From: "Alina Friedrichsen" <x-alina@gmx.net>
To: linux-wireless@vger.kernel.org, linville@tuxdriver.com,
johannes@sipsolutions.net
Subject: [PATCH v2] b43: Accessing the TSF via mac80211
Date: Sun, 25 Jan 2009 15:06:11 +0100 [thread overview]
Message-ID: <20090125140611.136280@gmx.net> (raw)
This allows the mac80211 high level code to access the TSF. This is e.g=
=2E needed for BSSID merges in the IBSS mode.
The second version adds locking and removes the now unnecessary debugfs=
entries.
Thanks to Michael Buesch! :)
Signed-off-by: Alina Friedrichsen <x-alina@gmx.net>
---
diff -urN wireless-testing.orig/drivers/net/wireless/b43/debugfs.c wire=
less-testing/drivers/net/wireless/b43/debugfs.c
--- wireless-testing.orig/drivers/net/wireless/b43/debugfs.c 2009-01-25=
06:12:13.000000000 +0100
+++ wireless-testing/drivers/net/wireless/b43/debugfs.c 2009-01-25 14:3=
8:30.000000000 +0100
@@ -367,34 +367,6 @@
return 0;
}
=20
-/* wl->irq_lock is locked */
-static ssize_t tsf_read_file(struct b43_wldev *dev,
- char *buf, size_t bufsize)
-{
- ssize_t count =3D 0;
- u64 tsf;
-
- b43_tsf_read(dev, &tsf);
- fappend("0x%08x%08x\n",
- (unsigned int)((tsf & 0xFFFFFFFF00000000ULL) >> 32),
- (unsigned int)(tsf & 0xFFFFFFFFULL));
-
- return count;
-}
-
-/* wl->irq_lock is locked */
-static int tsf_write_file(struct b43_wldev *dev,
- const char *buf, size_t count)
-{
- u64 tsf;
-
- if (sscanf(buf, "%llu", (unsigned long long *)(&tsf)) !=3D 1)
- return -EINVAL;
- b43_tsf_write(dev, tsf);
-
- return 0;
-}
-
static ssize_t txstat_read_file(struct b43_wldev *dev,
char *buf, size_t bufsize)
{
@@ -691,7 +663,6 @@
B43_DEBUGFS_FOPS(mmio16write, NULL, mmio16write__write_file, 1);
B43_DEBUGFS_FOPS(mmio32read, mmio32read__read_file, mmio32read__write_=
file, 1);
B43_DEBUGFS_FOPS(mmio32write, NULL, mmio32write__write_file, 1);
-B43_DEBUGFS_FOPS(tsf, tsf_read_file, tsf_write_file, 1);
B43_DEBUGFS_FOPS(txstat, txstat_read_file, NULL, 0);
B43_DEBUGFS_FOPS(restart, NULL, restart_write_file, 1);
B43_DEBUGFS_FOPS(loctls, loctls_read_file, NULL, 0);
@@ -805,7 +776,6 @@
ADD_FILE(mmio16write, 0200);
ADD_FILE(mmio32read, 0600);
ADD_FILE(mmio32write, 0200);
- ADD_FILE(tsf, 0600);
ADD_FILE(txstat, 0400);
ADD_FILE(restart, 0200);
ADD_FILE(loctls, 0400);
@@ -834,7 +804,6 @@
debugfs_remove(e->file_mmio16write.dentry);
debugfs_remove(e->file_mmio32read.dentry);
debugfs_remove(e->file_mmio32write.dentry);
- debugfs_remove(e->file_tsf.dentry);
debugfs_remove(e->file_txstat.dentry);
debugfs_remove(e->file_restart.dentry);
debugfs_remove(e->file_loctls.dentry);
diff -urN wireless-testing.orig/drivers/net/wireless/b43/debugfs.h wire=
less-testing/drivers/net/wireless/b43/debugfs.h
--- wireless-testing.orig/drivers/net/wireless/b43/debugfs.h 2009-01-25=
06:12:13.000000000 +0100
+++ wireless-testing/drivers/net/wireless/b43/debugfs.h 2009-01-25 14:3=
9:33.000000000 +0100
@@ -46,7 +46,6 @@
struct b43_dfs_file file_mmio16write;
struct b43_dfs_file file_mmio32read;
struct b43_dfs_file file_mmio32write;
- struct b43_dfs_file file_tsf;
struct b43_dfs_file file_txstat;
struct b43_dfs_file file_txpower_g;
struct b43_dfs_file file_restart;
diff -urN wireless-testing.orig/drivers/net/wireless/b43/main.c wireles=
s-testing/drivers/net/wireless/b43/main.c
--- wireless-testing.orig/drivers/net/wireless/b43/main.c 2009-01-25 06=
:12:13.000000000 +0100
+++ wireless-testing/drivers/net/wireless/b43/main.c 2009-01-25 14:35:5=
1.000000000 +0100
@@ -3177,6 +3177,45 @@
return 0;
}
=20
+static u64 b43_op_get_tsf(struct ieee80211_hw *hw)
+{
+ struct b43_wl *wl =3D hw_to_b43_wl(hw);
+ unsigned long flags;
+ struct b43_wldev *dev;
+ u64 tsf;
+
+ mutex_lock(&wl->mutex);
+ spin_lock_irqsave(&wl->irq_lock, flags);
+ dev =3D wl->current_dev;
+
+ if(dev && (b43_status(dev) >=3D B43_STAT_INITIALIZED))
+ b43_tsf_read(dev, &tsf);
+ else
+ tsf =3D 0;
+
+ spin_unlock_irqrestore(&wl->irq_lock, flags);
+ mutex_unlock(&wl->mutex);
+
+ return tsf;
+}
+
+static void b43_op_set_tsf(struct ieee80211_hw *hw, u64 tsf)
+{
+ struct b43_wl *wl =3D hw_to_b43_wl(hw);
+ unsigned long flags;
+ struct b43_wldev *dev;
+
+ mutex_lock(&wl->mutex);
+ spin_lock_irqsave(&wl->irq_lock, flags);
+ dev =3D wl->current_dev;
+
+ if(dev && (b43_status(dev) >=3D B43_STAT_INITIALIZED))
+ b43_tsf_write(dev, tsf);
+
+ spin_unlock_irqrestore(&wl->irq_lock, flags);
+ mutex_unlock(&wl->mutex);
+}
+
static void b43_put_phy_into_reset(struct b43_wldev *dev)
{
struct ssb_device *sdev =3D dev->dev;
@@ -4296,6 +4335,8 @@
.set_key =3D b43_op_set_key,
.get_stats =3D b43_op_get_stats,
.get_tx_stats =3D b43_op_get_tx_stats,
+ .get_tsf =3D b43_op_get_tsf,
+ .set_tsf =3D b43_op_set_tsf,
.start =3D b43_op_start,
.stop =3D b43_op_stop,
.set_tim =3D b43_op_beacon_set_tim,
--=20
Psssst! Schon vom neuen GMX MultiMessenger geh=F6rt? Der kann`s mit all=
en: http://www.gmx.net/de/go/multimessenger
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next reply other threads:[~2009-01-25 14:06 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-25 14:06 Alina Friedrichsen [this message]
2009-01-25 14:13 ` [PATCH v2] b43: Accessing the TSF via mac80211 Michael Buesch
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