[Intel-gfx] [PATCH 5/7] drm/i915: Update PV INFO page definition for Intel GVT-g

[Joonas Lahtinen]

On to, 2015-08-20 at 15:45 +0800, Zhiyuan Lv wrote:
> Some more definitions in the PV info page are added. They are mainly
> for the guest notification to Intel GVT-g device model. They are used
> for Broadwell enabling.
> 
> Signed-off-by: Zhiyuan Lv <zhiyuan.lv at intel.com>
> Signed-off-by: Zhi Wang <zhi.a.wang at intel.com>
> 

Reviewed-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>

Is there any public document about the interface?

> ---
>  drivers/gpu/drm/i915/i915_vgpu.h | 34 
> ++++++++++++++++++++++++++++++++--
>  1 file changed, 32 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_vgpu.h 
> b/drivers/gpu/drm/i915/i915_vgpu.h
> index 97a88b5..21c97f4 100644
> --- a/drivers/gpu/drm/i915/i915_vgpu.h
> +++ b/drivers/gpu/drm/i915/i915_vgpu.h
> @@ -40,6 +40,19 @@
>  #define INTEL_VGT_IF_VERSION \
>  	INTEL_VGT_IF_VERSION_ENCODE(VGT_VERSION_MAJOR, 
> VGT_VERSION_MINOR)
>  
> +/*
> + * notifications from guest to vgpu device model
> + */
> +enum vgt_g2v_type {
> +	VGT_G2V_PPGTT_L3_PAGE_TABLE_CREATE = 2,
> +	VGT_G2V_PPGTT_L3_PAGE_TABLE_DESTROY,
> +	VGT_G2V_PPGTT_L4_PAGE_TABLE_CREATE,
> +	VGT_G2V_PPGTT_L4_PAGE_TABLE_DESTROY,
> +	VGT_G2V_EXECLIST_CONTEXT_CREATE,
> +	VGT_G2V_EXECLIST_CONTEXT_DESTROY,
> +	VGT_G2V_MAX,
> +};
> +
>  struct vgt_if {
>  	uint64_t magic;		/* VGT_MAGIC */
>  	uint16_t version_major;
> @@ -70,11 +83,28 @@ struct vgt_if {
>  	uint32_t rsv3[0x200 - 24];	/* pad to half page */
>  	/*
>  	 * The bottom half page is for response from Gfx driver to 
> hypervisor.
> -	 * Set to reserved fields temporarily by now.
>  	 */
>  	uint32_t rsv4;
>  	uint32_t display_ready;	/* ready for display owner 
> switch */
> -	uint32_t rsv5[0x200 - 2];	/* pad to one page */
> +
> +	uint32_t rsv5[4];
> +
> +	uint32_t g2v_notify;
> +	uint32_t rsv6[7];
> +
> +	uint32_t pdp0_lo;
> +	uint32_t pdp0_hi;
> +	uint32_t pdp1_lo;
> +	uint32_t pdp1_hi;
> +	uint32_t pdp2_lo;
> +	uint32_t pdp2_hi;
> +	uint32_t pdp3_lo;
> +	uint32_t pdp3_hi;
> +
> +	uint32_t execlist_context_descriptor_lo;
> +	uint32_t execlist_context_descriptor_hi;
> +
> +	uint32_t  rsv7[0x200 - 24];    /* pad to one page */
>  } __packed;
>  
>  #define vgtif_reg(x) \