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b43legacy: fix TBTT and PU timings 

This fixes some timings for pre-TBTT and synthetic PU.
The patch by Michael Buesch has been ported to b43legacy.

Signed-off-by: Stefano Brivio <stefano.brivio@polimi.it>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Stefano Brivio 2008-04-14 00:57:03 +02:00 committed by John W. Linville
parent 245cbe7a65
commit 3e2c40ef09
2 changed files with 34 additions and 3 deletions
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3
drivers/net/wireless/b43legacy/b43legacy.h
View File

@ -97,6 +97,7 @@
#define B43legacy_MMIO_RADIO_HWENABLED_LO 0x49A
#define B43legacy_MMIO_GPIO_CONTROL 0x49C
#define B43legacy_MMIO_GPIO_MASK 0x49E
#define B43legacy_MMIO_TSF_CFP_PRETBTT 0x612
#define B43legacy_MMIO_TSF_0 0x632 /* core rev < 3 only */
#define B43legacy_MMIO_TSF_1 0x634 /* core rev < 3 only */
#define B43legacy_MMIO_TSF_2 0x636 /* core rev < 3 only */
@ -149,6 +150,8 @@
#define B43legacy_SHM_SH_UCODEPATCH 0x0002 /* Microcode patchlevel */
#define B43legacy_SHM_SH_UCODEDATE 0x0004 /* Microcode date */
#define B43legacy_SHM_SH_UCODETIME 0x0006 /* Microcode time */
#define B43legacy_SHM_SH_SPUWKUP 0x0094 /* pre-wakeup for synth PU in us */
#define B43legacy_SHM_SH_PRETBTT 0x0096 /* pre-TBTT in us */
#define B43legacy_UCODEFLAGS_OFFSET 0x005E

34
drivers/net/wireless/b43legacy/main.c
View File

@ -3005,6 +3005,34 @@ static void b43legacy_set_retry_limits(struct b43legacy_wldev *dev,
b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0007, long_retry);
}
static void b43legacy_set_synth_pu_delay(struct b43legacy_wldev *dev,
bool idle) {
u16 pu_delay = 1050;
if (b43legacy_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS) || idle)
pu_delay = 500;
if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8))
pu_delay = max(pu_delay, (u16)2400);
b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
B43legacy_SHM_SH_SPUWKUP, pu_delay);
}
/* Set the TSF CFP pre-TargetBeaconTransmissionTime. */
static void b43legacy_set_pretbtt(struct b43legacy_wldev *dev)
{
u16 pretbtt;
/* The time value is in microseconds. */
if (b43legacy_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS))
pretbtt = 2;
else
pretbtt = 250;
b43legacy_shm_write16(dev, B43legacy_SHM_SHARED,
B43legacy_SHM_SH_PRETBTT, pretbtt);
b43legacy_write16(dev, B43legacy_MMIO_TSF_CFP_PRETBTT, pretbtt);
}
/* Shutdown a wireless core */
/* Locking: wl->mutex */
static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev)
@ -3191,9 +3219,7 @@ static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev)
if (err)
goto err_chip_exit;
b43legacy_write16(dev, 0x0612, 0x0050);
b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0416, 0x0050);
b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0414, 0x01F4);
b43legacy_set_synth_pu_delay(dev, 1);
ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */
b43legacy_upload_card_macaddress(dev);
@ -3249,6 +3275,8 @@ static int b43legacy_op_add_interface(struct ieee80211_hw *hw,
spin_lock_irqsave(&wl->irq_lock, flags);
b43legacy_adjust_opmode(dev);
b43legacy_set_pretbtt(dev);
b43legacy_set_synth_pu_delay(dev, 0);
b43legacy_upload_card_macaddress(dev);
spin_unlock_irqrestore(&wl->irq_lock, flags);