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[POWERPC] Spelling fixes: arch/ppc/
[linux-2.6/kmemtrace.git] / arch / ppc / syslib / mv64x60.c
blob8485a68cd4753ade53df7dcce6771b44d02d9387
1 /*
2 * Common routines for the Marvell/Galileo Discovery line of host bridges
3 * (gt64260, mv64360, mv64460, ...).
4 *
5 * Author: Mark A. Greer <mgreer@mvista.com>
6 *
7 * 2004 (c) MontaVista, Software, Inc. This file is licensed under
8 * the terms of the GNU General Public License version 2. This program
9 * is licensed "as is" without any warranty of any kind, whether express
10 * or implied.
11 */
12 #include <linux/kernel.h>
13 #include <linux/init.h>
14 #include <linux/pci.h>
15 #include <linux/slab.h>
16 #include <linux/module.h>
17 #include <linux/string.h>
18 #include <linux/spinlock.h>
19 #include <linux/mv643xx.h>
20 #include <linux/platform_device.h>
21
22 #include <asm/byteorder.h>
23 #include <asm/io.h>
24 #include <asm/irq.h>
25 #include <asm/uaccess.h>
26 #include <asm/machdep.h>
27 #include <asm/pci-bridge.h>
28 #include <asm/delay.h>
29 #include <asm/mv64x60.h>
30
31
32 u8 mv64x60_pci_exclude_bridge = 1;
33 DEFINE_SPINLOCK(mv64x60_lock);
34
35 static phys_addr_t mv64x60_bridge_pbase;
36 static void __iomem *mv64x60_bridge_vbase;
37 static u32 mv64x60_bridge_type = MV64x60_TYPE_INVALID;
38 static u32 mv64x60_bridge_rev;
39 #if defined(CONFIG_SYSFS) && !defined(CONFIG_GT64260)
40 static struct pci_controller sysfs_hose_a;
41 #endif
42
43 static u32 gt64260_translate_size(u32 base, u32 size, u32 num_bits);
44 static u32 gt64260_untranslate_size(u32 base, u32 size, u32 num_bits);
45 static void gt64260_set_pci2mem_window(struct pci_controller *hose, u32 bus,
46 u32 window, u32 base);
47 static void gt64260_set_pci2regs_window(struct mv64x60_handle *bh,
48 struct pci_controller *hose, u32 bus, u32 base);
49 static u32 gt64260_is_enabled_32bit(struct mv64x60_handle *bh, u32 window);
50 static void gt64260_enable_window_32bit(struct mv64x60_handle *bh, u32 window);
51 static void gt64260_disable_window_32bit(struct mv64x60_handle *bh, u32 window);
52 static void gt64260_enable_window_64bit(struct mv64x60_handle *bh, u32 window);
53 static void gt64260_disable_window_64bit(struct mv64x60_handle *bh, u32 window);
54 static void gt64260_disable_all_windows(struct mv64x60_handle *bh,
55 struct mv64x60_setup_info *si);
56 static void gt64260a_chip_specific_init(struct mv64x60_handle *bh,
57 struct mv64x60_setup_info *si);
58 static void gt64260b_chip_specific_init(struct mv64x60_handle *bh,
59 struct mv64x60_setup_info *si);
60
61 static u32 mv64360_translate_size(u32 base, u32 size, u32 num_bits);
62 static u32 mv64360_untranslate_size(u32 base, u32 size, u32 num_bits);
63 static void mv64360_set_pci2mem_window(struct pci_controller *hose, u32 bus,
64 u32 window, u32 base);
65 static void mv64360_set_pci2regs_window(struct mv64x60_handle *bh,
66 struct pci_controller *hose, u32 bus, u32 base);
67 static u32 mv64360_is_enabled_32bit(struct mv64x60_handle *bh, u32 window);
68 static void mv64360_enable_window_32bit(struct mv64x60_handle *bh, u32 window);
69 static void mv64360_disable_window_32bit(struct mv64x60_handle *bh, u32 window);
70 static void mv64360_enable_window_64bit(struct mv64x60_handle *bh, u32 window);
71 static void mv64360_disable_window_64bit(struct mv64x60_handle *bh, u32 window);
72 static void mv64360_disable_all_windows(struct mv64x60_handle *bh,
73 struct mv64x60_setup_info *si);
74 static void mv64360_config_io2mem_windows(struct mv64x60_handle *bh,
75 struct mv64x60_setup_info *si,
76 u32 mem_windows[MV64x60_CPU2MEM_WINDOWS][2]);
77 static void mv64360_set_mpsc2regs_window(struct mv64x60_handle *bh, u32 base);
78 static void mv64360_chip_specific_init(struct mv64x60_handle *bh,
79 struct mv64x60_setup_info *si);
80 static void mv64460_chip_specific_init(struct mv64x60_handle *bh,
81 struct mv64x60_setup_info *si);
82
83
84 /*
85 * Define tables that have the chip-specific info for each type of
86 * Marvell bridge chip.
87 */
88 static struct mv64x60_chip_info gt64260a_ci __initdata = { /* GT64260A */
89 .translate_size = gt64260_translate_size,
90 .untranslate_size = gt64260_untranslate_size,
91 .set_pci2mem_window = gt64260_set_pci2mem_window,
92 .set_pci2regs_window = gt64260_set_pci2regs_window,
93 .is_enabled_32bit = gt64260_is_enabled_32bit,
94 .enable_window_32bit = gt64260_enable_window_32bit,
95 .disable_window_32bit = gt64260_disable_window_32bit,
96 .enable_window_64bit = gt64260_enable_window_64bit,
97 .disable_window_64bit = gt64260_disable_window_64bit,
98 .disable_all_windows = gt64260_disable_all_windows,
99 .chip_specific_init = gt64260a_chip_specific_init,
100 .window_tab_32bit = gt64260_32bit_windows,
101 .window_tab_64bit = gt64260_64bit_windows,
102 };
103
104 static struct mv64x60_chip_info gt64260b_ci __initdata = { /* GT64260B */
105 .translate_size = gt64260_translate_size,
106 .untranslate_size = gt64260_untranslate_size,
107 .set_pci2mem_window = gt64260_set_pci2mem_window,
108 .set_pci2regs_window = gt64260_set_pci2regs_window,
109 .is_enabled_32bit = gt64260_is_enabled_32bit,
110 .enable_window_32bit = gt64260_enable_window_32bit,
111 .disable_window_32bit = gt64260_disable_window_32bit,
112 .enable_window_64bit = gt64260_enable_window_64bit,
113 .disable_window_64bit = gt64260_disable_window_64bit,
114 .disable_all_windows = gt64260_disable_all_windows,
115 .chip_specific_init = gt64260b_chip_specific_init,
116 .window_tab_32bit = gt64260_32bit_windows,
117 .window_tab_64bit = gt64260_64bit_windows,
118 };
119
120 static struct mv64x60_chip_info mv64360_ci __initdata = { /* MV64360 */
121 .translate_size = mv64360_translate_size,
122 .untranslate_size = mv64360_untranslate_size,
123 .set_pci2mem_window = mv64360_set_pci2mem_window,
124 .set_pci2regs_window = mv64360_set_pci2regs_window,
125 .is_enabled_32bit = mv64360_is_enabled_32bit,
126 .enable_window_32bit = mv64360_enable_window_32bit,
127 .disable_window_32bit = mv64360_disable_window_32bit,
128 .enable_window_64bit = mv64360_enable_window_64bit,
129 .disable_window_64bit = mv64360_disable_window_64bit,
130 .disable_all_windows = mv64360_disable_all_windows,
131 .config_io2mem_windows = mv64360_config_io2mem_windows,
132 .set_mpsc2regs_window = mv64360_set_mpsc2regs_window,
133 .chip_specific_init = mv64360_chip_specific_init,
134 .window_tab_32bit = mv64360_32bit_windows,
135 .window_tab_64bit = mv64360_64bit_windows,
136 };
137
138 static struct mv64x60_chip_info mv64460_ci __initdata = { /* MV64460 */
139 .translate_size = mv64360_translate_size,
140 .untranslate_size = mv64360_untranslate_size,
141 .set_pci2mem_window = mv64360_set_pci2mem_window,
142 .set_pci2regs_window = mv64360_set_pci2regs_window,
143 .is_enabled_32bit = mv64360_is_enabled_32bit,
144 .enable_window_32bit = mv64360_enable_window_32bit,
145 .disable_window_32bit = mv64360_disable_window_32bit,
146 .enable_window_64bit = mv64360_enable_window_64bit,
147 .disable_window_64bit = mv64360_disable_window_64bit,
148 .disable_all_windows = mv64360_disable_all_windows,
149 .config_io2mem_windows = mv64360_config_io2mem_windows,
150 .set_mpsc2regs_window = mv64360_set_mpsc2regs_window,
151 .chip_specific_init = mv64460_chip_specific_init,
152 .window_tab_32bit = mv64360_32bit_windows,
153 .window_tab_64bit = mv64360_64bit_windows,
154 };
155
156 /*
157 *****************************************************************************
158 *
159 * Platform Device Definitions
160 *
161 *****************************************************************************
162 */
163 #ifdef CONFIG_SERIAL_MPSC
164 static struct mpsc_shared_pdata mv64x60_mpsc_shared_pdata = {
165 .mrr_val = 0x3ffffe38,
166 .rcrr_val = 0,
167 .tcrr_val = 0,
168 .intr_cause_val = 0,
169 .intr_mask_val = 0,
170 };
171
172 static struct resource mv64x60_mpsc_shared_resources[] = {
173 /* Do not change the order of the IORESOURCE_MEM resources */
174 [0] = {
175 .name = "mpsc routing base",
176 .start = MV64x60_MPSC_ROUTING_OFFSET,
177 .end = MV64x60_MPSC_ROUTING_OFFSET +
178 MPSC_ROUTING_REG_BLOCK_SIZE - 1,
179 .flags = IORESOURCE_MEM,
180 },
181 [1] = {
182 .name = "sdma intr base",
183 .start = MV64x60_SDMA_INTR_OFFSET,
184 .end = MV64x60_SDMA_INTR_OFFSET +
185 MPSC_SDMA_INTR_REG_BLOCK_SIZE - 1,
186 .flags = IORESOURCE_MEM,
187 },
188 };
189
190 static struct platform_device mpsc_shared_device = { /* Shared device */
191 .name = MPSC_SHARED_NAME,
192 .id = 0,
193 .num_resources = ARRAY_SIZE(mv64x60_mpsc_shared_resources),
194 .resource = mv64x60_mpsc_shared_resources,
195 .dev = {
196 .platform_data = &mv64x60_mpsc_shared_pdata,
197 },
198 };
199
200 static struct mpsc_pdata mv64x60_mpsc0_pdata = {
201 .mirror_regs = 0,
202 .cache_mgmt = 0,
203 .max_idle = 0,
204 .default_baud = 9600,
205 .default_bits = 8,
206 .default_parity = 'n',
207 .default_flow = 'n',
208 .chr_1_val = 0x00000000,
209 .chr_2_val = 0x00000000,
210 .chr_10_val = 0x00000003,
211 .mpcr_val = 0,
212 .bcr_val = 0,
213 .brg_can_tune = 0,
214 .brg_clk_src = 8, /* Default to TCLK */
215 .brg_clk_freq = 100000000, /* Default to 100 MHz */
216 };
217
218 static struct resource mv64x60_mpsc0_resources[] = {
219 /* Do not change the order of the IORESOURCE_MEM resources */
220 [0] = {
221 .name = "mpsc 0 base",
222 .start = MV64x60_MPSC_0_OFFSET,
223 .end = MV64x60_MPSC_0_OFFSET + MPSC_REG_BLOCK_SIZE - 1,
224 .flags = IORESOURCE_MEM,
225 },
226 [1] = {
227 .name = "sdma 0 base",
228 .start = MV64x60_SDMA_0_OFFSET,
229 .end = MV64x60_SDMA_0_OFFSET + MPSC_SDMA_REG_BLOCK_SIZE - 1,
230 .flags = IORESOURCE_MEM,
231 },
232 [2] = {
233 .name = "brg 0 base",
234 .start = MV64x60_BRG_0_OFFSET,
235 .end = MV64x60_BRG_0_OFFSET + MPSC_BRG_REG_BLOCK_SIZE - 1,
236 .flags = IORESOURCE_MEM,
237 },
238 [3] = {
239 .name = "sdma 0 irq",
240 .start = MV64x60_IRQ_SDMA_0,
241 .end = MV64x60_IRQ_SDMA_0,
242 .flags = IORESOURCE_IRQ,
243 },
244 };
245
246 static struct platform_device mpsc0_device = {
247 .name = MPSC_CTLR_NAME,
248 .id = 0,
249 .num_resources = ARRAY_SIZE(mv64x60_mpsc0_resources),
250 .resource = mv64x60_mpsc0_resources,
251 .dev = {
252 .platform_data = &mv64x60_mpsc0_pdata,
253 },
254 };
255
256 static struct mpsc_pdata mv64x60_mpsc1_pdata = {
257 .mirror_regs = 0,
258 .cache_mgmt = 0,
259 .max_idle = 0,
260 .default_baud = 9600,
261 .default_bits = 8,
262 .default_parity = 'n',
263 .default_flow = 'n',
264 .chr_1_val = 0x00000000,
265 .chr_1_val = 0x00000000,
266 .chr_2_val = 0x00000000,
267 .chr_10_val = 0x00000003,
268 .mpcr_val = 0,
269 .bcr_val = 0,
270 .brg_can_tune = 0,
271 .brg_clk_src = 8, /* Default to TCLK */
272 .brg_clk_freq = 100000000, /* Default to 100 MHz */
273 };
274
275 static struct resource mv64x60_mpsc1_resources[] = {
276 /* Do not change the order of the IORESOURCE_MEM resources */
277 [0] = {
278 .name = "mpsc 1 base",
279 .start = MV64x60_MPSC_1_OFFSET,
280 .end = MV64x60_MPSC_1_OFFSET + MPSC_REG_BLOCK_SIZE - 1,
281 .flags = IORESOURCE_MEM,
282 },
283 [1] = {
284 .name = "sdma 1 base",
285 .start = MV64x60_SDMA_1_OFFSET,
286 .end = MV64x60_SDMA_1_OFFSET + MPSC_SDMA_REG_BLOCK_SIZE - 1,
287 .flags = IORESOURCE_MEM,
288 },
289 [2] = {
290 .name = "brg 1 base",
291 .start = MV64x60_BRG_1_OFFSET,
292 .end = MV64x60_BRG_1_OFFSET + MPSC_BRG_REG_BLOCK_SIZE - 1,
293 .flags = IORESOURCE_MEM,
294 },
295 [3] = {
296 .name = "sdma 1 irq",
297 .start = MV64360_IRQ_SDMA_1,
298 .end = MV64360_IRQ_SDMA_1,
299 .flags = IORESOURCE_IRQ,
300 },
301 };
302
303 static struct platform_device mpsc1_device = {
304 .name = MPSC_CTLR_NAME,
305 .id = 1,
306 .num_resources = ARRAY_SIZE(mv64x60_mpsc1_resources),
307 .resource = mv64x60_mpsc1_resources,
308 .dev = {
309 .platform_data = &mv64x60_mpsc1_pdata,
310 },
311 };
312 #endif
313
314 #if defined(CONFIG_MV643XX_ETH) || defined(CONFIG_MV643XX_ETH_MODULE)
315 static struct resource mv64x60_eth_shared_resources[] = {
316 [0] = {
317 .name = "ethernet shared base",
318 .start = MV643XX_ETH_SHARED_REGS,
319 .end = MV643XX_ETH_SHARED_REGS +
320 MV643XX_ETH_SHARED_REGS_SIZE - 1,
321 .flags = IORESOURCE_MEM,
322 },
323 };
324
325 static struct platform_device mv64x60_eth_shared_device = {
326 .name = MV643XX_ETH_SHARED_NAME,
327 .id = 0,
328 .num_resources = ARRAY_SIZE(mv64x60_eth_shared_resources),
329 .resource = mv64x60_eth_shared_resources,
330 };
331
332 #ifdef CONFIG_MV643XX_ETH_0
333 static struct resource mv64x60_eth0_resources[] = {
334 [0] = {
335 .name = "eth0 irq",
336 .start = MV64x60_IRQ_ETH_0,
337 .end = MV64x60_IRQ_ETH_0,
338 .flags = IORESOURCE_IRQ,
339 },
340 };
341
342 static struct mv643xx_eth_platform_data eth0_pd = {
343 .port_number = 0,
344 };
345
346 static struct platform_device eth0_device = {
347 .name = MV643XX_ETH_NAME,
348 .id = 0,
349 .num_resources = ARRAY_SIZE(mv64x60_eth0_resources),
350 .resource = mv64x60_eth0_resources,
351 .dev = {
352 .platform_data = &eth0_pd,
353 },
354 };
355 #endif
356
357 #ifdef CONFIG_MV643XX_ETH_1
358 static struct resource mv64x60_eth1_resources[] = {
359 [0] = {
360 .name = "eth1 irq",
361 .start = MV64x60_IRQ_ETH_1,
362 .end = MV64x60_IRQ_ETH_1,
363 .flags = IORESOURCE_IRQ,
364 },
365 };
366
367 static struct mv643xx_eth_platform_data eth1_pd = {
368 .port_number = 1,
369 };
370
371 static struct platform_device eth1_device = {
372 .name = MV643XX_ETH_NAME,
373 .id = 1,
374 .num_resources = ARRAY_SIZE(mv64x60_eth1_resources),
375 .resource = mv64x60_eth1_resources,
376 .dev = {
377 .platform_data = &eth1_pd,
378 },
379 };
380 #endif
381
382 #ifdef CONFIG_MV643XX_ETH_2
383 static struct resource mv64x60_eth2_resources[] = {
384 [0] = {
385 .name = "eth2 irq",
386 .start = MV64x60_IRQ_ETH_2,
387 .end = MV64x60_IRQ_ETH_2,
388 .flags = IORESOURCE_IRQ,
389 },
390 };
391
392 static struct mv643xx_eth_platform_data eth2_pd = {
393 .port_number = 2,
394 };
395
396 static struct platform_device eth2_device = {
397 .name = MV643XX_ETH_NAME,
398 .id = 2,
399 .num_resources = ARRAY_SIZE(mv64x60_eth2_resources),
400 .resource = mv64x60_eth2_resources,
401 .dev = {
402 .platform_data = &eth2_pd,
403 },
404 };
405 #endif
406 #endif
407
408 #ifdef CONFIG_I2C_MV64XXX
409 static struct mv64xxx_i2c_pdata mv64xxx_i2c_pdata = {
410 .freq_m = 8,
411 .freq_n = 3,
412 .timeout = 1000, /* Default timeout of 1 second */
413 .retries = 1,
414 };
415
416 static struct resource mv64xxx_i2c_resources[] = {
417 /* Do not change the order of the IORESOURCE_MEM resources */
418 [0] = {
419 .name = "mv64xxx i2c base",
420 .start = MV64XXX_I2C_OFFSET,
421 .end = MV64XXX_I2C_OFFSET + MV64XXX_I2C_REG_BLOCK_SIZE - 1,
422 .flags = IORESOURCE_MEM,
423 },
424 [1] = {
425 .name = "mv64xxx i2c irq",
426 .start = MV64x60_IRQ_I2C,
427 .end = MV64x60_IRQ_I2C,
428 .flags = IORESOURCE_IRQ,
429 },
430 };
431
432 static struct platform_device i2c_device = {
433 .name = MV64XXX_I2C_CTLR_NAME,
434 .id = 0,
435 .num_resources = ARRAY_SIZE(mv64xxx_i2c_resources),
436 .resource = mv64xxx_i2c_resources,
437 .dev = {
438 .platform_data = &mv64xxx_i2c_pdata,
439 },
440 };
441 #endif
442
443 #if defined(CONFIG_SYSFS) && !defined(CONFIG_GT64260)
444 static struct mv64xxx_pdata mv64xxx_pdata = {
445 .hs_reg_valid = 0,
446 };
447
448 static struct platform_device mv64xxx_device = { /* general mv64x60 stuff */
449 .name = MV64XXX_DEV_NAME,
450 .id = 0,
451 .dev = {
452 .platform_data = &mv64xxx_pdata,
453 },
454 };
455 #endif
456
457 static struct platform_device *mv64x60_pd_devs[] __initdata = {
458 #ifdef CONFIG_SERIAL_MPSC
459 &mpsc_shared_device,
460 &mpsc0_device,
461 &mpsc1_device,
462 #endif
463 #if defined(CONFIG_MV643XX_ETH) || defined(CONFIG_MV643XX_ETH_MODULE)
464 &mv64x60_eth_shared_device,
465 #endif
466 #ifdef CONFIG_MV643XX_ETH_0
467 &eth0_device,
468 #endif
469 #ifdef CONFIG_MV643XX_ETH_1
470 &eth1_device,
471 #endif
472 #ifdef CONFIG_MV643XX_ETH_2
473 &eth2_device,
474 #endif
475 #ifdef CONFIG_I2C_MV64XXX
476 &i2c_device,
477 #endif
478 #if defined(CONFIG_SYSFS) && !defined(CONFIG_GT64260)
479 &mv64xxx_device,
480 #endif
481 };
482
483 /*
484 *****************************************************************************
485 *
486 * Bridge Initialization Routines
487 *
488 *****************************************************************************
489 */
490 /*
491 * mv64x60_init()
492 *
493 * Initialize the bridge based on setting passed in via 'si'. The bridge
494 * handle, 'bh', will be set so that it can be used to make subsequent
495 * calls to routines in this file.
496 */
497 int __init
498 mv64x60_init(struct mv64x60_handle *bh, struct mv64x60_setup_info *si)
499 {
500 u32 mem_windows[MV64x60_CPU2MEM_WINDOWS][2];
501
502 if (ppc_md.progress)
503 ppc_md.progress("mv64x60 initialization", 0x0);
504
505 spin_lock_init(&mv64x60_lock);
506 mv64x60_early_init(bh, si);
507
508 if (mv64x60_get_type(bh) || mv64x60_setup_for_chip(bh)) {
509 iounmap(bh->v_base);
510 bh->v_base = 0;
511 if (ppc_md.progress)
512 ppc_md.progress("mv64x60_init: Can't determine chip",0);
513 return -1;
514 }
515
516 bh->ci->disable_all_windows(bh, si);
517 mv64x60_get_mem_windows(bh, mem_windows);
518 mv64x60_config_cpu2mem_windows(bh, si, mem_windows);
519
520 if (bh->ci->config_io2mem_windows)
521 bh->ci->config_io2mem_windows(bh, si, mem_windows);
522 if (bh->ci->set_mpsc2regs_window)
523 bh->ci->set_mpsc2regs_window(bh, si->phys_reg_base);
524
525 if (si->pci_1.enable_bus) {
526 bh->io_base_b = (u32)ioremap(si->pci_1.pci_io.cpu_base,
527 si->pci_1.pci_io.size);
528 isa_io_base = bh->io_base_b;
529 }
530
531 if (si->pci_0.enable_bus) {
532 bh->io_base_a = (u32)ioremap(si->pci_0.pci_io.cpu_base,
533 si->pci_0.pci_io.size);
534 isa_io_base = bh->io_base_a;
535
536 mv64x60_alloc_hose(bh, MV64x60_PCI0_CONFIG_ADDR,
537 MV64x60_PCI0_CONFIG_DATA, &bh->hose_a);
538 mv64x60_config_resources(bh->hose_a, &si->pci_0, bh->io_base_a);
539 mv64x60_config_pci_params(bh->hose_a, &si->pci_0);
540
541 mv64x60_config_cpu2pci_windows(bh, &si->pci_0, 0);
542 mv64x60_config_pci2mem_windows(bh, bh->hose_a, &si->pci_0, 0,
543 mem_windows);
544 bh->ci->set_pci2regs_window(bh, bh->hose_a, 0,
545 si->phys_reg_base);
546 }
547
548 if (si->pci_1.enable_bus) {
549 mv64x60_alloc_hose(bh, MV64x60_PCI1_CONFIG_ADDR,
550 MV64x60_PCI1_CONFIG_DATA, &bh->hose_b);
551 mv64x60_config_resources(bh->hose_b, &si->pci_1, bh->io_base_b);
552 mv64x60_config_pci_params(bh->hose_b, &si->pci_1);
553
554 mv64x60_config_cpu2pci_windows(bh, &si->pci_1, 1);
555 mv64x60_config_pci2mem_windows(bh, bh->hose_b, &si->pci_1, 1,
556 mem_windows);
557 bh->ci->set_pci2regs_window(bh, bh->hose_b, 1,
558 si->phys_reg_base);
559 }
560
561 bh->ci->chip_specific_init(bh, si);
562 mv64x60_pd_fixup(bh, mv64x60_pd_devs, ARRAY_SIZE(mv64x60_pd_devs));
563
564 return 0;
565 }
566
567 /*
568 * mv64x60_early_init()
569 *
570 * Do some bridge work that must take place before we start messing with
571 * the bridge for real.
572 */
573 void __init
574 mv64x60_early_init(struct mv64x60_handle *bh, struct mv64x60_setup_info *si)
575 {
576 struct pci_controller hose_a, hose_b;
577
578 memset(bh, 0, sizeof(*bh));
579
580 bh->p_base = si->phys_reg_base;
581 bh->v_base = ioremap(bh->p_base, MV64x60_INTERNAL_SPACE_SIZE);
582
583 mv64x60_bridge_pbase = bh->p_base;
584 mv64x60_bridge_vbase = bh->v_base;
585
586 /* Assuming pci mode [reserved] bits 4:5 on 64260 are 0 */
587 bh->pci_mode_a = mv64x60_read(bh, MV64x60_PCI0_MODE) &
588 MV64x60_PCIMODE_MASK;
589 bh->pci_mode_b = mv64x60_read(bh, MV64x60_PCI1_MODE) &
590 MV64x60_PCIMODE_MASK;
591
592 /* Need temporary hose structs to call mv64x60_set_bus() */
593 memset(&hose_a, 0, sizeof(hose_a));
594 memset(&hose_b, 0, sizeof(hose_b));
595 setup_indirect_pci_nomap(&hose_a, bh->v_base + MV64x60_PCI0_CONFIG_ADDR,
596 bh->v_base + MV64x60_PCI0_CONFIG_DATA);
597 setup_indirect_pci_nomap(&hose_b, bh->v_base + MV64x60_PCI1_CONFIG_ADDR,
598 bh->v_base + MV64x60_PCI1_CONFIG_DATA);
599 bh->hose_a = &hose_a;
600 bh->hose_b = &hose_b;
601
602 #if defined(CONFIG_SYSFS) && !defined(CONFIG_GT64260)
603 /* Save a copy of hose_a for sysfs functions -- hack */
604 memcpy(&sysfs_hose_a, &hose_a, sizeof(hose_a));
605 #endif
606
607 mv64x60_set_bus(bh, 0, 0);
608 mv64x60_set_bus(bh, 1, 0);
609
610 bh->hose_a = NULL;
611 bh->hose_b = NULL;
612
613 /* Clear bit 0 of PCI addr decode control so PCI->CPU remap 1:1 */
614 mv64x60_clr_bits(bh, MV64x60_PCI0_PCI_DECODE_CNTL, 0x00000001);
615 mv64x60_clr_bits(bh, MV64x60_PCI1_PCI_DECODE_CNTL, 0x00000001);
616
617 /* Bit 12 MUST be 0; set bit 27--don't auto-update cpu remap regs */
618 mv64x60_clr_bits(bh, MV64x60_CPU_CONFIG, (1<<12));
619 mv64x60_set_bits(bh, MV64x60_CPU_CONFIG, (1<<27));
620
621 mv64x60_set_bits(bh, MV64x60_PCI0_TO_RETRY, 0xffff);
622 mv64x60_set_bits(bh, MV64x60_PCI1_TO_RETRY, 0xffff);
623 }
624
625 /*
626 *****************************************************************************
627 *
628 * Window Config Routines
629 *
630 *****************************************************************************
631 */
632 /*
633 * mv64x60_get_32bit_window()
634 *
635 * Determine the base address and size of a 32-bit window on the bridge.
636 */
637 void __init
638 mv64x60_get_32bit_window(struct mv64x60_handle *bh, u32 window,
639 u32 *base, u32 *size)
640 {
641 u32 val, base_reg, size_reg, base_bits, size_bits;
642 u32 (*get_from_field)(u32 val, u32 num_bits);
643
644 base_reg = bh->ci->window_tab_32bit[window].base_reg;
645
646 if (base_reg != 0) {
647 size_reg = bh->ci->window_tab_32bit[window].size_reg;
648 base_bits = bh->ci->window_tab_32bit[window].base_bits;
649 size_bits = bh->ci->window_tab_32bit[window].size_bits;
650 get_from_field= bh->ci->window_tab_32bit[window].get_from_field;
651
652 val = mv64x60_read(bh, base_reg);
653 *base = get_from_field(val, base_bits);
654
655 if (size_reg != 0) {
656 val = mv64x60_read(bh, size_reg);
657 val = get_from_field(val, size_bits);
658 *size = bh->ci->untranslate_size(*base, val, size_bits);
659 } else
660 *size = 0;
661 } else {
662 *base = 0;
663 *size = 0;
664 }
665
666 pr_debug("get 32bit window: %d, base: 0x%x, size: 0x%x\n",
667 window, *base, *size);
668 }
669
670 /*
671 * mv64x60_set_32bit_window()
672 *
673 * Set the base address and size of a 32-bit window on the bridge.
674 */
675 void __init
676 mv64x60_set_32bit_window(struct mv64x60_handle *bh, u32 window,
677 u32 base, u32 size, u32 other_bits)
678 {
679 u32 val, base_reg, size_reg, base_bits, size_bits;
680 u32 (*map_to_field)(u32 val, u32 num_bits);
681
682 pr_debug("set 32bit window: %d, base: 0x%x, size: 0x%x, other: 0x%x\n",
683 window, base, size, other_bits);
684
685 base_reg = bh->ci->window_tab_32bit[window].base_reg;
686
687 if (base_reg != 0) {
688 size_reg = bh->ci->window_tab_32bit[window].size_reg;
689 base_bits = bh->ci->window_tab_32bit[window].base_bits;
690 size_bits = bh->ci->window_tab_32bit[window].size_bits;
691 map_to_field = bh->ci->window_tab_32bit[window].map_to_field;
692
693 val = map_to_field(base, base_bits) | other_bits;
694 mv64x60_write(bh, base_reg, val);
695
696 if (size_reg != 0) {
697 val = bh->ci->translate_size(base, size, size_bits);
698 val = map_to_field(val, size_bits);
699 mv64x60_write(bh, size_reg, val);
700 }
701
702 (void)mv64x60_read(bh, base_reg); /* Flush FIFO */
703 }
704 }
705
706 /*
707 * mv64x60_get_64bit_window()
708 *
709 * Determine the base address and size of a 64-bit window on the bridge.
710 */
711 void __init
712 mv64x60_get_64bit_window(struct mv64x60_handle *bh, u32 window,
713 u32 *base_hi, u32 *base_lo, u32 *size)
714 {
715 u32 val, base_lo_reg, size_reg, base_lo_bits, size_bits;
716 u32 (*get_from_field)(u32 val, u32 num_bits);
717
718 base_lo_reg = bh->ci->window_tab_64bit[window].base_lo_reg;
719
720 if (base_lo_reg != 0) {
721 size_reg = bh->ci->window_tab_64bit[window].size_reg;
722 base_lo_bits = bh->ci->window_tab_64bit[window].base_lo_bits;
723 size_bits = bh->ci->window_tab_64bit[window].size_bits;
724 get_from_field= bh->ci->window_tab_64bit[window].get_from_field;
725
726 *base_hi = mv64x60_read(bh,
727 bh->ci->window_tab_64bit[window].base_hi_reg);
728
729 val = mv64x60_read(bh, base_lo_reg);
730 *base_lo = get_from_field(val, base_lo_bits);
731
732 if (size_reg != 0) {
733 val = mv64x60_read(bh, size_reg);
734 val = get_from_field(val, size_bits);
735 *size = bh->ci->untranslate_size(*base_lo, val,
736 size_bits);
737 } else
738 *size = 0;
739 } else {
740 *base_hi = 0;
741 *base_lo = 0;
742 *size = 0;
743 }
744
745 pr_debug("get 64bit window: %d, base hi: 0x%x, base lo: 0x%x, "
746 "size: 0x%x\n", window, *base_hi, *base_lo, *size);
747 }
748
749 /*
750 * mv64x60_set_64bit_window()
751 *
752 * Set the base address and size of a 64-bit window on the bridge.
753 */
754 void __init
755 mv64x60_set_64bit_window(struct mv64x60_handle *bh, u32 window,
756 u32 base_hi, u32 base_lo, u32 size, u32 other_bits)
757 {
758 u32 val, base_lo_reg, size_reg, base_lo_bits, size_bits;
759 u32 (*map_to_field)(u32 val, u32 num_bits);
760
761 pr_debug("set 64bit window: %d, base hi: 0x%x, base lo: 0x%x, "
762 "size: 0x%x, other: 0x%x\n",
763 window, base_hi, base_lo, size, other_bits);
764
765 base_lo_reg = bh->ci->window_tab_64bit[window].base_lo_reg;
766
767 if (base_lo_reg != 0) {
768 size_reg = bh->ci->window_tab_64bit[window].size_reg;
769 base_lo_bits = bh->ci->window_tab_64bit[window].base_lo_bits;
770 size_bits = bh->ci->window_tab_64bit[window].size_bits;
771 map_to_field = bh->ci->window_tab_64bit[window].map_to_field;
772
773 mv64x60_write(bh, bh->ci->window_tab_64bit[window].base_hi_reg,
774 base_hi);
775
776 val = map_to_field(base_lo, base_lo_bits) | other_bits;
777 mv64x60_write(bh, base_lo_reg, val);
778
779 if (size_reg != 0) {
780 val = bh->ci->translate_size(base_lo, size, size_bits);
781 val = map_to_field(val, size_bits);
782 mv64x60_write(bh, size_reg, val);
783 }
784
785 (void)mv64x60_read(bh, base_lo_reg); /* Flush FIFO */
786 }
787 }
788
789 /*
790 * mv64x60_mask()
791 *
792 * Take the high-order 'num_bits' of 'val' & mask off low bits.
793 */
794 u32 __init
795 mv64x60_mask(u32 val, u32 num_bits)
796 {
797 return val & (0xffffffff << (32 - num_bits));
798 }
799
800 /*
801 * mv64x60_shift_left()
802 *
803 * Take the low-order 'num_bits' of 'val', shift left to align at bit 31 (MSB).
804 */
805 u32 __init
806 mv64x60_shift_left(u32 val, u32 num_bits)
807 {
808 return val << (32 - num_bits);
809 }
810
811 /*
812 * mv64x60_shift_right()
813 *
814 * Take the high-order 'num_bits' of 'val', shift right to align at bit 0 (LSB).
815 */
816 u32 __init
817 mv64x60_shift_right(u32 val, u32 num_bits)
818 {
819 return val >> (32 - num_bits);
820 }
821
822 /*
823 *****************************************************************************
824 *
825 * Chip Identification Routines
826 *
827 *****************************************************************************
828 */
829 /*
830 * mv64x60_get_type()
831 *
832 * Determine the type of bridge chip we have.
833 */
834 int __init
835 mv64x60_get_type(struct mv64x60_handle *bh)
836 {
837 struct pci_controller hose;
838 u16 val;
839 u8 save_exclude;
840
841 memset(&hose, 0, sizeof(hose));
842 setup_indirect_pci_nomap(&hose, bh->v_base + MV64x60_PCI0_CONFIG_ADDR,
843 bh->v_base + MV64x60_PCI0_CONFIG_DATA);
844
845 save_exclude = mv64x60_pci_exclude_bridge;
846 mv64x60_pci_exclude_bridge = 0;
847 /* Sanity check of bridge's Vendor ID */
848 early_read_config_word(&hose, 0, PCI_DEVFN(0, 0), PCI_VENDOR_ID, &val);
849
850 if (val != PCI_VENDOR_ID_MARVELL) {
851 mv64x60_pci_exclude_bridge = save_exclude;
852 return -1;
853 }
854
855 /* Get the revision of the chip */
856 early_read_config_word(&hose, 0, PCI_DEVFN(0, 0), PCI_CLASS_REVISION,
857 &val);
858 bh->rev = (u32)(val & 0xff);
859
860 /* Figure out the type of Marvell bridge it is */
861 early_read_config_word(&hose, 0, PCI_DEVFN(0, 0), PCI_DEVICE_ID, &val);
862 mv64x60_pci_exclude_bridge = save_exclude;
863
864 switch (val) {
865 case PCI_DEVICE_ID_MARVELL_GT64260:
866 switch (bh->rev) {
867 case GT64260_REV_A:
868 bh->type = MV64x60_TYPE_GT64260A;
869 break;
870
871 default:
872 printk(KERN_WARNING "Unsupported GT64260 rev %04x\n",
873 bh->rev);
874 /* Assume its similar to a 'B' rev and fallthru */
875 case GT64260_REV_B:
876 bh->type = MV64x60_TYPE_GT64260B;
877 break;
878 }
879 break;
880
881 case PCI_DEVICE_ID_MARVELL_MV64360:
882 /* Marvell won't tell me how to distinguish a 64361 & 64362 */
883 bh->type = MV64x60_TYPE_MV64360;
884 break;
885
886 case PCI_DEVICE_ID_MARVELL_MV64460:
887 bh->type = MV64x60_TYPE_MV64460;
888 break;
889
890 default:
891 printk(KERN_ERR "Unknown Marvell bridge type %04x\n", val);
892 return -1;
893 }
894
895 /* Hang onto bridge type & rev for PIC code */
896 mv64x60_bridge_type = bh->type;
897 mv64x60_bridge_rev = bh->rev;
898
899 return 0;
900 }
901
902 /*
903 * mv64x60_setup_for_chip()
904 *
905 * Set 'bh' to use the proper set of routine for the bridge chip that we have.
906 */
907 int __init
908 mv64x60_setup_for_chip(struct mv64x60_handle *bh)
909 {
910 int rc = 0;
911
912 /* Set up chip-specific info based on the chip/bridge type */
913 switch(bh->type) {
914 case MV64x60_TYPE_GT64260A:
915 bh->ci = &gt64260a_ci;
916 break;
917
918 case MV64x60_TYPE_GT64260B:
919 bh->ci = &gt64260b_ci;
920 break;
921
922 case MV64x60_TYPE_MV64360:
923 bh->ci = &mv64360_ci;
924 break;
925
926 case MV64x60_TYPE_MV64460:
927 bh->ci = &mv64460_ci;
928 break;
929
930 case MV64x60_TYPE_INVALID:
931 default:
932 if (ppc_md.progress)
933 ppc_md.progress("mv64x60: Unsupported bridge", 0x0);
934 printk(KERN_ERR "mv64x60: Unsupported bridge\n");
935 rc = -1;
936 }
937
938 return rc;
939 }
940
941 /*
942 * mv64x60_get_bridge_vbase()
943 *
944 * Return the virtual address of the bridge's registers.
945 */
946 void __iomem *
947 mv64x60_get_bridge_vbase(void)
948 {
949 return mv64x60_bridge_vbase;
950 }
951
952 /*
953 * mv64x60_get_bridge_type()
954 *
955 * Return the type of bridge on the platform.
956 */
957 u32
958 mv64x60_get_bridge_type(void)
959 {
960 return mv64x60_bridge_type;
961 }
962
963 /*
964 * mv64x60_get_bridge_rev()
965 *
966 * Return the revision of the bridge on the platform.
967 */
968 u32
969 mv64x60_get_bridge_rev(void)
970 {
971 return mv64x60_bridge_rev;
972 }
973
974 /*
975 *****************************************************************************
976 *
977 * System Memory Window Related Routines
978 *
979 *****************************************************************************
980 */
981 /*
982 * mv64x60_get_mem_size()
983 *
984 * Calculate the amount of memory that the memory controller is set up for.
985 * This should only be used by board-specific code if there is no other
986 * way to determine the amount of memory in the system.
987 */
988 u32 __init
989 mv64x60_get_mem_size(u32 bridge_base, u32 chip_type)
990 {
991 struct mv64x60_handle bh;
992 u32 mem_windows[MV64x60_CPU2MEM_WINDOWS][2];
993 u32 rc = 0;
994
995 memset(&bh, 0, sizeof(bh));
996
997 bh.type = chip_type;
998 bh.v_base = (void *)bridge_base;
999
1000 if (!mv64x60_setup_for_chip(&bh)) {
1001 mv64x60_get_mem_windows(&bh, mem_windows);
1002 rc = mv64x60_calc_mem_size(&bh, mem_windows);
1003 }
1004
1005 return rc;
1006 }
1007
1008 /*
1009 * mv64x60_get_mem_windows()
1010 *
1011 * Get the values in the memory controller & return in the 'mem_windows' array.
1012 */
1013 void __init
1014 mv64x60_get_mem_windows(struct mv64x60_handle *bh,
1015 u32 mem_windows[MV64x60_CPU2MEM_WINDOWS][2])
1016 {
1017 u32 i, win;
1018
1019 for (win=MV64x60_CPU2MEM_0_WIN,i=0;win<=MV64x60_CPU2MEM_3_WIN;win++,i++)
1020 if (bh->ci->is_enabled_32bit(bh, win))
1021 mv64x60_get_32bit_window(bh, win,
1022 &mem_windows[i][0], &mem_windows[i][1]);
1023 else {
1024 mem_windows[i][0] = 0;
1025 mem_windows[i][1] = 0;
1026 }
1027 }
1028
1029 /*
1030 * mv64x60_calc_mem_size()
1031 *
1032 * Using the memory controller register values in 'mem_windows', determine
1033 * how much memory it is set up for.
1034 */
1035 u32 __init
1036 mv64x60_calc_mem_size(struct mv64x60_handle *bh,
1037 u32 mem_windows[MV64x60_CPU2MEM_WINDOWS][2])
1038 {
1039 u32 i, total = 0;
1040
1041 for (i=0; i<MV64x60_CPU2MEM_WINDOWS; i++)
1042 total += mem_windows[i][1];
1043
1044 return total;
1045 }
1046
1047 /*
1048 *****************************************************************************
1049 *
1050 * CPU->System MEM, PCI Config Routines
1051 *
1052 *****************************************************************************
1053 */
1054 /*
1055 * mv64x60_config_cpu2mem_windows()
1056 *
1057 * Configure CPU->Memory windows on the bridge.
1058 */
1059 static u32 prot_tab[] __initdata = {
1060 MV64x60_CPU_PROT_0_WIN, MV64x60_CPU_PROT_1_WIN,
1061 MV64x60_CPU_PROT_2_WIN, MV64x60_CPU_PROT_3_WIN
1062 };
1063
1064 static u32 cpu_snoop_tab[] __initdata = {
1065 MV64x60_CPU_SNOOP_0_WIN, MV64x60_CPU_SNOOP_1_WIN,
1066 MV64x60_CPU_SNOOP_2_WIN, MV64x60_CPU_SNOOP_3_WIN
1067 };
1068
1069 void __init
1070 mv64x60_config_cpu2mem_windows(struct mv64x60_handle *bh,
1071 struct mv64x60_setup_info *si,
1072 u32 mem_windows[MV64x60_CPU2MEM_WINDOWS][2])
1073 {
1074 u32 i, win;
1075
1076 /* Set CPU protection & snoop windows */
1077 for (win=MV64x60_CPU2MEM_0_WIN,i=0;win<=MV64x60_CPU2MEM_3_WIN;win++,i++)
1078 if (bh->ci->is_enabled_32bit(bh, win)) {
1079 mv64x60_set_32bit_window(bh, prot_tab[i],
1080 mem_windows[i][0], mem_windows[i][1],
1081 si->cpu_prot_options[i]);
1082 bh->ci->enable_window_32bit(bh, prot_tab[i]);
1083
1084 if (bh->ci->window_tab_32bit[cpu_snoop_tab[i]].
1085 base_reg != 0) {
1086 mv64x60_set_32bit_window(bh, cpu_snoop_tab[i],
1087 mem_windows[i][0], mem_windows[i][1],
1088 si->cpu_snoop_options[i]);
1089 bh->ci->enable_window_32bit(bh,
1090 cpu_snoop_tab[i]);
1091 }
1092
1093 }
1094 }
1095
1096 /*
1097 * mv64x60_config_cpu2pci_windows()
1098 *
1099 * Configure the CPU->PCI windows for one of the PCI buses.
1100 */
1101 static u32 win_tab[2][4] __initdata = {
1102 { MV64x60_CPU2PCI0_IO_WIN, MV64x60_CPU2PCI0_MEM_0_WIN,
1103 MV64x60_CPU2PCI0_MEM_1_WIN, MV64x60_CPU2PCI0_MEM_2_WIN },
1104 { MV64x60_CPU2PCI1_IO_WIN, MV64x60_CPU2PCI1_MEM_0_WIN,
1105 MV64x60_CPU2PCI1_MEM_1_WIN, MV64x60_CPU2PCI1_MEM_2_WIN },
1106 };
1107
1108 static u32 remap_tab[2][4] __initdata = {
1109 { MV64x60_CPU2PCI0_IO_REMAP_WIN, MV64x60_CPU2PCI0_MEM_0_REMAP_WIN,
1110 MV64x60_CPU2PCI0_MEM_1_REMAP_WIN, MV64x60_CPU2PCI0_MEM_2_REMAP_WIN },
1111 { MV64x60_CPU2PCI1_IO_REMAP_WIN, MV64x60_CPU2PCI1_MEM_0_REMAP_WIN,
1112 MV64x60_CPU2PCI1_MEM_1_REMAP_WIN, MV64x60_CPU2PCI1_MEM_2_REMAP_WIN }
1113 };
1114
1115 void __init
1116 mv64x60_config_cpu2pci_windows(struct mv64x60_handle *bh,
1117 struct mv64x60_pci_info *pi, u32 bus)
1118 {
1119 int i;
1120
1121 if (pi->pci_io.size > 0) {
1122 mv64x60_set_32bit_window(bh, win_tab[bus][0],
1123 pi->pci_io.cpu_base, pi->pci_io.size, pi->pci_io.swap);
1124 mv64x60_set_32bit_window(bh, remap_tab[bus][0],
1125 pi->pci_io.pci_base_lo, 0, 0);
1126 bh->ci->enable_window_32bit(bh, win_tab[bus][0]);
1127 } else /* Actually, the window should already be disabled */
1128 bh->ci->disable_window_32bit(bh, win_tab[bus][0]);
1129
1130 for (i=0; i<3; i++)
1131 if (pi->pci_mem[i].size > 0) {
1132 mv64x60_set_32bit_window(bh, win_tab[bus][i+1],
1133 pi->pci_mem[i].cpu_base, pi->pci_mem[i].size,
1134 pi->pci_mem[i].swap);
1135 mv64x60_set_64bit_window(bh, remap_tab[bus][i+1],
1136 pi->pci_mem[i].pci_base_hi,
1137 pi->pci_mem[i].pci_base_lo, 0, 0);
1138 bh->ci->enable_window_32bit(bh, win_tab[bus][i+1]);
1139 } else /* Actually, the window should already be disabled */
1140 bh->ci->disable_window_32bit(bh, win_tab[bus][i+1]);
1141 }
1142
1143 /*
1144 *****************************************************************************
1145 *
1146 * PCI->System MEM Config Routines
1147 *
1148 *****************************************************************************
1149 */
1150 /*
1151 * mv64x60_config_pci2mem_windows()
1152 *
1153 * Configure the PCI->Memory windows on the bridge.
1154 */
1155 static u32 pci_acc_tab[2][4] __initdata = {
1156 { MV64x60_PCI02MEM_ACC_CNTL_0_WIN, MV64x60_PCI02MEM_ACC_CNTL_1_WIN,
1157 MV64x60_PCI02MEM_ACC_CNTL_2_WIN, MV64x60_PCI02MEM_ACC_CNTL_3_WIN },
1158 { MV64x60_PCI12MEM_ACC_CNTL_0_WIN, MV64x60_PCI12MEM_ACC_CNTL_1_WIN,
1159 MV64x60_PCI12MEM_ACC_CNTL_2_WIN, MV64x60_PCI12MEM_ACC_CNTL_3_WIN }
1160 };
1161
1162 static u32 pci_snoop_tab[2][4] __initdata = {
1163 { MV64x60_PCI02MEM_SNOOP_0_WIN, MV64x60_PCI02MEM_SNOOP_1_WIN,
1164 MV64x60_PCI02MEM_SNOOP_2_WIN, MV64x60_PCI02MEM_SNOOP_3_WIN },
1165 { MV64x60_PCI12MEM_SNOOP_0_WIN, MV64x60_PCI12MEM_SNOOP_1_WIN,
1166 MV64x60_PCI12MEM_SNOOP_2_WIN, MV64x60_PCI12MEM_SNOOP_3_WIN }
1167 };
1168
1169 static u32 pci_size_tab[2][4] __initdata = {
1170 { MV64x60_PCI0_MEM_0_SIZE, MV64x60_PCI0_MEM_1_SIZE,
1171 MV64x60_PCI0_MEM_2_SIZE, MV64x60_PCI0_MEM_3_SIZE },
1172 { MV64x60_PCI1_MEM_0_SIZE, MV64x60_PCI1_MEM_1_SIZE,
1173 MV64x60_PCI1_MEM_2_SIZE, MV64x60_PCI1_MEM_3_SIZE }
1174 };
1175
1176 void __init
1177 mv64x60_config_pci2mem_windows(struct mv64x60_handle *bh,
1178 struct pci_controller *hose, struct mv64x60_pci_info *pi,
1179 u32 bus, u32 mem_windows[MV64x60_CPU2MEM_WINDOWS][2])
1180 {
1181 u32 i, win;
1182
1183 /*
1184 * Set the access control, snoop, BAR size, and window base addresses.
1185 * PCI->MEM windows base addresses will match exactly what the
1186 * CPU->MEM windows are.
1187 */
1188 for (win=MV64x60_CPU2MEM_0_WIN,i=0;win<=MV64x60_CPU2MEM_3_WIN;win++,i++)
1189 if (bh->ci->is_enabled_32bit(bh, win)) {
1190 mv64x60_set_64bit_window(bh,
1191 pci_acc_tab[bus][i], 0,
1192 mem_windows[i][0], mem_windows[i][1],
1193 pi->acc_cntl_options[i]);
1194 bh->ci->enable_window_64bit(bh, pci_acc_tab[bus][i]);
1195
1196 if (bh->ci->window_tab_64bit[
1197 pci_snoop_tab[bus][i]].base_lo_reg != 0) {
1198
1199 mv64x60_set_64bit_window(bh,
1200 pci_snoop_tab[bus][i], 0,
1201 mem_windows[i][0], mem_windows[i][1],
1202 pi->snoop_options[i]);
1203 bh->ci->enable_window_64bit(bh,
1204 pci_snoop_tab[bus][i]);
1205 }
1206
1207 bh->ci->set_pci2mem_window(hose, bus, i,
1208 mem_windows[i][0]);
1209 mv64x60_write(bh, pci_size_tab[bus][i],
1210 mv64x60_mask(mem_windows[i][1] - 1, 20));
1211
1212 /* Enable the window */
1213 mv64x60_clr_bits(bh, ((bus == 0) ?
1214 MV64x60_PCI0_BAR_ENABLE :
1215 MV64x60_PCI1_BAR_ENABLE), (1 << i));
1216 }
1217 }
1218
1219 /*
1220 *****************************************************************************
1221 *
1222 * Hose & Resource Alloc/Init Routines
1223 *
1224 *****************************************************************************
1225 */
1226 /*
1227 * mv64x60_alloc_hoses()
1228 *
1229 * Allocate the PCI hose structures for the bridge's PCI buses.
1230 */
1231 void __init
1232 mv64x60_alloc_hose(struct mv64x60_handle *bh, u32 cfg_addr, u32 cfg_data,
1233 struct pci_controller **hose)
1234 {
1235 *hose = pcibios_alloc_controller();
1236 setup_indirect_pci_nomap(*hose, bh->v_base + cfg_addr,
1237 bh->v_base + cfg_data);
1238 }
1239
1240 /*
1241 * mv64x60_config_resources()
1242 *
1243 * Calculate the offsets, etc. for the hose structures to reflect all of
1244 * the address remapping that happens as you go from CPU->PCI and PCI->MEM.
1245 */
1246 void __init
1247 mv64x60_config_resources(struct pci_controller *hose,
1248 struct mv64x60_pci_info *pi, u32 io_base)
1249 {
1250 int i;
1251 /* 2 hoses; 4 resources/hose; string <= 64 bytes */
1252 static char s[2][4][64];
1253
1254 if (pi->pci_io.size != 0) {
1255 sprintf(s[hose->index][0], "PCI hose %d I/O Space",
1256 hose->index);
1257 pci_init_resource(&hose->io_resource, io_base - isa_io_base,
1258 io_base - isa_io_base + pi->pci_io.size - 1,
1259 IORESOURCE_IO, s[hose->index][0]);
1260 hose->io_space.start = pi->pci_io.pci_base_lo;
1261 hose->io_space.end = pi->pci_io.pci_base_lo + pi->pci_io.size-1;
1262 hose->io_base_phys = pi->pci_io.cpu_base;
1263 hose->io_base_virt = (void *)isa_io_base;
1264 }
1265
1266 for (i=0; i<3; i++)
1267 if (pi->pci_mem[i].size != 0) {
1268 sprintf(s[hose->index][i+1], "PCI hose %d MEM Space %d",
1269 hose->index, i);
1270 pci_init_resource(&hose->mem_resources[i],
1271 pi->pci_mem[i].cpu_base,
1272 pi->pci_mem[i].cpu_base + pi->pci_mem[i].size-1,
1273 IORESOURCE_MEM, s[hose->index][i+1]);
1274 }
1275
1276 hose->mem_space.end = pi->pci_mem[0].pci_base_lo +
1277 pi->pci_mem[0].size - 1;
1278 hose->pci_mem_offset = pi->pci_mem[0].cpu_base -
1279 pi->pci_mem[0].pci_base_lo;
1280 }
1281
1282 /*
1283 * mv64x60_config_pci_params()
1284 *
1285 * Configure a hose's PCI config space parameters.
1286 */
1287 void __init
1288 mv64x60_config_pci_params(struct pci_controller *hose,
1289 struct mv64x60_pci_info *pi)
1290 {
1291 u32 devfn;
1292 u16 u16_val;
1293 u8 save_exclude;
1294
1295 devfn = PCI_DEVFN(0,0);
1296
1297 save_exclude = mv64x60_pci_exclude_bridge;
1298 mv64x60_pci_exclude_bridge = 0;
1299
1300 /* Set class code to indicate host bridge */
1301 u16_val = PCI_CLASS_BRIDGE_HOST; /* 0x0600 (host bridge) */
1302 early_write_config_word(hose, 0, devfn, PCI_CLASS_DEVICE, u16_val);
1303
1304 /* Enable bridge to be PCI master & respond to PCI MEM cycles */
1305 early_read_config_word(hose, 0, devfn, PCI_COMMAND, &u16_val);
1306 u16_val &= ~(PCI_COMMAND_IO | PCI_COMMAND_INVALIDATE |
1307 PCI_COMMAND_PARITY | PCI_COMMAND_SERR | PCI_COMMAND_FAST_BACK);
1308 u16_val |= pi->pci_cmd_bits | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
1309 early_write_config_word(hose, 0, devfn, PCI_COMMAND, u16_val);
1310
1311 /* Set latency timer, cache line size, clear BIST */
1312 u16_val = (pi->latency_timer << 8) | (L1_CACHE_BYTES >> 2);
1313 early_write_config_word(hose, 0, devfn, PCI_CACHE_LINE_SIZE, u16_val);
1314
1315 mv64x60_pci_exclude_bridge = save_exclude;
1316 }
1317
1318 /*
1319 *****************************************************************************
1320 *
1321 * PCI Related Routine
1322 *
1323 *****************************************************************************
1324 */
1325 /*
1326 * mv64x60_set_bus()
1327 *
1328 * Set the bus number for the hose directly under the bridge.
1329 */
1330 void __init
1331 mv64x60_set_bus(struct mv64x60_handle *bh, u32 bus, u32 child_bus)
1332 {
1333 struct pci_controller *hose;
1334 u32 pci_mode, p2p_cfg, pci_cfg_offset, val;
1335 u8 save_exclude;
1336
1337 if (bus == 0) {
1338 pci_mode = bh->pci_mode_a;
1339 p2p_cfg = MV64x60_PCI0_P2P_CONFIG;
1340 pci_cfg_offset = 0x64;
1341 hose = bh->hose_a;
1342 } else {
1343 pci_mode = bh->pci_mode_b;
1344 p2p_cfg = MV64x60_PCI1_P2P_CONFIG;
1345 pci_cfg_offset = 0xe4;
1346 hose = bh->hose_b;
1347 }
1348
1349 child_bus &= 0xff;
1350 val = mv64x60_read(bh, p2p_cfg);
1351
1352 if (pci_mode == MV64x60_PCIMODE_CONVENTIONAL) {
1353 val &= 0xe0000000; /* Force dev num to 0, turn off P2P bridge */
1354 val |= (child_bus << 16) | 0xff;
1355 mv64x60_write(bh, p2p_cfg, val);
1356 (void)mv64x60_read(bh, p2p_cfg); /* Flush FIFO */
1357 } else { /* PCI-X */
1358 /*
1359 * Need to use the current bus/dev number (that's in the
1360 * P2P CONFIG reg) to access the bridge's pci config space.
1361 */
1362 save_exclude = mv64x60_pci_exclude_bridge;
1363 mv64x60_pci_exclude_bridge = 0;
1364 early_write_config_dword(hose, (val & 0x00ff0000) >> 16,
1365 PCI_DEVFN(((val & 0x1f000000) >> 24), 0),
1366 pci_cfg_offset, child_bus << 8);
1367 mv64x60_pci_exclude_bridge = save_exclude;
1368 }
1369 }
1370
1371 /*
1372 * mv64x60_pci_exclude_device()
1373 *
1374 * This routine is used to make the bridge not appear when the
1375 * PCI subsystem is accessing PCI devices (in PCI config space).
1376 */
1377 int
1378 mv64x60_pci_exclude_device(u8 bus, u8 devfn)
1379 {
1380 struct pci_controller *hose;
1381
1382 hose = pci_bus_to_hose(bus);
1383
1384 /* Skip slot 0 on both hoses */
1385 if ((mv64x60_pci_exclude_bridge == 1) && (PCI_SLOT(devfn) == 0) &&
1386 (hose->first_busno == bus))
1387
1388 return PCIBIOS_DEVICE_NOT_FOUND;
1389 else
1390 return PCIBIOS_SUCCESSFUL;
1391 } /* mv64x60_pci_exclude_device() */
1392
1393 /*
1394 *****************************************************************************
1395 *
1396 * Platform Device Routines
1397 *
1398 *****************************************************************************
1399 */
1400
1401 /*
1402 * mv64x60_pd_fixup()
1403 *
1404 * Need to add the base addr of where the bridge's regs are mapped in the
1405 * physical addr space so drivers can ioremap() them.
1406 */
1407 void __init
1408 mv64x60_pd_fixup(struct mv64x60_handle *bh, struct platform_device *pd_devs[],
1409 u32 entries)
1410 {
1411 struct resource *r;
1412 u32 i, j;
1413
1414 for (i=0; i<entries; i++) {
1415 j = 0;
1416
1417 while ((r = platform_get_resource(pd_devs[i],IORESOURCE_MEM,j))
1418 != NULL) {
1419
1420 r->start += bh->p_base;
1421 r->end += bh->p_base;
1422 j++;
1423 }
1424 }
1425 }
1426
1427 /*
1428 * mv64x60_add_pds()
1429 *
1430 * Add the mv64x60 platform devices to the list of platform devices.
1431 */
1432 static int __init
1433 mv64x60_add_pds(void)
1434 {
1435 return platform_add_devices(mv64x60_pd_devs,
1436 ARRAY_SIZE(mv64x60_pd_devs));
1437 }
1438 arch_initcall(mv64x60_add_pds);
1439
1440 /*
1441 *****************************************************************************
1442 *
1443 * GT64260-Specific Routines
1444 *
1445 *****************************************************************************
1446 */
1447 /*
1448 * gt64260_translate_size()
1449 *
1450 * On the GT64260, the size register is really the "top" address of the window.
1451 */
1452 static u32 __init
1453 gt64260_translate_size(u32 base, u32 size, u32 num_bits)
1454 {
1455 return base + mv64x60_mask(size - 1, num_bits);
1456 }
1457
1458 /*
1459 * gt64260_untranslate_size()
1460 *
1461 * Translate the top address of a window into a window size.
1462 */
1463 static u32 __init
1464 gt64260_untranslate_size(u32 base, u32 size, u32 num_bits)
1465 {
1466 if (size >= base)
1467 size = size - base + (1 << (32 - num_bits));
1468 else
1469 size = 0;
1470
1471 return size;
1472 }
1473
1474 /*
1475 * gt64260_set_pci2mem_window()
1476 *
1477 * The PCI->MEM window registers are actually in PCI config space so need
1478 * to set them by setting the correct config space BARs.
1479 */
1480 static u32 gt64260_reg_addrs[2][4] __initdata = {
1481 { 0x10, 0x14, 0x18, 0x1c }, { 0x90, 0x94, 0x98, 0x9c }
1482 };
1483
1484 static void __init
1485 gt64260_set_pci2mem_window(struct pci_controller *hose, u32 bus, u32 window,
1486 u32 base)
1487 {
1488 u8 save_exclude;
1489
1490 pr_debug("set pci->mem window: %d, hose: %d, base: 0x%x\n", window,
1491 hose->index, base);
1492
1493 save_exclude = mv64x60_pci_exclude_bridge;
1494 mv64x60_pci_exclude_bridge = 0;
1495 early_write_config_dword(hose, 0, PCI_DEVFN(0, 0),
1496 gt64260_reg_addrs[bus][window], mv64x60_mask(base, 20) | 0x8);
1497 mv64x60_pci_exclude_bridge = save_exclude;
1498 }
1499
1500 /*
1501 * gt64260_set_pci2regs_window()
1502 *
1503 * Set where the bridge's registers appear in PCI MEM space.
1504 */
1505 static u32 gt64260_offset[2] __initdata = {0x20, 0xa0};
1506
1507 static void __init
1508 gt64260_set_pci2regs_window(struct mv64x60_handle *bh,
1509 struct pci_controller *hose, u32 bus, u32 base)
1510 {
1511 u8 save_exclude;
1512
1513 pr_debug("set pci->internal regs hose: %d, base: 0x%x\n", hose->index,
1514 base);
1515
1516 save_exclude = mv64x60_pci_exclude_bridge;
1517 mv64x60_pci_exclude_bridge = 0;
1518 early_write_config_dword(hose, 0, PCI_DEVFN(0,0), gt64260_offset[bus],
1519 (base << 16));
1520 mv64x60_pci_exclude_bridge = save_exclude;
1521 }
1522
1523 /*
1524 * gt64260_is_enabled_32bit()
1525 *
1526 * On a GT64260, a window is enabled iff its top address is >= to its base
1527 * address.
1528 */
1529 static u32 __init
1530 gt64260_is_enabled_32bit(struct mv64x60_handle *bh, u32 window)
1531 {
1532 u32 rc = 0;
1533
1534 if ((gt64260_32bit_windows[window].base_reg != 0) &&
1535 (gt64260_32bit_windows[window].size_reg != 0) &&
1536 ((mv64x60_read(bh, gt64260_32bit_windows[window].size_reg) &
1537 ((1 << gt64260_32bit_windows[window].size_bits) - 1)) >=
1538 (mv64x60_read(bh, gt64260_32bit_windows[window].base_reg) &
1539 ((1 << gt64260_32bit_windows[window].base_bits) - 1))))
1540
1541 rc = 1;
1542
1543 return rc;
1544 }
1545
1546 /*
1547 * gt64260_enable_window_32bit()
1548 *
1549 * On the GT64260, a window is enabled iff the top address is >= to the base
1550 * address of the window. Since the window has already been configured by
1551 * the time this routine is called, we have nothing to do here.
1552 */
1553 static void __init
1554 gt64260_enable_window_32bit(struct mv64x60_handle *bh, u32 window)
1555 {
1556 pr_debug("enable 32bit window: %d\n", window);
1557 }
1558
1559 /*
1560 * gt64260_disable_window_32bit()
1561 *
1562 * On a GT64260, you disable a window by setting its top address to be less
1563 * than its base address.
1564 */
1565 static void __init
1566 gt64260_disable_window_32bit(struct mv64x60_handle *bh, u32 window)
1567 {
1568 pr_debug("disable 32bit window: %d, base_reg: 0x%x, size_reg: 0x%x\n",
1569 window, gt64260_32bit_windows[window].base_reg,
1570 gt64260_32bit_windows[window].size_reg);
1571
1572 if ((gt64260_32bit_windows[window].base_reg != 0) &&
1573 (gt64260_32bit_windows[window].size_reg != 0)) {
1574
1575 /* To disable, make bottom reg higher than top reg */
1576 mv64x60_write(bh, gt64260_32bit_windows[window].base_reg,0xfff);
1577 mv64x60_write(bh, gt64260_32bit_windows[window].size_reg, 0);
1578 }
1579 }
1580
1581 /*
1582 * gt64260_enable_window_64bit()
1583 *
1584 * On the GT64260, a window is enabled iff the top address is >= to the base
1585 * address of the window. Since the window has already been configured by
1586 * the time this routine is called, we have nothing to do here.
1587 */
1588 static void __init
1589 gt64260_enable_window_64bit(struct mv64x60_handle *bh, u32 window)
1590 {
1591 pr_debug("enable 64bit window: %d\n", window);
1592 }
1593
1594 /*
1595 * gt64260_disable_window_64bit()
1596 *
1597 * On a GT64260, you disable a window by setting its top address to be less
1598 * than its base address.
1599 */
1600 static void __init
1601 gt64260_disable_window_64bit(struct mv64x60_handle *bh, u32 window)
1602 {
1603 pr_debug("disable 64bit window: %d, base_reg: 0x%x, size_reg: 0x%x\n",
1604 window, gt64260_64bit_windows[window].base_lo_reg,
1605 gt64260_64bit_windows[window].size_reg);
1606
1607 if ((gt64260_64bit_windows[window].base_lo_reg != 0) &&
1608 (gt64260_64bit_windows[window].size_reg != 0)) {
1609
1610 /* To disable, make bottom reg higher than top reg */
1611 mv64x60_write(bh, gt64260_64bit_windows[window].base_lo_reg,
1612 0xfff);
1613 mv64x60_write(bh, gt64260_64bit_windows[window].base_hi_reg, 0);
1614 mv64x60_write(bh, gt64260_64bit_windows[window].size_reg, 0);
1615 }
1616 }
1617
1618 /*
1619 * gt64260_disable_all_windows()
1620 *
1621 * The GT64260 has several windows that aren't represented in the table of
1622 * windows at the top of this file. This routine turns all of them off
1623 * except for the memory controller windows, of course.
1624 */
1625 static void __init
1626 gt64260_disable_all_windows(struct mv64x60_handle *bh,
1627 struct mv64x60_setup_info *si)
1628 {
1629 u32 i, preserve;
1630
1631 /* Disable 32bit windows (don't disable cpu->mem windows) */
1632 for (i=MV64x60_CPU2DEV_0_WIN; i<MV64x60_32BIT_WIN_COUNT; i++) {
1633 if (i < 32)
1634 preserve = si->window_preserve_mask_32_lo & (1 << i);
1635 else
1636 preserve = si->window_preserve_mask_32_hi & (1<<(i-32));
1637
1638 if (!preserve)
1639 gt64260_disable_window_32bit(bh, i);
1640 }
1641
1642 /* Disable 64bit windows */
1643 for (i=0; i<MV64x60_64BIT_WIN_COUNT; i++)
1644 if (!(si->window_preserve_mask_64 & (1<<i)))
1645 gt64260_disable_window_64bit(bh, i);
1646
1647 /* Turn off cpu protection windows not in gt64260_32bit_windows[] */
1648 mv64x60_write(bh, GT64260_CPU_PROT_BASE_4, 0xfff);
1649 mv64x60_write(bh, GT64260_CPU_PROT_SIZE_4, 0);
1650 mv64x60_write(bh, GT64260_CPU_PROT_BASE_5, 0xfff);
1651 mv64x60_write(bh, GT64260_CPU_PROT_SIZE_5, 0);
1652 mv64x60_write(bh, GT64260_CPU_PROT_BASE_6, 0xfff);
1653 mv64x60_write(bh, GT64260_CPU_PROT_SIZE_6, 0);
1654 mv64x60_write(bh, GT64260_CPU_PROT_BASE_7, 0xfff);
1655 mv64x60_write(bh, GT64260_CPU_PROT_SIZE_7, 0);
1656
1657 /* Turn off PCI->MEM access cntl wins not in gt64260_64bit_windows[] */
1658 mv64x60_write(bh, MV64x60_PCI0_ACC_CNTL_4_BASE_LO, 0xfff);
1659 mv64x60_write(bh, MV64x60_PCI0_ACC_CNTL_4_BASE_HI, 0);
1660 mv64x60_write(bh, MV64x60_PCI0_ACC_CNTL_4_SIZE, 0);
1661 mv64x60_write(bh, MV64x60_PCI0_ACC_CNTL_5_BASE_LO, 0xfff);
1662 mv64x60_write(bh, MV64x60_PCI0_ACC_CNTL_5_BASE_HI, 0);
1663 mv64x60_write(bh, MV64x60_PCI0_ACC_CNTL_5_SIZE, 0);
1664 mv64x60_write(bh, GT64260_PCI0_ACC_CNTL_6_BASE_LO, 0xfff);
1665 mv64x60_write(bh, GT64260_PCI0_ACC_CNTL_6_BASE_HI, 0);
1666 mv64x60_write(bh, GT64260_PCI0_ACC_CNTL_6_SIZE, 0);
1667 mv64x60_write(bh, GT64260_PCI0_ACC_CNTL_7_BASE_LO, 0xfff);
1668 mv64x60_write(bh, GT64260_PCI0_ACC_CNTL_7_BASE_HI, 0);
1669 mv64x60_write(bh, GT64260_PCI0_ACC_CNTL_7_SIZE, 0);
1670
1671 mv64x60_write(bh, MV64x60_PCI1_ACC_CNTL_4_BASE_LO, 0xfff);
1672 mv64x60_write(bh, MV64x60_PCI1_ACC_CNTL_4_BASE_HI, 0);
1673 mv64x60_write(bh, MV64x60_PCI1_ACC_CNTL_4_SIZE, 0);
1674 mv64x60_write(bh, MV64x60_PCI1_ACC_CNTL_5_BASE_LO, 0xfff);
1675 mv64x60_write(bh, MV64x60_PCI1_ACC_CNTL_5_BASE_HI, 0);
1676 mv64x60_write(bh, MV64x60_PCI1_ACC_CNTL_5_SIZE, 0);
1677 mv64x60_write(bh, GT64260_PCI1_ACC_CNTL_6_BASE_LO, 0xfff);
1678 mv64x60_write(bh, GT64260_PCI1_ACC_CNTL_6_BASE_HI, 0);
1679 mv64x60_write(bh, GT64260_PCI1_ACC_CNTL_6_SIZE, 0);
1680 mv64x60_write(bh, GT64260_PCI1_ACC_CNTL_7_BASE_LO, 0xfff);
1681 mv64x60_write(bh, GT64260_PCI1_ACC_CNTL_7_BASE_HI, 0);
1682 mv64x60_write(bh, GT64260_PCI1_ACC_CNTL_7_SIZE, 0);
1683
1684 /* Disable all PCI-><whatever> windows */
1685 mv64x60_set_bits(bh, MV64x60_PCI0_BAR_ENABLE, 0x07fffdff);
1686 mv64x60_set_bits(bh, MV64x60_PCI1_BAR_ENABLE, 0x07fffdff);
1687
1688 /*
1689 * Some firmwares enable a bunch of intr sources
1690 * for the PCI INT output pins.
1691 */
1692 mv64x60_write(bh, GT64260_IC_CPU_INTR_MASK_LO, 0);
1693 mv64x60_write(bh, GT64260_IC_CPU_INTR_MASK_HI, 0);
1694 mv64x60_write(bh, GT64260_IC_PCI0_INTR_MASK_LO, 0);
1695 mv64x60_write(bh, GT64260_IC_PCI0_INTR_MASK_HI, 0);
1696 mv64x60_write(bh, GT64260_IC_PCI1_INTR_MASK_LO, 0);
1697 mv64x60_write(bh, GT64260_IC_PCI1_INTR_MASK_HI, 0);
1698 mv64x60_write(bh, GT64260_IC_CPU_INT_0_MASK, 0);
1699 mv64x60_write(bh, GT64260_IC_CPU_INT_1_MASK, 0);
1700 mv64x60_write(bh, GT64260_IC_CPU_INT_2_MASK, 0);
1701 mv64x60_write(bh, GT64260_IC_CPU_INT_3_MASK, 0);
1702 }
1703
1704 /*
1705 * gt64260a_chip_specific_init()
1706 *
1707 * Implement errata workarounds for the GT64260A.
1708 */
1709 static void __init
1710 gt64260a_chip_specific_init(struct mv64x60_handle *bh,
1711 struct mv64x60_setup_info *si)
1712 {
1713 #ifdef CONFIG_SERIAL_MPSC
1714 struct resource *r;
1715 #endif
1716 #if !defined(CONFIG_NOT_COHERENT_CACHE)
1717 u32 val;
1718 u8 save_exclude;
1719 #endif
1720
1721 if (si->pci_0.enable_bus)
1722 mv64x60_set_bits(bh, MV64x60_PCI0_CMD,
1723 ((1<<4) | (1<<5) | (1<<9) | (1<<13)));
1724
1725 if (si->pci_1.enable_bus)
1726 mv64x60_set_bits(bh, MV64x60_PCI1_CMD,
1727 ((1<<4) | (1<<5) | (1<<9) | (1<<13)));
1728
1729 /*
1730 * Dave Wilhardt found that bit 4 in the PCI Command registers must
1731 * be set if you are using cache coherency.
1732 */
1733 #if !defined(CONFIG_NOT_COHERENT_CACHE)
1734 /* Res #MEM-4 -- cpu read buffer to buffer 1 */
1735 if ((mv64x60_read(bh, MV64x60_CPU_MODE) & 0xf0) == 0x40)
1736 mv64x60_set_bits(bh, GT64260_SDRAM_CONFIG, (1<<26));
1737
1738 save_exclude = mv64x60_pci_exclude_bridge;
1739 mv64x60_pci_exclude_bridge = 0;
1740 if (si->pci_0.enable_bus) {
1741 early_read_config_dword(bh->hose_a, 0, PCI_DEVFN(0,0),
1742 PCI_COMMAND, &val);
1743 val |= PCI_COMMAND_INVALIDATE;
1744 early_write_config_dword(bh->hose_a, 0, PCI_DEVFN(0,0),
1745 PCI_COMMAND, val);
1746 }
1747
1748 if (si->pci_1.enable_bus) {
1749 early_read_config_dword(bh->hose_b, 0, PCI_DEVFN(0,0),
1750 PCI_COMMAND, &val);
1751 val |= PCI_COMMAND_INVALIDATE;
1752 early_write_config_dword(bh->hose_b, 0, PCI_DEVFN(0,0),
1753 PCI_COMMAND, val);
1754 }
1755 mv64x60_pci_exclude_bridge = save_exclude;
1756 #endif
1757
1758 /* Disable buffer/descriptor snooping */
1759 mv64x60_clr_bits(bh, 0xf280, (1<< 6) | (1<<14) | (1<<22) | (1<<30));
1760 mv64x60_clr_bits(bh, 0xf2c0, (1<< 6) | (1<<14) | (1<<22) | (1<<30));
1761
1762 #ifdef CONFIG_SERIAL_MPSC
1763 mv64x60_mpsc0_pdata.mirror_regs = 1;
1764 mv64x60_mpsc0_pdata.cache_mgmt = 1;
1765 mv64x60_mpsc1_pdata.mirror_regs = 1;
1766 mv64x60_mpsc1_pdata.cache_mgmt = 1;
1767
1768 if ((r = platform_get_resource(&mpsc1_device, IORESOURCE_IRQ, 0))
1769 != NULL) {
1770 r->start = MV64x60_IRQ_SDMA_0;
1771 r->end = MV64x60_IRQ_SDMA_0;
1772 }
1773 #endif
1774 }
1775
1776 /*
1777 * gt64260b_chip_specific_init()
1778 *
1779 * Implement errata workarounds for the GT64260B.
1780 */
1781 static void __init
1782 gt64260b_chip_specific_init(struct mv64x60_handle *bh,
1783 struct mv64x60_setup_info *si)
1784 {
1785 #ifdef CONFIG_SERIAL_MPSC
1786 struct resource *r;
1787 #endif
1788 #if !defined(CONFIG_NOT_COHERENT_CACHE)
1789 u32 val;
1790 u8 save_exclude;
1791 #endif
1792
1793 if (si->pci_0.enable_bus)
1794 mv64x60_set_bits(bh, MV64x60_PCI0_CMD,
1795 ((1<<4) | (1<<5) | (1<<9) | (1<<13)));
1796
1797 if (si->pci_1.enable_bus)
1798 mv64x60_set_bits(bh, MV64x60_PCI1_CMD,
1799 ((1<<4) | (1<<5) | (1<<9) | (1<<13)));
1800
1801 /*
1802 * Dave Wilhardt found that bit 4 in the PCI Command registers must
1803 * be set if you are using cache coherency.
1804 */
1805 #if !defined(CONFIG_NOT_COHERENT_CACHE)
1806 mv64x60_set_bits(bh, GT64260_CPU_WB_PRIORITY_BUFFER_DEPTH, 0xf);
1807
1808 /* Res #MEM-4 -- cpu read buffer to buffer 1 */
1809 if ((mv64x60_read(bh, MV64x60_CPU_MODE) & 0xf0) == 0x40)
1810 mv64x60_set_bits(bh, GT64260_SDRAM_CONFIG, (1<<26));
1811
1812 save_exclude = mv64x60_pci_exclude_bridge;
1813 mv64x60_pci_exclude_bridge = 0;
1814 if (si->pci_0.enable_bus) {
1815 early_read_config_dword(bh->hose_a, 0, PCI_DEVFN(0,0),
1816 PCI_COMMAND, &val);
1817 val |= PCI_COMMAND_INVALIDATE;
1818 early_write_config_dword(bh->hose_a, 0, PCI_DEVFN(0,0),
1819 PCI_COMMAND, val);
1820 }
1821
1822 if (si->pci_1.enable_bus) {
1823 early_read_config_dword(bh->hose_b, 0, PCI_DEVFN(0,0),
1824 PCI_COMMAND, &val);
1825 val |= PCI_COMMAND_INVALIDATE;
1826 early_write_config_dword(bh->hose_b, 0, PCI_DEVFN(0,0),
1827 PCI_COMMAND, val);
1828 }
1829 mv64x60_pci_exclude_bridge = save_exclude;
1830 #endif
1831
1832 /* Disable buffer/descriptor snooping */
1833 mv64x60_clr_bits(bh, 0xf280, (1<< 6) | (1<<14) | (1<<22) | (1<<30));
1834 mv64x60_clr_bits(bh, 0xf2c0, (1<< 6) | (1<<14) | (1<<22) | (1<<30));
1835
1836 #ifdef CONFIG_SERIAL_MPSC
1837 /*
1838 * The 64260B is not supposed to have the bug where the MPSC & ENET
1839 * can't access cache coherent regions. However, testing has shown
1840 * that the MPSC, at least, still has this bug.
1841 */
1842 mv64x60_mpsc0_pdata.cache_mgmt = 1;
1843 mv64x60_mpsc1_pdata.cache_mgmt = 1;
1844
1845 if ((r = platform_get_resource(&mpsc1_device, IORESOURCE_IRQ, 0))
1846 != NULL) {
1847 r->start = MV64x60_IRQ_SDMA_0;
1848 r->end = MV64x60_IRQ_SDMA_0;
1849 }
1850 #endif
1851 }
1852
1853 /*
1854 *****************************************************************************
1855 *
1856 * MV64360-Specific Routines
1857 *
1858 *****************************************************************************
1859 */
1860 /*
1861 * mv64360_translate_size()
1862 *
1863 * On the MV64360, the size register is set similar to the size you get
1864 * from a pci config space BAR register. That is, programmed from LSB to MSB
1865 * as a sequence of 1's followed by a sequence of 0's. IOW, "size -1" with the
1866 * assumption that the size is a power of 2.
1867 */
1868 static u32 __init
1869 mv64360_translate_size(u32 base_addr, u32 size, u32 num_bits)
1870 {
1871 return mv64x60_mask(size - 1, num_bits);
1872 }
1873
1874 /*
1875 * mv64360_untranslate_size()
1876 *
1877 * Translate the size register value of a window into a window size.
1878 */
1879 static u32 __init
1880 mv64360_untranslate_size(u32 base_addr, u32 size, u32 num_bits)
1881 {
1882 if (size > 0) {
1883 size >>= (32 - num_bits);
1884 size++;
1885 size <<= (32 - num_bits);
1886 }
1887
1888 return size;
1889 }
1890
1891 /*
1892 * mv64360_set_pci2mem_window()
1893 *
1894 * The PCI->MEM window registers are actually in PCI config space so need
1895 * to set them by setting the correct config space BARs.
1896 */
1897 struct {
1898 u32 fcn;
1899 u32 base_hi_bar;
1900 u32 base_lo_bar;
1901 } static mv64360_reg_addrs[2][4] __initdata = {
1902 {{ 0, 0x14, 0x10 }, { 0, 0x1c, 0x18 },
1903 { 1, 0x14, 0x10 }, { 1, 0x1c, 0x18 }},
1904 {{ 0, 0x94, 0x90 }, { 0, 0x9c, 0x98 },
1905 { 1, 0x94, 0x90 }, { 1, 0x9c, 0x98 }}
1906 };
1907
1908 static void __init
1909 mv64360_set_pci2mem_window(struct pci_controller *hose, u32 bus, u32 window,
1910 u32 base)
1911 {
1912 u8 save_exclude;
1913
1914 pr_debug("set pci->mem window: %d, hose: %d, base: 0x%x\n", window,
1915 hose->index, base);
1916
1917 save_exclude = mv64x60_pci_exclude_bridge;
1918 mv64x60_pci_exclude_bridge = 0;
1919 early_write_config_dword(hose, 0,
1920 PCI_DEVFN(0, mv64360_reg_addrs[bus][window].fcn),
1921 mv64360_reg_addrs[bus][window].base_hi_bar, 0);
1922 early_write_config_dword(hose, 0,
1923 PCI_DEVFN(0, mv64360_reg_addrs[bus][window].fcn),
1924 mv64360_reg_addrs[bus][window].base_lo_bar,
1925 mv64x60_mask(base,20) | 0xc);
1926 mv64x60_pci_exclude_bridge = save_exclude;
1927 }
1928
1929 /*
1930 * mv64360_set_pci2regs_window()
1931 *
1932 * Set where the bridge's registers appear in PCI MEM space.
1933 */
1934 static u32 mv64360_offset[2][2] __initdata = {{0x20, 0x24}, {0xa0, 0xa4}};
1935
1936 static void __init
1937 mv64360_set_pci2regs_window(struct mv64x60_handle *bh,
1938 struct pci_controller *hose, u32 bus, u32 base)
1939 {
1940 u8 save_exclude;
1941
1942 pr_debug("set pci->internal regs hose: %d, base: 0x%x\n", hose->index,
1943 base);
1944
1945 save_exclude = mv64x60_pci_exclude_bridge;
1946 mv64x60_pci_exclude_bridge = 0;
1947 early_write_config_dword(hose, 0, PCI_DEVFN(0,0),
1948 mv64360_offset[bus][0], (base << 16));
1949 early_write_config_dword(hose, 0, PCI_DEVFN(0,0),
1950 mv64360_offset[bus][1], 0);
1951 mv64x60_pci_exclude_bridge = save_exclude;
1952 }
1953
1954 /*
1955 * mv64360_is_enabled_32bit()
1956 *
1957 * On a MV64360, a window is enabled by either clearing a bit in the
1958 * CPU BAR Enable reg or setting a bit in the window's base reg.
1959 * Note that this doesn't work for windows on the PCI slave side but we don't
1960 * check those so its okay.
1961 */
1962 static u32 __init
1963 mv64360_is_enabled_32bit(struct mv64x60_handle *bh, u32 window)
1964 {
1965 u32 extra, rc = 0;
1966
1967 if (((mv64360_32bit_windows[window].base_reg != 0) &&
1968 (mv64360_32bit_windows[window].size_reg != 0)) ||
1969 (window == MV64x60_CPU2SRAM_WIN)) {
1970
1971 extra = mv64360_32bit_windows[window].extra;
1972
1973 switch (extra & MV64x60_EXTRA_MASK) {
1974 case MV64x60_EXTRA_CPUWIN_ENAB:
1975 rc = (mv64x60_read(bh, MV64360_CPU_BAR_ENABLE) &
1976 (1 << (extra & 0x1f))) == 0;
1977 break;
1978
1979 case MV64x60_EXTRA_CPUPROT_ENAB:
1980 rc = (mv64x60_read(bh,
1981 mv64360_32bit_windows[window].base_reg) &
1982 (1 << (extra & 0x1f))) != 0;
1983 break;
1984
1985 case MV64x60_EXTRA_ENET_ENAB:
1986 rc = (mv64x60_read(bh, MV64360_ENET2MEM_BAR_ENABLE) &
1987 (1 << (extra & 0x7))) == 0;
1988 break;
1989
1990 case MV64x60_EXTRA_MPSC_ENAB:
1991 rc = (mv64x60_read(bh, MV64360_MPSC2MEM_BAR_ENABLE) &
1992 (1 << (extra & 0x3))) == 0;
1993 break;
1994
1995 case MV64x60_EXTRA_IDMA_ENAB:
1996 rc = (mv64x60_read(bh, MV64360_IDMA2MEM_BAR_ENABLE) &
1997 (1 << (extra & 0x7))) == 0;
1998 break;
1999
2000 default:
2001 printk(KERN_ERR "mv64360_is_enabled: %s\n",
2002 "32bit table corrupted");
2003 }
2004 }
2005
2006 return rc;
2007 }
2008
2009 /*
2010 * mv64360_enable_window_32bit()
2011 *
2012 * On a MV64360, a window is enabled by either clearing a bit in the
2013 * CPU BAR Enable reg or setting a bit in the window's base reg.
2014 */
2015 static void __init
2016 mv64360_enable_window_32bit(struct mv64x60_handle *bh, u32 window)
2017 {
2018 u32 extra;
2019
2020 pr_debug("enable 32bit window: %d\n", window);
2021
2022 if (((mv64360_32bit_windows[window].base_reg != 0) &&
2023 (mv64360_32bit_windows[window].size_reg != 0)) ||
2024 (window == MV64x60_CPU2SRAM_WIN)) {
2025
2026 extra = mv64360_32bit_windows[window].extra;
2027
2028 switch (extra & MV64x60_EXTRA_MASK) {
2029 case MV64x60_EXTRA_CPUWIN_ENAB:
2030 mv64x60_clr_bits(bh, MV64360_CPU_BAR_ENABLE,
2031 (1 << (extra & 0x1f)));
2032 break;
2033
2034 case MV64x60_EXTRA_CPUPROT_ENAB:
2035 mv64x60_set_bits(bh,
2036 mv64360_32bit_windows[window].base_reg,
2037 (1 << (extra & 0x1f)));
2038 break;
2039
2040 case MV64x60_EXTRA_ENET_ENAB:
2041 mv64x60_clr_bits(bh, MV64360_ENET2MEM_BAR_ENABLE,
2042 (1 << (extra & 0x7)));
2043 break;
2044
2045 case MV64x60_EXTRA_MPSC_ENAB:
2046 mv64x60_clr_bits(bh, MV64360_MPSC2MEM_BAR_ENABLE,
2047 (1 << (extra & 0x3)));
2048 break;
2049
2050 case MV64x60_EXTRA_IDMA_ENAB:
2051 mv64x60_clr_bits(bh, MV64360_IDMA2MEM_BAR_ENABLE,
2052 (1 << (extra & 0x7)));
2053 break;
2054
2055 default:
2056 printk(KERN_ERR "mv64360_enable: %s\n",
2057 "32bit table corrupted");
2058 }
2059 }
2060 }
2061
2062 /*
2063 * mv64360_disable_window_32bit()
2064 *
2065 * On a MV64360, a window is disabled by either setting a bit in the
2066 * CPU BAR Enable reg or clearing a bit in the window's base reg.
2067 */
2068 static void __init
2069 mv64360_disable_window_32bit(struct mv64x60_handle *bh, u32 window)
2070 {
2071 u32 extra;
2072
2073 pr_debug("disable 32bit window: %d, base_reg: 0x%x, size_reg: 0x%x\n",
2074 window, mv64360_32bit_windows[window].base_reg,
2075 mv64360_32bit_windows[window].size_reg);
2076
2077 if (((mv64360_32bit_windows[window].base_reg != 0) &&
2078 (mv64360_32bit_windows[window].size_reg != 0)) ||
2079 (window == MV64x60_CPU2SRAM_WIN)) {
2080
2081 extra = mv64360_32bit_windows[window].extra;
2082
2083 switch (extra & MV64x60_EXTRA_MASK) {
2084 case MV64x60_EXTRA_CPUWIN_ENAB:
2085 mv64x60_set_bits(bh, MV64360_CPU_BAR_ENABLE,
2086 (1 << (extra & 0x1f)));
2087 break;
2088
2089 case MV64x60_EXTRA_CPUPROT_ENAB:
2090 mv64x60_clr_bits(bh,
2091 mv64360_32bit_windows[window].base_reg,
2092 (1 << (extra & 0x1f)));
2093 break;
2094
2095 case MV64x60_EXTRA_ENET_ENAB:
2096 mv64x60_set_bits(bh, MV64360_ENET2MEM_BAR_ENABLE,
2097 (1 << (extra & 0x7)));
2098 break;
2099
2100 case MV64x60_EXTRA_MPSC_ENAB:
2101 mv64x60_set_bits(bh, MV64360_MPSC2MEM_BAR_ENABLE,
2102 (1 << (extra & 0x3)));
2103 break;
2104
2105 case MV64x60_EXTRA_IDMA_ENAB:
2106 mv64x60_set_bits(bh, MV64360_IDMA2MEM_BAR_ENABLE,
2107 (1 << (extra & 0x7)));
2108 break;
2109
2110 default:
2111 printk(KERN_ERR "mv64360_disable: %s\n",
2112 "32bit table corrupted");
2113 }
2114 }
2115 }
2116
2117 /*
2118 * mv64360_enable_window_64bit()
2119 *
2120 * On the MV64360, a 64-bit window is enabled by setting a bit in the window's
2121 * base reg.
2122 */
2123 static void __init
2124 mv64360_enable_window_64bit(struct mv64x60_handle *bh, u32 window)
2125 {
2126 pr_debug("enable 64bit window: %d\n", window);
2127
2128 if ((mv64360_64bit_windows[window].base_lo_reg!= 0) &&
2129 (mv64360_64bit_windows[window].size_reg != 0)) {
2130
2131 if ((mv64360_64bit_windows[window].extra & MV64x60_EXTRA_MASK)
2132 == MV64x60_EXTRA_PCIACC_ENAB)
2133 mv64x60_set_bits(bh,
2134 mv64360_64bit_windows[window].base_lo_reg,
2135 (1 << (mv64360_64bit_windows[window].extra &
2136 0x1f)));
2137 else
2138 printk(KERN_ERR "mv64360_enable: %s\n",
2139 "64bit table corrupted");
2140 }
2141 }
2142
2143 /*
2144 * mv64360_disable_window_64bit()
2145 *
2146 * On a MV64360, a 64-bit window is disabled by clearing a bit in the window's
2147 * base reg.
2148 */
2149 static void __init
2150 mv64360_disable_window_64bit(struct mv64x60_handle *bh, u32 window)
2151 {
2152 pr_debug("disable 64bit window: %d, base_reg: 0x%x, size_reg: 0x%x\n",
2153 window, mv64360_64bit_windows[window].base_lo_reg,
2154 mv64360_64bit_windows[window].size_reg);
2155
2156 if ((mv64360_64bit_windows[window].base_lo_reg != 0) &&
2157 (mv64360_64bit_windows[window].size_reg != 0)) {
2158 if ((mv64360_64bit_windows[window].extra & MV64x60_EXTRA_MASK)
2159 == MV64x60_EXTRA_PCIACC_ENAB)
2160 mv64x60_clr_bits(bh,
2161 mv64360_64bit_windows[window].base_lo_reg,
2162 (1 << (mv64360_64bit_windows[window].extra &
2163 0x1f)));
2164 else
2165 printk(KERN_ERR "mv64360_disable: %s\n",
2166 "64bit table corrupted");
2167 }
2168 }
2169
2170 /*
2171 * mv64360_disable_all_windows()
2172 *
2173 * The MV64360 has a few windows that aren't represented in the table of
2174 * windows at the top of this file. This routine turns all of them off
2175 * except for the memory controller windows, of course.
2176 */
2177 static void __init
2178 mv64360_disable_all_windows(struct mv64x60_handle *bh,
2179 struct mv64x60_setup_info *si)
2180 {
2181 u32 preserve, i;
2182
2183 /* Disable 32bit windows (don't disable cpu->mem windows) */
2184 for (i=MV64x60_CPU2DEV_0_WIN; i<MV64x60_32BIT_WIN_COUNT; i++) {
2185 if (i < 32)
2186 preserve = si->window_preserve_mask_32_lo & (1 << i);
2187 else
2188 preserve = si->window_preserve_mask_32_hi & (1<<(i-32));
2189
2190 if (!preserve)
2191 mv64360_disable_window_32bit(bh, i);
2192 }
2193
2194 /* Disable 64bit windows */
2195 for (i=0; i<MV64x60_64BIT_WIN_COUNT; i++)
2196 if (!(si->window_preserve_mask_64 & (1<<i)))
2197 mv64360_disable_window_64bit(bh, i);
2198
2199 /* Turn off PCI->MEM access cntl wins not in mv64360_64bit_windows[] */
2200 mv64x60_clr_bits(bh, MV64x60_PCI0_ACC_CNTL_4_BASE_LO, 0);
2201 mv64x60_clr_bits(bh, MV64x60_PCI0_ACC_CNTL_5_BASE_LO, 0);
2202 mv64x60_clr_bits(bh, MV64x60_PCI1_ACC_CNTL_4_BASE_LO, 0);
2203 mv64x60_clr_bits(bh, MV64x60_PCI1_ACC_CNTL_5_BASE_LO, 0);
2204
2205 /* Disable all PCI-><whatever> windows */
2206 mv64x60_set_bits(bh, MV64x60_PCI0_BAR_ENABLE, 0x0000f9ff);
2207 mv64x60_set_bits(bh, MV64x60_PCI1_BAR_ENABLE, 0x0000f9ff);
2208 }
2209
2210 /*
2211 * mv64360_config_io2mem_windows()
2212 *
2213 * ENET, MPSC, and IDMA ctlrs on the MV64[34]60 have separate windows that
2214 * must be set up so that the respective ctlr can access system memory.
2215 */
2216 static u32 enet_tab[MV64x60_CPU2MEM_WINDOWS] __initdata = {
2217 MV64x60_ENET2MEM_0_WIN, MV64x60_ENET2MEM_1_WIN,
2218 MV64x60_ENET2MEM_2_WIN, MV64x60_ENET2MEM_3_WIN,
2219 };
2220
2221 static u32 mpsc_tab[MV64x60_CPU2MEM_WINDOWS] __initdata = {
2222 MV64x60_MPSC2MEM_0_WIN, MV64x60_MPSC2MEM_1_WIN,
2223 MV64x60_MPSC2MEM_2_WIN, MV64x60_MPSC2MEM_3_WIN,
2224 };
2225
2226 static u32 idma_tab[MV64x60_CPU2MEM_WINDOWS] __initdata = {
2227 MV64x60_IDMA2MEM_0_WIN, MV64x60_IDMA2MEM_1_WIN,
2228 MV64x60_IDMA2MEM_2_WIN, MV64x60_IDMA2MEM_3_WIN,
2229 };
2230
2231 static u32 dram_selects[MV64x60_CPU2MEM_WINDOWS] __initdata =
2232 { 0xe, 0xd, 0xb, 0x7 };
2233
2234 static void __init
2235 mv64360_config_io2mem_windows(struct mv64x60_handle *bh,
2236 struct mv64x60_setup_info *si,
2237 u32 mem_windows[MV64x60_CPU2MEM_WINDOWS][2])
2238 {
2239 u32 i, win;
2240
2241 pr_debug("config_io2regs_windows: enet, mpsc, idma -> bridge regs\n");
2242
2243 mv64x60_write(bh, MV64360_ENET2MEM_ACC_PROT_0, 0);
2244 mv64x60_write(bh, MV64360_ENET2MEM_ACC_PROT_1, 0);
2245 mv64x60_write(bh, MV64360_ENET2MEM_ACC_PROT_2, 0);
2246
2247 mv64x60_write(bh, MV64360_MPSC2MEM_ACC_PROT_0, 0);
2248 mv64x60_write(bh, MV64360_MPSC2MEM_ACC_PROT_1, 0);
2249
2250 mv64x60_write(bh, MV64360_IDMA2MEM_ACC_PROT_0, 0);
2251 mv64x60_write(bh, MV64360_IDMA2MEM_ACC_PROT_1, 0);
2252 mv64x60_write(bh, MV64360_IDMA2MEM_ACC_PROT_2, 0);
2253 mv64x60_write(bh, MV64360_IDMA2MEM_ACC_PROT_3, 0);
2254
2255 /* Assume that mem ctlr has no more windows than embedded I/O ctlr */
2256 for (win=MV64x60_CPU2MEM_0_WIN,i=0;win<=MV64x60_CPU2MEM_3_WIN;win++,i++)
2257 if (bh->ci->is_enabled_32bit(bh, win)) {
2258 mv64x60_set_32bit_window(bh, enet_tab[i],
2259 mem_windows[i][0], mem_windows[i][1],
2260 (dram_selects[i] << 8) |
2261 (si->enet_options[i] & 0x3000));
2262 bh->ci->enable_window_32bit(bh, enet_tab[i]);
2263
2264 /* Give enet r/w access to memory region */
2265 mv64x60_set_bits(bh, MV64360_ENET2MEM_ACC_PROT_0,
2266 (0x3 << (i << 1)));
2267 mv64x60_set_bits(bh, MV64360_ENET2MEM_ACC_PROT_1,
2268 (0x3 << (i << 1)));
2269 mv64x60_set_bits(bh, MV64360_ENET2MEM_ACC_PROT_2,
2270 (0x3 << (i << 1)));
2271
2272 mv64x60_set_32bit_window(bh, mpsc_tab[i],
2273 mem_windows[i][0], mem_windows[i][1],
2274 (dram_selects[i] << 8) |
2275 (si->mpsc_options[i] & 0x3000));
2276 bh->ci->enable_window_32bit(bh, mpsc_tab[i]);
2277
2278 /* Give mpsc r/w access to memory region */
2279 mv64x60_set_bits(bh, MV64360_MPSC2MEM_ACC_PROT_0,
2280 (0x3 << (i << 1)));
2281 mv64x60_set_bits(bh, MV64360_MPSC2MEM_ACC_PROT_1,
2282 (0x3 << (i << 1)));
2283
2284 mv64x60_set_32bit_window(bh, idma_tab[i],
2285 mem_windows[i][0], mem_windows[i][1],
2286 (dram_selects[i] << 8) |
2287 (si->idma_options[i] & 0x3000));
2288 bh->ci->enable_window_32bit(bh, idma_tab[i]);
2289
2290 /* Give idma r/w access to memory region */
2291 mv64x60_set_bits(bh, MV64360_IDMA2MEM_ACC_PROT_0,
2292 (0x3 << (i << 1)));
2293 mv64x60_set_bits(bh, MV64360_IDMA2MEM_ACC_PROT_1,
2294 (0x3 << (i << 1)));
2295 mv64x60_set_bits(bh, MV64360_IDMA2MEM_ACC_PROT_2,
2296 (0x3 << (i << 1)));
2297 mv64x60_set_bits(bh, MV64360_IDMA2MEM_ACC_PROT_3,
2298 (0x3 << (i << 1)));
2299 }
2300 }
2301
2302 /*
2303 * mv64360_set_mpsc2regs_window()
2304 *
2305 * MPSC has a window to the bridge's internal registers. Call this routine
2306 * to change that window so it doesn't conflict with the windows mapping the
2307 * mpsc to system memory.
2308 */
2309 static void __init
2310 mv64360_set_mpsc2regs_window(struct mv64x60_handle *bh, u32 base)
2311 {
2312 pr_debug("set mpsc->internal regs, base: 0x%x\n", base);
2313 mv64x60_write(bh, MV64360_MPSC2REGS_BASE, base & 0xffff0000);
2314 }
2315
2316 /*
2317 * mv64360_chip_specific_init()
2318 *
2319 * Implement errata workarounds for the MV64360.
2320 */
2321 static void __init
2322 mv64360_chip_specific_init(struct mv64x60_handle *bh,
2323 struct mv64x60_setup_info *si)
2324 {
2325 #if !defined(CONFIG_NOT_COHERENT_CACHE)
2326 mv64x60_set_bits(bh, MV64360_D_UNIT_CONTROL_HIGH, (1<<24));
2327 #endif
2328 #ifdef CONFIG_SERIAL_MPSC
2329 mv64x60_mpsc0_pdata.brg_can_tune = 1;
2330 mv64x60_mpsc0_pdata.cache_mgmt = 1;
2331 mv64x60_mpsc1_pdata.brg_can_tune = 1;
2332 mv64x60_mpsc1_pdata.cache_mgmt = 1;
2333 #endif
2334 }
2335
2336 /*
2337 * mv64460_chip_specific_init()
2338 *
2339 * Implement errata workarounds for the MV64460.
2340 */
2341 static void __init
2342 mv64460_chip_specific_init(struct mv64x60_handle *bh,
2343 struct mv64x60_setup_info *si)
2344 {
2345 #if !defined(CONFIG_NOT_COHERENT_CACHE)
2346 mv64x60_set_bits(bh, MV64360_D_UNIT_CONTROL_HIGH, (1<<24) | (1<<25));
2347 mv64x60_set_bits(bh, MV64460_D_UNIT_MMASK, (1<<1) | (1<<4));
2348 #endif
2349 #ifdef CONFIG_SERIAL_MPSC
2350 mv64x60_mpsc0_pdata.brg_can_tune = 1;
2351 mv64x60_mpsc0_pdata.cache_mgmt = 1;
2352 mv64x60_mpsc1_pdata.brg_can_tune = 1;
2353 mv64x60_mpsc1_pdata.cache_mgmt = 1;
2354 #endif
2355 }
2356
2357
2358 #if defined(CONFIG_SYSFS) && !defined(CONFIG_GT64260)
2359 /* Export the hotswap register via sysfs for enum event monitoring */
2360 #define VAL_LEN_MAX 11 /* 32-bit hex or dec stringified number + '\n' */
2361
2362 DECLARE_MUTEX(mv64xxx_hs_lock);
2363
2364 static ssize_t
2365 mv64xxx_hs_reg_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
2366 {
2367 u32 v;
2368 u8 save_exclude;
2369
2370 if (off > 0)
2371 return 0;
2372 if (count < VAL_LEN_MAX)
2373 return -EINVAL;
2374
2375 if (down_interruptible(&mv64xxx_hs_lock))
2376 return -ERESTARTSYS;
2377 save_exclude = mv64x60_pci_exclude_bridge;
2378 mv64x60_pci_exclude_bridge = 0;
2379 early_read_config_dword(&sysfs_hose_a, 0, PCI_DEVFN(0, 0),
2380 MV64360_PCICFG_CPCI_HOTSWAP, &v);
2381 mv64x60_pci_exclude_bridge = save_exclude;
2382 up(&mv64xxx_hs_lock);
2383
2384 return sprintf(buf, "0x%08x\n", v);
2385 }
2386
2387 static ssize_t
2388 mv64xxx_hs_reg_write(struct kobject *kobj, char *buf, loff_t off, size_t count)
2389 {
2390 u32 v;
2391 u8 save_exclude;
2392
2393 if (off > 0)
2394 return 0;
2395 if (count <= 0)
2396 return -EINVAL;
2397
2398 if (sscanf(buf, "%i", &v) == 1) {
2399 if (down_interruptible(&mv64xxx_hs_lock))
2400 return -ERESTARTSYS;
2401 save_exclude = mv64x60_pci_exclude_bridge;
2402 mv64x60_pci_exclude_bridge = 0;
2403 early_write_config_dword(&sysfs_hose_a, 0, PCI_DEVFN(0, 0),
2404 MV64360_PCICFG_CPCI_HOTSWAP, v);
2405 mv64x60_pci_exclude_bridge = save_exclude;
2406 up(&mv64xxx_hs_lock);
2407 }
2408 else
2409 count = -EINVAL;
2410
2411 return count;
2412 }
2413
2414 static struct bin_attribute mv64xxx_hs_reg_attr = { /* Hotswap register */
2415 .attr = {
2416 .name = "hs_reg",
2417 .mode = S_IRUGO | S_IWUSR,
2418 .owner = THIS_MODULE,
2419 },
2420 .size = VAL_LEN_MAX,
2421 .read = mv64xxx_hs_reg_read,
2422 .write = mv64xxx_hs_reg_write,
2423 };
2424
2425 /* Provide sysfs file indicating if this platform supports the hs_reg */
2426 static ssize_t
2427 mv64xxx_hs_reg_valid_show(struct device *dev, struct device_attribute *attr,
2428 char *buf)
2429 {
2430 struct platform_device *pdev;
2431 struct mv64xxx_pdata *pdp;
2432 u32 v;
2433
2434 pdev = container_of(dev, struct platform_device, dev);
2435 pdp = (struct mv64xxx_pdata *)pdev->dev.platform_data;
2436
2437 if (down_interruptible(&mv64xxx_hs_lock))
2438 return -ERESTARTSYS;
2439 v = pdp->hs_reg_valid;
2440 up(&mv64xxx_hs_lock);
2441
2442 return sprintf(buf, "%i\n", v);
2443 }
2444 static DEVICE_ATTR(hs_reg_valid, S_IRUGO, mv64xxx_hs_reg_valid_show, NULL);
2445
2446 static int __init
2447 mv64xxx_sysfs_init(void)
2448 {
2449 sysfs_create_bin_file(&mv64xxx_device.dev.kobj, &mv64xxx_hs_reg_attr);
2450 sysfs_create_file(&mv64xxx_device.dev.kobj,&dev_attr_hs_reg_valid.attr);
2451 return 0;
2452 }
2453 subsys_initcall(mv64xxx_sysfs_init);
2454 #endif
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