2 * ASPEED AST2400 SMC Controller (SPI Flash Only)
4 * Copyright (C) 2016 IBM Corp.
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
25 #include "qemu/osdep.h"
26 #include "hw/sysbus.h"
27 #include "migration/vmstate.h"
29 #include "qemu/module.h"
30 #include "qemu/error-report.h"
31 #include "qapi/error.h"
32 #include "exec/address-spaces.h"
33 #include "qemu/units.h"
37 #include "hw/qdev-properties.h"
38 #include "hw/ssi/aspeed_smc.h"
40 /* CE Type Setting Register */
41 #define R_CONF (0x00 / 4)
42 #define CONF_LEGACY_DISABLE (1 << 31)
43 #define CONF_ENABLE_W4 20
44 #define CONF_ENABLE_W3 19
45 #define CONF_ENABLE_W2 18
46 #define CONF_ENABLE_W1 17
47 #define CONF_ENABLE_W0 16
48 #define CONF_FLASH_TYPE4 8
49 #define CONF_FLASH_TYPE3 6
50 #define CONF_FLASH_TYPE2 4
51 #define CONF_FLASH_TYPE1 2
52 #define CONF_FLASH_TYPE0 0
53 #define CONF_FLASH_TYPE_NOR 0x0
54 #define CONF_FLASH_TYPE_NAND 0x1
55 #define CONF_FLASH_TYPE_SPI 0x2 /* AST2600 is SPI only */
57 /* CE Control Register */
58 #define R_CE_CTRL (0x04 / 4)
59 #define CTRL_EXTENDED4 4 /* 32 bit addressing for SPI */
60 #define CTRL_EXTENDED3 3 /* 32 bit addressing for SPI */
61 #define CTRL_EXTENDED2 2 /* 32 bit addressing for SPI */
62 #define CTRL_EXTENDED1 1 /* 32 bit addressing for SPI */
63 #define CTRL_EXTENDED0 0 /* 32 bit addressing for SPI */
65 /* Interrupt Control and Status Register */
66 #define R_INTR_CTRL (0x08 / 4)
67 #define INTR_CTRL_DMA_STATUS (1 << 11)
68 #define INTR_CTRL_CMD_ABORT_STATUS (1 << 10)
69 #define INTR_CTRL_WRITE_PROTECT_STATUS (1 << 9)
70 #define INTR_CTRL_DMA_EN (1 << 3)
71 #define INTR_CTRL_CMD_ABORT_EN (1 << 2)
72 #define INTR_CTRL_WRITE_PROTECT_EN (1 << 1)
74 /* CEx Control Register */
75 #define R_CTRL0 (0x10 / 4)
76 #define CTRL_IO_QPI (1 << 31)
77 #define CTRL_IO_QUAD_DATA (1 << 30)
78 #define CTRL_IO_DUAL_DATA (1 << 29)
79 #define CTRL_IO_DUAL_ADDR_DATA (1 << 28) /* Includes dummies */
80 #define CTRL_IO_QUAD_ADDR_DATA (1 << 28) /* Includes dummies */
81 #define CTRL_CMD_SHIFT 16
82 #define CTRL_CMD_MASK 0xff
83 #define CTRL_DUMMY_HIGH_SHIFT 14
84 #define CTRL_AST2400_SPI_4BYTE (1 << 13)
85 #define CE_CTRL_CLOCK_FREQ_SHIFT 8
86 #define CE_CTRL_CLOCK_FREQ_MASK 0xf
87 #define CE_CTRL_CLOCK_FREQ(div) \
88 (((div) & CE_CTRL_CLOCK_FREQ_MASK) << CE_CTRL_CLOCK_FREQ_SHIFT)
89 #define CTRL_DUMMY_LOW_SHIFT 6 /* 2 bits [7:6] */
90 #define CTRL_CE_STOP_ACTIVE (1 << 2)
91 #define CTRL_CMD_MODE_MASK 0x3
92 #define CTRL_READMODE 0x0
93 #define CTRL_FREADMODE 0x1
94 #define CTRL_WRITEMODE 0x2
95 #define CTRL_USERMODE 0x3
96 #define R_CTRL1 (0x14 / 4)
97 #define R_CTRL2 (0x18 / 4)
98 #define R_CTRL3 (0x1C / 4)
99 #define R_CTRL4 (0x20 / 4)
101 /* CEx Segment Address Register */
102 #define R_SEG_ADDR0 (0x30 / 4)
103 #define SEG_END_SHIFT 24 /* 8MB units */
104 #define SEG_END_MASK 0xff
105 #define SEG_START_SHIFT 16 /* address bit [A29-A23] */
106 #define SEG_START_MASK 0xff
107 #define R_SEG_ADDR1 (0x34 / 4)
108 #define R_SEG_ADDR2 (0x38 / 4)
109 #define R_SEG_ADDR3 (0x3C / 4)
110 #define R_SEG_ADDR4 (0x40 / 4)
112 /* Misc Control Register #1 */
113 #define R_MISC_CTRL1 (0x50 / 4)
115 /* SPI dummy cycle data */
116 #define R_DUMMY_DATA (0x54 / 4)
118 /* DMA Control/Status Register */
119 #define R_DMA_CTRL (0x80 / 4)
120 #define DMA_CTRL_DELAY_MASK 0xf
121 #define DMA_CTRL_DELAY_SHIFT 8
122 #define DMA_CTRL_FREQ_MASK 0xf
123 #define DMA_CTRL_FREQ_SHIFT 4
124 #define DMA_CTRL_CALIB (1 << 3)
125 #define DMA_CTRL_CKSUM (1 << 2)
126 #define DMA_CTRL_WRITE (1 << 1)
127 #define DMA_CTRL_ENABLE (1 << 0)
129 /* DMA Flash Side Address */
130 #define R_DMA_FLASH_ADDR (0x84 / 4)
132 /* DMA DRAM Side Address */
133 #define R_DMA_DRAM_ADDR (0x88 / 4)
135 /* DMA Length Register */
136 #define R_DMA_LEN (0x8C / 4)
138 /* Checksum Calculation Result */
139 #define R_DMA_CHECKSUM (0x90 / 4)
141 /* Read Timing Compensation Register */
142 #define R_TIMINGS (0x94 / 4)
144 /* SPI controller registers and bits (AST2400) */
145 #define R_SPI_CONF (0x00 / 4)
146 #define SPI_CONF_ENABLE_W0 0
147 #define R_SPI_CTRL0 (0x4 / 4)
148 #define R_SPI_MISC_CTRL (0x10 / 4)
149 #define R_SPI_TIMINGS (0x14 / 4)
151 #define ASPEED_SMC_R_SPI_MAX (0x20 / 4)
152 #define ASPEED_SMC_R_SMC_MAX (0x20 / 4)
154 #define ASPEED_SOC_SMC_FLASH_BASE 0x10000000
155 #define ASPEED_SOC_FMC_FLASH_BASE 0x20000000
156 #define ASPEED_SOC_SPI_FLASH_BASE 0x30000000
157 #define ASPEED_SOC_SPI2_FLASH_BASE 0x38000000
160 * DMA DRAM addresses should be 4 bytes aligned and the valid address
161 * range is 0x40000000 - 0x5FFFFFFF (AST2400)
162 * 0x80000000 - 0xBFFFFFFF (AST2500)
164 * DMA flash addresses should be 4 bytes aligned and the valid address
165 * range is 0x20000000 - 0x2FFFFFFF.
167 * DMA length is from 4 bytes to 32MB
169 * 0x7FFFFF: 32M bytes
171 #define DMA_DRAM_ADDR(s, val) ((s)->sdram_base | \
172 ((val) & (s)->ctrl->dma_dram_mask))
173 #define DMA_FLASH_ADDR(s, val) ((s)->ctrl->flash_window_base | \
174 ((val) & (s)->ctrl->dma_flash_mask))
175 #define DMA_LENGTH(val) ((val) & 0x01FFFFFC)
178 #define SPI_OP_READ 0x03 /* Read data bytes (low frequency) */
180 #define SNOOP_OFF 0xFF
181 #define SNOOP_START 0x0
184 * Default segments mapping addresses and size for each slave per
185 * controller. These can be changed when board is initialized with the
186 * Segment Address Registers.
188 static const AspeedSegments aspeed_segments_legacy[] = {
189 { 0x10000000, 32 * 1024 * 1024 },
192 static const AspeedSegments aspeed_segments_fmc[] = {
193 { 0x20000000, 64 * 1024 * 1024 }, /* start address is readonly */
194 { 0x24000000, 32 * 1024 * 1024 },
195 { 0x26000000, 32 * 1024 * 1024 },
196 { 0x28000000, 32 * 1024 * 1024 },
197 { 0x2A000000, 32 * 1024 * 1024 }
200 static const AspeedSegments aspeed_segments_spi[] = {
201 { 0x30000000, 64 * 1024 * 1024 },
204 static const AspeedSegments aspeed_segments_ast2500_fmc[] = {
205 { 0x20000000, 128 * 1024 * 1024 }, /* start address is readonly */
206 { 0x28000000, 32 * 1024 * 1024 },
207 { 0x2A000000, 32 * 1024 * 1024 },
210 static const AspeedSegments aspeed_segments_ast2500_spi1[] = {
211 { 0x30000000, 32 * 1024 * 1024 }, /* start address is readonly */
212 { 0x32000000, 96 * 1024 * 1024 }, /* end address is readonly */
215 static const AspeedSegments aspeed_segments_ast2500_spi2[] = {
216 { 0x38000000, 32 * 1024 * 1024 }, /* start address is readonly */
217 { 0x3A000000, 96 * 1024 * 1024 }, /* end address is readonly */
219 static uint32_t aspeed_smc_segment_to_reg(const AspeedSMCState *s,
220 const AspeedSegments *seg);
221 static void aspeed_smc_reg_to_segment(const AspeedSMCState *s, uint32_t reg,
222 AspeedSegments *seg);
225 * AST2600 definitions
227 #define ASPEED26_SOC_FMC_FLASH_BASE 0x20000000
228 #define ASPEED26_SOC_SPI_FLASH_BASE 0x30000000
229 #define ASPEED26_SOC_SPI2_FLASH_BASE 0x50000000
231 static const AspeedSegments aspeed_segments_ast2600_fmc[] = {
232 { 0x0, 128 * MiB }, /* start address is readonly */
233 { 128 * MiB, 128 * MiB }, /* default is disabled but needed for -kernel */
234 { 0x0, 0 }, /* disabled */
237 static const AspeedSegments aspeed_segments_ast2600_spi1[] = {
238 { 0x0, 128 * MiB }, /* start address is readonly */
239 { 0x0, 0 }, /* disabled */
242 static const AspeedSegments aspeed_segments_ast2600_spi2[] = {
243 { 0x0, 128 * MiB }, /* start address is readonly */
244 { 0x0, 0 }, /* disabled */
245 { 0x0, 0 }, /* disabled */
248 static uint32_t aspeed_2600_smc_segment_to_reg(const AspeedSMCState *s,
249 const AspeedSegments *seg);
250 static void aspeed_2600_smc_reg_to_segment(const AspeedSMCState *s,
251 uint32_t reg, AspeedSegments *seg);
253 static const AspeedSMCController controllers[] = {
255 .name = "aspeed.smc-ast2400",
257 .r_ce_ctrl = R_CE_CTRL,
259 .r_timings = R_TIMINGS,
261 .conf_enable_w0 = CONF_ENABLE_W0,
263 .segments = aspeed_segments_legacy,
264 .flash_window_base = ASPEED_SOC_SMC_FLASH_BASE,
265 .flash_window_size = 0x6000000,
267 .nregs = ASPEED_SMC_R_SMC_MAX,
268 .segment_to_reg = aspeed_smc_segment_to_reg,
269 .reg_to_segment = aspeed_smc_reg_to_segment,
271 .name = "aspeed.fmc-ast2400",
273 .r_ce_ctrl = R_CE_CTRL,
275 .r_timings = R_TIMINGS,
277 .conf_enable_w0 = CONF_ENABLE_W0,
279 .segments = aspeed_segments_fmc,
280 .flash_window_base = ASPEED_SOC_FMC_FLASH_BASE,
281 .flash_window_size = 0x10000000,
283 .dma_flash_mask = 0x0FFFFFFC,
284 .dma_dram_mask = 0x1FFFFFFC,
285 .nregs = ASPEED_SMC_R_MAX,
286 .segment_to_reg = aspeed_smc_segment_to_reg,
287 .reg_to_segment = aspeed_smc_reg_to_segment,
289 .name = "aspeed.spi1-ast2400",
290 .r_conf = R_SPI_CONF,
292 .r_ctrl0 = R_SPI_CTRL0,
293 .r_timings = R_SPI_TIMINGS,
295 .conf_enable_w0 = SPI_CONF_ENABLE_W0,
297 .segments = aspeed_segments_spi,
298 .flash_window_base = ASPEED_SOC_SPI_FLASH_BASE,
299 .flash_window_size = 0x10000000,
301 .nregs = ASPEED_SMC_R_SPI_MAX,
302 .segment_to_reg = aspeed_smc_segment_to_reg,
303 .reg_to_segment = aspeed_smc_reg_to_segment,
305 .name = "aspeed.fmc-ast2500",
307 .r_ce_ctrl = R_CE_CTRL,
309 .r_timings = R_TIMINGS,
311 .conf_enable_w0 = CONF_ENABLE_W0,
313 .segments = aspeed_segments_ast2500_fmc,
314 .flash_window_base = ASPEED_SOC_FMC_FLASH_BASE,
315 .flash_window_size = 0x10000000,
317 .dma_flash_mask = 0x0FFFFFFC,
318 .dma_dram_mask = 0x3FFFFFFC,
319 .nregs = ASPEED_SMC_R_MAX,
320 .segment_to_reg = aspeed_smc_segment_to_reg,
321 .reg_to_segment = aspeed_smc_reg_to_segment,
323 .name = "aspeed.spi1-ast2500",
325 .r_ce_ctrl = R_CE_CTRL,
327 .r_timings = R_TIMINGS,
329 .conf_enable_w0 = CONF_ENABLE_W0,
331 .segments = aspeed_segments_ast2500_spi1,
332 .flash_window_base = ASPEED_SOC_SPI_FLASH_BASE,
333 .flash_window_size = 0x8000000,
335 .nregs = ASPEED_SMC_R_MAX,
336 .segment_to_reg = aspeed_smc_segment_to_reg,
337 .reg_to_segment = aspeed_smc_reg_to_segment,
339 .name = "aspeed.spi2-ast2500",
341 .r_ce_ctrl = R_CE_CTRL,
343 .r_timings = R_TIMINGS,
345 .conf_enable_w0 = CONF_ENABLE_W0,
347 .segments = aspeed_segments_ast2500_spi2,
348 .flash_window_base = ASPEED_SOC_SPI2_FLASH_BASE,
349 .flash_window_size = 0x8000000,
351 .nregs = ASPEED_SMC_R_MAX,
352 .segment_to_reg = aspeed_smc_segment_to_reg,
353 .reg_to_segment = aspeed_smc_reg_to_segment,
355 .name = "aspeed.fmc-ast2600",
357 .r_ce_ctrl = R_CE_CTRL,
359 .r_timings = R_TIMINGS,
361 .conf_enable_w0 = CONF_ENABLE_W0,
363 .segments = aspeed_segments_ast2600_fmc,
364 .flash_window_base = ASPEED26_SOC_FMC_FLASH_BASE,
365 .flash_window_size = 0x10000000,
367 .dma_flash_mask = 0x0FFFFFFC,
368 .dma_dram_mask = 0x3FFFFFFC,
369 .nregs = ASPEED_SMC_R_MAX,
370 .segment_to_reg = aspeed_2600_smc_segment_to_reg,
371 .reg_to_segment = aspeed_2600_smc_reg_to_segment,
373 .name = "aspeed.spi1-ast2600",
375 .r_ce_ctrl = R_CE_CTRL,
377 .r_timings = R_TIMINGS,
379 .conf_enable_w0 = CONF_ENABLE_W0,
381 .segments = aspeed_segments_ast2600_spi1,
382 .flash_window_base = ASPEED26_SOC_SPI_FLASH_BASE,
383 .flash_window_size = 0x10000000,
385 .dma_flash_mask = 0x0FFFFFFC,
386 .dma_dram_mask = 0x3FFFFFFC,
387 .nregs = ASPEED_SMC_R_MAX,
388 .segment_to_reg = aspeed_2600_smc_segment_to_reg,
389 .reg_to_segment = aspeed_2600_smc_reg_to_segment,
391 .name = "aspeed.spi2-ast2600",
393 .r_ce_ctrl = R_CE_CTRL,
395 .r_timings = R_TIMINGS,
397 .conf_enable_w0 = CONF_ENABLE_W0,
399 .segments = aspeed_segments_ast2600_spi2,
400 .flash_window_base = ASPEED26_SOC_SPI2_FLASH_BASE,
401 .flash_window_size = 0x10000000,
403 .dma_flash_mask = 0x0FFFFFFC,
404 .dma_dram_mask = 0x3FFFFFFC,
405 .nregs = ASPEED_SMC_R_MAX,
406 .segment_to_reg = aspeed_2600_smc_segment_to_reg,
407 .reg_to_segment = aspeed_2600_smc_reg_to_segment,
412 * The Segment Registers of the AST2400 and AST2500 have a 8MB
413 * unit. The address range of a flash SPI slave is encoded with
414 * absolute addresses which should be part of the overall controller
417 static uint32_t aspeed_smc_segment_to_reg(const AspeedSMCState *s,
418 const AspeedSegments *seg)
421 reg |= ((seg->addr >> 23) & SEG_START_MASK) << SEG_START_SHIFT;
422 reg |= (((seg->addr + seg->size) >> 23) & SEG_END_MASK) << SEG_END_SHIFT;
426 static void aspeed_smc_reg_to_segment(const AspeedSMCState *s,
427 uint32_t reg, AspeedSegments *seg)
429 seg->addr = ((reg >> SEG_START_SHIFT) & SEG_START_MASK) << 23;
430 seg->size = (((reg >> SEG_END_SHIFT) & SEG_END_MASK) << 23) - seg->addr;
434 * The Segment Registers of the AST2600 have a 1MB unit. The address
435 * range of a flash SPI slave is encoded with offsets in the overall
436 * controller window. The previous SoC AST2400 and AST2500 used
437 * absolute addresses. Only bits [27:20] are relevant and the end
438 * address is an upper bound limit.
440 #define AST2600_SEG_ADDR_MASK 0x0ff00000
442 static uint32_t aspeed_2600_smc_segment_to_reg(const AspeedSMCState *s,
443 const AspeedSegments *seg)
447 /* Disabled segments have a nil register */
452 reg |= (seg->addr & AST2600_SEG_ADDR_MASK) >> 16; /* start offset */
453 reg |= (seg->addr + seg->size - 1) & AST2600_SEG_ADDR_MASK; /* end offset */
457 static void aspeed_2600_smc_reg_to_segment(const AspeedSMCState *s,
458 uint32_t reg, AspeedSegments *seg)
460 uint32_t start_offset = (reg << 16) & AST2600_SEG_ADDR_MASK;
461 uint32_t end_offset = reg & AST2600_SEG_ADDR_MASK;
464 seg->addr = s->ctrl->flash_window_base + start_offset;
465 seg->size = end_offset + MiB - start_offset;
467 seg->addr = s->ctrl->flash_window_base;
472 static bool aspeed_smc_flash_overlap(const AspeedSMCState *s,
473 const AspeedSegments *new,
479 for (i = 0; i < s->ctrl->max_slaves; i++) {
484 s->ctrl->reg_to_segment(s, s->regs[R_SEG_ADDR0 + i], &seg);
486 if (new->addr + new->size > seg.addr &&
487 new->addr < seg.addr + seg.size) {
488 qemu_log_mask(LOG_GUEST_ERROR, "%s: new segment CS%d [ 0x%"
489 HWADDR_PRIx" - 0x%"HWADDR_PRIx" ] overlaps with "
490 "CS%d [ 0x%"HWADDR_PRIx" - 0x%"HWADDR_PRIx" ]\n",
491 s->ctrl->name, cs, new->addr, new->addr + new->size,
492 i, seg.addr, seg.addr + seg.size);
499 static void aspeed_smc_flash_set_segment_region(AspeedSMCState *s, int cs,
502 AspeedSMCFlash *fl = &s->flashes[cs];
505 s->ctrl->reg_to_segment(s, regval, &seg);
507 memory_region_transaction_begin();
508 memory_region_set_size(&fl->mmio, seg.size);
509 memory_region_set_address(&fl->mmio, seg.addr - s->ctrl->flash_window_base);
510 memory_region_set_enabled(&fl->mmio, !!seg.size);
511 memory_region_transaction_commit();
513 s->regs[R_SEG_ADDR0 + cs] = regval;
516 static void aspeed_smc_flash_set_segment(AspeedSMCState *s, int cs,
521 s->ctrl->reg_to_segment(s, new, &seg);
523 trace_aspeed_smc_flash_set_segment(cs, new, seg.addr, seg.addr + seg.size);
525 /* The start address of CS0 is read-only */
526 if (cs == 0 && seg.addr != s->ctrl->flash_window_base) {
527 qemu_log_mask(LOG_GUEST_ERROR,
528 "%s: Tried to change CS0 start address to 0x%"
529 HWADDR_PRIx "\n", s->ctrl->name, seg.addr);
530 seg.addr = s->ctrl->flash_window_base;
531 new = s->ctrl->segment_to_reg(s, &seg);
535 * The end address of the AST2500 spi controllers is also
538 if ((s->ctrl->segments == aspeed_segments_ast2500_spi1 ||
539 s->ctrl->segments == aspeed_segments_ast2500_spi2) &&
540 cs == s->ctrl->max_slaves &&
541 seg.addr + seg.size != s->ctrl->segments[cs].addr +
542 s->ctrl->segments[cs].size) {
543 qemu_log_mask(LOG_GUEST_ERROR,
544 "%s: Tried to change CS%d end address to 0x%"
545 HWADDR_PRIx "\n", s->ctrl->name, cs, seg.addr + seg.size);
546 seg.size = s->ctrl->segments[cs].addr + s->ctrl->segments[cs].size -
548 new = s->ctrl->segment_to_reg(s, &seg);
551 /* Keep the segment in the overall flash window */
553 (seg.addr + seg.size <= s->ctrl->flash_window_base ||
554 seg.addr > s->ctrl->flash_window_base + s->ctrl->flash_window_size)) {
555 qemu_log_mask(LOG_GUEST_ERROR, "%s: new segment for CS%d is invalid : "
556 "[ 0x%"HWADDR_PRIx" - 0x%"HWADDR_PRIx" ]\n",
557 s->ctrl->name, cs, seg.addr, seg.addr + seg.size);
561 /* Check start address vs. alignment */
562 if (seg.size && !QEMU_IS_ALIGNED(seg.addr, seg.size)) {
563 qemu_log_mask(LOG_GUEST_ERROR, "%s: new segment for CS%d is not "
564 "aligned : [ 0x%"HWADDR_PRIx" - 0x%"HWADDR_PRIx" ]\n",
565 s->ctrl->name, cs, seg.addr, seg.addr + seg.size);
568 /* And segments should not overlap (in the specs) */
569 aspeed_smc_flash_overlap(s, &seg, cs);
571 /* All should be fine now to move the region */
572 aspeed_smc_flash_set_segment_region(s, cs, new);
575 static uint64_t aspeed_smc_flash_default_read(void *opaque, hwaddr addr,
578 qemu_log_mask(LOG_GUEST_ERROR, "%s: To 0x%" HWADDR_PRIx " of size %u"
579 PRIx64 "\n", __func__, addr, size);
583 static void aspeed_smc_flash_default_write(void *opaque, hwaddr addr,
584 uint64_t data, unsigned size)
586 qemu_log_mask(LOG_GUEST_ERROR, "%s: To 0x%" HWADDR_PRIx " of size %u: 0x%"
587 PRIx64 "\n", __func__, addr, size, data);
590 static const MemoryRegionOps aspeed_smc_flash_default_ops = {
591 .read = aspeed_smc_flash_default_read,
592 .write = aspeed_smc_flash_default_write,
593 .endianness = DEVICE_LITTLE_ENDIAN,
595 .min_access_size = 1,
596 .max_access_size = 4,
600 static inline int aspeed_smc_flash_mode(const AspeedSMCFlash *fl)
602 const AspeedSMCState *s = fl->controller;
604 return s->regs[s->r_ctrl0 + fl->id] & CTRL_CMD_MODE_MASK;
607 static inline bool aspeed_smc_is_writable(const AspeedSMCFlash *fl)
609 const AspeedSMCState *s = fl->controller;
611 return s->regs[s->r_conf] & (1 << (s->conf_enable_w0 + fl->id));
614 static inline int aspeed_smc_flash_cmd(const AspeedSMCFlash *fl)
616 const AspeedSMCState *s = fl->controller;
617 int cmd = (s->regs[s->r_ctrl0 + fl->id] >> CTRL_CMD_SHIFT) & CTRL_CMD_MASK;
620 * In read mode, the default SPI command is READ (0x3). In other
621 * modes, the command should necessarily be defined
623 * TODO: add support for READ4 (0x13) on AST2600
625 if (aspeed_smc_flash_mode(fl) == CTRL_READMODE) {
630 qemu_log_mask(LOG_GUEST_ERROR, "%s: no command defined for mode %d\n",
631 __func__, aspeed_smc_flash_mode(fl));
637 static inline int aspeed_smc_flash_is_4byte(const AspeedSMCFlash *fl)
639 const AspeedSMCState *s = fl->controller;
641 if (s->ctrl->segments == aspeed_segments_spi) {
642 return s->regs[s->r_ctrl0] & CTRL_AST2400_SPI_4BYTE;
644 return s->regs[s->r_ce_ctrl] & (1 << (CTRL_EXTENDED0 + fl->id));
648 static void aspeed_smc_flash_do_select(AspeedSMCFlash *fl, bool unselect)
650 AspeedSMCState *s = fl->controller;
652 trace_aspeed_smc_flash_select(fl->id, unselect ? "un" : "");
654 qemu_set_irq(s->cs_lines[fl->id], unselect);
657 static void aspeed_smc_flash_select(AspeedSMCFlash *fl)
659 aspeed_smc_flash_do_select(fl, false);
662 static void aspeed_smc_flash_unselect(AspeedSMCFlash *fl)
664 aspeed_smc_flash_do_select(fl, true);
667 static uint32_t aspeed_smc_check_segment_addr(const AspeedSMCFlash *fl,
670 const AspeedSMCState *s = fl->controller;
673 s->ctrl->reg_to_segment(s, s->regs[R_SEG_ADDR0 + fl->id], &seg);
674 if ((addr % seg.size) != addr) {
675 qemu_log_mask(LOG_GUEST_ERROR,
676 "%s: invalid address 0x%08x for CS%d segment : "
677 "[ 0x%"HWADDR_PRIx" - 0x%"HWADDR_PRIx" ]\n",
678 s->ctrl->name, addr, fl->id, seg.addr,
679 seg.addr + seg.size);
686 static int aspeed_smc_flash_dummies(const AspeedSMCFlash *fl)
688 const AspeedSMCState *s = fl->controller;
689 uint32_t r_ctrl0 = s->regs[s->r_ctrl0 + fl->id];
690 uint32_t dummy_high = (r_ctrl0 >> CTRL_DUMMY_HIGH_SHIFT) & 0x1;
691 uint32_t dummy_low = (r_ctrl0 >> CTRL_DUMMY_LOW_SHIFT) & 0x3;
692 uint32_t dummies = ((dummy_high << 2) | dummy_low) * 8;
694 if (r_ctrl0 & CTRL_IO_DUAL_ADDR_DATA) {
701 static void aspeed_smc_flash_setup(AspeedSMCFlash *fl, uint32_t addr)
703 const AspeedSMCState *s = fl->controller;
704 uint8_t cmd = aspeed_smc_flash_cmd(fl);
707 /* Flash access can not exceed CS segment */
708 addr = aspeed_smc_check_segment_addr(fl, addr);
710 ssi_transfer(s->spi, cmd);
712 if (aspeed_smc_flash_is_4byte(fl)) {
713 ssi_transfer(s->spi, (addr >> 24) & 0xff);
715 ssi_transfer(s->spi, (addr >> 16) & 0xff);
716 ssi_transfer(s->spi, (addr >> 8) & 0xff);
717 ssi_transfer(s->spi, (addr & 0xff));
720 * Use fake transfers to model dummy bytes. The value should
721 * be configured to some non-zero value in fast read mode and
722 * zero in read mode. But, as the HW allows inconsistent
723 * settings, let's check for fast read mode.
725 if (aspeed_smc_flash_mode(fl) == CTRL_FREADMODE) {
726 for (i = 0; i < aspeed_smc_flash_dummies(fl); i++) {
727 ssi_transfer(fl->controller->spi, s->regs[R_DUMMY_DATA] & 0xff);
732 static uint64_t aspeed_smc_flash_read(void *opaque, hwaddr addr, unsigned size)
734 AspeedSMCFlash *fl = opaque;
735 AspeedSMCState *s = fl->controller;
739 switch (aspeed_smc_flash_mode(fl)) {
741 for (i = 0; i < size; i++) {
742 ret |= ssi_transfer(s->spi, 0x0) << (8 * i);
747 aspeed_smc_flash_select(fl);
748 aspeed_smc_flash_setup(fl, addr);
750 for (i = 0; i < size; i++) {
751 ret |= ssi_transfer(s->spi, 0x0) << (8 * i);
754 aspeed_smc_flash_unselect(fl);
757 qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid flash mode %d\n",
758 __func__, aspeed_smc_flash_mode(fl));
761 trace_aspeed_smc_flash_read(fl->id, addr, size, ret,
762 aspeed_smc_flash_mode(fl));
768 * common include header.
771 READ = 0x3, READ_4 = 0x13,
772 FAST_READ = 0xb, FAST_READ_4 = 0x0c,
773 DOR = 0x3b, DOR_4 = 0x3c,
774 QOR = 0x6b, QOR_4 = 0x6c,
775 DIOR = 0xbb, DIOR_4 = 0xbc,
776 QIOR = 0xeb, QIOR_4 = 0xec,
778 PP = 0x2, PP_4 = 0x12,
780 QPP = 0x32, QPP_4 = 0x34,
783 static int aspeed_smc_num_dummies(uint8_t command)
785 switch (command) { /* check for dummies */
786 case READ: /* no dummy bytes/cycles */
812 static bool aspeed_smc_do_snoop(AspeedSMCFlash *fl, uint64_t data,
815 AspeedSMCState *s = fl->controller;
816 uint8_t addr_width = aspeed_smc_flash_is_4byte(fl) ? 4 : 3;
818 trace_aspeed_smc_do_snoop(fl->id, s->snoop_index, s->snoop_dummies,
819 (uint8_t) data & 0xff);
821 if (s->snoop_index == SNOOP_OFF) {
822 return false; /* Do nothing */
824 } else if (s->snoop_index == SNOOP_START) {
825 uint8_t cmd = data & 0xff;
826 int ndummies = aspeed_smc_num_dummies(cmd);
829 * No dummy cycles are expected with the current command. Turn
830 * off snooping and let the transfer proceed normally.
833 s->snoop_index = SNOOP_OFF;
837 s->snoop_dummies = ndummies * 8;
839 } else if (s->snoop_index >= addr_width + 1) {
841 /* The SPI transfer has reached the dummy cycles sequence */
842 for (; s->snoop_dummies; s->snoop_dummies--) {
843 ssi_transfer(s->spi, s->regs[R_DUMMY_DATA] & 0xff);
846 /* If no more dummy cycles are expected, turn off snooping */
847 if (!s->snoop_dummies) {
848 s->snoop_index = SNOOP_OFF;
850 s->snoop_index += size;
854 * Dummy cycles have been faked already. Ignore the current
860 s->snoop_index += size;
864 static void aspeed_smc_flash_write(void *opaque, hwaddr addr, uint64_t data,
867 AspeedSMCFlash *fl = opaque;
868 AspeedSMCState *s = fl->controller;
871 trace_aspeed_smc_flash_write(fl->id, addr, size, data,
872 aspeed_smc_flash_mode(fl));
874 if (!aspeed_smc_is_writable(fl)) {
875 qemu_log_mask(LOG_GUEST_ERROR, "%s: flash is not writable at 0x%"
876 HWADDR_PRIx "\n", __func__, addr);
880 switch (aspeed_smc_flash_mode(fl)) {
882 if (aspeed_smc_do_snoop(fl, data, size)) {
886 for (i = 0; i < size; i++) {
887 ssi_transfer(s->spi, (data >> (8 * i)) & 0xff);
891 aspeed_smc_flash_select(fl);
892 aspeed_smc_flash_setup(fl, addr);
894 for (i = 0; i < size; i++) {
895 ssi_transfer(s->spi, (data >> (8 * i)) & 0xff);
898 aspeed_smc_flash_unselect(fl);
901 qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid flash mode %d\n",
902 __func__, aspeed_smc_flash_mode(fl));
906 static const MemoryRegionOps aspeed_smc_flash_ops = {
907 .read = aspeed_smc_flash_read,
908 .write = aspeed_smc_flash_write,
909 .endianness = DEVICE_LITTLE_ENDIAN,
911 .min_access_size = 1,
912 .max_access_size = 4,
916 static void aspeed_smc_flash_update_ctrl(AspeedSMCFlash *fl, uint32_t value)
918 AspeedSMCState *s = fl->controller;
921 /* User mode selects the CS, other modes unselect */
922 unselect = (value & CTRL_CMD_MODE_MASK) != CTRL_USERMODE;
924 /* A change of CTRL_CE_STOP_ACTIVE from 0 to 1, unselects the CS */
925 if (!(s->regs[s->r_ctrl0 + fl->id] & CTRL_CE_STOP_ACTIVE) &&
926 value & CTRL_CE_STOP_ACTIVE) {
930 s->regs[s->r_ctrl0 + fl->id] = value;
932 s->snoop_index = unselect ? SNOOP_OFF : SNOOP_START;
934 aspeed_smc_flash_do_select(fl, unselect);
937 static void aspeed_smc_reset(DeviceState *d)
939 AspeedSMCState *s = ASPEED_SMC(d);
942 memset(s->regs, 0, sizeof s->regs);
944 /* Unselect all slaves */
945 for (i = 0; i < s->num_cs; ++i) {
946 s->regs[s->r_ctrl0 + i] |= CTRL_CE_STOP_ACTIVE;
947 qemu_set_irq(s->cs_lines[i], true);
950 /* setup the default segment register values and regions for all */
951 for (i = 0; i < s->ctrl->max_slaves; ++i) {
952 aspeed_smc_flash_set_segment_region(s, i,
953 s->ctrl->segment_to_reg(s, &s->ctrl->segments[i]));
956 /* HW strapping flash type for the AST2600 controllers */
957 if (s->ctrl->segments == aspeed_segments_ast2600_fmc) {
958 /* flash type is fixed to SPI for all */
959 s->regs[s->r_conf] |= (CONF_FLASH_TYPE_SPI << CONF_FLASH_TYPE0);
960 s->regs[s->r_conf] |= (CONF_FLASH_TYPE_SPI << CONF_FLASH_TYPE1);
961 s->regs[s->r_conf] |= (CONF_FLASH_TYPE_SPI << CONF_FLASH_TYPE2);
964 /* HW strapping flash type for FMC controllers */
965 if (s->ctrl->segments == aspeed_segments_ast2500_fmc) {
966 /* flash type is fixed to SPI for CE0 and CE1 */
967 s->regs[s->r_conf] |= (CONF_FLASH_TYPE_SPI << CONF_FLASH_TYPE0);
968 s->regs[s->r_conf] |= (CONF_FLASH_TYPE_SPI << CONF_FLASH_TYPE1);
971 /* HW strapping for AST2400 FMC controllers (SCU70). Let's use the
972 * configuration of the palmetto-bmc machine */
973 if (s->ctrl->segments == aspeed_segments_fmc) {
974 s->regs[s->r_conf] |= (CONF_FLASH_TYPE_SPI << CONF_FLASH_TYPE0);
977 s->snoop_index = SNOOP_OFF;
978 s->snoop_dummies = 0;
981 static uint64_t aspeed_smc_read(void *opaque, hwaddr addr, unsigned int size)
983 AspeedSMCState *s = ASPEED_SMC(opaque);
987 if (addr == s->r_conf ||
988 (addr >= s->r_timings &&
989 addr < s->r_timings + s->ctrl->nregs_timings) ||
990 addr == s->r_ce_ctrl ||
991 addr == R_INTR_CTRL ||
992 addr == R_DUMMY_DATA ||
993 (s->ctrl->has_dma && addr == R_DMA_CTRL) ||
994 (s->ctrl->has_dma && addr == R_DMA_FLASH_ADDR) ||
995 (s->ctrl->has_dma && addr == R_DMA_DRAM_ADDR) ||
996 (s->ctrl->has_dma && addr == R_DMA_LEN) ||
997 (s->ctrl->has_dma && addr == R_DMA_CHECKSUM) ||
998 (addr >= R_SEG_ADDR0 && addr < R_SEG_ADDR0 + s->ctrl->max_slaves) ||
999 (addr >= s->r_ctrl0 && addr < s->r_ctrl0 + s->ctrl->max_slaves)) {
1001 trace_aspeed_smc_read(addr, size, s->regs[addr]);
1003 return s->regs[addr];
1005 qemu_log_mask(LOG_UNIMP, "%s: not implemented: 0x%" HWADDR_PRIx "\n",
1011 static uint8_t aspeed_smc_hclk_divisor(uint8_t hclk_mask)
1013 /* HCLK/1 .. HCLK/16 */
1014 const uint8_t hclk_divisors[] = {
1015 15, 7, 14, 6, 13, 5, 12, 4, 11, 3, 10, 2, 9, 1, 8, 0
1019 for (i = 0; i < ARRAY_SIZE(hclk_divisors); i++) {
1020 if (hclk_mask == hclk_divisors[i]) {
1025 qemu_log_mask(LOG_GUEST_ERROR, "invalid HCLK mask %x", hclk_mask);
1030 * When doing calibration, the SPI clock rate in the CE0 Control
1031 * Register and the read delay cycles in the Read Timing Compensation
1032 * Register are set using bit[11:4] of the DMA Control Register.
1034 static void aspeed_smc_dma_calibration(AspeedSMCState *s)
1037 (s->regs[R_DMA_CTRL] >> DMA_CTRL_DELAY_SHIFT) & DMA_CTRL_DELAY_MASK;
1039 (s->regs[R_DMA_CTRL] >> DMA_CTRL_FREQ_SHIFT) & DMA_CTRL_FREQ_MASK;
1040 uint8_t hclk_div = aspeed_smc_hclk_divisor(hclk_mask);
1041 uint32_t hclk_shift = (hclk_div - 1) << 2;
1045 * The Read Timing Compensation Register values apply to all CS on
1046 * the SPI bus and only HCLK/1 - HCLK/5 can have tunable delays
1048 if (hclk_div && hclk_div < 6) {
1049 s->regs[s->r_timings] &= ~(0xf << hclk_shift);
1050 s->regs[s->r_timings] |= delay << hclk_shift;
1054 * TODO: compute the CS from the DMA address and the segment
1055 * registers. This is not really a problem for now because the
1056 * Timing Register values apply to all CS and software uses CS0 to
1060 s->regs[s->r_ctrl0 + cs] &=
1061 ~(CE_CTRL_CLOCK_FREQ_MASK << CE_CTRL_CLOCK_FREQ_SHIFT);
1062 s->regs[s->r_ctrl0 + cs] |= CE_CTRL_CLOCK_FREQ(hclk_div);
1066 * Emulate read errors in the DMA Checksum Register for high
1067 * frequencies and optimistic settings of the Read Timing Compensation
1068 * Register. This will help in tuning the SPI timing calibration
1071 static bool aspeed_smc_inject_read_failure(AspeedSMCState *s)
1074 (s->regs[R_DMA_CTRL] >> DMA_CTRL_DELAY_SHIFT) & DMA_CTRL_DELAY_MASK;
1076 (s->regs[R_DMA_CTRL] >> DMA_CTRL_FREQ_SHIFT) & DMA_CTRL_FREQ_MASK;
1079 * Typical values of a palmetto-bmc machine.
1081 switch (aspeed_smc_hclk_divisor(hclk_mask)) {
1084 case 3: /* at least one HCLK cycle delay */
1085 return (delay & 0x7) < 1;
1086 case 2: /* at least two HCLK cycle delay */
1087 return (delay & 0x7) < 2;
1088 case 1: /* (> 100MHz) is above the max freq of the controller */
1091 g_assert_not_reached();
1096 * Accumulate the result of the reads to provide a checksum that will
1097 * be used to validate the read timing settings.
1099 static void aspeed_smc_dma_checksum(AspeedSMCState *s)
1104 if (s->regs[R_DMA_CTRL] & DMA_CTRL_WRITE) {
1105 qemu_log_mask(LOG_GUEST_ERROR,
1106 "%s: invalid direction for DMA checksum\n", __func__);
1110 if (s->regs[R_DMA_CTRL] & DMA_CTRL_CALIB) {
1111 aspeed_smc_dma_calibration(s);
1114 while (s->regs[R_DMA_LEN]) {
1115 data = address_space_ldl_le(&s->flash_as, s->regs[R_DMA_FLASH_ADDR],
1116 MEMTXATTRS_UNSPECIFIED, &result);
1117 if (result != MEMTX_OK) {
1118 qemu_log_mask(LOG_GUEST_ERROR, "%s: Flash read failed @%08x\n",
1119 __func__, s->regs[R_DMA_FLASH_ADDR]);
1122 trace_aspeed_smc_dma_checksum(s->regs[R_DMA_FLASH_ADDR], data);
1125 * When the DMA is on-going, the DMA registers are updated
1126 * with the current working addresses and length.
1128 s->regs[R_DMA_CHECKSUM] += data;
1129 s->regs[R_DMA_FLASH_ADDR] += 4;
1130 s->regs[R_DMA_LEN] -= 4;
1133 if (s->inject_failure && aspeed_smc_inject_read_failure(s)) {
1134 s->regs[R_DMA_CHECKSUM] = 0xbadc0de;
1139 static void aspeed_smc_dma_rw(AspeedSMCState *s)
1144 trace_aspeed_smc_dma_rw(s->regs[R_DMA_CTRL] & DMA_CTRL_WRITE ?
1146 s->regs[R_DMA_FLASH_ADDR],
1147 s->regs[R_DMA_DRAM_ADDR],
1148 s->regs[R_DMA_LEN]);
1149 while (s->regs[R_DMA_LEN]) {
1150 if (s->regs[R_DMA_CTRL] & DMA_CTRL_WRITE) {
1151 data = address_space_ldl_le(&s->dram_as, s->regs[R_DMA_DRAM_ADDR],
1152 MEMTXATTRS_UNSPECIFIED, &result);
1153 if (result != MEMTX_OK) {
1154 qemu_log_mask(LOG_GUEST_ERROR, "%s: DRAM read failed @%08x\n",
1155 __func__, s->regs[R_DMA_DRAM_ADDR]);
1159 address_space_stl_le(&s->flash_as, s->regs[R_DMA_FLASH_ADDR],
1160 data, MEMTXATTRS_UNSPECIFIED, &result);
1161 if (result != MEMTX_OK) {
1162 qemu_log_mask(LOG_GUEST_ERROR, "%s: Flash write failed @%08x\n",
1163 __func__, s->regs[R_DMA_FLASH_ADDR]);
1167 data = address_space_ldl_le(&s->flash_as, s->regs[R_DMA_FLASH_ADDR],
1168 MEMTXATTRS_UNSPECIFIED, &result);
1169 if (result != MEMTX_OK) {
1170 qemu_log_mask(LOG_GUEST_ERROR, "%s: Flash read failed @%08x\n",
1171 __func__, s->regs[R_DMA_FLASH_ADDR]);
1175 address_space_stl_le(&s->dram_as, s->regs[R_DMA_DRAM_ADDR],
1176 data, MEMTXATTRS_UNSPECIFIED, &result);
1177 if (result != MEMTX_OK) {
1178 qemu_log_mask(LOG_GUEST_ERROR, "%s: DRAM write failed @%08x\n",
1179 __func__, s->regs[R_DMA_DRAM_ADDR]);
1185 * When the DMA is on-going, the DMA registers are updated
1186 * with the current working addresses and length.
1188 s->regs[R_DMA_FLASH_ADDR] += 4;
1189 s->regs[R_DMA_DRAM_ADDR] += 4;
1190 s->regs[R_DMA_LEN] -= 4;
1191 s->regs[R_DMA_CHECKSUM] += data;
1195 static void aspeed_smc_dma_stop(AspeedSMCState *s)
1198 * When the DMA is disabled, INTR_CTRL_DMA_STATUS=0 means the
1201 s->regs[R_INTR_CTRL] &= ~INTR_CTRL_DMA_STATUS;
1202 s->regs[R_DMA_CHECKSUM] = 0;
1205 * Lower the DMA irq in any case. The IRQ control register could
1206 * have been cleared before disabling the DMA.
1208 qemu_irq_lower(s->irq);
1212 * When INTR_CTRL_DMA_STATUS=1, the DMA has completed and a new DMA
1213 * can start even if the result of the previous was not collected.
1215 static bool aspeed_smc_dma_in_progress(AspeedSMCState *s)
1217 return s->regs[R_DMA_CTRL] & DMA_CTRL_ENABLE &&
1218 !(s->regs[R_INTR_CTRL] & INTR_CTRL_DMA_STATUS);
1221 static void aspeed_smc_dma_done(AspeedSMCState *s)
1223 s->regs[R_INTR_CTRL] |= INTR_CTRL_DMA_STATUS;
1224 if (s->regs[R_INTR_CTRL] & INTR_CTRL_DMA_EN) {
1225 qemu_irq_raise(s->irq);
1229 static void aspeed_smc_dma_ctrl(AspeedSMCState *s, uint64_t dma_ctrl)
1231 if (!(dma_ctrl & DMA_CTRL_ENABLE)) {
1232 s->regs[R_DMA_CTRL] = dma_ctrl;
1234 aspeed_smc_dma_stop(s);
1238 if (aspeed_smc_dma_in_progress(s)) {
1239 qemu_log_mask(LOG_GUEST_ERROR, "%s: DMA in progress\n", __func__);
1243 s->regs[R_DMA_CTRL] = dma_ctrl;
1245 if (s->regs[R_DMA_CTRL] & DMA_CTRL_CKSUM) {
1246 aspeed_smc_dma_checksum(s);
1248 aspeed_smc_dma_rw(s);
1251 aspeed_smc_dma_done(s);
1254 static void aspeed_smc_write(void *opaque, hwaddr addr, uint64_t data,
1257 AspeedSMCState *s = ASPEED_SMC(opaque);
1258 uint32_t value = data;
1262 trace_aspeed_smc_write(addr, size, data);
1264 if (addr == s->r_conf ||
1265 (addr >= s->r_timings &&
1266 addr < s->r_timings + s->ctrl->nregs_timings) ||
1267 addr == s->r_ce_ctrl) {
1268 s->regs[addr] = value;
1269 } else if (addr >= s->r_ctrl0 && addr < s->r_ctrl0 + s->num_cs) {
1270 int cs = addr - s->r_ctrl0;
1271 aspeed_smc_flash_update_ctrl(&s->flashes[cs], value);
1272 } else if (addr >= R_SEG_ADDR0 &&
1273 addr < R_SEG_ADDR0 + s->ctrl->max_slaves) {
1274 int cs = addr - R_SEG_ADDR0;
1276 if (value != s->regs[R_SEG_ADDR0 + cs]) {
1277 aspeed_smc_flash_set_segment(s, cs, value);
1279 } else if (addr == R_DUMMY_DATA) {
1280 s->regs[addr] = value & 0xff;
1281 } else if (addr == R_INTR_CTRL) {
1282 s->regs[addr] = value;
1283 } else if (s->ctrl->has_dma && addr == R_DMA_CTRL) {
1284 aspeed_smc_dma_ctrl(s, value);
1285 } else if (s->ctrl->has_dma && addr == R_DMA_DRAM_ADDR) {
1286 s->regs[addr] = DMA_DRAM_ADDR(s, value);
1287 } else if (s->ctrl->has_dma && addr == R_DMA_FLASH_ADDR) {
1288 s->regs[addr] = DMA_FLASH_ADDR(s, value);
1289 } else if (s->ctrl->has_dma && addr == R_DMA_LEN) {
1290 s->regs[addr] = DMA_LENGTH(value);
1292 qemu_log_mask(LOG_UNIMP, "%s: not implemented: 0x%" HWADDR_PRIx "\n",
1298 static const MemoryRegionOps aspeed_smc_ops = {
1299 .read = aspeed_smc_read,
1300 .write = aspeed_smc_write,
1301 .endianness = DEVICE_LITTLE_ENDIAN,
1305 * Initialize the custom address spaces for DMAs
1307 static void aspeed_smc_dma_setup(AspeedSMCState *s, Error **errp)
1312 error_setg(errp, TYPE_ASPEED_SMC ": 'dram' link not set");
1316 name = g_strdup_printf("%s-dma-flash", s->ctrl->name);
1317 address_space_init(&s->flash_as, &s->mmio_flash, name);
1320 name = g_strdup_printf("%s-dma-dram", s->ctrl->name);
1321 address_space_init(&s->dram_as, s->dram_mr, name);
1325 static void aspeed_smc_realize(DeviceState *dev, Error **errp)
1327 SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
1328 AspeedSMCState *s = ASPEED_SMC(dev);
1329 AspeedSMCClass *mc = ASPEED_SMC_GET_CLASS(s);
1336 /* keep a copy under AspeedSMCState to speed up accesses */
1337 s->r_conf = s->ctrl->r_conf;
1338 s->r_ce_ctrl = s->ctrl->r_ce_ctrl;
1339 s->r_ctrl0 = s->ctrl->r_ctrl0;
1340 s->r_timings = s->ctrl->r_timings;
1341 s->conf_enable_w0 = s->ctrl->conf_enable_w0;
1343 /* Enforce some real HW limits */
1344 if (s->num_cs > s->ctrl->max_slaves) {
1345 qemu_log_mask(LOG_GUEST_ERROR, "%s: num_cs cannot exceed: %d\n",
1346 __func__, s->ctrl->max_slaves);
1347 s->num_cs = s->ctrl->max_slaves;
1350 /* DMA irq. Keep it first for the initialization in the SoC */
1351 sysbus_init_irq(sbd, &s->irq);
1353 s->spi = ssi_create_bus(dev, "spi");
1355 /* Setup cs_lines for slaves */
1356 s->cs_lines = g_new0(qemu_irq, s->num_cs);
1358 for (i = 0; i < s->num_cs; ++i) {
1359 sysbus_init_irq(sbd, &s->cs_lines[i]);
1362 /* The memory region for the controller registers */
1363 memory_region_init_io(&s->mmio, OBJECT(s), &aspeed_smc_ops, s,
1364 s->ctrl->name, s->ctrl->nregs * 4);
1365 sysbus_init_mmio(sbd, &s->mmio);
1368 * The container memory region representing the address space
1369 * window in which the flash modules are mapped. The size and
1370 * address depends on the SoC model and controller type.
1372 snprintf(name, sizeof(name), "%s.flash", s->ctrl->name);
1374 memory_region_init_io(&s->mmio_flash, OBJECT(s),
1375 &aspeed_smc_flash_default_ops, s, name,
1376 s->ctrl->flash_window_size);
1377 sysbus_init_mmio(sbd, &s->mmio_flash);
1379 s->flashes = g_new0(AspeedSMCFlash, s->ctrl->max_slaves);
1382 * Let's create a sub memory region for each possible slave. All
1383 * have a configurable memory segment in the overall flash mapping
1384 * window of the controller but, there is not necessarily a flash
1385 * module behind to handle the memory accesses. This depends on
1386 * the board configuration.
1388 for (i = 0; i < s->ctrl->max_slaves; ++i) {
1389 AspeedSMCFlash *fl = &s->flashes[i];
1391 snprintf(name, sizeof(name), "%s.%d", s->ctrl->name, i);
1395 fl->size = s->ctrl->segments[i].size;
1396 memory_region_init_io(&fl->mmio, OBJECT(s), &aspeed_smc_flash_ops,
1397 fl, name, fl->size);
1398 memory_region_add_subregion(&s->mmio_flash, offset, &fl->mmio);
1403 if (s->ctrl->has_dma) {
1404 aspeed_smc_dma_setup(s, errp);
1408 static const VMStateDescription vmstate_aspeed_smc = {
1409 .name = "aspeed.smc",
1411 .minimum_version_id = 2,
1412 .fields = (VMStateField[]) {
1413 VMSTATE_UINT32_ARRAY(regs, AspeedSMCState, ASPEED_SMC_R_MAX),
1414 VMSTATE_UINT8(snoop_index, AspeedSMCState),
1415 VMSTATE_UINT8(snoop_dummies, AspeedSMCState),
1416 VMSTATE_END_OF_LIST()
1420 static Property aspeed_smc_properties[] = {
1421 DEFINE_PROP_UINT32("num-cs", AspeedSMCState, num_cs, 1),
1422 DEFINE_PROP_BOOL("inject-failure", AspeedSMCState, inject_failure, false),
1423 DEFINE_PROP_UINT64("sdram-base", AspeedSMCState, sdram_base, 0),
1424 DEFINE_PROP_LINK("dram", AspeedSMCState, dram_mr,
1425 TYPE_MEMORY_REGION, MemoryRegion *),
1426 DEFINE_PROP_END_OF_LIST(),
1429 static void aspeed_smc_class_init(ObjectClass *klass, void *data)
1431 DeviceClass *dc = DEVICE_CLASS(klass);
1432 AspeedSMCClass *mc = ASPEED_SMC_CLASS(klass);
1434 dc->realize = aspeed_smc_realize;
1435 dc->reset = aspeed_smc_reset;
1436 device_class_set_props(dc, aspeed_smc_properties);
1437 dc->vmsd = &vmstate_aspeed_smc;
1441 static const TypeInfo aspeed_smc_info = {
1442 .name = TYPE_ASPEED_SMC,
1443 .parent = TYPE_SYS_BUS_DEVICE,
1444 .instance_size = sizeof(AspeedSMCState),
1445 .class_size = sizeof(AspeedSMCClass),
1449 static void aspeed_smc_register_types(void)
1453 type_register_static(&aspeed_smc_info);
1454 for (i = 0; i < ARRAY_SIZE(controllers); ++i) {
1456 .name = controllers[i].name,
1457 .parent = TYPE_ASPEED_SMC,
1458 .class_init = aspeed_smc_class_init,
1459 .class_data = (void *)&controllers[i],
1465 type_init(aspeed_smc_register_types)