/****************************************************************************** * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. * * GPL LICENSE SUMMARY * * Copyright(c) 2008 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH * Copyright(c) 2015 - 2017 Intel Deutschland GmbH * Copyright(c) 2018 Intel Corporation * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * The full GNU General Public License is included in this distribution * in the file called COPYING. * * Contact Information: * Intel Linux Wireless * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * * BSD LICENSE * * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH * Copyright(c) 2015 - 2017 Intel Deutschland GmbH * Copyright(c) 2018 Intel Corporation * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 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. * * Neither the name Intel Corporation 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 * 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 #include "iwl-drv.h" #include "runtime.h" #include "dbg.h" #include "debugfs.h" #include "iwl-io.h" #include "iwl-prph.h" #include "iwl-csr.h" /** * struct iwl_fw_dump_ptrs - set of pointers needed for the fw-error-dump * * @fwrt_ptr: pointer to the buffer coming from fwrt * @trans_ptr: pointer to struct %iwl_trans_dump_data which contains the * transport's data. * @trans_len: length of the valid data in trans_ptr * @fwrt_len: length of the valid data in fwrt_ptr */ struct iwl_fw_dump_ptrs { struct iwl_trans_dump_data *trans_ptr; void *fwrt_ptr; u32 fwrt_len; }; #define RADIO_REG_MAX_READ 0x2ad static void iwl_read_radio_regs(struct iwl_fw_runtime *fwrt, struct iwl_fw_error_dump_data **dump_data) { u8 *pos = (void *)(*dump_data)->data; unsigned long flags; int i; IWL_DEBUG_INFO(fwrt, "WRT radio registers dump\n"); if (!iwl_trans_grab_nic_access(fwrt->trans, &flags)) return; (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RADIO_REG); (*dump_data)->len = cpu_to_le32(RADIO_REG_MAX_READ); for (i = 0; i < RADIO_REG_MAX_READ; i++) { u32 rd_cmd = RADIO_RSP_RD_CMD; rd_cmd |= i << RADIO_RSP_ADDR_POS; iwl_write_prph_no_grab(fwrt->trans, RSP_RADIO_CMD, rd_cmd); *pos = (u8)iwl_read_prph_no_grab(fwrt->trans, RSP_RADIO_RDDAT); pos++; } *dump_data = iwl_fw_error_next_data(*dump_data); iwl_trans_release_nic_access(fwrt->trans, &flags); } static void iwl_fwrt_dump_rxf(struct iwl_fw_runtime *fwrt, struct iwl_fw_error_dump_data **dump_data, int size, u32 offset, int fifo_num) { struct iwl_fw_error_dump_fifo *fifo_hdr; u32 *fifo_data; u32 fifo_len; int i; fifo_hdr = (void *)(*dump_data)->data; fifo_data = (void *)fifo_hdr->data; fifo_len = size; /* No need to try to read the data if the length is 0 */ if (fifo_len == 0) return; /* Add a TLV for the RXF */ (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF); (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr)); fifo_hdr->fifo_num = cpu_to_le32(fifo_num); fifo_hdr->available_bytes = cpu_to_le32(iwl_trans_read_prph(fwrt->trans, RXF_RD_D_SPACE + offset)); fifo_hdr->wr_ptr = cpu_to_le32(iwl_trans_read_prph(fwrt->trans, RXF_RD_WR_PTR + offset)); fifo_hdr->rd_ptr = cpu_to_le32(iwl_trans_read_prph(fwrt->trans, RXF_RD_RD_PTR + offset)); fifo_hdr->fence_ptr = cpu_to_le32(iwl_trans_read_prph(fwrt->trans, RXF_RD_FENCE_PTR + offset)); fifo_hdr->fence_mode = cpu_to_le32(iwl_trans_read_prph(fwrt->trans, RXF_SET_FENCE_MODE + offset)); /* Lock fence */ iwl_trans_write_prph(fwrt->trans, RXF_SET_FENCE_MODE + offset, 0x1); /* Set fence pointer to the same place like WR pointer */ iwl_trans_write_prph(fwrt->trans, RXF_LD_WR2FENCE + offset, 0x1); /* Set fence offset */ iwl_trans_write_prph(fwrt->trans, RXF_LD_FENCE_OFFSET_ADDR + offset, 0x0); /* Read FIFO */ fifo_len /= sizeof(u32); /* Size in DWORDS */ for (i = 0; i < fifo_len; i++) fifo_data[i] = iwl_trans_read_prph(fwrt->trans, RXF_FIFO_RD_FENCE_INC + offset); *dump_data = iwl_fw_error_next_data(*dump_data); } static void iwl_fwrt_dump_txf(struct iwl_fw_runtime *fwrt, struct iwl_fw_error_dump_data **dump_data, int size, u32 offset, int fifo_num) { struct iwl_fw_error_dump_fifo *fifo_hdr; u32 *fifo_data; u32 fifo_len; int i; fifo_hdr = (void *)(*dump_data)->data; fifo_data = (void *)fifo_hdr->data; fifo_len = size; /* No need to try to read the data if the length is 0 */ if (fifo_len == 0) return; /* Add a TLV for the FIFO */ (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXF); (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr)); fifo_hdr->fifo_num = cpu_to_le32(fifo_num); fifo_hdr->available_bytes = cpu_to_le32(iwl_trans_read_prph(fwrt->trans, TXF_FIFO_ITEM_CNT + offset)); fifo_hdr->wr_ptr = cpu_to_le32(iwl_trans_read_prph(fwrt->trans, TXF_WR_PTR + offset)); fifo_hdr->rd_ptr = cpu_to_le32(iwl_trans_read_prph(fwrt->trans, TXF_RD_PTR + offset)); fifo_hdr->fence_ptr = cpu_to_le32(iwl_trans_read_prph(fwrt->trans, TXF_FENCE_PTR + offset)); fifo_hdr->fence_mode = cpu_to_le32(iwl_trans_read_prph(fwrt->trans, TXF_LOCK_FENCE + offset)); /* Set the TXF_READ_MODIFY_ADDR to TXF_WR_PTR */ iwl_trans_write_prph(fwrt->trans, TXF_READ_MODIFY_ADDR + offset, TXF_WR_PTR + offset); /* Dummy-read to advance the read pointer to the head */ iwl_trans_read_prph(fwrt->trans, TXF_READ_MODIFY_DATA + offset); /* Read FIFO */ fifo_len /= sizeof(u32); /* Size in DWORDS */ for (i = 0; i < fifo_len; i++) fifo_data[i] = iwl_trans_read_prph(fwrt->trans, TXF_READ_MODIFY_DATA + offset); *dump_data = iwl_fw_error_next_data(*dump_data); } static void iwl_fw_dump_rxf(struct iwl_fw_runtime *fwrt, struct iwl_fw_error_dump_data **dump_data) { struct iwl_fwrt_shared_mem_cfg *cfg = &fwrt->smem_cfg; unsigned long flags; IWL_DEBUG_INFO(fwrt, "WRT RX FIFO dump\n"); if (!iwl_trans_grab_nic_access(fwrt->trans, &flags)) return; if (iwl_fw_dbg_type_on(fwrt, IWL_FW_ERROR_DUMP_RXF)) { /* Pull RXF1 */ iwl_fwrt_dump_rxf(fwrt, dump_data, cfg->lmac[0].rxfifo1_size, 0, 0); /* Pull RXF2 */ iwl_fwrt_dump_rxf(fwrt, dump_data, cfg->rxfifo2_size, RXF_DIFF_FROM_PREV, 1); /* Pull LMAC2 RXF1 */ if (fwrt->smem_cfg.num_lmacs > 1) iwl_fwrt_dump_rxf(fwrt, dump_data, cfg->lmac[1].rxfifo1_size, LMAC2_PRPH_OFFSET, 2); } iwl_trans_release_nic_access(fwrt->trans, &flags); } static void iwl_fw_dump_txf(struct iwl_fw_runtime *fwrt, struct iwl_fw_error_dump_data **dump_data) { struct iwl_fw_error_dump_fifo *fifo_hdr; struct iwl_fwrt_shared_mem_cfg *cfg = &fwrt->smem_cfg; u32 *fifo_data; u32 fifo_len; unsigned long flags; int i, j; IWL_DEBUG_INFO(fwrt, "WRT TX FIFO dump\n"); if (!iwl_trans_grab_nic_access(fwrt->trans, &flags)) return; if (iwl_fw_dbg_type_on(fwrt, IWL_FW_ERROR_DUMP_TXF)) { /* Pull TXF data from LMAC1 */ for (i = 0; i < fwrt->smem_cfg.num_txfifo_entries; i++) { /* Mark the number of TXF we're pulling now */ iwl_trans_write_prph(fwrt->trans, TXF_LARC_NUM, i); iwl_fwrt_dump_txf(fwrt, dump_data, cfg->lmac[0].txfifo_size[i], 0, i); } /* Pull TXF data from LMAC2 */ if (fwrt->smem_cfg.num_lmacs > 1) { for (i = 0; i < fwrt->smem_cfg.num_txfifo_entries; i++) { /* Mark the number of TXF we're pulling now */ iwl_trans_write_prph(fwrt->trans, TXF_LARC_NUM + LMAC2_PRPH_OFFSET, i); iwl_fwrt_dump_txf(fwrt, dump_data, cfg->lmac[1].txfifo_size[i], LMAC2_PRPH_OFFSET, i + cfg->num_txfifo_entries); } } } if (iwl_fw_dbg_type_on(fwrt, IWL_FW_ERROR_DUMP_INTERNAL_TXF) && fw_has_capa(&fwrt->fw->ucode_capa, IWL_UCODE_TLV_CAPA_EXTEND_SHARED_MEM_CFG)) { /* Pull UMAC internal TXF data from all TXFs */ for (i = 0; i < ARRAY_SIZE(fwrt->smem_cfg.internal_txfifo_size); i++) { fifo_hdr = (void *)(*dump_data)->data; fifo_data = (void *)fifo_hdr->data; fifo_len = fwrt->smem_cfg.internal_txfifo_size[i]; /* No need to try to read the data if the length is 0 */ if (fifo_len == 0) continue; /* Add a TLV for the internal FIFOs */ (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_INTERNAL_TXF); (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr)); fifo_hdr->fifo_num = cpu_to_le32(i); /* Mark the number of TXF we're pulling now */ iwl_trans_write_prph(fwrt->trans, TXF_CPU2_NUM, i + fwrt->smem_cfg.num_txfifo_entries); fifo_hdr->available_bytes = cpu_to_le32(iwl_trans_read_prph(fwrt->trans, TXF_CPU2_FIFO_ITEM_CNT)); fifo_hdr->wr_ptr = cpu_to_le32(iwl_trans_read_prph(fwrt->trans, TXF_CPU2_WR_PTR)); fifo_hdr->rd_ptr = cpu_to_le32(iwl_trans_read_prph(fwrt->trans, TXF_CPU2_RD_PTR)); fifo_hdr->fence_ptr = cpu_to_le32(iwl_trans_read_prph(fwrt->trans, TXF_CPU2_FENCE_PTR)); fifo_hdr->fence_mode = cpu_to_le32(iwl_trans_read_prph(fwrt->trans, TXF_CPU2_LOCK_FENCE)); /* Set TXF_CPU2_READ_MODIFY_ADDR to TXF_CPU2_WR_PTR */ iwl_trans_write_prph(fwrt->trans, TXF_CPU2_READ_MODIFY_ADDR, TXF_CPU2_WR_PTR); /* Dummy-read to advance the read pointer to head */ iwl_trans_read_prph(fwrt->trans, TXF_CPU2_READ_MODIFY_DATA); /* Read FIFO */ fifo_len /= sizeof(u32); /* Size in DWORDS */ for (j = 0; j < fifo_len; j++) fifo_data[j] = iwl_trans_read_prph(fwrt->trans, TXF_CPU2_READ_MODIFY_DATA); *dump_data = iwl_fw_error_next_data(*dump_data); } } iwl_trans_release_nic_access(fwrt->trans, &flags); } #define IWL8260_ICCM_OFFSET 0x44000 /* Only for B-step */ #define IWL8260_ICCM_LEN 0xC000 /* Only for B-step */ struct iwl_prph_range { u32 start, end; }; static const struct iwl_prph_range iwl_prph_dump_addr_comm[] = { { .start = 0x00a00000, .end = 0x00a00000 }, { .start = 0x00a0000c, .end = 0x00a00024 }, { .start = 0x00a0002c, .end = 0x00a0003c }, { .start = 0x00a00410, .end = 0x00a00418 }, { .start = 0x00a00420, .end = 0x00a00420 }, { .start = 0x00a00428, .end = 0x00a00428 }, { .start = 0x00a00430, .end = 0x00a0043c }, { .start = 0x00a00444, .end = 0x00a00444 }, { .start = 0x00a004c0, .end = 0x00a004cc }, { .start = 0x00a004d8, .end = 0x00a004d8 }, { .start = 0x00a004e0, .end = 0x00a004f0 }, { .start = 0x00a00840, .end = 0x00a00840 }, { .start = 0x00a00850, .end = 0x00a00858 }, { .start = 0x00a01004, .end = 0x00a01008 }, { .start = 0x00a01010, .end = 0x00a01010 }, { .start = 0x00a01018, .end = 0x00a01018 }, { .start = 0x00a01024, .end = 0x00a01024 }, { .start = 0x00a0102c, .end = 0x00a01034 }, { .start = 0x00a0103c, .end = 0x00a01040 }, { .start = 0x00a01048, .end = 0x00a01094 }, { .start = 0x00a01c00, .end = 0x00a01c20 }, { .start = 0x00a01c58, .end = 0x00a01c58 }, { .start = 0x00a01c7c, .end = 0x00a01c7c }, { .start = 0x00a01c28, .end = 0x00a01c54 }, { .start = 0x00a01c5c, .end = 0x00a01c5c }, { .start = 0x00a01c60, .end = 0x00a01cdc }, { .start = 0x00a01ce0, .end = 0x00a01d0c }, { .start = 0x00a01d18, .end = 0x00a01d20 }, { .start = 0x00a01d2c, .end = 0x00a01d30 }, { .start = 0x00a01d40, .end = 0x00a01d5c }, { .start = 0x00a01d80, .end = 0x00a01d80 }, { .start = 0x00a01d98, .end = 0x00a01d9c }, { .start = 0x00a01da8, .end = 0x00a01da8 }, { .start = 0x00a01db8, .end = 0x00a01df4 }, { .start = 0x00a01dc0, .end = 0x00a01dfc }, { .start = 0x00a01e00, .end = 0x00a01e2c }, { .start = 0x00a01e40, .end = 0x00a01e60 }, { .start = 0x00a01e68, .end = 0x00a01e6c }, { .start = 0x00a01e74, .end = 0x00a01e74 }, { .start = 0x00a01e84, .end = 0x00a01e90 }, { .start = 0x00a01e9c, .end = 0x00a01ec4 }, { .start = 0x00a01ed0, .end = 0x00a01ee0 }, { .start = 0x00a01f00, .end = 0x00a01f1c }, { .start = 0x00a01f44, .end = 0x00a01ffc }, { .start = 0x00a02000, .end = 0x00a02048 }, { .start = 0x00a02068, .end = 0x00a020f0 }, { .start = 0x00a02100, .end = 0x00a02118 }, { .start = 0x00a02140, .end = 0x00a0214c }, { .start = 0x00a02168, .end = 0x00a0218c }, { .start = 0x00a021c0, .end = 0x00a021c0 }, { .start = 0x00a02400, .end = 0x00a02410 }, { .start = 0x00a02418, .end = 0x00a02420 }, { .start = 0x00a02428, .end = 0x00a0242c }, { .start = 0x00a02434, .end = 0x00a02434 }, { .start = 0x00a02440, .end = 0x00a02460 }, { .start = 0x00a02468, .end = 0x00a024b0 }, { .start = 0x00a024c8, .end = 0x00a024cc }, { .start = 0x00a02500, .end = 0x00a02504 }, { .start = 0x00a0250c, .end = 0x00a02510 }, { .start = 0x00a02540, .end = 0x00a02554 }, { .start = 0x00a02580, .end = 0x00a025f4 }, { .start = 0x00a02600, .end = 0x00a0260c }, { .start = 0x00a02648, .end = 0x00a02650 }, { .start = 0x00a02680, .end = 0x00a02680 }, { .start = 0x00a026c0, .end = 0x00a026d0 }, { .start = 0x00a02700, .end = 0x00a0270c }, { .start = 0x00a02804, .end = 0x00a02804 }, { .start = 0x00a02818, .end = 0x00a0281c }, { .start = 0x00a02c00, .end = 0x00a02db4 }, { .start = 0x00a02df4, .end = 0x00a02fb0 }, { .start = 0x00a03000, .end = 0x00a03014 }, { .start = 0x00a0301c, .end = 0x00a0302c }, { .start = 0x00a03034, .end = 0x00a03038 }, { .start = 0x00a03040, .end = 0x00a03048 }, { .start = 0x00a03060, .end = 0x00a03068 }, { .start = 0x00a03070, .end = 0x00a03074 }, { .start = 0x00a0307c, .end = 0x00a0307c }, { .start = 0x00a03080, .end = 0x00a03084 }, { .start = 0x00a0308c, .end = 0x00a03090 }, { .start = 0x00a03098, .end = 0x00a03098 }, { .start = 0x00a030a0, .end = 0x00a030a0 }, { .start = 0x00a030a8, .end = 0x00a030b4 }, { .start = 0x00a030bc, .end = 0x00a030bc }, { .start = 0x00a030c0, .end = 0x00a0312c }, { .start = 0x00a03c00, .end = 0x00a03c5c }, { .start = 0x00a04400, .end = 0x00a04454 }, { .start = 0x00a04460, .end = 0x00a04474 }, { .start = 0x00a044c0, .end = 0x00a044ec }, { .start = 0x00a04500, .end = 0x00a04504 }, { .start = 0x00a04510, .end = 0x00a04538 }, { .start = 0x00a04540, .end = 0x00a04548 }, { .start = 0x00a04560, .end = 0x00a0457c }, { .start = 0x00a04590, .end = 0x00a04598 }, { .start = 0x00a045c0, .end = 0x00a045f4 }, }; static const struct iwl_prph_range iwl_prph_dump_addr_9000[] = { { .start = 0x00a05c00, .end = 0x00a05c18 }, { .start = 0x00a05400, .end = 0x00a056e8 }, { .start = 0x00a08000, .end = 0x00a098bc }, { .start = 0x00a02400, .end = 0x00a02758 }, }; static void iwl_read_prph_block(struct iwl_trans *trans, u32 start, u32 len_bytes, __le32 *data) { u32 i; for (i = 0; i < len_bytes; i += 4) *data++ = cpu_to_le32(iwl_read_prph_no_grab(trans, start + i)); } static void iwl_dump_prph(struct iwl_trans *trans, struct iwl_fw_error_dump_data **data, const struct iwl_prph_range *iwl_prph_dump_addr, u32 range_len) { struct iwl_fw_error_dump_prph *prph; unsigned long flags; u32 i; IWL_DEBUG_INFO(trans, "WRT PRPH dump\n"); if (!iwl_trans_grab_nic_access(trans, &flags)) return; for (i = 0; i < range_len; i++) { /* The range includes both boundaries */ int num_bytes_in_chunk = iwl_prph_dump_addr[i].end - iwl_prph_dump_addr[i].start + 4; (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_PRPH); (*data)->len = cpu_to_le32(sizeof(*prph) + num_bytes_in_chunk); prph = (void *)(*data)->data; prph->prph_start = cpu_to_le32(iwl_prph_dump_addr[i].start); iwl_read_prph_block(trans, iwl_prph_dump_addr[i].start, /* our range is inclusive, hence + 4 */ iwl_prph_dump_addr[i].end - iwl_prph_dump_addr[i].start + 4, (void *)prph->data); *data = iwl_fw_error_next_data(*data); } iwl_trans_release_nic_access(trans, &flags); } /* * alloc_sgtable - allocates scallerlist table in the given size, * fills it with pages and returns it * @size: the size (in bytes) of the table */ static struct scatterlist *alloc_sgtable(int size) { int alloc_size, nents, i; struct page *new_page; struct scatterlist *iter; struct scatterlist *table; nents = DIV_ROUND_UP(size, PAGE_SIZE); table = kcalloc(nents, sizeof(*table), GFP_KERNEL); if (!table) return NULL; sg_init_table(table, nents); iter = table; for_each_sg(table, iter, sg_nents(table), i) { new_page = alloc_page(GFP_KERNEL); if (!new_page) { /* release all previous allocated pages in the table */ iter = table; for_each_sg(table, iter, sg_nents(table), i) { new_page = sg_page(iter); if (new_page) __free_page(new_page); } return NULL; } alloc_size = min_t(int, size, PAGE_SIZE); size -= PAGE_SIZE; sg_set_page(iter, new_page, alloc_size, 0); } return table; } static int iwl_fw_get_prph_len(struct iwl_fw_runtime *fwrt) { u32 prph_len = 0; int i; for (i = 0; i < ARRAY_SIZE(iwl_prph_dump_addr_comm); i++) { /* The range includes both boundaries */ int num_bytes_in_chunk = iwl_prph_dump_addr_comm[i].end - iwl_prph_dump_addr_comm[i].start + 4; prph_len += sizeof(struct iwl_fw_error_dump_data) + sizeof(struct iwl_fw_error_dump_prph) + num_bytes_in_chunk; } if (fwrt->trans->cfg->mq_rx_supported) { for (i = 0; i < ARRAY_SIZE(iwl_prph_dump_addr_9000); i++) { /* The range includes both boundaries */ int num_bytes_in_chunk = iwl_prph_dump_addr_9000[i].end - iwl_prph_dump_addr_9000[i].start + 4; prph_len += sizeof(struct iwl_fw_error_dump_data) + sizeof(struct iwl_fw_error_dump_prph) + num_bytes_in_chunk; } } return prph_len; } static void iwl_fw_dump_mem(struct iwl_fw_runtime *fwrt, struct iwl_fw_error_dump_data **dump_data, u32 len, u32 ofs, u32 type) { struct iwl_fw_error_dump_mem *dump_mem; if (!len) return; (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM); (*dump_data)->len = cpu_to_le32(len + sizeof(*dump_mem)); dump_mem = (void *)(*dump_data)->data; dump_mem->type = cpu_to_le32(type); dump_mem->offset = cpu_to_le32(ofs); iwl_trans_read_mem_bytes(fwrt->trans, ofs, dump_mem->data, len); *dump_data = iwl_fw_error_next_data(*dump_data); IWL_DEBUG_INFO(fwrt, "WRT memory dump. Type=%u\n", dump_mem->type); } static void iwl_fw_dump_named_mem(struct iwl_fw_runtime *fwrt, struct iwl_fw_error_dump_data **dump_data, u32 len, u32 ofs, u8 *name, u8 name_len) { struct iwl_fw_error_dump_named_mem *dump_mem; if (!len) return; (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM); (*dump_data)->len = cpu_to_le32(len + sizeof(*dump_mem)); dump_mem = (void *)(*dump_data)->data; dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_NAMED_MEM); dump_mem->offset = cpu_to_le32(ofs); dump_mem->name_len = name_len; memcpy(dump_mem->name, name, name_len); iwl_trans_read_mem_bytes(fwrt->trans, ofs, dump_mem->data, len); *dump_data = iwl_fw_error_next_data(*dump_data); IWL_DEBUG_INFO(fwrt, "WRT memory dump. Type=%u\n", dump_mem->type); } #define ADD_LEN(len, item_len, const_len) \ do {size_t item = item_len; len += (!!item) * const_len + item; } \ while (0) static int iwl_fw_rxf_len(struct iwl_fw_runtime *fwrt, struct iwl_fwrt_shared_mem_cfg *mem_cfg) { size_t hdr_len = sizeof(struct iwl_fw_error_dump_data) + sizeof(struct iwl_fw_error_dump_fifo); u32 fifo_len = 0; int i; if (!iwl_fw_dbg_type_on(fwrt, IWL_FW_ERROR_DUMP_RXF)) return 0; /* Count RXF2 size */ ADD_LEN(fifo_len, mem_cfg->rxfifo2_size, hdr_len); /* Count RXF1 sizes */ for (i = 0; i < mem_cfg->num_lmacs; i++) ADD_LEN(fifo_len, mem_cfg->lmac[i].rxfifo1_size, hdr_len); return fifo_len; } static int iwl_fw_txf_len(struct iwl_fw_runtime *fwrt, struct iwl_fwrt_shared_mem_cfg *mem_cfg) { size_t hdr_len = sizeof(struct iwl_fw_error_dump_data) + sizeof(struct iwl_fw_error_dump_fifo); u32 fifo_len = 0; int i; if (!iwl_fw_dbg_type_on(fwrt, IWL_FW_ERROR_DUMP_TXF)) goto dump_internal_txf; /* Count TXF sizes */ for (i = 0; i < mem_cfg->num_lmacs; i++) { int j; for (j = 0; j < mem_cfg->num_txfifo_entries; j++) ADD_LEN(fifo_len, mem_cfg->lmac[i].txfifo_size[j], hdr_len); } dump_internal_txf: if (!(iwl_fw_dbg_type_on(fwrt, IWL_FW_ERROR_DUMP_INTERNAL_TXF) && fw_has_capa(&fwrt->fw->ucode_capa, IWL_UCODE_TLV_CAPA_EXTEND_SHARED_MEM_CFG))) goto out; for (i = 0; i < ARRAY_SIZE(mem_cfg->internal_txfifo_size); i++) ADD_LEN(fifo_len, mem_cfg->internal_txfifo_size[i], hdr_len); out: return fifo_len; } static void iwl_dump_paging(struct iwl_fw_runtime *fwrt, struct iwl_fw_error_dump_data **data) { int i; IWL_DEBUG_INFO(fwrt, "WRT paging dump\n"); for (i = 1; i < fwrt->num_of_paging_blk + 1; i++) { struct iwl_fw_error_dump_paging *paging; struct page *pages = fwrt->fw_paging_db[i].fw_paging_block; dma_addr_t addr = fwrt->fw_paging_db[i].fw_paging_phys; (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_PAGING); (*data)->len = cpu_to_le32(sizeof(*paging) + PAGING_BLOCK_SIZE); paging = (void *)(*data)->data; paging->index = cpu_to_le32(i); dma_sync_single_for_cpu(fwrt->trans->dev, addr, PAGING_BLOCK_SIZE, DMA_BIDIRECTIONAL); memcpy(paging->data, page_address(pages), PAGING_BLOCK_SIZE); (*data) = iwl_fw_error_next_data(*data); } } static struct iwl_fw_error_dump_file * _iwl_fw_error_dump(struct iwl_fw_runtime *fwrt, struct iwl_fw_dump_ptrs *fw_error_dump) { struct iwl_fw_error_dump_file *dump_file; struct iwl_fw_error_dump_data *dump_data; struct iwl_fw_error_dump_info *dump_info; struct iwl_fw_error_dump_smem_cfg *dump_smem_cfg; struct iwl_fw_error_dump_trigger_desc *dump_trig; u32 sram_len, sram_ofs; const struct iwl_fw_dbg_mem_seg_tlv *fw_mem = fwrt->fw->dbg.mem_tlv; struct iwl_fwrt_shared_mem_cfg *mem_cfg = &fwrt->smem_cfg; u32 file_len, fifo_len = 0, prph_len = 0, radio_len = 0; u32 smem_len = fwrt->fw->dbg.n_mem_tlv ? 0 : fwrt->trans->cfg->smem_len; u32 sram2_len = fwrt->fw->dbg.n_mem_tlv ? 0 : fwrt->trans->cfg->dccm2_len; int i; /* SRAM - include stack CCM if driver knows the values for it */ if (!fwrt->trans->cfg->dccm_offset || !fwrt->trans->cfg->dccm_len) { const struct fw_img *img; img = &fwrt->fw->img[fwrt->cur_fw_img]; sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset; sram_len = img->sec[IWL_UCODE_SECTION_DATA].len; } else { sram_ofs = fwrt->trans->cfg->dccm_offset; sram_len = fwrt->trans->cfg->dccm_len; } /* reading RXF/TXF sizes */ if (test_bit(STATUS_FW_ERROR, &fwrt->trans->status)) { fifo_len = iwl_fw_rxf_len(fwrt, mem_cfg); fifo_len += iwl_fw_txf_len(fwrt, mem_cfg); /* Make room for PRPH registers */ if (!fwrt->trans->cfg->gen2 && iwl_fw_dbg_type_on(fwrt, IWL_FW_ERROR_DUMP_PRPH)) prph_len += iwl_fw_get_prph_len(fwrt); if (fwrt->trans->cfg->device_family == IWL_DEVICE_FAMILY_7000 && iwl_fw_dbg_type_on(fwrt, IWL_FW_ERROR_DUMP_RADIO_REG)) radio_len = sizeof(*dump_data) + RADIO_REG_MAX_READ; } file_len = sizeof(*dump_file) + fifo_len + prph_len + radio_len; if (iwl_fw_dbg_type_on(fwrt, IWL_FW_ERROR_DUMP_DEV_FW_INFO)) file_len += sizeof(*dump_data) + sizeof(*dump_info); if (iwl_fw_dbg_type_on(fwrt, IWL_FW_ERROR_DUMP_MEM_CFG)) file_len += sizeof(*dump_data) + sizeof(*dump_smem_cfg); if (iwl_fw_dbg_type_on(fwrt, IWL_FW_ERROR_DUMP_MEM)) { size_t hdr_len = sizeof(*dump_data) + sizeof(struct iwl_fw_error_dump_mem); /* Dump SRAM only if no mem_tlvs */ if (!fwrt->fw->dbg.n_mem_tlv) ADD_LEN(file_len, sram_len, hdr_len); /* Make room for all mem types that exist */ ADD_LEN(file_len, smem_len, hdr_len); ADD_LEN(file_len, sram2_len, hdr_len); for (i = 0; i < fwrt->fw->dbg.n_mem_tlv; i++) ADD_LEN(file_len, le32_to_cpu(fw_mem[i].len), hdr_len); } /* Make room for fw's virtual image pages, if it exists */ if (iwl_fw_dbg_is_paging_enabled(fwrt)) file_len += fwrt->num_of_paging_blk * (sizeof(*dump_data) + sizeof(struct iwl_fw_error_dump_paging) + PAGING_BLOCK_SIZE); if (iwl_fw_dbg_is_d3_debug_enabled(fwrt) && fwrt->dump.d3_debug_data) { file_len += sizeof(*dump_data) + fwrt->trans->cfg->d3_debug_data_length * 2; } /* If we only want a monitor dump, reset the file length */ if (fwrt->dump.monitor_only) { file_len = sizeof(*dump_file) + sizeof(*dump_data) * 2 + sizeof(*dump_info) + sizeof(*dump_smem_cfg); } if (iwl_fw_dbg_type_on(fwrt, IWL_FW_ERROR_DUMP_ERROR_INFO) && fwrt->dump.desc) file_len += sizeof(*dump_data) + sizeof(*dump_trig) + fwrt->dump.desc->len; dump_file = vzalloc(file_len); if (!dump_file) return NULL; fw_error_dump->fwrt_ptr = dump_file; dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER); dump_data = (void *)dump_file->data; if (iwl_fw_dbg_type_on(fwrt, IWL_FW_ERROR_DUMP_DEV_FW_INFO)) { dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO); dump_data->len = cpu_to_le32(sizeof(*dump_info)); dump_info = (void *)dump_data->data; dump_info->device_family = fwrt->trans->cfg->device_family == IWL_DEVICE_FAMILY_7000 ? cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) : cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8); dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(fwrt->trans->hw_rev)); memcpy(dump_info->fw_human_readable, fwrt->fw->human_readable, sizeof(dump_info->fw_human_readable)); strncpy(dump_info->dev_human_readable, fwrt->trans->cfg->name, sizeof(dump_info->dev_human_readable) - 1); strncpy(dump_info->bus_human_readable, fwrt->dev->bus->name, sizeof(dump_info->bus_human_readable) - 1); dump_info->rt_status = cpu_to_le32(fwrt->dump.rt_status); dump_data = iwl_fw_error_next_data(dump_data); } if (iwl_fw_dbg_type_on(fwrt, IWL_FW_ERROR_DUMP_MEM_CFG)) { /* Dump shared memory configuration */ dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_CFG); dump_data->len = cpu_to_le32(sizeof(*dump_smem_cfg)); dump_smem_cfg = (void *)dump_data->data; dump_smem_cfg->num_lmacs = cpu_to_le32(mem_cfg->num_lmacs); dump_smem_cfg->num_txfifo_entries = cpu_to_le32(mem_cfg->num_txfifo_entries); for (i = 0; i < MAX_NUM_LMAC; i++) { int j; u32 *txf_size = mem_cfg->lmac[i].txfifo_size; for (j = 0; j < TX_FIFO_MAX_NUM; j++) dump_smem_cfg->lmac[i].txfifo_size[j] = cpu_to_le32(txf_size[j]); dump_smem_cfg->lmac[i].rxfifo1_size = cpu_to_le32(mem_cfg->lmac[i].rxfifo1_size); } dump_smem_cfg->rxfifo2_size = cpu_to_le32(mem_cfg->rxfifo2_size); dump_smem_cfg->internal_txfifo_addr = cpu_to_le32(mem_cfg->internal_txfifo_addr); for (i = 0; i < TX_FIFO_INTERNAL_MAX_NUM; i++) { dump_smem_cfg->internal_txfifo_size[i] = cpu_to_le32(mem_cfg->internal_txfifo_size[i]); } dump_data = iwl_fw_error_next_data(dump_data); } /* We only dump the FIFOs if the FW is in error state */ if (fifo_len) { iwl_fw_dump_rxf(fwrt, &dump_data); iwl_fw_dump_txf(fwrt, &dump_data); if (radio_len) iwl_read_radio_regs(fwrt, &dump_data); } if (iwl_fw_dbg_type_on(fwrt, IWL_FW_ERROR_DUMP_ERROR_INFO) && fwrt->dump.desc) { dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_ERROR_INFO); dump_data->len = cpu_to_le32(sizeof(*dump_trig) + fwrt->dump.desc->len); dump_trig = (void *)dump_data->data; memcpy(dump_trig, &fwrt->dump.desc->trig_desc, sizeof(*dump_trig) + fwrt->dump.desc->len); dump_data = iwl_fw_error_next_data(dump_data); } /* In case we only want monitor dump, skip to dump trasport data */ if (fwrt->dump.monitor_only) goto out; if (iwl_fw_dbg_type_on(fwrt, IWL_FW_ERROR_DUMP_MEM)) { const struct iwl_fw_dbg_mem_seg_tlv *fw_dbg_mem = fwrt->fw->dbg.mem_tlv; if (!fwrt->fw->dbg.n_mem_tlv) iwl_fw_dump_mem(fwrt, &dump_data, sram_len, sram_ofs, IWL_FW_ERROR_DUMP_MEM_SRAM); for (i = 0; i < fwrt->fw->dbg.n_mem_tlv; i++) { u32 len = le32_to_cpu(fw_dbg_mem[i].len); u32 ofs = le32_to_cpu(fw_dbg_mem[i].ofs); iwl_fw_dump_mem(fwrt, &dump_data, len, ofs, le32_to_cpu(fw_dbg_mem[i].data_type)); } iwl_fw_dump_mem(fwrt, &dump_data, smem_len, fwrt->trans->cfg->smem_offset, IWL_FW_ERROR_DUMP_MEM_SMEM); iwl_fw_dump_mem(fwrt, &dump_data, sram2_len, fwrt->trans->cfg->dccm2_offset, IWL_FW_ERROR_DUMP_MEM_SRAM); } if (iwl_fw_dbg_is_d3_debug_enabled(fwrt) && fwrt->dump.d3_debug_data) { u32 addr = fwrt->trans->cfg->d3_debug_data_base_addr; size_t data_size = fwrt->trans->cfg->d3_debug_data_length; dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_D3_DEBUG_DATA); dump_data->len = cpu_to_le32(data_size * 2); memcpy(dump_data->data, fwrt->dump.d3_debug_data, data_size); kfree(fwrt->dump.d3_debug_data); fwrt->dump.d3_debug_data = NULL; iwl_trans_read_mem_bytes(fwrt->trans, addr, dump_data->data + data_size, data_size); dump_data = iwl_fw_error_next_data(dump_data); } /* Dump fw's virtual image */ if (iwl_fw_dbg_is_paging_enabled(fwrt)) iwl_dump_paging(fwrt, &dump_data); if (prph_len) { iwl_dump_prph(fwrt->trans, &dump_data, iwl_prph_dump_addr_comm, ARRAY_SIZE(iwl_prph_dump_addr_comm)); if (fwrt->trans->cfg->mq_rx_supported) iwl_dump_prph(fwrt->trans, &dump_data, iwl_prph_dump_addr_9000, ARRAY_SIZE(iwl_prph_dump_addr_9000)); } out: dump_file->file_len = cpu_to_le32(file_len); return dump_file; } static void iwl_dump_prph_ini(struct iwl_trans *trans, struct iwl_fw_error_dump_data **data, struct iwl_fw_ini_region_cfg *reg) { struct iwl_fw_error_dump_prph *prph; unsigned long flags; u32 i, size = le32_to_cpu(reg->num_regions); IWL_DEBUG_INFO(trans, "WRT PRPH dump\n"); if (!iwl_trans_grab_nic_access(trans, &flags)) return; for (i = 0; i < size; i++) { (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_PRPH); (*data)->len = cpu_to_le32(le32_to_cpu(reg->size) + sizeof(*prph)); prph = (void *)(*data)->data; prph->prph_start = reg->start_addr[i]; prph->data[0] = cpu_to_le32(iwl_read_prph_no_grab(trans, le32_to_cpu(prph->prph_start))); *data = iwl_fw_error_next_data(*data); } iwl_trans_release_nic_access(trans, &flags); } static void iwl_dump_csr_ini(struct iwl_trans *trans, struct iwl_fw_error_dump_data **data, struct iwl_fw_ini_region_cfg *reg) { int i, num = le32_to_cpu(reg->num_regions); u32 size = le32_to_cpu(reg->size); IWL_DEBUG_INFO(trans, "WRT CSR dump\n"); for (i = 0; i < num; i++) { u32 add = le32_to_cpu(reg->start_addr[i]); __le32 *val; int j; (*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_CSR); (*data)->len = cpu_to_le32(size); val = (void *)(*data)->data; for (j = 0; j < size; j += 4) *val++ = cpu_to_le32(iwl_trans_read32(trans, j + add)); *data = iwl_fw_error_next_data(*data); } } static int iwl_fw_ini_get_trigger_len(struct iwl_fw_runtime *fwrt, struct iwl_fw_ini_trigger *trigger) { int i, num, size = 0, hdr_len = sizeof(struct iwl_fw_error_dump_data); if (!trigger || !trigger->num_regions) return 0; num = le32_to_cpu(trigger->num_regions); for (i = 0; i < num; i++) { u32 reg_id = le32_to_cpu(trigger->data[i]); struct iwl_fw_ini_region_cfg *reg; enum iwl_fw_ini_region_type type; u32 num_entries; if (WARN_ON(reg_id >= ARRAY_SIZE(fwrt->dump.active_regs))) continue; reg = fwrt->dump.active_regs[reg_id].reg; if (WARN(!reg, "Unassigned region %d\n", reg_id)) continue; type = le32_to_cpu(reg->region_type); num_entries = le32_to_cpu(reg->num_regions); switch (type) { case IWL_FW_INI_REGION_DEVICE_MEMORY: size += hdr_len + sizeof(struct iwl_fw_error_dump_named_mem) + le32_to_cpu(reg->size); break; case IWL_FW_INI_REGION_PERIPHERY_MAC: case IWL_FW_INI_REGION_PERIPHERY_PHY: case IWL_FW_INI_REGION_PERIPHERY_AUX: size += num_entries * (hdr_len + sizeof(struct iwl_fw_error_dump_prph) + sizeof(u32)); break; case IWL_FW_INI_REGION_TXF: size += iwl_fw_txf_len(fwrt, &fwrt->smem_cfg); break; case IWL_FW_INI_REGION_RXF: size += iwl_fw_rxf_len(fwrt, &fwrt->smem_cfg); break; case IWL_FW_INI_REGION_PAGING: if (!iwl_fw_dbg_is_paging_enabled(fwrt)) break; size += fwrt->num_of_paging_blk * (hdr_len + sizeof(struct iwl_fw_error_dump_paging) + PAGING_BLOCK_SIZE); break; case IWL_FW_INI_REGION_CSR: size += num_entries * (hdr_len + le32_to_cpu(reg->size)); break; case IWL_FW_INI_REGION_DRAM_BUFFER: /* Transport takes care of DRAM dumping */ case IWL_FW_INI_REGION_INTERNAL_BUFFER: case IWL_FW_INI_REGION_DRAM_IMR: /* Undefined yet */ default: break; } } return size; } static void iwl_fw_ini_dump_trigger(struct iwl_fw_runtime *fwrt, struct iwl_fw_ini_trigger *trigger, struct iwl_fw_error_dump_data **data, u32 *dump_mask) { int i, num = le32_to_cpu(trigger->num_regions); for (i = 0; i < num; i++) { u32 reg_id = le32_to_cpu(trigger->data[i]); enum iwl_fw_ini_region_type type; struct iwl_fw_ini_region_cfg *reg; if (reg_id >= ARRAY_SIZE(fwrt->dump.active_regs)) continue; reg = fwrt->dump.active_regs[reg_id].reg; /* Don't warn, get_trigger_len already warned */ if (!reg) continue; type = le32_to_cpu(reg->region_type); switch (type) { case IWL_FW_INI_REGION_DEVICE_MEMORY: if (WARN_ON(le32_to_cpu(reg->num_regions) > 1)) continue; iwl_fw_dump_named_mem(fwrt, data, le32_to_cpu(reg->size), le32_to_cpu(reg->start_addr[0]), reg->name, le32_to_cpu(reg->name_len)); break; case IWL_FW_INI_REGION_PERIPHERY_MAC: case IWL_FW_INI_REGION_PERIPHERY_PHY: case IWL_FW_INI_REGION_PERIPHERY_AUX: iwl_dump_prph_ini(fwrt->trans, data, reg); break; case IWL_FW_INI_REGION_DRAM_BUFFER: *dump_mask |= IWL_FW_ERROR_DUMP_FW_MONITOR; break; case IWL_FW_INI_REGION_PAGING: if (iwl_fw_dbg_is_paging_enabled(fwrt)) iwl_dump_paging(fwrt, data); else *dump_mask |= IWL_FW_ERROR_DUMP_PAGING; break; case IWL_FW_INI_REGION_TXF: iwl_fw_dump_txf(fwrt, data); break; case IWL_FW_INI_REGION_RXF: iwl_fw_dump_rxf(fwrt, data); break; case IWL_FW_INI_REGION_CSR: iwl_dump_csr_ini(fwrt->trans, data, reg); break; case IWL_FW_INI_REGION_DRAM_IMR: case IWL_FW_INI_REGION_INTERNAL_BUFFER: /* This is undefined yet */ default: break; } } } static struct iwl_fw_error_dump_file * _iwl_fw_error_ini_dump(struct iwl_fw_runtime *fwrt, struct iwl_fw_dump_ptrs *fw_error_dump, u32 *dump_mask) { int size, id = le32_to_cpu(fwrt->dump.desc->trig_desc.type); struct iwl_fw_error_dump_data *dump_data; struct iwl_fw_error_dump_file *dump_file; struct iwl_fw_ini_trigger *trigger, *ext; if (id == FW_DBG_TRIGGER_FW_ASSERT) id = IWL_FW_TRIGGER_ID_FW_ASSERT; else if (id == FW_DBG_TRIGGER_USER) id = IWL_FW_TRIGGER_ID_USER_TRIGGER; else if (id < FW_DBG_TRIGGER_MAX) return NULL; if (WARN_ON(id >= ARRAY_SIZE(fwrt->dump.active_trigs))) return NULL; trigger = fwrt->dump.active_trigs[id].conf; ext = fwrt->dump.active_trigs[id].conf_ext; size = sizeof(*dump_file); size += iwl_fw_ini_get_trigger_len(fwrt, trigger); size += iwl_fw_ini_get_trigger_len(fwrt, ext); if (!size) return NULL; dump_file = vzalloc(size); if (!dump_file) return NULL; fw_error_dump->fwrt_ptr = dump_file; dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER); dump_data = (void *)dump_file->data; dump_file->file_len = cpu_to_le32(size); *dump_mask = 0; if (trigger) iwl_fw_ini_dump_trigger(fwrt, trigger, &dump_data, dump_mask); if (ext) iwl_fw_ini_dump_trigger(fwrt, ext, &dump_data, dump_mask); return dump_file; } void iwl_fw_error_dump(struct iwl_fw_runtime *fwrt) { struct iwl_fw_dump_ptrs *fw_error_dump; struct iwl_fw_error_dump_file *dump_file; struct scatterlist *sg_dump_data; u32 file_len; u32 dump_mask = fwrt->fw->dbg.dump_mask; IWL_DEBUG_INFO(fwrt, "WRT dump start\n"); /* there's no point in fw dump if the bus is dead */ if (test_bit(STATUS_TRANS_DEAD, &fwrt->trans->status)) { IWL_ERR(fwrt, "Skip fw error dump since bus is dead\n"); goto out; } fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL); if (!fw_error_dump) goto out; if (fwrt->trans->ini_valid) dump_file = _iwl_fw_error_ini_dump(fwrt, fw_error_dump, &dump_mask); else dump_file = _iwl_fw_error_dump(fwrt, fw_error_dump); if (!dump_file) { kfree(fw_error_dump); goto out; } if (!fwrt->trans->ini_valid && fwrt->dump.monitor_only) dump_mask &= IWL_FW_ERROR_DUMP_FW_MONITOR; fw_error_dump->trans_ptr = iwl_trans_dump_data(fwrt->trans, dump_mask); file_len = le32_to_cpu(dump_file->file_len); fw_error_dump->fwrt_len = file_len; if (fw_error_dump->trans_ptr) { file_len += fw_error_dump->trans_ptr->len; dump_file->file_len = cpu_to_le32(file_len); } sg_dump_data = alloc_sgtable(file_len); if (sg_dump_data) { sg_pcopy_from_buffer(sg_dump_data, sg_nents(sg_dump_data), fw_error_dump->fwrt_ptr, fw_error_dump->fwrt_len, 0); if (fw_error_dump->trans_ptr) sg_pcopy_from_buffer(sg_dump_data, sg_nents(sg_dump_data), fw_error_dump->trans_ptr->data, fw_error_dump->trans_ptr->len, fw_error_dump->fwrt_len); dev_coredumpsg(fwrt->trans->dev, sg_dump_data, file_len, GFP_KERNEL); } vfree(fw_error_dump->fwrt_ptr); vfree(fw_error_dump->trans_ptr); kfree(fw_error_dump); out: iwl_fw_free_dump_desc(fwrt); clear_bit(IWL_FWRT_STATUS_DUMPING, &fwrt->status); IWL_DEBUG_INFO(fwrt, "WRT dump done\n"); } IWL_EXPORT_SYMBOL(iwl_fw_error_dump); const struct iwl_fw_dump_desc iwl_dump_desc_assert = { .trig_desc = { .type = cpu_to_le32(FW_DBG_TRIGGER_FW_ASSERT), }, }; IWL_EXPORT_SYMBOL(iwl_dump_desc_assert); void iwl_fw_assert_error_dump(struct iwl_fw_runtime *fwrt) { IWL_INFO(fwrt, "error dump due to fw assert\n"); fwrt->dump.desc = &iwl_dump_desc_assert; iwl_fw_error_dump(fwrt); } IWL_EXPORT_SYMBOL(iwl_fw_assert_error_dump); void iwl_fw_alive_error_dump(struct iwl_fw_runtime *fwrt) { struct iwl_fw_dump_desc *iwl_dump_desc_no_alive = kmalloc(sizeof(*iwl_dump_desc_no_alive), GFP_KERNEL); if (!iwl_dump_desc_no_alive) return; iwl_dump_desc_no_alive->trig_desc.type = cpu_to_le32(FW_DBG_TRIGGER_NO_ALIVE); iwl_dump_desc_no_alive->len = 0; if (WARN_ON(fwrt->dump.desc)) iwl_fw_free_dump_desc(fwrt); IWL_WARN(fwrt, "Collecting data: trigger %d fired.\n", FW_DBG_TRIGGER_NO_ALIVE); fwrt->dump.desc = iwl_dump_desc_no_alive; iwl_fw_error_dump(fwrt); clear_bit(IWL_FWRT_STATUS_WAIT_ALIVE, &fwrt->status); } IWL_EXPORT_SYMBOL(iwl_fw_alive_error_dump); int iwl_fw_dbg_collect_desc(struct iwl_fw_runtime *fwrt, const struct iwl_fw_dump_desc *desc, bool monitor_only, unsigned int delay) { /* * If the loading of the FW completed successfully, the next step is to * get the SMEM config data. Thus, if fwrt->smem_cfg.num_lmacs is non * zero, the FW was already loaded successully. If the state is "NO_FW" * in such a case - exit, since FW may be dead. Otherwise, we * can try to collect the data, since FW might just not be fully * loaded (no "ALIVE" yet), and the debug data is accessible. * * Corner case: got the FW alive but crashed before getting the SMEM * config. In such a case, due to HW access problems, we might * collect garbage. */ if (fwrt->trans->state == IWL_TRANS_NO_FW && fwrt->smem_cfg.num_lmacs) return -EIO; if (test_and_set_bit(IWL_FWRT_STATUS_DUMPING, &fwrt->status) || test_bit(IWL_FWRT_STATUS_WAIT_ALIVE, &fwrt->status)) return -EBUSY; if (WARN_ON(fwrt->dump.desc)) iwl_fw_free_dump_desc(fwrt); IWL_WARN(fwrt, "Collecting data: trigger %d fired.\n", le32_to_cpu(desc->trig_desc.type)); fwrt->dump.desc = desc; fwrt->dump.monitor_only = monitor_only; schedule_delayed_work(&fwrt->dump.wk, delay); return 0; } IWL_EXPORT_SYMBOL(iwl_fw_dbg_collect_desc); int _iwl_fw_dbg_collect(struct iwl_fw_runtime *fwrt, enum iwl_fw_dbg_trigger trig, const char *str, size_t len, struct iwl_fw_dbg_trigger_tlv *trigger) { struct iwl_fw_dump_desc *desc; unsigned int delay = 0; bool monitor_only = false; if (trigger) { u16 occurrences = le16_to_cpu(trigger->occurrences) - 1; if (!le16_to_cpu(trigger->occurrences)) return 0; if (trigger->flags & IWL_FW_DBG_FORCE_RESTART) { IWL_WARN(fwrt, "Force restart: trigger %d fired.\n", trig); iwl_force_nmi(fwrt->trans); return 0; } trigger->occurrences = cpu_to_le16(occurrences); delay = le16_to_cpu(trigger->trig_dis_ms); monitor_only = trigger->mode & IWL_FW_DBG_TRIGGER_MONITOR_ONLY; } desc = kzalloc(sizeof(*desc) + len, GFP_ATOMIC); if (!desc) return -ENOMEM; desc->len = len; desc->trig_desc.type = cpu_to_le32(trig); memcpy(desc->trig_desc.data, str, len); return iwl_fw_dbg_collect_desc(fwrt, desc, monitor_only, delay); } IWL_EXPORT_SYMBOL(_iwl_fw_dbg_collect); int iwl_fw_dbg_collect(struct iwl_fw_runtime *fwrt, u32 id, const char *str, size_t len) { struct iwl_fw_dump_desc *desc; u32 occur, delay; if (!fwrt->trans->ini_valid) return _iwl_fw_dbg_collect(fwrt, id, str, len, NULL); if (id == FW_DBG_TRIGGER_USER) id = IWL_FW_TRIGGER_ID_USER_TRIGGER; if (WARN_ON(!fwrt->dump.active_trigs[id].active)) return -EINVAL; delay = le32_to_cpu(fwrt->dump.active_trigs[id].conf->ignore_consec); occur = le32_to_cpu(fwrt->dump.active_trigs[id].conf->occurrences); if (!occur) return 0; if (le32_to_cpu(fwrt->dump.active_trigs[id].conf->force_restart)) { IWL_WARN(fwrt, "Force restart: trigger %d fired.\n", id); iwl_force_nmi(fwrt->trans); return 0; } desc = kzalloc(sizeof(*desc) + len, GFP_ATOMIC); if (!desc) return -ENOMEM; occur--; fwrt->dump.active_trigs[id].conf->occurrences = cpu_to_le32(occur); desc->len = len; desc->trig_desc.type = cpu_to_le32(id); memcpy(desc->trig_desc.data, str, len); return iwl_fw_dbg_collect_desc(fwrt, desc, true, delay); } IWL_EXPORT_SYMBOL(iwl_fw_dbg_collect); int iwl_fw_dbg_collect_trig(struct iwl_fw_runtime *fwrt, struct iwl_fw_dbg_trigger_tlv *trigger, const char *fmt, ...) { int ret, len = 0; char buf[64]; if (fwrt->trans->ini_valid) return 0; if (fmt) { va_list ap; buf[sizeof(buf) - 1] = '\0'; va_start(ap, fmt); vsnprintf(buf, sizeof(buf), fmt, ap); va_end(ap); /* check for truncation */ if (WARN_ON_ONCE(buf[sizeof(buf) - 1])) buf[sizeof(buf) - 1] = '\0'; len = strlen(buf) + 1; } ret = _iwl_fw_dbg_collect(fwrt, le32_to_cpu(trigger->id), buf, len, trigger); if (ret) return ret; return 0; } IWL_EXPORT_SYMBOL(iwl_fw_dbg_collect_trig); int iwl_fw_start_dbg_conf(struct iwl_fw_runtime *fwrt, u8 conf_id) { u8 *ptr; int ret; int i; if (WARN_ONCE(conf_id >= ARRAY_SIZE(fwrt->fw->dbg.conf_tlv), "Invalid configuration %d\n", conf_id)) return -EINVAL; /* EARLY START - firmware's configuration is hard coded */ if ((!fwrt->fw->dbg.conf_tlv[conf_id] || !fwrt->fw->dbg.conf_tlv[conf_id]->num_of_hcmds) && conf_id == FW_DBG_START_FROM_ALIVE) return 0; if (!fwrt->fw->dbg.conf_tlv[conf_id]) return -EINVAL; if (fwrt->dump.conf != FW_DBG_INVALID) IWL_WARN(fwrt, "FW already configured (%d) - re-configuring\n", fwrt->dump.conf); /* Send all HCMDs for configuring the FW debug */ ptr = (void *)&fwrt->fw->dbg.conf_tlv[conf_id]->hcmd; for (i = 0; i < fwrt->fw->dbg.conf_tlv[conf_id]->num_of_hcmds; i++) { struct iwl_fw_dbg_conf_hcmd *cmd = (void *)ptr; struct iwl_host_cmd hcmd = { .id = cmd->id, .len = { le16_to_cpu(cmd->len), }, .data = { cmd->data, }, }; ret = iwl_trans_send_cmd(fwrt->trans, &hcmd); if (ret) return ret; ptr += sizeof(*cmd); ptr += le16_to_cpu(cmd->len); } fwrt->dump.conf = conf_id; return 0; } IWL_EXPORT_SYMBOL(iwl_fw_start_dbg_conf); /* this function assumes dump_start was called beforehand and dump_end will be * called afterwards */ void iwl_fw_dbg_collect_sync(struct iwl_fw_runtime *fwrt) { struct iwl_fw_dbg_params params = {0}; if (!test_bit(IWL_FWRT_STATUS_DUMPING, &fwrt->status)) return; if (fwrt->ops && fwrt->ops->fw_running && !fwrt->ops->fw_running(fwrt->ops_ctx)) { IWL_ERR(fwrt, "Firmware not running - cannot dump error\n"); iwl_fw_free_dump_desc(fwrt); clear_bit(IWL_FWRT_STATUS_DUMPING, &fwrt->status); return; } iwl_fw_dbg_stop_recording(fwrt, ¶ms); iwl_fw_error_dump(fwrt); /* start recording again if the firmware is not crashed */ if (!test_bit(STATUS_FW_ERROR, &fwrt->trans->status) && fwrt->fw->dbg.dest_tlv) { /* wait before we collect the data till the DBGC stop */ udelay(500); iwl_fw_dbg_restart_recording(fwrt, ¶ms); } } IWL_EXPORT_SYMBOL(iwl_fw_dbg_collect_sync); void iwl_fw_error_dump_wk(struct work_struct *work) { struct iwl_fw_runtime *fwrt = container_of(work, struct iwl_fw_runtime, dump.wk.work); if (fwrt->ops && fwrt->ops->dump_start && fwrt->ops->dump_start(fwrt->ops_ctx)) return; iwl_fw_dbg_collect_sync(fwrt); if (fwrt->ops && fwrt->ops->dump_end) fwrt->ops->dump_end(fwrt->ops_ctx); } void iwl_fw_dbg_read_d3_debug_data(struct iwl_fw_runtime *fwrt) { const struct iwl_cfg *cfg = fwrt->trans->cfg; if (!iwl_fw_dbg_is_d3_debug_enabled(fwrt)) return; if (!fwrt->dump.d3_debug_data) { fwrt->dump.d3_debug_data = kmalloc(cfg->d3_debug_data_length, GFP_KERNEL); if (!fwrt->dump.d3_debug_data) { IWL_ERR(fwrt, "failed to allocate memory for D3 debug data\n"); return; } } /* if the buffer holds previous debug data it is overwritten */ iwl_trans_read_mem_bytes(fwrt->trans, cfg->d3_debug_data_base_addr, fwrt->dump.d3_debug_data, cfg->d3_debug_data_length); } IWL_EXPORT_SYMBOL(iwl_fw_dbg_read_d3_debug_data); static void iwl_fw_dbg_buffer_allocation(struct iwl_fw_runtime *fwrt, struct iwl_fw_ini_allocation_tlv *alloc) { struct iwl_trans *trans = fwrt->trans; struct iwl_continuous_record_cmd cont_rec = {}; struct iwl_buffer_allocation_cmd *cmd = (void *)&cont_rec.pad[0]; struct iwl_host_cmd hcmd = { .id = LDBG_CONFIG_CMD, .flags = CMD_ASYNC, .data[0] = &cont_rec, .len[0] = sizeof(cont_rec), }; void *virtual_addr = NULL; u32 size = le32_to_cpu(alloc->size); dma_addr_t phys_addr; cont_rec.record_mode.enable_recording = cpu_to_le16(BUFFER_ALLOCATION); if (!trans->num_blocks && le32_to_cpu(alloc->buffer_location) != IWL_FW_INI_LOCATION_DRAM_PATH) return; virtual_addr = dma_alloc_coherent(fwrt->trans->dev, size, &phys_addr, GFP_KERNEL); /* TODO: alloc fragments if needed */ if (!virtual_addr) IWL_ERR(fwrt, "Failed to allocate debug memory\n"); if (WARN_ON_ONCE(trans->num_blocks == ARRAY_SIZE(trans->fw_mon))) return; trans->fw_mon[trans->num_blocks].block = virtual_addr; trans->fw_mon[trans->num_blocks].physical = phys_addr; trans->fw_mon[trans->num_blocks].size = size; trans->num_blocks++; IWL_DEBUG_FW(trans, "Allocated debug block of size %d\n", size); /* First block is assigned via registers / context info */ if (trans->num_blocks == 1) return; cmd->num_frags = cpu_to_le32(1); cmd->fragments[0].address = cpu_to_le64(phys_addr); cmd->fragments[0].size = alloc->size; cmd->allocation_id = alloc->allocation_id; cmd->buffer_location = alloc->buffer_location; iwl_trans_send_cmd(trans, &hcmd); } static void iwl_fw_dbg_send_hcmd(struct iwl_fw_runtime *fwrt, struct iwl_ucode_tlv *tlv) { struct iwl_fw_ini_hcmd_tlv *hcmd_tlv = (void *)&tlv->data[0]; struct iwl_fw_ini_hcmd *data = &hcmd_tlv->hcmd; u16 len = le32_to_cpu(tlv->length) - sizeof(*hcmd_tlv); struct iwl_host_cmd hcmd = { .id = WIDE_ID(data->group, data->id), .len = { len, }, .data = { data->data, }, }; iwl_trans_send_cmd(fwrt->trans, &hcmd); } static void iwl_fw_dbg_update_regions(struct iwl_fw_runtime *fwrt, struct iwl_fw_ini_region_tlv *tlv, bool ext, enum iwl_fw_ini_apply_point pnt) { void *iter = (void *)tlv->region_config; int i, size = le32_to_cpu(tlv->num_regions); for (i = 0; i < size; i++) { struct iwl_fw_ini_region_cfg *reg = iter; int id = le32_to_cpu(reg->region_id); struct iwl_fw_ini_active_regs *active; if (WARN(id >= ARRAY_SIZE(fwrt->dump.active_regs), "Invalid region id %d for apply point %d\n", id, pnt)) break; active = &fwrt->dump.active_regs[id]; if (ext && active->apply_point == pnt) IWL_WARN(fwrt->trans, "External region TLV overrides FW default %x\n", id); IWL_DEBUG_FW(fwrt, "%s: apply point %d, activating region ID %d\n", __func__, pnt, id); active->reg = reg; active->apply_point = pnt; if (le32_to_cpu(reg->region_type) != IWL_FW_INI_REGION_DRAM_BUFFER) iter += le32_to_cpu(reg->num_regions) * sizeof(__le32); iter += sizeof(*reg); } } static void iwl_fw_dbg_update_triggers(struct iwl_fw_runtime *fwrt, struct iwl_fw_ini_trigger_tlv *tlv, bool ext, enum iwl_fw_ini_apply_point apply_point) { int i, size = le32_to_cpu(tlv->num_triggers); void *iter = (void *)tlv->trigger_config; for (i = 0; i < size; i++) { struct iwl_fw_ini_trigger *trig = iter; struct iwl_fw_ini_active_triggers *active; int id = le32_to_cpu(trig->trigger_id); u32 num; if (WARN_ON(id >= ARRAY_SIZE(fwrt->dump.active_trigs))) break; active = &fwrt->dump.active_trigs[id]; if (active->apply_point != apply_point) { active->conf = NULL; active->conf_ext = NULL; } num = le32_to_cpu(trig->num_regions); if (ext && active->apply_point == apply_point) { num += le32_to_cpu(active->conf->num_regions); if (trig->ignore_default) { active->conf_ext = active->conf; active->conf = trig; } else { active->conf_ext = trig; } } else { active->conf = trig; } /* Since zero means infinity - just set to -1 */ if (!le32_to_cpu(trig->occurrences)) trig->occurrences = cpu_to_le32(-1); if (!le32_to_cpu(trig->ignore_consec)) trig->ignore_consec = cpu_to_le32(-1); iter += sizeof(*trig) + le32_to_cpu(trig->num_regions) * sizeof(__le32); active->active = num; active->apply_point = apply_point; } } static void _iwl_fw_dbg_apply_point(struct iwl_fw_runtime *fwrt, struct iwl_apply_point_data *data, enum iwl_fw_ini_apply_point pnt, bool ext) { void *iter = data->data; while (iter && iter < data->data + data->size) { struct iwl_ucode_tlv *tlv = iter; void *ini_tlv = (void *)tlv->data; u32 type = le32_to_cpu(tlv->type); switch (type) { case IWL_UCODE_TLV_TYPE_BUFFER_ALLOCATION: iwl_fw_dbg_buffer_allocation(fwrt, ini_tlv); break; case IWL_UCODE_TLV_TYPE_HCMD: if (pnt < IWL_FW_INI_APPLY_AFTER_ALIVE) { IWL_ERR(fwrt, "Invalid apply point %x for host command\n", pnt); goto next; } iwl_fw_dbg_send_hcmd(fwrt, tlv); break; case IWL_UCODE_TLV_TYPE_REGIONS: iwl_fw_dbg_update_regions(fwrt, ini_tlv, ext, pnt); break; case IWL_UCODE_TLV_TYPE_TRIGGERS: iwl_fw_dbg_update_triggers(fwrt, ini_tlv, ext, pnt); break; case IWL_UCODE_TLV_TYPE_DEBUG_FLOW: break; default: WARN_ONCE(1, "Invalid TLV %x for apply point\n", type); break; } next: iter += sizeof(*tlv) + le32_to_cpu(tlv->length); } } void iwl_fw_dbg_apply_point(struct iwl_fw_runtime *fwrt, enum iwl_fw_ini_apply_point apply_point) { void *data = &fwrt->trans->apply_points[apply_point]; _iwl_fw_dbg_apply_point(fwrt, data, apply_point, false); data = &fwrt->trans->apply_points_ext[apply_point]; _iwl_fw_dbg_apply_point(fwrt, data, apply_point, true); } IWL_EXPORT_SYMBOL(iwl_fw_dbg_apply_point);