[PATCH 1/2] igb: Add a VF reset handler

["Cédric Le Goater" <clg@kaod.org>]

From: Cédric Le Goater <clg@redhat.com>

Export the igb_vf_reset() helper routine from the PF model to let the
IGBVF model implement its own device reset.

Cc: Akihiko Odaki <akihiko.odaki@daynix.com>
Suggested-by: Sriram Yagnaraman <sriram.yagnaraman@est.tech>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
---
 hw/net/igb_common.h |  1 +
 hw/net/igb_core.h   |  3 +++
 hw/net/igb.c        |  6 ++++++
 hw/net/igb_core.c   |  6 ++++--
 hw/net/igbvf.c      | 10 ++++++++++
 hw/net/trace-events |  1 +
 6 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/hw/net/igb_common.h b/hw/net/igb_common.h
index 5c261ba9d39c..b316a5bcfa5c 100644
--- a/hw/net/igb_common.h
+++ b/hw/net/igb_common.h
@@ -152,5 +152,6 @@ enum {
 
 uint64_t igb_mmio_read(void *opaque, hwaddr addr, unsigned size);
 void igb_mmio_write(void *opaque, hwaddr addr, uint64_t val, unsigned size);
+void igb_vf_reset(void *opaque, uint16_t vfn);
 
 #endif
diff --git a/hw/net/igb_core.h b/hw/net/igb_core.h
index 9cbbfd516bd5..bf8c46f26b51 100644
--- a/hw/net/igb_core.h
+++ b/hw/net/igb_core.h
@@ -130,6 +130,9 @@ igb_core_set_link_status(IGBCore *core);
 void
 igb_core_pci_uninit(IGBCore *core);
 
+void
+igb_core_vf_reset(IGBCore *core, uint16_t vfn);
+
 bool
 igb_can_receive(IGBCore *core);
 
diff --git a/hw/net/igb.c b/hw/net/igb.c
index 8ff832acfc3b..e70a66ee038e 100644
--- a/hw/net/igb.c
+++ b/hw/net/igb.c
@@ -122,6 +122,12 @@ igb_mmio_write(void *opaque, hwaddr addr, uint64_t val, unsigned size)
     igb_core_write(&s->core, addr, val, size);
 }
 
+void igb_vf_reset(void *opaque, uint16_t vfn)
+{
+    IGBState *s = opaque;
+    igb_core_vf_reset(&s->core, vfn);
+}
+
 static bool
 igb_io_get_reg_index(IGBState *s, uint32_t *idx)
 {
diff --git a/hw/net/igb_core.c b/hw/net/igb_core.c
index 8b6b75c522f6..d710b9d32dcb 100644
--- a/hw/net/igb_core.c
+++ b/hw/net/igb_core.c
@@ -2153,11 +2153,13 @@ static void igb_set_vfmailbox(IGBCore *core, int index, uint32_t val)
     }
 }
 
-static void igb_vf_reset(IGBCore *core, uint16_t vfn)
+void igb_core_vf_reset(IGBCore *core, uint16_t vfn)
 {
     uint16_t qn0 = vfn;
     uint16_t qn1 = vfn + IGB_NUM_VM_POOLS;
 
+    trace_igb_core_vf_reset(vfn);
+
     /* disable Rx and Tx for the VF*/
     core->mac[RXDCTL0 + (qn0 * 16)] &= ~E1000_RXDCTL_QUEUE_ENABLE;
     core->mac[RXDCTL0 + (qn1 * 16)] &= ~E1000_RXDCTL_QUEUE_ENABLE;
@@ -2236,7 +2238,7 @@ static void igb_set_vtctrl(IGBCore *core, int index, uint32_t val)
 
     if (val & E1000_CTRL_RST) {
         vfn = (index - PVTCTRL0) / 0x40;
-        igb_vf_reset(core, vfn);
+        igb_core_vf_reset(core, vfn);
     }
 }
 
diff --git a/hw/net/igbvf.c b/hw/net/igbvf.c
index d55e1e8a6abf..07343fa14a89 100644
--- a/hw/net/igbvf.c
+++ b/hw/net/igbvf.c
@@ -273,6 +273,13 @@ static void igbvf_pci_realize(PCIDevice *dev, Error **errp)
     pcie_ari_init(dev, 0x150);
 }
 
+static void igbvf_qdev_reset_hold(Object *obj)
+{
+    PCIDevice *vf = PCI_DEVICE(obj);
+
+    igb_vf_reset(pcie_sriov_get_pf(vf), pcie_sriov_vf_number(vf));
+}
+
 static void igbvf_pci_uninit(PCIDevice *dev)
 {
     IgbVfState *s = IGBVF(dev);
@@ -287,6 +294,7 @@ static void igbvf_class_init(ObjectClass *class, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(class);
     PCIDeviceClass *c = PCI_DEVICE_CLASS(class);
+    ResettableClass *rc = RESETTABLE_CLASS(class);
 
     c->realize = igbvf_pci_realize;
     c->exit = igbvf_pci_uninit;
@@ -295,6 +303,8 @@ static void igbvf_class_init(ObjectClass *class, void *data)
     c->revision = 1;
     c->class_id = PCI_CLASS_NETWORK_ETHERNET;
 
+    rc->phases.hold = igbvf_qdev_reset_hold;
+
     dc->desc = "Intel 82576 Virtual Function";
     dc->user_creatable = false;
 
diff --git a/hw/net/trace-events b/hw/net/trace-events
index 6b5ba669a25d..1cfb0dda92be 100644
--- a/hw/net/trace-events
+++ b/hw/net/trace-events
@@ -274,6 +274,7 @@ igb_core_mdic_read(uint32_t addr, uint32_t data) "MDIC READ: PHY[%u] = 0x%x"
 igb_core_mdic_read_unhandled(uint32_t addr) "MDIC READ: PHY[%u] UNHANDLED"
 igb_core_mdic_write(uint32_t addr, uint32_t data) "MDIC WRITE: PHY[%u] = 0x%x"
 igb_core_mdic_write_unhandled(uint32_t addr) "MDIC WRITE: PHY[%u] UNHANDLED"
+igb_core_vf_reset(uint16_t vfn) "VF%d"
 
 igb_link_set_ext_params(bool asd_check, bool speed_select_bypass, bool pfrstd) "Set extended link params: ASD check: %d, Speed select bypass: %d, PF reset done: %d"
 
-- 
2.41.0