From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: "duncan.hopkins" <duncan.hopkins@foundry.com>
Date: Tue, 17 Oct 2023 14:36:39 +0100
Subject: [PATCH] util: Update util/libdrm.h stubs to allow loader.c to compile
 on MacOS.

MacOS does not have the libdrm libraries so is missing xf86drm.h.
util/libdrm.h already has a collection of stubs for systems that do not support the libraries.

A compile on MacOS will fail with the source that uses newer drm functions and structures.
Update adds in missing items that MacOS code needs to compile and run.
New code is copied from the public repository: https://gitlab.freedesktop.org/mesa/drm/-/blob/main/xf86drm.h

Reviewed-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25992>
---
 src/util/libdrm.h | 57 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

diff --git a/src/util/libdrm.h b/src/util/libdrm.h
index cc153cf88ab..e3af494b8d1 100644
--- a/src/util/libdrm.h
+++ b/src/util/libdrm.h
@@ -44,22 +44,79 @@
 #define DRM_BUS_PLATFORM  2
 #define DRM_BUS_HOST1X    3
 
+typedef struct _drmPciDeviceInfo {
+    uint16_t vendor_id;
+    uint16_t device_id;
+    uint16_t subvendor_id;
+    uint16_t subdevice_id;
+    uint8_t revision_id;
+} drmPciDeviceInfo, *drmPciDeviceInfoPtr;
+
+#define DRM_PLATFORM_DEVICE_NAME_LEN 512
+
+typedef struct _drmPlatformBusInfo {
+    char fullname[DRM_PLATFORM_DEVICE_NAME_LEN];
+} drmPlatformBusInfo, *drmPlatformBusInfoPtr;
+
+typedef struct _drmPlatformDeviceInfo {
+    char **compatible; /* NULL terminated list of compatible strings */
+} drmPlatformDeviceInfo, *drmPlatformDeviceInfoPtr;
+
+#define DRM_HOST1X_DEVICE_NAME_LEN 512
+
+typedef struct _drmHost1xBusInfo {
+    char fullname[DRM_HOST1X_DEVICE_NAME_LEN];
+} drmHost1xBusInfo, *drmHost1xBusInfoPtr;
+
+typedef struct _drmPciBusInfo {
+   uint16_t domain;
+   uint8_t bus;
+   uint8_t dev;
+   uint8_t func;
+} drmPciBusInfo, *drmPciBusInfoPtr;
+
 typedef struct _drmDevice {
     char **nodes; /* DRM_NODE_MAX sized array */
     int available_nodes; /* DRM_NODE_* bitmask */
     int bustype;
+    union {
+       drmPciBusInfoPtr pci;
+       drmPlatformBusInfoPtr platform;
+       drmHost1xBusInfoPtr host1x;
+    } businfo;
+    union {
+        drmPciDeviceInfoPtr pci;
+    } deviceinfo;
     /* ... */
 } drmDevice, *drmDevicePtr;
 
+static inline int
+drmGetDevice2(int fd, uint32_t flags, drmDevicePtr *device)
+{
+   return -ENOENT;
+}
+
 static inline int
 drmGetDevices2(uint32_t flags, drmDevicePtr devices[], int max_devices)
 {
    return -ENOENT;
 }
 
+static inline int
+drmGetDeviceFromDevId(dev_t dev_id, uint32_t flags, drmDevicePtr *device)
+{
+   return -ENOENT;
+}
+
+static inline void
+drmFreeDevice(drmDevicePtr *device) {}
+
 static inline void
 drmFreeDevices(drmDevicePtr devices[], int count) {}
 
+static inline char*
+drmGetDeviceNameFromFd2(int fd) { return NULL;}
+
 typedef struct _drmVersion {
     int     version_major;        /**< Major version */
     int     version_minor;        /**< Minor version */