@@ -22,6 +22,8 @@
#include <linux/if_ether.h>
#include <linux/types.h>
#include <linux/pci.h>
+#include <linux/uuid.h>
+#include <linux/time.h>
#include "htt.h"
#include "htc.h"
@@ -278,6 +280,15 @@ struct ath10k_vif_iter {
struct ath10k_vif *arvif;
};
+/* used for crash-dump storage, protected by data-lock */
+struct ath10k_fw_crash_data {
+ bool crashed_since_read;
+
+ uuid_le uuid;
+ struct timespec timestamp;
+ __le32 registers[REG_DUMP_COUNT_QCA988X];
+};
+
struct ath10k_debug {
struct dentry *debugfs_phy;
@@ -295,6 +306,8 @@ struct ath10k_debug {
u8 htt_max_amsdu;
u8 htt_max_ampdu;
+
+ struct ath10k_fw_crash_data *fw_crash_data;
};
enum ath10k_state {
@@ -17,6 +17,9 @@
#include <linux/module.h>
#include <linux/debugfs.h>
+#include <linux/version.h>
+#include <linux/vermagic.h>
+#include <linux/vmalloc.h>
#include "core.h"
#include "debug.h"
@@ -24,6 +27,85 @@
/* ms */
#define ATH10K_DEBUG_HTT_STATS_INTERVAL 1000
+#define ATH10K_FW_CRASH_DUMP_VERSION 1
+
+/**
+ * enum ath10k_fw_crash_dump_type - types of data in the dump file
+ * @ATH10K_FW_CRASH_DUMP_REGDUMP: Register crash dump in binary format
+ */
+enum ath10k_fw_crash_dump_type {
+ ATH10K_FW_CRASH_DUMP_REGISTERS = 0,
+
+ ATH10K_FW_CRASH_DUMP_MAX,
+};
+
+struct ath10k_tlv_dump_data {
+ /* see ath10k_fw_crash_dump_type above */
+ __le32 type;
+
+ /* in bytes */
+ __le32 tlv_len;
+
+ /* pad to 32-bit boundaries as needed */
+ u8 tlv_data[];
+} __packed;
+
+struct ath10k_dump_file_data {
+ /* dump file information */
+
+ /* "ATH10K-FW-DUMP" */
+ char df_magic[16];
+
+ __le32 len;
+
+ /* file dump version */
+ __le32 version;
+
+ /* some info we can get from ath10k struct that might help */
+
+ u8 uuid[16];
+
+ __le32 chip_id;
+
+ /* 0 for now, in place for later hardware */
+ __le32 bus_type;
+
+ __le32 target_version;
+ __le32 fw_version_major;
+ __le32 fw_version_minor;
+ __le32 fw_version_release;
+ __le32 fw_version_build;
+ __le32 phy_capability;
+ __le32 hw_min_tx_power;
+ __le32 hw_max_tx_power;
+ __le32 ht_cap_info;
+ __le32 vht_cap_info;
+ __le32 num_rf_chains;
+
+ /* firmware version string */
+ char fw_ver[ETHTOOL_FWVERS_LEN];
+
+ /* Kernel related information */
+
+ /* time-of-day stamp */
+ __le64 tv_sec;
+
+ /* time-of-day stamp, nano-seconds */
+ __le64 tv_nsec;
+
+ /* LINUX_VERSION_CODE */
+ __le32 kernel_ver_code;
+
+ /* VERMAGIC_STRING */
+ char kernel_ver[64];
+
+ /* room for growth w/out changing binary format */
+ u8 unused[128];
+
+ /* struct ath10k_tlv_dump_data + more */
+ u8 data[0];
+} __packed;
+
static int ath10k_printk(const char *level, const char *fmt, ...)
{
struct va_format vaf;
@@ -588,6 +670,148 @@ static const struct file_operations fops_chip_id = {
.llseek = default_llseek,
};
+struct ath10k_fw_crash_data *
+ath10k_debug_get_new_fw_crash_data(struct ath10k *ar)
+{
+ struct ath10k_fw_crash_data *crash_data = ar->debug.fw_crash_data;
+
+ lockdep_assert_held(&ar->data_lock);
+
+ crash_data->crashed_since_read = true;
+ uuid_le_gen(&crash_data->uuid);
+ getnstimeofday(&crash_data->timestamp);
+
+ return crash_data;
+}
+EXPORT_SYMBOL(ath10k_debug_get_new_fw_crash_data);
+
+static struct ath10k_dump_file_data *ath10k_build_dump_file(struct ath10k *ar)
+{
+ struct ath10k_fw_crash_data *crash_data = ar->debug.fw_crash_data;
+ struct ath10k_dump_file_data *dump_data;
+ struct ath10k_tlv_dump_data *dump_tlv;
+ int hdr_len = sizeof(*dump_data);
+ unsigned int len, sofar = 0;
+ unsigned char *buf;
+
+ lockdep_assert_held(&ar->conf_mutex);
+
+ len = hdr_len;
+ len += sizeof(*dump_tlv) + sizeof(crash_data->registers);
+
+ sofar += hdr_len;
+
+ /* This is going to get big when we start dumping FW RAM and such,
+ * so go ahead and use vmalloc.
+ */
+ buf = vzalloc(len);
+ if (!buf)
+ return NULL;
+
+ spin_lock_bh(&ar->data_lock);
+
+ if (!crash_data->crashed_since_read) {
+ spin_unlock_bh(&ar->data_lock);
+ vfree(buf);
+ return NULL;
+ }
+
+ dump_data = (struct ath10k_dump_file_data *)(buf);
+ strlcpy(dump_data->df_magic, "ATH10K-FW-DUMP",
+ sizeof(dump_data->df_magic));
+ dump_data->len = cpu_to_le32(len);
+
+ dump_data->version = cpu_to_le32(ATH10K_FW_CRASH_DUMP_VERSION);
+
+ memcpy(dump_data->uuid, &crash_data->uuid, sizeof(dump_data->uuid));
+ dump_data->chip_id = cpu_to_le32(ar->chip_id);
+ dump_data->bus_type = cpu_to_le32(0);
+ dump_data->target_version = cpu_to_le32(ar->target_version);
+ dump_data->fw_version_major = cpu_to_le32(ar->fw_version_major);
+ dump_data->fw_version_minor = cpu_to_le32(ar->fw_version_minor);
+ dump_data->fw_version_release = cpu_to_le32(ar->fw_version_release);
+ dump_data->fw_version_build = cpu_to_le32(ar->fw_version_build);
+ dump_data->phy_capability = cpu_to_le32(ar->phy_capability);
+ dump_data->hw_min_tx_power = cpu_to_le32(ar->hw_min_tx_power);
+ dump_data->hw_max_tx_power = cpu_to_le32(ar->hw_max_tx_power);
+ dump_data->ht_cap_info = cpu_to_le32(ar->ht_cap_info);
+ dump_data->vht_cap_info = cpu_to_le32(ar->vht_cap_info);
+ dump_data->num_rf_chains = cpu_to_le32(ar->num_rf_chains);
+
+ strlcpy(dump_data->fw_ver, ar->hw->wiphy->fw_version,
+ sizeof(dump_data->fw_ver));
+
+ dump_data->kernel_ver_code = cpu_to_le32(LINUX_VERSION_CODE);
+ strlcpy(dump_data->kernel_ver, VERMAGIC_STRING,
+ sizeof(dump_data->kernel_ver));
+
+ dump_data->tv_sec = cpu_to_le64(crash_data->timestamp.tv_sec);
+ dump_data->tv_nsec = cpu_to_le64(crash_data->timestamp.tv_nsec);
+
+ /* Gather crash-dump */
+ dump_tlv = (struct ath10k_tlv_dump_data *)(buf + sofar);
+ dump_tlv->type = cpu_to_le32(ATH10K_FW_CRASH_DUMP_REGISTERS);
+ dump_tlv->tlv_len = cpu_to_le32(sizeof(crash_data->registers));
+ memcpy(dump_tlv->tlv_data, &crash_data->registers,
+ sizeof(crash_data->registers));
+ sofar += sizeof(*dump_tlv) + sizeof(crash_data->registers);
+
+ ar->debug.fw_crash_data->crashed_since_read = false;
+
+ spin_unlock_bh(&ar->data_lock);
+
+ return dump_data;
+}
+
+static int ath10k_fw_crash_dump_open(struct inode *inode, struct file *file)
+{
+ struct ath10k *ar = inode->i_private;
+ struct ath10k_dump_file_data *dump;
+ int ret;
+
+ mutex_lock(&ar->conf_mutex);
+
+ dump = ath10k_build_dump_file(ar);
+ if (!dump) {
+ ret = -ENODATA;
+ goto out;
+ }
+
+ file->private_data = dump;
+ ret = 0;
+
+out:
+ mutex_unlock(&ar->conf_mutex);
+ return ret;
+}
+
+static ssize_t ath10k_fw_crash_dump_read(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath10k_dump_file_data *dump_file = file->private_data;
+
+ return simple_read_from_buffer(user_buf, count, ppos,
+ dump_file,
+ le32_to_cpu(dump_file->len));
+}
+
+static int ath10k_fw_crash_dump_release(struct inode *inode,
+ struct file *file)
+{
+ vfree(file->private_data);
+
+ return 0;
+}
+
+static const struct file_operations fops_fw_crash_dump = {
+ .open = ath10k_fw_crash_dump_open,
+ .read = ath10k_fw_crash_dump_read,
+ .release = ath10k_fw_crash_dump_release,
+ .owner = THIS_MODULE,
+ .llseek = default_llseek,
+};
+
static int ath10k_debug_htt_stats_req(struct ath10k *ar)
{
u64 cookie;
@@ -921,11 +1145,20 @@ static const struct file_operations fops_dfs_stats = {
int ath10k_debug_create(struct ath10k *ar)
{
+ int ret;
+
+ ar->debug.fw_crash_data = vzalloc(sizeof(*ar->debug.fw_crash_data));
+ if (!ar->debug.fw_crash_data) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
ar->debug.debugfs_phy = debugfs_create_dir("ath10k",
ar->hw->wiphy->debugfsdir);
-
- if (!ar->debug.debugfs_phy)
- return -ENOMEM;
+ if (!ar->debug.debugfs_phy) {
+ ret = -ENOMEM;
+ goto err_free_fw_crash_data;
+ }
INIT_DELAYED_WORK(&ar->debug.htt_stats_dwork,
ath10k_debug_htt_stats_dwork);
@@ -941,6 +1174,9 @@ int ath10k_debug_create(struct ath10k *ar)
debugfs_create_file("simulate_fw_crash", S_IRUSR, ar->debug.debugfs_phy,
ar, &fops_simulate_fw_crash);
+ debugfs_create_file("fw_crash_dump", S_IRUSR, ar->debug.debugfs_phy,
+ ar, &fops_fw_crash_dump);
+
debugfs_create_file("chip_id", S_IRUSR, ar->debug.debugfs_phy,
ar, &fops_chip_id);
@@ -969,10 +1205,17 @@ int ath10k_debug_create(struct ath10k *ar)
}
return 0;
+
+err_free_fw_crash_data:
+ vfree(ar->debug.fw_crash_data);
+
+err:
+ return ret;
}
void ath10k_debug_destroy(struct ath10k *ar)
{
+ vfree(ar->debug.fw_crash_data);
cancel_delayed_work_sync(&ar->debug.htt_stats_dwork);
}
@@ -53,6 +53,10 @@ void ath10k_debug_read_service_map(struct ath10k *ar,
size_t map_size);
void ath10k_debug_read_target_stats(struct ath10k *ar,
struct wmi_stats_event *ev);
+struct ath10k_fw_crash_data *
+ath10k_debug_get_new_fw_crash_data(struct ath10k *ar);
+
+void ath10k_debug_dbglog_add(struct ath10k *ar, u8 *buffer, int len);
#define ATH10K_DFS_STAT_INC(ar, c) (ar->debug.dfs_stats.c++)
@@ -86,6 +90,17 @@ static inline void ath10k_debug_read_target_stats(struct ath10k *ar,
{
}
+static inline void ath10k_debug_dbglog_add(struct ath10k *ar, u8 *buffer,
+ int len)
+{
+}
+
+static inline struct ath10k_fw_crash_data *
+ath10k_debug_get_new_fw_crash_data(struct ath10k *ar)
+{
+ return NULL;
+}
+
#define ATH10K_DFS_STAT_INC(ar, c) do { } while (0)
#endif /* CONFIG_ATH10K_DEBUGFS */
@@ -39,6 +39,8 @@
/* includes also the null byte */
#define ATH10K_FIRMWARE_MAGIC "QCA-ATH10K"
+#define REG_DUMP_COUNT_QCA988X 60
+
struct ath10k_fw_ie {
__le32 id;
__le32 len;
@@ -832,16 +832,13 @@ static u16 ath10k_pci_hif_get_free_queue_number(struct ath10k *ar, u8 pipe)
return ath10k_ce_num_free_src_entries(ar_pci->pipe_info[pipe].ce_hdl);
}
-static void ath10k_pci_hif_dump_area(struct ath10k *ar)
+static void ath10k_pci_dump_registers(struct ath10k *ar,
+ struct ath10k_fw_crash_data *crash_data)
{
- u32 reg_dump_values[REG_DUMP_COUNT_QCA988X] = {};
+ u32 i, reg_dump_values[REG_DUMP_COUNT_QCA988X] = {};
int ret;
- u32 i;
- ath10k_err("firmware crashed!\n");
- ath10k_err("hardware name %s version 0x%x\n",
- ar->hw_params.name, ar->target_version);
- ath10k_err("firmware version: %s\n", ar->hw->wiphy->fw_version);
+ lockdep_assert_held(&ar->data_lock);
ret = ath10k_pci_diag_read_hi(ar, ®_dump_values[0],
hi_failure_state,
@@ -862,6 +859,38 @@ static void ath10k_pci_hif_dump_area(struct ath10k *ar)
reg_dump_values[i + 2],
reg_dump_values[i + 3]);
+ /* crash_data is in little endian */
+ for (i = 0; i < REG_DUMP_COUNT_QCA988X; i++)
+ crash_data->registers[i] = cpu_to_le32(reg_dump_values[i]);
+}
+
+static void ath10k_pci_hif_dump_area(struct ath10k *ar)
+{
+ struct ath10k_fw_crash_data *crash_data;
+ char uuid[50];
+
+ spin_lock_bh(&ar->data_lock);
+
+ crash_data = ath10k_debug_get_new_fw_crash_data(ar);
+
+ if (crash_data)
+ scnprintf(uuid, sizeof(uuid), "%pUl", &crash_data->uuid);
+ else
+ scnprintf(uuid, sizeof(uuid), "n/a");
+
+ ath10k_err("firmware crashed! (uuid %s)\n", uuid);
+ ath10k_err("hardware name %s version 0x%x\n",
+ ar->hw_params.name, ar->target_version);
+ ath10k_err("firmware version: %s\n", ar->hw->wiphy->fw_version);
+
+ if (!crash_data)
+ goto exit;
+
+ ath10k_pci_dump_registers(ar, crash_data);
+
+exit:
+ spin_unlock_bh(&ar->data_lock);
+
queue_work(ar->workqueue, &ar->restart_work);
}
@@ -23,9 +23,6 @@
#include "hw.h"
#include "ce.h"
-/* FW dump area */
-#define REG_DUMP_COUNT_QCA988X 60
-
/*
* maximum number of bytes that can be handled atomically by DiagRead/DiagWrite
*/