Annotation of qemu/hw/grackle_pci.c, revision 1.1.1.10

1.1       root        1: /*
1.1.1.3   root        2:  * QEMU Grackle PCI host (heathrow OldWorld PowerMac)
                      3:  *
                      4:  * Copyright (c) 2006-2007 Fabrice Bellard
                      5:  * Copyright (c) 2007 Jocelyn Mayer
1.1       root        6:  *
                      7:  * Permission is hereby granted, free of charge, to any person obtaining a copy
                      8:  * of this software and associated documentation files (the "Software"), to deal
                      9:  * in the Software without restriction, including without limitation the rights
                     10:  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
                     11:  * copies of the Software, and to permit persons to whom the Software is
                     12:  * furnished to do so, subject to the following conditions:
                     13:  *
                     14:  * The above copyright notice and this permission notice shall be included in
                     15:  * all copies or substantial portions of the Software.
                     16:  *
                     17:  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
                     18:  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
                     19:  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
                     20:  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
                     21:  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
                     22:  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
                     23:  * THE SOFTWARE.
                     24:  */
                     25: 
1.1.1.6   root       26: #include "sysbus.h"
1.1.1.3   root       27: #include "ppc_mac.h"
                     28: #include "pci.h"
1.1.1.6   root       29: #include "pci_host.h"
1.1.1.3   root       30: 
1.1.1.4   root       31: /* debug Grackle */
                     32: //#define DEBUG_GRACKLE
                     33: 
                     34: #ifdef DEBUG_GRACKLE
1.1.1.5   root       35: #define GRACKLE_DPRINTF(fmt, ...)                               \
                     36:     do { printf("GRACKLE: " fmt , ## __VA_ARGS__); } while (0)
1.1.1.4   root       37: #else
1.1.1.5   root       38: #define GRACKLE_DPRINTF(fmt, ...)
1.1.1.4   root       39: #endif
                     40: 
1.1.1.6   root       41: typedef struct GrackleState {
                     42:     SysBusDevice busdev;
                     43:     PCIHostState host_state;
1.1.1.10! root       44:     MemoryRegion pci_mmio;
        !            45:     MemoryRegion pci_hole;
1.1.1.6   root       46: } GrackleState;
1.1       root       47: 
1.1.1.2   root       48: /* Don't know if this matches real hardware, but it agrees with OHW.  */
                     49: static int pci_grackle_map_irq(PCIDevice *pci_dev, int irq_num)
1.1       root       50: {
1.1.1.2   root       51:     return (irq_num + (pci_dev->devfn >> 3)) & 3;
                     52: }
                     53: 
1.1.1.6   root       54: static void pci_grackle_set_irq(void *opaque, int irq_num, int level)
1.1.1.2   root       55: {
1.1.1.6   root       56:     qemu_irq *pic = opaque;
                     57: 
1.1.1.4   root       58:     GRACKLE_DPRINTF("set_irq num %d level %d\n", irq_num, level);
1.1.1.3   root       59:     qemu_set_irq(pic[irq_num + 0x15], level);
1.1       root       60: }
                     61: 
1.1.1.4   root       62: static void pci_grackle_reset(void *opaque)
                     63: {
                     64: }
                     65: 
1.1.1.10! root       66: PCIBus *pci_grackle_init(uint32_t base, qemu_irq *pic,
        !            67:                          MemoryRegion *address_space_mem,
        !            68:                          MemoryRegion *address_space_io)
1.1       root       69: {
1.1.1.6   root       70:     DeviceState *dev;
                     71:     SysBusDevice *s;
                     72:     GrackleState *d;
                     73: 
                     74:     dev = qdev_create(NULL, "grackle");
                     75:     qdev_init_nofail(dev);
                     76:     s = sysbus_from_qdev(dev);
                     77:     d = FROM_SYSBUS(GrackleState, s);
1.1.1.10! root       78: 
        !            79:     memory_region_init(&d->pci_mmio, "pci-mmio", 0x100000000ULL);
        !            80:     memory_region_init_alias(&d->pci_hole, "pci-hole", &d->pci_mmio,
        !            81:                              0x80000000ULL, 0x7e000000ULL);
        !            82:     memory_region_add_subregion(address_space_mem, 0x80000000ULL,
        !            83:                                 &d->pci_hole);
        !            84: 
1.1.1.6   root       85:     d->host_state.bus = pci_register_bus(&d->busdev.qdev, "pci",
                     86:                                          pci_grackle_set_irq,
                     87:                                          pci_grackle_map_irq,
1.1.1.10! root       88:                                          pic,
        !            89:                                          &d->pci_mmio,
        !            90:                                          address_space_io,
        !            91:                                          0, 4);
1.1.1.6   root       92: 
                     93:     pci_create_simple(d->host_state.bus, 0, "grackle");
                     94: 
                     95:     sysbus_mmio_map(s, 0, base);
                     96:     sysbus_mmio_map(s, 1, base + 0x00200000);
                     97: 
                     98:     return d->host_state.bus;
                     99: }
                    100: 
                    101: static int pci_grackle_init_device(SysBusDevice *dev)
                    102: {
1.1       root      103:     GrackleState *s;
                    104: 
1.1.1.6   root      105:     s = FROM_SYSBUS(GrackleState, dev);
                    106: 
1.1.1.10! root      107:     memory_region_init_io(&s->host_state.conf_mem, &pci_host_conf_le_ops,
        !           108:                           &s->host_state, "pci-conf-idx", 0x1000);
        !           109:     memory_region_init_io(&s->host_state.data_mem, &pci_host_data_le_ops,
        !           110:                           &s->host_state, "pci-data-idx", 0x1000);
        !           111:     sysbus_init_mmio_region(dev, &s->host_state.conf_mem);
        !           112:     sysbus_init_mmio_region(dev, &s->host_state.data_mem);
1.1.1.6   root      113: 
                    114:     qemu_register_reset(pci_grackle_reset, &s->host_state);
                    115:     return 0;
                    116: }
                    117: 
                    118: static int grackle_pci_host_init(PCIDevice *d)
                    119: {
1.1       root      120:     d->config[0x09] = 0x01;
1.1.1.6   root      121:     return 0;
                    122: }
1.1.1.4   root      123: 
1.1.1.6   root      124: static PCIDeviceInfo grackle_pci_host_info = {
                    125:     .qdev.name = "grackle",
                    126:     .qdev.size = sizeof(PCIDevice),
                    127:     .init      = grackle_pci_host_init,
1.1.1.9   root      128:     .vendor_id = PCI_VENDOR_ID_MOTOROLA,
                    129:     .device_id = PCI_DEVICE_ID_MOTOROLA_MPC106,
                    130:     .revision  = 0x00,
                    131:     .class_id  = PCI_CLASS_BRIDGE_HOST,
1.1.1.6   root      132: };
                    133: 
                    134: static void grackle_register_devices(void)
                    135: {
                    136:     sysbus_register_dev("grackle", sizeof(GrackleState),
                    137:                         pci_grackle_init_device);
                    138:     pci_qdev_register(&grackle_pci_host_info);
1.1       root      139: }
1.1.1.6   root      140: 
                    141: device_init(grackle_register_devices)

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