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Annotation of qemu/hw/piix4.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * QEMU PIIX4 PCI Bridge Emulation
                      3:  *
                      4:  * Copyright (c) 2006 Fabrice Bellard
                      5:  *
                      6:  * Permission is hereby granted, free of charge, to any person obtaining a copy
                      7:  * of this software and associated documentation files (the "Software"), to deal
                      8:  * in the Software without restriction, including without limitation the rights
                      9:  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
                     10:  * copies of the Software, and to permit persons to whom the Software is
                     11:  * furnished to do so, subject to the following conditions:
                     12:  *
                     13:  * The above copyright notice and this permission notice shall be included in
                     14:  * all copies or substantial portions of the Software.
                     15:  *
                     16:  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
                     17:  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
                     18:  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
                     19:  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
                     20:  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
                     21:  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
                     22:  * THE SOFTWARE.
                     23:  */
                     24: 
                     25: #include "hw.h"
                     26: #include "pc.h"
                     27: #include "pci.h"
                     28: #include "isa.h"
                     29: #include "sysbus.h"
                     30: 
                     31: PCIDevice *piix4_dev;
                     32: 
                     33: static void piix4_reset(void *opaque)
                     34: {
                     35:     PCIDevice *d = opaque;
                     36:     uint8_t *pci_conf = d->config;
                     37: 
                     38:     pci_conf[0x04] = 0x07; // master, memory and I/O
                     39:     pci_conf[0x05] = 0x00;
                     40:     pci_conf[0x06] = 0x00;
                     41:     pci_conf[0x07] = 0x02; // PCI_status_devsel_medium
                     42:     pci_conf[0x4c] = 0x4d;
                     43:     pci_conf[0x4e] = 0x03;
                     44:     pci_conf[0x4f] = 0x00;
                     45:     pci_conf[0x60] = 0x0a; // PCI A -> IRQ 10
                     46:     pci_conf[0x61] = 0x0a; // PCI B -> IRQ 10
                     47:     pci_conf[0x62] = 0x0b; // PCI C -> IRQ 11
                     48:     pci_conf[0x63] = 0x0b; // PCI D -> IRQ 11
                     49:     pci_conf[0x69] = 0x02;
                     50:     pci_conf[0x70] = 0x80;
                     51:     pci_conf[0x76] = 0x0c;
                     52:     pci_conf[0x77] = 0x0c;
                     53:     pci_conf[0x78] = 0x02;
                     54:     pci_conf[0x79] = 0x00;
                     55:     pci_conf[0x80] = 0x00;
                     56:     pci_conf[0x82] = 0x00;
                     57:     pci_conf[0xa0] = 0x08;
                     58:     pci_conf[0xa2] = 0x00;
                     59:     pci_conf[0xa3] = 0x00;
                     60:     pci_conf[0xa4] = 0x00;
                     61:     pci_conf[0xa5] = 0x00;
                     62:     pci_conf[0xa6] = 0x00;
                     63:     pci_conf[0xa7] = 0x00;
                     64:     pci_conf[0xa8] = 0x0f;
                     65:     pci_conf[0xaa] = 0x00;
                     66:     pci_conf[0xab] = 0x00;
                     67:     pci_conf[0xac] = 0x00;
                     68:     pci_conf[0xae] = 0x00;
                     69: }
                     70: 
                     71: static void piix_save(QEMUFile* f, void *opaque)
                     72: {
                     73:     PCIDevice *d = opaque;
                     74:     pci_device_save(d, f);
                     75: }
                     76: 
                     77: static int piix_load(QEMUFile* f, void *opaque, int version_id)
                     78: {
                     79:     PCIDevice *d = opaque;
                     80:     if (version_id != 2)
                     81:         return -EINVAL;
                     82:     return pci_device_load(d, f);
                     83: }
                     84: 
                     85: static int piix4_initfn(PCIDevice *d)
                     86: {
                     87:     uint8_t *pci_conf;
                     88: 
                     89:     isa_bus_new(&d->qdev);
                     90:     register_savevm("PIIX4", 0, 2, piix_save, piix_load, d);
                     91: 
                     92:     pci_conf = d->config;
                     93:     pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_INTEL);
                     94:     pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_INTEL_82371AB_0); // 82371AB/EB/MB PIIX4 PCI-to-ISA bridge
                     95:     pci_config_set_class(pci_conf, PCI_CLASS_BRIDGE_ISA);
                     96:     pci_conf[PCI_HEADER_TYPE] =
                     97:         PCI_HEADER_TYPE_NORMAL | PCI_HEADER_TYPE_MULTI_FUNCTION; // header_type = PCI_multifunction, generic
                     98: 
                     99:     piix4_dev = d;
                    100:     qemu_register_reset(piix4_reset, d);
                    101:     return 0;
                    102: }
                    103: 
                    104: int piix4_init(PCIBus *bus, int devfn)
                    105: {
                    106:     PCIDevice *d;
                    107: 
                    108:     d = pci_create_simple(bus, devfn, "PIIX4");
                    109:     return d->devfn;
                    110: }
                    111: 
                    112: static PCIDeviceInfo piix4_info[] = {
                    113:     {
                    114:         .qdev.name    = "PIIX4",
                    115:         .qdev.desc    = "ISA bridge",
                    116:         .qdev.size    = sizeof(PCIDevice),
                    117:         .qdev.no_user = 1,
                    118:         .init         = piix4_initfn,
                    119:     },{
                    120:         /* end of list */
                    121:     }
                    122: };
                    123: 
                    124: static void piix4_register(void)
                    125: {
                    126:     pci_qdev_register_many(piix4_info);
                    127: }
                    128: device_init(piix4_register);

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