/* PCIe MMCFG */
static void mch_update_pciexbar(MCHPCIState *mch)
{
PCIDevice *pci_dev = PCI_DEVICE(mch);
BusState *bus = qdev_get_parent_bus(DEVICE(mch));
PCIExpressHost *pehb = PCIE_HOST_BRIDGE(bus->parent);
uint64_t pciexbar;
int enable;
uint64_t addr;
uint64_t addr_mask;
uint32_t length;
pciexbar = pci_get_quad(pci_dev->config + MCH_HOST_BRIDGE_PCIEXBAR);
enable = pciexbar & MCH_HOST_BRIDGE_PCIEXBAREN;
addr_mask = MCH_HOST_BRIDGE_PCIEXBAR_ADMSK;
switch (pciexbar & MCH_HOST_BRIDGE_PCIEXBAR_LENGTH_MASK) {
case MCH_HOST_BRIDGE_PCIEXBAR_LENGTH_256M:
length = 256 * 1024 * 1024;
break;
case MCH_HOST_BRIDGE_PCIEXBAR_LENGTH_128M:
length = 128 * 1024 * 1024;
addr_mask |= MCH_HOST_BRIDGE_PCIEXBAR_128ADMSK |
MCH_HOST_BRIDGE_PCIEXBAR_64ADMSK;
break;
case MCH_HOST_BRIDGE_PCIEXBAR_LENGTH_64M:
length = 64 * 1024 * 1024;
addr_mask |= MCH_HOST_BRIDGE_PCIEXBAR_64ADMSK;
break;
case MCH_HOST_BRIDGE_PCIEXBAR_LENGTH_RVD:
default:
abort();
}
addr = pciexbar & addr_mask;
pcie_host_mmcfg_update(pehb, enable, addr, length);
/* Leave enough space for the MCFG BAR */
/*
* TODO: this matches current bios behaviour, but it's not a power of two,
* which means an MTRR can't cover it exactly.
*/
if (enable) {
range_set_bounds(&mch->pci_hole,
addr + length,
IO_APIC_DEFAULT_ADDRESS - 1);
} else {
range_set_bounds(&mch->pci_hole,
MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT,
IO_APIC_DEFAULT_ADDRESS - 1);
}
}
static void string_output_append(StringOutputVisitor *sov, int64_t a)
{
Range *r = g_malloc0(sizeof(*r));
range_set_bounds(r, a, a);
sov->ranges = range_list_insert(sov->ranges, r);
}
static void q35_host_initfn(Object *obj)
{
Q35PCIHost *s = Q35_HOST_DEVICE(obj);
PCIHostState *phb = PCI_HOST_BRIDGE(obj);
memory_region_init_io(&phb->conf_mem, obj, &pci_host_conf_le_ops, phb,
"pci-conf-idx", 4);
memory_region_init_io(&phb->data_mem, obj, &pci_host_data_le_ops, phb,
"pci-conf-data", 4);
object_initialize(&s->mch, sizeof(s->mch), TYPE_MCH_PCI_DEVICE);
object_property_add_child(OBJECT(s), "mch", OBJECT(&s->mch), NULL);
qdev_prop_set_uint32(DEVICE(&s->mch), "addr", PCI_DEVFN(0, 0));
qdev_prop_set_bit(DEVICE(&s->mch), "multifunction", false);
object_property_add(obj, PCI_HOST_PROP_PCI_HOLE_START, "int",
q35_host_get_pci_hole_start,
NULL, NULL, NULL, NULL);
object_property_add(obj, PCI_HOST_PROP_PCI_HOLE_END, "int",
q35_host_get_pci_hole_end,
NULL, NULL, NULL, NULL);
object_property_add(obj, PCI_HOST_PROP_PCI_HOLE64_START, "int",
q35_host_get_pci_hole64_start,
NULL, NULL, NULL, NULL);
object_property_add(obj, PCI_HOST_PROP_PCI_HOLE64_END, "int",
q35_host_get_pci_hole64_end,
NULL, NULL, NULL, NULL);
object_property_add(obj, PCIE_HOST_MCFG_SIZE, "int",
q35_host_get_mmcfg_size,
NULL, NULL, NULL, NULL);
object_property_add_link(obj, MCH_HOST_PROP_RAM_MEM, TYPE_MEMORY_REGION,
(Object **) &s->mch.ram_memory,
qdev_prop_allow_set_link_before_realize, 0, NULL);
object_property_add_link(obj, MCH_HOST_PROP_PCI_MEM, TYPE_MEMORY_REGION,
(Object **) &s->mch.pci_address_space,
qdev_prop_allow_set_link_before_realize, 0, NULL);
object_property_add_link(obj, MCH_HOST_PROP_SYSTEM_MEM, TYPE_MEMORY_REGION,
(Object **) &s->mch.system_memory,
qdev_prop_allow_set_link_before_realize, 0, NULL);
object_property_add_link(obj, MCH_HOST_PROP_IO_MEM, TYPE_MEMORY_REGION,
(Object **) &s->mch.address_space_io,
qdev_prop_allow_set_link_before_realize, 0, NULL);
/* Leave enough space for the biggest MCFG BAR */
/* TODO: this matches current bios behaviour, but
* it's not a power of two, which means an MTRR
* can't cover it exactly.
*/
range_set_bounds(&s->mch.pci_hole,
MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT + MCH_HOST_BRIDGE_PCIEXBAR_MAX,
IO_APIC_DEFAULT_ADDRESS - 1);
}
static int parse_str(StringInputVisitor *siv, const char *name, Error **errp)
{
char *str = (char *) siv->string;
long long start, end;
Range *cur;
char *endptr;
if (siv->ranges) {
return 0;
}
do {
errno = 0;
start = strtoll(str, &endptr, 0);
if (errno == 0 && endptr > str) {
if (*endptr == '\0') {
cur = g_malloc0(sizeof(*cur));
range_set_bounds(cur, start, start);
siv->ranges = range_list_insert(siv->ranges, cur);
cur = NULL;
str = NULL;
} else if (*endptr == '-') {
str = endptr + 1;
errno = 0;
end = strtoll(str, &endptr, 0);
if (errno == 0 && endptr > str && start <= end &&
(start > INT64_MAX - 65536 ||
end < start + 65536)) {
if (*endptr == '\0') {
cur = g_malloc0(sizeof(*cur));
range_set_bounds(cur, start, end);
siv->ranges = range_list_insert(siv->ranges, cur);
cur = NULL;
str = NULL;
} else if (*endptr == ',') {
str = endptr + 1;
cur = g_malloc0(sizeof(*cur));
range_set_bounds(cur, start, end);
siv->ranges = range_list_insert(siv->ranges, cur);
cur = NULL;
} else {
goto error;
}
} else {
goto error;
}
} else if (*endptr == ',') {
str = endptr + 1;
cur = g_malloc0(sizeof(*cur));
range_set_bounds(cur, start, start);
siv->ranges = range_list_insert(siv->ranges, cur);
cur = NULL;
} else {
goto error;
}
} else {
goto error;
}
} while (str);
return 0;
error:
g_list_foreach(siv->ranges, free_range, NULL);
g_list_free(siv->ranges);
siv->ranges = NULL;
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
"an int64 value or range");
return -1;
}
void qemu_set_dfilter_ranges(const char *filter_spec, Error **errp)
{
gchar **ranges = g_strsplit(filter_spec, ",", 0);
int i;
if (debug_regions) {
g_array_unref(debug_regions);
debug_regions = NULL;
}
debug_regions = g_array_sized_new(FALSE, FALSE,
sizeof(Range), g_strv_length(ranges));
for (i = 0; ranges[i]; i++) {
const char *r = ranges[i];
const char *range_op, *r2, *e;
uint64_t r1val, r2val, lob, upb;
struct Range range;
range_op = strstr(r, "-");
r2 = range_op ? range_op + 1 : NULL;
if (!range_op) {
range_op = strstr(r, "+");
r2 = range_op ? range_op + 1 : NULL;
}
if (!range_op) {
range_op = strstr(r, "..");
r2 = range_op ? range_op + 2 : NULL;
}
if (!range_op) {
error_setg(errp, "Bad range specifier");
goto out;
}
if (qemu_strtoull(r, &e, 0, &r1val)
|| e != range_op) {
error_setg(errp, "Invalid number to the left of %.*s",
(int)(r2 - range_op), range_op);
goto out;
}
if (qemu_strtoull(r2, NULL, 0, &r2val)) {
error_setg(errp, "Invalid number to the right of %.*s",
(int)(r2 - range_op), range_op);
goto out;
}
switch (*range_op) {
case '+':
lob = r1val;
upb = r1val + r2val - 1;
break;
case '-':
upb = r1val;
lob = r1val - (r2val - 1);
break;
case '.':
lob = r1val;
upb = r2val;
break;
default:
g_assert_not_reached();
}
if (lob > upb) {
error_setg(errp, "Invalid range");
goto out;
}
range_set_bounds(&range, lob, upb);
g_array_append_val(debug_regions, range);
}
out:
g_strfreev(ranges);
}