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freebsd-dev/usr.sbin/bhyve/pci_ahci.c
Peter Grehan f1c3dac414 Replace magic numbers in Identify page register 0 with ATA definitions. 
No functional change. Verified with objdump output before/after.

Requested by:	rpokala
Reviewed by:	rpokala
MFC after:	3 weeks
2020-07-31 12:10:28 +00:00

2842 lines
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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2013 Zhixiang Yu <zcore@freebsd.org>
* Copyright (c) 2015-2016 Alexander Motin <mav@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/linker_set.h>
#include <sys/stat.h>
#include <sys/uio.h>
#include <sys/ioctl.h>
#include <sys/disk.h>
#include <sys/ata.h>
#include <sys/endian.h>
#include <machine/vmm_snapshot.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <strings.h>
#include <unistd.h>
#include <assert.h>
#include <pthread.h>
#include <pthread_np.h>
#include <inttypes.h>
#include <md5.h>
#include "bhyverun.h"
#include "pci_emul.h"
#include "ahci.h"
#include "block_if.h"
#define DEF_PORTS 6 /* Intel ICH8 AHCI supports 6 ports */
#define MAX_PORTS 32 /* AHCI supports 32 ports */
#define PxSIG_ATA 0x00000101 /* ATA drive */
#define PxSIG_ATAPI 0xeb140101 /* ATAPI drive */
enum sata_fis_type {
FIS_TYPE_REGH2D = 0x27, /* Register FIS - host to device */
FIS_TYPE_REGD2H = 0x34, /* Register FIS - device to host */
FIS_TYPE_DMAACT = 0x39, /* DMA activate FIS - device to host */
FIS_TYPE_DMASETUP = 0x41, /* DMA setup FIS - bidirectional */
FIS_TYPE_DATA = 0x46, /* Data FIS - bidirectional */
FIS_TYPE_BIST = 0x58, /* BIST activate FIS - bidirectional */
FIS_TYPE_PIOSETUP = 0x5F, /* PIO setup FIS - device to host */
FIS_TYPE_SETDEVBITS = 0xA1, /* Set dev bits FIS - device to host */
};
/*
* SCSI opcodes
*/
#define TEST_UNIT_READY 0x00
#define REQUEST_SENSE 0x03
#define INQUIRY 0x12
#define START_STOP_UNIT 0x1B
#define PREVENT_ALLOW 0x1E
#define READ_CAPACITY 0x25
#define READ_10 0x28
#define POSITION_TO_ELEMENT 0x2B
#define READ_TOC 0x43
#define GET_EVENT_STATUS_NOTIFICATION 0x4A
#define MODE_SENSE_10 0x5A
#define REPORT_LUNS 0xA0
#define READ_12 0xA8
#define READ_CD 0xBE
/*
* SCSI mode page codes
*/
#define MODEPAGE_RW_ERROR_RECOVERY 0x01
#define MODEPAGE_CD_CAPABILITIES 0x2A
/*
* ATA commands
*/
#define ATA_SF_ENAB_SATA_SF 0x10
#define ATA_SATA_SF_AN 0x05
#define ATA_SF_DIS_SATA_SF 0x90
/*
* Debug printf
*/
#ifdef AHCI_DEBUG
static FILE *dbg;
#define DPRINTF(format, arg...) do{fprintf(dbg, format, ##arg);fflush(dbg);}while(0)
#else
#define DPRINTF(format, arg...)
#endif
#define WPRINTF(format, arg...) printf(format, ##arg)
#define AHCI_PORT_IDENT 20 + 1
struct ahci_ioreq {
struct blockif_req io_req;
struct ahci_port *io_pr;
STAILQ_ENTRY(ahci_ioreq) io_flist;
TAILQ_ENTRY(ahci_ioreq) io_blist;
uint8_t *cfis;
uint32_t len;
uint32_t done;
int slot;
int more;
int readop;
};
struct ahci_port {
struct blockif_ctxt *bctx;
struct pci_ahci_softc *pr_sc;
struct ata_params ata_ident;
uint8_t *cmd_lst;
uint8_t *rfis;
int port;
int atapi;
int reset;
int waitforclear;
int mult_sectors;
uint8_t xfermode;
uint8_t err_cfis[20];
uint8_t sense_key;
uint8_t asc;
u_int ccs;
uint32_t pending;
uint32_t clb;
uint32_t clbu;
uint32_t fb;
uint32_t fbu;
uint32_t is;
uint32_t ie;
uint32_t cmd;
uint32_t unused0;
uint32_t tfd;
uint32_t sig;
uint32_t ssts;
uint32_t sctl;
uint32_t serr;
uint32_t sact;
uint32_t ci;
uint32_t sntf;
uint32_t fbs;
/*
* i/o request info
*/
struct ahci_ioreq *ioreq;
int ioqsz;
STAILQ_HEAD(ahci_fhead, ahci_ioreq) iofhd;
TAILQ_HEAD(ahci_bhead, ahci_ioreq) iobhd;
};
struct ahci_cmd_hdr {
uint16_t flags;
uint16_t prdtl;
uint32_t prdbc;
uint64_t ctba;
uint32_t reserved[4];
};
struct ahci_prdt_entry {
uint64_t dba;
uint32_t reserved;
#define DBCMASK 0x3fffff
uint32_t dbc;
};
struct pci_ahci_softc {
struct pci_devinst *asc_pi;
pthread_mutex_t mtx;
int ports;
uint32_t cap;
uint32_t ghc;
uint32_t is;
uint32_t pi;
uint32_t vs;
uint32_t ccc_ctl;
uint32_t ccc_pts;
uint32_t em_loc;
uint32_t em_ctl;
uint32_t cap2;
uint32_t bohc;
uint32_t lintr;
struct ahci_port port[MAX_PORTS];
};
#define ahci_ctx(sc) ((sc)->asc_pi->pi_vmctx)
static void ahci_handle_port(struct ahci_port *p);
static inline void lba_to_msf(uint8_t *buf, int lba)
{
lba += 150;
buf[0] = (lba / 75) / 60;
buf[1] = (lba / 75) % 60;
buf[2] = lba % 75;
}
/*
* Generate HBA interrupts on global IS register write.
*/
static void
ahci_generate_intr(struct pci_ahci_softc *sc, uint32_t mask)
{
struct pci_devinst *pi = sc->asc_pi;
struct ahci_port *p;
int i, nmsg;
uint32_t mmask;
/* Update global IS from PxIS/PxIE. */
for (i = 0; i < sc->ports; i++) {
p = &sc->port[i];
if (p->is & p->ie)
sc->is |= (1 << i);
}
DPRINTF("%s(%08x) %08x", __func__, mask, sc->is);
/* If there is nothing enabled -- clear legacy interrupt and exit. */
if (sc->is == 0 || (sc->ghc & AHCI_GHC_IE) == 0) {
if (sc->lintr) {
pci_lintr_deassert(pi);
sc->lintr = 0;
}
return;
}
/* If there is anything and no MSI -- assert legacy interrupt. */
nmsg = pci_msi_maxmsgnum(pi);
if (nmsg == 0) {
if (!sc->lintr) {
sc->lintr = 1;
pci_lintr_assert(pi);
}
return;
}
/* Assert respective MSIs for ports that were touched. */
for (i = 0; i < nmsg; i++) {
if (sc->ports <= nmsg || i < nmsg - 1)
mmask = 1 << i;
else
mmask = 0xffffffff << i;
if (sc->is & mask && mmask & mask)
pci_generate_msi(pi, i);
}
}
/*
* Generate HBA interrupt on specific port event.
*/
static void
ahci_port_intr(struct ahci_port *p)
{
struct pci_ahci_softc *sc = p->pr_sc;
struct pci_devinst *pi = sc->asc_pi;
int nmsg;
DPRINTF("%s(%d) %08x/%08x %08x", __func__,
p->port, p->is, p->ie, sc->is);
/* If there is nothing enabled -- we are done. */
if ((p->is & p->ie) == 0)
return;
/* In case of non-shared MSI always generate interrupt. */
nmsg = pci_msi_maxmsgnum(pi);
if (sc->ports <= nmsg || p->port < nmsg - 1) {
sc->is |= (1 << p->port);
if ((sc->ghc & AHCI_GHC_IE) == 0)
return;
pci_generate_msi(pi, p->port);
return;
}
/* If IS for this port is already set -- do nothing. */
if (sc->is & (1 << p->port))
return;
sc->is |= (1 << p->port);
/* If interrupts are enabled -- generate one. */
if ((sc->ghc & AHCI_GHC_IE) == 0)
return;
if (nmsg > 0) {
pci_generate_msi(pi, nmsg - 1);
} else if (!sc->lintr) {
sc->lintr = 1;
pci_lintr_assert(pi);
}
}
static void
ahci_write_fis(struct ahci_port *p, enum sata_fis_type ft, uint8_t *fis)
{
int offset, len, irq;
if (p->rfis == NULL || !(p->cmd & AHCI_P_CMD_FRE))
return;
switch (ft) {
case FIS_TYPE_REGD2H:
offset = 0x40;
len = 20;
irq = (fis[1] & (1 << 6)) ? AHCI_P_IX_DHR : 0;
break;
case FIS_TYPE_SETDEVBITS:
offset = 0x58;
len = 8;
irq = (fis[1] & (1 << 6)) ? AHCI_P_IX_SDB : 0;
break;
case FIS_TYPE_PIOSETUP:
offset = 0x20;
len = 20;
irq = (fis[1] & (1 << 6)) ? AHCI_P_IX_PS : 0;
break;
default:
WPRINTF("unsupported fis type %d", ft);
return;
}
if (fis[2] & ATA_S_ERROR) {
p->waitforclear = 1;
irq |= AHCI_P_IX_TFE;
}
memcpy(p->rfis + offset, fis, len);
if (irq) {
if (~p->is & irq) {
p->is |= irq;
ahci_port_intr(p);
}
}
}
static void
ahci_write_fis_piosetup(struct ahci_port *p)
{
uint8_t fis[20];
memset(fis, 0, sizeof(fis));
fis[0] = FIS_TYPE_PIOSETUP;
ahci_write_fis(p, FIS_TYPE_PIOSETUP, fis);
}
static void
ahci_write_fis_sdb(struct ahci_port *p, int slot, uint8_t *cfis, uint32_t tfd)
{
uint8_t fis[8];
uint8_t error;
error = (tfd >> 8) & 0xff;
tfd &= 0x77;
memset(fis, 0, sizeof(fis));
fis[0] = FIS_TYPE_SETDEVBITS;
fis[1] = (1 << 6);
fis[2] = tfd;
fis[3] = error;
if (fis[2] & ATA_S_ERROR) {
p->err_cfis[0] = slot;
p->err_cfis[2] = tfd;
p->err_cfis[3] = error;
memcpy(&p->err_cfis[4], cfis + 4, 16);
} else {
*(uint32_t *)(fis + 4) = (1 << slot);
p->sact &= ~(1 << slot);
}
p->tfd &= ~0x77;
p->tfd |= tfd;
ahci_write_fis(p, FIS_TYPE_SETDEVBITS, fis);
}
static void
ahci_write_fis_d2h(struct ahci_port *p, int slot, uint8_t *cfis, uint32_t tfd)
{
uint8_t fis[20];
uint8_t error;
error = (tfd >> 8) & 0xff;
memset(fis, 0, sizeof(fis));
fis[0] = FIS_TYPE_REGD2H;
fis[1] = (1 << 6);
fis[2] = tfd & 0xff;
fis[3] = error;
fis[4] = cfis[4];
fis[5] = cfis[5];
fis[6] = cfis[6];
fis[7] = cfis[7];
fis[8] = cfis[8];
fis[9] = cfis[9];
fis[10] = cfis[10];
fis[11] = cfis[11];
fis[12] = cfis[12];
fis[13] = cfis[13];
if (fis[2] & ATA_S_ERROR) {
p->err_cfis[0] = 0x80;
p->err_cfis[2] = tfd & 0xff;
p->err_cfis[3] = error;
memcpy(&p->err_cfis[4], cfis + 4, 16);
} else
p->ci &= ~(1 << slot);
p->tfd = tfd;
ahci_write_fis(p, FIS_TYPE_REGD2H, fis);
}
static void
ahci_write_fis_d2h_ncq(struct ahci_port *p, int slot)
{
uint8_t fis[20];
p->tfd = ATA_S_READY | ATA_S_DSC;
memset(fis, 0, sizeof(fis));
fis[0] = FIS_TYPE_REGD2H;
fis[1] = 0; /* No interrupt */
fis[2] = p->tfd; /* Status */
fis[3] = 0; /* No error */
p->ci &= ~(1 << slot);
ahci_write_fis(p, FIS_TYPE_REGD2H, fis);
}
static void
ahci_write_reset_fis_d2h(struct ahci_port *p)
{
uint8_t fis[20];
memset(fis, 0, sizeof(fis));
fis[0] = FIS_TYPE_REGD2H;
fis[3] = 1;
fis[4] = 1;
if (p->atapi) {
fis[5] = 0x14;
fis[6] = 0xeb;
}
fis[12] = 1;
ahci_write_fis(p, FIS_TYPE_REGD2H, fis);
}
static void
ahci_check_stopped(struct ahci_port *p)
{
/*
* If we are no longer processing the command list and nothing
* is in-flight, clear the running bit, the current command
* slot, the command issue and active bits.
*/
if (!(p->cmd & AHCI_P_CMD_ST)) {
if (p->pending == 0) {
p->ccs = 0;
p->cmd &= ~(AHCI_P_CMD_CR | AHCI_P_CMD_CCS_MASK);
p->ci = 0;
p->sact = 0;
p->waitforclear = 0;
}
}
}
static void
ahci_port_stop(struct ahci_port *p)
{
struct ahci_ioreq *aior;
uint8_t *cfis;
int slot;
int error;
assert(pthread_mutex_isowned_np(&p->pr_sc->mtx));
TAILQ_FOREACH(aior, &p->iobhd, io_blist) {
/*
* Try to cancel the outstanding blockif request.
*/
error = blockif_cancel(p->bctx, &aior->io_req);
if (error != 0)
continue;
slot = aior->slot;
cfis = aior->cfis;
if (cfis[2] == ATA_WRITE_FPDMA_QUEUED ||
cfis[2] == ATA_READ_FPDMA_QUEUED ||
cfis[2] == ATA_SEND_FPDMA_QUEUED)
p->sact &= ~(1 << slot); /* NCQ */
else
p->ci &= ~(1 << slot);
/*
* This command is now done.
*/
p->pending &= ~(1 << slot);
/*
* Delete the blockif request from the busy list
*/
TAILQ_REMOVE(&p->iobhd, aior, io_blist);
/*
* Move the blockif request back to the free list
*/
STAILQ_INSERT_TAIL(&p->iofhd, aior, io_flist);
}
ahci_check_stopped(p);
}
static void
ahci_port_reset(struct ahci_port *pr)
{
pr->serr = 0;
pr->sact = 0;
pr->xfermode = ATA_UDMA6;
pr->mult_sectors = 128;
if (!pr->bctx) {
pr->ssts = ATA_SS_DET_NO_DEVICE;
pr->sig = 0xFFFFFFFF;
pr->tfd = 0x7F;
return;
}
pr->ssts = ATA_SS_DET_PHY_ONLINE | ATA_SS_IPM_ACTIVE;
if (pr->sctl & ATA_SC_SPD_MASK)
pr->ssts |= (pr->sctl & ATA_SC_SPD_MASK);
else
pr->ssts |= ATA_SS_SPD_GEN3;
pr->tfd = (1 << 8) | ATA_S_DSC | ATA_S_DMA;
if (!pr->atapi) {
pr->sig = PxSIG_ATA;
pr->tfd |= ATA_S_READY;
} else
pr->sig = PxSIG_ATAPI;
ahci_write_reset_fis_d2h(pr);
}
static void
ahci_reset(struct pci_ahci_softc *sc)
{
int i;
sc->ghc = AHCI_GHC_AE;
sc->is = 0;
if (sc->lintr) {
pci_lintr_deassert(sc->asc_pi);
sc->lintr = 0;
}
for (i = 0; i < sc->ports; i++) {
sc->port[i].ie = 0;
sc->port[i].is = 0;
sc->port[i].cmd = (AHCI_P_CMD_SUD | AHCI_P_CMD_POD);
if (sc->port[i].bctx)
sc->port[i].cmd |= AHCI_P_CMD_CPS;
sc->port[i].sctl = 0;
ahci_port_reset(&sc->port[i]);
}
}
static void
ata_string(uint8_t *dest, const char *src, int len)
{
int i;
for (i = 0; i < len; i++) {
if (*src)
dest[i ^ 1] = *src++;
else
dest[i ^ 1] = ' ';
}
}
static void
atapi_string(uint8_t *dest, const char *src, int len)
{
int i;
for (i = 0; i < len; i++) {
if (*src)
dest[i] = *src++;
else
dest[i] = ' ';
}
}
/*
* Build up the iovec based on the PRDT, 'done' and 'len'.
*/
static void
ahci_build_iov(struct ahci_port *p, struct ahci_ioreq *aior,
struct ahci_prdt_entry *prdt, uint16_t prdtl)
{
struct blockif_req *breq = &aior->io_req;
int i, j, skip, todo, left, extra;
uint32_t dbcsz;
/* Copy part of PRDT between 'done' and 'len' bytes into the iov. */
skip = aior->done;
left = aior->len - aior->done;
todo = 0;
for (i = 0, j = 0; i < prdtl && j < BLOCKIF_IOV_MAX && left > 0;
i++, prdt++) {
dbcsz = (prdt->dbc & DBCMASK) + 1;
/* Skip already done part of the PRDT */
if (dbcsz <= skip) {
skip -= dbcsz;
continue;
}
dbcsz -= skip;
if (dbcsz > left)
dbcsz = left;
breq->br_iov[j].iov_base = paddr_guest2host(ahci_ctx(p->pr_sc),
prdt->dba + skip, dbcsz);
breq->br_iov[j].iov_len = dbcsz;
todo += dbcsz;
left -= dbcsz;
skip = 0;
j++;
}
/* If we got limited by IOV length, round I/O down to sector size. */
if (j == BLOCKIF_IOV_MAX) {
extra = todo % blockif_sectsz(p->bctx);
todo -= extra;
assert(todo > 0);
while (extra > 0) {
if (breq->br_iov[j - 1].iov_len > extra) {
breq->br_iov[j - 1].iov_len -= extra;
break;
}
extra -= breq->br_iov[j - 1].iov_len;
j--;
}
}
breq->br_iovcnt = j;
breq->br_resid = todo;
aior->done += todo;
aior->more = (aior->done < aior->len && i < prdtl);
}
static void
ahci_handle_rw(struct ahci_port *p, int slot, uint8_t *cfis, uint32_t done)
{
struct ahci_ioreq *aior;
struct blockif_req *breq;
struct ahci_prdt_entry *prdt;
struct ahci_cmd_hdr *hdr;
uint64_t lba;
uint32_t len;
int err, first, ncq, readop;
prdt = (struct ahci_prdt_entry *)(cfis + 0x80);
hdr = (struct ahci_cmd_hdr *)(p->cmd_lst + slot * AHCI_CL_SIZE);
ncq = 0;
readop = 1;
first = (done == 0);
if (cfis[2] == ATA_WRITE || cfis[2] == ATA_WRITE48 ||
cfis[2] == ATA_WRITE_MUL || cfis[2] == ATA_WRITE_MUL48 ||
cfis[2] == ATA_WRITE_DMA || cfis[2] == ATA_WRITE_DMA48 ||
cfis[2] == ATA_WRITE_FPDMA_QUEUED)
readop = 0;
if (cfis[2] == ATA_WRITE_FPDMA_QUEUED ||
cfis[2] == ATA_READ_FPDMA_QUEUED) {
lba = ((uint64_t)cfis[10] << 40) |
((uint64_t)cfis[9] << 32) |
((uint64_t)cfis[8] << 24) |
((uint64_t)cfis[6] << 16) |
((uint64_t)cfis[5] << 8) |
cfis[4];
len = cfis[11] << 8 | cfis[3];
if (!len)
len = 65536;
ncq = 1;
} else if (cfis[2] == ATA_READ48 || cfis[2] == ATA_WRITE48 ||
cfis[2] == ATA_READ_MUL48 || cfis[2] == ATA_WRITE_MUL48 ||
cfis[2] == ATA_READ_DMA48 || cfis[2] == ATA_WRITE_DMA48) {
lba = ((uint64_t)cfis[10] << 40) |
((uint64_t)cfis[9] << 32) |
((uint64_t)cfis[8] << 24) |
((uint64_t)cfis[6] << 16) |
((uint64_t)cfis[5] << 8) |
cfis[4];
len = cfis[13] << 8 | cfis[12];
if (!len)
len = 65536;
} else {
lba = ((cfis[7] & 0xf) << 24) | (cfis[6] << 16) |
(cfis[5] << 8) | cfis[4];
len = cfis[12];
if (!len)
len = 256;
}
lba *= blockif_sectsz(p->bctx);
len *= blockif_sectsz(p->bctx);
/* Pull request off free list */
aior = STAILQ_FIRST(&p->iofhd);
assert(aior != NULL);
STAILQ_REMOVE_HEAD(&p->iofhd, io_flist);
aior->cfis = cfis;
aior->slot = slot;
aior->len = len;
aior->done = done;
aior->readop = readop;
breq = &aior->io_req;
breq->br_offset = lba + done;
ahci_build_iov(p, aior, prdt, hdr->prdtl);
/* Mark this command in-flight. */
p->pending |= 1 << slot;
/* Stuff request onto busy list. */
TAILQ_INSERT_HEAD(&p->iobhd, aior, io_blist);
if (ncq && first)
ahci_write_fis_d2h_ncq(p, slot);
if (readop)
err = blockif_read(p->bctx, breq);
else
err = blockif_write(p->bctx, breq);
assert(err == 0);
}
static void
ahci_handle_flush(struct ahci_port *p, int slot, uint8_t *cfis)
{
struct ahci_ioreq *aior;
struct blockif_req *breq;
int err;
/*
* Pull request off free list
*/
aior = STAILQ_FIRST(&p->iofhd);
assert(aior != NULL);
STAILQ_REMOVE_HEAD(&p->iofhd, io_flist);
aior->cfis = cfis;
aior->slot = slot;
aior->len = 0;
aior->done = 0;
aior->more = 0;
breq = &aior->io_req;
/*
* Mark this command in-flight.
*/
p->pending |= 1 << slot;
/*
* Stuff request onto busy list
*/
TAILQ_INSERT_HEAD(&p->iobhd, aior, io_blist);
err = blockif_flush(p->bctx, breq);
assert(err == 0);
}
static inline void
read_prdt(struct ahci_port *p, int slot, uint8_t *cfis,
void *buf, int size)
{
struct ahci_cmd_hdr *hdr;
struct ahci_prdt_entry *prdt;
void *to;
int i, len;
hdr = (struct ahci_cmd_hdr *)(p->cmd_lst + slot * AHCI_CL_SIZE);
len = size;
to = buf;
prdt = (struct ahci_prdt_entry *)(cfis + 0x80);
for (i = 0; i < hdr->prdtl && len; i++) {
uint8_t *ptr;
uint32_t dbcsz;
int sublen;
dbcsz = (prdt->dbc & DBCMASK) + 1;
ptr = paddr_guest2host(ahci_ctx(p->pr_sc), prdt->dba, dbcsz);
sublen = MIN(len, dbcsz);
memcpy(to, ptr, sublen);
len -= sublen;
to += sublen;
prdt++;
}
}
static void
ahci_handle_dsm_trim(struct ahci_port *p, int slot, uint8_t *cfis, uint32_t done)
{
struct ahci_ioreq *aior;
struct blockif_req *breq;
uint8_t *entry;
uint64_t elba;
uint32_t len, elen;
int err, first, ncq;
uint8_t buf[512];
first = (done == 0);
if (cfis[2] == ATA_DATA_SET_MANAGEMENT) {
len = (uint16_t)cfis[13] << 8 | cfis[12];
len *= 512;
ncq = 0;
} else { /* ATA_SEND_FPDMA_QUEUED */
len = (uint16_t)cfis[11] << 8 | cfis[3];
len *= 512;
ncq = 1;
}
read_prdt(p, slot, cfis, buf, sizeof(buf));
next:
entry = &buf[done];
elba = ((uint64_t)entry[5] << 40) |
((uint64_t)entry[4] << 32) |
((uint64_t)entry[3] << 24) |
((uint64_t)entry[2] << 16) |
((uint64_t)entry[1] << 8) |
entry[0];
elen = (uint16_t)entry[7] << 8 | entry[6];
done += 8;
if (elen == 0) {
if (done >= len) {
if (ncq) {
if (first)
ahci_write_fis_d2h_ncq(p, slot);
ahci_write_fis_sdb(p, slot, cfis,
ATA_S_READY | ATA_S_DSC);
} else {
ahci_write_fis_d2h(p, slot, cfis,
ATA_S_READY | ATA_S_DSC);
}
p->pending &= ~(1 << slot);
ahci_check_stopped(p);
if (!first)
ahci_handle_port(p);
return;
}
goto next;
}
/*
* Pull request off free list
*/
aior = STAILQ_FIRST(&p->iofhd);
assert(aior != NULL);
STAILQ_REMOVE_HEAD(&p->iofhd, io_flist);
aior->cfis = cfis;
aior->slot = slot;
aior->len = len;
aior->done = done;
aior->more = (len != done);
breq = &aior->io_req;
breq->br_offset = elba * blockif_sectsz(p->bctx);
breq->br_resid = elen * blockif_sectsz(p->bctx);
/*
* Mark this command in-flight.
*/
p->pending |= 1 << slot;
/*
* Stuff request onto busy list
*/
TAILQ_INSERT_HEAD(&p->iobhd, aior, io_blist);
if (ncq && first)
ahci_write_fis_d2h_ncq(p, slot);
err = blockif_delete(p->bctx, breq);
assert(err == 0);
}
static inline void
write_prdt(struct ahci_port *p, int slot, uint8_t *cfis,
void *buf, int size)
{
struct ahci_cmd_hdr *hdr;
struct ahci_prdt_entry *prdt;
void *from;
int i, len;
hdr = (struct ahci_cmd_hdr *)(p->cmd_lst + slot * AHCI_CL_SIZE);
len = size;
from = buf;
prdt = (struct ahci_prdt_entry *)(cfis + 0x80);
for (i = 0; i < hdr->prdtl && len; i++) {
uint8_t *ptr;
uint32_t dbcsz;
int sublen;
dbcsz = (prdt->dbc & DBCMASK) + 1;
ptr = paddr_guest2host(ahci_ctx(p->pr_sc), prdt->dba, dbcsz);
sublen = MIN(len, dbcsz);
memcpy(ptr, from, sublen);
len -= sublen;
from += sublen;
prdt++;
}
hdr->prdbc = size - len;
}
static void
ahci_checksum(uint8_t *buf, int size)
{
int i;
uint8_t sum = 0;
for (i = 0; i < size - 1; i++)
sum += buf[i];
buf[size - 1] = 0x100 - sum;
}
static void
ahci_handle_read_log(struct ahci_port *p, int slot, uint8_t *cfis)
{
struct ahci_cmd_hdr *hdr;
uint32_t buf[128];
uint8_t *buf8 = (uint8_t *)buf;
uint16_t *buf16 = (uint16_t *)buf;
hdr = (struct ahci_cmd_hdr *)(p->cmd_lst + slot * AHCI_CL_SIZE);
if (p->atapi || hdr->prdtl == 0 || cfis[5] != 0 ||
cfis[9] != 0 || cfis[12] != 1 || cfis[13] != 0) {
ahci_write_fis_d2h(p, slot, cfis,
(ATA_E_ABORT << 8) | ATA_S_READY | ATA_S_ERROR);
return;
}
memset(buf, 0, sizeof(buf));
if (cfis[4] == 0x00) { /* Log directory */
buf16[0x00] = 1; /* Version -- 1 */
buf16[0x10] = 1; /* NCQ Command Error Log -- 1 page */
buf16[0x13] = 1; /* SATA NCQ Send and Receive Log -- 1 page */
} else if (cfis[4] == 0x10) { /* NCQ Command Error Log */
memcpy(buf8, p->err_cfis, sizeof(p->err_cfis));
ahci_checksum(buf8, sizeof(buf));
} else if (cfis[4] == 0x13) { /* SATA NCQ Send and Receive Log */
if (blockif_candelete(p->bctx) && !blockif_is_ro(p->bctx)) {
buf[0x00] = 1; /* SFQ DSM supported */
buf[0x01] = 1; /* SFQ DSM TRIM supported */
}
} else {
ahci_write_fis_d2h(p, slot, cfis,
(ATA_E_ABORT << 8) | ATA_S_READY | ATA_S_ERROR);
return;
}
if (cfis[2] == ATA_READ_LOG_EXT)
ahci_write_fis_piosetup(p);
write_prdt(p, slot, cfis, (void *)buf, sizeof(buf));
ahci_write_fis_d2h(p, slot, cfis, ATA_S_DSC | ATA_S_READY);
}
static void
handle_identify(struct ahci_port *p, int slot, uint8_t *cfis)
{
struct ahci_cmd_hdr *hdr;
hdr = (struct ahci_cmd_hdr *)(p->cmd_lst + slot * AHCI_CL_SIZE);
if (p->atapi || hdr->prdtl == 0) {
ahci_write_fis_d2h(p, slot, cfis,
(ATA_E_ABORT << 8) | ATA_S_READY | ATA_S_ERROR);
} else {
ahci_write_fis_piosetup(p);
write_prdt(p, slot, cfis, (void*)&p->ata_ident, sizeof(struct ata_params));
ahci_write_fis_d2h(p, slot, cfis, ATA_S_DSC | ATA_S_READY);
}
}
static void
ata_identify_init(struct ahci_port* p, int atapi)
{
struct ata_params* ata_ident = &p->ata_ident;
if (atapi) {
ata_ident->config = ATA_PROTO_ATAPI | ATA_ATAPI_TYPE_CDROM |
ATA_ATAPI_REMOVABLE | ATA_DRQ_FAST;
ata_ident->capabilities1 = ATA_SUPPORT_LBA |
ATA_SUPPORT_DMA;
ata_ident->capabilities2 = (1 << 14 | 1);
ata_ident->atavalid = ATA_FLAG_54_58 | ATA_FLAG_64_70;
ata_ident->obsolete62 = 0x3f;
ata_ident->mwdmamodes = 7;
if (p->xfermode & ATA_WDMA0)
ata_ident->mwdmamodes |= (1 << ((p->xfermode & 7) + 8));
ata_ident->apiomodes = 3;
ata_ident->mwdmamin = 0x0078;
ata_ident->mwdmarec = 0x0078;
ata_ident->pioblind = 0x0078;
ata_ident->pioiordy = 0x0078;
ata_ident->satacapabilities = (ATA_SATA_GEN1 | ATA_SATA_GEN2 | ATA_SATA_GEN3);
ata_ident->satacapabilities2 = ((p->ssts & ATA_SS_SPD_MASK) >> 3);
ata_ident->satasupport = ATA_SUPPORT_NCQ_STREAM;
ata_ident->version_major = 0x3f0;
ata_ident->support.command1 = (ATA_SUPPORT_POWERMGT | ATA_SUPPORT_PACKET |
ATA_SUPPORT_RESET | ATA_SUPPORT_NOP);
ata_ident->support.command2 = (1 << 14);
ata_ident->support.extension = (1 << 14);
ata_ident->enabled.command1 = (ATA_SUPPORT_POWERMGT | ATA_SUPPORT_PACKET |
ATA_SUPPORT_RESET | ATA_SUPPORT_NOP);
ata_ident->enabled.extension = (1 << 14);
ata_ident->udmamodes = 0x7f;
if (p->xfermode & ATA_UDMA0)
ata_ident->udmamodes |= (1 << ((p->xfermode & 7) + 8));
ata_ident->transport_major = 0x1020;
ata_ident->integrity = 0x00a5;
} else {
uint64_t sectors;
int sectsz, psectsz, psectoff, candelete, ro;
uint16_t cyl;
uint8_t sech, heads;
ro = blockif_is_ro(p->bctx);
candelete = blockif_candelete(p->bctx);
sectsz = blockif_sectsz(p->bctx);
sectors = blockif_size(p->bctx) / sectsz;
blockif_chs(p->bctx, &cyl, &heads, &sech);
blockif_psectsz(p->bctx, &psectsz, &psectoff);
ata_ident->config = ATA_DRQ_FAST;
ata_ident->cylinders = cyl;
ata_ident->heads = heads;
ata_ident->sectors = sech;
ata_ident->sectors_intr = (0x8000 | 128);
ata_ident->tcg = 0;
ata_ident->capabilities1 = ATA_SUPPORT_DMA |
ATA_SUPPORT_LBA | ATA_SUPPORT_IORDY;
ata_ident->capabilities2 = (1 << 14);
ata_ident->atavalid = ATA_FLAG_54_58 |
ATA_FLAG_64_70;
if (p->mult_sectors)
ata_ident->multi = (ATA_MULTI_VALID | p->mult_sectors);
if (sectors <= 0x0fffffff) {
ata_ident->lba_size_1 = sectors;
ata_ident->lba_size_2 = (sectors >> 16);
} else {
ata_ident->lba_size_1 = 0xffff;
ata_ident->lba_size_2 = 0x0fff;
}
ata_ident->mwdmamodes = 0x7;
if (p->xfermode & ATA_WDMA0)
ata_ident->mwdmamodes |= (1 << ((p->xfermode & 7) + 8));
ata_ident->apiomodes = 0x3;
ata_ident->mwdmamin = 0x0078;
ata_ident->mwdmarec = 0x0078;
ata_ident->pioblind = 0x0078;
ata_ident->pioiordy = 0x0078;
ata_ident->support3 = 0;
ata_ident->queue = 31;
ata_ident->satacapabilities = (ATA_SATA_GEN1 | ATA_SATA_GEN2 | ATA_SATA_GEN3 |
ATA_SUPPORT_NCQ);
ata_ident->satacapabilities2 = (ATA_SUPPORT_RCVSND_FPDMA_QUEUED |
(p->ssts & ATA_SS_SPD_MASK) >> 3);
ata_ident->version_major = 0x3f0;
ata_ident->version_minor = 0x28;
ata_ident->support.command1 = (ATA_SUPPORT_POWERMGT | ATA_SUPPORT_WRITECACHE |
ATA_SUPPORT_LOOKAHEAD | ATA_SUPPORT_NOP);
ata_ident->support.command2 = (ATA_SUPPORT_ADDRESS48 | ATA_SUPPORT_FLUSHCACHE |
ATA_SUPPORT_FLUSHCACHE48 | 1 << 14);
ata_ident->support.extension = (1 << 14);
ata_ident->enabled.command1 = (ATA_SUPPORT_POWERMGT | ATA_SUPPORT_WRITECACHE |
ATA_SUPPORT_LOOKAHEAD | ATA_SUPPORT_NOP);
ata_ident->enabled.command2 = (ATA_SUPPORT_ADDRESS48 | ATA_SUPPORT_FLUSHCACHE |
ATA_SUPPORT_FLUSHCACHE48 | 1 << 15);
ata_ident->enabled.extension = (1 << 14);
ata_ident->udmamodes = 0x7f;
if (p->xfermode & ATA_UDMA0)
ata_ident->udmamodes |= (1 << ((p->xfermode & 7) + 8));
ata_ident->lba_size48_1 = sectors;
ata_ident->lba_size48_2 = (sectors >> 16);
ata_ident->lba_size48_3 = (sectors >> 32);
ata_ident->lba_size48_4 = (sectors >> 48);
if (candelete && !ro) {
ata_ident->support3 |= ATA_SUPPORT_RZAT | ATA_SUPPORT_DRAT;
ata_ident->max_dsm_blocks = 1;
ata_ident->support_dsm = ATA_SUPPORT_DSM_TRIM;
}
ata_ident->pss = ATA_PSS_VALID_VALUE;
ata_ident->lsalign = 0x4000;
if (psectsz > sectsz) {
ata_ident->pss |= ATA_PSS_MULTLS;
ata_ident->pss |= ffsl(psectsz / sectsz) - 1;
ata_ident->lsalign |= (psectoff / sectsz);
}
if (sectsz > 512) {
ata_ident->pss |= ATA_PSS_LSSABOVE512;
ata_ident->lss_1 = sectsz / 2;
ata_ident->lss_2 = ((sectsz / 2) >> 16);
}
ata_ident->support2 = (ATA_SUPPORT_RWLOGDMAEXT | 1 << 14);
ata_ident->enabled2 = (ATA_SUPPORT_RWLOGDMAEXT | 1 << 14);
ata_ident->transport_major = 0x1020;
ata_ident->integrity = 0x00a5;
}
ahci_checksum((uint8_t*)ata_ident, sizeof(struct ata_params));
}
static void
handle_atapi_identify(struct ahci_port *p, int slot, uint8_t *cfis)
{
if (!p->atapi) {
ahci_write_fis_d2h(p, slot, cfis,
(ATA_E_ABORT << 8) | ATA_S_READY | ATA_S_ERROR);
} else {
ahci_write_fis_piosetup(p);
write_prdt(p, slot, cfis, (void *)&p->ata_ident, sizeof(struct ata_params));
ahci_write_fis_d2h(p, slot, cfis, ATA_S_DSC | ATA_S_READY);
}
}
static void
atapi_inquiry(struct ahci_port *p, int slot, uint8_t *cfis)
{
uint8_t buf[36];
uint8_t *acmd;
int len;
uint32_t tfd;
acmd = cfis + 0x40;
if (acmd[1] & 1) { /* VPD */
if (acmd[2] == 0) { /* Supported VPD pages */
buf[0] = 0x05;
buf[1] = 0;
buf[2] = 0;
buf[3] = 1;
buf[4] = 0;
len = 4 + buf[3];
} else {
p->sense_key = ATA_SENSE_ILLEGAL_REQUEST;
p->asc = 0x24;
tfd = (p->sense_key << 12) | ATA_S_READY | ATA_S_ERROR;
cfis[4] = (cfis[4] & ~7) | ATA_I_CMD | ATA_I_IN;
ahci_write_fis_d2h(p, slot, cfis, tfd);
return;
}
} else {
buf[0] = 0x05;
buf[1] = 0x80;
buf[2] = 0x00;
buf[3] = 0x21;
buf[4] = 31;
buf[5] = 0;
buf[6] = 0;
buf[7] = 0;
atapi_string(buf + 8, "BHYVE", 8);
atapi_string(buf + 16, "BHYVE DVD-ROM", 16);
atapi_string(buf + 32, "001", 4);
len = sizeof(buf);
}
if (len > acmd[4])
len = acmd[4];
cfis[4] = (cfis[4] & ~7) | ATA_I_CMD | ATA_I_IN;
write_prdt(p, slot, cfis, buf, len);
ahci_write_fis_d2h(p, slot, cfis, ATA_S_READY | ATA_S_DSC);
}
static void
atapi_read_capacity(struct ahci_port *p, int slot, uint8_t *cfis)
{
uint8_t buf[8];
uint64_t sectors;
sectors = blockif_size(p->bctx) / 2048;
be32enc(buf, sectors - 1);
be32enc(buf + 4, 2048);
cfis[4] = (cfis[4] & ~7) | ATA_I_CMD | ATA_I_IN;
write_prdt(p, slot, cfis, buf, sizeof(buf));
ahci_write_fis_d2h(p, slot, cfis, ATA_S_READY | ATA_S_DSC);
}
static void
atapi_read_toc(struct ahci_port *p, int slot, uint8_t *cfis)
{
uint8_t *acmd;
uint8_t format;
int len;
acmd = cfis + 0x40;
len = be16dec(acmd + 7);
format = acmd[9] >> 6;
switch (format) {
case 0:
{
int msf, size;
uint64_t sectors;
uint8_t start_track, buf[20], *bp;
msf = (acmd[1] >> 1) & 1;
start_track = acmd[6];
if (start_track > 1 && start_track != 0xaa) {
uint32_t tfd;
p->sense_key = ATA_SENSE_ILLEGAL_REQUEST;
p->asc = 0x24;
tfd = (p->sense_key << 12) | ATA_S_READY | ATA_S_ERROR;
cfis[4] = (cfis[4] & ~7) | ATA_I_CMD | ATA_I_IN;
ahci_write_fis_d2h(p, slot, cfis, tfd);
return;
}
bp = buf + 2;
*bp++ = 1;
*bp++ = 1;
if (start_track <= 1) {
*bp++ = 0;
*bp++ = 0x14;
*bp++ = 1;
*bp++ = 0;
if (msf) {
*bp++ = 0;
lba_to_msf(bp, 0);
bp += 3;
} else {
*bp++ = 0;
*bp++ = 0;
*bp++ = 0;
*bp++ = 0;
}
}
*bp++ = 0;
*bp++ = 0x14;
*bp++ = 0xaa;
*bp++ = 0;
sectors = blockif_size(p->bctx) / blockif_sectsz(p->bctx);
sectors >>= 2;
if (msf) {
*bp++ = 0;
lba_to_msf(bp, sectors);
bp += 3;
} else {
be32enc(bp, sectors);
bp += 4;
}
size = bp - buf;
be16enc(buf, size - 2);
if (len > size)
len = size;
write_prdt(p, slot, cfis, buf, len);
cfis[4] = (cfis[4] & ~7) | ATA_I_CMD | ATA_I_IN;
ahci_write_fis_d2h(p, slot, cfis, ATA_S_READY | ATA_S_DSC);
break;
}
case 1:
{
uint8_t buf[12];
memset(buf, 0, sizeof(buf));
buf[1] = 0xa;
buf[2] = 0x1;
buf[3] = 0x1;
if (len > sizeof(buf))
len = sizeof(buf);
write_prdt(p, slot, cfis, buf, len);
cfis[4] = (cfis[4] & ~7) | ATA_I_CMD | ATA_I_IN;
ahci_write_fis_d2h(p, slot, cfis, ATA_S_READY | ATA_S_DSC);
break;
}
case 2:
{
int msf, size;
uint64_t sectors;
uint8_t *bp, buf[50];
msf = (acmd[1] >> 1) & 1;
bp = buf + 2;
*bp++ = 1;
*bp++ = 1;
*bp++ = 1;
*bp++ = 0x14;
*bp++ = 0;
*bp++ = 0xa0;
*bp++ = 0;
*bp++ = 0;
*bp++ = 0;
*bp++ = 0;
*bp++ = 1;
*bp++ = 0;
*bp++ = 0;
*bp++ = 1;
*bp++ = 0x14;
*bp++ = 0;
*bp++ = 0xa1;
*bp++ = 0;
*bp++ = 0;
*bp++ = 0;
*bp++ = 0;
*bp++ = 1;
*bp++ = 0;
*bp++ = 0;
*bp++ = 1;
*bp++ = 0x14;
*bp++ = 0;
*bp++ = 0xa2;
*bp++ = 0;
*bp++ = 0;
*bp++ = 0;
sectors = blockif_size(p->bctx) / blockif_sectsz(p->bctx);
sectors >>= 2;
if (msf) {
*bp++ = 0;
lba_to_msf(bp, sectors);
bp += 3;
} else {
be32enc(bp, sectors);
bp += 4;
}
*bp++ = 1;
*bp++ = 0x14;
*bp++ = 0;
*bp++ = 1;
*bp++ = 0;
*bp++ = 0;
*bp++ = 0;
if (msf) {
*bp++ = 0;
lba_to_msf(bp, 0);
bp += 3;
} else {
*bp++ = 0;
*bp++ = 0;
*bp++ = 0;
*bp++ = 0;
}
size = bp - buf;
be16enc(buf, size - 2);
if (len > size)
len = size;
write_prdt(p, slot, cfis, buf, len);
cfis[4] = (cfis[4] & ~7) | ATA_I_CMD | ATA_I_IN;
ahci_write_fis_d2h(p, slot, cfis, ATA_S_READY | ATA_S_DSC);
break;
}
default:
{
uint32_t tfd;
p->sense_key = ATA_SENSE_ILLEGAL_REQUEST;
p->asc = 0x24;
tfd = (p->sense_key << 12) | ATA_S_READY | ATA_S_ERROR;
cfis[4] = (cfis[4] & ~7) | ATA_I_CMD | ATA_I_IN;
ahci_write_fis_d2h(p, slot, cfis, tfd);
break;
}
}
}
static void
atapi_report_luns(struct ahci_port *p, int slot, uint8_t *cfis)
{
uint8_t buf[16];
memset(buf, 0, sizeof(buf));
buf[3] = 8;
cfis[4] = (cfis[4] & ~7) | ATA_I_CMD | ATA_I_IN;
write_prdt(p, slot, cfis, buf, sizeof(buf));
ahci_write_fis_d2h(p, slot, cfis, ATA_S_READY | ATA_S_DSC);
}
static void
atapi_read(struct ahci_port *p, int slot, uint8_t *cfis, uint32_t done)
{
struct ahci_ioreq *aior;
struct ahci_cmd_hdr *hdr;
struct ahci_prdt_entry *prdt;
struct blockif_req *breq;
uint8_t *acmd;
uint64_t lba;
uint32_t len;
int err;
acmd = cfis + 0x40;
hdr = (struct ahci_cmd_hdr *)(p->cmd_lst + slot * AHCI_CL_SIZE);
prdt = (struct ahci_prdt_entry *)(cfis + 0x80);
lba = be32dec(acmd + 2);
if (acmd[0] == READ_10)
len = be16dec(acmd + 7);
else
len = be32dec(acmd + 6);
if (len == 0) {
cfis[4] = (cfis[4] & ~7) | ATA_I_CMD | ATA_I_IN;
ahci_write_fis_d2h(p, slot, cfis, ATA_S_READY | ATA_S_DSC);
}
lba *= 2048;
len *= 2048;
/*
* Pull request off free list
*/
aior = STAILQ_FIRST(&p->iofhd);
assert(aior != NULL);
STAILQ_REMOVE_HEAD(&p->iofhd, io_flist);
aior->cfis = cfis;
aior->slot = slot;
aior->len = len;
aior->done = done;
aior->readop = 1;
breq = &aior->io_req;
breq->br_offset = lba + done;
ahci_build_iov(p, aior, prdt, hdr->prdtl);
/* Mark this command in-flight. */
p->pending |= 1 << slot;
/* Stuff request onto busy list. */
TAILQ_INSERT_HEAD(&p->iobhd, aior, io_blist);
err = blockif_read(p->bctx, breq);
assert(err == 0);
}
static void
atapi_request_sense(struct ahci_port *p, int slot, uint8_t *cfis)
{
uint8_t buf[64];
uint8_t *acmd;
int len;
acmd = cfis + 0x40;
len = acmd[4];
if (len > sizeof(buf))
len = sizeof(buf);
memset(buf, 0, len);
buf[0] = 0x70 | (1 << 7);
buf[2] = p->sense_key;
buf[7] = 10;
buf[12] = p->asc;
write_prdt(p, slot, cfis, buf, len);
cfis[4] = (cfis[4] & ~7) | ATA_I_CMD | ATA_I_IN;
ahci_write_fis_d2h(p, slot, cfis, ATA_S_READY | ATA_S_DSC);
}
static void
atapi_start_stop_unit(struct ahci_port *p, int slot, uint8_t *cfis)
{
uint8_t *acmd = cfis + 0x40;
uint32_t tfd;
switch (acmd[4] & 3) {
case 0:
case 1:
case 3:
cfis[4] = (cfis[4] & ~7) | ATA_I_CMD | ATA_I_IN;
tfd = ATA_S_READY | ATA_S_DSC;
break;
case 2:
/* TODO eject media */
cfis[4] = (cfis[4] & ~7) | ATA_I_CMD | ATA_I_IN;
p->sense_key = ATA_SENSE_ILLEGAL_REQUEST;
p->asc = 0x53;
tfd = (p->sense_key << 12) | ATA_S_READY | ATA_S_ERROR;
break;
}
ahci_write_fis_d2h(p, slot, cfis, tfd);
}
static void
atapi_mode_sense(struct ahci_port *p, int slot, uint8_t *cfis)
{
uint8_t *acmd;
uint32_t tfd;
uint8_t pc, code;
int len;
acmd = cfis + 0x40;
len = be16dec(acmd + 7);
pc = acmd[2] >> 6;
code = acmd[2] & 0x3f;
switch (pc) {
case 0:
switch (code) {
case MODEPAGE_RW_ERROR_RECOVERY:
{
uint8_t buf[16];
if (len > sizeof(buf))
len = sizeof(buf);
memset(buf, 0, sizeof(buf));
be16enc(buf, 16 - 2);
buf[2] = 0x70;
buf[8] = 0x01;
buf[9] = 16 - 10;
buf[11] = 0x05;
write_prdt(p, slot, cfis, buf, len);
tfd = ATA_S_READY | ATA_S_DSC;
break;
}
case MODEPAGE_CD_CAPABILITIES:
{
uint8_t buf[30];
if (len > sizeof(buf))
len = sizeof(buf);
memset(buf, 0, sizeof(buf));
be16enc(buf, 30 - 2);
buf[2] = 0x70;
buf[8] = 0x2A;
buf[9] = 30 - 10;
buf[10] = 0x08;
buf[12] = 0x71;
be16enc(&buf[18], 2);
be16enc(&buf[20], 512);
write_prdt(p, slot, cfis, buf, len);
tfd = ATA_S_READY | ATA_S_DSC;
break;
}
default:
goto error;
break;
}
break;
case 3:
p->sense_key = ATA_SENSE_ILLEGAL_REQUEST;
p->asc = 0x39;
tfd = (p->sense_key << 12) | ATA_S_READY | ATA_S_ERROR;
break;
error:
case 1:
case 2:
p->sense_key = ATA_SENSE_ILLEGAL_REQUEST;
p->asc = 0x24;
tfd = (p->sense_key << 12) | ATA_S_READY | ATA_S_ERROR;
break;
}
cfis[4] = (cfis[4] & ~7) | ATA_I_CMD | ATA_I_IN;
ahci_write_fis_d2h(p, slot, cfis, tfd);
}
static void
atapi_get_event_status_notification(struct ahci_port *p, int slot,
uint8_t *cfis)
{
uint8_t *acmd;
uint32_t tfd;
acmd = cfis + 0x40;
/* we don't support asynchronous operation */
if (!(acmd[1] & 1)) {
p->sense_key = ATA_SENSE_ILLEGAL_REQUEST;
p->asc = 0x24;
tfd = (p->sense_key << 12) | ATA_S_READY | ATA_S_ERROR;
} else {
uint8_t buf[8];
int len;
len = be16dec(acmd + 7);
if (len > sizeof(buf))
len = sizeof(buf);
memset(buf, 0, sizeof(buf));
be16enc(buf, 8 - 2);
buf[2] = 0x04;
buf[3] = 0x10;
buf[5] = 0x02;
write_prdt(p, slot, cfis, buf, len);
tfd = ATA_S_READY | ATA_S_DSC;
}
cfis[4] = (cfis[4] & ~7) | ATA_I_CMD | ATA_I_IN;
ahci_write_fis_d2h(p, slot, cfis, tfd);
}
static void
handle_packet_cmd(struct ahci_port *p, int slot, uint8_t *cfis)
{
uint8_t *acmd;
acmd = cfis + 0x40;
#ifdef AHCI_DEBUG
{
int i;
DPRINTF("ACMD:");
for (i = 0; i < 16; i++)
DPRINTF("%02x ", acmd[i]);
DPRINTF("");
}
#endif
switch (acmd[0]) {
case TEST_UNIT_READY:
cfis[4] = (cfis[4] & ~7) | ATA_I_CMD | ATA_I_IN;
ahci_write_fis_d2h(p, slot, cfis, ATA_S_READY | ATA_S_DSC);
break;
case INQUIRY:
atapi_inquiry(p, slot, cfis);
break;
case READ_CAPACITY:
atapi_read_capacity(p, slot, cfis);
break;
case PREVENT_ALLOW:
/* TODO */
cfis[4] = (cfis[4] & ~7) | ATA_I_CMD | ATA_I_IN;
ahci_write_fis_d2h(p, slot, cfis, ATA_S_READY | ATA_S_DSC);
break;
case READ_TOC:
atapi_read_toc(p, slot, cfis);
break;
case REPORT_LUNS:
atapi_report_luns(p, slot, cfis);
break;
case READ_10:
case READ_12:
atapi_read(p, slot, cfis, 0);
break;
case REQUEST_SENSE:
atapi_request_sense(p, slot, cfis);
break;
case START_STOP_UNIT:
atapi_start_stop_unit(p, slot, cfis);
break;
case MODE_SENSE_10:
atapi_mode_sense(p, slot, cfis);
break;
case GET_EVENT_STATUS_NOTIFICATION:
atapi_get_event_status_notification(p, slot, cfis);
break;
default:
cfis[4] = (cfis[4] & ~7) | ATA_I_CMD | ATA_I_IN;
p->sense_key = ATA_SENSE_ILLEGAL_REQUEST;
p->asc = 0x20;
ahci_write_fis_d2h(p, slot, cfis, (p->sense_key << 12) |
ATA_S_READY | ATA_S_ERROR);
break;
}
}
static void
ahci_handle_cmd(struct ahci_port *p, int slot, uint8_t *cfis)
{
p->tfd |= ATA_S_BUSY;
switch (cfis[2]) {
case ATA_ATA_IDENTIFY:
handle_identify(p, slot, cfis);
break;
case ATA_SETFEATURES:
{
switch (cfis[3]) {
case ATA_SF_ENAB_SATA_SF:
switch (cfis[12]) {
case ATA_SATA_SF_AN:
p->tfd = ATA_S_DSC | ATA_S_READY;
break;
default:
p->tfd = ATA_S_ERROR | ATA_S_READY;
p->tfd |= (ATA_ERROR_ABORT << 8);
break;
}
break;
case ATA_SF_ENAB_WCACHE:
case ATA_SF_DIS_WCACHE:
case ATA_SF_ENAB_RCACHE:
case ATA_SF_DIS_RCACHE:
p->tfd = ATA_S_DSC | ATA_S_READY;
break;
case ATA_SF_SETXFER:
{
switch (cfis[12] & 0xf8) {
case ATA_PIO:
case ATA_PIO0:
break;
case ATA_WDMA0:
case ATA_UDMA0:
p->xfermode = (cfis[12] & 0x7);
break;
}
p->tfd = ATA_S_DSC | ATA_S_READY;
break;
}
default:
p->tfd = ATA_S_ERROR | ATA_S_READY;
p->tfd |= (ATA_ERROR_ABORT << 8);
break;
}
ahci_write_fis_d2h(p, slot, cfis, p->tfd);
break;
}
case ATA_SET_MULTI:
if (cfis[12] != 0 &&
(cfis[12] > 128 || (cfis[12] & (cfis[12] - 1)))) {
p->tfd = ATA_S_ERROR | ATA_S_READY;
p->tfd |= (ATA_ERROR_ABORT << 8);
} else {
p->mult_sectors = cfis[12];
p->tfd = ATA_S_DSC | ATA_S_READY;
}
ahci_write_fis_d2h(p, slot, cfis, p->tfd);
break;
case ATA_READ:
case ATA_WRITE:
case ATA_READ48:
case ATA_WRITE48:
case ATA_READ_MUL:
case ATA_WRITE_MUL:
case ATA_READ_MUL48:
case ATA_WRITE_MUL48:
case ATA_READ_DMA:
case ATA_WRITE_DMA:
case ATA_READ_DMA48:
case ATA_WRITE_DMA48:
case ATA_READ_FPDMA_QUEUED:
case ATA_WRITE_FPDMA_QUEUED:
ahci_handle_rw(p, slot, cfis, 0);
break;
case ATA_FLUSHCACHE:
case ATA_FLUSHCACHE48:
ahci_handle_flush(p, slot, cfis);
break;
case ATA_DATA_SET_MANAGEMENT:
if (cfis[11] == 0 && cfis[3] == ATA_DSM_TRIM &&
cfis[13] == 0 && cfis[12] == 1) {
ahci_handle_dsm_trim(p, slot, cfis, 0);
break;
}
ahci_write_fis_d2h(p, slot, cfis,
(ATA_E_ABORT << 8) | ATA_S_READY | ATA_S_ERROR);
break;
case ATA_SEND_FPDMA_QUEUED:
if ((cfis[13] & 0x1f) == ATA_SFPDMA_DSM &&
cfis[17] == 0 && cfis[16] == ATA_DSM_TRIM &&
cfis[11] == 0 && cfis[3] == 1) {
ahci_handle_dsm_trim(p, slot, cfis, 0);
break;
}
ahci_write_fis_d2h(p, slot, cfis,
(ATA_E_ABORT << 8) | ATA_S_READY | ATA_S_ERROR);
break;
case ATA_READ_LOG_EXT:
case ATA_READ_LOG_DMA_EXT:
ahci_handle_read_log(p, slot, cfis);
break;
case ATA_SECURITY_FREEZE_LOCK:
case ATA_SMART_CMD:
case ATA_NOP:
ahci_write_fis_d2h(p, slot, cfis,
(ATA_E_ABORT << 8) | ATA_S_READY | ATA_S_ERROR);
break;
case ATA_CHECK_POWER_MODE:
cfis[12] = 0xff; /* always on */
ahci_write_fis_d2h(p, slot, cfis, ATA_S_READY | ATA_S_DSC);
break;
case ATA_STANDBY_CMD:
case ATA_STANDBY_IMMEDIATE:
case ATA_IDLE_CMD:
case ATA_IDLE_IMMEDIATE:
case ATA_SLEEP:
case ATA_READ_VERIFY:
case ATA_READ_VERIFY48:
ahci_write_fis_d2h(p, slot, cfis, ATA_S_READY | ATA_S_DSC);
break;
case ATA_ATAPI_IDENTIFY:
handle_atapi_identify(p, slot, cfis);
break;
case ATA_PACKET_CMD:
if (!p->atapi) {
ahci_write_fis_d2h(p, slot, cfis,
(ATA_E_ABORT << 8) | ATA_S_READY | ATA_S_ERROR);
} else
handle_packet_cmd(p, slot, cfis);
break;
default:
WPRINTF("Unsupported cmd:%02x", cfis[2]);
ahci_write_fis_d2h(p, slot, cfis,
(ATA_E_ABORT << 8) | ATA_S_READY | ATA_S_ERROR);
break;
}
}
static void
ahci_handle_slot(struct ahci_port *p, int slot)
{
struct ahci_cmd_hdr *hdr;
#ifdef AHCI_DEBUG
struct ahci_prdt_entry *prdt;
#endif
struct pci_ahci_softc *sc;
uint8_t *cfis;
#ifdef AHCI_DEBUG
int cfl, i;
#endif
sc = p->pr_sc;
hdr = (struct ahci_cmd_hdr *)(p->cmd_lst + slot * AHCI_CL_SIZE);
#ifdef AHCI_DEBUG
cfl = (hdr->flags & 0x1f) * 4;
#endif
cfis = paddr_guest2host(ahci_ctx(sc), hdr->ctba,
0x80 + hdr->prdtl * sizeof(struct ahci_prdt_entry));
#ifdef AHCI_DEBUG
prdt = (struct ahci_prdt_entry *)(cfis + 0x80);
DPRINTF("cfis:");
for (i = 0; i < cfl; i++) {
if (i % 10 == 0)
DPRINTF("");
DPRINTF("%02x ", cfis[i]);
}
DPRINTF("");
for (i = 0; i < hdr->prdtl; i++) {
DPRINTF("%d@%08"PRIx64"", prdt->dbc & 0x3fffff, prdt->dba);
prdt++;
}
#endif
if (cfis[0] != FIS_TYPE_REGH2D) {
WPRINTF("Not a H2D FIS:%02x", cfis[0]);
return;
}
if (cfis[1] & 0x80) {
ahci_handle_cmd(p, slot, cfis);
} else {
if (cfis[15] & (1 << 2))
p->reset = 1;
else if (p->reset) {
p->reset = 0;
ahci_port_reset(p);
}
p->ci &= ~(1 << slot);
}
}
static void
ahci_handle_port(struct ahci_port *p)
{
if (!(p->cmd & AHCI_P_CMD_ST))
return;
/*
* Search for any new commands to issue ignoring those that
* are already in-flight. Stop if device is busy or in error.
*/
for (; (p->ci & ~p->pending) != 0; p->ccs = ((p->ccs + 1) & 31)) {
if ((p->tfd & (ATA_S_BUSY | ATA_S_DRQ)) != 0)
break;
if (p->waitforclear)
break;
if ((p->ci & ~p->pending & (1 << p->ccs)) != 0) {
p->cmd &= ~AHCI_P_CMD_CCS_MASK;
p->cmd |= p->ccs << AHCI_P_CMD_CCS_SHIFT;
ahci_handle_slot(p, p->ccs);
}
}
}
/*
* blockif callback routine - this runs in the context of the blockif
* i/o thread, so the mutex needs to be acquired.
*/
static void
ata_ioreq_cb(struct blockif_req *br, int err)
{
struct ahci_cmd_hdr *hdr;
struct ahci_ioreq *aior;
struct ahci_port *p;
struct pci_ahci_softc *sc;
uint32_t tfd;
uint8_t *cfis;
int slot, ncq, dsm;
DPRINTF("%s %d", __func__, err);
ncq = dsm = 0;
aior = br->br_param;
p = aior->io_pr;
cfis = aior->cfis;
slot = aior->slot;
sc = p->pr_sc;
hdr = (struct ahci_cmd_hdr *)(p->cmd_lst + slot * AHCI_CL_SIZE);
if (cfis[2] == ATA_WRITE_FPDMA_QUEUED ||
cfis[2] == ATA_READ_FPDMA_QUEUED ||
cfis[2] == ATA_SEND_FPDMA_QUEUED)
ncq = 1;
if (cfis[2] == ATA_DATA_SET_MANAGEMENT ||
(cfis[2] == ATA_SEND_FPDMA_QUEUED &&
(cfis[13] & 0x1f) == ATA_SFPDMA_DSM))
dsm = 1;
pthread_mutex_lock(&sc->mtx);
/*
* Delete the blockif request from the busy list
*/
TAILQ_REMOVE(&p->iobhd, aior, io_blist);
/*
* Move the blockif request back to the free list
*/
STAILQ_INSERT_TAIL(&p->iofhd, aior, io_flist);
if (!err)
hdr->prdbc = aior->done;
if (!err && aior->more) {
if (dsm)
ahci_handle_dsm_trim(p, slot, cfis, aior->done);
else
ahci_handle_rw(p, slot, cfis, aior->done);
goto out;
}
if (!err)
tfd = ATA_S_READY | ATA_S_DSC;
else
tfd = (ATA_E_ABORT << 8) | ATA_S_READY | ATA_S_ERROR;
if (ncq)
ahci_write_fis_sdb(p, slot, cfis, tfd);
else
ahci_write_fis_d2h(p, slot, cfis, tfd);
/*
* This command is now complete.
*/
p->pending &= ~(1 << slot);
ahci_check_stopped(p);
ahci_handle_port(p);
out:
pthread_mutex_unlock(&sc->mtx);
DPRINTF("%s exit", __func__);
}
static void
atapi_ioreq_cb(struct blockif_req *br, int err)
{
struct ahci_cmd_hdr *hdr;
struct ahci_ioreq *aior;
struct ahci_port *p;
struct pci_ahci_softc *sc;
uint8_t *cfis;
uint32_t tfd;
int slot;
DPRINTF("%s %d", __func__, err);
aior = br->br_param;
p = aior->io_pr;
cfis = aior->cfis;
slot = aior->slot;
sc = p->pr_sc;
hdr = (struct ahci_cmd_hdr *)(p->cmd_lst + aior->slot * AHCI_CL_SIZE);
pthread_mutex_lock(&sc->mtx);
/*
* Delete the blockif request from the busy list
*/
TAILQ_REMOVE(&p->iobhd, aior, io_blist);
/*
* Move the blockif request back to the free list
*/
STAILQ_INSERT_TAIL(&p->iofhd, aior, io_flist);
if (!err)
hdr->prdbc = aior->done;
if (!err && aior->more) {
atapi_read(p, slot, cfis, aior->done);
goto out;
}
if (!err) {
tfd = ATA_S_READY | ATA_S_DSC;
} else {
p->sense_key = ATA_SENSE_ILLEGAL_REQUEST;
p->asc = 0x21;
tfd = (p->sense_key << 12) | ATA_S_READY | ATA_S_ERROR;
}
cfis[4] = (cfis[4] & ~7) | ATA_I_CMD | ATA_I_IN;
ahci_write_fis_d2h(p, slot, cfis, tfd);
/*
* This command is now complete.
*/
p->pending &= ~(1 << slot);
ahci_check_stopped(p);
ahci_handle_port(p);
out:
pthread_mutex_unlock(&sc->mtx);
DPRINTF("%s exit", __func__);
}
static void
pci_ahci_ioreq_init(struct ahci_port *pr)
{
struct ahci_ioreq *vr;
int i;
pr->ioqsz = blockif_queuesz(pr->bctx);
pr->ioreq = calloc(pr->ioqsz, sizeof(struct ahci_ioreq));
STAILQ_INIT(&pr->iofhd);
/*
* Add all i/o request entries to the free queue
*/
for (i = 0; i < pr->ioqsz; i++) {
vr = &pr->ioreq[i];
vr->io_pr = pr;
if (!pr->atapi)
vr->io_req.br_callback = ata_ioreq_cb;
else
vr->io_req.br_callback = atapi_ioreq_cb;
vr->io_req.br_param = vr;
STAILQ_INSERT_TAIL(&pr->iofhd, vr, io_flist);
}
TAILQ_INIT(&pr->iobhd);
}
static void
pci_ahci_port_write(struct pci_ahci_softc *sc, uint64_t offset, uint64_t value)
{
int port = (offset - AHCI_OFFSET) / AHCI_STEP;
offset = (offset - AHCI_OFFSET) % AHCI_STEP;
struct ahci_port *p = &sc->port[port];
DPRINTF("pci_ahci_port %d: write offset 0x%"PRIx64" value 0x%"PRIx64"",
port, offset, value);
switch (offset) {
case AHCI_P_CLB:
p->clb = value;
break;
case AHCI_P_CLBU:
p->clbu = value;
break;
case AHCI_P_FB:
p->fb = value;
break;
case AHCI_P_FBU:
p->fbu = value;
break;
case AHCI_P_IS:
p->is &= ~value;
ahci_port_intr(p);
break;
case AHCI_P_IE:
p->ie = value & 0xFDC000FF;
ahci_port_intr(p);
break;
case AHCI_P_CMD:
{
p->cmd &= ~(AHCI_P_CMD_ST | AHCI_P_CMD_SUD | AHCI_P_CMD_POD |
AHCI_P_CMD_CLO | AHCI_P_CMD_FRE | AHCI_P_CMD_APSTE |
AHCI_P_CMD_ATAPI | AHCI_P_CMD_DLAE | AHCI_P_CMD_ALPE |
AHCI_P_CMD_ASP | AHCI_P_CMD_ICC_MASK);
p->cmd |= (AHCI_P_CMD_ST | AHCI_P_CMD_SUD | AHCI_P_CMD_POD |
AHCI_P_CMD_CLO | AHCI_P_CMD_FRE | AHCI_P_CMD_APSTE |
AHCI_P_CMD_ATAPI | AHCI_P_CMD_DLAE | AHCI_P_CMD_ALPE |
AHCI_P_CMD_ASP | AHCI_P_CMD_ICC_MASK) & value;
if (!(value & AHCI_P_CMD_ST)) {
ahci_port_stop(p);
} else {
uint64_t clb;
p->cmd |= AHCI_P_CMD_CR;
clb = (uint64_t)p->clbu << 32 | p->clb;
p->cmd_lst = paddr_guest2host(ahci_ctx(sc), clb,
AHCI_CL_SIZE * AHCI_MAX_SLOTS);
}
if (value & AHCI_P_CMD_FRE) {
uint64_t fb;
p->cmd |= AHCI_P_CMD_FR;
fb = (uint64_t)p->fbu << 32 | p->fb;
/* we don't support FBSCP, so rfis size is 256Bytes */
p->rfis = paddr_guest2host(ahci_ctx(sc), fb, 256);
} else {
p->cmd &= ~AHCI_P_CMD_FR;
}
if (value & AHCI_P_CMD_CLO) {
p->tfd &= ~(ATA_S_BUSY | ATA_S_DRQ);
p->cmd &= ~AHCI_P_CMD_CLO;
}
if (value & AHCI_P_CMD_ICC_MASK) {
p->cmd &= ~AHCI_P_CMD_ICC_MASK;
}
ahci_handle_port(p);
break;
}
case AHCI_P_TFD:
case AHCI_P_SIG:
case AHCI_P_SSTS:
WPRINTF("pci_ahci_port: read only registers 0x%"PRIx64"", offset);
break;
case AHCI_P_SCTL:
p->sctl = value;
if (!(p->cmd & AHCI_P_CMD_ST)) {
if (value & ATA_SC_DET_RESET)
ahci_port_reset(p);
}
break;
case AHCI_P_SERR:
p->serr &= ~value;
break;
case AHCI_P_SACT:
p->sact |= value;
break;
case AHCI_P_CI:
p->ci |= value;
ahci_handle_port(p);
break;
case AHCI_P_SNTF:
case AHCI_P_FBS:
default:
break;
}
}
static void
pci_ahci_host_write(struct pci_ahci_softc *sc, uint64_t offset, uint64_t value)
{
DPRINTF("pci_ahci_host: write offset 0x%"PRIx64" value 0x%"PRIx64"",
offset, value);
switch (offset) {
case AHCI_CAP:
case AHCI_PI:
case AHCI_VS:
case AHCI_CAP2:
DPRINTF("pci_ahci_host: read only registers 0x%"PRIx64"", offset);
break;
case AHCI_GHC:
if (value & AHCI_GHC_HR) {
ahci_reset(sc);
break;
}
if (value & AHCI_GHC_IE)
sc->ghc |= AHCI_GHC_IE;
else
sc->ghc &= ~AHCI_GHC_IE;
ahci_generate_intr(sc, 0xffffffff);
break;
case AHCI_IS:
sc->is &= ~value;
ahci_generate_intr(sc, value);
break;
default:
break;
}
}
static void
pci_ahci_write(struct vmctx *ctx, int vcpu, struct pci_devinst *pi,
int baridx, uint64_t offset, int size, uint64_t value)
{
struct pci_ahci_softc *sc = pi->pi_arg;
assert(baridx == 5);
assert((offset % 4) == 0 && size == 4);
pthread_mutex_lock(&sc->mtx);
if (offset < AHCI_OFFSET)
pci_ahci_host_write(sc, offset, value);
else if (offset < AHCI_OFFSET + sc->ports * AHCI_STEP)
pci_ahci_port_write(sc, offset, value);
else
WPRINTF("pci_ahci: unknown i/o write offset 0x%"PRIx64"", offset);
pthread_mutex_unlock(&sc->mtx);
}
static uint64_t
pci_ahci_host_read(struct pci_ahci_softc *sc, uint64_t offset)
{
uint32_t value;
switch (offset) {
case AHCI_CAP:
case AHCI_GHC:
case AHCI_IS:
case AHCI_PI:
case AHCI_VS:
case AHCI_CCCC:
case AHCI_CCCP:
case AHCI_EM_LOC:
case AHCI_EM_CTL:
case AHCI_CAP2:
{
uint32_t *p = &sc->cap;
p += (offset - AHCI_CAP) / sizeof(uint32_t);
value = *p;
break;
}
default:
value = 0;
break;
}
DPRINTF("pci_ahci_host: read offset 0x%"PRIx64" value 0x%x",
offset, value);
return (value);
}
static uint64_t
pci_ahci_port_read(struct pci_ahci_softc *sc, uint64_t offset)
{
uint32_t value;
int port = (offset - AHCI_OFFSET) / AHCI_STEP;
offset = (offset - AHCI_OFFSET) % AHCI_STEP;
switch (offset) {
case AHCI_P_CLB:
case AHCI_P_CLBU:
case AHCI_P_FB:
case AHCI_P_FBU:
case AHCI_P_IS:
case AHCI_P_IE:
case AHCI_P_CMD:
case AHCI_P_TFD:
case AHCI_P_SIG:
case AHCI_P_SSTS:
case AHCI_P_SCTL:
case AHCI_P_SERR:
case AHCI_P_SACT:
case AHCI_P_CI:
case AHCI_P_SNTF:
case AHCI_P_FBS:
{
uint32_t *p= &sc->port[port].clb;
p += (offset - AHCI_P_CLB) / sizeof(uint32_t);
value = *p;
break;
}
default:
value = 0;
break;
}
DPRINTF("pci_ahci_port %d: read offset 0x%"PRIx64" value 0x%x",
port, offset, value);
return value;
}
static uint64_t
pci_ahci_read(struct vmctx *ctx, int vcpu, struct pci_devinst *pi, int baridx,
uint64_t regoff, int size)
{
struct pci_ahci_softc *sc = pi->pi_arg;
uint64_t offset;
uint32_t value;
assert(baridx == 5);
assert(size == 1 || size == 2 || size == 4);
assert((regoff & (size - 1)) == 0);
pthread_mutex_lock(&sc->mtx);
offset = regoff & ~0x3; /* round down to a multiple of 4 bytes */
if (offset < AHCI_OFFSET)
value = pci_ahci_host_read(sc, offset);
else if (offset < AHCI_OFFSET + sc->ports * AHCI_STEP)
value = pci_ahci_port_read(sc, offset);
else {
value = 0;
WPRINTF("pci_ahci: unknown i/o read offset 0x%"PRIx64"",
regoff);
}
value >>= 8 * (regoff & 0x3);
pthread_mutex_unlock(&sc->mtx);
return (value);
}
static int
pci_ahci_init(struct vmctx *ctx, struct pci_devinst *pi, char *opts, int atapi)
{
char bident[sizeof("XX:XX:XX")];
struct blockif_ctxt *bctxt;
struct pci_ahci_softc *sc;
int ret, slots, p;
MD5_CTX mdctx;
u_char digest[16];
char *next, *next2;
char *bopt, *uopt, *xopts, *config;
FILE* fp;
size_t block_len;
int comma, optpos;
ret = 0;
#ifdef AHCI_DEBUG
dbg = fopen("/tmp/log", "w+");
#endif
sc = calloc(1, sizeof(struct pci_ahci_softc));
pi->pi_arg = sc;
sc->asc_pi = pi;
pthread_mutex_init(&sc->mtx, NULL);
sc->ports = 0;
sc->pi = 0;
slots = 32;
for (p = 0; p < MAX_PORTS && opts != NULL; p++, opts = next) {
struct ata_params *ata_ident = &sc->port[p].ata_ident;
memset(ata_ident, 0, sizeof(struct ata_params));
/* Identify and cut off type of present port. */
if (strncmp(opts, "hd:", 3) == 0) {
atapi = 0;
opts += 3;
} else if (strncmp(opts, "cd:", 3) == 0) {
atapi = 1;
opts += 3;
}
/* Find and cut off the next port options. */
next = strstr(opts, ",hd:");
next2 = strstr(opts, ",cd:");
if (next == NULL || (next2 != NULL && next2 < next))
next = next2;
if (next != NULL) {
next[0] = 0;
next++;
}
if (opts[0] == 0)
continue;
uopt = strdup(opts);
bopt = NULL;
fp = open_memstream(&bopt, &block_len);
comma = 0;
optpos = 0;
for (xopts = strtok(uopt, ",");
xopts != NULL;
xopts = strtok(NULL, ",")) {
/* First option assume as block filename. */
if (optpos == 0) {
/*
* Create an identifier for the backing file.
* Use parts of the md5 sum of the filename
*/
char ident[AHCI_PORT_IDENT];
MD5Init(&mdctx);
MD5Update(&mdctx, opts, strlen(opts));
MD5Final(digest, &mdctx);
snprintf(ident, AHCI_PORT_IDENT,
"BHYVE-%02X%02X-%02X%02X-%02X%02X",
digest[0], digest[1], digest[2], digest[3], digest[4],
digest[5]);
ata_string((uint8_t*)&ata_ident->serial, ident, 20);
ata_string((uint8_t*)&ata_ident->revision, "001", 8);
if (atapi) {
ata_string((uint8_t*)&ata_ident->model, "BHYVE SATA DVD ROM", 40);
}
else {
ata_string((uint8_t*)&ata_ident->model, "BHYVE SATA DISK", 40);
}
}
if ((config = strchr(xopts, '=')) != NULL) {
*config++ = '\0';
if (!strcmp("nmrr", xopts)) {
ata_ident->media_rotation_rate = atoi(config);
}
else if (!strcmp("ser", xopts)) {
ata_string((uint8_t*)(&ata_ident->serial), config, 20);
}
else if (!strcmp("rev", xopts)) {
ata_string((uint8_t*)(&ata_ident->revision), config, 8);
}
else if (!strcmp("model", xopts)) {
ata_string((uint8_t*)(&ata_ident->model), config, 40);
}
else {
/* Pass all other options to blockif_open. */
*--config = '=';
fprintf(fp, "%s%s", comma ? "," : "", xopts);
comma = 1;
}
}
else {
/* Pass all other options to blockif_open. */
fprintf(fp, "%s%s", comma ? "," : "", xopts);
comma = 1;
}
optpos++;
}
free(uopt);
fclose(fp);
DPRINTF("%s\n", bopt);
/*
* Attempt to open the backing image. Use the PCI slot/func
* and the port number for the identifier string.
*/
snprintf(bident, sizeof(bident), "%d:%d:%d", pi->pi_slot,
pi->pi_func, p);
bctxt = blockif_open(bopt, bident);
free(bopt);
if (bctxt == NULL) {
sc->ports = p;
ret = 1;
goto open_fail;
}
sc->port[p].bctx = bctxt;
sc->port[p].pr_sc = sc;
sc->port[p].port = p;
sc->port[p].atapi = atapi;
ata_identify_init(&sc->port[p], atapi);
/*
* Allocate blockif request structures and add them
* to the free list
*/
pci_ahci_ioreq_init(&sc->port[p]);
sc->pi |= (1 << p);
if (sc->port[p].ioqsz < slots)
slots = sc->port[p].ioqsz;
}
sc->ports = p;
/* Intel ICH8 AHCI */
--slots;
if (sc->ports < DEF_PORTS)
sc->ports = DEF_PORTS;
sc->cap = AHCI_CAP_64BIT | AHCI_CAP_SNCQ | AHCI_CAP_SSNTF |
AHCI_CAP_SMPS | AHCI_CAP_SSS | AHCI_CAP_SALP |
AHCI_CAP_SAL | AHCI_CAP_SCLO | (0x3 << AHCI_CAP_ISS_SHIFT)|
AHCI_CAP_PMD | AHCI_CAP_SSC | AHCI_CAP_PSC |
(slots << AHCI_CAP_NCS_SHIFT) | AHCI_CAP_SXS | (sc->ports - 1);
sc->vs = 0x10300;
sc->cap2 = AHCI_CAP2_APST;
ahci_reset(sc);
pci_set_cfgdata16(pi, PCIR_DEVICE, 0x2821);
pci_set_cfgdata16(pi, PCIR_VENDOR, 0x8086);
pci_set_cfgdata8(pi, PCIR_CLASS, PCIC_STORAGE);
pci_set_cfgdata8(pi, PCIR_SUBCLASS, PCIS_STORAGE_SATA);
pci_set_cfgdata8(pi, PCIR_PROGIF, PCIP_STORAGE_SATA_AHCI_1_0);
p = MIN(sc->ports, 16);
p = flsl(p) - ((p & (p - 1)) ? 0 : 1);
pci_emul_add_msicap(pi, 1 << p);
pci_emul_alloc_bar(pi, 5, PCIBAR_MEM32,
AHCI_OFFSET + sc->ports * AHCI_STEP);
pci_lintr_request(pi);
open_fail:
if (ret) {
for (p = 0; p < sc->ports; p++) {
if (sc->port[p].bctx != NULL)
blockif_close(sc->port[p].bctx);
}
free(sc);
}
return (ret);
}
static int
pci_ahci_hd_init(struct vmctx *ctx, struct pci_devinst *pi, char *opts)
{
return (pci_ahci_init(ctx, pi, opts, 0));
}
static int
pci_ahci_atapi_init(struct vmctx *ctx, struct pci_devinst *pi, char *opts)
{
return (pci_ahci_init(ctx, pi, opts, 1));
}
#ifdef BHYVE_SNAPSHOT
static int
pci_ahci_snapshot_save_queues(struct ahci_port *port,
struct vm_snapshot_meta *meta)
{
int ret;
int idx;
struct ahci_ioreq *ioreq;
STAILQ_FOREACH(ioreq, &port->iofhd, io_flist) {
idx = ((void *) ioreq - (void *) port->ioreq) / sizeof(*ioreq);
SNAPSHOT_VAR_OR_LEAVE(idx, meta, ret, done);
}
idx = -1;
SNAPSHOT_VAR_OR_LEAVE(idx, meta, ret, done);
TAILQ_FOREACH(ioreq, &port->iobhd, io_blist) {
idx = ((void *) ioreq - (void *) port->ioreq) / sizeof(*ioreq);
SNAPSHOT_VAR_OR_LEAVE(idx, meta, ret, done);
/*
* Snapshot only the busy requests; other requests are
* not valid.
*/
ret = blockif_snapshot_req(&ioreq->io_req, meta);
if (ret != 0) {
fprintf(stderr, "%s: failed to snapshot req\r\n",
__func__);
goto done;
}
}
idx = -1;
SNAPSHOT_VAR_OR_LEAVE(idx, meta, ret, done);
done:
return (ret);
}
static int
pci_ahci_snapshot_restore_queues(struct ahci_port *port,
struct vm_snapshot_meta *meta)
{
int ret;
int idx;
struct ahci_ioreq *ioreq;
/* Empty the free queue before restoring. */
while (!STAILQ_EMPTY(&port->iofhd))
STAILQ_REMOVE_HEAD(&port->iofhd, io_flist);
/* Restore the free queue. */
while (1) {
SNAPSHOT_VAR_OR_LEAVE(idx, meta, ret, done);
if (idx == -1)
break;
STAILQ_INSERT_TAIL(&port->iofhd, &port->ioreq[idx], io_flist);
}
/* Restore the busy queue. */
while (1) {
SNAPSHOT_VAR_OR_LEAVE(idx, meta, ret, done);
if (idx == -1)
break;
ioreq = &port->ioreq[idx];
TAILQ_INSERT_TAIL(&port->iobhd, ioreq, io_blist);
/*
* Restore only the busy requests; other requests are
* not valid.
*/
ret = blockif_snapshot_req(&ioreq->io_req, meta);
if (ret != 0) {
fprintf(stderr, "%s: failed to restore request\r\n",
__func__);
goto done;
}
/* Re-enqueue the requests in the block interface. */
if (ioreq->readop)
ret = blockif_read(port->bctx, &ioreq->io_req);
else
ret = blockif_write(port->bctx, &ioreq->io_req);
if (ret != 0) {
fprintf(stderr,
"%s: failed to re-enqueue request\r\n",
__func__);
goto done;
}
}
done:
return (ret);
}
static int
pci_ahci_snapshot(struct vm_snapshot_meta *meta)
{
int i, j, ret;
void *bctx;
struct pci_devinst *pi;
struct pci_ahci_softc *sc;
struct ahci_port *port;
struct ahci_cmd_hdr *hdr;
struct ahci_ioreq *ioreq;
pi = meta->dev_data;
sc = pi->pi_arg;
/* TODO: add mtx lock/unlock */
SNAPSHOT_VAR_OR_LEAVE(sc->ports, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(sc->cap, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(sc->ghc, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(sc->is, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(sc->pi, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(sc->vs, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(sc->ccc_ctl, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(sc->ccc_pts, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(sc->em_loc, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(sc->em_ctl, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(sc->cap2, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(sc->bohc, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(sc->lintr, meta, ret, done);
for (i = 0; i < MAX_PORTS; i++) {
port = &sc->port[i];
if (meta->op == VM_SNAPSHOT_SAVE)
bctx = port->bctx;
SNAPSHOT_VAR_OR_LEAVE(bctx, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->port, meta, ret, done);
/* Mostly for restore; save is ensured by the lines above. */
if (((bctx == NULL) && (port->bctx != NULL)) ||
((bctx != NULL) && (port->bctx == NULL))) {
fprintf(stderr, "%s: ports not matching\r\n", __func__);
ret = EINVAL;
goto done;
}
if (port->bctx == NULL)
continue;
if (port->port != i) {
fprintf(stderr, "%s: ports not matching: "
"actual: %d expected: %d\r\n",
__func__, port->port, i);
ret = EINVAL;
goto done;
}
SNAPSHOT_GUEST2HOST_ADDR_OR_LEAVE(port->cmd_lst,
AHCI_CL_SIZE * AHCI_MAX_SLOTS, false, meta, ret, done);
SNAPSHOT_GUEST2HOST_ADDR_OR_LEAVE(port->rfis, 256, false, meta,
ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->ident, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->atapi, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->reset, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->waitforclear, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->mult_sectors, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->xfermode, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->err_cfis, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->sense_key, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->asc, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->ccs, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->pending, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->clb, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->clbu, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->fb, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->fbu, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->ie, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->cmd, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->unused0, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->tfd, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->sig, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->ssts, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->sctl, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->serr, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->sact, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->ci, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->sntf, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->fbs, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(port->ioqsz, meta, ret, done);
for (j = 0; j < port->ioqsz; j++) {
ioreq = &port->ioreq[j];
/* blockif_req snapshot done only for busy requests. */
hdr = (struct ahci_cmd_hdr *)(port->cmd_lst +
ioreq->slot * AHCI_CL_SIZE);
SNAPSHOT_GUEST2HOST_ADDR_OR_LEAVE(ioreq->cfis,
0x80 + hdr->prdtl * sizeof(struct ahci_prdt_entry),
false, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(ioreq->len, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(ioreq->done, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(ioreq->slot, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(ioreq->more, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(ioreq->readop, meta, ret, done);
}
/* Perform save / restore specific operations. */
if (meta->op == VM_SNAPSHOT_SAVE) {
ret = pci_ahci_snapshot_save_queues(port, meta);
if (ret != 0)
goto done;
} else if (meta->op == VM_SNAPSHOT_RESTORE) {
ret = pci_ahci_snapshot_restore_queues(port, meta);
if (ret != 0)
goto done;
} else {
ret = EINVAL;
goto done;
}
ret = blockif_snapshot(port->bctx, meta);
if (ret != 0) {
fprintf(stderr, "%s: failed to restore blockif\r\n",
__func__);
goto done;
}
}
done:
return (ret);
}
static int
pci_ahci_pause(struct vmctx *ctx, struct pci_devinst *pi)
{
struct pci_ahci_softc *sc;
struct blockif_ctxt *bctxt;
int i;
sc = pi->pi_arg;
for (i = 0; i < MAX_PORTS; i++) {
bctxt = sc->port[i].bctx;
if (bctxt == NULL)
continue;
blockif_pause(bctxt);
}
return (0);
}
static int
pci_ahci_resume(struct vmctx *ctx, struct pci_devinst *pi)
{
struct pci_ahci_softc *sc;
struct blockif_ctxt *bctxt;
int i;
sc = pi->pi_arg;
for (i = 0; i < MAX_PORTS; i++) {
bctxt = sc->port[i].bctx;
if (bctxt == NULL)
continue;
blockif_resume(bctxt);
}
return (0);
}
#endif
/*
* Use separate emulation names to distinguish drive and atapi devices
*/
struct pci_devemu pci_de_ahci = {
.pe_emu = "ahci",
.pe_init = pci_ahci_hd_init,
.pe_barwrite = pci_ahci_write,
.pe_barread = pci_ahci_read,
#ifdef BHYVE_SNAPSHOT
.pe_snapshot = pci_ahci_snapshot,
.pe_pause = pci_ahci_pause,
.pe_resume = pci_ahci_resume,
#endif
};
PCI_EMUL_SET(pci_de_ahci);
struct pci_devemu pci_de_ahci_hd = {
.pe_emu = "ahci-hd",
.pe_init = pci_ahci_hd_init,
.pe_barwrite = pci_ahci_write,
.pe_barread = pci_ahci_read,
#ifdef BHYVE_SNAPSHOT
.pe_snapshot = pci_ahci_snapshot,
.pe_pause = pci_ahci_pause,
.pe_resume = pci_ahci_resume,
#endif
};
PCI_EMUL_SET(pci_de_ahci_hd);
struct pci_devemu pci_de_ahci_cd = {
.pe_emu = "ahci-cd",
.pe_init = pci_ahci_atapi_init,
.pe_barwrite = pci_ahci_write,
.pe_barread = pci_ahci_read,
#ifdef BHYVE_SNAPSHOT
.pe_snapshot = pci_ahci_snapshot,
.pe_pause = pci_ahci_pause,
.pe_resume = pci_ahci_resume,
#endif
};
PCI_EMUL_SET(pci_de_ahci_cd);
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