FreeBSD-5.3/sys/dev/amr/amrvar.h
/*-
* Copyright (c) 1999,2000 Michael Smith
* Copyright (c) 2000 BSDi
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Copyright (c) 2002 Eric Moore
* Copyright (c) 2002 LSI Logic Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The party using or redistributing the source code and binary forms
* agrees to the disclaimer below and the terms and conditions set forth
* herein.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*
* $FreeBSD: src/sys/dev/amr/amrvar.h,v 1.22 2004/07/01 06:56:10 ps Exp $
*/
#if __FreeBSD_version >= 500005
# include <sys/taskqueue.h>
# include <geom/geom_disk.h>
#endif
#ifdef AMR_DEBUG
# define debug(level, fmt, args...) do {if (level <= AMR_DEBUG) printf("%s: " fmt "\n", __func__ , ##args);} while(0)
# define debug_called(level) do {if (level <= AMR_DEBUG) printf("%s: called\n", __func__);} while(0)
#else
# define debug(level, fmt, args...)
# define debug_called(level)
#endif
#define xdebug(fmt, args...) printf("%s: " fmt "\n", __func__ , ##args)
/*
* Per-logical-drive datastructure
*/
struct amr_logdrive
{
u_int32_t al_size;
int al_state;
int al_properties;
/* synthetic geometry */
int al_cylinders;
int al_heads;
int al_sectors;
/* driver */
device_t al_disk;
};
/*
* Due to the difficulty of using the zone allocator to create a new
* zone from within a module, we use our own clustering to reduce
* memory wastage due to allocating lots of these small structures.
*
* 16k gives us a little under 200 command structures, which should
* normally be plenty. We will grab more if we need them.
*/
#define AMR_CMD_CLUSTERSIZE (16 * 1024)
/*
* Per-command control structure.
*/
struct amr_command
{
TAILQ_ENTRY(amr_command) ac_link;
struct amr_softc *ac_sc;
u_int8_t ac_slot;
int ac_status; /* command completion status */
struct amr_mailbox ac_mailbox;
int ac_flags;
#define AMR_CMD_DATAIN (1<<0)
#define AMR_CMD_DATAOUT (1<<1)
#define AMR_CMD_CCB_DATAIN (1<<2)
#define AMR_CMD_CCB_DATAOUT (1<<3)
#define AMR_CMD_PRIORITY (1<<4)
#define AMR_CMD_MAPPED (1<<5)
#define AMR_CMD_SLEEP (1<<6)
#define AMR_CMD_BUSY (1<<7)
struct bio *ac_bio;
void *ac_data;
size_t ac_length;
bus_dmamap_t ac_dmamap;
u_int32_t ac_dataphys;
void *ac_ccb_data;
size_t ac_ccb_length;
bus_dmamap_t ac_ccb_dmamap;
u_int32_t ac_ccb_dataphys;
void (* ac_complete)(struct amr_command *ac);
void *ac_private;
};
struct amr_command_cluster
{
TAILQ_ENTRY(amr_command_cluster) acc_link;
struct amr_command acc_command[0];
};
#define AMR_CMD_CLUSTERCOUNT ((AMR_CMD_CLUSTERSIZE - sizeof(struct amr_command_cluster)) / \
sizeof(struct amr_command))
/*
* Per-controller-instance data
*/
struct amr_softc
{
/* bus attachments */
device_t amr_dev;
struct resource *amr_reg; /* control registers */
bus_space_handle_t amr_bhandle;
bus_space_tag_t amr_btag;
bus_dma_tag_t amr_parent_dmat; /* parent DMA tag */
bus_dma_tag_t amr_buffer_dmat; /* data buffer DMA tag */
struct resource *amr_irq; /* interrupt */
void *amr_intr;
/* mailbox */
volatile struct amr_mailbox *amr_mailbox;
volatile struct amr_mailbox64 *amr_mailbox64;
u_int32_t amr_mailboxphys;
bus_dma_tag_t amr_mailbox_dmat;
bus_dmamap_t amr_mailbox_dmamap;
/* scatter/gather lists and their controller-visible mappings */
struct amr_sgentry *amr_sgtable; /* s/g lists */
u_int32_t amr_sgbusaddr; /* s/g table base address in bus space */
bus_dma_tag_t amr_sg_dmat; /* s/g buffer DMA tag */
bus_dmamap_t amr_sg_dmamap; /* map for s/g buffers */
/* controller limits and features */
int amr_maxio; /* maximum number of I/O transactions */
int amr_maxdrives; /* max number of logical drives */
int amr_maxchan; /* count of SCSI channels */
/* connected logical drives */
struct amr_logdrive amr_drive[AMR_MAXLD];
/* controller state */
int amr_state;
#define AMR_STATE_OPEN (1<<0)
#define AMR_STATE_SUSPEND (1<<1)
#define AMR_STATE_INTEN (1<<2)
#define AMR_STATE_SHUTDOWN (1<<3)
#define AMR_STATE_CRASHDUMP (1<<4)
/* per-controller queues */
struct bio_queue_head amr_bioq; /* pending I/O with no commands */
TAILQ_HEAD(,amr_command) amr_ready; /* commands ready to be submitted */
struct amr_command *amr_busycmd[AMR_MAXCMD];
int amr_busyslots;
TAILQ_HEAD(,amr_command) amr_completed;
TAILQ_HEAD(,amr_command) amr_freecmds;
TAILQ_HEAD(,amr_command_cluster) amr_cmd_clusters;
/* CAM attachments for passthrough */
struct cam_sim *amr_cam_sim[AMR_MAX_CHANNELS];
TAILQ_HEAD(, ccb_hdr) amr_cam_ccbq;
/* control device */
struct cdev *amr_dev_t;
/* controller type-specific support */
int amr_type;
#define AMR_TYPE_QUARTZ (1<<0)
#define AMR_IS_QUARTZ(sc) ((sc)->amr_type & AMR_TYPE_QUARTZ)
#define AMR_TYPE_40LD (1<<1)
#define AMR_IS_40LD(sc) ((sc)->amr_type & AMR_TYPE_40LD)
int (* amr_submit_command)(struct amr_softc *sc);
int (* amr_get_work)(struct amr_softc *sc, struct amr_mailbox *mbsave);
int (*amr_poll_command)(struct amr_command *ac);
int support_ext_cdb; /* greater than 10 byte cdb support */
/* misc glue */
struct intr_config_hook amr_ich; /* wait-for-interrupts probe hook */
struct callout_handle amr_timeout; /* periodic status check */
#if __FreeBSD_version >= 500005
struct task amr_task_complete; /* deferred-completion task */
#endif
};
/*
* Interface between bus connections and driver core.
*/
extern int amr_attach(struct amr_softc *sc);
extern void amr_free(struct amr_softc *sc);
extern int amr_flush(struct amr_softc *sc);
extern int amr_done(struct amr_softc *sc);
extern void amr_startio(struct amr_softc *sc);
/*
* Command buffer allocation.
*/
extern struct amr_command *amr_alloccmd(struct amr_softc *sc);
extern void amr_releasecmd(struct amr_command *ac);
/*
* CAM interface
*/
extern int amr_cam_attach(struct amr_softc *sc);
extern void amr_cam_detach(struct amr_softc *sc);
extern int amr_cam_command(struct amr_softc *sc, struct amr_command **acp);
/*
* MegaRAID logical disk driver
*/
struct amrd_softc
{
device_t amrd_dev;
struct amr_softc *amrd_controller;
struct amr_logdrive *amrd_drive;
struct disk *amrd_disk;
int amrd_unit;
};
/*
* Interface between driver core and disk driver (should be using a bus?)
*/
extern int amr_submit_bio(struct amr_softc *sc, struct bio *bio);
extern int amr_dump_blocks(struct amr_softc *sc, int unit, u_int32_t lba, void *data, int blks);
extern void amrd_intr(void *data);
/********************************************************************************
* Enqueue/dequeue functions
*/
static __inline void
amr_enqueue_bio(struct amr_softc *sc, struct bio *bio)
{
int s;
s = splbio();
bioq_insert_tail(&sc->amr_bioq, bio);
splx(s);
}
static __inline struct bio *
amr_dequeue_bio(struct amr_softc *sc)
{
struct bio *bio;
int s;
s = splbio();
if ((bio = bioq_first(&sc->amr_bioq)) != NULL)
bioq_remove(&sc->amr_bioq, bio);
splx(s);
return(bio);
}
static __inline void
amr_enqueue_ready(struct amr_command *ac)
{
int s;
s = splbio();
TAILQ_INSERT_TAIL(&ac->ac_sc->amr_ready, ac, ac_link);
splx(s);
}
static __inline void
amr_requeue_ready(struct amr_command *ac)
{
int s;
s = splbio();
TAILQ_INSERT_HEAD(&ac->ac_sc->amr_ready, ac, ac_link);
splx(s);
}
static __inline struct amr_command *
amr_dequeue_ready(struct amr_softc *sc)
{
struct amr_command *ac;
int s;
s = splbio();
if ((ac = TAILQ_FIRST(&sc->amr_ready)) != NULL)
TAILQ_REMOVE(&sc->amr_ready, ac, ac_link);
splx(s);
return(ac);
}
static __inline void
amr_enqueue_completed(struct amr_command *ac)
{
int s;
s = splbio();
TAILQ_INSERT_TAIL(&ac->ac_sc->amr_completed, ac, ac_link);
splx(s);
}
static __inline struct amr_command *
amr_dequeue_completed(struct amr_softc *sc)
{
struct amr_command *ac;
int s;
s = splbio();
if ((ac = TAILQ_FIRST(&sc->amr_completed)) != NULL)
TAILQ_REMOVE(&sc->amr_completed, ac, ac_link);
splx(s);
return(ac);
}
static __inline void
amr_enqueue_free(struct amr_command *ac)
{
int s;
s = splbio();
TAILQ_INSERT_TAIL(&ac->ac_sc->amr_freecmds, ac, ac_link);
splx(s);
}
static __inline struct amr_command *
amr_dequeue_free(struct amr_softc *sc)
{
struct amr_command *ac;
int s;
s = splbio();
if ((ac = TAILQ_FIRST(&sc->amr_freecmds)) != NULL)
TAILQ_REMOVE(&sc->amr_freecmds, ac, ac_link);
splx(s);
return(ac);
}