iwlwifi: dbg_ini: remove apply point, switch to time point API

Remove the "apply points" mechanism as preparation for the changed
debug API where this is now a "time point" instead. Use a new API
across the code at the trigger points ("time points"), but don't
yet implement it since that requires some more preparation.

Signed-off-by: Shahar S Matityahu <shahar.s.matityahu@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

1 files changed, 6 insertions, 483 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c
index b4fba73b5b23..db76b28eac40 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c
@@ -104,26 +104,6 @@ dbg_ver_table[IWL_DBG_TLV_TYPE_NUM] = {
 	[IWL_DBG_TLV_TYPE_TRIGGER]	= {.min_ver = 1, .max_ver = 1,},
 };
 
-static int iwl_dbg_tlv_copy(struct iwl_ucode_tlv *tlv, struct list_head *list)
-{
-	struct iwl_apply_point_data *tlv_copy;
-	u32 len = le32_to_cpu(tlv->length);
-
-	tlv_copy = kzalloc(sizeof(*tlv_copy) + len, GFP_KERNEL);
-	if (!tlv_copy)
-		return -ENOMEM;
-
-	INIT_LIST_HEAD(&tlv_copy->list);
-	memcpy(&tlv_copy->tlv, tlv, sizeof(*tlv) + len);
-
-	if (!list->next)
-		INIT_LIST_HEAD(list);
-
-	list_add_tail(&tlv_copy->list, list);
-
-	return 0;
-}
-
 static bool iwl_dbg_tlv_ver_support(struct iwl_ucode_tlv *tlv)
 {
 	struct iwl_fw_ini_header *hdr = (void *)&tlv->data[0];
@@ -147,9 +127,6 @@ void iwl_dbg_tlv_alloc(struct iwl_trans *trans, struct iwl_ucode_tlv *tlv,
 	u32 tlv_idx = type - IWL_UCODE_TLV_DEBUG_BASE;
 	enum iwl_ini_cfg_state *cfg_state = ext ?
 		&trans->dbg.external_ini_cfg : &trans->dbg.internal_ini_cfg;
-	struct list_head *dbg_cfg_list = ext ?
-		&trans->dbg.apply_points_ext[pnt].list :
-		&trans->dbg.apply_points[pnt].list;
 
 	IWL_DEBUG_FW(trans, "WRT: read TLV 0x%x, apply point %d\n",
 		     type, pnt);
@@ -159,24 +136,12 @@ void iwl_dbg_tlv_alloc(struct iwl_trans *trans, struct iwl_ucode_tlv *tlv,
 		goto out_err;
 	}
 
-	if (pnt >= IWL_FW_INI_APPLY_NUM) {
-		IWL_ERR(trans, "WRT: Invalid apply point %d\n", pnt);
-		goto out_err;
-	}
-
 	if (!iwl_dbg_tlv_ver_support(tlv)) {
 		IWL_ERR(trans, "WRT: Unsupported TLV 0x%x version %u\n", type,
 			le32_to_cpu(hdr->tlv_version));
 		goto out_err;
 	}
 
-	if (iwl_dbg_tlv_copy(tlv, dbg_cfg_list)) {
-		IWL_ERR(trans,
-			"WRT: Failed to allocate TLV 0x%x, apply point %d\n",
-			type, pnt);
-		goto out_err;
-	}
-
 	if (*cfg_state == IWL_INI_CFG_STATE_NOT_LOADED)
 		*cfg_state = IWL_INI_CFG_STATE_LOADED;
 
@@ -186,33 +151,9 @@ out_err:
 	*cfg_state = IWL_INI_CFG_STATE_CORRUPTED;
 }
 
-static void iwl_dbg_tlv_free_list(struct list_head *list)
-{
-	if (!list || !list->next)
-		return;
-
-	while (!list_empty(list)) {
-		struct iwl_apply_point_data *node =
-			list_entry(list->next, typeof(*node), list);
-
-		list_del(&node->list);
-		kfree(node);
-	}
-}
-
 void iwl_dbg_tlv_free(struct iwl_trans *trans)
 {
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(trans->dbg.apply_points); i++) {
-		struct iwl_apply_point_data *data;
-
-		data = &trans->dbg.apply_points[i];
-		iwl_dbg_tlv_free_list(&data->list);
-
-		data = &trans->dbg.apply_points_ext[i];
-		iwl_dbg_tlv_free_list(&data->list);
-	}
+	/* will be used again later */
 }
 
 static int iwl_dbg_tlv_parse_bin(struct iwl_trans *trans, const u8 *data,
@@ -258,428 +199,10 @@ void iwl_dbg_tlv_load_bin(struct device *dev, struct iwl_trans *trans)
 	release_firmware(fw);
 }
 
-static void
-iwl_dbg_tlv_apply_debug_info(struct iwl_fw_runtime *fwrt,
-			     struct iwl_fw_ini_debug_info_tlv *dbg_info,
-			     bool ext, enum iwl_fw_ini_apply_point pnt)
-{
-	u32 img_name_len = le32_to_cpu(dbg_info->img_name_len);
-	u32 dbg_cfg_name_len = le32_to_cpu(dbg_info->dbg_cfg_name_len);
-	const char err_str[] =
-		"WRT: Invalid %s name length %d, expected %d\n";
-
-	if (img_name_len != IWL_FW_INI_MAX_IMG_NAME_LEN) {
-		IWL_WARN(fwrt, err_str, "image", img_name_len,
-			 IWL_FW_INI_MAX_IMG_NAME_LEN);
-		return;
-	}
-
-	if (dbg_cfg_name_len != IWL_FW_INI_MAX_DBG_CFG_NAME_LEN) {
-		IWL_WARN(fwrt, err_str, "debug cfg", dbg_cfg_name_len,
-			 IWL_FW_INI_MAX_DBG_CFG_NAME_LEN);
-		return;
-	}
-
-	if (ext) {
-		memcpy(fwrt->dump.external_dbg_cfg_name, dbg_info->dbg_cfg_name,
-		       sizeof(fwrt->dump.external_dbg_cfg_name));
-	} else {
-		memcpy(fwrt->dump.img_name, dbg_info->img_name,
-		       sizeof(fwrt->dump.img_name));
-		memcpy(fwrt->dump.internal_dbg_cfg_name, dbg_info->dbg_cfg_name,
-		       sizeof(fwrt->dump.internal_dbg_cfg_name));
-	}
-}
-
-static void iwl_dbg_tlv_alloc_buffer(struct iwl_fw_runtime *fwrt, u32 size)
-{
-	struct iwl_trans *trans = fwrt->trans;
-	void *virtual_addr = NULL;
-	dma_addr_t phys_addr;
-
-	if (WARN_ON_ONCE(trans->dbg.num_blocks ==
-			 ARRAY_SIZE(trans->dbg.fw_mon)))
-		return;
-
-	virtual_addr =
-		dma_alloc_coherent(fwrt->trans->dev, size, &phys_addr,
-				   GFP_KERNEL | __GFP_NOWARN);
-
-	/* TODO: alloc fragments if needed */
-	if (!virtual_addr)
-		IWL_ERR(fwrt, "Failed to allocate debug memory\n");
-
-	IWL_DEBUG_FW(trans,
-		     "Allocated DRAM buffer[%d], size=0x%x\n",
-		     trans->dbg.num_blocks, size);
-
-	trans->dbg.fw_mon[trans->dbg.num_blocks].block = virtual_addr;
-	trans->dbg.fw_mon[trans->dbg.num_blocks].physical = phys_addr;
-	trans->dbg.fw_mon[trans->dbg.num_blocks].size = size;
-	trans->dbg.num_blocks++;
-}
-
-static void iwl_dbg_tlv_apply_buffer(struct iwl_fw_runtime *fwrt,
-				     struct iwl_fw_ini_allocation_tlv *alloc,
-				     enum iwl_fw_ini_apply_point pnt)
-{
-	struct iwl_trans *trans = fwrt->trans;
-	struct iwl_ldbg_config_cmd ldbg_cmd = {
-		.type = cpu_to_le32(BUFFER_ALLOCATION),
-	};
-	struct iwl_buffer_allocation_cmd *cmd = &ldbg_cmd.buffer_allocation;
-	struct iwl_host_cmd hcmd = {
-		.id = LDBG_CONFIG_CMD,
-		.flags = CMD_ASYNC,
-		.data[0] = &ldbg_cmd,
-		.len[0] = sizeof(ldbg_cmd),
-	};
-	int block_idx = trans->dbg.num_blocks;
-	u32 buf_location = le32_to_cpu(alloc->buffer_location);
-	u32 alloc_id = le32_to_cpu(alloc->allocation_id);
-
-	if (alloc_id <= IWL_FW_INI_ALLOCATION_INVALID ||
-	    alloc_id >= IWL_FW_INI_ALLOCATION_NUM) {
-		IWL_ERR(fwrt, "WRT: Invalid allocation id %d\n", alloc_id);
-		return;
-	}
-
-	if (fwrt->trans->dbg.ini_dest == IWL_FW_INI_LOCATION_INVALID)
-		fwrt->trans->dbg.ini_dest = buf_location;
-
-	if (buf_location != fwrt->trans->dbg.ini_dest) {
-		WARN(fwrt,
-		     "WRT: attempt to override buffer location on apply point %d\n",
-		     pnt);
-
-		return;
-	}
-
-	if (buf_location == IWL_FW_INI_LOCATION_SRAM_PATH) {
-		IWL_DEBUG_FW(trans, "WRT: Applying SMEM buffer destination\n");
-		/* set sram monitor by enabling bit 7 */
-		iwl_set_bit(fwrt->trans, CSR_HW_IF_CONFIG_REG,
-			    CSR_HW_IF_CONFIG_REG_BIT_MONITOR_SRAM);
-
-		return;
-	}
-
-	if (buf_location != IWL_FW_INI_LOCATION_DRAM_PATH)
-		return;
-
-	if (!(BIT(alloc_id) & fwrt->trans->dbg.is_alloc)) {
-		iwl_dbg_tlv_alloc_buffer(fwrt, le32_to_cpu(alloc->size));
-		if (block_idx == trans->dbg.num_blocks)
-			return;
-		fwrt->trans->dbg.is_alloc |= BIT(alloc_id);
-	}
-
-	/* First block is assigned via registers / context info */
-	if (trans->dbg.num_blocks == 1)
-		return;
-
-	IWL_DEBUG_FW(trans,
-		     "WRT: Applying DRAM buffer[%d] destination\n", block_idx);
-
-	cmd->num_frags = cpu_to_le32(1);
-	cmd->fragments[0].address =
-		cpu_to_le64(trans->dbg.fw_mon[block_idx].physical);
-	cmd->fragments[0].size = alloc->size;
-	cmd->allocation_id = alloc->allocation_id;
-	cmd->buffer_location = alloc->buffer_location;
-
-	iwl_trans_send_cmd(trans, &hcmd);
-}
-
-static void iwl_dbg_tlv_apply_hcmd(struct iwl_fw_runtime *fwrt,
-				   struct iwl_ucode_tlv *tlv)
-{
-	struct iwl_fw_ini_hcmd_tlv *hcmd_tlv = (void *)&tlv->data[0];
-	struct iwl_fw_ini_hcmd *data = &hcmd_tlv->hcmd;
-	u16 len = le32_to_cpu(tlv->length) - sizeof(*hcmd_tlv);
-
-	struct iwl_host_cmd hcmd = {
-		.id = WIDE_ID(data->group, data->id),
-		.len = { len, },
-		.data = { data->data, },
-	};
-
-	/* currently the driver supports always on domain only */
-	if (le32_to_cpu(hcmd_tlv->domain) != IWL_FW_INI_DBG_DOMAIN_ALWAYS_ON)
-		return;
-
-	IWL_DEBUG_FW(fwrt, "WRT: Sending host command id=0x%x, group=0x%x\n",
-		     data->id, data->group);
-
-	iwl_trans_send_cmd(fwrt->trans, &hcmd);
-}
-
-static void iwl_dbg_tlv_apply_region(struct iwl_fw_runtime *fwrt,
-				     struct iwl_fw_ini_region_tlv *tlv,
-				     enum iwl_fw_ini_apply_point pnt)
+void iwl_dbg_tlv_time_point(struct iwl_fw_runtime *fwrt,
+			    enum iwl_fw_ini_time_point tp_id,
+			    union iwl_dbg_tlv_tp_data *tp_data)
 {
-	void *iter = (void *)tlv->region_config;
-	int i, size = le32_to_cpu(tlv->num_regions);
-	const char *err_st =
-		"WRT: Invalid region %s %d for apply point %d\n";
-
-	for (i = 0; i < size; i++) {
-		struct iwl_fw_ini_region_cfg *reg = iter, **active;
-		int id = le32_to_cpu(reg->region_id);
-		u32 type = le32_to_cpu(reg->region_type);
-
-		if (WARN(id >= ARRAY_SIZE(fwrt->dump.active_regs), err_st, "id",
-			 id, pnt))
-			break;
-
-		if (WARN(type == 0 || type >= IWL_FW_INI_REGION_NUM, err_st,
-			 "type", type, pnt))
-			break;
-
-		active = &fwrt->dump.active_regs[id];
-
-		if (*active)
-			IWL_WARN(fwrt->trans, "WRT: Region id %d override\n",
-				 id);
-
-		IWL_DEBUG_FW(fwrt, "WRT: Activating region id %d\n", id);
-
-		*active = reg;
-
-		if (type == IWL_FW_INI_REGION_TXF ||
-		    type == IWL_FW_INI_REGION_RXF)
-			iter += le32_to_cpu(reg->fifos.num_of_registers) *
-				sizeof(__le32);
-		else if (type == IWL_FW_INI_REGION_DEVICE_MEMORY ||
-			 type == IWL_FW_INI_REGION_PERIPHERY_MAC ||
-			 type == IWL_FW_INI_REGION_PERIPHERY_PHY ||
-			 type == IWL_FW_INI_REGION_PERIPHERY_AUX ||
-			 type == IWL_FW_INI_REGION_INTERNAL_BUFFER ||
-			 type == IWL_FW_INI_REGION_PAGING ||
-			 type == IWL_FW_INI_REGION_CSR ||
-			 type == IWL_FW_INI_REGION_LMAC_ERROR_TABLE ||
-			 type == IWL_FW_INI_REGION_UMAC_ERROR_TABLE)
-			iter += le32_to_cpu(reg->internal.num_of_ranges) *
-				sizeof(__le32);
-
-		iter += sizeof(*reg);
-	}
-}
-
-static int iwl_dbg_tlv_trig_realloc(struct iwl_fw_runtime *fwrt,
-				    struct iwl_fw_ini_active_triggers *active,
-				    u32 id, int size)
-{
-	void *ptr;
-
-	if (size <= active->size)
-		return 0;
-
-	ptr = krealloc(active->trig, size, GFP_KERNEL);
-	if (!ptr) {
-		IWL_ERR(fwrt, "WRT: Failed to allocate memory for trigger %d\n",
-			id);
-		return -ENOMEM;
-	}
-	active->trig = ptr;
-	active->size = size;
-
-	return 0;
-}
-
-static void iwl_dbg_tlv_apply_trigger(struct iwl_fw_runtime *fwrt,
-				      struct iwl_fw_ini_trigger_tlv *tlv,
-				      enum iwl_fw_ini_apply_point apply_point)
-{
-	int i, size = le32_to_cpu(tlv->num_triggers);
-	void *iter = (void *)tlv->trigger_config;
-
-	for (i = 0; i < size; i++) {
-		struct iwl_fw_ini_trigger *trig = iter;
-		struct iwl_fw_ini_active_triggers *active;
-		int id = le32_to_cpu(trig->trigger_id);
-		u32 trig_regs_size = le32_to_cpu(trig->num_regions) *
-			sizeof(__le32);
-
-		if (WARN(id >= ARRAY_SIZE(fwrt->dump.active_trigs),
-			 "WRT: Invalid trigger id %d for apply point %d\n", id,
-			 apply_point))
-			break;
-
-		active = &fwrt->dump.active_trigs[id];
-
-		if (!active->active) {
-			size_t trig_size = sizeof(*trig) + trig_regs_size;
-
-			IWL_DEBUG_FW(fwrt, "WRT: Activating trigger %d\n", id);
-
-			if (iwl_dbg_tlv_trig_realloc(fwrt, active, id,
-						     trig_size))
-				goto next;
-
-			memcpy(active->trig, trig, trig_size);
-
-		} else {
-			u32 conf_override =
-				!(le32_to_cpu(trig->override_trig) & 0xff);
-			u32 region_override =
-				!(le32_to_cpu(trig->override_trig) & 0xff00);
-			u32 offset = 0;
-			u32 active_regs =
-				le32_to_cpu(active->trig->num_regions);
-			u32 new_regs = le32_to_cpu(trig->num_regions);
-			int mem_to_add = trig_regs_size;
-
-			if (region_override) {
-				IWL_DEBUG_FW(fwrt,
-					     "WRT: Trigger %d regions override\n",
-					     id);
-
-				mem_to_add -= active_regs * sizeof(__le32);
-			} else {
-				IWL_DEBUG_FW(fwrt,
-					     "WRT: Trigger %d regions appending\n",
-					     id);
-
-				offset += active_regs;
-				new_regs += active_regs;
-			}
-
-			if (iwl_dbg_tlv_trig_realloc(fwrt, active, id,
-						     active->size + mem_to_add))
-				goto next;
-
-			if (conf_override) {
-				IWL_DEBUG_FW(fwrt,
-					     "WRT: Trigger %d configuration override\n",
-					     id);
-
-				memcpy(active->trig, trig, sizeof(*trig));
-			}
-
-			memcpy(active->trig->data + offset, trig->data,
-			       trig_regs_size);
-			active->trig->num_regions = cpu_to_le32(new_regs);
-		}
-
-		/* Since zero means infinity - just set to -1 */
-		if (!le32_to_cpu(active->trig->occurrences))
-			active->trig->occurrences = cpu_to_le32(-1);
-
-		active->active = true;
-
-		if (id == IWL_FW_TRIGGER_ID_PERIODIC_TRIGGER) {
-			u32 collect_interval = le32_to_cpu(trig->trigger_data);
-
-			/* the minimum allowed interval is 50ms */
-			if (collect_interval < 50) {
-				collect_interval = 50;
-				trig->trigger_data =
-					cpu_to_le32(collect_interval);
-			}
-
-			mod_timer(&fwrt->dump.periodic_trig,
-				  jiffies + msecs_to_jiffies(collect_interval));
-		}
-next:
-		iter += sizeof(*trig) + trig_regs_size;
-	}
-}
-
-static void _iwl_dbg_tlv_apply_point(struct iwl_fw_runtime *fwrt,
-				     struct iwl_apply_point_data *data,
-				     enum iwl_fw_ini_apply_point pnt,
-				     bool ext)
-{
-	struct iwl_apply_point_data *iter;
-
-	if (!data->list.next)
-		return;
-
-	list_for_each_entry(iter, &data->list, list) {
-		struct iwl_ucode_tlv *tlv = &iter->tlv;
-		void *ini_tlv = (void *)tlv->data;
-		u32 type = le32_to_cpu(tlv->type);
-		const char invalid_ap_str[] =
-			"WRT: Invalid apply point %d for %s\n";
-
-		switch (type) {
-		case IWL_UCODE_TLV_TYPE_DEBUG_INFO:
-			iwl_dbg_tlv_apply_debug_info(fwrt, ini_tlv, ext, pnt);
-			break;
-		case IWL_UCODE_TLV_TYPE_BUFFER_ALLOCATION:
-			if (pnt != IWL_FW_INI_APPLY_EARLY) {
-				IWL_ERR(fwrt, invalid_ap_str, pnt,
-					"buffer allocation");
-				break;
-			}
-			iwl_dbg_tlv_apply_buffer(fwrt, ini_tlv, pnt);
-			break;
-		case IWL_UCODE_TLV_TYPE_HCMD:
-			if (pnt < IWL_FW_INI_APPLY_AFTER_ALIVE) {
-				IWL_ERR(fwrt, invalid_ap_str, pnt,
-					"host command");
-				break;
-			}
-			iwl_dbg_tlv_apply_hcmd(fwrt, tlv);
-			break;
-		case IWL_UCODE_TLV_TYPE_REGIONS:
-			iwl_dbg_tlv_apply_region(fwrt, ini_tlv, pnt);
-			break;
-		case IWL_UCODE_TLV_TYPE_TRIGGERS:
-			iwl_dbg_tlv_apply_trigger(fwrt, ini_tlv, pnt);
-			break;
-		default:
-			WARN_ONCE(1, "WRT: Invalid TLV 0x%x for apply point\n",
-				  type);
-			break;
-		}
-	}
-}
-
-static void iwl_dbg_tlv_reset_cfg(struct iwl_fw_runtime *fwrt)
-{
-	int i;
-
-	for (i = 0; i < IWL_FW_INI_MAX_REGION_ID; i++)
-		fwrt->dump.active_regs[i] = NULL;
-
-	/* disable the triggers, used in recovery flow */
-	for (i = 0; i < IWL_FW_TRIGGER_ID_NUM; i++)
-		fwrt->dump.active_trigs[i].active = false;
-
-	memset(fwrt->dump.img_name, 0,
-	       sizeof(fwrt->dump.img_name));
-	memset(fwrt->dump.internal_dbg_cfg_name, 0,
-	       sizeof(fwrt->dump.internal_dbg_cfg_name));
-	memset(fwrt->dump.external_dbg_cfg_name, 0,
-	       sizeof(fwrt->dump.external_dbg_cfg_name));
-
-	fwrt->trans->dbg.ini_dest = IWL_FW_INI_LOCATION_INVALID;
-}
-
-void iwl_dbg_tlv_apply_point(struct iwl_fw_runtime *fwrt,
-			     enum iwl_fw_ini_apply_point apply_point)
-{
-	void *data;
-
-	if (apply_point == IWL_FW_INI_APPLY_EARLY)
-		iwl_dbg_tlv_reset_cfg(fwrt);
-
-	if (fwrt->trans->dbg.internal_ini_cfg != IWL_INI_CFG_STATE_NOT_LOADED) {
-		IWL_DEBUG_FW(fwrt,
-			     "WRT: Enabling internal configuration apply point %d\n",
-			     apply_point);
-		data = &fwrt->trans->dbg.apply_points[apply_point];
-		_iwl_dbg_tlv_apply_point(fwrt, data, apply_point, false);
-	}
-
-	if (fwrt->trans->dbg.external_ini_cfg != IWL_INI_CFG_STATE_NOT_LOADED) {
-		IWL_DEBUG_FW(fwrt,
-			     "WRT: Enabling external configuration apply point %d\n",
-			     apply_point);
-		data = &fwrt->trans->dbg.apply_points_ext[apply_point];
-		_iwl_dbg_tlv_apply_point(fwrt, data, apply_point, true);
-	}
+	/* will be used later */
 }
-IWL_EXPORT_SYMBOL(iwl_dbg_tlv_apply_point);
+IWL_EXPORT_SYMBOL(iwl_dbg_tlv_time_point);