Re: [ACS v2 1/1] clean up base on Matt Wilcox feedback.

From: Matthew Wilcox
Date: Wed Sep 16 2009 - 22:18:47 EST


On Wed, Sep 16, 2009 at 07:07:41PM -0700, Allen Kay wrote:
> +/* Access Control Service */
> +#define PCI_ACS_CAP 0x04 /* ACS Capability Register */
> +#define PCI_ACS_CTRL 0x06 /* ACS Control Register */
> +#define PCI_ACS_EGRESS_CTL_V 0x08 /* ACS Egress Control Vector */
> +#define PCI_ACS_SV 0x01 /* Source Validation */
> +#define PCI_ACS_TB 0x02 /* Translation Blocking */
> +#define PCI_ACS_RR 0x04 /* P2P Request Redirect */
> +#define PCI_ACS_CR 0x08 /* P2P Completion Redirect */
> +#define PCI_ACS_UF 0x10 /* Upstream Forwarding */
> +#define PCI_ACS_EC 0x20 /* P2P Egress Control */
> +#define PCI_ACS_DT 0x40 /* Direct Translated P2P */

Oops, I wasn't clear. The convention in this file is to use one space
after the #define for register names and two spaces for bits within
those registers. Also, the bits generally go after the register to
which they apply.

So what I meant was more like this:

#define PCI_ACS_CAP 0x04 /* ACS Capability Register */
#define PCI_ACS_SV 0x01 /* Source Validation */
#define PCI_ACS_TB 0x02 /* Translation Blocking */
#define PCI_ACS_RR 0x04 /* P2P Request Redirect */
...
#define PCI_ACS_CTRL 0x06 /* ACS Control Register */
#define PCI_ACS_EGRESS_CTL_V 0x08 /* ACS Egress Control Vector */

Since the bits are the same between CAP and CTRL, they don't need to
be repeated.

With this change,

Reviewed-by: Matthew Wilcox <willy@xxxxxxxxxxxxxxx>

--
Matthew Wilcox Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours. We can't possibly take such
a retrograde step."
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