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--- third_party/angle/src/gpu_info_util/SystemInfo_libpci.cpp.orig 2020-11-13 06:42:14 UTC
+++ third_party/angle/src/gpu_info_util/SystemInfo_libpci.cpp
@@ -12,6 +12,11 @@
#include <pci/pci.h>
#include <unistd.h>
+#if defined(__FreeBSD__)
+#include <fcntl.h>
+#include <sys/pciio.h>
+#endif
+
#include "common/angleutils.h"
#include "common/debug.h"
@@ -82,6 +87,75 @@ struct LibPCI : private angle::NonCopyable
};
} // anonymous namespace
+
+#if defined(__FreeBSD__)
+// Adds an entry per PCI GPU found and fills the device and vendor ID.
+bool GetPCIDevicesFreeBSD(std::vector<GPUDeviceInfo> *devices)
+{
+ int fd;
+ struct pci_conf_io conf;
+ struct pci_conf *matches;
+ uint32_t offset = 0;
+
+ fd = open("/dev/pci", O_RDONLY);
+ if (fd < 0)
+ return false;
+
+ matches = new struct pci_conf[32];
+ conf.generation = 0;
+ do {
+ conf.pat_buf_len = 0;
+ conf.num_patterns = 0;
+ conf.patterns = NULL;
+ conf.match_buf_len = 32 * sizeof(struct pci_conf);
+ conf.num_matches = 32;
+ conf.matches = matches;
+ conf.offset = offset;
+ conf.status = PCI_GETCONF_ERROR;
+ if (ioctl(fd, PCIOCGETCONF, &conf) < 0) {
+ if (errno == ENODEV)
+ break;
+ }
+ /* PCI_GETCONF_LIST_CHANGED would require us to start over. */
+ if (conf.status == PCI_GETCONF_ERROR || conf.status == PCI_GETCONF_LIST_CHANGED) {
+ break;
+ }
+
+ for (unsigned int i = 0; i < conf.num_matches; i++) {
+ uint16_t device_class = (matches[i].pc_class << 8) | matches[i].pc_subclass;
+
+ // Skip non-GPU devices
+ switch (device_class)
+ {
+ case PCI_CLASS_DISPLAY_VGA:
+ case PCI_CLASS_DISPLAY_XGA:
+ case PCI_CLASS_DISPLAY_3D:
+ break;
+ default:
+ continue;
+ }
+
+ // Skip unknown devices
+ if (matches[i].pc_vendor == 0 || matches[i].pc_device == 0) {
+ continue;
+ }
+
+ GPUDeviceInfo info;
+ info.vendorId = matches[i].pc_vendor;
+ info.deviceId = matches[i].pc_device;
+
+ devices->push_back(info);
+ }
+ offset += conf.num_matches;
+ } while (conf.status == PCI_GETCONF_MORE_DEVS);
+
+ delete[] matches;
+
+ close(fd);
+
+ return true;
+}
+#endif
// Adds an entry per PCI GPU found and fills the device and vendor ID.
bool GetPCIDevicesWithLibPCI(std::vector<GPUDeviceInfo> *devices)
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