Commit | Line | Data |
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a3a0f8c8 | 1 | /* |
a3a0f8c8 | 2 | * |
51f1336d | 3 | * Description: Defines the platform resources for Gaia-based settops. |
a3a0f8c8 DV |
4 | * |
5 | * Copyright (C) 2005-2009 Scientific-Atlanta, Inc. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | * | |
a3a0f8c8 DV |
21 | * NOTE: The bootloader allocates persistent memory at an address which is |
22 | * 16 MiB below the end of the highest address in KSEG0. All fixed | |
23 | * address memory reservations must avoid this region. | |
24 | */ | |
25 | ||
26 | #include <linux/device.h> | |
27 | #include <linux/kernel.h> | |
28 | #include <linux/init.h> | |
29 | #include <linux/resource.h> | |
30 | #include <linux/serial_reg.h> | |
31 | #include <linux/io.h> | |
32 | #include <linux/bootmem.h> | |
33 | #include <linux/mm.h> | |
34 | #include <linux/platform_device.h> | |
35 | #include <linux/module.h> | |
5a0e3ad6 | 36 | #include <linux/gfp.h> |
a3a0f8c8 DV |
37 | #include <asm/page.h> |
38 | #include <linux/swap.h> | |
39 | #include <linux/highmem.h> | |
40 | #include <linux/dma-mapping.h> | |
41 | ||
42 | #include <asm/mach-powertv/asic.h> | |
43 | #include <asm/mach-powertv/asic_regs.h> | |
44 | #include <asm/mach-powertv/interrupts.h> | |
45 | ||
46 | #ifdef CONFIG_BOOTLOADER_DRIVER | |
47 | #include <asm/mach-powertv/kbldr.h> | |
48 | #endif | |
49 | #include <asm/bootinfo.h> | |
50 | ||
51 | #define BOOTLDRFAMILY(byte1, byte0) (((byte1) << 8) | (byte0)) | |
52 | ||
53 | /* | |
54 | * Forward Prototypes | |
55 | */ | |
56 | static void pmem_setup_resource(void); | |
57 | ||
58 | /* | |
59 | * Global Variables | |
60 | */ | |
61 | enum asic_type asic; | |
62 | ||
63 | unsigned int platform_features; | |
64 | unsigned int platform_family; | |
59dfa2fc DV |
65 | struct register_map _asic_register_map; |
66 | EXPORT_SYMBOL(_asic_register_map); /* Exported for testing */ | |
a3a0f8c8 DV |
67 | unsigned long asic_phy_base; |
68 | unsigned long asic_base; | |
69 | EXPORT_SYMBOL(asic_base); /* Exported for testing */ | |
70 | struct resource *gp_resources; | |
71 | static bool usb_configured; | |
72 | ||
73 | /* | |
74 | * Don't recommend to use it directly, it is usually used by kernel internally. | |
75 | * Portable code should be using interfaces such as ioremp, dma_map_single, etc. | |
76 | */ | |
ca36c36b DV |
77 | unsigned long phys_to_dma_offset; |
78 | EXPORT_SYMBOL(phys_to_dma_offset); | |
a3a0f8c8 DV |
79 | |
80 | /* | |
81 | * | |
82 | * IO Resource Definition | |
83 | * | |
84 | */ | |
85 | ||
86 | struct resource asic_resource = { | |
87 | .name = "ASIC Resource", | |
88 | .start = 0, | |
89 | .end = ASIC_IO_SIZE, | |
90 | .flags = IORESOURCE_MEM, | |
91 | }; | |
92 | ||
93 | /* | |
94 | * | |
95 | * USB Host Resource Definition | |
96 | * | |
97 | */ | |
98 | ||
99 | static struct resource ehci_resources[] = { | |
100 | { | |
101 | .parent = &asic_resource, | |
102 | .start = 0, | |
103 | .end = 0xff, | |
104 | .flags = IORESOURCE_MEM, | |
105 | }, | |
106 | { | |
107 | .start = irq_usbehci, | |
108 | .end = irq_usbehci, | |
109 | .flags = IORESOURCE_IRQ, | |
110 | }, | |
111 | }; | |
112 | ||
113 | static u64 ehci_dmamask = DMA_BIT_MASK(32); | |
114 | ||
115 | static struct platform_device ehci_device = { | |
116 | .name = "powertv-ehci", | |
117 | .id = 0, | |
118 | .num_resources = 2, | |
119 | .resource = ehci_resources, | |
120 | .dev = { | |
121 | .dma_mask = &ehci_dmamask, | |
122 | .coherent_dma_mask = DMA_BIT_MASK(32), | |
123 | }, | |
124 | }; | |
125 | ||
126 | static struct resource ohci_resources[] = { | |
127 | { | |
128 | .parent = &asic_resource, | |
129 | .start = 0, | |
130 | .end = 0xff, | |
131 | .flags = IORESOURCE_MEM, | |
132 | }, | |
133 | { | |
134 | .start = irq_usbohci, | |
135 | .end = irq_usbohci, | |
136 | .flags = IORESOURCE_IRQ, | |
137 | }, | |
138 | }; | |
139 | ||
140 | static u64 ohci_dmamask = DMA_BIT_MASK(32); | |
141 | ||
142 | static struct platform_device ohci_device = { | |
143 | .name = "powertv-ohci", | |
144 | .id = 0, | |
145 | .num_resources = 2, | |
146 | .resource = ohci_resources, | |
147 | .dev = { | |
148 | .dma_mask = &ohci_dmamask, | |
149 | .coherent_dma_mask = DMA_BIT_MASK(32), | |
150 | }, | |
151 | }; | |
152 | ||
153 | static struct platform_device *platform_devices[] = { | |
154 | &ehci_device, | |
155 | &ohci_device, | |
156 | }; | |
157 | ||
158 | /* | |
159 | * | |
160 | * Platform Configuration and Device Initialization | |
161 | * | |
162 | */ | |
163 | static void __init fs_update(int pe, int md, int sdiv, int disable_div_by_3) | |
164 | { | |
165 | int en_prg, byp, pwr, nsb, val; | |
166 | int sout; | |
167 | ||
168 | sout = 1; | |
169 | en_prg = 1; | |
170 | byp = 0; | |
171 | nsb = 1; | |
172 | pwr = 1; | |
173 | ||
174 | val = ((sdiv << 29) | (md << 24) | (pe<<8) | (sout<<3) | (byp<<2) | | |
175 | (nsb<<1) | (disable_div_by_3<<5)); | |
176 | ||
339e658b DV |
177 | asic_write(val, fs432x4b4_usb_ctl); |
178 | asic_write(val | (en_prg<<4), fs432x4b4_usb_ctl); | |
179 | asic_write(val | (en_prg<<4) | pwr, fs432x4b4_usb_ctl); | |
a3a0f8c8 DV |
180 | } |
181 | ||
182 | /* | |
183 | * Allow override of bootloader-specified model | |
184 | */ | |
185 | static char __initdata cmdline[COMMAND_LINE_SIZE]; | |
186 | ||
187 | #define FORCEFAMILY_PARAM "forcefamily" | |
188 | ||
189 | static __init int check_forcefamily(unsigned char forced_family[2]) | |
190 | { | |
191 | const char *p; | |
192 | ||
193 | forced_family[0] = '\0'; | |
194 | forced_family[1] = '\0'; | |
195 | ||
196 | /* Check the command line for a forcefamily directive */ | |
197 | strncpy(cmdline, arcs_cmdline, COMMAND_LINE_SIZE - 1); | |
198 | p = strstr(cmdline, FORCEFAMILY_PARAM); | |
199 | if (p && (p != cmdline) && (*(p - 1) != ' ')) | |
200 | p = strstr(p, " " FORCEFAMILY_PARAM "="); | |
201 | ||
202 | if (p) { | |
203 | p += strlen(FORCEFAMILY_PARAM "="); | |
204 | ||
205 | if (*p == '\0' || *(p + 1) == '\0' || | |
206 | (*(p + 2) != '\0' && *(p + 2) != ' ')) | |
207 | pr_err(FORCEFAMILY_PARAM " must be exactly two " | |
208 | "characters long, ignoring value\n"); | |
209 | ||
210 | else { | |
211 | forced_family[0] = *p; | |
212 | forced_family[1] = *(p + 1); | |
213 | } | |
214 | } | |
215 | ||
216 | return 0; | |
217 | } | |
218 | ||
219 | /* | |
220 | * platform_set_family - determine major platform family type. | |
221 | * | |
222 | * Returns family type; -1 if none | |
223 | * Returns the family type; -1 if none | |
224 | * | |
225 | */ | |
226 | static __init noinline void platform_set_family(void) | |
227 | { | |
228 | #define BOOTLDRFAMILY(byte1, byte0) (((byte1) << 8) | (byte0)) | |
229 | ||
230 | unsigned char forced_family[2]; | |
231 | unsigned short bootldr_family; | |
232 | ||
233 | check_forcefamily(forced_family); | |
234 | ||
235 | if (forced_family[0] != '\0' && forced_family[1] != '\0') | |
236 | bootldr_family = BOOTLDRFAMILY(forced_family[0], | |
237 | forced_family[1]); | |
238 | else { | |
239 | ||
240 | #ifdef CONFIG_BOOTLOADER_DRIVER | |
241 | bootldr_family = (unsigned short) kbldr_GetSWFamily(); | |
242 | #else | |
243 | #if defined(CONFIG_BOOTLOADER_FAMILY) | |
244 | bootldr_family = (unsigned short) BOOTLDRFAMILY( | |
245 | CONFIG_BOOTLOADER_FAMILY[0], | |
246 | CONFIG_BOOTLOADER_FAMILY[1]); | |
247 | #else | |
248 | #error "Unknown Bootloader Family" | |
249 | #endif | |
250 | #endif | |
251 | } | |
252 | ||
253 | pr_info("Bootloader Family = 0x%04X\n", bootldr_family); | |
254 | ||
255 | switch (bootldr_family) { | |
256 | case BOOTLDRFAMILY('R', '1'): | |
257 | platform_family = FAMILY_1500; | |
258 | break; | |
259 | case BOOTLDRFAMILY('4', '4'): | |
260 | platform_family = FAMILY_4500; | |
261 | break; | |
262 | case BOOTLDRFAMILY('4', '6'): | |
263 | platform_family = FAMILY_4600; | |
264 | break; | |
265 | case BOOTLDRFAMILY('A', '1'): | |
266 | platform_family = FAMILY_4600VZA; | |
267 | break; | |
268 | case BOOTLDRFAMILY('8', '5'): | |
269 | platform_family = FAMILY_8500; | |
270 | break; | |
271 | case BOOTLDRFAMILY('R', '2'): | |
272 | platform_family = FAMILY_8500RNG; | |
273 | break; | |
274 | case BOOTLDRFAMILY('8', '6'): | |
275 | platform_family = FAMILY_8600; | |
276 | break; | |
277 | case BOOTLDRFAMILY('B', '1'): | |
278 | platform_family = FAMILY_8600VZB; | |
279 | break; | |
280 | case BOOTLDRFAMILY('E', '1'): | |
281 | platform_family = FAMILY_1500VZE; | |
282 | break; | |
283 | case BOOTLDRFAMILY('F', '1'): | |
284 | platform_family = FAMILY_1500VZF; | |
285 | break; | |
51f1336d DV |
286 | case BOOTLDRFAMILY('8', '7'): |
287 | platform_family = FAMILY_8700; | |
288 | break; | |
a3a0f8c8 DV |
289 | default: |
290 | platform_family = -1; | |
291 | } | |
292 | } | |
293 | ||
294 | unsigned int platform_get_family(void) | |
295 | { | |
296 | return platform_family; | |
297 | } | |
298 | EXPORT_SYMBOL(platform_get_family); | |
299 | ||
300 | /* | |
301 | * \brief usb_eye_configure() for optimizing the USB eye on Calliope. | |
302 | * | |
303 | * \param unsigned int value saved to the register. | |
304 | * | |
305 | * \return none | |
306 | * | |
307 | */ | |
308 | static void __init usb_eye_configure(unsigned int value) | |
309 | { | |
310 | asic_write(asic_read(crt_spare) | value, crt_spare); | |
311 | } | |
312 | ||
313 | /* | |
314 | * platform_get_asic - determine the ASIC type. | |
315 | * | |
316 | * \param none | |
317 | * | |
318 | * \return ASIC type; ASIC_UNKNOWN if none | |
319 | * | |
320 | */ | |
321 | enum asic_type platform_get_asic(void) | |
322 | { | |
323 | return asic; | |
324 | } | |
325 | EXPORT_SYMBOL(platform_get_asic); | |
326 | ||
327 | /* | |
328 | * platform_configure_usb - usb configuration based on platform type. | |
329 | * @bcm1_usb2_ctl: value for the BCM1_USB2_CTL register, which is | |
330 | * quirky | |
331 | */ | |
332 | static void __init platform_configure_usb(void) | |
333 | { | |
334 | u32 bcm1_usb2_ctl; | |
335 | ||
336 | if (usb_configured) | |
337 | return; | |
338 | ||
339 | switch (asic) { | |
340 | case ASIC_ZEUS: | |
a3a0f8c8 DV |
341 | case ASIC_CRONUS: |
342 | case ASIC_CRONUSLITE: | |
343 | fs_update(0x0000, 0x11, 0x02, 0); | |
344 | bcm1_usb2_ctl = 0x803; | |
345 | break; | |
346 | ||
347 | case ASIC_CALLIOPE: | |
348 | fs_update(0x0000, 0x11, 0x02, 1); | |
349 | ||
350 | switch (platform_family) { | |
351 | case FAMILY_1500VZE: | |
352 | break; | |
353 | ||
354 | case FAMILY_1500VZF: | |
355 | usb_eye_configure(0x003c0000); | |
356 | break; | |
357 | ||
358 | default: | |
359 | usb_eye_configure(0x00300000); | |
360 | break; | |
361 | } | |
362 | ||
363 | bcm1_usb2_ctl = 0x803; | |
364 | break; | |
365 | ||
366 | default: | |
367 | pr_err("Unknown ASIC type: %d\n", asic); | |
368 | break; | |
369 | } | |
370 | ||
371 | /* turn on USB power */ | |
372 | asic_write(0, usb2_strap); | |
373 | /* Enable all OHCI interrupts */ | |
374 | asic_write(bcm1_usb2_ctl, usb2_control); | |
375 | /* USB2_STBUS_OBC store32/load32 */ | |
376 | asic_write(3, usb2_stbus_obc); | |
377 | /* USB2_STBUS_MESS_SIZE 2 packets */ | |
378 | asic_write(1, usb2_stbus_mess_size); | |
379 | /* USB2_STBUS_CHUNK_SIZE 2 packets */ | |
380 | asic_write(1, usb2_stbus_chunk_size); | |
381 | ||
382 | usb_configured = true; | |
383 | } | |
384 | ||
385 | /* | |
386 | * Set up the USB EHCI interface | |
387 | */ | |
388 | void platform_configure_usb_ehci() | |
389 | { | |
390 | platform_configure_usb(); | |
391 | } | |
392 | ||
393 | /* | |
394 | * Set up the USB OHCI interface | |
395 | */ | |
396 | void platform_configure_usb_ohci() | |
397 | { | |
398 | platform_configure_usb(); | |
399 | } | |
400 | ||
401 | /* | |
402 | * Shut the USB EHCI interface down--currently a NOP | |
403 | */ | |
404 | void platform_unconfigure_usb_ehci() | |
405 | { | |
406 | } | |
407 | ||
408 | /* | |
409 | * Shut the USB OHCI interface down--currently a NOP | |
410 | */ | |
411 | void platform_unconfigure_usb_ohci() | |
412 | { | |
413 | } | |
414 | ||
59dfa2fc DV |
415 | static void __init set_register_map(unsigned long phys_base, |
416 | const struct register_map *map) | |
417 | { | |
418 | asic_phy_base = phys_base; | |
419 | _asic_register_map = *map; | |
420 | register_map_virtualize(&_asic_register_map); | |
421 | asic_base = (unsigned long)ioremap_nocache(phys_base, ASIC_IO_SIZE); | |
422 | } | |
423 | ||
a3a0f8c8 DV |
424 | /** |
425 | * configure_platform - configuration based on platform type. | |
426 | */ | |
427 | void __init configure_platform(void) | |
428 | { | |
429 | platform_set_family(); | |
430 | ||
431 | switch (platform_family) { | |
432 | case FAMILY_1500: | |
433 | case FAMILY_1500VZE: | |
434 | case FAMILY_1500VZF: | |
435 | platform_features = FFS_CAPABLE; | |
436 | asic = ASIC_CALLIOPE; | |
59dfa2fc | 437 | set_register_map(CALLIOPE_IO_BASE, &calliope_register_map); |
a3a0f8c8 DV |
438 | |
439 | if (platform_family == FAMILY_1500VZE) { | |
440 | gp_resources = non_dvr_vze_calliope_resources; | |
441 | pr_info("Platform: 1500/Vz Class E - " | |
442 | "CALLIOPE, NON_DVR_CAPABLE\n"); | |
443 | } else if (platform_family == FAMILY_1500VZF) { | |
444 | gp_resources = non_dvr_vzf_calliope_resources; | |
445 | pr_info("Platform: 1500/Vz Class F - " | |
446 | "CALLIOPE, NON_DVR_CAPABLE\n"); | |
447 | } else { | |
448 | gp_resources = non_dvr_calliope_resources; | |
449 | pr_info("Platform: 1500/RNG100 - CALLIOPE, " | |
450 | "NON_DVR_CAPABLE\n"); | |
451 | } | |
452 | break; | |
453 | ||
454 | case FAMILY_4500: | |
455 | platform_features = FFS_CAPABLE | PCIE_CAPABLE | | |
456 | DISPLAY_CAPABLE; | |
457 | asic = ASIC_ZEUS; | |
59dfa2fc | 458 | set_register_map(ZEUS_IO_BASE, &zeus_register_map); |
a3a0f8c8 DV |
459 | gp_resources = non_dvr_zeus_resources; |
460 | ||
461 | pr_info("Platform: 4500 - ZEUS, NON_DVR_CAPABLE\n"); | |
462 | break; | |
463 | ||
464 | case FAMILY_4600: | |
465 | { | |
466 | unsigned int chipversion = 0; | |
467 | ||
468 | /* The settop has PCIE but it isn't used, so don't advertise | |
469 | * it*/ | |
470 | platform_features = FFS_CAPABLE | DISPLAY_CAPABLE; | |
a3a0f8c8 | 471 | |
28d7d213 DV |
472 | /* Cronus and Cronus Lite have the same register map */ |
473 | set_register_map(CRONUS_IO_BASE, &cronus_register_map); | |
474 | ||
a3a0f8c8 DV |
475 | /* ASIC version will determine if this is a real CronusLite or |
476 | * Castrati(Cronus) */ | |
477 | chipversion = asic_read(chipver3) << 24; | |
478 | chipversion |= asic_read(chipver2) << 16; | |
479 | chipversion |= asic_read(chipver1) << 8; | |
480 | chipversion |= asic_read(chipver0); | |
481 | ||
482 | if ((chipversion == CRONUS_10) || (chipversion == CRONUS_11)) | |
483 | asic = ASIC_CRONUS; | |
484 | else | |
485 | asic = ASIC_CRONUSLITE; | |
486 | ||
59dfa2fc | 487 | gp_resources = non_dvr_cronuslite_resources; |
a3a0f8c8 DV |
488 | pr_info("Platform: 4600 - %s, NON_DVR_CAPABLE, " |
489 | "chipversion=0x%08X\n", | |
490 | (asic == ASIC_CRONUS) ? "CRONUS" : "CRONUS LITE", | |
491 | chipversion); | |
492 | break; | |
493 | } | |
494 | case FAMILY_4600VZA: | |
495 | platform_features = FFS_CAPABLE | DISPLAY_CAPABLE; | |
496 | asic = ASIC_CRONUS; | |
59dfa2fc | 497 | set_register_map(CRONUS_IO_BASE, &cronus_register_map); |
a3a0f8c8 DV |
498 | gp_resources = non_dvr_cronus_resources; |
499 | ||
500 | pr_info("Platform: Vz Class A - CRONUS, NON_DVR_CAPABLE\n"); | |
501 | break; | |
502 | ||
503 | case FAMILY_8500: | |
504 | case FAMILY_8500RNG: | |
505 | platform_features = DVR_CAPABLE | PCIE_CAPABLE | | |
506 | DISPLAY_CAPABLE; | |
507 | asic = ASIC_ZEUS; | |
59dfa2fc | 508 | set_register_map(ZEUS_IO_BASE, &zeus_register_map); |
a3a0f8c8 DV |
509 | gp_resources = dvr_zeus_resources; |
510 | ||
511 | pr_info("Platform: 8500/RNG200 - ZEUS, DVR_CAPABLE\n"); | |
512 | break; | |
513 | ||
514 | case FAMILY_8600: | |
515 | case FAMILY_8600VZB: | |
516 | platform_features = DVR_CAPABLE | PCIE_CAPABLE | | |
517 | DISPLAY_CAPABLE; | |
518 | asic = ASIC_CRONUS; | |
59dfa2fc | 519 | set_register_map(CRONUS_IO_BASE, &cronus_register_map); |
a3a0f8c8 DV |
520 | gp_resources = dvr_cronus_resources; |
521 | ||
522 | pr_info("Platform: 8600/Vz Class B - CRONUS, " | |
523 | "DVR_CAPABLE\n"); | |
524 | break; | |
525 | ||
51f1336d DV |
526 | case FAMILY_8700: |
527 | platform_features = FFS_CAPABLE | PCIE_CAPABLE; | |
528 | asic = ASIC_GAIA; | |
529 | set_register_map(GAIA_IO_BASE, &gaia_register_map); | |
530 | gp_resources = dvr_gaia_resources; | |
531 | ||
532 | pr_info("Platform: 8700 - GAIA, DVR_CAPABLE\n"); | |
533 | break; | |
534 | ||
a3a0f8c8 DV |
535 | default: |
536 | pr_crit("Platform: UNKNOWN PLATFORM\n"); | |
537 | break; | |
538 | } | |
539 | ||
540 | switch (asic) { | |
541 | case ASIC_ZEUS: | |
ca36c36b | 542 | phys_to_dma_offset = 0x30000000; |
a3a0f8c8 DV |
543 | break; |
544 | case ASIC_CALLIOPE: | |
ca36c36b | 545 | phys_to_dma_offset = 0x10000000; |
a3a0f8c8 DV |
546 | break; |
547 | case ASIC_CRONUSLITE: | |
548 | /* Fall through */ | |
549 | case ASIC_CRONUS: | |
550 | /* | |
551 | * TODO: We suppose 0x10000000 aliases into 0x20000000- | |
552 | * 0x2XXXXXXX. If 0x10000000 aliases into 0x60000000- | |
553 | * 0x6XXXXXXX, the offset should be 0x50000000, not 0x10000000. | |
554 | */ | |
ca36c36b | 555 | phys_to_dma_offset = 0x10000000; |
a3a0f8c8 DV |
556 | break; |
557 | default: | |
ca36c36b | 558 | phys_to_dma_offset = 0x00000000; |
a3a0f8c8 DV |
559 | break; |
560 | } | |
561 | } | |
562 | ||
563 | /** | |
564 | * platform_devices_init - sets up USB device resourse. | |
565 | */ | |
566 | static int __init platform_devices_init(void) | |
567 | { | |
568 | pr_notice("%s: ----- Initializing USB resources -----\n", __func__); | |
569 | ||
570 | asic_resource.start = asic_phy_base; | |
571 | asic_resource.end += asic_resource.start; | |
572 | ||
573 | ehci_resources[0].start = asic_reg_phys_addr(ehci_hcapbase); | |
574 | ehci_resources[0].end += ehci_resources[0].start; | |
575 | ||
576 | ohci_resources[0].start = asic_reg_phys_addr(ohci_hc_revision); | |
577 | ohci_resources[0].end += ohci_resources[0].start; | |
578 | ||
579 | set_io_port_base(0); | |
580 | ||
581 | platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices)); | |
582 | ||
583 | return 0; | |
584 | } | |
585 | ||
586 | arch_initcall(platform_devices_init); | |
587 | ||
588 | /* | |
589 | * | |
590 | * BOOTMEM ALLOCATION | |
591 | * | |
592 | */ | |
593 | /* | |
594 | * Allocates/reserves the Platform memory resources early in the boot process. | |
595 | * This ignores any resources that are designated IORESOURCE_IO | |
596 | */ | |
597 | void __init platform_alloc_bootmem(void) | |
598 | { | |
599 | int i; | |
600 | int total = 0; | |
601 | ||
602 | /* Get persistent memory data from command line before allocating | |
603 | * resources. This need to happen before normal command line parsing | |
604 | * has been done */ | |
605 | pmem_setup_resource(); | |
606 | ||
607 | /* Loop through looking for resources that want a particular address */ | |
608 | for (i = 0; gp_resources[i].flags != 0; i++) { | |
609 | int size = gp_resources[i].end - gp_resources[i].start + 1; | |
610 | if ((gp_resources[i].start != 0) && | |
611 | ((gp_resources[i].flags & IORESOURCE_MEM) != 0)) { | |
ca36c36b | 612 | reserve_bootmem(dma_to_phys(gp_resources[i].start), |
a3a0f8c8 DV |
613 | size, 0); |
614 | total += gp_resources[i].end - | |
615 | gp_resources[i].start + 1; | |
616 | pr_info("reserve resource %s at %08x (%u bytes)\n", | |
617 | gp_resources[i].name, gp_resources[i].start, | |
618 | gp_resources[i].end - | |
619 | gp_resources[i].start + 1); | |
620 | } | |
621 | } | |
622 | ||
623 | /* Loop through assigning addresses for those that are left */ | |
624 | for (i = 0; gp_resources[i].flags != 0; i++) { | |
625 | int size = gp_resources[i].end - gp_resources[i].start + 1; | |
626 | if ((gp_resources[i].start == 0) && | |
627 | ((gp_resources[i].flags & IORESOURCE_MEM) != 0)) { | |
628 | void *mem = alloc_bootmem_pages(size); | |
629 | ||
630 | if (mem == NULL) | |
631 | pr_err("Unable to allocate bootmem pages " | |
632 | "for %s\n", gp_resources[i].name); | |
633 | ||
634 | else { | |
635 | gp_resources[i].start = | |
ca36c36b | 636 | phys_to_dma(virt_to_phys(mem)); |
a3a0f8c8 DV |
637 | gp_resources[i].end = |
638 | gp_resources[i].start + size - 1; | |
639 | total += size; | |
640 | pr_info("allocate resource %s at %08x " | |
641 | "(%u bytes)\n", | |
642 | gp_resources[i].name, | |
643 | gp_resources[i].start, size); | |
644 | } | |
645 | } | |
646 | } | |
647 | ||
648 | pr_info("Total Platform driver memory allocation: 0x%08x\n", total); | |
649 | ||
650 | /* indicate resources that are platform I/O related */ | |
651 | for (i = 0; gp_resources[i].flags != 0; i++) { | |
652 | if ((gp_resources[i].start != 0) && | |
653 | ((gp_resources[i].flags & IORESOURCE_IO) != 0)) { | |
654 | pr_info("reserved platform resource %s at %08x\n", | |
655 | gp_resources[i].name, gp_resources[i].start); | |
656 | } | |
657 | } | |
658 | } | |
659 | ||
660 | /* | |
661 | * | |
662 | * PERSISTENT MEMORY (PMEM) CONFIGURATION | |
663 | * | |
664 | */ | |
665 | static unsigned long pmemaddr __initdata; | |
666 | ||
667 | static int __init early_param_pmemaddr(char *p) | |
668 | { | |
669 | pmemaddr = (unsigned long)simple_strtoul(p, NULL, 0); | |
670 | return 0; | |
671 | } | |
672 | early_param("pmemaddr", early_param_pmemaddr); | |
673 | ||
674 | static long pmemlen __initdata; | |
675 | ||
676 | static int __init early_param_pmemlen(char *p) | |
677 | { | |
678 | /* TODO: we can use this code when and if the bootloader ever changes this */ | |
679 | #if 0 | |
680 | pmemlen = (unsigned long)simple_strtoul(p, NULL, 0); | |
681 | #else | |
682 | pmemlen = 0x20000; | |
683 | #endif | |
684 | return 0; | |
685 | } | |
686 | early_param("pmemlen", early_param_pmemlen); | |
687 | ||
688 | /* | |
689 | * Set up persistent memory. If we were given values, we patch the array of | |
690 | * resources. Otherwise, persistent memory may be allocated anywhere at all. | |
691 | */ | |
692 | static void __init pmem_setup_resource(void) | |
693 | { | |
694 | struct resource *resource; | |
695 | resource = asic_resource_get("DiagPersistentMemory"); | |
696 | ||
697 | if (resource && pmemaddr && pmemlen) { | |
698 | /* The address provided by bootloader is in kseg0. Convert to | |
699 | * a bus address. */ | |
ca36c36b | 700 | resource->start = phys_to_dma(pmemaddr - 0x80000000); |
a3a0f8c8 DV |
701 | resource->end = resource->start + pmemlen - 1; |
702 | ||
703 | pr_info("persistent memory: start=0x%x end=0x%x\n", | |
704 | resource->start, resource->end); | |
705 | } | |
706 | } | |
707 | ||
708 | /* | |
709 | * | |
710 | * RESOURCE ACCESS FUNCTIONS | |
711 | * | |
712 | */ | |
713 | ||
714 | /** | |
715 | * asic_resource_get - retrieves parameters for a platform resource. | |
716 | * @name: string to match resource | |
717 | * | |
718 | * Returns a pointer to a struct resource corresponding to the given name. | |
719 | * | |
720 | * CANNOT BE NAMED platform_resource_get, which would be the obvious choice, | |
721 | * as this function name is already declared | |
722 | */ | |
723 | struct resource *asic_resource_get(const char *name) | |
724 | { | |
725 | int i; | |
726 | ||
727 | for (i = 0; gp_resources[i].flags != 0; i++) { | |
728 | if (strcmp(gp_resources[i].name, name) == 0) | |
729 | return &gp_resources[i]; | |
730 | } | |
731 | ||
732 | return NULL; | |
733 | } | |
734 | EXPORT_SYMBOL(asic_resource_get); | |
735 | ||
736 | /** | |
737 | * platform_release_memory - release pre-allocated memory | |
738 | * @ptr: pointer to memory to release | |
739 | * @size: size of resource | |
740 | * | |
741 | * This must only be called for memory allocated or reserved via the boot | |
742 | * memory allocator. | |
743 | */ | |
744 | void platform_release_memory(void *ptr, int size) | |
745 | { | |
746 | unsigned long addr; | |
747 | unsigned long end; | |
748 | ||
749 | addr = ((unsigned long)ptr + (PAGE_SIZE - 1)) & PAGE_MASK; | |
750 | end = ((unsigned long)ptr + size) & PAGE_MASK; | |
751 | ||
752 | for (; addr < end; addr += PAGE_SIZE) { | |
753 | ClearPageReserved(virt_to_page(__va(addr))); | |
754 | init_page_count(virt_to_page(__va(addr))); | |
755 | free_page((unsigned long)__va(addr)); | |
756 | } | |
757 | } | |
758 | EXPORT_SYMBOL(platform_release_memory); | |
759 | ||
760 | /* | |
761 | * | |
762 | * FEATURE AVAILABILITY FUNCTIONS | |
763 | * | |
764 | */ | |
765 | int platform_supports_dvr(void) | |
766 | { | |
767 | return (platform_features & DVR_CAPABLE) != 0; | |
768 | } | |
769 | ||
770 | int platform_supports_ffs(void) | |
771 | { | |
772 | return (platform_features & FFS_CAPABLE) != 0; | |
773 | } | |
774 | ||
775 | int platform_supports_pcie(void) | |
776 | { | |
777 | return (platform_features & PCIE_CAPABLE) != 0; | |
778 | } | |
779 | ||
780 | int platform_supports_display(void) | |
781 | { | |
782 | return (platform_features & DISPLAY_CAPABLE) != 0; | |
783 | } |