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freebsd-dev/sys/dev/ahci/ahciem.c

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/*-
* Copyright (c) 2012 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,
* without modification, immediately at the beginning of the file.
* 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 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/module.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/endian.h>
#include <sys/malloc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <machine/stdarg.h>
#include <machine/resource.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <dev/led/led.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include "ahci.h"
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/cam_sim.h>
#include <cam/cam_xpt_sim.h>
#include <cam/cam_debug.h>
#include <cam/scsi/scsi_ses.h>
/* local prototypes */
static void ahciemaction(struct cam_sim *sim, union ccb *ccb);
static void ahciempoll(struct cam_sim *sim);
static int ahci_em_reset(device_t dev);
static void ahci_em_led(void *priv, int onoff);
static void ahci_em_setleds(device_t dev, int c);
static int
ahci_em_probe(device_t dev)
{
device_set_desc_copy(dev, "AHCI enclosure management bridge");
return (0);
}
static int
ahci_em_attach(device_t dev)
{
device_t parent = device_get_parent(dev);
struct ahci_controller *ctlr = device_get_softc(parent);
struct ahci_enclosure *enc = device_get_softc(dev);
struct cam_devq *devq;
int i, c, rid, error;
char buf[32];
enc->dev = dev;
enc->quirks = ctlr->quirks;
enc->channels = ctlr->channels;
enc->ichannels = ctlr->ichannels;
mtx_init(&enc->mtx, "AHCI enclosure lock", NULL, MTX_DEF);
rid = 0;
if (!(enc->r_memc = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&rid, RF_ACTIVE))) {
mtx_destroy(&enc->mtx);
return (ENXIO);
}
enc->capsem = ATA_INL(enc->r_memc, 0);
rid = 1;
if (!(enc->r_memt = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&rid, RF_ACTIVE))) {
error = ENXIO;
goto err0;
}
if ((enc->capsem & (AHCI_EM_XMT | AHCI_EM_SMB)) == 0) {
rid = 2;
if (!(enc->r_memr = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&rid, RF_ACTIVE))) {
error = ENXIO;
goto err0;
}
} else
enc->r_memr = NULL;
mtx_lock(&enc->mtx);
if (ahci_em_reset(dev) != 0) {
error = ENXIO;
goto err1;
}
rid = ATA_IRQ_RID;
/* Create the device queue for our SIM. */
devq = cam_simq_alloc(1);
if (devq == NULL) {
device_printf(dev, "Unable to allocate SIM queue\n");
error = ENOMEM;
goto err1;
}
/* Construct SIM entry */
enc->sim = cam_sim_alloc(ahciemaction, ahciempoll, "ahciem", enc,
device_get_unit(dev), &enc->mtx,
1, 0, devq);
if (enc->sim == NULL) {
cam_simq_free(devq);
device_printf(dev, "Unable to allocate SIM\n");
error = ENOMEM;
goto err1;
}
if (xpt_bus_register(enc->sim, dev, 0) != CAM_SUCCESS) {
device_printf(dev, "unable to register xpt bus\n");
error = ENXIO;
goto err2;
}
if (xpt_create_path(&enc->path, /*periph*/NULL, cam_sim_path(enc->sim),
CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
device_printf(dev, "Unable to create path\n");
error = ENXIO;
goto err3;
}
mtx_unlock(&enc->mtx);
if (bootverbose) {
device_printf(dev, "Caps:%s%s%s%s%s%s%s%s\n",
(enc->capsem & AHCI_EM_PM) ? " PM":"",
(enc->capsem & AHCI_EM_ALHD) ? " ALHD":"",
(enc->capsem & AHCI_EM_XMT) ? " XMT":"",
(enc->capsem & AHCI_EM_SMB) ? " SMB":"",
(enc->capsem & AHCI_EM_SGPIO) ? " SGPIO":"",
(enc->capsem & AHCI_EM_SES2) ? " SES-2":"",
(enc->capsem & AHCI_EM_SAFTE) ? " SAF-TE":"",
(enc->capsem & AHCI_EM_LED) ? " LED":"");
}
if ((enc->capsem & AHCI_EM_LED)) {
for (c = 0; c < enc->channels; c++) {
if ((enc->ichannels & (1 << c)) == 0)
continue;
for (i = 0; i < AHCI_NUM_LEDS; i++) {
enc->leds[c * AHCI_NUM_LEDS + i].dev = dev;
enc->leds[c * AHCI_NUM_LEDS + i].num =
c * AHCI_NUM_LEDS + i;
}
if ((enc->capsem & AHCI_EM_ALHD) == 0) {
snprintf(buf, sizeof(buf), "%s.%d.act",
device_get_nameunit(parent), c);
enc->leds[c * AHCI_NUM_LEDS + 0].led =
led_create(ahci_em_led,
&enc->leds[c * AHCI_NUM_LEDS + 0], buf);
}
snprintf(buf, sizeof(buf), "%s.%d.locate",
device_get_nameunit(parent), c);
enc->leds[c * AHCI_NUM_LEDS + 1].led =
led_create(ahci_em_led,
&enc->leds[c * AHCI_NUM_LEDS + 1], buf);
snprintf(buf, sizeof(buf), "%s.%d.fault",
device_get_nameunit(parent), c);
enc->leds[c * AHCI_NUM_LEDS + 2].led =
led_create(ahci_em_led,
&enc->leds[c * AHCI_NUM_LEDS + 2], buf);
}
}
return (0);
err3:
xpt_bus_deregister(cam_sim_path(enc->sim));
err2:
cam_sim_free(enc->sim, /*free_devq*/TRUE);
err1:
mtx_unlock(&enc->mtx);
if (enc->r_memr)
bus_release_resource(dev, SYS_RES_MEMORY, 2, enc->r_memr);
err0:
if (enc->r_memt)
bus_release_resource(dev, SYS_RES_MEMORY, 1, enc->r_memt);
bus_release_resource(dev, SYS_RES_MEMORY, 0, enc->r_memc);
mtx_destroy(&enc->mtx);
return (error);
}
static int
ahci_em_detach(device_t dev)
{
struct ahci_enclosure *enc = device_get_softc(dev);
int i;
for (i = 0; i < enc->channels * AHCI_NUM_LEDS; i++) {
if (enc->leds[i].led)
led_destroy(enc->leds[i].led);
}
mtx_lock(&enc->mtx);
xpt_async(AC_LOST_DEVICE, enc->path, NULL);
xpt_free_path(enc->path);
xpt_bus_deregister(cam_sim_path(enc->sim));
cam_sim_free(enc->sim, /*free_devq*/TRUE);
mtx_unlock(&enc->mtx);
bus_release_resource(dev, SYS_RES_MEMORY, 0, enc->r_memc);
bus_release_resource(dev, SYS_RES_MEMORY, 1, enc->r_memt);
if (enc->r_memr)
bus_release_resource(dev, SYS_RES_MEMORY, 2, enc->r_memr);
mtx_destroy(&enc->mtx);
return (0);
}
static int
ahci_em_reset(device_t dev)
{
struct ahci_enclosure *enc;
int i, timeout;
enc = device_get_softc(dev);
ATA_OUTL(enc->r_memc, 0, AHCI_EM_RST);
timeout = 1000;
while ((ATA_INL(enc->r_memc, 0) & AHCI_EM_RST) &&
--timeout > 0)
DELAY(1000);
if (timeout == 0) {
device_printf(dev, "EM timeout\n");
return (1);
}
for (i = 0; i < enc->channels; i++)
ahci_em_setleds(dev, i);
return (0);
}
static int
ahci_em_suspend(device_t dev)
{
struct ahci_enclosure *enc = device_get_softc(dev);
mtx_lock(&enc->mtx);
xpt_freeze_simq(enc->sim, 1);
mtx_unlock(&enc->mtx);
return (0);
}
static int
ahci_em_resume(device_t dev)
{
struct ahci_enclosure *enc = device_get_softc(dev);
mtx_lock(&enc->mtx);
ahci_em_reset(dev);
xpt_release_simq(enc->sim, TRUE);
mtx_unlock(&enc->mtx);
return (0);
}
devclass_t ahciem_devclass;
static device_method_t ahciem_methods[] = {
DEVMETHOD(device_probe, ahci_em_probe),
DEVMETHOD(device_attach, ahci_em_attach),
DEVMETHOD(device_detach, ahci_em_detach),
DEVMETHOD(device_suspend, ahci_em_suspend),
DEVMETHOD(device_resume, ahci_em_resume),
{ 0, 0 }
};
static driver_t ahciem_driver = {
"ahciem",
ahciem_methods,
sizeof(struct ahci_enclosure)
};
DRIVER_MODULE(ahciem, ahci, ahciem_driver, ahciem_devclass, 0, 0);
static void
ahci_em_setleds(device_t dev, int c)
{
struct ahci_enclosure *enc;
int timeout;
int16_t val;
enc = device_get_softc(dev);
val = 0;
if (enc->status[c][2] & 0x80) /* Activity */
val |= (1 << 0);
if (enc->status[c][2] & SESCTL_RQSID) /* Identification */
val |= (1 << 3);
else if (enc->status[c][3] & SESCTL_RQSFLT) /* Fault */
val |= (1 << 6);
else if (enc->status[c][1] & 0x02) /* Rebuild */
val |= (1 << 6) | (1 << 3);
timeout = 10000;
while (ATA_INL(enc->r_memc, 0) & (AHCI_EM_TM | AHCI_EM_RST) &&
--timeout > 0)
DELAY(100);
if (timeout == 0)
device_printf(dev, "Transmit timeout\n");
ATA_OUTL(enc->r_memt, 0, (1 << 8) | (0 << 16) | (0 << 24));
ATA_OUTL(enc->r_memt, 4, c | (0 << 8) | (val << 16));
ATA_OUTL(enc->r_memc, 0, AHCI_EM_TM);
}
static void
ahci_em_led(void *priv, int onoff)
{
struct ahci_led *led;
struct ahci_enclosure *enc;
int c, l;
led = (struct ahci_led *)priv;
enc = device_get_softc(led->dev);
c = led->num / AHCI_NUM_LEDS;
l = led->num % AHCI_NUM_LEDS;
if (l == 0) {
if (onoff)
enc->status[c][2] |= 0x80;
else
enc->status[c][2] &= ~0x80;
} else if (l == 1) {
if (onoff)
enc->status[c][2] |= SESCTL_RQSID;
else
enc->status[c][2] &= ~SESCTL_RQSID;
} else if (l == 2) {
if (onoff)
enc->status[c][3] |= SESCTL_RQSFLT;
else
enc->status[c][3] &= SESCTL_RQSFLT;
}
ahci_em_setleds(led->dev, c);
}
static int
ahci_check_ids(union ccb *ccb)
{
if (ccb->ccb_h.target_id != 0) {
ccb->ccb_h.status = CAM_TID_INVALID;
xpt_done(ccb);
return (-1);
}
if (ccb->ccb_h.target_lun != 0) {
ccb->ccb_h.status = CAM_LUN_INVALID;
xpt_done(ccb);
return (-1);
}
return (0);
}
static void
ahci_em_emulate_ses_on_led(device_t dev, union ccb *ccb)
{
struct ahci_enclosure *enc;
struct ses_status_page *page;
struct ses_status_array_dev_slot *ads, *ads0;
struct ses_elm_desc_hdr *elmd;
uint8_t *buf;
int i;
enc = device_get_softc(dev);
buf = ccb->ataio.data_ptr;
/* General request validation. */
if (ccb->ataio.cmd.command != ATA_SEP_ATTN ||
ccb->ataio.dxfer_len < ccb->ataio.cmd.sector_count * 4) {
ccb->ccb_h.status = CAM_REQ_INVALID;
goto out;
}
/* SEMB IDENTIFY */
if (ccb->ataio.cmd.features == 0xEC &&
ccb->ataio.cmd.sector_count >= 16) {
bzero(buf, ccb->ataio.dxfer_len);
buf[0] = 64; /* Valid bytes. */
buf[2] = 0x30; /* NAA Locally Assigned. */
strncpy(&buf[3], device_get_nameunit(dev), 7);
strncpy(&buf[10], "AHCI ", SID_VENDOR_SIZE);
strncpy(&buf[18], "SGPIO Enclosure ", SID_PRODUCT_SIZE);
strncpy(&buf[34], "1.00", SID_REVISION_SIZE);
strncpy(&buf[39], "0001", 4);
strncpy(&buf[43], "S-E-S ", 6);
strncpy(&buf[49], "2.00", 4);
ccb->ccb_h.status = CAM_REQ_CMP;
goto out;
}
/* SEMB RECEIVE DIAGNOSTIC RESULT (0) */
page = (struct ses_status_page *)buf;
if (ccb->ataio.cmd.lba_low == 0x02 &&
ccb->ataio.cmd.features == 0x00 &&
ccb->ataio.cmd.sector_count >= 2) {
bzero(buf, ccb->ataio.dxfer_len);
page->hdr.page_code = 0;
scsi_ulto2b(4, page->hdr.length);
buf[4] = 0;
buf[5] = 1;
buf[6] = 2;
buf[7] = 7;
ccb->ccb_h.status = CAM_REQ_CMP;
goto out;
}
/* SEMB RECEIVE DIAGNOSTIC RESULT (1) */
if (ccb->ataio.cmd.lba_low == 0x02 &&
ccb->ataio.cmd.features == 0x01 &&
ccb->ataio.cmd.sector_count >= 13) {
struct ses_enc_desc *ed;
struct ses_elm_type_desc *td;
bzero(buf, ccb->ataio.dxfer_len);
page->hdr.page_code = 0x01;
scsi_ulto2b(4 + 4 + 36 + 4, page->hdr.length);
ed = (struct ses_enc_desc *)&buf[8];
ed->byte0 = 0x11;
ed->subenc_id = 0;
ed->num_types = 1;
ed->length = 36;
strncpy(ed->vendor_id, "AHCI ", SID_VENDOR_SIZE);
strncpy(ed->product_id, "SGPIO Enclosure ", SID_PRODUCT_SIZE);
strncpy(ed->product_rev, " ", SID_REVISION_SIZE);
td = (struct ses_elm_type_desc *)ses_enc_desc_next(ed);
td->etype_elm_type = 0x17;
td->etype_maxelt = enc->channels;
td->etype_subenc = 0;
td->etype_txt_len = 0;
ccb->ccb_h.status = CAM_REQ_CMP;
goto out;
}
/* SEMB RECEIVE DIAGNOSTIC RESULT (2) */
if (ccb->ataio.cmd.lba_low == 0x02 &&
ccb->ataio.cmd.features == 0x02 &&
ccb->ataio.cmd.sector_count >= (3 + enc->channels)) {
bzero(buf, ccb->ataio.dxfer_len);
page->hdr.page_code = 0x02;
scsi_ulto2b(4 + 4 * (1 + enc->channels),
page->hdr.length);
for (i = 0; i < enc->channels; i++) {
ads = &page->elements[i + 1].array_dev_slot;
memcpy(ads, enc->status[i], 4);
ads->common.bytes[0] |=
(enc->ichannels & (1 << i)) ?
SES_OBJSTAT_UNKNOWN :
SES_OBJSTAT_NOTINSTALLED;
}
ccb->ccb_h.status = CAM_REQ_CMP;
goto out;
}
/* SEMB SEND DIAGNOSTIC (2) */
if (ccb->ataio.cmd.lba_low == 0x82 &&
ccb->ataio.cmd.features == 0x02 &&
ccb->ataio.cmd.sector_count >= (3 + enc->channels)) {
ads0 = &page->elements[0].array_dev_slot;
for (i = 0; i < enc->channels; i++) {
ads = &page->elements[i + 1].array_dev_slot;
if (ads->common.bytes[0] & SESCTL_CSEL) {
enc->status[i][0] = 0;
enc->status[i][1] =
ads->bytes[0] & 0x02;
enc->status[i][2] =
ads->bytes[1] & (0x80 | SESCTL_RQSID);
enc->status[i][3] =
ads->bytes[2] & SESCTL_RQSFLT;
ahci_em_setleds(dev, i);
} else if (ads0->common.bytes[0] & SESCTL_CSEL) {
enc->status[i][0] = 0;
enc->status[i][1] =
ads0->bytes[0] & 0x02;
enc->status[i][2] =
ads0->bytes[1] & (0x80 | SESCTL_RQSID);
enc->status[i][3] =
ads0->bytes[2] & SESCTL_RQSFLT;
ahci_em_setleds(dev, i);
}
}
ccb->ccb_h.status = CAM_REQ_CMP;
goto out;
}
/* SEMB RECEIVE DIAGNOSTIC RESULT (7) */
if (ccb->ataio.cmd.lba_low == 0x02 &&
ccb->ataio.cmd.features == 0x07 &&
ccb->ataio.cmd.sector_count >= (3 + 3 * enc->channels)) {
bzero(buf, ccb->ataio.dxfer_len);
page->hdr.page_code = 0x07;
scsi_ulto2b(4 + 4 + 12 * enc->channels,
page->hdr.length);
for (i = 0; i < enc->channels; i++) {
elmd = (struct ses_elm_desc_hdr *)&buf[8 + 4 + 12 * i];
scsi_ulto2b(8, elmd->length);
snprintf((char *)(elmd + 1), 9, "SLOT %03d", i);
}
ccb->ccb_h.status = CAM_REQ_CMP;
goto out;
}
ccb->ccb_h.status = CAM_REQ_INVALID;
out:
xpt_done(ccb);
}
static void
ahci_em_begin_transaction(device_t dev, union ccb *ccb)
{
struct ahci_enclosure *enc;
struct ata_res *res;
enc = device_get_softc(dev);
res = &ccb->ataio.res;
bzero(res, sizeof(*res));
if ((ccb->ataio.cmd.flags & CAM_ATAIO_CONTROL) &&
(ccb->ataio.cmd.control & ATA_A_RESET)) {
res->lba_high = 0xc3;
res->lba_mid = 0x3c;
ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
return;
}
if (enc->capsem & AHCI_EM_LED) {
ahci_em_emulate_ses_on_led(dev, ccb);
return;
} else
device_printf(dev, "Unsupported enclosure interface\n");
ccb->ccb_h.status = CAM_REQ_INVALID;
xpt_done(ccb);
}
static void
ahciemaction(struct cam_sim *sim, union ccb *ccb)
{
device_t dev, parent;
struct ahci_enclosure *enc;
CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE,
("ahciemaction func_code=%x\n", ccb->ccb_h.func_code));
enc = cam_sim_softc(sim);
dev = enc->dev;
switch (ccb->ccb_h.func_code) {
case XPT_ATA_IO: /* Execute the requested I/O operation */
if (ahci_check_ids(ccb))
return;
ahci_em_begin_transaction(dev, ccb);
return;
case XPT_RESET_BUS: /* Reset the specified bus */
case XPT_RESET_DEV: /* Bus Device Reset the specified device */
ahci_em_reset(dev);
ccb->ccb_h.status = CAM_REQ_CMP;
break;
case XPT_PATH_INQ: /* Path routing inquiry */
{
struct ccb_pathinq *cpi = &ccb->cpi;
parent = device_get_parent(dev);
cpi->version_num = 1; /* XXX??? */
cpi->hba_inquiry = PI_SDTR_ABLE;
cpi->target_sprt = 0;
cpi->hba_misc = PIM_SEQSCAN;
cpi->hba_eng_cnt = 0;
cpi->max_target = 0;
cpi->max_lun = 0;
cpi->initiator_id = 0;
cpi->bus_id = cam_sim_bus(sim);
cpi->base_transfer_speed = 150000;
strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
strncpy(cpi->hba_vid, "AHCI", HBA_IDLEN);
strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
cpi->unit_number = cam_sim_unit(sim);
cpi->transport = XPORT_SATA;
cpi->transport_version = XPORT_VERSION_UNSPECIFIED;
cpi->protocol = PROTO_ATA;
cpi->protocol_version = PROTO_VERSION_UNSPECIFIED;
cpi->maxio = MAXPHYS;
cpi->hba_vendor = pci_get_vendor(parent);
cpi->hba_device = pci_get_device(parent);
cpi->hba_subvendor = pci_get_subvendor(parent);
cpi->hba_subdevice = pci_get_subdevice(parent);
cpi->ccb_h.status = CAM_REQ_CMP;
break;
}
default:
ccb->ccb_h.status = CAM_REQ_INVALID;
break;
}
xpt_done(ccb);
}
static void
ahciempoll(struct cam_sim *sim)
{
}
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