1 /* 2 * ioh3420.c 3 * Intel X58 north bridge IOH 4 * PCI Express root port device id 3420 5 * 6 * Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp> 7 * VA Linux Systems Japan K.K. 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License along 20 * with this program; if not, see <http://www.gnu.org/licenses/>. 21 */ 22 23 #include "hw/pci/pci_ids.h" 24 #include "hw/pci/msi.h" 25 #include "hw/pci/pcie.h" 26 #include "ioh3420.h" 27 28 #define PCI_DEVICE_ID_IOH_EPORT 0x3420 /* D0:F0 express mode */ 29 #define PCI_DEVICE_ID_IOH_REV 0x2 30 #define IOH_EP_SSVID_OFFSET 0x40 31 #define IOH_EP_SSVID_SVID PCI_VENDOR_ID_INTEL 32 #define IOH_EP_SSVID_SSID 0 33 #define IOH_EP_MSI_OFFSET 0x60 34 #define IOH_EP_MSI_SUPPORTED_FLAGS PCI_MSI_FLAGS_MASKBIT 35 #define IOH_EP_MSI_NR_VECTOR 2 36 #define IOH_EP_EXP_OFFSET 0x90 37 #define IOH_EP_AER_OFFSET 0x100 38 39 /* 40 * If two MSI vector are allocated, Advanced Error Interrupt Message Number 41 * is 1. otherwise 0. 42 * 17.12.5.10 RPERRSTS, 32:27 bit Advanced Error Interrupt Message Number. 43 */ 44 static uint8_t ioh3420_aer_vector(const PCIDevice *d) 45 { 46 switch (msi_nr_vectors_allocated(d)) { 47 case 1: 48 return 0; 49 case 2: 50 return 1; 51 case 4: 52 case 8: 53 case 16: 54 case 32: 55 default: 56 break; 57 } 58 abort(); 59 return 0; 60 } 61 62 static void ioh3420_aer_vector_update(PCIDevice *d) 63 { 64 pcie_aer_root_set_vector(d, ioh3420_aer_vector(d)); 65 } 66 67 static void ioh3420_write_config(PCIDevice *d, 68 uint32_t address, uint32_t val, int len) 69 { 70 uint32_t root_cmd = 71 pci_get_long(d->config + d->exp.aer_cap + PCI_ERR_ROOT_COMMAND); 72 73 pci_bridge_write_config(d, address, val, len); 74 ioh3420_aer_vector_update(d); 75 pcie_cap_slot_write_config(d, address, val, len); 76 pcie_aer_write_config(d, address, val, len); 77 pcie_aer_root_write_config(d, address, val, len, root_cmd); 78 } 79 80 static void ioh3420_reset(DeviceState *qdev) 81 { 82 PCIDevice *d = PCI_DEVICE(qdev); 83 84 ioh3420_aer_vector_update(d); 85 pcie_cap_root_reset(d); 86 pcie_cap_deverr_reset(d); 87 pcie_cap_slot_reset(d); 88 pcie_aer_root_reset(d); 89 pci_bridge_reset(qdev); 90 pci_bridge_disable_base_limit(d); 91 } 92 93 static int ioh3420_initfn(PCIDevice *d) 94 { 95 PCIBridge* br = DO_UPCAST(PCIBridge, dev, d); 96 PCIEPort *p = DO_UPCAST(PCIEPort, br, br); 97 PCIESlot *s = DO_UPCAST(PCIESlot, port, p); 98 int rc; 99 100 rc = pci_bridge_initfn(d, TYPE_PCIE_BUS); 101 if (rc < 0) { 102 return rc; 103 } 104 105 pcie_port_init_reg(d); 106 107 rc = pci_bridge_ssvid_init(d, IOH_EP_SSVID_OFFSET, 108 IOH_EP_SSVID_SVID, IOH_EP_SSVID_SSID); 109 if (rc < 0) { 110 goto err_bridge; 111 } 112 rc = msi_init(d, IOH_EP_MSI_OFFSET, IOH_EP_MSI_NR_VECTOR, 113 IOH_EP_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_64BIT, 114 IOH_EP_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_MASKBIT); 115 if (rc < 0) { 116 goto err_bridge; 117 } 118 rc = pcie_cap_init(d, IOH_EP_EXP_OFFSET, PCI_EXP_TYPE_ROOT_PORT, p->port); 119 if (rc < 0) { 120 goto err_msi; 121 } 122 pcie_cap_deverr_init(d); 123 pcie_cap_slot_init(d, s->slot); 124 pcie_chassis_create(s->chassis); 125 rc = pcie_chassis_add_slot(s); 126 if (rc < 0) { 127 goto err_pcie_cap; 128 } 129 pcie_cap_root_init(d); 130 rc = pcie_aer_init(d, IOH_EP_AER_OFFSET); 131 if (rc < 0) { 132 goto err; 133 } 134 pcie_aer_root_init(d); 135 ioh3420_aer_vector_update(d); 136 return 0; 137 138 err: 139 pcie_chassis_del_slot(s); 140 err_pcie_cap: 141 pcie_cap_exit(d); 142 err_msi: 143 msi_uninit(d); 144 err_bridge: 145 pci_bridge_exitfn(d); 146 return rc; 147 } 148 149 static void ioh3420_exitfn(PCIDevice *d) 150 { 151 PCIBridge* br = DO_UPCAST(PCIBridge, dev, d); 152 PCIEPort *p = DO_UPCAST(PCIEPort, br, br); 153 PCIESlot *s = DO_UPCAST(PCIESlot, port, p); 154 155 pcie_aer_exit(d); 156 pcie_chassis_del_slot(s); 157 pcie_cap_exit(d); 158 msi_uninit(d); 159 pci_bridge_exitfn(d); 160 } 161 162 PCIESlot *ioh3420_init(PCIBus *bus, int devfn, bool multifunction, 163 const char *bus_name, pci_map_irq_fn map_irq, 164 uint8_t port, uint8_t chassis, uint16_t slot) 165 { 166 PCIDevice *d; 167 PCIBridge *br; 168 DeviceState *qdev; 169 170 d = pci_create_multifunction(bus, devfn, multifunction, "ioh3420"); 171 if (!d) { 172 return NULL; 173 } 174 br = DO_UPCAST(PCIBridge, dev, d); 175 176 qdev = &br->dev.qdev; 177 pci_bridge_map_irq(br, bus_name, map_irq); 178 qdev_prop_set_uint8(qdev, "port", port); 179 qdev_prop_set_uint8(qdev, "chassis", chassis); 180 qdev_prop_set_uint16(qdev, "slot", slot); 181 qdev_init_nofail(qdev); 182 183 return DO_UPCAST(PCIESlot, port, DO_UPCAST(PCIEPort, br, br)); 184 } 185 186 static const VMStateDescription vmstate_ioh3420 = { 187 .name = "ioh-3240-express-root-port", 188 .version_id = 1, 189 .minimum_version_id = 1, 190 .minimum_version_id_old = 1, 191 .post_load = pcie_cap_slot_post_load, 192 .fields = (VMStateField[]) { 193 VMSTATE_PCIE_DEVICE(port.br.dev, PCIESlot), 194 VMSTATE_STRUCT(port.br.dev.exp.aer_log, PCIESlot, 0, 195 vmstate_pcie_aer_log, PCIEAERLog), 196 VMSTATE_END_OF_LIST() 197 } 198 }; 199 200 static Property ioh3420_properties[] = { 201 DEFINE_PROP_UINT8("port", PCIESlot, port.port, 0), 202 DEFINE_PROP_UINT8("chassis", PCIESlot, chassis, 0), 203 DEFINE_PROP_UINT16("slot", PCIESlot, slot, 0), 204 DEFINE_PROP_UINT16("aer_log_max", PCIESlot, 205 port.br.dev.exp.aer_log.log_max, 206 PCIE_AER_LOG_MAX_DEFAULT), 207 DEFINE_PROP_END_OF_LIST(), 208 }; 209 210 static void ioh3420_class_init(ObjectClass *klass, void *data) 211 { 212 DeviceClass *dc = DEVICE_CLASS(klass); 213 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 214 215 k->is_express = 1; 216 k->is_bridge = 1; 217 k->config_write = ioh3420_write_config; 218 k->init = ioh3420_initfn; 219 k->exit = ioh3420_exitfn; 220 k->vendor_id = PCI_VENDOR_ID_INTEL; 221 k->device_id = PCI_DEVICE_ID_IOH_EPORT; 222 k->revision = PCI_DEVICE_ID_IOH_REV; 223 dc->desc = "Intel IOH device id 3420 PCIE Root Port"; 224 dc->reset = ioh3420_reset; 225 dc->vmsd = &vmstate_ioh3420; 226 dc->props = ioh3420_properties; 227 } 228 229 static const TypeInfo ioh3420_info = { 230 .name = "ioh3420", 231 .parent = TYPE_PCI_DEVICE, 232 .instance_size = sizeof(PCIESlot), 233 .class_init = ioh3420_class_init, 234 }; 235 236 static void ioh3420_register_types(void) 237 { 238 type_register_static(&ioh3420_info); 239 } 240 241 type_init(ioh3420_register_types) 242 243 /* 244 * Local variables: 245 * c-indent-level: 4 246 * c-basic-offset: 4 247 * tab-width: 8 248 * indent-tab-mode: nil 249 * End: 250 */ 251