/*
- Copyright (C) 2004 - 2007 rt2x00 SourceForge Project
+ Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
<http://rt2x00.serialmonkey.com>
This program is free software; you can redistribute it and/or modify
Abstract: rt2x00 debugfs specific routines.
*/
-/*
- * Set enviroment defines for rt2x00.h
- */
-#define DRV_NAME "rt2x00lib"
-
#include <linux/debugfs.h>
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/poll.h>
#include <linux/uaccess.h>
#include "rt2x00.h"
#include "rt2x00lib.h"
+#include "rt2x00dump.h"
-#define PRINT_LINE_LEN_MAX 32
+#define MAX_LINE_LENGTH 64
struct rt2x00debug_intf {
/*
/*
* Debugfs entries for:
* - driver folder
- * - driver file
- * - chipset file
- * - device flags file
- * - register offset/value files
- * - eeprom offset/value files
- * - bbp offset/value files
- * - rf offset/value files
+ * - driver file
+ * - chipset file
+ * - device flags file
+ * - register folder
+ * - csr offset/value files
+ * - eeprom offset/value files
+ * - bbp offset/value files
+ * - rf offset/value files
+ * - queue folder
+ * - frame dump file
+ * - queue stats file
*/
struct dentry *driver_folder;
struct dentry *driver_entry;
struct dentry *chipset_entry;
struct dentry *dev_flags;
+ struct dentry *register_folder;
struct dentry *csr_off_entry;
struct dentry *csr_val_entry;
struct dentry *eeprom_off_entry;
struct dentry *bbp_val_entry;
struct dentry *rf_off_entry;
struct dentry *rf_val_entry;
+ struct dentry *queue_folder;
+ struct dentry *queue_frame_dump_entry;
+ struct dentry *queue_stats_entry;
+
+ /*
+ * The frame dump file only allows a single reader,
+ * so we need to store the current state here.
+ */
+ unsigned long frame_dump_flags;
+#define FRAME_DUMP_FILE_OPEN 1
+
+ /*
+ * We queue each frame before dumping it to the user,
+ * per read command we will pass a single skb structure
+ * so we should be prepared to queue multiple sk buffers
+ * before sending it to userspace.
+ */
+ struct sk_buff_head frame_dump_skbqueue;
+ wait_queue_head_t frame_dump_waitqueue;
/*
* Driver and chipset files will use a data buffer
unsigned int offset_rf;
};
+void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
+ enum rt2x00_dump_type type, struct sk_buff *skb)
+{
+ struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
+ struct skb_frame_desc *desc = get_skb_frame_desc(skb);
+ struct sk_buff *skbcopy;
+ struct rt2x00dump_hdr *dump_hdr;
+ struct timeval timestamp;
+
+ do_gettimeofday(×tamp);
+
+ if (!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags))
+ return;
+
+ if (skb_queue_len(&intf->frame_dump_skbqueue) > 20) {
+ DEBUG(rt2x00dev, "txrx dump queue length exceeded.\n");
+ return;
+ }
+
+ skbcopy = alloc_skb(sizeof(*dump_hdr) + desc->desc_len + desc->data_len,
+ GFP_ATOMIC);
+ if (!skbcopy) {
+ DEBUG(rt2x00dev, "Failed to copy skb for dump.\n");
+ return;
+ }
+
+ dump_hdr = (struct rt2x00dump_hdr *)skb_put(skbcopy, sizeof(*dump_hdr));
+ dump_hdr->version = cpu_to_le32(DUMP_HEADER_VERSION);
+ dump_hdr->header_length = cpu_to_le32(sizeof(*dump_hdr));
+ dump_hdr->desc_length = cpu_to_le32(desc->desc_len);
+ dump_hdr->data_length = cpu_to_le32(desc->data_len);
+ dump_hdr->chip_rt = cpu_to_le16(rt2x00dev->chip.rt);
+ dump_hdr->chip_rf = cpu_to_le16(rt2x00dev->chip.rf);
+ dump_hdr->chip_rev = cpu_to_le32(rt2x00dev->chip.rev);
+ dump_hdr->type = cpu_to_le16(type);
+ dump_hdr->queue_index = desc->entry->queue->qid;
+ dump_hdr->entry_index = desc->entry->entry_idx;
+ dump_hdr->timestamp_sec = cpu_to_le32(timestamp.tv_sec);
+ dump_hdr->timestamp_usec = cpu_to_le32(timestamp.tv_usec);
+
+ memcpy(skb_put(skbcopy, desc->desc_len), desc->desc, desc->desc_len);
+ memcpy(skb_put(skbcopy, desc->data_len), desc->data, desc->data_len);
+
+ skb_queue_tail(&intf->frame_dump_skbqueue, skbcopy);
+ wake_up_interruptible(&intf->frame_dump_waitqueue);
+
+ /*
+ * Verify that the file has not been closed while we were working.
+ */
+ if (!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags))
+ skb_queue_purge(&intf->frame_dump_skbqueue);
+}
+
static int rt2x00debug_file_open(struct inode *inode, struct file *file)
{
struct rt2x00debug_intf *intf = inode->i_private;
return 0;
}
+static int rt2x00debug_open_queue_dump(struct inode *inode, struct file *file)
+{
+ struct rt2x00debug_intf *intf = inode->i_private;
+ int retval;
+
+ retval = rt2x00debug_file_open(inode, file);
+ if (retval)
+ return retval;
+
+ if (test_and_set_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)) {
+ rt2x00debug_file_release(inode, file);
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+static int rt2x00debug_release_queue_dump(struct inode *inode, struct file *file)
+{
+ struct rt2x00debug_intf *intf = inode->i_private;
+
+ skb_queue_purge(&intf->frame_dump_skbqueue);
+
+ clear_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags);
+
+ return rt2x00debug_file_release(inode, file);
+}
+
+static ssize_t rt2x00debug_read_queue_dump(struct file *file,
+ char __user *buf,
+ size_t length,
+ loff_t *offset)
+{
+ struct rt2x00debug_intf *intf = file->private_data;
+ struct sk_buff *skb;
+ size_t status;
+ int retval;
+
+ if (file->f_flags & O_NONBLOCK)
+ return -EAGAIN;
+
+ retval =
+ wait_event_interruptible(intf->frame_dump_waitqueue,
+ (skb =
+ skb_dequeue(&intf->frame_dump_skbqueue)));
+ if (retval)
+ return retval;
+
+ status = min((size_t)skb->len, length);
+ if (copy_to_user(buf, skb->data, status)) {
+ status = -EFAULT;
+ goto exit;
+ }
+
+ *offset += status;
+
+exit:
+ kfree_skb(skb);
+
+ return status;
+}
+
+static unsigned int rt2x00debug_poll_queue_dump(struct file *file,
+ poll_table *wait)
+{
+ struct rt2x00debug_intf *intf = file->private_data;
+
+ poll_wait(file, &intf->frame_dump_waitqueue, wait);
+
+ if (!skb_queue_empty(&intf->frame_dump_skbqueue))
+ return POLLOUT | POLLWRNORM;
+
+ return 0;
+}
+
+static const struct file_operations rt2x00debug_fop_queue_dump = {
+ .owner = THIS_MODULE,
+ .read = rt2x00debug_read_queue_dump,
+ .poll = rt2x00debug_poll_queue_dump,
+ .open = rt2x00debug_open_queue_dump,
+ .release = rt2x00debug_release_queue_dump,
+};
+
+static ssize_t rt2x00debug_read_queue_stats(struct file *file,
+ char __user *buf,
+ size_t length,
+ loff_t *offset)
+{
+ struct rt2x00debug_intf *intf = file->private_data;
+ struct data_queue *queue;
+ unsigned long irqflags;
+ unsigned int lines = 1 + intf->rt2x00dev->data_queues;
+ size_t size;
+ char *data;
+ char *temp;
+
+ if (*offset)
+ return 0;
+
+ data = kzalloc(lines * MAX_LINE_LENGTH, GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ temp = data +
+ sprintf(data, "qid\tcount\tlimit\tlength\tindex\tdone\tcrypto\n");
+
+ queue_for_each(intf->rt2x00dev, queue) {
+ spin_lock_irqsave(&queue->lock, irqflags);
+
+ temp += sprintf(temp, "%d\t%d\t%d\t%d\t%d\t%d\t%d\n", queue->qid,
+ queue->count, queue->limit, queue->length,
+ queue->index[Q_INDEX],
+ queue->index[Q_INDEX_DONE],
+ queue->index[Q_INDEX_CRYPTO]);
+
+ spin_unlock_irqrestore(&queue->lock, irqflags);
+ }
+
+ size = strlen(data);
+ size = min(size, length);
+
+ if (copy_to_user(buf, data, size)) {
+ kfree(data);
+ return -EFAULT;
+ }
+
+ kfree(data);
+
+ *offset += size;
+ return size;
+}
+
+static const struct file_operations rt2x00debug_fop_queue_stats = {
+ .owner = THIS_MODULE,
+ .read = rt2x00debug_read_queue_stats,
+ .open = rt2x00debug_file_open,
+ .release = rt2x00debug_file_release,
+};
+
#define RT2X00DEBUGFS_OPS_READ(__name, __format, __type) \
static ssize_t rt2x00debug_read_##__name(struct file *file, \
char __user *buf, \
size_t length, \
loff_t *offset) \
{ \
- struct rt2x00debug_intf *intf = file->private_data; \
+ struct rt2x00debug_intf *intf = file->private_data; \
const struct rt2x00debug *debug = intf->debug; \
char line[16]; \
size_t size; \
size_t length, \
loff_t *offset) \
{ \
- struct rt2x00debug_intf *intf = file->private_data; \
+ struct rt2x00debug_intf *intf = file->private_data; \
const struct rt2x00debug *debug = intf->debug; \
char line[16]; \
size_t size; \
{
char *data;
- data = kzalloc(3 * PRINT_LINE_LEN_MAX, GFP_KERNEL);
+ data = kzalloc(3 * MAX_LINE_LENGTH, GFP_KERNEL);
if (!data)
return NULL;
const struct rt2x00debug *debug = intf->debug;
char *data;
- data = kzalloc(4 * PRINT_LINE_LEN_MAX, GFP_KERNEL);
+ data = kzalloc(8 * MAX_LINE_LENGTH, GFP_KERNEL);
if (!data)
return NULL;
blob->data = data;
+ data += sprintf(data, "rt chip: %04x\n", intf->rt2x00dev->chip.rt);
+ data += sprintf(data, "rf chip: %04x\n", intf->rt2x00dev->chip.rf);
+ data += sprintf(data, "revision:%08x\n", intf->rt2x00dev->chip.rev);
+ data += sprintf(data, "\n");
data += sprintf(data, "csr length: %d\n", debug->csr.word_count);
data += sprintf(data, "eeprom length: %d\n", debug->eeprom.word_count);
data += sprintf(data, "bbp length: %d\n", debug->bbp.word_count);
if (IS_ERR(intf->dev_flags))
goto exit;
-#define RT2X00DEBUGFS_CREATE_ENTRY(__intf, __name) \
+ intf->register_folder =
+ debugfs_create_dir("register", intf->driver_folder);
+ if (IS_ERR(intf->register_folder))
+ goto exit;
+
+#define RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(__intf, __name) \
({ \
(__intf)->__name##_off_entry = \
debugfs_create_u32(__stringify(__name) "_offset", \
S_IRUGO | S_IWUSR, \
- (__intf)->driver_folder, \
+ (__intf)->register_folder, \
&(__intf)->offset_##__name); \
if (IS_ERR((__intf)->__name##_off_entry)) \
goto exit; \
(__intf)->__name##_val_entry = \
debugfs_create_file(__stringify(__name) "_value", \
S_IRUGO | S_IWUSR, \
- (__intf)->driver_folder, \
+ (__intf)->register_folder, \
(__intf), &rt2x00debug_fop_##__name);\
if (IS_ERR((__intf)->__name##_val_entry)) \
goto exit; \
})
- RT2X00DEBUGFS_CREATE_ENTRY(intf, csr);
- RT2X00DEBUGFS_CREATE_ENTRY(intf, eeprom);
- RT2X00DEBUGFS_CREATE_ENTRY(intf, bbp);
- RT2X00DEBUGFS_CREATE_ENTRY(intf, rf);
+ RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, csr);
+ RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, eeprom);
+ RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, bbp);
+ RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, rf);
+
+#undef RT2X00DEBUGFS_CREATE_REGISTER_ENTRY
-#undef RT2X00DEBUGFS_CREATE_ENTRY
+ intf->queue_folder =
+ debugfs_create_dir("queue", intf->driver_folder);
+ if (IS_ERR(intf->queue_folder))
+ goto exit;
+
+ intf->queue_frame_dump_entry =
+ debugfs_create_file("dump", S_IRUGO, intf->queue_folder,
+ intf, &rt2x00debug_fop_queue_dump);
+ if (IS_ERR(intf->queue_frame_dump_entry))
+ goto exit;
+
+ skb_queue_head_init(&intf->frame_dump_skbqueue);
+ init_waitqueue_head(&intf->frame_dump_waitqueue);
+
+ intf->queue_stats_entry =
+ debugfs_create_file("queue", S_IRUGO, intf->queue_folder,
+ intf, &rt2x00debug_fop_queue_stats);
return;
void rt2x00debug_deregister(struct rt2x00_dev *rt2x00dev)
{
- const struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
+ struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
if (unlikely(!intf))
return;
+ skb_queue_purge(&intf->frame_dump_skbqueue);
+
+ debugfs_remove(intf->queue_stats_entry);
+ debugfs_remove(intf->queue_frame_dump_entry);
+ debugfs_remove(intf->queue_folder);
debugfs_remove(intf->rf_val_entry);
debugfs_remove(intf->rf_off_entry);
debugfs_remove(intf->bbp_val_entry);
debugfs_remove(intf->eeprom_off_entry);
debugfs_remove(intf->csr_val_entry);
debugfs_remove(intf->csr_off_entry);
+ debugfs_remove(intf->register_folder);
debugfs_remove(intf->dev_flags);
debugfs_remove(intf->chipset_entry);
debugfs_remove(intf->driver_entry);
projects / linux-2.6 / blobdiff