1c0907c9eSPaolo Bonzini /* 2c0907c9eSPaolo Bonzini * QEMU MCH/ICH9 PCI Bridge Emulation 3c0907c9eSPaolo Bonzini * 4c0907c9eSPaolo Bonzini * Copyright (c) 2006 Fabrice Bellard 5c0907c9eSPaolo Bonzini * Copyright (c) 2009, 2010, 2011 6c0907c9eSPaolo Bonzini * Isaku Yamahata <yamahata at valinux co jp> 7c0907c9eSPaolo Bonzini * VA Linux Systems Japan K.K. 8c0907c9eSPaolo Bonzini * Copyright (C) 2012 Jason Baron <jbaron@redhat.com> 9c0907c9eSPaolo Bonzini * 10c0907c9eSPaolo Bonzini * This is based on piix_pci.c, but heavily modified. 11c0907c9eSPaolo Bonzini * 12c0907c9eSPaolo Bonzini * Permission is hereby granted, free of charge, to any person obtaining a copy 13c0907c9eSPaolo Bonzini * of this software and associated documentation files (the "Software"), to deal 14c0907c9eSPaolo Bonzini * in the Software without restriction, including without limitation the rights 15c0907c9eSPaolo Bonzini * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 16c0907c9eSPaolo Bonzini * copies of the Software, and to permit persons to whom the Software is 17c0907c9eSPaolo Bonzini * furnished to do so, subject to the following conditions: 18c0907c9eSPaolo Bonzini * 19c0907c9eSPaolo Bonzini * The above copyright notice and this permission notice shall be included in 20c0907c9eSPaolo Bonzini * all copies or substantial portions of the Software. 21c0907c9eSPaolo Bonzini * 22c0907c9eSPaolo Bonzini * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 23c0907c9eSPaolo Bonzini * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 24c0907c9eSPaolo Bonzini * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 25c0907c9eSPaolo Bonzini * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 26c0907c9eSPaolo Bonzini * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 27c0907c9eSPaolo Bonzini * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 28c0907c9eSPaolo Bonzini * THE SOFTWARE. 29c0907c9eSPaolo Bonzini */ 30c0907c9eSPaolo Bonzini #include "hw/hw.h" 31c0907c9eSPaolo Bonzini #include "hw/pci-host/q35.h" 3239848901SIgor Mammedov #include "qapi/visitor.h" 33c0907c9eSPaolo Bonzini 34c0907c9eSPaolo Bonzini /**************************************************************************** 35c0907c9eSPaolo Bonzini * Q35 host 36c0907c9eSPaolo Bonzini */ 37c0907c9eSPaolo Bonzini 3862d92e43SHu Tao static void q35_host_realize(DeviceState *dev, Error **errp) 39c0907c9eSPaolo Bonzini { 40ce88812fSHu Tao PCIHostState *pci = PCI_HOST_BRIDGE(dev); 41ce88812fSHu Tao Q35PCIHost *s = Q35_HOST_DEVICE(dev); 4262d92e43SHu Tao SysBusDevice *sbd = SYS_BUS_DEVICE(dev); 43c0907c9eSPaolo Bonzini 4462d92e43SHu Tao sysbus_add_io(sbd, MCH_HOST_BRIDGE_CONFIG_ADDR, &pci->conf_mem); 4562d92e43SHu Tao sysbus_init_ioports(sbd, MCH_HOST_BRIDGE_CONFIG_ADDR, 4); 46c0907c9eSPaolo Bonzini 4762d92e43SHu Tao sysbus_add_io(sbd, MCH_HOST_BRIDGE_CONFIG_DATA, &pci->data_mem); 4862d92e43SHu Tao sysbus_init_ioports(sbd, MCH_HOST_BRIDGE_CONFIG_DATA, 4); 49c0907c9eSPaolo Bonzini 50ce88812fSHu Tao if (pcie_host_init(PCIE_HOST_BRIDGE(s)) < 0) { 5162d92e43SHu Tao error_setg(errp, "failed to initialize pcie host"); 5262d92e43SHu Tao return; 53c0907c9eSPaolo Bonzini } 54ce88812fSHu Tao pci->bus = pci_bus_new(DEVICE(s), "pcie.0", 55c0907c9eSPaolo Bonzini s->mch.pci_address_space, s->mch.address_space_io, 56c0907c9eSPaolo Bonzini 0, TYPE_PCIE_BUS); 57ce88812fSHu Tao qdev_set_parent_bus(DEVICE(&s->mch), BUS(pci->bus)); 58c0907c9eSPaolo Bonzini qdev_init_nofail(DEVICE(&s->mch)); 59c0907c9eSPaolo Bonzini } 60c0907c9eSPaolo Bonzini 61568f0690SDavid Gibson static const char *q35_host_root_bus_path(PCIHostState *host_bridge, 62568f0690SDavid Gibson PCIBus *rootbus) 63568f0690SDavid Gibson { 6404c7d8b8SCole Robinson Q35PCIHost *s = Q35_HOST_DEVICE(host_bridge); 6504c7d8b8SCole Robinson 66568f0690SDavid Gibson /* For backwards compat with old device paths */ 6704c7d8b8SCole Robinson if (s->mch.short_root_bus) { 68568f0690SDavid Gibson return "0000"; 69568f0690SDavid Gibson } 7004c7d8b8SCole Robinson return "0000:00"; 7104c7d8b8SCole Robinson } 72568f0690SDavid Gibson 7339848901SIgor Mammedov static void q35_host_get_pci_hole_start(Object *obj, Visitor *v, 7439848901SIgor Mammedov void *opaque, const char *name, 7539848901SIgor Mammedov Error **errp) 7639848901SIgor Mammedov { 7739848901SIgor Mammedov Q35PCIHost *s = Q35_HOST_DEVICE(obj); 7839848901SIgor Mammedov uint32_t value = s->mch.pci_info.w32.begin; 7939848901SIgor Mammedov 8039848901SIgor Mammedov visit_type_uint32(v, &value, name, errp); 8139848901SIgor Mammedov } 8239848901SIgor Mammedov 8339848901SIgor Mammedov static void q35_host_get_pci_hole_end(Object *obj, Visitor *v, 8439848901SIgor Mammedov void *opaque, const char *name, 8539848901SIgor Mammedov Error **errp) 8639848901SIgor Mammedov { 8739848901SIgor Mammedov Q35PCIHost *s = Q35_HOST_DEVICE(obj); 8839848901SIgor Mammedov uint32_t value = s->mch.pci_info.w32.end; 8939848901SIgor Mammedov 9039848901SIgor Mammedov visit_type_uint32(v, &value, name, errp); 9139848901SIgor Mammedov } 9239848901SIgor Mammedov 9339848901SIgor Mammedov static void q35_host_get_pci_hole64_start(Object *obj, Visitor *v, 9439848901SIgor Mammedov void *opaque, const char *name, 9539848901SIgor Mammedov Error **errp) 9639848901SIgor Mammedov { 978b42d730SMichael S. Tsirkin PCIHostState *h = PCI_HOST_BRIDGE(obj); 988b42d730SMichael S. Tsirkin Range w64; 9939848901SIgor Mammedov 1008b42d730SMichael S. Tsirkin pci_bus_get_w64_range(h->bus, &w64); 1018b42d730SMichael S. Tsirkin 1028b42d730SMichael S. Tsirkin visit_type_uint64(v, &w64.begin, name, errp); 10339848901SIgor Mammedov } 10439848901SIgor Mammedov 10539848901SIgor Mammedov static void q35_host_get_pci_hole64_end(Object *obj, Visitor *v, 10639848901SIgor Mammedov void *opaque, const char *name, 10739848901SIgor Mammedov Error **errp) 10839848901SIgor Mammedov { 1098b42d730SMichael S. Tsirkin PCIHostState *h = PCI_HOST_BRIDGE(obj); 1108b42d730SMichael S. Tsirkin Range w64; 11139848901SIgor Mammedov 1128b42d730SMichael S. Tsirkin pci_bus_get_w64_range(h->bus, &w64); 1138b42d730SMichael S. Tsirkin 1148b42d730SMichael S. Tsirkin visit_type_uint64(v, &w64.end, name, errp); 11539848901SIgor Mammedov } 11639848901SIgor Mammedov 117cbcaf79eSMichael S. Tsirkin static void q35_host_get_mmcfg_size(Object *obj, Visitor *v, 118cbcaf79eSMichael S. Tsirkin void *opaque, const char *name, 119cbcaf79eSMichael S. Tsirkin Error **errp) 120cbcaf79eSMichael S. Tsirkin { 121cbcaf79eSMichael S. Tsirkin PCIExpressHost *e = PCIE_HOST_BRIDGE(obj); 122cbcaf79eSMichael S. Tsirkin uint32_t value = e->size; 123cbcaf79eSMichael S. Tsirkin 124cbcaf79eSMichael S. Tsirkin visit_type_uint32(v, &value, name, errp); 125cbcaf79eSMichael S. Tsirkin } 126cbcaf79eSMichael S. Tsirkin 127c0907c9eSPaolo Bonzini static Property mch_props[] = { 12887f65245SMichael S. Tsirkin DEFINE_PROP_UINT64(PCIE_HOST_MCFG_BASE, Q35PCIHost, parent_obj.base_addr, 129c0907c9eSPaolo Bonzini MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT), 13039848901SIgor Mammedov DEFINE_PROP_SIZE(PCI_HOST_PROP_PCI_HOLE64_SIZE, Q35PCIHost, 13139848901SIgor Mammedov mch.pci_hole64_size, DEFAULT_PCI_HOLE64_SIZE), 13204c7d8b8SCole Robinson DEFINE_PROP_UINT32("short_root_bus", Q35PCIHost, mch.short_root_bus, 0), 133c0907c9eSPaolo Bonzini DEFINE_PROP_END_OF_LIST(), 134c0907c9eSPaolo Bonzini }; 135c0907c9eSPaolo Bonzini 136c0907c9eSPaolo Bonzini static void q35_host_class_init(ObjectClass *klass, void *data) 137c0907c9eSPaolo Bonzini { 138c0907c9eSPaolo Bonzini DeviceClass *dc = DEVICE_CLASS(klass); 139568f0690SDavid Gibson PCIHostBridgeClass *hc = PCI_HOST_BRIDGE_CLASS(klass); 140c0907c9eSPaolo Bonzini 141568f0690SDavid Gibson hc->root_bus_path = q35_host_root_bus_path; 14262d92e43SHu Tao dc->realize = q35_host_realize; 143c0907c9eSPaolo Bonzini dc->props = mch_props; 144125ee0edSMarcel Apfelbaum set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); 14568c0e134SMichael S. Tsirkin dc->fw_name = "pci"; 146c0907c9eSPaolo Bonzini } 147c0907c9eSPaolo Bonzini 148c0907c9eSPaolo Bonzini static void q35_host_initfn(Object *obj) 149c0907c9eSPaolo Bonzini { 150c0907c9eSPaolo Bonzini Q35PCIHost *s = Q35_HOST_DEVICE(obj); 15162d92e43SHu Tao PCIHostState *phb = PCI_HOST_BRIDGE(obj); 15262d92e43SHu Tao 15362d92e43SHu Tao memory_region_init_io(&phb->conf_mem, obj, &pci_host_conf_le_ops, phb, 15462d92e43SHu Tao "pci-conf-idx", 4); 15562d92e43SHu Tao memory_region_init_io(&phb->data_mem, obj, &pci_host_data_le_ops, phb, 15662d92e43SHu Tao "pci-conf-data", 4); 157c0907c9eSPaolo Bonzini 158213f0c4fSAndreas Färber object_initialize(&s->mch, sizeof(s->mch), TYPE_MCH_PCI_DEVICE); 159c0907c9eSPaolo Bonzini object_property_add_child(OBJECT(s), "mch", OBJECT(&s->mch), NULL); 160c0907c9eSPaolo Bonzini qdev_prop_set_uint32(DEVICE(&s->mch), "addr", PCI_DEVFN(0, 0)); 161c0907c9eSPaolo Bonzini qdev_prop_set_bit(DEVICE(&s->mch), "multifunction", false); 16239848901SIgor Mammedov 16339848901SIgor Mammedov object_property_add(obj, PCI_HOST_PROP_PCI_HOLE_START, "int", 16439848901SIgor Mammedov q35_host_get_pci_hole_start, 16539848901SIgor Mammedov NULL, NULL, NULL, NULL); 16639848901SIgor Mammedov 16739848901SIgor Mammedov object_property_add(obj, PCI_HOST_PROP_PCI_HOLE_END, "int", 16839848901SIgor Mammedov q35_host_get_pci_hole_end, 16939848901SIgor Mammedov NULL, NULL, NULL, NULL); 17039848901SIgor Mammedov 17139848901SIgor Mammedov object_property_add(obj, PCI_HOST_PROP_PCI_HOLE64_START, "int", 17239848901SIgor Mammedov q35_host_get_pci_hole64_start, 17339848901SIgor Mammedov NULL, NULL, NULL, NULL); 17439848901SIgor Mammedov 17539848901SIgor Mammedov object_property_add(obj, PCI_HOST_PROP_PCI_HOLE64_END, "int", 17639848901SIgor Mammedov q35_host_get_pci_hole64_end, 17739848901SIgor Mammedov NULL, NULL, NULL, NULL); 17839848901SIgor Mammedov 179cbcaf79eSMichael S. Tsirkin object_property_add(obj, PCIE_HOST_MCFG_SIZE, "int", 180cbcaf79eSMichael S. Tsirkin q35_host_get_mmcfg_size, 181cbcaf79eSMichael S. Tsirkin NULL, NULL, NULL, NULL); 182cbcaf79eSMichael S. Tsirkin 18339848901SIgor Mammedov /* Leave enough space for the biggest MCFG BAR */ 18439848901SIgor Mammedov /* TODO: this matches current bios behaviour, but 18539848901SIgor Mammedov * it's not a power of two, which means an MTRR 18639848901SIgor Mammedov * can't cover it exactly. 18739848901SIgor Mammedov */ 18839848901SIgor Mammedov s->mch.pci_info.w32.begin = MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT + 18939848901SIgor Mammedov MCH_HOST_BRIDGE_PCIEXBAR_MAX; 19039848901SIgor Mammedov s->mch.pci_info.w32.end = IO_APIC_DEFAULT_ADDRESS; 191c0907c9eSPaolo Bonzini } 192c0907c9eSPaolo Bonzini 193c0907c9eSPaolo Bonzini static const TypeInfo q35_host_info = { 194c0907c9eSPaolo Bonzini .name = TYPE_Q35_HOST_DEVICE, 195c0907c9eSPaolo Bonzini .parent = TYPE_PCIE_HOST_BRIDGE, 196c0907c9eSPaolo Bonzini .instance_size = sizeof(Q35PCIHost), 197c0907c9eSPaolo Bonzini .instance_init = q35_host_initfn, 198c0907c9eSPaolo Bonzini .class_init = q35_host_class_init, 199c0907c9eSPaolo Bonzini }; 200c0907c9eSPaolo Bonzini 201c0907c9eSPaolo Bonzini /**************************************************************************** 202c0907c9eSPaolo Bonzini * MCH D0:F0 203c0907c9eSPaolo Bonzini */ 204c0907c9eSPaolo Bonzini 205c0907c9eSPaolo Bonzini /* PCIe MMCFG */ 206c0907c9eSPaolo Bonzini static void mch_update_pciexbar(MCHPCIState *mch) 207c0907c9eSPaolo Bonzini { 208ce88812fSHu Tao PCIDevice *pci_dev = PCI_DEVICE(mch); 209ce88812fSHu Tao BusState *bus = qdev_get_parent_bus(DEVICE(mch)); 210ce88812fSHu Tao PCIExpressHost *pehb = PCIE_HOST_BRIDGE(bus->parent); 211c0907c9eSPaolo Bonzini 212c0907c9eSPaolo Bonzini uint64_t pciexbar; 213c0907c9eSPaolo Bonzini int enable; 214c0907c9eSPaolo Bonzini uint64_t addr; 215c0907c9eSPaolo Bonzini uint64_t addr_mask; 216c0907c9eSPaolo Bonzini uint32_t length; 217c0907c9eSPaolo Bonzini 218c0907c9eSPaolo Bonzini pciexbar = pci_get_quad(pci_dev->config + MCH_HOST_BRIDGE_PCIEXBAR); 219c0907c9eSPaolo Bonzini enable = pciexbar & MCH_HOST_BRIDGE_PCIEXBAREN; 220c0907c9eSPaolo Bonzini addr_mask = MCH_HOST_BRIDGE_PCIEXBAR_ADMSK; 221c0907c9eSPaolo Bonzini switch (pciexbar & MCH_HOST_BRIDGE_PCIEXBAR_LENGTH_MASK) { 222c0907c9eSPaolo Bonzini case MCH_HOST_BRIDGE_PCIEXBAR_LENGTH_256M: 223c0907c9eSPaolo Bonzini length = 256 * 1024 * 1024; 224c0907c9eSPaolo Bonzini break; 225c0907c9eSPaolo Bonzini case MCH_HOST_BRIDGE_PCIEXBAR_LENGTH_128M: 226c0907c9eSPaolo Bonzini length = 128 * 1024 * 1024; 227c0907c9eSPaolo Bonzini addr_mask |= MCH_HOST_BRIDGE_PCIEXBAR_128ADMSK | 228c0907c9eSPaolo Bonzini MCH_HOST_BRIDGE_PCIEXBAR_64ADMSK; 229c0907c9eSPaolo Bonzini break; 230c0907c9eSPaolo Bonzini case MCH_HOST_BRIDGE_PCIEXBAR_LENGTH_64M: 231c0907c9eSPaolo Bonzini length = 64 * 1024 * 1024; 232c0907c9eSPaolo Bonzini addr_mask |= MCH_HOST_BRIDGE_PCIEXBAR_64ADMSK; 233c0907c9eSPaolo Bonzini break; 234c0907c9eSPaolo Bonzini case MCH_HOST_BRIDGE_PCIEXBAR_LENGTH_RVD: 235c0907c9eSPaolo Bonzini default: 236c0907c9eSPaolo Bonzini enable = 0; 237c0907c9eSPaolo Bonzini length = 0; 238c0907c9eSPaolo Bonzini abort(); 239c0907c9eSPaolo Bonzini break; 240c0907c9eSPaolo Bonzini } 241c0907c9eSPaolo Bonzini addr = pciexbar & addr_mask; 242ce88812fSHu Tao pcie_host_mmcfg_update(pehb, enable, addr, length); 243636228a8SMichael S. Tsirkin /* Leave enough space for the MCFG BAR */ 244636228a8SMichael S. Tsirkin /* 245636228a8SMichael S. Tsirkin * TODO: this matches current bios behaviour, but it's not a power of two, 246636228a8SMichael S. Tsirkin * which means an MTRR can't cover it exactly. 247636228a8SMichael S. Tsirkin */ 248636228a8SMichael S. Tsirkin if (enable) { 249636228a8SMichael S. Tsirkin mch->pci_info.w32.begin = addr + length; 250636228a8SMichael S. Tsirkin } else { 251636228a8SMichael S. Tsirkin mch->pci_info.w32.begin = MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT; 252636228a8SMichael S. Tsirkin } 253c0907c9eSPaolo Bonzini } 254c0907c9eSPaolo Bonzini 255c0907c9eSPaolo Bonzini /* PAM */ 256c0907c9eSPaolo Bonzini static void mch_update_pam(MCHPCIState *mch) 257c0907c9eSPaolo Bonzini { 258ce88812fSHu Tao PCIDevice *pd = PCI_DEVICE(mch); 259c0907c9eSPaolo Bonzini int i; 260c0907c9eSPaolo Bonzini 261c0907c9eSPaolo Bonzini memory_region_transaction_begin(); 262c0907c9eSPaolo Bonzini for (i = 0; i < 13; i++) { 263c0907c9eSPaolo Bonzini pam_update(&mch->pam_regions[i], i, 264ce88812fSHu Tao pd->config[MCH_HOST_BRIDGE_PAM0 + ((i + 1) / 2)]); 265c0907c9eSPaolo Bonzini } 266c0907c9eSPaolo Bonzini memory_region_transaction_commit(); 267c0907c9eSPaolo Bonzini } 268c0907c9eSPaolo Bonzini 269c0907c9eSPaolo Bonzini /* SMRAM */ 270c0907c9eSPaolo Bonzini static void mch_update_smram(MCHPCIState *mch) 271c0907c9eSPaolo Bonzini { 272ce88812fSHu Tao PCIDevice *pd = PCI_DEVICE(mch); 273ce88812fSHu Tao 274c0907c9eSPaolo Bonzini memory_region_transaction_begin(); 275ce88812fSHu Tao smram_update(&mch->smram_region, pd->config[MCH_HOST_BRDIGE_SMRAM], 276c0907c9eSPaolo Bonzini mch->smm_enabled); 277c0907c9eSPaolo Bonzini memory_region_transaction_commit(); 278c0907c9eSPaolo Bonzini } 279c0907c9eSPaolo Bonzini 280c0907c9eSPaolo Bonzini static void mch_set_smm(int smm, void *arg) 281c0907c9eSPaolo Bonzini { 282c0907c9eSPaolo Bonzini MCHPCIState *mch = arg; 283ce88812fSHu Tao PCIDevice *pd = PCI_DEVICE(mch); 284c0907c9eSPaolo Bonzini 285c0907c9eSPaolo Bonzini memory_region_transaction_begin(); 286ce88812fSHu Tao smram_set_smm(&mch->smm_enabled, smm, pd->config[MCH_HOST_BRDIGE_SMRAM], 287c0907c9eSPaolo Bonzini &mch->smram_region); 288c0907c9eSPaolo Bonzini memory_region_transaction_commit(); 289c0907c9eSPaolo Bonzini } 290c0907c9eSPaolo Bonzini 291c0907c9eSPaolo Bonzini static void mch_write_config(PCIDevice *d, 292c0907c9eSPaolo Bonzini uint32_t address, uint32_t val, int len) 293c0907c9eSPaolo Bonzini { 294c0907c9eSPaolo Bonzini MCHPCIState *mch = MCH_PCI_DEVICE(d); 295c0907c9eSPaolo Bonzini 296c0907c9eSPaolo Bonzini /* XXX: implement SMRAM.D_LOCK */ 297c0907c9eSPaolo Bonzini pci_default_write_config(d, address, val, len); 298c0907c9eSPaolo Bonzini 299c0907c9eSPaolo Bonzini if (ranges_overlap(address, len, MCH_HOST_BRIDGE_PAM0, 300c0907c9eSPaolo Bonzini MCH_HOST_BRIDGE_PAM_SIZE)) { 301c0907c9eSPaolo Bonzini mch_update_pam(mch); 302c0907c9eSPaolo Bonzini } 303c0907c9eSPaolo Bonzini 304c0907c9eSPaolo Bonzini if (ranges_overlap(address, len, MCH_HOST_BRIDGE_PCIEXBAR, 305c0907c9eSPaolo Bonzini MCH_HOST_BRIDGE_PCIEXBAR_SIZE)) { 306c0907c9eSPaolo Bonzini mch_update_pciexbar(mch); 307c0907c9eSPaolo Bonzini } 308c0907c9eSPaolo Bonzini 309c0907c9eSPaolo Bonzini if (ranges_overlap(address, len, MCH_HOST_BRDIGE_SMRAM, 310c0907c9eSPaolo Bonzini MCH_HOST_BRDIGE_SMRAM_SIZE)) { 311c0907c9eSPaolo Bonzini mch_update_smram(mch); 312c0907c9eSPaolo Bonzini } 313c0907c9eSPaolo Bonzini } 314c0907c9eSPaolo Bonzini 315c0907c9eSPaolo Bonzini static void mch_update(MCHPCIState *mch) 316c0907c9eSPaolo Bonzini { 317c0907c9eSPaolo Bonzini mch_update_pciexbar(mch); 318c0907c9eSPaolo Bonzini mch_update_pam(mch); 319c0907c9eSPaolo Bonzini mch_update_smram(mch); 320c0907c9eSPaolo Bonzini } 321c0907c9eSPaolo Bonzini 322c0907c9eSPaolo Bonzini static int mch_post_load(void *opaque, int version_id) 323c0907c9eSPaolo Bonzini { 324c0907c9eSPaolo Bonzini MCHPCIState *mch = opaque; 325c0907c9eSPaolo Bonzini mch_update(mch); 326c0907c9eSPaolo Bonzini return 0; 327c0907c9eSPaolo Bonzini } 328c0907c9eSPaolo Bonzini 329c0907c9eSPaolo Bonzini static const VMStateDescription vmstate_mch = { 330c0907c9eSPaolo Bonzini .name = "mch", 331c0907c9eSPaolo Bonzini .version_id = 1, 332c0907c9eSPaolo Bonzini .minimum_version_id = 1, 333c0907c9eSPaolo Bonzini .minimum_version_id_old = 1, 334c0907c9eSPaolo Bonzini .post_load = mch_post_load, 335c0907c9eSPaolo Bonzini .fields = (VMStateField []) { 336ce88812fSHu Tao VMSTATE_PCI_DEVICE(parent_obj, MCHPCIState), 337c0907c9eSPaolo Bonzini VMSTATE_UINT8(smm_enabled, MCHPCIState), 338c0907c9eSPaolo Bonzini VMSTATE_END_OF_LIST() 339c0907c9eSPaolo Bonzini } 340c0907c9eSPaolo Bonzini }; 341c0907c9eSPaolo Bonzini 342c0907c9eSPaolo Bonzini static void mch_reset(DeviceState *qdev) 343c0907c9eSPaolo Bonzini { 344c0907c9eSPaolo Bonzini PCIDevice *d = PCI_DEVICE(qdev); 345c0907c9eSPaolo Bonzini MCHPCIState *mch = MCH_PCI_DEVICE(d); 346c0907c9eSPaolo Bonzini 347c0907c9eSPaolo Bonzini pci_set_quad(d->config + MCH_HOST_BRIDGE_PCIEXBAR, 348c0907c9eSPaolo Bonzini MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT); 349c0907c9eSPaolo Bonzini 350c0907c9eSPaolo Bonzini d->config[MCH_HOST_BRDIGE_SMRAM] = MCH_HOST_BRIDGE_SMRAM_DEFAULT; 351c0907c9eSPaolo Bonzini 352c0907c9eSPaolo Bonzini mch_update(mch); 353c0907c9eSPaolo Bonzini } 354c0907c9eSPaolo Bonzini 355c0907c9eSPaolo Bonzini static int mch_init(PCIDevice *d) 356c0907c9eSPaolo Bonzini { 357c0907c9eSPaolo Bonzini int i; 358c0907c9eSPaolo Bonzini MCHPCIState *mch = MCH_PCI_DEVICE(d); 359c0907c9eSPaolo Bonzini 36083d08f26SMichael S. Tsirkin /* setup pci memory mapping */ 36183d08f26SMichael S. Tsirkin pc_pci_as_mapping_init(OBJECT(mch), mch->system_memory, 36283d08f26SMichael S. Tsirkin mch->pci_address_space); 36339848901SIgor Mammedov 364c0907c9eSPaolo Bonzini /* smram */ 365c0907c9eSPaolo Bonzini cpu_smm_register(&mch_set_smm, mch); 36640c5dce9SPaolo Bonzini memory_region_init_alias(&mch->smram_region, OBJECT(mch), "smram-region", 367c0907c9eSPaolo Bonzini mch->pci_address_space, 0xa0000, 0x20000); 368c0907c9eSPaolo Bonzini memory_region_add_subregion_overlap(mch->system_memory, 0xa0000, 369c0907c9eSPaolo Bonzini &mch->smram_region, 1); 370c0907c9eSPaolo Bonzini memory_region_set_enabled(&mch->smram_region, false); 3713cd2cf43SPaolo Bonzini init_pam(DEVICE(mch), mch->ram_memory, mch->system_memory, mch->pci_address_space, 372c0907c9eSPaolo Bonzini &mch->pam_regions[0], PAM_BIOS_BASE, PAM_BIOS_SIZE); 373c0907c9eSPaolo Bonzini for (i = 0; i < 12; ++i) { 3743cd2cf43SPaolo Bonzini init_pam(DEVICE(mch), mch->ram_memory, mch->system_memory, mch->pci_address_space, 375c0907c9eSPaolo Bonzini &mch->pam_regions[i+1], PAM_EXPAN_BASE + i * PAM_EXPAN_SIZE, 376c0907c9eSPaolo Bonzini PAM_EXPAN_SIZE); 377c0907c9eSPaolo Bonzini } 378c0907c9eSPaolo Bonzini return 0; 379c0907c9eSPaolo Bonzini } 380c0907c9eSPaolo Bonzini 3816f1426abSMichael S. Tsirkin uint64_t mch_mcfg_base(void) 3826f1426abSMichael S. Tsirkin { 3836f1426abSMichael S. Tsirkin bool ambiguous; 3846f1426abSMichael S. Tsirkin Object *o = object_resolve_path_type("", TYPE_MCH_PCI_DEVICE, &ambiguous); 3856f1426abSMichael S. Tsirkin if (!o) { 3866f1426abSMichael S. Tsirkin return 0; 3876f1426abSMichael S. Tsirkin } 3886f1426abSMichael S. Tsirkin return MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT; 3896f1426abSMichael S. Tsirkin } 3906f1426abSMichael S. Tsirkin 391c0907c9eSPaolo Bonzini static void mch_class_init(ObjectClass *klass, void *data) 392c0907c9eSPaolo Bonzini { 393c0907c9eSPaolo Bonzini PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 394c0907c9eSPaolo Bonzini DeviceClass *dc = DEVICE_CLASS(klass); 395c0907c9eSPaolo Bonzini 396c0907c9eSPaolo Bonzini k->init = mch_init; 397c0907c9eSPaolo Bonzini k->config_write = mch_write_config; 398c0907c9eSPaolo Bonzini dc->reset = mch_reset; 399125ee0edSMarcel Apfelbaum set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); 400c0907c9eSPaolo Bonzini dc->desc = "Host bridge"; 401c0907c9eSPaolo Bonzini dc->vmsd = &vmstate_mch; 402c0907c9eSPaolo Bonzini k->vendor_id = PCI_VENDOR_ID_INTEL; 403c0907c9eSPaolo Bonzini k->device_id = PCI_DEVICE_ID_INTEL_Q35_MCH; 404451f7846SRichard W.M. Jones k->revision = MCH_HOST_BRIDGE_REVISION_DEFAULT; 405c0907c9eSPaolo Bonzini k->class_id = PCI_CLASS_BRIDGE_HOST; 406*08c58f92SMarkus Armbruster /* 407*08c58f92SMarkus Armbruster * PCI-facing part of the host bridge, not usable without the 408*08c58f92SMarkus Armbruster * host-facing part, which can't be device_add'ed, yet. 409*08c58f92SMarkus Armbruster */ 410*08c58f92SMarkus Armbruster dc->cannot_instantiate_with_device_add_yet = true; 411c0907c9eSPaolo Bonzini } 412c0907c9eSPaolo Bonzini 413c0907c9eSPaolo Bonzini static const TypeInfo mch_info = { 414c0907c9eSPaolo Bonzini .name = TYPE_MCH_PCI_DEVICE, 415c0907c9eSPaolo Bonzini .parent = TYPE_PCI_DEVICE, 416c0907c9eSPaolo Bonzini .instance_size = sizeof(MCHPCIState), 417c0907c9eSPaolo Bonzini .class_init = mch_class_init, 418c0907c9eSPaolo Bonzini }; 419c0907c9eSPaolo Bonzini 420c0907c9eSPaolo Bonzini static void q35_register(void) 421c0907c9eSPaolo Bonzini { 422c0907c9eSPaolo Bonzini type_register_static(&mch_info); 423c0907c9eSPaolo Bonzini type_register_static(&q35_host_info); 424c0907c9eSPaolo Bonzini } 425c0907c9eSPaolo Bonzini 426c0907c9eSPaolo Bonzini type_init(q35_register); 427