// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
 * Copyright (C) 2005-2014, 2018-2026 Intel Corporation
 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
 * Copyright (C) 2015-2017 Intel Deutschland GmbH
 */
#include <linux/devcoredump.h>
#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"
#include "iwl-fh.h"

/*
 * iwl_fw_dbg_alloc_sgtable - allocates (chained) scatterlist in the given size,
 *      fills it with pages and returns it
 * @size: the size (in bytes) of the table
 */
struct scatterlist *iwl_fw_dbg_alloc_sgtable(ssize_t size)
{
        struct scatterlist *result = NULL, *prev;
        int nents, i, n_prev;

        nents = DIV_ROUND_UP(size, PAGE_SIZE);

#define N_ENTRIES_PER_PAGE (PAGE_SIZE / sizeof(*result))
        /*
         * We need an additional entry for table chaining,
         * this ensures the loop can finish i.e. we can
         * fit at least two entries per page (obviously,
         * many more really fit.)
         */
        BUILD_BUG_ON(N_ENTRIES_PER_PAGE < 2);

        while (nents > 0) {
                struct scatterlist *new, *iter;
                int n_fill, n_alloc;

                if (nents <= N_ENTRIES_PER_PAGE) {
                        /* last needed table */
                        n_fill = nents;
                        n_alloc = nents;
                        nents = 0;
                } else {
                        /* fill a page with entries */
                        n_alloc = N_ENTRIES_PER_PAGE;
                        /* reserve one for chaining */
                        n_fill = n_alloc - 1;
                        nents -= n_fill;
                }

                new = kzalloc_objs(*new, n_alloc);
                if (!new) {
                        if (result)
                                _devcd_free_sgtable(result);
                        return NULL;
                }
                sg_init_table(new, n_alloc);

                if (!result)
                        result = new;
                else
                        sg_chain(prev, n_prev, new);
                prev = new;
                n_prev = n_alloc;

                for_each_sg(new, iter, n_fill, i) {
                        struct page *new_page = alloc_page(GFP_KERNEL);

                        if (!new_page) {
                                _devcd_free_sgtable(result);
                                return NULL;
                        }

                        sg_set_page(iter, new_page, PAGE_SIZE, 0);
                }
        }

        return result;
}

/**
 * struct iwl_dump_ini_region_data - region data
 * @reg_tlv: region TLV
 * @dump_data: dump data
 */
struct iwl_dump_ini_region_data {
        struct iwl_ucode_tlv *reg_tlv;
        struct iwl_fwrt_dump_data *dump_data;
};

static int iwl_dump_ini_prph_mac_iter_common(struct iwl_fw_runtime *fwrt,
                                             void *range_ptr, u32 addr,
                                             __le32 size)
{
        struct iwl_fw_ini_error_dump_range *range = range_ptr;
        __le32 *val = range->data;
        int i;

        range->internal_base_addr = cpu_to_le32(addr);
        range->range_data_size = size;
        for (i = 0; i < le32_to_cpu(size); i += 4)
                *val++ = cpu_to_le32(iwl_trans_read_prph(fwrt->trans, addr + i));

        return sizeof(*range) + le32_to_cpu(range->range_data_size);
}

static int
iwl_dump_ini_prph_mac_iter(struct iwl_fw_runtime *fwrt,
                           struct iwl_dump_ini_region_data *reg_data,
                           void *range_ptr, int idx)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        u32 addr = le32_to_cpu(reg->addrs[idx]) +
                   le32_to_cpu(reg->dev_addr.offset);

        return iwl_dump_ini_prph_mac_iter_common(fwrt, range_ptr, addr,
                                                 reg->dev_addr.size);
}

static int
iwl_dump_ini_prph_mac_block_iter(struct iwl_fw_runtime *fwrt,
                                 struct iwl_dump_ini_region_data *reg_data,
                                 void *range_ptr, int idx)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        struct iwl_fw_ini_addr_size *pairs = (void *)reg->addrs;
        u32 addr = le32_to_cpu(reg->dev_addr_range.offset) +
                   le32_to_cpu(pairs[idx].addr);

        return iwl_dump_ini_prph_mac_iter_common(fwrt, range_ptr, addr,
                                                 pairs[idx].size);
}

static int iwl_dump_ini_prph_phy_iter_common(struct iwl_fw_runtime *fwrt,
                                             void *range_ptr, u32 addr,
                                             __le32 size, __le32 offset)
{
        struct iwl_fw_ini_error_dump_range *range = range_ptr;
        __le32 *val = range->data;
        u32 indirect_wr_addr = WMAL_INDRCT_RD_CMD1;
        u32 indirect_rd_addr = WMAL_MRSPF_1;
        u32 prph_val;
        u32 dphy_state;
        u32 dphy_addr;
        u32 prph_stts;
        int i;

        range->internal_base_addr = cpu_to_le32(addr);
        range->range_data_size = size;

        if (fwrt->trans->mac_cfg->device_family < IWL_DEVICE_FAMILY_AX210)
                indirect_wr_addr = WMAL_INDRCT_CMD1;

        indirect_wr_addr += le32_to_cpu(offset);
        indirect_rd_addr += le32_to_cpu(offset);

        dphy_addr = (offset) ? WFPM_LMAC2_PS_CTL_RW : WFPM_LMAC1_PS_CTL_RW;
        dphy_state = iwl_read_umac_prph_no_grab(fwrt->trans, dphy_addr);

        for (i = 0; i < le32_to_cpu(size); i += 4) {
                if (dphy_state == HBUS_TIMEOUT ||
                    (dphy_state & WFPM_PS_CTL_RW_PHYRF_PD_FSM_CURSTATE_MSK) !=
                    WFPM_PHYRF_STATE_ON) {
                        *val++ = cpu_to_le32(WFPM_DPHY_OFF);
                        continue;
                }

                iwl_trans_write_prph(fwrt->trans, indirect_wr_addr,
                                     WMAL_INDRCT_CMD(addr + i));

                if (fwrt->trans->info.hw_rf_id != IWL_CFG_RF_TYPE_JF1 &&
                    fwrt->trans->info.hw_rf_id != IWL_CFG_RF_TYPE_JF2 &&
                    fwrt->trans->info.hw_rf_id != IWL_CFG_RF_TYPE_HR1 &&
                    fwrt->trans->info.hw_rf_id != IWL_CFG_RF_TYPE_HR2) {
                        udelay(2);
                        prph_stts = iwl_trans_read_prph(fwrt->trans,
                                                        WMAL_MRSPF_STTS);

                        /* Abort dump if status is 0xA5A5A5A2 or FIFO1 empty */
                        if (prph_stts == WMAL_TIMEOUT_VAL ||
                            !WMAL_MRSPF_STTS_IS_FIFO1_NOT_EMPTY(prph_stts))
                                break;
                }

                prph_val = iwl_trans_read_prph(fwrt->trans,
                                               indirect_rd_addr);
                *val++ = cpu_to_le32(prph_val);
        }

        return sizeof(*range) + le32_to_cpu(range->range_data_size);
}

static int
iwl_dump_ini_prph_phy_iter(struct iwl_fw_runtime *fwrt,
                           struct iwl_dump_ini_region_data *reg_data,
                           void *range_ptr, int idx)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        u32 addr = le32_to_cpu(reg->addrs[idx]);

        return iwl_dump_ini_prph_phy_iter_common(fwrt, range_ptr, addr,
                                                 reg->dev_addr.size,
                                                 reg->dev_addr.offset);
}

static int
iwl_dump_ini_prph_phy_block_iter(struct iwl_fw_runtime *fwrt,
                                 struct iwl_dump_ini_region_data *reg_data,
                                 void *range_ptr, int idx)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        struct iwl_fw_ini_addr_size *pairs = (void *)reg->addrs;
        u32 addr = le32_to_cpu(pairs[idx].addr);

        return iwl_dump_ini_prph_phy_iter_common(fwrt, range_ptr, addr,
                                                 pairs[idx].size,
                                                 reg->dev_addr_range.offset);
}

static int iwl_dump_ini_csr_iter(struct iwl_fw_runtime *fwrt,
                                 struct iwl_dump_ini_region_data *reg_data,
                                 void *range_ptr, int idx)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        struct iwl_fw_ini_error_dump_range *range = range_ptr;
        __le32 *val = range->data;
        u32 addr = le32_to_cpu(reg->addrs[idx]) +
                   le32_to_cpu(reg->dev_addr.offset);
        int i;

        range->internal_base_addr = cpu_to_le32(addr);
        range->range_data_size = reg->dev_addr.size;
        for (i = 0; i < le32_to_cpu(reg->dev_addr.size); i += 4)
                *val++ = cpu_to_le32(iwl_trans_read32(fwrt->trans, addr + i));

        return sizeof(*range) + le32_to_cpu(range->range_data_size);
}

static int iwl_dump_ini_config_iter(struct iwl_fw_runtime *fwrt,
                                    struct iwl_dump_ini_region_data *reg_data,
                                    void *range_ptr, int idx)
{
        struct iwl_trans *trans = fwrt->trans;
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        struct iwl_fw_ini_error_dump_range *range = range_ptr;
        __le32 *val = range->data;
        u32 addr = le32_to_cpu(reg->addrs[idx]) +
                   le32_to_cpu(reg->dev_addr.offset);
        int i;

        range->internal_base_addr = cpu_to_le32(addr);
        range->range_data_size = reg->dev_addr.size;
        for (i = 0; i < le32_to_cpu(reg->dev_addr.size); i += 4) {
                int ret;
                u32 tmp;

                ret = iwl_trans_read_config32(trans, addr + i, &tmp);
                if (ret < 0)
                        return ret;

                *val++ = cpu_to_le32(tmp);
        }

        return sizeof(*range) + le32_to_cpu(range->range_data_size);
}

static int iwl_dump_ini_dev_mem_iter(struct iwl_fw_runtime *fwrt,
                                     struct iwl_dump_ini_region_data *reg_data,
                                     void *range_ptr, int idx)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        struct iwl_fw_ini_error_dump_range *range = range_ptr;
        u32 addr = le32_to_cpu(reg->addrs[idx]) +
                   le32_to_cpu(reg->dev_addr.offset);

        range->internal_base_addr = cpu_to_le32(addr);
        range->range_data_size = reg->dev_addr.size;
        iwl_trans_read_mem_bytes_no_grab(fwrt->trans, addr, range->data,
                                         le32_to_cpu(reg->dev_addr.size));

        if (reg->sub_type == IWL_FW_INI_REGION_DEVICE_MEMORY_SUBTYPE_HW_SMEM &&
            fwrt->sanitize_ops && fwrt->sanitize_ops->frob_txf)
                fwrt->sanitize_ops->frob_txf(fwrt->sanitize_ctx,
                                             range->data,
                                             le32_to_cpu(reg->dev_addr.size));

        return sizeof(*range) + le32_to_cpu(range->range_data_size);
}

static int _iwl_dump_ini_paging_iter(struct iwl_fw_runtime *fwrt,
                                     void *range_ptr, int idx)
{
        struct page *page = fwrt->fw_paging_db[idx].fw_paging_block;
        struct iwl_fw_ini_error_dump_range *range = range_ptr;
        dma_addr_t addr = fwrt->fw_paging_db[idx].fw_paging_phys;
        u32 page_size = fwrt->fw_paging_db[idx].fw_paging_size;

        range->page_num = cpu_to_le32(idx);
        range->range_data_size = cpu_to_le32(page_size);
        dma_sync_single_for_cpu(fwrt->trans->dev, addr, page_size,
                                DMA_BIDIRECTIONAL);
        memcpy(range->data, page_address(page), page_size);
        dma_sync_single_for_device(fwrt->trans->dev, addr, page_size,
                                   DMA_BIDIRECTIONAL);

        return sizeof(*range) + le32_to_cpu(range->range_data_size);
}

static int iwl_dump_ini_paging_iter(struct iwl_fw_runtime *fwrt,
                                    struct iwl_dump_ini_region_data *reg_data,
                                    void *range_ptr, int idx)
{
        struct iwl_fw_ini_error_dump_range *range;
        u32 page_size;

        /* all paged index start from 1 to skip CSS section */
        idx++;

        if (!fwrt->trans->mac_cfg->gen2)
                return _iwl_dump_ini_paging_iter(fwrt, range_ptr, idx);

        range = range_ptr;
        page_size = fwrt->trans->init_dram.paging[idx].size;

        range->page_num = cpu_to_le32(idx);
        range->range_data_size = cpu_to_le32(page_size);
        memcpy(range->data, fwrt->trans->init_dram.paging[idx].block,
               page_size);

        return sizeof(*range) + le32_to_cpu(range->range_data_size);
}

static int
iwl_dump_ini_mon_dram_iter(struct iwl_fw_runtime *fwrt,
                           struct iwl_dump_ini_region_data *reg_data,
                           void *range_ptr, int idx)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        struct iwl_fw_ini_error_dump_range *range = range_ptr;
        struct iwl_dram_data *frag;
        u32 alloc_id = le32_to_cpu(reg->dram_alloc_id);

        frag = &fwrt->trans->dbg.fw_mon_ini[alloc_id].frags[idx];

        range->dram_base_addr = cpu_to_le64(frag->physical);
        range->range_data_size = cpu_to_le32(frag->size);

        memcpy(range->data, frag->block, frag->size);

        return sizeof(*range) + le32_to_cpu(range->range_data_size);
}

static int iwl_dump_ini_mon_smem_iter(struct iwl_fw_runtime *fwrt,
                                      struct iwl_dump_ini_region_data *reg_data,
                                      void *range_ptr, int idx)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        struct iwl_fw_ini_error_dump_range *range = range_ptr;
        u32 addr = le32_to_cpu(reg->internal_buffer.base_addr);

        range->internal_base_addr = cpu_to_le32(addr);
        range->range_data_size = reg->internal_buffer.size;
        iwl_trans_read_mem_bytes_no_grab(fwrt->trans, addr, range->data,
                                         le32_to_cpu(reg->internal_buffer.size));

        return sizeof(*range) + le32_to_cpu(range->range_data_size);
}

static bool iwl_ini_txf_iter(struct iwl_fw_runtime *fwrt,
                             struct iwl_dump_ini_region_data *reg_data, int idx)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        struct iwl_txf_iter_data *iter = &fwrt->dump.txf_iter_data;
        struct iwl_fwrt_shared_mem_cfg *cfg = &fwrt->smem_cfg;
        int txf_num = cfg->num_txfifo_entries;
        int int_txf_num = ARRAY_SIZE(cfg->internal_txfifo_size);
        u32 lmac_bitmap = le32_to_cpu(reg->fifos.fid[0]);

        if (!idx) {
                if (le32_to_cpu(reg->fifos.offset) && cfg->num_lmacs == 1) {
                        IWL_ERR(fwrt, "WRT: Invalid lmac offset 0x%x\n",
                                le32_to_cpu(reg->fifos.offset));
                        return false;
                }

                iter->internal_txf = 0;
                iter->fifo_size = 0;
                iter->fifo = -1;
                if (le32_to_cpu(reg->fifos.offset))
                        iter->lmac = 1;
                else
                        iter->lmac = 0;
        }

        if (!iter->internal_txf) {
                for (iter->fifo++; iter->fifo < txf_num; iter->fifo++) {
                        iter->fifo_size =
                                cfg->lmac[iter->lmac].txfifo_size[iter->fifo];
                        if (iter->fifo_size && (lmac_bitmap & BIT(iter->fifo)))
                                return true;
                }
                iter->fifo--;
        }

        iter->internal_txf = 1;

        if (!fw_has_capa(&fwrt->fw->ucode_capa,
                         IWL_UCODE_TLV_CAPA_EXTEND_SHARED_MEM_CFG))
                return false;

        for (iter->fifo++; iter->fifo < int_txf_num + txf_num; iter->fifo++) {
                iter->fifo_size =
                        cfg->internal_txfifo_size[iter->fifo - txf_num];
                if (iter->fifo_size && (lmac_bitmap & BIT(iter->fifo)))
                        return true;
        }

        return false;
}

static int iwl_dump_ini_txf_iter(struct iwl_fw_runtime *fwrt,
                                 struct iwl_dump_ini_region_data *reg_data,
                                 void *range_ptr, int idx)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        struct iwl_fw_ini_error_dump_range *range = range_ptr;
        struct iwl_txf_iter_data *iter = &fwrt->dump.txf_iter_data;
        struct iwl_fw_ini_error_dump_register *reg_dump = (void *)range->data;
        u32 offs = le32_to_cpu(reg->fifos.offset), addr;
        u32 registers_num = iwl_tlv_array_len(reg_data->reg_tlv, reg, addrs);
        u32 registers_size = registers_num * sizeof(*reg_dump);
        __le32 *data;
        int i;

        if (!iwl_ini_txf_iter(fwrt, reg_data, idx))
                return -EIO;

        range->fifo_hdr.fifo_num = cpu_to_le32(iter->fifo);
        range->fifo_hdr.num_of_registers = cpu_to_le32(registers_num);
        range->range_data_size = cpu_to_le32(iter->fifo_size + registers_size);

        iwl_trans_write_prph(fwrt->trans, TXF_LARC_NUM + offs, iter->fifo);

        /*
         * read txf registers. for each register, write to the dump the
         * register address and its value
         */
        for (i = 0; i < registers_num; i++) {
                addr = le32_to_cpu(reg->addrs[i]) + offs;

                reg_dump->addr = cpu_to_le32(addr);
                reg_dump->data = cpu_to_le32(iwl_trans_read_prph(fwrt->trans,
                                                                 addr));

                reg_dump++;
        }

        if (reg->fifos.hdr_only) {
                range->range_data_size = cpu_to_le32(registers_size);
                goto out;
        }

        /* Set the TXF_READ_MODIFY_ADDR to TXF_WR_PTR */
        iwl_trans_write_prph(fwrt->trans, TXF_READ_MODIFY_ADDR + offs,
                             TXF_WR_PTR + offs);

        /* Dummy-read to advance the read pointer to the head */
        iwl_trans_read_prph(fwrt->trans, TXF_READ_MODIFY_DATA + offs);

        /* Read FIFO */
        addr = TXF_READ_MODIFY_DATA + offs;
        data = (void *)reg_dump;
        for (i = 0; i < iter->fifo_size; i += sizeof(*data))
                *data++ = cpu_to_le32(iwl_trans_read_prph(fwrt->trans, addr));

        if (fwrt->sanitize_ops && fwrt->sanitize_ops->frob_txf)
                fwrt->sanitize_ops->frob_txf(fwrt->sanitize_ctx,
                                             reg_dump, iter->fifo_size);

out:
        return sizeof(*range) + le32_to_cpu(range->range_data_size);
}

static int
iwl_dump_ini_prph_snps_dphyip_iter(struct iwl_fw_runtime *fwrt,
                                   struct iwl_dump_ini_region_data *reg_data,
                                   void *range_ptr, int idx)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        struct iwl_fw_ini_error_dump_range *range = range_ptr;
        __le32 *val = range->data;
        __le32 offset = reg->dev_addr.offset;
        u32 indirect_rd_wr_addr = DPHYIP_INDIRECT;
        u32 addr = le32_to_cpu(reg->addrs[idx]);
        u32 dphy_state, dphy_addr, prph_val;
        int i;

        range->internal_base_addr = cpu_to_le32(addr);
        range->range_data_size = reg->dev_addr.size;

        indirect_rd_wr_addr += le32_to_cpu(offset);

        dphy_addr = offset ? WFPM_LMAC2_PS_CTL_RW : WFPM_LMAC1_PS_CTL_RW;
        dphy_state = iwl_read_umac_prph_no_grab(fwrt->trans, dphy_addr);

        for (i = 0; i < le32_to_cpu(reg->dev_addr.size); i += 4) {
                if (dphy_state == HBUS_TIMEOUT ||
                    (dphy_state & WFPM_PS_CTL_RW_PHYRF_PD_FSM_CURSTATE_MSK) !=
                    WFPM_PHYRF_STATE_ON) {
                        *val++ = cpu_to_le32(WFPM_DPHY_OFF);
                        continue;
                }

                iwl_trans_write_prph(fwrt->trans, indirect_rd_wr_addr,
                                     addr + i);
                /* wait a bit for value to be ready in register */
                udelay(1);
                prph_val = iwl_trans_read_prph(fwrt->trans,
                                               indirect_rd_wr_addr);
                *val++ = cpu_to_le32((prph_val & DPHYIP_INDIRECT_RD_MSK) >>
                                     DPHYIP_INDIRECT_RD_SHIFT);
        }

        return sizeof(*range) + le32_to_cpu(range->range_data_size);
}

struct iwl_ini_rxf_data {
        u32 fifo_num;
        u32 size;
        u32 offset;
};

static void iwl_ini_get_rxf_data(struct iwl_fw_runtime *fwrt,
                                 struct iwl_dump_ini_region_data *reg_data,
                                 struct iwl_ini_rxf_data *data)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        u32 fid1 = le32_to_cpu(reg->fifos.fid[0]);
        u32 fid2 = le32_to_cpu(reg->fifos.fid[1]);
        u8 fifo_idx;

        if (!data)
                return;

        memset(data, 0, sizeof(*data));

        /* make sure only one bit is set in only one fid */
        if (WARN_ONCE(hweight_long(fid1) + hweight_long(fid2) != 1,
                      "fid1=%x, fid2=%x\n", fid1, fid2))
                return;

        if (fid1) {
                fifo_idx = ffs(fid1) - 1;
                if (WARN_ONCE(fifo_idx >= MAX_NUM_LMAC, "fifo_idx=%d\n",
                              fifo_idx))
                        return;

                data->size = fwrt->smem_cfg.lmac[fifo_idx].rxfifo1_size;
                data->fifo_num = fifo_idx;
        } else {
                u8 max_idx;

                fifo_idx = ffs(fid2) - 1;
                if (iwl_fw_lookup_notif_ver(fwrt->fw, SYSTEM_GROUP,
                                            SHARED_MEM_CFG_CMD, 0) <= 3)
                        max_idx = 0;
                else
                        max_idx = 1;

                if (WARN_ONCE(fifo_idx > max_idx,
                              "invalid umac fifo idx %d", fifo_idx))
                        return;

                /* use bit 31 to distinguish between umac and lmac rxf while
                 * parsing the dump
                 */
                data->fifo_num = fifo_idx | IWL_RXF_UMAC_BIT;

                switch (fifo_idx) {
                case 0:
                        data->size = fwrt->smem_cfg.rxfifo2_size;
                        data->offset = iwl_umac_prph(fwrt->trans,
                                                     RXF_DIFF_FROM_PREV);
                        break;
                case 1:
                        data->size = fwrt->smem_cfg.rxfifo2_control_size;
                        data->offset = iwl_umac_prph(fwrt->trans,
                                                     RXF2C_DIFF_FROM_PREV);
                        break;
                }
        }
}

static int iwl_dump_ini_rxf_iter(struct iwl_fw_runtime *fwrt,
                                 struct iwl_dump_ini_region_data *reg_data,
                                 void *range_ptr, int idx)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        struct iwl_fw_ini_error_dump_range *range = range_ptr;
        struct iwl_ini_rxf_data rxf_data;
        struct iwl_fw_ini_error_dump_register *reg_dump = (void *)range->data;
        u32 offs = le32_to_cpu(reg->fifos.offset), addr;
        u32 registers_num = iwl_tlv_array_len(reg_data->reg_tlv, reg, addrs);
        u32 registers_size = registers_num * sizeof(*reg_dump);
        __le32 *data;
        int i;

        iwl_ini_get_rxf_data(fwrt, reg_data, &rxf_data);
        if (!rxf_data.size)
                return -EIO;

        range->fifo_hdr.fifo_num = cpu_to_le32(rxf_data.fifo_num);
        range->fifo_hdr.num_of_registers = cpu_to_le32(registers_num);
        range->range_data_size = cpu_to_le32(rxf_data.size + registers_size);

        /*
         * read rxf registers. for each register, write to the dump the
         * register address and its value
         */
        for (i = 0; i < registers_num; i++) {
                addr = le32_to_cpu(reg->addrs[i]) + offs;

                reg_dump->addr = cpu_to_le32(addr);
                reg_dump->data = cpu_to_le32(iwl_trans_read_prph(fwrt->trans,
                                                                 addr));

                reg_dump++;
        }

        if (reg->fifos.hdr_only) {
                range->range_data_size = cpu_to_le32(registers_size);
                goto out;
        }

        offs = rxf_data.offset;

        /* Lock fence */
        iwl_trans_write_prph(fwrt->trans, RXF_SET_FENCE_MODE + offs, 0x1);
        /* Set fence pointer to the same place like WR pointer */
        iwl_trans_write_prph(fwrt->trans, RXF_LD_WR2FENCE + offs, 0x1);
        /* Set fence offset */
        iwl_trans_write_prph(fwrt->trans, RXF_LD_FENCE_OFFSET_ADDR + offs, 0x0);

        /* Read FIFO */
        addr =  RXF_FIFO_RD_FENCE_INC + offs;
        data = (void *)reg_dump;
        for (i = 0; i < rxf_data.size; i += sizeof(*data))
                *data++ = cpu_to_le32(iwl_trans_read_prph(fwrt->trans, addr));

out:
        return sizeof(*range) + le32_to_cpu(range->range_data_size);
}

static int
iwl_dump_ini_err_table_iter(struct iwl_fw_runtime *fwrt,
                            struct iwl_dump_ini_region_data *reg_data,
                            void *range_ptr, int idx)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        struct iwl_fw_ini_region_err_table *err_table = &reg->err_table;
        struct iwl_fw_ini_error_dump_range *range = range_ptr;
        u32 addr = le32_to_cpu(err_table->base_addr) +
                   le32_to_cpu(err_table->offset);

        range->internal_base_addr = cpu_to_le32(addr);
        range->range_data_size = err_table->size;
        iwl_trans_read_mem_bytes_no_grab(fwrt->trans, addr, range->data,
                                         le32_to_cpu(err_table->size));

        return sizeof(*range) + le32_to_cpu(range->range_data_size);
}

static int
iwl_dump_ini_special_mem_iter(struct iwl_fw_runtime *fwrt,
                              struct iwl_dump_ini_region_data *reg_data,
                              void *range_ptr, int idx)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        struct iwl_fw_ini_region_special_device_memory *special_mem =
                &reg->special_mem;

        struct iwl_fw_ini_error_dump_range *range = range_ptr;
        u32 addr = le32_to_cpu(special_mem->base_addr) +
                   le32_to_cpu(special_mem->offset);

        range->internal_base_addr = cpu_to_le32(addr);
        range->range_data_size = special_mem->size;
        iwl_trans_read_mem_bytes_no_grab(fwrt->trans, addr, range->data,
                                         le32_to_cpu(special_mem->size));

        return sizeof(*range) + le32_to_cpu(range->range_data_size);
}

static int
iwl_dump_ini_dbgi_sram_iter(struct iwl_fw_runtime *fwrt,
                            struct iwl_dump_ini_region_data *reg_data,
                            void *range_ptr, int idx)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        struct iwl_fw_ini_error_dump_range *range = range_ptr;
        __le32 *val = range->data;
        u32 prph_data;
        int i;

        range->range_data_size = reg->dev_addr.size;
        for (i = 0; i < (le32_to_cpu(reg->dev_addr.size) / 4); i++) {
                prph_data =
                        iwl_trans_read_prph(fwrt->trans,
                                            (i % 2) ?
                                                DBGI_SRAM_TARGET_ACCESS_RDATA_MSB :
                                                DBGI_SRAM_TARGET_ACCESS_RDATA_LSB);
                if (iwl_trans_is_hw_error_value(prph_data))
                        return -EBUSY;
                *val++ = cpu_to_le32(prph_data);
        }

        return sizeof(*range) + le32_to_cpu(range->range_data_size);
}

static int iwl_dump_ini_fw_pkt_iter(struct iwl_fw_runtime *fwrt,
                                    struct iwl_dump_ini_region_data *reg_data,
                                    void *range_ptr, int idx)
{
        struct iwl_fw_ini_error_dump_range *range = range_ptr;
        struct iwl_rx_packet *pkt = reg_data->dump_data->fw_pkt;
        u32 pkt_len;

        if (!pkt)
                return -EIO;

        pkt_len = iwl_rx_packet_payload_len(pkt);

        memcpy(&range->fw_pkt_hdr, &pkt->hdr, sizeof(range->fw_pkt_hdr));
        range->range_data_size = cpu_to_le32(pkt_len);

        memcpy(range->data, pkt->data, pkt_len);

        return sizeof(*range) + le32_to_cpu(range->range_data_size);
}

static int iwl_dump_ini_imr_iter(struct iwl_fw_runtime *fwrt,
                                 struct iwl_dump_ini_region_data *reg_data,
                                 void *range_ptr, int idx)
{
        /* read the IMR memory and DMA it to SRAM */
        struct iwl_fw_ini_error_dump_range *range = range_ptr;
        u64 imr_curr_addr = fwrt->trans->dbg.imr_data.imr_curr_addr;
        u32 imr_rem_bytes = fwrt->trans->dbg.imr_data.imr2sram_remainbyte;
        u32 sram_addr = fwrt->trans->dbg.imr_data.sram_addr;
        u32 sram_size = fwrt->trans->dbg.imr_data.sram_size;
        u32 size_to_dump = (imr_rem_bytes > sram_size) ? sram_size : imr_rem_bytes;

        range->range_data_size = cpu_to_le32(size_to_dump);
        if (iwl_trans_write_imr_mem(fwrt->trans, sram_addr,
                                    imr_curr_addr, size_to_dump)) {
                IWL_ERR(fwrt, "WRT_DEBUG: IMR Memory transfer failed\n");
                return -1;
        }

        fwrt->trans->dbg.imr_data.imr_curr_addr = imr_curr_addr + size_to_dump;
        fwrt->trans->dbg.imr_data.imr2sram_remainbyte -= size_to_dump;

        iwl_trans_read_mem_bytes_no_grab(fwrt->trans, sram_addr, range->data,
                                         size_to_dump);
        return sizeof(*range) + le32_to_cpu(range->range_data_size);
}

static void *
iwl_dump_ini_mem_fill_header(struct iwl_fw_runtime *fwrt,
                             struct iwl_dump_ini_region_data *reg_data,
                             void *data, u32 data_len)
{
        struct iwl_fw_ini_error_dump *dump = data;

        dump->header.version = cpu_to_le32(IWL_INI_DUMP_VER);

        return dump->data;
}

/**
 * mask_apply_and_normalize - applies mask on val and normalize the result
 *
 * @val: value
 * @mask: mask to apply and to normalize with
 *
 * The normalization is based on the first set bit in the mask
 *
 * Returns: the extracted value
 */
static u32 mask_apply_and_normalize(u32 val, u32 mask)
{
        return (val & mask) >> (ffs(mask) - 1);
}

static __le32 iwl_get_mon_reg(struct iwl_fw_runtime *fwrt, u32 alloc_id,
                              const struct iwl_fw_mon_reg *reg_info)
{
        u32 val, offs;

        /* The header addresses of DBGCi is calculate as follows:
         * DBGC1 address + (0x100 * i)
         */
        offs = (alloc_id - IWL_FW_INI_ALLOCATION_ID_DBGC1) * 0x100;

        if (!reg_info || !reg_info->addr || !reg_info->mask)
                return 0;

        val = iwl_trans_read_prph(fwrt->trans, reg_info->addr + offs);

        return cpu_to_le32(mask_apply_and_normalize(val, reg_info->mask));
}

static void *
iwl_dump_ini_mon_fill_header(struct iwl_fw_runtime *fwrt, u32 alloc_id,
                             struct iwl_fw_ini_monitor_dump *data,
                             const struct iwl_fw_mon_regs *addrs)
{
        data->write_ptr = iwl_get_mon_reg(fwrt, alloc_id,
                                          &addrs->write_ptr);
        if (fwrt->trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
                u32 wrt_ptr = le32_to_cpu(data->write_ptr);

                data->write_ptr = cpu_to_le32(wrt_ptr >> 2);
        }
        data->cycle_cnt = iwl_get_mon_reg(fwrt, alloc_id,
                                          &addrs->cycle_cnt);
        data->cur_frag = iwl_get_mon_reg(fwrt, alloc_id,
                                         &addrs->cur_frag);

        data->header.version = cpu_to_le32(IWL_INI_DUMP_VER);

        return data->data;
}

static void *
iwl_dump_ini_mon_dram_fill_header(struct iwl_fw_runtime *fwrt,
                                  struct iwl_dump_ini_region_data *reg_data,
                                  void *data, u32 data_len)
{
        struct iwl_fw_ini_monitor_dump *mon_dump = (void *)data;
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        u32 alloc_id = le32_to_cpu(reg->dram_alloc_id);

        return iwl_dump_ini_mon_fill_header(fwrt, alloc_id, mon_dump,
                                            &fwrt->trans->mac_cfg->base->mon_dram_regs);
}

static void *
iwl_dump_ini_mon_smem_fill_header(struct iwl_fw_runtime *fwrt,
                                  struct iwl_dump_ini_region_data *reg_data,
                                  void *data, u32 data_len)
{
        struct iwl_fw_ini_monitor_dump *mon_dump = (void *)data;
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        u32 alloc_id = le32_to_cpu(reg->internal_buffer.alloc_id);

        return iwl_dump_ini_mon_fill_header(fwrt, alloc_id, mon_dump,
                                            &fwrt->trans->mac_cfg->base->mon_smem_regs);
}

static void *
iwl_dump_ini_mon_dbgi_fill_header(struct iwl_fw_runtime *fwrt,
                                  struct iwl_dump_ini_region_data *reg_data,
                                  void *data, u32 data_len)
{
        struct iwl_fw_ini_monitor_dump *mon_dump = (void *)data;

        return iwl_dump_ini_mon_fill_header(fwrt,
                                            /* no offset calculation later */
                                            IWL_FW_INI_ALLOCATION_ID_DBGC1,
                                            mon_dump,
                                            &fwrt->trans->mac_cfg->base->mon_dbgi_regs);
}

static void *
iwl_dump_ini_err_table_fill_header(struct iwl_fw_runtime *fwrt,
                                   struct iwl_dump_ini_region_data *reg_data,
                                   void *data, u32 data_len)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        struct iwl_fw_ini_err_table_dump *dump = data;

        dump->header.version = cpu_to_le32(IWL_INI_DUMP_VER);
        dump->version = reg->err_table.version;

        return dump->data;
}

static void *
iwl_dump_ini_special_mem_fill_header(struct iwl_fw_runtime *fwrt,
                                     struct iwl_dump_ini_region_data *reg_data,
                                     void *data, u32 data_len)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        struct iwl_fw_ini_special_device_memory *dump = data;

        dump->header.version = cpu_to_le32(IWL_INI_DUMP_VER);
        dump->type = reg->special_mem.type;
        dump->version = reg->special_mem.version;

        return dump->data;
}

static void *
iwl_dump_ini_imr_fill_header(struct iwl_fw_runtime *fwrt,
                             struct iwl_dump_ini_region_data *reg_data,
                             void *data, u32 data_len)
{
        struct iwl_fw_ini_error_dump *dump = data;

        dump->header.version = cpu_to_le32(IWL_INI_DUMP_VER);

        return dump->data;
}

static u32 iwl_dump_ini_mem_ranges(struct iwl_fw_runtime *fwrt,
                                   struct iwl_dump_ini_region_data *reg_data)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;

        return iwl_tlv_array_len(reg_data->reg_tlv, reg, addrs);
}

static u32
iwl_dump_ini_mem_block_ranges(struct iwl_fw_runtime *fwrt,
                              struct iwl_dump_ini_region_data *reg_data)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        size_t size = sizeof(struct iwl_fw_ini_addr_size);

        return iwl_tlv_array_len_with_size(reg_data->reg_tlv, reg, size);
}

static u32 iwl_dump_ini_paging_ranges(struct iwl_fw_runtime *fwrt,
                                      struct iwl_dump_ini_region_data *reg_data)
{
        if (fwrt->trans->mac_cfg->gen2) {
                if (fwrt->trans->init_dram.paging_cnt)
                        return fwrt->trans->init_dram.paging_cnt - 1;
                else
                        return 0;
        }

        return fwrt->num_of_paging_blk;
}

static u32
iwl_dump_ini_mon_dram_ranges(struct iwl_fw_runtime *fwrt,
                             struct iwl_dump_ini_region_data *reg_data)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        struct iwl_fw_mon *fw_mon;
        u32 ranges = 0, alloc_id = le32_to_cpu(reg->dram_alloc_id);
        int i;

        fw_mon = &fwrt->trans->dbg.fw_mon_ini[alloc_id];

        for (i = 0; i < fw_mon->num_frags; i++) {
                if (!fw_mon->frags[i].size)
                        break;

                ranges++;
        }

        return ranges;
}

static u32 iwl_dump_ini_txf_ranges(struct iwl_fw_runtime *fwrt,
                                   struct iwl_dump_ini_region_data *reg_data)
{
        u32 num_of_fifos = 0;

        while (iwl_ini_txf_iter(fwrt, reg_data, num_of_fifos))
                num_of_fifos++;

        return num_of_fifos;
}

static u32 iwl_dump_ini_single_range(struct iwl_fw_runtime *fwrt,
                                     struct iwl_dump_ini_region_data *reg_data)
{
        return 1;
}

static u32 iwl_dump_ini_imr_ranges(struct iwl_fw_runtime *fwrt,
                                   struct iwl_dump_ini_region_data *reg_data)
{
        /* range is total number of pages need to copied from
         *IMR memory to SRAM and later from SRAM to DRAM
         */
        u32 imr_enable = fwrt->trans->dbg.imr_data.imr_enable;
        u32 imr_size = fwrt->trans->dbg.imr_data.imr_size;
        u32 sram_size = fwrt->trans->dbg.imr_data.sram_size;

        if (imr_enable == 0 || imr_size == 0 || sram_size == 0) {
                IWL_DEBUG_INFO(fwrt,
                               "WRT: Invalid imr data enable: %d, imr_size: %d, sram_size: %d\n",
                               imr_enable, imr_size, sram_size);
                return 0;
        }

        return((imr_size % sram_size) ? (imr_size / sram_size + 1) : (imr_size / sram_size));
}

static u32 iwl_dump_ini_mem_get_size(struct iwl_fw_runtime *fwrt,
                                     struct iwl_dump_ini_region_data *reg_data)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        u32 size = le32_to_cpu(reg->dev_addr.size);
        u32 ranges = iwl_dump_ini_mem_ranges(fwrt, reg_data);

        if (!size || !ranges)
                return 0;

        return sizeof(struct iwl_fw_ini_error_dump) + ranges *
                (size + sizeof(struct iwl_fw_ini_error_dump_range));
}

static u32
iwl_dump_ini_mem_block_get_size(struct iwl_fw_runtime *fwrt,
                                struct iwl_dump_ini_region_data *reg_data)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        struct iwl_fw_ini_addr_size *pairs = (void *)reg->addrs;
        u32 ranges = iwl_dump_ini_mem_block_ranges(fwrt, reg_data);
        u32 size = sizeof(struct iwl_fw_ini_error_dump);
        int range;

        if (!ranges)
                return 0;

        for (range = 0; range < ranges; range++)
                size += le32_to_cpu(pairs[range].size);

        return size + ranges * sizeof(struct iwl_fw_ini_error_dump_range);
}

static u32
iwl_dump_ini_paging_get_size(struct iwl_fw_runtime *fwrt,
                             struct iwl_dump_ini_region_data *reg_data)
{
        int i;
        u32 range_header_len = sizeof(struct iwl_fw_ini_error_dump_range);
        u32 size = sizeof(struct iwl_fw_ini_error_dump);

        /* start from 1 to skip CSS section */
        for (i = 1; i <= iwl_dump_ini_paging_ranges(fwrt, reg_data); i++) {
                size += range_header_len;
                if (fwrt->trans->mac_cfg->gen2)
                        size += fwrt->trans->init_dram.paging[i].size;
                else
                        size += fwrt->fw_paging_db[i].fw_paging_size;
        }

        return size;
}

static u32
iwl_dump_ini_mon_dram_get_size(struct iwl_fw_runtime *fwrt,
                               struct iwl_dump_ini_region_data *reg_data)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        struct iwl_fw_mon *fw_mon;
        u32 size = 0, alloc_id = le32_to_cpu(reg->dram_alloc_id);
        int i;

        fw_mon = &fwrt->trans->dbg.fw_mon_ini[alloc_id];

        for (i = 0; i < fw_mon->num_frags; i++) {
                struct iwl_dram_data *frag = &fw_mon->frags[i];

                if (!frag->size)
                        break;

                size += sizeof(struct iwl_fw_ini_error_dump_range) + frag->size;
        }

        if (size)
                size += sizeof(struct iwl_fw_ini_monitor_dump);

        return size;
}

static u32
iwl_dump_ini_mon_smem_get_size(struct iwl_fw_runtime *fwrt,
                               struct iwl_dump_ini_region_data *reg_data)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        u32 size;

        size = le32_to_cpu(reg->internal_buffer.size);
        if (!size)
                return 0;

        size += sizeof(struct iwl_fw_ini_monitor_dump) +
                sizeof(struct iwl_fw_ini_error_dump_range);

        return size;
}

static u32 iwl_dump_ini_mon_dbgi_get_size(struct iwl_fw_runtime *fwrt,
                                          struct iwl_dump_ini_region_data *reg_data)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        u32 size = le32_to_cpu(reg->dev_addr.size);
        u32 ranges = iwl_dump_ini_mem_ranges(fwrt, reg_data);

        if (!size || !ranges)
                return 0;

        return sizeof(struct iwl_fw_ini_monitor_dump) + ranges *
                (size + sizeof(struct iwl_fw_ini_error_dump_range));
}

static u32 iwl_dump_ini_txf_get_size(struct iwl_fw_runtime *fwrt,
                                     struct iwl_dump_ini_region_data *reg_data)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        struct iwl_txf_iter_data *iter = &fwrt->dump.txf_iter_data;
        u32 registers_num = iwl_tlv_array_len(reg_data->reg_tlv, reg, addrs);
        u32 size = 0;
        u32 fifo_hdr = sizeof(struct iwl_fw_ini_error_dump_range) +
                       registers_num *
                       sizeof(struct iwl_fw_ini_error_dump_register);

        while (iwl_ini_txf_iter(fwrt, reg_data, size)) {
                size += fifo_hdr;
                if (!reg->fifos.hdr_only)
                        size += iter->fifo_size;
        }

        if (!size)
                return 0;

        return size + sizeof(struct iwl_fw_ini_error_dump);
}

static u32 iwl_dump_ini_rxf_get_size(struct iwl_fw_runtime *fwrt,
                                     struct iwl_dump_ini_region_data *reg_data)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        struct iwl_ini_rxf_data rx_data;
        u32 registers_num = iwl_tlv_array_len(reg_data->reg_tlv, reg, addrs);
        u32 size = sizeof(struct iwl_fw_ini_error_dump) +
                sizeof(struct iwl_fw_ini_error_dump_range) +
                registers_num * sizeof(struct iwl_fw_ini_error_dump_register);

        if (reg->fifos.hdr_only)
                return size;

        iwl_ini_get_rxf_data(fwrt, reg_data, &rx_data);
        size += rx_data.size;

        return size;
}

static u32
iwl_dump_ini_err_table_get_size(struct iwl_fw_runtime *fwrt,
                                struct iwl_dump_ini_region_data *reg_data)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        u32 size = le32_to_cpu(reg->err_table.size);

        if (size)
                size += sizeof(struct iwl_fw_ini_err_table_dump) +
                        sizeof(struct iwl_fw_ini_error_dump_range);

        return size;
}

static u32
iwl_dump_ini_special_mem_get_size(struct iwl_fw_runtime *fwrt,
                                  struct iwl_dump_ini_region_data *reg_data)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        u32 size = le32_to_cpu(reg->special_mem.size);

        if (size)
                size += sizeof(struct iwl_fw_ini_special_device_memory) +
                        sizeof(struct iwl_fw_ini_error_dump_range);

        return size;
}

static u32
iwl_dump_ini_fw_pkt_get_size(struct iwl_fw_runtime *fwrt,
                             struct iwl_dump_ini_region_data *reg_data)
{
        u32 size = 0;

        if (!reg_data->dump_data->fw_pkt)
                return 0;

        size += iwl_rx_packet_payload_len(reg_data->dump_data->fw_pkt);
        if (size)
                size += sizeof(struct iwl_fw_ini_error_dump) +
                        sizeof(struct iwl_fw_ini_error_dump_range);

        return size;
}

static u32
iwl_dump_ini_imr_get_size(struct iwl_fw_runtime *fwrt,
                          struct iwl_dump_ini_region_data *reg_data)
{
        u32 ranges = 0;
        u32 imr_enable = fwrt->trans->dbg.imr_data.imr_enable;
        u32 imr_size = fwrt->trans->dbg.imr_data.imr_size;
        u32 sram_size = fwrt->trans->dbg.imr_data.sram_size;

        if (imr_enable == 0 || imr_size == 0 || sram_size == 0) {
                IWL_DEBUG_INFO(fwrt,
                               "WRT: Invalid imr data enable: %d, imr_size: %d, sram_size: %d\n",
                               imr_enable, imr_size, sram_size);
                return 0;
        }
        ranges = iwl_dump_ini_imr_ranges(fwrt, reg_data);
        if (!ranges) {
                IWL_ERR(fwrt, "WRT: ranges :=%d\n", ranges);
                return 0;
        }
        imr_size += sizeof(struct iwl_fw_ini_error_dump) +
                ranges * sizeof(struct iwl_fw_ini_error_dump_range);
        return imr_size;
}

/**
 * struct iwl_dump_ini_mem_ops - ini memory dump operations
 * @get_num_of_ranges: returns the number of memory ranges in the region.
 * @get_size: returns the total size of the region.
 * @fill_mem_hdr: fills region type specific headers and returns pointer to
 *      the first range or NULL if failed to fill headers.
 * @fill_range: copies a given memory range into the dump.
 *      Returns the size of the range or negative error value otherwise.
 * @requires_nic_access: indicates to dump only if NIC access was acquired
 */
struct iwl_dump_ini_mem_ops {
        u32 (*get_num_of_ranges)(struct iwl_fw_runtime *fwrt,
                                 struct iwl_dump_ini_region_data *reg_data);
        u32 (*get_size)(struct iwl_fw_runtime *fwrt,
                        struct iwl_dump_ini_region_data *reg_data);
        void *(*fill_mem_hdr)(struct iwl_fw_runtime *fwrt,
                              struct iwl_dump_ini_region_data *reg_data,
                              void *data, u32 data_len);
        int (*fill_range)(struct iwl_fw_runtime *fwrt,
                          struct iwl_dump_ini_region_data *reg_data,
                          void *range, int idx);
        bool requires_nic_access;
};

struct iwl_fw_ini_dump_entry {
        const struct iwl_dump_ini_mem_ops *ops;
        struct iwl_dump_ini_region_data reg_data;
        struct list_head list;
        u32 region_dump_policy;
        u32 size;
        u8 data[];
} __packed;

static void iwl_dump_ini_mem_prep(struct iwl_fw_runtime *fwrt,
                                  struct list_head *list,
                                  struct iwl_dump_ini_region_data *reg_data,
                                  const struct iwl_dump_ini_mem_ops *ops)
{
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        struct iwl_fw_ini_dump_entry *entry;
        struct iwl_fw_ini_error_dump_data *tlv;
        struct iwl_fw_ini_error_dump_header *header;
        u32 type = reg->type;
        u32 id = le32_get_bits(reg->id, IWL_FW_INI_REGION_ID_MASK);
        u32 num_of_ranges, size;
        u32 dump_policy = IWL_FW_INI_DUMP_VERBOSE;
        u32 dp;

        IWL_DEBUG_FW(fwrt, "WRT: Collecting region: dump type=%d, id=%d, type=%d\n",
                     dump_policy, id, type);

        if (le32_to_cpu(reg->hdr.version) >= 2) {
                dp = le32_get_bits(reg->id, IWL_FW_INI_REGION_DUMP_POLICY_MASK);

                if (dump_policy == IWL_FW_INI_DUMP_VERBOSE &&
                    !(dp & IWL_FW_INI_DEBUG_DUMP_POLICY_NO_LIMIT)) {
                        IWL_DEBUG_FW(fwrt,
                                     "WRT: no dump - type %d and policy mismatch=%d\n",
                                     dump_policy, dp);
                        return;
                } else if (dump_policy == IWL_FW_INI_DUMP_MEDIUM &&
                           !(dp & IWL_FW_IWL_DEBUG_DUMP_POLICY_MAX_LIMIT_5MB)) {
                        IWL_DEBUG_FW(fwrt,
                                     "WRT: no dump - type %d and policy mismatch=%d\n",
                                     dump_policy, dp);
                        return;
                } else if (dump_policy == IWL_FW_INI_DUMP_BRIEF &&
                           !(dp & IWL_FW_INI_DEBUG_DUMP_POLICY_MAX_LIMIT_600KB)) {
                        IWL_DEBUG_FW(fwrt,
                                     "WRT: no dump - type %d and policy mismatch=%d\n",
                                     dump_policy, dp);
                        return;
                }
        } else {
                dp = 0;
        }

        if (!ops->get_num_of_ranges || !ops->get_size || !ops->fill_mem_hdr ||
            !ops->fill_range) {
                IWL_DEBUG_FW(fwrt, "WRT: no ops for collecting data\n");
                return;
        }

        size = ops->get_size(fwrt, reg_data);

        if (size < sizeof(*header)) {
                IWL_DEBUG_FW(fwrt, "WRT: size didn't include space for header\n");
                return;
        }

        entry = vzalloc(sizeof(*entry) + sizeof(*tlv) + size);
        if (!entry)
                return;

        entry->size = sizeof(*tlv) + size;
        entry->reg_data = *reg_data;
        entry->region_dump_policy = dp;

        tlv = (void *)entry->data;
        tlv->type = reg->type;
        tlv->sub_type = reg->sub_type;
        tlv->sub_type_ver = reg->sub_type_ver;
        tlv->reserved = reg->reserved;
        tlv->len = cpu_to_le32(size);

        num_of_ranges = ops->get_num_of_ranges(fwrt, reg_data);

        header = (void *)tlv->data;
        header->region_id = cpu_to_le32(id);
        header->num_of_ranges = cpu_to_le32(num_of_ranges);
        header->name_len = cpu_to_le32(IWL_FW_INI_MAX_NAME);
        memcpy(header->name, reg->name, IWL_FW_INI_MAX_NAME);

        entry->ops = ops;
        list_add_tail(&entry->list, list);
}

static u32 iwl_dump_ini_mem(struct iwl_fw_runtime *fwrt,
                            struct iwl_fw_ini_dump_entry *entry,
                            bool have_nic_access)
{
        struct iwl_dump_ini_region_data *reg_data = &entry->reg_data;
        struct iwl_fw_ini_region_tlv *reg = (void *)reg_data->reg_tlv->data;
        const struct iwl_dump_ini_mem_ops *ops = entry->ops;
        struct iwl_fw_ini_error_dump_data *tlv;
        struct iwl_fw_ini_error_dump_header *header;
        u32 type = reg->type;
        u32 id = le32_get_bits(reg->id, IWL_FW_INI_REGION_ID_MASK);
        u32 i;
        u8 *range;
        u32 free_size;
        u64 header_size;

        if (!have_nic_access && ops->requires_nic_access)
                goto out_err;

        tlv = (void *)entry->data;
        header = (void *)tlv->data;

        free_size = entry->size - sizeof(*tlv);
        range = ops->fill_mem_hdr(fwrt, reg_data, header, free_size);
        if (!range) {
                IWL_ERR(fwrt,
                        "WRT: Failed to fill region header: id=%d, type=%d\n",
                        id, type);
                goto out_err;
        }

        header_size = range - (u8 *)header;

        if (WARN(header_size > free_size,
                 "header size %llu > free_size %d",
                 header_size, free_size)) {
                IWL_ERR(fwrt,
                        "WRT: fill_mem_hdr used more than given free_size\n");
                goto out_err;
        }

        free_size -= header_size;

        for (i = 0; i < le32_to_cpu(header->num_of_ranges); i++) {
                int range_size = ops->fill_range(fwrt, reg_data, range, i);

                if (range_size < 0) {
                        IWL_ERR(fwrt,
                                "WRT: Failed to dump region: id=%d, type=%d\n",
                                id, type);
                        goto out_err;
                }

                if (WARN(range_size > free_size, "range_size %d > free_size %d",
                         range_size, free_size)) {
                        IWL_ERR(fwrt,
                                "WRT: fill_raged used more than given free_size\n");
                        goto out_err;
                }

                free_size -= range_size;
                range = range + range_size;
        }

        return entry->size;

out_err:
        list_del(&entry->list);
        vfree(entry);

        return 0;
}

static u32 iwl_dump_ini_info(struct iwl_fw_runtime *fwrt,
                             struct iwl_fw_ini_trigger_tlv *trigger,
                             struct list_head *list)
{
        struct iwl_fw_ini_dump_entry *entry;
        struct iwl_fw_error_dump_data *tlv;
        struct iwl_fw_ini_dump_info *dump;
        struct iwl_dbg_tlv_node *node;
        struct iwl_fw_ini_dump_cfg_name *cfg_name;
        u32 size = sizeof(*tlv) + sizeof(*dump);
        u32 num_of_cfg_names = 0;
        u32 hw_type, is_cdb;

        list_for_each_entry(node, &fwrt->trans->dbg.debug_info_tlv_list, list) {
                size += sizeof(*cfg_name);
                num_of_cfg_names++;
        }

        entry = vzalloc(sizeof(*entry) + size);
        if (!entry)
                return 0;

        entry->size = size;

        tlv = (void *)entry->data;
        tlv->type = cpu_to_le32(IWL_INI_DUMP_INFO_TYPE);
        tlv->len = cpu_to_le32(size - sizeof(*tlv));

        dump = (void *)tlv->data;

        dump->version = cpu_to_le32(IWL_INI_DUMP_VER);
        dump->time_point = trigger->time_point;
        dump->trigger_reason = trigger->trigger_reason;
        dump->external_cfg_state =
                cpu_to_le32(fwrt->trans->dbg.external_ini_cfg);

        dump->ver_type = cpu_to_le32(fwrt->dump.fw_ver.type);
        dump->ver_subtype = cpu_to_le32(fwrt->dump.fw_ver.subtype);

        dump->hw_step = cpu_to_le32(fwrt->trans->info.hw_rev_step);

        hw_type = CSR_HW_REV_TYPE(fwrt->trans->info.hw_rev);

        is_cdb = CSR_HW_RFID_IS_CDB(fwrt->trans->info.hw_rf_id);
        hw_type |= IWL_CDB_MASK(is_cdb);

        dump->hw_type = cpu_to_le32(hw_type);

        dump->rf_id_flavor =
                cpu_to_le32(CSR_HW_RFID_FLAVOR(fwrt->trans->info.hw_rf_id));
        dump->rf_id_dash = cpu_to_le32(CSR_HW_RFID_DASH(fwrt->trans->info.hw_rf_id));
        dump->rf_id_step = cpu_to_le32(CSR_HW_RFID_STEP(fwrt->trans->info.hw_rf_id));
        dump->rf_id_type = cpu_to_le32(CSR_HW_RFID_TYPE(fwrt->trans->info.hw_rf_id));

        dump->lmac_major = cpu_to_le32(fwrt->dump.fw_ver.lmac_major);
        dump->lmac_minor = cpu_to_le32(fwrt->dump.fw_ver.lmac_minor);
        dump->umac_major = cpu_to_le32(fwrt->dump.fw_ver.umac_major);
        dump->umac_minor = cpu_to_le32(fwrt->dump.fw_ver.umac_minor);

        dump->fw_mon_mode = cpu_to_le32(fwrt->trans->dbg.ini_dest);
        dump->regions_mask = trigger->regions_mask &
                             ~cpu_to_le64(fwrt->trans->dbg.unsupported_region_msk);

        dump->build_tag_len = cpu_to_le32(sizeof(dump->build_tag));
        memcpy(dump->build_tag, fwrt->fw->human_readable,
               sizeof(dump->build_tag));

        cfg_name = dump->cfg_names;
        dump->num_of_cfg_names = cpu_to_le32(num_of_cfg_names);
        list_for_each_entry(node, &fwrt->trans->dbg.debug_info_tlv_list, list) {
                struct iwl_fw_ini_debug_info_tlv *debug_info =
                        (void *)node->tlv.data;

                BUILD_BUG_ON(sizeof(cfg_name->cfg_name) !=
                             sizeof(debug_info->debug_cfg_name));

                cfg_name->image_type = debug_info->image_type;
                cfg_name->cfg_name_len =
                        cpu_to_le32(sizeof(cfg_name->cfg_name));
                memcpy(cfg_name->cfg_name, debug_info->debug_cfg_name,
                       sizeof(cfg_name->cfg_name));
                cfg_name++;
        }

        /* add dump info TLV to the beginning of the list since it needs to be
         * the first TLV in the dump
         */
        list_add(&entry->list, list);

        return entry->size;
}

static const struct iwl_dump_ini_mem_ops iwl_dump_ini_region_ops[] = {
        [IWL_FW_INI_REGION_INVALID] = {},
        [IWL_FW_INI_REGION_INTERNAL_BUFFER] = {
                .get_num_of_ranges = iwl_dump_ini_single_range,
                .get_size = iwl_dump_ini_mon_smem_get_size,
                .fill_mem_hdr = iwl_dump_ini_mon_smem_fill_header,
                .fill_range = iwl_dump_ini_mon_smem_iter,
                .requires_nic_access = true,
        },
        [IWL_FW_INI_REGION_DRAM_BUFFER] = {
                .get_num_of_ranges = iwl_dump_ini_mon_dram_ranges,
                .get_size = iwl_dump_ini_mon_dram_get_size,
                .fill_mem_hdr = iwl_dump_ini_mon_dram_fill_header,
                .fill_range = iwl_dump_ini_mon_dram_iter,
                .requires_nic_access = true,
        },
        [IWL_FW_INI_REGION_TXF] = {
                .get_num_of_ranges = iwl_dump_ini_txf_ranges,
                .get_size = iwl_dump_ini_txf_get_size,
                .fill_mem_hdr = iwl_dump_ini_mem_fill_header,
                .fill_range = iwl_dump_ini_txf_iter,
                .requires_nic_access = true,
        },
        [IWL_FW_INI_REGION_RXF] = {
                .get_num_of_ranges = iwl_dump_ini_single_range,
                .get_size = iwl_dump_ini_rxf_get_size,
                .fill_mem_hdr = iwl_dump_ini_mem_fill_header,
                .fill_range = iwl_dump_ini_rxf_iter,
                .requires_nic_access = true,
        },
        [IWL_FW_INI_REGION_LMAC_ERROR_TABLE] = {
                .get_num_of_ranges = iwl_dump_ini_single_range,
                .get_size = iwl_dump_ini_err_table_get_size,
                .fill_mem_hdr = iwl_dump_ini_err_table_fill_header,
                .fill_range = iwl_dump_ini_err_table_iter,
                .requires_nic_access = true,
        },
        [IWL_FW_INI_REGION_UMAC_ERROR_TABLE] = {
                .get_num_of_ranges = iwl_dump_ini_single_range,
                .get_size = iwl_dump_ini_err_table_get_size,
                .fill_mem_hdr = iwl_dump_ini_err_table_fill_header,
                .fill_range = iwl_dump_ini_err_table_iter,
                .requires_nic_access = true,
        },
        [IWL_FW_INI_REGION_RSP_OR_NOTIF] = {
                .get_num_of_ranges = iwl_dump_ini_single_range,
                .get_size = iwl_dump_ini_fw_pkt_get_size,
                .fill_mem_hdr = iwl_dump_ini_mem_fill_header,
                .fill_range = iwl_dump_ini_fw_pkt_iter,
        },
        [IWL_FW_INI_REGION_DEVICE_MEMORY] = {
                .get_num_of_ranges = iwl_dump_ini_mem_ranges,
                .get_size = iwl_dump_ini_mem_get_size,
                .fill_mem_hdr = iwl_dump_ini_mem_fill_header,
                .fill_range = iwl_dump_ini_dev_mem_iter,
                .requires_nic_access = true,
        },
        [IWL_FW_INI_REGION_PERIPHERY_MAC] = {
                .get_num_of_ranges = iwl_dump_ini_mem_ranges,
                .get_size = iwl_dump_ini_mem_get_size,
                .fill_mem_hdr = iwl_dump_ini_mem_fill_header,
                .fill_range = iwl_dump_ini_prph_mac_iter,
                .requires_nic_access = true,
        },
        [IWL_FW_INI_REGION_PERIPHERY_PHY] = {
                .get_num_of_ranges = iwl_dump_ini_mem_ranges,
                .get_size = iwl_dump_ini_mem_get_size,
                .fill_mem_hdr = iwl_dump_ini_mem_fill_header,
                .fill_range = iwl_dump_ini_prph_phy_iter,
                .requires_nic_access = true,
        },
        [IWL_FW_INI_REGION_PERIPHERY_MAC_RANGE] = {
                .get_num_of_ranges = iwl_dump_ini_mem_block_ranges,
                .get_size = iwl_dump_ini_mem_block_get_size,
                .fill_mem_hdr = iwl_dump_ini_mem_fill_header,
                .fill_range = iwl_dump_ini_prph_mac_block_iter,
                .requires_nic_access = true,
        },
        [IWL_FW_INI_REGION_PERIPHERY_PHY_RANGE] = {
                .get_num_of_ranges = iwl_dump_ini_mem_block_ranges,
                .get_size = iwl_dump_ini_mem_block_get_size,
                .fill_mem_hdr = iwl_dump_ini_mem_fill_header,
                .fill_range = iwl_dump_ini_prph_phy_block_iter,
                .requires_nic_access = true,
        },
        [IWL_FW_INI_REGION_PERIPHERY_AUX] = {},
        [IWL_FW_INI_REGION_PAGING] = {
                .fill_mem_hdr = iwl_dump_ini_mem_fill_header,
                .get_num_of_ranges = iwl_dump_ini_paging_ranges,
                .get_size = iwl_dump_ini_paging_get_size,
                .fill_range = iwl_dump_ini_paging_iter,
        },
        [IWL_FW_INI_REGION_CSR] = {
                .get_num_of_ranges = iwl_dump_ini_mem_ranges,
                .get_size = iwl_dump_ini_mem_get_size,
                .fill_mem_hdr = iwl_dump_ini_mem_fill_header,
                .fill_range = iwl_dump_ini_csr_iter,
        },
        [IWL_FW_INI_REGION_DRAM_IMR] = {
                .get_num_of_ranges = iwl_dump_ini_imr_ranges,
                .get_size = iwl_dump_ini_imr_get_size,
                .fill_mem_hdr = iwl_dump_ini_imr_fill_header,
                .fill_range = iwl_dump_ini_imr_iter,
                .requires_nic_access = true,
        },
        [IWL_FW_INI_REGION_PCI_IOSF_CONFIG] = {
                .get_num_of_ranges = iwl_dump_ini_mem_ranges,
                .get_size = iwl_dump_ini_mem_get_size,
                .fill_mem_hdr = iwl_dump_ini_mem_fill_header,
                .fill_range = iwl_dump_ini_config_iter,
        },
        [IWL_FW_INI_REGION_SPECIAL_DEVICE_MEMORY] = {
                .get_num_of_ranges = iwl_dump_ini_single_range,
                .get_size = iwl_dump_ini_special_mem_get_size,
                .fill_mem_hdr = iwl_dump_ini_special_mem_fill_header,
                .fill_range = iwl_dump_ini_special_mem_iter,
                .requires_nic_access = true,
        },
        [IWL_FW_INI_REGION_DBGI_SRAM] = {
                .get_num_of_ranges = iwl_dump_ini_mem_ranges,
                .get_size = iwl_dump_ini_mon_dbgi_get_size,
                .fill_mem_hdr = iwl_dump_ini_mon_dbgi_fill_header,
                .fill_range = iwl_dump_ini_dbgi_sram_iter,
                .requires_nic_access = true,
        },
        [IWL_FW_INI_REGION_PERIPHERY_SNPS_DPHYIP] = {
                .get_num_of_ranges = iwl_dump_ini_mem_ranges,
                .get_size = iwl_dump_ini_mem_get_size,
                .fill_mem_hdr = iwl_dump_ini_mem_fill_header,
                .fill_range = iwl_dump_ini_prph_snps_dphyip_iter,
                .requires_nic_access = true,
        },
};

enum iwl_dump_ini_region_selector {
        IWL_INI_DUMP_ALL_REGIONS,
        IWL_INI_DUMP_EARLY_REGIONS,
        IWL_INI_DUMP_LATE_REGIONS,
};

static bool iwl_dump_due_to_error(enum iwl_fw_ini_time_point tp_id)
{
        return tp_id == IWL_FW_INI_TIME_POINT_FW_ASSERT ||
               tp_id == IWL_FW_INI_TIME_POINT_FW_HW_ERROR;
}

static void
iwl_dump_ini_dump_regions_prep(struct iwl_fw_runtime *fwrt,
                               struct iwl_fwrt_dump_data *dump_data,
                               struct list_head *list,
                               enum iwl_fw_ini_time_point tp_id,
                               u64 regions_mask,
                               struct iwl_ucode_tlv **imr_tlv)
{
        for (int i = 0; i < ARRAY_SIZE(fwrt->trans->dbg.active_regions); i++) {
                struct iwl_dump_ini_region_data reg_data = {
                        .dump_data = dump_data,
                };
                u32 reg_type;
                struct iwl_fw_ini_region_tlv *reg;

                if (!(BIT_ULL(i) & regions_mask))
                        continue;

                reg_data.reg_tlv = fwrt->trans->dbg.active_regions[i];
                if (!reg_data.reg_tlv) {
                        IWL_WARN(fwrt,
                                 "WRT: Unassigned region id %d, skipping\n", i);
                        continue;
                }

                reg = (void *)reg_data.reg_tlv->data;
                reg_type = reg->type;
                if (reg_type >= ARRAY_SIZE(iwl_dump_ini_region_ops))
                        continue;

                if ((reg_type == IWL_FW_INI_REGION_PERIPHERY_PHY ||
                     reg_type == IWL_FW_INI_REGION_PERIPHERY_PHY_RANGE ||
                     reg_type == IWL_FW_INI_REGION_PERIPHERY_SNPS_DPHYIP) &&
                    tp_id != IWL_FW_INI_TIME_POINT_FW_ASSERT) {
                        IWL_WARN(fwrt,
                                 "WRT: trying to collect phy prph at time point: %d, skipping\n",
                                 tp_id);
                        continue;
                }

                /*
                 * DRAM_IMR can be collected only for FW/HW error timepoint
                 * when fw is not alive. In addition, it must be collected
                 * lastly as it overwrites SRAM that can possibly contain
                 * debug data which also need to be collected.
                 */
                if (reg_type == IWL_FW_INI_REGION_DRAM_IMR) {
                        if (iwl_dump_due_to_error(tp_id))
                                *imr_tlv = fwrt->trans->dbg.active_regions[i];
                        else
                                IWL_INFO(fwrt,
                                         "WRT: trying to collect DRAM_IMR at time point: %d, skipping\n",
                                         tp_id);
                        /* continue to next region */
                        continue;
                }

                iwl_dump_ini_mem_prep(fwrt, list, &reg_data,
                                      &iwl_dump_ini_region_ops[reg_type]);
        }
}

static u32
iwl_dump_ini_dump_entries(struct iwl_fw_runtime *fwrt,
                          struct list_head *list,
                          enum iwl_dump_ini_region_selector which)
{
        struct iwl_fw_ini_dump_entry *entry, *tmp;
        bool have_nic_access;
        u32 size = 0;

        have_nic_access = iwl_trans_grab_nic_access(fwrt->trans);

        list_for_each_entry_safe(entry, tmp, list, list) {
                u32 dp = entry->region_dump_policy;

                switch (which) {
                case IWL_INI_DUMP_ALL_REGIONS:
                        break;
                case IWL_INI_DUMP_EARLY_REGIONS:
                        if (!(dp & IWL_FW_IWL_DEBUG_DUMP_POLICY_BEFORE_RESET))
                                continue;
                        break;
                case IWL_INI_DUMP_LATE_REGIONS:
                        if (dp & IWL_FW_IWL_DEBUG_DUMP_POLICY_BEFORE_RESET)
                                continue;
                        break;
                }

                size += iwl_dump_ini_mem(fwrt, entry, have_nic_access);

                if (have_nic_access)
                        iwl_trans_resched_with_nic_access(fwrt->trans);
        }

        if (have_nic_access)
                iwl_trans_release_nic_access(fwrt->trans);

        return size;
}

static u32 iwl_dump_ini_trigger(struct iwl_fw_runtime *fwrt,
                                struct iwl_fwrt_dump_data *dump_data,
                                struct list_head *list)
{
        struct iwl_fw_ini_trigger_tlv *trigger = dump_data->trig;
        enum iwl_fw_ini_time_point tp_id = le32_to_cpu(trigger->time_point);
        struct iwl_dump_ini_region_data imr_reg_data = {
                .dump_data = dump_data,
        };
        u32 size = 0;
        u64 regions_mask = le64_to_cpu(trigger->regions_mask) &
                           ~(fwrt->trans->dbg.unsupported_region_msk);

        BUILD_BUG_ON(sizeof(trigger->regions_mask) != sizeof(regions_mask));
        BUILD_BUG_ON((sizeof(trigger->regions_mask) * BITS_PER_BYTE) <
                     ARRAY_SIZE(fwrt->trans->dbg.active_regions));

        iwl_dump_ini_dump_regions_prep(fwrt, dump_data, list, tp_id,
                                       regions_mask, &imr_reg_data.reg_tlv);

        /* append DRAM_IMR region to be collected last */
        if (imr_reg_data.reg_tlv)
                iwl_dump_ini_mem_prep(fwrt, list, &imr_reg_data,
                                      &iwl_dump_ini_region_ops[IWL_FW_INI_REGION_DRAM_IMR]);

        if (trigger->apply_policy &
                        cpu_to_le32(IWL_FW_INI_APPLY_POLICY_SPLIT_DUMP_RESET)) {
                size += iwl_dump_ini_dump_entries(fwrt, list,
                                                  IWL_INI_DUMP_EARLY_REGIONS);
                iwl_trans_pcie_fw_reset_handshake(fwrt->trans);
                size += iwl_dump_ini_dump_entries(fwrt, list,
                                                  IWL_INI_DUMP_LATE_REGIONS);
        } else {
                if (fw_has_capa(&fwrt->fw->ucode_capa,
                                IWL_UCODE_TLV_CAPA_RESET_DURING_ASSERT) &&
                    iwl_dump_due_to_error(tp_id))
                        iwl_trans_pcie_fw_reset_handshake(fwrt->trans);
                size += iwl_dump_ini_dump_entries(fwrt, list,
                                                  IWL_INI_DUMP_ALL_REGIONS);
        }

        if (size)
                size += iwl_dump_ini_info(fwrt, trigger, list);

        return size;
}

static bool iwl_fw_ini_trigger_on(struct iwl_fw_runtime *fwrt,
                                  struct iwl_fw_ini_trigger_tlv *trig)
{
        enum iwl_fw_ini_time_point tp_id = le32_to_cpu(trig->time_point);
        u32 usec = le32_to_cpu(trig->ignore_consec);

        if (!iwl_trans_dbg_ini_valid(fwrt->trans) ||
            tp_id == IWL_FW_INI_TIME_POINT_INVALID ||
            tp_id >= IWL_FW_INI_TIME_POINT_NUM ||
            iwl_fw_dbg_no_trig_window(fwrt, tp_id, usec))
                return false;

        return true;
}

static u32 iwl_dump_ini_file_gen(struct iwl_fw_runtime *fwrt,
                                 struct iwl_fwrt_dump_data *dump_data,
                                 struct list_head *list)
{
        struct iwl_fw_ini_trigger_tlv *trigger = dump_data->trig;
        struct iwl_fw_ini_dump_entry *entry;
        struct iwl_fw_ini_dump_file_hdr *hdr;
        u32 size;

        if (!trigger || !iwl_fw_ini_trigger_on(fwrt, trigger) ||
            !le64_to_cpu(trigger->regions_mask))
                return 0;

        entry = vzalloc(sizeof(*entry) + sizeof(*hdr));
        if (!entry)
                return 0;

        entry->size = sizeof(*hdr);

        size = iwl_dump_ini_trigger(fwrt, dump_data, list);
        if (!size) {
                vfree(entry);
                return 0;
        }

        hdr = (void *)entry->data;
        hdr->barker = cpu_to_le32(IWL_FW_INI_ERROR_DUMP_BARKER);
        hdr->file_len = cpu_to_le32(size + entry->size);

        list_add(&entry->list, list);

        return le32_to_cpu(hdr->file_len);
}

static inline void iwl_fw_free_dump_desc(struct iwl_fw_runtime *fwrt,
                                         const struct iwl_fw_dump_desc *desc)
{
        if (desc && desc != &iwl_dump_desc_assert)
                kfree(desc);

        fwrt->dump.lmac_err_id[0] = 0;
        if (fwrt->smem_cfg.num_lmacs > 1)
                fwrt->dump.lmac_err_id[1] = 0;
        fwrt->dump.umac_err_id = 0;
}

static void iwl_dump_ini_list_free(struct list_head *list)
{
        while (!list_empty(list)) {
                struct iwl_fw_ini_dump_entry *entry =
                        list_entry(list->next, typeof(*entry), list);

                list_del(&entry->list);
                vfree(entry);
        }
}

static void iwl_fw_error_dump_data_free(struct iwl_fwrt_dump_data *dump_data)
{
        dump_data->trig = NULL;
        kfree(dump_data->fw_pkt);
        dump_data->fw_pkt = NULL;
}

static void iwl_fw_error_ini_dump(struct iwl_fw_runtime *fwrt,
                                  struct iwl_fwrt_dump_data *dump_data)
{
        LIST_HEAD(dump_list);
        struct scatterlist *sg_dump_data;
        u32 file_len = iwl_dump_ini_file_gen(fwrt, dump_data, &dump_list);

        if (!file_len)
                return;

        sg_dump_data = iwl_fw_dbg_alloc_sgtable(file_len);
        if (sg_dump_data) {
                struct iwl_fw_ini_dump_entry *entry;
                int sg_entries = sg_nents(sg_dump_data);
                u32 offs = 0;

                list_for_each_entry(entry, &dump_list, list) {
                        sg_pcopy_from_buffer(sg_dump_data, sg_entries,
                                             entry->data, entry->size, offs);
                        offs += entry->size;
                }
                dev_coredumpsg(fwrt->trans->dev, sg_dump_data, file_len,
                               GFP_KERNEL);
        }
        iwl_dump_ini_list_free(&dump_list);
}

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);

int iwl_fw_dbg_collect_desc(struct iwl_fw_runtime *fwrt,
                            const struct iwl_fw_dump_desc *desc,
                            bool monitor_only,
                            unsigned int delay)
{
        struct iwl_fwrt_wk_data *wk_data;
        unsigned long idx;

        if (iwl_trans_dbg_ini_valid(fwrt->trans)) {
                iwl_fw_free_dump_desc(fwrt, desc);
                return 0;
        }

        /*
         * Check there is an available worker.
         * ffz return value is undefined if no zero exists,
         * so check against ~0UL first.
         */
        if (fwrt->dump.active_wks == ~0UL)
                return -EBUSY;

        idx = ffz(fwrt->dump.active_wks);

        if (idx >= IWL_FW_RUNTIME_DUMP_WK_NUM ||
            test_and_set_bit(fwrt->dump.wks[idx].idx, &fwrt->dump.active_wks))
                return -EBUSY;

        wk_data = &fwrt->dump.wks[idx];

        if (WARN_ON(wk_data->dump_data.desc))
                iwl_fw_free_dump_desc(fwrt, wk_data->dump_data.desc);

        wk_data->dump_data.desc = desc;
        wk_data->dump_data.monitor_only = monitor_only;

        IWL_WARN(fwrt, "Collecting data: trigger %d fired.\n",
                 le32_to_cpu(desc->trig_desc.type));

        queue_delayed_work(system_dfl_wq, &wk_data->wk,
                           usecs_to_jiffies(delay));

        return 0;
}
IWL_EXPORT_SYMBOL(iwl_fw_dbg_collect_desc);

int iwl_fw_dbg_error_collect(struct iwl_fw_runtime *fwrt,
                             enum iwl_fw_dbg_trigger trig_type)
{
        if (!iwl_trans_device_enabled(fwrt->trans))
                return -EIO;

        if (iwl_trans_dbg_ini_valid(fwrt->trans)) {
                if (trig_type != FW_DBG_TRIGGER_ALIVE_TIMEOUT &&
                    trig_type != FW_DBG_TRIGGER_DRIVER)
                        return -EIO;

                iwl_dbg_tlv_time_point(fwrt,
                                       IWL_FW_INI_TIME_POINT_HOST_ALIVE_TIMEOUT,
                                       NULL);
        } else {
                struct iwl_fw_dump_desc *iwl_dump_error_desc;
                int ret;

                iwl_dump_error_desc = kmalloc_obj(*iwl_dump_error_desc);

                if (!iwl_dump_error_desc)
                        return -ENOMEM;

                iwl_dump_error_desc->trig_desc.type = cpu_to_le32(trig_type);
                iwl_dump_error_desc->len = 0;

                ret = iwl_fw_dbg_collect_desc(fwrt, iwl_dump_error_desc,
                                              false, 0);
                if (ret) {
                        kfree(iwl_dump_error_desc);
                        return ret;
                }
        }

        iwl_trans_sync_nmi(fwrt->trans);

        return 0;
}
IWL_EXPORT_SYMBOL(iwl_fw_dbg_error_collect);

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;
        int ret;

        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);
                monitor_only = trigger->mode & IWL_FW_DBG_TRIGGER_MONITOR_ONLY;

                /* convert msec to usec */
                delay = le32_to_cpu(trigger->stop_delay) * USEC_PER_MSEC;
        }

        desc = kzalloc_flex(*desc, trig_desc.data, 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);

        ret = iwl_fw_dbg_collect_desc(fwrt, desc, monitor_only, delay);
        if (ret)
                kfree(desc);

        return ret;
}
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 len = 0;
        char buf[64];

        if (iwl_trans_dbg_ini_valid(fwrt->trans))
                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;
        }

        return iwl_fw_dbg_collect(fwrt, le32_to_cpu(trigger->id), buf, len,
                                  trigger);
}
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_INFO(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);

static void iwl_send_dbg_dump_complete_cmd(struct iwl_fw_runtime *fwrt,
                                           u32 timepoint, u32 timepoint_data)
{
        struct iwl_dbg_dump_complete_cmd hcmd_data;
        struct iwl_host_cmd hcmd = {
                .id = WIDE_ID(DEBUG_GROUP, FW_DUMP_COMPLETE_CMD),
                .data[0] = &hcmd_data,
                .len[0] = sizeof(hcmd_data),
        };

        if (iwl_trans_is_fw_error(fwrt->trans))
                return;

        if (fw_has_capa(&fwrt->fw->ucode_capa,
                        IWL_UCODE_TLV_CAPA_DUMP_COMPLETE_SUPPORT)) {
                hcmd_data.tp = cpu_to_le32(timepoint);
                hcmd_data.tp_data = cpu_to_le32(timepoint_data);
                iwl_trans_send_cmd(fwrt->trans, &hcmd);
        }
}

/* this function assumes dump_start was called beforehand and dump_end will be
 * called afterwards
 */
static void iwl_fw_dbg_collect_sync(struct iwl_fw_runtime *fwrt, u8 wk_idx)
{
        struct iwl_fw_dbg_params params = {0};
        struct iwl_fwrt_dump_data *dump_data =
                &fwrt->dump.wks[wk_idx].dump_data;

        if (!test_bit(wk_idx, &fwrt->dump.active_wks))
                return;

        /* also checks 'desc' for pre-ini mode, since that shadows in union */
        if (!dump_data->trig) {
                IWL_ERR(fwrt, "dump trigger data is not set\n");
                goto out;
        }

        if (!iwl_trans_device_enabled(fwrt->trans)) {
                IWL_ERR(fwrt, "Device is not enabled - cannot dump error\n");
                goto out;
        }

        /* there's no point in fw dump if the bus is dead */
        if (iwl_trans_is_dead(fwrt->trans)) {
                IWL_ERR(fwrt, "Skip fw error dump since bus is dead\n");
                goto out;
        }

        iwl_fw_dbg_stop_restart_recording(fwrt, &params, true);

        IWL_DEBUG_FW_INFO(fwrt, "WRT: Data collection start\n");
        if (iwl_trans_dbg_ini_valid(fwrt->trans))
                iwl_fw_error_ini_dump(fwrt, dump_data);
        else
                iwl_fw_error_dump(fwrt, dump_data);
        IWL_DEBUG_FW_INFO(fwrt, "WRT: Data collection done\n");

        iwl_fw_dbg_stop_restart_recording(fwrt, &params, false);

        if (iwl_trans_dbg_ini_valid(fwrt->trans)) {
                u32 policy = le32_to_cpu(dump_data->trig->apply_policy);
                u32 time_point = le32_to_cpu(dump_data->trig->time_point);

                if (policy & IWL_FW_INI_APPLY_POLICY_DUMP_COMPLETE_CMD) {
                        IWL_DEBUG_FW_INFO(fwrt, "WRT: sending dump complete\n");
                        iwl_send_dbg_dump_complete_cmd(fwrt, time_point, 0);
                }
        }

        if (fwrt->trans->dbg.last_tp_resetfw == IWL_FW_INI_RESET_FW_MODE_STOP_FW_ONLY)
                iwl_force_nmi(fwrt->trans);
out:
        if (iwl_trans_dbg_ini_valid(fwrt->trans)) {
                iwl_fw_error_dump_data_free(dump_data);
        } else {
                iwl_fw_free_dump_desc(fwrt, dump_data->desc);
                dump_data->desc = NULL;
        }

        clear_bit(wk_idx, &fwrt->dump.active_wks);
}

int iwl_fw_dbg_ini_collect(struct iwl_fw_runtime *fwrt,
                           struct iwl_fwrt_dump_data *dump_data,
                           bool sync)
{
        struct iwl_fw_ini_trigger_tlv *trig = dump_data->trig;
        enum iwl_fw_ini_time_point tp_id = le32_to_cpu(trig->time_point);
        u32 occur, delay;
        unsigned long idx;

        if (!iwl_fw_ini_trigger_on(fwrt, trig)) {
                IWL_WARN(fwrt, "WRT: Trigger %d is not active, aborting dump\n",
                         tp_id);
                return -EINVAL;
        }

        delay = le32_to_cpu(trig->dump_delay);
        occur = le32_to_cpu(trig->occurrences);
        if (!occur)
                return 0;

        trig->occurrences = cpu_to_le32(--occur);

        /* Check there is an available worker.
         * ffz return value is undefined if no zero exists,
         * so check against ~0UL first.
         */
        if (fwrt->dump.active_wks == ~0UL)
                return -EBUSY;

        idx = ffz(fwrt->dump.active_wks);

        if (idx >= IWL_FW_RUNTIME_DUMP_WK_NUM ||
            test_and_set_bit(fwrt->dump.wks[idx].idx, &fwrt->dump.active_wks))
                return -EBUSY;

        fwrt->dump.wks[idx].dump_data = *dump_data;

        if (sync)
                delay = 0;

        IWL_WARN(fwrt,
                 "WRT: Collecting data: ini trigger %d fired (delay=%dms).\n",
                 tp_id, (u32)(delay / USEC_PER_MSEC));

        if (sync)
                iwl_fw_dbg_collect_sync(fwrt, idx);
        else
                queue_delayed_work(system_dfl_wq,
                                   &fwrt->dump.wks[idx].wk,
                                   usecs_to_jiffies(delay));

        return 0;
}

void iwl_fw_error_dump_wk(struct work_struct *work)
{
        struct iwl_fwrt_wk_data *wks =
                container_of(work, typeof(*wks), wk.work);
        struct iwl_fw_runtime *fwrt =
                container_of(wks, typeof(*fwrt), dump.wks[wks->idx]);

        /* assumes the op mode mutex is locked in dump_start since
         * iwl_fw_dbg_collect_sync can't run in parallel
         */
        if (fwrt->ops && fwrt->ops->dump_start)
                fwrt->ops->dump_start(fwrt->ops_ctx);

        iwl_fw_dbg_collect_sync(fwrt, wks->idx);

        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_mac_cfg *mac_cfg = fwrt->trans->mac_cfg;

        if (!iwl_fw_dbg_is_d3_debug_enabled(fwrt))
                return;

        if (!fwrt->dump.d3_debug_data) {
                fwrt->dump.d3_debug_data = kmalloc(mac_cfg->base->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, mac_cfg->base->d3_debug_data_base_addr,
                                 fwrt->dump.d3_debug_data,
                                 mac_cfg->base->d3_debug_data_length);

        if (fwrt->sanitize_ops && fwrt->sanitize_ops->frob_mem)
                fwrt->sanitize_ops->frob_mem(fwrt->sanitize_ctx,
                                             mac_cfg->base->d3_debug_data_base_addr,
                                             fwrt->dump.d3_debug_data,
                                             mac_cfg->base->d3_debug_data_length);
}
IWL_EXPORT_SYMBOL(iwl_fw_dbg_read_d3_debug_data);

void iwl_fw_dbg_stop_sync(struct iwl_fw_runtime *fwrt)
{
        int i;

        iwl_dbg_tlv_del_timers(fwrt->trans);
        for (i = 0; i < IWL_FW_RUNTIME_DUMP_WK_NUM; i++)
                iwl_fw_dbg_collect_sync(fwrt, i);

        iwl_fw_dbg_stop_restart_recording(fwrt, NULL, true);
}
IWL_EXPORT_SYMBOL(iwl_fw_dbg_stop_sync);

static int iwl_fw_dbg_suspend_resume_hcmd(struct iwl_trans *trans, bool suspend)
{
        struct iwl_dbg_suspend_resume_cmd cmd = {
                .operation = suspend ?
                        cpu_to_le32(DBGC_SUSPEND_CMD) :
                        cpu_to_le32(DBGC_RESUME_CMD),
        };
        struct iwl_host_cmd hcmd = {
                .id = WIDE_ID(DEBUG_GROUP, DBGC_SUSPEND_RESUME),
                .data[0] = &cmd,
                .len[0] = sizeof(cmd),
        };

        return iwl_trans_send_cmd(trans, &hcmd);
}

static void iwl_fw_dbg_stop_recording(struct iwl_trans *trans,
                                      struct iwl_fw_dbg_params *params)
{
        if (trans->mac_cfg->device_family == IWL_DEVICE_FAMILY_7000) {
                iwl_set_bits_prph(trans, MON_BUFF_SAMPLE_CTL, 0x100);
                return;
        }

        if (params) {
                params->in_sample = iwl_read_umac_prph(trans, DBGC_IN_SAMPLE);
                params->out_ctrl = iwl_read_umac_prph(trans, DBGC_OUT_CTRL);
        }

        iwl_write_umac_prph(trans, DBGC_IN_SAMPLE, 0);
        /* wait for the DBGC to finish writing the internal buffer to DRAM to
         * avoid halting the HW while writing
         */
        usleep_range(700, 1000);
        iwl_write_umac_prph(trans, DBGC_OUT_CTRL, 0);
}

static int iwl_fw_dbg_restart_recording(struct iwl_trans *trans,
                                        struct iwl_fw_dbg_params *params)
{
        if (!params)
                return -EIO;

        if (trans->mac_cfg->device_family == IWL_DEVICE_FAMILY_7000) {
                iwl_clear_bits_prph(trans, MON_BUFF_SAMPLE_CTL, 0x100);
                iwl_clear_bits_prph(trans, MON_BUFF_SAMPLE_CTL, 0x1);
                iwl_set_bits_prph(trans, MON_BUFF_SAMPLE_CTL, 0x1);
        } else {
                iwl_write_umac_prph(trans, DBGC_IN_SAMPLE, params->in_sample);
                iwl_write_umac_prph(trans, DBGC_OUT_CTRL, params->out_ctrl);
        }

        return 0;
}

int iwl_fw_send_timestamp_marker_cmd(struct iwl_fw_runtime *fwrt)
{
        struct iwl_marker marker = {
                .dw_len = sizeof(struct iwl_marker) / 4,
                .marker_id = MARKER_ID_SYNC_CLOCK,
        };
        struct iwl_host_cmd hcmd = {
                .flags = CMD_ASYNC,
                .id = WIDE_ID(LONG_GROUP, MARKER_CMD),
                .dataflags = {},
        };
        struct iwl_marker_rsp *resp;
        int cmd_ver = iwl_fw_lookup_cmd_ver(fwrt->fw,
                                            WIDE_ID(LONG_GROUP, MARKER_CMD),
                                            IWL_FW_CMD_VER_UNKNOWN);
        int ret;

        if (cmd_ver == 1) {
                /* the real timestamp is taken from the ftrace clock
                 * this is for finding the match between fw and kernel logs
                 */
                marker.timestamp = cpu_to_le64(fwrt->timestamp.seq++);
        } else if (cmd_ver == 2) {
                marker.timestamp = cpu_to_le64(ktime_get_boottime_ns());
        } else {
                IWL_DEBUG_INFO(fwrt,
                               "Invalid version of Marker CMD. Ver = %d\n",
                               cmd_ver);
                return -EINVAL;
        }

        hcmd.data[0] = &marker;
        hcmd.len[0] = sizeof(marker);

        ret = iwl_trans_send_cmd(fwrt->trans, &hcmd);

        if (cmd_ver > 1 && hcmd.resp_pkt) {
                resp = (void *)hcmd.resp_pkt->data;
                IWL_DEBUG_INFO(fwrt, "FW GP2 time: %u\n",
                               le32_to_cpu(resp->gp2));
        }

        return ret;
}

void iwl_fw_dbg_stop_restart_recording(struct iwl_fw_runtime *fwrt,
                                       struct iwl_fw_dbg_params *params,
                                       bool stop)
{
        int ret __maybe_unused = 0;

        if (!iwl_trans_fw_running(fwrt->trans))
                return;

        if (fw_has_capa(&fwrt->fw->ucode_capa,
                        IWL_UCODE_TLV_CAPA_DBG_SUSPEND_RESUME_CMD_SUPP)) {
                if (stop)
                        iwl_fw_send_timestamp_marker_cmd(fwrt);
                ret = iwl_fw_dbg_suspend_resume_hcmd(fwrt->trans, stop);
        } else if (stop) {
                iwl_fw_dbg_stop_recording(fwrt->trans, params);
        } else {
                ret = iwl_fw_dbg_restart_recording(fwrt->trans, params);
        }
#ifdef CONFIG_IWLWIFI_DEBUGFS
        if (!ret) {
                if (stop)
                        fwrt->trans->dbg.rec_on = false;
                else
                        iwl_fw_set_dbg_rec_on(fwrt);
        }
#endif
}
IWL_EXPORT_SYMBOL(iwl_fw_dbg_stop_restart_recording);

void iwl_fw_disable_dbg_asserts(struct iwl_fw_runtime *fwrt)
{
        struct iwl_fw_dbg_config_cmd cmd = {
                .type = cpu_to_le32(DEBUG_TOKEN_CONFIG_TYPE),
                .conf = cpu_to_le32(IWL_FW_DBG_CONFIG_TOKEN),
        };
        struct iwl_host_cmd hcmd = {
                .id = WIDE_ID(LONG_GROUP, LDBG_CONFIG_CMD),
                .data[0] = &cmd,
                .len[0] = sizeof(cmd),
        };
        u32 preset = u32_get_bits(fwrt->trans->dbg.domains_bitmap,
                                  GENMASK(31, IWL_FW_DBG_DOMAIN_POS + 1));

        /* supported starting from 9000 devices */
        if (fwrt->trans->mac_cfg->device_family < IWL_DEVICE_FAMILY_9000)
                return;

        if (fwrt->trans->dbg.yoyo_bin_loaded || (preset && preset != 1))
                return;

        iwl_trans_send_cmd(fwrt->trans, &hcmd);
}
IWL_EXPORT_SYMBOL(iwl_fw_disable_dbg_asserts);

void iwl_fw_dbg_clear_monitor_buf(struct iwl_fw_runtime *fwrt)
{
        struct iwl_fw_dbg_params params = {0};

        iwl_fw_dbg_stop_sync(fwrt);

        if (fw_has_api(&fwrt->fw->ucode_capa,
                       IWL_UCODE_TLV_API_INT_DBG_BUF_CLEAR)) {
                struct iwl_host_cmd hcmd = {
                        .id = WIDE_ID(DEBUG_GROUP, FW_CLEAR_BUFFER),
                };
                iwl_trans_send_cmd(fwrt->trans, &hcmd);
        }

        iwl_dbg_tlv_init_cfg(fwrt);
        iwl_fw_dbg_stop_restart_recording(fwrt, &params, false);
}
IWL_EXPORT_SYMBOL(iwl_fw_dbg_clear_monitor_buf);