diff options
Diffstat (limited to 'sys/dev/bnxt/bnxt_en/bnxt_coredump.c')
| -rw-r--r-- | sys/dev/bnxt/bnxt_en/bnxt_coredump.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/sys/dev/bnxt/bnxt_en/bnxt_coredump.c b/sys/dev/bnxt/bnxt_en/bnxt_coredump.c new file mode 100644 index 000000000000..6aafa9182883 --- /dev/null +++ b/sys/dev/bnxt/bnxt_en/bnxt_coredump.c @@ -0,0 +1,186 @@ +/*- + * Broadcom NetXtreme-C/E network driver. + * + * Copyright (c) 2026 Broadcom Inc. 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. + * + * 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. + */ + +#include <sys/cdefs.h> +#include "bnxt.h" +#include "bnxt_coredump.h" +#include "hsi_struct_def.h" + + +/* Free crash dump memory */ +void +bnxt_free_crash_dump_mem(struct bnxt_softc *softc) +{ + if (softc->fw_crash_mem) { + bnxt_free_ctx_pg_tbls(softc, softc->fw_crash_mem); + free(softc->fw_crash_mem, M_DEVBUF); + softc->fw_crash_len = 0; + softc->fw_crash_mem = NULL; + } +} + +/* Allocate crash dump memory */ +int +bnxt_alloc_crash_dump_mem(struct bnxt_softc *softc) +{ + uint32_t mem_size = 0; + int rc; + + if (!(softc->fw_dbg_cap & BNXT_FW_DBG_CAP_CRASHDUMP_HOST)) + return (0); + + rc = bnxt_hwrm_get_dump_len(softc, BNXT_DUMP_CRASH, &mem_size); + if (rc) + return (rc); + + mem_size = roundup(mem_size, 4); + + if (softc->fw_crash_mem && mem_size == softc->fw_crash_len) + return (0); + + bnxt_free_crash_dump_mem(softc); + + softc->fw_crash_mem = malloc(sizeof(*softc->fw_crash_mem), + M_DEVBUF, M_NOWAIT | M_ZERO); + if (!softc->fw_crash_mem) + return (-ENOMEM); + + rc = bnxt_alloc_ctx_pg_tbls(softc, softc->fw_crash_mem, + mem_size, 1, NULL); + if (rc) { + bnxt_free_crash_dump_mem(softc); + return (rc); + } + + softc->fw_crash_len = mem_size; + return (0); +} + +/* Copy crash data from ring memory */ +static uint32_t +bnxt_copy_crash_data(struct bnxt_ring_mem_info *rmem, void *buf, + uint32_t dump_len) +{ + uint32_t data_copied = 0; + uint32_t data_len; + int i; + + for (i = 0; i < rmem->nr_pages; i++) { + if (!rmem->pg_arr[i].idi_vaddr) + continue; + data_len = rmem->page_size; + if (data_copied + data_len > dump_len) + data_len = dump_len - data_copied; + memcpy((uint8_t *)buf + data_copied, + rmem->pg_arr[i].idi_vaddr, data_len); + data_copied += data_len; + if (data_copied >= dump_len) + break; + } + return (data_copied); +} + +/* Copy crash dump from DDR memory */ +static int +bnxt_copy_crash_dump(struct bnxt_softc *softc, void *buf, uint32_t dump_len) +{ + struct bnxt_ring_mem_info *rmem; + uint32_t offset = 0; + + if (!softc->fw_crash_mem) + return (-ENOENT); + + rmem = &softc->fw_crash_mem->ring_mem; + + if (rmem->depth > 1) { + int i; + + for (i = 0; i < rmem->nr_pages; i++) { + struct bnxt_ctx_pg_info *pg_tbl; + + pg_tbl = softc->fw_crash_mem->ctx_pg_tbl[i]; + if (!pg_tbl) + continue; + offset += bnxt_copy_crash_data(&pg_tbl->ring_mem, + (uint8_t *)buf + offset, + dump_len - offset); + if (offset >= dump_len) + break; + } + } else { + bnxt_copy_crash_data(rmem, buf, dump_len); + } + + return (0); +} + +/* Check if crash dump is available */ +static bool +bnxt_crash_dump_avail(struct bnxt_softc *softc) +{ + uint32_t sig = 0; + + /* First 4 bytes(signature) of crash dump is always non-zero */ + bnxt_copy_crash_dump(softc, &sig, sizeof(uint32_t)); + return (!!sig); +} + +/* Get coredump */ +int +bnxt_get_coredump(struct bnxt_softc *softc, uint16_t dump_type, void *buf, + uint32_t *dump_len) +{ + if (dump_type == BNXT_DUMP_CRASH && + softc->fw_dbg_cap & BNXT_FW_DBG_CAP_CRASHDUMP_HOST) { + return (bnxt_copy_crash_dump(softc, buf, *dump_len)); + } else { + /* Other dump types not implemented yet */ + return (-EOPNOTSUPP); + } +} + +/* Get coredump length */ +uint32_t +bnxt_get_coredump_length(struct bnxt_softc *softc, uint16_t dump_type) +{ + uint32_t len = 0; + + if (dump_type == BNXT_DUMP_CRASH && + softc->fw_dbg_cap & BNXT_FW_DBG_CAP_CRASHDUMP_HOST && + softc->fw_crash_mem) { + if (!bnxt_crash_dump_avail(softc)) + return (0); + + return (softc->fw_crash_len); + } + + if (bnxt_hwrm_get_dump_len(softc, dump_type, &len)) + return (0); + + return (len); +} |