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drm/i915/gvt: Refine non privilege register address calucation

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The BitField of non privilege register address is only from bit 2 to 25.

v2: use REG_GENMASK instead. (Zhenyu)

Signed-off-by: Gao, Fred <fred.gao@intel.com>
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
This commit is contained in:
Gao, Fred 2019-11-27 00:07:35 +08:00 committed by Zhenyu Wang
parent 83faaf074e
commit aeab9eda04
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/gvt/handlers.c
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@ -508,7 +508,7 @@ static inline bool in_whitelist(unsigned int reg)
static int force_nonpriv_write(struct intel_vgpu *vgpu, static int force_nonpriv_write(struct intel_vgpu *vgpu,
unsigned int offset, void *p_data, unsigned int bytes) unsigned int offset, void *p_data, unsigned int bytes)
{ {
u32 reg_nonpriv = *(u32 *)p_data; u32 reg_nonpriv = (*(u32 *)p_data) & REG_GENMASK(25, 2);
int ring_id = intel_gvt_render_mmio_to_ring_id(vgpu->gvt, offset); int ring_id = intel_gvt_render_mmio_to_ring_id(vgpu->gvt, offset);
u32 ring_base; u32 ring_base;
struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv; struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
@ -528,7 +528,7 @@ static int force_nonpriv_write(struct intel_vgpu *vgpu,
bytes); bytes);
} else } else
gvt_err("vgpu(%d) Invalid FORCE_NONPRIV write %x at offset %x\n", gvt_err("vgpu(%d) Invalid FORCE_NONPRIV write %x at offset %x\n",
vgpu->id, reg_nonpriv, offset); vgpu->id, *(u32 *)p_data, offset);
return 0; return 0;
} }