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Commit | Line | Data |
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74c62ba8 AJ |
1 | /* |
2 | * QEMU PowerPC E500 embedded processors pci controller emulation | |
3 | * | |
4 | * Copyright (C) 2009 Freescale Semiconductor, Inc. All rights reserved. | |
5 | * | |
6 | * Author: Yu Liu, <yu.liu@freescale.com> | |
7 | * | |
8 | * This file is derived from hw/ppc4xx_pci.c, | |
9 | * the copyright for that material belongs to the original owners. | |
10 | * | |
11 | * This is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | */ | |
16 | ||
17 | #include "hw.h" | |
74c62ba8 AJ |
18 | #include "pci.h" |
19 | #include "pci_host.h" | |
20 | #include "bswap.h" | |
74c62ba8 AJ |
21 | |
22 | #ifdef DEBUG_PCI | |
001faf32 | 23 | #define pci_debug(fmt, ...) fprintf(stderr, fmt, ## __VA_ARGS__) |
74c62ba8 | 24 | #else |
001faf32 | 25 | #define pci_debug(fmt, ...) |
74c62ba8 AJ |
26 | #endif |
27 | ||
28 | #define PCIE500_CFGADDR 0x0 | |
29 | #define PCIE500_CFGDATA 0x4 | |
30 | #define PCIE500_REG_BASE 0xC00 | |
be13cc7a AG |
31 | #define PCIE500_ALL_SIZE 0x1000 |
32 | #define PCIE500_REG_SIZE (PCIE500_ALL_SIZE - PCIE500_REG_BASE) | |
74c62ba8 AJ |
33 | |
34 | #define PPCE500_PCI_CONFIG_ADDR 0x0 | |
35 | #define PPCE500_PCI_CONFIG_DATA 0x4 | |
36 | #define PPCE500_PCI_INTACK 0x8 | |
37 | ||
38 | #define PPCE500_PCI_OW1 (0xC20 - PCIE500_REG_BASE) | |
39 | #define PPCE500_PCI_OW2 (0xC40 - PCIE500_REG_BASE) | |
40 | #define PPCE500_PCI_OW3 (0xC60 - PCIE500_REG_BASE) | |
41 | #define PPCE500_PCI_OW4 (0xC80 - PCIE500_REG_BASE) | |
42 | #define PPCE500_PCI_IW3 (0xDA0 - PCIE500_REG_BASE) | |
43 | #define PPCE500_PCI_IW2 (0xDC0 - PCIE500_REG_BASE) | |
44 | #define PPCE500_PCI_IW1 (0xDE0 - PCIE500_REG_BASE) | |
45 | ||
46 | #define PPCE500_PCI_GASKET_TIMR (0xE20 - PCIE500_REG_BASE) | |
47 | ||
48 | #define PCI_POTAR 0x0 | |
49 | #define PCI_POTEAR 0x4 | |
50 | #define PCI_POWBAR 0x8 | |
51 | #define PCI_POWAR 0x10 | |
52 | ||
53 | #define PCI_PITAR 0x0 | |
54 | #define PCI_PIWBAR 0x8 | |
55 | #define PCI_PIWBEAR 0xC | |
56 | #define PCI_PIWAR 0x10 | |
57 | ||
58 | #define PPCE500_PCI_NR_POBS 5 | |
59 | #define PPCE500_PCI_NR_PIBS 3 | |
60 | ||
61 | struct pci_outbound { | |
62 | uint32_t potar; | |
63 | uint32_t potear; | |
64 | uint32_t powbar; | |
65 | uint32_t powar; | |
66 | }; | |
67 | ||
68 | struct pci_inbound { | |
69 | uint32_t pitar; | |
70 | uint32_t piwbar; | |
71 | uint32_t piwbear; | |
72 | uint32_t piwar; | |
73 | }; | |
74 | ||
75 | struct PPCE500PCIState { | |
be13cc7a | 76 | PCIHostState pci_state; |
74c62ba8 AJ |
77 | struct pci_outbound pob[PPCE500_PCI_NR_POBS]; |
78 | struct pci_inbound pib[PPCE500_PCI_NR_PIBS]; | |
79 | uint32_t gasket_time; | |
be13cc7a AG |
80 | qemu_irq irq[4]; |
81 | /* mmio maps */ | |
be13cc7a | 82 | int reg; |
74c62ba8 AJ |
83 | }; |
84 | ||
85 | typedef struct PPCE500PCIState PPCE500PCIState; | |
86 | ||
c227f099 | 87 | static uint32_t pci_reg_read4(void *opaque, target_phys_addr_t addr) |
74c62ba8 AJ |
88 | { |
89 | PPCE500PCIState *pci = opaque; | |
90 | unsigned long win; | |
91 | uint32_t value = 0; | |
eeae2e7b | 92 | int idx; |
74c62ba8 AJ |
93 | |
94 | win = addr & 0xfe0; | |
95 | ||
96 | switch (win) { | |
97 | case PPCE500_PCI_OW1: | |
98 | case PPCE500_PCI_OW2: | |
99 | case PPCE500_PCI_OW3: | |
100 | case PPCE500_PCI_OW4: | |
eeae2e7b | 101 | idx = (addr >> 5) & 0x7; |
74c62ba8 | 102 | switch (addr & 0xC) { |
6875dc8e | 103 | case PCI_POTAR: |
eeae2e7b | 104 | value = pci->pob[idx].potar; |
6875dc8e LYB |
105 | break; |
106 | case PCI_POTEAR: | |
eeae2e7b | 107 | value = pci->pob[idx].potear; |
6875dc8e LYB |
108 | break; |
109 | case PCI_POWBAR: | |
eeae2e7b | 110 | value = pci->pob[idx].powbar; |
6875dc8e LYB |
111 | break; |
112 | case PCI_POWAR: | |
eeae2e7b | 113 | value = pci->pob[idx].powar; |
6875dc8e LYB |
114 | break; |
115 | default: | |
116 | break; | |
74c62ba8 AJ |
117 | } |
118 | break; | |
119 | ||
120 | case PPCE500_PCI_IW3: | |
121 | case PPCE500_PCI_IW2: | |
122 | case PPCE500_PCI_IW1: | |
eeae2e7b | 123 | idx = ((addr >> 5) & 0x3) - 1; |
74c62ba8 | 124 | switch (addr & 0xC) { |
6875dc8e | 125 | case PCI_PITAR: |
eeae2e7b | 126 | value = pci->pib[idx].pitar; |
6875dc8e LYB |
127 | break; |
128 | case PCI_PIWBAR: | |
eeae2e7b | 129 | value = pci->pib[idx].piwbar; |
6875dc8e LYB |
130 | break; |
131 | case PCI_PIWBEAR: | |
eeae2e7b | 132 | value = pci->pib[idx].piwbear; |
6875dc8e LYB |
133 | break; |
134 | case PCI_PIWAR: | |
eeae2e7b | 135 | value = pci->pib[idx].piwar; |
6875dc8e LYB |
136 | break; |
137 | default: | |
138 | break; | |
74c62ba8 AJ |
139 | }; |
140 | break; | |
141 | ||
142 | case PPCE500_PCI_GASKET_TIMR: | |
143 | value = pci->gasket_time; | |
144 | break; | |
145 | ||
146 | default: | |
147 | break; | |
148 | } | |
149 | ||
c0a2a096 BS |
150 | pci_debug("%s: win:%lx(addr:" TARGET_FMT_plx ") -> value:%x\n", __func__, |
151 | win, addr, value); | |
74c62ba8 AJ |
152 | return value; |
153 | } | |
154 | ||
d60efc6b | 155 | static CPUReadMemoryFunc * const e500_pci_reg_read[] = { |
74c62ba8 AJ |
156 | &pci_reg_read4, |
157 | &pci_reg_read4, | |
158 | &pci_reg_read4, | |
159 | }; | |
160 | ||
c227f099 | 161 | static void pci_reg_write4(void *opaque, target_phys_addr_t addr, |
74c62ba8 AJ |
162 | uint32_t value) |
163 | { | |
164 | PPCE500PCIState *pci = opaque; | |
165 | unsigned long win; | |
eeae2e7b | 166 | int idx; |
74c62ba8 AJ |
167 | |
168 | win = addr & 0xfe0; | |
169 | ||
c0a2a096 BS |
170 | pci_debug("%s: value:%x -> win:%lx(addr:" TARGET_FMT_plx ")\n", |
171 | __func__, value, win, addr); | |
74c62ba8 AJ |
172 | |
173 | switch (win) { | |
174 | case PPCE500_PCI_OW1: | |
175 | case PPCE500_PCI_OW2: | |
176 | case PPCE500_PCI_OW3: | |
177 | case PPCE500_PCI_OW4: | |
eeae2e7b | 178 | idx = (addr >> 5) & 0x7; |
74c62ba8 | 179 | switch (addr & 0xC) { |
6875dc8e | 180 | case PCI_POTAR: |
eeae2e7b | 181 | pci->pob[idx].potar = value; |
6875dc8e LYB |
182 | break; |
183 | case PCI_POTEAR: | |
eeae2e7b | 184 | pci->pob[idx].potear = value; |
6875dc8e LYB |
185 | break; |
186 | case PCI_POWBAR: | |
eeae2e7b | 187 | pci->pob[idx].powbar = value; |
6875dc8e LYB |
188 | break; |
189 | case PCI_POWAR: | |
eeae2e7b | 190 | pci->pob[idx].powar = value; |
6875dc8e LYB |
191 | break; |
192 | default: | |
193 | break; | |
74c62ba8 AJ |
194 | }; |
195 | break; | |
196 | ||
197 | case PPCE500_PCI_IW3: | |
198 | case PPCE500_PCI_IW2: | |
199 | case PPCE500_PCI_IW1: | |
eeae2e7b | 200 | idx = ((addr >> 5) & 0x3) - 1; |
74c62ba8 | 201 | switch (addr & 0xC) { |
6875dc8e | 202 | case PCI_PITAR: |
eeae2e7b | 203 | pci->pib[idx].pitar = value; |
6875dc8e LYB |
204 | break; |
205 | case PCI_PIWBAR: | |
eeae2e7b | 206 | pci->pib[idx].piwbar = value; |
6875dc8e LYB |
207 | break; |
208 | case PCI_PIWBEAR: | |
eeae2e7b | 209 | pci->pib[idx].piwbear = value; |
6875dc8e LYB |
210 | break; |
211 | case PCI_PIWAR: | |
eeae2e7b | 212 | pci->pib[idx].piwar = value; |
6875dc8e LYB |
213 | break; |
214 | default: | |
215 | break; | |
74c62ba8 AJ |
216 | }; |
217 | break; | |
218 | ||
219 | case PPCE500_PCI_GASKET_TIMR: | |
220 | pci->gasket_time = value; | |
221 | break; | |
222 | ||
223 | default: | |
224 | break; | |
225 | }; | |
226 | } | |
227 | ||
d60efc6b | 228 | static CPUWriteMemoryFunc * const e500_pci_reg_write[] = { |
74c62ba8 AJ |
229 | &pci_reg_write4, |
230 | &pci_reg_write4, | |
231 | &pci_reg_write4, | |
232 | }; | |
233 | ||
234 | static int mpc85xx_pci_map_irq(PCIDevice *pci_dev, int irq_num) | |
235 | { | |
236 | int devno = pci_dev->devfn >> 3, ret = 0; | |
237 | ||
238 | switch (devno) { | |
239 | /* Two PCI slot */ | |
240 | case 0x11: | |
241 | case 0x12: | |
242 | ret = (irq_num + devno - 0x10) % 4; | |
243 | break; | |
244 | default: | |
72b310e9 | 245 | printf("Error:%s:unknown dev number\n", __func__); |
74c62ba8 AJ |
246 | } |
247 | ||
248 | pci_debug("%s: devfn %x irq %d -> %d devno:%x\n", __func__, | |
249 | pci_dev->devfn, irq_num, ret, devno); | |
250 | ||
251 | return ret; | |
252 | } | |
253 | ||
5d4e84c8 | 254 | static void mpc85xx_pci_set_irq(void *opaque, int irq_num, int level) |
74c62ba8 | 255 | { |
5d4e84c8 JQ |
256 | qemu_irq *pic = opaque; |
257 | ||
74c62ba8 AJ |
258 | pci_debug("%s: PCI irq %d, level:%d\n", __func__, irq_num, level); |
259 | ||
260 | qemu_set_irq(pic[irq_num], level); | |
261 | } | |
262 | ||
e0433ecc JQ |
263 | static const VMStateDescription vmstate_pci_outbound = { |
264 | .name = "pci_outbound", | |
265 | .version_id = 0, | |
266 | .minimum_version_id = 0, | |
267 | .minimum_version_id_old = 0, | |
268 | .fields = (VMStateField[]) { | |
269 | VMSTATE_UINT32(potar, struct pci_outbound), | |
270 | VMSTATE_UINT32(potear, struct pci_outbound), | |
271 | VMSTATE_UINT32(powbar, struct pci_outbound), | |
272 | VMSTATE_UINT32(powar, struct pci_outbound), | |
273 | VMSTATE_END_OF_LIST() | |
74c62ba8 | 274 | } |
e0433ecc | 275 | }; |
74c62ba8 | 276 | |
e0433ecc JQ |
277 | static const VMStateDescription vmstate_pci_inbound = { |
278 | .name = "pci_inbound", | |
279 | .version_id = 0, | |
280 | .minimum_version_id = 0, | |
281 | .minimum_version_id_old = 0, | |
282 | .fields = (VMStateField[]) { | |
283 | VMSTATE_UINT32(pitar, struct pci_inbound), | |
284 | VMSTATE_UINT32(piwbar, struct pci_inbound), | |
285 | VMSTATE_UINT32(piwbear, struct pci_inbound), | |
286 | VMSTATE_UINT32(piwar, struct pci_inbound), | |
287 | VMSTATE_END_OF_LIST() | |
74c62ba8 | 288 | } |
e0433ecc | 289 | }; |
74c62ba8 | 290 | |
e0433ecc JQ |
291 | static const VMStateDescription vmstate_ppce500_pci = { |
292 | .name = "ppce500_pci", | |
293 | .version_id = 1, | |
294 | .minimum_version_id = 1, | |
295 | .minimum_version_id_old = 1, | |
296 | .fields = (VMStateField[]) { | |
e0433ecc JQ |
297 | VMSTATE_STRUCT_ARRAY(pob, PPCE500PCIState, PPCE500_PCI_NR_POBS, 1, |
298 | vmstate_pci_outbound, struct pci_outbound), | |
299 | VMSTATE_STRUCT_ARRAY(pib, PPCE500PCIState, PPCE500_PCI_NR_PIBS, 1, | |
300 | vmstate_pci_outbound, struct pci_inbound), | |
301 | VMSTATE_UINT32(gasket_time, PPCE500PCIState), | |
302 | VMSTATE_END_OF_LIST() | |
74c62ba8 | 303 | } |
e0433ecc | 304 | }; |
74c62ba8 | 305 | |
be13cc7a AG |
306 | static void e500_pci_map(SysBusDevice *dev, target_phys_addr_t base) |
307 | { | |
308 | PCIHostState *h = FROM_SYSBUS(PCIHostState, sysbus_from_qdev(dev)); | |
309 | PPCE500PCIState *s = DO_UPCAST(PPCE500PCIState, pci_state, h); | |
310 | ||
d0ed8076 AK |
311 | sysbus_add_memory(dev, base + PCIE500_CFGADDR, &h->conf_mem); |
312 | sysbus_add_memory(dev, base + PCIE500_CFGDATA, &h->data_mem); | |
be13cc7a AG |
313 | cpu_register_physical_memory(base + PCIE500_REG_BASE, PCIE500_REG_SIZE, |
314 | s->reg); | |
315 | } | |
316 | ||
cd0fa1e6 AK |
317 | static void e500_pci_unmap(SysBusDevice *dev, target_phys_addr_t base) |
318 | { | |
d0ed8076 AK |
319 | PCIHostState *h = FROM_SYSBUS(PCIHostState, sysbus_from_qdev(dev)); |
320 | ||
321 | sysbus_del_memory(dev, &h->conf_mem); | |
322 | sysbus_del_memory(dev, &h->data_mem); | |
cd0fa1e6 AK |
323 | cpu_register_physical_memory(base + PCIE500_REG_BASE, PCIE500_REG_SIZE, |
324 | IO_MEM_UNASSIGNED); | |
325 | } | |
326 | ||
1e39101c AK |
327 | #include "exec-memory.h" |
328 | ||
be13cc7a AG |
329 | static int e500_pcihost_initfn(SysBusDevice *dev) |
330 | { | |
331 | PCIHostState *h; | |
332 | PPCE500PCIState *s; | |
333 | PCIBus *b; | |
334 | int i; | |
aee97b84 AK |
335 | MemoryRegion *address_space_mem = get_system_memory(); |
336 | MemoryRegion *address_space_io = get_system_io(); | |
be13cc7a AG |
337 | |
338 | h = FROM_SYSBUS(PCIHostState, sysbus_from_qdev(dev)); | |
339 | s = DO_UPCAST(PPCE500PCIState, pci_state, h); | |
340 | ||
341 | for (i = 0; i < ARRAY_SIZE(s->irq); i++) { | |
342 | sysbus_init_irq(dev, &s->irq[i]); | |
343 | } | |
344 | ||
345 | b = pci_register_bus(&s->pci_state.busdev.qdev, NULL, mpc85xx_pci_set_irq, | |
aee97b84 AK |
346 | mpc85xx_pci_map_irq, s->irq, address_space_mem, |
347 | address_space_io, PCI_DEVFN(0x11, 0), 4); | |
be13cc7a AG |
348 | s->pci_state.bus = b; |
349 | ||
350 | pci_create_simple(b, 0, "e500-host-bridge"); | |
351 | ||
d0ed8076 AK |
352 | memory_region_init_io(&h->conf_mem, &pci_host_conf_be_ops, h, |
353 | "pci-conf-idx", 4); | |
354 | memory_region_init_io(&h->data_mem, &pci_host_data_le_ops, h, | |
355 | "pci-conf-data", 4); | |
be13cc7a AG |
356 | s->reg = cpu_register_io_memory(e500_pci_reg_read, e500_pci_reg_write, s, |
357 | DEVICE_BIG_ENDIAN); | |
cd0fa1e6 | 358 | sysbus_init_mmio_cb2(dev, e500_pci_map, e500_pci_unmap); |
be13cc7a AG |
359 | |
360 | return 0; | |
361 | } | |
362 | ||
be13cc7a AG |
363 | static PCIDeviceInfo e500_host_bridge_info = { |
364 | .qdev.name = "e500-host-bridge", | |
365 | .qdev.desc = "Host bridge", | |
366 | .qdev.size = sizeof(PCIDevice), | |
cdfdec7f MT |
367 | .vendor_id = PCI_VENDOR_ID_FREESCALE, |
368 | .device_id = PCI_DEVICE_ID_MPC8533E, | |
369 | .class_id = PCI_CLASS_PROCESSOR_POWERPC, | |
be13cc7a AG |
370 | }; |
371 | ||
372 | static SysBusDeviceInfo e500_pcihost_info = { | |
373 | .init = e500_pcihost_initfn, | |
374 | .qdev.name = "e500-pcihost", | |
375 | .qdev.size = sizeof(PPCE500PCIState), | |
376 | .qdev.vmsd = &vmstate_ppce500_pci, | |
377 | }; | |
378 | ||
379 | static void e500_pci_register(void) | |
74c62ba8 | 380 | { |
be13cc7a AG |
381 | sysbus_register_withprop(&e500_pcihost_info); |
382 | pci_qdev_register(&e500_host_bridge_info); | |
74c62ba8 | 383 | } |
be13cc7a | 384 | device_init(e500_pci_register); |