root / hw / ioh3420.c @ 03f48b07
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/*
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* ioh3420.c
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* Intel X58 north bridge IOH
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* PCI Express root port device id 3420
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*
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* Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp>
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* VA Linux Systems Japan K.K.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "pci_ids.h" |
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#include "msi.h" |
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#include "pcie.h" |
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#include "ioh3420.h" |
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#define PCI_DEVICE_ID_IOH_EPORT 0x3420 /* D0:F0 express mode */ |
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#define PCI_DEVICE_ID_IOH_REV 0x2 |
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#define IOH_EP_SSVID_OFFSET 0x40 |
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#define IOH_EP_SSVID_SVID PCI_VENDOR_ID_INTEL
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#define IOH_EP_SSVID_SSID 0 |
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#define IOH_EP_MSI_OFFSET 0x60 |
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#define IOH_EP_MSI_SUPPORTED_FLAGS PCI_MSI_FLAGS_MASKBIT
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#define IOH_EP_MSI_NR_VECTOR 2 |
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#define IOH_EP_EXP_OFFSET 0x90 |
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#define IOH_EP_AER_OFFSET 0x100 |
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/*
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* If two MSI vector are allocated, Advanced Error Interrupt Message Number
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* is 1. otherwise 0.
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* 17.12.5.10 RPERRSTS, 32:27 bit Advanced Error Interrupt Message Number.
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*/
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static uint8_t ioh3420_aer_vector(const PCIDevice *d) |
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{ |
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switch (msi_nr_vectors_allocated(d)) {
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case 1: |
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return 0; |
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case 2: |
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return 1; |
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case 4: |
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case 8: |
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case 16: |
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case 32: |
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default:
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break;
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} |
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abort(); |
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return 0; |
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} |
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static void ioh3420_aer_vector_update(PCIDevice *d) |
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{ |
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pcie_aer_root_set_vector(d, ioh3420_aer_vector(d)); |
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} |
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static void ioh3420_write_config(PCIDevice *d, |
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uint32_t address, uint32_t val, int len)
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{ |
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uint32_t root_cmd = |
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pci_get_long(d->config + d->exp.aer_cap + PCI_ERR_ROOT_COMMAND); |
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pci_bridge_write_config(d, address, val, len); |
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msi_write_config(d, address, val, len); |
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ioh3420_aer_vector_update(d); |
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pcie_cap_slot_write_config(d, address, val, len); |
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pcie_aer_write_config(d, address, val, len); |
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pcie_aer_root_write_config(d, address, val, len, root_cmd); |
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} |
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static void ioh3420_reset(DeviceState *qdev) |
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{ |
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PCIDevice *d = PCI_DEVICE(qdev); |
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msi_reset(d); |
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ioh3420_aer_vector_update(d); |
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pcie_cap_root_reset(d); |
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pcie_cap_deverr_reset(d); |
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pcie_cap_slot_reset(d); |
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pcie_aer_root_reset(d); |
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pci_bridge_reset(qdev); |
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pci_bridge_disable_base_limit(d); |
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} |
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static int ioh3420_initfn(PCIDevice *d) |
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{ |
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PCIBridge* br = DO_UPCAST(PCIBridge, dev, d); |
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PCIEPort *p = DO_UPCAST(PCIEPort, br, br); |
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PCIESlot *s = DO_UPCAST(PCIESlot, port, p); |
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int rc;
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int tmp;
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rc = pci_bridge_initfn(d); |
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if (rc < 0) { |
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return rc;
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} |
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pcie_port_init_reg(d); |
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rc = pci_bridge_ssvid_init(d, IOH_EP_SSVID_OFFSET, |
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IOH_EP_SSVID_SVID, IOH_EP_SSVID_SSID); |
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if (rc < 0) { |
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goto err_bridge;
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} |
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rc = msi_init(d, IOH_EP_MSI_OFFSET, IOH_EP_MSI_NR_VECTOR, |
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IOH_EP_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_64BIT, |
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IOH_EP_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_MASKBIT); |
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if (rc < 0) { |
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goto err_bridge;
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} |
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rc = pcie_cap_init(d, IOH_EP_EXP_OFFSET, PCI_EXP_TYPE_ROOT_PORT, p->port); |
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if (rc < 0) { |
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goto err_msi;
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} |
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pcie_cap_deverr_init(d); |
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pcie_cap_slot_init(d, s->slot); |
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pcie_chassis_create(s->chassis); |
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rc = pcie_chassis_add_slot(s); |
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if (rc < 0) { |
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goto err_pcie_cap;
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return rc;
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} |
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pcie_cap_root_init(d); |
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rc = pcie_aer_init(d, IOH_EP_AER_OFFSET); |
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if (rc < 0) { |
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goto err;
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} |
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pcie_aer_root_init(d); |
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ioh3420_aer_vector_update(d); |
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return 0; |
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err:
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pcie_chassis_del_slot(s); |
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err_pcie_cap:
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pcie_cap_exit(d); |
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err_msi:
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msi_uninit(d); |
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err_bridge:
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tmp = pci_bridge_exitfn(d); |
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assert(!tmp); |
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return rc;
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} |
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static int ioh3420_exitfn(PCIDevice *d) |
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{ |
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PCIBridge* br = DO_UPCAST(PCIBridge, dev, d); |
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PCIEPort *p = DO_UPCAST(PCIEPort, br, br); |
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PCIESlot *s = DO_UPCAST(PCIESlot, port, p); |
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pcie_aer_exit(d); |
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pcie_chassis_del_slot(s); |
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pcie_cap_exit(d); |
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msi_uninit(d); |
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return pci_bridge_exitfn(d);
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} |
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PCIESlot *ioh3420_init(PCIBus *bus, int devfn, bool multifunction, |
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const char *bus_name, pci_map_irq_fn map_irq, |
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uint8_t port, uint8_t chassis, uint16_t slot) |
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{ |
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PCIDevice *d; |
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PCIBridge *br; |
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DeviceState *qdev; |
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d = pci_create_multifunction(bus, devfn, multifunction, "ioh3420");
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if (!d) {
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return NULL; |
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} |
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br = DO_UPCAST(PCIBridge, dev, d); |
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qdev = &br->dev.qdev; |
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pci_bridge_map_irq(br, bus_name, map_irq); |
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qdev_prop_set_uint8(qdev, "port", port);
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qdev_prop_set_uint8(qdev, "chassis", chassis);
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qdev_prop_set_uint16(qdev, "slot", slot);
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qdev_init_nofail(qdev); |
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return DO_UPCAST(PCIESlot, port, DO_UPCAST(PCIEPort, br, br));
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} |
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static const VMStateDescription vmstate_ioh3420 = { |
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.name = "ioh-3240-express-root-port",
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.version_id = 1,
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.minimum_version_id = 1,
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.minimum_version_id_old = 1,
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.post_load = pcie_cap_slot_post_load, |
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.fields = (VMStateField[]) { |
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VMSTATE_PCIE_DEVICE(port.br.dev, PCIESlot), |
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VMSTATE_STRUCT(port.br.dev.exp.aer_log, PCIESlot, 0,
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vmstate_pcie_aer_log, PCIEAERLog), |
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VMSTATE_END_OF_LIST() |
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} |
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}; |
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static Property ioh3420_properties[] = {
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DEFINE_PROP_UINT8("port", PCIESlot, port.port, 0), |
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DEFINE_PROP_UINT8("chassis", PCIESlot, chassis, 0), |
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DEFINE_PROP_UINT16("slot", PCIESlot, slot, 0), |
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DEFINE_PROP_UINT16("aer_log_max", PCIESlot,
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port.br.dev.exp.aer_log.log_max, |
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PCIE_AER_LOG_MAX_DEFAULT), |
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DEFINE_PROP_END_OF_LIST(), |
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}; |
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static void ioh3420_class_init(ObjectClass *klass, void *data) |
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{ |
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DeviceClass *dc = DEVICE_CLASS(klass); |
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PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
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k->is_express = 1;
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k->is_bridge = 1;
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k->config_write = ioh3420_write_config; |
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k->init = ioh3420_initfn; |
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k->exit = ioh3420_exitfn; |
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k->vendor_id = PCI_VENDOR_ID_INTEL; |
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k->device_id = PCI_DEVICE_ID_IOH_EPORT; |
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k->revision = PCI_DEVICE_ID_IOH_REV; |
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dc->desc = "Intel IOH device id 3420 PCIE Root Port";
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dc->reset = ioh3420_reset; |
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dc->vmsd = &vmstate_ioh3420; |
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dc->props = ioh3420_properties; |
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} |
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static TypeInfo ioh3420_info = {
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.name = "ioh3420",
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.parent = TYPE_PCI_DEVICE, |
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.instance_size = sizeof(PCIESlot),
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.class_init = ioh3420_class_init, |
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}; |
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static void ioh3420_register_types(void) |
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{ |
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type_register_static(&ioh3420_info); |
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} |
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type_init(ioh3420_register_types) |
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/*
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* Local variables:
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* c-indent-level: 4
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tab-mode: nil
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* End:
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*/
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