From: Tal Shnaiderman <tal...@mellanox.com>
Uses SetupAPI.h functions to scan PCI tree.
Uses DEVPKEY_Device_Numa_Node to get the PCI NUMA node.
Uses SPDRP_BUSNUMBER and SPDRP_BUSNUMBER to get the BDF.
scanning currently supports types RTE_KDRV_NONE.
Signed-off-by: Tal Shnaiderman <tal...@mellanox.com>
---
drivers/bus/pci/windows/pci.c | 225 ++++++++++++++++++++++++++-
lib/librte_eal/windows/include/rte_windows.h | 1 +
2 files changed, 224 insertions(+), 2 deletions(-)
diff --git a/drivers/bus/pci/windows/pci.c b/drivers/bus/pci/windows/pci.c
index b1d34ae11..e8eff4f6f 100644
--- a/drivers/bus/pci/windows/pci.c
+++ b/drivers/bus/pci/windows/pci.c
@@ -1,14 +1,24 @@
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright 2020 Mellanox Technologies, Ltd
*/
+#include <rte_windows.h>
#include <rte_errno.h>
#include <rte_log.h>
-
#include <rte_string_fns.h>
#include <rte_eal_memconfig.h>
#include "private.h"
+#include <devpkey.h>
+
+#define MAX_STR_TOKENS 8
+#define DEC 10
+#define HEX 16
+/*
+ * This code is used to simulate a PCI probe by parsing information in
+ * the registry hive for PCI devices.
+ */
+
/* The functions below are not implemented on Windows,
* but need to be defined for compilation purposes
*/
@@ -158,6 +168,184 @@ pci_uio_remap_resource(struct rte_pci_device *dev
__rte_unused)
*/
return -1;
}
+
+static
+int get_device_pci_address(HDEVINFO hDevInfo,
+ PSP_DEVINFO_DATA pDeviceInfoData, struct rte_pci_addr *addr)
+{
+ BOOL bResult;
+ ULONG bus_num, dev_and_func;
+
+ bResult = SetupDiGetDeviceRegistryProperty(hDevInfo, pDeviceInfoData,
+ SPDRP_BUSNUMBER, NULL, (PBYTE)&bus_num, sizeof(bus_num), NULL);
+ if (!bResult)
+ goto end;
+
+ bResult = SetupDiGetDeviceRegistryProperty(hDevInfo, pDeviceInfoData,
+ SPDRP_ADDRESS, NULL, (PBYTE)&dev_and_func, sizeof(dev_and_func),
+ NULL);
+ if (!bResult)
+ goto end;
+
+ addr->domain = 0;
+ addr->bus = bus_num;
+ addr->devid = dev_and_func >> 16;
+ addr->function = dev_and_func & 0xffff;
+ return 0;
+end:
+ return GetLastError();
+
+}
+
+static
+int get_device_resource_info(HDEVINFO hDevInfo,
+ PSP_DEVINFO_DATA pDeviceInfoData, struct rte_pci_device *dev)
+{
+ int ret = -1;
+ DEVPROPTYPE uPropertyType;
+ DWORD uNumaNode;
+ BOOL bResult;
+
+ switch (dev->kdrv) {
+ case RTE_KDRV_NONE:
+ /* Get NUMA node using DEVPKEY_Device_Numa_Node */
+ bResult = SetupDiGetDevicePropertyW(hDevInfo, pDeviceInfoData,
+ &DEVPKEY_Device_Numa_Node, &uPropertyType,
+ (BYTE *)&uNumaNode, sizeof(uNumaNode), NULL, 0);
+ if (!bResult) {
+ ret = GetLastError();
+ goto end;
+ }
+ dev->device.numa_node = uNumaNode;
+ /* mem_resource - Unneeded for RTE_KDRV_NONE */
+ dev->mem_resource[0].phys_addr = 0;
+ dev->mem_resource[0].len = 0;
+ dev->mem_resource[0].addr = NULL;
+ break;
+ default:
+ ret = ERROR_NOT_SUPPORTED;
+ goto end;
+ }
+
+ ret = ERROR_SUCCESS;
+end:
+ return ret;
+}
+/*
+ * get_pci_hardware_info from the SPDRP_HARDWAREID output
+ */
+static int
+get_pci_hardware_info(const char *buf, struct rte_pci_id *pci_id)
+{
+ int ids = 0;
+ unsigned int vendorID, deviceID, subvendorID = 0;
+
+ ids = sscanf_s(buf, "PCI\\VEN_%x&DEV_%x&SUBSYS_%x", &vendorID,
+ &deviceID, &subvendorID);
+ if (ids != 3)
+ return -1;
+
+ pci_id->vendor_id = vendorID;
+ pci_id->device_id = deviceID;
+ pci_id->subsystem_vendor_id = subvendorID >> 16;
+ pci_id->subsystem_device_id = subvendorID & 0xffff;
+ return 0;
+}
+
+static void
+get_kernel_driver_type(struct rte_pci_device *dev __rte_unused)
+{
+ /*
+ * If another kernel driver is supported the relevant checking
+ * functions should be here
+ */
+ dev->kdrv = RTE_KDRV_NONE;
+}
+
+static int
+pci_scan_one(HDEVINFO hDevInfo, PSP_DEVINFO_DATA pDeviceInfoData)
+{
+ struct rte_pci_device *dev;
+ int ret = -1;
+
+ dev = malloc(sizeof(struct rte_pci_device));
+ if (dev == NULL) {
+ ret = -1;
+ goto end;
+ }
+
+ memset(dev, 0, sizeof(*dev));
+
+ char strPCIDeviceInfo[PATH_MAX];
+ BOOL bResult;
+ struct rte_pci_addr addr;
+ struct rte_pci_id pci_id;
+
+ /* Retrieve PCI device IDs */
+ bResult = SetupDiGetDeviceRegistryPropertyA(hDevInfo, pDeviceInfoData,
+ SPDRP_HARDWAREID, NULL, (BYTE *)&strPCIDeviceInfo,
+ sizeof(strPCIDeviceInfo), NULL);
+
+ ret = get_pci_hardware_info((const char *)&strPCIDeviceInfo, &pci_id);
+ if (ret != 0) {
+ /*
+ * We won't add this device, but we want to continue
+ * looking for supported devices
+ */
+ ret = ERROR_CONTINUE;
+ goto end;
+ }
+
+ ret = get_device_pci_address(hDevInfo, pDeviceInfoData, &addr);
+ if (ret != 0)
+ goto end;
+
+ dev->addr = addr;
+ dev->id = pci_id;
+ dev->max_vfs = 0; /* TODO: get max_vfs */
+
+ pci_name_set(dev);
+
+ get_kernel_driver_type(dev);
+
+ /* get resources */
+ if (get_device_resource_info(hDevInfo, pDeviceInfoData, dev)
+ != ERROR_SUCCESS) {
+ goto end;
+ }
+
+ /* device is valid, add in list (sorted) */
+ if (TAILQ_EMPTY(&rte_pci_bus.device_list)) {
+ rte_pci_add_device(dev);
+ } else {
+ struct rte_pci_device *dev2 = NULL;
+ int ret;
+
+ TAILQ_FOREACH(dev2, &rte_pci_bus.device_list, next) {
+ ret = rte_pci_addr_cmp(&dev->addr, &dev2->addr);
+ if (ret > 0) {
+ continue;
+ } else if (ret < 0) {
+ rte_pci_insert_device(dev2, dev);
+ } else { /* already registered */
+ dev2->kdrv = dev->kdrv;
+ dev2->max_vfs = dev->max_vfs;
+ memmove(dev2->mem_resource, dev->mem_resource,
+ sizeof(dev->mem_resource));
+ free(dev);
+ }
+ return 0;
+ }
+ rte_pci_add_device(dev);
+ }
+
+ return 0;
+end:
+ if (dev)
+ free(dev);
+ return ret;
+}
+
/*
* Scan the contents of the PCI bus
* and add all network class devices into the devices list.
@@ -165,5 +353,38 @@ pci_uio_remap_resource(struct rte_pci_device *dev
__rte_unused)
int
rte_pci_scan(void)
{
- return 0;
+ DWORD DeviceIndex = 0, FoundDevice = 0;
+ HDEVINFO hDevInfo = NULL;
+ SP_DEVINFO_DATA DeviceInfoData = { 0 };
+ int ret = -1;
+
+ hDevInfo = SetupDiGetClassDevs(&GUID_DEVCLASS_NET, NULL, NULL,
+ DIGCF_PRESENT);
+ if (hDevInfo == INVALID_HANDLE_VALUE) {
+ RTE_LOG(ERR, EAL, "Unable to enumerate PCI devices.\n");
+ goto end;
+ }
+
+ DeviceInfoData.cbSize = sizeof(SP_DEVINFO_DATA);
+ DeviceIndex = 0;
+
+ while (SetupDiEnumDeviceInfo(hDevInfo, DeviceIndex, &DeviceInfoData)) {
+ DeviceIndex++;
+ ret = pci_scan_one(hDevInfo, &DeviceInfoData);
+ if (ret == ERROR_SUCCESS)
+ FoundDevice++;
+ else if (ret != ERROR_CONTINUE)
+ goto end;
+
+ memset(&DeviceInfoData, 0, sizeof(SP_DEVINFO_DATA));
+ DeviceInfoData.cbSize = sizeof(SP_DEVINFO_DATA);
+ }
+
+ RTE_LOG(ERR, EAL, "PCI scan found %lu devices\n", FoundDevice);
+ ret = (FoundDevice != 0) ? 0 : -1;
+end:
+ if (hDevInfo != INVALID_HANDLE_VALUE)
+ SetupDiDestroyDeviceInfoList(hDevInfo);
+
+ return ret;
}
diff --git a/lib/librte_eal/windows/include/rte_windows.h
b/lib/librte_eal/windows/include/rte_windows.h
index 899ed7d87..725ac4f9b 100644
--- a/lib/librte_eal/windows/include/rte_windows.h
+++ b/lib/librte_eal/windows/include/rte_windows.h
@@ -25,6 +25,7 @@
#include <psapi.h>
#include <setupapi.h>
#include <winioctl.h>
+#include <devguid.h>
/* Have GUIDs defined. */
#ifndef INITGUID
--
2.16.1.windows.4
