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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 | 18 | #include "ppce500.h" |
74c62ba8 AJ |
19 | #include "pci.h" |
20 | #include "pci_host.h" | |
21 | #include "bswap.h" | |
74c62ba8 AJ |
22 | |
23 | #ifdef DEBUG_PCI | |
001faf32 | 24 | #define pci_debug(fmt, ...) fprintf(stderr, fmt, ## __VA_ARGS__) |
74c62ba8 | 25 | #else |
001faf32 | 26 | #define pci_debug(fmt, ...) |
74c62ba8 AJ |
27 | #endif |
28 | ||
29 | #define PCIE500_CFGADDR 0x0 | |
30 | #define PCIE500_CFGDATA 0x4 | |
31 | #define PCIE500_REG_BASE 0xC00 | |
32 | #define PCIE500_REG_SIZE (0x1000 - PCIE500_REG_BASE) | |
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 { | |
76 | struct pci_outbound pob[PPCE500_PCI_NR_POBS]; | |
77 | struct pci_inbound pib[PPCE500_PCI_NR_PIBS]; | |
78 | uint32_t gasket_time; | |
b19159e8 AL |
79 | PCIHostState pci_state; |
80 | PCIDevice *pci_dev; | |
74c62ba8 AJ |
81 | }; |
82 | ||
83 | typedef struct PPCE500PCIState PPCE500PCIState; | |
84 | ||
c227f099 | 85 | static uint32_t pci_reg_read4(void *opaque, target_phys_addr_t addr) |
74c62ba8 AJ |
86 | { |
87 | PPCE500PCIState *pci = opaque; | |
88 | unsigned long win; | |
89 | uint32_t value = 0; | |
90 | ||
91 | win = addr & 0xfe0; | |
92 | ||
93 | switch (win) { | |
94 | case PPCE500_PCI_OW1: | |
95 | case PPCE500_PCI_OW2: | |
96 | case PPCE500_PCI_OW3: | |
97 | case PPCE500_PCI_OW4: | |
98 | switch (addr & 0xC) { | |
99 | case PCI_POTAR: value = pci->pob[(addr >> 5) & 0x7].potar; break; | |
100 | case PCI_POTEAR: value = pci->pob[(addr >> 5) & 0x7].potear; break; | |
101 | case PCI_POWBAR: value = pci->pob[(addr >> 5) & 0x7].powbar; break; | |
102 | case PCI_POWAR: value = pci->pob[(addr >> 5) & 0x7].powar; break; | |
103 | default: break; | |
104 | } | |
105 | break; | |
106 | ||
107 | case PPCE500_PCI_IW3: | |
108 | case PPCE500_PCI_IW2: | |
109 | case PPCE500_PCI_IW1: | |
110 | switch (addr & 0xC) { | |
111 | case PCI_PITAR: value = pci->pib[(addr >> 5) & 0x3].pitar; break; | |
112 | case PCI_PIWBAR: value = pci->pib[(addr >> 5) & 0x3].piwbar; break; | |
113 | case PCI_PIWBEAR: value = pci->pib[(addr >> 5) & 0x3].piwbear; break; | |
114 | case PCI_PIWAR: value = pci->pib[(addr >> 5) & 0x3].piwar; break; | |
115 | default: break; | |
116 | }; | |
117 | break; | |
118 | ||
119 | case PPCE500_PCI_GASKET_TIMR: | |
120 | value = pci->gasket_time; | |
121 | break; | |
122 | ||
123 | default: | |
124 | break; | |
125 | } | |
126 | ||
c0a2a096 BS |
127 | pci_debug("%s: win:%lx(addr:" TARGET_FMT_plx ") -> value:%x\n", __func__, |
128 | win, addr, value); | |
74c62ba8 AJ |
129 | return value; |
130 | } | |
131 | ||
d60efc6b | 132 | static CPUReadMemoryFunc * const e500_pci_reg_read[] = { |
74c62ba8 AJ |
133 | &pci_reg_read4, |
134 | &pci_reg_read4, | |
135 | &pci_reg_read4, | |
136 | }; | |
137 | ||
c227f099 | 138 | static void pci_reg_write4(void *opaque, target_phys_addr_t addr, |
74c62ba8 AJ |
139 | uint32_t value) |
140 | { | |
141 | PPCE500PCIState *pci = opaque; | |
142 | unsigned long win; | |
143 | ||
144 | win = addr & 0xfe0; | |
145 | ||
c0a2a096 BS |
146 | pci_debug("%s: value:%x -> win:%lx(addr:" TARGET_FMT_plx ")\n", |
147 | __func__, value, win, addr); | |
74c62ba8 AJ |
148 | |
149 | switch (win) { | |
150 | case PPCE500_PCI_OW1: | |
151 | case PPCE500_PCI_OW2: | |
152 | case PPCE500_PCI_OW3: | |
153 | case PPCE500_PCI_OW4: | |
154 | switch (addr & 0xC) { | |
155 | case PCI_POTAR: pci->pob[(addr >> 5) & 0x7].potar = value; break; | |
156 | case PCI_POTEAR: pci->pob[(addr >> 5) & 0x7].potear = value; break; | |
157 | case PCI_POWBAR: pci->pob[(addr >> 5) & 0x7].powbar = value; break; | |
158 | case PCI_POWAR: pci->pob[(addr >> 5) & 0x7].powar = value; break; | |
159 | default: break; | |
160 | }; | |
161 | break; | |
162 | ||
163 | case PPCE500_PCI_IW3: | |
164 | case PPCE500_PCI_IW2: | |
165 | case PPCE500_PCI_IW1: | |
166 | switch (addr & 0xC) { | |
167 | case PCI_PITAR: pci->pib[(addr >> 5) & 0x3].pitar = value; break; | |
168 | case PCI_PIWBAR: pci->pib[(addr >> 5) & 0x3].piwbar = value; break; | |
169 | case PCI_PIWBEAR: pci->pib[(addr >> 5) & 0x3].piwbear = value; break; | |
170 | case PCI_PIWAR: pci->pib[(addr >> 5) & 0x3].piwar = value; break; | |
171 | default: break; | |
172 | }; | |
173 | break; | |
174 | ||
175 | case PPCE500_PCI_GASKET_TIMR: | |
176 | pci->gasket_time = value; | |
177 | break; | |
178 | ||
179 | default: | |
180 | break; | |
181 | }; | |
182 | } | |
183 | ||
d60efc6b | 184 | static CPUWriteMemoryFunc * const e500_pci_reg_write[] = { |
74c62ba8 AJ |
185 | &pci_reg_write4, |
186 | &pci_reg_write4, | |
187 | &pci_reg_write4, | |
188 | }; | |
189 | ||
190 | static int mpc85xx_pci_map_irq(PCIDevice *pci_dev, int irq_num) | |
191 | { | |
192 | int devno = pci_dev->devfn >> 3, ret = 0; | |
193 | ||
194 | switch (devno) { | |
195 | /* Two PCI slot */ | |
196 | case 0x11: | |
197 | case 0x12: | |
198 | ret = (irq_num + devno - 0x10) % 4; | |
199 | break; | |
200 | default: | |
72b310e9 | 201 | printf("Error:%s:unknown dev number\n", __func__); |
74c62ba8 AJ |
202 | } |
203 | ||
204 | pci_debug("%s: devfn %x irq %d -> %d devno:%x\n", __func__, | |
205 | pci_dev->devfn, irq_num, ret, devno); | |
206 | ||
207 | return ret; | |
208 | } | |
209 | ||
5d4e84c8 | 210 | static void mpc85xx_pci_set_irq(void *opaque, int irq_num, int level) |
74c62ba8 | 211 | { |
5d4e84c8 JQ |
212 | qemu_irq *pic = opaque; |
213 | ||
74c62ba8 AJ |
214 | pci_debug("%s: PCI irq %d, level:%d\n", __func__, irq_num, level); |
215 | ||
216 | qemu_set_irq(pic[irq_num], level); | |
217 | } | |
218 | ||
e0433ecc JQ |
219 | static const VMStateDescription vmstate_pci_outbound = { |
220 | .name = "pci_outbound", | |
221 | .version_id = 0, | |
222 | .minimum_version_id = 0, | |
223 | .minimum_version_id_old = 0, | |
224 | .fields = (VMStateField[]) { | |
225 | VMSTATE_UINT32(potar, struct pci_outbound), | |
226 | VMSTATE_UINT32(potear, struct pci_outbound), | |
227 | VMSTATE_UINT32(powbar, struct pci_outbound), | |
228 | VMSTATE_UINT32(powar, struct pci_outbound), | |
229 | VMSTATE_END_OF_LIST() | |
74c62ba8 | 230 | } |
e0433ecc | 231 | }; |
74c62ba8 | 232 | |
e0433ecc JQ |
233 | static const VMStateDescription vmstate_pci_inbound = { |
234 | .name = "pci_inbound", | |
235 | .version_id = 0, | |
236 | .minimum_version_id = 0, | |
237 | .minimum_version_id_old = 0, | |
238 | .fields = (VMStateField[]) { | |
239 | VMSTATE_UINT32(pitar, struct pci_inbound), | |
240 | VMSTATE_UINT32(piwbar, struct pci_inbound), | |
241 | VMSTATE_UINT32(piwbear, struct pci_inbound), | |
242 | VMSTATE_UINT32(piwar, struct pci_inbound), | |
243 | VMSTATE_END_OF_LIST() | |
74c62ba8 | 244 | } |
e0433ecc | 245 | }; |
74c62ba8 | 246 | |
e0433ecc JQ |
247 | static const VMStateDescription vmstate_ppce500_pci = { |
248 | .name = "ppce500_pci", | |
249 | .version_id = 1, | |
250 | .minimum_version_id = 1, | |
251 | .minimum_version_id_old = 1, | |
252 | .fields = (VMStateField[]) { | |
253 | VMSTATE_PCI_DEVICE_POINTER(pci_dev, PPCE500PCIState), | |
254 | VMSTATE_STRUCT_ARRAY(pob, PPCE500PCIState, PPCE500_PCI_NR_POBS, 1, | |
255 | vmstate_pci_outbound, struct pci_outbound), | |
256 | VMSTATE_STRUCT_ARRAY(pib, PPCE500PCIState, PPCE500_PCI_NR_PIBS, 1, | |
257 | vmstate_pci_outbound, struct pci_inbound), | |
258 | VMSTATE_UINT32(gasket_time, PPCE500PCIState), | |
259 | VMSTATE_END_OF_LIST() | |
74c62ba8 | 260 | } |
e0433ecc | 261 | }; |
74c62ba8 | 262 | |
c227f099 | 263 | PCIBus *ppce500_pci_init(qemu_irq pci_irqs[4], target_phys_addr_t registers) |
74c62ba8 | 264 | { |
b19159e8 | 265 | PPCE500PCIState *controller; |
74c62ba8 | 266 | PCIDevice *d; |
b19159e8 | 267 | int index; |
74c62ba8 AJ |
268 | static int ppce500_pci_id; |
269 | ||
b19159e8 | 270 | controller = qemu_mallocz(sizeof(PPCE500PCIState)); |
74c62ba8 | 271 | |
b19159e8 AL |
272 | controller->pci_state.bus = pci_register_bus(NULL, "pci", |
273 | mpc85xx_pci_set_irq, | |
274 | mpc85xx_pci_map_irq, | |
275 | pci_irqs, PCI_DEVFN(0x11, 0), | |
276 | 4); | |
277 | d = pci_register_device(controller->pci_state.bus, | |
278 | "host bridge", sizeof(PCIDevice), | |
279 | 0, NULL, NULL); | |
74c62ba8 | 280 | |
b19159e8 AL |
281 | pci_config_set_vendor_id(d->config, PCI_VENDOR_ID_FREESCALE); |
282 | pci_config_set_device_id(d->config, PCI_DEVICE_ID_MPC8533E); | |
283 | pci_config_set_class(d->config, PCI_CLASS_PROCESSOR_POWERPC); | |
74c62ba8 | 284 | |
b19159e8 | 285 | controller->pci_dev = d; |
74c62ba8 AJ |
286 | |
287 | /* CFGADDR */ | |
6ebf5905 AG |
288 | index = pci_host_conf_register_mmio(&controller->pci_state, |
289 | DEVICE_BIG_ENDIAN); | |
74c62ba8 | 290 | if (index < 0) |
b19159e8 | 291 | goto free; |
74c62ba8 AJ |
292 | cpu_register_physical_memory(registers + PCIE500_CFGADDR, 4, index); |
293 | ||
294 | /* CFGDATA */ | |
6ebf5905 AG |
295 | index = pci_host_data_register_mmio(&controller->pci_state, |
296 | DEVICE_BIG_ENDIAN); | |
74c62ba8 | 297 | if (index < 0) |
b19159e8 | 298 | goto free; |
74c62ba8 AJ |
299 | cpu_register_physical_memory(registers + PCIE500_CFGDATA, 4, index); |
300 | ||
1eed09cb | 301 | index = cpu_register_io_memory(e500_pci_reg_read, |
2507c12a AG |
302 | e500_pci_reg_write, controller, |
303 | DEVICE_NATIVE_ENDIAN); | |
74c62ba8 | 304 | if (index < 0) |
b19159e8 | 305 | goto free; |
74c62ba8 AJ |
306 | cpu_register_physical_memory(registers + PCIE500_REG_BASE, |
307 | PCIE500_REG_SIZE, index); | |
13b7fdef | 308 | |
b19159e8 | 309 | /* XXX load/save code not tested. */ |
e0433ecc JQ |
310 | vmstate_register(&d->qdev, ppce500_pci_id++, &vmstate_ppce500_pci, |
311 | controller); | |
74c62ba8 | 312 | |
b19159e8 | 313 | return controller->pci_state.bus; |
74c62ba8 | 314 | |
b19159e8 AL |
315 | free: |
316 | printf("%s error\n", __func__); | |
317 | qemu_free(controller); | |
318 | return NULL; | |
74c62ba8 | 319 | } |