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ppc/pnv: add PHB4 bus init helper 

Similar to what we already did for the PnvPHB3 device, let's add a
helper to init the bus when using a PnvPHB4. This helper will be used by
PnvPHb when PnvPHB4 turns into a backend.

Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Frederic Barrat <fbarrat@linux.ibm.com>
Message-Id: <20220624084921.399219-5-danielhb413@gmail.com>
This commit is contained in:
Daniel Henrique Barboza 2022-06-24 05:49:13 -03:00
parent 1f5d6b2ad1
commit fe5bfd4bb8
3 changed files with 31 additions and 21 deletions
hw/pci-host
pnv_phb.cpnv_phb4.c
include/hw/pci-host
pnv_phb4.h

2
hw/pci-host/pnv_phb.c
View File

@ -69,6 +69,8 @@ static void pnv_phb_realize(DeviceState *dev, Error **errp)
if (phb->version == 3) {
pnv_phb3_bus_init(dev, PNV_PHB3(phb->backend));
} else {
pnv_phb4_bus_init(dev, PNV_PHB4(phb->backend));
}
pnv_phb_attach_root_port(pci, phb_rootport_typename,

49
hw/pci-host/pnv_phb4.c
View File

@ -1528,6 +1528,33 @@ static void pnv_phb4_instance_init(Object *obj)
object_initialize_child(obj, "source", &phb->xsrc, TYPE_XIVE_SOURCE);
}
void pnv_phb4_bus_init(DeviceState *dev, PnvPHB4 *phb)
{
PCIHostState *pci = PCI_HOST_BRIDGE(dev);
char name[32];
/*
* PHB4 doesn't support IO space. However, qemu gets very upset if
* we don't have an IO region to anchor IO BARs onto so we just
* initialize one which we never hook up to anything
*/
snprintf(name, sizeof(name), "phb4-%d.%d-pci-io", phb->chip_id,
phb->phb_id);
memory_region_init(&phb->pci_io, OBJECT(phb), name, 0x10000);
snprintf(name, sizeof(name), "phb4-%d.%d-pci-mmio", phb->chip_id,
phb->phb_id);
memory_region_init(&phb->pci_mmio, OBJECT(phb), name,
PCI_MMIO_TOTAL_SIZE);
pci->bus = pci_register_root_bus(dev, dev->id ? dev->id : NULL,
pnv_phb4_set_irq, pnv_phb4_map_irq, phb,
&phb->pci_mmio, &phb->pci_io,
0, 4, TYPE_PNV_PHB4_ROOT_BUS);
pci_setup_iommu(pci->bus, pnv_phb4_dma_iommu, phb);
pci->bus->flags |= PCI_BUS_EXTENDED_CONFIG_SPACE;
}
static void pnv_phb4_realize(DeviceState *dev, Error **errp)
{
PnvPHB4 *phb = PNV_PHB4(dev);
@ -1546,27 +1573,7 @@ static void pnv_phb4_realize(DeviceState *dev, Error **errp)
memory_region_init_io(&phb->mr_regs, OBJECT(phb), &pnv_phb4_reg_ops, phb,
name, 0x2000);
/*
* PHB4 doesn't support IO space. However, qemu gets very upset if
* we don't have an IO region to anchor IO BARs onto so we just
* initialize one which we never hook up to anything
*/
snprintf(name, sizeof(name), "phb4-%d.%d-pci-io", phb->chip_id,
phb->phb_id);
memory_region_init(&phb->pci_io, OBJECT(phb), name, 0x10000);
snprintf(name, sizeof(name), "phb4-%d.%d-pci-mmio", phb->chip_id,
phb->phb_id);
memory_region_init(&phb->pci_mmio, OBJECT(phb), name,
PCI_MMIO_TOTAL_SIZE);
pci->bus = pci_register_root_bus(dev, dev->id,
pnv_phb4_set_irq, pnv_phb4_map_irq, phb,
&phb->pci_mmio, &phb->pci_io,
0, 4, TYPE_PNV_PHB4_ROOT_BUS);
pci_setup_iommu(pci->bus, pnv_phb4_dma_iommu, phb);
pci->bus->flags |= PCI_BUS_EXTENDED_CONFIG_SPACE;
pnv_phb4_bus_init(dev, phb);
/* Add a single Root port if running with defaults */
pnv_phb_attach_root_port(pci, pecc->rp_model,

1
include/hw/pci-host/pnv_phb4.h
View File

@ -157,6 +157,7 @@ struct PnvPHB4 {
void pnv_phb4_pic_print_info(PnvPHB4 *phb, Monitor *mon);
int pnv_phb4_pec_get_phb_id(PnvPhb4PecState *pec, int stack_index);
void pnv_phb4_bus_init(DeviceState *dev, PnvPHB4 *phb);
extern const MemoryRegionOps pnv_phb4_xscom_ops;
/*