diff options
Diffstat (limited to 'hw/xio3130_downstream.c')
| -rw-r--r-- | hw/xio3130_downstream.c | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/hw/xio3130_downstream.c b/hw/xio3130_downstream.c new file mode 100644 index 0000000..a44e188 --- /dev/null +++ b/hw/xio3130_downstream.c @@ -0,0 +1,190 @@ +/* + * x3130_downstream.c + * TI X3130 pci express downstream port switch + * + * 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 "pci_ids.h" +#include "msi.h" +#include "pcie.h" +#include "xio3130_downstream.h" + +#define PCI_DEVICE_ID_TI_XIO3130D 0x8233 /* downstream port */ +#define XIO3130_REVISION 0x1 +#define XIO3130_MSI_OFFSET 0x70 +#define XIO3130_MSI_SUPPORTED_FLAGS PCI_MSI_FLAGS_64BIT +#define XIO3130_MSI_NR_VECTOR 1 +#define XIO3130_SSVID_OFFSET 0x80 +#define XIO3130_SSVID_SVID 0 +#define XIO3130_SSVID_SSID 0 +#define XIO3130_EXP_OFFSET 0x90 +#define XIO3130_AER_OFFSET 0x100 + +static void xio3130_downstream_write_config(PCIDevice *d, uint32_t address, + uint32_t val, int len) +{ + uint16_t sltctl = + pci_get_word(d->config + d->exp.exp_cap + PCI_EXP_SLTCTL); + + pci_bridge_write_config(d, address, val, len); + pcie_cap_flr_write_config(d, address, val, len); + pcie_cap_slot_write_config(d, address, val, len, sltctl); + msi_write_config(d, address, val, len); + /* TODO: AER */ +} + +static void xio3130_downstream_reset(DeviceState *qdev) +{ + PCIDevice *d = DO_UPCAST(PCIDevice, qdev, qdev); + msi_reset(d); + pcie_cap_deverr_reset(d); + pcie_cap_slot_reset(d); + pcie_cap_ari_reset(d); + pci_bridge_reset(qdev); +} + +static int xio3130_downstream_initfn(PCIDevice *d) +{ + PCIBridge* br = DO_UPCAST(PCIBridge, dev, d); + PCIEPort *p = DO_UPCAST(PCIEPort, br, br); + PCIESlot *s = DO_UPCAST(PCIESlot, port, p); + int rc; + + rc = pci_bridge_initfn(d); + if (rc < 0) { + return rc; + } + + pcie_port_init_reg(d); + pci_config_set_vendor_id(d->config, PCI_VENDOR_ID_TI); + pci_config_set_device_id(d->config, PCI_DEVICE_ID_TI_XIO3130D); + d->config[PCI_REVISION_ID] = XIO3130_REVISION; + + rc = msi_init(d, XIO3130_MSI_OFFSET, XIO3130_MSI_NR_VECTOR, + XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_64BIT, + XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_MASKBIT); + if (rc < 0) { + return rc; + } + rc = pci_bridge_ssvid_init(d, XIO3130_SSVID_OFFSET, + XIO3130_SSVID_SVID, XIO3130_SSVID_SSID); + if (rc < 0) { + return rc; + } + rc = pcie_cap_init(d, XIO3130_EXP_OFFSET, PCI_EXP_TYPE_DOWNSTREAM, + p->port); + if (rc < 0) { + return rc; + } + pcie_cap_flr_init(d); /* TODO: implement FLR */ + 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) { + return rc; + } + pcie_cap_ari_init(d); + /* TODO: AER */ + + return 0; +} + +static int xio3130_downstream_exitfn(PCIDevice *d) +{ + /* TODO: AER */ + msi_uninit(d); + pcie_cap_exit(d); + return pci_bridge_exitfn(d); +} + +PCIESlot *xio3130_downstream_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, + "xio3130-downstream"); + if (!d) { + return NULL; + } + br = DO_UPCAST(PCIBridge, dev, d); + + qdev = &br->dev.qdev; + 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 DO_UPCAST(PCIESlot, port, DO_UPCAST(PCIEPort, br, br)); +} + +static const VMStateDescription vmstate_xio3130_downstream = { + .name = "xio3130-express-downstream-port", + .version_id = 1, + .minimum_version_id = 1, + .minimum_version_id_old = 1, + .fields = (VMStateField[]) { + VMSTATE_PCIE_DEVICE(port.br.dev, PCIESlot), + /* TODO: AER */ + VMSTATE_END_OF_LIST() + } +}; + +static PCIDeviceInfo xio3130_downstream_info = { + .qdev.name = "xio3130-downstream", + .qdev.desc = "TI X3130 Downstream Port of PCI Express Switch", + .qdev.size = sizeof(PCIESlot), + .qdev.reset = xio3130_downstream_reset, + .qdev.vmsd = &vmstate_xio3130_downstream, + + .is_express = 1, + .is_bridge = 1, + .config_write = xio3130_downstream_write_config, + .init = xio3130_downstream_initfn, + .exit = xio3130_downstream_exitfn, + + .qdev.props = (Property[]) { + DEFINE_PROP_UINT8("port", PCIESlot, port.port, 0), + DEFINE_PROP_UINT8("chassis", PCIESlot, chassis, 0), + DEFINE_PROP_UINT16("slot", PCIESlot, slot, 0), + /* TODO: AER */ + DEFINE_PROP_END_OF_LIST(), + } +}; + +static void xio3130_downstream_register(void) +{ + pci_qdev_register(&xio3130_downstream_info); +} + +device_init(xio3130_downstream_register); + +/* + * Local variables: + * c-indent-level: 4 + * c-basic-offset: 4 + * tab-width: 8 + * indent-tab-mode: nil + * End: + */ |