From: Jason Ekstrand <jason.ekstrand@intel.com>
Date: Mon, 2 Nov 2015 20:14:37 +0000 (-0800)
Subject: anv: Report 0 physical devices when not on Broadwell or Ivy Bridge
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=584f9d444238baaaacc138c81c46c88af98438f9;p=mesa.git

anv: Report 0 physical devices when not on Broadwell or Ivy Bridge

Right now, Broadweel and Ivy Bridge are the only supported platforms.
Hopefully, this reduces the chances that someone will try the driver on
unsupported hardware and be confused that it doesn't work.
---

diff --git a/src/vulkan/anv_device.c b/src/vulkan/anv_device.c
index 9def97801c2..3ab2a245de4 100644
--- a/src/vulkan/anv_device.c
+++ b/src/vulkan/anv_device.c
@@ -80,7 +80,18 @@ anv_physical_device_init(struct anv_physical_device *device,
                          "failed to get device info");
       goto fail;
    }
-   
+
+   if (device->info->gen == 7 &&
+       !device->info->is_haswell && !device->info->is_baytrail) {
+      fprintf(stderr, "WARNING: Ivy Bridge Vulkan support is incomplete");
+   } else if (device->info->gen == 8 && !device->info->is_cherryview) {
+      /* Briadwell is as fully supported as anything */
+   } else {
+      result = vk_errorf(VK_UNSUPPORTED,
+                         "Vulkan not yet supported on %s", device->name);
+      goto fail;
+   }
+
    if (anv_gem_get_aperture(fd, &device->aperture_size) == -1) {
       result = vk_errorf(VK_ERROR_INITIALIZATION_FAILED,
                          "failed to get aperture size: %m");
@@ -206,7 +217,7 @@ VkResult anv_CreateInstance(
    instance->pfnAlloc = alloc_callbacks->pfnAlloc;
    instance->pfnFree = alloc_callbacks->pfnFree;
    instance->apiVersion = pCreateInfo->pAppInfo->apiVersion;
-   instance->physicalDeviceCount = 0;
+   instance->physicalDeviceCount = -1;
 
    _mesa_locale_init();
 
@@ -271,13 +282,16 @@ VkResult anv_EnumeratePhysicalDevices(
    ANV_FROM_HANDLE(anv_instance, instance, _instance);
    VkResult result;
 
-   if (instance->physicalDeviceCount == 0) {
+   if (instance->physicalDeviceCount < 0) {
       result = anv_physical_device_init(&instance->physicalDevice,
                                         instance, "/dev/dri/renderD128");
-      if (result != VK_SUCCESS)
+      if (result == VK_UNSUPPORTED) {
+         instance->physicalDeviceCount = 0;
+      } else if (result == VK_SUCCESS) {
+         instance->physicalDeviceCount = 1;
+      } else {
          return result;
-
-      instance->physicalDeviceCount = 1;
+      }
    }
 
    /* pPhysicalDeviceCount is an out parameter if pPhysicalDevices is NULL;
diff --git a/src/vulkan/anv_private.h b/src/vulkan/anv_private.h
index ac3d18fdcbe..8e921afb5fb 100644
--- a/src/vulkan/anv_private.h
+++ b/src/vulkan/anv_private.h
@@ -437,7 +437,7 @@ struct anv_instance {
     PFN_vkAllocFunction                         pfnAlloc;
     PFN_vkFreeFunction                          pfnFree;
     uint32_t                                    apiVersion;
-    uint32_t                                    physicalDeviceCount;
+    int                                         physicalDeviceCount;
     struct anv_physical_device                  physicalDevice;
 
     struct anv_wsi_implementation *             wsi_impl[VK_PLATFORM_NUM_KHR];