From: David Woodhouse <dwmw2@infradead.org>
To: b43-dev@lists.infradead.org
Subject: No DMA RX on some BCM4321, on BCM43224 and BCM43225
Date: Tue, 19 Jul 2011 15:33:14 -0700 [thread overview]
Message-ID: <1311114796.3062.9.camel@shinybook.infradead.org> (raw)
In-Reply-To: <CACna6rxEJ1TuoGsZF=4dy0ezNZjjZFkaASbbyrgurwa_mYzEVw@mail.gmail.com>
On Mon, 2011-07-18 at 22:14 +0200, Rafa? Mi?ecki wrote:
> When using DMA on one of my BCM4321s and BCM43224 or BCM43225 I don't
> get a single RX IRQ.
>
> Doing scanning requests sends TX packets to the hardware, and the
> ucode generates IRQs for confirming transmitted packets. RX does not
> seem to work however. I expected to see "native" beacons, or response
> to the scanning request.
>
> Do you have idea what may be wrong, where should I look at? So far
> I've discovered (from looking at MMIO dumps) that:
> 1) wl uses 38 as B43_DMA0_RX_FRAMEOFFSET (instead of our 30)
> 2) wl enables channel with 0x801, not just 0x1 (specs say 0x800 is
> Parity Disable - Not on all units)
>
> I've implemented both changes in b43, it didn't help.
The other thing I observed that under ndiswrapper, the Windows driver
(for BCM4331) was writing the full physical address to the TX_INDEX
register, not an index at all.
Setup...
W 4 159.866820 1 0xb06002c8 0x1f86c000 0x0 0
W 4 159.866822 1 0xb06002cc 0x80000000 0x0 0
R 4 159.866827 1 0xb06002c0 0x0 0x0 0
W 4 159.866829 1 0xb06002c0 0x801 0x0 0
... and use:
W 4 197.207151 1 0xb06002c4 0x1f86c010 0x0 0
... and again later:
W 4 197.228596 1 0xb06002c4 0x1f86c020 0x0 0
Is that behaviour understood?
Btw, Rafa?, if you want to publish a git tree on git.infradead.org I can
give you an account there). Do you prefer username 'rafal' or 'zajec'...
or something different?
--
dwmw2
next prev parent reply other threads:[~2011-07-19 22:33 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-18 20:14 No DMA RX on some BCM4321, on BCM43224 and BCM43225 Rafał Miłecki
2011-07-18 20:29 ` Larry Finger
2011-07-18 22:30 ` Rafał Miłecki
2011-07-18 23:32 ` Rafał Miłecki
2011-07-19 6:56 ` Rafał Miłecki
2011-07-19 14:46 ` Larry Finger
2011-07-19 15:12 ` Jonas Gorski
2011-07-18 20:41 ` Michael Büsch
2011-07-18 22:39 ` Rafał Miłecki
2011-07-18 22:59 ` Michael Büsch
2011-07-18 23:07 ` Rafał Miłecki
2011-07-18 23:08 ` Michael Büsch
2011-07-18 23:15 ` Rafał Miłecki
2011-07-18 23:24 ` Michael Büsch
2011-07-18 23:29 ` Rafał Miłecki
2011-07-18 23:12 ` Rafał Miłecki
2011-07-19 22:33 ` David Woodhouse [this message]
2011-08-12 1:41 ` David Woodhouse
2011-08-12 10:15 ` [PATCH] b43: Mask out unwanted bits of RX slot address David Woodhouse
2011-08-13 19:10 ` Rafał Miłecki
2011-08-13 19:38 ` Michael Büsch
2011-08-13 22:13 ` Rafał Miłecki
2011-08-13 22:56 ` David Woodhouse
2011-08-14 8:18 ` Rafał Miłecki
2011-08-14 8:19 ` David Woodhouse
2011-08-14 9:02 ` Rafał Miłecki
2011-08-14 9:07 ` Rafał Miłecki
2011-08-14 9:24 ` Rafał Miłecki
2011-08-14 9:31 ` Rafał Miłecki
2011-08-14 11:17 ` Rafał Miłecki
2011-08-14 11:22 ` Rafał Miłecki
2011-08-14 11:35 ` David Woodhouse
2011-08-14 15:02 ` Rafał Miłecki
2011-08-14 15:10 ` Michael Büsch
2011-08-14 11:38 ` Rafał Miłecki
2011-08-14 11:52 ` Michael Büsch
2011-08-14 12:06 ` David Woodhouse
2011-08-14 13:43 ` Rafał Miłecki
2011-08-12 10:27 ` [PATCH] Fix alignment issues with DMA TX on BCM4331 David Woodhouse
2011-08-13 19:06 ` Rafał Miłecki
2011-08-13 20:18 ` David Woodhouse
2011-08-13 20:22 ` Rafał Miłecki
2011-08-13 20:36 ` David Woodhouse
2011-08-14 8:09 ` Rafał Miłecki
2011-08-13 21:57 ` Larry Finger
2011-08-13 22:02 ` Rafał Miłecki
2011-08-13 22:07 ` David Woodhouse
2011-08-13 22:12 ` Rafał Miłecki
2011-08-13 22:17 ` David Woodhouse
2011-08-14 7:10 ` Rafał Miłecki
2011-08-14 7:35 ` Rafał Miłecki
2011-08-14 8:04 ` David Woodhouse
2011-08-14 8:14 ` Rafał Miłecki
2011-08-13 22:14 ` Larry Finger
2011-08-13 22:17 ` David Woodhouse
2011-08-13 22:29 ` Larry Finger
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