* THE SOFTWARE.
*/
+#include "qemu/osdep.h"
#include "hw/hw.h"
#include "hw/i386/pc.h"
#include "hw/pci/pci.h"
#include "hw/pci/pci_host.h"
#include "hw/isa/isa.h"
#include "hw/sysbus.h"
+#include "qapi/error.h"
#include "qemu/range.h"
#include "hw/xen/xen.h"
#include "hw/pci-host/pam.h"
#include "sysemu/sysemu.h"
#include "hw/i386/ioapic.h"
#include "qapi/visitor.h"
+#include "qemu/error-report.h"
/*
* I440FX chipset data sheet.
* http://download.intel.com/design/chipsets/datashts/29054901.pdf
*/
-#define TYPE_I440FX_PCI_HOST_BRIDGE "i440FX-pcihost"
#define I440FX_PCI_HOST_BRIDGE(obj) \
OBJECT_CHECK(I440FXState, (obj), TYPE_I440FX_PCI_HOST_BRIDGE)
typedef struct I440FXState {
PCIHostState parent_obj;
- PcPciInfo pci_info;
+ Range pci_hole;
uint64_t pci_hole64_size;
uint32_t short_root_bus;
} I440FXState;
MemoryRegion rcr_mem;
} PIIX3State;
-#define TYPE_I440FX_PCI_DEVICE "i440FX"
+#define TYPE_PIIX3_PCI_DEVICE "pci-piix3"
+#define PIIX3_PCI_DEVICE(obj) \
+ OBJECT_CHECK(PIIX3State, (obj), TYPE_PIIX3_PCI_DEVICE)
+
#define I440FX_PCI_DEVICE(obj) \
OBJECT_CHECK(PCII440FXState, (obj), TYPE_I440FX_PCI_DEVICE)
MemoryRegion *ram_memory;
PAMMemoryRegion pam_regions[13];
MemoryRegion smram_region;
- uint8_t smm_enabled;
+ MemoryRegion smram, low_smram;
};
#define I440FX_PAM_SIZE 7
#define I440FX_SMRAM 0x72
+/* Older coreboot versions (4.0 and older) read a config register that doesn't
+ * exist in real hardware, to get the RAM size from QEMU.
+ */
+#define I440FX_COREBOOT_RAM_SIZE 0x57
+
static void piix3_set_irq(void *opaque, int pirq, int level);
static PCIINTxRoute piix3_route_intx_pin_to_irq(void *opaque, int pci_intx);
static void piix3_write_config_xen(PCIDevice *dev,
pam_update(&d->pam_regions[i], i,
pd->config[I440FX_PAM + ((i + 1) / 2)]);
}
- smram_update(&d->smram_region, pd->config[I440FX_SMRAM], d->smm_enabled);
- memory_region_transaction_commit();
-}
-
-static void i440fx_set_smm(int val, void *arg)
-{
- PCII440FXState *d = arg;
- PCIDevice *pd = PCI_DEVICE(d);
-
- memory_region_transaction_begin();
- smram_set_smm(&d->smm_enabled, val, pd->config[I440FX_SMRAM],
- &d->smram_region);
+ memory_region_set_enabled(&d->smram_region,
+ !(pd->config[I440FX_SMRAM] & SMRAM_D_OPEN));
+ memory_region_set_enabled(&d->smram,
+ pd->config[I440FX_SMRAM] & SMRAM_G_SMRAME);
memory_region_transaction_commit();
}
PCII440FXState *d = opaque;
PCIDevice *pd = PCI_DEVICE(d);
int ret, i;
+ uint8_t smm_enabled;
ret = pci_device_load(pd, f);
if (ret < 0)
return ret;
i440fx_update_memory_mappings(d);
- qemu_get_8s(f, &d->smm_enabled);
+ qemu_get_8s(f, &smm_enabled);
if (version_id == 2) {
for (i = 0; i < PIIX_NUM_PIRQS; i++) {
.post_load = i440fx_post_load,
.fields = (VMStateField[]) {
VMSTATE_PCI_DEVICE(parent_obj, PCII440FXState),
- VMSTATE_UINT8(smm_enabled, PCII440FXState),
+ /* Used to be smm_enabled, which was basically always zero because
+ * SeaBIOS hardly uses SMM. SMRAM is now handled by CPU code.
+ */
+ VMSTATE_UNUSED(1),
VMSTATE_END_OF_LIST()
}
};
static void i440fx_pcihost_get_pci_hole_start(Object *obj, Visitor *v,
- void *opaque, const char *name,
+ const char *name, void *opaque,
Error **errp)
{
I440FXState *s = I440FX_PCI_HOST_BRIDGE(obj);
- uint32_t value = s->pci_info.w32.begin;
+ uint64_t val64;
+ uint32_t value;
- visit_type_uint32(v, &value, name, errp);
+ val64 = range_is_empty(&s->pci_hole) ? 0 : range_lob(&s->pci_hole);
+ value = val64;
+ assert(value == val64);
+ visit_type_uint32(v, name, &value, errp);
}
static void i440fx_pcihost_get_pci_hole_end(Object *obj, Visitor *v,
- void *opaque, const char *name,
+ const char *name, void *opaque,
Error **errp)
{
I440FXState *s = I440FX_PCI_HOST_BRIDGE(obj);
- uint32_t value = s->pci_info.w32.end;
+ uint64_t val64;
+ uint32_t value;
- visit_type_uint32(v, &value, name, errp);
+ val64 = range_is_empty(&s->pci_hole) ? 0 : range_upb(&s->pci_hole) + 1;
+ value = val64;
+ assert(value == val64);
+ visit_type_uint32(v, name, &value, errp);
}
static void i440fx_pcihost_get_pci_hole64_start(Object *obj, Visitor *v,
- void *opaque, const char *name,
- Error **errp)
+ const char *name,
+ void *opaque, Error **errp)
{
PCIHostState *h = PCI_HOST_BRIDGE(obj);
Range w64;
+ uint64_t value;
pci_bus_get_w64_range(h->bus, &w64);
-
- visit_type_uint64(v, &w64.begin, name, errp);
+ value = range_is_empty(&w64) ? 0 : range_lob(&w64);
+ visit_type_uint64(v, name, &value, errp);
}
static void i440fx_pcihost_get_pci_hole64_end(Object *obj, Visitor *v,
- void *opaque, const char *name,
+ const char *name, void *opaque,
Error **errp)
{
PCIHostState *h = PCI_HOST_BRIDGE(obj);
Range w64;
+ uint64_t value;
pci_bus_get_w64_range(h->bus, &w64);
-
- visit_type_uint64(v, &w64.end, name, errp);
+ value = range_is_empty(&w64) ? 0 : range_upb(&w64) + 1;
+ visit_type_uint64(v, name, &value, errp);
}
static void i440fx_pcihost_initfn(Object *obj)
{
PCIHostState *s = PCI_HOST_BRIDGE(obj);
- I440FXState *d = I440FX_PCI_HOST_BRIDGE(obj);
memory_region_init_io(&s->conf_mem, obj, &pci_host_conf_le_ops, s,
"pci-conf-idx", 4);
object_property_add(obj, PCI_HOST_PROP_PCI_HOLE64_END, "int",
i440fx_pcihost_get_pci_hole64_end,
NULL, NULL, NULL, NULL);
-
- d->pci_info.w32.end = IO_APIC_DEFAULT_ADDRESS;
}
static void i440fx_pcihost_realize(DeviceState *dev, Error **errp)
sysbus_init_ioports(sbd, 0xcfc, 4);
}
-static int i440fx_initfn(PCIDevice *dev)
+static void i440fx_realize(PCIDevice *dev, Error **errp)
{
- PCII440FXState *d = I440FX_PCI_DEVICE(dev);
-
dev->config[I440FX_SMRAM] = 0x02;
- cpu_smm_register(&i440fx_set_smm, d);
- return 0;
+ if (object_property_get_bool(qdev_get_machine(), "iommu", NULL)) {
+ error_report("warning: i440fx doesn't support emulated iommu");
+ }
}
-PCIBus *i440fx_init(PCII440FXState **pi440fx_state,
+PCIBus *i440fx_init(const char *host_type, const char *pci_type,
+ PCII440FXState **pi440fx_state,
int *piix3_devfn,
ISABus **isa_bus, qemu_irq *pic,
MemoryRegion *address_space_mem,
unsigned i;
I440FXState *i440fx;
- dev = qdev_create(NULL, TYPE_I440FX_PCI_HOST_BRIDGE);
+ dev = qdev_create(NULL, host_type);
s = PCI_HOST_BRIDGE(dev);
b = pci_bus_new(dev, NULL, pci_address_space,
address_space_io, 0, TYPE_PCI_BUS);
object_property_add_child(qdev_get_machine(), "i440fx", OBJECT(dev), NULL);
qdev_init_nofail(dev);
- d = pci_create_simple(b, 0, TYPE_I440FX_PCI_DEVICE);
+ d = pci_create_simple(b, 0, pci_type);
*pi440fx_state = I440FX_PCI_DEVICE(d);
f = *pi440fx_state;
f->system_memory = address_space_mem;
f->ram_memory = ram_memory;
i440fx = I440FX_PCI_HOST_BRIDGE(dev);
- i440fx->pci_info.w32.begin = below_4g_mem_size;
+ range_set_bounds(&i440fx->pci_hole, below_4g_mem_size,
+ IO_APIC_DEFAULT_ADDRESS - 1);
/* setup pci memory mapping */
pc_pci_as_mapping_init(OBJECT(f), f->system_memory,
f->pci_address_space);
+ /* if *disabled* show SMRAM to all CPUs */
memory_region_init_alias(&f->smram_region, OBJECT(d), "smram-region",
f->pci_address_space, 0xa0000, 0x20000);
memory_region_add_subregion_overlap(f->system_memory, 0xa0000,
&f->smram_region, 1);
- memory_region_set_enabled(&f->smram_region, false);
+ memory_region_set_enabled(&f->smram_region, true);
+
+ /* smram, as seen by SMM CPUs */
+ memory_region_init(&f->smram, OBJECT(d), "smram", 1ull << 32);
+ memory_region_set_enabled(&f->smram, true);
+ memory_region_init_alias(&f->low_smram, OBJECT(d), "smram-low",
+ f->ram_memory, 0xa0000, 0x20000);
+ memory_region_set_enabled(&f->low_smram, true);
+ memory_region_add_subregion(&f->smram, 0xa0000, &f->low_smram);
+ object_property_add_const_link(qdev_get_machine(), "smram",
+ OBJECT(&f->smram), &error_abort);
+
init_pam(dev, f->ram_memory, f->system_memory, f->pci_address_space,
&f->pam_regions[0], PAM_BIOS_BASE, PAM_BIOS_SIZE);
for (i = 0; i < 12; ++i) {
* connected to the IOAPIC directly.
* These additional routes can be discovered through ACPI. */
if (xen_enabled()) {
- piix3 = DO_UPCAST(PIIX3State, dev,
- pci_create_simple_multifunction(b, -1, true, "PIIX3-xen"));
+ PCIDevice *pci_dev = pci_create_simple_multifunction(b,
+ -1, true, "PIIX3-xen");
+ piix3 = PIIX3_PCI_DEVICE(pci_dev);
pci_bus_irqs(b, xen_piix3_set_irq, xen_pci_slot_get_pirq,
piix3, XEN_PIIX_NUM_PIRQS);
} else {
- piix3 = DO_UPCAST(PIIX3State, dev,
- pci_create_simple_multifunction(b, -1, true, "PIIX3"));
+ PCIDevice *pci_dev = pci_create_simple_multifunction(b,
+ -1, true, "PIIX3");
+ piix3 = PIIX3_PCI_DEVICE(pci_dev);
pci_bus_irqs(b, piix3_set_irq, pci_slot_get_pirq, piix3,
PIIX_NUM_PIRQS);
pci_bus_set_route_irq_fn(b, piix3_route_intx_pin_to_irq);
if (ram_size > 255) {
ram_size = 255;
}
- d->config[0x57] = ram_size;
+ d->config[I440FX_COREBOOT_RAM_SIZE] = ram_size;
i440fx_update_memory_mappings(f);
(pic_irq * PIIX_NUM_PIRQS))));
}
-static void piix3_set_irq_level(PIIX3State *piix3, int pirq, int level)
+static void piix3_set_irq_level_internal(PIIX3State *piix3, int pirq, int level)
{
int pic_irq;
uint64_t mask;
mask = 1ULL << ((pic_irq * PIIX_NUM_PIRQS) + pirq);
piix3->pic_levels &= ~mask;
piix3->pic_levels |= mask * !!level;
+}
+
+static void piix3_set_irq_level(PIIX3State *piix3, int pirq, int level)
+{
+ int pic_irq;
+
+ pic_irq = piix3->dev.config[PIIX_PIRQC + pirq];
+ if (pic_irq >= PIIX_NUM_PIC_IRQS) {
+ return;
+ }
+
+ piix3_set_irq_level_internal(piix3, pirq, level);
piix3_set_irq_pic(piix3, pic_irq);
}
{
pci_default_write_config(dev, address, val, len);
if (ranges_overlap(address, len, PIIX_PIRQC, 4)) {
- PIIX3State *piix3 = DO_UPCAST(PIIX3State, dev, dev);
+ PIIX3State *piix3 = PIIX3_PCI_DEVICE(dev);
int pic_irq;
pci_bus_fire_intx_routing_notifier(piix3->dev.bus);
static int piix3_post_load(void *opaque, int version_id)
{
PIIX3State *piix3 = opaque;
- piix3_update_irq_levels(piix3);
+ int pirq;
+
+ /* Because the i8259 has not been deserialized yet, qemu_irq_raise
+ * might bring the system to a different state than the saved one;
+ * for example, the interrupt could be masked but the i8259 would
+ * not know that yet and would trigger an interrupt in the CPU.
+ *
+ * Here, we update irq levels without raising the interrupt.
+ * Interrupt state will be deserialized separately through the i8259.
+ */
+ piix3->pic_levels = 0;
+ for (pirq = 0; pirq < PIIX_NUM_PIRQS; pirq++) {
+ piix3_set_irq_level_internal(piix3, pirq,
+ pci_bus_get_irq_level(piix3->dev.bus, pirq));
+ }
return 0;
}
.name = "PIIX3/rcr",
.version_id = 1,
.minimum_version_id = 1,
+ .needed = piix3_rcr_needed,
.fields = (VMStateField[]) {
VMSTATE_UINT8(rcr, PIIX3State),
VMSTATE_END_OF_LIST()
PIIX_NUM_PIRQS, 3),
VMSTATE_END_OF_LIST()
},
- .subsections = (VMStateSubsection[]) {
- {
- .vmsd = &vmstate_piix3_rcr,
- .needed = piix3_rcr_needed,
- },
- { 0 }
+ .subsections = (const VMStateDescription*[]) {
+ &vmstate_piix3_rcr,
+ NULL
}
};
.endianness = DEVICE_LITTLE_ENDIAN
};
-static int piix3_initfn(PCIDevice *dev)
+static void piix3_realize(PCIDevice *dev, Error **errp)
{
- PIIX3State *d = DO_UPCAST(PIIX3State, dev, dev);
+ PIIX3State *d = PIIX3_PCI_DEVICE(dev);
- isa_bus_new(DEVICE(d), pci_address_space_io(dev));
+ if (!isa_bus_new(DEVICE(d), get_system_memory(),
+ pci_address_space_io(dev), errp)) {
+ return;
+ }
memory_region_init_io(&d->rcr_mem, OBJECT(dev), &rcr_ops, d,
"piix3-reset-control", 1);
&d->rcr_mem, 1);
qemu_register_reset(piix3_reset, d);
- return 0;
}
-static void piix3_class_init(ObjectClass *klass, void *data)
+static void pci_piix3_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
dc->desc = "ISA bridge";
dc->vmsd = &vmstate_piix3;
dc->hotpluggable = false;
- k->init = piix3_initfn;
- k->config_write = piix3_write_config;
+ k->realize = piix3_realize;
k->vendor_id = PCI_VENDOR_ID_INTEL;
/* 82371SB PIIX3 PCI-to-ISA bridge (Step A1) */
k->device_id = PCI_DEVICE_ID_INTEL_82371SB_0;
dc->cannot_instantiate_with_device_add_yet = true;
}
+static const TypeInfo piix3_pci_type_info = {
+ .name = TYPE_PIIX3_PCI_DEVICE,
+ .parent = TYPE_PCI_DEVICE,
+ .instance_size = sizeof(PIIX3State),
+ .abstract = true,
+ .class_init = pci_piix3_class_init,
+};
+
+static void piix3_class_init(ObjectClass *klass, void *data)
+{
+ PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
+
+ k->config_write = piix3_write_config;
+}
+
static const TypeInfo piix3_info = {
.name = "PIIX3",
- .parent = TYPE_PCI_DEVICE,
- .instance_size = sizeof(PIIX3State),
+ .parent = TYPE_PIIX3_PCI_DEVICE,
.class_init = piix3_class_init,
};
static void piix3_xen_class_init(ObjectClass *klass, void *data)
{
- DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
- dc->desc = "ISA bridge";
- dc->vmsd = &vmstate_piix3;
- dc->hotpluggable = false;
- k->init = piix3_initfn;
k->config_write = piix3_write_config_xen;
- k->vendor_id = PCI_VENDOR_ID_INTEL;
- /* 82371SB PIIX3 PCI-to-ISA bridge (Step A1) */
- k->device_id = PCI_DEVICE_ID_INTEL_82371SB_0;
- k->class_id = PCI_CLASS_BRIDGE_ISA;
- /*
- * Reason: part of PIIX3 southbridge, needs to be wired up by
- * pc_piix.c's pc_init1()
- */
- dc->cannot_instantiate_with_device_add_yet = true;
};
static const TypeInfo piix3_xen_info = {
.name = "PIIX3-xen",
- .parent = TYPE_PCI_DEVICE,
- .instance_size = sizeof(PIIX3State),
+ .parent = TYPE_PIIX3_PCI_DEVICE,
.class_init = piix3_xen_class_init,
};
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
- k->init = i440fx_initfn;
+ k->realize = i440fx_realize;
k->config_write = i440fx_write_config;
k->vendor_id = PCI_VENDOR_ID_INTEL;
k->device_id = PCI_DEVICE_ID_INTEL_82441;
.class_init = i440fx_class_init,
};
+/* IGD Passthrough Host Bridge. */
+typedef struct {
+ uint8_t offset;
+ uint8_t len;
+} IGDHostInfo;
+
+/* Here we just expose minimal host bridge offset subset. */
+static const IGDHostInfo igd_host_bridge_infos[] = {
+ {0x08, 2}, /* revision id */
+ {0x2c, 2}, /* sybsystem vendor id */
+ {0x2e, 2}, /* sybsystem id */
+ {0x50, 2}, /* SNB: processor graphics control register */
+ {0x52, 2}, /* processor graphics control register */
+ {0xa4, 4}, /* SNB: graphics base of stolen memory */
+ {0xa8, 4}, /* SNB: base of GTT stolen memory */
+};
+
+static int host_pci_config_read(int pos, int len, uint32_t *val)
+{
+ char path[PATH_MAX];
+ int config_fd;
+ ssize_t size = sizeof(path);
+ /* Access real host bridge. */
+ int rc = snprintf(path, size, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/%s",
+ 0, 0, 0, 0, "config");
+ int ret = 0;
+
+ if (rc >= size || rc < 0) {
+ return -ENODEV;
+ }
+
+ config_fd = open(path, O_RDWR);
+ if (config_fd < 0) {
+ return -ENODEV;
+ }
+
+ if (lseek(config_fd, pos, SEEK_SET) != pos) {
+ ret = -errno;
+ goto out;
+ }
+
+ do {
+ rc = read(config_fd, (uint8_t *)val, len);
+ } while (rc < 0 && (errno == EINTR || errno == EAGAIN));
+ if (rc != len) {
+ ret = -errno;
+ }
+
+out:
+ close(config_fd);
+ return ret;
+}
+
+static int igd_pt_i440fx_initfn(struct PCIDevice *pci_dev)
+{
+ uint32_t val = 0;
+ int rc, i, num;
+ int pos, len;
+
+ num = ARRAY_SIZE(igd_host_bridge_infos);
+ for (i = 0; i < num; i++) {
+ pos = igd_host_bridge_infos[i].offset;
+ len = igd_host_bridge_infos[i].len;
+ rc = host_pci_config_read(pos, len, &val);
+ if (rc) {
+ return -ENODEV;
+ }
+ pci_default_write_config(pci_dev, pos, val, len);
+ }
+
+ return 0;
+}
+
+static void igd_passthrough_i440fx_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
+
+ k->init = igd_pt_i440fx_initfn;
+ dc->desc = "IGD Passthrough Host bridge";
+}
+
+static const TypeInfo igd_passthrough_i440fx_info = {
+ .name = TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE,
+ .parent = TYPE_I440FX_PCI_DEVICE,
+ .instance_size = sizeof(PCII440FXState),
+ .class_init = igd_passthrough_i440fx_class_init,
+};
+
static const char *i440fx_pcihost_root_bus_path(PCIHostState *host_bridge,
PCIBus *rootbus)
{
dc->realize = i440fx_pcihost_realize;
dc->fw_name = "pci";
dc->props = i440fx_props;
+ /* Reason: needs to be wired up by pc_init1 */
+ dc->cannot_instantiate_with_device_add_yet = true;
}
static const TypeInfo i440fx_pcihost_info = {
static void i440fx_register_types(void)
{
type_register_static(&i440fx_info);
+ type_register_static(&igd_passthrough_i440fx_info);
+ type_register_static(&piix3_pci_type_info);
type_register_static(&piix3_info);
type_register_static(&piix3_xen_info);
type_register_static(&i440fx_pcihost_info);
projects / qemu.git / blobdiff