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ioat: add 'ioat' sysfs attributes

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Export driver attributes for diagnostic purposes:
'ring_size': total number of descriptors available to the engine
'ring_active': number of descriptors in-flight
'capabilities': supported operation types for this channel
'version': Intel(R) QuickData specfication revision

This also allows some chattiness to be removed from the driver startup
as this information is now available via sysfs.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams
2009-09-08 17:42:56 -07:00
parent bf40a6869c
commit 5669e31c5a
6 changed files with 166 additions and 6 deletions
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drivers/dma/ioat/dma_v3.c
+3
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@@ -360,6 +360,9 @@ int __devinit ioat3_dma_probe(struct ioatdma_device *device, int dca)
err = ioat_register(device);
if (err)
return err;
ioat_kobject_add(device, &ioat2_ktype);
if (dca)
device->dca = ioat3_dca_init(pdev, device->reg_base);