]>
Commit | Line | Data |
---|---|---|
5f820439 DL |
1 | /* |
2 | * Copyright (C) 2006 Freescale Semiconductor, Inc. | |
3 | * | |
4 | * See file CREDITS for list of people who contributed to this | |
5 | * project. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU General Public License as | |
9 | * published by the Free Software Foundation; either version 2 of | |
10 | * the License, or (at your option) any later version. | |
11 | */ | |
12 | ||
13 | /* | |
14 | * PCI Configuration space access support for MPC83xx PCI Bridge | |
15 | */ | |
16 | #include <asm/mmu.h> | |
17 | #include <asm/io.h> | |
18 | #include <common.h> | |
19 | #include <pci.h> | |
20 | #include <i2c.h> | |
781e026c KP |
21 | #if defined(CONFIG_OF_FLAT_TREE) |
22 | #include <ft_build.h> | |
23 | #endif | |
5f820439 | 24 | |
be5e6181 | 25 | #include <asm/fsl_i2c.h> |
5f820439 DL |
26 | |
27 | DECLARE_GLOBAL_DATA_PTR; | |
28 | ||
29 | #if defined(CONFIG_PCI) | |
30 | #define PCI_FUNCTION_CONFIG 0x44 | |
31 | #define PCI_FUNCTION_CFG_LOCK 0x20 | |
32 | ||
33 | /* | |
34 | * Initialize PCI Devices, report devices found | |
35 | */ | |
36 | #ifndef CONFIG_PCI_PNP | |
37 | static struct pci_config_table pci_mpc83xxemds_config_table[] = { | |
38 | { | |
39 | PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, | |
40 | pci_cfgfunc_config_device, | |
41 | {PCI_ENET0_IOADDR, | |
42 | PCI_ENET0_MEMADDR, | |
43 | PCI_COMMON_MEMORY | PCI_COMMAND_MASTER} | |
44 | }, | |
45 | {} | |
46 | } | |
47 | #endif | |
48 | static struct pci_controller hose[] = { | |
49 | { | |
50 | #ifndef CONFIG_PCI_PNP | |
51 | config_table:pci_mpc83xxemds_config_table, | |
52 | #endif | |
53 | }, | |
54 | }; | |
55 | ||
56 | /********************************************************************** | |
57 | * pci_init_board() | |
58 | *********************************************************************/ | |
59 | void pci_init_board(void) | |
60 | #ifdef CONFIG_PCISLAVE | |
61 | { | |
62 | u16 reg16; | |
63 | volatile immap_t *immr; | |
64 | volatile law83xx_t *pci_law; | |
65 | volatile pot83xx_t *pci_pot; | |
66 | volatile pcictrl83xx_t *pci_ctrl; | |
67 | volatile pciconf83xx_t *pci_conf; | |
68 | ||
d239d74b | 69 | immr = (immap_t *) CFG_IMMR; |
5f820439 DL |
70 | pci_law = immr->sysconf.pcilaw; |
71 | pci_pot = immr->ios.pot; | |
72 | pci_ctrl = immr->pci_ctrl; | |
73 | pci_conf = immr->pci_conf; | |
74 | /* | |
75 | * Configure PCI Inbound Translation Windows | |
76 | */ | |
77 | pci_ctrl[0].pitar0 = 0x0; | |
78 | pci_ctrl[0].pibar0 = 0x0; | |
79 | pci_ctrl[0].piwar0 = PIWAR_EN | PIWAR_RTT_SNOOP | | |
80 | PIWAR_WTT_SNOOP | PIWAR_IWS_4K; | |
81 | ||
82 | pci_ctrl[0].pitar1 = 0x0; | |
83 | pci_ctrl[0].pibar1 = 0x0; | |
84 | pci_ctrl[0].piebar1 = 0x0; | |
85 | pci_ctrl[0].piwar1 &= ~PIWAR_EN; | |
86 | ||
87 | pci_ctrl[0].pitar2 = 0x0; | |
88 | pci_ctrl[0].pibar2 = 0x0; | |
89 | pci_ctrl[0].piebar2 = 0x0; | |
90 | pci_ctrl[0].piwar2 &= ~PIWAR_EN; | |
91 | ||
92 | hose[0].first_busno = 0; | |
93 | hose[0].last_busno = 0xff; | |
94 | pci_setup_indirect(&hose[0], | |
d239d74b | 95 | (CFG_IMMR + 0x8300), (CFG_IMMR + 0x8304)); |
5f820439 DL |
96 | reg16 = 0xff; |
97 | ||
98 | pci_hose_read_config_word(&hose[0], PCI_BDF(0, 0, 0), | |
99 | PCI_COMMAND, ®16); | |
100 | reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MEMORY; | |
101 | pci_hose_write_config_word(&hose[0], PCI_BDF(0, 0, 0), | |
102 | PCI_COMMAND, reg16); | |
103 | ||
104 | /* | |
105 | * Clear non-reserved bits in status register. | |
106 | */ | |
107 | pci_hose_write_config_word(&hose[0], PCI_BDF(0, 0, 0), | |
108 | PCI_STATUS, 0xffff); | |
109 | pci_hose_write_config_byte(&hose[0], PCI_BDF(0, 0, 0), | |
110 | PCI_LATENCY_TIMER, 0x80); | |
111 | ||
112 | /* | |
113 | * Unlock configuration lock in PCI function configuration register. | |
114 | */ | |
115 | pci_hose_read_config_word(&hose[0], PCI_BDF(0, 0, 0), | |
116 | PCI_FUNCTION_CONFIG, ®16); | |
117 | reg16 &= ~(PCI_FUNCTION_CFG_LOCK); | |
118 | pci_hose_write_config_word(&hose[0], PCI_BDF(0, 0, 0), | |
119 | PCI_FUNCTION_CONFIG, reg16); | |
120 | ||
121 | printf("Enabled PCI 32bit Agent Mode\n"); | |
122 | } | |
123 | #else | |
124 | { | |
125 | volatile immap_t *immr; | |
126 | volatile clk83xx_t *clk; | |
127 | volatile law83xx_t *pci_law; | |
128 | volatile pot83xx_t *pci_pot; | |
129 | volatile pcictrl83xx_t *pci_ctrl; | |
130 | volatile pciconf83xx_t *pci_conf; | |
131 | ||
132 | u8 val8, orig_i2c_bus; | |
133 | u16 reg16; | |
134 | u32 val32; | |
135 | u32 dev; | |
136 | ||
d239d74b | 137 | immr = (immap_t *) CFG_IMMR; |
5f820439 DL |
138 | clk = (clk83xx_t *) & immr->clk; |
139 | pci_law = immr->sysconf.pcilaw; | |
140 | pci_pot = immr->ios.pot; | |
141 | pci_ctrl = immr->pci_ctrl; | |
142 | pci_conf = immr->pci_conf; | |
143 | /* | |
144 | * Configure PCI controller and PCI_CLK_OUTPUT both in 66M mode | |
145 | */ | |
146 | val32 = clk->occr; | |
147 | udelay(2000); | |
148 | #if defined(PCI_66M) | |
149 | clk->occr = OCCR_PCICOE0 | OCCR_PCICOE1 | OCCR_PCICOE2; | |
150 | printf("PCI clock is 66MHz\n"); | |
151 | #elif defined(PCI_33M) | |
152 | clk->occr = OCCR_PCICOE0 | OCCR_PCICOE1 | OCCR_PCICOE2 | | |
153 | OCCR_PCICD0 | OCCR_PCICD1 | OCCR_PCICD2 | OCCR_PCICR; | |
154 | printf("PCI clock is 33MHz\n"); | |
155 | #else | |
156 | clk->occr = OCCR_PCICOE0 | OCCR_PCICOE1 | OCCR_PCICOE2; | |
157 | printf("PCI clock is 66MHz\n"); | |
158 | #endif | |
159 | udelay(2000); | |
160 | ||
161 | /* | |
162 | * Configure PCI Local Access Windows | |
163 | */ | |
164 | pci_law[0].bar = CFG_PCI_MEM_PHYS & LAWBAR_BAR; | |
165 | pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_512M; | |
166 | ||
167 | pci_law[1].bar = CFG_PCI_IO_PHYS & LAWBAR_BAR; | |
168 | pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_1M; | |
169 | ||
170 | /* | |
171 | * Configure PCI Outbound Translation Windows | |
172 | */ | |
173 | ||
174 | /* PCI mem space - prefetch */ | |
175 | pci_pot[0].potar = (CFG_PCI_MEM_BASE >> 12) & POTAR_TA_MASK; | |
176 | pci_pot[0].pobar = (CFG_PCI_MEM_PHYS >> 12) & POBAR_BA_MASK; | |
177 | pci_pot[0].pocmr = | |
178 | POCMR_EN | POCMR_SE | (POCMR_CM_256M & POCMR_CM_MASK); | |
179 | ||
180 | /* PCI mmio - non-prefetch mem space */ | |
181 | pci_pot[1].potar = (CFG_PCI_MMIO_BASE >> 12) & POTAR_TA_MASK; | |
182 | pci_pot[1].pobar = (CFG_PCI_MMIO_PHYS >> 12) & POBAR_BA_MASK; | |
183 | pci_pot[1].pocmr = POCMR_EN | (POCMR_CM_256M & POCMR_CM_MASK); | |
184 | ||
185 | /* PCI IO space */ | |
186 | pci_pot[2].potar = (CFG_PCI_IO_BASE >> 12) & POTAR_TA_MASK; | |
187 | pci_pot[2].pobar = (CFG_PCI_IO_PHYS >> 12) & POBAR_BA_MASK; | |
188 | pci_pot[2].pocmr = POCMR_EN | POCMR_IO | (POCMR_CM_1M & POCMR_CM_MASK); | |
189 | ||
190 | /* | |
191 | * Configure PCI Inbound Translation Windows | |
192 | */ | |
193 | pci_ctrl[0].pitar1 = (CFG_PCI_SLV_MEM_LOCAL >> 12) & PITAR_TA_MASK; | |
194 | pci_ctrl[0].pibar1 = (CFG_PCI_SLV_MEM_BUS >> 12) & PIBAR_MASK; | |
195 | pci_ctrl[0].piebar1 = 0x0; | |
196 | pci_ctrl[0].piwar1 = | |
197 | PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP | PIWAR_WTT_SNOOP | | |
198 | PIWAR_IWS_2G; | |
199 | ||
200 | /* | |
201 | * Assign PIB PMC slot to desired PCI bus | |
202 | */ | |
203 | ||
9ca880a2 TT |
204 | /* Switch temporarily to I2C bus #2 */ |
205 | orig_i2c_bus = i2c_get_bus_num(); | |
be5e6181 | 206 | i2c_set_bus_num(1); |
5f820439 DL |
207 | |
208 | val8 = 0; | |
209 | i2c_write(0x23, 0x6, 1, &val8, 1); | |
210 | i2c_write(0x23, 0x7, 1, &val8, 1); | |
211 | val8 = 0xff; | |
212 | i2c_write(0x23, 0x2, 1, &val8, 1); | |
213 | i2c_write(0x23, 0x3, 1, &val8, 1); | |
214 | ||
215 | val8 = 0; | |
216 | i2c_write(0x26, 0x6, 1, &val8, 1); | |
217 | val8 = 0x34; | |
218 | i2c_write(0x26, 0x7, 1, &val8, 1); | |
219 | ||
220 | val8 = 0xf3; /*PMC1, PMC2, PMC3 slot to PCI bus */ | |
221 | i2c_write(0x26, 0x2, 1, &val8, 1); | |
222 | val8 = 0xff; | |
223 | i2c_write(0x26, 0x3, 1, &val8, 1); | |
224 | ||
225 | val8 = 0; | |
226 | i2c_write(0x27, 0x6, 1, &val8, 1); | |
227 | i2c_write(0x27, 0x7, 1, &val8, 1); | |
228 | val8 = 0xff; | |
229 | i2c_write(0x27, 0x2, 1, &val8, 1); | |
230 | val8 = 0xef; | |
231 | i2c_write(0x27, 0x3, 1, &val8, 1); | |
232 | asm("eieio"); | |
233 | ||
9ca880a2 | 234 | /* Reset to original I2C bus */ |
be5e6181 | 235 | i2c_set_bus_num(orig_i2c_bus); |
bf0b542d | 236 | |
5f820439 DL |
237 | /* |
238 | * Release PCI RST Output signal | |
239 | */ | |
240 | udelay(2000); | |
241 | pci_ctrl[0].gcr = 1; | |
242 | udelay(2000); | |
243 | ||
244 | hose[0].first_busno = 0; | |
245 | hose[0].last_busno = 0xff; | |
246 | ||
247 | /* PCI memory prefetch space */ | |
248 | pci_set_region(hose[0].regions + 0, | |
249 | CFG_PCI_MEM_BASE, | |
250 | CFG_PCI_MEM_PHYS, | |
251 | CFG_PCI_MEM_SIZE, PCI_REGION_MEM | PCI_REGION_PREFETCH); | |
252 | ||
253 | /* PCI memory space */ | |
254 | pci_set_region(hose[0].regions + 1, | |
255 | CFG_PCI_MMIO_BASE, | |
256 | CFG_PCI_MMIO_PHYS, CFG_PCI_MMIO_SIZE, PCI_REGION_MEM); | |
257 | ||
258 | /* PCI IO space */ | |
259 | pci_set_region(hose[0].regions + 2, | |
260 | CFG_PCI_IO_BASE, | |
261 | CFG_PCI_IO_PHYS, CFG_PCI_IO_SIZE, PCI_REGION_IO); | |
262 | ||
263 | /* System memory space */ | |
264 | pci_set_region(hose[0].regions + 3, | |
265 | CFG_PCI_SLV_MEM_LOCAL, | |
266 | CFG_PCI_SLV_MEM_BUS, | |
267 | CFG_PCI_SLV_MEM_SIZE, | |
268 | PCI_REGION_MEM | PCI_REGION_MEMORY); | |
269 | ||
270 | hose[0].region_count = 4; | |
271 | ||
272 | pci_setup_indirect(&hose[0], | |
d239d74b | 273 | (CFG_IMMR + 0x8300), (CFG_IMMR + 0x8304)); |
5f820439 DL |
274 | |
275 | pci_register_hose(hose); | |
276 | ||
277 | /* | |
278 | * Write command register | |
279 | */ | |
280 | reg16 = 0xff; | |
281 | dev = PCI_BDF(0, 0, 0); | |
282 | pci_hose_read_config_word(&hose[0], dev, PCI_COMMAND, ®16); | |
283 | reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY; | |
284 | pci_hose_write_config_word(&hose[0], dev, PCI_COMMAND, reg16); | |
285 | ||
286 | /* | |
287 | * Clear non-reserved bits in status register. | |
288 | */ | |
289 | pci_hose_write_config_word(&hose[0], dev, PCI_STATUS, 0xffff); | |
290 | pci_hose_write_config_byte(&hose[0], dev, PCI_LATENCY_TIMER, 0x80); | |
291 | pci_hose_write_config_byte(&hose[0], dev, PCI_CACHE_LINE_SIZE, 0x08); | |
292 | ||
293 | printf("PCI 32bit bus on PMC1 & PMC2 & PMC3\n"); | |
294 | ||
295 | /* | |
296 | * Hose scan. | |
297 | */ | |
298 | hose->last_busno = pci_hose_scan(hose); | |
299 | } | |
300 | #endif /* CONFIG_PCISLAVE */ | |
bf0b542d KP |
301 | |
302 | #ifdef CONFIG_OF_FLAT_TREE | |
303 | void | |
304 | ft_pci_setup(void *blob, bd_t *bd) | |
305 | { | |
306 | u32 *p; | |
307 | int len; | |
308 | ||
309 | p = (u32 *)ft_get_prop(blob, "/" OF_SOC "/pci@8500/bus-range", &len); | |
310 | if (p != NULL) { | |
311 | p[0] = hose[0].first_busno; | |
312 | p[1] = hose[0].last_busno; | |
313 | } | |
314 | } | |
315 | #endif /* CONFIG_OF_FLAT_TREE */ | |
5f820439 | 316 | #endif /* CONFIG_PCI */ |