On Thu, Oct 24, 2019 at 08:34:27AM -0400, Liu Yi L wrote:
> This patch modifies pci_setup_iommu() to set PCIIOMMUOps instead of only
> setting PCIIOMMUFunc. PCIIOMMUFunc is previously used to get an address
> space for a device in vendor specific way. The PCIIOMMUOps still offers
> this functionality. Use PCIIOMMUOps leaves space to add more iommu related
> vendor specific operations.
>
> Cc: Kevin Tian <kevin.tian@xxxxxxxxx>
> Cc: Jacob Pan <jacob.jun.pan@xxxxxxxxxxxxxxx>
> Cc: Peter Xu <peterx@xxxxxxxxxx>
> Cc: Eric Auger <eric.auger@xxxxxxxxxx>
> Cc: Yi Sun <yi.y.sun@xxxxxxxxxxxxxxx>
> Cc: David Gibson <david@xxxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Liu Yi L <yi.l.liu@xxxxxxxxx>
Reviewed-by: David Gibson <david@xxxxxxxxxxxxxxxxxxxxx>
> ---
> hw/alpha/typhoon.c | 6 +++++-
> hw/arm/smmu-common.c | 6 +++++-
> hw/hppa/dino.c | 6 +++++-
> hw/i386/amd_iommu.c | 6 +++++-
> hw/i386/intel_iommu.c | 6 +++++-
> hw/pci-host/designware.c | 6 +++++-
> hw/pci-host/ppce500.c | 6 +++++-
> hw/pci-host/prep.c | 6 +++++-
> hw/pci-host/sabre.c | 6 +++++-
> hw/pci/pci.c | 11 ++++++-----
> hw/ppc/ppc440_pcix.c | 6 +++++-
> hw/ppc/spapr_pci.c | 6 +++++-
> hw/s390x/s390-pci-bus.c | 8 ++++++--
> include/hw/pci/pci.h | 8 ++++++--
> include/hw/pci/pci_bus.h | 2 +-
> 15 files changed, 74 insertions(+), 21 deletions(-)
>
> diff --git a/hw/alpha/typhoon.c b/hw/alpha/typhoon.c
> index 179e1f7..b890771 100644
> --- a/hw/alpha/typhoon.c
> +++ b/hw/alpha/typhoon.c
> @@ -741,6 +741,10 @@ static AddressSpace *typhoon_pci_dma_iommu(PCIBus *bus, void *opaque, int devfn)
> return &s->pchip.iommu_as;
> }
>
> +static const PCIIOMMUOps typhoon_iommu_ops = {
> + .get_address_space = typhoon_pci_dma_iommu,
> +};
> +
> static void typhoon_set_irq(void *opaque, int irq, int level)
> {
> TyphoonState *s = opaque;
> @@ -901,7 +905,7 @@ PCIBus *typhoon_init(ram_addr_t ram_size, ISABus **isa_bus,
> "iommu-typhoon", UINT64_MAX);
> address_space_init(&s->pchip.iommu_as, MEMORY_REGION(&s->pchip.iommu),
> "pchip0-pci");
> - pci_setup_iommu(b, typhoon_pci_dma_iommu, s);
> + pci_setup_iommu(b, &typhoon_iommu_ops, s);
>
> /* Pchip0 PCI special/interrupt acknowledge, 0x801.F800.0000, 64MB. */
> memory_region_init_io(&s->pchip.reg_iack, OBJECT(s), &alpha_pci_iack_ops,
> diff --git a/hw/arm/smmu-common.c b/hw/arm/smmu-common.c
> index 245817d..d668514 100644
> --- a/hw/arm/smmu-common.c
> +++ b/hw/arm/smmu-common.c
> @@ -342,6 +342,10 @@ static AddressSpace *smmu_find_add_as(PCIBus *bus, void *opaque, int devfn)
> return &sdev->as;
> }
>
> +static const PCIIOMMUOps smmu_ops = {
> + .get_address_space = smmu_find_add_as,
> +};
> +
> IOMMUMemoryRegion *smmu_iommu_mr(SMMUState *s, uint32_t sid)
> {
> uint8_t bus_n, devfn;
> @@ -436,7 +440,7 @@ static void smmu_base_realize(DeviceState *dev, Error **errp)
> s->smmu_pcibus_by_busptr = g_hash_table_new(NULL, NULL);
>
> if (s->primary_bus) {
> - pci_setup_iommu(s->primary_bus, smmu_find_add_as, s);
> + pci_setup_iommu(s->primary_bus, &smmu_ops, s);
> } else {
> error_setg(errp, "SMMU is not attached to any PCI bus!");
> }
> diff --git a/hw/hppa/dino.c b/hw/hppa/dino.c
> index ab6969b..dbcff03 100644
> --- a/hw/hppa/dino.c
> +++ b/hw/hppa/dino.c
> @@ -389,6 +389,10 @@ 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)
> @@ -508,7 +512,7 @@ PCIBus *dino_init(MemoryRegion *addr_space,
> memory_region_add_subregion(&s->bm, 0xfff00000,
> &s->bm_cpu_alias);
> address_space_init(&s->bm_as, &s->bm, "pci-bm");
> - pci_setup_iommu(b, dino_pcihost_set_iommu, s);
> + pci_setup_iommu(b, &dino_iommu_ops, s);
>
> *p_rtc_irq = qemu_allocate_irq(dino_set_timer_irq, s, 0);
> *p_ser_irq = qemu_allocate_irq(dino_set_serial_irq, s, 0);
> diff --git a/hw/i386/amd_iommu.c b/hw/i386/amd_iommu.c
> index d372636..ba6904c 100644
> --- a/hw/i386/amd_iommu.c
> +++ b/hw/i386/amd_iommu.c
> @@ -1451,6 +1451,10 @@ static AddressSpace *amdvi_host_dma_iommu(PCIBus *bus, void *opaque, int devfn)
> return &iommu_as[devfn]->as;
> }
>
> +static const PCIIOMMUOps amdvi_iommu_ops = {
> + .get_address_space = amdvi_host_dma_iommu,
> +};
> +
> static const MemoryRegionOps mmio_mem_ops = {
> .read = amdvi_mmio_read,
> .write = amdvi_mmio_write,
> @@ -1576,7 +1580,7 @@ static void amdvi_realize(DeviceState *dev, Error **err)
>
> sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->mmio);
> sysbus_mmio_map(SYS_BUS_DEVICE(s), 0, AMDVI_BASE_ADDR);
> - pci_setup_iommu(bus, amdvi_host_dma_iommu, s);
> + pci_setup_iommu(bus, &amdvi_iommu_ops, s);
> s->devid = object_property_get_int(OBJECT(&s->pci), "addr", err);
> msi_init(&s->pci.dev, 0, 1, true, false, err);
> amdvi_init(s);
> diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
> index 4a1a07a..67a7836 100644
> --- a/hw/i386/intel_iommu.c
> +++ b/hw/i386/intel_iommu.c
> @@ -3666,6 +3666,10 @@ static AddressSpace *vtd_host_dma_iommu(PCIBus *bus, void *opaque, int devfn)
> return &vtd_as->as;
> }
>
> +static PCIIOMMUOps vtd_iommu_ops = {
> + .get_address_space = vtd_host_dma_iommu,
> +};
> +
> static bool vtd_decide_config(IntelIOMMUState *s, Error **errp)
> {
> X86IOMMUState *x86_iommu = X86_IOMMU_DEVICE(s);
> @@ -3782,7 +3786,7 @@ static void vtd_realize(DeviceState *dev, Error **errp)
> g_free, g_free);
> vtd_init(s);
> sysbus_mmio_map(SYS_BUS_DEVICE(s), 0, Q35_HOST_BRIDGE_IOMMU_ADDR);
> - pci_setup_iommu(bus, vtd_host_dma_iommu, dev);
> + pci_setup_iommu(bus, &vtd_iommu_ops, dev);
> /* Pseudo address space under root PCI bus. */
> pcms->ioapic_as = vtd_host_dma_iommu(bus, s, Q35_PSEUDO_DEVFN_IOAPIC);
> qemu_add_machine_init_done_notifier(&vtd_machine_done_notify);
> diff --git a/hw/pci-host/designware.c b/hw/pci-host/designware.c
> index 71e9b0d..235d6af 100644
> --- a/hw/pci-host/designware.c
> +++ b/hw/pci-host/designware.c
> @@ -645,6 +645,10 @@ 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);
> @@ -686,7 +690,7 @@ 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_set_parent_bus(DEVICE(&s->root), BUS(pci->bus));
> qdev_init_nofail(DEVICE(&s->root));
> diff --git a/hw/pci-host/ppce500.c b/hw/pci-host/ppce500.c
> index 8bed8e8..0f907b0 100644
> --- a/hw/pci-host/ppce500.c
> +++ b/hw/pci-host/ppce500.c
> @@ -439,6 +439,10 @@ 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);
> @@ -473,7 +477,7 @@ 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/prep.c b/hw/pci-host/prep.c
> index 85d7ba9..f372524 100644
> --- a/hw/pci-host/prep.c
> +++ b/hw/pci-host/prep.c
> @@ -213,6 +213,10 @@ static AddressSpace *raven_pcihost_set_iommu(PCIBus *bus, void *opaque,
> return &s->bm_as;
> }
>
> +static const PCIIOMMU raven_iommu_ops = {
> + .get_address_space = raven_pcihost_set_iommu,
> +};
> +
> static void raven_change_gpio(void *opaque, int n, int level)
> {
> PREPPCIState *s = opaque;
> @@ -303,7 +307,7 @@ 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 fae20ee..79b7565 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)
> {
> @@ -402,7 +406,7 @@ 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_create_multifunction(phb->bus, PCI_DEVFN(1, 0), true,
> diff --git a/hw/pci/pci.c b/hw/pci/pci.c
> index aa05c2b..b5ce9ca 100644
> --- a/hw/pci/pci.c
> +++ b/hw/pci/pci.c
> @@ -2615,18 +2615,19 @@ AddressSpace *pci_device_iommu_address_space(PCIDevice *dev)
> PCIBus *bus = pci_get_bus(dev);
> PCIBus *iommu_bus = bus;
>
> - while(iommu_bus && !iommu_bus->iommu_fn && iommu_bus->parent_dev) {
> + while (iommu_bus && !iommu_bus->iommu_ops && iommu_bus->parent_dev) {
> iommu_bus = pci_get_bus(iommu_bus->parent_dev);
> }
> - if (iommu_bus && iommu_bus->iommu_fn) {
> - return iommu_bus->iommu_fn(bus, iommu_bus->iommu_opaque, dev->devfn);
> + if (iommu_bus && iommu_bus->iommu_ops) {
> + return iommu_bus->iommu_ops->get_address_space(bus,
> + iommu_bus->iommu_opaque, dev->devfn);
> }
> return &address_space_memory;
> }
>
> -void pci_setup_iommu(PCIBus *bus, PCIIOMMUFunc fn, void *opaque)
> +void pci_setup_iommu(PCIBus *bus, const PCIIOMMUOps *ops, void *opaque)
> {
> - bus->iommu_fn = fn;
> + bus->iommu_ops = ops;
> bus->iommu_opaque = opaque;
> }
>
> diff --git a/hw/ppc/ppc440_pcix.c b/hw/ppc/ppc440_pcix.c
> index 2ee2d4f..2c8579c 100644
> --- a/hw/ppc/ppc440_pcix.c
> +++ b/hw/ppc/ppc440_pcix.c
> @@ -442,6 +442,10 @@ static AddressSpace *ppc440_pcix_set_iommu(PCIBus *b, void *opaque, int devfn)
> return &s->bm_as;
> }
>
> +static const PCIIOMMUOps ppc440_iommu_ops = {
> + .get_adress_space = ppc440_pcix_set_iommu,
> +};
> +
> /* The default pci_host_data_{read,write} functions in pci/pci_host.c
> * deny access to registers without bit 31 set but our clients want
> * this to work so we have to override these here */
> @@ -487,7 +491,7 @@ static void ppc440_pcix_realize(DeviceState *dev, Error **errp)
> memory_region_init(&s->bm, OBJECT(s), "bm-ppc440-pcix", UINT64_MAX);
> memory_region_add_subregion(&s->bm, 0x0, &s->busmem);
> address_space_init(&s->bm_as, &s->bm, "pci-bm");
> - pci_setup_iommu(h->bus, ppc440_pcix_set_iommu, s);
> + pci_setup_iommu(h->bus, &ppc440_iommu_ops, s);
>
> memory_region_init(&s->container, OBJECT(s), "pci-container", PCI_ALL_SIZE);
> memory_region_init_io(&h->conf_mem, OBJECT(s), &pci_host_conf_le_ops,
> diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
> index 01ff41d..83cd857 100644
> --- a/hw/ppc/spapr_pci.c
> +++ b/hw/ppc/spapr_pci.c
> @@ -771,6 +771,10 @@ static AddressSpace *spapr_pci_dma_iommu(PCIBus *bus, void *opaque, int devfn)
> return &phb->iommu_as;
> }
>
> +static const PCIIOMMUOps spapr_iommu_ops = {
> + .get_address_space = spapr_pci_dma_iommu,
> +};
> +
> static char *spapr_phb_vfio_get_loc_code(SpaprPhbState *sphb, PCIDevice *pdev)
> {
> char *path = NULL, *buf = NULL, *host = NULL;
> @@ -1950,7 +1954,7 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp)
> memory_region_add_subregion(&sphb->iommu_root, SPAPR_PCI_MSI_WINDOW,
> &sphb->msiwindow);
>
> - pci_setup_iommu(bus, spapr_pci_dma_iommu, sphb);
> + pci_setup_iommu(bus, &spapr_iommu_ops, sphb);
>
> pci_bus_set_route_irq_fn(bus, spapr_route_intx_pin_to_irq);
>
> diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c
> index 2d2f4a7..14684a0 100644
> --- a/hw/s390x/s390-pci-bus.c
> +++ b/hw/s390x/s390-pci-bus.c
> @@ -635,6 +635,10 @@ static AddressSpace *s390_pci_dma_iommu(PCIBus *bus, void *opaque, int devfn)
> return &iommu->as;
> }
>
> +static const PCIIOMMUOps s390_iommu_ops = {
> + .get_address_space = s390_pci_dma_iommu,
> +};
> +
> static uint8_t set_ind_atomic(uint64_t ind_loc, uint8_t to_be_set)
> {
> uint8_t ind_old, ind_new;
> @@ -748,7 +752,7 @@ static void s390_pcihost_realize(DeviceState *dev, Error **errp)
> b = pci_register_root_bus(dev, NULL, s390_pci_set_irq, s390_pci_map_irq,
> NULL, get_system_memory(), get_system_io(), 0,
> 64, TYPE_PCI_BUS);
> - pci_setup_iommu(b, s390_pci_dma_iommu, s);
> + pci_setup_iommu(b, &s390_iommu_ops, s);
>
> bus = BUS(b);
> qbus_set_hotplug_handler(bus, OBJECT(dev), &local_err);
> @@ -919,7 +923,7 @@ static void s390_pcihost_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
>
> pdev = PCI_DEVICE(dev);
> pci_bridge_map_irq(pb, dev->id, s390_pci_map_irq);
> - pci_setup_iommu(&pb->sec_bus, s390_pci_dma_iommu, s);
> + pci_setup_iommu(&pb->sec_bus, &s390_iommu_ops, s);
>
> qbus_set_hotplug_handler(BUS(&pb->sec_bus), OBJECT(s), errp);
>
> diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h
> index f3f0ffd..d9fed8d 100644
> --- a/include/hw/pci/pci.h
> +++ b/include/hw/pci/pci.h
> @@ -480,10 +480,14 @@ void pci_bus_get_w64_range(PCIBus *bus, Range *range);
>
> void pci_device_deassert_intx(PCIDevice *dev);
>
> -typedef AddressSpace *(*PCIIOMMUFunc)(PCIBus *, void *, int);
> +typedef struct PCIIOMMUOps PCIIOMMUOps;
> +struct PCIIOMMUOps {
> + AddressSpace * (*get_address_space)(PCIBus *bus,
> + void *opaque, int32_t devfn);
> +};
>
> AddressSpace *pci_device_iommu_address_space(PCIDevice *dev);
> -void pci_setup_iommu(PCIBus *bus, PCIIOMMUFunc fn, void *opaque);
> +void pci_setup_iommu(PCIBus *bus, const PCIIOMMUOps *iommu_ops, void *opaque);
>
> static inline void
> pci_set_byte(uint8_t *config, uint8_t val)
> diff --git a/include/hw/pci/pci_bus.h b/include/hw/pci/pci_bus.h
> index 0714f57..c281057 100644
> --- a/include/hw/pci/pci_bus.h
> +++ b/include/hw/pci/pci_bus.h
> @@ -29,7 +29,7 @@ enum PCIBusFlags {
> struct PCIBus {
> BusState qbus;
> enum PCIBusFlags flags;
> - PCIIOMMUFunc iommu_fn;
> + const PCIIOMMUOps *iommu_ops;
> void *iommu_opaque;
> uint8_t devfn_min;
> uint32_t slot_reserved_mask;
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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