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From: Akihiko Odaki <akihiko.odaki@daynix.com>
To: "Michael S. Tsirkin" <mst@redhat.com>,
	"Marcel Apfelbaum" <marcel.apfelbaum@gmail.com>,
	"Alex Williamson" <alex.williamson@redhat.com>,
	"Cédric Le Goater" <clg@redhat.com>,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	"Daniel P. Berrangé" <berrange@redhat.com>,
	"Eduardo Habkost" <eduardo@habkost.net>,
	"Jason Wang" <jasowang@redhat.com>,
	"Sriram Yagnaraman" <sriram.yagnaraman@ericsson.com>,
	"Keith Busch" <kbusch@kernel.org>,
	"Klaus Jensen" <its@irrelevant.dk>
Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org,
	 Yui Washizu <yui.washidu@gmail.com>,
	 Akihiko Odaki <akihiko.odaki@daynix.com>
Subject: [PATCH for-9.2 v6 6/9] virtio-pci: Implement SR-IOV PF
Date: Fri, 02 Aug 2024 15:49:50 +0900	[thread overview]
Message-ID: <20240802-sriov-v6-6-0c8ff49c4276@daynix.com> (raw)
In-Reply-To: <20240802-sriov-v6-0-0c8ff49c4276@daynix.com>

Allow user to attach SR-IOV VF to a virtio-pci PF.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
---
 include/hw/virtio/virtio-pci.h |  1 +
 hw/virtio/virtio-pci.c         | 20 +++++++++++++++-----
 2 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/include/hw/virtio/virtio-pci.h b/include/hw/virtio/virtio-pci.h
index 9e67ba38c748..34539f2f6722 100644
--- a/include/hw/virtio/virtio-pci.h
+++ b/include/hw/virtio/virtio-pci.h
@@ -152,6 +152,7 @@ struct VirtIOPCIProxy {
     uint32_t modern_io_bar_idx;
     uint32_t modern_mem_bar_idx;
     int config_cap;
+    uint16_t last_pcie_cap_offset;
     uint32_t flags;
     bool disable_modern;
     bool ignore_backend_features;
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index 9534730bba19..0c8fcc5627d5 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -1955,6 +1955,7 @@ static void virtio_pci_device_plugged(DeviceState *d, Error **errp)
     uint8_t *config;
     uint32_t size;
     VirtIODevice *vdev = virtio_bus_get_device(bus);
+    int16_t res;
 
     /*
      * Virtio capabilities present without
@@ -2100,6 +2101,14 @@ static void virtio_pci_device_plugged(DeviceState *d, Error **errp)
         pci_register_bar(&proxy->pci_dev, proxy->legacy_io_bar_idx,
                          PCI_BASE_ADDRESS_SPACE_IO, &proxy->bar);
     }
+
+    res = pcie_sriov_pf_init_from_user_created_vfs(&proxy->pci_dev,
+                                                   proxy->last_pcie_cap_offset,
+                                                   errp);
+    if (res > 0) {
+        proxy->last_pcie_cap_offset += res;
+        virtio_add_feature(&vdev->host_features, VIRTIO_F_SR_IOV);
+    }
 }
 
 static void virtio_pci_device_unplugged(DeviceState *d)
@@ -2187,7 +2196,7 @@ static void virtio_pci_realize(PCIDevice *pci_dev, Error **errp)
 
     if (pcie_port && pci_is_express(pci_dev)) {
         int pos;
-        uint16_t last_pcie_cap_offset = PCI_CONFIG_SPACE_SIZE;
+        proxy->last_pcie_cap_offset = PCI_CONFIG_SPACE_SIZE;
 
         pos = pcie_endpoint_cap_init(pci_dev, 0);
         assert(pos > 0);
@@ -2207,9 +2216,9 @@ static void virtio_pci_realize(PCIDevice *pci_dev, Error **errp)
         pci_set_word(pci_dev->config + pos + PCI_PM_PMC, 0x3);
 
         if (proxy->flags & VIRTIO_PCI_FLAG_AER) {
-            pcie_aer_init(pci_dev, PCI_ERR_VER, last_pcie_cap_offset,
+            pcie_aer_init(pci_dev, PCI_ERR_VER, proxy->last_pcie_cap_offset,
                           PCI_ERR_SIZEOF, NULL);
-            last_pcie_cap_offset += PCI_ERR_SIZEOF;
+            proxy->last_pcie_cap_offset += PCI_ERR_SIZEOF;
         }
 
         if (proxy->flags & VIRTIO_PCI_FLAG_INIT_DEVERR) {
@@ -2234,9 +2243,9 @@ static void virtio_pci_realize(PCIDevice *pci_dev, Error **errp)
         }
 
         if (proxy->flags & VIRTIO_PCI_FLAG_ATS) {
-            pcie_ats_init(pci_dev, last_pcie_cap_offset,
+            pcie_ats_init(pci_dev, proxy->last_pcie_cap_offset,
                           proxy->flags & VIRTIO_PCI_FLAG_ATS_PAGE_ALIGNED);
-            last_pcie_cap_offset += PCI_EXT_CAP_ATS_SIZEOF;
+            proxy->last_pcie_cap_offset += PCI_EXT_CAP_ATS_SIZEOF;
         }
 
         if (proxy->flags & VIRTIO_PCI_FLAG_INIT_FLR) {
@@ -2263,6 +2272,7 @@ static void virtio_pci_exit(PCIDevice *pci_dev)
     bool pcie_port = pci_bus_is_express(pci_get_bus(pci_dev)) &&
                      !pci_bus_is_root(pci_get_bus(pci_dev));
 
+    pcie_sriov_pf_exit(&proxy->pci_dev);
     msix_uninit_exclusive_bar(pci_dev);
     if (proxy->flags & VIRTIO_PCI_FLAG_AER && pcie_port &&
         pci_is_express(pci_dev)) {

-- 
2.45.2



  parent reply	other threads:[~2024-08-02  6:51 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-08-02  6:49 [PATCH for-9.2 v6 0/9] virtio-net: add support for SR-IOV emulation Akihiko Odaki
2024-08-02  6:49 ` [PATCH for-9.2 v6 1/9] hw/pci: Do not add ROM BAR for SR-IOV VF Akihiko Odaki
2024-08-02  6:49 ` [PATCH for-9.2 v6 2/9] hw/pci: Fix SR-IOV VF number calculation Akihiko Odaki
2024-08-02  6:49 ` [PATCH for-9.2 v6 3/9] pcie_sriov: Ensure PF and VF are mutually exclusive Akihiko Odaki
2024-08-02  6:49 ` [PATCH for-9.2 v6 4/9] pcie_sriov: Check PCI Express for SR-IOV PF Akihiko Odaki
2024-08-02  6:49 ` [PATCH for-9.2 v6 5/9] pcie_sriov: Allow user to create SR-IOV device Akihiko Odaki
2024-08-02  6:49 ` Akihiko Odaki [this message]
2024-08-02  6:49 ` [PATCH for-9.2 v6 7/9] virtio-net: Implement SR-IOV VF Akihiko Odaki
2024-08-02  6:49 ` [PATCH for-9.2 v6 8/9] docs: Document composable SR-IOV device Akihiko Odaki
2024-08-02  6:49 ` [PATCH for-9.2 v6 9/9] pcie_sriov: Make a PCI device with user-created VF ARI-capable Akihiko Odaki

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