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-rw-r--r--hw/q35.c310
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diff --git a/hw/q35.c b/hw/q35.c
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--- a/hw/q35.c
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-/*
- * QEMU MCH/ICH9 PCI Bridge Emulation
- *
- * Copyright (c) 2006 Fabrice Bellard
- * Copyright (c) 2009, 2010, 2011
- * Isaku Yamahata <yamahata at valinux co jp>
- * VA Linux Systems Japan K.K.
- * Copyright (C) 2012 Jason Baron <jbaron@redhat.com>
- *
- * This is based on piix_pci.c, but heavily modified.
- *
- * 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 "hw/hw.h"
-#include "hw/q35.h"
-
-/****************************************************************************
- * Q35 host
- */
-
-static int q35_host_init(SysBusDevice *dev)
-{
- PCIBus *b;
- PCIHostState *pci = FROM_SYSBUS(PCIHostState, dev);
- Q35PCIHost *s = Q35_HOST_DEVICE(&dev->qdev);
-
- memory_region_init_io(&pci->conf_mem, &pci_host_conf_le_ops, pci,
- "pci-conf-idx", 4);
- sysbus_add_io(dev, MCH_HOST_BRIDGE_CONFIG_ADDR, &pci->conf_mem);
- sysbus_init_ioports(&pci->busdev, MCH_HOST_BRIDGE_CONFIG_ADDR, 4);
-
- memory_region_init_io(&pci->data_mem, &pci_host_data_le_ops, pci,
- "pci-conf-data", 4);
- sysbus_add_io(dev, MCH_HOST_BRIDGE_CONFIG_DATA, &pci->data_mem);
- sysbus_init_ioports(&pci->busdev, MCH_HOST_BRIDGE_CONFIG_DATA, 4);
-
- if (pcie_host_init(&s->host) < 0) {
- return -1;
- }
- b = pci_bus_new(&s->host.pci.busdev.qdev, "pcie.0",
- s->mch.pci_address_space, s->mch.address_space_io,
- 0, TYPE_PCIE_BUS);
- s->host.pci.bus = b;
- qdev_set_parent_bus(DEVICE(&s->mch), BUS(b));
- qdev_init_nofail(DEVICE(&s->mch));
-
- return 0;
-}
-
-static Property mch_props[] = {
- DEFINE_PROP_UINT64("MCFG", Q35PCIHost, host.base_addr,
- MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT),
- DEFINE_PROP_END_OF_LIST(),
-};
-
-static void q35_host_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
-
- k->init = q35_host_init;
- dc->props = mch_props;
-}
-
-static void q35_host_initfn(Object *obj)
-{
- Q35PCIHost *s = Q35_HOST_DEVICE(obj);
-
- object_initialize(&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);
-}
-
-static const TypeInfo q35_host_info = {
- .name = TYPE_Q35_HOST_DEVICE,
- .parent = TYPE_PCIE_HOST_BRIDGE,
- .instance_size = sizeof(Q35PCIHost),
- .instance_init = q35_host_initfn,
- .class_init = q35_host_class_init,
-};
-
-/****************************************************************************
- * MCH D0:F0
- */
-
-/* PCIe MMCFG */
-static void mch_update_pciexbar(MCHPCIState *mch)
-{
- PCIDevice *pci_dev = &mch->d;
- BusState *bus = qdev_get_parent_bus(&pci_dev->qdev);
- DeviceState *qdev = bus->parent;
- Q35PCIHost *s = Q35_HOST_DEVICE(qdev);
-
- 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:
- enable = 0;
- length = 0;
- abort();
- break;
- }
- addr = pciexbar & addr_mask;
- pcie_host_mmcfg_update(&s->host, enable, addr, length);
-}
-
-/* PAM */
-static void mch_update_pam(MCHPCIState *mch)
-{
- int i;
-
- memory_region_transaction_begin();
- for (i = 0; i < 13; i++) {
- pam_update(&mch->pam_regions[i], i,
- mch->d.config[MCH_HOST_BRIDGE_PAM0 + ((i + 1) / 2)]);
- }
- memory_region_transaction_commit();
-}
-
-/* SMRAM */
-static void mch_update_smram(MCHPCIState *mch)
-{
- memory_region_transaction_begin();
- smram_update(&mch->smram_region, mch->d.config[MCH_HOST_BRDIGE_SMRAM],
- mch->smm_enabled);
- memory_region_transaction_commit();
-}
-
-static void mch_set_smm(int smm, void *arg)
-{
- MCHPCIState *mch = arg;
-
- memory_region_transaction_begin();
- smram_set_smm(&mch->smm_enabled, smm, mch->d.config[MCH_HOST_BRDIGE_SMRAM],
- &mch->smram_region);
- memory_region_transaction_commit();
-}
-
-static void mch_write_config(PCIDevice *d,
- uint32_t address, uint32_t val, int len)
-{
- MCHPCIState *mch = MCH_PCI_DEVICE(d);
-
- /* XXX: implement SMRAM.D_LOCK */
- 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_BRDIGE_SMRAM,
- MCH_HOST_BRDIGE_SMRAM_SIZE)) {
- mch_update_smram(mch);
- }
-}
-
-static void mch_update(MCHPCIState *mch)
-{
- mch_update_pciexbar(mch);
- mch_update_pam(mch);
- mch_update_smram(mch);
-}
-
-static int mch_post_load(void *opaque, int version_id)
-{
- MCHPCIState *mch = opaque;
- mch_update(mch);
- return 0;
-}
-
-static const VMStateDescription vmstate_mch = {
- .name = "mch",
- .version_id = 1,
- .minimum_version_id = 1,
- .minimum_version_id_old = 1,
- .post_load = mch_post_load,
- .fields = (VMStateField []) {
- VMSTATE_PCI_DEVICE(d, MCHPCIState),
- VMSTATE_UINT8(smm_enabled, MCHPCIState),
- VMSTATE_END_OF_LIST()
- }
-};
-
-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);
-
- /* setup pci memory regions */
- memory_region_init_alias(&mch->pci_hole, "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, "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, "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(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(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_class_init(ObjectClass *klass, void *data)
-{
- PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
- DeviceClass *dc = DEVICE_CLASS(klass);
-
- k->init = mch_init;
- k->config_write = mch_write_config;
- dc->reset = mch_reset;
- dc->desc = "Host bridge";
- dc->vmsd = &vmstate_mch;
- k->vendor_id = PCI_VENDOR_ID_INTEL;
- k->device_id = PCI_DEVICE_ID_INTEL_Q35_MCH;
- k->revision = MCH_HOST_BRIDGE_REVISION_DEFUALT;
- k->class_id = PCI_CLASS_BRIDGE_HOST;
-}
-
-static const TypeInfo mch_info = {
- .name = TYPE_MCH_PCI_DEVICE,
- .parent = TYPE_PCI_DEVICE,
- .instance_size = sizeof(MCHPCIState),
- .class_init = mch_class_init,
-};
-
-static void q35_register(void)
-{
- type_register_static(&mch_info);
- type_register_static(&q35_host_info);
-}
-
-type_init(q35_register);
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