1 /* 2 * xio3130_upstream.c 3 * TI X3130 pci express upstream port switch 4 * 5 * Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp> 6 * VA Linux Systems Japan K.K. 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License along 19 * with this program; if not, see <http://www.gnu.org/licenses/>. 20 */ 21 22 #include "qemu/osdep.h" 23 #include "hw/pci/pci_ids.h" 24 #include "hw/pci/msi.h" 25 #include "hw/pci/pcie.h" 26 #include "hw/pci/pcie_port.h" 27 #include "migration/vmstate.h" 28 #include "qemu/module.h" 29 30 #define PCI_DEVICE_ID_TI_XIO3130U 0x8232 /* upstream port */ 31 #define XIO3130_REVISION 0x2 32 #define XIO3130_MSI_OFFSET 0x70 33 #define XIO3130_MSI_SUPPORTED_FLAGS PCI_MSI_FLAGS_64BIT 34 #define XIO3130_MSI_NR_VECTOR 1 35 #define XIO3130_SSVID_OFFSET 0x80 36 #define XIO3130_SSVID_SVID 0 37 #define XIO3130_SSVID_SSID 0 38 #define XIO3130_EXP_OFFSET 0x90 39 #define XIO3130_AER_OFFSET 0x100 40 41 static void xio3130_upstream_write_config(PCIDevice *d, uint32_t address, 42 uint32_t val, int len) 43 { 44 pci_bridge_write_config(d, address, val, len); 45 pcie_cap_flr_write_config(d, address, val, len); 46 pcie_aer_write_config(d, address, val, len); 47 } 48 49 static void xio3130_upstream_reset(DeviceState *qdev) 50 { 51 PCIDevice *d = PCI_DEVICE(qdev); 52 53 pci_bridge_reset(qdev); 54 pcie_cap_deverr_reset(d); 55 } 56 57 static void xio3130_upstream_realize(PCIDevice *d, Error **errp) 58 { 59 PCIEPort *p = PCIE_PORT(d); 60 int rc; 61 62 pci_bridge_initfn(d, TYPE_PCIE_BUS); 63 pcie_port_init_reg(d); 64 65 rc = msi_init(d, XIO3130_MSI_OFFSET, XIO3130_MSI_NR_VECTOR, 66 XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_64BIT, 67 XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_MASKBIT, 68 errp); 69 if (rc < 0) { 70 assert(rc == -ENOTSUP); 71 goto err_bridge; 72 } 73 74 rc = pci_bridge_ssvid_init(d, XIO3130_SSVID_OFFSET, 75 XIO3130_SSVID_SVID, XIO3130_SSVID_SSID, 76 errp); 77 if (rc < 0) { 78 goto err_msi; 79 } 80 81 rc = pcie_cap_init(d, XIO3130_EXP_OFFSET, PCI_EXP_TYPE_UPSTREAM, 82 p->port, errp); 83 if (rc < 0) { 84 goto err_msi; 85 } 86 pcie_cap_flr_init(d); 87 pcie_cap_deverr_init(d); 88 89 rc = pcie_aer_init(d, PCI_ERR_VER, XIO3130_AER_OFFSET, 90 PCI_ERR_SIZEOF, errp); 91 if (rc < 0) { 92 goto err; 93 } 94 95 return; 96 97 err: 98 pcie_cap_exit(d); 99 err_msi: 100 msi_uninit(d); 101 err_bridge: 102 pci_bridge_exitfn(d); 103 } 104 105 static void xio3130_upstream_exitfn(PCIDevice *d) 106 { 107 pcie_aer_exit(d); 108 pcie_cap_exit(d); 109 msi_uninit(d); 110 pci_bridge_exitfn(d); 111 } 112 113 static const VMStateDescription vmstate_xio3130_upstream = { 114 .name = "xio3130-express-upstream-port", 115 .priority = MIG_PRI_PCI_BUS, 116 .version_id = 1, 117 .minimum_version_id = 1, 118 .fields = (VMStateField[]) { 119 VMSTATE_PCI_DEVICE(parent_obj.parent_obj, PCIEPort), 120 VMSTATE_STRUCT(parent_obj.parent_obj.exp.aer_log, PCIEPort, 0, 121 vmstate_pcie_aer_log, PCIEAERLog), 122 VMSTATE_END_OF_LIST() 123 } 124 }; 125 126 static void xio3130_upstream_class_init(ObjectClass *klass, void *data) 127 { 128 DeviceClass *dc = DEVICE_CLASS(klass); 129 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 130 131 k->is_bridge = true; 132 k->config_write = xio3130_upstream_write_config; 133 k->realize = xio3130_upstream_realize; 134 k->exit = xio3130_upstream_exitfn; 135 k->vendor_id = PCI_VENDOR_ID_TI; 136 k->device_id = PCI_DEVICE_ID_TI_XIO3130U; 137 k->revision = XIO3130_REVISION; 138 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); 139 dc->desc = "TI X3130 Upstream Port of PCI Express Switch"; 140 dc->reset = xio3130_upstream_reset; 141 dc->vmsd = &vmstate_xio3130_upstream; 142 } 143 144 static const TypeInfo xio3130_upstream_info = { 145 .name = "x3130-upstream", 146 .parent = TYPE_PCIE_PORT, 147 .class_init = xio3130_upstream_class_init, 148 .interfaces = (InterfaceInfo[]) { 149 { INTERFACE_PCIE_DEVICE }, 150 { } 151 }, 152 }; 153 154 static void xio3130_upstream_register_types(void) 155 { 156 type_register_static(&xio3130_upstream_info); 157 } 158 159 type_init(xio3130_upstream_register_types) 160