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syscall: fix dereference of undefined pointer
[qemu.git] / hw / ide / ahci.c
blob406a1b55791c9138072164022e6606cf2e0367e7
1 /*
2 * QEMU AHCI Emulation
3 *
4 * Copyright (c) 2010 qiaochong@loongson.cn
5 * Copyright (c) 2010 Roland Elek <elek.roland@gmail.com>
6 * Copyright (c) 2010 Sebastian Herbszt <herbszt@gmx.de>
7 * Copyright (c) 2010 Alexander Graf <agraf@suse.de>
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2 of the License, or (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
21 *
22 */
23
24 #include "qemu/osdep.h"
25 #include "hw/hw.h"
26 #include "hw/pci/msi.h"
27 #include "hw/i386/pc.h"
28 #include "hw/pci/pci.h"
29
30 #include "qemu/error-report.h"
31 #include "sysemu/block-backend.h"
32 #include "sysemu/dma.h"
33 #include "hw/ide/internal.h"
34 #include "hw/ide/pci.h"
35 #include "hw/ide/ahci_internal.h"
36
37 #define DEBUG_AHCI 0
38
39 #define DPRINTF(port, fmt, ...) \
40 do { \
41 if (DEBUG_AHCI) { \
42 fprintf(stderr, "ahci: %s: [%d] ", __func__, port); \
43 fprintf(stderr, fmt, ## __VA_ARGS__); \
44 } \
45 } while (0)
46
47 static void check_cmd(AHCIState *s, int port);
48 static int handle_cmd(AHCIState *s, int port, uint8_t slot);
49 static void ahci_reset_port(AHCIState *s, int port);
50 static bool ahci_write_fis_d2h(AHCIDevice *ad);
51 static void ahci_init_d2h(AHCIDevice *ad);
52 static int ahci_dma_prepare_buf(IDEDMA *dma, int32_t limit);
53 static bool ahci_map_clb_address(AHCIDevice *ad);
54 static bool ahci_map_fis_address(AHCIDevice *ad);
55 static void ahci_unmap_clb_address(AHCIDevice *ad);
56 static void ahci_unmap_fis_address(AHCIDevice *ad);
57
58
59 static uint32_t ahci_port_read(AHCIState *s, int port, int offset)
60 {
61 uint32_t val;
62 AHCIPortRegs *pr;
63 pr = &s->dev[port].port_regs;
64
65 switch (offset) {
66 case PORT_LST_ADDR:
67 val = pr->lst_addr;
68 break;
69 case PORT_LST_ADDR_HI:
70 val = pr->lst_addr_hi;
71 break;
72 case PORT_FIS_ADDR:
73 val = pr->fis_addr;
74 break;
75 case PORT_FIS_ADDR_HI:
76 val = pr->fis_addr_hi;
77 break;
78 case PORT_IRQ_STAT:
79 val = pr->irq_stat;
80 break;
81 case PORT_IRQ_MASK:
82 val = pr->irq_mask;
83 break;
84 case PORT_CMD:
85 val = pr->cmd;
86 break;
87 case PORT_TFDATA:
88 val = pr->tfdata;
89 break;
90 case PORT_SIG:
91 val = pr->sig;
92 break;
93 case PORT_SCR_STAT:
94 if (s->dev[port].port.ifs[0].blk) {
95 val = SATA_SCR_SSTATUS_DET_DEV_PRESENT_PHY_UP |
96 SATA_SCR_SSTATUS_SPD_GEN1 | SATA_SCR_SSTATUS_IPM_ACTIVE;
97 } else {
98 val = SATA_SCR_SSTATUS_DET_NODEV;
99 }
100 break;
101 case PORT_SCR_CTL:
102 val = pr->scr_ctl;
103 break;
104 case PORT_SCR_ERR:
105 val = pr->scr_err;
106 break;
107 case PORT_SCR_ACT:
108 val = pr->scr_act;
109 break;
110 case PORT_CMD_ISSUE:
111 val = pr->cmd_issue;
112 break;
113 case PORT_RESERVED:
114 default:
115 val = 0;
116 }
117 DPRINTF(port, "offset: 0x%x val: 0x%x\n", offset, val);
118 return val;
119
120 }
121
122 static void ahci_irq_raise(AHCIState *s, AHCIDevice *dev)
123 {
124 DeviceState *dev_state = s->container;
125 PCIDevice *pci_dev = (PCIDevice *) object_dynamic_cast(OBJECT(dev_state),
126 TYPE_PCI_DEVICE);
127
128 DPRINTF(0, "raise irq\n");
129
130 if (pci_dev && msi_enabled(pci_dev)) {
131 msi_notify(pci_dev, 0);
132 } else {
133 qemu_irq_raise(s->irq);
134 }
135 }
136
137 static void ahci_irq_lower(AHCIState *s, AHCIDevice *dev)
138 {
139 DeviceState *dev_state = s->container;
140 PCIDevice *pci_dev = (PCIDevice *) object_dynamic_cast(OBJECT(dev_state),
141 TYPE_PCI_DEVICE);
142
143 DPRINTF(0, "lower irq\n");
144
145 if (!pci_dev || !msi_enabled(pci_dev)) {
146 qemu_irq_lower(s->irq);
147 }
148 }
149
150 static void ahci_check_irq(AHCIState *s)
151 {
152 int i;
153
154 DPRINTF(-1, "check irq %#x\n", s->control_regs.irqstatus);
155
156 s->control_regs.irqstatus = 0;
157 for (i = 0; i < s->ports; i++) {
158 AHCIPortRegs *pr = &s->dev[i].port_regs;
159 if (pr->irq_stat & pr->irq_mask) {
160 s->control_regs.irqstatus |= (1 << i);
161 }
162 }
163
164 if (s->control_regs.irqstatus &&
165 (s->control_regs.ghc & HOST_CTL_IRQ_EN)) {
166 ahci_irq_raise(s, NULL);
167 } else {
168 ahci_irq_lower(s, NULL);
169 }
170 }
171
172 static void ahci_trigger_irq(AHCIState *s, AHCIDevice *d,
173 int irq_type)
174 {
175 DPRINTF(d->port_no, "trigger irq %#x -> %x\n",
176 irq_type, d->port_regs.irq_mask & irq_type);
177
178 d->port_regs.irq_stat |= irq_type;
179 ahci_check_irq(s);
180 }
181
182 static void map_page(AddressSpace *as, uint8_t **ptr, uint64_t addr,
183 uint32_t wanted)
184 {
185 hwaddr len = wanted;
186
187 if (*ptr) {
188 dma_memory_unmap(as, *ptr, len, DMA_DIRECTION_FROM_DEVICE, len);
189 }
190
191 *ptr = dma_memory_map(as, addr, &len, DMA_DIRECTION_FROM_DEVICE);
192 if (len < wanted) {
193 dma_memory_unmap(as, *ptr, len, DMA_DIRECTION_FROM_DEVICE, len);
194 *ptr = NULL;
195 }
196 }
197
198 /**
199 * Check the cmd register to see if we should start or stop
200 * the DMA or FIS RX engines.
201 *
202 * @ad: Device to dis/engage.
203 *
204 * @return 0 on success, -1 on error.
205 */
206 static int ahci_cond_start_engines(AHCIDevice *ad)
207 {
208 AHCIPortRegs *pr = &ad->port_regs;
209 bool cmd_start = pr->cmd & PORT_CMD_START;
210 bool cmd_on = pr->cmd & PORT_CMD_LIST_ON;
211 bool fis_start = pr->cmd & PORT_CMD_FIS_RX;
212 bool fis_on = pr->cmd & PORT_CMD_FIS_ON;
213
214 if (cmd_start && !cmd_on) {
215 if (!ahci_map_clb_address(ad)) {
216 pr->cmd &= ~PORT_CMD_START;
217 error_report("AHCI: Failed to start DMA engine: "
218 "bad command list buffer address");
219 return -1;
220 }
221 } else if (!cmd_start && cmd_on) {
222 ahci_unmap_clb_address(ad);
223 }
224
225 if (fis_start && !fis_on) {
226 if (!ahci_map_fis_address(ad)) {
227 pr->cmd &= ~PORT_CMD_FIS_RX;
228 error_report("AHCI: Failed to start FIS receive engine: "
229 "bad FIS receive buffer address");
230 return -1;
231 }
232 } else if (!fis_start && fis_on) {
233 ahci_unmap_fis_address(ad);
234 }
235
236 return 0;
237 }
238
239 static void ahci_port_write(AHCIState *s, int port, int offset, uint32_t val)
240 {
241 AHCIPortRegs *pr = &s->dev[port].port_regs;
242
243 DPRINTF(port, "offset: 0x%x val: 0x%x\n", offset, val);
244 switch (offset) {
245 case PORT_LST_ADDR:
246 pr->lst_addr = val;
247 break;
248 case PORT_LST_ADDR_HI:
249 pr->lst_addr_hi = val;
250 break;
251 case PORT_FIS_ADDR:
252 pr->fis_addr = val;
253 break;
254 case PORT_FIS_ADDR_HI:
255 pr->fis_addr_hi = val;
256 break;
257 case PORT_IRQ_STAT:
258 pr->irq_stat &= ~val;
259 ahci_check_irq(s);
260 break;
261 case PORT_IRQ_MASK:
262 pr->irq_mask = val & 0xfdc000ff;
263 ahci_check_irq(s);
264 break;
265 case PORT_CMD:
266 /* Block any Read-only fields from being set;
267 * including LIST_ON and FIS_ON.
268 * The spec requires to set ICC bits to zero after the ICC change
269 * is done. We don't support ICC state changes, therefore always
270 * force the ICC bits to zero.
271 */
272 pr->cmd = (pr->cmd & PORT_CMD_RO_MASK) |
273 (val & ~(PORT_CMD_RO_MASK|PORT_CMD_ICC_MASK));
274
275 /* Check FIS RX and CLB engines */
276 ahci_cond_start_engines(&s->dev[port]);
277
278 /* XXX usually the FIS would be pending on the bus here and
279 issuing deferred until the OS enables FIS receival.
280 Instead, we only submit it once - which works in most
281 cases, but is a hack. */
282 if ((pr->cmd & PORT_CMD_FIS_ON) &&
283 !s->dev[port].init_d2h_sent) {
284 ahci_init_d2h(&s->dev[port]);
285 }
286
287 check_cmd(s, port);
288 break;
289 case PORT_TFDATA:
290 /* Read Only. */
291 break;
292 case PORT_SIG:
293 /* Read Only */
294 break;
295 case PORT_SCR_STAT:
296 /* Read Only */
297 break;
298 case PORT_SCR_CTL:
299 if (((pr->scr_ctl & AHCI_SCR_SCTL_DET) == 1) &&
300 ((val & AHCI_SCR_SCTL_DET) == 0)) {
301 ahci_reset_port(s, port);
302 }
303 pr->scr_ctl = val;
304 break;
305 case PORT_SCR_ERR:
306 pr->scr_err &= ~val;
307 break;
308 case PORT_SCR_ACT:
309 /* RW1 */
310 pr->scr_act |= val;
311 break;
312 case PORT_CMD_ISSUE:
313 pr->cmd_issue |= val;
314 check_cmd(s, port);
315 break;
316 default:
317 break;
318 }
319 }
320
321 static uint64_t ahci_mem_read_32(void *opaque, hwaddr addr)
322 {
323 AHCIState *s = opaque;
324 uint32_t val = 0;
325
326 if (addr < AHCI_GENERIC_HOST_CONTROL_REGS_MAX_ADDR) {
327 switch (addr) {
328 case HOST_CAP:
329 val = s->control_regs.cap;
330 break;
331 case HOST_CTL:
332 val = s->control_regs.ghc;
333 break;
334 case HOST_IRQ_STAT:
335 val = s->control_regs.irqstatus;
336 break;
337 case HOST_PORTS_IMPL:
338 val = s->control_regs.impl;
339 break;
340 case HOST_VERSION:
341 val = s->control_regs.version;
342 break;
343 }
344
345 DPRINTF(-1, "(addr 0x%08X), val 0x%08X\n", (unsigned) addr, val);
346 } else if ((addr >= AHCI_PORT_REGS_START_ADDR) &&
347 (addr < (AHCI_PORT_REGS_START_ADDR +
348 (s->ports * AHCI_PORT_ADDR_OFFSET_LEN)))) {
349 val = ahci_port_read(s, (addr - AHCI_PORT_REGS_START_ADDR) >> 7,
350 addr & AHCI_PORT_ADDR_OFFSET_MASK);
351 }
352
353 return val;
354 }
355
356
357 /**
358 * AHCI 1.3 section 3 ("HBA Memory Registers")
359 * Support unaligned 8/16/32 bit reads, and 64 bit aligned reads.
360 * Caller is responsible for masking unwanted higher order bytes.
361 */
362 static uint64_t ahci_mem_read(void *opaque, hwaddr addr, unsigned size)
363 {
364 hwaddr aligned = addr & ~0x3;
365 int ofst = addr - aligned;
366 uint64_t lo = ahci_mem_read_32(opaque, aligned);
367 uint64_t hi;
368 uint64_t val;
369
370 /* if < 8 byte read does not cross 4 byte boundary */
371 if (ofst + size <= 4) {
372 val = lo >> (ofst * 8);
373 } else {
374 g_assert_cmpint(size, >, 1);
375
376 /* If the 64bit read is unaligned, we will produce undefined
377 * results. AHCI does not support unaligned 64bit reads. */
378 hi = ahci_mem_read_32(opaque, aligned + 4);
379 val = (hi << 32 | lo) >> (ofst * 8);
380 }
381
382 DPRINTF(-1, "addr=0x%" HWADDR_PRIx " val=0x%" PRIx64 ", size=%d\n",
383 addr, val, size);
384 return val;
385 }
386
387
388 static void ahci_mem_write(void *opaque, hwaddr addr,
389 uint64_t val, unsigned size)
390 {
391 AHCIState *s = opaque;
392
393 DPRINTF(-1, "addr=0x%" HWADDR_PRIx " val=0x%" PRIx64 ", size=%d\n",
394 addr, val, size);
395
396 /* Only aligned reads are allowed on AHCI */
397 if (addr & 3) {
398 fprintf(stderr, "ahci: Mis-aligned write to addr 0x"
399 TARGET_FMT_plx "\n", addr);
400 return;
401 }
402
403 if (addr < AHCI_GENERIC_HOST_CONTROL_REGS_MAX_ADDR) {
404 DPRINTF(-1, "(addr 0x%08X), val 0x%08"PRIX64"\n", (unsigned) addr, val);
405
406 switch (addr) {
407 case HOST_CAP: /* R/WO, RO */
408 /* FIXME handle R/WO */
409 break;
410 case HOST_CTL: /* R/W */
411 if (val & HOST_CTL_RESET) {
412 DPRINTF(-1, "HBA Reset\n");
413 ahci_reset(s);
414 } else {
415 s->control_regs.ghc = (val & 0x3) | HOST_CTL_AHCI_EN;
416 ahci_check_irq(s);
417 }
418 break;
419 case HOST_IRQ_STAT: /* R/WC, RO */
420 s->control_regs.irqstatus &= ~val;
421 ahci_check_irq(s);
422 break;
423 case HOST_PORTS_IMPL: /* R/WO, RO */
424 /* FIXME handle R/WO */
425 break;
426 case HOST_VERSION: /* RO */
427 /* FIXME report write? */
428 break;
429 default:
430 DPRINTF(-1, "write to unknown register 0x%x\n", (unsigned)addr);
431 }
432 } else if ((addr >= AHCI_PORT_REGS_START_ADDR) &&
433 (addr < (AHCI_PORT_REGS_START_ADDR +
434 (s->ports * AHCI_PORT_ADDR_OFFSET_LEN)))) {
435 ahci_port_write(s, (addr - AHCI_PORT_REGS_START_ADDR) >> 7,
436 addr & AHCI_PORT_ADDR_OFFSET_MASK, val);
437 }
438
439 }
440
441 static const MemoryRegionOps ahci_mem_ops = {
442 .read = ahci_mem_read,
443 .write = ahci_mem_write,
444 .endianness = DEVICE_LITTLE_ENDIAN,
445 };
446
447 static uint64_t ahci_idp_read(void *opaque, hwaddr addr,
448 unsigned size)
449 {
450 AHCIState *s = opaque;
451
452 if (addr == s->idp_offset) {
453 /* index register */
454 return s->idp_index;
455 } else if (addr == s->idp_offset + 4) {
456 /* data register - do memory read at location selected by index */
457 return ahci_mem_read(opaque, s->idp_index, size);
458 } else {
459 return 0;
460 }
461 }
462
463 static void ahci_idp_write(void *opaque, hwaddr addr,
464 uint64_t val, unsigned size)
465 {
466 AHCIState *s = opaque;
467
468 if (addr == s->idp_offset) {
469 /* index register - mask off reserved bits */
470 s->idp_index = (uint32_t)val & ((AHCI_MEM_BAR_SIZE - 1) & ~3);
471 } else if (addr == s->idp_offset + 4) {
472 /* data register - do memory write at location selected by index */
473 ahci_mem_write(opaque, s->idp_index, val, size);
474 }
475 }
476
477 static const MemoryRegionOps ahci_idp_ops = {
478 .read = ahci_idp_read,
479 .write = ahci_idp_write,
480 .endianness = DEVICE_LITTLE_ENDIAN,
481 };
482
483
484 static void ahci_reg_init(AHCIState *s)
485 {
486 int i;
487
488 s->control_regs.cap = (s->ports - 1) |
489 (AHCI_NUM_COMMAND_SLOTS << 8) |
490 (AHCI_SUPPORTED_SPEED_GEN1 << AHCI_SUPPORTED_SPEED) |
491 HOST_CAP_NCQ | HOST_CAP_AHCI | HOST_CAP_64;
492
493 s->control_regs.impl = (1 << s->ports) - 1;
494
495 s->control_regs.version = AHCI_VERSION_1_0;
496
497 for (i = 0; i < s->ports; i++) {
498 s->dev[i].port_state = STATE_RUN;
499 }
500 }
501
502 static void check_cmd(AHCIState *s, int port)
503 {
504 AHCIPortRegs *pr = &s->dev[port].port_regs;
505 uint8_t slot;
506
507 if ((pr->cmd & PORT_CMD_START) && pr->cmd_issue) {
508 for (slot = 0; (slot < 32) && pr->cmd_issue; slot++) {
509 if ((pr->cmd_issue & (1U << slot)) &&
510 !handle_cmd(s, port, slot)) {
511 pr->cmd_issue &= ~(1U << slot);
512 }
513 }
514 }
515 }
516
517 static void ahci_check_cmd_bh(void *opaque)
518 {
519 AHCIDevice *ad = opaque;
520
521 qemu_bh_delete(ad->check_bh);
522 ad->check_bh = NULL;
523
524 if ((ad->busy_slot != -1) &&
525 !(ad->port.ifs[0].status & (BUSY_STAT|DRQ_STAT))) {
526 /* no longer busy */
527 ad->port_regs.cmd_issue &= ~(1 << ad->busy_slot);
528 ad->busy_slot = -1;
529 }
530
531 check_cmd(ad->hba, ad->port_no);
532 }
533
534 static void ahci_init_d2h(AHCIDevice *ad)
535 {
536 IDEState *ide_state = &ad->port.ifs[0];
537 AHCIPortRegs *pr = &ad->port_regs;
538
539 if (ad->init_d2h_sent) {
540 return;
541 }
542
543 if (ahci_write_fis_d2h(ad)) {
544 ad->init_d2h_sent = true;
545 /* We're emulating receiving the first Reg H2D Fis from the device;
546 * Update the SIG register, but otherwise proceed as normal. */
547 pr->sig = ((uint32_t)ide_state->hcyl << 24) |
548 (ide_state->lcyl << 16) |
549 (ide_state->sector << 8) |
550 (ide_state->nsector & 0xFF);
551 }
552 }
553
554 static void ahci_set_signature(AHCIDevice *ad, uint32_t sig)
555 {
556 IDEState *s = &ad->port.ifs[0];
557 s->hcyl = sig >> 24 & 0xFF;
558 s->lcyl = sig >> 16 & 0xFF;
559 s->sector = sig >> 8 & 0xFF;
560 s->nsector = sig & 0xFF;
561
562 DPRINTF(ad->port_no, "set hcyl:lcyl:sect:nsect = 0x%08x\n", sig);
563 }
564
565 static void ahci_reset_port(AHCIState *s, int port)
566 {
567 AHCIDevice *d = &s->dev[port];
568 AHCIPortRegs *pr = &d->port_regs;
569 IDEState *ide_state = &d->port.ifs[0];
570 int i;
571
572 DPRINTF(port, "reset port\n");
573
574 ide_bus_reset(&d->port);
575 ide_state->ncq_queues = AHCI_MAX_CMDS;
576
577 pr->scr_stat = 0;
578 pr->scr_err = 0;
579 pr->scr_act = 0;
580 pr->tfdata = 0x7F;
581 pr->sig = 0xFFFFFFFF;
582 d->busy_slot = -1;
583 d->init_d2h_sent = false;
584
585 ide_state = &s->dev[port].port.ifs[0];
586 if (!ide_state->blk) {
587 return;
588 }
589
590 /* reset ncq queue */
591 for (i = 0; i < AHCI_MAX_CMDS; i++) {
592 NCQTransferState *ncq_tfs = &s->dev[port].ncq_tfs[i];
593 ncq_tfs->halt = false;
594 if (!ncq_tfs->used) {
595 continue;
596 }
597
598 if (ncq_tfs->aiocb) {
599 blk_aio_cancel(ncq_tfs->aiocb);
600 ncq_tfs->aiocb = NULL;
601 }
602
603 /* Maybe we just finished the request thanks to blk_aio_cancel() */
604 if (!ncq_tfs->used) {
605 continue;
606 }
607
608 qemu_sglist_destroy(&ncq_tfs->sglist);
609 ncq_tfs->used = 0;
610 }
611
612 s->dev[port].port_state = STATE_RUN;
613 if (ide_state->drive_kind == IDE_CD) {
614 ahci_set_signature(d, SATA_SIGNATURE_CDROM);\
615 ide_state->status = SEEK_STAT | WRERR_STAT | READY_STAT;
616 } else {
617 ahci_set_signature(d, SATA_SIGNATURE_DISK);
618 ide_state->status = SEEK_STAT | WRERR_STAT;
619 }
620
621 ide_state->error = 1;
622 ahci_init_d2h(d);
623 }
624
625 static void debug_print_fis(uint8_t *fis, int cmd_len)
626 {
627 #if DEBUG_AHCI
628 int i;
629
630 fprintf(stderr, "fis:");
631 for (i = 0; i < cmd_len; i++) {
632 if ((i & 0xf) == 0) {
633 fprintf(stderr, "\n%02x:",i);
634 }
635 fprintf(stderr, "%02x ",fis[i]);
636 }
637 fprintf(stderr, "\n");
638 #endif
639 }
640
641 static bool ahci_map_fis_address(AHCIDevice *ad)
642 {
643 AHCIPortRegs *pr = &ad->port_regs;
644 map_page(ad->hba->as, &ad->res_fis,
645 ((uint64_t)pr->fis_addr_hi << 32) | pr->fis_addr, 256);
646 if (ad->res_fis != NULL) {
647 pr->cmd |= PORT_CMD_FIS_ON;
648 return true;
649 }
650
651 pr->cmd &= ~PORT_CMD_FIS_ON;
652 return false;
653 }
654
655 static void ahci_unmap_fis_address(AHCIDevice *ad)
656 {
657 if (ad->res_fis == NULL) {
658 DPRINTF(ad->port_no, "Attempt to unmap NULL FIS address\n");
659 return;
660 }
661 ad->port_regs.cmd &= ~PORT_CMD_FIS_ON;
662 dma_memory_unmap(ad->hba->as, ad->res_fis, 256,
663 DMA_DIRECTION_FROM_DEVICE, 256);
664 ad->res_fis = NULL;
665 }
666
667 static bool ahci_map_clb_address(AHCIDevice *ad)
668 {
669 AHCIPortRegs *pr = &ad->port_regs;
670 ad->cur_cmd = NULL;
671 map_page(ad->hba->as, &ad->lst,
672 ((uint64_t)pr->lst_addr_hi << 32) | pr->lst_addr, 1024);
673 if (ad->lst != NULL) {
674 pr->cmd |= PORT_CMD_LIST_ON;
675 return true;
676 }
677
678 pr->cmd &= ~PORT_CMD_LIST_ON;
679 return false;
680 }
681
682 static void ahci_unmap_clb_address(AHCIDevice *ad)
683 {
684 if (ad->lst == NULL) {
685 DPRINTF(ad->port_no, "Attempt to unmap NULL CLB address\n");
686 return;
687 }
688 ad->port_regs.cmd &= ~PORT_CMD_LIST_ON;
689 dma_memory_unmap(ad->hba->as, ad->lst, 1024,
690 DMA_DIRECTION_FROM_DEVICE, 1024);
691 ad->lst = NULL;
692 }
693
694 static void ahci_write_fis_sdb(AHCIState *s, NCQTransferState *ncq_tfs)
695 {
696 AHCIDevice *ad = ncq_tfs->drive;
697 AHCIPortRegs *pr = &ad->port_regs;
698 IDEState *ide_state;
699 SDBFIS *sdb_fis;
700
701 if (!ad->res_fis ||
702 !(pr->cmd & PORT_CMD_FIS_RX)) {
703 return;
704 }
705
706 sdb_fis = (SDBFIS *)&ad->res_fis[RES_FIS_SDBFIS];
707 ide_state = &ad->port.ifs[0];
708
709 sdb_fis->type = SATA_FIS_TYPE_SDB;
710 /* Interrupt pending & Notification bit */
711 sdb_fis->flags = 0x40; /* Interrupt bit, always 1 for NCQ */
712 sdb_fis->status = ide_state->status & 0x77;
713 sdb_fis->error = ide_state->error;
714 /* update SAct field in SDB_FIS */
715 sdb_fis->payload = cpu_to_le32(ad->finished);
716
717 /* Update shadow registers (except BSY 0x80 and DRQ 0x08) */
718 pr->tfdata = (ad->port.ifs[0].error << 8) |
719 (ad->port.ifs[0].status & 0x77) |
720 (pr->tfdata & 0x88);
721 pr->scr_act &= ~ad->finished;
722 ad->finished = 0;
723
724 /* Trigger IRQ if interrupt bit is set (which currently, it always is) */
725 if (sdb_fis->flags & 0x40) {
726 ahci_trigger_irq(s, ad, PORT_IRQ_SDB_FIS);
727 }
728 }
729
730 static void ahci_write_fis_pio(AHCIDevice *ad, uint16_t len)
731 {
732 AHCIPortRegs *pr = &ad->port_regs;
733 uint8_t *pio_fis;
734 IDEState *s = &ad->port.ifs[0];
735
736 if (!ad->res_fis || !(pr->cmd & PORT_CMD_FIS_RX)) {
737 return;
738 }
739
740 pio_fis = &ad->res_fis[RES_FIS_PSFIS];
741
742 pio_fis[0] = SATA_FIS_TYPE_PIO_SETUP;
743 pio_fis[1] = (ad->hba->control_regs.irqstatus ? (1 << 6) : 0);
744 pio_fis[2] = s->status;
745 pio_fis[3] = s->error;
746
747 pio_fis[4] = s->sector;
748 pio_fis[5] = s->lcyl;
749 pio_fis[6] = s->hcyl;
750 pio_fis[7] = s->select;
751 pio_fis[8] = s->hob_sector;
752 pio_fis[9] = s->hob_lcyl;
753 pio_fis[10] = s->hob_hcyl;
754 pio_fis[11] = 0;
755 pio_fis[12] = s->nsector & 0xFF;
756 pio_fis[13] = (s->nsector >> 8) & 0xFF;
757 pio_fis[14] = 0;
758 pio_fis[15] = s->status;
759 pio_fis[16] = len & 255;
760 pio_fis[17] = len >> 8;
761 pio_fis[18] = 0;
762 pio_fis[19] = 0;
763
764 /* Update shadow registers: */
765 pr->tfdata = (ad->port.ifs[0].error << 8) |
766 ad->port.ifs[0].status;
767
768 if (pio_fis[2] & ERR_STAT) {
769 ahci_trigger_irq(ad->hba, ad, PORT_IRQ_TF_ERR);
770 }
771
772 ahci_trigger_irq(ad->hba, ad, PORT_IRQ_PIOS_FIS);
773 }
774
775 static bool ahci_write_fis_d2h(AHCIDevice *ad)
776 {
777 AHCIPortRegs *pr = &ad->port_regs;
778 uint8_t *d2h_fis;
779 int i;
780 IDEState *s = &ad->port.ifs[0];
781
782 if (!ad->res_fis || !(pr->cmd & PORT_CMD_FIS_RX)) {
783 return false;
784 }
785
786 d2h_fis = &ad->res_fis[RES_FIS_RFIS];
787
788 d2h_fis[0] = SATA_FIS_TYPE_REGISTER_D2H;
789 d2h_fis[1] = (ad->hba->control_regs.irqstatus ? (1 << 6) : 0);
790 d2h_fis[2] = s->status;
791 d2h_fis[3] = s->error;
792
793 d2h_fis[4] = s->sector;
794 d2h_fis[5] = s->lcyl;
795 d2h_fis[6] = s->hcyl;
796 d2h_fis[7] = s->select;
797 d2h_fis[8] = s->hob_sector;
798 d2h_fis[9] = s->hob_lcyl;
799 d2h_fis[10] = s->hob_hcyl;
800 d2h_fis[11] = 0;
801 d2h_fis[12] = s->nsector & 0xFF;
802 d2h_fis[13] = (s->nsector >> 8) & 0xFF;
803 for (i = 14; i < 20; i++) {
804 d2h_fis[i] = 0;
805 }
806
807 /* Update shadow registers: */
808 pr->tfdata = (ad->port.ifs[0].error << 8) |
809 ad->port.ifs[0].status;
810
811 if (d2h_fis[2] & ERR_STAT) {
812 ahci_trigger_irq(ad->hba, ad, PORT_IRQ_TF_ERR);
813 }
814
815 ahci_trigger_irq(ad->hba, ad, PORT_IRQ_D2H_REG_FIS);
816 return true;
817 }
818
819 static int prdt_tbl_entry_size(const AHCI_SG *tbl)
820 {
821 /* flags_size is zero-based */
822 return (le32_to_cpu(tbl->flags_size) & AHCI_PRDT_SIZE_MASK) + 1;
823 }
824
825 /**
826 * Fetch entries in a guest-provided PRDT and convert it into a QEMU SGlist.
827 * @ad: The AHCIDevice for whom we are building the SGList.
828 * @sglist: The SGList target to add PRD entries to.
829 * @cmd: The AHCI Command Header that describes where the PRDT is.
830 * @limit: The remaining size of the S/ATA transaction, in bytes.
831 * @offset: The number of bytes already transferred, in bytes.
832 *
833 * The AHCI PRDT can describe up to 256GiB. S/ATA only support transactions of
834 * up to 32MiB as of ATA8-ACS3 rev 1b, assuming a 512 byte sector size. We stop
835 * building the sglist from the PRDT as soon as we hit @limit bytes,
836 * which is <= INT32_MAX/2GiB.
837 */
838 static int ahci_populate_sglist(AHCIDevice *ad, QEMUSGList *sglist,
839 AHCICmdHdr *cmd, int64_t limit, uint64_t offset)
840 {
841 uint16_t opts = le16_to_cpu(cmd->opts);
842 uint16_t prdtl = le16_to_cpu(cmd->prdtl);
843 uint64_t cfis_addr = le64_to_cpu(cmd->tbl_addr);
844 uint64_t prdt_addr = cfis_addr + 0x80;
845 dma_addr_t prdt_len = (prdtl * sizeof(AHCI_SG));
846 dma_addr_t real_prdt_len = prdt_len;
847 uint8_t *prdt;
848 int i;
849 int r = 0;
850 uint64_t sum = 0;
851 int off_idx = -1;
852 int64_t off_pos = -1;
853 int tbl_entry_size;
854 IDEBus *bus = &ad->port;
855 BusState *qbus = BUS(bus);
856
857 if (!prdtl) {
858 DPRINTF(ad->port_no, "no sg list given by guest: 0x%08x\n", opts);
859 return -1;
860 }
861
862 /* map PRDT */
863 if (!(prdt = dma_memory_map(ad->hba->as, prdt_addr, &prdt_len,
864 DMA_DIRECTION_TO_DEVICE))){
865 DPRINTF(ad->port_no, "map failed\n");
866 return -1;
867 }
868
869 if (prdt_len < real_prdt_len) {
870 DPRINTF(ad->port_no, "mapped less than expected\n");
871 r = -1;
872 goto out;
873 }
874
875 /* Get entries in the PRDT, init a qemu sglist accordingly */
876 if (prdtl > 0) {
877 AHCI_SG *tbl = (AHCI_SG *)prdt;
878 sum = 0;
879 for (i = 0; i < prdtl; i++) {
880 tbl_entry_size = prdt_tbl_entry_size(&tbl[i]);
881 if (offset < (sum + tbl_entry_size)) {
882 off_idx = i;
883 off_pos = offset - sum;
884 break;
885 }
886 sum += tbl_entry_size;
887 }
888 if ((off_idx == -1) || (off_pos < 0) || (off_pos > tbl_entry_size)) {
889 DPRINTF(ad->port_no, "%s: Incorrect offset! "
890 "off_idx: %d, off_pos: %"PRId64"\n",
891 __func__, off_idx, off_pos);
892 r = -1;
893 goto out;
894 }
895
896 qemu_sglist_init(sglist, qbus->parent, (prdtl - off_idx),
897 ad->hba->as);
898 qemu_sglist_add(sglist, le64_to_cpu(tbl[off_idx].addr) + off_pos,
899 MIN(prdt_tbl_entry_size(&tbl[off_idx]) - off_pos,
900 limit));
901
902 for (i = off_idx + 1; i < prdtl && sglist->size < limit; i++) {
903 qemu_sglist_add(sglist, le64_to_cpu(tbl[i].addr),
904 MIN(prdt_tbl_entry_size(&tbl[i]),
905 limit - sglist->size));
906 }
907 }
908
909 out:
910 dma_memory_unmap(ad->hba->as, prdt, prdt_len,
911 DMA_DIRECTION_TO_DEVICE, prdt_len);
912 return r;
913 }
914
915 static void ncq_err(NCQTransferState *ncq_tfs)
916 {
917 IDEState *ide_state = &ncq_tfs->drive->port.ifs[0];
918
919 ide_state->error = ABRT_ERR;
920 ide_state->status = READY_STAT | ERR_STAT;
921 ncq_tfs->drive->port_regs.scr_err |= (1 << ncq_tfs->tag);
922 qemu_sglist_destroy(&ncq_tfs->sglist);
923 ncq_tfs->used = 0;
924 }
925
926 static void ncq_finish(NCQTransferState *ncq_tfs)
927 {
928 /* If we didn't error out, set our finished bit. Errored commands
929 * do not get a bit set for the SDB FIS ACT register, nor do they
930 * clear the outstanding bit in scr_act (PxSACT). */
931 if (!(ncq_tfs->drive->port_regs.scr_err & (1 << ncq_tfs->tag))) {
932 ncq_tfs->drive->finished |= (1 << ncq_tfs->tag);
933 }
934
935 ahci_write_fis_sdb(ncq_tfs->drive->hba, ncq_tfs);
936
937 DPRINTF(ncq_tfs->drive->port_no, "NCQ transfer tag %d finished\n",
938 ncq_tfs->tag);
939
940 block_acct_done(blk_get_stats(ncq_tfs->drive->port.ifs[0].blk),
941 &ncq_tfs->acct);
942 qemu_sglist_destroy(&ncq_tfs->sglist);
943 ncq_tfs->used = 0;
944 }
945
946 static void ncq_cb(void *opaque, int ret)
947 {
948 NCQTransferState *ncq_tfs = (NCQTransferState *)opaque;
949 IDEState *ide_state = &ncq_tfs->drive->port.ifs[0];
950
951 ncq_tfs->aiocb = NULL;
952 if (ret == -ECANCELED) {
953 return;
954 }
955
956 if (ret < 0) {
957 bool is_read = ncq_tfs->cmd == READ_FPDMA_QUEUED;
958 BlockErrorAction action = blk_get_error_action(ide_state->blk,
959 is_read, -ret);
960 if (action == BLOCK_ERROR_ACTION_STOP) {
961 ncq_tfs->halt = true;
962 ide_state->bus->error_status = IDE_RETRY_HBA;
963 } else if (action == BLOCK_ERROR_ACTION_REPORT) {
964 ncq_err(ncq_tfs);
965 }
966 blk_error_action(ide_state->blk, action, is_read, -ret);
967 } else {
968 ide_state->status = READY_STAT | SEEK_STAT;
969 }
970
971 if (!ncq_tfs->halt) {
972 ncq_finish(ncq_tfs);
973 }
974 }
975
976 static int is_ncq(uint8_t ata_cmd)
977 {
978 /* Based on SATA 3.2 section 13.6.3.2 */
979 switch (ata_cmd) {
980 case READ_FPDMA_QUEUED:
981 case WRITE_FPDMA_QUEUED:
982 case NCQ_NON_DATA:
983 case RECEIVE_FPDMA_QUEUED:
984 case SEND_FPDMA_QUEUED:
985 return 1;
986 default:
987 return 0;
988 }
989 }
990
991 static void execute_ncq_command(NCQTransferState *ncq_tfs)
992 {
993 AHCIDevice *ad = ncq_tfs->drive;
994 IDEState *ide_state = &ad->port.ifs[0];
995 int port = ad->port_no;
996
997 g_assert(is_ncq(ncq_tfs->cmd));
998 ncq_tfs->halt = false;
999
1000 switch (ncq_tfs->cmd) {
1001 case READ_FPDMA_QUEUED:
1002 DPRINTF(port, "NCQ reading %d sectors from LBA %"PRId64", tag %d\n",
1003 ncq_tfs->sector_count, ncq_tfs->lba, ncq_tfs->tag);
1004
1005 DPRINTF(port, "tag %d aio read %"PRId64"\n",
1006 ncq_tfs->tag, ncq_tfs->lba);
1007
1008 dma_acct_start(ide_state->blk, &ncq_tfs->acct,
1009 &ncq_tfs->sglist, BLOCK_ACCT_READ);
1010 ncq_tfs->aiocb = dma_blk_read(ide_state->blk, &ncq_tfs->sglist,
1011 ncq_tfs->lba << BDRV_SECTOR_BITS,
1012 BDRV_SECTOR_SIZE,
1013 ncq_cb, ncq_tfs);
1014 break;
1015 case WRITE_FPDMA_QUEUED:
1016 DPRINTF(port, "NCQ writing %d sectors to LBA %"PRId64", tag %d\n",
1017 ncq_tfs->sector_count, ncq_tfs->lba, ncq_tfs->tag);
1018
1019 DPRINTF(port, "tag %d aio write %"PRId64"\n",
1020 ncq_tfs->tag, ncq_tfs->lba);
1021
1022 dma_acct_start(ide_state->blk, &ncq_tfs->acct,
1023 &ncq_tfs->sglist, BLOCK_ACCT_WRITE);
1024 ncq_tfs->aiocb = dma_blk_write(ide_state->blk, &ncq_tfs->sglist,
1025 ncq_tfs->lba << BDRV_SECTOR_BITS,
1026 BDRV_SECTOR_SIZE,
1027 ncq_cb, ncq_tfs);
1028 break;
1029 default:
1030 DPRINTF(port, "error: unsupported NCQ command (0x%02x) received\n",
1031 ncq_tfs->cmd);
1032 ncq_err(ncq_tfs);
1033 }
1034 }
1035
1036
1037 static void process_ncq_command(AHCIState *s, int port, uint8_t *cmd_fis,
1038 uint8_t slot)
1039 {
1040 AHCIDevice *ad = &s->dev[port];
1041 IDEState *ide_state = &ad->port.ifs[0];
1042 NCQFrame *ncq_fis = (NCQFrame*)cmd_fis;
1043 uint8_t tag = ncq_fis->tag >> 3;
1044 NCQTransferState *ncq_tfs = &ad->ncq_tfs[tag];
1045 size_t size;
1046
1047 g_assert(is_ncq(ncq_fis->command));
1048 if (ncq_tfs->used) {
1049 /* error - already in use */
1050 fprintf(stderr, "%s: tag %d already used\n", __FUNCTION__, tag);
1051 return;
1052 }
1053
1054 ncq_tfs->used = 1;
1055 ncq_tfs->drive = ad;
1056 ncq_tfs->slot = slot;
1057 ncq_tfs->cmdh = &((AHCICmdHdr *)ad->lst)[slot];
1058 ncq_tfs->cmd = ncq_fis->command;
1059 ncq_tfs->lba = ((uint64_t)ncq_fis->lba5 << 40) |
1060 ((uint64_t)ncq_fis->lba4 << 32) |
1061 ((uint64_t)ncq_fis->lba3 << 24) |
1062 ((uint64_t)ncq_fis->lba2 << 16) |
1063 ((uint64_t)ncq_fis->lba1 << 8) |
1064 (uint64_t)ncq_fis->lba0;
1065 ncq_tfs->tag = tag;
1066
1067 /* Sanity-check the NCQ packet */
1068 if (tag != slot) {
1069 DPRINTF(port, "Warn: NCQ slot (%d) did not match the given tag (%d)\n",
1070 slot, tag);
1071 }
1072
1073 if (ncq_fis->aux0 || ncq_fis->aux1 || ncq_fis->aux2 || ncq_fis->aux3) {
1074 DPRINTF(port, "Warn: Attempt to use NCQ auxiliary fields.\n");
1075 }
1076 if (ncq_fis->prio || ncq_fis->icc) {
1077 DPRINTF(port, "Warn: Unsupported attempt to use PRIO/ICC fields\n");
1078 }
1079 if (ncq_fis->fua & NCQ_FIS_FUA_MASK) {
1080 DPRINTF(port, "Warn: Unsupported attempt to use Force Unit Access\n");
1081 }
1082 if (ncq_fis->tag & NCQ_FIS_RARC_MASK) {
1083 DPRINTF(port, "Warn: Unsupported attempt to use Rebuild Assist\n");
1084 }
1085
1086 ncq_tfs->sector_count = ((ncq_fis->sector_count_high << 8) |
1087 ncq_fis->sector_count_low);
1088 if (!ncq_tfs->sector_count) {
1089 ncq_tfs->sector_count = 0x10000;
1090 }
1091 size = ncq_tfs->sector_count * 512;
1092 ahci_populate_sglist(ad, &ncq_tfs->sglist, ncq_tfs->cmdh, size, 0);
1093
1094 if (ncq_tfs->sglist.size < size) {
1095 error_report("ahci: PRDT length for NCQ command (0x%zx) "
1096 "is smaller than the requested size (0x%zx)",
1097 ncq_tfs->sglist.size, size);
1098 ncq_err(ncq_tfs);
1099 ahci_trigger_irq(ad->hba, ad, PORT_IRQ_OVERFLOW);
1100 return;
1101 } else if (ncq_tfs->sglist.size != size) {
1102 DPRINTF(port, "Warn: PRDTL (0x%zx)"
1103 " does not match requested size (0x%zx)",
1104 ncq_tfs->sglist.size, size);
1105 }
1106
1107 DPRINTF(port, "NCQ transfer LBA from %"PRId64" to %"PRId64", "
1108 "drive max %"PRId64"\n",
1109 ncq_tfs->lba, ncq_tfs->lba + ncq_tfs->sector_count - 1,
1110 ide_state->nb_sectors - 1);
1111
1112 execute_ncq_command(ncq_tfs);
1113 }
1114
1115 static AHCICmdHdr *get_cmd_header(AHCIState *s, uint8_t port, uint8_t slot)
1116 {
1117 if (port >= s->ports || slot >= AHCI_MAX_CMDS) {
1118 return NULL;
1119 }
1120
1121 return s->dev[port].lst ? &((AHCICmdHdr *)s->dev[port].lst)[slot] : NULL;
1122 }
1123
1124 static void handle_reg_h2d_fis(AHCIState *s, int port,
1125 uint8_t slot, uint8_t *cmd_fis)
1126 {
1127 IDEState *ide_state = &s->dev[port].port.ifs[0];
1128 AHCICmdHdr *cmd = get_cmd_header(s, port, slot);
1129 uint16_t opts = le16_to_cpu(cmd->opts);
1130
1131 if (cmd_fis[1] & 0x0F) {
1132 DPRINTF(port, "Port Multiplier not supported."
1133 " cmd_fis[0]=%02x cmd_fis[1]=%02x cmd_fis[2]=%02x\n",
1134 cmd_fis[0], cmd_fis[1], cmd_fis[2]);
1135 return;
1136 }
1137
1138 if (cmd_fis[1] & 0x70) {
1139 DPRINTF(port, "Reserved flags set in H2D Register FIS."
1140 " cmd_fis[0]=%02x cmd_fis[1]=%02x cmd_fis[2]=%02x\n",
1141 cmd_fis[0], cmd_fis[1], cmd_fis[2]);
1142 return;
1143 }
1144
1145 if (!(cmd_fis[1] & SATA_FIS_REG_H2D_UPDATE_COMMAND_REGISTER)) {
1146 switch (s->dev[port].port_state) {
1147 case STATE_RUN:
1148 if (cmd_fis[15] & ATA_SRST) {
1149 s->dev[port].port_state = STATE_RESET;
1150 }
1151 break;
1152 case STATE_RESET:
1153 if (!(cmd_fis[15] & ATA_SRST)) {
1154 ahci_reset_port(s, port);
1155 }
1156 break;
1157 }
1158 return;
1159 }
1160
1161 /* Check for NCQ command */
1162 if (is_ncq(cmd_fis[2])) {
1163 process_ncq_command(s, port, cmd_fis, slot);
1164 return;
1165 }
1166
1167 /* Decompose the FIS:
1168 * AHCI does not interpret FIS packets, it only forwards them.
1169 * SATA 1.0 describes how to decode LBA28 and CHS FIS packets.
1170 * Later specifications, e.g, SATA 3.2, describe LBA48 FIS packets.
1171 *
1172 * ATA4 describes sector number for LBA28/CHS commands.
1173 * ATA6 describes sector number for LBA48 commands.
1174 * ATA8 deprecates CHS fully, describing only LBA28/48.
1175 *
1176 * We dutifully convert the FIS into IDE registers, and allow the
1177 * core layer to interpret them as needed. */
1178 ide_state->feature = cmd_fis[3];
1179 ide_state->sector = cmd_fis[4]; /* LBA 7:0 */
1180 ide_state->lcyl = cmd_fis[5]; /* LBA 15:8 */
1181 ide_state->hcyl = cmd_fis[6]; /* LBA 23:16 */
1182 ide_state->select = cmd_fis[7]; /* LBA 27:24 (LBA28) */
1183 ide_state->hob_sector = cmd_fis[8]; /* LBA 31:24 */
1184 ide_state->hob_lcyl = cmd_fis[9]; /* LBA 39:32 */
1185 ide_state->hob_hcyl = cmd_fis[10]; /* LBA 47:40 */
1186 ide_state->hob_feature = cmd_fis[11];
1187 ide_state->nsector = (int64_t)((cmd_fis[13] << 8) | cmd_fis[12]);
1188 /* 14, 16, 17, 18, 19: Reserved (SATA 1.0) */
1189 /* 15: Only valid when UPDATE_COMMAND not set. */
1190
1191 /* Copy the ACMD field (ATAPI packet, if any) from the AHCI command
1192 * table to ide_state->io_buffer */
1193 if (opts & AHCI_CMD_ATAPI) {
1194 memcpy(ide_state->io_buffer, &cmd_fis[AHCI_COMMAND_TABLE_ACMD], 0x10);
1195 debug_print_fis(ide_state->io_buffer, 0x10);
1196 s->dev[port].done_atapi_packet = false;
1197 /* XXX send PIO setup FIS */
1198 }
1199
1200 ide_state->error = 0;
1201
1202 /* Reset transferred byte counter */
1203 cmd->status = 0;
1204
1205 /* We're ready to process the command in FIS byte 2. */
1206 ide_exec_cmd(&s->dev[port].port, cmd_fis[2]);
1207 }
1208
1209 static int handle_cmd(AHCIState *s, int port, uint8_t slot)
1210 {
1211 IDEState *ide_state;
1212 uint64_t tbl_addr;
1213 AHCICmdHdr *cmd;
1214 uint8_t *cmd_fis;
1215 dma_addr_t cmd_len;
1216
1217 if (s->dev[port].port.ifs[0].status & (BUSY_STAT|DRQ_STAT)) {
1218 /* Engine currently busy, try again later */
1219 DPRINTF(port, "engine busy\n");
1220 return -1;
1221 }
1222
1223 if (!s->dev[port].lst) {
1224 DPRINTF(port, "error: lst not given but cmd handled");
1225 return -1;
1226 }
1227 cmd = get_cmd_header(s, port, slot);
1228 /* remember current slot handle for later */
1229 s->dev[port].cur_cmd = cmd;
1230
1231 /* The device we are working for */
1232 ide_state = &s->dev[port].port.ifs[0];
1233 if (!ide_state->blk) {
1234 DPRINTF(port, "error: guest accessed unused port");
1235 return -1;
1236 }
1237
1238 tbl_addr = le64_to_cpu(cmd->tbl_addr);
1239 cmd_len = 0x80;
1240 cmd_fis = dma_memory_map(s->as, tbl_addr, &cmd_len,
1241 DMA_DIRECTION_FROM_DEVICE);
1242 if (!cmd_fis) {
1243 DPRINTF(port, "error: guest passed us an invalid cmd fis\n");
1244 return -1;
1245 } else if (cmd_len != 0x80) {
1246 ahci_trigger_irq(s, &s->dev[port], PORT_IRQ_HBUS_ERR);
1247 DPRINTF(port, "error: dma_memory_map failed: "
1248 "(len(%02"PRIx64") != 0x80)\n",
1249 cmd_len);
1250 goto out;
1251 }
1252 debug_print_fis(cmd_fis, 0x80);
1253
1254 switch (cmd_fis[0]) {
1255 case SATA_FIS_TYPE_REGISTER_H2D:
1256 handle_reg_h2d_fis(s, port, slot, cmd_fis);
1257 break;
1258 default:
1259 DPRINTF(port, "unknown command cmd_fis[0]=%02x cmd_fis[1]=%02x "
1260 "cmd_fis[2]=%02x\n", cmd_fis[0], cmd_fis[1],
1261 cmd_fis[2]);
1262 break;
1263 }
1264
1265 out:
1266 dma_memory_unmap(s->as, cmd_fis, cmd_len, DMA_DIRECTION_FROM_DEVICE,
1267 cmd_len);
1268
1269 if (s->dev[port].port.ifs[0].status & (BUSY_STAT|DRQ_STAT)) {
1270 /* async command, complete later */
1271 s->dev[port].busy_slot = slot;
1272 return -1;
1273 }
1274
1275 /* done handling the command */
1276 return 0;
1277 }
1278
1279 /* DMA dev <-> ram */
1280 static void ahci_start_transfer(IDEDMA *dma)
1281 {
1282 AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma);
1283 IDEState *s = &ad->port.ifs[0];
1284 uint32_t size = (uint32_t)(s->data_end - s->data_ptr);
1285 /* write == ram -> device */
1286 uint16_t opts = le16_to_cpu(ad->cur_cmd->opts);
1287 int is_write = opts & AHCI_CMD_WRITE;
1288 int is_atapi = opts & AHCI_CMD_ATAPI;
1289 int has_sglist = 0;
1290
1291 if (is_atapi && !ad->done_atapi_packet) {
1292 /* already prepopulated iobuffer */
1293 ad->done_atapi_packet = true;
1294 size = 0;
1295 goto out;
1296 }
1297
1298 if (ahci_dma_prepare_buf(dma, size)) {
1299 has_sglist = 1;
1300 }
1301
1302 DPRINTF(ad->port_no, "%sing %d bytes on %s w/%s sglist\n",
1303 is_write ? "writ" : "read", size, is_atapi ? "atapi" : "ata",
1304 has_sglist ? "" : "o");
1305
1306 if (has_sglist && size) {
1307 if (is_write) {
1308 dma_buf_write(s->data_ptr, size, &s->sg);
1309 } else {
1310 dma_buf_read(s->data_ptr, size, &s->sg);
1311 }
1312 }
1313
1314 out:
1315 /* declare that we processed everything */
1316 s->data_ptr = s->data_end;
1317
1318 /* Update number of transferred bytes, destroy sglist */
1319 dma_buf_commit(s, size);
1320
1321 s->end_transfer_func(s);
1322
1323 if (!(s->status & DRQ_STAT)) {
1324 /* done with PIO send/receive */
1325 ahci_write_fis_pio(ad, le32_to_cpu(ad->cur_cmd->status));
1326 }
1327 }
1328
1329 static void ahci_start_dma(IDEDMA *dma, IDEState *s,
1330 BlockCompletionFunc *dma_cb)
1331 {
1332 AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma);
1333 DPRINTF(ad->port_no, "\n");
1334 s->io_buffer_offset = 0;
1335 dma_cb(s, 0);
1336 }
1337
1338 static void ahci_restart_dma(IDEDMA *dma)
1339 {
1340 /* Nothing to do, ahci_start_dma already resets s->io_buffer_offset. */
1341 }
1342
1343 /**
1344 * IDE/PIO restarts are handled by the core layer, but NCQ commands
1345 * need an extra kick from the AHCI HBA.
1346 */
1347 static void ahci_restart(IDEDMA *dma)
1348 {
1349 AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma);
1350 int i;
1351
1352 for (i = 0; i < AHCI_MAX_CMDS; i++) {
1353 NCQTransferState *ncq_tfs = &ad->ncq_tfs[i];
1354 if (ncq_tfs->halt) {
1355 execute_ncq_command(ncq_tfs);
1356 }
1357 }
1358 }
1359
1360 /**
1361 * Called in DMA and PIO R/W chains to read the PRDT.
1362 * Not shared with NCQ pathways.
1363 */
1364 static int32_t ahci_dma_prepare_buf(IDEDMA *dma, int32_t limit)
1365 {
1366 AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma);
1367 IDEState *s = &ad->port.ifs[0];
1368
1369 if (ahci_populate_sglist(ad, &s->sg, ad->cur_cmd,
1370 limit, s->io_buffer_offset) == -1) {
1371 DPRINTF(ad->port_no, "ahci_dma_prepare_buf failed.\n");
1372 return -1;
1373 }
1374 s->io_buffer_size = s->sg.size;
1375
1376 DPRINTF(ad->port_no, "len=%#x\n", s->io_buffer_size);
1377 return s->io_buffer_size;
1378 }
1379
1380 /**
1381 * Updates the command header with a bytes-read value.
1382 * Called via dma_buf_commit, for both DMA and PIO paths.
1383 * sglist destruction is handled within dma_buf_commit.
1384 */
1385 static void ahci_commit_buf(IDEDMA *dma, uint32_t tx_bytes)
1386 {
1387 AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma);
1388
1389 tx_bytes += le32_to_cpu(ad->cur_cmd->status);
1390 ad->cur_cmd->status = cpu_to_le32(tx_bytes);
1391 }
1392
1393 static int ahci_dma_rw_buf(IDEDMA *dma, int is_write)
1394 {
1395 AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma);
1396 IDEState *s = &ad->port.ifs[0];
1397 uint8_t *p = s->io_buffer + s->io_buffer_index;
1398 int l = s->io_buffer_size - s->io_buffer_index;
1399
1400 if (ahci_populate_sglist(ad, &s->sg, ad->cur_cmd, l, s->io_buffer_offset)) {
1401 return 0;
1402 }
1403
1404 if (is_write) {
1405 dma_buf_read(p, l, &s->sg);
1406 } else {
1407 dma_buf_write(p, l, &s->sg);
1408 }
1409
1410 /* free sglist, update byte count */
1411 dma_buf_commit(s, l);
1412
1413 s->io_buffer_index += l;
1414
1415 DPRINTF(ad->port_no, "len=%#x\n", l);
1416
1417 return 1;
1418 }
1419
1420 static void ahci_cmd_done(IDEDMA *dma)
1421 {
1422 AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma);
1423
1424 DPRINTF(ad->port_no, "cmd done\n");
1425
1426 /* update d2h status */
1427 ahci_write_fis_d2h(ad);
1428
1429 if (!ad->check_bh) {
1430 /* maybe we still have something to process, check later */
1431 ad->check_bh = qemu_bh_new(ahci_check_cmd_bh, ad);
1432 qemu_bh_schedule(ad->check_bh);
1433 }
1434 }
1435
1436 static void ahci_irq_set(void *opaque, int n, int level)
1437 {
1438 }
1439
1440 static const IDEDMAOps ahci_dma_ops = {
1441 .start_dma = ahci_start_dma,
1442 .restart = ahci_restart,
1443 .restart_dma = ahci_restart_dma,
1444 .start_transfer = ahci_start_transfer,
1445 .prepare_buf = ahci_dma_prepare_buf,
1446 .commit_buf = ahci_commit_buf,
1447 .rw_buf = ahci_dma_rw_buf,
1448 .cmd_done = ahci_cmd_done,
1449 };
1450
1451 void ahci_init(AHCIState *s, DeviceState *qdev)
1452 {
1453 s->container = qdev;
1454 /* XXX BAR size should be 1k, but that breaks, so bump it to 4k for now */
1455 memory_region_init_io(&s->mem, OBJECT(qdev), &ahci_mem_ops, s,
1456 "ahci", AHCI_MEM_BAR_SIZE);
1457 memory_region_init_io(&s->idp, OBJECT(qdev), &ahci_idp_ops, s,
1458 "ahci-idp", 32);
1459 }
1460
1461 void ahci_realize(AHCIState *s, DeviceState *qdev, AddressSpace *as, int ports)
1462 {
1463 qemu_irq *irqs;
1464 int i;
1465
1466 s->as = as;
1467 s->ports = ports;
1468 s->dev = g_new0(AHCIDevice, ports);
1469 ahci_reg_init(s);
1470 irqs = qemu_allocate_irqs(ahci_irq_set, s, s->ports);
1471 for (i = 0; i < s->ports; i++) {
1472 AHCIDevice *ad = &s->dev[i];
1473
1474 ide_bus_new(&ad->port, sizeof(ad->port), qdev, i, 1);
1475 ide_init2(&ad->port, irqs[i]);
1476
1477 ad->hba = s;
1478 ad->port_no = i;
1479 ad->port.dma = &ad->dma;
1480 ad->port.dma->ops = &ahci_dma_ops;
1481 ide_register_restart_cb(&ad->port);
1482 }
1483 g_free(irqs);
1484 }
1485
1486 void ahci_uninit(AHCIState *s)
1487 {
1488 int i, j;
1489
1490 for (i = 0; i < s->ports; i++) {
1491 AHCIDevice *ad = &s->dev[i];
1492
1493 for (j = 0; j < 2; j++) {
1494 IDEState *s = &ad->port.ifs[j];
1495
1496 ide_exit(s);
1497 }
1498 }
1499
1500 g_free(s->dev);
1501 }
1502
1503 void ahci_reset(AHCIState *s)
1504 {
1505 AHCIPortRegs *pr;
1506 int i;
1507
1508 s->control_regs.irqstatus = 0;
1509 /* AHCI Enable (AE)
1510 * The implementation of this bit is dependent upon the value of the
1511 * CAP.SAM bit. If CAP.SAM is '0', then GHC.AE shall be read-write and
1512 * shall have a reset value of '0'. If CAP.SAM is '1', then AE shall be
1513 * read-only and shall have a reset value of '1'.
1514 *
1515 * We set HOST_CAP_AHCI so we must enable AHCI at reset.
1516 */
1517 s->control_regs.ghc = HOST_CTL_AHCI_EN;
1518
1519 for (i = 0; i < s->ports; i++) {
1520 pr = &s->dev[i].port_regs;
1521 pr->irq_stat = 0;
1522 pr->irq_mask = 0;
1523 pr->scr_ctl = 0;
1524 pr->cmd = PORT_CMD_SPIN_UP | PORT_CMD_POWER_ON;
1525 ahci_reset_port(s, i);
1526 }
1527 }
1528
1529 static const VMStateDescription vmstate_ncq_tfs = {
1530 .name = "ncq state",
1531 .version_id = 1,
1532 .fields = (VMStateField[]) {
1533 VMSTATE_UINT32(sector_count, NCQTransferState),
1534 VMSTATE_UINT64(lba, NCQTransferState),
1535 VMSTATE_UINT8(tag, NCQTransferState),
1536 VMSTATE_UINT8(cmd, NCQTransferState),
1537 VMSTATE_UINT8(slot, NCQTransferState),
1538 VMSTATE_BOOL(used, NCQTransferState),
1539 VMSTATE_BOOL(halt, NCQTransferState),
1540 VMSTATE_END_OF_LIST()
1541 },
1542 };
1543
1544 static const VMStateDescription vmstate_ahci_device = {
1545 .name = "ahci port",
1546 .version_id = 1,
1547 .fields = (VMStateField[]) {
1548 VMSTATE_IDE_BUS(port, AHCIDevice),
1549 VMSTATE_IDE_DRIVE(port.ifs[0], AHCIDevice),
1550 VMSTATE_UINT32(port_state, AHCIDevice),
1551 VMSTATE_UINT32(finished, AHCIDevice),
1552 VMSTATE_UINT32(port_regs.lst_addr, AHCIDevice),
1553 VMSTATE_UINT32(port_regs.lst_addr_hi, AHCIDevice),
1554 VMSTATE_UINT32(port_regs.fis_addr, AHCIDevice),
1555 VMSTATE_UINT32(port_regs.fis_addr_hi, AHCIDevice),
1556 VMSTATE_UINT32(port_regs.irq_stat, AHCIDevice),
1557 VMSTATE_UINT32(port_regs.irq_mask, AHCIDevice),
1558 VMSTATE_UINT32(port_regs.cmd, AHCIDevice),
1559 VMSTATE_UINT32(port_regs.tfdata, AHCIDevice),
1560 VMSTATE_UINT32(port_regs.sig, AHCIDevice),
1561 VMSTATE_UINT32(port_regs.scr_stat, AHCIDevice),
1562 VMSTATE_UINT32(port_regs.scr_ctl, AHCIDevice),
1563 VMSTATE_UINT32(port_regs.scr_err, AHCIDevice),
1564 VMSTATE_UINT32(port_regs.scr_act, AHCIDevice),
1565 VMSTATE_UINT32(port_regs.cmd_issue, AHCIDevice),
1566 VMSTATE_BOOL(done_atapi_packet, AHCIDevice),
1567 VMSTATE_INT32(busy_slot, AHCIDevice),
1568 VMSTATE_BOOL(init_d2h_sent, AHCIDevice),
1569 VMSTATE_STRUCT_ARRAY(ncq_tfs, AHCIDevice, AHCI_MAX_CMDS,
1570 1, vmstate_ncq_tfs, NCQTransferState),
1571 VMSTATE_END_OF_LIST()
1572 },
1573 };
1574
1575 static int ahci_state_post_load(void *opaque, int version_id)
1576 {
1577 int i, j;
1578 struct AHCIDevice *ad;
1579 NCQTransferState *ncq_tfs;
1580 AHCIPortRegs *pr;
1581 AHCIState *s = opaque;
1582
1583 for (i = 0; i < s->ports; i++) {
1584 ad = &s->dev[i];
1585 pr = &ad->port_regs;
1586
1587 if (!(pr->cmd & PORT_CMD_START) && (pr->cmd & PORT_CMD_LIST_ON)) {
1588 error_report("AHCI: DMA engine should be off, but status bit "
1589 "indicates it is still running.");
1590 return -1;
1591 }
1592 if (!(pr->cmd & PORT_CMD_FIS_RX) && (pr->cmd & PORT_CMD_FIS_ON)) {
1593 error_report("AHCI: FIS RX engine should be off, but status bit "
1594 "indicates it is still running.");
1595 return -1;
1596 }
1597
1598 /* After a migrate, the DMA/FIS engines are "off" and
1599 * need to be conditionally restarted */
1600 pr->cmd &= ~(PORT_CMD_LIST_ON | PORT_CMD_FIS_ON);
1601 if (ahci_cond_start_engines(ad) != 0) {
1602 return -1;
1603 }
1604
1605 for (j = 0; j < AHCI_MAX_CMDS; j++) {
1606 ncq_tfs = &ad->ncq_tfs[j];
1607 ncq_tfs->drive = ad;
1608
1609 if (ncq_tfs->used != ncq_tfs->halt) {
1610 return -1;
1611 }
1612 if (!ncq_tfs->halt) {
1613 continue;
1614 }
1615 if (!is_ncq(ncq_tfs->cmd)) {
1616 return -1;
1617 }
1618 if (ncq_tfs->slot != ncq_tfs->tag) {
1619 return -1;
1620 }
1621 /* If ncq_tfs->halt is justly set, the engine should be engaged,
1622 * and the command list buffer should be mapped. */
1623 ncq_tfs->cmdh = get_cmd_header(s, i, ncq_tfs->slot);
1624 if (!ncq_tfs->cmdh) {
1625 return -1;
1626 }
1627 ahci_populate_sglist(ncq_tfs->drive, &ncq_tfs->sglist,
1628 ncq_tfs->cmdh, ncq_tfs->sector_count * 512,
1629 0);
1630 if (ncq_tfs->sector_count != ncq_tfs->sglist.size >> 9) {
1631 return -1;
1632 }
1633 }
1634
1635
1636 /*
1637 * If an error is present, ad->busy_slot will be valid and not -1.
1638 * In this case, an operation is waiting to resume and will re-check
1639 * for additional AHCI commands to execute upon completion.
1640 *
1641 * In the case where no error was present, busy_slot will be -1,
1642 * and we should check to see if there are additional commands waiting.
1643 */
1644 if (ad->busy_slot == -1) {
1645 check_cmd(s, i);
1646 } else {
1647 /* We are in the middle of a command, and may need to access
1648 * the command header in guest memory again. */
1649 if (ad->busy_slot < 0 || ad->busy_slot >= AHCI_MAX_CMDS) {
1650 return -1;
1651 }
1652 ad->cur_cmd = get_cmd_header(s, i, ad->busy_slot);
1653 }
1654 }
1655
1656 return 0;
1657 }
1658
1659 const VMStateDescription vmstate_ahci = {
1660 .name = "ahci",
1661 .version_id = 1,
1662 .post_load = ahci_state_post_load,
1663 .fields = (VMStateField[]) {
1664 VMSTATE_STRUCT_VARRAY_POINTER_INT32(dev, AHCIState, ports,
1665 vmstate_ahci_device, AHCIDevice),
1666 VMSTATE_UINT32(control_regs.cap, AHCIState),
1667 VMSTATE_UINT32(control_regs.ghc, AHCIState),
1668 VMSTATE_UINT32(control_regs.irqstatus, AHCIState),
1669 VMSTATE_UINT32(control_regs.impl, AHCIState),
1670 VMSTATE_UINT32(control_regs.version, AHCIState),
1671 VMSTATE_UINT32(idp_index, AHCIState),
1672 VMSTATE_INT32_EQUAL(ports, AHCIState, NULL),
1673 VMSTATE_END_OF_LIST()
1674 },
1675 };
1676
1677 static const VMStateDescription vmstate_sysbus_ahci = {
1678 .name = "sysbus-ahci",
1679 .fields = (VMStateField[]) {
1680 VMSTATE_AHCI(ahci, SysbusAHCIState),
1681 VMSTATE_END_OF_LIST()
1682 },
1683 };
1684
1685 static void sysbus_ahci_reset(DeviceState *dev)
1686 {
1687 SysbusAHCIState *s = SYSBUS_AHCI(dev);
1688
1689 ahci_reset(&s->ahci);
1690 }
1691
1692 static void sysbus_ahci_init(Object *obj)
1693 {
1694 SysbusAHCIState *s = SYSBUS_AHCI(obj);
1695 SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
1696
1697 ahci_init(&s->ahci, DEVICE(obj));
1698
1699 sysbus_init_mmio(sbd, &s->ahci.mem);
1700 sysbus_init_irq(sbd, &s->ahci.irq);
1701 }
1702
1703 static void sysbus_ahci_realize(DeviceState *dev, Error **errp)
1704 {
1705 SysbusAHCIState *s = SYSBUS_AHCI(dev);
1706
1707 ahci_realize(&s->ahci, dev, &address_space_memory, s->num_ports);
1708 }
1709
1710 static Property sysbus_ahci_properties[] = {
1711 DEFINE_PROP_UINT32("num-ports", SysbusAHCIState, num_ports, 1),
1712 DEFINE_PROP_END_OF_LIST(),
1713 };
1714
1715 static void sysbus_ahci_class_init(ObjectClass *klass, void *data)
1716 {
1717 DeviceClass *dc = DEVICE_CLASS(klass);
1718
1719 dc->realize = sysbus_ahci_realize;
1720 dc->vmsd = &vmstate_sysbus_ahci;
1721 dc->props = sysbus_ahci_properties;
1722 dc->reset = sysbus_ahci_reset;
1723 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1724 }
1725
1726 static const TypeInfo sysbus_ahci_info = {
1727 .name = TYPE_SYSBUS_AHCI,
1728 .parent = TYPE_SYS_BUS_DEVICE,
1729 .instance_size = sizeof(SysbusAHCIState),
1730 .instance_init = sysbus_ahci_init,
1731 .class_init = sysbus_ahci_class_init,
1732 };
1733
1734 #define ALLWINNER_AHCI_BISTAFR ((0xa0 - ALLWINNER_AHCI_MMIO_OFF) / 4)
1735 #define ALLWINNER_AHCI_BISTCR ((0xa4 - ALLWINNER_AHCI_MMIO_OFF) / 4)
1736 #define ALLWINNER_AHCI_BISTFCTR ((0xa8 - ALLWINNER_AHCI_MMIO_OFF) / 4)
1737 #define ALLWINNER_AHCI_BISTSR ((0xac - ALLWINNER_AHCI_MMIO_OFF) / 4)
1738 #define ALLWINNER_AHCI_BISTDECR ((0xb0 - ALLWINNER_AHCI_MMIO_OFF) / 4)
1739 #define ALLWINNER_AHCI_DIAGNR0 ((0xb4 - ALLWINNER_AHCI_MMIO_OFF) / 4)
1740 #define ALLWINNER_AHCI_DIAGNR1 ((0xb8 - ALLWINNER_AHCI_MMIO_OFF) / 4)
1741 #define ALLWINNER_AHCI_OOBR ((0xbc - ALLWINNER_AHCI_MMIO_OFF) / 4)
1742 #define ALLWINNER_AHCI_PHYCS0R ((0xc0 - ALLWINNER_AHCI_MMIO_OFF) / 4)
1743 #define ALLWINNER_AHCI_PHYCS1R ((0xc4 - ALLWINNER_AHCI_MMIO_OFF) / 4)
1744 #define ALLWINNER_AHCI_PHYCS2R ((0xc8 - ALLWINNER_AHCI_MMIO_OFF) / 4)
1745 #define ALLWINNER_AHCI_TIMER1MS ((0xe0 - ALLWINNER_AHCI_MMIO_OFF) / 4)
1746 #define ALLWINNER_AHCI_GPARAM1R ((0xe8 - ALLWINNER_AHCI_MMIO_OFF) / 4)
1747 #define ALLWINNER_AHCI_GPARAM2R ((0xec - ALLWINNER_AHCI_MMIO_OFF) / 4)
1748 #define ALLWINNER_AHCI_PPARAMR ((0xf0 - ALLWINNER_AHCI_MMIO_OFF) / 4)
1749 #define ALLWINNER_AHCI_TESTR ((0xf4 - ALLWINNER_AHCI_MMIO_OFF) / 4)
1750 #define ALLWINNER_AHCI_VERSIONR ((0xf8 - ALLWINNER_AHCI_MMIO_OFF) / 4)
1751 #define ALLWINNER_AHCI_IDR ((0xfc - ALLWINNER_AHCI_MMIO_OFF) / 4)
1752 #define ALLWINNER_AHCI_RWCR ((0xfc - ALLWINNER_AHCI_MMIO_OFF) / 4)
1753
1754 static uint64_t allwinner_ahci_mem_read(void *opaque, hwaddr addr,
1755 unsigned size)
1756 {
1757 AllwinnerAHCIState *a = opaque;
1758 uint64_t val = a->regs[addr/4];
1759
1760 switch (addr / 4) {
1761 case ALLWINNER_AHCI_PHYCS0R:
1762 val |= 0x2 << 28;
1763 break;
1764 case ALLWINNER_AHCI_PHYCS2R:
1765 val &= ~(0x1 << 24);
1766 break;
1767 }
1768 DPRINTF(-1, "addr=0x%" HWADDR_PRIx " val=0x%" PRIx64 ", size=%d\n",
1769 addr, val, size);
1770 return val;
1771 }
1772
1773 static void allwinner_ahci_mem_write(void *opaque, hwaddr addr,
1774 uint64_t val, unsigned size)
1775 {
1776 AllwinnerAHCIState *a = opaque;
1777
1778 DPRINTF(-1, "addr=0x%" HWADDR_PRIx " val=0x%" PRIx64 ", size=%d\n",
1779 addr, val, size);
1780 a->regs[addr/4] = val;
1781 }
1782
1783 static const MemoryRegionOps allwinner_ahci_mem_ops = {
1784 .read = allwinner_ahci_mem_read,
1785 .write = allwinner_ahci_mem_write,
1786 .valid.min_access_size = 4,
1787 .valid.max_access_size = 4,
1788 .endianness = DEVICE_LITTLE_ENDIAN,
1789 };
1790
1791 static void allwinner_ahci_init(Object *obj)
1792 {
1793 SysbusAHCIState *s = SYSBUS_AHCI(obj);
1794 AllwinnerAHCIState *a = ALLWINNER_AHCI(obj);
1795
1796 memory_region_init_io(&a->mmio, OBJECT(obj), &allwinner_ahci_mem_ops, a,
1797 "allwinner-ahci", ALLWINNER_AHCI_MMIO_SIZE);
1798 memory_region_add_subregion(&s->ahci.mem, ALLWINNER_AHCI_MMIO_OFF,
1799 &a->mmio);
1800 }
1801
1802 static const VMStateDescription vmstate_allwinner_ahci = {
1803 .name = "allwinner-ahci",
1804 .version_id = 1,
1805 .minimum_version_id = 1,
1806 .fields = (VMStateField[]) {
1807 VMSTATE_UINT32_ARRAY(regs, AllwinnerAHCIState,
1808 ALLWINNER_AHCI_MMIO_SIZE/4),
1809 VMSTATE_END_OF_LIST()
1810 }
1811 };
1812
1813 static void allwinner_ahci_class_init(ObjectClass *klass, void *data)
1814 {
1815 DeviceClass *dc = DEVICE_CLASS(klass);
1816
1817 dc->vmsd = &vmstate_allwinner_ahci;
1818 }
1819
1820 static const TypeInfo allwinner_ahci_info = {
1821 .name = TYPE_ALLWINNER_AHCI,
1822 .parent = TYPE_SYSBUS_AHCI,
1823 .instance_size = sizeof(AllwinnerAHCIState),
1824 .instance_init = allwinner_ahci_init,
1825 .class_init = allwinner_ahci_class_init,
1826 };
1827
1828 static void sysbus_ahci_register_types(void)
1829 {
1830 type_register_static(&sysbus_ahci_info);
1831 type_register_static(&allwinner_ahci_info);
1832 }
1833
1834 type_init(sysbus_ahci_register_types)
1835
1836 int32_t ahci_get_num_ports(PCIDevice *dev)
1837 {
1838 AHCIPCIState *d = ICH_AHCI(dev);
1839 AHCIState *ahci = &d->ahci;
1840
1841 return ahci->ports;
1842 }
1843
1844 void ahci_ide_create_devs(PCIDevice *dev, DriveInfo **hd)
1845 {
1846 AHCIPCIState *d = ICH_AHCI(dev);
1847 AHCIState *ahci = &d->ahci;
1848 int i;
1849
1850 for (i = 0; i < ahci->ports; i++) {
1851 if (hd[i] == NULL) {
1852 continue;
1853 }
1854 ide_create_drive(&ahci->dev[i].port, 0, hd[i]);
1855 }
1856
1857 }
QEmu