]> Git Repo - qemu.git/blob - hw/sh4/sh_pci.c
Merge remote-tracking branch 'remotes/armbru/tags/pull-misc-2019-06-11-v3' into staging
[qemu.git] / hw / sh4 / sh_pci.c
1 /*
2  * SuperH on-chip PCIC emulation.
3  *
4  * Copyright (c) 2008 Takashi YOSHII
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 "qemu/osdep.h"
26 #include "hw/sysbus.h"
27 #include "hw/sh4/sh.h"
28 #include "hw/pci/pci.h"
29 #include "hw/pci/pci_host.h"
30 #include "qemu/bswap.h"
31 #include "qemu/module.h"
32 #include "exec/address-spaces.h"
33
34 #define TYPE_SH_PCI_HOST_BRIDGE "sh_pci"
35
36 #define SH_PCI_HOST_BRIDGE(obj) \
37     OBJECT_CHECK(SHPCIState, (obj), TYPE_SH_PCI_HOST_BRIDGE)
38
39 typedef struct SHPCIState {
40     PCIHostState parent_obj;
41
42     PCIDevice *dev;
43     qemu_irq irq[4];
44     MemoryRegion memconfig_p4;
45     MemoryRegion memconfig_a7;
46     MemoryRegion isa;
47     uint32_t par;
48     uint32_t mbr;
49     uint32_t iobr;
50 } SHPCIState;
51
52 static void sh_pci_reg_write (void *p, hwaddr addr, uint64_t val,
53                               unsigned size)
54 {
55     SHPCIState *pcic = p;
56     PCIHostState *phb = PCI_HOST_BRIDGE(pcic);
57
58     switch(addr) {
59     case 0 ... 0xfc:
60         stl_le_p(pcic->dev->config + addr, val);
61         break;
62     case 0x1c0:
63         pcic->par = val;
64         break;
65     case 0x1c4:
66         pcic->mbr = val & 0xff000001;
67         break;
68     case 0x1c8:
69         if ((val & 0xfffc0000) != (pcic->iobr & 0xfffc0000)) {
70             memory_region_del_subregion(get_system_memory(), &pcic->isa);
71             pcic->iobr = val & 0xfffc0001;
72             memory_region_add_subregion(get_system_memory(),
73                                         pcic->iobr & 0xfffc0000, &pcic->isa);
74         }
75         break;
76     case 0x220:
77         pci_data_write(phb->bus, pcic->par, val, 4);
78         break;
79     }
80 }
81
82 static uint64_t sh_pci_reg_read (void *p, hwaddr addr,
83                                  unsigned size)
84 {
85     SHPCIState *pcic = p;
86     PCIHostState *phb = PCI_HOST_BRIDGE(pcic);
87
88     switch(addr) {
89     case 0 ... 0xfc:
90         return ldl_le_p(pcic->dev->config + addr);
91     case 0x1c0:
92         return pcic->par;
93     case 0x1c4:
94         return pcic->mbr;
95     case 0x1c8:
96         return pcic->iobr;
97     case 0x220:
98         return pci_data_read(phb->bus, pcic->par, 4);
99     }
100     return 0;
101 }
102
103 static const MemoryRegionOps sh_pci_reg_ops = {
104     .read = sh_pci_reg_read,
105     .write = sh_pci_reg_write,
106     .endianness = DEVICE_NATIVE_ENDIAN,
107     .valid = {
108         .min_access_size = 4,
109         .max_access_size = 4,
110     },
111 };
112
113 static int sh_pci_map_irq(PCIDevice *d, int irq_num)
114 {
115     return (d->devfn >> 3);
116 }
117
118 static void sh_pci_set_irq(void *opaque, int irq_num, int level)
119 {
120     qemu_irq *pic = opaque;
121
122     qemu_set_irq(pic[irq_num], level);
123 }
124
125 static void sh_pci_device_realize(DeviceState *dev, Error **errp)
126 {
127     SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
128     SHPCIState *s = SH_PCI_HOST_BRIDGE(dev);
129     PCIHostState *phb = PCI_HOST_BRIDGE(s);
130     int i;
131
132     for (i = 0; i < 4; i++) {
133         sysbus_init_irq(sbd, &s->irq[i]);
134     }
135     phb->bus = pci_register_root_bus(DEVICE(dev), "pci",
136                                      sh_pci_set_irq, sh_pci_map_irq,
137                                      s->irq,
138                                      get_system_memory(),
139                                      get_system_io(),
140                                      PCI_DEVFN(0, 0), 4, TYPE_PCI_BUS);
141     memory_region_init_io(&s->memconfig_p4, OBJECT(s), &sh_pci_reg_ops, s,
142                           "sh_pci", 0x224);
143     memory_region_init_alias(&s->memconfig_a7, OBJECT(s), "sh_pci.2",
144                              &s->memconfig_p4, 0, 0x224);
145     memory_region_init_alias(&s->isa, OBJECT(s), "sh_pci.isa",
146                              get_system_io(), 0, 0x40000);
147     sysbus_init_mmio(sbd, &s->memconfig_p4);
148     sysbus_init_mmio(sbd, &s->memconfig_a7);
149     s->iobr = 0xfe240000;
150     memory_region_add_subregion(get_system_memory(), s->iobr, &s->isa);
151
152     s->dev = pci_create_simple(phb->bus, PCI_DEVFN(0, 0), "sh_pci_host");
153 }
154
155 static void sh_pci_host_realize(PCIDevice *d, Error **errp)
156 {
157     pci_set_word(d->config + PCI_COMMAND, PCI_COMMAND_WAIT);
158     pci_set_word(d->config + PCI_STATUS, PCI_STATUS_CAP_LIST |
159                  PCI_STATUS_FAST_BACK | PCI_STATUS_DEVSEL_MEDIUM);
160 }
161
162 static void sh_pci_host_class_init(ObjectClass *klass, void *data)
163 {
164     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
165     DeviceClass *dc = DEVICE_CLASS(klass);
166
167     k->realize = sh_pci_host_realize;
168     k->vendor_id = PCI_VENDOR_ID_HITACHI;
169     k->device_id = PCI_DEVICE_ID_HITACHI_SH7751R;
170     /*
171      * PCI-facing part of the host bridge, not usable without the
172      * host-facing part, which can't be device_add'ed, yet.
173      */
174     dc->user_creatable = false;
175 }
176
177 static const TypeInfo sh_pci_host_info = {
178     .name          = "sh_pci_host",
179     .parent        = TYPE_PCI_DEVICE,
180     .instance_size = sizeof(PCIDevice),
181     .class_init    = sh_pci_host_class_init,
182     .interfaces = (InterfaceInfo[]) {
183         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
184         { },
185     },
186 };
187
188 static void sh_pci_device_class_init(ObjectClass *klass, void *data)
189 {
190     DeviceClass *dc = DEVICE_CLASS(klass);
191
192     dc->realize = sh_pci_device_realize;
193 }
194
195 static const TypeInfo sh_pci_device_info = {
196     .name          = TYPE_SH_PCI_HOST_BRIDGE,
197     .parent        = TYPE_PCI_HOST_BRIDGE,
198     .instance_size = sizeof(SHPCIState),
199     .class_init    = sh_pci_device_class_init,
200 };
201
202 static void sh_pci_register_types(void)
203 {
204     type_register_static(&sh_pci_device_info);
205     type_register_static(&sh_pci_host_info);
206 }
207
208 type_init(sh_pci_register_types)
This page took 0.033481 seconds and 4 git commands to generate.