On Fri, Aug 15, 2014 at 09:55:51AM +0800, Li, Zhen-Hua wrote:
> According to intel's spec
> Intel® Virtualization Technology for Directed I/O,
> Revision: 1.3 , February 2011,
> Chaper 10.4.25 to 10.4.28
>
> There are four registers
>
> IECTL_REG 0xa0 Invalidation event control register
> IEDATA_REG 0xa4 Invalidation event data register
> IEADDR_REG 0xa8 Invalidation event address register
> IEUADDR_REG 0xac Invalidation event upper address register
>
> Through they are not used in kernel in the latest version, the defination
> should be added to kernel as well as other registers.
>
> Signed-off-by: Li, Zhen-Hua <zhen-h...@hp.com>
> ---
> include/linux/intel-iommu.h | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
> index a65208a..15fafd5 100644
> --- a/include/linux/intel-iommu.h
> +++ b/include/linux/intel-iommu.h
> @@ -56,6 +56,10 @@
> #define DMAR_IQ_SHIFT 4 /* Invalidation queue head/tail shift */
> #define DMAR_IQA_REG 0x90 /* Invalidation queue addr register */
> #define DMAR_ICS_REG 0x9c /* Invalidation complete status register */
> +#define DMAR_IECTL_REG 0xa0 /* Invalidation event control register
> */
> +#define DMAR_IEDATA_REG 0xa4 /* Invalidation event data register */
> +#define DMAR_IEADDR_REG 0xa8 /* Invalidation event address register
> */
> +#define DMAR_IEUADDR_REG 0xac /* Invalidation event upper address
> register */
> #define DMAR_IRTA_REG 0xb8 /* Interrupt remapping table addr
> register */
>
> #define OFFSET_STRIDE (9)
There is no point in adding register defines that are not used anywhere.
Joerg
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
