From cf29c5b66b9f83939367d90679eb68cdfa2f0356 Mon Sep 17 00:00:00 2001
From: Shahar S Matityahu <shahar.s.matityahu@intel.com>
Date: Tue, 23 Jul 2019 14:26:49 +0300
Subject: [PATCH] iwlwifi: dbg_ini: implement time point handling
Git-commit: cf29c5b66b9f83939367d90679eb68cdfa2f0356
Patch-mainline: v5.5-rc1
References: jsc#SLE-13430
Calculate active triggers list and implement time points handling.
Also allow to override the debug domain via iwl-dbg-cfg.ini by setting
FW_DBG_DOMAIN field.
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Shahar S Matityahu <shahar.s.matityahu@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/net/wireless/intel/iwlwifi/Makefile | 3 +-
.../net/wireless/intel/iwlwifi/fw/api/dbg-tlv.h | 31 ++-
drivers/net/wireless/intel/iwlwifi/fw/dbg.c | 3 +
drivers/net/wireless/intel/iwlwifi/fw/runtime.h | 13 +
drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c | 280 ++++++++++++++++++++-
drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.h | 3 +
drivers/net/wireless/intel/iwlwifi/iwl-trans.h | 4 +
7 files changed, 323 insertions(+), 14 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/Makefile b/drivers/net/wireless/intel/iwlwifi/Makefile
index ff41987a7e35..0aae3fa4128c 100644
--- a/drivers/net/wireless/intel/iwlwifi/Makefile
+++ b/drivers/net/wireless/intel/iwlwifi/Makefile
@@ -14,7 +14,8 @@ iwlwifi-$(CONFIG_IWLMVM) += cfg/7000.o cfg/8000.o cfg/9000.o cfg/22000.o
iwlwifi-objs += iwl-dbg-tlv.o
iwlwifi-objs += iwl-trans.o
iwlwifi-objs += fw/notif-wait.o
-iwlwifi-$(CONFIG_IWLMVM) += fw/paging.o fw/smem.o fw/init.o fw/dbg.o
+iwlwifi-objs += fw/dbg.o
+iwlwifi-$(CONFIG_IWLMVM) += fw/paging.o fw/smem.o fw/init.o
iwlwifi-$(CONFIG_ACPI) += fw/acpi.o
iwlwifi-$(CONFIG_IWLWIFI_DEBUGFS) += fw/debugfs.o
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/dbg-tlv.h b/drivers/net/wireless/intel/iwlwifi/fw/api/dbg-tlv.h
index 21e1de9166cf..4d1b084da4b1 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/api/dbg-tlv.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/api/dbg-tlv.h
@@ -61,18 +61,7 @@
#include <linux/bitops.h>
#define IWL_FW_INI_MAX_CFG_NAME 64
-
-/**
- * enum iwl_fw_ini_dbg_domain - debug domains
- * allows to send host cmd or collect memory region if a given domain is enabled
- *
- * @IWL_FW_INI_DBG_DOMAIN_ALWAYS_ON: the default domain, always on
- * @IWL_FW_INI_DBG_DOMAIN_REPORT_PS: power save domain
- */
-enum iwl_fw_ini_dbg_domain {
- IWL_FW_INI_DBG_DOMAIN_ALWAYS_ON = 0,
- IWL_FW_INI_DBG_DOMAIN_REPORT_PS,
-}; /* FW_DEBUG_TLV_DOMAIN_API_E_VER_1 */
+#define IWL_FW_INI_DOMAIN_ALWAYS_ON 0
/**
* struct iwl_fw_ini_hcmd
@@ -652,4 +641,22 @@ enum iwl_fw_ini_time_point {
IWL_FW_INI_TIME_POINT_NUM,
}; /* FW_TLV_DEBUG_TIME_POINT_API_E */
+/**
+ * enum iwl_fw_ini_trigger_apply_policy - Determines how to apply triggers
+ *
+ * @IWL_FW_INI_APPLY_POLICY_MATCH_TIME_POINT: match by time point
+ * @IWL_FW_INI_APPLY_POLICY_MATCH_DATA: match by trigger data
+ * @IWL_FW_INI_APPLY_POLICY_OVERRIDE_REGIONS: override regions mask.
+ * Append otherwise
+ * @IWL_FW_INI_APPLY_POLICY_OVERRIDE_CFG: override trigger configuration
+ * @IWL_FW_INI_APPLY_POLICY_OVERRIDE_DATA: override trigger data.
+ * Append otherwise
+ */
+enum iwl_fw_ini_trigger_apply_policy {
+ IWL_FW_INI_APPLY_POLICY_MATCH_TIME_POINT = BIT(0),
+ IWL_FW_INI_APPLY_POLICY_MATCH_DATA = BIT(1),
+ IWL_FW_INI_APPLY_POLICY_OVERRIDE_REGIONS = BIT(8),
+ IWL_FW_INI_APPLY_POLICY_OVERRIDE_CFG = BIT(9),
+ IWL_FW_INI_APPLY_POLICY_OVERRIDE_DATA = BIT(10),
+};
#endif
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c
index aed7f9d9ebec..c4b79f4f4736 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c
+++ b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c
@@ -2301,6 +2301,9 @@ int iwl_fw_dbg_ini_collect(struct iwl_fw_runtime *fwrt,
u32 occur, delay;
unsigned long idx;
+ if (test_bit(STATUS_GEN_ACTIVE_TRIGS, &fwrt->status))
+ return -EBUSY;
+
if (!iwl_fw_ini_trigger_on(fwrt, trig)) {
IWL_WARN(fwrt, "WRT: Trigger %d is not active, aborting dump\n",
tp_id);
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/runtime.h b/drivers/net/wireless/intel/iwlwifi/fw/runtime.h
index 6c2ade4c7a0c..87adbd3dd764 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/runtime.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/runtime.h
@@ -67,6 +67,8 @@
#include "fw/api/paging.h"
#include "iwl-eeprom-parse.h"
+#define IWL_FW_DBG_DOMAIN IWL_FW_INI_DOMAIN_ALWAYS_ON
+
struct iwl_fw_runtime_ops {
int (*dump_start)(void *ctx);
void (*dump_end)(void *ctx);
@@ -125,6 +127,14 @@ struct iwl_txf_iter_data {
u8 internal_txf;
};
+/**
+ * enum iwl_fw_runtime_status - fw runtime status flags
+ * @STATUS_GEN_ACTIVE_TRIGS: generating active trigger list
+ */
+enum iwl_fw_runtime_status {
+ STATUS_GEN_ACTIVE_TRIGS,
+};
+
/**
* struct iwl_fw_runtime - runtime data for firmware
* @fw: firmware image
@@ -138,6 +148,7 @@ struct iwl_txf_iter_data {
* @smem_cfg: saved firmware SMEM configuration
* @cur_fw_img: current firmware image, must be maintained by
* the driver by calling &iwl_fw_set_current_image()
+ * @status: &enum iwl_fw_runtime_status
* @dump: debug dump data
*/
struct iwl_fw_runtime {
@@ -158,6 +169,8 @@ struct iwl_fw_runtime {
/* memory configuration */
struct iwl_fwrt_shared_mem_cfg smem_cfg;
+ unsigned long status;
+
/* debug */
struct {
const struct iwl_fw_dump_desc *desc;
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c
index 651e1fee2763..1cec10a60cba 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c
@@ -350,6 +350,12 @@ void iwl_dbg_tlv_free(struct iwl_trans *trans)
list_del(&tlv_node->list);
kfree(tlv_node);
}
+
+ list_for_each_entry_safe(tlv_node, tlv_node_tmp,
+ &tp->active_trig_list, list) {
+ list_del(&tlv_node->list);
+ kfree(tlv_node);
+ }
}
}
@@ -408,13 +414,285 @@ void iwl_dbg_tlv_init(struct iwl_trans *trans)
INIT_LIST_HEAD(&tp->trig_list);
INIT_LIST_HEAD(&tp->hcmd_list);
+ INIT_LIST_HEAD(&tp->active_trig_list);
+ }
+}
+
+static void iwl_dbg_tlv_send_hcmds(struct iwl_fw_runtime *fwrt,
+ struct list_head *hcmd_list)
+{
+ struct iwl_dbg_tlv_node *node;
+
+ list_for_each_entry(node, hcmd_list, list) {
+ struct iwl_fw_ini_hcmd_tlv *hcmd = (void *)node->tlv.data;
+ struct iwl_fw_ini_hcmd *hcmd_data = &hcmd->hcmd;
+ u32 domain = le32_to_cpu(hcmd->hdr.domain);
+ u16 hcmd_len = le32_to_cpu(node->tlv.length) - sizeof(*hcmd);
+ struct iwl_host_cmd cmd = {
+ .id = WIDE_ID(hcmd_data->group, hcmd_data->id),
+ .len = { hcmd_len, },
+ .data = { hcmd_data->data, },
+ };
+
+ if (domain != IWL_FW_INI_DOMAIN_ALWAYS_ON &&
+ !(domain & fwrt->trans->dbg.domains_bitmap))
+ continue;
+
+ iwl_trans_send_cmd(fwrt->trans, &cmd);
+ }
+}
+
+static bool is_trig_data_contained(struct iwl_ucode_tlv *new,
+ struct iwl_ucode_tlv *old)
+{
+ struct iwl_fw_ini_trigger_tlv *new_trig = (void *)new->data;
+ struct iwl_fw_ini_trigger_tlv *old_trig = (void *)old->data;
+ __le32 *new_data = new_trig->data, *old_data = old_trig->data;
+ u32 new_dwords_num = iwl_tlv_array_len(new, new_trig, data);
+ u32 old_dwords_num = iwl_tlv_array_len(new, new_trig, data);
+ int i, j;
+
+ for (i = 0; i < new_dwords_num; i++) {
+ bool match = false;
+
+ for (j = 0; j < old_dwords_num; j++) {
+ if (new_data[i] == old_data[j]) {
+ match = true;
+ break;
+ }
+ }
+ if (!match)
+ return false;
+ }
+
+ return true;
+}
+
+static int iwl_dbg_tlv_override_trig_node(struct iwl_fw_runtime *fwrt,
+ struct iwl_ucode_tlv *trig_tlv,
+ struct iwl_dbg_tlv_node *node)
+{
+ struct iwl_ucode_tlv *node_tlv = &node->tlv;
+ struct iwl_fw_ini_trigger_tlv *node_trig = (void *)node_tlv->data;
+ struct iwl_fw_ini_trigger_tlv *trig = (void *)trig_tlv->data;
+ u32 policy = le32_to_cpu(trig->apply_policy);
+ u32 size = le32_to_cpu(trig_tlv->length);
+ u32 trig_data_len = size - sizeof(*trig);
+ u32 offset = 0;
+
+ if (!(policy & IWL_FW_INI_APPLY_POLICY_OVERRIDE_DATA)) {
+ u32 data_len = le32_to_cpu(node_tlv->length) -
+ sizeof(*node_trig);
+
+ IWL_DEBUG_FW(fwrt,
+ "WRT: Appending trigger data (time point %u)\n",
+ le32_to_cpu(trig->time_point));
+
+ offset += data_len;
+ size += data_len;
+ } else {
+ IWL_DEBUG_FW(fwrt,
+ "WRT: Overriding trigger data (time point %u)\n",
+ le32_to_cpu(trig->time_point));
+ }
+
+ if (size != le32_to_cpu(node_tlv->length)) {
+ struct list_head *prev = node->list.prev;
+ struct iwl_dbg_tlv_node *tmp;
+
+ list_del(&node->list);
+
+ tmp = krealloc(node, sizeof(*node) + size, GFP_KERNEL);
+ if (!tmp) {
+ IWL_WARN(fwrt,
+ "WRT: No memory to override trigger (time point %u)\n",
+ le32_to_cpu(trig->time_point));
+
+ list_add(&node->list, prev);
+
+ return -ENOMEM;
+ }
+
+ list_add(&tmp->list, prev);
+ node_tlv = &tmp->tlv;
+ node_trig = (void *)node_tlv->data;
+ }
+
+ memcpy(node_trig->data + offset, trig->data, trig_data_len);
+ node_tlv->length = cpu_to_le32(size);
+
+ if (policy & IWL_FW_INI_APPLY_POLICY_OVERRIDE_CFG) {
+ IWL_DEBUG_FW(fwrt,
+ "WRT: Overriding trigger configuration (time point %u)\n",
+ le32_to_cpu(trig->time_point));
+
+ /* the first 11 dwords are configuration related */
+ memcpy(node_trig, trig, sizeof(__le32) * 11);
+ }
+
+ if (policy & IWL_FW_INI_APPLY_POLICY_OVERRIDE_REGIONS) {
+ IWL_DEBUG_FW(fwrt,
+ "WRT: Overriding trigger regions (time point %u)\n",
+ le32_to_cpu(trig->time_point));
+
+ node_trig->regions_mask = trig->regions_mask;
+ } else {
+ IWL_DEBUG_FW(fwrt,
+ "WRT: Appending trigger regions (time point %u)\n",
+ le32_to_cpu(trig->time_point));
+
+ node_trig->regions_mask |= trig->regions_mask;
+ }
+
+ return 0;
+}
+
+static int
+iwl_dbg_tlv_add_active_trigger(struct iwl_fw_runtime *fwrt,
+ struct list_head *trig_list,
+ struct iwl_ucode_tlv *trig_tlv)
+{
+ struct iwl_fw_ini_trigger_tlv *trig = (void *)trig_tlv->data;
+ struct iwl_dbg_tlv_node *node, *match = NULL;
+ u32 policy = le32_to_cpu(trig->apply_policy);
+
+ list_for_each_entry(node, trig_list, list) {
+ if (!(policy & IWL_FW_INI_APPLY_POLICY_MATCH_TIME_POINT))
+ break;
+
+ if (!(policy & IWL_FW_INI_APPLY_POLICY_MATCH_DATA) ||
+ is_trig_data_contained(trig_tlv, &node->tlv)) {
+ match = node;
+ break;
+ }
}
+
+ if (!match) {
+ IWL_DEBUG_FW(fwrt, "WRT: Enabling trigger (time point %u)\n",
+ le32_to_cpu(trig->time_point));
+ return iwl_dbg_tlv_add(trig_tlv, trig_list);
+ }
+
+ return iwl_dbg_tlv_override_trig_node(fwrt, trig_tlv, match);
+}
+
+static void
+iwl_dbg_tlv_gen_active_trig_list(struct iwl_fw_runtime *fwrt,
+ struct iwl_dbg_tlv_time_point_data *tp)
+{
+ struct iwl_dbg_tlv_node *node, *tmp;
+ struct list_head *trig_list = &tp->trig_list;
+ struct list_head *active_trig_list = &tp->active_trig_list;
+
+ list_for_each_entry_safe(node, tmp, active_trig_list, list) {
+ list_del(&node->list);
+ kfree(node);
+ }
+
+ list_for_each_entry(node, trig_list, list) {
+ struct iwl_ucode_tlv *tlv = &node->tlv;
+ struct iwl_fw_ini_trigger_tlv *trig = (void *)tlv->data;
+ u32 domain = le32_to_cpu(trig->hdr.domain);
+
+ if (domain != IWL_FW_INI_DOMAIN_ALWAYS_ON &&
+ !(domain & fwrt->trans->dbg.domains_bitmap))
+ continue;
+
+ iwl_dbg_tlv_add_active_trigger(fwrt, active_trig_list, tlv);
+ }
+}
+
+int iwl_dbg_tlv_gen_active_trigs(struct iwl_fw_runtime *fwrt, u32 new_domain)
+{
+ int i;
+
+ if (test_and_set_bit(STATUS_GEN_ACTIVE_TRIGS, &fwrt->status))
+ return -EBUSY;
+
+ iwl_fw_flush_dumps(fwrt);
+
+ fwrt->trans->dbg.domains_bitmap = new_domain;
+
+ IWL_DEBUG_FW(fwrt,
+ "WRT: Generating active triggers list, domain 0x%x\n",
+ fwrt->trans->dbg.domains_bitmap);
+
+ for (i = 0; i < ARRAY_SIZE(fwrt->trans->dbg.time_point); i++) {
+ struct iwl_dbg_tlv_time_point_data *tp =
+ &fwrt->trans->dbg.time_point[i];
+
+ iwl_dbg_tlv_gen_active_trig_list(fwrt, tp);
+ }
+
+ clear_bit(STATUS_GEN_ACTIVE_TRIGS, &fwrt->status);
+
+ return 0;
+}
+
+static int
+iwl_dbg_tlv_tp_trigger(struct iwl_fw_runtime *fwrt,
+ struct list_head *active_trig_list,
+ union iwl_dbg_tlv_tp_data *tp_data,
+ bool (*data_check)(struct iwl_fw_runtime *fwrt,
+ struct iwl_fwrt_dump_data *dump_data,
+ union iwl_dbg_tlv_tp_data *tp_data,
+ u32 trig_data))
+{
+ struct iwl_dbg_tlv_node *node;
+
+ list_for_each_entry(node, active_trig_list, list) {
+ struct iwl_fwrt_dump_data dump_data = {
+ .trig = (void *)node->tlv.data,
+ };
+ u32 num_data = iwl_tlv_array_len(&node->tlv, dump_data.trig,
+ data);
+ int ret, i;
+
+ if (!num_data) {
+ ret = iwl_fw_dbg_ini_collect(fwrt, &dump_data);
+ if (ret)
+ return ret;
+ }
+
+ for (i = 0; i < num_data; i++) {
+ if (!data_check ||
+ data_check(fwrt, &dump_data, tp_data,
+ le32_to_cpu(dump_data.trig->data[i]))) {
+ ret = iwl_fw_dbg_ini_collect(fwrt, &dump_data);
+ if (ret)
+ return ret;
+
+ break;
+ }
+ }
+ }
+
+ return 0;
}
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)
{
- /* will be used later */
+ struct list_head *hcmd_list, *trig_list;
+
+ if (!iwl_trans_dbg_ini_valid(fwrt->trans) ||
+ tp_id == IWL_FW_INI_TIME_POINT_INVALID ||
+ tp_id >= IWL_FW_INI_TIME_POINT_NUM)
+ return;
+
+ hcmd_list = &fwrt->trans->dbg.time_point[tp_id].hcmd_list;
+ trig_list = &fwrt->trans->dbg.time_point[tp_id].active_trig_list;
+
+ switch (tp_id) {
+ case IWL_FW_INI_TIME_POINT_EARLY:
+ iwl_dbg_tlv_gen_active_trigs(fwrt, IWL_FW_DBG_DOMAIN);
+ iwl_dbg_tlv_tp_trigger(fwrt, trig_list, tp_data, NULL);
+ break;
+ default:
+ iwl_dbg_tlv_send_hcmds(fwrt, hcmd_list);
+ iwl_dbg_tlv_tp_trigger(fwrt, trig_list, tp_data, NULL);
+ break;
+ }
}
IWL_EXPORT_SYMBOL(iwl_dbg_tlv_time_point);
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.h b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.h
index 64c0638998f2..f18946872569 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.h
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.h
@@ -85,10 +85,12 @@ union iwl_dbg_tlv_tp_data {
/**
* struct iwl_dbg_tlv_time_point_data
* @trig_list: list of triggers
+ * @active_trig_list: list of active triggers
* @hcmd_list: list of host commands
*/
struct iwl_dbg_tlv_time_point_data {
struct list_head trig_list;
+ struct list_head active_trig_list;
struct list_head hcmd_list;
};
@@ -103,6 +105,7 @@ void iwl_dbg_tlv_init(struct iwl_trans *trans);
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);
+int iwl_dbg_tlv_gen_active_trigs(struct iwl_fw_runtime *fwrt, u32 new_domain);
void iwl_dbg_tlv_del_timers(struct iwl_trans *trans);
#endif /* __iwl_dbg_tlv_h__*/
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
index 63031c030600..59debf6e1b9d 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
@@ -724,6 +724,8 @@ struct iwl_self_init_dram {
* @active_regions: active regions
* @debug_info_tlv_list: list of debug info TLVs
* @time_point: array of debug time points
+ * @domains_bitmap: bitmap of active domains other than
+ * &IWL_FW_INI_DOMAIN_ALWAYS_ON
*/
struct iwl_trans_debug {
u8 n_dest_reg;
@@ -752,6 +754,8 @@ struct iwl_trans_debug {
struct list_head debug_info_tlv_list;
struct iwl_dbg_tlv_time_point_data
time_point[IWL_FW_INI_TIME_POINT_NUM];
+
+ u32 domains_bitmap;
};
/**
--
2.16.4