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| author | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2007-02-04 20:25:43 +0100 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2007-04-30 00:00:27 +0200 |
| commit | 0555659d63c285ceb7ead3115532e1b71b0f27a7 (patch) | |
| tree | 45e8f594a9e8d738bd8966649433516790285df8 /drivers | |
| parent | f412bf440be2dfc0f0ded917410c599c002549e0 (diff) | |
| download | linux-0555659d63c285ceb7ead3115532e1b71b0f27a7.tar.gz linux-0555659d63c285ceb7ead3115532e1b71b0f27a7.tar.bz2 linux-0555659d63c285ceb7ead3115532e1b71b0f27a7.zip | |
ieee1394: sbp2: enforce 32bit DMA mapping
In order to use OHCI-1394 physical DMA, all s/g elements, s/g tables,
ORBs, and response buffers have to reside within the first 4 GB of the
FireWire controller's physical address space. Set the correct mask for
DMA mappings.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ieee1394/sbp2.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/ieee1394/sbp2.c b/drivers/ieee1394/sbp2.c index 4edfff46b1e6..e15b5d7b9a02 100644 --- a/drivers/ieee1394/sbp2.c +++ b/drivers/ieee1394/sbp2.c @@ -757,6 +757,11 @@ static struct sbp2_lu *sbp2_alloc_device(struct unit_directory *ud) SBP2_ERR("failed to register lower 4GB address range"); goto failed_alloc; } +#else + if (dma_set_mask(hi->host->device.parent, DMA_32BIT_MASK)) { + SBP2_ERR("failed to set 4GB DMA mask"); + goto failed_alloc; + } #endif } |