radv: Add KHR_display extension to radv [v5]

This adds support for the KHR_display extension to the radv Vulkan
driver. The driver now attempts to open the master DRM node when the
KHR_display extension is requested so that the common winsys code can
perform the necessary operations.

v2:
	* Simplify addition of VK_USE_PLATFORM_DISPLAY_KHR to
          vulkan_wsi_args

	Suggested-by: Eric Engestrom <eric.engestrom@imgtec.com>

v3:
	Adapt to new wsi_device_init API (added display_fd)

v4:
	Adopt Jason Ekstrand's coding conventions

	Declare variables at first use, eliminate extra whitespace
	between types and names. Wrap lines to 80 columns.

	Suggested-by: Jason Ekstrand <jason.ekstrand@intel.com>

v5:
	Add vkCreateDisplayModeKHR. This doesn't actually create
	new modes, it only looks to see if the requested parameters
	matches an existing mode and returns that.

    	Suggested-by: Jason Ekstrand <jason.ekstrand@intel.com>

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

src/amd/vulkan/Makefile.am

@@ -80,6 +80,14 @@ VULKAN_LIB_DEPS = \
 	$(DLOPEN_LIBS) \
 	-lm
 
+if HAVE_PLATFORM_DRM
+AM_CPPFLAGS += \
+	-DVK_USE_PLATFORM_DISPLAY_KHR
+
+VULKAN_SOURCES += $(VULKAN_WSI_DISPLAY_FILES)
+
+endif
+
 if HAVE_PLATFORM_X11
 AM_CPPFLAGS += \
 	$(XCB_DRI3_CFLAGS) \

src/amd/vulkan/Makefile.sources

@@ -80,6 +80,9 @@ VULKAN_WSI_WAYLAND_FILES := \
 VULKAN_WSI_X11_FILES := \
 	radv_wsi_x11.c
 
+VULKAN_WSI_DISPLAY_FILES := \
+	radv_wsi_display.c
+
 VULKAN_GENERATED_FILES := \
 	radv_entrypoints.c \
 	radv_entrypoints.h \

src/amd/vulkan/meson.build

@@ -115,6 +115,11 @@ if with_platform_wayland
   libradv_files += files('radv_wsi_wayland.c')
 endif
 
+if with_platform_drm
+  radv_flags += '-DVK_USE_PLATFORM_DISPLAY_KHR'
+  libradv_files += files('radv_wsi_display.c')
+endif
+
 libvulkan_radeon = shared_library(
   'vulkan_radeon',
   [libradv_files, radv_entrypoints, radv_extensions_c, vk_format_table_c],

src/amd/vulkan/radv_device.c

@@ -274,6 +274,23 @@ radv_physical_device_init(struct radv_physical_device *device,
 		goto fail;
 	}
 
+	if (instance->enabled_extensions.KHR_display) {
+		master_fd = open(drm_device->nodes[DRM_NODE_PRIMARY], O_RDWR | O_CLOEXEC);
+		if (master_fd >= 0) {
+			uint32_t accel_working = 0;
+			struct drm_amdgpu_info request = {
+				.return_pointer = (uintptr_t)&accel_working,
+				.return_size = sizeof(accel_working),
+				.query = AMDGPU_INFO_ACCEL_WORKING
+			};
+
+			if (drmCommandWrite(master_fd, DRM_AMDGPU_INFO, &request, sizeof (struct drm_amdgpu_info)) < 0 || !accel_working) {
+				close(master_fd);
+				master_fd = -1;
+			}
+		}
+	}
+
 	device->master_fd = master_fd;
 	device->local_fd = fd;
 	device->ws->query_info(device->ws, &device->rad_info);

src/amd/vulkan/radv_extensions.py

@@ -86,6 +86,7 @@ EXTENSIONS = [
     Extension('VK_KHR_xcb_surface',                       6, 'VK_USE_PLATFORM_XCB_KHR'),
     Extension('VK_KHR_xlib_surface',                      6, 'VK_USE_PLATFORM_XLIB_KHR'),
     Extension('VK_KHR_multiview',                         1, True),
+    Extension('VK_KHR_display',                          23, 'VK_USE_PLATFORM_DISPLAY_KHR'),
     Extension('VK_EXT_debug_report',                      9, True),
     Extension('VK_EXT_depth_range_unrestricted',          1, True),
     Extension('VK_EXT_descriptor_indexing',               2, True),
@@ -214,7 +215,7 @@ _TEMPLATE_C = Template(COPYRIGHT + """
 #include "vk_util.h"
 
 /* Convert the VK_USE_PLATFORM_* defines to booleans */
-%for platform in ['ANDROID', 'WAYLAND', 'XCB', 'XLIB']:
+%for platform in ['ANDROID', 'WAYLAND', 'XCB', 'XLIB', 'DISPLAY']:
 #ifdef VK_USE_PLATFORM_${platform}_KHR
 #   undef VK_USE_PLATFORM_${platform}_KHR
 #   define VK_USE_PLATFORM_${platform}_KHR true
@@ -233,7 +234,9 @@ _TEMPLATE_C = Template(COPYRIGHT + """
 
 #define RADV_HAS_SURFACE (VK_USE_PLATFORM_WAYLAND_KHR || \\
                          VK_USE_PLATFORM_XCB_KHR || \\
-                         VK_USE_PLATFORM_XLIB_KHR)
+                         VK_USE_PLATFORM_XLIB_KHR || \\
+                         VK_USE_PLATFORM_DISPLAY_KHR)
+
 
 const VkExtensionProperties radv_instance_extensions[RADV_INSTANCE_EXTENSION_COUNT] = {
 %for ext in instance_extensions:

src/amd/vulkan/radv_private.h

@@ -79,6 +79,7 @@ typedef uint32_t xcb_window_t;
 #include "radv_entrypoints.h"
 
 #include "wsi_common.h"
+#include "wsi_common_display.h"
 
 #define ATI_VENDOR_ID 0x1002
 

src/amd/vulkan/radv_wsi_display.c

@@ -0,0 +1,155 @@
+/*
+ * Copyright © 2017 Keith Packard
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include <stdbool.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include "radv_private.h"
+#include "radv_cs.h"
+#include "util/disk_cache.h"
+#include "util/strtod.h"
+#include "vk_util.h"
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+#include <amdgpu.h>
+#include <amdgpu_drm.h>
+#include "winsys/amdgpu/radv_amdgpu_winsys_public.h"
+#include "ac_llvm_util.h"
+#include "vk_format.h"
+#include "sid.h"
+#include "util/debug.h"
+#include "wsi_common_display.h"
+
+#define MM_PER_PIXEL     (1.0/96.0 * 25.4)
+
+VkResult
+radv_GetPhysicalDeviceDisplayPropertiesKHR(VkPhysicalDevice physical_device,
+                                           uint32_t *property_count,
+                                           VkDisplayPropertiesKHR *properties)
+{
+	RADV_FROM_HANDLE(radv_physical_device, pdevice, physical_device);
+
+	return wsi_display_get_physical_device_display_properties(
+		physical_device,
+		&pdevice->wsi_device,
+		property_count,
+		properties);
+}
+
+VkResult
+radv_GetPhysicalDeviceDisplayPlanePropertiesKHR(
+	VkPhysicalDevice physical_device,
+	uint32_t *property_count,
+	VkDisplayPlanePropertiesKHR *properties)
+{
+	RADV_FROM_HANDLE(radv_physical_device, pdevice, physical_device);
+
+	return wsi_display_get_physical_device_display_plane_properties(
+		physical_device,
+		&pdevice->wsi_device,
+		property_count,
+		properties);
+}
+
+VkResult
+radv_GetDisplayPlaneSupportedDisplaysKHR(VkPhysicalDevice physical_device,
+                                         uint32_t plane_index,
+                                         uint32_t *display_count,
+                                         VkDisplayKHR *displays)
+{
+	RADV_FROM_HANDLE(radv_physical_device, pdevice, physical_device);
+
+	return wsi_display_get_display_plane_supported_displays(
+		physical_device,
+		&pdevice->wsi_device,
+		plane_index,
+		display_count,
+		displays);
+}
+
+
+VkResult
+radv_GetDisplayModePropertiesKHR(VkPhysicalDevice physical_device,
+                                 VkDisplayKHR display,
+                                 uint32_t *property_count,
+                                 VkDisplayModePropertiesKHR *properties)
+{
+	RADV_FROM_HANDLE(radv_physical_device, pdevice, physical_device);
+
+	return wsi_display_get_display_mode_properties(physical_device,
+						       &pdevice->wsi_device,
+						       display,
+						       property_count,
+						       properties);
+}
+
+VkResult
+radv_CreateDisplayModeKHR(VkPhysicalDevice physical_device,
+                          VkDisplayKHR display,
+                          const VkDisplayModeCreateInfoKHR *create_info,
+                          const VkAllocationCallbacks *allocator,
+                          VkDisplayModeKHR *mode)
+{
+	RADV_FROM_HANDLE(radv_physical_device, pdevice, physical_device);
+
+	return wsi_display_create_display_mode(physical_device,
+					       &pdevice->wsi_device,
+					       display,
+					       create_info,
+					       allocator,
+					       mode);
+}
+
+VkResult
+radv_GetDisplayPlaneCapabilitiesKHR(VkPhysicalDevice physical_device,
+                                    VkDisplayModeKHR mode_khr,
+                                    uint32_t plane_index,
+                                    VkDisplayPlaneCapabilitiesKHR *capabilities)
+{
+	RADV_FROM_HANDLE(radv_physical_device, pdevice, physical_device);
+
+	return wsi_get_display_plane_capabilities(physical_device,
+						  &pdevice->wsi_device,
+						  mode_khr,
+						  plane_index,
+						  capabilities);
+}
+
+VkResult
+radv_CreateDisplayPlaneSurfaceKHR(
+	VkInstance _instance,
+	const VkDisplaySurfaceCreateInfoKHR *create_info,
+	const VkAllocationCallbacks *allocator,
+	VkSurfaceKHR *surface)
+{
+	RADV_FROM_HANDLE(radv_instance, instance, _instance);
+	const VkAllocationCallbacks *alloc;
+
+	if (allocator)
+		alloc = allocator;
+	else
+		alloc = &instance->alloc;
+
+	return wsi_create_display_surface(_instance, alloc,
+					  create_info, surface);
+}