static int mch_init(PCIDevice *d)
{
int i;
MCHPCIState *mch = MCH_PCI_DEVICE(d);
/* setup pci memory mapping */
pc_pci_as_mapping_init(OBJECT(mch), mch->system_memory,
mch->pci_address_space);
/* smram */
cpu_smm_register(&mch_set_smm, mch);
memory_region_init_alias(&mch->smram_region, OBJECT(mch), "smram-region",
mch->pci_address_space, 0xa0000, 0x20000);
memory_region_add_subregion_overlap(mch->system_memory, 0xa0000,
&mch->smram_region, 1);
memory_region_set_enabled(&mch->smram_region, false);
init_pam(DEVICE(mch), mch->ram_memory, mch->system_memory,
mch->pci_address_space, &mch->pam_regions[0],
PAM_BIOS_BASE, PAM_BIOS_SIZE);
for (i = 0; i < 12; ++i) {
init_pam(DEVICE(mch), mch->ram_memory, mch->system_memory,
mch->pci_address_space, &mch->pam_regions[i+1],
PAM_EXPAN_BASE + i * PAM_EXPAN_SIZE, PAM_EXPAN_SIZE);
}
/* Intel IOMMU (VT-d) */
if (qemu_opt_get_bool(qemu_get_machine_opts(), "iommu", false)) {
mch_init_dmar(mch);
}
return 0;
}
static void mch_realize(PCIDevice *d, Error **errp)
{
int i;
MCHPCIState *mch = MCH_PCI_DEVICE(d);
/* setup pci memory mapping */
pc_pci_as_mapping_init(OBJECT(mch), mch->system_memory,
mch->pci_address_space);
/* if *disabled* show SMRAM to all CPUs */
memory_region_init_alias(&mch->smram_region, OBJECT(mch), "smram-region",
mch->pci_address_space, 0xa0000, 0x20000);
memory_region_add_subregion_overlap(mch->system_memory, 0xa0000,
&mch->smram_region, 1);
memory_region_set_enabled(&mch->smram_region, true);
memory_region_init_alias(&mch->open_high_smram, OBJECT(mch), "smram-open-high",
mch->ram_memory, 0xa0000, 0x20000);
memory_region_add_subregion_overlap(mch->system_memory, 0xfeda0000,
&mch->open_high_smram, 1);
memory_region_set_enabled(&mch->open_high_smram, false);
/* smram, as seen by SMM CPUs */
memory_region_init(&mch->smram, OBJECT(mch), "smram", 1ull << 32);
memory_region_set_enabled(&mch->smram, true);
memory_region_init_alias(&mch->low_smram, OBJECT(mch), "smram-low",
mch->ram_memory, 0xa0000, 0x20000);
memory_region_set_enabled(&mch->low_smram, true);
memory_region_add_subregion(&mch->smram, 0xa0000, &mch->low_smram);
memory_region_init_alias(&mch->high_smram, OBJECT(mch), "smram-high",
mch->ram_memory, 0xa0000, 0x20000);
memory_region_set_enabled(&mch->high_smram, true);
memory_region_add_subregion(&mch->smram, 0xfeda0000, &mch->high_smram);
memory_region_init_io(&mch->tseg_blackhole, OBJECT(mch),
&tseg_blackhole_ops, NULL,
"tseg-blackhole", 0);
memory_region_set_enabled(&mch->tseg_blackhole, false);
memory_region_add_subregion_overlap(mch->system_memory,
mch->below_4g_mem_size,
&mch->tseg_blackhole, 1);
memory_region_init_alias(&mch->tseg_window, OBJECT(mch), "tseg-window",
mch->ram_memory, mch->below_4g_mem_size, 0);
memory_region_set_enabled(&mch->tseg_window, false);
memory_region_add_subregion(&mch->smram, mch->below_4g_mem_size,
&mch->tseg_window);
object_property_add_const_link(qdev_get_machine(), "smram",
OBJECT(&mch->smram), &error_abort);
init_pam(DEVICE(mch), mch->ram_memory, mch->system_memory,
mch->pci_address_space, &mch->pam_regions[0],
PAM_BIOS_BASE, PAM_BIOS_SIZE);
for (i = 0; i < 12; ++i) {
init_pam(DEVICE(mch), mch->ram_memory, mch->system_memory,
mch->pci_address_space, &mch->pam_regions[i+1],
PAM_EXPAN_BASE + i * PAM_EXPAN_SIZE, PAM_EXPAN_SIZE);
}
}
static void mch_reset(DeviceState *qdev)
{
PCIDevice *d = PCI_DEVICE(qdev);
MCHPCIState *mch = MCH_PCI_DEVICE(d);
pci_set_quad(d->config + MCH_HOST_BRIDGE_PCIEXBAR,
MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT);
d->config[MCH_HOST_BRDIGE_SMRAM] = MCH_HOST_BRIDGE_SMRAM_DEFAULT;
mch_update(mch);
}
static int mch_init(PCIDevice *d)
{
int i;
hwaddr pci_hole64_size;
MCHPCIState *mch = MCH_PCI_DEVICE(d);
/* 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.
*/
mch->guest_info->pci_info.w32.begin = MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT +
MCH_HOST_BRIDGE_PCIEXBAR_MAX;
/* setup pci memory regions */
memory_region_init_alias(&mch->pci_hole, OBJECT(mch), "pci-hole",
mch->pci_address_space,
mch->below_4g_mem_size,
0x100000000ULL - mch->below_4g_mem_size);
memory_region_add_subregion(mch->system_memory, mch->below_4g_mem_size,
&mch->pci_hole);
pci_hole64_size = (sizeof(hwaddr) == 4 ? 0 :
((uint64_t)1 << 62));
memory_region_init_alias(&mch->pci_hole_64bit, OBJECT(mch), "pci-hole64",
mch->pci_address_space,
0x100000000ULL + mch->above_4g_mem_size,
pci_hole64_size);
if (pci_hole64_size) {
memory_region_add_subregion(mch->system_memory,
0x100000000ULL + mch->above_4g_mem_size,
&mch->pci_hole_64bit);
}
/* smram */
cpu_smm_register(&mch_set_smm, mch);
memory_region_init_alias(&mch->smram_region, OBJECT(mch), "smram-region",
mch->pci_address_space, 0xa0000, 0x20000);
memory_region_add_subregion_overlap(mch->system_memory, 0xa0000,
&mch->smram_region, 1);
memory_region_set_enabled(&mch->smram_region, false);
init_pam(DEVICE(mch), mch->ram_memory, mch->system_memory, mch->pci_address_space,
&mch->pam_regions[0], PAM_BIOS_BASE, PAM_BIOS_SIZE);
for (i = 0; i < 12; ++i) {
init_pam(DEVICE(mch), mch->ram_memory, mch->system_memory, mch->pci_address_space,
&mch->pam_regions[i+1], PAM_EXPAN_BASE + i * PAM_EXPAN_SIZE,
PAM_EXPAN_SIZE);
}
return 0;
}
static int mch_init(PCIDevice *d)
{
int i;
MCHPCIState *mch = MCH_PCI_DEVICE(d);
uint64_t pci_hole64_size;
/* setup pci memory regions */
memory_region_init_alias(&mch->pci_hole, OBJECT(mch), "pci-hole",
mch->pci_address_space,
mch->below_4g_mem_size,
0x100000000ULL - mch->below_4g_mem_size);
memory_region_add_subregion(mch->system_memory, mch->below_4g_mem_size,
&mch->pci_hole);
pci_hole64_size = pci_host_get_hole64_size(mch->pci_hole64_size);
pc_init_pci64_hole(&mch->pci_info, 0x100000000ULL + mch->above_4g_mem_size,
pci_hole64_size);
memory_region_init_alias(&mch->pci_hole_64bit, OBJECT(mch), "pci-hole64",
mch->pci_address_space,
mch->pci_info.w64.begin,
pci_hole64_size);
if (pci_hole64_size) {
memory_region_add_subregion(mch->system_memory,
mch->pci_info.w64.begin,
&mch->pci_hole_64bit);
}
/* smram */
cpu_smm_register(&mch_set_smm, mch);
memory_region_init_alias(&mch->smram_region, OBJECT(mch), "smram-region",
mch->pci_address_space, 0xa0000, 0x20000);
memory_region_add_subregion_overlap(mch->system_memory, 0xa0000,
&mch->smram_region, 1);
memory_region_set_enabled(&mch->smram_region, false);
init_pam(DEVICE(mch), mch->ram_memory, mch->system_memory, mch->pci_address_space,
&mch->pam_regions[0], PAM_BIOS_BASE, PAM_BIOS_SIZE);
for (i = 0; i < 12; ++i) {
init_pam(DEVICE(mch), mch->ram_memory, mch->system_memory, mch->pci_address_space,
&mch->pam_regions[i+1], PAM_EXPAN_BASE + i * PAM_EXPAN_SIZE,
PAM_EXPAN_SIZE);
}
return 0;
}
static void mch_write_config(PCIDevice *d,
uint32_t address, uint32_t val, int len)
{
MCHPCIState *mch = MCH_PCI_DEVICE(d);
pci_default_write_config(d, address, val, len);
if (ranges_overlap(address, len, MCH_HOST_BRIDGE_PAM0,
MCH_HOST_BRIDGE_PAM_SIZE)) {
mch_update_pam(mch);
}
if (ranges_overlap(address, len, MCH_HOST_BRIDGE_PCIEXBAR,
MCH_HOST_BRIDGE_PCIEXBAR_SIZE)) {
mch_update_pciexbar(mch);
}
if (ranges_overlap(address, len, MCH_HOST_BRIDGE_SMRAM,
MCH_HOST_BRIDGE_SMRAM_SIZE)) {
mch_update_smram(mch);
}
}