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drm/i915/gvt: Deliver guest cursor hotspot info

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Guest OS driver uses PV info registers to deliver cursor hotspot info
to host. This patch is used to get cursor hotspot info from virtual
registers and deliver it to host userspace.

v4->v5:
- remove CI warning.

v3->v4:
- return UINT_MAX when x_hot/y_hot is invalid. (Zhenyu)
- correct version.

v2->v3:
- add validate_hotspot(). (Zhenyu)

v1->v2:
- name as cursor_x_hot/cursor_y_hot. (Zhenyu)
- use i915_reg_t definition instead of magic numbers. (Zhenyu)

Signed-off-by: Tina Zhang <tina.zhang@intel.com>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Zhi Wang <zhi.a.wang@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
This commit is contained in:
Tina Zhang
2018-05-14 13:59:18 +08:00
committed by Zhenyu Wang
parent 41e403d04e
commit 1c6ccad8a4
5 changed files with 28 additions and 9 deletions
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4
drivers/gpu/drm/i915/gvt/handlers.c
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@@ -1204,8 +1204,8 @@ static int pvinfo_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
ret = handle_g2v_notification(vgpu, data);
break;
/* add xhot and yhot to handled list to avoid error log */
case 0x78830:
case 0x78834:
case _vgtif_reg(cursor_x_hot):
case _vgtif_reg(cursor_y_hot):
case _vgtif_reg(pdp[0].lo):
case _vgtif_reg(pdp[0].hi):
case _vgtif_reg(pdp[1].lo):