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/*
* 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 "qemu/osdep.h"
#include "hw/pci/pci_ids.h"
#include "hw/pci/msi.h"
#include "hw/pci/pcie.h"
#include "ioh3420.h"
#include "qapi/error.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_cap_arifwd_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;
Error *err = NULL;
pci_config_set_interrupt_pin(d->config, 1);
pci_bridge_initfn(d, TYPE_PCIE_BUS);
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, &err);
if (rc < 0) {
assert(rc == -ENOTSUP);
error_report_err(err);
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_arifwd_init(d);
pcie_cap_deverr_init(d);
pcie_cap_slot_init(d, s->slot);
pcie_cap_root_init(d);
pcie_chassis_create(s->chassis);
rc = pcie_chassis_add_slot(s);
if (rc < 0) {
goto err_pcie_cap;
}
rc = pcie_aer_init(d, IOH_EP_AER_OFFSET, PCI_ERR_SIZEOF);
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);
}
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)
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