From: Chuck Ebbert <cebbert@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: Andi Kleen <ak@linux.intel.com>, David Woodhouse <dwmw2@infradead.org>
Subject: b44 driver causes panic when using swiotlb
Date: Mon, 31 Jan 2011 10:54:12 -0500 [thread overview]
Message-ID: <20110131105412.7252a09c@katamari> (raw)
The b44 driver is triggering this panic in swiotlb_map_page():
if (!dma_capable(dev, dev_addr, size))
panic("map_single: bounce buffer is not DMA'ble");
The kernel log says the bounce buffers are at 0xdb400000, but b44 can
only do DMA to the first 1GB of memory:
PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
Placing 64MB software IO TLB between ffff8800db400000 - ffff8800df400000
software IO TLB at phys 0xdb400000 - 0xdf400000
next reply other threads:[~2011-01-31 15:57 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-31 15:54 Chuck Ebbert [this message]
2011-01-31 16:36 ` b44 driver causes panic when using swiotlb Andi Kleen
2011-02-01 0:54 ` Robert Hancock
2011-02-01 1:28 ` FUJITA Tomonori
2011-02-01 3:22 ` Robert Hancock
2011-02-01 5:22 ` FUJITA Tomonori
2011-02-15 0:47 ` Robert Hancock
2011-02-01 21:18 ` Chuck Ebbert
2011-02-02 0:06 ` FUJITA Tomonori
2011-02-02 0:09 ` FUJITA Tomonori
2011-02-01 18:07 ` Andi Kleen
2011-02-01 21:44 ` Robert Hancock
2011-02-01 13:54 ` FUJITA Tomonori
2011-02-14 11:59 ` FUJITA Tomonori
2011-02-14 16:41 ` Arkadiusz Miśkiewicz
2011-02-15 0:39 ` FUJITA Tomonori
2011-02-15 22:03 ` Chuck Ebbert
[not found] <4D478EDC.4070004@lwfinger.net>
2011-02-01 4:53 ` Larry Finger
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