drm/i915: dump the device info

Handy for lazy people like me, or when people forget to add the output
of lspci -nn.

v2: Chris Wilson noticed that we have this duplicated already in the
i915_capabilites debugfs file. But there \n as separator looks better,
which would be a bit verbose in dmesg. Abuse the preprocessor to
extract this all.
Reviewed-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_debugfs.c

@@ -61,28 +61,11 @@ static int i915_capabilities(struct seq_file *m, void *data)
 
 	seq_printf(m, "gen: %d\n", info->gen);
 	seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(dev));
-#define B(x) seq_printf(m, #x ": %s\n", yesno(info->x))
-	B(is_mobile);
-	B(is_i85x);
-	B(is_i915g);
-	B(is_i945gm);
-	B(is_g33);
-	B(need_gfx_hws);
-	B(is_g4x);
-	B(is_pineview);
-	B(is_broadwater);
-	B(is_crestline);
-	B(has_fbc);
-	B(has_pipe_cxsr);
-	B(has_hotplug);
-	B(cursor_needs_physical);
-	B(has_overlay);
-	B(overlay_needs_physical);
-	B(supports_tv);
-	B(has_bsd_ring);
-	B(has_blt_ring);
-	B(has_llc);
-#undef B
+#define DEV_INFO_FLAG(x) seq_printf(m, #x ": %s\n", yesno(info->x))
+#define DEV_INFO_SEP ;
+	DEV_INFO_FLAGS;
+#undef DEV_INFO_FLAG
+#undef DEV_INFO_SEP
 
 	return 0;
 }

drivers/gpu/drm/i915/i915_dma.c

@@ -1428,6 +1428,21 @@ static void i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv)
 	kfree(ap);
 }
 
+static void i915_dump_device_info(struct drm_i915_private *dev_priv)
+{
+	const struct intel_device_info *info = dev_priv->info;
+
+#define DEV_INFO_FLAG(name) info->name ? #name "," : ""
+#define DEV_INFO_SEP ,
+	DRM_DEBUG_DRIVER("i915 device info: gen=%i, pciid=0x%04x flags="
+			 "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
+			 info->gen,
+			 dev_priv->dev->pdev->device,
+			 DEV_INFO_FLAGS);
+#undef DEV_INFO_FLAG
+#undef DEV_INFO_SEP
+}
+
 /**
  * i915_driver_load - setup chip and create an initial config
  * @dev: DRM device
@@ -1452,7 +1467,6 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 	if (info->gen >= 6 && !drm_core_check_feature(dev, DRIVER_MODESET))
 		return -ENODEV;
 
-
 	/* i915 has 4 more counters */
 	dev->counters += 4;
 	dev->types[6] = _DRM_STAT_IRQ;
@@ -1468,6 +1482,8 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 	dev_priv->dev = dev;
 	dev_priv->info = info;
 
+	i915_dump_device_info(dev_priv);
+
 	if (i915_get_bridge_dev(dev)) {
 		ret = -EIO;
 		goto free_priv;

drivers/gpu/drm/i915/i915_drv.h

@@ -279,6 +279,32 @@ struct drm_i915_gt_funcs {
 	void (*force_wake_put)(struct drm_i915_private *dev_priv);
 };
 
+#define DEV_INFO_FLAGS \
+	DEV_INFO_FLAG(is_mobile) DEV_INFO_SEP \
+	DEV_INFO_FLAG(is_i85x) DEV_INFO_SEP \
+	DEV_INFO_FLAG(is_i915g) DEV_INFO_SEP \
+	DEV_INFO_FLAG(is_i945gm) DEV_INFO_SEP \
+	DEV_INFO_FLAG(is_g33) DEV_INFO_SEP \
+	DEV_INFO_FLAG(need_gfx_hws) DEV_INFO_SEP \
+	DEV_INFO_FLAG(is_g4x) DEV_INFO_SEP \
+	DEV_INFO_FLAG(is_pineview) DEV_INFO_SEP \
+	DEV_INFO_FLAG(is_broadwater) DEV_INFO_SEP \
+	DEV_INFO_FLAG(is_crestline) DEV_INFO_SEP \
+	DEV_INFO_FLAG(is_ivybridge) DEV_INFO_SEP \
+	DEV_INFO_FLAG(is_valleyview) DEV_INFO_SEP \
+	DEV_INFO_FLAG(is_haswell) DEV_INFO_SEP \
+	DEV_INFO_FLAG(has_force_wake) DEV_INFO_SEP \
+	DEV_INFO_FLAG(has_fbc) DEV_INFO_SEP \
+	DEV_INFO_FLAG(has_pipe_cxsr) DEV_INFO_SEP \
+	DEV_INFO_FLAG(has_hotplug) DEV_INFO_SEP \
+	DEV_INFO_FLAG(cursor_needs_physical) DEV_INFO_SEP \
+	DEV_INFO_FLAG(has_overlay) DEV_INFO_SEP \
+	DEV_INFO_FLAG(overlay_needs_physical) DEV_INFO_SEP \
+	DEV_INFO_FLAG(supports_tv) DEV_INFO_SEP \
+	DEV_INFO_FLAG(has_bsd_ring) DEV_INFO_SEP \
+	DEV_INFO_FLAG(has_blt_ring) DEV_INFO_SEP \
+	DEV_INFO_FLAG(has_llc)
+
 struct intel_device_info {
 	u8 gen;
 	u8 is_mobile:1;