t *
ocs_xport_alloc(ocs_t *ocs)
{
ocs_xport_t *xport;
ocs_assert(ocs, NULL);
xport = ocs_malloc(ocs, sizeof(*xport), OCS_M_ZERO);
if (xport != NULL) {
xport->ocs = ocs;
}
return xport;
}
/**
* @brief Create the RQ threads and the circular buffers used to pass sequences.
*
* @par Description
* Creates the circular buffers and the servicing threads for RQ processing.
*
* @param xport Pointer to transport object
*
* @return Returns 0 on success, or a non-zero value on failure.
*/
static void
ocs_xport_rq_threads_teardown(ocs_xport_t *xport)
{
ocs_t *ocs = xport->ocs;
uint32_t i;
if (xport->num_rq_threads == 0 ||
xport->rq_thread_info == NULL) {
return;
}
/* Abort any threads */
for (i = 0; i < xport->num_rq_threads; i++) {
if (xport->rq_thread_info[i].thread_started) {
ocs_thread_terminate(&xport->rq_thread_info[i].thread);
/* wait for the thread to exit */
ocs_log_debug(ocs, "wait for thread %d to exit\n", i);
while (xport->rq_thread_info[i].thread_started) {
ocs_udelay(10000);
}
ocs_log_debug(ocs, "thread %d to exited\n", i);
}
if (xport->rq_thread_info[i].seq_cbuf != NULL) {
ocs_cbuf_free(xport->rq_thread_info[i].seq_cbuf);
xport->rq_thread_info[i].seq_cbuf = NULL;
}
}
}
/**
* @brief Create the RQ threads and the circular buffers used to pass sequences.
*
* @par Description
* Creates the circular buffers and the servicing threads for RQ processing.
*
* @param xport Pointer to transport object.
* @param num_rq_threads Number of RQ processing threads that the
* driver creates.
*
* @return Returns 0 on success, or a non-zero value on failure.
*/
static int32_t
ocs_xport_rq_threads_create(ocs_xport_t *xport, uint32_t num_rq_threads)
{
ocs_t *ocs = xport->ocs;
int32_t rc = 0;
uint32_t i;
xport->num_rq_threads = num_rq_threads;
ocs_log_debug(ocs, "number of RQ threads %d\n", num_rq_threads);
if (num_rq_threads == 0) {
return 0;
}
/* Allocate the space for the thread objects */
xport->rq_thread_info = ocs_malloc(ocs, sizeof(ocs_xport_rq_thread_info_t) * num_rq_threads, OCS_M_ZERO);
if (xport->rq_thread_info == NULL) {
ocs_log_err(ocs, "memory allocation failure\n");
return -1;
}
/* Create the circular buffers and threads. */
for (i = 0; i < num_rq_threads; i++) {
xport->rq_thread_info[i].ocs = ocs;
xport->rq_thread_info[i].seq_cbuf = ocs_cbuf_alloc(ocs, OCS_HW_RQ_NUM_HDR);
if (xport->rq_thread_info[i].seq_cbuf == NULL) {
goto ocs_xport_rq_threads_create_error;
}
ocs_snprintf(xport->rq_thread_info[i].thread_name,
sizeof(xport->rq_thread_info[i].thread_name),
"ocs_unsol_rq:%d:%d", ocs->instance_index, i);
rc = ocs_thread_create(ocs, &xport->rq_thread_info[i].thread, ocs_unsol_rq_thread,
xport->rq_thread_info[i].thread_name,
&xport->rq_thread_info[i], OCS_THREAD_RUN);
if (rc) {
ocs_log_err(ocs, "ocs_thread_create failed: %d\n", rc);
goto ocs_xport_rq_threads_create_error;
}
xport->rq_thread_info[i].thread_started = TRUE;
}
return 0;
ocs_xport_rq_threads_create_error:
ocs_xport_rq_threads_teardown(xport);
return -1;
}
/**
* @brief Do as much allocation as possible, but do not initialization the device.
*
* @par Description
* Performs the functions required to get a device ready to run.
*
* @param xport Pointer to transport object.
*
* @return Returns 0 on success, or a non-zero value on failure.
*/
int32_t
ocs_xport_attach(ocs_xport_t *xport)
{
ocs_t *ocs = xport->ocs;
int32_t rc;
uint32_t max_sgl;
uint32_t n_sgl;
uint32_t i;
uint32_t value;
uint32_t max_remote_nodes;
/* booleans used for cleanup if initialization fails */
uint8_t io_pool_created = FALSE;
uint8_t node_pool_created = FALSE;
uint8_t rq_threads_created = FALSE;
ocs_list_init(&ocs->domain_list, ocs_domain_t, link);
for (i = 0; i < SLI4_MAX_FCFI; i++) {
xport->fcfi[i].hold_frames = 1;
ocs_lock_init(ocs, &xport->fcfi[i].pend_frames_lock, "xport pend_frames[%d]", i);
ocs_list_init(&xport->fcfi[i].pend_frames, ocs_hw_sequence_t, link);
}
rc = ocs_hw_set_ptr(&ocs->hw, OCS_HW_WAR_VERSION, ocs->hw_war_version);
if (rc) {
ocs_log_test(ocs, "can't set OCS_HW_WAR_VERSION\n");
return -1;
}
rc = ocs_hw_setup(&ocs->hw, ocs, SLI4_PORT_TYPE_FC);
if (rc) {
ocs_log_err(ocs, "%s: Can't setup hardware\n", ocs->desc);
return -1;
} else if (ocs->ctrlmask & OCS_CTRLMASK_CRASH_RESET) {
ocs_log_debug(ocs, "stopping after ocs_hw_setup\n");
return -1;
}
ocs_hw_set(&ocs->hw, OCS_HW_BOUNCE, ocs->hw_bounce);
ocs_log_debug(ocs, "HW bounce: %d\n", ocs->hw_bounce);
ocs_hw_set(&ocs->hw, OCS_HW_RQ_SELECTION_POLICY, ocs->rq_selection_policy);
ocs_hw_set(&ocs->hw, OCS_HW_RR_QUANTA, ocs->rr_quanta);
ocs_hw_get(&ocs->hw, OCS_HW_RQ_SELECTION_POLICY, &value);
ocs_log_debug(ocs, "RQ Selection Policy: %d\n", value);
ocs_hw_set_ptr(&ocs->hw, OCS_HW_FILTER_DEF, (void*) ocs->filter_def);
ocs_hw_get(&ocs->hw, OCS_HW_MAX_SGL, &max_sgl);
max_sgl -= SLI4_SGE_MAX_RESERVED;
n_sgl = MIN(OCS_FC_MAX_SGL, max_sgl);
/* EVT: For chained SGL testing */
if (ocs->ctrlmask & OCS_CTRLMASK_TEST_CHAINED_SGLS) {
n_sgl = 4;
}
/* Note: number of SGLs must be set for ocs_node_create_pool */
if (ocs_hw_set(&ocs->hw, OCS_HW_N_SGL, n_sgl) != OCS_HW_RTN_SUCCESS) {
ocs_log_err(ocs, "%s: Can't set number of SGLs\n", ocs->desc);
return -1;
} else {
ocs_log_debug(ocs, "%s: Configured for %d SGLs\n", ocs->desc, n_sgl);
}
ocs_hw_get(&ocs->hw, OCS_HW_MAX_NODES, &max_remote_nodes);
if (!ocs->max_remote_nodes)
ocs->max_remote_nodes = max_remote_nodes;
rc = ocs_node_create_pool(ocs, ocs->max_remote_nodes);
if (rc) {
ocs_log_err(ocs, "Can't allocate node pool\n");
goto ocs_xport_attach_cleanup;
} else {
node_pool_created = TRUE;
}
/* EVT: if testing chained SGLs allocate OCS_FC_MAX_SGL SGE's in the IO */
xport->io_pool = ocs_io_pool_create(ocs, ocs->num_scsi_ios,
(ocs->ctrlmask & OCS_CTRLMASK_TEST_CHAINED_SGLS) ? OCS_FC_MAX_SGL : n_sgl);
if (xport->io_pool == NULL) {
ocs_log_err(ocs, "Can't allocate IO pool\n");
goto ocs_xport_attach_cleanup;
} else {
io_pool_created = TRUE;
}
/*
* setup the RQ processing threads
*/
if (ocs_xport_rq_threads_create(xport, ocs->rq_threads) != 0) {
ocs_log_err(ocs, "failure creating RQ threads\n");
goto ocs_xport_attach_cleanup;
}
rq_threads_created = TRUE;
return 0;
ocs_xport_attach_cleanup:
if (io_pool_created) {
ocs_io_pool_free(xport->io_pool);
}
if (node_pool_created) {
ocs_node_free_pool(ocs);
}
return -1;
}
/**
* @brief Determines how to setup auto Xfer ready.
*
* @par Description
* @param xport Pointer to transport object.
*
* @return Returns 0 on success or a non-zero value on failure.
*/
static int32_t
ocs_xport_initialize_auto_xfer_ready(ocs_xport_t *xport)
{
ocs_t *ocs = xport->ocs;
uint32_t auto_xfer_rdy;
char prop_buf[32];
uint32_t ramdisc_blocksize = 512;
uint8_t p_type = 0;
ocs_hw_get(&ocs->hw, OCS_HW_AUTO_XFER_RDY_CAPABLE, &auto_xfer_rdy);
if (!auto_xfer_rdy) {
ocs->auto_xfer_rdy_size = 0;
ocs_log_test(ocs, "Cannot enable auto xfer rdy for this port\n");
return 0;
}
if (ocs_hw_set(&ocs->hw, OCS_HW_AUTO_XFER_RDY_SIZE, ocs->auto_xfer_rdy_size)) {
ocs_log_test(ocs, "%s: Can't set auto xfer rdy mode\n", ocs->desc);
return -1;
}
/*
* Determine if we are doing protection in the backend. We are looking
* at the modules parameters here. The backend cannot allow a format
* command to change the protection mode when using this feature,
* otherwise the firmware will not do the proper thing.
*/
if (ocs_get_property("p_type", prop_buf, sizeof(prop_buf)) == 0) {
p_type = ocs_strtoul(prop_buf, 0, 0);
}
if (ocs_get_property("ramdisc_blocksize", prop_buf, sizeof(prop_buf)) == 0) {
ramdisc_blocksize = ocs_strtoul(prop_buf, 0, 0);
}
if (ocs_get_property("external_dif", prop_buf, sizeof(prop_buf)) == 0) {
if(ocs_strlen(prop_buf)) {
if (p_type == 0) {
p_type = 1;
}
}
}
if (p_type != 0) {
if (ocs_hw_set(&ocs->hw, OCS_HW_AUTO_XFER_RDY_T10_ENABLE, TRUE)) {
ocs_log_test(ocs, "%s: Can't set auto xfer rdy mode\n", ocs->desc);
return -1;
}
if (ocs_hw_set(&ocs->hw, OCS_HW_AUTO_XFER_RDY_BLK_SIZE, ramdisc_blocksize)) {
ocs_log_test(ocs, "%s: Can't set auto xfer rdy blk size\n", ocs->desc);
return -1;
}
if (ocs_hw_set(&ocs->hw, OCS_HW_AUTO_XFER_RDY_P_TYPE, p_type)) {
ocs_log_test(ocs, "%s: Can't set auto xfer rdy mode\n", ocs->desc);
return -1;
}
if (ocs_hw_set(&ocs->hw, OCS_HW_AUTO_XFER_RDY_REF_TAG_IS_LBA, TRUE)) {
ocs_log_test(ocs, "%s: Can't set auto xfer rdy ref tag\n", ocs->desc);
return -1;
}
if (ocs_hw_set(&ocs->hw, OCS_HW_AUTO_XFER_RDY_APP_TAG_VALID, FALSE)) {
ocs_log_test(ocs, "%s: Can't set auto xfer rdy app tag valid\n", ocs->desc);
return -1;
}
}
ocs_log_debug(ocs, "Auto xfer rdy is enabled, p_type=%d, blksize=%d\n",
p_type, ramdisc_blocksize);
return 0;
}
/**
* @brief Initialize link topology config
*
* @par Description
* Topology can be fetched from mod-param or Persistet Topology(PT).
* a. Mod-param value is used when the value is 1(P2P) or 2(LOOP).
* a. PT is used if mod-param is not provided( i.e, default value of AUTO)
* Also, if mod-param is used, update PT.
*
* @param ocs Pointer to ocs
*
* @return Returns 0 on success, or a non-zero value on failure.
*/
static int
ocs_topology_setup(ocs_t *ocs)
{
uint32_t topology;
if (ocs->topology == OCS_HW_TOPOLOGY_AUTO) {
topology = ocs_hw_get_config_persistent_topology(&ocs->hw);
} else {
topology = ocs->topology;
/* ignore failure here. link will come-up either in auto mode
* if PT is not supported or last saved PT value */
ocs_hw_set_persistent_topology(&ocs->hw, topology, OCS_CMD_POLL);
}
return ocs_hw_set(&ocs->hw, OCS_HW_TOPOLOGY, topology);
}
/**
* @brief Initializes the device.
*
* @par Description
* Performs the functions required to make a device functional.
*
* @param xport Pointer to transport object.
*
* @return Returns 0 on success, or a non-zero value on failure.
*/
int32_t
ocs_xport_initialize(ocs_xport_t *xport)
{
ocs_t *ocs = xport->ocs;
int32_t rc;
uint32_t i;
uint32_t max_hw_io;
uint32_t max_sgl;
uint32_t hlm;
uint32_t rq_limit;
uint32_t dif_capable;
uint8_t dif_separate = 0;
char prop_buf[32];
/* booleans used for cleanup if initialization fails */
uint8_t ini_device_set = FALSE;
uint8_t tgt_device_set = FALSE;
uint8_t hw_initialized = FALSE;
ocs_hw_get(&ocs->hw, OCS_HW_MAX_IO, &max_hw_io);
if (ocs_hw_set(&ocs->hw, OCS_HW_N_IO, max_hw_io) != OCS_HW_RTN_SUCCESS) {
ocs_log_err(ocs, "%s: Can't set number of IOs\n", ocs->desc);
return -1;
}
ocs_hw_get(&ocs->hw, OCS_HW_MAX_SGL, &max_sgl);
max_sgl -= SLI4_SGE_MAX_RESERVED;
if (ocs->enable_hlm) {
ocs_hw_get(&ocs->hw, OCS_HW_HIGH_LOGIN_MODE, &hlm);
if (!hlm) {
ocs->enable_hlm = FALSE;
ocs_log_err(ocs, "Cannot enable high login mode for this port\n");
} else {
ocs_log_debug(ocs, "High login mode is enabled\n");
if (ocs_hw_set(&ocs->hw, OCS_HW_HIGH_LOGIN_MODE, TRUE)) {
ocs_log_err(ocs, "%s: Can't set high login mode\n", ocs->desc);
return -1;
}
}
}
/* validate the auto xfer_rdy size */
if (ocs->auto_xfer_rdy_size > 0 &&
(ocs->auto_xfer_rdy_size < 2048 ||
ocs->auto_xfer_rdy_size > 65536)) {
ocs_log_err(ocs, "Auto XFER_RDY size is out of range (2K-64K)\n");
return -1;
}
ocs_hw_get(&ocs->hw, OCS_HW_MAX_IO, &max_hw_io);
if (ocs->auto_xfer_rdy_size > 0) {
if (ocs_xport_initialize_auto_xfer_ready(xport)) {
ocs_log_err(ocs, "%s: Failed auto xfer ready setup\n", ocs->desc);
return -1;
}
if (ocs->esoc){
ocs_hw_set(&ocs->hw, OCS_ESOC, TRUE);
}
}
if (ocs->explicit_buffer_list) {
/* Are pre-registered SGL's required? */
ocs_hw_get(&ocs->hw, OCS_HW_PREREGISTER_SGL, &i);
if (i == TRUE) {
ocs_log_err(ocs, "Explicit Buffer List not supported on this device, not enabled\n");
} else {
ocs_hw_set(&ocs->hw, OCS_HW_PREREGISTER_SGL, FALSE);
}
}
/* Setup persistent topology based on topology mod-param value */
rc = ocs_topology_setup(ocs);
if (rc) {
ocs_log_err(ocs, "%s: Can't set the toplogy\n", ocs->desc);
return -1;
}
if (ocs_hw_set(&ocs->hw, OCS_HW_TOPOLOGY, ocs->topology) != OCS_HW_RTN_SUCCESS) {
ocs_log_err(ocs, "%s: Can't set the toplogy\n", ocs->desc);
return -1;
}
ocs_hw_set(&ocs->hw, OCS_HW_RQ_DEFAULT_BUFFER_SIZE, OCS_FC_RQ_SIZE_DEFAULT);
if (ocs_hw_set(&ocs->hw, OCS_HW_LINK_SPEED, ocs->speed) != OCS_HW_RTN_SUCCESS) {
ocs_log_err(ocs, "%s: Can't set the link speed\n", ocs->desc);
return -1;
}
if (ocs_hw_set(&ocs->hw, OCS_HW_ETH_LICENSE, ocs->ethernet_license) != OCS_HW_RTN_SUCCESS) {
ocs_log_err(ocs, "%s: Can't set the ethernet license\n", ocs->desc);
return -1;
}
/* currently only lancer support setting the CRC seed value */
if (ocs->hw.sli.asic_type == SLI4_ASIC_TYPE_LANCER) {
if (ocs_hw_set(&ocs->hw, OCS_HW_DIF_SEED, OCS_FC_DIF_SEED) != OCS_HW_RTN_SUCCESS) {
ocs_log_err(ocs, "%s: Can't set the DIF seed\n", ocs->desc);
return -1;
}
}
/* Set the Dif mode */
if (0 == ocs_hw_get(&ocs->hw, OCS_HW_DIF_CAPABLE, &dif_capable)) {
if (dif_capable) {
if (ocs_get_property("dif_separate", prop_buf, sizeof(prop_buf)) == 0) {
dif_separate = ocs_strtoul(prop_buf, 0, 0);
}
if ((rc = ocs_hw_set(&ocs->hw, OCS_HW_DIF_MODE,
(dif_separate == 0 ? OCS_HW_DIF_MODE_INLINE : OCS_HW_DIF_MODE_SEPARATE)))) {
ocs_log_err(ocs, "Requested DIF MODE not supported\n");
}
}
}
if (ocs->target_io_timer_sec) {
ocs_log_debug(ocs, "setting target io timer=%d\n", ocs->target_io_timer_sec);
ocs_hw_set(&ocs->hw, OCS_HW_EMULATE_TARGET_WQE_TIMEOUT, TRUE);
}
ocs_hw_callback(&ocs->hw, OCS_HW_CB_DOMAIN, ocs_domain_cb, ocs);
ocs_hw_callback(&ocs->hw, OCS_HW_CB_REMOTE_NODE, ocs_remote_node_cb, ocs);
ocs_hw_callback(&ocs->hw, OCS_HW_CB_UNSOLICITED, ocs_unsolicited_cb, ocs);
ocs_hw_callback(&ocs->hw, OCS_HW_CB_PORT, ocs_port_cb, ocs);
ocs->fw_version = (const char*) ocs_hw_get_ptr(&ocs->hw, OCS_HW_FW_REV);
/* Initialize vport list */
ocs_list_init(&xport->vport_list, ocs_vport_spec_t, link);
ocs_lock_init(ocs, &xport->io_pending_lock, "io_pending_lock[%d]", ocs->instance_index);
ocs_list_init(&xport->io_pending_list, ocs_io_t, io_pending_link);
ocs_atomic_init(&xport->io_active_count, 0);
ocs_atomic_init(&xport->io_pending_count, 0);
ocs_atomic_init(&xport->io_total_free, 0);
ocs_atomic_init(&xport->io_total_pending, 0);
ocs_atomic_init(&xport->io_alloc_failed_count, 0);
ocs_atomic_init(&xport->io_pending_recursing, 0);
ocs_lock_init(ocs, &ocs->hw.watchdog_lock, " Watchdog Lock[%d]", ocs_instance(ocs));
rc = ocs_hw_init(&ocs->hw);
if (rc) {
ocs_log_err(ocs, "ocs_hw_init failure\n");
goto ocs_xport_init_cleanup;
} else {
hw_initialized = TRUE;
}
rq_limit = max_hw_io/2;
if (ocs_hw_set(&ocs->hw, OCS_HW_RQ_PROCESS_LIMIT, rq_limit) != OCS_HW_RTN_SUCCESS) {
ocs_log_err(ocs, "%s: Can't set the RQ process limit\n", ocs->desc);
}
if (ocs->config_tgt) {
rc = ocs_scsi_tgt_new_device(ocs);
if (rc) {
ocs_log_err(ocs, "failed to initialize target\n");
goto ocs_xport_init_cleanup;
} else {
tgt_device_set = TRUE;
}
}
if (ocs->enable_ini) {
rc = ocs_scsi_ini_new_device(ocs);
if (rc) {
ocs_log_err(ocs, "failed to initialize initiator\n");
goto ocs_xport_init_cleanup;
} else {
ini_device_set = TRUE;
}
}
/* Add vports */
if (ocs->num_vports != 0) {
uint32_t max_vports;
ocs_hw_get(&ocs->hw, OCS_HW_MAX_VPORTS, &max_vports);
if (ocs->num_vports < max_vports) {
ocs_log_debug(ocs, "Provisioning %d vports\n", ocs->num_vports);
for (i = 0; i < ocs->num_vports; i++) {
ocs_vport_create_spec(ocs, 0, 0, UINT32_MAX, ocs->enable_ini, ocs->enable_tgt, NULL, NULL);
}
} else {
ocs_log_err(ocs, "failed to create vports. num_vports range should be (1-%d) \n", max_vports-1);
goto ocs_xport_init_cleanup;
}
}
return 0;
ocs_xport_init_cleanup:
if (ini_device_set) {
ocs_scsi_ini_del_device(ocs);
}
if (tgt_device_set) {
ocs_scsi_tgt_del_device(ocs);
}
if (hw_initialized) {
/* ocs_hw_teardown can only execute after ocs_hw_init */
ocs_hw_teardown(&ocs->hw);
}
return -1;
}
/**
* @brief Detaches the transport from the device.
*
* @par Description
* Performs the functions required to shut down a device.
*
* @param xport Pointer to transport object.
*
* @return Returns 0 on success or a non-zero value on failure.
*/
int32_t
ocs_xport_detach(ocs_xport_t *xport)
{
ocs_t *ocs = xport->ocs;
/* free resources associated with target-server and initiator-client */
if (ocs->config_tgt)
ocs_scsi_tgt_del_device(ocs);
if (ocs->enable_ini) {
ocs_scsi_ini_del_device(ocs);
/*Shutdown FC Statistics timer*/
if (ocs_timer_pending(&ocs->xport->stats_timer))
ocs_del_timer(&ocs->xport->stats_timer);
}
ocs_hw_teardown(&ocs->hw);
return 0;
}
/**
* @brief domain list empty callback
*
* @par Description
* Function is invoked when the device domain list goes empty. By convention
* @c arg points to an ocs_sem_t instance, that is incremented.
*
* @param ocs Pointer to device object.
* @param arg Pointer to semaphore instance.
*
* @return None.
*/
static void
ocs_xport_domain_list_empty_cb(ocs_t *ocs, void *arg)
{
ocs_sem_t *sem = arg;
ocs_assert(ocs);
ocs_assert(sem);
ocs_sem_v(sem);
}
/**
* @brief post node event callback
*
* @par Description
* This function is called from the mailbox completion interrupt context to post an
* event to a node object. By doing this in the interrupt context, it has
* the benefit of only posting events in the interrupt context, deferring the need to
* create a per event node lock.
*
* @param hw Pointer to HW structure.
* @param status Completion status for mailbox command.
* @param mqe Mailbox queue completion entry.
* @param arg Callback argument.
*
* @return Returns 0 on success, a negative error code value on failure.
*/
static int32_t
ocs_xport_post_node_event_cb(ocs_hw_t *hw, int32_t status, uint8_t *mqe, void *arg)
{
ocs_xport_post_node_event_t *payload = arg;
if (payload != NULL) {
ocs_node_post_event(payload->node, payload->evt, payload->context);
ocs_sem_v(&payload->sem);
}
return 0;
}
/**
* @brief Initiate force free.
*
* @par Description
* Perform force free of OCS.
*
* @param xport Pointer to transport object.
*
* @return None.
*/
static void
ocs_xport_force_free(ocs_xport_t *xport)
{
ocs_t *ocs = xport->ocs;
ocs_domain_t *domain;
ocs_domain_t *next;
ocs_log_debug(ocs, "reset required, do force shutdown\n");
ocs_device_lock(ocs);
ocs_list_foreach_safe(&ocs->domain_list, domain, next) {
ocs_domain_force_free(domain);
}
ocs_device_unlock(ocs);
}
/**
* @brief Perform transport attach function.
*
* @par Description
* Perform the attach function, which for the FC transport makes a HW call
* to bring up the link.
*
* @param xport pointer to transport object.
* @param cmd command to execute.
*
* ocs_xport_control(ocs_xport_t *xport, OCS_XPORT_PORT_ONLINE)
* ocs_xport_control(ocs_xport_t *xport, OCS_XPORT_PORT_OFFLINE)
* ocs_xport_control(ocs_xport_t *xport, OCS_XPORT_PORT_SHUTDOWN)
* ocs_xport_control(ocs_xport_t *xport, OCS_XPORT_POST_NODE_EVENT, ocs_node_t *node, ocs_sm_event_t, void *context)
*
* @return Returns 0 on success, or a negative error code value on failure.
*/
int32_t
ocs_xport_control(ocs_xport_t *xport, ocs_xport_ctrl_e cmd, ...)
{
uint32_t rc = 0;
ocs_t *ocs = NULL;
va_list argp;
ocs_assert(xport, -1);
ocs_assert(xport->ocs, -1);
ocs = xport->ocs;
switch (cmd) {
case OCS_XPORT_PORT_ONLINE: {
/* Bring the port on-line */
rc = ocs_hw_port_control(&ocs->hw, OCS_HW_PORT_INIT, 0, NULL, NULL);
if (rc) {
ocs_log_err(ocs, "%s: Can't init port\n", ocs->desc);
} else {
xport->configured_link_state = cmd;
}
break;
}
case OCS_XPORT_PORT_OFFLINE: {
if (ocs_hw_port_control(&ocs->hw, OCS_HW_PORT_SHUTDOWN, 0, NULL, NULL)) {
ocs_log_err(ocs, "port shutdown failed\n");
} else {
xport->configured_link_state = cmd;
}
break;
}
case OCS_XPORT_SHUTDOWN: {
ocs_sem_t sem;
uint32_t reset_required;
/* if a PHYSDEV reset was performed (e.g. hw dump), will affect
* all PCI functions; orderly shutdown won't work, just force free
*/
/* TODO: need to poll this regularly... */
if (ocs_hw_get(&ocs->hw, OCS_HW_RESET_REQUIRED, &reset_required) != OCS_HW_RTN_SUCCESS) {
reset_required = 0;
}
if (reset_required) {
ocs_log_debug(ocs, "reset required, do force shutdown\n");
ocs_xport_force_free(xport);
break;
}
ocs_sem_init(&sem, 0, "domain_list_sem");
ocs_register_domain_list_empty_cb(ocs, ocs_xport_domain_list_empty_cb, &sem);
if (ocs_hw_port_control(&ocs->hw, OCS_HW_PORT_SHUTDOWN, 0, NULL, NULL)) {
ocs_log_debug(ocs, "port shutdown failed, do force shutdown\n");
ocs_xport_force_free(xport);
} else {
ocs_log_debug(ocs, "Waiting %d seconds for domain shutdown.\n", (OCS_FC_DOMAIN_SHUTDOWN_TIMEOUT_USEC/1000000));
rc = ocs_sem_p(&sem, OCS_FC_DOMAIN_SHUTDOWN_TIMEOUT_USEC);
if (rc) {
ocs_log_debug(ocs, "Note: Domain shutdown timed out\n");
ocs_xport_force_free(xport);
}
}
ocs_register_domain_list_empty_cb(ocs, NULL, NULL);
/* Free up any saved virtual ports */
ocs_vport_del_all(ocs);
break;
}
/*
* POST_NODE_EVENT: post an event to a node object
*
* This transport function is used to post an event to a node object. It does
* this by submitting a NOP mailbox command to defer execution to the
* interrupt context (thereby enforcing the serialized execution of event posting
* to the node state machine instances)
*
* A counting semaphore is used to make the call synchronous (we wait until
* the callback increments the semaphore before returning (or times out)
*/
case OCS_XPORT_POST_NODE_EVENT: {
ocs_node_t *node;
ocs_sm_event_t evt;
void *context;
ocs_xport_post_node_event_t payload;
ocs_t *ocs;
ocs_hw_t *hw;
/* Retrieve arguments */
va_start(argp, cmd);
node = va_arg(argp, ocs_node_t*);
evt = va_arg(argp, ocs_sm_event_t);
context = va_arg(argp, void *);
va_end(argp);
ocs_assert(node, -1);
ocs_assert(node->ocs, -1);
ocs = node->ocs;
hw = &ocs->hw;
/* if node's state machine is disabled, don't bother continuing */
if (!node->sm.current_state) {
ocs_log_test(ocs, "node %p state machine disabled\n", node);
return -1;
}
/* Setup payload */
ocs_memset(&payload, 0, sizeof(payload));
ocs_sem_init(&payload.sem, 0, "xport_post_node_Event");
payload.node = node;
payload.evt = evt;
payload.context = context;
if (ocs_hw_async_call(hw, ocs_xport_post_node_event_cb, &payload)) {
ocs_log_test(ocs, "ocs_hw_async_call failed\n");
rc = -1;
break;
}
/* Wait for completion */
if (ocs_sem_p(&payload.sem, OCS_SEM_FOREVER)) {
ocs_log_test(ocs, "POST_NODE_EVENT: sem wait failed\n");
rc = -1;
}
break;
}
/*
* Set wwnn for the port. This will be used instead of the default provided by FW.
*/
case OCS_XPORT_WWNN_SET: {
uint64_t wwnn;
/* Retrieve arguments */
va_start(argp, cmd);
wwnn = va_arg(argp, uint64_t);
va_end(argp);
ocs_log_debug(ocs, " WWNN %016" PRIx64 "\n", wwnn);
xport->req_wwnn = wwnn;
break;
}
/*
* Set wwpn for the port. This will be used instead of the default provided by FW.
*/
case OCS_XPORT_WWPN_SET: {
uint64_t wwpn;
/* Retrieve arguments */
va_start(argp, cmd);
wwpn = va_arg(argp, uint64_t);
va_end(argp);
ocs_log_debug(ocs, " WWPN %016" PRIx64 "\n", wwpn);
xport->req_wwpn = wwpn;
break;
}
default:
break;
}
return rc;
}
/**
* @brief Return status on a link.
*
* @par Description
* Returns status information about a link.
*
* @param xport Pointer to transport object.
* @param cmd Command to execute.
* @param result Pointer to result value.
*
* ocs_xport_status(ocs_xport_t *xport, OCS_XPORT_PORT_STATUS)
* ocs_xport_status(ocs_xport_t *xport, OCS_XPORT_LINK_SPEED, ocs_xport_stats_t *result)
* return link speed in MB/sec
* ocs_xport_status(ocs_xport_t *xport, OCS_XPORT_IS_SUPPORTED_LINK_SPEED, ocs_xport_stats_t *result)
* [in] *result is speed to check in MB/s
* returns 1 if supported, 0 if not
* ocs_xport_status(ocs_xport_t *xport, OCS_XPORT_LINK_STATISTICS, ocs_xport_stats_t *result)
* return link/host port stats
* ocs_xport_status(ocs_xport_t *xport, OCS_XPORT_LINK_STAT_RESET, ocs_xport_stats_t *result)
* resets link/host stats
*
*
* @return Returns 0 on success, or a negative error code value on failure.
*/
int32_t
ocs_xport_status(ocs_xport_t *xport, ocs_xport_status_e cmd, ocs_xport_stats_t *result)
{
uint32_t rc = 0;
ocs_t *ocs = NULL;
ocs_xport_stats_t value;
ocs_hw_rtn_e hw_rc;
ocs_assert(xport, -1);
ocs_assert(xport->ocs, -1);
ocs = xport->ocs;
switch (cmd) {
case OCS_XPORT_CONFIG_PORT_STATUS:
ocs_assert(result, -1);
if (xport->configured_link_state == 0) {
/* Initial state is offline. configured_link_state is */
/* set to online explicitly when port is brought online. */
xport->configured_link_state = OCS_XPORT_PORT_OFFLINE;
}
result->value = xport->configured_link_state;
break;
case OCS_XPORT_PORT_STATUS:
ocs_assert(result, -1);
/* Determine port status based on link speed. */
hw_rc = ocs_hw_get(&(ocs->hw), OCS_HW_LINK_SPEED, &value.value);
if (hw_rc == OCS_HW_RTN_SUCCESS) {
if (value.value == 0) {
result->value = 0;
} else {
result->value = 1;
}
rc = 0;
} else {
rc = -1;
}
break;
case OCS_XPORT_LINK_SPEED: {
uint32_t speed;
ocs_assert(result, -1);
result->value = 0;
rc = ocs_hw_get(&ocs->hw, OCS_HW_LINK_SPEED, &speed);
if (rc == 0) {
result->value = speed;
}
break;
}
case OCS_XPORT_IS_SUPPORTED_LINK_SPEED: {
uint32_t speed;
uint32_t link_module_type;
ocs_assert(result, -1);
speed = result->value;
rc = ocs_hw_get(&ocs->hw, OCS_HW_LINK_MODULE_TYPE, &link_module_type);
if (rc == 0) {
switch(speed) {
case 1000: rc = (link_module_type & OCS_HW_LINK_MODULE_TYPE_1GB) != 0; break;
case 2000: rc = (link_module_type & OCS_HW_LINK_MODULE_TYPE_2GB) != 0; break;
case 4000: rc = (link_module_type & OCS_HW_LINK_MODULE_TYPE_4GB) != 0; break;
case 8000: rc = (link_module_type & OCS_HW_LINK_MODULE_TYPE_8GB) != 0; break;
case 10000: rc = (link_module_type & OCS_HW_LINK_MODULE_TYPE_10GB) != 0; break;
case 16000: rc = (link_module_type & OCS_HW_LINK_MODULE_TYPE_16GB) != 0; break;
case 32000: rc = (link_module_type & OCS_HW_LINK_MODULE_TYPE_32GB) != 0; break;
default: rc = 0; break;
}
} else {
rc = 0;
}
break;
}
case OCS_XPORT_LINK_STATISTICS:
ocs_device_lock(ocs);
ocs_memcpy((void *)result, &ocs->xport->fc_xport_stats, sizeof(ocs_xport_stats_t));
ocs_device_unlock(ocs);
break;
case OCS_XPORT_LINK_STAT_RESET: {
/* Create a semaphore to synchronize the stat reset process. */
ocs_sem_init(&(result->stats.semaphore), 0, "fc_stats_reset");
/* First reset the link stats */
if ((rc = ocs_hw_get_link_stats(&ocs->hw, 0, 1, 1, ocs_xport_link_stats_cb, result)) != 0) {
ocs_log_err(ocs, "%s: Failed to reset link statistics\n", __func__);
break;
}
/* Wait for semaphore to be signaled when the command completes */
/* TODO: Should there be a timeout on this? If so, how long? */
if (ocs_sem_p(&(result->stats.semaphore), OCS_SEM_FOREVER) != 0) {
/* Undefined failure */
ocs_log_test(ocs, "ocs_sem_p failed\n");
rc = -ENXIO;
break;
}
/* Next reset the host stats */
if ((rc = ocs_hw_get_host_stats(&ocs->hw, 1, ocs_xport_host_stats_cb, result)) != 0) {
ocs_log_err(ocs, "%s: Failed to reset host statistics\n", __func__);
break;
}
/* Wait for semaphore to be signaled when the command completes */
if (ocs_sem_p(&(result->stats.semaphore), OCS_SEM_FOREVER) != 0) {
/* Undefined failure */
ocs_log_test(ocs, "ocs_sem_p failed\n");
rc = -ENXIO;
break;
}
break;
}
case OCS_XPORT_IS_QUIESCED:
ocs_device_lock(ocs);
result->value = ocs_list_empty(&ocs->domain_list);
ocs_device_unlock(ocs);
break;
default:
rc = -1;
break;
}
return rc;
}
static void
ocs_xport_link_stats_cb(int32_t status, uint32_t num_counters, ocs_hw_link_stat_counts_t *counters, void *arg)
{
ocs_xport_stats_t *result = arg;
result->stats.link_stats.link_failure_error_count = counters[OCS_HW_LINK_STAT_LINK_FAILURE_COUNT].counter;
result->stats.link_stats.loss_of_sync_error_count = counters[OCS_HW_LINK_STAT_LOSS_OF_SYNC_COUNT].counter;
result->stats.link_stats.primitive_sequence_error_count = counters[OCS_HW_LINK_STAT_PRIMITIVE_SEQ_COUNT].counter;
result->stats.link_stats.invalid_transmission_word_error_count = counters[OCS_HW_LINK_STAT_INVALID_XMIT_WORD_COUNT].counter;
result->stats.link_stats.crc_error_count = counters[OCS_HW_LINK_STAT_CRC_COUNT].counter;
ocs_sem_v(&(result->stats.semaphore));
}
static void
ocs_xport_host_stats_cb(int32_t status, uint32_t num_counters, ocs_hw_host_stat_counts_t *counters, void *arg)
{
ocs_xport_stats_t *result = arg;
result->stats.host_stats.transmit_kbyte_count = counters[OCS_HW_HOST_STAT_TX_KBYTE_COUNT].counter;
result->stats.host_stats.receive_kbyte_count = counters[OCS_HW_HOST_STAT_RX_KBYTE_COUNT].counter;
result->stats.host_stats.transmit_frame_count = counters[OCS_HW_HOST_STAT_TX_FRAME_COUNT].counter;
result->stats.host_stats.receive_frame_count = counters[OCS_HW_HOST_STAT_RX_FRAME_COUNT].counter;
ocs_sem_v(&(result->stats.semaphore));
}
/**
* @brief Free a transport object.
*
* @par Description
* The transport object is freed.
*
* @param xport Pointer to transport object.
*
* @return None.
*/
void
ocs_xport_free(ocs_xport_t *xport)
{
ocs_t *ocs;
uint32_t i;
if (xport) {
ocs = xport->ocs;
ocs_io_pool_free(xport->io_pool);
ocs_node_free_pool(ocs);
if(mtx_initialized(&xport->io_pending_lock.lock))
ocs_lock_free(&xport->io_pending_lock);
for (i = 0; i < SLI4_MAX_FCFI; i++) {
ocs_lock_free(&xport->fcfi[i].pend_frames_lock);
}
ocs_xport_rq_threads_teardown(xport);
ocs_free(ocs, xport, sizeof(*xport));
}
}
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