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1 /*
2  * QEMU Uninorth PCI host (for all Mac99 and newer machines)
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 #include "hw.h"
25 #include "ppc_mac.h"
26 #include "pci.h"
27 #include "pci_host.h"
28
29 /* debug UniNorth */
30 //#define DEBUG_UNIN
31
32 #ifdef DEBUG_UNIN
33 #define UNIN_DPRINTF(fmt, ...)                                  \
34     do { printf("UNIN: " fmt , ## __VA_ARGS__); } while (0)
35 #else
36 #define UNIN_DPRINTF(fmt, ...)
37 #endif
38
39 static const int unin_irq_line[] = { 0x1b, 0x1c, 0x1d, 0x1e };
40
41 typedef struct UNINState {
42     SysBusDevice busdev;
43     PCIHostState host_state;
44     ReadWriteHandler data_handler;
45 } UNINState;
46
47 static int pci_unin_map_irq(PCIDevice *pci_dev, int irq_num)
48 {
49     int retval;
50     int devfn = pci_dev->devfn & 0x00FFFFFF;
51
52     retval = (((devfn >> 11) & 0x1F) + irq_num) & 3;
53
54     return retval;
55 }
56
57 static void pci_unin_set_irq(void *opaque, int irq_num, int level)
58 {
59     qemu_irq *pic = opaque;
60
61     UNIN_DPRINTF("%s: setting INT %d = %d\n", __func__,
62                  unin_irq_line[irq_num], level);
63     qemu_set_irq(pic[unin_irq_line[irq_num]], level);
64 }
65
66 static void pci_unin_reset(void *opaque)
67 {
68 }
69
70 static uint32_t unin_get_config_reg(uint32_t reg, uint32_t addr)
71 {
72     uint32_t retval;
73
74     if (reg & (1u << 31)) {
75         /* XXX OpenBIOS compatibility hack */
76         retval = reg | (addr & 3);
77     } else if (reg & 1) {
78         /* CFA1 style */
79         retval = (reg & ~7u) | (addr & 7);
80     } else {
81         uint32_t slot, func;
82
83         /* Grab CFA0 style values */
84         slot = ffs(reg & 0xfffff800) - 1;
85         func = (reg >> 8) & 7;
86
87         /* ... and then convert them to x86 format */
88         /* config pointer */
89         retval = (reg & (0xff - 7)) | (addr & 7);
90         /* slot */
91         retval |= slot << 11;
92         /* fn */
93         retval |= func << 8;
94     }
95
96
97     UNIN_DPRINTF("Converted config space accessor %08x/%08x -> %08x\n",
98                  reg, addr, retval);
99
100     return retval;
101 }
102
103 static void unin_data_write(ReadWriteHandler *handler,
104                             pcibus_t addr, uint32_t val, int len)
105 {
106     UNINState *s = container_of(handler, UNINState, data_handler);
107     UNIN_DPRINTF("write addr %" FMT_PCIBUS " len %d val %x\n", addr, len, val);
108     pci_data_write(s->host_state.bus,
109                    unin_get_config_reg(s->host_state.config_reg, addr),
110                    val, len);
111 }
112
113 static uint32_t unin_data_read(ReadWriteHandler *handler,
114                                pcibus_t addr, int len)
115 {
116     UNINState *s = container_of(handler, UNINState, data_handler);
117     uint32_t val;
118
119     val = pci_data_read(s->host_state.bus,
120                         unin_get_config_reg(s->host_state.config_reg, addr),
121                         len);
122     UNIN_DPRINTF("read addr %" FMT_PCIBUS " len %d val %x\n", addr, len, val);
123     return val;
124 }
125
126 static int pci_unin_main_init_device(SysBusDevice *dev)
127 {
128     UNINState *s;
129     int pci_mem_config, pci_mem_data;
130
131     /* Use values found on a real PowerMac */
132     /* Uninorth main bus */
133     s = FROM_SYSBUS(UNINState, dev);
134
135     pci_mem_config = pci_host_conf_register_mmio(&s->host_state,
136                                                  DEVICE_LITTLE_ENDIAN);
137     s->data_handler.read = unin_data_read;
138     s->data_handler.write = unin_data_write;
139     pci_mem_data = cpu_register_io_memory_simple(&s->data_handler,
140                                                  DEVICE_LITTLE_ENDIAN);
141     sysbus_init_mmio(dev, 0x1000, pci_mem_config);
142     sysbus_init_mmio(dev, 0x1000, pci_mem_data);
143
144     qemu_register_reset(pci_unin_reset, &s->host_state);
145     return 0;
146 }
147
148 static int pci_u3_agp_init_device(SysBusDevice *dev)
149 {
150     UNINState *s;
151     int pci_mem_config, pci_mem_data;
152
153     /* Uninorth U3 AGP bus */
154     s = FROM_SYSBUS(UNINState, dev);
155
156     pci_mem_config = pci_host_conf_register_mmio(&s->host_state,
157                                                  DEVICE_LITTLE_ENDIAN);
158     s->data_handler.read = unin_data_read;
159     s->data_handler.write = unin_data_write;
160     pci_mem_data = cpu_register_io_memory_simple(&s->data_handler,
161                                                  DEVICE_LITTLE_ENDIAN);
162     sysbus_init_mmio(dev, 0x1000, pci_mem_config);
163     sysbus_init_mmio(dev, 0x1000, pci_mem_data);
164
165     qemu_register_reset(pci_unin_reset, &s->host_state);
166
167     return 0;
168 }
169
170 static int pci_unin_agp_init_device(SysBusDevice *dev)
171 {
172     UNINState *s;
173     int pci_mem_config, pci_mem_data;
174
175     /* Uninorth AGP bus */
176     s = FROM_SYSBUS(UNINState, dev);
177
178     pci_mem_config = pci_host_conf_register_mmio(&s->host_state,
179                                                  DEVICE_LITTLE_ENDIAN);
180     pci_mem_data = pci_host_data_register_mmio(&s->host_state,
181                                                DEVICE_LITTLE_ENDIAN);
182     sysbus_init_mmio(dev, 0x1000, pci_mem_config);
183     sysbus_init_mmio(dev, 0x1000, pci_mem_data);
184     return 0;
185 }
186
187 static int pci_unin_internal_init_device(SysBusDevice *dev)
188 {
189     UNINState *s;
190     int pci_mem_config, pci_mem_data;
191
192     /* Uninorth internal bus */
193     s = FROM_SYSBUS(UNINState, dev);
194
195     pci_mem_config = pci_host_conf_register_mmio(&s->host_state,
196                                                  DEVICE_LITTLE_ENDIAN);
197     pci_mem_data = pci_host_data_register_mmio(&s->host_state,
198                                                DEVICE_LITTLE_ENDIAN);
199     sysbus_init_mmio(dev, 0x1000, pci_mem_config);
200     sysbus_init_mmio(dev, 0x1000, pci_mem_data);
201     return 0;
202 }
203
204 PCIBus *pci_pmac_init(qemu_irq *pic,
205                       MemoryRegion *address_space_mem,
206                       MemoryRegion *address_space_io)
207 {
208     DeviceState *dev;
209     SysBusDevice *s;
210     UNINState *d;
211
212     /* Use values found on a real PowerMac */
213     /* Uninorth main bus */
214     dev = qdev_create(NULL, "uni-north");
215     qdev_init_nofail(dev);
216     s = sysbus_from_qdev(dev);
217     d = FROM_SYSBUS(UNINState, s);
218     d->host_state.bus = pci_register_bus(&d->busdev.qdev, "pci",
219                                          pci_unin_set_irq, pci_unin_map_irq,
220                                          pic,
221                                          address_space_mem,
222                                          address_space_io,
223                                          PCI_DEVFN(11, 0), 4);
224
225 #if 0
226     pci_create_simple(d->host_state.bus, PCI_DEVFN(11, 0), "uni-north");
227 #endif
228
229     sysbus_mmio_map(s, 0, 0xf2800000);
230     sysbus_mmio_map(s, 1, 0xf2c00000);
231
232     /* DEC 21154 bridge */
233 #if 0
234     /* XXX: not activated as PPC BIOS doesn't handle multiple buses properly */
235     pci_create_simple(d->host_state.bus, PCI_DEVFN(12, 0), "dec-21154");
236 #endif
237
238     /* Uninorth AGP bus */
239     pci_create_simple(d->host_state.bus, PCI_DEVFN(11, 0), "uni-north-agp");
240     dev = qdev_create(NULL, "uni-north-agp");
241     qdev_init_nofail(dev);
242     s = sysbus_from_qdev(dev);
243     sysbus_mmio_map(s, 0, 0xf0800000);
244     sysbus_mmio_map(s, 1, 0xf0c00000);
245
246     /* Uninorth internal bus */
247 #if 0
248     /* XXX: not needed for now */
249     pci_create_simple(d->host_state.bus, PCI_DEVFN(14, 0), "uni-north-pci");
250     dev = qdev_create(NULL, "uni-north-pci");
251     qdev_init_nofail(dev);
252     s = sysbus_from_qdev(dev);
253     sysbus_mmio_map(s, 0, 0xf4800000);
254     sysbus_mmio_map(s, 1, 0xf4c00000);
255 #endif
256
257     return d->host_state.bus;
258 }
259
260 PCIBus *pci_pmac_u3_init(qemu_irq *pic,
261                          MemoryRegion *address_space_mem,
262                          MemoryRegion *address_space_io)
263 {
264     DeviceState *dev;
265     SysBusDevice *s;
266     UNINState *d;
267
268     /* Uninorth AGP bus */
269
270     dev = qdev_create(NULL, "u3-agp");
271     qdev_init_nofail(dev);
272     s = sysbus_from_qdev(dev);
273     d = FROM_SYSBUS(UNINState, s);
274
275     d->host_state.bus = pci_register_bus(&d->busdev.qdev, "pci",
276                                          pci_unin_set_irq, pci_unin_map_irq,
277                                          pic,
278                                          address_space_mem,
279                                          address_space_io,
280                                          PCI_DEVFN(11, 0), 4);
281
282     sysbus_mmio_map(s, 0, 0xf0800000);
283     sysbus_mmio_map(s, 1, 0xf0c00000);
284
285     pci_create_simple(d->host_state.bus, 11 << 3, "u3-agp");
286
287     return d->host_state.bus;
288 }
289
290 static int unin_main_pci_host_init(PCIDevice *d)
291 {
292     d->config[0x0C] = 0x08; // cache_line_size
293     d->config[0x0D] = 0x10; // latency_timer
294     d->config[0x34] = 0x00; // capabilities_pointer
295     return 0;
296 }
297
298 static int unin_agp_pci_host_init(PCIDevice *d)
299 {
300     d->config[0x0C] = 0x08; // cache_line_size
301     d->config[0x0D] = 0x10; // latency_timer
302     //    d->config[0x34] = 0x80; // capabilities_pointer
303     return 0;
304 }
305
306 static int u3_agp_pci_host_init(PCIDevice *d)
307 {
308     /* cache line size */
309     d->config[0x0C] = 0x08;
310     /* latency timer */
311     d->config[0x0D] = 0x10;
312     return 0;
313 }
314
315 static int unin_internal_pci_host_init(PCIDevice *d)
316 {
317     d->config[0x0C] = 0x08; // cache_line_size
318     d->config[0x0D] = 0x10; // latency_timer
319     d->config[0x34] = 0x00; // capabilities_pointer
320     return 0;
321 }
322
323 static PCIDeviceInfo unin_main_pci_host_info = {
324     .qdev.name = "uni-north",
325     .qdev.size = sizeof(PCIDevice),
326     .init      = unin_main_pci_host_init,
327     .vendor_id = PCI_VENDOR_ID_APPLE,
328     .device_id = PCI_DEVICE_ID_APPLE_UNI_N_PCI,
329     .revision  = 0x00,
330     .class_id  = PCI_CLASS_BRIDGE_HOST,
331 };
332
333 static PCIDeviceInfo u3_agp_pci_host_info = {
334     .qdev.name = "u3-agp",
335     .qdev.size = sizeof(PCIDevice),
336     .init      = u3_agp_pci_host_init,
337     .vendor_id = PCI_VENDOR_ID_APPLE,
338     .device_id = PCI_DEVICE_ID_APPLE_U3_AGP,
339     .revision  = 0x00,
340     .class_id  = PCI_CLASS_BRIDGE_HOST,
341 };
342
343 static PCIDeviceInfo unin_agp_pci_host_info = {
344     .qdev.name = "uni-north-agp",
345     .qdev.size = sizeof(PCIDevice),
346     .init      = unin_agp_pci_host_init,
347     .vendor_id = PCI_VENDOR_ID_APPLE,
348     .device_id = PCI_DEVICE_ID_APPLE_UNI_N_AGP,
349     .revision  = 0x00,
350     .class_id  = PCI_CLASS_BRIDGE_HOST,
351 };
352
353 static PCIDeviceInfo unin_internal_pci_host_info = {
354     .qdev.name = "uni-north-pci",
355     .qdev.size = sizeof(PCIDevice),
356     .init      = unin_internal_pci_host_init,
357     .vendor_id = PCI_VENDOR_ID_APPLE,
358     .device_id = PCI_DEVICE_ID_APPLE_UNI_N_I_PCI,
359     .revision  = 0x00,
360     .class_id  = PCI_CLASS_BRIDGE_HOST,
361 };
362
363 static void unin_register_devices(void)
364 {
365     sysbus_register_dev("uni-north", sizeof(UNINState),
366                         pci_unin_main_init_device);
367     pci_qdev_register(&unin_main_pci_host_info);
368     sysbus_register_dev("u3-agp", sizeof(UNINState),
369                         pci_u3_agp_init_device);
370     pci_qdev_register(&u3_agp_pci_host_info);
371     sysbus_register_dev("uni-north-agp", sizeof(UNINState),
372                         pci_unin_agp_init_device);
373     pci_qdev_register(&unin_agp_pci_host_info);
374     sysbus_register_dev("uni-north-pci", sizeof(UNINState),
375                         pci_unin_internal_init_device);
376     pci_qdev_register(&unin_internal_pci_host_info);
377 }
378
379 device_init(unin_register_devices)
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