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freebsd-nq/sys/cam/ata/ata_da.c
Kenneth D. Merry a9934668aa Add asynchronous command support to the pass(4) driver, and the new 
camdd(8) utility.

CCBs may be queued to the driver via the new CAMIOQUEUE ioctl, and
completed CCBs may be retrieved via the CAMIOGET ioctl.  User
processes can use poll(2) or kevent(2) to get notification when
I/O has completed.

While the existing CAMIOCOMMAND blocking ioctl interface only
supports user virtual data pointers in a CCB (generally only
one per CCB), the new CAMIOQUEUE ioctl supports user virtual and
physical address pointers, as well as user virtual and physical
scatter/gather lists.  This allows user applications to have more
flexibility in their data handling operations.

Kernel memory for data transferred via the queued interface is
allocated from the zone allocator in MAXPHYS sized chunks, and user
data is copied in and out.  This is likely faster than the
vmapbuf()/vunmapbuf() method used by the CAMIOCOMMAND ioctl in
configurations with many processors (there are more TLB shootdowns
caused by the mapping/unmapping operation) but may not be as fast
as running with unmapped I/O.

The new memory handling model for user requests also allows
applications to send CCBs with request sizes that are larger than
MAXPHYS.  The pass(4) driver now limits queued requests to the I/O
size listed by the SIM driver in the maxio field in the Path
Inquiry (XPT_PATH_INQ) CCB.

There are some things things would be good to add:

1. Come up with a way to do unmapped I/O on multiple buffers.
   Currently the unmapped I/O interface operates on a struct bio,
   which includes only one address and length.  It would be nice
   to be able to send an unmapped scatter/gather list down to
   busdma.  This would allow eliminating the copy we currently do
   for data.

2. Add an ioctl to list currently outstanding CCBs in the various
   queues.

3. Add an ioctl to cancel a request, or use the XPT_ABORT CCB to do
   that.

4. Test physical address support.  Virtual pointers and scatter
   gather lists have been tested, but I have not yet tested
   physical addresses or scatter/gather lists.

5. Investigate multiple queue support.  At the moment there is one
   queue of commands per pass(4) device.  If multiple processes
   open the device, they will submit I/O into the same queue and
   get events for the same completions.  This is probably the right
   model for most applications, but it is something that could be
   changed later on.

Also, add a new utility, camdd(8) that uses the asynchronous pass(4)
driver interface.

This utility is intended to be a basic data transfer/copy utility,
a simple benchmark utility, and an example of how to use the
asynchronous pass(4) interface.

It can copy data to and from pass(4) devices using any target queue
depth, starting offset and blocksize for the input and ouptut devices.
It currently only supports SCSI devices, but could be easily extended
to support ATA devices.

It can also copy data to and from regular files, block devices, tape
devices, pipes, stdin, and stdout.  It does not support queueing
multiple commands to any of those targets, since it uses the standard
read(2)/write(2)/writev(2)/readv(2) system calls.

The I/O is done by two threads, one for the reader and one for the
writer.  The reader thread sends completed read requests to the
writer thread in strictly sequential order, even if they complete
out of order.  That could be modified later on for random I/O patterns
or slightly out of order I/O.

camdd(8) uses kqueue(2)/kevent(2) to get I/O completion events from
the pass(4) driver and also to send request notifications internally.

For pass(4) devcies, camdd(8) uses a single buffer (CAM_DATA_VADDR)
per CAM CCB on the reading side, and a scatter/gather list
(CAM_DATA_SG) on the writing side.  In addition to testing both
interfaces, this makes any potential reblocking of I/O easier.  No
data is copied between the reader and the writer, but rather the
reader's buffers are split into multiple I/O requests or combined
into a single I/O request depending on the input and output blocksize.

For the file I/O path, camdd(8) also uses a single buffer (read(2),
write(2), pread(2) or pwrite(2)) on reads, and a scatter/gather list
(readv(2), writev(2), preadv(2), pwritev(2)) on writes.

Things that would be nice to do for camdd(8) eventually:

1.  Add support for I/O pattern generation.  Patterns like all
    zeros, all ones, LBA-based patterns, random patterns, etc. Right
    Now you can always use /dev/zero, /dev/random, etc.

2.  Add support for a "sink" mode, so we do only reads with no
    writes.  Right now, you can use /dev/null.

3.  Add support for automatic queue depth probing, so that we can
    figure out the right queue depth on the input and output side
    for maximum throughput.  At the moment it defaults to 6.

4.  Add support for SATA device passthrough I/O.

5.  Add support for random LBAs and/or lengths on the input and
    output sides.

6.  Track average per-I/O latency and busy time.  The busy time
    and latency could also feed in to the automatic queue depth
    determination.

sys/cam/scsi/scsi_pass.h:
	Define two new ioctls, CAMIOQUEUE and CAMIOGET, that queue
	and fetch asynchronous CAM CCBs respectively.

	Although these ioctls do not have a declared argument, they
	both take a union ccb pointer.  If we declare a size here,
	the ioctl code in sys/kern/sys_generic.c will malloc and free
	a buffer for either the CCB or the CCB pointer (depending on
	how it is declared).  Since we have to keep a copy of the
	CCB (which is fairly large) anyway, having the ioctl malloc
	and free a CCB for each call is wasteful.

sys/cam/scsi/scsi_pass.c:
	Add asynchronous CCB support.

	Add two new ioctls, CAMIOQUEUE and CAMIOGET.

	CAMIOQUEUE adds a CCB to the incoming queue.  The CCB is
	executed immediately (and moved to the active queue) if it
	is an immediate CCB, but otherwise it will be executed
	in passstart() when a CCB is available from the transport layer.

	When CCBs are completed (because they are immediate or
	passdone() if they are queued), they are put on the done
	queue.

	If we get the final close on the device before all pending
	I/O is complete, all active I/O is moved to the abandoned
	queue and we increment the peripheral reference count so
	that the peripheral driver instance doesn't go away before
	all pending I/O is done.

	The new passcreatezone() function is called on the first
	call to the CAMIOQUEUE ioctl on a given device to allocate
	the UMA zones for I/O requests and S/G list buffers.  This
	may be good to move off to a taskqueue at some point.
	The new passmemsetup() function allocates memory and
	scatter/gather lists to hold the user's data, and copies
	in any data that needs to be written.  For virtual pointers
	(CAM_DATA_VADDR), the kernel buffer is malloced from the
	new pass(4) driver malloc bucket.  For virtual
	scatter/gather lists (CAM_DATA_SG), buffers are allocated
	from a new per-pass(9) UMA zone in MAXPHYS-sized chunks.
	Physical pointers are passed in unchanged.  We have support
	for up to 16 scatter/gather segments (for the user and
	kernel S/G lists) in the default struct pass_io_req, so
	requests with longer S/G lists require an extra kernel malloc.

	The new passcopysglist() function copies a user scatter/gather
	list to a kernel scatter/gather list.  The number of elements
	in each list may be different, but (obviously) the amount of data
	stored has to be identical.

	The new passmemdone() function copies data out for the
	CAM_DATA_VADDR and CAM_DATA_SG cases.

	The new passiocleanup() function restores data pointers in
	user CCBs and frees memory.

	Add new functions to support kqueue(2)/kevent(2):

	passreadfilt() tells kevent whether or not the done
	queue is empty.

	passkqfilter() adds a knote to our list.

	passreadfiltdetach() removes a knote from our list.

	Add a new function, passpoll(), for poll(2)/select(2)
	to use.

	Add devstat(9) support for the queued CCB path.

sys/cam/ata/ata_da.c:
	Add support for the BIO_VLIST bio type.

sys/cam/cam_ccb.h:
	Add a new enumeration for the xflags field in the CCB header.
	(This doesn't change the CCB header, just adds an enumeration to
	use.)

sys/cam/cam_xpt.c:
	Add a new function, xpt_setup_ccb_flags(), that allows specifying
	CCB flags.

sys/cam/cam_xpt.h:
	Add a prototype for xpt_setup_ccb_flags().

sys/cam/scsi/scsi_da.c:
	Add support for BIO_VLIST.

sys/dev/md/md.c:
	Add BIO_VLIST support to md(4).

sys/geom/geom_disk.c:
	Add BIO_VLIST support to the GEOM disk class.  Re-factor the I/O size
	limiting code in g_disk_start() a bit.

sys/kern/subr_bus_dma.c:
	Change _bus_dmamap_load_vlist() to take a starting offset and
	length.

	Add a new function, _bus_dmamap_load_pages(), that will load a list
	of physical pages starting at an offset.

	Update _bus_dmamap_load_bio() to allow loading BIO_VLIST bios.
	Allow unmapped I/O to start at an offset.

sys/kern/subr_uio.c:
	Add two new functions, physcopyin_vlist() and physcopyout_vlist().

sys/pc98/include/bus.h:
	Guard kernel-only parts of the pc98 machine/bus.h header with
	#ifdef _KERNEL.

	This allows userland programs to include <machine/bus.h> to get the
	definition of bus_addr_t and bus_size_t.

sys/sys/bio.h:
	Add a new bio flag, BIO_VLIST.

sys/sys/uio.h:
	Add prototypes for physcopyin_vlist() and physcopyout_vlist().

share/man/man4/pass.4:
	Document the CAMIOQUEUE and CAMIOGET ioctls.

usr.sbin/Makefile:
	Add camdd.

usr.sbin/camdd/Makefile:
	Add a makefile for camdd(8).

usr.sbin/camdd/camdd.8:
	Man page for camdd(8).

usr.sbin/camdd/camdd.c:
	The new camdd(8) utility.

Sponsored by:	Spectra Logic
MFC after:	1 week
2015-12-03 20:54:55 +00:00

2127 lines
57 KiB
C
Raw Blame History

/*-
* 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 "opt_ada.h"
#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 <sys/proc.h>
#include <sys/reboot.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_sim.h>
#include <cam/ata/ata_all.h>
#include <machine/md_var.h> /* geometry translation */
#ifdef _KERNEL
#define ATA_MAX_28BIT_LBA 268435455UL
typedef enum {
ADA_STATE_RAHEAD,
ADA_STATE_WCACHE,
ADA_STATE_NORMAL
} ada_state;
typedef enum {
ADA_FLAG_CAN_48BIT = 0x0002,
ADA_FLAG_CAN_FLUSHCACHE = 0x0004,
ADA_FLAG_CAN_NCQ = 0x0008,
ADA_FLAG_CAN_DMA = 0x0010,
ADA_FLAG_NEED_OTAG = 0x0020,
ADA_FLAG_WAS_OTAG = 0x0040,
ADA_FLAG_CAN_TRIM = 0x0080,
ADA_FLAG_OPEN = 0x0100,
ADA_FLAG_SCTX_INIT = 0x0200,
ADA_FLAG_CAN_CFA = 0x0400,
ADA_FLAG_CAN_POWERMGT = 0x0800,
ADA_FLAG_CAN_DMA48 = 0x1000,
ADA_FLAG_DIRTY = 0x2000
} ada_flags;
typedef enum {
ADA_Q_NONE = 0x00,
ADA_Q_4K = 0x01,
} ada_quirks;
#define ADA_Q_BIT_STRING \
"\020" \
"\0014K"
typedef enum {
ADA_CCB_RAHEAD = 0x01,
ADA_CCB_WCACHE = 0x02,
ADA_CCB_BUFFER_IO = 0x03,
ADA_CCB_DUMP = 0x05,
ADA_CCB_TRIM = 0x06,
ADA_CCB_TYPE_MASK = 0x0F,
} ada_ccb_state;
/* Offsets into our private area for storing information */
#define ccb_state ppriv_field0
#define ccb_bp ppriv_ptr1
struct disk_params {
u_int8_t heads;
u_int8_t secs_per_track;
u_int32_t cylinders;
u_int32_t secsize; /* Number of bytes/logical sector */
u_int64_t sectors; /* Total number sectors */
};
#define TRIM_MAX_BLOCKS 8
#define TRIM_MAX_RANGES (TRIM_MAX_BLOCKS * ATA_DSM_BLK_RANGES)
struct trim_request {
uint8_t data[TRIM_MAX_RANGES * ATA_DSM_RANGE_SIZE];
TAILQ_HEAD(, bio) bps;
};
struct ada_softc {
struct bio_queue_head bio_queue;
struct bio_queue_head trim_queue;
int outstanding_cmds; /* Number of active commands */
int refcount; /* Active xpt_action() calls */
ada_state state;
ada_flags flags;
ada_quirks quirks;
int sort_io_queue;
int trim_max_ranges;
int trim_running;
int read_ahead;
int write_cache;
#ifdef ADA_TEST_FAILURE
int force_read_error;
int force_write_error;
int periodic_read_error;
int periodic_read_count;
#endif
struct disk_params params;
struct disk *disk;
struct task sysctl_task;
struct sysctl_ctx_list sysctl_ctx;
struct sysctl_oid *sysctl_tree;
struct callout sendordered_c;
struct trim_request trim_req;
};
struct ada_quirk_entry {
struct scsi_inquiry_pattern inq_pat;
ada_quirks quirks;
};
static struct ada_quirk_entry ada_quirk_table[] =
{
{
/* Hitachi Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "Hitachi H??????????E3*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Samsung Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "SAMSUNG HD155UI*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Samsung Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "SAMSUNG HD204UI*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Seagate Barracuda Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "ST????DL*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Seagate Barracuda Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "ST???DM*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Seagate Barracuda Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "ST????DM*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9500423AS*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9500424AS*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9640423AS*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9640424AS*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9750420AS*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9750422AS*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9750423AS*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Seagate Momentus Thin Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "ST???LT*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* WDC Caviar Red Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD????CX*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* WDC Caviar Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD????RS*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* WDC Caviar Green/Red Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD????RX*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* WDC Caviar Red Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD??????CX*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* WDC Caviar Black Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD??????EX*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* WDC Caviar Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD??????RS*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* WDC Caviar Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD??????RX*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* WDC Scorpio Black Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD???PKT*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* WDC Scorpio Black Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD?????PKT*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* WDC Scorpio Blue Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD???PVT*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* WDC Scorpio Blue Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD?????PVT*", "*" },
/*quirks*/ADA_Q_4K
},
/* SSDs */
{
/*
* Corsair Force 2 SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "Corsair CSSD-F*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Corsair Force 3 SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "Corsair Force 3*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Corsair Neutron GTX SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "Corsair Neutron GTX*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Corsair Force GT & GS SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "Corsair Force G*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Crucial M4 SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "M4-CT???M4SSD2*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Crucial RealSSD C300 SSDs
* 4k optimised
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "C300-CTFDDAC???MAG*",
"*" }, /*quirks*/ADA_Q_4K
},
{
/*
* Intel 320 Series SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "INTEL SSDSA2CW*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Intel 330 Series SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "INTEL SSDSC2CT*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Intel 510 Series SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "INTEL SSDSC2MH*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Intel 520 Series SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "INTEL SSDSC2BW*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Intel X25-M Series SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "INTEL SSDSA2M*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Kingston E100 Series SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "KINGSTON SE100S3*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Kingston HyperX 3k SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "KINGSTON SH103S3*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Marvell SSDs (entry taken from OpenSolaris)
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "MARVELL SD88SA02*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* OCZ Agility 2 SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "OCZ-AGILITY2*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* OCZ Agility 3 SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "OCZ-AGILITY3*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* OCZ Deneva R Series SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "DENRSTE251M45*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* OCZ Vertex 2 SSDs (inc pro series)
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "OCZ?VERTEX2*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* OCZ Vertex 3 SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "OCZ-VERTEX3*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* OCZ Vertex 4 SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "OCZ-VERTEX4*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Samsung 830 Series SSDs
* 4k optimised
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "SAMSUNG SSD 830 Series*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Samsung 840 SSDs
* 4k optimised
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "Samsung SSD 840*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Samsung 843T Series SSDs
* 4k optimised
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "SAMSUNG MZ7WD*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Samsung 850 SSDs
* 4k optimised
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "Samsung SSD 850*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Samsung PM853T Series SSDs
* 4k optimised
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "SAMSUNG MZ7GE*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* SuperTalent TeraDrive CT SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "FTM??CT25H*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* XceedIOPS SATA SSDs
* 4k optimised
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "SG9XCS2D*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Default */
{
T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
/*vendor*/"*", /*product*/"*", /*revision*/"*"
},
/*quirks*/0
},
};
static disk_strategy_t adastrategy;
static dumper_t adadump;
static periph_init_t adainit;
static void adaasync(void *callback_arg, u_int32_t code,
struct cam_path *path, void *arg);
static void adasysctlinit(void *context, int pending);
static periph_ctor_t adaregister;
static periph_dtor_t adacleanup;
static periph_start_t adastart;
static periph_oninv_t adaoninvalidate;
static void adadone(struct cam_periph *periph,
union ccb *done_ccb);
static int adaerror(union ccb *ccb, u_int32_t cam_flags,
u_int32_t sense_flags);
static void adagetparams(struct cam_periph *periph,
struct ccb_getdev *cgd);
static timeout_t adasendorderedtag;
static void adashutdown(void *arg, int howto);
static void adasuspend(void *arg);
static void adaresume(void *arg);
#ifndef ADA_DEFAULT_LEGACY_ALIASES
#define ADA_DEFAULT_LEGACY_ALIASES 1
#endif
#ifndef ADA_DEFAULT_TIMEOUT
#define ADA_DEFAULT_TIMEOUT 30 /* Timeout in seconds */
#endif
#ifndef ADA_DEFAULT_RETRY
#define ADA_DEFAULT_RETRY 4
#endif
#ifndef ADA_DEFAULT_SEND_ORDERED
#define ADA_DEFAULT_SEND_ORDERED 1
#endif
#ifndef ADA_DEFAULT_SPINDOWN_SHUTDOWN
#define ADA_DEFAULT_SPINDOWN_SHUTDOWN 1
#endif
#ifndef ADA_DEFAULT_SPINDOWN_SUSPEND
#define ADA_DEFAULT_SPINDOWN_SUSPEND 1
#endif
#ifndef ADA_DEFAULT_READ_AHEAD
#define ADA_DEFAULT_READ_AHEAD 1
#endif
#ifndef ADA_DEFAULT_WRITE_CACHE
#define ADA_DEFAULT_WRITE_CACHE 1
#endif
#define ADA_RA (softc->read_ahead >= 0 ? \
softc->read_ahead : ada_read_ahead)
#define ADA_WC (softc->write_cache >= 0 ? \
softc->write_cache : ada_write_cache)
#define ADA_SIO (softc->sort_io_queue >= 0 ? \
softc->sort_io_queue : cam_sort_io_queues)
/*
* Most platforms map firmware geometry to actual, but some don't. If
* not overridden, default to nothing.
*/
#ifndef ata_disk_firmware_geom_adjust
#define ata_disk_firmware_geom_adjust(disk)
#endif
static int ada_retry_count = ADA_DEFAULT_RETRY;
static int ada_default_timeout = ADA_DEFAULT_TIMEOUT;
static int ada_send_ordered = ADA_DEFAULT_SEND_ORDERED;
static int ada_spindown_shutdown = ADA_DEFAULT_SPINDOWN_SHUTDOWN;
static int ada_spindown_suspend = ADA_DEFAULT_SPINDOWN_SUSPEND;
static int ada_read_ahead = ADA_DEFAULT_READ_AHEAD;
static int ada_write_cache = ADA_DEFAULT_WRITE_CACHE;
static SYSCTL_NODE(_kern_cam, OID_AUTO, ada, CTLFLAG_RD, 0,
"CAM Direct Access Disk driver");
SYSCTL_INT(_kern_cam_ada, OID_AUTO, retry_count, CTLFLAG_RWTUN,
&ada_retry_count, 0, "Normal I/O retry count");
SYSCTL_INT(_kern_cam_ada, OID_AUTO, default_timeout, CTLFLAG_RWTUN,
&ada_default_timeout, 0, "Normal I/O timeout (in seconds)");
SYSCTL_INT(_kern_cam_ada, OID_AUTO, send_ordered, CTLFLAG_RWTUN,
&ada_send_ordered, 0, "Send Ordered Tags");
SYSCTL_INT(_kern_cam_ada, OID_AUTO, spindown_shutdown, CTLFLAG_RWTUN,
&ada_spindown_shutdown, 0, "Spin down upon shutdown");
SYSCTL_INT(_kern_cam_ada, OID_AUTO, spindown_suspend, CTLFLAG_RWTUN,
&ada_spindown_suspend, 0, "Spin down upon suspend");
SYSCTL_INT(_kern_cam_ada, OID_AUTO, read_ahead, CTLFLAG_RWTUN,
&ada_read_ahead, 0, "Enable disk read-ahead");
SYSCTL_INT(_kern_cam_ada, OID_AUTO, write_cache, CTLFLAG_RWTUN,
&ada_write_cache, 0, "Enable disk write cache");
/*
* ADA_ORDEREDTAG_INTERVAL determines how often, relative
* to the default timeout, we check to see whether an ordered
* tagged transaction is appropriate to prevent simple tag
* starvation. Since we'd like to ensure that there is at least
* 1/2 of the timeout length left for a starved transaction to
* complete after we've sent an ordered tag, we must poll at least
* four times in every timeout period. This takes care of the worst
* case where a starved transaction starts during an interval that
* meets the requirement "don't send an ordered tag" test so it takes
* us two intervals to determine that a tag must be sent.
*/
#ifndef ADA_ORDEREDTAG_INTERVAL
#define ADA_ORDEREDTAG_INTERVAL 4
#endif
static struct periph_driver adadriver =
{
adainit, "ada",
TAILQ_HEAD_INITIALIZER(adadriver.units), /* generation */ 0
};
PERIPHDRIVER_DECLARE(ada, adadriver);
static int
adaopen(struct disk *dp)
{
struct cam_periph *periph;
struct ada_softc *softc;
int error;
periph = (struct cam_periph *)dp->d_drv1;
if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
return(ENXIO);
}
cam_periph_lock(periph);
if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) {
cam_periph_unlock(periph);
cam_periph_release(periph);
return (error);
}
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH,
("adaopen\n"));
softc = (struct ada_softc *)periph->softc;
softc->flags |= ADA_FLAG_OPEN;
cam_periph_unhold(periph);
cam_periph_unlock(periph);
return (0);
}
static int
adaclose(struct disk *dp)
{
struct cam_periph *periph;
struct ada_softc *softc;
union ccb *ccb;
int error;
periph = (struct cam_periph *)dp->d_drv1;
softc = (struct ada_softc *)periph->softc;
cam_periph_lock(periph);
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH,
("adaclose\n"));
/* We only sync the cache if the drive is capable of it. */
if ((softc->flags & ADA_FLAG_DIRTY) != 0 &&
(softc->flags & ADA_FLAG_CAN_FLUSHCACHE) != 0 &&
(periph->flags & CAM_PERIPH_INVALID) == 0 &&
cam_periph_hold(periph, PRIBIO) == 0) {
ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
cam_fill_ataio(&ccb->ataio,
1,
adadone,
CAM_DIR_NONE,
0,
NULL,
0,
ada_default_timeout*1000);
if (softc->flags & ADA_FLAG_CAN_48BIT)
ata_48bit_cmd(&ccb->ataio, ATA_FLUSHCACHE48, 0, 0, 0);
else
ata_28bit_cmd(&ccb->ataio, ATA_FLUSHCACHE, 0, 0, 0);
error = cam_periph_runccb(ccb, adaerror, /*cam_flags*/0,
/*sense_flags*/0, softc->disk->d_devstat);
if (error != 0)
xpt_print(periph->path, "Synchronize cache failed\n");
else
softc->flags &= ~ADA_FLAG_DIRTY;
xpt_release_ccb(ccb);
cam_periph_unhold(periph);
}
softc->flags &= ~ADA_FLAG_OPEN;
while (softc->refcount != 0)
cam_periph_sleep(periph, &softc->refcount, PRIBIO, "adaclose", 1);
cam_periph_unlock(periph);
cam_periph_release(periph);
return (0);
}
static void
adaschedule(struct cam_periph *periph)
{
struct ada_softc *softc = (struct ada_softc *)periph->softc;
if (softc->state != ADA_STATE_NORMAL)
return;
/* Check if we have more work to do. */
if (bioq_first(&softc->bio_queue) ||
(!softc->trim_running && bioq_first(&softc->trim_queue))) {
xpt_schedule(periph, CAM_PRIORITY_NORMAL);
}
}
/*
* Actually translate the requested transfer into one the physical driver
* can understand. The transfer is described by a buf and will include
* only one physical transfer.
*/
static void
adastrategy(struct bio *bp)
{
struct cam_periph *periph;
struct ada_softc *softc;
periph = (struct cam_periph *)bp->bio_disk->d_drv1;
softc = (struct ada_softc *)periph->softc;
cam_periph_lock(periph);
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("adastrategy(%p)\n", bp));
/*
* If the device has been made invalid, error out
*/
if ((periph->flags & CAM_PERIPH_INVALID) != 0) {
cam_periph_unlock(periph);
biofinish(bp, NULL, ENXIO);
return;
}
/*
* Place it in the queue of disk activities for this disk
*/
if (bp->bio_cmd == BIO_DELETE) {
bioq_disksort(&softc->trim_queue, bp);
} else {
if (ADA_SIO)
bioq_disksort(&softc->bio_queue, bp);
else
bioq_insert_tail(&softc->bio_queue, bp);
}
/*
* Schedule ourselves for performing the work.
*/
adaschedule(periph);
cam_periph_unlock(periph);
return;
}
static int
adadump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length)
{
struct cam_periph *periph;
struct ada_softc *softc;
u_int secsize;
union ccb ccb;
struct disk *dp;
uint64_t lba;
uint16_t count;
int error = 0;
dp = arg;
periph = dp->d_drv1;
softc = (struct ada_softc *)periph->softc;
cam_periph_lock(periph);
secsize = softc->params.secsize;
lba = offset / secsize;
count = length / secsize;
if ((periph->flags & CAM_PERIPH_INVALID) != 0) {
cam_periph_unlock(periph);
return (ENXIO);
}
if (length > 0) {
xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
ccb.ccb_h.ccb_state = ADA_CCB_DUMP;
cam_fill_ataio(&ccb.ataio,
0,
adadone,
CAM_DIR_OUT,
0,
(u_int8_t *) virtual,
length,
ada_default_timeout*1000);
if ((softc->flags & ADA_FLAG_CAN_48BIT) &&
(lba + count >= ATA_MAX_28BIT_LBA ||
count >= 256)) {
ata_48bit_cmd(&ccb.ataio, ATA_WRITE_DMA48,
0, lba, count);
} else {
ata_28bit_cmd(&ccb.ataio, ATA_WRITE_DMA,
0, lba, count);
}
xpt_polled_action(&ccb);
error = cam_periph_error(&ccb,
0, SF_NO_RECOVERY | SF_NO_RETRY, NULL);
if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(ccb.ccb_h.path, /*relsim_flags*/0,
/*reduction*/0, /*timeout*/0, /*getcount_only*/0);
if (error != 0)
printf("Aborting dump due to I/O error.\n");
cam_periph_unlock(periph);
return (error);
}
if (softc->flags & ADA_FLAG_CAN_FLUSHCACHE) {
xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
ccb.ccb_h.ccb_state = ADA_CCB_DUMP;
cam_fill_ataio(&ccb.ataio,
0,
adadone,
CAM_DIR_NONE,
0,
NULL,
0,
ada_default_timeout*1000);
if (softc->flags & ADA_FLAG_CAN_48BIT)
ata_48bit_cmd(&ccb.ataio, ATA_FLUSHCACHE48, 0, 0, 0);
else
ata_28bit_cmd(&ccb.ataio, ATA_FLUSHCACHE, 0, 0, 0);
xpt_polled_action(&ccb);
error = cam_periph_error(&ccb,
0, SF_NO_RECOVERY | SF_NO_RETRY, NULL);
if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(ccb.ccb_h.path, /*relsim_flags*/0,
/*reduction*/0, /*timeout*/0, /*getcount_only*/0);
if (error != 0)
xpt_print(periph->path, "Synchronize cache failed\n");
}
cam_periph_unlock(periph);
return (error);
}
static void
adainit(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, adaasync, NULL, NULL);
if (status != CAM_REQ_CMP) {
printf("ada: Failed to attach master async callback "
"due to status 0x%x!\n", status);
} else if (ada_send_ordered) {
/* Register our event handlers */
if ((EVENTHANDLER_REGISTER(power_suspend, adasuspend,
NULL, EVENTHANDLER_PRI_LAST)) == NULL)
printf("adainit: power event registration failed!\n");
if ((EVENTHANDLER_REGISTER(power_resume, adaresume,
NULL, EVENTHANDLER_PRI_LAST)) == NULL)
printf("adainit: power event registration failed!\n");
if ((EVENTHANDLER_REGISTER(shutdown_post_sync, adashutdown,
NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
printf("adainit: shutdown event registration failed!\n");
}
}
/*
* Callback from GEOM, called when it has finished cleaning up its
* resources.
*/
static void
adadiskgonecb(struct disk *dp)
{
struct cam_periph *periph;
periph = (struct cam_periph *)dp->d_drv1;
cam_periph_release(periph);
}
static void
adaoninvalidate(struct cam_periph *periph)
{
struct ada_softc *softc;
softc = (struct ada_softc *)periph->softc;
/*
* De-register any async callbacks.
*/
xpt_register_async(0, adaasync, periph, periph->path);
/*
* Return all queued I/O with ENXIO.
* XXX Handle any transactions queued to the card
* with XPT_ABORT_CCB.
*/
bioq_flush(&softc->bio_queue, NULL, ENXIO);
bioq_flush(&softc->trim_queue, NULL, ENXIO);
disk_gone(softc->disk);
}
static void
adacleanup(struct cam_periph *periph)
{
struct ada_softc *softc;
softc = (struct ada_softc *)periph->softc;
cam_periph_unlock(periph);
/*
* If we can't free the sysctl tree, oh well...
*/
if ((softc->flags & ADA_FLAG_SCTX_INIT) != 0
&& sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
xpt_print(periph->path, "can't remove sysctl context\n");
}
disk_destroy(softc->disk);
callout_drain(&softc->sendordered_c);
free(softc, M_DEVBUF);
cam_periph_lock(periph);
}
static void
adaasync(void *callback_arg, u_int32_t code,
struct cam_path *path, void *arg)
{
struct ccb_getdev cgd;
struct cam_periph *periph;
struct ada_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_ATA)
break;
/*
* Allocate a peripheral instance for
* this device and start the probe
* process.
*/
status = cam_periph_alloc(adaregister, adaoninvalidate,
adacleanup, adastart,
"ada", CAM_PERIPH_BIO,
path, adaasync,
AC_FOUND_DEVICE, cgd);
if (status != CAM_REQ_CMP
&& status != CAM_REQ_INPROG)
printf("adaasync: Unable to attach to new device "
"due to status 0x%x\n", status);
break;
}
case AC_GETDEV_CHANGED:
{
softc = (struct ada_softc *)periph->softc;
xpt_setup_ccb(&cgd.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
cgd.ccb_h.func_code = XPT_GDEV_TYPE;
xpt_action((union ccb *)&cgd);
if ((cgd.ident_data.capabilities1 & ATA_SUPPORT_DMA) &&
(cgd.inq_flags & SID_DMA))
softc->flags |= ADA_FLAG_CAN_DMA;
else
softc->flags &= ~ADA_FLAG_CAN_DMA;
if (cgd.ident_data.support.command2 & ATA_SUPPORT_ADDRESS48) {
softc->flags |= ADA_FLAG_CAN_48BIT;
if (cgd.inq_flags & SID_DMA48)
softc->flags |= ADA_FLAG_CAN_DMA48;
else
softc->flags &= ~ADA_FLAG_CAN_DMA48;
} else
softc->flags &= ~(ADA_FLAG_CAN_48BIT |
ADA_FLAG_CAN_DMA48);
if ((cgd.ident_data.satacapabilities & ATA_SUPPORT_NCQ) &&
(cgd.inq_flags & SID_DMA) && (cgd.inq_flags & SID_CmdQue))
softc->flags |= ADA_FLAG_CAN_NCQ;
else
softc->flags &= ~ADA_FLAG_CAN_NCQ;
if ((cgd.ident_data.support_dsm & ATA_SUPPORT_DSM_TRIM) &&
(cgd.inq_flags & SID_DMA))
softc->flags |= ADA_FLAG_CAN_TRIM;
else
softc->flags &= ~ADA_FLAG_CAN_TRIM;
cam_periph_async(periph, code, path, arg);
break;
}
case AC_ADVINFO_CHANGED:
{
uintptr_t buftype;
buftype = (uintptr_t)arg;
if (buftype == CDAI_TYPE_PHYS_PATH) {
struct ada_softc *softc;
softc = periph->softc;
disk_attr_changed(softc->disk, "GEOM::physpath",
M_NOWAIT);
}
break;
}
case AC_SENT_BDR:
case AC_BUS_RESET:
{
softc = (struct ada_softc *)periph->softc;
cam_periph_async(periph, code, path, arg);
if (softc->state != ADA_STATE_NORMAL)
break;
xpt_setup_ccb(&cgd.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
cgd.ccb_h.func_code = XPT_GDEV_TYPE;
xpt_action((union ccb *)&cgd);
if (ADA_RA >= 0 &&
cgd.ident_data.support.command1 & ATA_SUPPORT_LOOKAHEAD)
softc->state = ADA_STATE_RAHEAD;
else if (ADA_WC >= 0 &&
cgd.ident_data.support.command1 & ATA_SUPPORT_WRITECACHE)
softc->state = ADA_STATE_WCACHE;
else
break;
if (cam_periph_acquire(periph) != CAM_REQ_CMP)
softc->state = ADA_STATE_NORMAL;
else
xpt_schedule(periph, CAM_PRIORITY_DEV);
}
default:
cam_periph_async(periph, code, path, arg);
break;
}
}
static void
adasysctlinit(void *context, int pending)
{
struct cam_periph *periph;
struct ada_softc *softc;
char tmpstr[80], tmpstr2[80];
periph = (struct cam_periph *)context;
/* periph was held for us when this task was enqueued */
if ((periph->flags & CAM_PERIPH_INVALID) != 0) {
cam_periph_release(periph);
return;
}
softc = (struct ada_softc *)periph->softc;
snprintf(tmpstr, sizeof(tmpstr), "CAM ADA unit %d", periph->unit_number);
snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
sysctl_ctx_init(&softc->sysctl_ctx);
softc->flags |= ADA_FLAG_SCTX_INIT;
softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
SYSCTL_STATIC_CHILDREN(_kern_cam_ada), OID_AUTO, tmpstr2,
CTLFLAG_RD, 0, tmpstr);
if (softc->sysctl_tree == NULL) {
printf("adasysctlinit: unable to allocate sysctl tree\n");
cam_periph_release(periph);
return;
}
SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
OID_AUTO, "read_ahead", CTLFLAG_RW | CTLFLAG_MPSAFE,
&softc->read_ahead, 0, "Enable disk read ahead.");
SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
OID_AUTO, "write_cache", CTLFLAG_RW | CTLFLAG_MPSAFE,
&softc->write_cache, 0, "Enable disk write cache.");
SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
OID_AUTO, "sort_io_queue", CTLFLAG_RW | CTLFLAG_MPSAFE,
&softc->sort_io_queue, 0,
"Sort IO queue to try and optimise disk access patterns");
#ifdef ADA_TEST_FAILURE
/*
* Add a 'door bell' sysctl which allows one to set it from userland
* and cause something bad to happen. For the moment, we only allow
* whacking the next read or write.
*/
SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
OID_AUTO, "force_read_error", CTLFLAG_RW | CTLFLAG_MPSAFE,
&softc->force_read_error, 0,
"Force a read error for the next N reads.");
SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
OID_AUTO, "force_write_error", CTLFLAG_RW | CTLFLAG_MPSAFE,
&softc->force_write_error, 0,
"Force a write error for the next N writes.");
SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
OID_AUTO, "periodic_read_error", CTLFLAG_RW | CTLFLAG_MPSAFE,
&softc->periodic_read_error, 0,
"Force a read error every N reads (don't set too low).");
#endif
cam_periph_release(periph);
}
static int
adagetattr(struct bio *bp)
{
int ret;
struct cam_periph *periph;
periph = (struct cam_periph *)bp->bio_disk->d_drv1;
cam_periph_lock(periph);
ret = xpt_getattr(bp->bio_data, bp->bio_length, bp->bio_attribute,
periph->path);
cam_periph_unlock(periph);
if (ret == 0)
bp->bio_completed = bp->bio_length;
return ret;
}
static cam_status
adaregister(struct cam_periph *periph, void *arg)
{
struct ada_softc *softc;
struct ccb_pathinq cpi;
struct ccb_getdev *cgd;
char announce_buf[80];
struct disk_params *dp;
caddr_t match;
u_int maxio;
int quirks;
cgd = (struct ccb_getdev *)arg;
if (cgd == NULL) {
printf("adaregister: no getdev CCB, can't register device\n");
return(CAM_REQ_CMP_ERR);
}
softc = (struct ada_softc *)malloc(sizeof(*softc), M_DEVBUF,
M_NOWAIT|M_ZERO);
if (softc == NULL) {
printf("adaregister: Unable to probe new device. "
"Unable to allocate softc\n");
return(CAM_REQ_CMP_ERR);
}
bioq_init(&softc->bio_queue);
bioq_init(&softc->trim_queue);
if ((cgd->ident_data.capabilities1 & ATA_SUPPORT_DMA) &&
(cgd->inq_flags & SID_DMA))
softc->flags |= ADA_FLAG_CAN_DMA;
if (cgd->ident_data.support.command2 & ATA_SUPPORT_ADDRESS48) {
softc->flags |= ADA_FLAG_CAN_48BIT;
if (cgd->inq_flags & SID_DMA48)
softc->flags |= ADA_FLAG_CAN_DMA48;
}
if (cgd->ident_data.support.command2 & ATA_SUPPORT_FLUSHCACHE)
softc->flags |= ADA_FLAG_CAN_FLUSHCACHE;
if (cgd->ident_data.support.command1 & ATA_SUPPORT_POWERMGT)
softc->flags |= ADA_FLAG_CAN_POWERMGT;
if ((cgd->ident_data.satacapabilities & ATA_SUPPORT_NCQ) &&
(cgd->inq_flags & SID_DMA) && (cgd->inq_flags & SID_CmdQue))
softc->flags |= ADA_FLAG_CAN_NCQ;
if ((cgd->ident_data.support_dsm & ATA_SUPPORT_DSM_TRIM) &&
(cgd->inq_flags & SID_DMA)) {
softc->flags |= ADA_FLAG_CAN_TRIM;
softc->trim_max_ranges = TRIM_MAX_RANGES;
if (cgd->ident_data.max_dsm_blocks != 0) {
softc->trim_max_ranges =
min(cgd->ident_data.max_dsm_blocks *
ATA_DSM_BLK_RANGES, softc->trim_max_ranges);
}
}
if (cgd->ident_data.support.command2 & ATA_SUPPORT_CFA)
softc->flags |= ADA_FLAG_CAN_CFA;
periph->softc = softc;
/*
* See if this device has any quirks.
*/
match = cam_quirkmatch((caddr_t)&cgd->ident_data,
(caddr_t)ada_quirk_table,
sizeof(ada_quirk_table)/sizeof(*ada_quirk_table),
sizeof(*ada_quirk_table), ata_identify_match);
if (match != NULL)
softc->quirks = ((struct ada_quirk_entry *)match)->quirks;
else
softc->quirks = ADA_Q_NONE;
bzero(&cpi, sizeof(cpi));
xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NONE);
cpi.ccb_h.func_code = XPT_PATH_INQ;
xpt_action((union ccb *)&cpi);
TASK_INIT(&softc->sysctl_task, 0, adasysctlinit, periph);
/*
* Register this media as a disk
*/
(void)cam_periph_hold(periph, PRIBIO);
cam_periph_unlock(periph);
snprintf(announce_buf, sizeof(announce_buf),
"kern.cam.ada.%d.quirks", periph->unit_number);
quirks = softc->quirks;
TUNABLE_INT_FETCH(announce_buf, &quirks);
softc->quirks = quirks;
softc->read_ahead = -1;
snprintf(announce_buf, sizeof(announce_buf),
"kern.cam.ada.%d.read_ahead", periph->unit_number);
TUNABLE_INT_FETCH(announce_buf, &softc->read_ahead);
softc->write_cache = -1;
snprintf(announce_buf, sizeof(announce_buf),
"kern.cam.ada.%d.write_cache", periph->unit_number);
TUNABLE_INT_FETCH(announce_buf, &softc->write_cache);
/* Disable queue sorting for non-rotational media by default. */
if (cgd->ident_data.media_rotation_rate == ATA_RATE_NON_ROTATING)
softc->sort_io_queue = 0;
else
softc->sort_io_queue = -1;
adagetparams(periph, cgd);
softc->disk = disk_alloc();
softc->disk->d_rotation_rate = cgd->ident_data.media_rotation_rate;
softc->disk->d_devstat = devstat_new_entry(periph->periph_name,
periph->unit_number, softc->params.secsize,
DEVSTAT_ALL_SUPPORTED,
DEVSTAT_TYPE_DIRECT |
XPORT_DEVSTAT_TYPE(cpi.transport),
DEVSTAT_PRIORITY_DISK);
softc->disk->d_open = adaopen;
softc->disk->d_close = adaclose;
softc->disk->d_strategy = adastrategy;
softc->disk->d_getattr = adagetattr;
softc->disk->d_dump = adadump;
softc->disk->d_gone = adadiskgonecb;
softc->disk->d_name = "ada";
softc->disk->d_drv1 = periph;
maxio = cpi.maxio; /* Honor max I/O size of SIM */
if (maxio == 0)
maxio = DFLTPHYS; /* traditional default */
else if (maxio > MAXPHYS)
maxio = MAXPHYS; /* for safety */
if (softc->flags & ADA_FLAG_CAN_48BIT)
maxio = min(maxio, 65536 * softc->params.secsize);
else /* 28bit ATA command limit */
maxio = min(maxio, 256 * softc->params.secsize);
softc->disk->d_maxsize = maxio;
softc->disk->d_unit = periph->unit_number;
softc->disk->d_flags = DISKFLAG_DIRECT_COMPLETION;
if (softc->flags & ADA_FLAG_CAN_FLUSHCACHE)
softc->disk->d_flags |= DISKFLAG_CANFLUSHCACHE;
if (softc->flags & ADA_FLAG_CAN_TRIM) {
softc->disk->d_flags |= DISKFLAG_CANDELETE;
softc->disk->d_delmaxsize = softc->params.secsize *
ATA_DSM_RANGE_MAX *
softc->trim_max_ranges;
} else if ((softc->flags & ADA_FLAG_CAN_CFA) &&
!(softc->flags & ADA_FLAG_CAN_48BIT)) {
softc->disk->d_flags |= DISKFLAG_CANDELETE;
softc->disk->d_delmaxsize = 256 * softc->params.secsize;
} else
softc->disk->d_delmaxsize = maxio;
if ((cpi.hba_misc & PIM_UNMAPPED) != 0)
softc->disk->d_flags |= DISKFLAG_UNMAPPED_BIO;
strlcpy(softc->disk->d_descr, cgd->ident_data.model,
MIN(sizeof(softc->disk->d_descr), sizeof(cgd->ident_data.model)));
strlcpy(softc->disk->d_ident, cgd->ident_data.serial,
MIN(sizeof(softc->disk->d_ident), sizeof(cgd->ident_data.serial)));
softc->disk->d_hba_vendor = cpi.hba_vendor;
softc->disk->d_hba_device = cpi.hba_device;
softc->disk->d_hba_subvendor = cpi.hba_subvendor;
softc->disk->d_hba_subdevice = cpi.hba_subdevice;
softc->disk->d_sectorsize = softc->params.secsize;
softc->disk->d_mediasize = (off_t)softc->params.sectors *
softc->params.secsize;
if (ata_physical_sector_size(&cgd->ident_data) !=
softc->params.secsize) {
softc->disk->d_stripesize =
ata_physical_sector_size(&cgd->ident_data);
softc->disk->d_stripeoffset = (softc->disk->d_stripesize -
ata_logical_sector_offset(&cgd->ident_data)) %
softc->disk->d_stripesize;
} else if (softc->quirks & ADA_Q_4K) {
softc->disk->d_stripesize = 4096;
softc->disk->d_stripeoffset = 0;
}
softc->disk->d_fwsectors = softc->params.secs_per_track;
softc->disk->d_fwheads = softc->params.heads;
ata_disk_firmware_geom_adjust(softc->disk);
/*
* Acquire a reference to the periph before we register with GEOM.
* We'll release this reference once GEOM calls us back (via
* adadiskgonecb()) telling us that our provider has been freed.
*/
if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
xpt_print(periph->path, "%s: lost periph during "
"registration!\n", __func__);
cam_periph_lock(periph);
return (CAM_REQ_CMP_ERR);
}
disk_create(softc->disk, DISK_VERSION);
cam_periph_lock(periph);
cam_periph_unhold(periph);
dp = &softc->params;
snprintf(announce_buf, sizeof(announce_buf),
"%juMB (%ju %u byte sectors)",
((uintmax_t)dp->secsize * dp->sectors) / (1024 * 1024),
(uintmax_t)dp->sectors, dp->secsize);
xpt_announce_periph(periph, announce_buf);
xpt_announce_quirks(periph, softc->quirks, ADA_Q_BIT_STRING);
/*
* Create our sysctl variables, now that we know
* we have successfully attached.
*/
if (cam_periph_acquire(periph) == CAM_REQ_CMP)
taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task);
/*
* 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_GETDEV_CHANGED | AC_ADVINFO_CHANGED,
adaasync, periph, periph->path);
/*
* Schedule a periodic event to occasionally send an
* ordered tag to a device.
*/
callout_init_mtx(&softc->sendordered_c, cam_periph_mtx(periph), 0);
callout_reset(&softc->sendordered_c,
(ada_default_timeout * hz) / ADA_ORDEREDTAG_INTERVAL,
adasendorderedtag, softc);
if (ADA_RA >= 0 &&
cgd->ident_data.support.command1 & ATA_SUPPORT_LOOKAHEAD) {
softc->state = ADA_STATE_RAHEAD;
} else if (ADA_WC >= 0 &&
cgd->ident_data.support.command1 & ATA_SUPPORT_WRITECACHE) {
softc->state = ADA_STATE_WCACHE;
} else {
softc->state = ADA_STATE_NORMAL;
return(CAM_REQ_CMP);
}
if (cam_periph_acquire(periph) != CAM_REQ_CMP)
softc->state = ADA_STATE_NORMAL;
else
xpt_schedule(periph, CAM_PRIORITY_DEV);
return(CAM_REQ_CMP);
}
static void
ada_dsmtrim(struct ada_softc *softc, struct bio *bp, struct ccb_ataio *ataio)
{
struct trim_request *req = &softc->trim_req;
uint64_t lastlba = (uint64_t)-1;
int c, lastcount = 0, off, ranges = 0;
bzero(req, sizeof(*req));
TAILQ_INIT(&req->bps);
do {
uint64_t lba = bp->bio_pblkno;
int count = bp->bio_bcount / softc->params.secsize;
bioq_remove(&softc->trim_queue, bp);
/* Try to extend the previous range. */
if (lba == lastlba) {
c = min(count, ATA_DSM_RANGE_MAX - lastcount);
lastcount += c;
off = (ranges - 1) * ATA_DSM_RANGE_SIZE;
req->data[off + 6] = lastcount & 0xff;
req->data[off + 7] =
(lastcount >> 8) & 0xff;
count -= c;
lba += c;
}
while (count > 0) {
c = min(count, ATA_DSM_RANGE_MAX);
off = ranges * ATA_DSM_RANGE_SIZE;
req->data[off + 0] = lba & 0xff;
req->data[off + 1] = (lba >> 8) & 0xff;
req->data[off + 2] = (lba >> 16) & 0xff;
req->data[off + 3] = (lba >> 24) & 0xff;
req->data[off + 4] = (lba >> 32) & 0xff;
req->data[off + 5] = (lba >> 40) & 0xff;
req->data[off + 6] = c & 0xff;
req->data[off + 7] = (c >> 8) & 0xff;
lba += c;
count -= c;
lastcount = c;
ranges++;
/*
* Its the caller's responsibility to ensure the
* request will fit so we don't need to check for
* overrun here
*/
}
lastlba = lba;
TAILQ_INSERT_TAIL(&req->bps, bp, bio_queue);
bp = bioq_first(&softc->trim_queue);
if (bp == NULL ||
bp->bio_bcount / softc->params.secsize >
(softc->trim_max_ranges - ranges) * ATA_DSM_RANGE_MAX)
break;
} while (1);
cam_fill_ataio(ataio,
ada_retry_count,
adadone,
CAM_DIR_OUT,
0,
req->data,
((ranges + ATA_DSM_BLK_RANGES - 1) /
ATA_DSM_BLK_RANGES) * ATA_DSM_BLK_SIZE,
ada_default_timeout * 1000);
ata_48bit_cmd(ataio, ATA_DATA_SET_MANAGEMENT,
ATA_DSM_TRIM, 0, (ranges + ATA_DSM_BLK_RANGES -
1) / ATA_DSM_BLK_RANGES);
}
static void
ada_cfaerase(struct ada_softc *softc, struct bio *bp, struct ccb_ataio *ataio)
{
struct trim_request *req = &softc->trim_req;
uint64_t lba = bp->bio_pblkno;
uint16_t count = bp->bio_bcount / softc->params.secsize;
bzero(req, sizeof(*req));
TAILQ_INIT(&req->bps);
bioq_remove(&softc->trim_queue, bp);
TAILQ_INSERT_TAIL(&req->bps, bp, bio_queue);
cam_fill_ataio(ataio,
ada_retry_count,
adadone,
CAM_DIR_NONE,
0,
NULL,
0,
ada_default_timeout*1000);
if (count >= 256)
count = 0;
ata_28bit_cmd(ataio, ATA_CFA_ERASE, 0, lba, count);
}
static void
adastart(struct cam_periph *periph, union ccb *start_ccb)
{
struct ada_softc *softc = (struct ada_softc *)periph->softc;
struct ccb_ataio *ataio = &start_ccb->ataio;
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("adastart\n"));
switch (softc->state) {
case ADA_STATE_NORMAL:
{
struct bio *bp;
u_int8_t tag_code;
/* Run TRIM if not running yet. */
if (!softc->trim_running &&
(bp = bioq_first(&softc->trim_queue)) != 0) {
if (softc->flags & ADA_FLAG_CAN_TRIM) {
ada_dsmtrim(softc, bp, ataio);
} else if ((softc->flags & ADA_FLAG_CAN_CFA) &&
!(softc->flags & ADA_FLAG_CAN_48BIT)) {
ada_cfaerase(softc, bp, ataio);
} else {
/* This can happen if DMA was disabled. */
bioq_remove(&softc->trim_queue, bp);
biofinish(bp, NULL, EOPNOTSUPP);
xpt_release_ccb(start_ccb);
adaschedule(periph);
return;
}
softc->trim_running = 1;
start_ccb->ccb_h.ccb_state = ADA_CCB_TRIM;
start_ccb->ccb_h.flags |= CAM_UNLOCKED;
goto out;
}
/* Run regular command. */
bp = bioq_first(&softc->bio_queue);
if (bp == NULL) {
xpt_release_ccb(start_ccb);
break;
}
bioq_remove(&softc->bio_queue, bp);
if ((bp->bio_flags & BIO_ORDERED) != 0
|| (softc->flags & ADA_FLAG_NEED_OTAG) != 0) {
softc->flags &= ~ADA_FLAG_NEED_OTAG;
softc->flags |= ADA_FLAG_WAS_OTAG;
tag_code = 0;
} else {
tag_code = 1;
}
switch (bp->bio_cmd) {
case BIO_WRITE:
case BIO_READ:
{
uint64_t lba = bp->bio_pblkno;
uint16_t count = bp->bio_bcount / softc->params.secsize;
void *data_ptr;
int rw_op;
if (bp->bio_cmd == BIO_WRITE) {
softc->flags |= ADA_FLAG_DIRTY;
rw_op = CAM_DIR_OUT;
} else {
rw_op = CAM_DIR_IN;
}
data_ptr = bp->bio_data;
if ((bp->bio_flags & (BIO_UNMAPPED|BIO_VLIST)) != 0) {
rw_op |= CAM_DATA_BIO;
data_ptr = bp;
}
#ifdef ADA_TEST_FAILURE
int fail = 0;
/*
* Support the failure ioctls. If the command is a
* read, and there are pending forced read errors, or
* if a write and pending write errors, then fail this
* operation with EIO. This is useful for testing
* purposes. Also, support having every Nth read fail.
*
* This is a rather blunt tool.
*/
if (bp->bio_cmd == BIO_READ) {
if (softc->force_read_error) {
softc->force_read_error--;
fail = 1;
}
if (softc->periodic_read_error > 0) {
if (++softc->periodic_read_count >=
softc->periodic_read_error) {
softc->periodic_read_count = 0;
fail = 1;
}
}
} else {
if (softc->force_write_error) {
softc->force_write_error--;
fail = 1;
}
}
if (fail) {
biofinish(bp, NULL, EIO);
xpt_release_ccb(start_ccb);
adaschedule(periph);
return;
}
#endif
KASSERT((bp->bio_flags & BIO_UNMAPPED) == 0 ||
round_page(bp->bio_bcount + bp->bio_ma_offset) /
PAGE_SIZE == bp->bio_ma_n,
("Short bio %p", bp));
cam_fill_ataio(ataio,
ada_retry_count,
adadone,
rw_op,
tag_code,
data_ptr,
bp->bio_bcount,
ada_default_timeout*1000);
if ((softc->flags & ADA_FLAG_CAN_NCQ) && tag_code) {
if (bp->bio_cmd == BIO_READ) {
ata_ncq_cmd(ataio, ATA_READ_FPDMA_QUEUED,
lba, count);
} else {
ata_ncq_cmd(ataio, ATA_WRITE_FPDMA_QUEUED,
lba, count);
}
} else if ((softc->flags & ADA_FLAG_CAN_48BIT) &&
(lba + count >= ATA_MAX_28BIT_LBA ||
count > 256)) {
if (softc->flags & ADA_FLAG_CAN_DMA48) {
if (bp->bio_cmd == BIO_READ) {
ata_48bit_cmd(ataio, ATA_READ_DMA48,
0, lba, count);
} else {
ata_48bit_cmd(ataio, ATA_WRITE_DMA48,
0, lba, count);
}
} else {
if (bp->bio_cmd == BIO_READ) {
ata_48bit_cmd(ataio, ATA_READ_MUL48,
0, lba, count);
} else {
ata_48bit_cmd(ataio, ATA_WRITE_MUL48,
0, lba, count);
}
}
} else {
if (count == 256)
count = 0;
if (softc->flags & ADA_FLAG_CAN_DMA) {
if (bp->bio_cmd == BIO_READ) {
ata_28bit_cmd(ataio, ATA_READ_DMA,
0, lba, count);
} else {
ata_28bit_cmd(ataio, ATA_WRITE_DMA,
0, lba, count);
}
} else {
if (bp->bio_cmd == BIO_READ) {
ata_28bit_cmd(ataio, ATA_READ_MUL,
0, lba, count);
} else {
ata_28bit_cmd(ataio, ATA_WRITE_MUL,
0, lba, count);
}
}
}
break;
}
case BIO_FLUSH:
cam_fill_ataio(ataio,
1,
adadone,
CAM_DIR_NONE,
0,
NULL,
0,
ada_default_timeout*1000);
if (softc->flags & ADA_FLAG_CAN_48BIT)
ata_48bit_cmd(ataio, ATA_FLUSHCACHE48, 0, 0, 0);
else
ata_28bit_cmd(ataio, ATA_FLUSHCACHE, 0, 0, 0);
break;
}
start_ccb->ccb_h.ccb_state = ADA_CCB_BUFFER_IO;
start_ccb->ccb_h.flags |= CAM_UNLOCKED;
out:
start_ccb->ccb_h.ccb_bp = bp;
softc->outstanding_cmds++;
softc->refcount++;
cam_periph_unlock(periph);
xpt_action(start_ccb);
cam_periph_lock(periph);
softc->refcount--;
/* May have more work to do, so ensure we stay scheduled */
adaschedule(periph);
break;
}
case ADA_STATE_RAHEAD:
case ADA_STATE_WCACHE:
{
cam_fill_ataio(ataio,
1,
adadone,
CAM_DIR_NONE,
0,
NULL,
0,
ada_default_timeout*1000);
if (softc->state == ADA_STATE_RAHEAD) {
ata_28bit_cmd(ataio, ATA_SETFEATURES, ADA_RA ?
ATA_SF_ENAB_RCACHE : ATA_SF_DIS_RCACHE, 0, 0);
start_ccb->ccb_h.ccb_state = ADA_CCB_RAHEAD;
} else {
ata_28bit_cmd(ataio, ATA_SETFEATURES, ADA_WC ?
ATA_SF_ENAB_WCACHE : ATA_SF_DIS_WCACHE, 0, 0);
start_ccb->ccb_h.ccb_state = ADA_CCB_WCACHE;
}
start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
xpt_action(start_ccb);
break;
}
}
}
static void
adadone(struct cam_periph *periph, union ccb *done_ccb)
{
struct ada_softc *softc;
struct ccb_ataio *ataio;
struct ccb_getdev *cgd;
struct cam_path *path;
int state;
softc = (struct ada_softc *)periph->softc;
ataio = &done_ccb->ataio;
path = done_ccb->ccb_h.path;
CAM_DEBUG(path, CAM_DEBUG_TRACE, ("adadone\n"));
state = ataio->ccb_h.ccb_state & ADA_CCB_TYPE_MASK;
switch (state) {
case ADA_CCB_BUFFER_IO:
case ADA_CCB_TRIM:
{
struct bio *bp;
int error;
cam_periph_lock(periph);
if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
error = adaerror(done_ccb, 0, 0);
if (error == ERESTART) {
/* A retry was scheduled, so just return. */
cam_periph_unlock(periph);
return;
}
if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(path,
/*relsim_flags*/0,
/*reduction*/0,
/*timeout*/0,
/*getcount_only*/0);
} else {
if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
panic("REQ_CMP with QFRZN");
error = 0;
}
bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
bp->bio_error = error;
if (error != 0) {
bp->bio_resid = bp->bio_bcount;
bp->bio_flags |= BIO_ERROR;
} else {
if (state == ADA_CCB_TRIM)
bp->bio_resid = 0;
else
bp->bio_resid = ataio->resid;
if (bp->bio_resid > 0)
bp->bio_flags |= BIO_ERROR;
}
softc->outstanding_cmds--;
if (softc->outstanding_cmds == 0)
softc->flags |= ADA_FLAG_WAS_OTAG;
xpt_release_ccb(done_ccb);
if (state == ADA_CCB_TRIM) {
TAILQ_HEAD(, bio) queue;
struct bio *bp1;
TAILQ_INIT(&queue);
TAILQ_CONCAT(&queue, &softc->trim_req.bps, bio_queue);
/*
* Normally, the xpt_release_ccb() above would make sure
* that when we have more work to do, that work would
* get kicked off. However, we specifically keep
* trim_running set to 0 before the call above to allow
* other I/O to progress when many BIO_DELETE requests
* are pushed down. We set trim_running to 0 and call
* daschedule again so that we don't stall if there are
* no other I/Os pending apart from BIO_DELETEs.
*/
softc->trim_running = 0;
adaschedule(periph);
cam_periph_unlock(periph);
while ((bp1 = TAILQ_FIRST(&queue)) != NULL) {
TAILQ_REMOVE(&queue, bp1, bio_queue);
bp1->bio_error = error;
if (error != 0) {
bp1->bio_flags |= BIO_ERROR;
bp1->bio_resid = bp1->bio_bcount;
} else
bp1->bio_resid = 0;
biodone(bp1);
}
} else {
cam_periph_unlock(periph);
biodone(bp);
}
return;
}
case ADA_CCB_RAHEAD:
{
if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
if (adaerror(done_ccb, 0, 0) == ERESTART) {
out:
/* Drop freeze taken due to CAM_DEV_QFREEZE */
cam_release_devq(path, 0, 0, 0, FALSE);
return;
} else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
cam_release_devq(path,
/*relsim_flags*/0,
/*reduction*/0,
/*timeout*/0,
/*getcount_only*/0);
}
}
/*
* Since our peripheral may be invalidated by an error
* above or an external event, we must release our CCB
* before releasing the reference on the peripheral.
* The peripheral will only go away once the last reference
* is removed, and we need it around for the CCB release
* operation.
*/
cgd = (struct ccb_getdev *)done_ccb;
xpt_setup_ccb(&cgd->ccb_h, path, CAM_PRIORITY_NORMAL);
cgd->ccb_h.func_code = XPT_GDEV_TYPE;
xpt_action((union ccb *)cgd);
if (ADA_WC >= 0 &&
cgd->ident_data.support.command1 & ATA_SUPPORT_WRITECACHE) {
softc->state = ADA_STATE_WCACHE;
xpt_release_ccb(done_ccb);
xpt_schedule(periph, CAM_PRIORITY_DEV);
goto out;
}
softc->state = ADA_STATE_NORMAL;
xpt_release_ccb(done_ccb);
/* Drop freeze taken due to CAM_DEV_QFREEZE */
cam_release_devq(path, 0, 0, 0, FALSE);
adaschedule(periph);
cam_periph_release_locked(periph);
return;
}
case ADA_CCB_WCACHE:
{
if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
if (adaerror(done_ccb, 0, 0) == ERESTART) {
goto out;
} else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
cam_release_devq(path,
/*relsim_flags*/0,
/*reduction*/0,
/*timeout*/0,
/*getcount_only*/0);
}
}
softc->state = ADA_STATE_NORMAL;
/*
* Since our peripheral may be invalidated by an error
* above or an external event, we must release our CCB
* before releasing the reference on the peripheral.
* The peripheral will only go away once the last reference
* is removed, and we need it around for the CCB release
* operation.
*/
xpt_release_ccb(done_ccb);
/* Drop freeze taken due to CAM_DEV_QFREEZE */
cam_release_devq(path, 0, 0, 0, FALSE);
adaschedule(periph);
cam_periph_release_locked(periph);
return;
}
case ADA_CCB_DUMP:
/* No-op. We're polling */
return;
default:
break;
}
xpt_release_ccb(done_ccb);
}
static int
adaerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
{
return(cam_periph_error(ccb, cam_flags, sense_flags, NULL));
}
static void
adagetparams(struct cam_periph *periph, struct ccb_getdev *cgd)
{
struct ada_softc *softc = (struct ada_softc *)periph->softc;
struct disk_params *dp = &softc->params;
u_int64_t lbasize48;
u_int32_t lbasize;
dp->secsize = ata_logical_sector_size(&cgd->ident_data);
if ((cgd->ident_data.atavalid & ATA_FLAG_54_58) &&
cgd->ident_data.current_heads && cgd->ident_data.current_sectors) {
dp->heads = cgd->ident_data.current_heads;
dp->secs_per_track = cgd->ident_data.current_sectors;
dp->cylinders = cgd->ident_data.cylinders;
dp->sectors = (u_int32_t)cgd->ident_data.current_size_1 |
((u_int32_t)cgd->ident_data.current_size_2 << 16);
} else {
dp->heads = cgd->ident_data.heads;
dp->secs_per_track = cgd->ident_data.sectors;
dp->cylinders = cgd->ident_data.cylinders;
dp->sectors = cgd->ident_data.cylinders * dp->heads * dp->secs_per_track;
}
lbasize = (u_int32_t)cgd->ident_data.lba_size_1 |
((u_int32_t)cgd->ident_data.lba_size_2 << 16);
/* use the 28bit LBA size if valid or bigger than the CHS mapping */
if (cgd->ident_data.cylinders == 16383 || dp->sectors < lbasize)
dp->sectors = lbasize;
/* use the 48bit LBA size if valid */
lbasize48 = ((u_int64_t)cgd->ident_data.lba_size48_1) |
((u_int64_t)cgd->ident_data.lba_size48_2 << 16) |
((u_int64_t)cgd->ident_data.lba_size48_3 << 32) |
((u_int64_t)cgd->ident_data.lba_size48_4 << 48);
if ((cgd->ident_data.support.command2 & ATA_SUPPORT_ADDRESS48) &&
lbasize48 > ATA_MAX_28BIT_LBA)
dp->sectors = lbasize48;
}
static void
adasendorderedtag(void *arg)
{
struct ada_softc *softc = arg;
if (ada_send_ordered) {
if (softc->outstanding_cmds > 0) {
if ((softc->flags & ADA_FLAG_WAS_OTAG) == 0)
softc->flags |= ADA_FLAG_NEED_OTAG;
softc->flags &= ~ADA_FLAG_WAS_OTAG;
}
}
/* Queue us up again */
callout_reset(&softc->sendordered_c,
(ada_default_timeout * hz) / ADA_ORDEREDTAG_INTERVAL,
adasendorderedtag, softc);
}
/*
* Step through all ADA peripheral drivers, and if the device is still open,
* sync the disk cache to physical media.
*/
static void
adaflush(void)
{
struct cam_periph *periph;
struct ada_softc *softc;
union ccb *ccb;
int error;
CAM_PERIPH_FOREACH(periph, &adadriver) {
softc = (struct ada_softc *)periph->softc;
if (SCHEDULER_STOPPED()) {
/* If we paniced with the lock held, do not recurse. */
if (!cam_periph_owned(periph) &&
(softc->flags & ADA_FLAG_OPEN)) {
adadump(softc->disk, NULL, 0, 0, 0);
}
continue;
}
cam_periph_lock(periph);
/*
* We only sync the cache if the drive is still open, and
* if the drive is capable of it..
*/
if (((softc->flags & ADA_FLAG_OPEN) == 0) ||
(softc->flags & ADA_FLAG_CAN_FLUSHCACHE) == 0) {
cam_periph_unlock(periph);
continue;
}
ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
cam_fill_ataio(&ccb->ataio,
0,
adadone,
CAM_DIR_NONE,
0,
NULL,
0,
ada_default_timeout*1000);
if (softc->flags & ADA_FLAG_CAN_48BIT)
ata_48bit_cmd(&ccb->ataio, ATA_FLUSHCACHE48, 0, 0, 0);
else
ata_28bit_cmd(&ccb->ataio, ATA_FLUSHCACHE, 0, 0, 0);
error = cam_periph_runccb(ccb, adaerror, /*cam_flags*/0,
/*sense_flags*/ SF_NO_RECOVERY | SF_NO_RETRY,
softc->disk->d_devstat);
if (error != 0)
xpt_print(periph->path, "Synchronize cache failed\n");
xpt_release_ccb(ccb);
cam_periph_unlock(periph);
}
}
static void
adaspindown(uint8_t cmd, int flags)
{
struct cam_periph *periph;
struct ada_softc *softc;
union ccb *ccb;
int error;
CAM_PERIPH_FOREACH(periph, &adadriver) {
/* If we paniced with lock held - not recurse here. */
if (cam_periph_owned(periph))
continue;
cam_periph_lock(periph);
softc = (struct ada_softc *)periph->softc;
/*
* We only spin-down the drive if it is capable of it..
*/
if ((softc->flags & ADA_FLAG_CAN_POWERMGT) == 0) {
cam_periph_unlock(periph);
continue;
}
if (bootverbose)
xpt_print(periph->path, "spin-down\n");
ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
cam_fill_ataio(&ccb->ataio,
0,
adadone,
CAM_DIR_NONE | flags,
0,
NULL,
0,
ada_default_timeout*1000);
ata_28bit_cmd(&ccb->ataio, cmd, 0, 0, 0);
error = cam_periph_runccb(ccb, adaerror, /*cam_flags*/0,
/*sense_flags*/ SF_NO_RECOVERY | SF_NO_RETRY,
softc->disk->d_devstat);
if (error != 0)
xpt_print(periph->path, "Spin-down disk failed\n");
xpt_release_ccb(ccb);
cam_periph_unlock(periph);
}
}
static void
adashutdown(void *arg, int howto)
{
adaflush();
if (ada_spindown_shutdown != 0 &&
(howto & (RB_HALT | RB_POWEROFF)) != 0)
adaspindown(ATA_STANDBY_IMMEDIATE, 0);
}
static void
adasuspend(void *arg)
{
adaflush();
if (ada_spindown_suspend != 0)
adaspindown(ATA_SLEEP, CAM_DEV_QFREEZE);
}
static void
adaresume(void *arg)
{
struct cam_periph *periph;
struct ada_softc *softc;
if (ada_spindown_suspend == 0)
return;
CAM_PERIPH_FOREACH(periph, &adadriver) {
cam_periph_lock(periph);
softc = (struct ada_softc *)periph->softc;
/*
* We only spin-down the drive if it is capable of it..
*/
if ((softc->flags & ADA_FLAG_CAN_POWERMGT) == 0) {
cam_periph_unlock(periph);
continue;
}
if (bootverbose)
xpt_print(periph->path, "resume\n");
/*
* Drop freeze taken due to CAM_DEV_QFREEZE flag set on
* sleep request.
*/
cam_release_devq(periph->path,
/*relsim_flags*/0,
/*openings*/0,
/*timeout*/0,
/*getcount_only*/0);
cam_periph_unlock(periph);
}
}
#endif /* _KERNEL */
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