Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0-or-later
/*
<------>Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
<------><http://rt2x00.serialmonkey.com>
 
 */
 
/*
<------>Module: rt2x00lib
<------>Abstract: rt2x00 debugfs specific routines.
 */
 
#include <linux/debugfs.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/poll.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
 
#include "rt2x00.h"
#include "rt2x00lib.h"
#include "rt2x00dump.h"
 
#define MAX_LINE_LENGTH 64
 
struct rt2x00debug_crypto {
<------>unsigned long success;
<------>unsigned long icv_error;
<------>unsigned long mic_error;
<------>unsigned long key_error;
};
 
struct rt2x00debug_intf {
<------>/*
<------> * Pointer to driver structure where
<------> * this debugfs entry belongs to.
<------> */
<------>struct rt2x00_dev *rt2x00dev;
 
<------>/*
<------> * Reference to the rt2x00debug structure
<------> * which can be used to communicate with
<------> * the registers.
<------> */
<------>const struct rt2x00debug *debug;
 
<------>/*
<------> * Debugfs entries for:
<------> * - driver folder
<------> *   - driver file
<------> *   - chipset file
<------> *   - device state flags file
<------> *   - device capability flags file
<------> *   - hardware restart file
<------> *   - register folder
<------> *     - csr offset/value files
<------> *     - eeprom offset/value files
<------> *     - bbp offset/value files
<------> *     - rf offset/value files
<------> *     - rfcsr offset/value files
<------> *   - queue folder
<------> *     - frame dump file
<------> *     - queue stats file
<------> *     - crypto stats file
<------> */
<------>struct dentry *driver_folder;
 
<------>/*
<------> * 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;
 
<------>/*
<------> * HW crypto statistics.
<------> * All statistics are stored separately per cipher type.
<------> */
<------>struct rt2x00debug_crypto crypto_stats[CIPHER_MAX];
 
<------>/*
<------> * Driver and chipset files will use a data buffer
<------> * that has been created in advance. This will simplify
<------> * the code since we can use the debugfs functions.
<------> */
<------>struct debugfs_blob_wrapper driver_blob;
<------>struct debugfs_blob_wrapper chipset_blob;
 
<------>/*
<------> * Requested offset for each register type.
<------> */
<------>unsigned int offset_csr;
<------>unsigned int offset_eeprom;
<------>unsigned int offset_bbp;
<------>unsigned int offset_rf;
<------>unsigned int offset_rfcsr;
};
 
void rt2x00debug_update_crypto(struct rt2x00_dev *rt2x00dev,
<------><------><------>       struct rxdone_entry_desc *rxdesc)
{
<------>struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
<------>enum cipher cipher = rxdesc->cipher;
<------>enum rx_crypto status = rxdesc->cipher_status;
 
<------>if (cipher == CIPHER_TKIP_NO_MIC)
<------><------>cipher = CIPHER_TKIP;
<------>if (cipher == CIPHER_NONE || cipher >= CIPHER_MAX)
<------><------>return;
 
<------>/* Remove CIPHER_NONE index */
<------>cipher--;
 
<------>intf->crypto_stats[cipher].success += (status == RX_CRYPTO_SUCCESS);
<------>intf->crypto_stats[cipher].icv_error += (status == RX_CRYPTO_FAIL_ICV);
<------>intf->crypto_stats[cipher].mic_error += (status == RX_CRYPTO_FAIL_MIC);
<------>intf->crypto_stats[cipher].key_error += (status == RX_CRYPTO_FAIL_KEY);
}
 
void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
<------><------><------>    enum rt2x00_dump_type type, struct queue_entry *entry)
{
<------>struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
<------>struct sk_buff *skb = entry->skb;
<------>struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
<------>struct sk_buff *skbcopy;
<------>struct rt2x00dump_hdr *dump_hdr;
<------>struct timespec64 timestamp;
<------>u32 data_len;
 
<------>if (likely(!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)))
<------><------>return;
 
<------>ktime_get_ts64(&timestamp);
 
<------>if (skb_queue_len(&intf->frame_dump_skbqueue) > 20) {
<------><------>rt2x00_dbg(rt2x00dev, "txrx dump queue length exceeded\n");
<------><------>return;
<------>}
 
<------>data_len = skb->len;
<------>if (skbdesc->flags & SKBDESC_DESC_IN_SKB)
<------><------>data_len -= skbdesc->desc_len;
 
<------>skbcopy = alloc_skb(sizeof(*dump_hdr) + skbdesc->desc_len + data_len,
<------><------><------>    GFP_ATOMIC);
<------>if (!skbcopy) {
<------><------>rt2x00_dbg(rt2x00dev, "Failed to copy skb for dump\n");
<------><------>return;
<------>}
 
<------>dump_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(skbdesc->desc_len);
<------>dump_hdr->data_length = cpu_to_le32(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_le16(rt2x00dev->chip.rev);
<------>dump_hdr->type = cpu_to_le16(type);
<------>dump_hdr->queue_index = entry->queue->qid;
<------>dump_hdr->entry_index = entry->entry_idx;
<------>dump_hdr->timestamp_sec = cpu_to_le32(timestamp.tv_sec);
<------>dump_hdr->timestamp_usec = cpu_to_le32(timestamp.tv_nsec /
<------><------><------><------><------>       NSEC_PER_USEC);
 
<------>if (!(skbdesc->flags & SKBDESC_DESC_IN_SKB))
<------><------>skb_put_data(skbcopy, skbdesc->desc, skbdesc->desc_len);
<------>skb_put_data(skbcopy, skb->data, skb->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);
}
EXPORT_SYMBOL_GPL(rt2x00debug_dump_frame);
 
static int rt2x00debug_file_open(struct inode *inode, struct file *file)
{
<------>struct rt2x00debug_intf *intf = inode->i_private;
 
<------>file->private_data = inode->i_private;
 
<------>if (!try_module_get(intf->debug->owner))
<------><------>return -EBUSY;
 
<------>return 0;
}
 
static int rt2x00debug_file_release(struct inode *inode, struct file *file)
{
<------>struct rt2x00debug_intf *intf = file->private_data;
 
<------>module_put(intf->debug->owner);
 
<------>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_t(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 __poll_t 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 EPOLLOUT | EPOLLWRNORM;
 
<------>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,
<------>.llseek		= default_llseek,
};
 
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 = kcalloc(lines, MAX_LINE_LENGTH, GFP_KERNEL);
<------>if (!data)
<------><------>return -ENOMEM;
 
<------>temp = data +
<------>    sprintf(data, "qid\tflags\t\tcount\tlimit\tlength\tindex\tdma done\tdone\n");
 
<------>queue_for_each(intf->rt2x00dev, queue) {
<------><------>spin_lock_irqsave(&queue->index_lock, irqflags);
 
<------><------>temp += sprintf(temp, "%d\t0x%.8x\t%d\t%d\t%d\t%d\t%d\t\t%d\n",
<------><------><------><------>queue->qid, (unsigned int)queue->flags,
<------><------><------><------>queue->count, queue->limit, queue->length,
<------><------><------><------>queue->index[Q_INDEX],
<------><------><------><------>queue->index[Q_INDEX_DMA_DONE],
<------><------><------><------>queue->index[Q_INDEX_DONE]);
 
<------><------>spin_unlock_irqrestore(&queue->index_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,
<------>.llseek		= default_llseek,
};
 
#ifdef CONFIG_RT2X00_LIB_CRYPTO
static ssize_t rt2x00debug_read_crypto_stats(struct file *file,
<------><------><------><------><------>     char __user *buf,
<------><------><------><------><------>     size_t length,
<------><------><------><------><------>     loff_t *offset)
{
<------>struct rt2x00debug_intf *intf = file->private_data;
<------>static const char * const name[] = { "WEP64", "WEP128", "TKIP", "AES" };
<------>char *data;
<------>char *temp;
<------>size_t size;
<------>unsigned int i;
 
<------>if (*offset)
<------><------>return 0;
 
<------>data = kcalloc(1 + CIPHER_MAX, MAX_LINE_LENGTH, GFP_KERNEL);
<------>if (!data)
<------><------>return -ENOMEM;
 
<------>temp = data;
<------>temp += sprintf(data, "cipher\tsuccess\ticv err\tmic err\tkey err\n");
 
<------>for (i = 0; i < CIPHER_MAX; i++) {
<------><------>temp += sprintf(temp, "%s\t%lu\t%lu\t%lu\t%lu\n", name[i],
<------><------><------><------>intf->crypto_stats[i].success,
<------><------><------><------>intf->crypto_stats[i].icv_error,
<------><------><------><------>intf->crypto_stats[i].mic_error,
<------><------><------><------>intf->crypto_stats[i].key_error);
<------>}
 
<------>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_crypto_stats = {
<------>.owner		= THIS_MODULE,
<------>.read		= rt2x00debug_read_crypto_stats,
<------>.open		= rt2x00debug_file_open,
<------>.release	= rt2x00debug_file_release,
<------>.llseek		= default_llseek,
};
#endif
 
#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;	\
<------>const struct rt2x00debug *debug = intf->debug;		\
<------>char line[16];						\
<------>size_t size;						\
<------>unsigned int index = intf->offset_##__name;		\
<------>__type value;						\
<------><------><------><------><------><------><------><------>\
<------>if (*offset)						\
<------><------>return 0;					\
<------><------><------><------><------><------><------><------>\
<------>if (index >= debug->__name.word_count)			\
<------><------>return -EINVAL;					\
<------><------><------><------><------><------><------><------>\
<------>index += (debug->__name.word_base /			\
<------><------>  debug->__name.word_size);			\
<------><------><------><------><------><------><------><------>\
<------>if (debug->__name.flags & RT2X00DEBUGFS_OFFSET)		\
<------><------>index *= debug->__name.word_size;		\
<------><------><------><------><------><------><------><------>\
<------>value = debug->__name.read(intf->rt2x00dev, index);	\
<------><------><------><------><------><------><------><------>\
<------>size = sprintf(line, __format, value);			\
<------><------><------><------><------><------><------><------>\
<------>return simple_read_from_buffer(buf, length, offset, line, size); \
}
 
#define RT2X00DEBUGFS_OPS_WRITE(__name, __type)			\
static ssize_t rt2x00debug_write_##__name(struct file *file,	\
<------><------><------><------><------>  const char __user *buf,\
<------><------><------><------><------>  size_t length,	\
<------><------><------><------><------>  loff_t *offset)	\
{								\
<------>struct rt2x00debug_intf *intf = file->private_data;	\
<------>const struct rt2x00debug *debug = intf->debug;		\
<------>char line[17];						\
<------>size_t size;						\
<------>unsigned int index = intf->offset_##__name;		\
<------>__type value;						\
<------><------><------><------><------><------><------><------>\
<------>if (*offset)						\
<------><------>return 0;					\
<------><------><------><------><------><------><------><------>\
<------>if (index >= debug->__name.word_count)			\
<------><------>return -EINVAL;					\
<------><------><------><------><------><------><------><------>\
<------>if (length > sizeof(line))				\
<------><------>return -EINVAL;					\
<------><------><------><------><------><------><------><------>\
<------>if (copy_from_user(line, buf, length))			\
<------><------>return -EFAULT;					\
<------>line[16] = 0;						\
<------><------><------><------><------><------>\
<------>size = strlen(line);					\
<------>value = simple_strtoul(line, NULL, 0);			\
<------><------><------><------><------><------><------><------>\
<------>index += (debug->__name.word_base /			\
<------><------>  debug->__name.word_size);			\
<------><------><------><------><------><------><------><------>\
<------>if (debug->__name.flags & RT2X00DEBUGFS_OFFSET)		\
<------><------>index *= debug->__name.word_size;		\
<------><------><------><------><------><------><------><------>\
<------>debug->__name.write(intf->rt2x00dev, index, value);	\
<------><------><------><------><------><------><------><------>\
<------>*offset += size;					\
<------>return size;						\
}
 
#define RT2X00DEBUGFS_OPS(__name, __format, __type)		\
RT2X00DEBUGFS_OPS_READ(__name, __format, __type);		\
RT2X00DEBUGFS_OPS_WRITE(__name, __type);			\
<------><------><------><------><------><------><------><------>\
static const struct file_operations rt2x00debug_fop_##__name = {\
<------>.owner		= THIS_MODULE,				\
<------>.read		= rt2x00debug_read_##__name,		\
<------>.write		= rt2x00debug_write_##__name,		\
<------>.open		= rt2x00debug_file_open,		\
<------>.release	= rt2x00debug_file_release,		\
<------>.llseek		= generic_file_llseek,			\
};
 
RT2X00DEBUGFS_OPS(csr, "0x%.8x\n", u32);
RT2X00DEBUGFS_OPS(eeprom, "0x%.4x\n", u16);
RT2X00DEBUGFS_OPS(bbp, "0x%.2x\n", u8);
RT2X00DEBUGFS_OPS(rf, "0x%.8x\n", u32);
RT2X00DEBUGFS_OPS(rfcsr, "0x%.2x\n", u8);
 
static ssize_t rt2x00debug_read_dev_flags(struct file *file,
<------><------><------><------><------>  char __user *buf,
<------><------><------><------><------>  size_t length,
<------><------><------><------><------>  loff_t *offset)
{
<------>struct rt2x00debug_intf *intf =	file->private_data;
<------>char line[16];
<------>size_t size;
 
<------>if (*offset)
<------><------>return 0;
 
<------>size = sprintf(line, "0x%.8x\n", (unsigned int)intf->rt2x00dev->flags);
 
<------>return simple_read_from_buffer(buf, length, offset, line, size);
}
 
static const struct file_operations rt2x00debug_fop_dev_flags = {
<------>.owner		= THIS_MODULE,
<------>.read		= rt2x00debug_read_dev_flags,
<------>.open		= rt2x00debug_file_open,
<------>.release	= rt2x00debug_file_release,
<------>.llseek		= default_llseek,
};
 
static ssize_t rt2x00debug_read_cap_flags(struct file *file,
<------><------><------><------><------>  char __user *buf,
<------><------><------><------><------>  size_t length,
<------><------><------><------><------>  loff_t *offset)
{
<------>struct rt2x00debug_intf *intf =	file->private_data;
<------>char line[16];
<------>size_t size;
 
<------>if (*offset)
<------><------>return 0;
 
<------>size = sprintf(line, "0x%.8x\n", (unsigned int)intf->rt2x00dev->cap_flags);
 
<------>return simple_read_from_buffer(buf, length, offset, line, size);
}
 
static const struct file_operations rt2x00debug_fop_cap_flags = {
<------>.owner		= THIS_MODULE,
<------>.read		= rt2x00debug_read_cap_flags,
<------>.open		= rt2x00debug_file_open,
<------>.release	= rt2x00debug_file_release,
<------>.llseek		= default_llseek,
};
 
static ssize_t rt2x00debug_write_restart_hw(struct file *file,
<------><------><------><------><------>    const char __user *buf,
<------><------><------><------><------>    size_t length,
<------><------><------><------><------>    loff_t *offset)
{
<------>struct rt2x00debug_intf *intf =	file->private_data;
<------>struct rt2x00_dev *rt2x00dev = intf->rt2x00dev;
<------>static unsigned long last_reset = INITIAL_JIFFIES;
 
<------>if (!rt2x00_has_cap_restart_hw(rt2x00dev))
<------><------>return -EOPNOTSUPP;
 
<------>if (time_before(jiffies, last_reset + msecs_to_jiffies(2000)))
<------><------>return -EBUSY;
 
<------>last_reset = jiffies;
 
<------>ieee80211_restart_hw(rt2x00dev->hw);
<------>return length;
}
 
static const struct file_operations rt2x00debug_restart_hw = {
<------>.owner = THIS_MODULE,
<------>.write = rt2x00debug_write_restart_hw,
<------>.open = simple_open,
<------>.llseek = generic_file_llseek,
};
 
static void rt2x00debug_create_file_driver(const char *name,
<------><------><------><------><------>   struct rt2x00debug_intf *intf,
<------><------><------><------><------>   struct debugfs_blob_wrapper *blob)
{
<------>char *data;
 
<------>data = kzalloc(3 * MAX_LINE_LENGTH, GFP_KERNEL);
<------>if (!data)
<------><------>return;
 
<------>blob->data = data;
<------>data += sprintf(data, "driver:\t%s\n", intf->rt2x00dev->ops->name);
<------>data += sprintf(data, "version:\t%s\n", DRV_VERSION);
<------>blob->size = strlen(blob->data);
 
<------>debugfs_create_blob(name, 0400, intf->driver_folder, blob);
}
 
static void rt2x00debug_create_file_chipset(const char *name,
<------><------><------><------><------>    struct rt2x00debug_intf *intf,
<------><------><------><------><------>    struct debugfs_blob_wrapper *blob)
{
<------>const struct rt2x00debug *debug = intf->debug;
<------>char *data;
 
<------>data = kzalloc(9 * MAX_LINE_LENGTH, GFP_KERNEL);
<------>if (!data)
<------><------>return;
 
<------>blob->data = data;
<------>data += sprintf(data, "rt chip:\t%04x\n", intf->rt2x00dev->chip.rt);
<------>data += sprintf(data, "rf chip:\t%04x\n", intf->rt2x00dev->chip.rf);
<------>data += sprintf(data, "revision:\t%04x\n", intf->rt2x00dev->chip.rev);
<------>data += sprintf(data, "\n");
<------>data += sprintf(data, "register\tbase\twords\twordsize\n");
#define RT2X00DEBUGFS_SPRINTF_REGISTER(__name)			\
{								\
<------>if (debug->__name.read)					\
<------><------>data += sprintf(data, __stringify(__name)	\
<------><------><------><------>"\t%d\t%d\t%d\n",		\
<------><------><------><------>debug->__name.word_base,	\
<------><------><------><------>debug->__name.word_count,	\
<------><------><------><------>debug->__name.word_size);	\
}
<------>RT2X00DEBUGFS_SPRINTF_REGISTER(csr);
<------>RT2X00DEBUGFS_SPRINTF_REGISTER(eeprom);
<------>RT2X00DEBUGFS_SPRINTF_REGISTER(bbp);
<------>RT2X00DEBUGFS_SPRINTF_REGISTER(rf);
<------>RT2X00DEBUGFS_SPRINTF_REGISTER(rfcsr);
#undef RT2X00DEBUGFS_SPRINTF_REGISTER
 
<------>blob->size = strlen(blob->data);
 
<------>debugfs_create_blob(name, 0400, intf->driver_folder, blob);
}
 
void rt2x00debug_register(struct rt2x00_dev *rt2x00dev)
{
<------>const struct rt2x00debug *debug = rt2x00dev->ops->debugfs;
<------>struct rt2x00debug_intf *intf;
<------>struct dentry *queue_folder;
<------>struct dentry *register_folder;
 
<------>intf = kzalloc(sizeof(struct rt2x00debug_intf), GFP_KERNEL);
<------>if (!intf) {
<------><------>rt2x00_err(rt2x00dev, "Failed to allocate debug handler\n");
<------><------>return;
<------>}
 
<------>intf->debug = debug;
<------>intf->rt2x00dev = rt2x00dev;
<------>rt2x00dev->debugfs_intf = intf;
 
<------>intf->driver_folder =
<------>    debugfs_create_dir(intf->rt2x00dev->ops->name,
<------><------><------>       rt2x00dev->hw->wiphy->debugfsdir);
 
<------>rt2x00debug_create_file_driver("driver", intf, &intf->driver_blob);
<------>rt2x00debug_create_file_chipset("chipset", intf, &intf->chipset_blob);
<------>debugfs_create_file("dev_flags", 0400, intf->driver_folder, intf,
<------><------><------>    &rt2x00debug_fop_dev_flags);
<------>debugfs_create_file("cap_flags", 0400, intf->driver_folder, intf,
<------><------><------>    &rt2x00debug_fop_cap_flags);
<------>debugfs_create_file("restart_hw", 0200, intf->driver_folder, intf,
<------><------><------>    &rt2x00debug_restart_hw);
 
<------>register_folder = debugfs_create_dir("register", intf->driver_folder);
 
#define RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(__intf, __name)		\
({									\
<------>if (debug->__name.read) {					\
<------><------>debugfs_create_u32(__stringify(__name) "_offset", 0600,	\
<------><------><------><------>   register_folder,			\
<------><------><------><------>   &(__intf)->offset_##__name);		\
<------><------><------><------><------><------><------><------><------>\
<------><------>debugfs_create_file(__stringify(__name) "_value", 0600,	\
<------><------><------><------>    register_folder, (__intf),		\
<------><------><------><------>    &rt2x00debug_fop_##__name);		\
<------>}								\
})
 
<------>RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, csr);
<------>RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, eeprom);
<------>RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, bbp);
<------>RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, rf);
<------>RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, rfcsr);
 
#undef RT2X00DEBUGFS_CREATE_REGISTER_ENTRY
 
<------>queue_folder = debugfs_create_dir("queue", intf->driver_folder);
 
<------>debugfs_create_file("dump", 0400, queue_folder, intf,
<------><------><------>    &rt2x00debug_fop_queue_dump);
 
<------>skb_queue_head_init(&intf->frame_dump_skbqueue);
<------>init_waitqueue_head(&intf->frame_dump_waitqueue);
 
<------>debugfs_create_file("queue", 0400, queue_folder, intf,
<------><------><------>    &rt2x00debug_fop_queue_stats);
 
#ifdef CONFIG_RT2X00_LIB_CRYPTO
<------>if (rt2x00_has_cap_hw_crypto(rt2x00dev))
<------><------>debugfs_create_file("crypto", 0444, queue_folder, intf,
<------><------><------><------>    &rt2x00debug_fop_crypto_stats);
#endif
 
<------>return;
}
 
void rt2x00debug_deregister(struct rt2x00_dev *rt2x00dev)
{
<------>struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
 
<------>if (unlikely(!intf))
<------><------>return;
 
<------>skb_queue_purge(&intf->frame_dump_skbqueue);
 
<------>debugfs_remove_recursive(intf->driver_folder);
<------>kfree(intf->chipset_blob.data);
<------>kfree(intf->driver_blob.data);
<------>kfree(intf);
 
<------>rt2x00dev->debugfs_intf = NULL;
}