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freebsd-nq/sys/cam/ata/ata_pmp.c
Alexander Motin 7bdb664e50 MFp4; 
- Cleanup kernel messages, mostly PMP.
- Took references on devices, while PMP reinitializes them, to not let them
go and distort freeze reference counting.
2009-12-07 16:23:25 +00:00

760 lines
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/*-
* Copyright (c) 2009 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>
#ifdef _KERNEL
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bio.h>
#include <sys/sysctl.h>
#include <sys/taskqueue.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/conf.h>
#include <sys/devicestat.h>
#include <sys/eventhandler.h>
#include <sys/malloc.h>
#include <sys/cons.h>
#include <geom/geom_disk.h>
#endif /* _KERNEL */
#ifndef _KERNEL
#include <stdio.h>
#include <string.h>
#endif /* _KERNEL */
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/cam_periph.h>
#include <cam/cam_xpt_periph.h>
#include <cam/cam_xpt_internal.h>
#include <cam/cam_sim.h>
#include <cam/ata/ata_all.h>
#ifdef _KERNEL
typedef enum {
PMP_STATE_NORMAL,
PMP_STATE_PORTS,
PMP_STATE_PRECONFIG,
PMP_STATE_RESET,
PMP_STATE_CONNECT,
PMP_STATE_CHECK,
PMP_STATE_CLEAR,
PMP_STATE_CONFIG,
PMP_STATE_SCAN
} pmp_state;
typedef enum {
PMP_FLAG_SCTX_INIT = 0x200
} pmp_flags;
typedef enum {
PMP_CCB_PROBE = 0x01,
} pmp_ccb_state;
/* Offsets into our private area for storing information */
#define ccb_state ppriv_field0
#define ccb_bp ppriv_ptr1
struct pmp_softc {
SLIST_ENTRY(pmp_softc) links;
pmp_state state;
pmp_flags flags;
uint32_t pm_pid;
uint32_t pm_prv;
int pm_ports;
int pm_step;
int pm_try;
int found;
int reset;
int frozen;
int restart;
union ccb saved_ccb;
struct task sysctl_task;
struct sysctl_ctx_list sysctl_ctx;
struct sysctl_oid *sysctl_tree;
};
static periph_init_t pmpinit;
static void pmpasync(void *callback_arg, u_int32_t code,
struct cam_path *path, void *arg);
static void pmpsysctlinit(void *context, int pending);
static periph_ctor_t pmpregister;
static periph_dtor_t pmpcleanup;
static periph_start_t pmpstart;
static periph_oninv_t pmponinvalidate;
static void pmpdone(struct cam_periph *periph,
union ccb *done_ccb);
#ifndef PMP_DEFAULT_TIMEOUT
#define PMP_DEFAULT_TIMEOUT 30 /* Timeout in seconds */
#endif
#ifndef PMP_DEFAULT_RETRY
#define PMP_DEFAULT_RETRY 1
#endif
static int pmp_retry_count = PMP_DEFAULT_RETRY;
static int pmp_default_timeout = PMP_DEFAULT_TIMEOUT;
SYSCTL_NODE(_kern_cam, OID_AUTO, pmp, CTLFLAG_RD, 0,
"CAM Direct Access Disk driver");
SYSCTL_INT(_kern_cam_pmp, OID_AUTO, retry_count, CTLFLAG_RW,
&pmp_retry_count, 0, "Normal I/O retry count");
TUNABLE_INT("kern.cam.pmp.retry_count", &pmp_retry_count);
SYSCTL_INT(_kern_cam_pmp, OID_AUTO, default_timeout, CTLFLAG_RW,
&pmp_default_timeout, 0, "Normal I/O timeout (in seconds)");
TUNABLE_INT("kern.cam.pmp.default_timeout", &pmp_default_timeout);
static struct periph_driver pmpdriver =
{
pmpinit, "pmp",
TAILQ_HEAD_INITIALIZER(pmpdriver.units), /* generation */ 0,
CAM_PERIPH_DRV_EARLY
};
PERIPHDRIVER_DECLARE(pmp, pmpdriver);
MALLOC_DEFINE(M_ATPMP, "ata_pmp", "ata_pmp buffers");
static void
pmpinit(void)
{
cam_status status;
/*
* Install a global async callback. This callback will
* receive async callbacks like "new device found".
*/
status = xpt_register_async(AC_FOUND_DEVICE, pmpasync, NULL, NULL);
if (status != CAM_REQ_CMP) {
printf("pmp: Failed to attach master async callback "
"due to status 0x%x!\n", status);
}
}
static void
pmpfreeze(struct cam_periph *periph, int mask)
{
struct pmp_softc *softc = (struct pmp_softc *)periph->softc;
struct cam_path *dpath;
int i;
mask &= ~softc->frozen;
for (i = 0; i < 15; i++) {
if ((mask & (1 << i)) == 0)
continue;
if (xpt_create_path(&dpath, periph,
xpt_path_path_id(periph->path),
i, 0) == CAM_REQ_CMP) {
softc->frozen |= (1 << i);
xpt_acquire_device(dpath->device);
cam_freeze_devq(dpath);
xpt_free_path(dpath);
}
}
}
static void
pmprelease(struct cam_periph *periph, int mask)
{
struct pmp_softc *softc = (struct pmp_softc *)periph->softc;
struct cam_path *dpath;
int i;
mask &= softc->frozen;
for (i = 0; i < 15; i++) {
if ((mask & (1 << i)) == 0)
continue;
if (xpt_create_path(&dpath, periph,
xpt_path_path_id(periph->path),
i, 0) == CAM_REQ_CMP) {
softc->frozen &= ~(1 << i);
cam_release_devq(dpath, 0, 0, 0, FALSE);
xpt_release_device(dpath->device);
xpt_free_path(dpath);
}
}
}
static void
pmponinvalidate(struct cam_periph *periph)
{
struct pmp_softc *softc;
struct cam_path *dpath;
int i;
softc = (struct pmp_softc *)periph->softc;
/*
* De-register any async callbacks.
*/
xpt_register_async(0, pmpasync, periph, periph->path);
for (i = 0; i < 15; i++) {
if (xpt_create_path(&dpath, periph,
xpt_path_path_id(periph->path),
i, 0) == CAM_REQ_CMP) {
xpt_async(AC_LOST_DEVICE, dpath, NULL);
xpt_free_path(dpath);
}
}
pmprelease(periph, -1);
xpt_print(periph->path, "lost device\n");
}
static void
pmpcleanup(struct cam_periph *periph)
{
struct pmp_softc *softc;
softc = (struct pmp_softc *)periph->softc;
xpt_print(periph->path, "removing device entry\n");
cam_periph_unlock(periph);
/*
* If we can't free the sysctl tree, oh well...
*/
if ((softc->flags & PMP_FLAG_SCTX_INIT) != 0
&& sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
xpt_print(periph->path, "can't remove sysctl context\n");
}
free(softc, M_DEVBUF);
cam_periph_lock(periph);
}
static void
pmpasync(void *callback_arg, u_int32_t code,
struct cam_path *path, void *arg)
{
struct cam_periph *periph;
struct pmp_softc *softc;
periph = (struct cam_periph *)callback_arg;
switch (code) {
case AC_FOUND_DEVICE:
{
struct ccb_getdev *cgd;
cam_status status;
cgd = (struct ccb_getdev *)arg;
if (cgd == NULL)
break;
if (cgd->protocol != PROTO_SATAPM)
break;
/*
* Allocate a peripheral instance for
* this device and start the probe
* process.
*/
status = cam_periph_alloc(pmpregister, pmponinvalidate,
pmpcleanup, pmpstart,
"pmp", CAM_PERIPH_BIO,
cgd->ccb_h.path, pmpasync,
AC_FOUND_DEVICE, cgd);
if (status != CAM_REQ_CMP
&& status != CAM_REQ_INPROG)
printf("pmpasync: Unable to attach to new device "
"due to status 0x%x\n", status);
break;
}
case AC_SCSI_AEN:
case AC_SENT_BDR:
case AC_BUS_RESET:
softc = (struct pmp_softc *)periph->softc;
cam_periph_async(periph, code, path, arg);
if (code == AC_SCSI_AEN && softc->state != PMP_STATE_NORMAL &&
softc->state != PMP_STATE_SCAN)
break;
if (softc->state != PMP_STATE_SCAN)
pmpfreeze(periph, softc->found);
else
pmpfreeze(periph, softc->found & ~(1 << softc->pm_step));
if (code == AC_SENT_BDR || code == AC_BUS_RESET)
softc->found = 0; /* We have to reset everything. */
if (softc->state == PMP_STATE_NORMAL) {
softc->state = PMP_STATE_PORTS;
cam_periph_acquire(periph);
xpt_schedule(periph, CAM_PRIORITY_BUS);
} else
softc->restart = 1;
break;
default:
cam_periph_async(periph, code, path, arg);
break;
}
}
static void
pmpsysctlinit(void *context, int pending)
{
struct cam_periph *periph;
struct pmp_softc *softc;
char tmpstr[80], tmpstr2[80];
periph = (struct cam_periph *)context;
if (cam_periph_acquire(periph) != CAM_REQ_CMP)
return;
softc = (struct pmp_softc *)periph->softc;
snprintf(tmpstr, sizeof(tmpstr), "CAM PMP unit %d", periph->unit_number);
snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
sysctl_ctx_init(&softc->sysctl_ctx);
softc->flags |= PMP_FLAG_SCTX_INIT;
softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
SYSCTL_STATIC_CHILDREN(_kern_cam_pmp), OID_AUTO, tmpstr2,
CTLFLAG_RD, 0, tmpstr);
if (softc->sysctl_tree == NULL) {
printf("pmpsysctlinit: unable to allocate sysctl tree\n");
cam_periph_release(periph);
return;
}
cam_periph_release(periph);
}
static cam_status
pmpregister(struct cam_periph *periph, void *arg)
{
struct pmp_softc *softc;
struct ccb_pathinq cpi;
struct ccb_getdev *cgd;
cgd = (struct ccb_getdev *)arg;
if (periph == NULL) {
printf("pmpregister: periph was NULL!!\n");
return(CAM_REQ_CMP_ERR);
}
if (cgd == NULL) {
printf("pmpregister: no getdev CCB, can't register device\n");
return(CAM_REQ_CMP_ERR);
}
softc = (struct pmp_softc *)malloc(sizeof(*softc), M_DEVBUF,
M_NOWAIT|M_ZERO);
if (softc == NULL) {
printf("pmpregister: Unable to probe new device. "
"Unable to allocate softc\n");
return(CAM_REQ_CMP_ERR);
}
periph->softc = softc;
softc->state = PMP_STATE_PORTS;
softc->pm_pid = ((uint32_t *)&cgd->ident_data)[0];
softc->pm_prv = ((uint32_t *)&cgd->ident_data)[1];
/* Check if the SIM does not want queued commands */
bzero(&cpi, sizeof(cpi));
xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
cpi.ccb_h.func_code = XPT_PATH_INQ;
xpt_action((union ccb *)&cpi);
TASK_INIT(&softc->sysctl_task, 0, pmpsysctlinit, periph);
xpt_announce_periph(periph, NULL);
/*
* Add async callbacks for bus reset and
* bus device reset calls. I don't bother
* checking if this fails as, in most cases,
* the system will function just fine without
* them and the only alternative would be to
* not attach the device on failure.
*/
xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE |
AC_SCSI_AEN, pmpasync, periph, periph->path);
/*
* Take an exclusive refcount on the periph while pmpstart is called
* to finish the probe. The reference will be dropped in pmpdone at
* the end of probe.
*/
(void)cam_periph_acquire(periph);
xpt_schedule(periph, CAM_PRIORITY_BUS);
return(CAM_REQ_CMP);
}
static void
pmpstart(struct cam_periph *periph, union ccb *start_ccb)
{
struct ccb_ataio *ataio;
struct pmp_softc *softc;
softc = (struct pmp_softc *)periph->softc;
ataio = &start_ccb->ataio;
if (softc->restart) {
softc->restart = 0;
softc->state = PMP_STATE_PORTS;
}
switch (softc->state) {
case PMP_STATE_PORTS:
cam_fill_ataio(ataio,
pmp_retry_count,
pmpdone,
/*flags*/CAM_DIR_NONE,
0,
/*data_ptr*/NULL,
/*dxfer_len*/0,
pmp_default_timeout * 1000);
ata_pm_read_cmd(ataio, 2, 15);
break;
case PMP_STATE_PRECONFIG:
cam_fill_ataio(ataio,
pmp_retry_count,
pmpdone,
/*flags*/CAM_DIR_NONE,
0,
/*data_ptr*/NULL,
/*dxfer_len*/0,
pmp_default_timeout * 1000);
ata_pm_write_cmd(ataio, 0x60, 15, 0x0);
break;
case PMP_STATE_RESET:
cam_fill_ataio(ataio,
pmp_retry_count,
pmpdone,
/*flags*/CAM_DIR_NONE,
0,
/*data_ptr*/NULL,
/*dxfer_len*/0,
pmp_default_timeout * 1000);
ata_pm_write_cmd(ataio, 2, softc->pm_step,
(softc->found & (1 << softc->pm_step)) ? 0 : 1);
break;
case PMP_STATE_CONNECT:
cam_fill_ataio(ataio,
pmp_retry_count,
pmpdone,
/*flags*/CAM_DIR_NONE,
0,
/*data_ptr*/NULL,
/*dxfer_len*/0,
pmp_default_timeout * 1000);
ata_pm_write_cmd(ataio, 2, softc->pm_step, 0);
break;
case PMP_STATE_CHECK:
cam_fill_ataio(ataio,
pmp_retry_count,
pmpdone,
/*flags*/CAM_DIR_NONE,
0,
/*data_ptr*/NULL,
/*dxfer_len*/0,
pmp_default_timeout * 1000);
ata_pm_read_cmd(ataio, 0, softc->pm_step);
break;
case PMP_STATE_CLEAR:
softc->reset = 0;
cam_fill_ataio(ataio,
pmp_retry_count,
pmpdone,
/*flags*/CAM_DIR_NONE,
0,
/*data_ptr*/NULL,
/*dxfer_len*/0,
pmp_default_timeout * 1000);
ata_pm_write_cmd(ataio, 1, softc->pm_step, 0xFFFFFFFF);
break;
case PMP_STATE_CONFIG:
cam_fill_ataio(ataio,
pmp_retry_count,
pmpdone,
/*flags*/CAM_DIR_NONE,
0,
/*data_ptr*/NULL,
/*dxfer_len*/0,
pmp_default_timeout * 1000);
ata_pm_write_cmd(ataio, 0x60, 15, 0xf);
break;
default:
break;
}
xpt_action(start_ccb);
}
static void
pmpdone(struct cam_periph *periph, union ccb *done_ccb)
{
struct ccb_trans_settings cts;
struct pmp_softc *softc;
struct ccb_ataio *ataio;
union ccb *work_ccb;
struct cam_path *path, *dpath;
u_int32_t priority, res;
softc = (struct pmp_softc *)periph->softc;
ataio = &done_ccb->ataio;
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("pmpdone\n"));
path = done_ccb->ccb_h.path;
priority = done_ccb->ccb_h.pinfo.priority;
if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
if (cam_periph_error(done_ccb, 0, 0,
&softc->saved_ccb) == ERESTART) {
return;
} else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
cam_release_devq(done_ccb->ccb_h.path,
/*relsim_flags*/0,
/*reduction*/0,
/*timeout*/0,
/*getcount_only*/0);
}
goto done;
}
if (softc->restart) {
softc->restart = 0;
if (softc->state == PMP_STATE_SCAN) {
pmpfreeze(periph, 1 << softc->pm_step);
work_ccb = done_ccb;
done_ccb = (union ccb*)work_ccb->ccb_h.ppriv_ptr0;
/* Free the current request path- we're done with it. */
xpt_free_path(work_ccb->ccb_h.path);
xpt_free_ccb(work_ccb);
}
xpt_release_ccb(done_ccb);
softc->state = PMP_STATE_PORTS;
xpt_schedule(periph, priority);
return;
}
switch (softc->state) {
case PMP_STATE_PORTS:
softc->pm_ports = (done_ccb->ataio.res.lba_high << 24) +
(done_ccb->ataio.res.lba_mid << 16) +
(done_ccb->ataio.res.lba_low << 8) +
done_ccb->ataio.res.sector_count;
/* This PMP declares 6 ports, while only 5 of them are real.
* Port 5 is enclosure management bridge port, which has implementation
* problems, causing probe faults. Hide it for now. */
if (softc->pm_pid == 0x37261095 && softc->pm_ports == 6)
softc->pm_ports = 5;
/* This PMP declares 7 ports, while only 5 of them are real.
* Port 5 is some fake "Config Disk" with 640 sectors size,
* port 6 is enclosure management bridge port.
* Both fake ports has implementation problems, causing
* probe faults. Hide them for now. */
if (softc->pm_pid == 0x47261095 && softc->pm_ports == 7)
softc->pm_ports = 5;
/* These PMPs declare one more port then actually have,
* for configuration purposes. Hide it for now. */
if (softc->pm_pid == 0x57231095 || softc->pm_pid == 0x57331095 ||
softc->pm_pid == 0x57341095 || softc->pm_pid == 0x57441095)
softc->pm_ports--;
printf("%s%d: %d fan-out ports\n",
periph->periph_name, periph->unit_number,
softc->pm_ports);
softc->state = PMP_STATE_PRECONFIG;
xpt_release_ccb(done_ccb);
xpt_schedule(periph, priority);
return;
case PMP_STATE_PRECONFIG:
softc->pm_step = 0;
softc->state = PMP_STATE_RESET;
softc->reset |= ~softc->found;
xpt_release_ccb(done_ccb);
xpt_schedule(periph, priority);
return;
case PMP_STATE_RESET:
softc->pm_step++;
if (softc->pm_step >= softc->pm_ports) {
softc->pm_step = 0;
cam_freeze_devq(periph->path);
cam_release_devq(periph->path,
RELSIM_RELEASE_AFTER_TIMEOUT,
/*reduction*/0,
/*timeout*/5,
/*getcount_only*/0);
softc->state = PMP_STATE_CONNECT;
}
xpt_release_ccb(done_ccb);
xpt_schedule(periph, priority);
return;
case PMP_STATE_CONNECT:
softc->pm_step++;
if (softc->pm_step >= softc->pm_ports) {
softc->pm_step = 0;
softc->pm_try = 0;
cam_freeze_devq(periph->path);
cam_release_devq(periph->path,
RELSIM_RELEASE_AFTER_TIMEOUT,
/*reduction*/0,
/*timeout*/10,
/*getcount_only*/0);
softc->state = PMP_STATE_CHECK;
}
xpt_release_ccb(done_ccb);
xpt_schedule(periph, priority);
return;
case PMP_STATE_CHECK:
res = (done_ccb->ataio.res.lba_high << 24) +
(done_ccb->ataio.res.lba_mid << 16) +
(done_ccb->ataio.res.lba_low << 8) +
done_ccb->ataio.res.sector_count;
if ((res & 0xf0f) == 0x103 && (res & 0x0f0) != 0) {
if (bootverbose) {
printf("%s%d: port %d status: %08x\n",
periph->periph_name, periph->unit_number,
softc->pm_step, res);
}
/* Report device speed. */
if (xpt_create_path(&dpath, periph,
xpt_path_path_id(periph->path),
softc->pm_step, 0) == CAM_REQ_CMP) {
bzero(&cts, sizeof(cts));
xpt_setup_ccb(&cts.ccb_h, dpath, CAM_PRIORITY_NORMAL);
cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
cts.type = CTS_TYPE_CURRENT_SETTINGS;
cts.xport_specific.sata.revision = (res & 0x0f0) >> 4;
cts.xport_specific.sata.valid = CTS_SATA_VALID_REVISION;
xpt_action((union ccb *)&cts);
xpt_free_path(dpath);
}
softc->found |= (1 << softc->pm_step);
softc->pm_step++;
} else {
if (softc->pm_try < 10) {
cam_freeze_devq(periph->path);
cam_release_devq(periph->path,
RELSIM_RELEASE_AFTER_TIMEOUT,
/*reduction*/0,
/*timeout*/10,
/*getcount_only*/0);
softc->pm_try++;
} else {
if (bootverbose) {
printf("%s%d: port %d status: %08x\n",
periph->periph_name, periph->unit_number,
softc->pm_step, res);
}
softc->found &= ~(1 << softc->pm_step);
if (xpt_create_path(&dpath, periph,
done_ccb->ccb_h.path_id,
softc->pm_step, 0) == CAM_REQ_CMP) {
xpt_async(AC_LOST_DEVICE, dpath, NULL);
xpt_free_path(dpath);
}
softc->pm_step++;
}
}
if (softc->pm_step >= softc->pm_ports) {
if (softc->reset & softc->found) {
cam_freeze_devq(periph->path);
cam_release_devq(periph->path,
RELSIM_RELEASE_AFTER_TIMEOUT,
/*reduction*/0,
/*timeout*/1000,
/*getcount_only*/0);
}
softc->state = PMP_STATE_CLEAR;
softc->pm_step = 0;
}
xpt_release_ccb(done_ccb);
xpt_schedule(periph, priority);
return;
case PMP_STATE_CLEAR:
softc->pm_step++;
if (softc->pm_step >= softc->pm_ports) {
softc->state = PMP_STATE_CONFIG;
softc->pm_step = 0;
}
xpt_release_ccb(done_ccb);
xpt_schedule(periph, priority);
return;
case PMP_STATE_CONFIG:
if (softc->found) {
softc->pm_step = 0;
softc->state = PMP_STATE_SCAN;
work_ccb = xpt_alloc_ccb_nowait();
if (work_ccb != NULL)
goto do_scan;
xpt_release_ccb(done_ccb);
}
break;
case PMP_STATE_SCAN:
work_ccb = done_ccb;
done_ccb = (union ccb*)work_ccb->ccb_h.ppriv_ptr0;
/* Free the current request path- we're done with it. */
xpt_free_path(work_ccb->ccb_h.path);
softc->pm_step++;
do_scan:
while (softc->pm_step < softc->pm_ports &&
(softc->found & (1 << softc->pm_step)) == 0) {
softc->pm_step++;
}
if (softc->pm_step >= softc->pm_ports) {
xpt_free_ccb(work_ccb);
break;
}
if (xpt_create_path(&dpath, periph,
done_ccb->ccb_h.path_id,
softc->pm_step, 0) != CAM_REQ_CMP) {
printf("pmpdone: xpt_create_path failed"
", bus scan halted\n");
xpt_free_ccb(work_ccb);
break;
}
xpt_setup_ccb(&work_ccb->ccb_h, dpath,
done_ccb->ccb_h.pinfo.priority);
work_ccb->ccb_h.func_code = XPT_SCAN_LUN;
work_ccb->ccb_h.cbfcnp = pmpdone;
work_ccb->ccb_h.ppriv_ptr0 = done_ccb;
work_ccb->crcn.flags = done_ccb->crcn.flags;
xpt_action(work_ccb);
pmprelease(periph, 1 << softc->pm_step);
return;
default:
break;
}
done:
xpt_release_ccb(done_ccb);
softc->state = PMP_STATE_NORMAL;
pmprelease(periph, -1);
cam_periph_release_locked(periph);
}
#endif /* _KERNEL */
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