/* * ioh3420.c * Intel X58 north bridge IOH * PCI Express root port device id 3420 * * Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp> * VA Linux Systems Japan K.K. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, see <http://www.gnu.org/licenses/>. */ #include "hw/pci/pci_ids.h" #include "hw/pci/msi.h" #include "hw/pci/pcie.h" #include "ioh3420.h" #define PCI_DEVICE_ID_IOH_EPORT 0x3420 /* D0:F0 express mode */ #define PCI_DEVICE_ID_IOH_REV 0x2 #define IOH_EP_SSVID_OFFSET 0x40 #define IOH_EP_SSVID_SVID PCI_VENDOR_ID_INTEL #define IOH_EP_SSVID_SSID 0 #define IOH_EP_MSI_OFFSET 0x60 #define IOH_EP_MSI_SUPPORTED_FLAGS PCI_MSI_FLAGS_MASKBIT #define IOH_EP_MSI_NR_VECTOR 2 #define IOH_EP_EXP_OFFSET 0x90 #define IOH_EP_AER_OFFSET 0x100 /* * If two MSI vector are allocated, Advanced Error Interrupt Message Number * is 1. otherwise 0. * 17.12.5.10 RPERRSTS, 32:27 bit Advanced Error Interrupt Message Number. */ static uint8_t ioh3420_aer_vector(const PCIDevice *d) { switch (msi_nr_vectors_allocated(d)) { case 1: return 0; case 2: return 1; case 4: case 8: case 16: case 32: default: break; } abort(); return 0; } static void ioh3420_aer_vector_update(PCIDevice *d) { pcie_aer_root_set_vector(d, ioh3420_aer_vector(d)); } static void ioh3420_write_config(PCIDevice *d, uint32_t address, uint32_t val, int len) { uint32_t root_cmd = pci_get_long(d->config + d->exp.aer_cap + PCI_ERR_ROOT_COMMAND); pci_bridge_write_config(d, address, val, len); ioh3420_aer_vector_update(d); pcie_cap_slot_write_config(d, address, val, len); pcie_aer_write_config(d, address, val, len); pcie_aer_root_write_config(d, address, val, len, root_cmd); } static void ioh3420_reset(DeviceState *qdev) { PCIDevice *d = PCI_DEVICE(qdev); ioh3420_aer_vector_update(d); pcie_cap_root_reset(d); pcie_cap_deverr_reset(d); pcie_cap_slot_reset(d); pcie_aer_root_reset(d); pci_bridge_reset(qdev); pci_bridge_disable_base_limit(d); } static int ioh3420_initfn(PCIDevice *d) { PCIEPort *p = PCIE_PORT(d); PCIESlot *s = PCIE_SLOT(d); int rc; rc = pci_bridge_initfn(d, TYPE_PCIE_BUS); if (rc < 0) { return rc; } pcie_port_init_reg(d); rc = pci_bridge_ssvid_init(d, IOH_EP_SSVID_OFFSET, IOH_EP_SSVID_SVID, IOH_EP_SSVID_SSID); if (rc < 0) { goto err_bridge; } rc = msi_init(d, IOH_EP_MSI_OFFSET, IOH_EP_MSI_NR_VECTOR, IOH_EP_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_64BIT, IOH_EP_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_MASKBIT); if (rc < 0) { goto err_bridge; } rc = pcie_cap_init(d, IOH_EP_EXP_OFFSET, PCI_EXP_TYPE_ROOT_PORT, p->port); if (rc < 0) { goto err_msi; } pcie_cap_deverr_init(d); pcie_cap_slot_init(d, s->slot); pcie_chassis_create(s->chassis); rc = pcie_chassis_add_slot(s); if (rc < 0) { goto err_pcie_cap; } pcie_cap_root_init(d); rc = pcie_aer_init(d, IOH_EP_AER_OFFSET); if (rc < 0) { goto err; } pcie_aer_root_init(d); ioh3420_aer_vector_update(d); return 0; err: pcie_chassis_del_slot(s); err_pcie_cap: pcie_cap_exit(d); err_msi: msi_uninit(d); err_bridge: pci_bridge_exitfn(d); return rc; } static void ioh3420_exitfn(PCIDevice *d) { PCIESlot *s = PCIE_SLOT(d); pcie_aer_exit(d); pcie_chassis_del_slot(s); pcie_cap_exit(d); msi_uninit(d); pci_bridge_exitfn(d); } PCIESlot *ioh3420_init(PCIBus *bus, int devfn, bool multifunction, const char *bus_name, pci_map_irq_fn map_irq, uint8_t port, uint8_t chassis, uint16_t slot) { PCIDevice *d; PCIBridge *br; DeviceState *qdev; d = pci_create_multifunction(bus, devfn, multifunction, "ioh3420"); if (!d) { return NULL; } br = PCI_BRIDGE(d); qdev = DEVICE(d); pci_bridge_map_irq(br, bus_name, map_irq); qdev_prop_set_uint8(qdev, "port", port); qdev_prop_set_uint8(qdev, "chassis", chassis); qdev_prop_set_uint16(qdev, "slot", slot); qdev_init_nofail(qdev); return PCIE_SLOT(d); } static Property ioh3420_props[] = { DEFINE_PROP_BIT(COMPAT_PROP_PCP, PCIDevice, cap_present, QEMU_PCIE_SLTCAP_PCP_BITNR, true), DEFINE_PROP_END_OF_LIST() }; static const VMStateDescription vmstate_ioh3420 = { .name = "ioh-3240-express-root-port", .version_id = 1, .minimum_version_id = 1, .post_load = pcie_cap_slot_post_load, .fields = (VMStateField[]) { VMSTATE_PCIE_DEVICE(parent_obj.parent_obj.parent_obj, PCIESlot), VMSTATE_STRUCT(parent_obj.parent_obj.parent_obj.exp.aer_log, PCIESlot, 0, vmstate_pcie_aer_log, PCIEAERLog), VMSTATE_END_OF_LIST() } }; static void ioh3420_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); k->is_express = 1; k->is_bridge = 1; k->config_write = ioh3420_write_config; k->init = ioh3420_initfn; k->exit = ioh3420_exitfn; k->vendor_id = PCI_VENDOR_ID_INTEL; k->device_id = PCI_DEVICE_ID_IOH_EPORT; k->revision = PCI_DEVICE_ID_IOH_REV; set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); dc->desc = "Intel IOH device id 3420 PCIE Root Port"; dc->reset = ioh3420_reset; dc->vmsd = &vmstate_ioh3420; dc->props = ioh3420_props; } static const TypeInfo ioh3420_info = { .name = "ioh3420", .parent = TYPE_PCIE_SLOT, .class_init = ioh3420_class_init, }; static void ioh3420_register_types(void) { type_register_static(&ioh3420_info); } type_init(ioh3420_register_types) /* * Local variables: * c-indent-level: 4 * c-basic-offset: 4 * tab-width: 8 * indent-tab-mode: nil * End: */