hw/pci: modify pci_setup_iommu() to set PCIIOMMUOps

This patch modifies pci_setup_iommu() to set PCIIOMMUOps
instead of setting PCIIOMMUFunc. PCIIOMMUFunc is used to
get an address space for a PCI device in vendor specific
way. The PCIIOMMUOps still offers this functionality. But
using PCIIOMMUOps leaves space to add more iommu related
vendor specific operations.

Cc: Kevin Tian <kevin.tian@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Eric Auger <eric.auger@redhat.com>
Cc: Yi Sun <yi.y.sun@linux.intel.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Eric Auger <eric.auger@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Hervé Poussineau <hpoussin@reactos.org>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Cc: BALATON Zoltan <balaton@eik.bme.hu>
Cc: Elena Ufimtseva <elena.ufimtseva@oracle.com>
Cc: Jagannathan Raman <jag.raman@oracle.com>
Cc: Matthew Rosato <mjrosato@linux.ibm.com>
Cc: Eric Farman <farman@linux.ibm.com>
Cc: Halil Pasic <pasic@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Thomas Huth <thuth@redhat.com>
Cc: Helge Deller <deller@gmx.de>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
[ clg: - refreshed on latest QEMU
       - included hw/remote/iommu.c
       - documentation update
       - asserts in pci_setup_iommu()
       - removed checks on iommu_bus->iommu_ops->get_address_space
       - included Elroy PCI host (PA-RISC) ]
Signed-off-by: Cédric Le Goater <clg@redhat.com>

8 files changed, 40 insertions, 8 deletions

diff --git a/hw/pci-host/astro.c b/hw/pci-host/astro.c
index 4b2d7caf2d..84e0ca14ac 100644
--- a/hw/pci-host/astro.c
+++ b/hw/pci-host/astro.c
@@ -345,6 +345,10 @@ static AddressSpace *elroy_pcihost_set_iommu(PCIBus *bus, void *opaque,
     return &s->astro->iommu_as;
 }
 
+static const PCIIOMMUOps elroy_pcihost_iommu_ops = {
+    .get_address_space = elroy_pcihost_set_iommu,
+};
+
 /*
  * Encoding in IOSAPIC:
  * base_addr == 0xfffa0000, we want to get 0xa0ff0000.
@@ -834,7 +838,7 @@ static void astro_realize(DeviceState *obj, Error **errp)
                                  &elroy->pci_io);
 
         /* Host memory as seen from the PCI side, via the IOMMU.  */
-        pci_setup_iommu(PCI_HOST_BRIDGE(elroy)->bus, elroy_pcihost_set_iommu,
+        pci_setup_iommu(PCI_HOST_BRIDGE(elroy)->bus, &elroy_pcihost_iommu_ops,
                                  elroy);
     }
 }
diff --git a/hw/pci-host/designware.c b/hw/pci-host/designware.c
index 6f5442f108..f477f97847 100644
--- a/hw/pci-host/designware.c
+++ b/hw/pci-host/designware.c
@@ -663,6 +663,10 @@ static AddressSpace *designware_pcie_host_set_iommu(PCIBus *bus, void *opaque,
     return &s->pci.address_space;
 }
 
+static const PCIIOMMUOps designware_iommu_ops = {
+    .get_address_space = designware_pcie_host_set_iommu,
+};
+
 static void designware_pcie_host_realize(DeviceState *dev, Error **errp)
 {
     PCIHostState *pci = PCI_HOST_BRIDGE(dev);
@@ -705,7 +709,7 @@ static void designware_pcie_host_realize(DeviceState *dev, Error **errp)
     address_space_init(&s->pci.address_space,
                        &s->pci.address_space_root,
                        "pcie-bus-address-space");
-    pci_setup_iommu(pci->bus, designware_pcie_host_set_iommu, s);
+    pci_setup_iommu(pci->bus, &designware_iommu_ops, s);
 
     qdev_realize(DEVICE(&s->root), BUS(pci->bus), &error_fatal);
 }
diff --git a/hw/pci-host/dino.c b/hw/pci-host/dino.c
index 82503229fa..5b0947a16c 100644
--- a/hw/pci-host/dino.c
+++ b/hw/pci-host/dino.c
@@ -354,6 +354,10 @@ static AddressSpace *dino_pcihost_set_iommu(PCIBus *bus, void *opaque,
     return &s->bm_as;
 }
 
+static const PCIIOMMUOps dino_iommu_ops = {
+    .get_address_space = dino_pcihost_set_iommu,
+};
+
 /*
  * Dino interrupts are connected as shown on Page 78, Table 23
  * (Little-endian bit numbers)
@@ -481,7 +485,7 @@ static void dino_pcihost_init(Object *obj)
         g_free(name);
     }
 
-    pci_setup_iommu(phb->bus, dino_pcihost_set_iommu, s);
+    pci_setup_iommu(phb->bus, &dino_iommu_ops, s);
 
     sysbus_init_mmio(sbd, &s->this_mem);
 
diff --git a/hw/pci-host/pnv_phb3.c b/hw/pci-host/pnv_phb3.c
index c5e58f4086..2a74dbe45f 100644
--- a/hw/pci-host/pnv_phb3.c
+++ b/hw/pci-host/pnv_phb3.c
@@ -968,6 +968,10 @@ static AddressSpace *pnv_phb3_dma_iommu(PCIBus *bus, void *opaque, int devfn)
     return &ds->dma_as;
 }
 
+static PCIIOMMUOps pnv_phb3_iommu_ops = {
+    .get_address_space = pnv_phb3_dma_iommu,
+};
+
 static void pnv_phb3_instance_init(Object *obj)
 {
     PnvPHB3 *phb = PNV_PHB3(obj);
@@ -1012,7 +1016,7 @@ void pnv_phb3_bus_init(DeviceState *dev, PnvPHB3 *phb)
     object_property_set_int(OBJECT(pci->bus), "chip-id", phb->chip_id,
                             &error_abort);
 
-    pci_setup_iommu(pci->bus, pnv_phb3_dma_iommu, phb);
+    pci_setup_iommu(pci->bus, &pnv_phb3_iommu_ops, phb);
 }
 
 static void pnv_phb3_realize(DeviceState *dev, Error **errp)
diff --git a/hw/pci-host/pnv_phb4.c b/hw/pci-host/pnv_phb4.c
index 29cb11a5d9..37c7afc18c 100644
--- a/hw/pci-host/pnv_phb4.c
+++ b/hw/pci-host/pnv_phb4.c
@@ -1518,6 +1518,10 @@ static void pnv_phb4_xscom_realize(PnvPHB4 *phb)
                             &phb->phb_regs_mr);
 }
 
+static PCIIOMMUOps pnv_phb4_iommu_ops = {
+    .get_address_space = pnv_phb4_dma_iommu,
+};
+
 static void pnv_phb4_instance_init(Object *obj)
 {
     PnvPHB4 *phb = PNV_PHB4(obj);
@@ -1557,7 +1561,7 @@ void pnv_phb4_bus_init(DeviceState *dev, PnvPHB4 *phb)
     object_property_set_int(OBJECT(pci->bus), "chip-id", phb->chip_id,
                             &error_abort);
 
-    pci_setup_iommu(pci->bus, pnv_phb4_dma_iommu, phb);
+    pci_setup_iommu(pci->bus, &pnv_phb4_iommu_ops, phb);
     pci->bus->flags |= PCI_BUS_EXTENDED_CONFIG_SPACE;
 }
 
diff --git a/hw/pci-host/ppce500.c b/hw/pci-host/ppce500.c
index 38814247f2..453a4e6ed3 100644
--- a/hw/pci-host/ppce500.c
+++ b/hw/pci-host/ppce500.c
@@ -435,6 +435,10 @@ static AddressSpace *e500_pcihost_set_iommu(PCIBus *bus, void *opaque,
     return &s->bm_as;
 }
 
+static const PCIIOMMUOps ppce500_iommu_ops = {
+    .get_address_space = e500_pcihost_set_iommu,
+};
+
 static void e500_pcihost_realize(DeviceState *dev, Error **errp)
 {
     SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
@@ -469,7 +473,7 @@ static void e500_pcihost_realize(DeviceState *dev, Error **errp)
     memory_region_init(&s->bm, OBJECT(s), "bm-e500", UINT64_MAX);
     memory_region_add_subregion(&s->bm, 0x0, &s->busmem);
     address_space_init(&s->bm_as, &s->bm, "pci-bm");
-    pci_setup_iommu(b, e500_pcihost_set_iommu, s);
+    pci_setup_iommu(b, &ppce500_iommu_ops, s);
 
     pci_create_simple(b, 0, "e500-host-bridge");
 
diff --git a/hw/pci-host/raven.c b/hw/pci-host/raven.c
index 9a11ac4b2b..86c3a49087 100644
--- a/hw/pci-host/raven.c
+++ b/hw/pci-host/raven.c
@@ -223,6 +223,10 @@ static AddressSpace *raven_pcihost_set_iommu(PCIBus *bus, void *opaque,
     return &s->bm_as;
 }
 
+static const PCIIOMMUOps raven_iommu_ops = {
+    .get_address_space = raven_pcihost_set_iommu,
+};
+
 static void raven_change_gpio(void *opaque, int n, int level)
 {
     PREPPCIState *s = opaque;
@@ -320,7 +324,7 @@ static void raven_pcihost_initfn(Object *obj)
     memory_region_add_subregion(&s->bm, 0         , &s->bm_pci_memory_alias);
     memory_region_add_subregion(&s->bm, 0x80000000, &s->bm_ram_alias);
     address_space_init(&s->bm_as, &s->bm, "raven-bm");
-    pci_setup_iommu(&s->pci_bus, raven_pcihost_set_iommu, s);
+    pci_setup_iommu(&s->pci_bus, &raven_iommu_ops, s);
 
     h->bus = &s->pci_bus;
 
diff --git a/hw/pci-host/sabre.c b/hw/pci-host/sabre.c
index dcb2e230b6..d0851b48b0 100644
--- a/hw/pci-host/sabre.c
+++ b/hw/pci-host/sabre.c
@@ -112,6 +112,10 @@ static AddressSpace *sabre_pci_dma_iommu(PCIBus *bus, void *opaque, int devfn)
     return &is->iommu_as;
 }
 
+static const PCIIOMMUOps sabre_iommu_ops = {
+    .get_address_space = sabre_pci_dma_iommu,
+};
+
 static void sabre_config_write(void *opaque, hwaddr addr,
                                uint64_t val, unsigned size)
 {
@@ -384,7 +388,7 @@ static void sabre_realize(DeviceState *dev, Error **errp)
     /* IOMMU */
     memory_region_add_subregion_overlap(&s->sabre_config, 0x200,
                     sysbus_mmio_get_region(SYS_BUS_DEVICE(s->iommu), 0), 1);
-    pci_setup_iommu(phb->bus, sabre_pci_dma_iommu, s->iommu);
+    pci_setup_iommu(phb->bus, &sabre_iommu_ops, s->iommu);
 
     /* APB secondary busses */
     pci_dev = pci_new_multifunction(PCI_DEVFN(1, 0), TYPE_SIMBA_PCI_BRIDGE);