drm/nv50-/disp: audit and version DAC_PWR method

The full object interfaces are about to be exposed to userspace, so we
need to check for any security-related issues and version the structs
to make it easier to handle any changes we may need in the future.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 43 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvif/class.h b/drivers/gpu/drm/nouveau/nvif/class.h
index 50c5413ff523..9681a102970d 100644
--- a/drivers/gpu/drm/nouveau/nvif/class.h
+++ b/drivers/gpu/drm/nouveau/nvif/class.h
@@ -290,4 +290,47 @@ struct kepler_channel_gpfifo_a_v0 {
         __u64 ioffset;
 };
 
+/*******************************************************************************
+ * legacy display
+ ******************************************************************************/
+
+
+/*******************************************************************************
+ * display
+ ******************************************************************************/
+
+#define NV50_DISP_MTHD                                                     0x00
+
+struct nv50_disp_mthd_v0 {
+        __u8  version;
+        __u8  method;
+        __u8  head;
+        __u8  pad03[5];
+};
+
+struct nv50_disp_mthd_v1 {
+        __u8  version;
+#define NV50_DISP_MTHD_V1_DAC_PWR                                          0x10
+#define NV50_DISP_MTHD_V1_DAC_LOAD                                         0x11
+#define NV50_DISP_MTHD_V1_SOR_PWR                                          0x20
+#define NV50_DISP_MTHD_V1_SOR_HDA_ELD                                      0x21
+#define NV50_DISP_MTHD_V1_SOR_HDMI_PWR                                     0x22
+#define NV50_DISP_MTHD_V1_SOR_LVDS_SCRIPT                                  0x23
+#define NV50_DISP_MTHD_V1_SOR_DP_PWR                                       0x24
+#define NV50_DISP_MTHD_V1_PIOR_PWR                                         0x30
+        __u8  method;
+        __u16 hasht;
+        __u16 hashm;
+        __u8  pad06[2];
+};
+
+struct nv50_disp_dac_pwr_v0 {
+        __u8  version;
+        __u8  state;
+        __u8  data;
+        __u8  vsync;
+        __u8  hsync;
+        __u8  pad05[3];
+};
+
 #endif