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authorMaciej Sosnowski <maciej.sosnowski@intel.com>2009-02-26 11:04:38 +0100
committerDan Williams <dan.j.williams@intel.com>2009-03-04 16:04:39 -0700
commitea9c717d0148d4194f9bd04ecfa6b59b20fc0a08 (patch)
tree9a7a614443b99c697ec1ad99547167fb79736faa /drivers/dma
parent49bc46360d68156ce82b2b1a12badb80078453a0 (diff)
downloadop-kernel-dev-ea9c717d0148d4194f9bd04ecfa6b59b20fc0a08.zip
op-kernel-dev-ea9c717d0148d4194f9bd04ecfa6b59b20fc0a08.tar.gz
I/OAT: do not set DCACTRL_CMPL_WRITE_ENABLE for I/OAT ver.3
Flag DCACTRL_CMPL_WRITE_ENABLE is valid only for I/OAT ver.2 so it should not be set for I/OAT ver.3. Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com> Signed-off-by: Shannon Nelson <shannon.nelson@intel.com> Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/ioat_dma.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/dma/ioat_dma.c b/drivers/dma/ioat_dma.c
index b3759c4..879f4a0 100644
--- a/drivers/dma/ioat_dma.c
+++ b/drivers/dma/ioat_dma.c
@@ -189,11 +189,13 @@ static int ioat_dma_enumerate_channels(struct ioatdma_device *device)
ioat_chan->xfercap = xfercap;
ioat_chan->desccount = 0;
INIT_DELAYED_WORK(&ioat_chan->work, ioat_dma_chan_reset_part2);
- if (ioat_chan->device->version != IOAT_VER_1_2) {
- writel(IOAT_DCACTRL_CMPL_WRITE_ENABLE
- | IOAT_DMA_DCA_ANY_CPU,
- ioat_chan->reg_base + IOAT_DCACTRL_OFFSET);
- }
+ if (ioat_chan->device->version == IOAT_VER_2_0)
+ writel(IOAT_DCACTRL_CMPL_WRITE_ENABLE |
+ IOAT_DMA_DCA_ANY_CPU,
+ ioat_chan->reg_base + IOAT_DCACTRL_OFFSET);
+ else if (ioat_chan->device->version == IOAT_VER_3_0)
+ writel(IOAT_DMA_DCA_ANY_CPU,
+ ioat_chan->reg_base + IOAT_DCACTRL_OFFSET);
spin_lock_init(&ioat_chan->cleanup_lock);
spin_lock_init(&ioat_chan->desc_lock);
INIT_LIST_HEAD(&ioat_chan->free_desc);
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