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FRET-qemu/hw/pci-host/uninorth.c
Philippe Mathieu-Daudé 8a8c9c3a74 hw/pci-host: Use register definitions from PCI standard 
No need to document magic values when the definition names
from "standard-headers/linux/pci_regs.h" are self-explicit.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230105173702.56610-1-philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Bernhard Beschow <shentey@gmail.com>
2023-01-27 11:47:02 -05:00

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/*
* QEMU Uninorth PCI host (for all Mac99 and newer machines)
*
* Copyright (c) 2006 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "hw/irq.h"
#include "hw/qdev-properties.h"
#include "qemu/module.h"
#include "hw/pci/pci_device.h"
#include "hw/pci/pci_host.h"
#include "hw/pci-host/uninorth.h"
#include "trace.h"
static int pci_unin_map_irq(PCIDevice *pci_dev, int irq_num)
{
return (irq_num + (pci_dev->devfn >> 3)) & 3;
}
static void pci_unin_set_irq(void *opaque, int irq_num, int level)
{
UNINHostState *s = opaque;
trace_unin_set_irq(irq_num, level);
qemu_set_irq(s->irqs[irq_num], level);
}
static uint32_t unin_get_config_reg(uint32_t reg, uint32_t addr)
{
uint32_t retval;
if (reg & (1u << 31)) {
/* XXX OpenBIOS compatibility hack */
retval = reg | (addr & 3);
} else if (reg & 1) {
/* CFA1 style */
retval = (reg & ~7u) | (addr & 7);
} else {
uint32_t slot, func;
/* Grab CFA0 style values */
slot = ctz32(reg & 0xfffff800);
if (slot == 32) {
slot = -1; /* XXX: should this be 0? */
}
func = PCI_FUNC(reg >> 8);
/* ... and then convert them to x86 format */
/* config pointer */
retval = (reg & (0xff - 7)) | (addr & 7);
/* slot, fn */
retval |= PCI_DEVFN(slot, func) << 8;
}
trace_unin_get_config_reg(reg, addr, retval);
return retval;
}
static void unin_data_write(void *opaque, hwaddr addr,
uint64_t val, unsigned len)
{
UNINHostState *s = opaque;
PCIHostState *phb = PCI_HOST_BRIDGE(s);
trace_unin_data_write(addr, len, val);
pci_data_write(phb->bus,
unin_get_config_reg(phb->config_reg, addr),
val, len);
}
static uint64_t unin_data_read(void *opaque, hwaddr addr,
unsigned len)
{
UNINHostState *s = opaque;
PCIHostState *phb = PCI_HOST_BRIDGE(s);
uint32_t val;
val = pci_data_read(phb->bus,
unin_get_config_reg(phb->config_reg, addr),
len);
trace_unin_data_read(addr, len, val);
return val;
}
static const MemoryRegionOps unin_data_ops = {
.read = unin_data_read,
.write = unin_data_write,
.endianness = DEVICE_LITTLE_ENDIAN,
};
static char *pci_unin_main_ofw_unit_address(const SysBusDevice *dev)
{
UNINHostState *s = UNI_NORTH_PCI_HOST_BRIDGE(dev);
return g_strdup_printf("%x", s->ofw_addr);
}
static void pci_unin_main_realize(DeviceState *dev, Error **errp)
{
UNINHostState *s = UNI_NORTH_PCI_HOST_BRIDGE(dev);
PCIHostState *h = PCI_HOST_BRIDGE(dev);
h->bus = pci_register_root_bus(dev, NULL,
pci_unin_set_irq, pci_unin_map_irq,
s,
&s->pci_mmio,
&s->pci_io,
PCI_DEVFN(11, 0), 4, TYPE_PCI_BUS);
pci_create_simple(h->bus, PCI_DEVFN(11, 0), "uni-north-pci");
/*
* DEC 21154 bridge was unused for many years, this comment is
* a placeholder for whoever wishes to resurrect it
*/
}
static void pci_unin_main_init(Object *obj)
{
UNINHostState *s = UNI_NORTH_PCI_HOST_BRIDGE(obj);
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
PCIHostState *h = PCI_HOST_BRIDGE(obj);
/* Use values found on a real PowerMac */
/* Uninorth main bus */
memory_region_init_io(&h->conf_mem, OBJECT(h), &pci_host_conf_le_ops,
obj, "unin-pci-conf-idx", 0x1000);
memory_region_init_io(&h->data_mem, OBJECT(h), &unin_data_ops, obj,
"unin-pci-conf-data", 0x1000);
memory_region_init(&s->pci_mmio, OBJECT(s), "unin-pci-mmio",
0x100000000ULL);
memory_region_init_io(&s->pci_io, OBJECT(s), &unassigned_io_ops, obj,
"unin-pci-isa-mmio", 0x00800000);
memory_region_init_alias(&s->pci_hole, OBJECT(s),
"unin-pci-hole", &s->pci_mmio,
0x80000000ULL, 0x10000000ULL);
sysbus_init_mmio(sbd, &h->conf_mem);
sysbus_init_mmio(sbd, &h->data_mem);
sysbus_init_mmio(sbd, &s->pci_hole);
sysbus_init_mmio(sbd, &s->pci_io);
qdev_init_gpio_out(DEVICE(obj), s->irqs, ARRAY_SIZE(s->irqs));
}
static void pci_u3_agp_realize(DeviceState *dev, Error **errp)
{
UNINHostState *s = U3_AGP_HOST_BRIDGE(dev);
PCIHostState *h = PCI_HOST_BRIDGE(dev);
h->bus = pci_register_root_bus(dev, NULL,
pci_unin_set_irq, pci_unin_map_irq,
s,
&s->pci_mmio,
&s->pci_io,
PCI_DEVFN(11, 0), 4, TYPE_PCI_BUS);
pci_create_simple(h->bus, PCI_DEVFN(11, 0), "u3-agp");
}
static void pci_u3_agp_init(Object *obj)
{
UNINHostState *s = U3_AGP_HOST_BRIDGE(obj);
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
PCIHostState *h = PCI_HOST_BRIDGE(obj);
/* Uninorth U3 AGP bus */
memory_region_init_io(&h->conf_mem, OBJECT(h), &pci_host_conf_le_ops,
obj, "unin-pci-conf-idx", 0x1000);
memory_region_init_io(&h->data_mem, OBJECT(h), &unin_data_ops, obj,
"unin-pci-conf-data", 0x1000);
memory_region_init(&s->pci_mmio, OBJECT(s), "unin-pci-mmio",
0x100000000ULL);
memory_region_init_io(&s->pci_io, OBJECT(s), &unassigned_io_ops, obj,
"unin-pci-isa-mmio", 0x00800000);
memory_region_init_alias(&s->pci_hole, OBJECT(s),
"unin-pci-hole", &s->pci_mmio,
0x80000000ULL, 0x70000000ULL);
sysbus_init_mmio(sbd, &h->conf_mem);
sysbus_init_mmio(sbd, &h->data_mem);
sysbus_init_mmio(sbd, &s->pci_hole);
sysbus_init_mmio(sbd, &s->pci_io);
qdev_init_gpio_out(DEVICE(obj), s->irqs, ARRAY_SIZE(s->irqs));
}
static void pci_unin_agp_realize(DeviceState *dev, Error **errp)
{
UNINHostState *s = UNI_NORTH_AGP_HOST_BRIDGE(dev);
PCIHostState *h = PCI_HOST_BRIDGE(dev);
h->bus = pci_register_root_bus(dev, NULL,
pci_unin_set_irq, pci_unin_map_irq,
s,
&s->pci_mmio,
&s->pci_io,
PCI_DEVFN(11, 0), 4, TYPE_PCI_BUS);
pci_create_simple(h->bus, PCI_DEVFN(11, 0), "uni-north-agp");
}
static void pci_unin_agp_init(Object *obj)
{
UNINHostState *s = UNI_NORTH_AGP_HOST_BRIDGE(obj);
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
PCIHostState *h = PCI_HOST_BRIDGE(obj);
/* Uninorth AGP bus */
memory_region_init_io(&h->conf_mem, OBJECT(h), &pci_host_conf_le_ops,
obj, "unin-agp-conf-idx", 0x1000);
memory_region_init_io(&h->data_mem, OBJECT(h), &pci_host_data_le_ops,
obj, "unin-agp-conf-data", 0x1000);
sysbus_init_mmio(sbd, &h->conf_mem);
sysbus_init_mmio(sbd, &h->data_mem);
qdev_init_gpio_out(DEVICE(obj), s->irqs, ARRAY_SIZE(s->irqs));
}
static void pci_unin_internal_realize(DeviceState *dev, Error **errp)
{
UNINHostState *s = UNI_NORTH_INTERNAL_PCI_HOST_BRIDGE(dev);
PCIHostState *h = PCI_HOST_BRIDGE(dev);
h->bus = pci_register_root_bus(dev, NULL,
pci_unin_set_irq, pci_unin_map_irq,
s,
&s->pci_mmio,
&s->pci_io,
PCI_DEVFN(14, 0), 4, TYPE_PCI_BUS);
pci_create_simple(h->bus, PCI_DEVFN(14, 0), "uni-north-internal-pci");
}
static void pci_unin_internal_init(Object *obj)
{
UNINHostState *s = UNI_NORTH_INTERNAL_PCI_HOST_BRIDGE(obj);
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
PCIHostState *h = PCI_HOST_BRIDGE(obj);
/* Uninorth internal bus */
memory_region_init_io(&h->conf_mem, OBJECT(h), &pci_host_conf_le_ops,
obj, "unin-pci-conf-idx", 0x1000);
memory_region_init_io(&h->data_mem, OBJECT(h), &pci_host_data_le_ops,
obj, "unin-pci-conf-data", 0x1000);
sysbus_init_mmio(sbd, &h->conf_mem);
sysbus_init_mmio(sbd, &h->data_mem);
qdev_init_gpio_out(DEVICE(obj), s->irqs, ARRAY_SIZE(s->irqs));
}
static void unin_main_pci_host_realize(PCIDevice *d, Error **errp)
{
d->config[PCI_CACHE_LINE_SIZE] = 0x08;
d->config[PCI_LATENCY_TIMER] = 0x10;
d->config[PCI_CAPABILITY_LIST] = 0x00;
/*
* Set kMacRISCPCIAddressSelect (0x48) register to indicate PCI
* memory space with base 0x80000000, size 0x10000000 for Apple's
* AppleMacRiscPCI driver
*/
d->config[0x48] = 0x0;
d->config[0x49] = 0x0;
d->config[0x4a] = 0x0;
d->config[0x4b] = 0x1;
}
static void unin_agp_pci_host_realize(PCIDevice *d, Error **errp)
{
d->config[PCI_CACHE_LINE_SIZE] = 0x08;
d->config[PCI_LATENCY_TIMER] = 0x10;
/* d->config[PCI_CAPABILITY_LIST] = 0x80; */
}
static void u3_agp_pci_host_realize(PCIDevice *d, Error **errp)
{
d->config[PCI_CACHE_LINE_SIZE] = 0x08;
d->config[PCI_LATENCY_TIMER] = 0x10;
}
static void unin_internal_pci_host_realize(PCIDevice *d, Error **errp)
{
d->config[PCI_CACHE_LINE_SIZE] = 0x08;
d->config[PCI_LATENCY_TIMER] = 0x10;
d->config[PCI_CAPABILITY_LIST] = 0x00;
}
static void unin_main_pci_host_class_init(ObjectClass *klass, void *data)
{
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
DeviceClass *dc = DEVICE_CLASS(klass);
k->realize = unin_main_pci_host_realize;
k->vendor_id = PCI_VENDOR_ID_APPLE;
k->device_id = PCI_DEVICE_ID_APPLE_UNI_N_PCI;
k->revision = 0x00;
k->class_id = PCI_CLASS_BRIDGE_HOST;
/*
* PCI-facing part of the host bridge, not usable without the
* host-facing part, which can't be device_add'ed, yet.
*/
dc->user_creatable = false;
}
static const TypeInfo unin_main_pci_host_info = {
.name = "uni-north-pci",
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(PCIDevice),
.class_init = unin_main_pci_host_class_init,
.interfaces = (InterfaceInfo[]) {
{ INTERFACE_CONVENTIONAL_PCI_DEVICE },
{ },
},
};
static void u3_agp_pci_host_class_init(ObjectClass *klass, void *data)
{
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
DeviceClass *dc = DEVICE_CLASS(klass);
k->realize = u3_agp_pci_host_realize;
k->vendor_id = PCI_VENDOR_ID_APPLE;
k->device_id = PCI_DEVICE_ID_APPLE_U3_AGP;
k->revision = 0x00;
k->class_id = PCI_CLASS_BRIDGE_HOST;
/*
* PCI-facing part of the host bridge, not usable without the
* host-facing part, which can't be device_add'ed, yet.
*/
dc->user_creatable = false;
}
static const TypeInfo u3_agp_pci_host_info = {
.name = "u3-agp",
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(PCIDevice),
.class_init = u3_agp_pci_host_class_init,
.interfaces = (InterfaceInfo[]) {
{ INTERFACE_CONVENTIONAL_PCI_DEVICE },
{ },
},
};
static void unin_agp_pci_host_class_init(ObjectClass *klass, void *data)
{
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
DeviceClass *dc = DEVICE_CLASS(klass);
k->realize = unin_agp_pci_host_realize;
k->vendor_id = PCI_VENDOR_ID_APPLE;
k->device_id = PCI_DEVICE_ID_APPLE_UNI_N_AGP;
k->revision = 0x00;
k->class_id = PCI_CLASS_BRIDGE_HOST;
/*
* PCI-facing part of the host bridge, not usable without the
* host-facing part, which can't be device_add'ed, yet.
*/
dc->user_creatable = false;
}
static const TypeInfo unin_agp_pci_host_info = {
.name = "uni-north-agp",
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(PCIDevice),
.class_init = unin_agp_pci_host_class_init,
.interfaces = (InterfaceInfo[]) {
{ INTERFACE_CONVENTIONAL_PCI_DEVICE },
{ },
},
};
static void unin_internal_pci_host_class_init(ObjectClass *klass, void *data)
{
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
DeviceClass *dc = DEVICE_CLASS(klass);
k->realize = unin_internal_pci_host_realize;
k->vendor_id = PCI_VENDOR_ID_APPLE;
k->device_id = PCI_DEVICE_ID_APPLE_UNI_N_I_PCI;
k->revision = 0x00;
k->class_id = PCI_CLASS_BRIDGE_HOST;
/*
* PCI-facing part of the host bridge, not usable without the
* host-facing part, which can't be device_add'ed, yet.
*/
dc->user_creatable = false;
}
static const TypeInfo unin_internal_pci_host_info = {
.name = "uni-north-internal-pci",
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(PCIDevice),
.class_init = unin_internal_pci_host_class_init,
.interfaces = (InterfaceInfo[]) {
{ INTERFACE_CONVENTIONAL_PCI_DEVICE },
{ },
},
};
static Property pci_unin_main_pci_host_props[] = {
DEFINE_PROP_UINT32("ofw-addr", UNINHostState, ofw_addr, -1),
DEFINE_PROP_END_OF_LIST()
};
static void pci_unin_main_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
SysBusDeviceClass *sbc = SYS_BUS_DEVICE_CLASS(klass);
dc->realize = pci_unin_main_realize;
device_class_set_props(dc, pci_unin_main_pci_host_props);
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
dc->fw_name = "pci";
sbc->explicit_ofw_unit_address = pci_unin_main_ofw_unit_address;
}
static const TypeInfo pci_unin_main_info = {
.name = TYPE_UNI_NORTH_PCI_HOST_BRIDGE,
.parent = TYPE_PCI_HOST_BRIDGE,
.instance_size = sizeof(UNINHostState),
.instance_init = pci_unin_main_init,
.class_init = pci_unin_main_class_init,
};
static void pci_u3_agp_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = pci_u3_agp_realize;
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
}
static const TypeInfo pci_u3_agp_info = {
.name = TYPE_U3_AGP_HOST_BRIDGE,
.parent = TYPE_PCI_HOST_BRIDGE,
.instance_size = sizeof(UNINHostState),
.instance_init = pci_u3_agp_init,
.class_init = pci_u3_agp_class_init,
};
static void pci_unin_agp_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = pci_unin_agp_realize;
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
}
static const TypeInfo pci_unin_agp_info = {
.name = TYPE_UNI_NORTH_AGP_HOST_BRIDGE,
.parent = TYPE_PCI_HOST_BRIDGE,
.instance_size = sizeof(UNINHostState),
.instance_init = pci_unin_agp_init,
.class_init = pci_unin_agp_class_init,
};
static void pci_unin_internal_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = pci_unin_internal_realize;
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
}
static const TypeInfo pci_unin_internal_info = {
.name = TYPE_UNI_NORTH_INTERNAL_PCI_HOST_BRIDGE,
.parent = TYPE_PCI_HOST_BRIDGE,
.instance_size = sizeof(UNINHostState),
.instance_init = pci_unin_internal_init,
.class_init = pci_unin_internal_class_init,
};
/* UniN device */
static void unin_write(void *opaque, hwaddr addr, uint64_t value,
unsigned size)
{
trace_unin_write(addr, value);
}
static uint64_t unin_read(void *opaque, hwaddr addr, unsigned size)
{
uint32_t value;
switch (addr) {
case 0:
value = UNINORTH_VERSION_10A;
break;
default:
value = 0;
}
trace_unin_read(addr, value);
return value;
}
static const MemoryRegionOps unin_ops = {
.read = unin_read,
.write = unin_write,
.endianness = DEVICE_BIG_ENDIAN,
};
static void unin_init(Object *obj)
{
UNINState *s = UNI_NORTH(obj);
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
memory_region_init_io(&s->mem, obj, &unin_ops, s, "unin", 0x1000);
sysbus_init_mmio(sbd, &s->mem);
}
static void unin_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
}
static const TypeInfo unin_info = {
.name = TYPE_UNI_NORTH,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(UNINState),
.instance_init = unin_init,
.class_init = unin_class_init,
};
static void unin_register_types(void)
{
type_register_static(&unin_main_pci_host_info);
type_register_static(&u3_agp_pci_host_info);
type_register_static(&unin_agp_pci_host_info);
type_register_static(&unin_internal_pci_host_info);
type_register_static(&pci_unin_main_info);
type_register_static(&pci_u3_agp_info);
type_register_static(&pci_unin_agp_info);
type_register_static(&pci_unin_internal_info);
type_register_static(&unin_info);
}
type_init(unin_register_types)
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