1 files changed, 310 insertions, 0 deletions
diff --git a/hw/pci-host/q35.c b/hw/pci-host/q35.c
new file mode 100644
index 0000000000..8467f86450
--- /dev/null
+++ b/hw/pci-host/q35.c
@@ -0,0 +1,310 @@
+/*
+ * 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/pci-host/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);