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drm/i915/gvt: throw error basing on execlist submit result

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throw error message in elsp emulation handler basing on execlist
submit result. guest will trigger tdr process for recovering, gvt
just follow guest's desire.

v2: populate error to top of mmio emulation logic, comments from
zhenyu

Signed-off-by: Bing Niu <bing.niu@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
This commit is contained in:
Bing Niu 2016-10-31 17:35:12 +08:00 committed by Zhenyu Wang
parent 23736d1b1b
commit 6fb5082a8c
1 changed files with 6 additions and 3 deletions
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9
drivers/gpu/drm/i915/gvt/handlers.c
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@ -1320,7 +1320,7 @@ static int elsp_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
int ring_id = render_mmio_to_ring_id(vgpu->gvt, offset);
struct intel_vgpu_execlist *execlist;
u32 data = *(u32 *)p_data;
int ret;
int ret = 0;
if (WARN_ON(ring_id < 0 || ring_id > I915_NUM_ENGINES - 1))
return -EINVAL;
@ -1328,12 +1328,15 @@ static int elsp_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
execlist = &vgpu->execlist[ring_id];
execlist->elsp_dwords.data[execlist->elsp_dwords.index] = data;
if (execlist->elsp_dwords.index == 3)
if (execlist->elsp_dwords.index == 3) {
ret = intel_vgpu_submit_execlist(vgpu, ring_id);
if(ret)
gvt_err("fail submit workload on ring %d\n", ring_id);
}
++execlist->elsp_dwords.index;
execlist->elsp_dwords.index &= 0x3;
return 0;
return ret;
}
static int ring_mode_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,