* 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"
typedef struct I440FXState {
PCIHostState parent_obj;
- PcPciInfo pci_info;
+ Range pci_hole;
uint64_t pci_hole64_size;
+ bool pci_hole64_fix;
uint32_t short_root_bus;
} I440FXState;
#define XEN_PIIX_NUM_PIRQS 128ULL
#define PIIX_PIRQC 0x60
-/*
- * Reset Control Register: PCI-accessible ISA-Compatible Register at address
- * 0xcf9, provided by the PCI/ISA bridge (PIIX3 PCI function 0, 8086:7000).
- */
-#define RCR_IOPORT 0xcf9
-
typedef struct PIIX3State {
PCIDevice dev;
#define I440FX_PAM_SIZE 7
#define I440FX_SMRAM 0x72
+/* Keep it 2G to comply with older win32 guests */
+#define I440FX_PCI_HOST_HOLE64_SIZE_DEFAULT (1ULL << 31)
+
/* 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.
*/
memory_region_transaction_begin();
for (i = 0; i < 13; i++) {
pam_update(&d->pam_regions[i], i,
- pd->config[I440FX_PAM + ((i + 1) / 2)]);
+ pd->config[I440FX_PAM + (DIV_ROUND_UP(i, 2))]);
}
memory_region_set_enabled(&d->smram_region,
!(pd->config[I440FX_SMRAM] & SMRAM_D_OPEN));
};
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);
}
+/*
+ * The 64bit PCI hole start is set by the Guest firmware
+ * as the address of the first 64bit PCI MEM resource.
+ * If no PCI device has resources on the 64bit area,
+ * the 64bit PCI hole will start after "over 4G RAM" and the
+ * reserved space for memory hotplug if any.
+ */
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);
+ I440FXState *s = I440FX_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);
+ if (!value && s->pci_hole64_fix) {
+ value = pc_pci_hole64_start();
+ }
+ visit_type_uint64(v, name, &value, errp);
}
+/*
+ * The 64bit PCI hole end is set by the Guest firmware
+ * as the address of the last 64bit PCI MEM resource.
+ * Then it is expanded to the PCI_HOST_PROP_PCI_HOLE64_SIZE
+ * that can be configured by the user.
+ */
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);
+ I440FXState *s = I440FX_PCI_HOST_BRIDGE(obj);
+ uint64_t hole64_start = pc_pci_hole64_start();
Range w64;
+ uint64_t value, hole64_end;
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;
+ hole64_end = ROUND_UP(hole64_start + s->pci_hole64_size, 1ULL << 30);
+ if (s->pci_hole64_fix && value < hole64_end) {
+ value = hole64_end;
+ }
+ 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);
memory_region_init_io(&s->data_mem, obj, &pci_host_data_le_ops, s,
"pci-conf-data", 4);
- object_property_add(obj, PCI_HOST_PROP_PCI_HOLE_START, "int",
+ object_property_add(obj, PCI_HOST_PROP_PCI_HOLE_START, "uint32",
i440fx_pcihost_get_pci_hole_start,
NULL, NULL, NULL, NULL);
- object_property_add(obj, PCI_HOST_PROP_PCI_HOLE_END, "int",
+ object_property_add(obj, PCI_HOST_PROP_PCI_HOLE_END, "uint32",
i440fx_pcihost_get_pci_hole_end,
NULL, NULL, NULL, NULL);
- object_property_add(obj, PCI_HOST_PROP_PCI_HOLE64_START, "int",
+ object_property_add(obj, PCI_HOST_PROP_PCI_HOLE64_START, "uint64",
i440fx_pcihost_get_pci_hole64_start,
NULL, NULL, NULL, NULL);
- object_property_add(obj, PCI_HOST_PROP_PCI_HOLE64_END, "int",
+ object_property_add(obj, PCI_HOST_PROP_PCI_HOLE64_END, "uint64",
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)
dev->config[I440FX_SMRAM] = 0x02;
if (object_property_get_bool(qdev_get_machine(), "iommu", NULL)) {
- error_report("warning: i440fx doesn't support emulated iommu");
+ warn_report("i440fx doesn't support emulated iommu");
}
}
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);
+ b = pci_root_bus_new(dev, NULL, pci_address_space,
+ address_space_io, 0, TYPE_PCI_BUS);
s->bus = b;
object_property_add_child(qdev_get_machine(), "i440fx", OBJECT(dev), NULL);
qdev_init_nofail(dev);
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,
/* irq routing is changed. so rebuild bitmap */
static void piix3_update_irq_levels(PIIX3State *piix3)
{
+ PCIBus *bus = pci_get_bus(&piix3->dev);
int pirq;
piix3->pic_levels = 0;
for (pirq = 0; pirq < PIIX_NUM_PIRQS; pirq++) {
- piix3_set_irq_level(piix3, pirq,
- pci_bus_get_irq_level(piix3->dev.bus, pirq));
+ piix3_set_irq_level(piix3, pirq, pci_bus_get_irq_level(bus, pirq));
}
}
PIIX3State *piix3 = PIIX3_PCI_DEVICE(dev);
int pic_irq;
- pci_bus_fire_intx_routing_notifier(piix3->dev.bus);
+ pci_bus_fire_intx_routing_notifier(pci_get_bus(&piix3->dev));
piix3_update_irq_levels(piix3);
for (pic_irq = 0; pic_irq < PIIX_NUM_PIC_IRQS; pic_irq++) {
piix3_set_irq_pic(piix3, pic_irq);
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));
+ pci_bus_get_irq_level(pci_get_bus(&piix3->dev), pirq));
}
return 0;
}
-static void piix3_pre_save(void *opaque)
+static int piix3_pre_save(void *opaque)
{
int i;
PIIX3State *piix3 = opaque;
for (i = 0; i < ARRAY_SIZE(piix3->pci_irq_levels_vmstate); i++) {
piix3->pci_irq_levels_vmstate[i] =
- pci_bus_get_irq_level(piix3->dev.bus, i);
+ pci_bus_get_irq_level(pci_get_bus(&piix3->dev), i);
}
+
+ return 0;
}
static bool piix3_rcr_needed(void *opaque)
PIIX3State *d = opaque;
if (val & 4) {
- qemu_system_reset_request();
+ qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
return;
}
d->rcr = val & 2; /* keep System Reset type only */
{
PIIX3State *d = PIIX3_PCI_DEVICE(dev);
- isa_bus_new(DEVICE(d), get_system_memory(),
- 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);
* 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;
+ dc->user_creatable = false;
}
static const TypeInfo piix3_pci_type_info = {
.instance_size = sizeof(PIIX3State),
.abstract = true,
.class_init = pci_piix3_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { INTERFACE_CONVENTIONAL_PCI_DEVICE },
+ { },
+ },
};
static void piix3_class_init(ObjectClass *klass, void *data)
* PCI-facing part of the host bridge, not usable without the
* host-facing part, which can't be device_add'ed, yet.
*/
- dc->cannot_instantiate_with_device_add_yet = true;
+ dc->user_creatable = false;
dc->hotpluggable = false;
}
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(PCII440FXState),
.class_init = i440fx_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { INTERFACE_CONVENTIONAL_PCI_DEVICE },
+ { },
+ },
};
/* IGD Passthrough Host Bridge. */
{0xa8, 4}, /* SNB: base of GTT stolen memory */
};
-static int host_pci_config_read(int pos, int len, uint32_t val)
+static void host_pci_config_read(int pos, int len, uint32_t *val, Error **errp)
{
- char path[PATH_MAX];
- int config_fd;
- ssize_t size = sizeof(path);
+ int rc, config_fd;
/* 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;
- }
+ char *path = g_strdup_printf("/sys/bus/pci/devices/%04x:%02x:%02x.%d/%s",
+ 0, 0, 0, 0, "config");
config_fd = open(path, O_RDWR);
if (config_fd < 0) {
- return -ENODEV;
+ error_setg_errno(errp, errno, "Failed to open: %s", path);
+ goto out;
}
if (lseek(config_fd, pos, SEEK_SET) != pos) {
- ret = -errno;
- goto out;
+ error_setg_errno(errp, errno, "Failed to seek: %s", path);
+ goto out_close_fd;
}
+
do {
- rc = read(config_fd, (uint8_t *)&val, len);
+ rc = read(config_fd, (uint8_t *)val, len);
} while (rc < 0 && (errno == EINTR || errno == EAGAIN));
if (rc != len) {
- ret = -errno;
+ error_setg_errno(errp, errno, "Failed to read: %s", path);
}
-out:
+
+out_close_fd:
close(config_fd);
- return ret;
+out:
+ g_free(path);
}
-static int igd_pt_i440fx_initfn(struct PCIDevice *pci_dev)
+static void igd_pt_i440fx_realize(PCIDevice *pci_dev, Error **errp)
{
uint32_t val = 0;
- int rc, i, num;
+ int i, num;
int pos, len;
+ Error *local_err = NULL;
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;
+ host_pci_config_read(pos, len, &val, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return;
}
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;
+ k->realize = igd_pt_i440fx_realize;
dc->desc = "IGD Passthrough Host bridge";
}
static Property i440fx_props[] = {
DEFINE_PROP_SIZE(PCI_HOST_PROP_PCI_HOLE64_SIZE, I440FXState,
- pci_hole64_size, DEFAULT_PCI_HOLE64_SIZE),
+ pci_hole64_size, I440FX_PCI_HOST_HOLE64_SIZE_DEFAULT),
DEFINE_PROP_UINT32("short_root_bus", I440FXState, short_root_bus, 0),
+ DEFINE_PROP_BOOL("x-pci-hole64-fix", I440FXState, pci_hole64_fix, true),
DEFINE_PROP_END_OF_LIST(),
};
dc->realize = i440fx_pcihost_realize;
dc->fw_name = "pci";
dc->props = i440fx_props;
+ /* Reason: needs to be wired up by pc_init1 */
+ dc->user_creatable = false;
}
static const TypeInfo i440fx_pcihost_info = {
projects / mirror_qemu.git / blobdiff