linux/drivers/net/wireless/rt2x00/rt2x00debug.c

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/*
Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
<http://rt2x00.serialmonkey.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the
Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
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 cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 08:04:11 +00:00
#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 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
* - crypto 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 *eeprom_val_entry;
struct dentry *bbp_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;
struct dentry *crypto_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;
/*
* 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;
};
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 sk_buff *skb)
{
struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf;
struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
struct sk_buff *skbcopy;
struct rt2x00dump_hdr *dump_hdr;
struct timeval timestamp;
u32 data_len;
do_gettimeofday(&timestamp);
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;
}
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) {
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(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 = skbdesc->entry->queue->qid;
dump_hdr->entry_index = skbdesc->entry->entry_idx;
dump_hdr->timestamp_sec = cpu_to_le32(timestamp.tv_sec);
dump_hdr->timestamp_usec = cpu_to_le32(timestamp.tv_usec);
if (!(skbdesc->flags & SKBDESC_DESC_IN_SKB))
memcpy(skb_put(skbcopy, skbdesc->desc_len), skbdesc->desc,
skbdesc->desc_len);
memcpy(skb_put(skbcopy, skb->len), 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);
}
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((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;
rt2x00: Upgrade queue->lock to use irqsave The queue->lock could be grabbed from interrupt context, which could lead to lockdep panic like this: kernel: ====================================================== kernel: [ INFO: soft-safe -> soft-unsafe lock order detected ] kernel: 2.6.25-0.95.rc4.fc9 #1 kernel: ------------------------------------------------------ kernel: rt2500pci/1251 [HC0[0]:SC0[1]:HE1:SE0] is trying to acquire: kernel: (&queue->lock){--..}, at: [<ffffffff88213339>] rt2x00queue_get_entry+0x5a/0x81 [rt2x00lib] kernel: kernel: and this task is already holding: kernel: (_xmit_IEEE80211){-...}, at: [<ffffffff8122e9a3>] __qdisc_run+0x84/0x1a9 kernel: which would create a new lock dependency: kernel: (_xmit_IEEE80211){-...} -> (&queue->lock){--..} kernel: kernel: but this new dependency connects a soft-irq-safe lock: kernel: (_xmit_ETHER){-+..} kernel: ... which became soft-irq-safe at: kernel: [<ffffffffffffffff>] 0xffffffffffffffff kernel: kernel: to a soft-irq-unsafe lock: kernel: (&queue->lock){--..} kernel: ... which became soft-irq-unsafe at: kernel: ... [<ffffffff810545a2>] __lock_acquire+0x62d/0xd63 kernel: [<ffffffff81054d36>] lock_acquire+0x5e/0x78 kernel: [<ffffffff812a1497>] _spin_lock+0x26/0x53 kernel: [<ffffffff88212f98>] rt2x00queue_reset+0x16/0x40 [rt2x00lib] kernel: [<ffffffff88212fd4>] rt2x00queue_alloc_entries+0x12/0xab [rt2x00lib] kernel: [<ffffffff88213091>] rt2x00queue_initialize+0x24/0xf2 [rt2x00lib] kernel: [<ffffffff88212036>] rt2x00lib_start+0x3b/0xd4 [rt2x00lib] kernel: [<ffffffff88212609>] rt2x00mac_start+0x18/0x1a [rt2x00lib] kernel: [<ffffffff881b9a4b>] ieee80211_open+0x1f3/0x46d [mac80211] kernel: [<ffffffff8121d980>] dev_open+0x4d/0x8b kernel: [<ffffffff8121d41e>] dev_change_flags+0xaf/0x172 kernel: [<ffffffff81224fc2>] do_setlink+0x276/0x338 kernel: [<ffffffff81225198>] rtnl_setlink+0x114/0x116 kernel: [<ffffffff812262fc>] rtnetlink_rcv_msg+0x1d8/0x1f9 kernel: [<ffffffff8123649a>] netlink_rcv_skb+0x3e/0xac kernel: [<ffffffff8122611a>] rtnetlink_rcv+0x29/0x33 kernel: [<ffffffff81235eed>] netlink_unicast+0x1fe/0x26b kernel: [<ffffffff81236224>] netlink_sendmsg+0x2ca/0x2dd kernel: [<ffffffff812103b3>] sock_sendmsg+0xfd/0x120 kernel: [<ffffffff812105a8>] sys_sendmsg+0x1d2/0x23c kernel: [<ffffffff8100c1c7>] tracesys+0xdc/0xe1 kernel: [<ffffffffffffffff>] 0xffffffffffffffff This can be fixed by using the irqsave/irqrestore versions during the queue->lock handling. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-03-09 21:44:30 +00:00
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) {
rt2x00: Upgrade queue->lock to use irqsave The queue->lock could be grabbed from interrupt context, which could lead to lockdep panic like this: kernel: ====================================================== kernel: [ INFO: soft-safe -> soft-unsafe lock order detected ] kernel: 2.6.25-0.95.rc4.fc9 #1 kernel: ------------------------------------------------------ kernel: rt2500pci/1251 [HC0[0]:SC0[1]:HE1:SE0] is trying to acquire: kernel: (&queue->lock){--..}, at: [<ffffffff88213339>] rt2x00queue_get_entry+0x5a/0x81 [rt2x00lib] kernel: kernel: and this task is already holding: kernel: (_xmit_IEEE80211){-...}, at: [<ffffffff8122e9a3>] __qdisc_run+0x84/0x1a9 kernel: which would create a new lock dependency: kernel: (_xmit_IEEE80211){-...} -> (&queue->lock){--..} kernel: kernel: but this new dependency connects a soft-irq-safe lock: kernel: (_xmit_ETHER){-+..} kernel: ... which became soft-irq-safe at: kernel: [<ffffffffffffffff>] 0xffffffffffffffff kernel: kernel: to a soft-irq-unsafe lock: kernel: (&queue->lock){--..} kernel: ... which became soft-irq-unsafe at: kernel: ... [<ffffffff810545a2>] __lock_acquire+0x62d/0xd63 kernel: [<ffffffff81054d36>] lock_acquire+0x5e/0x78 kernel: [<ffffffff812a1497>] _spin_lock+0x26/0x53 kernel: [<ffffffff88212f98>] rt2x00queue_reset+0x16/0x40 [rt2x00lib] kernel: [<ffffffff88212fd4>] rt2x00queue_alloc_entries+0x12/0xab [rt2x00lib] kernel: [<ffffffff88213091>] rt2x00queue_initialize+0x24/0xf2 [rt2x00lib] kernel: [<ffffffff88212036>] rt2x00lib_start+0x3b/0xd4 [rt2x00lib] kernel: [<ffffffff88212609>] rt2x00mac_start+0x18/0x1a [rt2x00lib] kernel: [<ffffffff881b9a4b>] ieee80211_open+0x1f3/0x46d [mac80211] kernel: [<ffffffff8121d980>] dev_open+0x4d/0x8b kernel: [<ffffffff8121d41e>] dev_change_flags+0xaf/0x172 kernel: [<ffffffff81224fc2>] do_setlink+0x276/0x338 kernel: [<ffffffff81225198>] rtnl_setlink+0x114/0x116 kernel: [<ffffffff812262fc>] rtnetlink_rcv_msg+0x1d8/0x1f9 kernel: [<ffffffff8123649a>] netlink_rcv_skb+0x3e/0xac kernel: [<ffffffff8122611a>] rtnetlink_rcv+0x29/0x33 kernel: [<ffffffff81235eed>] netlink_unicast+0x1fe/0x26b kernel: [<ffffffff81236224>] netlink_sendmsg+0x2ca/0x2dd kernel: [<ffffffff812103b3>] sock_sendmsg+0xfd/0x120 kernel: [<ffffffff812105a8>] sys_sendmsg+0x1d2/0x23c kernel: [<ffffffff8100c1c7>] tracesys+0xdc/0xe1 kernel: [<ffffffffffffffff>] 0xffffffffffffffff This can be fixed by using the irqsave/irqrestore versions during the queue->lock handling. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-03-09 21:44:30 +00:00
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]);
rt2x00: Upgrade queue->lock to use irqsave The queue->lock could be grabbed from interrupt context, which could lead to lockdep panic like this: kernel: ====================================================== kernel: [ INFO: soft-safe -> soft-unsafe lock order detected ] kernel: 2.6.25-0.95.rc4.fc9 #1 kernel: ------------------------------------------------------ kernel: rt2500pci/1251 [HC0[0]:SC0[1]:HE1:SE0] is trying to acquire: kernel: (&queue->lock){--..}, at: [<ffffffff88213339>] rt2x00queue_get_entry+0x5a/0x81 [rt2x00lib] kernel: kernel: and this task is already holding: kernel: (_xmit_IEEE80211){-...}, at: [<ffffffff8122e9a3>] __qdisc_run+0x84/0x1a9 kernel: which would create a new lock dependency: kernel: (_xmit_IEEE80211){-...} -> (&queue->lock){--..} kernel: kernel: but this new dependency connects a soft-irq-safe lock: kernel: (_xmit_ETHER){-+..} kernel: ... which became soft-irq-safe at: kernel: [<ffffffffffffffff>] 0xffffffffffffffff kernel: kernel: to a soft-irq-unsafe lock: kernel: (&queue->lock){--..} kernel: ... which became soft-irq-unsafe at: kernel: ... [<ffffffff810545a2>] __lock_acquire+0x62d/0xd63 kernel: [<ffffffff81054d36>] lock_acquire+0x5e/0x78 kernel: [<ffffffff812a1497>] _spin_lock+0x26/0x53 kernel: [<ffffffff88212f98>] rt2x00queue_reset+0x16/0x40 [rt2x00lib] kernel: [<ffffffff88212fd4>] rt2x00queue_alloc_entries+0x12/0xab [rt2x00lib] kernel: [<ffffffff88213091>] rt2x00queue_initialize+0x24/0xf2 [rt2x00lib] kernel: [<ffffffff88212036>] rt2x00lib_start+0x3b/0xd4 [rt2x00lib] kernel: [<ffffffff88212609>] rt2x00mac_start+0x18/0x1a [rt2x00lib] kernel: [<ffffffff881b9a4b>] ieee80211_open+0x1f3/0x46d [mac80211] kernel: [<ffffffff8121d980>] dev_open+0x4d/0x8b kernel: [<ffffffff8121d41e>] dev_change_flags+0xaf/0x172 kernel: [<ffffffff81224fc2>] do_setlink+0x276/0x338 kernel: [<ffffffff81225198>] rtnl_setlink+0x114/0x116 kernel: [<ffffffff812262fc>] rtnetlink_rcv_msg+0x1d8/0x1f9 kernel: [<ffffffff8123649a>] netlink_rcv_skb+0x3e/0xac kernel: [<ffffffff8122611a>] rtnetlink_rcv+0x29/0x33 kernel: [<ffffffff81235eed>] netlink_unicast+0x1fe/0x26b kernel: [<ffffffff81236224>] netlink_sendmsg+0x2ca/0x2dd kernel: [<ffffffff812103b3>] sock_sendmsg+0xfd/0x120 kernel: [<ffffffff812105a8>] sys_sendmsg+0x1d2/0x23c kernel: [<ffffffff8100c1c7>] tracesys+0xdc/0xe1 kernel: [<ffffffffffffffff>] 0xffffffffffffffff This can be fixed by using the irqsave/irqrestore versions during the queue->lock handling. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-03-09 21:44:30 +00:00
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,
};
#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;
char *name[] = { "WEP64", "WEP128", "TKIP", "AES" };
char *data;
char *temp;
size_t size;
unsigned int i;
if (*offset)
return 0;
data = kzalloc((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,
};
#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; \
\
debug->__name.read(intf->rt2x00dev, index, &value); \
\
size = sprintf(line, __format, value); \
\
if (copy_to_user(buf, line, size)) \
return -EFAULT; \
\
*offset += size; \
return 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[16]; \
size_t size; \
unsigned int index = intf->offset_##__name; \
__type value; \
\
if (*offset) \
return 0; \
\
if (index >= debug->__name.word_count) \
return -EINVAL; \
\
if (copy_from_user(line, buf, length)) \
return -EFAULT; \
\
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, \
};
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);
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);
if (copy_to_user(buf, line, size))
return -EFAULT;
*offset += size;
return 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,
};
static struct dentry *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 NULL;
blob->data = data;
data += sprintf(data, "driver:\t%s\n", intf->rt2x00dev->ops->name);
data += sprintf(data, "version:\t%s\n", DRV_VERSION);
data += sprintf(data, "compiled:\t%s %s\n", __DATE__, __TIME__);
blob->size = strlen(blob->data);
return debugfs_create_blob(name, S_IRUSR, intf->driver_folder, blob);
}
static struct dentry *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(8 * MAX_LINE_LENGTH, GFP_KERNEL);
if (!data)
return NULL;
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");
data += sprintf(data, "csr\t%d\t%d\t%d\n",
debug->csr.word_base,
debug->csr.word_count,
debug->csr.word_size);
data += sprintf(data, "eeprom\t%d\t%d\t%d\n",
debug->eeprom.word_base,
debug->eeprom.word_count,
debug->eeprom.word_size);
data += sprintf(data, "bbp\t%d\t%d\t%d\n",
debug->bbp.word_base,
debug->bbp.word_count,
debug->bbp.word_size);
data += sprintf(data, "rf\t%d\t%d\t%d\n",
debug->rf.word_base,
debug->rf.word_count,
debug->rf.word_size);
blob->size = strlen(blob->data);
return debugfs_create_blob(name, S_IRUSR, intf->driver_folder, blob);
}
void rt2x00debug_register(struct rt2x00_dev *rt2x00dev)
{
const struct rt2x00debug *debug = rt2x00dev->ops->debugfs;
struct rt2x00debug_intf *intf;
intf = kzalloc(sizeof(struct rt2x00debug_intf), GFP_KERNEL);
if (!intf) {
ERROR(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);
if (IS_ERR(intf->driver_folder) || !intf->driver_folder)
goto exit;
intf->driver_entry =
rt2x00debug_create_file_driver("driver", intf, &intf->driver_blob);
if (IS_ERR(intf->driver_entry) || !intf->driver_entry)
goto exit;
intf->chipset_entry =
rt2x00debug_create_file_chipset("chipset",
intf, &intf->chipset_blob);
if (IS_ERR(intf->chipset_entry) || !intf->chipset_entry)
goto exit;
intf->dev_flags = debugfs_create_file("dev_flags", S_IRUSR,
intf->driver_folder, intf,
&rt2x00debug_fop_dev_flags);
if (IS_ERR(intf->dev_flags) || !intf->dev_flags)
goto exit;
intf->register_folder =
debugfs_create_dir("register", intf->driver_folder);
if (IS_ERR(intf->register_folder) || !intf->register_folder)
goto exit;
#define RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(__intf, __name) \
({ \
(__intf)->__name##_off_entry = \
debugfs_create_u32(__stringify(__name) "_offset", \
S_IRUSR | S_IWUSR, \
(__intf)->register_folder, \
&(__intf)->offset_##__name); \
if (IS_ERR((__intf)->__name##_off_entry) \
|| !(__intf)->__name##_off_entry) \
goto exit; \
\
(__intf)->__name##_val_entry = \
debugfs_create_file(__stringify(__name) "_value", \
S_IRUSR | S_IWUSR, \
(__intf)->register_folder, \
(__intf), &rt2x00debug_fop_##__name);\
if (IS_ERR((__intf)->__name##_val_entry) \
|| !(__intf)->__name##_val_entry) \
goto exit; \
})
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
intf->queue_folder =
debugfs_create_dir("queue", intf->driver_folder);
if (IS_ERR(intf->queue_folder) || !intf->queue_folder)
goto exit;
intf->queue_frame_dump_entry =
debugfs_create_file("dump", S_IRUSR, intf->queue_folder,
intf, &rt2x00debug_fop_queue_dump);
if (IS_ERR(intf->queue_frame_dump_entry)
|| !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_IRUSR, intf->queue_folder,
intf, &rt2x00debug_fop_queue_stats);
#ifdef CONFIG_RT2X00_LIB_CRYPTO
if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags))
intf->crypto_stats_entry =
debugfs_create_file("crypto", S_IRUGO, intf->queue_folder,
intf, &rt2x00debug_fop_crypto_stats);
#endif
return;
exit:
rt2x00debug_deregister(rt2x00dev);
ERROR(rt2x00dev, "Failed to register debug handler.\n");
}
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);
#ifdef CONFIG_RT2X00_LIB_CRYPTO
debugfs_remove(intf->crypto_stats_entry);
#endif
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->bbp_off_entry);
debugfs_remove(intf->eeprom_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);
debugfs_remove(intf->driver_folder);
kfree(intf->chipset_blob.data);
kfree(intf->driver_blob.data);
kfree(intf);
rt2x00dev->debugfs_intf = NULL;
}