diff options
Diffstat (limited to 'drivers/net/wireless/ipw2200.c')
-rw-r--r-- | drivers/net/wireless/ipw2200.c | 251 |
1 files changed, 175 insertions, 76 deletions
diff --git a/drivers/net/wireless/ipw2200.c b/drivers/net/wireless/ipw2200.c index 6e862c2905d..a3283caaa87 100644 --- a/drivers/net/wireless/ipw2200.c +++ b/drivers/net/wireless/ipw2200.c @@ -428,6 +428,7 @@ static inline void ipw_disable_interrupts(struct ipw_priv *priv) ipw_write32(priv, IPW_INTA_MASK_R, ~IPW_INTA_MASK_ALL); } +#ifdef CONFIG_IPW_DEBUG static char *ipw_error_desc(u32 val) { switch (val) { @@ -466,56 +467,35 @@ static char *ipw_error_desc(u32 val) } } -static void ipw_dump_nic_error_log(struct ipw_priv *priv) +static void ipw_dump_error_log(struct ipw_priv *priv, + struct ipw_fw_error *error) { - u32 desc, time, blink1, blink2, ilink1, ilink2, idata, i, count, base; - - base = ipw_read32(priv, IPWSTATUS_ERROR_LOG); - count = ipw_read_reg32(priv, base); + u32 i; - if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) { - IPW_ERROR("Start IPW Error Log Dump:\n"); - IPW_ERROR("Status: 0x%08X, Config: %08X\n", - priv->status, priv->config); + if (!error) { + IPW_ERROR("Error allocating and capturing error log. " + "Nothing to dump.\n"); + return; } - for (i = ERROR_START_OFFSET; - i <= count * ERROR_ELEM_SIZE; i += ERROR_ELEM_SIZE) { - desc = ipw_read_reg32(priv, base + i); - time = ipw_read_reg32(priv, base + i + 1 * sizeof(u32)); - blink1 = ipw_read_reg32(priv, base + i + 2 * sizeof(u32)); - blink2 = ipw_read_reg32(priv, base + i + 3 * sizeof(u32)); - ilink1 = ipw_read_reg32(priv, base + i + 4 * sizeof(u32)); - ilink2 = ipw_read_reg32(priv, base + i + 5 * sizeof(u32)); - idata = ipw_read_reg32(priv, base + i + 6 * sizeof(u32)); + IPW_ERROR("Start IPW Error Log Dump:\n"); + IPW_ERROR("Status: 0x%08X, Config: %08X\n", + error->status, error->config); + for (i = 0; i < error->elem_len; i++) IPW_ERROR("%s %i 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x\n", - ipw_error_desc(desc), time, blink1, blink2, - ilink1, ilink2, idata); - } + ipw_error_desc(error->elem[i].desc), + error->elem[i].time, + error->elem[i].blink1, + error->elem[i].blink2, + error->elem[i].link1, + error->elem[i].link2, error->elem[i].data); + for (i = 0; i < error->log_len; i++) + IPW_ERROR("%i\t0x%08x\t%i\n", + error->log[i].time, + error->log[i].event, error->log[i].data); } - -static void ipw_dump_nic_event_log(struct ipw_priv *priv) -{ - u32 ev, time, data, i, count, base; - - base = ipw_read32(priv, IPW_EVENT_LOG); - count = ipw_read_reg32(priv, base); - - if (EVENT_START_OFFSET <= count * EVENT_ELEM_SIZE) - IPW_ERROR("Start IPW Event Log Dump:\n"); - - for (i = EVENT_START_OFFSET; - i <= count * EVENT_ELEM_SIZE; i += EVENT_ELEM_SIZE) { - ev = ipw_read_reg32(priv, base + i); - time = ipw_read_reg32(priv, base + i + 1 * sizeof(u32)); - data = ipw_read_reg32(priv, base + i + 2 * sizeof(u32)); - -#ifdef CONFIG_IPW_DEBUG - IPW_ERROR("%i\t0x%08x\t%i\n", time, data, ev); #endif - } -} static inline int ipw_is_init(struct ipw_priv *priv) { @@ -1058,6 +1038,130 @@ static ssize_t store_debug_level(struct device_driver *d, const char *buf, static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO, show_debug_level, store_debug_level); +static inline u32 ipw_get_event_log_len(struct ipw_priv *priv) +{ + return ipw_read_reg32(priv, ipw_read32(priv, IPW_EVENT_LOG)); +} + +static void ipw_capture_event_log(struct ipw_priv *priv, + u32 log_len, struct ipw_event *log) +{ + u32 base; + + if (log_len) { + base = ipw_read32(priv, IPW_EVENT_LOG); + ipw_read_indirect(priv, base + sizeof(base) + sizeof(u32), + (u8 *) log, sizeof(*log) * log_len); + } +} + +static struct ipw_fw_error *ipw_alloc_error_log(struct ipw_priv *priv) +{ + struct ipw_fw_error *error; + u32 log_len = ipw_get_event_log_len(priv); + u32 base = ipw_read32(priv, IPW_ERROR_LOG); + u32 elem_len = ipw_read_reg32(priv, base); + + error = kmalloc(sizeof(*error) + + sizeof(*error->elem) * elem_len + + sizeof(*error->log) * log_len, GFP_ATOMIC); + if (!error) { + IPW_ERROR("Memory allocation for firmware error log " + "failed.\n"); + return NULL; + } + error->status = priv->status; + error->config = priv->config; + error->elem_len = elem_len; + error->log_len = log_len; + error->elem = (struct ipw_error_elem *)error->payload; + error->log = (struct ipw_event *)(error->elem + + (sizeof(*error->elem) * elem_len)); + + ipw_capture_event_log(priv, log_len, error->log); + + if (elem_len) + ipw_read_indirect(priv, base + sizeof(base), (u8 *) error->elem, + sizeof(*error->elem) * elem_len); + + return error; +} + +static void ipw_free_error_log(struct ipw_fw_error *error) +{ + if (error) + kfree(error); +} + +static ssize_t show_event_log(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct ipw_priv *priv = dev_get_drvdata(d); + u32 log_len = ipw_get_event_log_len(priv); + struct ipw_event log[log_len]; + u32 len = 0, i; + + ipw_capture_event_log(priv, log_len, log); + + len += snprintf(buf + len, PAGE_SIZE - len, "%08X", log_len); + for (i = 0; i < log_len; i++) + len += snprintf(buf + len, PAGE_SIZE - len, + "\n%08X%08X%08X", + log[i].time, log[i].event, log[i].data); + len += snprintf(buf + len, PAGE_SIZE - len, "\n"); + return len; +} + +static DEVICE_ATTR(event_log, S_IRUGO, show_event_log, NULL); + +static ssize_t show_error(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct ipw_priv *priv = dev_get_drvdata(d); + u32 len = 0, i; + if (!priv->error) + return 0; + len += snprintf(buf + len, PAGE_SIZE - len, + "%08X%08X%08X", + priv->error->status, + priv->error->config, priv->error->elem_len); + for (i = 0; i < priv->error->elem_len; i++) + len += snprintf(buf + len, PAGE_SIZE - len, + "\n%08X%08X%08X%08X%08X%08X%08X", + priv->error->elem[i].time, + priv->error->elem[i].desc, + priv->error->elem[i].blink1, + priv->error->elem[i].blink2, + priv->error->elem[i].link1, + priv->error->elem[i].link2, + priv->error->elem[i].data); + + len += snprintf(buf + len, PAGE_SIZE - len, + "\n%08X", priv->error->log_len); + for (i = 0; i < priv->error->log_len; i++) + len += snprintf(buf + len, PAGE_SIZE - len, + "\n%08X%08X%08X", + priv->error->log[i].time, + priv->error->log[i].event, + priv->error->log[i].data); + len += snprintf(buf + len, PAGE_SIZE - len, "\n"); + return len; +} + +static ssize_t clear_error(struct device *d, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct ipw_priv *priv = dev_get_drvdata(d); + if (priv->error) { + ipw_free_error_log(priv->error); + priv->error = NULL; + } + return count; +} + +static DEVICE_ATTR(error, S_IRUGO | S_IWUSR, show_error, clear_error); + static ssize_t show_scan_age(struct device *d, struct device_attribute *attr, char *buf) { @@ -1163,34 +1267,6 @@ static ssize_t show_nic_type(struct device *d, static DEVICE_ATTR(nic_type, S_IRUGO, show_nic_type, NULL); -static ssize_t dump_error_log(struct device *d, - struct device_attribute *attr, const char *buf, - size_t count) -{ - char *p = (char *)buf; - - if (p[0] == '1') - ipw_dump_nic_error_log((struct ipw_priv *)d->driver_data); - - return strnlen(buf, count); -} - -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) -{ - char *p = (char *)buf; - - if (p[0] == '1') - ipw_dump_nic_event_log((struct ipw_priv *)d->driver_data); - - return strnlen(buf, count); -} - -static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log); - static ssize_t show_ucode_version(struct device *d, struct device_attribute *attr, char *buf) { @@ -1614,12 +1690,30 @@ static void ipw_irq_tasklet(struct ipw_priv *priv) if (inta & IPW_INTA_BIT_FATAL_ERROR) { IPW_ERROR("Firmware error detected. Restarting.\n"); + if (priv->error) { + IPW_ERROR("Sysfs 'error' log already exists.\n"); #ifdef CONFIG_IPW_DEBUG - if (ipw_debug_level & IPW_DL_FW_ERRORS) { - ipw_dump_nic_error_log(priv); - ipw_dump_nic_event_log(priv); - } + if (ipw_debug_level & IPW_DL_FW_ERRORS) { + struct ipw_fw_error *error = + ipw_alloc_error_log(priv); + ipw_dump_error_log(priv, error); + if (error) + ipw_free_error_log(error); + } +#endif + } else { + priv->error = ipw_alloc_error_log(priv); + if (priv->error) + IPW_ERROR("Sysfs 'error' log captured.\n"); + else + IPW_ERROR("Error allocating sysfs 'error' " + "log.\n"); +#ifdef CONFIG_IPW_DEBUG + if (ipw_debug_level & IPW_DL_FW_ERRORS) + ipw_dump_error_log(priv, priv->error); #endif + } + /* XXX: If hardware encryption is for WPA/WPA2, * we have to notify the supplicant. */ if (priv->ieee->sec.encrypt) { @@ -10958,8 +11052,8 @@ static struct attribute *ipw_sysfs_entries[] = { &dev_attr_nic_type.attr, &dev_attr_status.attr, &dev_attr_cfg.attr, - &dev_attr_dump_errors.attr, - &dev_attr_dump_events.attr, + &dev_attr_error.attr, + &dev_attr_event_log.attr, &dev_attr_eeprom_delay.attr, &dev_attr_ucode_version.attr, &dev_attr_rtc.attr, @@ -11172,6 +11266,11 @@ static void ipw_pci_remove(struct pci_dev *pdev) } } + if (priv->error) { + ipw_free_error_log(priv->error); + priv->error = NULL; + } + free_irq(pdev->irq, priv); iounmap(priv->hw_base); pci_release_regions(pdev); |