mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-26 11:47:31 +00:00
231 lines
8.6 KiB
C
231 lines
8.6 KiB
C
/*-
|
|
* Copyright (c) 1999 Michael Smith
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* Debugging levels:
|
|
* 0 - quiet, only emit warnings
|
|
* 1 - noisy, emit major function points and things done
|
|
* 2 - extremely noisy, emit trace items in loops, etc.
|
|
*/
|
|
#ifdef MLX_DEBUG
|
|
#define debug(level, fmt, args...) do { if (level <= MLX_DEBUG) printf("%s: " fmt "\n", __func__ , ##args); } while(0)
|
|
#define debug_called(level) do { if (level <= MLX_DEBUG) printf(__func__ ": called\n"); } while(0)
|
|
#else
|
|
#define debug(level, fmt, args...)
|
|
#define debug_called(level)
|
|
#endif
|
|
|
|
/*
|
|
* Regardless of the actual capacity of the controller, we will allocate space
|
|
* for 64 s/g entries. Typically controllers support 17 or 33 entries (64k or
|
|
* 128k maximum transfer assuming 4k page size and non-optimal alignment), but
|
|
* making that fit cleanly without crossing page boundaries requires rounding up
|
|
* to the next power of two.
|
|
*/
|
|
#define MLX_MAXPHYS (128 * 1024)
|
|
#define MLX_NSEG 64
|
|
|
|
#define MLX_NSLOTS 256 /* max number of command slots */
|
|
|
|
#define MLX_MAXDRIVES 32 /* max number of system drives */
|
|
|
|
/*
|
|
* Structure describing a System Drive as attached to the controller.
|
|
*/
|
|
struct mlx_sysdrive
|
|
{
|
|
/* from MLX_CMD_ENQSYSDRIVE */
|
|
u_int32_t ms_size;
|
|
int ms_state;
|
|
int ms_raidlevel;
|
|
|
|
/* synthetic geometry */
|
|
int ms_cylinders;
|
|
int ms_heads;
|
|
int ms_sectors;
|
|
|
|
/* handle for attached driver */
|
|
device_t ms_disk;
|
|
};
|
|
|
|
/*
|
|
* Per-command control structure.
|
|
*/
|
|
struct mlx_command
|
|
{
|
|
TAILQ_ENTRY(mlx_command) mc_link; /* list linkage */
|
|
|
|
struct mlx_softc *mc_sc; /* controller that owns us */
|
|
u_int8_t mc_slot; /* command slot we occupy */
|
|
u_int16_t mc_status; /* command completion status */
|
|
time_t mc_timeout; /* when this command expires */
|
|
u_int8_t mc_mailbox[16]; /* command mailbox */
|
|
u_int32_t mc_sgphys; /* physical address of s/g array in controller space */
|
|
int mc_nsgent; /* number of entries in s/g map */
|
|
int mc_flags;
|
|
#define MLX_CMD_DATAIN (1<<0)
|
|
#define MLX_CMD_DATAOUT (1<<1)
|
|
#define MLX_CMD_PRIORITY (1<<2) /* high-priority command */
|
|
|
|
void *mc_data; /* data buffer */
|
|
size_t mc_length;
|
|
bus_dmamap_t mc_dmamap; /* DMA map for data */
|
|
u_int32_t mc_dataphys; /* data buffer base address controller space */
|
|
|
|
void (* mc_complete)(struct mlx_command *mc); /* completion handler */
|
|
void *mc_private; /* submitter-private data or wait channel */
|
|
int mc_command;
|
|
};
|
|
|
|
/*
|
|
* Per-controller structure.
|
|
*/
|
|
struct mlx_softc
|
|
{
|
|
/* bus connections */
|
|
device_t mlx_dev;
|
|
struct cdev *mlx_dev_t;
|
|
struct resource *mlx_mem; /* mailbox interface window */
|
|
int mlx_mem_rid;
|
|
int mlx_mem_type;
|
|
bus_dma_tag_t mlx_parent_dmat;/* parent DMA tag */
|
|
bus_dma_tag_t mlx_buffer_dmat;/* data buffer DMA tag */
|
|
struct resource *mlx_irq; /* interrupt */
|
|
void *mlx_intr; /* interrupt handle */
|
|
|
|
/* scatter/gather lists and their controller-visible mappings */
|
|
struct mlx_sgentry *mlx_sgtable; /* s/g lists */
|
|
u_int32_t mlx_sgbusaddr; /* s/g table base address in bus space */
|
|
bus_dma_tag_t mlx_sg_dmat; /* s/g buffer DMA tag */
|
|
bus_dmamap_t mlx_sg_dmamap; /* map for s/g buffers */
|
|
|
|
/* controller limits and features */
|
|
struct mlx_enquiry2 *mlx_enq2;
|
|
int mlx_feature; /* controller features/quirks */
|
|
#define MLX_FEAT_PAUSEWORKS (1<<0) /* channel pause works as expected */
|
|
|
|
/* controller queues and arrays */
|
|
TAILQ_HEAD(, mlx_command) mlx_freecmds; /* command structures available for reuse */
|
|
TAILQ_HEAD(, mlx_command) mlx_work; /* active commands */
|
|
struct mlx_command *mlx_busycmd[MLX_NSLOTS]; /* busy commands */
|
|
int mlx_busycmds; /* count of busy commands */
|
|
struct mlx_sysdrive mlx_sysdrive[MLX_MAXDRIVES]; /* system drives */
|
|
struct bio_queue_head mlx_bioq; /* outstanding I/O operations */
|
|
int mlx_waitbufs; /* number of bufs awaiting commands */
|
|
|
|
/* controller status */
|
|
int mlx_geom;
|
|
#define MLX_GEOM_128_32 0 /* geoemetry translation modes */
|
|
#define MLX_GEOM_256_63 1
|
|
int mlx_state;
|
|
#define MLX_STATE_INTEN (1<<0) /* interrupts have been enabled */
|
|
#define MLX_STATE_SHUTDOWN (1<<1) /* controller is shut down */
|
|
#define MLX_STATE_OPEN (1<<2) /* control device is open */
|
|
#define MLX_STATE_SUSPEND (1<<3) /* controller is suspended */
|
|
#define MLX_STATE_QFROZEN (1<<4) /* bio queue frozen */
|
|
struct mtx mlx_io_lock;
|
|
struct sx mlx_config_lock;
|
|
struct callout mlx_timeout; /* periodic status monitor */
|
|
time_t mlx_lastpoll; /* last time_second we polled for status */
|
|
u_int16_t mlx_lastevent; /* sequence number of the last event we recorded */
|
|
int mlx_currevent; /* sequence number last time we looked */
|
|
int mlx_background; /* if != 0 rebuild or check is in progress */
|
|
#define MLX_BACKGROUND_CHECK 1 /* we started a check */
|
|
#define MLX_BACKGROUND_REBUILD 2 /* we started a rebuild */
|
|
#define MLX_BACKGROUND_SPONTANEOUS 3 /* it just happened somehow */
|
|
struct mlx_rebuild_status mlx_rebuildstat; /* last rebuild status */
|
|
struct mlx_pause mlx_pause; /* pending pause operation details */
|
|
|
|
int mlx_flags;
|
|
#define MLX_SPINUP_REPORTED (1<<0) /* "spinning up drives" message displayed */
|
|
#define MLX_EVENTLOG_BUSY (1<<1) /* currently reading event log */
|
|
|
|
/* interface-specific accessor functions */
|
|
int mlx_iftype; /* interface protocol */
|
|
#define MLX_IFTYPE_2 2
|
|
#define MLX_IFTYPE_3 3
|
|
#define MLX_IFTYPE_4 4
|
|
#define MLX_IFTYPE_5 5
|
|
int (* mlx_tryqueue)(struct mlx_softc *sc, struct mlx_command *mc);
|
|
int (* mlx_findcomplete)(struct mlx_softc *sc, u_int8_t *slot, u_int16_t *status);
|
|
void (* mlx_intaction)(struct mlx_softc *sc, int action);
|
|
int (* mlx_fw_handshake)(struct mlx_softc *sc, int *error, int *param1, int *param2, int first);
|
|
#define MLX_INTACTION_DISABLE 0
|
|
#define MLX_INTACTION_ENABLE 1
|
|
};
|
|
|
|
#define MLX_IO_LOCK(sc) mtx_lock(&(sc)->mlx_io_lock)
|
|
#define MLX_IO_UNLOCK(sc) mtx_unlock(&(sc)->mlx_io_lock)
|
|
#define MLX_IO_ASSERT_LOCKED(sc) mtx_assert(&(sc)->mlx_io_lock, MA_OWNED)
|
|
#define MLX_CONFIG_LOCK(sc) sx_xlock(&(sc)->mlx_config_lock)
|
|
#define MLX_CONFIG_UNLOCK(sc) sx_xunlock(&(sc)->mlx_config_lock)
|
|
#define MLX_CONFIG_ASSERT_LOCKED(sc) sx_assert(&(sc)->mlx_config_lock, SA_XLOCKED)
|
|
|
|
/*
|
|
* Interface between bus connections and driver core.
|
|
*/
|
|
extern void mlx_free(struct mlx_softc *sc);
|
|
extern int mlx_attach(struct mlx_softc *sc);
|
|
extern void mlx_startup(struct mlx_softc *sc);
|
|
extern void mlx_intr(void *data);
|
|
extern int mlx_detach(device_t dev);
|
|
extern int mlx_shutdown(device_t dev);
|
|
extern int mlx_suspend(device_t dev);
|
|
extern int mlx_resume(device_t dev);
|
|
extern d_open_t mlx_open;
|
|
extern d_close_t mlx_close;
|
|
extern d_ioctl_t mlx_ioctl;
|
|
|
|
extern devclass_t mlx_devclass;
|
|
extern devclass_t mlxd_devclass;
|
|
|
|
/*
|
|
* Mylex System Disk driver
|
|
*/
|
|
struct mlxd_softc
|
|
{
|
|
device_t mlxd_dev;
|
|
struct mlx_softc *mlxd_controller;
|
|
struct mlx_sysdrive *mlxd_drive;
|
|
struct disk *mlxd_disk;
|
|
int mlxd_unit;
|
|
int mlxd_flags;
|
|
#define MLXD_OPEN (1<<0) /* drive is open (can't shut down) */
|
|
};
|
|
|
|
/*
|
|
* Interface between driver core and disk driver (should be using a bus?)
|
|
*/
|
|
extern int mlx_submit_buf(struct mlx_softc *sc, struct bio *bp);
|
|
extern int mlx_submit_ioctl(struct mlx_softc *sc,
|
|
struct mlx_sysdrive *drive, u_long cmd,
|
|
caddr_t addr, int32_t flag, struct thread *td);
|
|
extern void mlxd_intr(struct bio *bp);
|
|
|
|
|