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 "xio3130_upstream.h" 27 #include "qapi/error.h" 28 29 #define PCI_DEVICE_ID_TI_XIO3130U 0x8232 /* upstream port */ 30 #define XIO3130_REVISION 0x2 31 #define XIO3130_MSI_OFFSET 0x70 32 #define XIO3130_MSI_SUPPORTED_FLAGS PCI_MSI_FLAGS_64BIT 33 #define XIO3130_MSI_NR_VECTOR 1 34 #define XIO3130_SSVID_OFFSET 0x80 35 #define XIO3130_SSVID_SVID 0 36 #define XIO3130_SSVID_SSID 0 37 #define XIO3130_EXP_OFFSET 0x90 38 #define XIO3130_AER_OFFSET 0x100 39 40 static void xio3130_upstream_write_config(PCIDevice *d, uint32_t address, 41 uint32_t val, int len) 42 { 43 pci_bridge_write_config(d, address, val, len); 44 pcie_cap_flr_write_config(d, address, val, len); 45 pcie_aer_write_config(d, address, val, len); 46 } 47 48 static void xio3130_upstream_reset(DeviceState *qdev) 49 { 50 PCIDevice *d = PCI_DEVICE(qdev); 51 52 pci_bridge_reset(qdev); 53 pcie_cap_deverr_reset(d); 54 } 55 56 static void xio3130_upstream_realize(PCIDevice *d, Error **errp) 57 { 58 PCIEPort *p = PCIE_PORT(d); 59 int rc; 60 61 pci_bridge_initfn(d, TYPE_PCIE_BUS); 62 pcie_port_init_reg(d); 63 64 rc = msi_init(d, XIO3130_MSI_OFFSET, XIO3130_MSI_NR_VECTOR, 65 XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_64BIT, 66 XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_MASKBIT, 67 errp); 68 if (rc < 0) { 69 assert(rc == -ENOTSUP); 70 goto err_bridge; 71 } 72 73 rc = pci_bridge_ssvid_init(d, XIO3130_SSVID_OFFSET, 74 XIO3130_SSVID_SVID, XIO3130_SSVID_SSID, 75 errp); 76 if (rc < 0) { 77 goto err_bridge; 78 } 79 80 rc = pcie_cap_init(d, XIO3130_EXP_OFFSET, PCI_EXP_TYPE_UPSTREAM, 81 p->port, errp); 82 if (rc < 0) { 83 goto err_msi; 84 } 85 pcie_cap_flr_init(d); 86 pcie_cap_deverr_init(d); 87 88 rc = pcie_aer_init(d, PCI_ERR_VER, XIO3130_AER_OFFSET, 89 PCI_ERR_SIZEOF, errp); 90 if (rc < 0) { 91 goto err; 92 } 93 94 return; 95 96 err: 97 pcie_cap_exit(d); 98 err_msi: 99 msi_uninit(d); 100 err_bridge: 101 pci_bridge_exitfn(d); 102 } 103 104 static void xio3130_upstream_exitfn(PCIDevice *d) 105 { 106 pcie_aer_exit(d); 107 pcie_cap_exit(d); 108 msi_uninit(d); 109 pci_bridge_exitfn(d); 110 } 111 112 PCIEPort *xio3130_upstream_init(PCIBus *bus, int devfn, bool multifunction, 113 const char *bus_name, pci_map_irq_fn map_irq, 114 uint8_t port) 115 { 116 PCIDevice *d; 117 PCIBridge *br; 118 DeviceState *qdev; 119 120 d = pci_create_multifunction(bus, devfn, multifunction, "x3130-upstream"); 121 if (!d) { 122 return NULL; 123 } 124 br = PCI_BRIDGE(d); 125 126 qdev = DEVICE(d); 127 pci_bridge_map_irq(br, bus_name, map_irq); 128 qdev_prop_set_uint8(qdev, "port", port); 129 qdev_init_nofail(qdev); 130 131 return PCIE_PORT(d); 132 } 133 134 static const VMStateDescription vmstate_xio3130_upstream = { 135 .name = "xio3130-express-upstream-port", 136 .version_id = 1, 137 .minimum_version_id = 1, 138 .fields = (VMStateField[]) { 139 VMSTATE_PCI_DEVICE(parent_obj.parent_obj, PCIEPort), 140 VMSTATE_STRUCT(parent_obj.parent_obj.exp.aer_log, PCIEPort, 0, 141 vmstate_pcie_aer_log, PCIEAERLog), 142 VMSTATE_END_OF_LIST() 143 } 144 }; 145 146 static void xio3130_upstream_class_init(ObjectClass *klass, void *data) 147 { 148 DeviceClass *dc = DEVICE_CLASS(klass); 149 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 150 151 k->is_express = 1; 152 k->is_bridge = 1; 153 k->config_write = xio3130_upstream_write_config; 154 k->realize = xio3130_upstream_realize; 155 k->exit = xio3130_upstream_exitfn; 156 k->vendor_id = PCI_VENDOR_ID_TI; 157 k->device_id = PCI_DEVICE_ID_TI_XIO3130U; 158 k->revision = XIO3130_REVISION; 159 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); 160 dc->desc = "TI X3130 Upstream Port of PCI Express Switch"; 161 dc->reset = xio3130_upstream_reset; 162 dc->vmsd = &vmstate_xio3130_upstream; 163 } 164 165 static const TypeInfo xio3130_upstream_info = { 166 .name = "x3130-upstream", 167 .parent = TYPE_PCIE_PORT, 168 .class_init = xio3130_upstream_class_init, 169 }; 170 171 static void xio3130_upstream_register_types(void) 172 { 173 type_register_static(&xio3130_upstream_info); 174 } 175 176 type_init(xio3130_upstream_register_types) 177