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502a5395
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1/*
2 * QEMU Ultrasparc APB PCI host
3 *
4 * Copyright (c) 2006 Fabrice Bellard
5fafdf24 5 *
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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 */
80b3ada7 24
a94fd955 25/* XXX This file and most of its contents are somewhat misnamed. The
80b3ada7
PB
26 Ultrasparc PCI host is called the PCI Bus Module (PBM). The APB is
27 the secondary PCI bridge. */
28
72f44c8c 29#include "sysbus.h"
87ecb68b 30#include "pci.h"
a94fd955
BS
31
32/* debug APB */
33//#define DEBUG_APB
34
35#ifdef DEBUG_APB
001faf32
BS
36#define APB_DPRINTF(fmt, ...) \
37do { printf("APB: " fmt , ## __VA_ARGS__); } while (0)
a94fd955 38#else
001faf32 39#define APB_DPRINTF(fmt, ...)
a94fd955
BS
40#endif
41
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42typedef target_phys_addr_t pci_addr_t;
43#include "pci_host.h"
44
72f44c8c
BS
45typedef struct APBState {
46 SysBusDevice busdev;
47 PCIHostState host_state;
48} APBState;
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49
50static void pci_apb_config_writel (void *opaque, target_phys_addr_t addr,
51 uint32_t val)
52{
53 APBState *s = opaque;
502a5395 54
a94fd955
BS
55#ifdef TARGET_WORDS_BIGENDIAN
56 val = bswap32(val);
57#endif
58 APB_DPRINTF("config_writel addr " TARGET_FMT_plx " val %x\n", addr,
59 val);
72f44c8c 60 s->host_state.config_reg = val;
502a5395
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61}
62
63static uint32_t pci_apb_config_readl (void *opaque,
64 target_phys_addr_t addr)
65{
66 APBState *s = opaque;
67 uint32_t val;
502a5395 68
72f44c8c 69 val = s->host_state.config_reg;
a94fd955
BS
70#ifdef TARGET_WORDS_BIGENDIAN
71 val = bswap32(val);
72#endif
73 APB_DPRINTF("config_readl addr " TARGET_FMT_plx " val %x\n", addr,
74 val);
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75 return val;
76}
77
78static CPUWriteMemoryFunc *pci_apb_config_write[] = {
79 &pci_apb_config_writel,
80 &pci_apb_config_writel,
81 &pci_apb_config_writel,
82};
83
84static CPUReadMemoryFunc *pci_apb_config_read[] = {
85 &pci_apb_config_readl,
86 &pci_apb_config_readl,
87 &pci_apb_config_readl,
88};
89
90static void apb_config_writel (void *opaque, target_phys_addr_t addr,
f930d07e 91 uint32_t val)
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92{
93 //PCIBus *s = opaque;
94
95 switch (addr & 0x3f) {
96 case 0x00: // Control/Status
97 case 0x10: // AFSR
98 case 0x18: // AFAR
99 case 0x20: // Diagnostic
100 case 0x28: // Target address space
f930d07e 101 // XXX
502a5395 102 default:
f930d07e 103 break;
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104 }
105}
106
107static uint32_t apb_config_readl (void *opaque,
f930d07e 108 target_phys_addr_t addr)
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109{
110 //PCIBus *s = opaque;
111 uint32_t val;
112
113 switch (addr & 0x3f) {
114 case 0x00: // Control/Status
115 case 0x10: // AFSR
116 case 0x18: // AFAR
117 case 0x20: // Diagnostic
118 case 0x28: // Target address space
f930d07e 119 // XXX
502a5395 120 default:
f930d07e
BS
121 val = 0;
122 break;
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123 }
124 return val;
125}
126
127static CPUWriteMemoryFunc *apb_config_write[] = {
128 &apb_config_writel,
129 &apb_config_writel,
130 &apb_config_writel,
131};
132
133static CPUReadMemoryFunc *apb_config_read[] = {
134 &apb_config_readl,
135 &apb_config_readl,
136 &apb_config_readl,
137};
138
139static CPUWriteMemoryFunc *pci_apb_write[] = {
140 &pci_host_data_writeb,
141 &pci_host_data_writew,
142 &pci_host_data_writel,
143};
144
145static CPUReadMemoryFunc *pci_apb_read[] = {
146 &pci_host_data_readb,
147 &pci_host_data_readw,
148 &pci_host_data_readl,
149};
150
151static void pci_apb_iowriteb (void *opaque, target_phys_addr_t addr,
152 uint32_t val)
153{
d56dd6cf 154 cpu_outb(NULL, addr & IOPORTS_MASK, val);
502a5395
PB
155}
156
157static void pci_apb_iowritew (void *opaque, target_phys_addr_t addr,
158 uint32_t val)
159{
d56dd6cf 160 cpu_outw(NULL, addr & IOPORTS_MASK, val);
502a5395
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161}
162
163static void pci_apb_iowritel (void *opaque, target_phys_addr_t addr,
164 uint32_t val)
165{
d56dd6cf 166 cpu_outl(NULL, addr & IOPORTS_MASK, val);
502a5395
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167}
168
169static uint32_t pci_apb_ioreadb (void *opaque, target_phys_addr_t addr)
170{
171 uint32_t val;
172
d56dd6cf 173 val = cpu_inb(NULL, addr & IOPORTS_MASK);
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174 return val;
175}
176
177static uint32_t pci_apb_ioreadw (void *opaque, target_phys_addr_t addr)
178{
179 uint32_t val;
180
d56dd6cf 181 val = cpu_inw(NULL, addr & IOPORTS_MASK);
502a5395
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182 return val;
183}
184
185static uint32_t pci_apb_ioreadl (void *opaque, target_phys_addr_t addr)
186{
187 uint32_t val;
188
d56dd6cf 189 val = cpu_inl(NULL, addr & IOPORTS_MASK);
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190 return val;
191}
192
193static CPUWriteMemoryFunc *pci_apb_iowrite[] = {
194 &pci_apb_iowriteb,
195 &pci_apb_iowritew,
196 &pci_apb_iowritel,
197};
198
199static CPUReadMemoryFunc *pci_apb_ioread[] = {
200 &pci_apb_ioreadb,
201 &pci_apb_ioreadw,
202 &pci_apb_ioreadl,
203};
204
80b3ada7 205/* The APB host has an IRQ line for each IRQ line of each slot. */
d2b59317 206static int pci_apb_map_irq(PCIDevice *pci_dev, int irq_num)
502a5395 207{
80b3ada7
PB
208 return ((pci_dev->devfn & 0x18) >> 1) + irq_num;
209}
210
211static int pci_pbm_map_irq(PCIDevice *pci_dev, int irq_num)
212{
213 int bus_offset;
214 if (pci_dev->devfn & 1)
215 bus_offset = 16;
216 else
217 bus_offset = 0;
218 return bus_offset + irq_num;
d2b59317
PB
219}
220
d537cf6c 221static void pci_apb_set_irq(qemu_irq *pic, int irq_num, int level)
d2b59317 222{
80b3ada7 223 /* PCI IRQ map onto the first 32 INO. */
d537cf6c 224 qemu_set_irq(pic[irq_num], level);
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225}
226
fdf41d22
BS
227PCIBus *pci_apb_init(target_phys_addr_t special_base,
228 target_phys_addr_t mem_base,
c190ea07 229 qemu_irq *pic, PCIBus **bus2, PCIBus **bus3)
502a5395 230{
72f44c8c
BS
231 DeviceState *dev;
232 SysBusDevice *s;
233 APBState *d;
502a5395 234
80b3ada7 235 /* Ultrasparc PBM main bus */
72f44c8c
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236 dev = qdev_create(NULL, "pbm");
237 qdev_init(dev);
238 s = sysbus_from_qdev(dev);
239 /* apb_config */
240 sysbus_mmio_map(s, 0, special_base + 0x2000ULL);
241 /* pci_ioport */
242 sysbus_mmio_map(s, 1, special_base + 0x2000000ULL);
243 /* mem_config: XXX size should be 4G-prom */
244 sysbus_mmio_map(s, 2, special_base + 0x1000000ULL);
245 /* mem_data */
246 sysbus_mmio_map(s, 3, mem_base);
247 d = FROM_SYSBUS(APBState, s);
248 d->host_state.bus = pci_register_bus(NULL, "pci",
249 pci_apb_set_irq, pci_pbm_map_irq, pic,
250 0, 32);
251 pci_create_simple(d->host_state.bus, 0, "pbm");
252 /* APB secondary busses */
253 *bus2 = pci_bridge_init(d->host_state.bus, 8, PCI_VENDOR_ID_SUN,
254 PCI_DEVICE_ID_SUN_SIMBA, pci_apb_map_irq,
255 "Advanced PCI Bus secondary bridge 1");
256 *bus3 = pci_bridge_init(d->host_state.bus, 9, PCI_VENDOR_ID_SUN,
257 PCI_DEVICE_ID_SUN_SIMBA, pci_apb_map_irq,
258 "Advanced PCI Bus secondary bridge 2");
502a5395 259
72f44c8c
BS
260 return d->host_state.bus;
261}
262
263static void pci_pbm_init_device(SysBusDevice *dev)
264{
265
266 APBState *s;
267 int pci_mem_config, pci_mem_data, apb_config, pci_ioport;
268
269 s = FROM_SYSBUS(APBState, dev);
270 /* apb_config */
1eed09cb 271 apb_config = cpu_register_io_memory(apb_config_read,
f930d07e 272 apb_config_write, s);
72f44c8c
BS
273 sysbus_init_mmio(dev, 0x40ULL, apb_config);
274 /* pci_ioport */
1eed09cb 275 pci_ioport = cpu_register_io_memory(pci_apb_ioread,
502a5395 276 pci_apb_iowrite, s);
72f44c8c
BS
277 sysbus_init_mmio(dev, 0x10000ULL, pci_ioport);
278 /* mem_config */
279 pci_mem_config = cpu_register_io_memory(pci_apb_config_read,
280 pci_apb_config_write, s);
281 sysbus_init_mmio(dev, 0x10ULL, pci_mem_config);
282 /* mem_data */
283 pci_mem_data = cpu_register_io_memory(pci_apb_read,
284 pci_apb_write, &s->host_state);
285 sysbus_init_mmio(dev, 0x10000000ULL, pci_mem_data);
286}
502a5395 287
72f44c8c
BS
288static void pbm_pci_host_init(PCIDevice *d)
289{
deb54399
AL
290 pci_config_set_vendor_id(d->config, PCI_VENDOR_ID_SUN);
291 pci_config_set_device_id(d->config, PCI_DEVICE_ID_SUN_SABRE);
502a5395
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292 d->config[0x04] = 0x06; // command = bus master, pci mem
293 d->config[0x05] = 0x00;
294 d->config[0x06] = 0xa0; // status = fast back-to-back, 66MHz, no error
295 d->config[0x07] = 0x03; // status = medium devsel
296 d->config[0x08] = 0x00; // revision
297 d->config[0x09] = 0x00; // programming i/f
173a543b 298 pci_config_set_class(d->config, PCI_CLASS_BRIDGE_HOST);
502a5395 299 d->config[0x0D] = 0x10; // latency_timer
110c50fd 300 d->config[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; // header_type
72f44c8c 301}
80b3ada7 302
72f44c8c
BS
303static PCIDeviceInfo pbm_pci_host_info = {
304 .qdev.name = "pbm",
305 .qdev.size = sizeof(PCIDevice),
306 .init = pbm_pci_host_init,
307};
308
309static void pbm_register_devices(void)
310{
311 sysbus_register_dev("pbm", sizeof(APBState), pci_pbm_init_device);
312 pci_qdev_register(&pbm_pci_host_info);
502a5395 313}
72f44c8c
BS
314
315device_init(pbm_register_devices)