drm/nouveau/disp/g84-: Extend NVKM HDMI power control method to set InfoFrames

The nouveau driver, in the Linux 3.7 days, used to try and set the
AVI InfoFrame based on the selected display mode.  These days, it
uses a fixed set of InfoFrames.  Start to correct that, by
providing a mechanism whereby InfoFrame data may be passed to the
NVKM functions that do the actual configuration.

At this point, only establish the new parameters and their parsing,
don't actually use the data anywhere yet (since it's not supplied
anywhere).
Signed-off-by: Alastair Bridgewater <alastair.bridgewater@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/include/nvif/cl5070.h

@@ -76,7 +76,9 @@ struct nv50_disp_sor_hdmi_pwr_v0 {
 	__u8  state;
 	__u8  max_ac_packet;
 	__u8  rekey;
-	__u8  pad04[4];
+	__u8  avi_infoframe_length;
+	__u8  vendor_infoframe_length;
+	__u8  pad06[2];
 };
 
 struct nv50_disp_sor_lvds_script_v0 {

drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmig84.c

@@ -40,7 +40,7 @@ g84_hdmi_ctrl(NV50_DISP_MTHD_V1)
 	int ret = -ENOSYS;
 
 	nvif_ioctl(object, "disp sor hdmi ctrl size %d\n", size);
-	if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
+	if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
 		nvif_ioctl(object, "disp sor hdmi ctrl vers %d state %d "
 				   "max_ac_packet %d rekey %d\n",
 			   args->v0.version, args->v0.state,
@@ -54,6 +54,13 @@ g84_hdmi_ctrl(NV50_DISP_MTHD_V1)
 	} else
 		return ret;
 
+	if ((args->v0.avi_infoframe_length
+	     + args->v0.vendor_infoframe_length) > size)
+		return -ENOSYS;
+	else if ((args->v0.avi_infoframe_length
+		    + args->v0.vendor_infoframe_length) < size)
+		return -E2BIG;
+
 	if (!(ctrl & 0x40000000)) {
 		nvkm_mask(device, 0x6165a4 + hoff, 0x40000000, 0x00000000);
 		nvkm_mask(device, 0x616520 + hoff, 0x00000001, 0x00000000);

drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmigf119.c

@@ -40,7 +40,7 @@ gf119_hdmi_ctrl(NV50_DISP_MTHD_V1)
 	int ret = -ENOSYS;
 
 	nvif_ioctl(object, "disp sor hdmi ctrl size %d\n", size);
-	if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
+	if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
 		nvif_ioctl(object, "disp sor hdmi ctrl vers %d state %d "
 				   "max_ac_packet %d rekey %d\n",
 			   args->v0.version, args->v0.state,
@@ -53,6 +53,13 @@ gf119_hdmi_ctrl(NV50_DISP_MTHD_V1)
 	} else
 		return ret;
 
+	if ((args->v0.avi_infoframe_length
+	     + args->v0.vendor_infoframe_length) > size)
+		return -ENOSYS;
+	else if ((args->v0.avi_infoframe_length
+		    + args->v0.vendor_infoframe_length) < size)
+		return -E2BIG;
+
 	if (!(ctrl & 0x40000000)) {
 		nvkm_mask(device, 0x616798 + hoff, 0x40000000, 0x00000000);
 		nvkm_mask(device, 0x6167a4 + hoff, 0x00000001, 0x00000000);

drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmigk104.c

@@ -41,7 +41,7 @@ gk104_hdmi_ctrl(NV50_DISP_MTHD_V1)
 	int ret = -ENOSYS;
 
 	nvif_ioctl(object, "disp sor hdmi ctrl size %d\n", size);
-	if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
+	if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
 		nvif_ioctl(object, "disp sor hdmi ctrl vers %d state %d "
 				   "max_ac_packet %d rekey %d\n",
 			   args->v0.version, args->v0.state,
@@ -54,6 +54,13 @@ gk104_hdmi_ctrl(NV50_DISP_MTHD_V1)
 	} else
 		return ret;
 
+	if ((args->v0.avi_infoframe_length
+	     + args->v0.vendor_infoframe_length) > size)
+		return -ENOSYS;
+	else if ((args->v0.avi_infoframe_length
+		    + args->v0.vendor_infoframe_length) < size)
+		return -E2BIG;
+
 	if (!(ctrl & 0x40000000)) {
 		nvkm_mask(device, 0x616798 + hoff, 0x40000000, 0x00000000);
 		nvkm_mask(device, 0x6900c0 + hdmi, 0x00000001, 0x00000000);

drivers/gpu/drm/nouveau/nvkm/engine/disp/hdmigt215.c

@@ -41,7 +41,7 @@ gt215_hdmi_ctrl(NV50_DISP_MTHD_V1)
 	int ret = -ENOSYS;
 
 	nvif_ioctl(object, "disp sor hdmi ctrl size %d\n", size);
-	if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
+	if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
 		nvif_ioctl(object, "disp sor hdmi ctrl vers %d state %d "
 				   "max_ac_packet %d rekey %d\n",
 			   args->v0.version, args->v0.state,
@@ -55,6 +55,13 @@ gt215_hdmi_ctrl(NV50_DISP_MTHD_V1)
 	} else
 		return ret;
 
+	if ((args->v0.avi_infoframe_length
+	     + args->v0.vendor_infoframe_length) > size)
+		return -ENOSYS;
+	else if ((args->v0.avi_infoframe_length
+		    + args->v0.vendor_infoframe_length) < size)
+		return -E2BIG;
+
 	if (!(ctrl & 0x40000000)) {
 		nvkm_mask(device, 0x61c5a4 + soff, 0x40000000, 0x00000000);
 		nvkm_mask(device, 0x61c520 + soff, 0x00000001, 0x00000000);