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qapi: Improve specificity of type/member descriptions
[qemu/armbru.git] / hw / ssi / aspeed_smc.c
blob72811693224d4270164754b3bd7a2c464cfb2a6c
1 /*
2 * ASPEED AST2400 SMC Controller (SPI Flash Only)
3 *
4 * Copyright (C) 2016 IBM Corp.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #include "qemu/osdep.h"
26 #include "hw/sysbus.h"
27 #include "migration/vmstate.h"
28 #include "qemu/log.h"
29 #include "qemu/module.h"
30 #include "qemu/error-report.h"
31 #include "qapi/error.h"
32 #include "qemu/units.h"
33 #include "trace.h"
34
35 #include "hw/irq.h"
36 #include "hw/qdev-properties.h"
37 #include "hw/ssi/aspeed_smc.h"
38
39 /* CE Type Setting Register */
40 #define R_CONF (0x00 / 4)
41 #define CONF_LEGACY_DISABLE (1 << 31)
42 #define CONF_ENABLE_W4 20
43 #define CONF_ENABLE_W3 19
44 #define CONF_ENABLE_W2 18
45 #define CONF_ENABLE_W1 17
46 #define CONF_ENABLE_W0 16
47 #define CONF_FLASH_TYPE4 8
48 #define CONF_FLASH_TYPE3 6
49 #define CONF_FLASH_TYPE2 4
50 #define CONF_FLASH_TYPE1 2
51 #define CONF_FLASH_TYPE0 0
52 #define CONF_FLASH_TYPE_NOR 0x0
53 #define CONF_FLASH_TYPE_NAND 0x1
54 #define CONF_FLASH_TYPE_SPI 0x2 /* AST2600 is SPI only */
55
56 /* CE Control Register */
57 #define R_CE_CTRL (0x04 / 4)
58 #define CTRL_EXTENDED4 4 /* 32 bit addressing for SPI */
59 #define CTRL_EXTENDED3 3 /* 32 bit addressing for SPI */
60 #define CTRL_EXTENDED2 2 /* 32 bit addressing for SPI */
61 #define CTRL_EXTENDED1 1 /* 32 bit addressing for SPI */
62 #define CTRL_EXTENDED0 0 /* 32 bit addressing for SPI */
63
64 /* Interrupt Control and Status Register */
65 #define R_INTR_CTRL (0x08 / 4)
66 #define INTR_CTRL_DMA_STATUS (1 << 11)
67 #define INTR_CTRL_CMD_ABORT_STATUS (1 << 10)
68 #define INTR_CTRL_WRITE_PROTECT_STATUS (1 << 9)
69 #define INTR_CTRL_DMA_EN (1 << 3)
70 #define INTR_CTRL_CMD_ABORT_EN (1 << 2)
71 #define INTR_CTRL_WRITE_PROTECT_EN (1 << 1)
72
73 /* Command Control Register */
74 #define R_CE_CMD_CTRL (0x0C / 4)
75 #define CTRL_ADDR_BYTE0_DISABLE_SHIFT 4
76 #define CTRL_DATA_BYTE0_DISABLE_SHIFT 0
77
78 #define aspeed_smc_addr_byte_enabled(s, i) \
79 (!((s)->regs[R_CE_CMD_CTRL] & (1 << (CTRL_ADDR_BYTE0_DISABLE_SHIFT + (i)))))
80 #define aspeed_smc_data_byte_enabled(s, i) \
81 (!((s)->regs[R_CE_CMD_CTRL] & (1 << (CTRL_DATA_BYTE0_DISABLE_SHIFT + (i)))))
82
83 /* CEx Control Register */
84 #define R_CTRL0 (0x10 / 4)
85 #define CTRL_IO_QPI (1 << 31)
86 #define CTRL_IO_QUAD_DATA (1 << 30)
87 #define CTRL_IO_DUAL_DATA (1 << 29)
88 #define CTRL_IO_DUAL_ADDR_DATA (1 << 28) /* Includes dummies */
89 #define CTRL_IO_QUAD_ADDR_DATA (1 << 28) /* Includes dummies */
90 #define CTRL_CMD_SHIFT 16
91 #define CTRL_CMD_MASK 0xff
92 #define CTRL_DUMMY_HIGH_SHIFT 14
93 #define CTRL_AST2400_SPI_4BYTE (1 << 13)
94 #define CE_CTRL_CLOCK_FREQ_SHIFT 8
95 #define CE_CTRL_CLOCK_FREQ_MASK 0xf
96 #define CE_CTRL_CLOCK_FREQ(div) \
97 (((div) & CE_CTRL_CLOCK_FREQ_MASK) << CE_CTRL_CLOCK_FREQ_SHIFT)
98 #define CTRL_DUMMY_LOW_SHIFT 6 /* 2 bits [7:6] */
99 #define CTRL_CE_STOP_ACTIVE (1 << 2)
100 #define CTRL_CMD_MODE_MASK 0x3
101 #define CTRL_READMODE 0x0
102 #define CTRL_FREADMODE 0x1
103 #define CTRL_WRITEMODE 0x2
104 #define CTRL_USERMODE 0x3
105 #define R_CTRL1 (0x14 / 4)
106 #define R_CTRL2 (0x18 / 4)
107 #define R_CTRL3 (0x1C / 4)
108 #define R_CTRL4 (0x20 / 4)
109
110 /* CEx Segment Address Register */
111 #define R_SEG_ADDR0 (0x30 / 4)
112 #define SEG_END_SHIFT 24 /* 8MB units */
113 #define SEG_END_MASK 0xff
114 #define SEG_START_SHIFT 16 /* address bit [A29-A23] */
115 #define SEG_START_MASK 0xff
116 #define R_SEG_ADDR1 (0x34 / 4)
117 #define R_SEG_ADDR2 (0x38 / 4)
118 #define R_SEG_ADDR3 (0x3C / 4)
119 #define R_SEG_ADDR4 (0x40 / 4)
120
121 /* Misc Control Register #1 */
122 #define R_MISC_CTRL1 (0x50 / 4)
123
124 /* SPI dummy cycle data */
125 #define R_DUMMY_DATA (0x54 / 4)
126
127 /* FMC_WDT2 Control/Status Register for Alternate Boot (AST2600) */
128 #define R_FMC_WDT2_CTRL (0x64 / 4)
129 #define FMC_WDT2_CTRL_ALT_BOOT_MODE BIT(6) /* O: 2 chips 1: 1 chip */
130 #define FMC_WDT2_CTRL_SINGLE_BOOT_MODE BIT(5)
131 #define FMC_WDT2_CTRL_BOOT_SOURCE BIT(4) /* O: primary 1: alternate */
132 #define FMC_WDT2_CTRL_EN BIT(0)
133
134 /* DMA Control/Status Register */
135 #define R_DMA_CTRL (0x80 / 4)
136 #define DMA_CTRL_REQUEST (1 << 31)
137 #define DMA_CTRL_GRANT (1 << 30)
138 #define DMA_CTRL_DELAY_MASK 0xf
139 #define DMA_CTRL_DELAY_SHIFT 8
140 #define DMA_CTRL_FREQ_MASK 0xf
141 #define DMA_CTRL_FREQ_SHIFT 4
142 #define DMA_CTRL_CALIB (1 << 3)
143 #define DMA_CTRL_CKSUM (1 << 2)
144 #define DMA_CTRL_WRITE (1 << 1)
145 #define DMA_CTRL_ENABLE (1 << 0)
146
147 /* DMA Flash Side Address */
148 #define R_DMA_FLASH_ADDR (0x84 / 4)
149
150 /* DMA DRAM Side Address */
151 #define R_DMA_DRAM_ADDR (0x88 / 4)
152
153 /* DMA Length Register */
154 #define R_DMA_LEN (0x8C / 4)
155
156 /* Checksum Calculation Result */
157 #define R_DMA_CHECKSUM (0x90 / 4)
158
159 /* Read Timing Compensation Register */
160 #define R_TIMINGS (0x94 / 4)
161
162 /* SPI controller registers and bits (AST2400) */
163 #define R_SPI_CONF (0x00 / 4)
164 #define SPI_CONF_ENABLE_W0 0
165 #define R_SPI_CTRL0 (0x4 / 4)
166 #define R_SPI_MISC_CTRL (0x10 / 4)
167 #define R_SPI_TIMINGS (0x14 / 4)
168
169 #define ASPEED_SMC_R_SPI_MAX (0x20 / 4)
170 #define ASPEED_SMC_R_SMC_MAX (0x20 / 4)
171
172 /*
173 * DMA DRAM addresses should be 4 bytes aligned and the valid address
174 * range is 0x40000000 - 0x5FFFFFFF (AST2400)
175 * 0x80000000 - 0xBFFFFFFF (AST2500)
176 *
177 * DMA flash addresses should be 4 bytes aligned and the valid address
178 * range is 0x20000000 - 0x2FFFFFFF.
179 *
180 * DMA length is from 4 bytes to 32MB
181 * 0: 4 bytes
182 * 0x7FFFFF: 32M bytes
183 */
184 #define DMA_DRAM_ADDR(asc, val) ((val) & (asc)->dma_dram_mask)
185 #define DMA_FLASH_ADDR(asc, val) ((val) & (asc)->dma_flash_mask)
186 #define DMA_LENGTH(val) ((val) & 0x01FFFFFC)
187
188 /* Flash opcodes. */
189 #define SPI_OP_READ 0x03 /* Read data bytes (low frequency) */
190
191 #define SNOOP_OFF 0xFF
192 #define SNOOP_START 0x0
193
194 /*
195 * Default segments mapping addresses and size for each peripheral per
196 * controller. These can be changed when board is initialized with the
197 * Segment Address Registers.
198 */
199 static const AspeedSegments aspeed_2500_spi1_segments[];
200 static const AspeedSegments aspeed_2500_spi2_segments[];
201
202 #define ASPEED_SMC_FEATURE_DMA 0x1
203 #define ASPEED_SMC_FEATURE_DMA_GRANT 0x2
204 #define ASPEED_SMC_FEATURE_WDT_CONTROL 0x4
205
206 static inline bool aspeed_smc_has_dma(const AspeedSMCClass *asc)
207 {
208 return !!(asc->features & ASPEED_SMC_FEATURE_DMA);
209 }
210
211 static inline bool aspeed_smc_has_wdt_control(const AspeedSMCClass *asc)
212 {
213 return !!(asc->features & ASPEED_SMC_FEATURE_WDT_CONTROL);
214 }
215
216 #define aspeed_smc_error(fmt, ...) \
217 qemu_log_mask(LOG_GUEST_ERROR, "%s: " fmt "\n", __func__, ## __VA_ARGS__)
218
219 static bool aspeed_smc_flash_overlap(const AspeedSMCState *s,
220 const AspeedSegments *new,
221 int cs)
222 {
223 AspeedSMCClass *asc = ASPEED_SMC_GET_CLASS(s);
224 AspeedSegments seg;
225 int i;
226
227 for (i = 0; i < asc->cs_num_max; i++) {
228 if (i == cs) {
229 continue;
230 }
231
232 asc->reg_to_segment(s, s->regs[R_SEG_ADDR0 + i], &seg);
233
234 if (new->addr + new->size > seg.addr &&
235 new->addr < seg.addr + seg.size) {
236 aspeed_smc_error("new segment CS%d [ 0x%"
237 HWADDR_PRIx" - 0x%"HWADDR_PRIx" ] overlaps with "
238 "CS%d [ 0x%"HWADDR_PRIx" - 0x%"HWADDR_PRIx" ]",
239 cs, new->addr, new->addr + new->size,
240 i, seg.addr, seg.addr + seg.size);
241 return true;
242 }
243 }
244 return false;
245 }
246
247 static void aspeed_smc_flash_set_segment_region(AspeedSMCState *s, int cs,
248 uint64_t regval)
249 {
250 AspeedSMCClass *asc = ASPEED_SMC_GET_CLASS(s);
251 AspeedSMCFlash *fl = &s->flashes[cs];
252 AspeedSegments seg;
253
254 asc->reg_to_segment(s, regval, &seg);
255
256 memory_region_transaction_begin();
257 memory_region_set_size(&fl->mmio, seg.size);
258 memory_region_set_address(&fl->mmio, seg.addr - asc->flash_window_base);
259 memory_region_set_enabled(&fl->mmio, !!seg.size);
260 memory_region_transaction_commit();
261
262 if (asc->segment_addr_mask) {
263 regval &= asc->segment_addr_mask;
264 }
265
266 s->regs[R_SEG_ADDR0 + cs] = regval;
267 }
268
269 static void aspeed_smc_flash_set_segment(AspeedSMCState *s, int cs,
270 uint64_t new)
271 {
272 AspeedSMCClass *asc = ASPEED_SMC_GET_CLASS(s);
273 AspeedSegments seg;
274
275 asc->reg_to_segment(s, new, &seg);
276
277 trace_aspeed_smc_flash_set_segment(cs, new, seg.addr, seg.addr + seg.size);
278
279 /* The start address of CS0 is read-only */
280 if (cs == 0 && seg.addr != asc->flash_window_base) {
281 aspeed_smc_error("Tried to change CS0 start address to 0x%"
282 HWADDR_PRIx, seg.addr);
283 seg.addr = asc->flash_window_base;
284 new = asc->segment_to_reg(s, &seg);
285 }
286
287 /*
288 * The end address of the AST2500 spi controllers is also
289 * read-only.
290 */
291 if ((asc->segments == aspeed_2500_spi1_segments ||
292 asc->segments == aspeed_2500_spi2_segments) &&
293 cs == asc->cs_num_max &&
294 seg.addr + seg.size != asc->segments[cs].addr +
295 asc->segments[cs].size) {
296 aspeed_smc_error("Tried to change CS%d end address to 0x%"
297 HWADDR_PRIx, cs, seg.addr + seg.size);
298 seg.size = asc->segments[cs].addr + asc->segments[cs].size -
299 seg.addr;
300 new = asc->segment_to_reg(s, &seg);
301 }
302
303 /* Keep the segment in the overall flash window */
304 if (seg.size &&
305 (seg.addr + seg.size <= asc->flash_window_base ||
306 seg.addr > asc->flash_window_base + asc->flash_window_size)) {
307 aspeed_smc_error("new segment for CS%d is invalid : "
308 "[ 0x%"HWADDR_PRIx" - 0x%"HWADDR_PRIx" ]",
309 cs, seg.addr, seg.addr + seg.size);
310 return;
311 }
312
313 /* Check start address vs. alignment */
314 if (seg.size && !QEMU_IS_ALIGNED(seg.addr, seg.size)) {
315 aspeed_smc_error("new segment for CS%d is not "
316 "aligned : [ 0x%"HWADDR_PRIx" - 0x%"HWADDR_PRIx" ]",
317 cs, seg.addr, seg.addr + seg.size);
318 }
319
320 /* And segments should not overlap (in the specs) */
321 aspeed_smc_flash_overlap(s, &seg, cs);
322
323 /* All should be fine now to move the region */
324 aspeed_smc_flash_set_segment_region(s, cs, new);
325 }
326
327 static uint64_t aspeed_smc_flash_default_read(void *opaque, hwaddr addr,
328 unsigned size)
329 {
330 aspeed_smc_error("To 0x%" HWADDR_PRIx " of size %u", addr, size);
331 return 0;
332 }
333
334 static void aspeed_smc_flash_default_write(void *opaque, hwaddr addr,
335 uint64_t data, unsigned size)
336 {
337 aspeed_smc_error("To 0x%" HWADDR_PRIx " of size %u: 0x%" PRIx64,
338 addr, size, data);
339 }
340
341 static const MemoryRegionOps aspeed_smc_flash_default_ops = {
342 .read = aspeed_smc_flash_default_read,
343 .write = aspeed_smc_flash_default_write,
344 .endianness = DEVICE_LITTLE_ENDIAN,
345 .valid = {
346 .min_access_size = 1,
347 .max_access_size = 4,
348 },
349 };
350
351 static inline int aspeed_smc_flash_mode(const AspeedSMCFlash *fl)
352 {
353 const AspeedSMCState *s = fl->controller;
354
355 return s->regs[s->r_ctrl0 + fl->cs] & CTRL_CMD_MODE_MASK;
356 }
357
358 static inline bool aspeed_smc_is_writable(const AspeedSMCFlash *fl)
359 {
360 const AspeedSMCState *s = fl->controller;
361
362 return s->regs[s->r_conf] & (1 << (s->conf_enable_w0 + fl->cs));
363 }
364
365 static inline int aspeed_smc_flash_cmd(const AspeedSMCFlash *fl)
366 {
367 const AspeedSMCState *s = fl->controller;
368 int cmd = (s->regs[s->r_ctrl0 + fl->cs] >> CTRL_CMD_SHIFT) & CTRL_CMD_MASK;
369
370 /*
371 * In read mode, the default SPI command is READ (0x3). In other
372 * modes, the command should necessarily be defined
373 *
374 * TODO: add support for READ4 (0x13) on AST2600
375 */
376 if (aspeed_smc_flash_mode(fl) == CTRL_READMODE) {
377 cmd = SPI_OP_READ;
378 }
379
380 if (!cmd) {
381 aspeed_smc_error("no command defined for mode %d",
382 aspeed_smc_flash_mode(fl));
383 }
384
385 return cmd;
386 }
387
388 static inline int aspeed_smc_flash_addr_width(const AspeedSMCFlash *fl)
389 {
390 const AspeedSMCState *s = fl->controller;
391 AspeedSMCClass *asc = fl->asc;
392
393 if (asc->addr_width) {
394 return asc->addr_width(s);
395 } else {
396 return s->regs[s->r_ce_ctrl] & (1 << (CTRL_EXTENDED0 + fl->cs)) ? 4 : 3;
397 }
398 }
399
400 static void aspeed_smc_flash_do_select(AspeedSMCFlash *fl, bool unselect)
401 {
402 AspeedSMCState *s = fl->controller;
403
404 trace_aspeed_smc_flash_select(fl->cs, unselect ? "un" : "");
405
406 qemu_set_irq(s->cs_lines[fl->cs], unselect);
407 }
408
409 static void aspeed_smc_flash_select(AspeedSMCFlash *fl)
410 {
411 aspeed_smc_flash_do_select(fl, false);
412 }
413
414 static void aspeed_smc_flash_unselect(AspeedSMCFlash *fl)
415 {
416 aspeed_smc_flash_do_select(fl, true);
417 }
418
419 static uint32_t aspeed_smc_check_segment_addr(const AspeedSMCFlash *fl,
420 uint32_t addr)
421 {
422 const AspeedSMCState *s = fl->controller;
423 AspeedSMCClass *asc = fl->asc;
424 AspeedSegments seg;
425
426 asc->reg_to_segment(s, s->regs[R_SEG_ADDR0 + fl->cs], &seg);
427 if ((addr % seg.size) != addr) {
428 aspeed_smc_error("invalid address 0x%08x for CS%d segment : "
429 "[ 0x%"HWADDR_PRIx" - 0x%"HWADDR_PRIx" ]",
430 addr, fl->cs, seg.addr, seg.addr + seg.size);
431 addr %= seg.size;
432 }
433
434 return addr;
435 }
436
437 static int aspeed_smc_flash_dummies(const AspeedSMCFlash *fl)
438 {
439 const AspeedSMCState *s = fl->controller;
440 uint32_t r_ctrl0 = s->regs[s->r_ctrl0 + fl->cs];
441 uint32_t dummy_high = (r_ctrl0 >> CTRL_DUMMY_HIGH_SHIFT) & 0x1;
442 uint32_t dummy_low = (r_ctrl0 >> CTRL_DUMMY_LOW_SHIFT) & 0x3;
443 uint32_t dummies = ((dummy_high << 2) | dummy_low) * 8;
444
445 if (r_ctrl0 & CTRL_IO_DUAL_ADDR_DATA) {
446 dummies /= 2;
447 }
448
449 return dummies;
450 }
451
452 static void aspeed_smc_flash_setup(AspeedSMCFlash *fl, uint32_t addr)
453 {
454 const AspeedSMCState *s = fl->controller;
455 uint8_t cmd = aspeed_smc_flash_cmd(fl);
456 int i = aspeed_smc_flash_addr_width(fl);
457
458 /* Flash access can not exceed CS segment */
459 addr = aspeed_smc_check_segment_addr(fl, addr);
460
461 ssi_transfer(s->spi, cmd);
462 while (i--) {
463 if (aspeed_smc_addr_byte_enabled(s, i)) {
464 ssi_transfer(s->spi, (addr >> (i * 8)) & 0xff);
465 }
466 }
467
468 /*
469 * Use fake transfers to model dummy bytes. The value should
470 * be configured to some non-zero value in fast read mode and
471 * zero in read mode. But, as the HW allows inconsistent
472 * settings, let's check for fast read mode.
473 */
474 if (aspeed_smc_flash_mode(fl) == CTRL_FREADMODE) {
475 for (i = 0; i < aspeed_smc_flash_dummies(fl); i++) {
476 ssi_transfer(fl->controller->spi, s->regs[R_DUMMY_DATA] & 0xff);
477 }
478 }
479 }
480
481 static uint64_t aspeed_smc_flash_read(void *opaque, hwaddr addr, unsigned size)
482 {
483 AspeedSMCFlash *fl = opaque;
484 AspeedSMCState *s = fl->controller;
485 uint64_t ret = 0;
486 int i;
487
488 switch (aspeed_smc_flash_mode(fl)) {
489 case CTRL_USERMODE:
490 for (i = 0; i < size; i++) {
491 ret |= (uint64_t) ssi_transfer(s->spi, 0x0) << (8 * i);
492 }
493 break;
494 case CTRL_READMODE:
495 case CTRL_FREADMODE:
496 aspeed_smc_flash_select(fl);
497 aspeed_smc_flash_setup(fl, addr);
498
499 for (i = 0; i < size; i++) {
500 ret |= (uint64_t) ssi_transfer(s->spi, 0x0) << (8 * i);
501 }
502
503 aspeed_smc_flash_unselect(fl);
504 break;
505 default:
506 aspeed_smc_error("invalid flash mode %d", aspeed_smc_flash_mode(fl));
507 }
508
509 trace_aspeed_smc_flash_read(fl->cs, addr, size, ret,
510 aspeed_smc_flash_mode(fl));
511 return ret;
512 }
513
514 /*
515 * TODO (clg@kaod.org): stolen from xilinx_spips.c. Should move to a
516 * common include header.
517 */
518 typedef enum {
519 READ = 0x3, READ_4 = 0x13,
520 FAST_READ = 0xb, FAST_READ_4 = 0x0c,
521 DOR = 0x3b, DOR_4 = 0x3c,
522 QOR = 0x6b, QOR_4 = 0x6c,
523 DIOR = 0xbb, DIOR_4 = 0xbc,
524 QIOR = 0xeb, QIOR_4 = 0xec,
525
526 PP = 0x2, PP_4 = 0x12,
527 DPP = 0xa2,
528 QPP = 0x32, QPP_4 = 0x34,
529 } FlashCMD;
530
531 static int aspeed_smc_num_dummies(uint8_t command)
532 {
533 switch (command) { /* check for dummies */
534 case READ: /* no dummy bytes/cycles */
535 case PP:
536 case DPP:
537 case QPP:
538 case READ_4:
539 case PP_4:
540 case QPP_4:
541 return 0;
542 case FAST_READ:
543 case DOR:
544 case QOR:
545 case FAST_READ_4:
546 case DOR_4:
547 case QOR_4:
548 return 1;
549 case DIOR:
550 case DIOR_4:
551 return 2;
552 case QIOR:
553 case QIOR_4:
554 return 4;
555 default:
556 return -1;
557 }
558 }
559
560 static bool aspeed_smc_do_snoop(AspeedSMCFlash *fl, uint64_t data,
561 unsigned size)
562 {
563 AspeedSMCState *s = fl->controller;
564 uint8_t addr_width = aspeed_smc_flash_addr_width(fl);
565
566 trace_aspeed_smc_do_snoop(fl->cs, s->snoop_index, s->snoop_dummies,
567 (uint8_t) data & 0xff);
568
569 if (s->snoop_index == SNOOP_OFF) {
570 return false; /* Do nothing */
571
572 } else if (s->snoop_index == SNOOP_START) {
573 uint8_t cmd = data & 0xff;
574 int ndummies = aspeed_smc_num_dummies(cmd);
575
576 /*
577 * No dummy cycles are expected with the current command. Turn
578 * off snooping and let the transfer proceed normally.
579 */
580 if (ndummies <= 0) {
581 s->snoop_index = SNOOP_OFF;
582 return false;
583 }
584
585 s->snoop_dummies = ndummies * 8;
586
587 } else if (s->snoop_index >= addr_width + 1) {
588
589 /* The SPI transfer has reached the dummy cycles sequence */
590 for (; s->snoop_dummies; s->snoop_dummies--) {
591 ssi_transfer(s->spi, s->regs[R_DUMMY_DATA] & 0xff);
592 }
593
594 /* If no more dummy cycles are expected, turn off snooping */
595 if (!s->snoop_dummies) {
596 s->snoop_index = SNOOP_OFF;
597 } else {
598 s->snoop_index += size;
599 }
600
601 /*
602 * Dummy cycles have been faked already. Ignore the current
603 * SPI transfer
604 */
605 return true;
606 }
607
608 s->snoop_index += size;
609 return false;
610 }
611
612 static void aspeed_smc_flash_write(void *opaque, hwaddr addr, uint64_t data,
613 unsigned size)
614 {
615 AspeedSMCFlash *fl = opaque;
616 AspeedSMCState *s = fl->controller;
617 int i;
618
619 trace_aspeed_smc_flash_write(fl->cs, addr, size, data,
620 aspeed_smc_flash_mode(fl));
621
622 if (!aspeed_smc_is_writable(fl)) {
623 aspeed_smc_error("flash is not writable at 0x%" HWADDR_PRIx, addr);
624 return;
625 }
626
627 switch (aspeed_smc_flash_mode(fl)) {
628 case CTRL_USERMODE:
629 if (aspeed_smc_do_snoop(fl, data, size)) {
630 break;
631 }
632
633 for (i = 0; i < size; i++) {
634 ssi_transfer(s->spi, (data >> (8 * i)) & 0xff);
635 }
636 break;
637 case CTRL_WRITEMODE:
638 aspeed_smc_flash_select(fl);
639 aspeed_smc_flash_setup(fl, addr);
640
641 for (i = 0; i < size; i++) {
642 ssi_transfer(s->spi, (data >> (8 * i)) & 0xff);
643 }
644
645 aspeed_smc_flash_unselect(fl);
646 break;
647 default:
648 aspeed_smc_error("invalid flash mode %d", aspeed_smc_flash_mode(fl));
649 }
650 }
651
652 static const MemoryRegionOps aspeed_smc_flash_ops = {
653 .read = aspeed_smc_flash_read,
654 .write = aspeed_smc_flash_write,
655 .endianness = DEVICE_LITTLE_ENDIAN,
656 .valid = {
657 .min_access_size = 1,
658 .max_access_size = 4,
659 },
660 };
661
662 static void aspeed_smc_flash_update_ctrl(AspeedSMCFlash *fl, uint32_t value)
663 {
664 AspeedSMCState *s = fl->controller;
665 bool unselect;
666
667 /* User mode selects the CS, other modes unselect */
668 unselect = (value & CTRL_CMD_MODE_MASK) != CTRL_USERMODE;
669
670 /* A change of CTRL_CE_STOP_ACTIVE from 0 to 1, unselects the CS */
671 if (!(s->regs[s->r_ctrl0 + fl->cs] & CTRL_CE_STOP_ACTIVE) &&
672 value & CTRL_CE_STOP_ACTIVE) {
673 unselect = true;
674 }
675
676 s->regs[s->r_ctrl0 + fl->cs] = value;
677
678 s->snoop_index = unselect ? SNOOP_OFF : SNOOP_START;
679
680 aspeed_smc_flash_do_select(fl, unselect);
681 }
682
683 static void aspeed_smc_reset(DeviceState *d)
684 {
685 AspeedSMCState *s = ASPEED_SMC(d);
686 AspeedSMCClass *asc = ASPEED_SMC_GET_CLASS(s);
687 int i;
688
689 if (asc->resets) {
690 memcpy(s->regs, asc->resets, sizeof s->regs);
691 } else {
692 memset(s->regs, 0, sizeof s->regs);
693 }
694
695 /* Unselect all peripherals */
696 for (i = 0; i < asc->cs_num_max; ++i) {
697 s->regs[s->r_ctrl0 + i] |= CTRL_CE_STOP_ACTIVE;
698 qemu_set_irq(s->cs_lines[i], true);
699 }
700
701 /* setup the default segment register values and regions for all */
702 for (i = 0; i < asc->cs_num_max; ++i) {
703 aspeed_smc_flash_set_segment_region(s, i,
704 asc->segment_to_reg(s, &asc->segments[i]));
705 }
706
707 s->snoop_index = SNOOP_OFF;
708 s->snoop_dummies = 0;
709 }
710
711 static uint64_t aspeed_smc_read(void *opaque, hwaddr addr, unsigned int size)
712 {
713 AspeedSMCState *s = ASPEED_SMC(opaque);
714 AspeedSMCClass *asc = ASPEED_SMC_GET_CLASS(opaque);
715
716 addr >>= 2;
717
718 if (addr == s->r_conf ||
719 (addr >= s->r_timings &&
720 addr < s->r_timings + asc->nregs_timings) ||
721 addr == s->r_ce_ctrl ||
722 addr == R_CE_CMD_CTRL ||
723 addr == R_INTR_CTRL ||
724 addr == R_DUMMY_DATA ||
725 (aspeed_smc_has_wdt_control(asc) && addr == R_FMC_WDT2_CTRL) ||
726 (aspeed_smc_has_dma(asc) && addr == R_DMA_CTRL) ||
727 (aspeed_smc_has_dma(asc) && addr == R_DMA_FLASH_ADDR) ||
728 (aspeed_smc_has_dma(asc) && addr == R_DMA_DRAM_ADDR) ||
729 (aspeed_smc_has_dma(asc) && addr == R_DMA_LEN) ||
730 (aspeed_smc_has_dma(asc) && addr == R_DMA_CHECKSUM) ||
731 (addr >= R_SEG_ADDR0 &&
732 addr < R_SEG_ADDR0 + asc->cs_num_max) ||
733 (addr >= s->r_ctrl0 && addr < s->r_ctrl0 + asc->cs_num_max)) {
734
735 trace_aspeed_smc_read(addr << 2, size, s->regs[addr]);
736
737 return s->regs[addr];
738 } else {
739 qemu_log_mask(LOG_UNIMP, "%s: not implemented: 0x%" HWADDR_PRIx "\n",
740 __func__, addr);
741 return -1;
742 }
743 }
744
745 static uint8_t aspeed_smc_hclk_divisor(uint8_t hclk_mask)
746 {
747 /* HCLK/1 .. HCLK/16 */
748 const uint8_t hclk_divisors[] = {
749 15, 7, 14, 6, 13, 5, 12, 4, 11, 3, 10, 2, 9, 1, 8, 0
750 };
751 int i;
752
753 for (i = 0; i < ARRAY_SIZE(hclk_divisors); i++) {
754 if (hclk_mask == hclk_divisors[i]) {
755 return i + 1;
756 }
757 }
758
759 aspeed_smc_error("invalid HCLK mask %x", hclk_mask);
760 return 0;
761 }
762
763 /*
764 * When doing calibration, the SPI clock rate in the CE0 Control
765 * Register and the read delay cycles in the Read Timing Compensation
766 * Register are set using bit[11:4] of the DMA Control Register.
767 */
768 static void aspeed_smc_dma_calibration(AspeedSMCState *s)
769 {
770 uint8_t delay =
771 (s->regs[R_DMA_CTRL] >> DMA_CTRL_DELAY_SHIFT) & DMA_CTRL_DELAY_MASK;
772 uint8_t hclk_mask =
773 (s->regs[R_DMA_CTRL] >> DMA_CTRL_FREQ_SHIFT) & DMA_CTRL_FREQ_MASK;
774 uint8_t hclk_div = aspeed_smc_hclk_divisor(hclk_mask);
775 uint32_t hclk_shift = (hclk_div - 1) << 2;
776 uint8_t cs;
777
778 /*
779 * The Read Timing Compensation Register values apply to all CS on
780 * the SPI bus and only HCLK/1 - HCLK/5 can have tunable delays
781 */
782 if (hclk_div && hclk_div < 6) {
783 s->regs[s->r_timings] &= ~(0xf << hclk_shift);
784 s->regs[s->r_timings] |= delay << hclk_shift;
785 }
786
787 /*
788 * TODO: compute the CS from the DMA address and the segment
789 * registers. This is not really a problem for now because the
790 * Timing Register values apply to all CS and software uses CS0 to
791 * do calibration.
792 */
793 cs = 0;
794 s->regs[s->r_ctrl0 + cs] &=
795 ~(CE_CTRL_CLOCK_FREQ_MASK << CE_CTRL_CLOCK_FREQ_SHIFT);
796 s->regs[s->r_ctrl0 + cs] |= CE_CTRL_CLOCK_FREQ(hclk_div);
797 }
798
799 /*
800 * Emulate read errors in the DMA Checksum Register for high
801 * frequencies and optimistic settings of the Read Timing Compensation
802 * Register. This will help in tuning the SPI timing calibration
803 * algorithm.
804 */
805 static bool aspeed_smc_inject_read_failure(AspeedSMCState *s)
806 {
807 uint8_t delay =
808 (s->regs[R_DMA_CTRL] >> DMA_CTRL_DELAY_SHIFT) & DMA_CTRL_DELAY_MASK;
809 uint8_t hclk_mask =
810 (s->regs[R_DMA_CTRL] >> DMA_CTRL_FREQ_SHIFT) & DMA_CTRL_FREQ_MASK;
811
812 /*
813 * Typical values of a palmetto-bmc machine.
814 */
815 switch (aspeed_smc_hclk_divisor(hclk_mask)) {
816 case 4 ... 16:
817 return false;
818 case 3: /* at least one HCLK cycle delay */
819 return (delay & 0x7) < 1;
820 case 2: /* at least two HCLK cycle delay */
821 return (delay & 0x7) < 2;
822 case 1: /* (> 100MHz) is above the max freq of the controller */
823 return true;
824 default:
825 g_assert_not_reached();
826 }
827 }
828
829 /*
830 * Accumulate the result of the reads to provide a checksum that will
831 * be used to validate the read timing settings.
832 */
833 static void aspeed_smc_dma_checksum(AspeedSMCState *s)
834 {
835 MemTxResult result;
836 uint32_t data;
837
838 if (s->regs[R_DMA_CTRL] & DMA_CTRL_WRITE) {
839 aspeed_smc_error("invalid direction for DMA checksum");
840 return;
841 }
842
843 if (s->regs[R_DMA_CTRL] & DMA_CTRL_CALIB) {
844 aspeed_smc_dma_calibration(s);
845 }
846
847 while (s->regs[R_DMA_LEN]) {
848 data = address_space_ldl_le(&s->flash_as, s->regs[R_DMA_FLASH_ADDR],
849 MEMTXATTRS_UNSPECIFIED, &result);
850 if (result != MEMTX_OK) {
851 aspeed_smc_error("Flash read failed @%08x",
852 s->regs[R_DMA_FLASH_ADDR]);
853 return;
854 }
855 trace_aspeed_smc_dma_checksum(s->regs[R_DMA_FLASH_ADDR], data);
856
857 /*
858 * When the DMA is on-going, the DMA registers are updated
859 * with the current working addresses and length.
860 */
861 s->regs[R_DMA_CHECKSUM] += data;
862 s->regs[R_DMA_FLASH_ADDR] += 4;
863 s->regs[R_DMA_LEN] -= 4;
864 }
865
866 if (s->inject_failure && aspeed_smc_inject_read_failure(s)) {
867 s->regs[R_DMA_CHECKSUM] = 0xbadc0de;
868 }
869
870 }
871
872 static void aspeed_smc_dma_rw(AspeedSMCState *s)
873 {
874 MemTxResult result;
875 uint32_t data;
876
877 trace_aspeed_smc_dma_rw(s->regs[R_DMA_CTRL] & DMA_CTRL_WRITE ?
878 "write" : "read",
879 s->regs[R_DMA_FLASH_ADDR],
880 s->regs[R_DMA_DRAM_ADDR],
881 s->regs[R_DMA_LEN]);
882 while (s->regs[R_DMA_LEN]) {
883 if (s->regs[R_DMA_CTRL] & DMA_CTRL_WRITE) {
884 data = address_space_ldl_le(&s->dram_as, s->regs[R_DMA_DRAM_ADDR],
885 MEMTXATTRS_UNSPECIFIED, &result);
886 if (result != MEMTX_OK) {
887 aspeed_smc_error("DRAM read failed @%08x",
888 s->regs[R_DMA_DRAM_ADDR]);
889 return;
890 }
891
892 address_space_stl_le(&s->flash_as, s->regs[R_DMA_FLASH_ADDR],
893 data, MEMTXATTRS_UNSPECIFIED, &result);
894 if (result != MEMTX_OK) {
895 aspeed_smc_error("Flash write failed @%08x",
896 s->regs[R_DMA_FLASH_ADDR]);
897 return;
898 }
899 } else {
900 data = address_space_ldl_le(&s->flash_as, s->regs[R_DMA_FLASH_ADDR],
901 MEMTXATTRS_UNSPECIFIED, &result);
902 if (result != MEMTX_OK) {
903 aspeed_smc_error("Flash read failed @%08x",
904 s->regs[R_DMA_FLASH_ADDR]);
905 return;
906 }
907
908 address_space_stl_le(&s->dram_as, s->regs[R_DMA_DRAM_ADDR],
909 data, MEMTXATTRS_UNSPECIFIED, &result);
910 if (result != MEMTX_OK) {
911 aspeed_smc_error("DRAM write failed @%08x",
912 s->regs[R_DMA_DRAM_ADDR]);
913 return;
914 }
915 }
916
917 /*
918 * When the DMA is on-going, the DMA registers are updated
919 * with the current working addresses and length.
920 */
921 s->regs[R_DMA_FLASH_ADDR] += 4;
922 s->regs[R_DMA_DRAM_ADDR] += 4;
923 s->regs[R_DMA_LEN] -= 4;
924 s->regs[R_DMA_CHECKSUM] += data;
925 }
926 }
927
928 static void aspeed_smc_dma_stop(AspeedSMCState *s)
929 {
930 /*
931 * When the DMA is disabled, INTR_CTRL_DMA_STATUS=0 means the
932 * engine is idle
933 */
934 s->regs[R_INTR_CTRL] &= ~INTR_CTRL_DMA_STATUS;
935 s->regs[R_DMA_CHECKSUM] = 0;
936
937 /*
938 * Lower the DMA irq in any case. The IRQ control register could
939 * have been cleared before disabling the DMA.
940 */
941 qemu_irq_lower(s->irq);
942 }
943
944 /*
945 * When INTR_CTRL_DMA_STATUS=1, the DMA has completed and a new DMA
946 * can start even if the result of the previous was not collected.
947 */
948 static bool aspeed_smc_dma_in_progress(AspeedSMCState *s)
949 {
950 return s->regs[R_DMA_CTRL] & DMA_CTRL_ENABLE &&
951 !(s->regs[R_INTR_CTRL] & INTR_CTRL_DMA_STATUS);
952 }
953
954 static void aspeed_smc_dma_done(AspeedSMCState *s)
955 {
956 s->regs[R_INTR_CTRL] |= INTR_CTRL_DMA_STATUS;
957 if (s->regs[R_INTR_CTRL] & INTR_CTRL_DMA_EN) {
958 qemu_irq_raise(s->irq);
959 }
960 }
961
962 static void aspeed_smc_dma_ctrl(AspeedSMCState *s, uint32_t dma_ctrl)
963 {
964 if (!(dma_ctrl & DMA_CTRL_ENABLE)) {
965 s->regs[R_DMA_CTRL] = dma_ctrl;
966
967 aspeed_smc_dma_stop(s);
968 return;
969 }
970
971 if (aspeed_smc_dma_in_progress(s)) {
972 aspeed_smc_error("DMA in progress !");
973 return;
974 }
975
976 s->regs[R_DMA_CTRL] = dma_ctrl;
977
978 if (s->regs[R_DMA_CTRL] & DMA_CTRL_CKSUM) {
979 aspeed_smc_dma_checksum(s);
980 } else {
981 aspeed_smc_dma_rw(s);
982 }
983
984 aspeed_smc_dma_done(s);
985 }
986
987 static inline bool aspeed_smc_dma_granted(AspeedSMCState *s)
988 {
989 AspeedSMCClass *asc = ASPEED_SMC_GET_CLASS(s);
990
991 if (!(asc->features & ASPEED_SMC_FEATURE_DMA_GRANT)) {
992 return true;
993 }
994
995 if (!(s->regs[R_DMA_CTRL] & DMA_CTRL_GRANT)) {
996 aspeed_smc_error("DMA not granted");
997 return false;
998 }
999
1000 return true;
1001 }
1002
1003 static void aspeed_2600_smc_dma_ctrl(AspeedSMCState *s, uint32_t dma_ctrl)
1004 {
1005 /* Preserve DMA bits */
1006 dma_ctrl |= s->regs[R_DMA_CTRL] & (DMA_CTRL_REQUEST | DMA_CTRL_GRANT);
1007
1008 if (dma_ctrl == 0xAEED0000) {
1009 /* automatically grant request */
1010 s->regs[R_DMA_CTRL] |= (DMA_CTRL_REQUEST | DMA_CTRL_GRANT);
1011 return;
1012 }
1013
1014 /* clear request */
1015 if (dma_ctrl == 0xDEEA0000) {
1016 s->regs[R_DMA_CTRL] &= ~(DMA_CTRL_REQUEST | DMA_CTRL_GRANT);
1017 return;
1018 }
1019
1020 if (!aspeed_smc_dma_granted(s)) {
1021 aspeed_smc_error("DMA not granted");
1022 return;
1023 }
1024
1025 aspeed_smc_dma_ctrl(s, dma_ctrl);
1026 s->regs[R_DMA_CTRL] &= ~(DMA_CTRL_REQUEST | DMA_CTRL_GRANT);
1027 }
1028
1029 static void aspeed_smc_write(void *opaque, hwaddr addr, uint64_t data,
1030 unsigned int size)
1031 {
1032 AspeedSMCState *s = ASPEED_SMC(opaque);
1033 AspeedSMCClass *asc = ASPEED_SMC_GET_CLASS(s);
1034 uint32_t value = data;
1035
1036 trace_aspeed_smc_write(addr, size, data);
1037
1038 addr >>= 2;
1039
1040 if (addr == s->r_conf ||
1041 (addr >= s->r_timings &&
1042 addr < s->r_timings + asc->nregs_timings) ||
1043 addr == s->r_ce_ctrl) {
1044 s->regs[addr] = value;
1045 } else if (addr >= s->r_ctrl0 && addr < s->r_ctrl0 + asc->cs_num_max) {
1046 int cs = addr - s->r_ctrl0;
1047 aspeed_smc_flash_update_ctrl(&s->flashes[cs], value);
1048 } else if (addr >= R_SEG_ADDR0 &&
1049 addr < R_SEG_ADDR0 + asc->cs_num_max) {
1050 int cs = addr - R_SEG_ADDR0;
1051
1052 if (value != s->regs[R_SEG_ADDR0 + cs]) {
1053 aspeed_smc_flash_set_segment(s, cs, value);
1054 }
1055 } else if (addr == R_CE_CMD_CTRL) {
1056 s->regs[addr] = value & 0xff;
1057 } else if (addr == R_DUMMY_DATA) {
1058 s->regs[addr] = value & 0xff;
1059 } else if (aspeed_smc_has_wdt_control(asc) && addr == R_FMC_WDT2_CTRL) {
1060 s->regs[addr] = value & FMC_WDT2_CTRL_EN;
1061 } else if (addr == R_INTR_CTRL) {
1062 s->regs[addr] = value;
1063 } else if (aspeed_smc_has_dma(asc) && addr == R_DMA_CTRL) {
1064 asc->dma_ctrl(s, value);
1065 } else if (aspeed_smc_has_dma(asc) && addr == R_DMA_DRAM_ADDR &&
1066 aspeed_smc_dma_granted(s)) {
1067 s->regs[addr] = DMA_DRAM_ADDR(asc, value);
1068 } else if (aspeed_smc_has_dma(asc) && addr == R_DMA_FLASH_ADDR &&
1069 aspeed_smc_dma_granted(s)) {
1070 s->regs[addr] = DMA_FLASH_ADDR(asc, value);
1071 } else if (aspeed_smc_has_dma(asc) && addr == R_DMA_LEN &&
1072 aspeed_smc_dma_granted(s)) {
1073 s->regs[addr] = DMA_LENGTH(value);
1074 } else {
1075 qemu_log_mask(LOG_UNIMP, "%s: not implemented: 0x%" HWADDR_PRIx "\n",
1076 __func__, addr);
1077 return;
1078 }
1079 }
1080
1081 static const MemoryRegionOps aspeed_smc_ops = {
1082 .read = aspeed_smc_read,
1083 .write = aspeed_smc_write,
1084 .endianness = DEVICE_LITTLE_ENDIAN,
1085 };
1086
1087 static void aspeed_smc_instance_init(Object *obj)
1088 {
1089 AspeedSMCState *s = ASPEED_SMC(obj);
1090 AspeedSMCClass *asc = ASPEED_SMC_GET_CLASS(s);
1091 int i;
1092
1093 for (i = 0; i < asc->cs_num_max; i++) {
1094 object_initialize_child(obj, "flash[*]", &s->flashes[i],
1095 TYPE_ASPEED_SMC_FLASH);
1096 }
1097 }
1098
1099 /*
1100 * Initialize the custom address spaces for DMAs
1101 */
1102 static void aspeed_smc_dma_setup(AspeedSMCState *s, Error **errp)
1103 {
1104 if (!s->dram_mr) {
1105 error_setg(errp, TYPE_ASPEED_SMC ": 'dram' link not set");
1106 return;
1107 }
1108
1109 address_space_init(&s->flash_as, &s->mmio_flash,
1110 TYPE_ASPEED_SMC ".dma-flash");
1111 address_space_init(&s->dram_as, s->dram_mr,
1112 TYPE_ASPEED_SMC ".dma-dram");
1113 }
1114
1115 static void aspeed_smc_realize(DeviceState *dev, Error **errp)
1116 {
1117 SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
1118 AspeedSMCState *s = ASPEED_SMC(dev);
1119 AspeedSMCClass *asc = ASPEED_SMC_GET_CLASS(s);
1120 int i;
1121 hwaddr offset = 0;
1122
1123 /* keep a copy under AspeedSMCState to speed up accesses */
1124 s->r_conf = asc->r_conf;
1125 s->r_ce_ctrl = asc->r_ce_ctrl;
1126 s->r_ctrl0 = asc->r_ctrl0;
1127 s->r_timings = asc->r_timings;
1128 s->conf_enable_w0 = asc->conf_enable_w0;
1129
1130 /* DMA irq. Keep it first for the initialization in the SoC */
1131 sysbus_init_irq(sbd, &s->irq);
1132
1133 s->spi = ssi_create_bus(dev, NULL);
1134
1135 /* Setup cs_lines for peripherals */
1136 s->cs_lines = g_new0(qemu_irq, asc->cs_num_max);
1137 qdev_init_gpio_out_named(DEVICE(s), s->cs_lines, "cs", asc->cs_num_max);
1138
1139 /* The memory region for the controller registers */
1140 memory_region_init_io(&s->mmio, OBJECT(s), &aspeed_smc_ops, s,
1141 TYPE_ASPEED_SMC, asc->nregs * 4);
1142 sysbus_init_mmio(sbd, &s->mmio);
1143
1144 /*
1145 * The container memory region representing the address space
1146 * window in which the flash modules are mapped. The size and
1147 * address depends on the SoC model and controller type.
1148 */
1149 memory_region_init(&s->mmio_flash_container, OBJECT(s),
1150 TYPE_ASPEED_SMC ".container",
1151 asc->flash_window_size);
1152 sysbus_init_mmio(sbd, &s->mmio_flash_container);
1153
1154 memory_region_init_io(&s->mmio_flash, OBJECT(s),
1155 &aspeed_smc_flash_default_ops, s,
1156 TYPE_ASPEED_SMC ".flash",
1157 asc->flash_window_size);
1158 memory_region_add_subregion(&s->mmio_flash_container, 0x0,
1159 &s->mmio_flash);
1160
1161 /*
1162 * Let's create a sub memory region for each possible peripheral. All
1163 * have a configurable memory segment in the overall flash mapping
1164 * window of the controller but, there is not necessarily a flash
1165 * module behind to handle the memory accesses. This depends on
1166 * the board configuration.
1167 */
1168 for (i = 0; i < asc->cs_num_max; ++i) {
1169 AspeedSMCFlash *fl = &s->flashes[i];
1170
1171 if (!object_property_set_link(OBJECT(fl), "controller", OBJECT(s),
1172 errp)) {
1173 return;
1174 }
1175 if (!object_property_set_uint(OBJECT(fl), "cs", i, errp)) {
1176 return;
1177 }
1178 if (!sysbus_realize(SYS_BUS_DEVICE(fl), errp)) {
1179 return;
1180 }
1181
1182 memory_region_add_subregion(&s->mmio_flash, offset, &fl->mmio);
1183 offset += asc->segments[i].size;
1184 }
1185
1186 /* DMA support */
1187 if (aspeed_smc_has_dma(asc)) {
1188 aspeed_smc_dma_setup(s, errp);
1189 }
1190 }
1191
1192 static const VMStateDescription vmstate_aspeed_smc = {
1193 .name = "aspeed.smc",
1194 .version_id = 2,
1195 .minimum_version_id = 2,
1196 .fields = (VMStateField[]) {
1197 VMSTATE_UINT32_ARRAY(regs, AspeedSMCState, ASPEED_SMC_R_MAX),
1198 VMSTATE_UINT8(snoop_index, AspeedSMCState),
1199 VMSTATE_UINT8(snoop_dummies, AspeedSMCState),
1200 VMSTATE_END_OF_LIST()
1201 }
1202 };
1203
1204 static Property aspeed_smc_properties[] = {
1205 DEFINE_PROP_BOOL("inject-failure", AspeedSMCState, inject_failure, false),
1206 DEFINE_PROP_LINK("dram", AspeedSMCState, dram_mr,
1207 TYPE_MEMORY_REGION, MemoryRegion *),
1208 DEFINE_PROP_END_OF_LIST(),
1209 };
1210
1211 static void aspeed_smc_class_init(ObjectClass *klass, void *data)
1212 {
1213 DeviceClass *dc = DEVICE_CLASS(klass);
1214
1215 dc->realize = aspeed_smc_realize;
1216 dc->reset = aspeed_smc_reset;
1217 device_class_set_props(dc, aspeed_smc_properties);
1218 dc->vmsd = &vmstate_aspeed_smc;
1219 }
1220
1221 static const TypeInfo aspeed_smc_info = {
1222 .name = TYPE_ASPEED_SMC,
1223 .parent = TYPE_SYS_BUS_DEVICE,
1224 .instance_init = aspeed_smc_instance_init,
1225 .instance_size = sizeof(AspeedSMCState),
1226 .class_size = sizeof(AspeedSMCClass),
1227 .class_init = aspeed_smc_class_init,
1228 .abstract = true,
1229 };
1230
1231 static void aspeed_smc_flash_realize(DeviceState *dev, Error **errp)
1232 {
1233 AspeedSMCFlash *s = ASPEED_SMC_FLASH(dev);
1234 g_autofree char *name = g_strdup_printf(TYPE_ASPEED_SMC_FLASH ".%d", s->cs);
1235
1236 if (!s->controller) {
1237 error_setg(errp, TYPE_ASPEED_SMC_FLASH ": 'controller' link not set");
1238 return;
1239 }
1240
1241 s->asc = ASPEED_SMC_GET_CLASS(s->controller);
1242
1243 /*
1244 * Use the default segment value to size the memory region. This
1245 * can be changed by FW at runtime.
1246 */
1247 memory_region_init_io(&s->mmio, OBJECT(s), &aspeed_smc_flash_ops,
1248 s, name, s->asc->segments[s->cs].size);
1249 sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->mmio);
1250 }
1251
1252 static Property aspeed_smc_flash_properties[] = {
1253 DEFINE_PROP_UINT8("cs", AspeedSMCFlash, cs, 0),
1254 DEFINE_PROP_LINK("controller", AspeedSMCFlash, controller, TYPE_ASPEED_SMC,
1255 AspeedSMCState *),
1256 DEFINE_PROP_END_OF_LIST(),
1257 };
1258
1259 static void aspeed_smc_flash_class_init(ObjectClass *klass, void *data)
1260 {
1261 DeviceClass *dc = DEVICE_CLASS(klass);
1262
1263 dc->desc = "Aspeed SMC Flash device region";
1264 dc->realize = aspeed_smc_flash_realize;
1265 device_class_set_props(dc, aspeed_smc_flash_properties);
1266 }
1267
1268 static const TypeInfo aspeed_smc_flash_info = {
1269 .name = TYPE_ASPEED_SMC_FLASH,
1270 .parent = TYPE_SYS_BUS_DEVICE,
1271 .instance_size = sizeof(AspeedSMCFlash),
1272 .class_init = aspeed_smc_flash_class_init,
1273 };
1274
1275 /*
1276 * The Segment Registers of the AST2400 and AST2500 have a 8MB
1277 * unit. The address range of a flash SPI peripheral is encoded with
1278 * absolute addresses which should be part of the overall controller
1279 * window.
1280 */
1281 static uint32_t aspeed_smc_segment_to_reg(const AspeedSMCState *s,
1282 const AspeedSegments *seg)
1283 {
1284 uint32_t reg = 0;
1285 reg |= ((seg->addr >> 23) & SEG_START_MASK) << SEG_START_SHIFT;
1286 reg |= (((seg->addr + seg->size) >> 23) & SEG_END_MASK) << SEG_END_SHIFT;
1287 return reg;
1288 }
1289
1290 static void aspeed_smc_reg_to_segment(const AspeedSMCState *s,
1291 uint32_t reg, AspeedSegments *seg)
1292 {
1293 seg->addr = ((reg >> SEG_START_SHIFT) & SEG_START_MASK) << 23;
1294 seg->size = (((reg >> SEG_END_SHIFT) & SEG_END_MASK) << 23) - seg->addr;
1295 }
1296
1297 static const AspeedSegments aspeed_2400_smc_segments[] = {
1298 { 0x10000000, 32 * MiB },
1299 };
1300
1301 static void aspeed_2400_smc_class_init(ObjectClass *klass, void *data)
1302 {
1303 DeviceClass *dc = DEVICE_CLASS(klass);
1304 AspeedSMCClass *asc = ASPEED_SMC_CLASS(klass);
1305
1306 dc->desc = "Aspeed 2400 SMC Controller";
1307 asc->r_conf = R_CONF;
1308 asc->r_ce_ctrl = R_CE_CTRL;
1309 asc->r_ctrl0 = R_CTRL0;
1310 asc->r_timings = R_TIMINGS;
1311 asc->nregs_timings = 1;
1312 asc->conf_enable_w0 = CONF_ENABLE_W0;
1313 asc->cs_num_max = 1;
1314 asc->segments = aspeed_2400_smc_segments;
1315 asc->flash_window_base = 0x10000000;
1316 asc->flash_window_size = 0x6000000;
1317 asc->features = 0x0;
1318 asc->nregs = ASPEED_SMC_R_SMC_MAX;
1319 asc->segment_to_reg = aspeed_smc_segment_to_reg;
1320 asc->reg_to_segment = aspeed_smc_reg_to_segment;
1321 asc->dma_ctrl = aspeed_smc_dma_ctrl;
1322 }
1323
1324 static const TypeInfo aspeed_2400_smc_info = {
1325 .name = "aspeed.smc-ast2400",
1326 .parent = TYPE_ASPEED_SMC,
1327 .class_init = aspeed_2400_smc_class_init,
1328 };
1329
1330 static const uint32_t aspeed_2400_fmc_resets[ASPEED_SMC_R_MAX] = {
1331 /*
1332 * CE0 and CE1 types are HW strapped in SCU70. Do it here to
1333 * simplify the model.
1334 */
1335 [R_CONF] = CONF_FLASH_TYPE_SPI << CONF_FLASH_TYPE0,
1336 };
1337
1338 static const AspeedSegments aspeed_2400_fmc_segments[] = {
1339 { 0x20000000, 64 * MiB }, /* start address is readonly */
1340 { 0x24000000, 32 * MiB },
1341 { 0x26000000, 32 * MiB },
1342 { 0x28000000, 32 * MiB },
1343 { 0x2A000000, 32 * MiB }
1344 };
1345
1346 static void aspeed_2400_fmc_class_init(ObjectClass *klass, void *data)
1347 {
1348 DeviceClass *dc = DEVICE_CLASS(klass);
1349 AspeedSMCClass *asc = ASPEED_SMC_CLASS(klass);
1350
1351 dc->desc = "Aspeed 2400 FMC Controller";
1352 asc->r_conf = R_CONF;
1353 asc->r_ce_ctrl = R_CE_CTRL;
1354 asc->r_ctrl0 = R_CTRL0;
1355 asc->r_timings = R_TIMINGS;
1356 asc->nregs_timings = 1;
1357 asc->conf_enable_w0 = CONF_ENABLE_W0;
1358 asc->cs_num_max = 5;
1359 asc->segments = aspeed_2400_fmc_segments;
1360 asc->segment_addr_mask = 0xffff0000;
1361 asc->resets = aspeed_2400_fmc_resets;
1362 asc->flash_window_base = 0x20000000;
1363 asc->flash_window_size = 0x10000000;
1364 asc->features = ASPEED_SMC_FEATURE_DMA;
1365 asc->dma_flash_mask = 0x0FFFFFFC;
1366 asc->dma_dram_mask = 0x1FFFFFFC;
1367 asc->nregs = ASPEED_SMC_R_MAX;
1368 asc->segment_to_reg = aspeed_smc_segment_to_reg;
1369 asc->reg_to_segment = aspeed_smc_reg_to_segment;
1370 asc->dma_ctrl = aspeed_smc_dma_ctrl;
1371 }
1372
1373 static const TypeInfo aspeed_2400_fmc_info = {
1374 .name = "aspeed.fmc-ast2400",
1375 .parent = TYPE_ASPEED_SMC,
1376 .class_init = aspeed_2400_fmc_class_init,
1377 };
1378
1379 static const AspeedSegments aspeed_2400_spi1_segments[] = {
1380 { 0x30000000, 64 * MiB },
1381 };
1382
1383 static int aspeed_2400_spi1_addr_width(const AspeedSMCState *s)
1384 {
1385 return s->regs[R_SPI_CTRL0] & CTRL_AST2400_SPI_4BYTE ? 4 : 3;
1386 }
1387
1388 static void aspeed_2400_spi1_class_init(ObjectClass *klass, void *data)
1389 {
1390 DeviceClass *dc = DEVICE_CLASS(klass);
1391 AspeedSMCClass *asc = ASPEED_SMC_CLASS(klass);
1392
1393 dc->desc = "Aspeed 2400 SPI1 Controller";
1394 asc->r_conf = R_SPI_CONF;
1395 asc->r_ce_ctrl = 0xff;
1396 asc->r_ctrl0 = R_SPI_CTRL0;
1397 asc->r_timings = R_SPI_TIMINGS;
1398 asc->nregs_timings = 1;
1399 asc->conf_enable_w0 = SPI_CONF_ENABLE_W0;
1400 asc->cs_num_max = 1;
1401 asc->segments = aspeed_2400_spi1_segments;
1402 asc->flash_window_base = 0x30000000;
1403 asc->flash_window_size = 0x10000000;
1404 asc->features = 0x0;
1405 asc->nregs = ASPEED_SMC_R_SPI_MAX;
1406 asc->segment_to_reg = aspeed_smc_segment_to_reg;
1407 asc->reg_to_segment = aspeed_smc_reg_to_segment;
1408 asc->dma_ctrl = aspeed_smc_dma_ctrl;
1409 asc->addr_width = aspeed_2400_spi1_addr_width;
1410 }
1411
1412 static const TypeInfo aspeed_2400_spi1_info = {
1413 .name = "aspeed.spi1-ast2400",
1414 .parent = TYPE_ASPEED_SMC,
1415 .class_init = aspeed_2400_spi1_class_init,
1416 };
1417
1418 static const uint32_t aspeed_2500_fmc_resets[ASPEED_SMC_R_MAX] = {
1419 [R_CONF] = (CONF_FLASH_TYPE_SPI << CONF_FLASH_TYPE0 |
1420 CONF_FLASH_TYPE_SPI << CONF_FLASH_TYPE1),
1421 };
1422
1423 static const AspeedSegments aspeed_2500_fmc_segments[] = {
1424 { 0x20000000, 128 * MiB }, /* start address is readonly */
1425 { 0x28000000, 32 * MiB },
1426 { 0x2A000000, 32 * MiB },
1427 };
1428
1429 static void aspeed_2500_fmc_class_init(ObjectClass *klass, void *data)
1430 {
1431 DeviceClass *dc = DEVICE_CLASS(klass);
1432 AspeedSMCClass *asc = ASPEED_SMC_CLASS(klass);
1433
1434 dc->desc = "Aspeed 2600 FMC Controller";
1435 asc->r_conf = R_CONF;
1436 asc->r_ce_ctrl = R_CE_CTRL;
1437 asc->r_ctrl0 = R_CTRL0;
1438 asc->r_timings = R_TIMINGS;
1439 asc->nregs_timings = 1;
1440 asc->conf_enable_w0 = CONF_ENABLE_W0;
1441 asc->cs_num_max = 3;
1442 asc->segments = aspeed_2500_fmc_segments;
1443 asc->segment_addr_mask = 0xffff0000;
1444 asc->resets = aspeed_2500_fmc_resets;
1445 asc->flash_window_base = 0x20000000;
1446 asc->flash_window_size = 0x10000000;
1447 asc->features = ASPEED_SMC_FEATURE_DMA;
1448 asc->dma_flash_mask = 0x0FFFFFFC;
1449 asc->dma_dram_mask = 0x3FFFFFFC;
1450 asc->nregs = ASPEED_SMC_R_MAX;
1451 asc->segment_to_reg = aspeed_smc_segment_to_reg;
1452 asc->reg_to_segment = aspeed_smc_reg_to_segment;
1453 asc->dma_ctrl = aspeed_smc_dma_ctrl;
1454 }
1455
1456 static const TypeInfo aspeed_2500_fmc_info = {
1457 .name = "aspeed.fmc-ast2500",
1458 .parent = TYPE_ASPEED_SMC,
1459 .class_init = aspeed_2500_fmc_class_init,
1460 };
1461
1462 static const AspeedSegments aspeed_2500_spi1_segments[] = {
1463 { 0x30000000, 32 * MiB }, /* start address is readonly */
1464 { 0x32000000, 96 * MiB }, /* end address is readonly */
1465 };
1466
1467 static void aspeed_2500_spi1_class_init(ObjectClass *klass, void *data)
1468 {
1469 DeviceClass *dc = DEVICE_CLASS(klass);
1470 AspeedSMCClass *asc = ASPEED_SMC_CLASS(klass);
1471
1472 dc->desc = "Aspeed 2600 SPI1 Controller";
1473 asc->r_conf = R_CONF;
1474 asc->r_ce_ctrl = R_CE_CTRL;
1475 asc->r_ctrl0 = R_CTRL0;
1476 asc->r_timings = R_TIMINGS;
1477 asc->nregs_timings = 1;
1478 asc->conf_enable_w0 = CONF_ENABLE_W0;
1479 asc->cs_num_max = 2;
1480 asc->segments = aspeed_2500_spi1_segments;
1481 asc->segment_addr_mask = 0xffff0000;
1482 asc->flash_window_base = 0x30000000;
1483 asc->flash_window_size = 0x8000000;
1484 asc->features = 0x0;
1485 asc->nregs = ASPEED_SMC_R_MAX;
1486 asc->segment_to_reg = aspeed_smc_segment_to_reg;
1487 asc->reg_to_segment = aspeed_smc_reg_to_segment;
1488 asc->dma_ctrl = aspeed_smc_dma_ctrl;
1489 }
1490
1491 static const TypeInfo aspeed_2500_spi1_info = {
1492 .name = "aspeed.spi1-ast2500",
1493 .parent = TYPE_ASPEED_SMC,
1494 .class_init = aspeed_2500_spi1_class_init,
1495 };
1496
1497 static const AspeedSegments aspeed_2500_spi2_segments[] = {
1498 { 0x38000000, 32 * MiB }, /* start address is readonly */
1499 { 0x3A000000, 96 * MiB }, /* end address is readonly */
1500 };
1501
1502 static void aspeed_2500_spi2_class_init(ObjectClass *klass, void *data)
1503 {
1504 DeviceClass *dc = DEVICE_CLASS(klass);
1505 AspeedSMCClass *asc = ASPEED_SMC_CLASS(klass);
1506
1507 dc->desc = "Aspeed 2600 SPI2 Controller";
1508 asc->r_conf = R_CONF;
1509 asc->r_ce_ctrl = R_CE_CTRL;
1510 asc->r_ctrl0 = R_CTRL0;
1511 asc->r_timings = R_TIMINGS;
1512 asc->nregs_timings = 1;
1513 asc->conf_enable_w0 = CONF_ENABLE_W0;
1514 asc->cs_num_max = 2;
1515 asc->segments = aspeed_2500_spi2_segments;
1516 asc->segment_addr_mask = 0xffff0000;
1517 asc->flash_window_base = 0x38000000;
1518 asc->flash_window_size = 0x8000000;
1519 asc->features = 0x0;
1520 asc->nregs = ASPEED_SMC_R_MAX;
1521 asc->segment_to_reg = aspeed_smc_segment_to_reg;
1522 asc->reg_to_segment = aspeed_smc_reg_to_segment;
1523 asc->dma_ctrl = aspeed_smc_dma_ctrl;
1524 }
1525
1526 static const TypeInfo aspeed_2500_spi2_info = {
1527 .name = "aspeed.spi2-ast2500",
1528 .parent = TYPE_ASPEED_SMC,
1529 .class_init = aspeed_2500_spi2_class_init,
1530 };
1531
1532 /*
1533 * The Segment Registers of the AST2600 have a 1MB unit. The address
1534 * range of a flash SPI peripheral is encoded with offsets in the overall
1535 * controller window. The previous SoC AST2400 and AST2500 used
1536 * absolute addresses. Only bits [27:20] are relevant and the end
1537 * address is an upper bound limit.
1538 */
1539 #define AST2600_SEG_ADDR_MASK 0x0ff00000
1540
1541 static uint32_t aspeed_2600_smc_segment_to_reg(const AspeedSMCState *s,
1542 const AspeedSegments *seg)
1543 {
1544 uint32_t reg = 0;
1545
1546 /* Disabled segments have a nil register */
1547 if (!seg->size) {
1548 return 0;
1549 }
1550
1551 reg |= (seg->addr & AST2600_SEG_ADDR_MASK) >> 16; /* start offset */
1552 reg |= (seg->addr + seg->size - 1) & AST2600_SEG_ADDR_MASK; /* end offset */
1553 return reg;
1554 }
1555
1556 static void aspeed_2600_smc_reg_to_segment(const AspeedSMCState *s,
1557 uint32_t reg, AspeedSegments *seg)
1558 {
1559 uint32_t start_offset = (reg << 16) & AST2600_SEG_ADDR_MASK;
1560 uint32_t end_offset = reg & AST2600_SEG_ADDR_MASK;
1561 AspeedSMCClass *asc = ASPEED_SMC_GET_CLASS(s);
1562
1563 if (reg) {
1564 seg->addr = asc->flash_window_base + start_offset;
1565 seg->size = end_offset + MiB - start_offset;
1566 } else {
1567 seg->addr = asc->flash_window_base;
1568 seg->size = 0;
1569 }
1570 }
1571
1572 static const uint32_t aspeed_2600_fmc_resets[ASPEED_SMC_R_MAX] = {
1573 [R_CONF] = (CONF_FLASH_TYPE_SPI << CONF_FLASH_TYPE0 |
1574 CONF_FLASH_TYPE_SPI << CONF_FLASH_TYPE1 |
1575 CONF_FLASH_TYPE_SPI << CONF_FLASH_TYPE2),
1576 };
1577
1578 static const AspeedSegments aspeed_2600_fmc_segments[] = {
1579 { 0x0, 128 * MiB }, /* start address is readonly */
1580 { 128 * MiB, 128 * MiB }, /* default is disabled but needed for -kernel */
1581 { 0x0, 0 }, /* disabled */
1582 };
1583
1584 static void aspeed_2600_fmc_class_init(ObjectClass *klass, void *data)
1585 {
1586 DeviceClass *dc = DEVICE_CLASS(klass);
1587 AspeedSMCClass *asc = ASPEED_SMC_CLASS(klass);
1588
1589 dc->desc = "Aspeed 2600 FMC Controller";
1590 asc->r_conf = R_CONF;
1591 asc->r_ce_ctrl = R_CE_CTRL;
1592 asc->r_ctrl0 = R_CTRL0;
1593 asc->r_timings = R_TIMINGS;
1594 asc->nregs_timings = 1;
1595 asc->conf_enable_w0 = CONF_ENABLE_W0;
1596 asc->cs_num_max = 3;
1597 asc->segments = aspeed_2600_fmc_segments;
1598 asc->segment_addr_mask = 0x0ff00ff0;
1599 asc->resets = aspeed_2600_fmc_resets;
1600 asc->flash_window_base = 0x20000000;
1601 asc->flash_window_size = 0x10000000;
1602 asc->features = ASPEED_SMC_FEATURE_DMA |
1603 ASPEED_SMC_FEATURE_WDT_CONTROL;
1604 asc->dma_flash_mask = 0x0FFFFFFC;
1605 asc->dma_dram_mask = 0x3FFFFFFC;
1606 asc->nregs = ASPEED_SMC_R_MAX;
1607 asc->segment_to_reg = aspeed_2600_smc_segment_to_reg;
1608 asc->reg_to_segment = aspeed_2600_smc_reg_to_segment;
1609 asc->dma_ctrl = aspeed_2600_smc_dma_ctrl;
1610 }
1611
1612 static const TypeInfo aspeed_2600_fmc_info = {
1613 .name = "aspeed.fmc-ast2600",
1614 .parent = TYPE_ASPEED_SMC,
1615 .class_init = aspeed_2600_fmc_class_init,
1616 };
1617
1618 static const AspeedSegments aspeed_2600_spi1_segments[] = {
1619 { 0x0, 128 * MiB }, /* start address is readonly */
1620 { 0x0, 0 }, /* disabled */
1621 };
1622
1623 static void aspeed_2600_spi1_class_init(ObjectClass *klass, void *data)
1624 {
1625 DeviceClass *dc = DEVICE_CLASS(klass);
1626 AspeedSMCClass *asc = ASPEED_SMC_CLASS(klass);
1627
1628 dc->desc = "Aspeed 2600 SPI1 Controller";
1629 asc->r_conf = R_CONF;
1630 asc->r_ce_ctrl = R_CE_CTRL;
1631 asc->r_ctrl0 = R_CTRL0;
1632 asc->r_timings = R_TIMINGS;
1633 asc->nregs_timings = 2;
1634 asc->conf_enable_w0 = CONF_ENABLE_W0;
1635 asc->cs_num_max = 2;
1636 asc->segments = aspeed_2600_spi1_segments;
1637 asc->segment_addr_mask = 0x0ff00ff0;
1638 asc->flash_window_base = 0x30000000;
1639 asc->flash_window_size = 0x10000000;
1640 asc->features = ASPEED_SMC_FEATURE_DMA |
1641 ASPEED_SMC_FEATURE_DMA_GRANT;
1642 asc->dma_flash_mask = 0x0FFFFFFC;
1643 asc->dma_dram_mask = 0x3FFFFFFC;
1644 asc->nregs = ASPEED_SMC_R_MAX;
1645 asc->segment_to_reg = aspeed_2600_smc_segment_to_reg;
1646 asc->reg_to_segment = aspeed_2600_smc_reg_to_segment;
1647 asc->dma_ctrl = aspeed_2600_smc_dma_ctrl;
1648 }
1649
1650 static const TypeInfo aspeed_2600_spi1_info = {
1651 .name = "aspeed.spi1-ast2600",
1652 .parent = TYPE_ASPEED_SMC,
1653 .class_init = aspeed_2600_spi1_class_init,
1654 };
1655
1656 static const AspeedSegments aspeed_2600_spi2_segments[] = {
1657 { 0x0, 128 * MiB }, /* start address is readonly */
1658 { 0x0, 0 }, /* disabled */
1659 { 0x0, 0 }, /* disabled */
1660 };
1661
1662 static void aspeed_2600_spi2_class_init(ObjectClass *klass, void *data)
1663 {
1664 DeviceClass *dc = DEVICE_CLASS(klass);
1665 AspeedSMCClass *asc = ASPEED_SMC_CLASS(klass);
1666
1667 dc->desc = "Aspeed 2600 SPI2 Controller";
1668 asc->r_conf = R_CONF;
1669 asc->r_ce_ctrl = R_CE_CTRL;
1670 asc->r_ctrl0 = R_CTRL0;
1671 asc->r_timings = R_TIMINGS;
1672 asc->nregs_timings = 3;
1673 asc->conf_enable_w0 = CONF_ENABLE_W0;
1674 asc->cs_num_max = 3;
1675 asc->segments = aspeed_2600_spi2_segments;
1676 asc->segment_addr_mask = 0x0ff00ff0;
1677 asc->flash_window_base = 0x50000000;
1678 asc->flash_window_size = 0x10000000;
1679 asc->features = ASPEED_SMC_FEATURE_DMA |
1680 ASPEED_SMC_FEATURE_DMA_GRANT;
1681 asc->dma_flash_mask = 0x0FFFFFFC;
1682 asc->dma_dram_mask = 0x3FFFFFFC;
1683 asc->nregs = ASPEED_SMC_R_MAX;
1684 asc->segment_to_reg = aspeed_2600_smc_segment_to_reg;
1685 asc->reg_to_segment = aspeed_2600_smc_reg_to_segment;
1686 asc->dma_ctrl = aspeed_2600_smc_dma_ctrl;
1687 }
1688
1689 static const TypeInfo aspeed_2600_spi2_info = {
1690 .name = "aspeed.spi2-ast2600",
1691 .parent = TYPE_ASPEED_SMC,
1692 .class_init = aspeed_2600_spi2_class_init,
1693 };
1694
1695 /*
1696 * The FMC Segment Registers of the AST1030 have a 512KB unit.
1697 * Only bits [27:19] are used for decoding.
1698 */
1699 #define AST1030_SEG_ADDR_MASK 0x0ff80000
1700
1701 static uint32_t aspeed_1030_smc_segment_to_reg(const AspeedSMCState *s,
1702 const AspeedSegments *seg)
1703 {
1704 uint32_t reg = 0;
1705
1706 /* Disabled segments have a nil register */
1707 if (!seg->size) {
1708 return 0;
1709 }
1710
1711 reg |= (seg->addr & AST1030_SEG_ADDR_MASK) >> 16; /* start offset */
1712 reg |= (seg->addr + seg->size - 1) & AST1030_SEG_ADDR_MASK; /* end offset */
1713 return reg;
1714 }
1715
1716 static void aspeed_1030_smc_reg_to_segment(const AspeedSMCState *s,
1717 uint32_t reg, AspeedSegments *seg)
1718 {
1719 uint32_t start_offset = (reg << 16) & AST1030_SEG_ADDR_MASK;
1720 uint32_t end_offset = reg & AST1030_SEG_ADDR_MASK;
1721 AspeedSMCClass *asc = ASPEED_SMC_GET_CLASS(s);
1722
1723 if (reg) {
1724 seg->addr = asc->flash_window_base + start_offset;
1725 seg->size = end_offset + (512 * KiB) - start_offset;
1726 } else {
1727 seg->addr = asc->flash_window_base;
1728 seg->size = 0;
1729 }
1730 }
1731
1732 static const uint32_t aspeed_1030_fmc_resets[ASPEED_SMC_R_MAX] = {
1733 [R_CONF] = (CONF_FLASH_TYPE_SPI << CONF_FLASH_TYPE0 |
1734 CONF_FLASH_TYPE_SPI << CONF_FLASH_TYPE1),
1735 };
1736
1737 static const AspeedSegments aspeed_1030_fmc_segments[] = {
1738 { 0x0, 128 * MiB }, /* start address is readonly */
1739 { 128 * MiB, 128 * MiB }, /* default is disabled but needed for -kernel */
1740 { 0x0, 0 }, /* disabled */
1741 };
1742
1743 static void aspeed_1030_fmc_class_init(ObjectClass *klass, void *data)
1744 {
1745 DeviceClass *dc = DEVICE_CLASS(klass);
1746 AspeedSMCClass *asc = ASPEED_SMC_CLASS(klass);
1747
1748 dc->desc = "Aspeed 1030 FMC Controller";
1749 asc->r_conf = R_CONF;
1750 asc->r_ce_ctrl = R_CE_CTRL;
1751 asc->r_ctrl0 = R_CTRL0;
1752 asc->r_timings = R_TIMINGS;
1753 asc->nregs_timings = 2;
1754 asc->conf_enable_w0 = CONF_ENABLE_W0;
1755 asc->cs_num_max = 2;
1756 asc->segments = aspeed_1030_fmc_segments;
1757 asc->segment_addr_mask = 0x0ff80ff8;
1758 asc->resets = aspeed_1030_fmc_resets;
1759 asc->flash_window_base = 0x80000000;
1760 asc->flash_window_size = 0x10000000;
1761 asc->features = ASPEED_SMC_FEATURE_DMA;
1762 asc->dma_flash_mask = 0x0FFFFFFC;
1763 asc->dma_dram_mask = 0x000BFFFC;
1764 asc->nregs = ASPEED_SMC_R_MAX;
1765 asc->segment_to_reg = aspeed_1030_smc_segment_to_reg;
1766 asc->reg_to_segment = aspeed_1030_smc_reg_to_segment;
1767 asc->dma_ctrl = aspeed_2600_smc_dma_ctrl;
1768 }
1769
1770 static const TypeInfo aspeed_1030_fmc_info = {
1771 .name = "aspeed.fmc-ast1030",
1772 .parent = TYPE_ASPEED_SMC,
1773 .class_init = aspeed_1030_fmc_class_init,
1774 };
1775
1776 static const AspeedSegments aspeed_1030_spi1_segments[] = {
1777 { 0x0, 128 * MiB }, /* start address is readonly */
1778 { 0x0, 0 }, /* disabled */
1779 };
1780
1781 static void aspeed_1030_spi1_class_init(ObjectClass *klass, void *data)
1782 {
1783 DeviceClass *dc = DEVICE_CLASS(klass);
1784 AspeedSMCClass *asc = ASPEED_SMC_CLASS(klass);
1785
1786 dc->desc = "Aspeed 1030 SPI1 Controller";
1787 asc->r_conf = R_CONF;
1788 asc->r_ce_ctrl = R_CE_CTRL;
1789 asc->r_ctrl0 = R_CTRL0;
1790 asc->r_timings = R_TIMINGS;
1791 asc->nregs_timings = 2;
1792 asc->conf_enable_w0 = CONF_ENABLE_W0;
1793 asc->cs_num_max = 2;
1794 asc->segments = aspeed_1030_spi1_segments;
1795 asc->segment_addr_mask = 0x0ff00ff0;
1796 asc->flash_window_base = 0x90000000;
1797 asc->flash_window_size = 0x10000000;
1798 asc->features = ASPEED_SMC_FEATURE_DMA;
1799 asc->dma_flash_mask = 0x0FFFFFFC;
1800 asc->dma_dram_mask = 0x000BFFFC;
1801 asc->nregs = ASPEED_SMC_R_MAX;
1802 asc->segment_to_reg = aspeed_2600_smc_segment_to_reg;
1803 asc->reg_to_segment = aspeed_2600_smc_reg_to_segment;
1804 asc->dma_ctrl = aspeed_2600_smc_dma_ctrl;
1805 }
1806
1807 static const TypeInfo aspeed_1030_spi1_info = {
1808 .name = "aspeed.spi1-ast1030",
1809 .parent = TYPE_ASPEED_SMC,
1810 .class_init = aspeed_1030_spi1_class_init,
1811 };
1812 static const AspeedSegments aspeed_1030_spi2_segments[] = {
1813 { 0x0, 128 * MiB }, /* start address is readonly */
1814 { 0x0, 0 }, /* disabled */
1815 };
1816
1817 static void aspeed_1030_spi2_class_init(ObjectClass *klass, void *data)
1818 {
1819 DeviceClass *dc = DEVICE_CLASS(klass);
1820 AspeedSMCClass *asc = ASPEED_SMC_CLASS(klass);
1821
1822 dc->desc = "Aspeed 1030 SPI2 Controller";
1823 asc->r_conf = R_CONF;
1824 asc->r_ce_ctrl = R_CE_CTRL;
1825 asc->r_ctrl0 = R_CTRL0;
1826 asc->r_timings = R_TIMINGS;
1827 asc->nregs_timings = 2;
1828 asc->conf_enable_w0 = CONF_ENABLE_W0;
1829 asc->cs_num_max = 2;
1830 asc->segments = aspeed_1030_spi2_segments;
1831 asc->segment_addr_mask = 0x0ff00ff0;
1832 asc->flash_window_base = 0xb0000000;
1833 asc->flash_window_size = 0x10000000;
1834 asc->features = ASPEED_SMC_FEATURE_DMA;
1835 asc->dma_flash_mask = 0x0FFFFFFC;
1836 asc->dma_dram_mask = 0x000BFFFC;
1837 asc->nregs = ASPEED_SMC_R_MAX;
1838 asc->segment_to_reg = aspeed_2600_smc_segment_to_reg;
1839 asc->reg_to_segment = aspeed_2600_smc_reg_to_segment;
1840 asc->dma_ctrl = aspeed_2600_smc_dma_ctrl;
1841 }
1842
1843 static const TypeInfo aspeed_1030_spi2_info = {
1844 .name = "aspeed.spi2-ast1030",
1845 .parent = TYPE_ASPEED_SMC,
1846 .class_init = aspeed_1030_spi2_class_init,
1847 };
1848
1849 static void aspeed_smc_register_types(void)
1850 {
1851 type_register_static(&aspeed_smc_flash_info);
1852 type_register_static(&aspeed_smc_info);
1853 type_register_static(&aspeed_2400_smc_info);
1854 type_register_static(&aspeed_2400_fmc_info);
1855 type_register_static(&aspeed_2400_spi1_info);
1856 type_register_static(&aspeed_2500_fmc_info);
1857 type_register_static(&aspeed_2500_spi1_info);
1858 type_register_static(&aspeed_2500_spi2_info);
1859 type_register_static(&aspeed_2600_fmc_info);
1860 type_register_static(&aspeed_2600_spi1_info);
1861 type_register_static(&aspeed_2600_spi2_info);
1862 type_register_static(&aspeed_1030_fmc_info);
1863 type_register_static(&aspeed_1030_spi1_info);
1864 type_register_static(&aspeed_1030_spi2_info);
1865 }
1866
1867 type_init(aspeed_smc_register_types)
armbru's QEMU hackery