Commit b7a79404 authored by Reinette Chatre's avatar Reinette Chatre Committed by John W. Linville
Browse files

iwlwifi: fix 3945 ucode info retrieval after failure



When hardware or uCode problem occurs driver captures significant
information from device to enable debugging. The format of this information
is different between 3945 and 4965 and later devices, yet currently the
3945 uses the 4965 and later format. Fix this by adding a new library call
that is initialized to the correct formatting routine based on device.

This moves the iwlagn event and error log handling back to iwl-agn.c to
make it part of iwlagn module.

Also remove the 3945 sysfs file that triggers dump of event log - there is
already a debugfs file that can do it for all drivers.
Signed-off-by: default avatarReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 28142986
......@@ -99,6 +99,8 @@ static struct iwl_lib_ops iwl1000_lib = {
.setup_deferred_work = iwl5000_setup_deferred_work,
.is_valid_rtc_data_addr = iwl5000_hw_valid_rtc_data_addr,
.load_ucode = iwl5000_load_ucode,
.dump_nic_event_log = iwl_dump_nic_event_log,
.dump_nic_error_log = iwl_dump_nic_error_log,
.init_alive_start = iwl5000_init_alive_start,
.alive_notify = iwl5000_alive_notify,
.send_tx_power = iwl5000_send_tx_power,
......
......@@ -2839,6 +2839,8 @@ static struct iwl_lib_ops iwl3945_lib = {
.txq_free_tfd = iwl3945_hw_txq_free_tfd,
.txq_init = iwl3945_hw_tx_queue_init,
.load_ucode = iwl3945_load_bsm,
.dump_nic_event_log = iwl3945_dump_nic_event_log,
.dump_nic_error_log = iwl3945_dump_nic_error_log,
.apm_ops = {
.init = iwl3945_apm_init,
.reset = iwl3945_apm_reset,
......
......@@ -209,6 +209,8 @@ extern int __must_check iwl3945_send_cmd(struct iwl_priv *priv,
struct iwl_host_cmd *cmd);
extern unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
struct ieee80211_hdr *hdr,int left);
extern void iwl3945_dump_nic_event_log(struct iwl_priv *priv);
extern void iwl3945_dump_nic_error_log(struct iwl_priv *priv);
/*
* Currently used by iwl-3945-rs... look at restructuring so that it doesn't
......
......@@ -2298,6 +2298,8 @@ static struct iwl_lib_ops iwl4965_lib = {
.alive_notify = iwl4965_alive_notify,
.init_alive_start = iwl4965_init_alive_start,
.load_ucode = iwl4965_load_bsm,
.dump_nic_event_log = iwl_dump_nic_event_log,
.dump_nic_error_log = iwl_dump_nic_error_log,
.apm_ops = {
.init = iwl4965_apm_init,
.reset = iwl4965_apm_reset,
......
......@@ -1535,6 +1535,8 @@ struct iwl_lib_ops iwl5000_lib = {
.rx_handler_setup = iwl5000_rx_handler_setup,
.setup_deferred_work = iwl5000_setup_deferred_work,
.is_valid_rtc_data_addr = iwl5000_hw_valid_rtc_data_addr,
.dump_nic_event_log = iwl_dump_nic_event_log,
.dump_nic_error_log = iwl_dump_nic_error_log,
.load_ucode = iwl5000_load_ucode,
.init_alive_start = iwl5000_init_alive_start,
.alive_notify = iwl5000_alive_notify,
......@@ -1585,6 +1587,8 @@ static struct iwl_lib_ops iwl5150_lib = {
.rx_handler_setup = iwl5000_rx_handler_setup,
.setup_deferred_work = iwl5000_setup_deferred_work,
.is_valid_rtc_data_addr = iwl5000_hw_valid_rtc_data_addr,
.dump_nic_event_log = iwl_dump_nic_event_log,
.dump_nic_error_log = iwl_dump_nic_error_log,
.load_ucode = iwl5000_load_ucode,
.init_alive_start = iwl5000_init_alive_start,
.alive_notify = iwl5000_alive_notify,
......
......@@ -100,6 +100,8 @@ static struct iwl_lib_ops iwl6000_lib = {
.setup_deferred_work = iwl5000_setup_deferred_work,
.is_valid_rtc_data_addr = iwl5000_hw_valid_rtc_data_addr,
.load_ucode = iwl5000_load_ucode,
.dump_nic_event_log = iwl_dump_nic_event_log,
.dump_nic_error_log = iwl_dump_nic_error_log,
.init_alive_start = iwl5000_init_alive_start,
.alive_notify = iwl5000_alive_notify,
.send_tx_power = iwl5000_send_tx_power,
......
......@@ -1526,6 +1526,191 @@ static int iwl_read_ucode(struct iwl_priv *priv)
return ret;
}
#ifdef CONFIG_IWLWIFI_DEBUG
static const char *desc_lookup_text[] = {
"OK",
"FAIL",
"BAD_PARAM",
"BAD_CHECKSUM",
"NMI_INTERRUPT_WDG",
"SYSASSERT",
"FATAL_ERROR",
"BAD_COMMAND",
"HW_ERROR_TUNE_LOCK",
"HW_ERROR_TEMPERATURE",
"ILLEGAL_CHAN_FREQ",
"VCC_NOT_STABLE",
"FH_ERROR",
"NMI_INTERRUPT_HOST",
"NMI_INTERRUPT_ACTION_PT",
"NMI_INTERRUPT_UNKNOWN",
"UCODE_VERSION_MISMATCH",
"HW_ERROR_ABS_LOCK",
"HW_ERROR_CAL_LOCK_FAIL",
"NMI_INTERRUPT_INST_ACTION_PT",
"NMI_INTERRUPT_DATA_ACTION_PT",
"NMI_TRM_HW_ER",
"NMI_INTERRUPT_TRM",
"NMI_INTERRUPT_BREAK_POINT"
"DEBUG_0",
"DEBUG_1",
"DEBUG_2",
"DEBUG_3",
"UNKNOWN"
};
static const char *desc_lookup(int i)
{
int max = ARRAY_SIZE(desc_lookup_text) - 1;
if (i < 0 || i > max)
i = max;
return desc_lookup_text[i];
}
#define ERROR_START_OFFSET (1 * sizeof(u32))
#define ERROR_ELEM_SIZE (7 * sizeof(u32))
void iwl_dump_nic_error_log(struct iwl_priv *priv)
{
u32 data2, line;
u32 desc, time, count, base, data1;
u32 blink1, blink2, ilink1, ilink2;
if (priv->ucode_type == UCODE_INIT)
base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
else
base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
return;
}
count = iwl_read_targ_mem(priv, base);
if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
IWL_ERR(priv, "Start IWL Error Log Dump:\n");
IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
priv->status, count);
}
desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
IWL_ERR(priv, "Desc Time "
"data1 data2 line\n");
IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
desc_lookup(desc), desc, time, data1, data2, line);
IWL_ERR(priv, "blink1 blink2 ilink1 ilink2\n");
IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
ilink1, ilink2);
}
#define EVENT_START_OFFSET (4 * sizeof(u32))
/**
* iwl_print_event_log - Dump error event log to syslog
*
*/
static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
u32 num_events, u32 mode)
{
u32 i;
u32 base; /* SRAM byte address of event log header */
u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
u32 ptr; /* SRAM byte address of log data */
u32 ev, time, data; /* event log data */
if (num_events == 0)
return;
if (priv->ucode_type == UCODE_INIT)
base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
else
base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
if (mode == 0)
event_size = 2 * sizeof(u32);
else
event_size = 3 * sizeof(u32);
ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
/* "time" is actually "data" for mode 0 (no timestamp).
* place event id # at far right for easier visual parsing. */
for (i = 0; i < num_events; i++) {
ev = iwl_read_targ_mem(priv, ptr);
ptr += sizeof(u32);
time = iwl_read_targ_mem(priv, ptr);
ptr += sizeof(u32);
if (mode == 0) {
/* data, ev */
IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev);
} else {
data = iwl_read_targ_mem(priv, ptr);
ptr += sizeof(u32);
IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
time, data, ev);
}
}
}
void iwl_dump_nic_event_log(struct iwl_priv *priv)
{
u32 base; /* SRAM byte address of event log header */
u32 capacity; /* event log capacity in # entries */
u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
u32 num_wraps; /* # times uCode wrapped to top of log */
u32 next_entry; /* index of next entry to be written by uCode */
u32 size; /* # entries that we'll print */
if (priv->ucode_type == UCODE_INIT)
base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
else
base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
return;
}
/* event log header */
capacity = iwl_read_targ_mem(priv, base);
mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
size = num_wraps ? capacity : next_entry;
/* bail out if nothing in log */
if (size == 0) {
IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
return;
}
IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
size, num_wraps);
/* if uCode has wrapped back to top of log, start at the oldest entry,
* i.e the next one that uCode would fill. */
if (num_wraps)
iwl_print_event_log(priv, next_entry,
capacity - next_entry, mode);
/* (then/else) start at top of log */
iwl_print_event_log(priv, 0, next_entry, mode);
}
#endif
/**
* iwl_alive_start - called after REPLY_ALIVE notification received
* from protocol/runtime uCode (initialization uCode's
......
......@@ -1309,189 +1309,6 @@ static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
}
static const char *desc_lookup_text[] = {
"OK",
"FAIL",
"BAD_PARAM",
"BAD_CHECKSUM",
"NMI_INTERRUPT_WDG",
"SYSASSERT",
"FATAL_ERROR",
"BAD_COMMAND",
"HW_ERROR_TUNE_LOCK",
"HW_ERROR_TEMPERATURE",
"ILLEGAL_CHAN_FREQ",
"VCC_NOT_STABLE",
"FH_ERROR",
"NMI_INTERRUPT_HOST",
"NMI_INTERRUPT_ACTION_PT",
"NMI_INTERRUPT_UNKNOWN",
"UCODE_VERSION_MISMATCH",
"HW_ERROR_ABS_LOCK",
"HW_ERROR_CAL_LOCK_FAIL",
"NMI_INTERRUPT_INST_ACTION_PT",
"NMI_INTERRUPT_DATA_ACTION_PT",
"NMI_TRM_HW_ER",
"NMI_INTERRUPT_TRM",
"NMI_INTERRUPT_BREAK_POINT"
"DEBUG_0",
"DEBUG_1",
"DEBUG_2",
"DEBUG_3",
"UNKNOWN"
};
static const char *desc_lookup(int i)
{
int max = ARRAY_SIZE(desc_lookup_text) - 1;
if (i < 0 || i > max)
i = max;
return desc_lookup_text[i];
}
#define ERROR_START_OFFSET (1 * sizeof(u32))
#define ERROR_ELEM_SIZE (7 * sizeof(u32))
static void iwl_dump_nic_error_log(struct iwl_priv *priv)
{
u32 data2, line;
u32 desc, time, count, base, data1;
u32 blink1, blink2, ilink1, ilink2;
if (priv->ucode_type == UCODE_INIT)
base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
else
base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
return;
}
count = iwl_read_targ_mem(priv, base);
if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
IWL_ERR(priv, "Start IWL Error Log Dump:\n");
IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
priv->status, count);
}
desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
IWL_ERR(priv, "Desc Time "
"data1 data2 line\n");
IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
desc_lookup(desc), desc, time, data1, data2, line);
IWL_ERR(priv, "blink1 blink2 ilink1 ilink2\n");
IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
ilink1, ilink2);
}
#define EVENT_START_OFFSET (4 * sizeof(u32))
/**
* iwl_print_event_log - Dump error event log to syslog
*
*/
static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
u32 num_events, u32 mode)
{
u32 i;
u32 base; /* SRAM byte address of event log header */
u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
u32 ptr; /* SRAM byte address of log data */
u32 ev, time, data; /* event log data */
if (num_events == 0)
return;
if (priv->ucode_type == UCODE_INIT)
base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
else
base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
if (mode == 0)
event_size = 2 * sizeof(u32);
else
event_size = 3 * sizeof(u32);
ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
/* "time" is actually "data" for mode 0 (no timestamp).
* place event id # at far right for easier visual parsing. */
for (i = 0; i < num_events; i++) {
ev = iwl_read_targ_mem(priv, ptr);
ptr += sizeof(u32);
time = iwl_read_targ_mem(priv, ptr);
ptr += sizeof(u32);
if (mode == 0) {
/* data, ev */
IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev);
} else {
data = iwl_read_targ_mem(priv, ptr);
ptr += sizeof(u32);
IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
time, data, ev);
}
}
}
void iwl_dump_nic_event_log(struct iwl_priv *priv)
{
u32 base; /* SRAM byte address of event log header */
u32 capacity; /* event log capacity in # entries */
u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
u32 num_wraps; /* # times uCode wrapped to top of log */
u32 next_entry; /* index of next entry to be written by uCode */
u32 size; /* # entries that we'll print */
if (priv->ucode_type == UCODE_INIT)
base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
else
base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
return;
}
/* event log header */
capacity = iwl_read_targ_mem(priv, base);
mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
size = num_wraps ? capacity : next_entry;
/* bail out if nothing in log */
if (size == 0) {
IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
return;
}
IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
size, num_wraps);
/* if uCode has wrapped back to top of log, start at the oldest entry,
* i.e the next one that uCode would fill. */
if (num_wraps)
iwl_print_event_log(priv, next_entry,
capacity - next_entry, mode);
/* (then/else) start at top of log */
iwl_print_event_log(priv, 0, next_entry, mode);
}
#endif
/**
* iwl_irq_handle_error - called for HW or SW error interrupt from card
......@@ -1506,8 +1323,8 @@ void iwl_irq_handle_error(struct iwl_priv *priv)
#ifdef CONFIG_IWLWIFI_DEBUG
if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) {
iwl_dump_nic_error_log(priv);
iwl_dump_nic_event_log(priv);
priv->cfg->ops->lib->dump_nic_error_log(priv);
priv->cfg->ops->lib->dump_nic_event_log(priv);
iwl_print_rx_config_cmd(priv);
}
#endif
......
......@@ -166,6 +166,8 @@ struct iwl_lib_ops {
int (*is_valid_rtc_data_addr)(u32 addr);
/* 1st ucode load */
int (*load_ucode)(struct iwl_priv *priv);
void (*dump_nic_event_log)(struct iwl_priv *priv);
void (*dump_nic_error_log)(struct iwl_priv *priv);
/* power management */
struct iwl_apm_ops apm_ops;
......@@ -540,7 +542,19 @@ int iwl_pci_resume(struct pci_dev *pdev);
/*****************************************************
* Error Handling Debugging
******************************************************/
#ifdef CONFIG_IWLWIFI_DEBUG
void iwl_dump_nic_event_log(struct iwl_priv *priv);
void iwl_dump_nic_error_log(struct iwl_priv *priv);
#else
static inline void iwl_dump_nic_event_log(struct iwl_priv *priv)
{
}
static inline void iwl_dump_nic_error_log(struct iwl_priv *priv)
{
}
#endif
void iwl_clear_isr_stats(struct iwl_priv *priv);
/*****************************************************
......
......@@ -436,7 +436,7 @@ static ssize_t iwl_dbgfs_log_event_write(struct file *file,
if (sscanf(buf, "%d", &event_log_flag) != 1)
return -EFAULT;
if (event_log_flag == 1)
iwl_dump_nic_event_log(priv);
priv->cfg->ops->lib->dump_nic_event_log(priv);
return count;
}
......
......@@ -1481,6 +1481,7 @@ static inline void iwl_synchronize_irq(struct iwl_priv *priv)
tasklet_kill(&priv->irq_tasklet);
}
#ifdef CONFIG_IWLWIFI_DEBUG
static const char *desc_lookup(int i)
{
switch (i) {
......@@ -1504,7 +1505,7 @@ static const char *desc_lookup(int i)
#define ERROR_START_OFFSET (1 * sizeof(u32))
#define ERROR_ELEM_SIZE (7 * sizeof(u32))
static void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
{
u32 i;
u32 desc, time, count, base, data1;
......@@ -1598,7 +1599,7 @@ static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
}
}
static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
{
u32 base; /* SRAM byte address of event log header */
u32 capacity; /* event log capacity in # entries */
......@@ -1640,6 +1641,16 @@ static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
iwl3945_print_event_log(priv, 0, next_entry, mode);
}
#else
void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
{
}
void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
{
}
#endif
static void iwl3945_irq_tasklet(struct iwl_priv *priv)
{
......@@ -3683,21 +3694,6 @@ static ssize_t dump_error_log(struct device *d,
static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
static ssize_t dump_event_log(struct device *d,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct iwl_priv *priv = dev_get_drvdata(d);
char *p = (char *)buf;
if (p[0] == '1')
iwl3945_dump_nic_event_log(priv);
return strnlen(buf, count);
}
static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
/*****************************************************************************
*
* driver setup and tear down
......@@ -3742,7 +3738,6 @@ static struct attribute *iwl3945_sysfs_entries[] = {
&dev_attr_antenna.attr,
&dev_attr_channels.attr,
&dev_attr_dump_errors.attr,
&dev_attr_dump_events.attr,
&dev_attr_flags.attr,
&dev_attr_filter_flags.attr,
#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
......
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