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ppc/pnv: turn PnvPHB3 into a PnvPHB backend

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We need a handful of changes that needs to be done in a single swoop to
turn PnvPHB3 into a PnvPHB backend.

In the PnvPHB3, since the PnvPHB device implements PCIExpressHost and
will hold the PCI bus, change PnvPHB3 parent to TYPE_DEVICE. There are a
couple of instances in pnv_phb3.c that needs to access the PCI bus, so a
phb_base pointer is added to allow access to the parent PnvPHB. The
PnvPHB3 root port will now be connected to a PnvPHB object.

In pnv.c, the powernv8 machine chip8 will now hold an array of PnvPHB
objects.  pnv_get_phb3_child() needs to be adapted to return the PnvPHB3
backend from the PnvPHB child. A global property is added in
pnv_machine_power8_class_init() to ensure that all PnvPHBs are created
with phb->version = 3.

After all these changes we're still able to boot a powernv8 machine with
default settings. The real gain will come with user created PnvPHB
devices, coming up next.

Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Frederic Barrat <fbarrat@linux.ibm.com>
Message-Id: <20220624084921.399219-4-danielhb413@gmail.com>
This commit is contained in:
Daniel Henrique Barboza 2022-06-24 05:49:12 -03:00
parent e4e6db5283
commit 1f5d6b2ad1
4 changed files with 26 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
hw/pci-host/pnv_phb3.c
View File

@ -11,6 +11,7 @@
#include "qapi/visitor.h"
#include "qapi/error.h"
#include "hw/pci-host/pnv_phb3_regs.h"
#include "hw/pci-host/pnv_phb.h"
#include "hw/pci-host/pnv_phb3.h"
#include "hw/pci/pcie_host.h"
#include "hw/pci/pcie_port.h"
@ -26,7 +27,7 @@
static PCIDevice *pnv_phb3_find_cfg_dev(PnvPHB3 *phb)
{
PCIHostState *pci = PCI_HOST_BRIDGE(phb);
PCIHostState *pci = PCI_HOST_BRIDGE(phb->phb_base);
uint64_t addr = phb->regs[PHB_CONFIG_ADDRESS >> 3];
uint8_t bus, devfn;
@ -590,7 +591,7 @@ void pnv_phb3_reg_write(void *opaque, hwaddr off, uint64_t val, unsigned size)
uint64_t pnv_phb3_reg_read(void *opaque, hwaddr off, unsigned size)
{
PnvPHB3 *phb = opaque;
PCIHostState *pci = PCI_HOST_BRIDGE(phb);
PCIHostState *pci = PCI_HOST_BRIDGE(phb->phb_base);
uint64_t val;
if ((off & 0xfffc) == PHB_CONFIG_DATA) {
@ -1011,7 +1012,6 @@ void pnv_phb3_bus_init(DeviceState *dev, PnvPHB3 *phb)
static void pnv_phb3_realize(DeviceState *dev, Error **errp)
{
PnvPHB3 *phb = PNV_PHB3(dev);
PCIHostState *pci = PCI_HOST_BRIDGE(dev);
PnvMachineState *pnv = PNV_MACHINE(qdev_get_machine());
int i;
@ -1056,11 +1056,6 @@ static void pnv_phb3_realize(DeviceState *dev, Error **errp)
/* Controller Registers */
memory_region_init_io(&phb->mr_regs, OBJECT(phb), &pnv_phb3_reg_ops, phb,
"phb3-regs", 0x1000);
pnv_phb3_bus_init(dev, phb);
pnv_phb_attach_root_port(pci, TYPE_PNV_PHB3_ROOT_PORT,
phb->phb_id, phb->chip_id);
}
void pnv_phb3_update_regions(PnvPHB3 *phb)
@ -1085,38 +1080,26 @@ void pnv_phb3_update_regions(PnvPHB3 *phb)
pnv_phb3_check_all_m64s(phb);
}
static const char *pnv_phb3_root_bus_path(PCIHostState *host_bridge,
PCIBus *rootbus)
{
PnvPHB3 *phb = PNV_PHB3(host_bridge);
snprintf(phb->bus_path, sizeof(phb->bus_path), "00%02x:%02x",
phb->chip_id, phb->phb_id);
return phb->bus_path;
}
static Property pnv_phb3_properties[] = {
DEFINE_PROP_UINT32("index", PnvPHB3, phb_id, 0),
DEFINE_PROP_UINT32("chip-id", PnvPHB3, chip_id, 0),
DEFINE_PROP_LINK("chip", PnvPHB3, chip, TYPE_PNV_CHIP, PnvChip *),
DEFINE_PROP_LINK("phb-base", PnvPHB3, phb_base, TYPE_PNV_PHB, PnvPHB *),
DEFINE_PROP_END_OF_LIST(),
};
static void pnv_phb3_class_init(ObjectClass *klass, void *data)
{
PCIHostBridgeClass *hc = PCI_HOST_BRIDGE_CLASS(klass);
DeviceClass *dc = DEVICE_CLASS(klass);
hc->root_bus_path = pnv_phb3_root_bus_path;
dc->realize = pnv_phb3_realize;
device_class_set_props(dc, pnv_phb3_properties);
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
dc->user_creatable = false;
}
static const TypeInfo pnv_phb3_type_info = {
.name = TYPE_PNV_PHB3,
.parent = TYPE_PCIE_HOST_BRIDGE,
.parent = TYPE_DEVICE,
.instance_size = sizeof(PnvPHB3),
.class_init = pnv_phb3_class_init,
.instance_init = pnv_phb3_instance_init,

21
hw/ppc/pnv.c
View File

@ -43,6 +43,7 @@
#include "hw/ipmi/ipmi.h"
#include "target/ppc/mmu-hash64.h"
#include "hw/pci/msi.h"
#include "hw/pci-host/pnv_phb.h"
#include "hw/ppc/xics.h"
#include "hw/qdev-properties.h"
@ -660,7 +661,8 @@ static void pnv_chip_power8_pic_print_info(PnvChip *chip, Monitor *mon)
ics_pic_print_info(&chip8->psi.ics, mon);
for (i = 0; i < chip8->num_phbs; i++) {
PnvPHB3 *phb3 = &chip8->phbs[i];
PnvPHB *phb = &chip8->phbs[i];
PnvPHB3 *phb3 = PNV_PHB3(phb->backend);
pnv_phb3_msi_pic_print_info(&phb3->msis, mon);
ics_pic_print_info(&phb3->lsis, mon);
@ -1149,7 +1151,7 @@ static void pnv_chip_power8_instance_init(Object *obj)
chip8->num_phbs = pcc->num_phbs;
for (i = 0; i < chip8->num_phbs; i++) {
object_initialize_child(obj, "phb[*]", &chip8->phbs[i], TYPE_PNV_PHB3);
object_initialize_child(obj, "phb[*]", &chip8->phbs[i], TYPE_PNV_PHB);
}
}
@ -1287,9 +1289,9 @@ static void pnv_chip_power8_realize(DeviceState *dev, Error **errp)
memory_region_add_subregion(get_system_memory(), PNV_HOMER_BASE(chip),
&chip8->homer.regs);
/* PHB3 controllers */
/* PHB controllers */
for (i = 0; i < chip8->num_phbs; i++) {
PnvPHB3 *phb = &chip8->phbs[i];
PnvPHB *phb = &chip8->phbs[i];
object_property_set_int(OBJECT(phb), "index", i, &error_fatal);
object_property_set_int(OBJECT(phb), "chip-id", chip->chip_id,
@ -1982,7 +1984,8 @@ static ICSState *pnv_ics_get(XICSFabric *xi, int irq)
}
for (j = 0; j < chip8->num_phbs; j++) {
PnvPHB3 *phb3 = &chip8->phbs[j];
PnvPHB *phb = &chip8->phbs[j];
PnvPHB3 *phb3 = PNV_PHB3(phb->backend);
if (ics_valid_irq(&phb3->lsis, irq)) {
return &phb3->lsis;
@ -2020,7 +2023,8 @@ static void pnv_ics_resend(XICSFabric *xi)
ics_resend(&chip8->psi.ics);
for (j = 0; j < chip8->num_phbs; j++) {
PnvPHB3 *phb3 = &chip8->phbs[j];
PnvPHB *phb = &chip8->phbs[j];
PnvPHB3 *phb3 = PNV_PHB3(phb->backend);
ics_resend(&phb3->lsis);
ics_resend(ICS(&phb3->msis));
@ -2120,8 +2124,13 @@ static void pnv_machine_power8_class_init(ObjectClass *oc, void *data)
PnvMachineClass *pmc = PNV_MACHINE_CLASS(oc);
static const char compat[] = "qemu,powernv8\0qemu,powernv\0ibm,powernv";
static GlobalProperty phb_compat[] = {
{ TYPE_PNV_PHB, "version", "3" },
};
mc->desc = "IBM PowerNV (Non-Virtualized) POWER8";
mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("power8_v2.0");
compat_props_add(mc->compat_props, phb_compat, G_N_ELEMENTS(phb_compat));
xic->icp_get = pnv_icp_get;
xic->ics_get = pnv_ics_get;

5
include/hw/pci-host/pnv_phb3.h
View File

@ -14,6 +14,7 @@
#include "hw/pci/pcie_port.h"
#include "hw/ppc/xics.h"
#include "qom/object.h"
#include "hw/pci-host/pnv_phb.h"
typedef struct PnvPHB3 PnvPHB3;
typedef struct PnvChip PnvChip;
@ -127,7 +128,9 @@ OBJECT_DECLARE_SIMPLE_TYPE(PnvPHB3, PNV_PHB3)
#define PCI_MMIO_TOTAL_SIZE (0x1ull << 60)
struct PnvPHB3 {
PCIExpressHost parent_obj;
DeviceState parent;
PnvPHB *phb_base;
uint32_t chip_id;
uint32_t phb_id;

3
include/hw/ppc/pnv.h
View File

@ -33,6 +33,7 @@
#include "hw/ppc/pnv_core.h"
#include "hw/pci-host/pnv_phb3.h"
#include "hw/pci-host/pnv_phb4.h"
#include "hw/pci-host/pnv_phb.h"
#include "qom/object.h"
#define TYPE_PNV_CHIP "pnv-chip"
@ -81,7 +82,7 @@ struct Pnv8Chip {
PnvHomer homer;
#define PNV8_CHIP_PHB3_MAX 4
PnvPHB3 phbs[PNV8_CHIP_PHB3_MAX];
PnvPHB phbs[PNV8_CHIP_PHB3_MAX];
uint32_t num_phbs;
XICSFabric *xics;