[PATCH] drm/i915/gvt: add F_CMD_ACCESS flag for wa regs

[Yan Zhao]

Acked-by: Yan Zhao <yan.y.zhao at intel.com>

On Fri, May 31, 2019 at 03:33:48PM +0800, Weinan Li wrote:
> Instead of updating by MMIO write, all of the wa regs are initialized by
> wa_ctx. From host side, it should make this behavior as expected, add
> 'F_CMD_ACCESS' flag to these regs and allow access by commands.
> 
> [  123.557608] gvt: vgpu 2: srm access to non-render register (b11c)
> [  123.563728] gvt: vgpu 2: MI_STORE_REGISTER_MEM handler error
> [  123.569409] gvt: vgpu 2: cmd parser error
> [  123.573424] 0x0
> [  123.573425] 0x24
> 
> [  123.578686] gvt: vgpu 2: scan workload error
> [  123.582958] GVT Internal error  for the guest
> [  123.587317] Now vgpu 2 will enter failsafe mode.
> [  123.591938] gvt: vgpu 2: failed to submit desc 0
> [  123.596557] gvt: vgpu 2: fail submit workload on ring 0
> [  123.601786] gvt: vgpu 2: fail to emulate MMIO write 00002230 len 4
> 
> Signed-off-by: Weinan Li <weinan.z.li at intel.com>
> Signed-off-by: Zhenyu Wang <zhenyuw at linux.intel.com>
> ---
>  drivers/gpu/drm/i915/gvt/handlers.c | 13 +++++++------
>  1 file changed, 7 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
> index 7732caa1a546..a6ade66349bd 100644
> --- a/drivers/gpu/drm/i915/gvt/handlers.c
> +++ b/drivers/gpu/drm/i915/gvt/handlers.c
> @@ -1924,7 +1924,8 @@ static int init_generic_mmio_info(struct intel_gvt *gvt)
>  	MMIO_DFH(_MMIO(0x20dc), D_ALL, F_MODE_MASK | F_CMD_ACCESS, NULL, NULL);
>  	MMIO_DFH(_3D_CHICKEN3, D_ALL, F_MODE_MASK | F_CMD_ACCESS, NULL, NULL);
>  	MMIO_DFH(_MMIO(0x2088), D_ALL, F_MODE_MASK | F_CMD_ACCESS, NULL, NULL);
> -	MMIO_DFH(_MMIO(0x20e4), D_ALL, F_MODE_MASK | F_CMD_ACCESS, NULL, NULL);
> +	MMIO_DFH(FF_SLICE_CS_CHICKEN2, D_ALL,
> +		 F_MODE_MASK | F_CMD_ACCESS, NULL, NULL);
>  	MMIO_DFH(_MMIO(0x2470), D_ALL, F_MODE_MASK | F_CMD_ACCESS, NULL, NULL);
>  	MMIO_DFH(GAM_ECOCHK, D_ALL, F_CMD_ACCESS, NULL, NULL);
>  	MMIO_DFH(GEN7_COMMON_SLICE_CHICKEN1, D_ALL, F_MODE_MASK | F_CMD_ACCESS,
> @@ -3028,7 +3029,7 @@ static int init_skl_mmio_info(struct intel_gvt *gvt)
>  	MMIO_D(CSR_HTP_SKL, D_SKL_PLUS);
>  	MMIO_D(CSR_LAST_WRITE, D_SKL_PLUS);
>  
> -	MMIO_D(BDW_SCRATCH1, D_SKL_PLUS);
> +	MMIO_DFH(BDW_SCRATCH1, D_SKL_PLUS, F_CMD_ACCESS, NULL, NULL);
>  
>  	MMIO_D(SKL_DFSM, D_SKL_PLUS);
>  	MMIO_D(DISPIO_CR_TX_BMU_CR0, D_SKL_PLUS);
> @@ -3041,8 +3042,8 @@ static int init_skl_mmio_info(struct intel_gvt *gvt)
>  	MMIO_D(RPM_CONFIG0, D_SKL_PLUS);
>  	MMIO_D(_MMIO(0xd08), D_SKL_PLUS);
>  	MMIO_D(RC6_LOCATION, D_SKL_PLUS);
> -	MMIO_DFH(GEN7_FF_SLICE_CS_CHICKEN1, D_SKL_PLUS, F_MODE_MASK,
> -		NULL, NULL);
> +	MMIO_DFH(GEN7_FF_SLICE_CS_CHICKEN1, D_SKL_PLUS,
> +		 F_MODE_MASK | F_CMD_ACCESS, NULL, NULL);
>  	MMIO_DFH(GEN9_CS_DEBUG_MODE1, D_SKL_PLUS, F_MODE_MASK | F_CMD_ACCESS,
>  		NULL, NULL);
>  
> @@ -3061,7 +3062,7 @@ static int init_skl_mmio_info(struct intel_gvt *gvt)
>  	MMIO_D(_MMIO(0x46520), D_SKL_PLUS);
>  
>  	MMIO_D(_MMIO(0xc403c), D_SKL_PLUS);
> -	MMIO_D(_MMIO(0xb004), D_SKL_PLUS);
> +	MMIO_DFH(GEN8_GARBCNTL, D_SKL_PLUS, F_CMD_ACCESS, NULL, NULL);
>  	MMIO_DH(DMA_CTRL, D_SKL_PLUS, NULL, dma_ctrl_write);
>  
>  	MMIO_D(_MMIO(0x65900), D_SKL_PLUS);
> @@ -3273,7 +3274,7 @@ static int init_bxt_mmio_info(struct intel_gvt *gvt)
>  	MMIO_D(GEN8_PUSHBUS_ENABLE, D_BXT);
>  	MMIO_D(GEN8_PUSHBUS_SHIFT, D_BXT);
>  	MMIO_D(GEN6_GFXPAUSE, D_BXT);
> -	MMIO_D(GEN8_L3SQCREG1, D_BXT);
> +	MMIO_DFH(GEN8_L3SQCREG1, D_BXT, F_CMD_ACCESS, NULL, NULL);
>  
>  	MMIO_DFH(GEN9_CTX_PREEMPT_REG, D_BXT, F_CMD_ACCESS, NULL, NULL);
>  
> -- 
> 2.17.1
> 
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