GPU (Haiku): use system API to fetch PCI devices

CMakeLists.txt

@@ -83,7 +83,7 @@ cmake_dependent_option(ENABLE_DIRECTX_HEADERS "Enable DirectX headers for WSL" O
 cmake_dependent_option(ENABLE_ELF "Enable libelf" ON "LINUX OR ANDROID OR DragonFly OR Haiku" OFF)
 cmake_dependent_option(ENABLE_THREADS "Enable multithreading" ON "Threads_FOUND" OFF)
 cmake_dependent_option(ENABLE_LIBZFS "Enable libzfs" ON "LINUX OR FreeBSD OR SunOS" OFF)
-cmake_dependent_option(ENABLE_PCIACCESS "Enable libpciaccess" ON "NetBSD OR OpenBSD OR SunOS OR Haiku" OFF)
+cmake_dependent_option(ENABLE_PCIACCESS "Enable libpciaccess" ON "NetBSD OR OpenBSD OR SunOS" OFF)
 
 option(ENABLE_SYSTEM_YYJSON "Use system provided (instead of fastfetch embedded) yyjson library" OFF)
 option(ENABLE_ASAN "Build fastfetch with ASAN (address sanitizer)" OFF)
@@ -1143,7 +1143,7 @@ elseif(Haiku)
         src/detection/diskio/diskio_nosupport.c
         src/detection/displayserver/displayserver_haiku.cpp
         src/detection/font/font_haiku.cpp
-        src/detection/gpu/gpu_general.c
+        src/detection/gpu/gpu_haiku.c
         src/detection/gpu/gpu_pci.c
         src/detection/gtk_qt/gtk.c
         src/detection/host/host_nosupport.c

src/detection/gpu/gpu_haiku.c

@@ -0,0 +1,43 @@
+#include "gpu.h"
+#include "common/io/io.h"
+
+#include <private/drivers/poke.h>
+
+const char* ffDetectGPUImpl(FF_MAYBE_UNUSED const FFGPUOptions* options, FFlist* gpus)
+{
+    FF_AUTO_CLOSE_FD int pokefd = open(POKE_DEVICE_FULLNAME, O_RDWR);
+    if (pokefd < 0) return "open(POKE_DEVICE_FULLNAME) failed";
+
+    pci_info dev;
+    pci_info_args cmd = {
+        .signature = POKE_SIGNATURE,
+        .info = &dev,
+    };
+
+    for (cmd.index = 0; ioctl(pokefd, POKE_GET_NTH_PCI_INFO, &cmd) == B_OK && cmd.status == B_OK; ++cmd.index)
+    {
+        if (dev.class_base != 0x03 /*PCI_BASE_CLASS_DISPLAY*/)
+            continue;
+
+        FFGPUResult* gpu = (FFGPUResult*)ffListAdd(gpus);
+        ffStrbufInitStatic(&gpu->vendor, ffGPUGetVendorString(dev.vendor_id));
+        ffStrbufInit(&gpu->name);
+        ffStrbufInit(&gpu->driver);
+        ffStrbufInit(&gpu->platformApi);
+        gpu->temperature = FF_GPU_TEMP_UNSET;
+        gpu->coreCount = FF_GPU_CORE_COUNT_UNSET;
+        gpu->type = FF_GPU_TYPE_UNKNOWN;
+        gpu->dedicated.total = gpu->dedicated.used = gpu->shared.total = gpu->shared.used = FF_GPU_VMEM_SIZE_UNSET;
+        gpu->deviceId = ((uint64_t) dev.bus << 4) | ((uint64_t) dev.device << 2) | (uint64_t) dev.function;
+        gpu->frequency = FF_GPU_FREQUENCY_UNSET;
+
+        if (gpu->vendor.chars == FF_GPU_VENDOR_NAME_AMD)
+            ffGPUQueryAmdGpuName(dev.device_id, dev.revision, gpu);
+
+        if (gpu->name.length == 0)
+            ffGPUFillVendorAndName(dev.class_sub, dev.vendor_id, dev.device_id, gpu);
+    }
+
+    return NULL;
+}
+