389 lines
10 KiB
C
389 lines
10 KiB
C
/*
|
|
* Copyright (c) 2021 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.
|
|
*
|
|
*/
|
|
|
|
#include "ocs.h"
|
|
#include "ocs_gendump.h"
|
|
|
|
/* Reset all the functions associated with a bus/dev */
|
|
static int
|
|
ocs_gen_dump_reset(uint8_t bus, uint8_t dev)
|
|
{
|
|
uint32_t index = 0;
|
|
ocs_t *ocs;
|
|
int rc = 0;
|
|
|
|
while ((ocs = ocs_get_instance(index++)) != NULL) {
|
|
uint8_t ocs_bus, ocs_dev, ocs_func;
|
|
ocs_domain_t *domain;
|
|
|
|
ocs_get_bus_dev_func(ocs, &ocs_bus, &ocs_dev, &ocs_func);
|
|
|
|
if (!(ocs_bus == bus && ocs_dev == dev))
|
|
continue;
|
|
|
|
if (ocs_hw_reset(&ocs->hw, OCS_HW_RESET_FUNCTION)) {
|
|
ocs_log_test(ocs, "failed to reset port\n");
|
|
rc = -1;
|
|
continue;
|
|
}
|
|
|
|
ocs_log_debug(ocs, "successfully reset port\n");
|
|
while ((domain = ocs_list_get_head(&ocs->domain_list)) != NULL) {
|
|
ocs_log_debug(ocs, "free domain %p\n", domain);
|
|
ocs_domain_force_free(domain);
|
|
}
|
|
/* now initialize hw so user can read the dump in */
|
|
if (ocs_hw_init(&ocs->hw)) {
|
|
ocs_log_err(ocs, "failed to initialize hw\n");
|
|
rc = -1;
|
|
} else {
|
|
ocs_log_debug(ocs, "successfully initialized hw\n");
|
|
}
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
ocs_gen_dump(ocs_t *ocs)
|
|
{
|
|
uint32_t reset_required;
|
|
uint32_t dump_ready;
|
|
uint32_t ms_waited;
|
|
uint8_t bus, dev, func;
|
|
int rc = 0;
|
|
int index = 0, port_index = 0;
|
|
ocs_t *nxt_ocs;
|
|
uint8_t nxt_bus, nxt_dev, nxt_func;
|
|
uint8_t prev_port_state[OCS_MAX_HBA_PORTS] = {0,};
|
|
ocs_xport_stats_t link_status;
|
|
|
|
ocs_get_bus_dev_func(ocs, &bus, &dev, &func);
|
|
|
|
/* Drop link on all ports belongs to this HBA*/
|
|
while ((nxt_ocs = ocs_get_instance(index++)) != NULL) {
|
|
ocs_get_bus_dev_func(nxt_ocs, &nxt_bus, &nxt_dev, &nxt_func);
|
|
|
|
if (!(bus == nxt_bus && dev == nxt_dev))
|
|
continue;
|
|
|
|
if ((port_index >= OCS_MAX_HBA_PORTS))
|
|
continue;
|
|
|
|
/* Check current link status and save for future use */
|
|
if (ocs_xport_status(nxt_ocs->xport, OCS_XPORT_PORT_STATUS,
|
|
&link_status) == 0) {
|
|
if (link_status.value == OCS_XPORT_PORT_ONLINE) {
|
|
prev_port_state[port_index] = 1;
|
|
ocs_xport_control(nxt_ocs->xport,
|
|
OCS_XPORT_PORT_OFFLINE);
|
|
} else {
|
|
prev_port_state[port_index] = 0;
|
|
}
|
|
}
|
|
port_index++;
|
|
}
|
|
|
|
/* Wait until all ports have quiesced */
|
|
for (index = 0; (nxt_ocs = ocs_get_instance(index++)) != NULL; ) {
|
|
ms_waited = 0;
|
|
for (;;) {
|
|
ocs_xport_stats_t status;
|
|
|
|
ocs_xport_status(nxt_ocs->xport, OCS_XPORT_IS_QUIESCED,
|
|
&status);
|
|
if (status.value) {
|
|
ocs_log_debug(nxt_ocs, "port quiesced\n");
|
|
break;
|
|
}
|
|
|
|
ocs_msleep(10);
|
|
ms_waited += 10;
|
|
if (ms_waited > 60000) {
|
|
ocs_log_test(nxt_ocs,
|
|
"timed out waiting for port to quiesce\n");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Initiate dump */
|
|
if (ocs_hw_raise_ue(&ocs->hw, 1) == OCS_HW_RTN_SUCCESS) {
|
|
|
|
/* Wait for dump to complete */
|
|
ocs_log_debug(ocs, "Dump requested, wait for completion.\n");
|
|
|
|
dump_ready = 0;
|
|
ms_waited = 0;
|
|
while ((!dump_ready) && (ms_waited < 30000)) {
|
|
ocs_hw_get(&ocs->hw, OCS_HW_DUMP_READY, &dump_ready);
|
|
ocs_udelay(10000);
|
|
ms_waited += 10;
|
|
}
|
|
|
|
if (!dump_ready) {
|
|
ocs_log_test(ocs, "Failed to see dump after 30 secs\n");
|
|
rc = -1;
|
|
} else {
|
|
ocs_log_debug(ocs, "sucessfully generated dump\n");
|
|
}
|
|
|
|
/* now reset port */
|
|
ocs_hw_get(&ocs->hw, OCS_HW_RESET_REQUIRED, &reset_required);
|
|
ocs_log_debug(ocs, "reset required=%d\n", reset_required);
|
|
if (reset_required) {
|
|
if (ocs_gen_dump_reset(bus, dev) == 0) {
|
|
ocs_log_debug(ocs, "all devices reset\n");
|
|
} else {
|
|
ocs_log_test(ocs, "all devices NOT reset\n");
|
|
}
|
|
}
|
|
} else {
|
|
ocs_log_test(ocs, "dump request to hw failed\n");
|
|
rc = -1;
|
|
}
|
|
|
|
index = port_index = 0;
|
|
nxt_ocs = NULL;
|
|
/* Bring links on each HBA port to previous state*/
|
|
while ((nxt_ocs = ocs_get_instance(index++)) != NULL) {
|
|
ocs_get_bus_dev_func(nxt_ocs, &nxt_bus, &nxt_dev, &nxt_func);
|
|
if (port_index > OCS_MAX_HBA_PORTS) {
|
|
ocs_log_err(NULL, "port index(%d) out of boundary\n",
|
|
port_index);
|
|
rc = -1;
|
|
break;
|
|
}
|
|
if ((bus == nxt_bus) && (dev == nxt_dev) &&
|
|
prev_port_state[port_index++]) {
|
|
ocs_xport_control(nxt_ocs->xport, OCS_XPORT_PORT_ONLINE);
|
|
}
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
ocs_fdb_dump(ocs_t *ocs)
|
|
{
|
|
uint32_t dump_ready;
|
|
uint32_t ms_waited;
|
|
int rc = 0;
|
|
|
|
#define FDB 2
|
|
|
|
/* Initiate dump */
|
|
if (ocs_hw_raise_ue(&ocs->hw, FDB) == OCS_HW_RTN_SUCCESS) {
|
|
|
|
/* Wait for dump to complete */
|
|
ocs_log_debug(ocs, "Dump requested, wait for completion.\n");
|
|
|
|
dump_ready = 0;
|
|
ms_waited = 0;
|
|
while ((!(dump_ready == FDB)) && (ms_waited < 10000)) {
|
|
ocs_hw_get(&ocs->hw, OCS_HW_DUMP_READY, &dump_ready);
|
|
ocs_udelay(10000);
|
|
ms_waited += 10;
|
|
}
|
|
|
|
if (!dump_ready) {
|
|
ocs_log_err(ocs, "Failed to see dump after 10 secs\n");
|
|
return -1;
|
|
}
|
|
|
|
ocs_log_debug(ocs, "sucessfully generated dump\n");
|
|
|
|
} else {
|
|
ocs_log_err(ocs, "dump request to hw failed\n");
|
|
rc = -1;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* @brief Create a Lancer dump into a memory buffer
|
|
* @par Description
|
|
* This function creates a DMA buffer to hold a Lancer dump,
|
|
* sets the dump location to point to that buffer, then calls
|
|
* ocs_gen_dump to cause a dump to be transferred to the buffer.
|
|
* After the dump is complete it copies the dump to the provided
|
|
* user space buffer.
|
|
*
|
|
* @param ocs Pointer to ocs structure
|
|
* @param buf User space buffer in which to store the dump
|
|
* @param buflen Length of the user buffer in bytes
|
|
*
|
|
* @return Returns 0 on success, non-zero on error.
|
|
*/
|
|
int
|
|
ocs_dump_to_host(ocs_t *ocs, void *buf, uint32_t buflen)
|
|
{
|
|
int rc;
|
|
uint32_t i, num_buffers;
|
|
ocs_dma_t *dump_buffers;
|
|
uint32_t rem_bytes, offset;
|
|
|
|
if (buflen == 0) {
|
|
ocs_log_test(ocs, "zero buffer length is invalid\n");
|
|
return -1;
|
|
}
|
|
|
|
num_buffers = ((buflen + OCS_MAX_DMA_ALLOC - 1) / OCS_MAX_DMA_ALLOC);
|
|
|
|
dump_buffers = ocs_malloc(ocs, sizeof(ocs_dma_t) * num_buffers,
|
|
OCS_M_ZERO | OCS_M_NOWAIT);
|
|
if (dump_buffers == NULL) {
|
|
ocs_log_err(ocs, "Failed to dump buffers\n");
|
|
return -1;
|
|
}
|
|
|
|
/* Allocate a DMA buffers to hold the dump */
|
|
rem_bytes = buflen;
|
|
for (i = 0; i < num_buffers; i++) {
|
|
uint32_t num_bytes = MIN(rem_bytes, OCS_MAX_DMA_ALLOC);
|
|
|
|
rc = ocs_dma_alloc(ocs, &dump_buffers[i], num_bytes,
|
|
OCS_MIN_DMA_ALIGNMENT);
|
|
if (rc) {
|
|
ocs_log_err(ocs, "Failed to allocate dump buffer\n");
|
|
|
|
/* Free any previously allocated buffers */
|
|
goto free_and_return;
|
|
}
|
|
rem_bytes -= num_bytes;
|
|
}
|
|
|
|
rc = ocs_hw_set_dump_location(&ocs->hw, num_buffers, dump_buffers, 0);
|
|
if (rc) {
|
|
ocs_log_test(ocs, "ocs_hw_set_dump_location failed\n");
|
|
goto free_and_return;
|
|
}
|
|
|
|
/* Generate the dump */
|
|
rc = ocs_gen_dump(ocs);
|
|
if (rc) {
|
|
ocs_log_test(ocs, "ocs_gen_dump failed\n");
|
|
goto free_and_return;
|
|
}
|
|
|
|
/* Copy the dump from the DMA buffer into the user buffer */
|
|
offset = 0;
|
|
for (i = 0; i < num_buffers; i++) {
|
|
if (ocs_copy_to_user((uint8_t*)buf + offset,
|
|
dump_buffers[i].virt, dump_buffers[i].size)) {
|
|
ocs_log_test(ocs, "ocs_copy_to_user failed\n");
|
|
rc = -1;
|
|
}
|
|
offset += dump_buffers[i].size;
|
|
}
|
|
|
|
free_and_return:
|
|
/* Free the DMA buffer and return */
|
|
for (i = 0; i < num_buffers; i++) {
|
|
ocs_dma_free(ocs, &dump_buffers[i]);
|
|
}
|
|
ocs_free(ocs, dump_buffers, sizeof(ocs_dma_t) * num_buffers);
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
ocs_function_speciic_dump(ocs_t *ocs, void *buf, uint32_t buflen)
|
|
{
|
|
int rc;
|
|
uint32_t i, num_buffers;
|
|
ocs_dma_t *dump_buffers;
|
|
uint32_t rem_bytes, offset;
|
|
|
|
if (buflen == 0) {
|
|
ocs_log_err(ocs, "zero buffer length is invalid\n");
|
|
return -1;
|
|
}
|
|
|
|
num_buffers = ((buflen + OCS_MAX_DMA_ALLOC - 1) / OCS_MAX_DMA_ALLOC);
|
|
|
|
dump_buffers = ocs_malloc(ocs, sizeof(ocs_dma_t) * num_buffers,
|
|
OCS_M_ZERO | OCS_M_NOWAIT);
|
|
if (dump_buffers == NULL) {
|
|
ocs_log_err(ocs, "Failed to allocate dump buffers\n");
|
|
return -1;
|
|
}
|
|
|
|
/* Allocate a DMA buffers to hold the dump */
|
|
rem_bytes = buflen;
|
|
for (i = 0; i < num_buffers; i++) {
|
|
uint32_t num_bytes = MIN(rem_bytes, OCS_MAX_DMA_ALLOC);
|
|
rc = ocs_dma_alloc(ocs, &dump_buffers[i], num_bytes,
|
|
OCS_MIN_DMA_ALIGNMENT);
|
|
if (rc) {
|
|
ocs_log_err(ocs, "Failed to allocate dma buffer\n");
|
|
|
|
/* Free any previously allocated buffers */
|
|
goto free_and_return;
|
|
}
|
|
rem_bytes -= num_bytes;
|
|
}
|
|
|
|
/* register buffers for function spcific dump */
|
|
rc = ocs_hw_set_dump_location(&ocs->hw, num_buffers, dump_buffers, 1);
|
|
if (rc) {
|
|
ocs_log_err(ocs, "ocs_hw_set_dump_location failed\n");
|
|
goto free_and_return;
|
|
}
|
|
|
|
/* Invoke dump by setting fdd=1 and ip=1 in sliport_control register */
|
|
rc = ocs_fdb_dump(ocs);
|
|
if (rc) {
|
|
ocs_log_err(ocs, "ocs_gen_dump failed\n");
|
|
goto free_and_return;
|
|
}
|
|
|
|
/* Copy the dump from the DMA buffer into the user buffer */
|
|
offset = 0;
|
|
for (i = 0; i < num_buffers; i++) {
|
|
if (ocs_copy_to_user((uint8_t*)buf + offset,
|
|
dump_buffers[i].virt, dump_buffers[i].size)) {
|
|
ocs_log_err(ocs, "ocs_copy_to_user failed\n");
|
|
rc = -1;
|
|
}
|
|
offset += dump_buffers[i].size;
|
|
}
|
|
|
|
free_and_return:
|
|
/* Free the DMA buffer and return */
|
|
for (i = 0; i < num_buffers; i++) {
|
|
ocs_dma_free(ocs, &dump_buffers[i]);
|
|
}
|
|
ocs_free(ocs, dump_buffers, sizeof(ocs_dma_t) * num_buffers);
|
|
return rc;
|
|
|
|
}
|