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dmaengine: IOATDMA: Removing descriptor ring reshape

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Moving to contingous memory backed descriptor rings. This makes is really
difficult and complex to do reshape. Going to remove this as I don't think
we need to do it anymore.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Dave Jiang
2016-02-10 15:00:26 -07:00
committed by Vinod Koul
parent 679cfbf79b
commit cd60cd9613
3 changed files with 1 additions and 157 deletions
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10
drivers/dma/ioat/init.c
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@@ -136,14 +136,6 @@ int ioat_pending_level = 4;
module_param(ioat_pending_level, int, 0644);
MODULE_PARM_DESC(ioat_pending_level,
"high-water mark for pushing ioat descriptors (default: 4)");
int ioat_ring_alloc_order = 8;
module_param(ioat_ring_alloc_order, int, 0644);
MODULE_PARM_DESC(ioat_ring_alloc_order,
"ioat+: allocate 2^n descriptors per channel (default: 8 max: 16)");
int ioat_ring_max_alloc_order = IOAT_MAX_ORDER;
module_param(ioat_ring_max_alloc_order, int, 0644);
MODULE_PARM_DESC(ioat_ring_max_alloc_order,
"ioat+: upper limit for ring size (default: 16)");
static char ioat_interrupt_style[32] = "msix";
module_param_string(ioat_interrupt_style, ioat_interrupt_style,
sizeof(ioat_interrupt_style), 0644);
@@ -712,7 +704,7 @@ static int ioat_alloc_chan_resources(struct dma_chan *c)
writel(((u64)ioat_chan->completion_dma) >> 32,
ioat_chan->reg_base + IOAT_CHANCMP_OFFSET_HIGH);
order = ioat_get_alloc_order();
order = IOAT_MAX_ORDER;
ring = ioat_alloc_ring(c, order, GFP_KERNEL);
if (!ring)
return -ENOMEM;