drm/i915/gvt: Allow F_CMD_ACCESS on mmio 0x21f0

coxuintel · zhenyw · commit ba0a64bcf8fc · 2019-01-14T12:33:28.000+08:00
The newly updated guest driver could program 0x21f0 via lri and srm,
without F_CMD_ACCESS flag cmd parser will stop parser reset cmd.
0x21f0 applies to BDW, SKL, KBL, BXT and CFL.

Reviewed-by: Yan Zhao &lt;yan.y.zhao@intel.com&gt;
Signed-off-by: Colin Xu &lt;colin.xu@intel.com&gt;
Signed-off-by: Zhenyu Wang &lt;zhenyuw@linux.intel.com&gt;
diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
@@ -2799,6 +2799,7 @@ static int init_broadwell_mmio_info(struct intel_gvt *gvt)
 	MMIO_DFH(_MMIO(0xe2a0), D_BDW_PLUS, F_CMD_ACCESS, NULL, NULL);
 	MMIO_DFH(_MMIO(0xe2b0), D_BDW_PLUS, F_CMD_ACCESS, NULL, NULL);
 	MMIO_DFH(_MMIO(0xe2c0), D_BDW_PLUS, F_CMD_ACCESS, NULL, NULL);
+	MMIO_DFH(_MMIO(0x21f0), D_BDW_PLUS, F_CMD_ACCESS, NULL, NULL);
 	return 0;
 }
 

Original file line number	Diff line number	Diff line change
`@@ -2799,6 +2799,7 @@ static int init_broadwell_mmio_info(struct intel_gvt *gvt)`
`2799`	`2799`	`MMIO_DFH(_MMIO(0xe2a0), D_BDW_PLUS, F_CMD_ACCESS, NULL, NULL);`
`2800`	`2800`	`MMIO_DFH(_MMIO(0xe2b0), D_BDW_PLUS, F_CMD_ACCESS, NULL, NULL);`
`2801`	`2801`	`MMIO_DFH(_MMIO(0xe2c0), D_BDW_PLUS, F_CMD_ACCESS, NULL, NULL);`
	`2802`	`+ MMIO_DFH(_MMIO(0x21f0), D_BDW_PLUS, F_CMD_ACCESS, NULL, NULL);`
`2802`	`2803`	`return 0;`
`2803`	`2804`	`}`
`2804`	`2805`