drm/i915/gvt: Make WARN* drm specific where drm_priv ptr is available

drm specific WARN* calls include device information in the
backtrace, so we know what device the warnings originate from.

Covert all the calls of WARN* with device specific drm_WARN*
variants in functions where drm_i915_private struct pointer is
readily available.

The conversion was done automatically with below coccinelle semantic
patch. checkpatch errors/warnings are fixed manually.

@rule1@
identifier func, T;
@@
func(...) {
...
struct drm_i915_private *T = ...;
<+...
(
-WARN(
+drm_WARN(&T->drm,
...)
|
-WARN_ON(
+drm_WARN_ON(&T->drm,
...)
|
-WARN_ONCE(
+drm_WARN_ONCE(&T->drm,
...)
|
-WARN_ON_ONCE(
+drm_WARN_ON_ONCE(&T->drm,
...)
)
...+>
}

@rule2@
identifier func, T;
@@
func(struct drm_i915_private *T,...) {
<+...
(
-WARN(
+drm_WARN(&T->drm,
...)
|
-WARN_ON(
+drm_WARN_ON(&T->drm,
...)
|
-WARN_ONCE(
+drm_WARN_ONCE(&T->drm,
...)
|
-WARN_ON_ONCE(
+drm_WARN_ON_ONCE(&T->drm,
...)
)
...+>
}

Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com>
Acked-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20200220165507.16823-8-pankaj.laxminarayan.bharadiya@intel.com

drivers/gpu/drm/i915/gvt/aperture_gm.c

@@ -134,11 +134,11 @@ void intel_vgpu_write_fence(struct intel_vgpu *vgpu,
 
 	assert_rpm_wakelock_held(&dev_priv->runtime_pm);
 
-	if (WARN_ON(fence >= vgpu_fence_sz(vgpu)))
+	if (drm_WARN_ON(&dev_priv->drm, fence >= vgpu_fence_sz(vgpu)))
 		return;
 
 	reg = vgpu->fence.regs[fence];
-	if (WARN_ON(!reg))
+	if (drm_WARN_ON(&dev_priv->drm, !reg))
 		return;
 
 	fence_reg_lo = FENCE_REG_GEN6_LO(reg->id);
@@ -167,7 +167,7 @@ static void free_vgpu_fence(struct intel_vgpu *vgpu)
 	struct i915_fence_reg *reg;
 	u32 i;
 
-	if (WARN_ON(!vgpu_fence_sz(vgpu)))
+	if (drm_WARN_ON(&dev_priv->drm, !vgpu_fence_sz(vgpu)))
 		return;
 
 	intel_runtime_pm_get(&dev_priv->runtime_pm);

drivers/gpu/drm/i915/gvt/cmd_parser.c

@@ -1230,7 +1230,7 @@ static int gen8_decode_mi_display_flip(struct parser_exec_state *s,
 	dword2 = cmd_val(s, 2);
 
 	v = (dword0 & GENMASK(21, 19)) >> 19;
-	if (WARN_ON(v >= ARRAY_SIZE(gen8_plane_code)))
+	if (drm_WARN_ON(&dev_priv->drm, v >= ARRAY_SIZE(gen8_plane_code)))
 		return -EBADRQC;
 
 	info->pipe = gen8_plane_code[v].pipe;
@@ -1250,7 +1250,7 @@ static int gen8_decode_mi_display_flip(struct parser_exec_state *s,
 		info->stride_reg = SPRSTRIDE(info->pipe);
 		info->surf_reg = SPRSURF(info->pipe);
 	} else {
-		WARN_ON(1);
+		drm_WARN_ON(&dev_priv->drm, 1);
 		return -EBADRQC;
 	}
 	return 0;

drivers/gpu/drm/i915/gvt/display.c

@@ -71,7 +71,8 @@ int pipe_is_enabled(struct intel_vgpu *vgpu, int pipe)
 {
 	struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
 
-	if (WARN_ON(pipe < PIPE_A || pipe >= I915_MAX_PIPES))
+	if (drm_WARN_ON(&dev_priv->drm,
+			pipe < PIPE_A || pipe >= I915_MAX_PIPES))
 		return -EINVAL;
 
 	if (vgpu_vreg_t(vgpu, PIPECONF(pipe)) & PIPECONF_ENABLE)

drivers/gpu/drm/i915/gvt/dmabuf.c

@@ -67,11 +67,11 @@ static int vgpu_gem_get_pages(
 	u32 page_num;
 
 	fb_info = (struct intel_vgpu_fb_info *)obj->gvt_info;
-	if (WARN_ON(!fb_info))
+	if (drm_WARN_ON(&dev_priv->drm, !fb_info))
 		return -ENODEV;
 
 	vgpu = fb_info->obj->vgpu;
-	if (WARN_ON(!vgpu))
+	if (drm_WARN_ON(&dev_priv->drm, !vgpu))
 		return -ENODEV;
 
 	st = kmalloc(sizeof(*st), GFP_KERNEL);

drivers/gpu/drm/i915/gvt/edid.c

@@ -153,7 +153,7 @@ static int gmbus0_mmio_write(struct intel_vgpu *vgpu,
 		port = cnp_get_port_from_gmbus0(pin_select);
 	else
 		port = get_port_from_gmbus0(pin_select);
-	if (WARN_ON(port < 0))
+	if (drm_WARN_ON(&dev_priv->drm, port < 0))
 		return 0;
 
 	vgpu->display.i2c_edid.state = I2C_GMBUS;

drivers/gpu/drm/i915/gvt/gvt.c

@@ -265,7 +265,7 @@ void intel_gvt_clean_device(struct drm_i915_private *dev_priv)
 {
 	struct intel_gvt *gvt = to_gvt(dev_priv);
 
-	if (WARN_ON(!gvt))
+	if (drm_WARN_ON(&dev_priv->drm, !gvt))
 		return;
 
 	intel_gvt_destroy_idle_vgpu(gvt->idle_vgpu);
@@ -304,7 +304,7 @@ int intel_gvt_init_device(struct drm_i915_private *dev_priv)
 	struct intel_vgpu *vgpu;
 	int ret;
 
-	if (WARN_ON(dev_priv->gvt))
+	if (drm_WARN_ON(&dev_priv->drm, dev_priv->gvt))
 		return -EEXIST;
 
 	gvt = kzalloc(sizeof(struct intel_gvt), GFP_KERNEL);

drivers/gpu/drm/i915/gvt/handlers.c

@@ -836,7 +836,7 @@ static int trigger_aux_channel_interrupt(struct intel_vgpu *vgpu,
 		 reg == i915_mmio_reg_offset(DP_AUX_CH_CTL(AUX_CH_D)))
 		event = AUX_CHANNEL_D;
 	else {
-		WARN_ON(true);
+		drm_WARN_ON(&dev_priv->drm, true);
 		return -EINVAL;
 	}
 

drivers/gpu/drm/i915/gvt/mmio_context.c

@@ -357,7 +357,7 @@ static void handle_tlb_pending_event(struct intel_vgpu *vgpu, int ring_id)
 	if (!regs)
 		return;
 
-	if (WARN_ON(ring_id >= cnt))
+	if (drm_WARN_ON(&dev_priv->drm, ring_id >= cnt))
 		return;
 
 	if (!test_and_clear_bit(ring_id, (void *)s->tlb_handle_pending))