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a3a0f8c8 DV |
1 | /* |
2 | * ASIC Device List Intialization | |
3 | * | |
4 | * Description: Defines the platform resources for the SA settop. | |
5 | * | |
6 | * Copyright (C) 2005-2009 Scientific-Atlanta, Inc. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
21 | * | |
22 | * Author: Ken Eppinett | |
23 | * David Schleef <ds@schleef.org> | |
24 | * | |
25 | * Description: Defines the platform resources for the SA settop. | |
26 | * | |
27 | * NOTE: The bootloader allocates persistent memory at an address which is | |
28 | * 16 MiB below the end of the highest address in KSEG0. All fixed | |
29 | * address memory reservations must avoid this region. | |
30 | */ | |
31 | ||
32 | #include <linux/device.h> | |
33 | #include <linux/kernel.h> | |
34 | #include <linux/init.h> | |
35 | #include <linux/resource.h> | |
36 | #include <linux/serial_reg.h> | |
37 | #include <linux/io.h> | |
38 | #include <linux/bootmem.h> | |
39 | #include <linux/mm.h> | |
40 | #include <linux/platform_device.h> | |
41 | #include <linux/module.h> | |
42 | #include <asm/page.h> | |
43 | #include <linux/swap.h> | |
44 | #include <linux/highmem.h> | |
45 | #include <linux/dma-mapping.h> | |
46 | ||
47 | #include <asm/mach-powertv/asic.h> | |
48 | #include <asm/mach-powertv/asic_regs.h> | |
49 | #include <asm/mach-powertv/interrupts.h> | |
50 | ||
51 | #ifdef CONFIG_BOOTLOADER_DRIVER | |
52 | #include <asm/mach-powertv/kbldr.h> | |
53 | #endif | |
54 | #include <asm/bootinfo.h> | |
55 | ||
56 | #define BOOTLDRFAMILY(byte1, byte0) (((byte1) << 8) | (byte0)) | |
57 | ||
58 | /* | |
59 | * Forward Prototypes | |
60 | */ | |
61 | static void pmem_setup_resource(void); | |
62 | ||
63 | /* | |
64 | * Global Variables | |
65 | */ | |
66 | enum asic_type asic; | |
67 | ||
68 | unsigned int platform_features; | |
69 | unsigned int platform_family; | |
59dfa2fc DV |
70 | struct register_map _asic_register_map; |
71 | EXPORT_SYMBOL(_asic_register_map); /* Exported for testing */ | |
a3a0f8c8 DV |
72 | unsigned long asic_phy_base; |
73 | unsigned long asic_base; | |
74 | EXPORT_SYMBOL(asic_base); /* Exported for testing */ | |
75 | struct resource *gp_resources; | |
76 | static bool usb_configured; | |
77 | ||
78 | /* | |
79 | * Don't recommend to use it directly, it is usually used by kernel internally. | |
80 | * Portable code should be using interfaces such as ioremp, dma_map_single, etc. | |
81 | */ | |
82 | unsigned long phys_to_bus_offset; | |
83 | EXPORT_SYMBOL(phys_to_bus_offset); | |
84 | ||
85 | /* | |
86 | * | |
87 | * IO Resource Definition | |
88 | * | |
89 | */ | |
90 | ||
91 | struct resource asic_resource = { | |
92 | .name = "ASIC Resource", | |
93 | .start = 0, | |
94 | .end = ASIC_IO_SIZE, | |
95 | .flags = IORESOURCE_MEM, | |
96 | }; | |
97 | ||
98 | /* | |
99 | * | |
100 | * USB Host Resource Definition | |
101 | * | |
102 | */ | |
103 | ||
104 | static struct resource ehci_resources[] = { | |
105 | { | |
106 | .parent = &asic_resource, | |
107 | .start = 0, | |
108 | .end = 0xff, | |
109 | .flags = IORESOURCE_MEM, | |
110 | }, | |
111 | { | |
112 | .start = irq_usbehci, | |
113 | .end = irq_usbehci, | |
114 | .flags = IORESOURCE_IRQ, | |
115 | }, | |
116 | }; | |
117 | ||
118 | static u64 ehci_dmamask = DMA_BIT_MASK(32); | |
119 | ||
120 | static struct platform_device ehci_device = { | |
121 | .name = "powertv-ehci", | |
122 | .id = 0, | |
123 | .num_resources = 2, | |
124 | .resource = ehci_resources, | |
125 | .dev = { | |
126 | .dma_mask = &ehci_dmamask, | |
127 | .coherent_dma_mask = DMA_BIT_MASK(32), | |
128 | }, | |
129 | }; | |
130 | ||
131 | static struct resource ohci_resources[] = { | |
132 | { | |
133 | .parent = &asic_resource, | |
134 | .start = 0, | |
135 | .end = 0xff, | |
136 | .flags = IORESOURCE_MEM, | |
137 | }, | |
138 | { | |
139 | .start = irq_usbohci, | |
140 | .end = irq_usbohci, | |
141 | .flags = IORESOURCE_IRQ, | |
142 | }, | |
143 | }; | |
144 | ||
145 | static u64 ohci_dmamask = DMA_BIT_MASK(32); | |
146 | ||
147 | static struct platform_device ohci_device = { | |
148 | .name = "powertv-ohci", | |
149 | .id = 0, | |
150 | .num_resources = 2, | |
151 | .resource = ohci_resources, | |
152 | .dev = { | |
153 | .dma_mask = &ohci_dmamask, | |
154 | .coherent_dma_mask = DMA_BIT_MASK(32), | |
155 | }, | |
156 | }; | |
157 | ||
158 | static struct platform_device *platform_devices[] = { | |
159 | &ehci_device, | |
160 | &ohci_device, | |
161 | }; | |
162 | ||
163 | /* | |
164 | * | |
165 | * Platform Configuration and Device Initialization | |
166 | * | |
167 | */ | |
168 | static void __init fs_update(int pe, int md, int sdiv, int disable_div_by_3) | |
169 | { | |
170 | int en_prg, byp, pwr, nsb, val; | |
171 | int sout; | |
172 | ||
173 | sout = 1; | |
174 | en_prg = 1; | |
175 | byp = 0; | |
176 | nsb = 1; | |
177 | pwr = 1; | |
178 | ||
179 | val = ((sdiv << 29) | (md << 24) | (pe<<8) | (sout<<3) | (byp<<2) | | |
180 | (nsb<<1) | (disable_div_by_3<<5)); | |
181 | ||
182 | asic_write(val, usb_fs); | |
183 | asic_write(val | (en_prg<<4), usb_fs); | |
184 | asic_write(val | (en_prg<<4) | pwr, usb_fs); | |
185 | } | |
186 | ||
187 | /* | |
188 | * Allow override of bootloader-specified model | |
189 | */ | |
190 | static char __initdata cmdline[COMMAND_LINE_SIZE]; | |
191 | ||
192 | #define FORCEFAMILY_PARAM "forcefamily" | |
193 | ||
194 | static __init int check_forcefamily(unsigned char forced_family[2]) | |
195 | { | |
196 | const char *p; | |
197 | ||
198 | forced_family[0] = '\0'; | |
199 | forced_family[1] = '\0'; | |
200 | ||
201 | /* Check the command line for a forcefamily directive */ | |
202 | strncpy(cmdline, arcs_cmdline, COMMAND_LINE_SIZE - 1); | |
203 | p = strstr(cmdline, FORCEFAMILY_PARAM); | |
204 | if (p && (p != cmdline) && (*(p - 1) != ' ')) | |
205 | p = strstr(p, " " FORCEFAMILY_PARAM "="); | |
206 | ||
207 | if (p) { | |
208 | p += strlen(FORCEFAMILY_PARAM "="); | |
209 | ||
210 | if (*p == '\0' || *(p + 1) == '\0' || | |
211 | (*(p + 2) != '\0' && *(p + 2) != ' ')) | |
212 | pr_err(FORCEFAMILY_PARAM " must be exactly two " | |
213 | "characters long, ignoring value\n"); | |
214 | ||
215 | else { | |
216 | forced_family[0] = *p; | |
217 | forced_family[1] = *(p + 1); | |
218 | } | |
219 | } | |
220 | ||
221 | return 0; | |
222 | } | |
223 | ||
224 | /* | |
225 | * platform_set_family - determine major platform family type. | |
226 | * | |
227 | * Returns family type; -1 if none | |
228 | * Returns the family type; -1 if none | |
229 | * | |
230 | */ | |
231 | static __init noinline void platform_set_family(void) | |
232 | { | |
233 | #define BOOTLDRFAMILY(byte1, byte0) (((byte1) << 8) | (byte0)) | |
234 | ||
235 | unsigned char forced_family[2]; | |
236 | unsigned short bootldr_family; | |
237 | ||
238 | check_forcefamily(forced_family); | |
239 | ||
240 | if (forced_family[0] != '\0' && forced_family[1] != '\0') | |
241 | bootldr_family = BOOTLDRFAMILY(forced_family[0], | |
242 | forced_family[1]); | |
243 | else { | |
244 | ||
245 | #ifdef CONFIG_BOOTLOADER_DRIVER | |
246 | bootldr_family = (unsigned short) kbldr_GetSWFamily(); | |
247 | #else | |
248 | #if defined(CONFIG_BOOTLOADER_FAMILY) | |
249 | bootldr_family = (unsigned short) BOOTLDRFAMILY( | |
250 | CONFIG_BOOTLOADER_FAMILY[0], | |
251 | CONFIG_BOOTLOADER_FAMILY[1]); | |
252 | #else | |
253 | #error "Unknown Bootloader Family" | |
254 | #endif | |
255 | #endif | |
256 | } | |
257 | ||
258 | pr_info("Bootloader Family = 0x%04X\n", bootldr_family); | |
259 | ||
260 | switch (bootldr_family) { | |
261 | case BOOTLDRFAMILY('R', '1'): | |
262 | platform_family = FAMILY_1500; | |
263 | break; | |
264 | case BOOTLDRFAMILY('4', '4'): | |
265 | platform_family = FAMILY_4500; | |
266 | break; | |
267 | case BOOTLDRFAMILY('4', '6'): | |
268 | platform_family = FAMILY_4600; | |
269 | break; | |
270 | case BOOTLDRFAMILY('A', '1'): | |
271 | platform_family = FAMILY_4600VZA; | |
272 | break; | |
273 | case BOOTLDRFAMILY('8', '5'): | |
274 | platform_family = FAMILY_8500; | |
275 | break; | |
276 | case BOOTLDRFAMILY('R', '2'): | |
277 | platform_family = FAMILY_8500RNG; | |
278 | break; | |
279 | case BOOTLDRFAMILY('8', '6'): | |
280 | platform_family = FAMILY_8600; | |
281 | break; | |
282 | case BOOTLDRFAMILY('B', '1'): | |
283 | platform_family = FAMILY_8600VZB; | |
284 | break; | |
285 | case BOOTLDRFAMILY('E', '1'): | |
286 | platform_family = FAMILY_1500VZE; | |
287 | break; | |
288 | case BOOTLDRFAMILY('F', '1'): | |
289 | platform_family = FAMILY_1500VZF; | |
290 | break; | |
291 | default: | |
292 | platform_family = -1; | |
293 | } | |
294 | } | |
295 | ||
296 | unsigned int platform_get_family(void) | |
297 | { | |
298 | return platform_family; | |
299 | } | |
300 | EXPORT_SYMBOL(platform_get_family); | |
301 | ||
302 | /* | |
303 | * \brief usb_eye_configure() for optimizing the USB eye on Calliope. | |
304 | * | |
305 | * \param unsigned int value saved to the register. | |
306 | * | |
307 | * \return none | |
308 | * | |
309 | */ | |
310 | static void __init usb_eye_configure(unsigned int value) | |
311 | { | |
312 | asic_write(asic_read(crt_spare) | value, crt_spare); | |
313 | } | |
314 | ||
315 | /* | |
316 | * platform_get_asic - determine the ASIC type. | |
317 | * | |
318 | * \param none | |
319 | * | |
320 | * \return ASIC type; ASIC_UNKNOWN if none | |
321 | * | |
322 | */ | |
323 | enum asic_type platform_get_asic(void) | |
324 | { | |
325 | return asic; | |
326 | } | |
327 | EXPORT_SYMBOL(platform_get_asic); | |
328 | ||
329 | /* | |
330 | * platform_configure_usb - usb configuration based on platform type. | |
331 | * @bcm1_usb2_ctl: value for the BCM1_USB2_CTL register, which is | |
332 | * quirky | |
333 | */ | |
334 | static void __init platform_configure_usb(void) | |
335 | { | |
336 | u32 bcm1_usb2_ctl; | |
337 | ||
338 | if (usb_configured) | |
339 | return; | |
340 | ||
341 | switch (asic) { | |
342 | case ASIC_ZEUS: | |
343 | fs_update(0x0000, 0x11, 0x02, 0); | |
344 | bcm1_usb2_ctl = 0x803; | |
345 | break; | |
346 | ||
347 | case ASIC_CRONUS: | |
348 | case ASIC_CRONUSLITE: | |
349 | fs_update(0x0000, 0x11, 0x02, 0); | |
350 | bcm1_usb2_ctl = 0x803; | |
351 | break; | |
352 | ||
353 | case ASIC_CALLIOPE: | |
354 | fs_update(0x0000, 0x11, 0x02, 1); | |
355 | ||
356 | switch (platform_family) { | |
357 | case FAMILY_1500VZE: | |
358 | break; | |
359 | ||
360 | case FAMILY_1500VZF: | |
361 | usb_eye_configure(0x003c0000); | |
362 | break; | |
363 | ||
364 | default: | |
365 | usb_eye_configure(0x00300000); | |
366 | break; | |
367 | } | |
368 | ||
369 | bcm1_usb2_ctl = 0x803; | |
370 | break; | |
371 | ||
372 | default: | |
373 | pr_err("Unknown ASIC type: %d\n", asic); | |
374 | break; | |
375 | } | |
376 | ||
377 | /* turn on USB power */ | |
378 | asic_write(0, usb2_strap); | |
379 | /* Enable all OHCI interrupts */ | |
380 | asic_write(bcm1_usb2_ctl, usb2_control); | |
381 | /* USB2_STBUS_OBC store32/load32 */ | |
382 | asic_write(3, usb2_stbus_obc); | |
383 | /* USB2_STBUS_MESS_SIZE 2 packets */ | |
384 | asic_write(1, usb2_stbus_mess_size); | |
385 | /* USB2_STBUS_CHUNK_SIZE 2 packets */ | |
386 | asic_write(1, usb2_stbus_chunk_size); | |
387 | ||
388 | usb_configured = true; | |
389 | } | |
390 | ||
391 | /* | |
392 | * Set up the USB EHCI interface | |
393 | */ | |
394 | void platform_configure_usb_ehci() | |
395 | { | |
396 | platform_configure_usb(); | |
397 | } | |
398 | ||
399 | /* | |
400 | * Set up the USB OHCI interface | |
401 | */ | |
402 | void platform_configure_usb_ohci() | |
403 | { | |
404 | platform_configure_usb(); | |
405 | } | |
406 | ||
407 | /* | |
408 | * Shut the USB EHCI interface down--currently a NOP | |
409 | */ | |
410 | void platform_unconfigure_usb_ehci() | |
411 | { | |
412 | } | |
413 | ||
414 | /* | |
415 | * Shut the USB OHCI interface down--currently a NOP | |
416 | */ | |
417 | void platform_unconfigure_usb_ohci() | |
418 | { | |
419 | } | |
420 | ||
59dfa2fc DV |
421 | static void __init set_register_map(unsigned long phys_base, |
422 | const struct register_map *map) | |
423 | { | |
424 | asic_phy_base = phys_base; | |
425 | _asic_register_map = *map; | |
426 | register_map_virtualize(&_asic_register_map); | |
427 | asic_base = (unsigned long)ioremap_nocache(phys_base, ASIC_IO_SIZE); | |
428 | } | |
429 | ||
a3a0f8c8 DV |
430 | /** |
431 | * configure_platform - configuration based on platform type. | |
432 | */ | |
433 | void __init configure_platform(void) | |
434 | { | |
435 | platform_set_family(); | |
436 | ||
437 | switch (platform_family) { | |
438 | case FAMILY_1500: | |
439 | case FAMILY_1500VZE: | |
440 | case FAMILY_1500VZF: | |
441 | platform_features = FFS_CAPABLE; | |
442 | asic = ASIC_CALLIOPE; | |
59dfa2fc | 443 | set_register_map(CALLIOPE_IO_BASE, &calliope_register_map); |
a3a0f8c8 DV |
444 | |
445 | if (platform_family == FAMILY_1500VZE) { | |
446 | gp_resources = non_dvr_vze_calliope_resources; | |
447 | pr_info("Platform: 1500/Vz Class E - " | |
448 | "CALLIOPE, NON_DVR_CAPABLE\n"); | |
449 | } else if (platform_family == FAMILY_1500VZF) { | |
450 | gp_resources = non_dvr_vzf_calliope_resources; | |
451 | pr_info("Platform: 1500/Vz Class F - " | |
452 | "CALLIOPE, NON_DVR_CAPABLE\n"); | |
453 | } else { | |
454 | gp_resources = non_dvr_calliope_resources; | |
455 | pr_info("Platform: 1500/RNG100 - CALLIOPE, " | |
456 | "NON_DVR_CAPABLE\n"); | |
457 | } | |
458 | break; | |
459 | ||
460 | case FAMILY_4500: | |
461 | platform_features = FFS_CAPABLE | PCIE_CAPABLE | | |
462 | DISPLAY_CAPABLE; | |
463 | asic = ASIC_ZEUS; | |
59dfa2fc | 464 | set_register_map(ZEUS_IO_BASE, &zeus_register_map); |
a3a0f8c8 DV |
465 | gp_resources = non_dvr_zeus_resources; |
466 | ||
467 | pr_info("Platform: 4500 - ZEUS, NON_DVR_CAPABLE\n"); | |
468 | break; | |
469 | ||
470 | case FAMILY_4600: | |
471 | { | |
472 | unsigned int chipversion = 0; | |
473 | ||
474 | /* The settop has PCIE but it isn't used, so don't advertise | |
475 | * it*/ | |
476 | platform_features = FFS_CAPABLE | DISPLAY_CAPABLE; | |
a3a0f8c8 DV |
477 | |
478 | /* ASIC version will determine if this is a real CronusLite or | |
479 | * Castrati(Cronus) */ | |
480 | chipversion = asic_read(chipver3) << 24; | |
481 | chipversion |= asic_read(chipver2) << 16; | |
482 | chipversion |= asic_read(chipver1) << 8; | |
483 | chipversion |= asic_read(chipver0); | |
484 | ||
485 | if ((chipversion == CRONUS_10) || (chipversion == CRONUS_11)) | |
486 | asic = ASIC_CRONUS; | |
487 | else | |
488 | asic = ASIC_CRONUSLITE; | |
489 | ||
59dfa2fc DV |
490 | /* Cronus and Cronus Lite have the same register map */ |
491 | set_register_map(CRONUS_IO_BASE, &cronus_register_map); | |
492 | gp_resources = non_dvr_cronuslite_resources; | |
a3a0f8c8 DV |
493 | pr_info("Platform: 4600 - %s, NON_DVR_CAPABLE, " |
494 | "chipversion=0x%08X\n", | |
495 | (asic == ASIC_CRONUS) ? "CRONUS" : "CRONUS LITE", | |
496 | chipversion); | |
497 | break; | |
498 | } | |
499 | case FAMILY_4600VZA: | |
500 | platform_features = FFS_CAPABLE | DISPLAY_CAPABLE; | |
501 | asic = ASIC_CRONUS; | |
59dfa2fc | 502 | set_register_map(CRONUS_IO_BASE, &cronus_register_map); |
a3a0f8c8 DV |
503 | gp_resources = non_dvr_cronus_resources; |
504 | ||
505 | pr_info("Platform: Vz Class A - CRONUS, NON_DVR_CAPABLE\n"); | |
506 | break; | |
507 | ||
508 | case FAMILY_8500: | |
509 | case FAMILY_8500RNG: | |
510 | platform_features = DVR_CAPABLE | PCIE_CAPABLE | | |
511 | DISPLAY_CAPABLE; | |
512 | asic = ASIC_ZEUS; | |
59dfa2fc | 513 | set_register_map(ZEUS_IO_BASE, &zeus_register_map); |
a3a0f8c8 DV |
514 | gp_resources = dvr_zeus_resources; |
515 | ||
516 | pr_info("Platform: 8500/RNG200 - ZEUS, DVR_CAPABLE\n"); | |
517 | break; | |
518 | ||
519 | case FAMILY_8600: | |
520 | case FAMILY_8600VZB: | |
521 | platform_features = DVR_CAPABLE | PCIE_CAPABLE | | |
522 | DISPLAY_CAPABLE; | |
523 | asic = ASIC_CRONUS; | |
59dfa2fc | 524 | set_register_map(CRONUS_IO_BASE, &cronus_register_map); |
a3a0f8c8 DV |
525 | gp_resources = dvr_cronus_resources; |
526 | ||
527 | pr_info("Platform: 8600/Vz Class B - CRONUS, " | |
528 | "DVR_CAPABLE\n"); | |
529 | break; | |
530 | ||
531 | default: | |
532 | pr_crit("Platform: UNKNOWN PLATFORM\n"); | |
533 | break; | |
534 | } | |
535 | ||
536 | switch (asic) { | |
537 | case ASIC_ZEUS: | |
538 | phys_to_bus_offset = 0x30000000; | |
539 | break; | |
540 | case ASIC_CALLIOPE: | |
541 | phys_to_bus_offset = 0x10000000; | |
542 | break; | |
543 | case ASIC_CRONUSLITE: | |
544 | /* Fall through */ | |
545 | case ASIC_CRONUS: | |
546 | /* | |
547 | * TODO: We suppose 0x10000000 aliases into 0x20000000- | |
548 | * 0x2XXXXXXX. If 0x10000000 aliases into 0x60000000- | |
549 | * 0x6XXXXXXX, the offset should be 0x50000000, not 0x10000000. | |
550 | */ | |
551 | phys_to_bus_offset = 0x10000000; | |
552 | break; | |
553 | default: | |
554 | phys_to_bus_offset = 0x00000000; | |
555 | break; | |
556 | } | |
557 | } | |
558 | ||
559 | /** | |
560 | * platform_devices_init - sets up USB device resourse. | |
561 | */ | |
562 | static int __init platform_devices_init(void) | |
563 | { | |
564 | pr_notice("%s: ----- Initializing USB resources -----\n", __func__); | |
565 | ||
566 | asic_resource.start = asic_phy_base; | |
567 | asic_resource.end += asic_resource.start; | |
568 | ||
569 | ehci_resources[0].start = asic_reg_phys_addr(ehci_hcapbase); | |
570 | ehci_resources[0].end += ehci_resources[0].start; | |
571 | ||
572 | ohci_resources[0].start = asic_reg_phys_addr(ohci_hc_revision); | |
573 | ohci_resources[0].end += ohci_resources[0].start; | |
574 | ||
575 | set_io_port_base(0); | |
576 | ||
577 | platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices)); | |
578 | ||
579 | return 0; | |
580 | } | |
581 | ||
582 | arch_initcall(platform_devices_init); | |
583 | ||
584 | /* | |
585 | * | |
586 | * BOOTMEM ALLOCATION | |
587 | * | |
588 | */ | |
589 | /* | |
590 | * Allocates/reserves the Platform memory resources early in the boot process. | |
591 | * This ignores any resources that are designated IORESOURCE_IO | |
592 | */ | |
593 | void __init platform_alloc_bootmem(void) | |
594 | { | |
595 | int i; | |
596 | int total = 0; | |
597 | ||
598 | /* Get persistent memory data from command line before allocating | |
599 | * resources. This need to happen before normal command line parsing | |
600 | * has been done */ | |
601 | pmem_setup_resource(); | |
602 | ||
603 | /* Loop through looking for resources that want a particular address */ | |
604 | for (i = 0; gp_resources[i].flags != 0; i++) { | |
605 | int size = gp_resources[i].end - gp_resources[i].start + 1; | |
606 | if ((gp_resources[i].start != 0) && | |
607 | ((gp_resources[i].flags & IORESOURCE_MEM) != 0)) { | |
608 | reserve_bootmem(bus_to_phys(gp_resources[i].start), | |
609 | size, 0); | |
610 | total += gp_resources[i].end - | |
611 | gp_resources[i].start + 1; | |
612 | pr_info("reserve resource %s at %08x (%u bytes)\n", | |
613 | gp_resources[i].name, gp_resources[i].start, | |
614 | gp_resources[i].end - | |
615 | gp_resources[i].start + 1); | |
616 | } | |
617 | } | |
618 | ||
619 | /* Loop through assigning addresses for those that are left */ | |
620 | for (i = 0; gp_resources[i].flags != 0; i++) { | |
621 | int size = gp_resources[i].end - gp_resources[i].start + 1; | |
622 | if ((gp_resources[i].start == 0) && | |
623 | ((gp_resources[i].flags & IORESOURCE_MEM) != 0)) { | |
624 | void *mem = alloc_bootmem_pages(size); | |
625 | ||
626 | if (mem == NULL) | |
627 | pr_err("Unable to allocate bootmem pages " | |
628 | "for %s\n", gp_resources[i].name); | |
629 | ||
630 | else { | |
631 | gp_resources[i].start = | |
632 | phys_to_bus(virt_to_phys(mem)); | |
633 | gp_resources[i].end = | |
634 | gp_resources[i].start + size - 1; | |
635 | total += size; | |
636 | pr_info("allocate resource %s at %08x " | |
637 | "(%u bytes)\n", | |
638 | gp_resources[i].name, | |
639 | gp_resources[i].start, size); | |
640 | } | |
641 | } | |
642 | } | |
643 | ||
644 | pr_info("Total Platform driver memory allocation: 0x%08x\n", total); | |
645 | ||
646 | /* indicate resources that are platform I/O related */ | |
647 | for (i = 0; gp_resources[i].flags != 0; i++) { | |
648 | if ((gp_resources[i].start != 0) && | |
649 | ((gp_resources[i].flags & IORESOURCE_IO) != 0)) { | |
650 | pr_info("reserved platform resource %s at %08x\n", | |
651 | gp_resources[i].name, gp_resources[i].start); | |
652 | } | |
653 | } | |
654 | } | |
655 | ||
656 | /* | |
657 | * | |
658 | * PERSISTENT MEMORY (PMEM) CONFIGURATION | |
659 | * | |
660 | */ | |
661 | static unsigned long pmemaddr __initdata; | |
662 | ||
663 | static int __init early_param_pmemaddr(char *p) | |
664 | { | |
665 | pmemaddr = (unsigned long)simple_strtoul(p, NULL, 0); | |
666 | return 0; | |
667 | } | |
668 | early_param("pmemaddr", early_param_pmemaddr); | |
669 | ||
670 | static long pmemlen __initdata; | |
671 | ||
672 | static int __init early_param_pmemlen(char *p) | |
673 | { | |
674 | /* TODO: we can use this code when and if the bootloader ever changes this */ | |
675 | #if 0 | |
676 | pmemlen = (unsigned long)simple_strtoul(p, NULL, 0); | |
677 | #else | |
678 | pmemlen = 0x20000; | |
679 | #endif | |
680 | return 0; | |
681 | } | |
682 | early_param("pmemlen", early_param_pmemlen); | |
683 | ||
684 | /* | |
685 | * Set up persistent memory. If we were given values, we patch the array of | |
686 | * resources. Otherwise, persistent memory may be allocated anywhere at all. | |
687 | */ | |
688 | static void __init pmem_setup_resource(void) | |
689 | { | |
690 | struct resource *resource; | |
691 | resource = asic_resource_get("DiagPersistentMemory"); | |
692 | ||
693 | if (resource && pmemaddr && pmemlen) { | |
694 | /* The address provided by bootloader is in kseg0. Convert to | |
695 | * a bus address. */ | |
696 | resource->start = phys_to_bus(pmemaddr - 0x80000000); | |
697 | resource->end = resource->start + pmemlen - 1; | |
698 | ||
699 | pr_info("persistent memory: start=0x%x end=0x%x\n", | |
700 | resource->start, resource->end); | |
701 | } | |
702 | } | |
703 | ||
704 | /* | |
705 | * | |
706 | * RESOURCE ACCESS FUNCTIONS | |
707 | * | |
708 | */ | |
709 | ||
710 | /** | |
711 | * asic_resource_get - retrieves parameters for a platform resource. | |
712 | * @name: string to match resource | |
713 | * | |
714 | * Returns a pointer to a struct resource corresponding to the given name. | |
715 | * | |
716 | * CANNOT BE NAMED platform_resource_get, which would be the obvious choice, | |
717 | * as this function name is already declared | |
718 | */ | |
719 | struct resource *asic_resource_get(const char *name) | |
720 | { | |
721 | int i; | |
722 | ||
723 | for (i = 0; gp_resources[i].flags != 0; i++) { | |
724 | if (strcmp(gp_resources[i].name, name) == 0) | |
725 | return &gp_resources[i]; | |
726 | } | |
727 | ||
728 | return NULL; | |
729 | } | |
730 | EXPORT_SYMBOL(asic_resource_get); | |
731 | ||
732 | /** | |
733 | * platform_release_memory - release pre-allocated memory | |
734 | * @ptr: pointer to memory to release | |
735 | * @size: size of resource | |
736 | * | |
737 | * This must only be called for memory allocated or reserved via the boot | |
738 | * memory allocator. | |
739 | */ | |
740 | void platform_release_memory(void *ptr, int size) | |
741 | { | |
742 | unsigned long addr; | |
743 | unsigned long end; | |
744 | ||
745 | addr = ((unsigned long)ptr + (PAGE_SIZE - 1)) & PAGE_MASK; | |
746 | end = ((unsigned long)ptr + size) & PAGE_MASK; | |
747 | ||
748 | for (; addr < end; addr += PAGE_SIZE) { | |
749 | ClearPageReserved(virt_to_page(__va(addr))); | |
750 | init_page_count(virt_to_page(__va(addr))); | |
751 | free_page((unsigned long)__va(addr)); | |
752 | } | |
753 | } | |
754 | EXPORT_SYMBOL(platform_release_memory); | |
755 | ||
756 | /* | |
757 | * | |
758 | * FEATURE AVAILABILITY FUNCTIONS | |
759 | * | |
760 | */ | |
761 | int platform_supports_dvr(void) | |
762 | { | |
763 | return (platform_features & DVR_CAPABLE) != 0; | |
764 | } | |
765 | ||
766 | int platform_supports_ffs(void) | |
767 | { | |
768 | return (platform_features & FFS_CAPABLE) != 0; | |
769 | } | |
770 | ||
771 | int platform_supports_pcie(void) | |
772 | { | |
773 | return (platform_features & PCIE_CAPABLE) != 0; | |
774 | } | |
775 | ||
776 | int platform_supports_display(void) | |
777 | { | |
778 | return (platform_features & DISPLAY_CAPABLE) != 0; | |
779 | } |