[PATCH/V2] drm/i915/gvt: add write handler for mmio mbctl
Zhenyu Wang
zhenyuw at linux.intel.com
Mon Mar 20 08:42:53 UTC 2017
On 2017.03.20 23:49:19 +0800, Pei Zhang wrote:
> Guest will write mmio mbctl which need a special handler in gvt to
> clear the bit 4 to inidcate the write operation success.
>
> V2: use bit definition macro to make code readable.
>
> Signed-off-by: Pei Zhang <pei.zhang at intel.com>
> Reviewd-by: Zhenyu Wang<zhenyuw at linux.intel.com>
> ---
pls don't add Reviewed-by for others except by yourself.
applied to -fixes, thanks!
> drivers/gpu/drm/i915/gvt/handlers.c | 10 +++++++++-
> 1 file changed, 9 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
> index 37ac507..a63b2e6 100644
> --- a/drivers/gpu/drm/i915/gvt/handlers.c
> +++ b/drivers/gpu/drm/i915/gvt/handlers.c
> @@ -971,6 +971,14 @@ static int dp_aux_ch_ctl_mmio_write(struct intel_vgpu *vgpu,
> return 0;
> }
>
> +static int mbctl_write(struct intel_vgpu *vgpu, unsigned int offset,
> + void *p_data, unsigned int bytes)
> +{
> + *(u32 *)p_data &= (~GEN6_MBCTL_ENABLE_BOOT_FETCH);
> + write_vreg(vgpu, offset, p_data, bytes);
> + return 0;
> +}
> +
> static int vga_control_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
> void *p_data, unsigned int bytes)
> {
> @@ -2224,7 +2232,7 @@ static int init_generic_mmio_info(struct intel_gvt *gvt)
> MMIO_D(0x7180, D_ALL);
> MMIO_D(0x7408, D_ALL);
> MMIO_D(0x7c00, D_ALL);
> - MMIO_D(GEN6_MBCTL, D_ALL);
> + MMIO_DH(GEN6_MBCTL, D_ALL, NULL, mbctl_write);
> MMIO_D(0x911c, D_ALL);
> MMIO_D(0x9120, D_ALL);
> MMIO_DFH(GEN7_UCGCTL4, D_ALL, F_CMD_ACCESS, NULL, NULL);
> --
> 2.7.4
>
> _______________________________________________
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> intel-gvt-dev at lists.freedesktop.org
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--
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