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SubjectRe: [patch 2.5] pci_{save,restore}_extended_state
On Fri, Jan 24, 2003 at 09:24:03PM +0300, Ivan Kokshaysky wrote:
> pci.h: added missing SIZEOFs for each capability as per PCI specs.
> I'm not 100% sure about PCI_CHSWP_SIZEOF and PCI_X_SIZEOF - somebody
> with respective specs in hands (Matthew?) ought to verify this...

PCI-X is 8 bytes -- ID, Next capability, 2-byte `Command', 4-byte `Status'

Except PCI-X bridges, which are 16-bytes long. And I didn't write down the
definition for those.

Hotswap uses only 3 bytes, but the 4th byte is `reserved' so better save
4 bytes rather than 3.

> #define PCI_CHSWP_PI 0x30 /* Programming Interface */
> #define PCI_CHSWP_EXT 0x40 /* ENUM# status - extraction */
> #define PCI_CHSWP_INS 0x80 /* ENUM# status - insertion */
> +#define PCI_CHSWP_SIZEOF 4
>
> /* PCI-X registers */
>
> @@ -309,6 +314,7 @@
> #define PCI_X_STATUS_MAX_SPLIT 0x0380 /* Design Max Outstanding Split Trans */
> #define PCI_X_STATUS_MAX_CUM 0x1c00 /* Designed Max Cumulative Read Size */
> #define PCI_X_STATUS_SPL_ERR 0x2000 /* Rcvd Split Completion Error Msg */
> +#define PCI_X_SIZEOF 9
>
> /* Include the ID list */
>

--
"It's not Hollywood. War is real, war is primarily not about defeat or
victory, it is about death. I've seen thousands and thousands of dead bodies.
Do you think I want to have an academic debate on this subject?" -- Robert Fisk
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