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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, <[email protected]> | |
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; | |
92 | ||
93 | win = addr & 0xfe0; | |
94 | ||
95 | switch (win) { | |
96 | case PPCE500_PCI_OW1: | |
97 | case PPCE500_PCI_OW2: | |
98 | case PPCE500_PCI_OW3: | |
99 | case PPCE500_PCI_OW4: | |
100 | switch (addr & 0xC) { | |
101 | case PCI_POTAR: value = pci->pob[(addr >> 5) & 0x7].potar; break; | |
102 | case PCI_POTEAR: value = pci->pob[(addr >> 5) & 0x7].potear; break; | |
103 | case PCI_POWBAR: value = pci->pob[(addr >> 5) & 0x7].powbar; break; | |
104 | case PCI_POWAR: value = pci->pob[(addr >> 5) & 0x7].powar; break; | |
105 | default: break; | |
106 | } | |
107 | break; | |
108 | ||
109 | case PPCE500_PCI_IW3: | |
110 | case PPCE500_PCI_IW2: | |
111 | case PPCE500_PCI_IW1: | |
112 | switch (addr & 0xC) { | |
113 | case PCI_PITAR: value = pci->pib[(addr >> 5) & 0x3].pitar; break; | |
114 | case PCI_PIWBAR: value = pci->pib[(addr >> 5) & 0x3].piwbar; break; | |
115 | case PCI_PIWBEAR: value = pci->pib[(addr >> 5) & 0x3].piwbear; break; | |
116 | case PCI_PIWAR: value = pci->pib[(addr >> 5) & 0x3].piwar; break; | |
117 | default: break; | |
118 | }; | |
119 | break; | |
120 | ||
121 | case PPCE500_PCI_GASKET_TIMR: | |
122 | value = pci->gasket_time; | |
123 | break; | |
124 | ||
125 | default: | |
126 | break; | |
127 | } | |
128 | ||
c0a2a096 BS |
129 | pci_debug("%s: win:%lx(addr:" TARGET_FMT_plx ") -> value:%x\n", __func__, |
130 | win, addr, value); | |
74c62ba8 AJ |
131 | return value; |
132 | } | |
133 | ||
d60efc6b | 134 | static CPUReadMemoryFunc * const e500_pci_reg_read[] = { |
74c62ba8 AJ |
135 | &pci_reg_read4, |
136 | &pci_reg_read4, | |
137 | &pci_reg_read4, | |
138 | }; | |
139 | ||
c227f099 | 140 | static void pci_reg_write4(void *opaque, target_phys_addr_t addr, |
74c62ba8 AJ |
141 | uint32_t value) |
142 | { | |
143 | PPCE500PCIState *pci = opaque; | |
144 | unsigned long win; | |
145 | ||
146 | win = addr & 0xfe0; | |
147 | ||
c0a2a096 BS |
148 | pci_debug("%s: value:%x -> win:%lx(addr:" TARGET_FMT_plx ")\n", |
149 | __func__, value, win, addr); | |
74c62ba8 AJ |
150 | |
151 | switch (win) { | |
152 | case PPCE500_PCI_OW1: | |
153 | case PPCE500_PCI_OW2: | |
154 | case PPCE500_PCI_OW3: | |
155 | case PPCE500_PCI_OW4: | |
156 | switch (addr & 0xC) { | |
157 | case PCI_POTAR: pci->pob[(addr >> 5) & 0x7].potar = value; break; | |
158 | case PCI_POTEAR: pci->pob[(addr >> 5) & 0x7].potear = value; break; | |
159 | case PCI_POWBAR: pci->pob[(addr >> 5) & 0x7].powbar = value; break; | |
160 | case PCI_POWAR: pci->pob[(addr >> 5) & 0x7].powar = value; break; | |
161 | default: break; | |
162 | }; | |
163 | break; | |
164 | ||
165 | case PPCE500_PCI_IW3: | |
166 | case PPCE500_PCI_IW2: | |
167 | case PPCE500_PCI_IW1: | |
168 | switch (addr & 0xC) { | |
169 | case PCI_PITAR: pci->pib[(addr >> 5) & 0x3].pitar = value; break; | |
170 | case PCI_PIWBAR: pci->pib[(addr >> 5) & 0x3].piwbar = value; break; | |
171 | case PCI_PIWBEAR: pci->pib[(addr >> 5) & 0x3].piwbear = value; break; | |
172 | case PCI_PIWAR: pci->pib[(addr >> 5) & 0x3].piwar = value; break; | |
173 | default: break; | |
174 | }; | |
175 | break; | |
176 | ||
177 | case PPCE500_PCI_GASKET_TIMR: | |
178 | pci->gasket_time = value; | |
179 | break; | |
180 | ||
181 | default: | |
182 | break; | |
183 | }; | |
184 | } | |
185 | ||
d60efc6b | 186 | static CPUWriteMemoryFunc * const e500_pci_reg_write[] = { |
74c62ba8 AJ |
187 | &pci_reg_write4, |
188 | &pci_reg_write4, | |
189 | &pci_reg_write4, | |
190 | }; | |
191 | ||
192 | static int mpc85xx_pci_map_irq(PCIDevice *pci_dev, int irq_num) | |
193 | { | |
194 | int devno = pci_dev->devfn >> 3, ret = 0; | |
195 | ||
196 | switch (devno) { | |
197 | /* Two PCI slot */ | |
198 | case 0x11: | |
199 | case 0x12: | |
200 | ret = (irq_num + devno - 0x10) % 4; | |
201 | break; | |
202 | default: | |
72b310e9 | 203 | printf("Error:%s:unknown dev number\n", __func__); |
74c62ba8 AJ |
204 | } |
205 | ||
206 | pci_debug("%s: devfn %x irq %d -> %d devno:%x\n", __func__, | |
207 | pci_dev->devfn, irq_num, ret, devno); | |
208 | ||
209 | return ret; | |
210 | } | |
211 | ||
5d4e84c8 | 212 | static void mpc85xx_pci_set_irq(void *opaque, int irq_num, int level) |
74c62ba8 | 213 | { |
5d4e84c8 JQ |
214 | qemu_irq *pic = opaque; |
215 | ||
74c62ba8 AJ |
216 | pci_debug("%s: PCI irq %d, level:%d\n", __func__, irq_num, level); |
217 | ||
218 | qemu_set_irq(pic[irq_num], level); | |
219 | } | |
220 | ||
e0433ecc JQ |
221 | static const VMStateDescription vmstate_pci_outbound = { |
222 | .name = "pci_outbound", | |
223 | .version_id = 0, | |
224 | .minimum_version_id = 0, | |
225 | .minimum_version_id_old = 0, | |
226 | .fields = (VMStateField[]) { | |
227 | VMSTATE_UINT32(potar, struct pci_outbound), | |
228 | VMSTATE_UINT32(potear, struct pci_outbound), | |
229 | VMSTATE_UINT32(powbar, struct pci_outbound), | |
230 | VMSTATE_UINT32(powar, struct pci_outbound), | |
231 | VMSTATE_END_OF_LIST() | |
74c62ba8 | 232 | } |
e0433ecc | 233 | }; |
74c62ba8 | 234 | |
e0433ecc JQ |
235 | static const VMStateDescription vmstate_pci_inbound = { |
236 | .name = "pci_inbound", | |
237 | .version_id = 0, | |
238 | .minimum_version_id = 0, | |
239 | .minimum_version_id_old = 0, | |
240 | .fields = (VMStateField[]) { | |
241 | VMSTATE_UINT32(pitar, struct pci_inbound), | |
242 | VMSTATE_UINT32(piwbar, struct pci_inbound), | |
243 | VMSTATE_UINT32(piwbear, struct pci_inbound), | |
244 | VMSTATE_UINT32(piwar, struct pci_inbound), | |
245 | VMSTATE_END_OF_LIST() | |
74c62ba8 | 246 | } |
e0433ecc | 247 | }; |
74c62ba8 | 248 | |
e0433ecc JQ |
249 | static const VMStateDescription vmstate_ppce500_pci = { |
250 | .name = "ppce500_pci", | |
251 | .version_id = 1, | |
252 | .minimum_version_id = 1, | |
253 | .minimum_version_id_old = 1, | |
254 | .fields = (VMStateField[]) { | |
e0433ecc JQ |
255 | VMSTATE_STRUCT_ARRAY(pob, PPCE500PCIState, PPCE500_PCI_NR_POBS, 1, |
256 | vmstate_pci_outbound, struct pci_outbound), | |
257 | VMSTATE_STRUCT_ARRAY(pib, PPCE500PCIState, PPCE500_PCI_NR_PIBS, 1, | |
258 | vmstate_pci_outbound, struct pci_inbound), | |
259 | VMSTATE_UINT32(gasket_time, PPCE500PCIState), | |
260 | VMSTATE_END_OF_LIST() | |
74c62ba8 | 261 | } |
e0433ecc | 262 | }; |
74c62ba8 | 263 | |
be13cc7a AG |
264 | static void e500_pci_map(SysBusDevice *dev, target_phys_addr_t base) |
265 | { | |
266 | PCIHostState *h = FROM_SYSBUS(PCIHostState, sysbus_from_qdev(dev)); | |
267 | PPCE500PCIState *s = DO_UPCAST(PPCE500PCIState, pci_state, h); | |
268 | ||
d0ed8076 AK |
269 | sysbus_add_memory(dev, base + PCIE500_CFGADDR, &h->conf_mem); |
270 | sysbus_add_memory(dev, base + PCIE500_CFGDATA, &h->data_mem); | |
be13cc7a AG |
271 | cpu_register_physical_memory(base + PCIE500_REG_BASE, PCIE500_REG_SIZE, |
272 | s->reg); | |
273 | } | |
274 | ||
cd0fa1e6 AK |
275 | static void e500_pci_unmap(SysBusDevice *dev, target_phys_addr_t base) |
276 | { | |
d0ed8076 AK |
277 | PCIHostState *h = FROM_SYSBUS(PCIHostState, sysbus_from_qdev(dev)); |
278 | ||
279 | sysbus_del_memory(dev, &h->conf_mem); | |
280 | sysbus_del_memory(dev, &h->data_mem); | |
cd0fa1e6 AK |
281 | cpu_register_physical_memory(base + PCIE500_REG_BASE, PCIE500_REG_SIZE, |
282 | IO_MEM_UNASSIGNED); | |
283 | } | |
284 | ||
1e39101c AK |
285 | #include "exec-memory.h" |
286 | ||
be13cc7a AG |
287 | static int e500_pcihost_initfn(SysBusDevice *dev) |
288 | { | |
289 | PCIHostState *h; | |
290 | PPCE500PCIState *s; | |
291 | PCIBus *b; | |
292 | int i; | |
aee97b84 AK |
293 | MemoryRegion *address_space_mem = get_system_memory(); |
294 | MemoryRegion *address_space_io = get_system_io(); | |
be13cc7a AG |
295 | |
296 | h = FROM_SYSBUS(PCIHostState, sysbus_from_qdev(dev)); | |
297 | s = DO_UPCAST(PPCE500PCIState, pci_state, h); | |
298 | ||
299 | for (i = 0; i < ARRAY_SIZE(s->irq); i++) { | |
300 | sysbus_init_irq(dev, &s->irq[i]); | |
301 | } | |
302 | ||
303 | b = pci_register_bus(&s->pci_state.busdev.qdev, NULL, mpc85xx_pci_set_irq, | |
aee97b84 AK |
304 | mpc85xx_pci_map_irq, s->irq, address_space_mem, |
305 | address_space_io, PCI_DEVFN(0x11, 0), 4); | |
be13cc7a AG |
306 | s->pci_state.bus = b; |
307 | ||
308 | pci_create_simple(b, 0, "e500-host-bridge"); | |
309 | ||
d0ed8076 AK |
310 | memory_region_init_io(&h->conf_mem, &pci_host_conf_be_ops, h, |
311 | "pci-conf-idx", 4); | |
312 | memory_region_init_io(&h->data_mem, &pci_host_data_le_ops, h, | |
313 | "pci-conf-data", 4); | |
be13cc7a AG |
314 | s->reg = cpu_register_io_memory(e500_pci_reg_read, e500_pci_reg_write, s, |
315 | DEVICE_BIG_ENDIAN); | |
cd0fa1e6 | 316 | sysbus_init_mmio_cb2(dev, e500_pci_map, e500_pci_unmap); |
be13cc7a AG |
317 | |
318 | return 0; | |
319 | } | |
320 | ||
be13cc7a AG |
321 | static PCIDeviceInfo e500_host_bridge_info = { |
322 | .qdev.name = "e500-host-bridge", | |
323 | .qdev.desc = "Host bridge", | |
324 | .qdev.size = sizeof(PCIDevice), | |
cdfdec7f MT |
325 | .vendor_id = PCI_VENDOR_ID_FREESCALE, |
326 | .device_id = PCI_DEVICE_ID_MPC8533E, | |
327 | .class_id = PCI_CLASS_PROCESSOR_POWERPC, | |
be13cc7a AG |
328 | }; |
329 | ||
330 | static SysBusDeviceInfo e500_pcihost_info = { | |
331 | .init = e500_pcihost_initfn, | |
332 | .qdev.name = "e500-pcihost", | |
333 | .qdev.size = sizeof(PPCE500PCIState), | |
334 | .qdev.vmsd = &vmstate_ppce500_pci, | |
335 | }; | |
336 | ||
337 | static void e500_pci_register(void) | |
74c62ba8 | 338 | { |
be13cc7a AG |
339 | sysbus_register_withprop(&e500_pcihost_info); |
340 | pci_qdev_register(&e500_host_bridge_info); | |
74c62ba8 | 341 | } |
be13cc7a | 342 | device_init(e500_pci_register); |