/****************************************************************************** * * 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 Intel Deutschland GmbH * * 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. * * You should have received a copy of the GNU General Public License * along with this program; * * 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 Intel Deutschland GmbH * 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 "fw-dbg.h" #include "iwl-io.h" #include "mvm.h" #include "iwl-prph.h" #include "iwl-csr.h" static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count, const void *data, size_t datalen) { const struct iwl_mvm_dump_ptrs *dump_ptrs = data; ssize_t bytes_read; ssize_t bytes_read_trans; if (offset < dump_ptrs->op_mode_len) { bytes_read = min_t(ssize_t, count, dump_ptrs->op_mode_len - offset); memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset, bytes_read); offset += bytes_read; count -= bytes_read; if (count == 0) return bytes_read; } else { bytes_read = 0; } if (!dump_ptrs->trans_ptr) return bytes_read; offset -= dump_ptrs->op_mode_len; bytes_read_trans = min_t(ssize_t, count, dump_ptrs->trans_ptr->len - offset); memcpy(buffer + bytes_read, (u8 *)dump_ptrs->trans_ptr->data + offset, bytes_read_trans); return bytes_read + bytes_read_trans; } static void iwl_mvm_free_coredump(const void *data) { const struct iwl_mvm_dump_ptrs *fw_error_dump = data; vfree(fw_error_dump->op_mode_ptr); vfree(fw_error_dump->trans_ptr); kfree(fw_error_dump); } static void iwl_mvm_dump_fifos(struct iwl_mvm *mvm, struct iwl_fw_error_dump_data **dump_data) { struct iwl_fw_error_dump_fifo *fifo_hdr; u32 *fifo_data; u32 fifo_len; unsigned long flags; int i, j; if (!iwl_trans_grab_nic_access(mvm->trans, false, &flags)) return; /* Pull RXF data from all RXFs */ for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.rxfifo_size); i++) { /* * Keep aside the additional offset that might be needed for * next RXF */ u32 offset_diff = RXF_DIFF_FROM_PREV * i; fifo_hdr = (void *)(*dump_data)->data; fifo_data = (void *)fifo_hdr->data; fifo_len = mvm->shared_mem_cfg.rxfifo_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 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(i); fifo_hdr->available_bytes = cpu_to_le32(iwl_trans_read_prph(mvm->trans, RXF_RD_D_SPACE + offset_diff)); fifo_hdr->wr_ptr = cpu_to_le32(iwl_trans_read_prph(mvm->trans, RXF_RD_WR_PTR + offset_diff)); fifo_hdr->rd_ptr = cpu_to_le32(iwl_trans_read_prph(mvm->trans, RXF_RD_RD_PTR + offset_diff)); fifo_hdr->fence_ptr = cpu_to_le32(iwl_trans_read_prph(mvm->trans, RXF_RD_FENCE_PTR + offset_diff)); fifo_hdr->fence_mode = cpu_to_le32(iwl_trans_read_prph(mvm->trans, RXF_SET_FENCE_MODE + offset_diff)); /* Lock fence */ iwl_trans_write_prph(mvm->trans, RXF_SET_FENCE_MODE + offset_diff, 0x1); /* Set fence pointer to the same place like WR pointer */ iwl_trans_write_prph(mvm->trans, RXF_LD_WR2FENCE + offset_diff, 0x1); /* Set fence offset */ iwl_trans_write_prph(mvm->trans, RXF_LD_FENCE_OFFSET_ADDR + offset_diff, 0x0); /* Read FIFO */ fifo_len /= sizeof(u32); /* Size in DWORDS */ for (j = 0; j < fifo_len; j++) fifo_data[j] = iwl_trans_read_prph(mvm->trans, RXF_FIFO_RD_FENCE_INC + offset_diff); *dump_data = iwl_fw_error_next_data(*dump_data); } /* Pull TXF data from all TXFs */ for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.txfifo_size); i++) { /* Mark the number of TXF we're pulling now */ iwl_trans_write_prph(mvm->trans, TXF_LARC_NUM, i); fifo_hdr = (void *)(*dump_data)->data; fifo_data = (void *)fifo_hdr->data; fifo_len = mvm->shared_mem_cfg.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 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(i); fifo_hdr->available_bytes = cpu_to_le32(iwl_trans_read_prph(mvm->trans, TXF_FIFO_ITEM_CNT)); fifo_hdr->wr_ptr = cpu_to_le32(iwl_trans_read_prph(mvm->trans, TXF_WR_PTR)); fifo_hdr->rd_ptr = cpu_to_le32(iwl_trans_read_prph(mvm->trans, TXF_RD_PTR)); fifo_hdr->fence_ptr = cpu_to_le32(iwl_trans_read_prph(mvm->trans, TXF_FENCE_PTR)); fifo_hdr->fence_mode = cpu_to_le32(iwl_trans_read_prph(mvm->trans, TXF_LOCK_FENCE)); /* Set the TXF_READ_MODIFY_ADDR to TXF_WR_PTR */ iwl_trans_write_prph(mvm->trans, TXF_READ_MODIFY_ADDR, TXF_WR_PTR); /* Dummy-read to advance the read pointer to the head */ iwl_trans_read_prph(mvm->trans, TXF_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(mvm->trans, TXF_READ_MODIFY_DATA); *dump_data = iwl_fw_error_next_data(*dump_data); } iwl_trans_release_nic_access(mvm->trans, &flags); } void iwl_mvm_free_fw_dump_desc(struct iwl_mvm *mvm) { if (mvm->fw_dump_desc == &iwl_mvm_dump_desc_assert || !mvm->fw_dump_desc) return; kfree(mvm->fw_dump_desc); mvm->fw_dump_desc = NULL; } #define IWL8260_ICCM_OFFSET 0x44000 /* Only for B-step */ #define IWL8260_ICCM_LEN 0xC000 /* Only for B-step */ static const struct { u32 start, end; } iwl_prph_dump_addr[] = { { .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 u32 iwl_dump_prph(struct iwl_trans *trans, struct iwl_fw_error_dump_data **data) { struct iwl_fw_error_dump_prph *prph; unsigned long flags; u32 prph_len = 0, i; if (!iwl_trans_grab_nic_access(trans, false, &flags)) return 0; for (i = 0; i < ARRAY_SIZE(iwl_prph_dump_addr); i++) { /* The range includes both boundaries */ int num_bytes_in_chunk = iwl_prph_dump_addr[i].end - iwl_prph_dump_addr[i].start + 4; int reg; __le32 *val; prph_len += sizeof(**data) + sizeof(*prph) + num_bytes_in_chunk; (*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); val = (void *)prph->data; for (reg = iwl_prph_dump_addr[i].start; reg <= iwl_prph_dump_addr[i].end; reg += 4) *val++ = cpu_to_le32(iwl_read_prph_no_grab(trans, reg)); *data = iwl_fw_error_next_data(*data); } iwl_trans_release_nic_access(trans, &flags); return prph_len; } void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm) { 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_mem *dump_mem; struct iwl_fw_error_dump_trigger_desc *dump_trig; struct iwl_mvm_dump_ptrs *fw_error_dump; u32 sram_len, sram_ofs; u32 file_len, fifo_data_len = 0; u32 smem_len = mvm->cfg->smem_len; u32 sram2_len = mvm->cfg->dccm2_len; bool monitor_dump_only = false; int i; lockdep_assert_held(&mvm->mutex); /* there's no point in fw dump if the bus is dead */ if (test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) { IWL_ERR(mvm, "Skip fw error dump since bus is dead\n"); return; } if (mvm->fw_dump_trig && mvm->fw_dump_trig->mode & IWL_FW_DBG_TRIGGER_MONITOR_ONLY) monitor_dump_only = true; fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL); if (!fw_error_dump) return; /* SRAM - include stack CCM if driver knows the values for it */ if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) { const struct fw_img *img; img = &mvm->fw->img[mvm->cur_ucode]; sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset; sram_len = img->sec[IWL_UCODE_SECTION_DATA].len; } else { sram_ofs = mvm->cfg->dccm_offset; sram_len = mvm->cfg->dccm_len; } /* reading RXF/TXF sizes */ if (test_bit(STATUS_FW_ERROR, &mvm->trans->status)) { struct iwl_mvm_shared_mem_cfg *mem_cfg = &mvm->shared_mem_cfg; fifo_data_len = 0; /* Count RXF size */ for (i = 0; i < ARRAY_SIZE(mem_cfg->rxfifo_size); i++) { if (!mem_cfg->rxfifo_size[i]) continue; /* Add header info */ fifo_data_len += mem_cfg->rxfifo_size[i] + sizeof(*dump_data) + sizeof(struct iwl_fw_error_dump_fifo); } for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++) { if (!mem_cfg->txfifo_size[i]) continue; /* Add header info */ fifo_data_len += mem_cfg->txfifo_size[i] + sizeof(*dump_data) + sizeof(struct iwl_fw_error_dump_fifo); } } file_len = sizeof(*dump_file) + sizeof(*dump_data) * 2 + sram_len + sizeof(*dump_mem) + fifo_data_len + sizeof(*dump_info); /* Make room for the SMEM, if it exists */ if (smem_len) file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len; /* Make room for the secondary SRAM, if it exists */ if (sram2_len) file_len += sizeof(*dump_data) + sizeof(*dump_mem) + sram2_len; /* Make room for fw's virtual image pages, if it exists */ if (mvm->fw->img[mvm->cur_ucode].paging_mem_size) file_len += mvm->num_of_paging_blk * (sizeof(*dump_data) + sizeof(struct iwl_fw_error_dump_paging) + PAGING_BLOCK_SIZE); /* If we only want a monitor dump, reset the file length */ if (monitor_dump_only) { file_len = sizeof(*dump_file) + sizeof(*dump_data) + sizeof(*dump_info); } /* Make room for PRPH registers */ for (i = 0; i < ARRAY_SIZE(iwl_prph_dump_addr); i++) { /* The range includes both boundaries */ int num_bytes_in_chunk = iwl_prph_dump_addr[i].end - iwl_prph_dump_addr[i].start + 4; file_len += sizeof(*dump_data) + sizeof(struct iwl_fw_error_dump_prph) + num_bytes_in_chunk; } /* * In 8000 HW family B-step include the ICCM (which resides separately) */ if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 && CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP) file_len += sizeof(*dump_data) + sizeof(*dump_mem) + IWL8260_ICCM_LEN; if (mvm->fw_dump_desc) file_len += sizeof(*dump_data) + sizeof(*dump_trig) + mvm->fw_dump_desc->len; dump_file = vzalloc(file_len); if (!dump_file) { kfree(fw_error_dump); iwl_mvm_free_fw_dump_desc(mvm); return; } fw_error_dump->op_mode_ptr = dump_file; dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER); dump_data = (void *)dump_file->data; 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 = mvm->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(mvm->trans->hw_rev)); memcpy(dump_info->fw_human_readable, mvm->fw->human_readable, sizeof(dump_info->fw_human_readable)); strncpy(dump_info->dev_human_readable, mvm->cfg->name, sizeof(dump_info->dev_human_readable)); strncpy(dump_info->bus_human_readable, mvm->dev->bus->name, sizeof(dump_info->bus_human_readable)); dump_data = iwl_fw_error_next_data(dump_data); /* We only dump the FIFOs if the FW is in error state */ if (test_bit(STATUS_FW_ERROR, &mvm->trans->status)) iwl_mvm_dump_fifos(mvm, &dump_data); if (mvm->fw_dump_desc) { dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_ERROR_INFO); dump_data->len = cpu_to_le32(sizeof(*dump_trig) + mvm->fw_dump_desc->len); dump_trig = (void *)dump_data->data; memcpy(dump_trig, &mvm->fw_dump_desc->trig_desc, sizeof(*dump_trig) + mvm->fw_dump_desc->len); /* now we can free this copy */ iwl_mvm_free_fw_dump_desc(mvm); dump_data = iwl_fw_error_next_data(dump_data); } /* In case we only want monitor dump, skip to dump trasport data */ if (monitor_dump_only) goto dump_trans_data; dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM); dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem)); dump_mem = (void *)dump_data->data; dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM); dump_mem->offset = cpu_to_le32(sram_ofs); iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data, sram_len); if (smem_len) { dump_data = iwl_fw_error_next_data(dump_data); dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM); dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem)); dump_mem = (void *)dump_data->data; dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM); dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset); iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset, dump_mem->data, smem_len); } if (sram2_len) { dump_data = iwl_fw_error_next_data(dump_data); dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM); dump_data->len = cpu_to_le32(sram2_len + sizeof(*dump_mem)); dump_mem = (void *)dump_data->data; dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM); dump_mem->offset = cpu_to_le32(mvm->cfg->dccm2_offset); iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->dccm2_offset, dump_mem->data, sram2_len); } if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 && CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP) { dump_data = iwl_fw_error_next_data(dump_data); dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM); dump_data->len = cpu_to_le32(IWL8260_ICCM_LEN + sizeof(*dump_mem)); dump_mem = (void *)dump_data->data; dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM); dump_mem->offset = cpu_to_le32(IWL8260_ICCM_OFFSET); iwl_trans_read_mem_bytes(mvm->trans, IWL8260_ICCM_OFFSET, dump_mem->data, IWL8260_ICCM_LEN); } /* Dump fw's virtual image */ if (mvm->fw->img[mvm->cur_ucode].paging_mem_size) { u32 i; for (i = 1; i < mvm->num_of_paging_blk + 1; i++) { struct iwl_fw_error_dump_paging *paging; struct page *pages = mvm->fw_paging_db[i].fw_paging_block; dump_data = iwl_fw_error_next_data(dump_data); dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_PAGING); dump_data->len = cpu_to_le32(sizeof(*paging) + PAGING_BLOCK_SIZE); paging = (void *)dump_data->data; paging->index = cpu_to_le32(i); memcpy(paging->data, page_address(pages), PAGING_BLOCK_SIZE); } } dump_data = iwl_fw_error_next_data(dump_data); iwl_dump_prph(mvm->trans, &dump_data); dump_trans_data: fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans, mvm->fw_dump_trig); fw_error_dump->op_mode_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); dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0, GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump); mvm->fw_dump_trig = NULL; clear_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status); } struct iwl_mvm_dump_desc iwl_mvm_dump_desc_assert = { .trig_desc = { .type = cpu_to_le32(FW_DBG_TRIGGER_FW_ASSERT), }, }; int iwl_mvm_fw_dbg_collect_desc(struct iwl_mvm *mvm, struct iwl_mvm_dump_desc *desc, struct iwl_fw_dbg_trigger_tlv *trigger) { unsigned int delay = 0; if (trigger) delay = msecs_to_jiffies(le32_to_cpu(trigger->stop_delay)); if (test_and_set_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status)) return -EBUSY; if (WARN_ON(mvm->fw_dump_desc)) iwl_mvm_free_fw_dump_desc(mvm); IWL_WARN(mvm, "Collecting data: trigger %d fired.\n", le32_to_cpu(desc->trig_desc.type)); mvm->fw_dump_desc = desc; mvm->fw_dump_trig = trigger; queue_delayed_work(system_wq, &mvm->fw_dump_wk, delay); return 0; } int iwl_mvm_fw_dbg_collect(struct iwl_mvm *mvm, enum iwl_fw_dbg_trigger trig, const char *str, size_t len, struct iwl_fw_dbg_trigger_tlv *trigger) { struct iwl_mvm_dump_desc *desc; 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_mvm_fw_dbg_collect_desc(mvm, desc, trigger); } int iwl_mvm_fw_dbg_collect_trig(struct iwl_mvm *mvm, struct iwl_fw_dbg_trigger_tlv *trigger, const char *fmt, ...) { u16 occurrences = le16_to_cpu(trigger->occurrences); int ret, len = 0; char buf[64]; if (!occurrences) 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_mvm_fw_dbg_collect(mvm, le32_to_cpu(trigger->id), buf, len, trigger); if (ret) return ret; trigger->occurrences = cpu_to_le16(occurrences - 1); return 0; } static inline void iwl_mvm_restart_early_start(struct iwl_mvm *mvm) { if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) iwl_clear_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100); else iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 1); } int iwl_mvm_start_fw_dbg_conf(struct iwl_mvm *mvm, u8 conf_id) { u8 *ptr; int ret; int i; if (WARN_ONCE(conf_id >= ARRAY_SIZE(mvm->fw->dbg_conf_tlv), "Invalid configuration %d\n", conf_id)) return -EINVAL; /* EARLY START - firmware's configuration is hard coded */ if ((!mvm->fw->dbg_conf_tlv[conf_id] || !mvm->fw->dbg_conf_tlv[conf_id]->num_of_hcmds) && conf_id == FW_DBG_START_FROM_ALIVE) { iwl_mvm_restart_early_start(mvm); return 0; } if (!mvm->fw->dbg_conf_tlv[conf_id]) return -EINVAL; if (mvm->fw_dbg_conf != FW_DBG_INVALID) IWL_WARN(mvm, "FW already configured (%d) - re-configuring\n", mvm->fw_dbg_conf); /* Send all HCMDs for configuring the FW debug */ ptr = (void *)&mvm->fw->dbg_conf_tlv[conf_id]->hcmd; for (i = 0; i < mvm->fw->dbg_conf_tlv[conf_id]->num_of_hcmds; i++) { struct iwl_fw_dbg_conf_hcmd *cmd = (void *)ptr; ret = iwl_mvm_send_cmd_pdu(mvm, cmd->id, 0, le16_to_cpu(cmd->len), cmd->data); if (ret) return ret; ptr += sizeof(*cmd); ptr += le16_to_cpu(cmd->len); } mvm->fw_dbg_conf = conf_id; return ret; }