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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 } UNINState;
45
46 static int pci_unin_map_irq(PCIDevice *pci_dev, int irq_num)
47 {
48     int retval;
49     int devfn = pci_dev->devfn & 0x00FFFFFF;
50
51     retval = (((devfn >> 11) & 0x1F) + irq_num) & 3;
52
53     return retval;
54 }
55
56 static void pci_unin_set_irq(void *opaque, int irq_num, int level)
57 {
58     qemu_irq *pic = opaque;
59
60     UNIN_DPRINTF("%s: setting INT %d = %d\n", __func__,
61                  unin_irq_line[irq_num], level);
62     qemu_set_irq(pic[unin_irq_line[irq_num]], level);
63 }
64
65 static void pci_unin_reset(void *opaque)
66 {
67 }
68
69 static uint32_t unin_get_config_reg(uint32_t reg, uint32_t addr)
70 {
71     uint32_t retval;
72
73     if (reg & (1u << 31)) {
74         /* XXX OpenBIOS compatibility hack */
75         retval = reg | (addr & 3);
76     } else if (reg & 1) {
77         /* CFA1 style */
78         retval = (reg & ~7u) | (addr & 7);
79     } else {
80         uint32_t slot, func;
81
82         /* Grab CFA0 style values */
83         slot = ffs(reg & 0xfffff800) - 1;
84         func = (reg >> 8) & 7;
85
86         /* ... and then convert them to x86 format */
87         /* config pointer */
88         retval = (reg & (0xff - 7)) | (addr & 7);
89         /* slot */
90         retval |= slot << 11;
91         /* fn */
92         retval |= func << 8;
93     }
94
95
96     UNIN_DPRINTF("Converted config space accessor %08x/%08x -> %08x\n",
97                  reg, addr, retval);
98
99     return retval;
100 }
101
102 static void unin_data_write(void *opaque, target_phys_addr_t addr,
103                             uint64_t val, unsigned len)
104 {
105     UNINState *s = opaque;
106     UNIN_DPRINTF("write addr %" TARGET_FMT_plx " len %d val %"PRIx64"\n",
107                  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 uint64_t unin_data_read(void *opaque, target_phys_addr_t addr,
114                                unsigned len)
115 {
116     UNINState *s = opaque;
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 %" TARGET_FMT_plx " len %d val %x\n",
123                  addr, len, val);
124     return val;
125 }
126
127 static const MemoryRegionOps unin_data_ops = {
128     .read = unin_data_read,
129     .write = unin_data_write,
130     .endianness = DEVICE_LITTLE_ENDIAN,
131 };
132
133 static int pci_unin_main_init_device(SysBusDevice *dev)
134 {
135     UNINState *s;
136
137     /* Use values found on a real PowerMac */
138     /* Uninorth main bus */
139     s = FROM_SYSBUS(UNINState, dev);
140
141     memory_region_init_io(&s->host_state.conf_mem, &pci_host_conf_le_ops,
142                           &s->host_state, "pci-conf-idx", 0x1000);
143     memory_region_init_io(&s->host_state.data_mem, &unin_data_ops, s,
144                           "pci-conf-data", 0x1000);
145     sysbus_init_mmio_region(dev, &s->host_state.conf_mem);
146     sysbus_init_mmio_region(dev, &s->host_state.data_mem);
147
148     qemu_register_reset(pci_unin_reset, &s->host_state);
149     return 0;
150 }
151
152
153 static int pci_u3_agp_init_device(SysBusDevice *dev)
154 {
155     UNINState *s;
156
157     /* Uninorth U3 AGP bus */
158     s = FROM_SYSBUS(UNINState, dev);
159
160     memory_region_init_io(&s->host_state.conf_mem, &pci_host_conf_le_ops,
161                           &s->host_state, "pci-conf-idx", 0x1000);
162     memory_region_init_io(&s->host_state.data_mem, &unin_data_ops, s,
163                           "pci-conf-data", 0x1000);
164     sysbus_init_mmio_region(dev, &s->host_state.conf_mem);
165     sysbus_init_mmio_region(dev, &s->host_state.data_mem);
166
167     qemu_register_reset(pci_unin_reset, &s->host_state);
168
169     return 0;
170 }
171
172 static int pci_unin_agp_init_device(SysBusDevice *dev)
173 {
174     UNINState *s;
175
176     /* Uninorth AGP bus */
177     s = FROM_SYSBUS(UNINState, dev);
178
179     memory_region_init_io(&s->host_state.conf_mem, &pci_host_conf_le_ops,
180                           &s->host_state, "pci-conf-idx", 0x1000);
181     memory_region_init_io(&s->host_state.data_mem, &pci_host_data_le_ops,
182                           &s->host_state, "pci-conf-data", 0x1000);
183     sysbus_init_mmio_region(dev, &s->host_state.conf_mem);
184     sysbus_init_mmio_region(dev, &s->host_state.data_mem);
185     return 0;
186 }
187
188 static int pci_unin_internal_init_device(SysBusDevice *dev)
189 {
190     UNINState *s;
191
192     /* Uninorth internal bus */
193     s = FROM_SYSBUS(UNINState, dev);
194
195     memory_region_init_io(&s->host_state.conf_mem, &pci_host_conf_le_ops,
196                           &s->host_state, "pci-conf-idx", 0x1000);
197     memory_region_init_io(&s->host_state.data_mem, &pci_host_data_le_ops,
198                           &s->host_state, "pci-conf-data", 0x1000);
199     sysbus_init_mmio_region(dev, &s->host_state.conf_mem);
200     sysbus_init_mmio_region(dev, &s->host_state.data_mem);
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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