On Monday 07 April 2008 00:42:57 Larry Finger wrote:
> Stefano and Michael,
>
> In order to test Stefano's recent patches for the BCM4303 using
> b43legacy, I dug out my Linksys WMP11-V27, which has a BCM4301 chip.
> Implementing it is a pain as it kills my sound card - thus it must be
> removed before I turn that computer back to my spouse (it runs Windows).
>
> The ssb details for the card are as follows:
>
> ssb: Core 0 found: IEEE 802.11 (cc 0x812, rev 0x02, vendor 0x4243)
> ssb: Core 1 found: PCMCIA (cc 0x80D, rev 0x00, vendor 0x4243)
> ssb: Core 2 found: Fast Ethernet (cc 0x806, rev 0x02, vendor 0x4243)
> ssb: Core 3 found: V90 (cc 0x807, rev 0x01, vendor 0x4243)
> ssb: Core 4 found: PCI (cc 0x804, rev 0x03, vendor 0x4243)
> ssb: SPROM revision 1 detected.
> ssb: Sonics Silicon Backplane found on PCI device 0000:00:0b.0
>
> The b43legacy and mac80211 messages that follow are:
>
> b43legacy-phy0: Broadcom 4301 WLAN found
> b43legacy-phy0 debug: Found PHY: Analog 0, Type 1, Revision 4
> b43legacy-phy0 debug: Found Radio: Manuf 0x17F, Version 0x2053, Revision 2
> b43legacy-phy0 debug: Radio initialized
> phy0: Selected rate control algorithm 'pid'
> Broadcom 43xx-legacy driver loaded [ Features: PID, Firmware-ID: FW10 ]
> b43legacy-phy0: Loading firmware version 0x127, patch level 14
> (2005-04-18 02:36:27)
> b43legacy-phy0 debug: Chip initialized
> b43legacy-phy0 debug: 30-bit DMA initialized
> b43legacy-phy0 debug: Wireless interface started
> b43legacy-phy0 debug: Adding Interface type 2
>
> The card works perfectly when running bcm43xx from the 2.6.22 kernel
> used by openSUSE 10.3, but fails to transmit when running b43legacy.
> The clue that there is a "TX problem" is seen when the module is unloaded:
>
> b43legacy-phy0 debug: DMA-30 0x0220 (TX) max used slots: 128/128
>
> To try to debug this, I added the following two printouts, and turned
> on debugging in mac80211.
>
> Index: wireless-testing/drivers/net/wireless/b43legacy/dma.c
> ===================================================================
> --- wireless-testing.orig/drivers/net/wireless/b43legacy/dma.c
> +++ wireless-testing/drivers/net/wireless/b43legacy/dma.c
> @@ -94,6 +94,7 @@ static void op32_poke_tx(struct b43legac
> {
> b43legacy_dma_write(ring, B43legacy_DMA32_TXINDEX,
> (u32)(slot * sizeof(struct
> b43legacy_dmadesc32)));
> + printk(KERN_INFO "b43legacy: 30/32-bit DMA poked\n");
Can you add a printk here that prints the contents of
B43legacy_DMA32_TXSTATUS
and post the logs?
This could actually be a bus (ssb) problem. Not sure, yet.
Some people do see it on b43, too.
--
Greetings Michael.
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