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>
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.
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.
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/>.
25 #include <hw/pci/msi.h>
26 #include <hw/i386/pc.h>
27 #include <hw/pci/pci.h>
28 #include <hw/sysbus.h>
30 #include "monitor/monitor.h"
31 #include "sysemu/block-backend.h"
32 #include "sysemu/dma.h"
34 #include <hw/ide/pci.h>
35 #include <hw/ide/ahci.h>
37 /* #define DEBUG_AHCI */
40 #define DPRINTF(port, fmt, ...) \
41 do { fprintf(stderr, "ahci: %s: [%d] ", __FUNCTION__, port); \
42 fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
44 #define DPRINTF(port, fmt, ...) do {} while(0)
47 static void check_cmd(AHCIState *s, int port);
48 static int handle_cmd(AHCIState *s,int port,int slot);
49 static void ahci_reset_port(AHCIState *s, int port);
50 static void ahci_write_fis_d2h(AHCIDevice *ad, uint8_t *cmd_fis);
51 static void ahci_init_d2h(AHCIDevice *ad);
52 static int ahci_dma_prepare_buf(IDEDMA *dma, int is_write);
53 static void ahci_commit_buf(IDEDMA *dma, uint32_t tx_bytes);
56 static uint32_t ahci_port_read(AHCIState *s, int port, int offset)
60 pr = &s->dev[port].port_regs;
66 case PORT_LST_ADDR_HI:
67 val = pr->lst_addr_hi;
72 case PORT_FIS_ADDR_HI:
73 val = pr->fis_addr_hi;
91 if (s->dev[port].port.ifs[0].blk) {
92 val = SATA_SCR_SSTATUS_DET_DEV_PRESENT_PHY_UP |
93 SATA_SCR_SSTATUS_SPD_GEN1 | SATA_SCR_SSTATUS_IPM_ACTIVE;
95 val = SATA_SCR_SSTATUS_DET_NODEV;
105 pr->scr_act &= ~s->dev[port].finished;
106 s->dev[port].finished = 0;
116 DPRINTF(port, "offset: 0x%x val: 0x%x\n", offset, val);
121 static void ahci_irq_raise(AHCIState *s, AHCIDevice *dev)
123 AHCIPCIState *d = container_of(s, AHCIPCIState, ahci);
125 (PCIDevice *)object_dynamic_cast(OBJECT(d), TYPE_PCI_DEVICE);
127 DPRINTF(0, "raise irq\n");
129 if (pci_dev && msi_enabled(pci_dev)) {
130 msi_notify(pci_dev, 0);
132 qemu_irq_raise(s->irq);
136 static void ahci_irq_lower(AHCIState *s, AHCIDevice *dev)
138 AHCIPCIState *d = container_of(s, AHCIPCIState, ahci);
140 (PCIDevice *)object_dynamic_cast(OBJECT(d), TYPE_PCI_DEVICE);
142 DPRINTF(0, "lower irq\n");
144 if (!pci_dev || !msi_enabled(pci_dev)) {
145 qemu_irq_lower(s->irq);
149 static void ahci_check_irq(AHCIState *s)
153 DPRINTF(-1, "check irq %#x\n", s->control_regs.irqstatus);
155 s->control_regs.irqstatus = 0;
156 for (i = 0; i < s->ports; i++) {
157 AHCIPortRegs *pr = &s->dev[i].port_regs;
158 if (pr->irq_stat & pr->irq_mask) {
159 s->control_regs.irqstatus |= (1 << i);
163 if (s->control_regs.irqstatus &&
164 (s->control_regs.ghc & HOST_CTL_IRQ_EN)) {
165 ahci_irq_raise(s, NULL);
167 ahci_irq_lower(s, NULL);
171 static void ahci_trigger_irq(AHCIState *s, AHCIDevice *d,
174 DPRINTF(d->port_no, "trigger irq %#x -> %x\n",
175 irq_type, d->port_regs.irq_mask & irq_type);
177 d->port_regs.irq_stat |= irq_type;
181 static void map_page(AddressSpace *as, uint8_t **ptr, uint64_t addr,
187 dma_memory_unmap(as, *ptr, len, DMA_DIRECTION_FROM_DEVICE, len);
190 *ptr = dma_memory_map(as, addr, &len, DMA_DIRECTION_FROM_DEVICE);
192 dma_memory_unmap(as, *ptr, len, DMA_DIRECTION_FROM_DEVICE, len);
197 static void ahci_port_write(AHCIState *s, int port, int offset, uint32_t val)
199 AHCIPortRegs *pr = &s->dev[port].port_regs;
201 DPRINTF(port, "offset: 0x%x val: 0x%x\n", offset, val);
205 map_page(s->as, &s->dev[port].lst,
206 ((uint64_t)pr->lst_addr_hi << 32) | pr->lst_addr, 1024);
207 s->dev[port].cur_cmd = NULL;
209 case PORT_LST_ADDR_HI:
210 pr->lst_addr_hi = val;
211 map_page(s->as, &s->dev[port].lst,
212 ((uint64_t)pr->lst_addr_hi << 32) | pr->lst_addr, 1024);
213 s->dev[port].cur_cmd = NULL;
217 map_page(s->as, &s->dev[port].res_fis,
218 ((uint64_t)pr->fis_addr_hi << 32) | pr->fis_addr, 256);
220 case PORT_FIS_ADDR_HI:
221 pr->fis_addr_hi = val;
222 map_page(s->as, &s->dev[port].res_fis,
223 ((uint64_t)pr->fis_addr_hi << 32) | pr->fis_addr, 256);
226 pr->irq_stat &= ~val;
230 pr->irq_mask = val & 0xfdc000ff;
234 pr->cmd = val & ~(PORT_CMD_LIST_ON | PORT_CMD_FIS_ON);
236 if (pr->cmd & PORT_CMD_START) {
237 pr->cmd |= PORT_CMD_LIST_ON;
240 if (pr->cmd & PORT_CMD_FIS_RX) {
241 pr->cmd |= PORT_CMD_FIS_ON;
244 /* XXX usually the FIS would be pending on the bus here and
245 issuing deferred until the OS enables FIS receival.
246 Instead, we only submit it once - which works in most
247 cases, but is a hack. */
248 if ((pr->cmd & PORT_CMD_FIS_ON) &&
249 !s->dev[port].init_d2h_sent) {
250 ahci_init_d2h(&s->dev[port]);
251 s->dev[port].init_d2h_sent = true;
266 if (((pr->scr_ctl & AHCI_SCR_SCTL_DET) == 1) &&
267 ((val & AHCI_SCR_SCTL_DET) == 0)) {
268 ahci_reset_port(s, port);
280 pr->cmd_issue |= val;
288 static uint64_t ahci_mem_read(void *opaque, hwaddr addr,
291 AHCIState *s = opaque;
294 if (addr < AHCI_GENERIC_HOST_CONTROL_REGS_MAX_ADDR) {
297 val = s->control_regs.cap;
300 val = s->control_regs.ghc;
303 val = s->control_regs.irqstatus;
305 case HOST_PORTS_IMPL:
306 val = s->control_regs.impl;
309 val = s->control_regs.version;
313 DPRINTF(-1, "(addr 0x%08X), val 0x%08X\n", (unsigned) addr, val);
314 } else if ((addr >= AHCI_PORT_REGS_START_ADDR) &&
315 (addr < (AHCI_PORT_REGS_START_ADDR +
316 (s->ports * AHCI_PORT_ADDR_OFFSET_LEN)))) {
317 val = ahci_port_read(s, (addr - AHCI_PORT_REGS_START_ADDR) >> 7,
318 addr & AHCI_PORT_ADDR_OFFSET_MASK);
326 static void ahci_mem_write(void *opaque, hwaddr addr,
327 uint64_t val, unsigned size)
329 AHCIState *s = opaque;
331 /* Only aligned reads are allowed on AHCI */
333 fprintf(stderr, "ahci: Mis-aligned write to addr 0x"
334 TARGET_FMT_plx "\n", addr);
338 if (addr < AHCI_GENERIC_HOST_CONTROL_REGS_MAX_ADDR) {
339 DPRINTF(-1, "(addr 0x%08X), val 0x%08"PRIX64"\n", (unsigned) addr, val);
342 case HOST_CAP: /* R/WO, RO */
343 /* FIXME handle R/WO */
345 case HOST_CTL: /* R/W */
346 if (val & HOST_CTL_RESET) {
347 DPRINTF(-1, "HBA Reset\n");
350 s->control_regs.ghc = (val & 0x3) | HOST_CTL_AHCI_EN;
354 case HOST_IRQ_STAT: /* R/WC, RO */
355 s->control_regs.irqstatus &= ~val;
358 case HOST_PORTS_IMPL: /* R/WO, RO */
359 /* FIXME handle R/WO */
361 case HOST_VERSION: /* RO */
362 /* FIXME report write? */
365 DPRINTF(-1, "write to unknown register 0x%x\n", (unsigned)addr);
367 } else if ((addr >= AHCI_PORT_REGS_START_ADDR) &&
368 (addr < (AHCI_PORT_REGS_START_ADDR +
369 (s->ports * AHCI_PORT_ADDR_OFFSET_LEN)))) {
370 ahci_port_write(s, (addr - AHCI_PORT_REGS_START_ADDR) >> 7,
371 addr & AHCI_PORT_ADDR_OFFSET_MASK, val);
376 static const MemoryRegionOps ahci_mem_ops = {
377 .read = ahci_mem_read,
378 .write = ahci_mem_write,
379 .endianness = DEVICE_LITTLE_ENDIAN,
382 static uint64_t ahci_idp_read(void *opaque, hwaddr addr,
385 AHCIState *s = opaque;
387 if (addr == s->idp_offset) {
390 } else if (addr == s->idp_offset + 4) {
391 /* data register - do memory read at location selected by index */
392 return ahci_mem_read(opaque, s->idp_index, size);
398 static void ahci_idp_write(void *opaque, hwaddr addr,
399 uint64_t val, unsigned size)
401 AHCIState *s = opaque;
403 if (addr == s->idp_offset) {
404 /* index register - mask off reserved bits */
405 s->idp_index = (uint32_t)val & ((AHCI_MEM_BAR_SIZE - 1) & ~3);
406 } else if (addr == s->idp_offset + 4) {
407 /* data register - do memory write at location selected by index */
408 ahci_mem_write(opaque, s->idp_index, val, size);
412 static const MemoryRegionOps ahci_idp_ops = {
413 .read = ahci_idp_read,
414 .write = ahci_idp_write,
415 .endianness = DEVICE_LITTLE_ENDIAN,
419 static void ahci_reg_init(AHCIState *s)
423 s->control_regs.cap = (s->ports - 1) |
424 (AHCI_NUM_COMMAND_SLOTS << 8) |
425 (AHCI_SUPPORTED_SPEED_GEN1 << AHCI_SUPPORTED_SPEED) |
426 HOST_CAP_NCQ | HOST_CAP_AHCI;
428 s->control_regs.impl = (1 << s->ports) - 1;
430 s->control_regs.version = AHCI_VERSION_1_0;
432 for (i = 0; i < s->ports; i++) {
433 s->dev[i].port_state = STATE_RUN;
437 static void check_cmd(AHCIState *s, int port)
439 AHCIPortRegs *pr = &s->dev[port].port_regs;
442 if ((pr->cmd & PORT_CMD_START) && pr->cmd_issue) {
443 for (slot = 0; (slot < 32) && pr->cmd_issue; slot++) {
444 if ((pr->cmd_issue & (1U << slot)) &&
445 !handle_cmd(s, port, slot)) {
446 pr->cmd_issue &= ~(1U << slot);
452 static void ahci_check_cmd_bh(void *opaque)
454 AHCIDevice *ad = opaque;
456 qemu_bh_delete(ad->check_bh);
459 if ((ad->busy_slot != -1) &&
460 !(ad->port.ifs[0].status & (BUSY_STAT|DRQ_STAT))) {
462 ad->port_regs.cmd_issue &= ~(1 << ad->busy_slot);
466 check_cmd(ad->hba, ad->port_no);
469 static void ahci_init_d2h(AHCIDevice *ad)
471 uint8_t init_fis[20];
472 IDEState *ide_state = &ad->port.ifs[0];
474 memset(init_fis, 0, sizeof(init_fis));
479 if (ide_state->drive_kind == IDE_CD) {
480 init_fis[5] = ide_state->lcyl;
481 init_fis[6] = ide_state->hcyl;
484 ahci_write_fis_d2h(ad, init_fis);
487 static void ahci_reset_port(AHCIState *s, int port)
489 AHCIDevice *d = &s->dev[port];
490 AHCIPortRegs *pr = &d->port_regs;
491 IDEState *ide_state = &d->port.ifs[0];
494 DPRINTF(port, "reset port\n");
496 ide_bus_reset(&d->port);
497 ide_state->ncq_queues = AHCI_MAX_CMDS;
503 pr->sig = 0xFFFFFFFF;
505 d->init_d2h_sent = false;
507 ide_state = &s->dev[port].port.ifs[0];
508 if (!ide_state->blk) {
512 /* reset ncq queue */
513 for (i = 0; i < AHCI_MAX_CMDS; i++) {
514 NCQTransferState *ncq_tfs = &s->dev[port].ncq_tfs[i];
515 if (!ncq_tfs->used) {
519 if (ncq_tfs->aiocb) {
520 blk_aio_cancel(ncq_tfs->aiocb);
521 ncq_tfs->aiocb = NULL;
524 /* Maybe we just finished the request thanks to blk_aio_cancel() */
525 if (!ncq_tfs->used) {
529 qemu_sglist_destroy(&ncq_tfs->sglist);
533 s->dev[port].port_state = STATE_RUN;
534 if (!ide_state->blk) {
536 ide_state->status = SEEK_STAT | WRERR_STAT;
537 } else if (ide_state->drive_kind == IDE_CD) {
538 pr->sig = SATA_SIGNATURE_CDROM;
539 ide_state->lcyl = 0x14;
540 ide_state->hcyl = 0xeb;
541 DPRINTF(port, "set lcyl = %d\n", ide_state->lcyl);
542 ide_state->status = SEEK_STAT | WRERR_STAT | READY_STAT;
544 pr->sig = SATA_SIGNATURE_DISK;
545 ide_state->status = SEEK_STAT | WRERR_STAT;
548 ide_state->error = 1;
552 static void debug_print_fis(uint8_t *fis, int cmd_len)
557 fprintf(stderr, "fis:");
558 for (i = 0; i < cmd_len; i++) {
559 if ((i & 0xf) == 0) {
560 fprintf(stderr, "\n%02x:",i);
562 fprintf(stderr, "%02x ",fis[i]);
564 fprintf(stderr, "\n");
568 static void ahci_write_fis_sdb(AHCIState *s, int port, uint32_t finished)
570 AHCIDevice *ad = &s->dev[port];
571 AHCIPortRegs *pr = &ad->port_regs;
575 if (!s->dev[port].res_fis ||
576 !(pr->cmd & PORT_CMD_FIS_RX)) {
580 sdb_fis = (SDBFIS *)&ad->res_fis[RES_FIS_SDBFIS];
581 ide_state = &ad->port.ifs[0];
583 sdb_fis->type = 0xA1;
584 /* Interrupt pending & Notification bit */
585 sdb_fis->flags = (ad->hba->control_regs.irqstatus ? (1 << 6) : 0);
586 sdb_fis->status = ide_state->status & 0x77;
587 sdb_fis->error = ide_state->error;
588 /* update SAct field in SDB_FIS */
589 s->dev[port].finished |= finished;
590 sdb_fis->payload = cpu_to_le32(ad->finished);
592 /* Update shadow registers (except BSY 0x80 and DRQ 0x08) */
593 pr->tfdata = (ad->port.ifs[0].error << 8) |
594 (ad->port.ifs[0].status & 0x77) |
597 ahci_trigger_irq(s, ad, PORT_IRQ_SDB_FIS);
600 static void ahci_write_fis_pio(AHCIDevice *ad, uint16_t len)
602 AHCIPortRegs *pr = &ad->port_regs;
603 uint8_t *pio_fis, *cmd_fis;
605 dma_addr_t cmd_len = 0x80;
606 IDEState *s = &ad->port.ifs[0];
608 if (!ad->res_fis || !(pr->cmd & PORT_CMD_FIS_RX)) {
613 tbl_addr = le64_to_cpu(ad->cur_cmd->tbl_addr);
614 cmd_fis = dma_memory_map(ad->hba->as, tbl_addr, &cmd_len,
615 DMA_DIRECTION_TO_DEVICE);
617 if (cmd_fis == NULL) {
618 DPRINTF(ad->port_no, "dma_memory_map failed in ahci_write_fis_pio");
619 ahci_trigger_irq(ad->hba, ad, PORT_IRQ_HBUS_ERR);
623 if (cmd_len != 0x80) {
625 "dma_memory_map mapped too few bytes in ahci_write_fis_pio");
626 dma_memory_unmap(ad->hba->as, cmd_fis, cmd_len,
627 DMA_DIRECTION_TO_DEVICE, cmd_len);
628 ahci_trigger_irq(ad->hba, ad, PORT_IRQ_HBUS_ERR);
632 pio_fis = &ad->res_fis[RES_FIS_PSFIS];
635 pio_fis[1] = (ad->hba->control_regs.irqstatus ? (1 << 6) : 0);
636 pio_fis[2] = s->status;
637 pio_fis[3] = s->error;
639 pio_fis[4] = s->sector;
640 pio_fis[5] = s->lcyl;
641 pio_fis[6] = s->hcyl;
642 pio_fis[7] = s->select;
643 pio_fis[8] = s->hob_sector;
644 pio_fis[9] = s->hob_lcyl;
645 pio_fis[10] = s->hob_hcyl;
647 pio_fis[12] = cmd_fis[12];
648 pio_fis[13] = cmd_fis[13];
650 pio_fis[15] = s->status;
651 pio_fis[16] = len & 255;
652 pio_fis[17] = len >> 8;
656 /* Update shadow registers: */
657 pr->tfdata = (ad->port.ifs[0].error << 8) |
658 ad->port.ifs[0].status;
660 if (pio_fis[2] & ERR_STAT) {
661 ahci_trigger_irq(ad->hba, ad, PORT_IRQ_TF_ERR);
664 ahci_trigger_irq(ad->hba, ad, PORT_IRQ_PIOS_FIS);
666 dma_memory_unmap(ad->hba->as, cmd_fis, cmd_len,
667 DMA_DIRECTION_TO_DEVICE, cmd_len);
670 static void ahci_write_fis_d2h(AHCIDevice *ad, uint8_t *cmd_fis)
672 AHCIPortRegs *pr = &ad->port_regs;
675 dma_addr_t cmd_len = 0x80;
677 IDEState *s = &ad->port.ifs[0];
679 if (!ad->res_fis || !(pr->cmd & PORT_CMD_FIS_RX)) {
685 uint64_t tbl_addr = le64_to_cpu(ad->cur_cmd->tbl_addr);
686 cmd_fis = dma_memory_map(ad->hba->as, tbl_addr, &cmd_len,
687 DMA_DIRECTION_TO_DEVICE);
691 d2h_fis = &ad->res_fis[RES_FIS_RFIS];
694 d2h_fis[1] = (ad->hba->control_regs.irqstatus ? (1 << 6) : 0);
695 d2h_fis[2] = s->status;
696 d2h_fis[3] = s->error;
698 d2h_fis[4] = s->sector;
699 d2h_fis[5] = s->lcyl;
700 d2h_fis[6] = s->hcyl;
701 d2h_fis[7] = s->select;
702 d2h_fis[8] = s->hob_sector;
703 d2h_fis[9] = s->hob_lcyl;
704 d2h_fis[10] = s->hob_hcyl;
706 d2h_fis[12] = cmd_fis[12];
707 d2h_fis[13] = cmd_fis[13];
708 for (i = 14; i < 20; i++) {
712 /* Update shadow registers: */
713 pr->tfdata = (ad->port.ifs[0].error << 8) |
714 ad->port.ifs[0].status;
716 if (d2h_fis[2] & ERR_STAT) {
717 ahci_trigger_irq(ad->hba, ad, PORT_IRQ_TF_ERR);
720 ahci_trigger_irq(ad->hba, ad, PORT_IRQ_D2H_REG_FIS);
723 dma_memory_unmap(ad->hba->as, cmd_fis, cmd_len,
724 DMA_DIRECTION_TO_DEVICE, cmd_len);
728 static int prdt_tbl_entry_size(const AHCI_SG *tbl)
730 return (le32_to_cpu(tbl->flags_size) & AHCI_PRDT_SIZE_MASK) + 1;
733 static int ahci_populate_sglist(AHCIDevice *ad, QEMUSGList *sglist, int offset)
735 AHCICmdHdr *cmd = ad->cur_cmd;
736 uint32_t opts = le32_to_cpu(cmd->opts);
737 uint64_t prdt_addr = le64_to_cpu(cmd->tbl_addr) + 0x80;
738 int sglist_alloc_hint = opts >> AHCI_CMD_HDR_PRDT_LEN;
739 dma_addr_t prdt_len = (sglist_alloc_hint * sizeof(AHCI_SG));
740 dma_addr_t real_prdt_len = prdt_len;
748 IDEBus *bus = &ad->port;
749 BusState *qbus = BUS(bus);
751 if (!sglist_alloc_hint) {
752 DPRINTF(ad->port_no, "no sg list given by guest: 0x%08x\n", opts);
757 if (!(prdt = dma_memory_map(ad->hba->as, prdt_addr, &prdt_len,
758 DMA_DIRECTION_TO_DEVICE))){
759 DPRINTF(ad->port_no, "map failed\n");
763 if (prdt_len < real_prdt_len) {
764 DPRINTF(ad->port_no, "mapped less than expected\n");
769 /* Get entries in the PRDT, init a qemu sglist accordingly */
770 if (sglist_alloc_hint > 0) {
771 AHCI_SG *tbl = (AHCI_SG *)prdt;
773 for (i = 0; i < sglist_alloc_hint; i++) {
774 /* flags_size is zero-based */
775 tbl_entry_size = prdt_tbl_entry_size(&tbl[i]);
776 if (offset <= (sum + tbl_entry_size)) {
778 off_pos = offset - sum;
781 sum += tbl_entry_size;
783 if ((off_idx == -1) || (off_pos < 0) || (off_pos > tbl_entry_size)) {
784 DPRINTF(ad->port_no, "%s: Incorrect offset! "
785 "off_idx: %d, off_pos: %d\n",
786 __func__, off_idx, off_pos);
791 qemu_sglist_init(sglist, qbus->parent, (sglist_alloc_hint - off_idx),
793 qemu_sglist_add(sglist, le64_to_cpu(tbl[off_idx].addr + off_pos),
794 prdt_tbl_entry_size(&tbl[off_idx]) - off_pos);
796 for (i = off_idx + 1; i < sglist_alloc_hint; i++) {
797 /* flags_size is zero-based */
798 qemu_sglist_add(sglist, le64_to_cpu(tbl[i].addr),
799 prdt_tbl_entry_size(&tbl[i]));
804 dma_memory_unmap(ad->hba->as, prdt, prdt_len,
805 DMA_DIRECTION_TO_DEVICE, prdt_len);
809 static void ncq_cb(void *opaque, int ret)
811 NCQTransferState *ncq_tfs = (NCQTransferState *)opaque;
812 IDEState *ide_state = &ncq_tfs->drive->port.ifs[0];
814 if (ret == -ECANCELED) {
817 /* Clear bit for this tag in SActive */
818 ncq_tfs->drive->port_regs.scr_act &= ~(1 << ncq_tfs->tag);
822 ide_state->error = ABRT_ERR;
823 ide_state->status = READY_STAT | ERR_STAT;
824 ncq_tfs->drive->port_regs.scr_err |= (1 << ncq_tfs->tag);
826 ide_state->status = READY_STAT | SEEK_STAT;
829 ahci_write_fis_sdb(ncq_tfs->drive->hba, ncq_tfs->drive->port_no,
830 (1 << ncq_tfs->tag));
832 DPRINTF(ncq_tfs->drive->port_no, "NCQ transfer tag %d finished\n",
835 block_acct_done(blk_get_stats(ncq_tfs->drive->port.ifs[0].blk),
837 qemu_sglist_destroy(&ncq_tfs->sglist);
841 static void process_ncq_command(AHCIState *s, int port, uint8_t *cmd_fis,
844 NCQFrame *ncq_fis = (NCQFrame*)cmd_fis;
845 uint8_t tag = ncq_fis->tag >> 3;
846 NCQTransferState *ncq_tfs = &s->dev[port].ncq_tfs[tag];
849 /* error - already in use */
850 fprintf(stderr, "%s: tag %d already used\n", __FUNCTION__, tag);
855 ncq_tfs->drive = &s->dev[port];
856 ncq_tfs->slot = slot;
857 ncq_tfs->lba = ((uint64_t)ncq_fis->lba5 << 40) |
858 ((uint64_t)ncq_fis->lba4 << 32) |
859 ((uint64_t)ncq_fis->lba3 << 24) |
860 ((uint64_t)ncq_fis->lba2 << 16) |
861 ((uint64_t)ncq_fis->lba1 << 8) |
862 (uint64_t)ncq_fis->lba0;
864 /* Note: We calculate the sector count, but don't currently rely on it.
865 * The total size of the DMA buffer tells us the transfer size instead. */
866 ncq_tfs->sector_count = ((uint16_t)ncq_fis->sector_count_high << 8) |
867 ncq_fis->sector_count_low;
869 DPRINTF(port, "NCQ transfer LBA from %"PRId64" to %"PRId64", "
870 "drive max %"PRId64"\n",
871 ncq_tfs->lba, ncq_tfs->lba + ncq_tfs->sector_count - 2,
872 s->dev[port].port.ifs[0].nb_sectors - 1);
874 ahci_populate_sglist(&s->dev[port], &ncq_tfs->sglist, 0);
877 switch(ncq_fis->command) {
878 case READ_FPDMA_QUEUED:
879 DPRINTF(port, "NCQ reading %d sectors from LBA %"PRId64", "
881 ncq_tfs->sector_count-1, ncq_tfs->lba, ncq_tfs->tag);
883 DPRINTF(port, "tag %d aio read %"PRId64"\n",
884 ncq_tfs->tag, ncq_tfs->lba);
886 dma_acct_start(ncq_tfs->drive->port.ifs[0].blk, &ncq_tfs->acct,
887 &ncq_tfs->sglist, BLOCK_ACCT_READ);
888 ncq_tfs->aiocb = dma_blk_read(ncq_tfs->drive->port.ifs[0].blk,
889 &ncq_tfs->sglist, ncq_tfs->lba,
892 case WRITE_FPDMA_QUEUED:
893 DPRINTF(port, "NCQ writing %d sectors to LBA %"PRId64", tag %d\n",
894 ncq_tfs->sector_count-1, ncq_tfs->lba, ncq_tfs->tag);
896 DPRINTF(port, "tag %d aio write %"PRId64"\n",
897 ncq_tfs->tag, ncq_tfs->lba);
899 dma_acct_start(ncq_tfs->drive->port.ifs[0].blk, &ncq_tfs->acct,
900 &ncq_tfs->sglist, BLOCK_ACCT_WRITE);
901 ncq_tfs->aiocb = dma_blk_write(ncq_tfs->drive->port.ifs[0].blk,
902 &ncq_tfs->sglist, ncq_tfs->lba,
906 DPRINTF(port, "error: tried to process non-NCQ command as NCQ\n");
907 qemu_sglist_destroy(&ncq_tfs->sglist);
912 static int handle_cmd(AHCIState *s, int port, int slot)
921 if (s->dev[port].port.ifs[0].status & (BUSY_STAT|DRQ_STAT)) {
922 /* Engine currently busy, try again later */
923 DPRINTF(port, "engine busy\n");
927 cmd = &((AHCICmdHdr *)s->dev[port].lst)[slot];
929 if (!s->dev[port].lst) {
930 DPRINTF(port, "error: lst not given but cmd handled");
934 /* remember current slot handle for later */
935 s->dev[port].cur_cmd = cmd;
937 opts = le32_to_cpu(cmd->opts);
938 tbl_addr = le64_to_cpu(cmd->tbl_addr);
941 cmd_fis = dma_memory_map(s->as, tbl_addr, &cmd_len,
942 DMA_DIRECTION_FROM_DEVICE);
945 DPRINTF(port, "error: guest passed us an invalid cmd fis\n");
949 /* The device we are working for */
950 ide_state = &s->dev[port].port.ifs[0];
952 if (!ide_state->blk) {
953 DPRINTF(port, "error: guest accessed unused port");
957 debug_print_fis(cmd_fis, 0x90);
958 //debug_print_fis(cmd_fis, (opts & AHCI_CMD_HDR_CMD_FIS_LEN) * 4);
960 switch (cmd_fis[0]) {
961 case SATA_FIS_TYPE_REGISTER_H2D:
964 DPRINTF(port, "unknown command cmd_fis[0]=%02x cmd_fis[1]=%02x "
965 "cmd_fis[2]=%02x\n", cmd_fis[0], cmd_fis[1],
971 switch (cmd_fis[1]) {
972 case SATA_FIS_REG_H2D_UPDATE_COMMAND_REGISTER:
977 DPRINTF(port, "unknown command cmd_fis[0]=%02x cmd_fis[1]=%02x "
978 "cmd_fis[2]=%02x\n", cmd_fis[0], cmd_fis[1],
984 switch (s->dev[port].port_state) {
986 if (cmd_fis[15] & ATA_SRST) {
987 s->dev[port].port_state = STATE_RESET;
991 if (!(cmd_fis[15] & ATA_SRST)) {
992 ahci_reset_port(s, port);
997 if (cmd_fis[1] == SATA_FIS_REG_H2D_UPDATE_COMMAND_REGISTER) {
999 /* Check for NCQ command */
1000 if ((cmd_fis[2] == READ_FPDMA_QUEUED) ||
1001 (cmd_fis[2] == WRITE_FPDMA_QUEUED)) {
1002 process_ncq_command(s, port, cmd_fis, slot);
1006 /* Decompose the FIS */
1007 ide_state->nsector = (int64_t)((cmd_fis[13] << 8) | cmd_fis[12]);
1008 ide_state->feature = cmd_fis[3];
1009 if (!ide_state->nsector) {
1010 ide_state->nsector = 256;
1013 if (ide_state->drive_kind != IDE_CD) {
1015 * We set the sector depending on the sector defined in the FIS.
1016 * Unfortunately, the spec isn't exactly obvious on this one.
1018 * Apparently LBA48 commands set fis bytes 10,9,8,6,5,4 to the
1019 * 48 bit sector number. ATA_CMD_READ_DMA_EXT is an example for
1022 * Non-LBA48 commands however use 7[lower 4 bits],6,5,4 to define a
1023 * 28-bit sector number. ATA_CMD_READ_DMA is an example for such
1026 * Since the spec doesn't explicitly state what each field should
1027 * do, I simply assume non-used fields as reserved and OR everything
1028 * together, independent of the command.
1030 ide_set_sector(ide_state, ((uint64_t)cmd_fis[10] << 40)
1031 | ((uint64_t)cmd_fis[9] << 32)
1032 /* This is used for LBA48 commands */
1033 | ((uint64_t)cmd_fis[8] << 24)
1034 /* This is used for non-LBA48 commands */
1035 | ((uint64_t)(cmd_fis[7] & 0xf) << 24)
1036 | ((uint64_t)cmd_fis[6] << 16)
1037 | ((uint64_t)cmd_fis[5] << 8)
1041 /* Copy the ACMD field (ATAPI packet, if any) from the AHCI command
1042 * table to ide_state->io_buffer
1044 if (opts & AHCI_CMD_ATAPI) {
1045 memcpy(ide_state->io_buffer, &cmd_fis[AHCI_COMMAND_TABLE_ACMD], 0x10);
1046 ide_state->lcyl = 0x14;
1047 ide_state->hcyl = 0xeb;
1048 debug_print_fis(ide_state->io_buffer, 0x10);
1049 ide_state->feature = IDE_FEATURE_DMA;
1050 s->dev[port].done_atapi_packet = false;
1051 /* XXX send PIO setup FIS */
1054 ide_state->error = 0;
1056 /* Reset transferred byte counter */
1059 /* We're ready to process the command in FIS byte 2. */
1060 ide_exec_cmd(&s->dev[port].port, cmd_fis[2]);
1064 dma_memory_unmap(s->as, cmd_fis, cmd_len, DMA_DIRECTION_FROM_DEVICE,
1067 if (s->dev[port].port.ifs[0].status & (BUSY_STAT|DRQ_STAT)) {
1068 /* async command, complete later */
1069 s->dev[port].busy_slot = slot;
1073 /* done handling the command */
1077 /* DMA dev <-> ram */
1078 static void ahci_start_transfer(IDEDMA *dma)
1080 AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma);
1081 IDEState *s = &ad->port.ifs[0];
1082 uint32_t size = (uint32_t)(s->data_end - s->data_ptr);
1083 /* write == ram -> device */
1084 uint32_t opts = le32_to_cpu(ad->cur_cmd->opts);
1085 int is_write = opts & AHCI_CMD_WRITE;
1086 int is_atapi = opts & AHCI_CMD_ATAPI;
1089 if (is_atapi && !ad->done_atapi_packet) {
1090 /* already prepopulated iobuffer */
1091 ad->done_atapi_packet = true;
1095 if (!ahci_populate_sglist(ad, &s->sg, 0)) {
1099 DPRINTF(ad->port_no, "%sing %d bytes on %s w/%s sglist\n",
1100 is_write ? "writ" : "read", size, is_atapi ? "atapi" : "ata",
1101 has_sglist ? "" : "o");
1103 if (has_sglist && size) {
1105 dma_buf_write(s->data_ptr, size, &s->sg);
1107 dma_buf_read(s->data_ptr, size, &s->sg);
1112 /* declare that we processed everything */
1113 s->data_ptr = s->data_end;
1115 /* Update number of transferred bytes, destroy sglist */
1116 ahci_commit_buf(dma, size);
1118 s->end_transfer_func(s);
1120 if (!(s->status & DRQ_STAT)) {
1121 /* done with PIO send/receive */
1122 ahci_write_fis_pio(ad, le32_to_cpu(ad->cur_cmd->status));
1126 static void ahci_start_dma(IDEDMA *dma, IDEState *s,
1127 BlockCompletionFunc *dma_cb)
1130 AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma);
1132 DPRINTF(ad->port_no, "\n");
1133 s->io_buffer_offset = 0;
1138 * Called in DMA R/W chains to read the PRDT, utilizing ahci_populate_sglist.
1139 * Not currently invoked by PIO R/W chains,
1140 * which invoke ahci_populate_sglist via ahci_start_transfer.
1142 static int ahci_dma_prepare_buf(IDEDMA *dma, int is_write)
1144 AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma);
1145 IDEState *s = &ad->port.ifs[0];
1147 ahci_populate_sglist(ad, &s->sg, 0);
1148 s->io_buffer_size = s->sg.size;
1150 DPRINTF(ad->port_no, "len=%#x\n", s->io_buffer_size);
1151 return s->io_buffer_size != 0;
1155 * Destroys the scatter-gather list,
1156 * and updates the command header with a bytes-read value.
1157 * called explicitly via ahci_dma_rw_buf (ATAPI DMA),
1158 * and ahci_start_transfer (PIO R/W),
1159 * and called via callback from ide_dma_cb for DMA R/W paths.
1161 static void ahci_commit_buf(IDEDMA *dma, uint32_t tx_bytes)
1163 AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma);
1164 IDEState *s = &ad->port.ifs[0];
1166 tx_bytes += le32_to_cpu(ad->cur_cmd->status);
1167 ad->cur_cmd->status = cpu_to_le32(tx_bytes);
1169 qemu_sglist_destroy(&s->sg);
1172 static int ahci_dma_rw_buf(IDEDMA *dma, int is_write)
1174 AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma);
1175 IDEState *s = &ad->port.ifs[0];
1176 uint8_t *p = s->io_buffer + s->io_buffer_index;
1177 int l = s->io_buffer_size - s->io_buffer_index;
1179 if (ahci_populate_sglist(ad, &s->sg, s->io_buffer_offset)) {
1184 dma_buf_read(p, l, &s->sg);
1186 dma_buf_write(p, l, &s->sg);
1189 /* free sglist, update byte count */
1190 ahci_commit_buf(dma, l);
1192 s->io_buffer_index += l;
1193 s->io_buffer_offset += l;
1195 DPRINTF(ad->port_no, "len=%#x\n", l);
1200 static int ahci_dma_set_unit(IDEDMA *dma, int unit)
1202 /* only a single unit per link */
1206 static void ahci_cmd_done(IDEDMA *dma)
1208 AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma);
1210 DPRINTF(ad->port_no, "cmd done\n");
1212 /* update d2h status */
1213 ahci_write_fis_d2h(ad, NULL);
1215 if (!ad->check_bh) {
1216 /* maybe we still have something to process, check later */
1217 ad->check_bh = qemu_bh_new(ahci_check_cmd_bh, ad);
1218 qemu_bh_schedule(ad->check_bh);
1222 static void ahci_irq_set(void *opaque, int n, int level)
1226 static void ahci_dma_restart_cb(void *opaque, int running, RunState state)
1230 static const IDEDMAOps ahci_dma_ops = {
1231 .start_dma = ahci_start_dma,
1232 .start_transfer = ahci_start_transfer,
1233 .prepare_buf = ahci_dma_prepare_buf,
1234 .commit_buf = ahci_commit_buf,
1235 .rw_buf = ahci_dma_rw_buf,
1236 .set_unit = ahci_dma_set_unit,
1237 .cmd_done = ahci_cmd_done,
1238 .restart_cb = ahci_dma_restart_cb,
1241 void ahci_init(AHCIState *s, DeviceState *qdev, AddressSpace *as, int ports)
1248 s->dev = g_new0(AHCIDevice, ports);
1250 /* XXX BAR size should be 1k, but that breaks, so bump it to 4k for now */
1251 memory_region_init_io(&s->mem, OBJECT(qdev), &ahci_mem_ops, s,
1252 "ahci", AHCI_MEM_BAR_SIZE);
1253 memory_region_init_io(&s->idp, OBJECT(qdev), &ahci_idp_ops, s,
1256 irqs = qemu_allocate_irqs(ahci_irq_set, s, s->ports);
1258 for (i = 0; i < s->ports; i++) {
1259 AHCIDevice *ad = &s->dev[i];
1261 ide_bus_new(&ad->port, sizeof(ad->port), qdev, i, 1);
1262 ide_init2(&ad->port, irqs[i]);
1266 ad->port.dma = &ad->dma;
1267 ad->port.dma->ops = &ahci_dma_ops;
1271 void ahci_uninit(AHCIState *s)
1276 void ahci_reset(AHCIState *s)
1281 s->control_regs.irqstatus = 0;
1283 * The implementation of this bit is dependent upon the value of the
1284 * CAP.SAM bit. If CAP.SAM is '0', then GHC.AE shall be read-write and
1285 * shall have a reset value of '0'. If CAP.SAM is '1', then AE shall be
1286 * read-only and shall have a reset value of '1'.
1288 * We set HOST_CAP_AHCI so we must enable AHCI at reset.
1290 s->control_regs.ghc = HOST_CTL_AHCI_EN;
1292 for (i = 0; i < s->ports; i++) {
1293 pr = &s->dev[i].port_regs;
1297 pr->cmd = PORT_CMD_SPIN_UP | PORT_CMD_POWER_ON;
1298 ahci_reset_port(s, i);
1302 static const VMStateDescription vmstate_ahci_device = {
1303 .name = "ahci port",
1305 .fields = (VMStateField[]) {
1306 VMSTATE_IDE_BUS(port, AHCIDevice),
1307 VMSTATE_UINT32(port_state, AHCIDevice),
1308 VMSTATE_UINT32(finished, AHCIDevice),
1309 VMSTATE_UINT32(port_regs.lst_addr, AHCIDevice),
1310 VMSTATE_UINT32(port_regs.lst_addr_hi, AHCIDevice),
1311 VMSTATE_UINT32(port_regs.fis_addr, AHCIDevice),
1312 VMSTATE_UINT32(port_regs.fis_addr_hi, AHCIDevice),
1313 VMSTATE_UINT32(port_regs.irq_stat, AHCIDevice),
1314 VMSTATE_UINT32(port_regs.irq_mask, AHCIDevice),
1315 VMSTATE_UINT32(port_regs.cmd, AHCIDevice),
1316 VMSTATE_UINT32(port_regs.tfdata, AHCIDevice),
1317 VMSTATE_UINT32(port_regs.sig, AHCIDevice),
1318 VMSTATE_UINT32(port_regs.scr_stat, AHCIDevice),
1319 VMSTATE_UINT32(port_regs.scr_ctl, AHCIDevice),
1320 VMSTATE_UINT32(port_regs.scr_err, AHCIDevice),
1321 VMSTATE_UINT32(port_regs.scr_act, AHCIDevice),
1322 VMSTATE_UINT32(port_regs.cmd_issue, AHCIDevice),
1323 VMSTATE_BOOL(done_atapi_packet, AHCIDevice),
1324 VMSTATE_INT32(busy_slot, AHCIDevice),
1325 VMSTATE_BOOL(init_d2h_sent, AHCIDevice),
1326 VMSTATE_END_OF_LIST()
1330 static int ahci_state_post_load(void *opaque, int version_id)
1333 struct AHCIDevice *ad;
1334 AHCIState *s = opaque;
1336 for (i = 0; i < s->ports; i++) {
1338 AHCIPortRegs *pr = &ad->port_regs;
1340 map_page(s->as, &ad->lst,
1341 ((uint64_t)pr->lst_addr_hi << 32) | pr->lst_addr, 1024);
1342 map_page(s->as, &ad->res_fis,
1343 ((uint64_t)pr->fis_addr_hi << 32) | pr->fis_addr, 256);
1345 * All pending i/o should be flushed out on a migrate. However,
1346 * we might not have cleared the busy_slot since this is done
1347 * in a bh. Also, issue i/o against any slots that are pending.
1349 if ((ad->busy_slot != -1) &&
1350 !(ad->port.ifs[0].status & (BUSY_STAT|DRQ_STAT))) {
1351 pr->cmd_issue &= ~(1 << ad->busy_slot);
1360 const VMStateDescription vmstate_ahci = {
1363 .post_load = ahci_state_post_load,
1364 .fields = (VMStateField[]) {
1365 VMSTATE_STRUCT_VARRAY_POINTER_INT32(dev, AHCIState, ports,
1366 vmstate_ahci_device, AHCIDevice),
1367 VMSTATE_UINT32(control_regs.cap, AHCIState),
1368 VMSTATE_UINT32(control_regs.ghc, AHCIState),
1369 VMSTATE_UINT32(control_regs.irqstatus, AHCIState),
1370 VMSTATE_UINT32(control_regs.impl, AHCIState),
1371 VMSTATE_UINT32(control_regs.version, AHCIState),
1372 VMSTATE_UINT32(idp_index, AHCIState),
1373 VMSTATE_INT32_EQUAL(ports, AHCIState),
1374 VMSTATE_END_OF_LIST()
1378 #define TYPE_SYSBUS_AHCI "sysbus-ahci"
1379 #define SYSBUS_AHCI(obj) OBJECT_CHECK(SysbusAHCIState, (obj), TYPE_SYSBUS_AHCI)
1381 typedef struct SysbusAHCIState {
1383 SysBusDevice parent_obj;
1390 static const VMStateDescription vmstate_sysbus_ahci = {
1391 .name = "sysbus-ahci",
1392 .unmigratable = 1, /* Still buggy under I/O load */
1393 .fields = (VMStateField[]) {
1394 VMSTATE_AHCI(ahci, SysbusAHCIState),
1395 VMSTATE_END_OF_LIST()
1399 static void sysbus_ahci_reset(DeviceState *dev)
1401 SysbusAHCIState *s = SYSBUS_AHCI(dev);
1403 ahci_reset(&s->ahci);
1406 static void sysbus_ahci_realize(DeviceState *dev, Error **errp)
1408 SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
1409 SysbusAHCIState *s = SYSBUS_AHCI(dev);
1411 ahci_init(&s->ahci, dev, &address_space_memory, s->num_ports);
1413 sysbus_init_mmio(sbd, &s->ahci.mem);
1414 sysbus_init_irq(sbd, &s->ahci.irq);
1417 static Property sysbus_ahci_properties[] = {
1418 DEFINE_PROP_UINT32("num-ports", SysbusAHCIState, num_ports, 1),
1419 DEFINE_PROP_END_OF_LIST(),
1422 static void sysbus_ahci_class_init(ObjectClass *klass, void *data)
1424 DeviceClass *dc = DEVICE_CLASS(klass);
1426 dc->realize = sysbus_ahci_realize;
1427 dc->vmsd = &vmstate_sysbus_ahci;
1428 dc->props = sysbus_ahci_properties;
1429 dc->reset = sysbus_ahci_reset;
1430 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1433 static const TypeInfo sysbus_ahci_info = {
1434 .name = TYPE_SYSBUS_AHCI,
1435 .parent = TYPE_SYS_BUS_DEVICE,
1436 .instance_size = sizeof(SysbusAHCIState),
1437 .class_init = sysbus_ahci_class_init,
1440 static void sysbus_ahci_register_types(void)
1442 type_register_static(&sysbus_ahci_info);
1445 type_init(sysbus_ahci_register_types)
1447 void ahci_ide_create_devs(PCIDevice *dev, DriveInfo **hd)
1449 AHCIPCIState *d = ICH_AHCI(dev);
1450 AHCIState *ahci = &d->ahci;
1453 for (i = 0; i < ahci->ports; i++) {
1454 if (hd[i] == NULL) {
1457 ide_create_drive(&ahci->dev[i].port, 0, hd[i]);