| /* |
| * 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 const VMStateDescription vmstate_ioh3420 = { |
| .name = "ioh-3240-express-root-port", |
| .version_id = 1, |
| .minimum_version_id = 1, |
| .minimum_version_id_old = 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; |
| } |
| |
| 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: |
| */ |