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-rw-r--r--arch/mips/powertv/asic/asic_devices.c549
1 files changed, 0 insertions, 549 deletions
diff --git a/arch/mips/powertv/asic/asic_devices.c b/arch/mips/powertv/asic/asic_devices.c
deleted file mode 100644
index 8380605d597d..000000000000
--- a/arch/mips/powertv/asic/asic_devices.c
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@@ -1,549 +0,0 @@
1/*
2 *
3 * Description: Defines the platform resources for Gaia-based settops.
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 *
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>
36#include <asm/page.h>
37#include <linux/swap.h>
38#include <linux/highmem.h>
39#include <linux/dma-mapping.h>
40
41#include <asm/mach-powertv/asic.h>
42#include <asm/mach-powertv/asic_regs.h>
43#include <asm/mach-powertv/interrupts.h>
44
45#ifdef CONFIG_BOOTLOADER_DRIVER
46#include <asm/mach-powertv/kbldr.h>
47#endif
48#include <asm/bootinfo.h>
49
50#define BOOTLDRFAMILY(byte1, byte0) (((byte1) << 8) | (byte0))
51
52/*
53 * Forward Prototypes
54 */
55static void pmem_setup_resource(void);
56
57/*
58 * Global Variables
59 */
60enum asic_type asic;
61
62unsigned int platform_features;
63unsigned int platform_family;
64struct register_map _asic_register_map;
65EXPORT_SYMBOL(_asic_register_map); /* Exported for testing */
66unsigned long asic_phy_base;
67unsigned long asic_base;
68EXPORT_SYMBOL(asic_base); /* Exported for testing */
69struct resource *gp_resources;
70
71/*
72 * Don't recommend to use it directly, it is usually used by kernel internally.
73 * Portable code should be using interfaces such as ioremp, dma_map_single, etc.
74 */
75unsigned long phys_to_dma_offset;
76EXPORT_SYMBOL(phys_to_dma_offset);
77
78/*
79 *
80 * IO Resource Definition
81 *
82 */
83
84struct resource asic_resource = {
85 .name = "ASIC Resource",
86 .start = 0,
87 .end = ASIC_IO_SIZE,
88 .flags = IORESOURCE_MEM,
89};
90
91/*
92 * Allow override of bootloader-specified model
93 * Returns zero on success, a negative errno value on failure. This parameter
94 * allows overriding of the bootloader-specified model.
95 */
96static char __initdata cmdline[COMMAND_LINE_SIZE];
97
98#define FORCEFAMILY_PARAM "forcefamily"
99
100/*
101 * check_forcefamily - check for, and parse, forcefamily command line parameter
102 * @forced_family: Pointer to two-character array in which to store the
103 * value of the forcedfamily parameter, if any.
104 */
105static __init int check_forcefamily(unsigned char forced_family[2])
106{
107 const char *p;
108
109 forced_family[0] = '\0';
110 forced_family[1] = '\0';
111
112 /* Check the command line for a forcefamily directive */
113 strncpy(cmdline, arcs_cmdline, COMMAND_LINE_SIZE - 1);
114 p = strstr(cmdline, FORCEFAMILY_PARAM);
115 if (p && (p != cmdline) && (*(p - 1) != ' '))
116 p = strstr(p, " " FORCEFAMILY_PARAM "=");
117
118 if (p) {
119 p += strlen(FORCEFAMILY_PARAM "=");
120
121 if (*p == '\0' || *(p + 1) == '\0' ||
122 (*(p + 2) != '\0' && *(p + 2) != ' '))
123 pr_err(FORCEFAMILY_PARAM " must be exactly two "
124 "characters long, ignoring value\n");
125
126 else {
127 forced_family[0] = *p;
128 forced_family[1] = *(p + 1);
129 }
130 }
131
132 return 0;
133}
134
135/*
136 * platform_set_family - determine major platform family type.
137 *
138 * Returns family type; -1 if none
139 * Returns the family type; -1 if none
140 *
141 */
142static __init noinline void platform_set_family(void)
143{
144 unsigned char forced_family[2];
145 unsigned short bootldr_family;
146
147 if (check_forcefamily(forced_family) == 0)
148 bootldr_family = BOOTLDRFAMILY(forced_family[0],
149 forced_family[1]);
150 else
151 bootldr_family = (unsigned short) BOOTLDRFAMILY(
152 CONFIG_BOOTLOADER_FAMILY[0],
153 CONFIG_BOOTLOADER_FAMILY[1]);
154
155 pr_info("Bootloader Family = 0x%04X\n", bootldr_family);
156
157 switch (bootldr_family) {
158 case BOOTLDRFAMILY('R', '1'):
159 platform_family = FAMILY_1500;
160 break;
161 case BOOTLDRFAMILY('4', '4'):
162 platform_family = FAMILY_4500;
163 break;
164 case BOOTLDRFAMILY('4', '6'):
165 platform_family = FAMILY_4600;
166 break;
167 case BOOTLDRFAMILY('A', '1'):
168 platform_family = FAMILY_4600VZA;
169 break;
170 case BOOTLDRFAMILY('8', '5'):
171 platform_family = FAMILY_8500;
172 break;
173 case BOOTLDRFAMILY('R', '2'):
174 platform_family = FAMILY_8500RNG;
175 break;
176 case BOOTLDRFAMILY('8', '6'):
177 platform_family = FAMILY_8600;
178 break;
179 case BOOTLDRFAMILY('B', '1'):
180 platform_family = FAMILY_8600VZB;
181 break;
182 case BOOTLDRFAMILY('E', '1'):
183 platform_family = FAMILY_1500VZE;
184 break;
185 case BOOTLDRFAMILY('F', '1'):
186 platform_family = FAMILY_1500VZF;
187 break;
188 case BOOTLDRFAMILY('8', '7'):
189 platform_family = FAMILY_8700;
190 break;
191 default:
192 platform_family = -1;
193 }
194}
195
196unsigned int platform_get_family(void)
197{
198 return platform_family;
199}
200EXPORT_SYMBOL(platform_get_family);
201
202/*
203 * platform_get_asic - determine the ASIC type.
204 *
205 * Returns the ASIC type, or ASIC_UNKNOWN if unknown
206 *
207 */
208enum asic_type platform_get_asic(void)
209{
210 return asic;
211}
212EXPORT_SYMBOL(platform_get_asic);
213
214/*
215 * set_register_map - set ASIC register configuration
216 * @phys_base: Physical address of the base of the ASIC registers
217 * @map: Description of key ASIC registers
218 */
219static void __init set_register_map(unsigned long phys_base,
220 const struct register_map *map)
221{
222 asic_phy_base = phys_base;
223 _asic_register_map = *map;
224 register_map_virtualize(&_asic_register_map);
225 asic_base = (unsigned long)ioremap_nocache(phys_base, ASIC_IO_SIZE);
226}
227
228/**
229 * configure_platform - configuration based on platform type.
230 */
231void __init configure_platform(void)
232{
233 platform_set_family();
234
235 switch (platform_family) {
236 case FAMILY_1500:
237 case FAMILY_1500VZE:
238 case FAMILY_1500VZF:
239 platform_features = FFS_CAPABLE;
240 asic = ASIC_CALLIOPE;
241 set_register_map(CALLIOPE_IO_BASE, &calliope_register_map);
242
243 if (platform_family == FAMILY_1500VZE) {
244 gp_resources = non_dvr_vze_calliope_resources;
245 pr_info("Platform: 1500/Vz Class E - "
246 "CALLIOPE, NON_DVR_CAPABLE\n");
247 } else if (platform_family == FAMILY_1500VZF) {
248 gp_resources = non_dvr_vzf_calliope_resources;
249 pr_info("Platform: 1500/Vz Class F - "
250 "CALLIOPE, NON_DVR_CAPABLE\n");
251 } else {
252 gp_resources = non_dvr_calliope_resources;
253 pr_info("Platform: 1500/RNG100 - CALLIOPE, "
254 "NON_DVR_CAPABLE\n");
255 }
256 break;
257
258 case FAMILY_4500:
259 platform_features = FFS_CAPABLE | PCIE_CAPABLE |
260 DISPLAY_CAPABLE;
261 asic = ASIC_ZEUS;
262 set_register_map(ZEUS_IO_BASE, &zeus_register_map);
263 gp_resources = non_dvr_zeus_resources;
264
265 pr_info("Platform: 4500 - ZEUS, NON_DVR_CAPABLE\n");
266 break;
267
268 case FAMILY_4600:
269 {
270 unsigned int chipversion = 0;
271
272 /* The settop has PCIE but it isn't used, so don't advertise
273 * it*/
274 platform_features = FFS_CAPABLE | DISPLAY_CAPABLE;
275
276 /* Cronus and Cronus Lite have the same register map */
277 set_register_map(CRONUS_IO_BASE, &cronus_register_map);
278
279 /* ASIC version will determine if this is a real CronusLite or
280 * Castrati(Cronus) */
281 chipversion = asic_read(chipver3) << 24;
282 chipversion |= asic_read(chipver2) << 16;
283 chipversion |= asic_read(chipver1) << 8;
284 chipversion |= asic_read(chipver0);
285
286 if ((chipversion == CRONUS_10) || (chipversion == CRONUS_11))
287 asic = ASIC_CRONUS;
288 else
289 asic = ASIC_CRONUSLITE;
290
291 gp_resources = non_dvr_cronuslite_resources;
292 pr_info("Platform: 4600 - %s, NON_DVR_CAPABLE, "
293 "chipversion=0x%08X\n",
294 (asic == ASIC_CRONUS) ? "CRONUS" : "CRONUS LITE",
295 chipversion);
296 break;
297 }
298 case FAMILY_4600VZA:
299 platform_features = FFS_CAPABLE | DISPLAY_CAPABLE;
300 asic = ASIC_CRONUS;
301 set_register_map(CRONUS_IO_BASE, &cronus_register_map);
302 gp_resources = non_dvr_cronus_resources;
303
304 pr_info("Platform: Vz Class A - CRONUS, NON_DVR_CAPABLE\n");
305 break;
306
307 case FAMILY_8500:
308 case FAMILY_8500RNG:
309 platform_features = DVR_CAPABLE | PCIE_CAPABLE |
310 DISPLAY_CAPABLE;
311 asic = ASIC_ZEUS;
312 set_register_map(ZEUS_IO_BASE, &zeus_register_map);
313 gp_resources = dvr_zeus_resources;
314
315 pr_info("Platform: 8500/RNG200 - ZEUS, DVR_CAPABLE\n");
316 break;
317
318 case FAMILY_8600:
319 case FAMILY_8600VZB:
320 platform_features = DVR_CAPABLE | PCIE_CAPABLE |
321 DISPLAY_CAPABLE;
322 asic = ASIC_CRONUS;
323 set_register_map(CRONUS_IO_BASE, &cronus_register_map);
324 gp_resources = dvr_cronus_resources;
325
326 pr_info("Platform: 8600/Vz Class B - CRONUS, "
327 "DVR_CAPABLE\n");
328 break;
329
330 case FAMILY_8700:
331 platform_features = FFS_CAPABLE | PCIE_CAPABLE;
332 asic = ASIC_GAIA;
333 set_register_map(GAIA_IO_BASE, &gaia_register_map);
334 gp_resources = dvr_gaia_resources;
335
336 pr_info("Platform: 8700 - GAIA, DVR_CAPABLE\n");
337 break;
338
339 default:
340 pr_crit("Platform: UNKNOWN PLATFORM\n");
341 break;
342 }
343
344 switch (asic) {
345 case ASIC_ZEUS:
346 phys_to_dma_offset = 0x30000000;
347 break;
348 case ASIC_CALLIOPE:
349 phys_to_dma_offset = 0x10000000;
350 break;
351 case ASIC_CRONUSLITE:
352 /* Fall through */
353 case ASIC_CRONUS:
354 /*
355 * TODO: We suppose 0x10000000 aliases into 0x20000000-
356 * 0x2XXXXXXX. If 0x10000000 aliases into 0x60000000-
357 * 0x6XXXXXXX, the offset should be 0x50000000, not 0x10000000.
358 */
359 phys_to_dma_offset = 0x10000000;
360 break;
361 default:
362 phys_to_dma_offset = 0x00000000;
363 break;
364 }
365}
366
367/*
368 * RESOURCE ALLOCATION
369 *
370 */
371/*
372 * Allocates/reserves the Platform memory resources early in the boot process.
373 * This ignores any resources that are designated IORESOURCE_IO
374 */
375void __init platform_alloc_bootmem(void)
376{
377 int i;
378 int total = 0;
379
380 /* Get persistent memory data from command line before allocating
381 * resources. This need to happen before normal command line parsing
382 * has been done */
383 pmem_setup_resource();
384
385 /* Loop through looking for resources that want a particular address */
386 for (i = 0; gp_resources[i].flags != 0; i++) {
387 int size = resource_size(&gp_resources[i]);
388 if ((gp_resources[i].start != 0) &&
389 ((gp_resources[i].flags & IORESOURCE_MEM) != 0)) {
390 reserve_bootmem(dma_to_phys(gp_resources[i].start),
391 size, 0);
392 total += resource_size(&gp_resources[i]);
393 pr_info("reserve resource %s at %08x (%u bytes)\n",
394 gp_resources[i].name, gp_resources[i].start,
395 resource_size(&gp_resources[i]));
396 }
397 }
398
399 /* Loop through assigning addresses for those that are left */
400 for (i = 0; gp_resources[i].flags != 0; i++) {
401 int size = resource_size(&gp_resources[i]);
402 if ((gp_resources[i].start == 0) &&
403 ((gp_resources[i].flags & IORESOURCE_MEM) != 0)) {
404 void *mem = alloc_bootmem_pages(size);
405
406 if (mem == NULL)
407 pr_err("Unable to allocate bootmem pages "
408 "for %s\n", gp_resources[i].name);
409
410 else {
411 gp_resources[i].start =
412 phys_to_dma(virt_to_phys(mem));
413 gp_resources[i].end =
414 gp_resources[i].start + size - 1;
415 total += size;
416 pr_info("allocate resource %s at %08x "
417 "(%u bytes)\n",
418 gp_resources[i].name,
419 gp_resources[i].start, size);
420 }
421 }
422 }
423
424 pr_info("Total Platform driver memory allocation: 0x%08x\n", total);
425
426 /* indicate resources that are platform I/O related */
427 for (i = 0; gp_resources[i].flags != 0; i++) {
428 if ((gp_resources[i].start != 0) &&
429 ((gp_resources[i].flags & IORESOURCE_IO) != 0)) {
430 pr_info("reserved platform resource %s at %08x\n",
431 gp_resources[i].name, gp_resources[i].start);
432 }
433 }
434}
435
436/*
437 *
438 * PERSISTENT MEMORY (PMEM) CONFIGURATION
439 *
440 */
441static unsigned long pmemaddr __initdata;
442
443static int __init early_param_pmemaddr(char *p)
444{
445 pmemaddr = (unsigned long)simple_strtoul(p, NULL, 0);
446 return 0;
447}
448early_param("pmemaddr", early_param_pmemaddr);
449
450static long pmemlen __initdata;
451
452static int __init early_param_pmemlen(char *p)
453{
454/* TODO: we can use this code when and if the bootloader ever changes this */
455#if 0
456 pmemlen = (unsigned long)simple_strtoul(p, NULL, 0);
457#else
458 pmemlen = 0x20000;
459#endif
460 return 0;
461}
462early_param("pmemlen", early_param_pmemlen);
463
464/*
465 * Set up persistent memory. If we were given values, we patch the array of
466 * resources. Otherwise, persistent memory may be allocated anywhere at all.
467 */
468static void __init pmem_setup_resource(void)
469{
470 struct resource *resource;
471 resource = asic_resource_get("DiagPersistentMemory");
472
473 if (resource && pmemaddr && pmemlen) {
474 /* The address provided by bootloader is in kseg0. Convert to
475 * a bus address. */
476 resource->start = phys_to_dma(pmemaddr - 0x80000000);
477 resource->end = resource->start + pmemlen - 1;
478
479 pr_info("persistent memory: start=0x%x end=0x%x\n",
480 resource->start, resource->end);
481 }
482}
483
484/*
485 *
486 * RESOURCE ACCESS FUNCTIONS
487 *
488 */
489
490/**
491 * asic_resource_get - retrieves parameters for a platform resource.
492 * @name: string to match resource
493 *
494 * Returns a pointer to a struct resource corresponding to the given name.
495 *
496 * CANNOT BE NAMED platform_resource_get, which would be the obvious choice,
497 * as this function name is already declared
498 */
499struct resource *asic_resource_get(const char *name)
500{
501 int i;
502
503 for (i = 0; gp_resources[i].flags != 0; i++) {
504 if (strcmp(gp_resources[i].name, name) == 0)
505 return &gp_resources[i];
506 }
507
508 return NULL;
509}
510EXPORT_SYMBOL(asic_resource_get);
511
512/**
513 * platform_release_memory - release pre-allocated memory
514 * @ptr: pointer to memory to release
515 * @size: size of resource
516 *
517 * This must only be called for memory allocated or reserved via the boot
518 * memory allocator.
519 */
520void platform_release_memory(void *ptr, int size)
521{
522 free_reserved_area(ptr, ptr + size, -1, NULL);
523}
524EXPORT_SYMBOL(platform_release_memory);
525
526/*
527 *
528 * FEATURE AVAILABILITY FUNCTIONS
529 *
530 */
531int platform_supports_dvr(void)
532{
533 return (platform_features & DVR_CAPABLE) != 0;
534}
535
536int platform_supports_ffs(void)
537{
538 return (platform_features & FFS_CAPABLE) != 0;
539}
540
541int platform_supports_pcie(void)
542{
543 return (platform_features & PCIE_CAPABLE) != 0;
544}
545
546int platform_supports_display(void)
547{
548 return (platform_features & DISPLAY_CAPABLE) != 0;
549}
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