| 1 | /* |
| 2 | * QEMU Simba PCI bridge |
| 3 | * |
| 4 | * Copyright (c) 2006 Fabrice Bellard |
| 5 | * Copyright (c) 2012,2013 Artyom Tarasenko |
| 6 | * Copyright (c) 2018 Mark Cave-Ayland |
| 7 | * |
| 8 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 9 | * of this software and associated documentation files (the "Software"), to deal |
| 10 | * in the Software without restriction, including without limitation the rights |
| 11 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 12 | * copies of the Software, and to permit persons to whom the Software is |
| 13 | * furnished to do so, subject to the following conditions: |
| 14 | * |
| 15 | * The above copyright notice and this permission notice shall be included in |
| 16 | * all copies or substantial portions of the Software. |
| 17 | * |
| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 21 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 23 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 24 | * THE SOFTWARE. |
| 25 | */ |
| 26 | |
| 27 | #include "qemu/osdep.h" |
| 28 | #include "hw/pci/pci.h" |
| 29 | #include "hw/pci/pci_bridge.h" |
| 30 | #include "hw/pci/pci_bus.h" |
| 31 | #include "qemu/module.h" |
| 32 | #include "hw/pci-bridge/simba.h" |
| 33 | |
| 34 | /* |
| 35 | * Chipset docs: |
| 36 | * APB: "Advanced PCI Bridge (APB) User's Manual", |
| 37 | * http://www.sun.com/processors/manuals/805-1251.pdf |
| 38 | */ |
| 39 | |
| 40 | static void simba_pci_bridge_realize(PCIDevice *dev, Error **errp) |
| 41 | { |
| 42 | /* |
| 43 | * command register: |
| 44 | * According to PCI bridge spec, after reset |
| 45 | * bus master bit is off |
| 46 | * memory space enable bit is off |
| 47 | * According to manual (805-1251.pdf). |
| 48 | * the reset value should be zero unless the boot pin is tied high |
| 49 | * (which is true) and thus it should be PCI_COMMAND_MEMORY. |
| 50 | */ |
| 51 | SimbaPCIBridge *br = SIMBA_PCI_BRIDGE(dev); |
| 52 | |
| 53 | pci_bridge_initfn(dev, TYPE_PCI_BUS); |
| 54 | |
| 55 | pci_set_word(dev->config + PCI_COMMAND, PCI_COMMAND_MEMORY); |
| 56 | pci_set_word(dev->config + PCI_STATUS, |
| 57 | PCI_STATUS_FAST_BACK | PCI_STATUS_66MHZ | |
| 58 | PCI_STATUS_DEVSEL_MEDIUM); |
| 59 | |
| 60 | /* Allow 32-bit IO addresses */ |
| 61 | pci_set_word(dev->config + PCI_IO_BASE, PCI_IO_RANGE_TYPE_32); |
| 62 | pci_set_word(dev->config + PCI_IO_LIMIT, PCI_IO_RANGE_TYPE_32); |
| 63 | pci_set_word(dev->wmask + PCI_IO_BASE_UPPER16, 0xffff); |
| 64 | pci_set_word(dev->wmask + PCI_IO_LIMIT_UPPER16, 0xffff); |
| 65 | |
| 66 | pci_bridge_update_mappings(PCI_BRIDGE(br)); |
| 67 | } |
| 68 | |
| 69 | static void simba_pci_bridge_class_init(ObjectClass *klass, const void *data) |
| 70 | { |
| 71 | DeviceClass *dc = DEVICE_CLASS(klass); |
| 72 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
| 73 | |
| 74 | k->realize = simba_pci_bridge_realize; |
| 75 | k->exit = pci_bridge_exitfn; |
| 76 | k->vendor_id = PCI_VENDOR_ID_SUN; |
| 77 | k->device_id = PCI_DEVICE_ID_SUN_SIMBA; |
| 78 | k->revision = 0x11; |
| 79 | k->config_write = pci_bridge_write_config; |
| 80 | set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); |
| 81 | device_class_set_legacy_reset(dc, pci_bridge_reset); |
| 82 | dc->vmsd = &vmstate_pci_device; |
| 83 | } |
| 84 | |
| 85 | static const TypeInfo simba_pci_bridge_info = { |
| 86 | .name = TYPE_SIMBA_PCI_BRIDGE, |
| 87 | .parent = TYPE_PCI_BRIDGE, |
| 88 | .class_init = simba_pci_bridge_class_init, |
| 89 | .instance_size = sizeof(SimbaPCIBridge), |
| 90 | .interfaces = (const InterfaceInfo[]) { |
| 91 | { INTERFACE_CONVENTIONAL_PCI_DEVICE }, |
| 92 | { }, |
| 93 | }, |
| 94 | }; |
| 95 | |
| 96 | static void simba_register_types(void) |
| 97 | { |
| 98 | type_register_static(&simba_pci_bridge_info); |
| 99 | } |
| 100 | |
| 101 | type_init(simba_register_types) |