fe3cb0e1ec
ever connect a SCSI Cdrom/Tape/Jukebox/Scanner/Printer/kitty-litter-scooper to your high-end RAID controller. The interface to the arrays is still via the block interface; this merely provides a way to circumvent the RAID functionality and access the SCSI buses directly. Note that for somewhat obvious reasons, hard drives are not exposed to the da driver through this interface, though you can still talk to them via the pass driver. Be the first on your block to low-level format unsuspecting drives that are part of an array! To enable this, add the 'aacp' device to your kernel config. MFC after: 3 days
590 lines
17 KiB
C
590 lines
17 KiB
C
/*-
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* Copyright (c) 2000 Michael Smith
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* Copyright (c) 2001 Scott Long
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* Copyright (c) 2000 BSDi
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* Copyright (c) 2001 Adaptec, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Driver Parameter Definitions
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*/
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/*
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* The firmware interface allows for a 16-bit s/g list length. We limit
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* ourselves to a reasonable maximum and ensure alignment.
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*/
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#define AAC_MAXSGENTRIES 64 /* max S/G entries, limit 65535 */
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/*
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* We allocate a small set of FIBs for the adapter to use to send us messages.
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*/
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#define AAC_ADAPTER_FIBS 8
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/*
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* FIBs are allocated up-front, and the pool isn't grown. We should allocate
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* enough here to let us keep the adapter busy without wasting large amounts
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* of kernel memory. The current interface implementation limits us to 512
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* FIBs queued for the adapter at any one time.
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*/
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#define AAC_FIB_COUNT 128
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/*
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* The controller reports status events in AIFs. We hang on to a number of
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* these in order to pass them out to user-space management tools.
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*/
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#define AAC_AIFQ_LENGTH 64
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/*
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* Firmware messages are passed in the printf buffer.
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*/
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#define AAC_PRINTF_BUFSIZE 256
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/*
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* We wait this many seconds for the adapter to come ready if it is still
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* booting
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*/
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#define AAC_BOOT_TIMEOUT (3 * 60)
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/*
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* Timeout for immediate commands.
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*/
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#define AAC_IMMEDIATE_TIMEOUT 30 /* seconds */
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/*
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* Timeout for normal commands
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*/
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#define AAC_CMD_TIMEOUT 30 /* seconds */
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/*
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* Rate at which we periodically check for timed out commands and kick the
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* controller.
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*/
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#define AAC_PERIODIC_INTERVAL 20 /* seconds */
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/*
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* Character device major numbers.
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*/
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#define AAC_DISK_MAJOR 200
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/*
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* Driver Variable Definitions
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*/
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#if __FreeBSD_version >= 500005
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# include <sys/taskqueue.h>
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#endif
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/*
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* Per-container data structure
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*/
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struct aac_container
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{
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struct aac_mntobj co_mntobj;
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device_t co_disk;
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int co_found;
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TAILQ_ENTRY(aac_container) co_link;
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};
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/*
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* Per-disk structure
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*/
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struct aac_disk
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{
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device_t ad_dev;
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dev_t ad_dev_t;
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struct aac_softc *ad_controller;
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struct aac_container *ad_container;
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struct disk ad_disk;
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struct devstat ad_stats;
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struct disklabel ad_label;
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int ad_flags;
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#define AAC_DISK_OPEN (1<<0)
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int ad_cylinders;
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int ad_heads;
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int ad_sectors;
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u_int32_t ad_size;
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int unit;
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};
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/*
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* Per-command control structure.
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*/
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struct aac_command
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{
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TAILQ_ENTRY(aac_command) cm_link; /* list linkage */
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struct aac_softc *cm_sc; /* controller that owns us */
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struct aac_fib *cm_fib; /* FIB associated with this
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* command */
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u_int32_t cm_fibphys; /* bus address of the FIB */
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struct bio *cm_data; /* pointer to data in kernel
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* space */
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u_int32_t cm_datalen; /* data length */
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bus_dmamap_t cm_datamap; /* DMA map for bio data */
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struct aac_sg_table *cm_sgtable; /* pointer to s/g table in
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* command */
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int cm_flags;
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#define AAC_CMD_MAPPED (1<<0) /* command has had its data
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* mapped */
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#define AAC_CMD_DATAIN (1<<1) /* command involves data moving
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* from controller to host */
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#define AAC_CMD_DATAOUT (1<<2) /* command involves data moving
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* from host to controller */
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#define AAC_CMD_COMPLETED (1<<3) /* command has been completed */
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#define AAC_CMD_TIMEDOUT (1<<4) /* command taken too long */
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#define AAC_ON_AACQ_FREE (1<<5)
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#define AAC_ON_AACQ_READY (1<<6)
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#define AAC_ON_AACQ_BUSY (1<<7)
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#define AAC_ON_AACQ_COMPLETE (1<<8)
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#define AAC_ON_AACQ_MASK ((1<<5)|(1<<6)|(1<<7)|(1<<8))
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void (* cm_complete)(struct aac_command *cm);
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void *cm_private;
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time_t cm_timestamp; /* command creation time */
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int cm_queue;
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};
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/*
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* We gather a number of adapter-visible items into a single structure.
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*
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* The ordering of this strucure may be important; we copy the Linux driver:
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*
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* Adapter FIBs
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* Init struct
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* Queue headers (Comm Area)
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* Printf buffer
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*
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* In addition, we add:
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* Sync Fib
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*/
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struct aac_common {
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/* fibs for the controller to send us messages */
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struct aac_fib ac_fibs[AAC_ADAPTER_FIBS];
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/* the init structure */
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struct aac_adapter_init ac_init;
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/* arena within which the queue structures are kept */
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u_int8_t ac_qbuf[sizeof(struct aac_queue_table) +
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AAC_QUEUE_ALIGN];
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/* buffer for text messages from the controller */
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char ac_printf[AAC_PRINTF_BUFSIZE];
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/* fib for synchronous commands */
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struct aac_fib ac_sync_fib;
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};
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/*
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* Interface operations
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*/
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struct aac_interface
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{
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int (*aif_get_fwstatus)(struct aac_softc *sc);
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void (*aif_qnotify)(struct aac_softc *sc, int qbit);
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int (*aif_get_istatus)(struct aac_softc *sc);
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void (*aif_clr_istatus)(struct aac_softc *sc, int mask);
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void (*aif_set_mailbox)(struct aac_softc *sc, u_int32_t command,
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u_int32_t arg0, u_int32_t arg1,
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u_int32_t arg2, u_int32_t arg3);
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int (*aif_get_mailboxstatus)(struct aac_softc *sc);
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void (*aif_set_interrupts)(struct aac_softc *sc, int enable);
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};
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extern struct aac_interface aac_rx_interface;
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extern struct aac_interface aac_sa_interface;
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extern struct aac_interface aac_fa_interface;
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#define AAC_GET_FWSTATUS(sc) ((sc)->aac_if.aif_get_fwstatus((sc)))
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#define AAC_QNOTIFY(sc, qbit) ((sc)->aac_if.aif_qnotify((sc), (qbit)))
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#define AAC_GET_ISTATUS(sc) ((sc)->aac_if.aif_get_istatus((sc)))
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#define AAC_CLEAR_ISTATUS(sc, mask) ((sc)->aac_if.aif_clr_istatus((sc), \
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(mask)))
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#define AAC_SET_MAILBOX(sc, command, arg0, arg1, arg2, arg3) \
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((sc)->aac_if.aif_set_mailbox((sc), (command), (arg0), (arg1), (arg2), \
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(arg3)))
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#define AAC_GET_MAILBOXSTATUS(sc) ((sc)->aac_if.aif_get_mailboxstatus( \
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(sc)))
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#define AAC_MASK_INTERRUPTS(sc) ((sc)->aac_if.aif_set_interrupts((sc), \
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0))
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#define AAC_UNMASK_INTERRUPTS(sc) ((sc)->aac_if.aif_set_interrupts((sc), \
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1))
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#define AAC_SETREG4(sc, reg, val) bus_space_write_4(sc->aac_btag, \
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sc->aac_bhandle, reg, val)
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#define AAC_GETREG4(sc, reg) bus_space_read_4 (sc->aac_btag, \
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sc->aac_bhandle, reg)
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#define AAC_SETREG2(sc, reg, val) bus_space_write_2(sc->aac_btag, \
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sc->aac_bhandle, reg, val)
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#define AAC_GETREG2(sc, reg) bus_space_read_2 (sc->aac_btag, \
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sc->aac_bhandle, reg)
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#define AAC_SETREG1(sc, reg, val) bus_space_write_1(sc->aac_btag, \
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sc->aac_bhandle, reg, val)
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#define AAC_GETREG1(sc, reg) bus_space_read_1 (sc->aac_btag, \
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sc->aac_bhandle, reg)
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TAILQ_HEAD(aac_container_tq, aac_container);
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/* Define the OS version specific locks */
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#if __FreeBSD_version >= 500005
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#include <sys/lock.h>
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#include <sys/mutex.h>
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typedef struct mtx aac_lock_t;
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#define AAC_LOCK_INIT(l, s) mtx_init(l, s, NULL, MTX_DEF)
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#define AAC_LOCK_ACQUIRE(l) mtx_lock(l)
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#define AAC_LOCK_RELEASE(l) mtx_unlock(l)
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#else
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typedef struct simplelock aac_lock_t;
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#define AAC_LOCK_INIT(l, s) simple_lock_init(l)
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#define AAC_LOCK_ACQUIRE(l) simple_lock(l)
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#define AAC_LOCK_RELEASE(l) simple_unlock(l)
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#endif
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#if __FreeBSD_version >= 500005
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#include <sys/selinfo.h>
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#else
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#include <sys/select.h>
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#endif
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/*
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* Per-controller structure.
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*/
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struct aac_softc
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{
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/* bus connections */
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device_t aac_dev;
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struct resource *aac_regs_resource; /* register interface
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* window */
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int aac_regs_rid; /* resource ID */
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bus_space_handle_t aac_bhandle; /* bus space handle */
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bus_space_tag_t aac_btag; /* bus space tag */
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bus_dma_tag_t aac_parent_dmat; /* parent DMA tag */
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bus_dma_tag_t aac_buffer_dmat; /* data buffer/command
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* DMA tag */
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struct resource *aac_irq; /* interrupt */
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int aac_irq_rid;
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void *aac_intr; /* interrupt handle */
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/* controller features, limits and status */
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int aac_state;
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#define AAC_STATE_SUSPEND (1<<0)
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#define AAC_STATE_OPEN (1<<1)
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#define AAC_STATE_INTERRUPTS_ON (1<<2)
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#define AAC_STATE_AIF_SLEEPER (1<<3)
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struct FsaRevision aac_revision;
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/* controller hardware interface */
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int aac_hwif;
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#define AAC_HWIF_I960RX 0
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#define AAC_HWIF_STRONGARM 1
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#define AAC_HWIF_FALCON 2
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#define AAC_HWIF_UNKNOWN -1
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bus_dma_tag_t aac_common_dmat; /* common structure
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* DMA tag */
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bus_dmamap_t aac_common_dmamap; /* common structure
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* DMA map */
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struct aac_common *aac_common;
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u_int32_t aac_common_busaddr;
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struct aac_interface aac_if;
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/* command/fib resources */
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bus_dma_tag_t aac_fib_dmat; /* DMA tag for allocing FIBs */
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struct aac_fib *aac_fibs;
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bus_dmamap_t aac_fibmap;
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u_int32_t aac_fibphys;
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struct aac_command aac_command[AAC_FIB_COUNT];
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/* command management */
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TAILQ_HEAD(,aac_command) aac_free; /* command structures
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* available for reuse */
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TAILQ_HEAD(,aac_command) aac_ready; /* commands on hold for
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* controller resources */
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TAILQ_HEAD(,aac_command) aac_busy;
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TAILQ_HEAD(,aac_command) aac_complete; /* commands which have been
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* returned by the controller */
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struct bio_queue_head aac_bioq;
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struct aac_queue_table *aac_queues;
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struct aac_queue_entry *aac_qentries[AAC_QUEUE_COUNT];
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struct aac_qstat aac_qstat[AACQ_COUNT]; /* queue statistics */
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/* connected containters */
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struct aac_container_tq aac_container_tqh;
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aac_lock_t aac_container_lock;
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/* Protect the sync fib */
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#define AAC_SYNC_LOCK_FORCE (1 << 0)
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aac_lock_t aac_sync_lock;
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/* delayed activity infrastructure */
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#if __FreeBSD_version >= 500005
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struct task aac_task_complete; /* deferred-completion
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* task */
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#endif
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struct intr_config_hook aac_ich;
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/* management interface */
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dev_t aac_dev_t;
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aac_lock_t aac_aifq_lock;
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struct aac_aif_command aac_aifq[AAC_AIFQ_LENGTH];
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int aac_aifq_head;
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int aac_aifq_tail;
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struct selinfo rcv_select;
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struct proc *aifthread;
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int aifflags;
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#define AAC_AIFFLAGS_RUNNING (1 << 0)
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#define AAC_AIFFLAGS_PENDING (1 << 1)
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#define AAC_AIFFLAGS_EXIT (1 << 2)
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#define AAC_AIFFLAGS_EXITED (1 << 3)
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u_int32_t quirks;
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#define AAC_QUIRK_PERC2QC (1 << 0)
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#define AAC_QUIRK_NOCAM (1 << 1) /* No SCSI passthrough */
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#define AAC_QUIRK_CAM_NORESET (1 << 2) /* Fake SCSI resets */
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#define AAC_QUIRK_CAM_PASSONLY (1 << 3) /* Only create pass devices */
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u_int32_t scsi_method_id;
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};
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/*
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* Public functions
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*/
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extern void aac_free(struct aac_softc *sc);
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extern int aac_attach(struct aac_softc *sc);
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extern int aac_detach(device_t dev);
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extern int aac_shutdown(device_t dev);
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extern int aac_suspend(device_t dev);
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extern int aac_resume(device_t dev);
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extern void aac_intr(void *arg);
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extern void aac_submit_bio(struct bio *bp);
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extern void aac_biodone(struct bio *bp);
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extern void aac_startio(struct aac_softc *sc);
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extern int aac_alloc_command(struct aac_softc *sc,
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struct aac_command **cmp);
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extern void aac_release_command(struct aac_command *cm);
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extern int aac_alloc_sync_fib(struct aac_softc *sc,
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struct aac_fib **fib, int flags);
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extern void aac_release_sync_fib(struct aac_softc *sc);
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extern int aac_sync_fib(struct aac_softc *sc, u_int32_t command,
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u_int32_t xferstate, struct aac_fib *fib,
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u_int16_t datasize);
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/*
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* Debugging levels:
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* 0 - quiet, only emit warnings
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* 1 - noisy, emit major function points and things done
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* 2 - extremely noisy, emit trace items in loops, etc.
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*/
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#ifdef AAC_DEBUG
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# define debug(level, fmt, args...) \
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do { \
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if (level <=AAC_DEBUG) printf("%s: " fmt "\n", __func__ , ##args); \
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} while (0)
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# define debug_called(level) \
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do { \
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if (level <= AAC_DEBUG) printf("%s: called\n", __func__); \
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} while (0)
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extern void aac_print_queues(struct aac_softc *sc);
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extern void aac_panic(struct aac_softc *sc, char *reason);
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extern void aac_print_fib(struct aac_softc *sc, struct aac_fib *fib,
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char *caller);
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extern void aac_print_aif(struct aac_softc *sc,
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struct aac_aif_command *aif);
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#define AAC_PRINT_FIB(sc, fib) aac_print_fib(sc, fib, __func__)
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#else
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# define debug(level, fmt, args...)
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# define debug_called(level)
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# define aac_print_queues(sc)
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# define aac_panic(sc, reason)
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# define AAC_PRINT_FIB(sc, fib)
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# define aac_print_aif(sc, aac_aif_command)
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#endif
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struct aac_code_lookup {
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char *string;
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u_int32_t code;
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};
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/*
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* Queue primitives for driver queues.
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*/
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#define AACQ_ADD(sc, qname) \
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do { \
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struct aac_qstat *qs; \
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\
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qs = &(sc)->aac_qstat[qname]; \
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\
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qs->q_length++; \
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if (qs->q_length > qs->q_max) \
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qs->q_max = qs->q_length; \
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} while (0)
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#define AACQ_REMOVE(sc, qname) (sc)->aac_qstat[qname].q_length--
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#define AACQ_INIT(sc, qname) \
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do { \
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sc->aac_qstat[qname].q_length = 0; \
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sc->aac_qstat[qname].q_max = 0; \
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} while (0)
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#define AACQ_COMMAND_QUEUE(name, index) \
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static __inline void \
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aac_initq_ ## name (struct aac_softc *sc) \
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{ \
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TAILQ_INIT(&sc->aac_ ## name); \
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AACQ_INIT(sc, index); \
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} \
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static __inline void \
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aac_enqueue_ ## name (struct aac_command *cm) \
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{ \
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int s; \
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\
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s = splbio(); \
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if ((cm->cm_flags & AAC_ON_AACQ_MASK) != 0) { \
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printf("command %p is on another queue, flags = %#x\n", \
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cm, cm->cm_flags); \
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panic("command is on another queue"); \
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} \
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TAILQ_INSERT_TAIL(&cm->cm_sc->aac_ ## name, cm, cm_link); \
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cm->cm_flags |= AAC_ON_ ## index; \
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AACQ_ADD(cm->cm_sc, index); \
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splx(s); \
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} \
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static __inline void \
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aac_requeue_ ## name (struct aac_command *cm) \
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{ \
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int s; \
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\
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s = splbio(); \
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if ((cm->cm_flags & AAC_ON_AACQ_MASK) != 0) { \
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printf("command %p is on another queue, flags = %#x\n", \
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cm, cm->cm_flags); \
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panic("command is on another queue"); \
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} \
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TAILQ_INSERT_HEAD(&cm->cm_sc->aac_ ## name, cm, cm_link); \
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cm->cm_flags |= AAC_ON_ ## index; \
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AACQ_ADD(cm->cm_sc, index); \
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splx(s); \
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} \
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static __inline struct aac_command * \
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aac_dequeue_ ## name (struct aac_softc *sc) \
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{ \
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struct aac_command *cm; \
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int s; \
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\
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s = splbio(); \
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if ((cm = TAILQ_FIRST(&sc->aac_ ## name)) != NULL) { \
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if ((cm->cm_flags & AAC_ON_ ## index) == 0) { \
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printf("command %p not in queue, flags = %#x, " \
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"bit = %#x\n", cm, cm->cm_flags, \
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AAC_ON_ ## index); \
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panic("command not in queue"); \
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} \
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TAILQ_REMOVE(&sc->aac_ ## name, cm, cm_link); \
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cm->cm_flags &= ~AAC_ON_ ## index; \
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AACQ_REMOVE(sc, index); \
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} \
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splx(s); \
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return(cm); \
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} \
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static __inline void \
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aac_remove_ ## name (struct aac_command *cm) \
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{ \
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int s; \
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\
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s = splbio(); \
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if ((cm->cm_flags & AAC_ON_ ## index) == 0) { \
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printf("command %p not in queue, flags = %#x, " \
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"bit = %#x\n", cm, cm->cm_flags, \
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AAC_ON_ ## index); \
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panic("command not in queue"); \
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} \
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TAILQ_REMOVE(&cm->cm_sc->aac_ ## name, cm, cm_link); \
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cm->cm_flags &= ~AAC_ON_ ## index; \
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AACQ_REMOVE(cm->cm_sc, index); \
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splx(s); \
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} \
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struct hack
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AACQ_COMMAND_QUEUE(free, AACQ_FREE);
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AACQ_COMMAND_QUEUE(ready, AACQ_READY);
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AACQ_COMMAND_QUEUE(busy, AACQ_BUSY);
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AACQ_COMMAND_QUEUE(complete, AACQ_COMPLETE);
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/*
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* outstanding bio queue
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*/
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static __inline void
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aac_initq_bio(struct aac_softc *sc)
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{
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bioq_init(&sc->aac_bioq);
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AACQ_INIT(sc, AACQ_BIO);
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}
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static __inline void
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aac_enqueue_bio(struct aac_softc *sc, struct bio *bp)
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{
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int s;
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s = splbio();
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bioq_insert_tail(&sc->aac_bioq, bp);
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AACQ_ADD(sc, AACQ_BIO);
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splx(s);
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}
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static __inline struct bio *
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aac_dequeue_bio(struct aac_softc *sc)
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{
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int s;
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struct bio *bp;
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|
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s = splbio();
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if ((bp = bioq_first(&sc->aac_bioq)) != NULL) {
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bioq_remove(&sc->aac_bioq, bp);
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AACQ_REMOVE(sc, AACQ_BIO);
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}
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splx(s);
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return(bp);
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}
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static __inline void
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aac_print_printf(struct aac_softc *sc)
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{
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/*
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* XXX We have the ability to read the length of the printf string
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* from out of the mailboxes.
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*/
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device_printf(sc->aac_dev, "**Monitor** %.*s", AAC_PRINTF_BUFSIZE,
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sc->aac_common->ac_printf);
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AAC_QNOTIFY(sc, AAC_DB_PRINTF);
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}
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