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-rw-r--r--drivers/net/wireless/ipw2200.c251
-rw-r--r--drivers/net/wireless/ipw2200.h30
2 files changed, 204 insertions, 77 deletions
diff --git a/drivers/net/wireless/ipw2200.c b/drivers/net/wireless/ipw2200.c
index 6e862c2..a3283ca 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);
diff --git a/drivers/net/wireless/ipw2200.h b/drivers/net/wireless/ipw2200.h
index 9bf8aa4..9bf03ac 100644
--- a/drivers/net/wireless/ipw2200.h
+++ b/drivers/net/wireless/ipw2200.h
@@ -1085,6 +1085,32 @@ struct ipw_ibss_seq {
struct list_head list;
};
+struct ipw_error_elem {
+ u32 desc;
+ u32 time;
+ u32 blink1;
+ u32 blink2;
+ u32 link1;
+ u32 link2;
+ u32 data;
+};
+
+struct ipw_event {
+ u32 event;
+ u32 time;
+ u32 data;
+} __attribute__ ((packed));
+
+struct ipw_fw_error {
+ u32 status;
+ u32 config;
+ u32 elem_len;
+ u32 log_len;
+ struct ipw_error_elem *elem;
+ struct ipw_event *log;
+ u8 payload[0];
+} __attribute__ ((packed));
+
struct ipw_priv {
/* ieee device used by generic ieee processing code */
struct ieee80211_device *ieee;
@@ -1245,6 +1271,8 @@ struct ipw_priv {
u32 pm_state[16];
#endif
+ struct ipw_fw_error *error;
+
/* network state */
/* Used to pass the current INTA value from ISR to Tasklet */
@@ -1803,7 +1831,7 @@ enum {
IPW_ORD_TABLE_7_LAST
};
-#define IPWSTATUS_ERROR_LOG (IPW_SHARED_LOWER_BOUND + 0x410)
+#define IPW_ERROR_LOG (IPW_SHARED_LOWER_BOUND + 0x410)
#define IPW_EVENT_LOG (IPW_SHARED_LOWER_BOUND + 0x414)
#define IPW_ORDINALS_TABLE_LOWER (IPW_SHARED_LOWER_BOUND + 0x500)
#define IPW_ORDINALS_TABLE_0 (IPW_SHARED_LOWER_BOUND + 0x180)
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