1 /* Blackfin External Bus Interface Unit (EBIU) Asynchronous Memory Controller
4 Copyright (C) 2010-2016 Free Software Foundation, Inc.
5 Contributed by Analog Devices, Inc.
7 This file is part of simulators.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "dv-bfin_ebiu_amc.h"
32 bu32 bank_base, bank_size;
33 unsigned (*io_write) (struct hw *, const void *, int, address_word,
34 unsigned, struct bfin_ebiu_amc *, bu32, bu32);
35 unsigned (*io_read) (struct hw *, void *, int, address_word, unsigned,
36 struct bfin_ebiu_amc *, bu32, void *, bu16 *, bu32 *);
39 /* Order after here is important -- matches hardware MMR layout. */
40 bu16 BFIN_MMR_16(amgctl);
43 bu32 ambctl0, ambctl1;
45 bu16 BFIN_MMR_16(mode);
46 bu16 BFIN_MMR_16(fctl);
49 bu32 ambctl0, ambctl1;
52 bu32 ambctl0, ambctl1;
53 bu32 mbsctl, arbstat, mode, fctl;
57 #define mmr_base() offsetof(struct bfin_ebiu_amc, amgctl)
58 #define mmr_offset(mmr) (offsetof(struct bfin_ebiu_amc, mmr) - mmr_base())
59 #define mmr_idx(mmr) (mmr_offset (mmr) / 4)
61 static const char * const bf50x_mmr_names[] =
63 "EBIU_AMGCTL", "EBIU_AMBCTL0", "EBIU_AMBCTL1",
64 [mmr_idx (bf50x.mode)] = "EBIU_MODE", "EBIU_FCTL",
66 static const char * const bf53x_mmr_names[] =
68 "EBIU_AMGCTL", "EBIU_AMBCTL0", "EBIU_AMBCTL1",
70 static const char * const bf54x_mmr_names[] =
72 "EBIU_AMGCTL", "EBIU_AMBCTL0", "EBIU_AMBCTL1",
73 "EBIU_MSBCTL", "EBIU_ARBSTAT", "EBIU_MODE", "EBIU_FCTL",
75 static const char * const *mmr_names;
76 #define mmr_name(off) (mmr_names[(off) / 4] ? : "<INV>")
79 bfin_ebiu_amc_write_amgctl (struct hw *me, struct bfin_ebiu_amc *amc,
82 bu32 amben_old, amben, addr, i;
84 amben_old = min ((amc->amgctl >> 1) & 0x7, 4);
85 amben = min ((amgctl >> 1) & 0x7, 4);
87 HW_TRACE ((me, "reattaching banks: AMGCTL 0x%04x[%u] -> 0x%04x[%u]",
88 amc->amgctl, amben_old, amgctl, amben));
90 for (i = 0; i < 4; ++i)
92 addr = amc->bank_base + i * amc->bank_size;
96 HW_TRACE ((me, "detaching bank %u (%#x base)", i, addr));
97 sim_core_detach (hw_system (me), NULL, 0, 0, addr);
102 struct hw *slave = amc->slaves[i];
104 HW_TRACE ((me, "attaching bank %u (%#x base) to %s", i, addr,
105 slave ? hw_path (slave) : "<floating pins>"));
107 sim_core_attach (hw_system (me), NULL, 0, access_read_write_exec,
108 0, addr, amc->bank_size, 0, slave, NULL);
112 amc->amgctl = amgctl;
116 bf50x_ebiu_amc_io_write_buffer (struct hw *me, const void *source, int space,
117 address_word addr, unsigned nr_bytes,
118 struct bfin_ebiu_amc *amc, bu32 mmr_off,
123 case mmr_offset(amgctl):
124 if (!dv_bfin_mmr_require_16 (me, addr, nr_bytes, true))
126 bfin_ebiu_amc_write_amgctl (me, amc, value);
128 case mmr_offset(bf50x.ambctl0):
129 amc->bf50x.ambctl0 = value;
131 case mmr_offset(bf50x.ambctl1):
132 amc->bf50x.ambctl1 = value;
134 case mmr_offset(bf50x.mode):
135 /* XXX: implement this. */
136 if (!dv_bfin_mmr_require_16 (me, addr, nr_bytes, true))
139 case mmr_offset(bf50x.fctl):
140 /* XXX: implement this. */
141 if (!dv_bfin_mmr_require_16 (me, addr, nr_bytes, true))
145 dv_bfin_mmr_invalid (me, addr, nr_bytes, true);
153 bf53x_ebiu_amc_io_write_buffer (struct hw *me, const void *source, int space,
154 address_word addr, unsigned nr_bytes,
155 struct bfin_ebiu_amc *amc, bu32 mmr_off,
160 case mmr_offset(amgctl):
161 if (!dv_bfin_mmr_require_16 (me, addr, nr_bytes, true))
163 bfin_ebiu_amc_write_amgctl (me, amc, value);
165 case mmr_offset(bf53x.ambctl0):
166 amc->bf53x.ambctl0 = value;
168 case mmr_offset(bf53x.ambctl1):
169 amc->bf53x.ambctl1 = value;
172 dv_bfin_mmr_invalid (me, addr, nr_bytes, true);
180 bf54x_ebiu_amc_io_write_buffer (struct hw *me, const void *source, int space,
181 address_word addr, unsigned nr_bytes,
182 struct bfin_ebiu_amc *amc, bu32 mmr_off,
187 case mmr_offset(amgctl):
188 if (!dv_bfin_mmr_require_16 (me, addr, nr_bytes, true))
190 bfin_ebiu_amc_write_amgctl (me, amc, value);
192 case mmr_offset(bf54x.ambctl0):
193 amc->bf54x.ambctl0 = value;
195 case mmr_offset(bf54x.ambctl1):
196 amc->bf54x.ambctl1 = value;
198 case mmr_offset(bf54x.mbsctl):
199 /* XXX: implement this. */
201 case mmr_offset(bf54x.arbstat):
202 /* XXX: implement this. */
204 case mmr_offset(bf54x.mode):
205 /* XXX: implement this. */
207 case mmr_offset(bf54x.fctl):
208 /* XXX: implement this. */
211 dv_bfin_mmr_invalid (me, addr, nr_bytes, true);
219 bfin_ebiu_amc_io_write_buffer (struct hw *me, const void *source, int space,
220 address_word addr, unsigned nr_bytes)
222 struct bfin_ebiu_amc *amc = hw_data (me);
226 /* Invalid access mode is higher priority than missing register. */
227 if (!dv_bfin_mmr_require_16_32 (me, addr, nr_bytes, true))
230 value = dv_load_4 (source);
231 mmr_off = addr - amc->base;
235 return amc->io_write (me, source, space, addr, nr_bytes,
236 amc, mmr_off, value);
240 bf50x_ebiu_amc_io_read_buffer (struct hw *me, void *dest, int space,
241 address_word addr, unsigned nr_bytes,
242 struct bfin_ebiu_amc *amc, bu32 mmr_off,
243 void *valuep, bu16 *value16, bu32 *value32)
247 case mmr_offset(amgctl):
248 case mmr_offset(bf50x.fctl):
249 if (!dv_bfin_mmr_require_16 (me, addr, nr_bytes, false))
251 dv_store_2 (dest, *value16);
253 case mmr_offset(bf50x.ambctl0):
254 case mmr_offset(bf50x.ambctl1):
255 case mmr_offset(bf50x.mode):
256 dv_store_4 (dest, *value32);
259 dv_bfin_mmr_invalid (me, addr, nr_bytes, false);
267 bf53x_ebiu_amc_io_read_buffer (struct hw *me, void *dest, int space,
268 address_word addr, unsigned nr_bytes,
269 struct bfin_ebiu_amc *amc, bu32 mmr_off,
270 void *valuep, bu16 *value16, bu32 *value32)
274 case mmr_offset(amgctl):
275 if (!dv_bfin_mmr_require_16 (me, addr, nr_bytes, false))
277 dv_store_2 (dest, *value16);
279 case mmr_offset(bf53x.ambctl0):
280 case mmr_offset(bf53x.ambctl1):
281 dv_store_4 (dest, *value32);
284 dv_bfin_mmr_invalid (me, addr, nr_bytes, false);
292 bf54x_ebiu_amc_io_read_buffer (struct hw *me, void *dest, int space,
293 address_word addr, unsigned nr_bytes,
294 struct bfin_ebiu_amc *amc, bu32 mmr_off,
295 void *valuep, bu16 *value16, bu32 *value32)
299 case mmr_offset(amgctl):
300 if (!dv_bfin_mmr_require_16 (me, addr, nr_bytes, false))
302 dv_store_2 (dest, *value16);
304 case mmr_offset(bf54x.ambctl0):
305 case mmr_offset(bf54x.ambctl1):
306 case mmr_offset(bf54x.mbsctl):
307 case mmr_offset(bf54x.arbstat):
308 case mmr_offset(bf54x.mode):
309 case mmr_offset(bf54x.fctl):
310 dv_store_4 (dest, *value32);
313 dv_bfin_mmr_invalid (me, addr, nr_bytes, false);
321 bfin_ebiu_amc_io_read_buffer (struct hw *me, void *dest, int space,
322 address_word addr, unsigned nr_bytes)
324 struct bfin_ebiu_amc *amc = hw_data (me);
328 /* Invalid access mode is higher priority than missing register. */
329 if (!dv_bfin_mmr_require_16_32 (me, addr, nr_bytes, false))
332 mmr_off = addr - amc->base;
333 valuep = (void *)((unsigned long)amc + mmr_base() + mmr_off);
337 return amc->io_read (me, dest, space, addr, nr_bytes, amc,
338 mmr_off, valuep, valuep, valuep);
342 bfin_ebiu_amc_attach_address_callback (struct hw *me,
346 address_word nr_bytes,
349 struct bfin_ebiu_amc *amc = hw_data (me);
351 HW_TRACE ((me, "attach - level=%d, space=%d, addr=0x%lx, nr_bytes=%lu, client=%s",
352 level, space, (unsigned long) addr, (unsigned long) nr_bytes, hw_path (client)));
354 if (addr + nr_bytes > ARRAY_SIZE (amc->slaves))
355 hw_abort (me, "ebiu amc attaches are done in terms of banks");
358 amc->slaves[addr + nr_bytes] = client;
360 bfin_ebiu_amc_write_amgctl (me, amc, amc->amgctl);
364 attach_bfin_ebiu_amc_regs (struct hw *me, struct bfin_ebiu_amc *amc,
367 address_word attach_address;
369 unsigned attach_size;
370 reg_property_spec reg;
372 if (hw_find_property (me, "reg") == NULL)
373 hw_abort (me, "Missing \"reg\" property");
375 if (!hw_find_reg_array_property (me, "reg", 0, ®))
376 hw_abort (me, "\"reg\" property must contain three addr/size entries");
378 if (hw_find_property (me, "type") == NULL)
379 hw_abort (me, "Missing \"type\" property");
381 hw_unit_address_to_attach_address (hw_parent (me),
383 &attach_space, &attach_address, me);
384 hw_unit_size_to_attach_size (hw_parent (me), ®.size, &attach_size, me);
386 if (attach_size != reg_size)
387 hw_abort (me, "\"reg\" size must be %#x", reg_size);
389 hw_attach_address (hw_parent (me),
390 0, attach_space, attach_address, attach_size, me);
392 amc->base = attach_address;
396 bfin_ebiu_amc_finish (struct hw *me)
398 struct bfin_ebiu_amc *amc;
402 amc = HW_ZALLOC (me, struct bfin_ebiu_amc);
404 set_hw_data (me, amc);
405 set_hw_io_read_buffer (me, bfin_ebiu_amc_io_read_buffer);
406 set_hw_io_write_buffer (me, bfin_ebiu_amc_io_write_buffer);
407 set_hw_attach_address (me, bfin_ebiu_amc_attach_address_callback);
409 amc->type = hw_find_integer_property (me, "type");
414 amc->io_write = bf50x_ebiu_amc_io_write_buffer;
415 amc->io_read = bf50x_ebiu_amc_io_read_buffer;
416 mmr_names = bf50x_mmr_names;
417 reg_size = sizeof (amc->bf50x) + 4;
419 /* Initialize the AMC. */
420 amc->bank_base = BFIN_EBIU_AMC_BASE;
421 amc->bank_size = 1 * 1024 * 1024;
423 amc->bf50x.ambctl0 = 0x0000FFC2;
424 amc->bf50x.ambctl1 = 0x0000FFC2;
425 amc->bf50x.mode = 0x0001;
426 amc->bf50x.fctl = 0x0002;
429 amc->io_write = bf54x_ebiu_amc_io_write_buffer;
430 amc->io_read = bf54x_ebiu_amc_io_read_buffer;
431 mmr_names = bf54x_mmr_names;
432 reg_size = sizeof (amc->bf54x) + 4;
434 /* Initialize the AMC. */
435 amc->bank_base = BFIN_EBIU_AMC_BASE;
436 amc->bank_size = 64 * 1024 * 1024;
438 amc->bf54x.ambctl0 = 0xFFC2FFC2;
439 amc->bf54x.ambctl1 = 0xFFC2FFC2;
440 amc->bf54x.fctl = 0x0006;
450 amc->io_write = bf53x_ebiu_amc_io_write_buffer;
451 amc->io_read = bf53x_ebiu_amc_io_read_buffer;
452 mmr_names = bf53x_mmr_names;
453 reg_size = sizeof (amc->bf53x) + 4;
455 /* Initialize the AMC. */
456 amc->bank_base = BFIN_EBIU_AMC_BASE;
457 if (amc->type == 561)
458 amc->bank_size = 64 * 1024 * 1024;
460 amc->bank_size = 1 * 1024 * 1024;
462 amc->bf53x.ambctl0 = 0xFFC2FFC2;
463 amc->bf53x.ambctl1 = 0xFFC2FFC2;
465 case 590 ... 599: /* BF59x has no AMC. */
467 hw_abort (me, "no support for EBIU AMC on this Blackfin model yet");
470 attach_bfin_ebiu_amc_regs (me, amc, reg_size);
472 bfin_ebiu_amc_write_amgctl (me, amc, amgctl);
475 const struct hw_descriptor dv_bfin_ebiu_amc_descriptor[] =
477 {"bfin_ebiu_amc", bfin_ebiu_amc_finish,},