* [PATCH] b43legacy: fix TBTT and PU timings
@ 2008-04-13 22:57 Stefano Brivio
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From: Stefano Brivio @ 2008-04-13 22:57 UTC (permalink / raw
To: John Linville; +Cc: linux-wireless, Michael Buesch, bcm43xx-dev
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>
---
John, this is for 2.6.26.
---
Index: bcm-testing/drivers/net/wireless/b43legacy/b43legacy.h
===================================================================
--- bcm-testing.orig/drivers/net/wireless/b43legacy/b43legacy.h
+++ bcm-testing/drivers/net/wireless/b43legacy/b43legacy.h
@@ -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
Index: bcm-testing/drivers/net/wireless/b43legacy/main.c
===================================================================
--- bcm-testing.orig/drivers/net/wireless/b43legacy/main.c
+++ bcm-testing/drivers/net/wireless/b43legacy/main.c
@@ -3007,6 +3007,34 @@ static void b43legacy_set_retry_limits(s
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)
@@ -3193,9 +3221,7 @@ static int b43legacy_wireless_core_init(
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);
@@ -3251,6 +3277,8 @@ static int b43legacy_op_add_interface(st
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);
--
Ciao
Stefano
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2008-04-13 22:57 [PATCH] b43legacy: fix TBTT and PU timings Stefano Brivio
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