/drivers/scsi/aha152x.c
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- /* aha152x.c -- Adaptec AHA-152x driver
- * Author: Jürgen E. Fischer, fischer@norbit.de
- * Copyright 1993-2004 Jürgen E. Fischer
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2, or (at your option) any
- * later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- *
- * $Id: aha152x.c,v 2.7 2004/01/24 11:42:59 fischer Exp $
- *
- * $Log: aha152x.c,v $
- * Revision 2.7 2004/01/24 11:42:59 fischer
- * - gather code that is not used by PCMCIA at the end
- * - move request_region for !PCMCIA case to detection
- * - migration to new scsi host api (remove legacy code)
- * - free host scribble before scsi_done
- * - fix error handling
- * - one isapnp device added to id_table
- *
- * Revision 2.6 2003/10/30 20:52:47 fischer
- * - interfaces changes for kernel 2.6
- * - aha152x_probe_one introduced for pcmcia stub
- * - fixed pnpdev handling
- * - instead of allocation a new one, reuse command for request sense after check condition and reset
- * - fixes race in is_complete
- *
- * Revision 2.5 2002/04/14 11:24:53 fischer
- * - isapnp support
- * - abort fixed
- * - 2.5 support
- *
- * Revision 2.4 2000/12/16 12:53:56 fischer
- * - allow REQUEST SENSE to be queued
- * - handle shared PCI interrupts
- *
- * Revision 2.3 2000/11/04 16:40:26 fischer
- * - handle data overruns
- * - extend timeout for data phases
- *
- * Revision 2.2 2000/08/08 19:54:53 fischer
- * - minor changes
- *
- * Revision 2.1 2000/05/17 16:23:17 fischer
- * - signature update
- * - fix for data out w/o scatter gather
- *
- * Revision 2.0 1999/12/25 15:07:32 fischer
- * - interrupt routine completly reworked
- * - basic support for new eh code
- *
- * Revision 1.21 1999/11/10 23:46:36 fischer
- * - default to synchronous operation
- * - synchronous negotiation fixed
- * - added timeout to loops
- * - debugging output can be controlled through procfs
- *
- * Revision 1.20 1999/11/07 18:37:31 fischer
- * - synchronous operation works
- * - resid support for sg driver
- *
- * Revision 1.19 1999/11/02 22:39:59 fischer
- * - moved leading comments to README.aha152x
- * - new additional module parameters
- * - updates for 2.3
- * - support for the Tripace TC1550 controller
- * - interrupt handling changed
- *
- * Revision 1.18 1996/09/07 20:10:40 fischer
- * - fixed can_queue handling (multiple outstanding commands working again)
- *
- * Revision 1.17 1996/08/17 16:05:14 fischer
- * - biosparam improved
- * - interrupt verification
- * - updated documentation
- * - cleanups
- *
- * Revision 1.16 1996/06/09 00:04:56 root
- * - added configuration symbols for insmod (aha152x/aha152x1)
- *
- * Revision 1.15 1996/04/30 14:52:06 fischer
- * - proc info fixed
- * - support for extended translation for >1GB disks
- *
- * Revision 1.14 1996/01/17 15:11:20 fischer
- * - fixed lockup in MESSAGE IN phase after reconnection
- *
- * Revision 1.13 1996/01/09 02:15:53 fischer
- * - some cleanups
- * - moved request_irq behind controller initialization
- * (to avoid spurious interrupts)
- *
- * Revision 1.12 1995/12/16 12:26:07 fischer
- * - barrier()s added
- * - configurable RESET delay added
- *
- * Revision 1.11 1995/12/06 21:18:35 fischer
- * - some minor updates
- *
- * Revision 1.10 1995/07/22 19:18:45 fischer
- * - support for 2 controllers
- * - started synchronous data transfers (not working yet)
- *
- * Revision 1.9 1995/03/18 09:20:24 root
- * - patches for PCMCIA and modules
- *
- * Revision 1.8 1995/01/21 22:07:19 root
- * - snarf_region => request_region
- * - aha152x_intr interface change
- *
- * Revision 1.7 1995/01/02 23:19:36 root
- * - updated COMMAND_SIZE to cmd_len
- * - changed sti() to restore_flags()
- * - fixed some #ifdef which generated warnings
- *
- * Revision 1.6 1994/11/24 20:35:27 root
- * - problem with odd number of bytes in fifo fixed
- *
- * Revision 1.5 1994/10/30 14:39:56 root
- * - abort code fixed
- * - debugging improved
- *
- * Revision 1.4 1994/09/12 11:33:01 root
- * - irqaction to request_irq
- * - abortion updated
- *
- * Revision 1.3 1994/08/04 13:53:05 root
- * - updates for mid-level-driver changes
- * - accept unexpected BUSFREE phase as error condition
- * - parity check now configurable
- *
- * Revision 1.2 1994/07/03 12:56:36 root
- * - cleaned up debugging code
- * - more tweaking on reset delays
- * - updated abort/reset code (pretty untested...)
- *
- * Revision 1.1 1994/05/28 21:18:49 root
- * - update for mid-level interface change (abort-reset)
- * - delays after resets adjusted for some slow devices
- *
- * Revision 1.0 1994/03/25 12:52:00 root
- * - Fixed "more data than expected" problem
- * - added new BIOS signatures
- *
- * Revision 0.102 1994/01/31 20:44:12 root
- * - minor changes in insw/outsw handling
- *
- * Revision 0.101 1993/12/13 01:16:27 root
- * - fixed STATUS phase (non-GOOD stati were dropped sometimes;
- * fixes problems with CD-ROM sector size detection & media change)
- *
- * Revision 0.100 1993/12/10 16:58:47 root
- * - fix for unsuccessful selections in case of non-continuous id assignments
- * on the scsi bus.
- *
- * Revision 0.99 1993/10/24 16:19:59 root
- * - fixed DATA IN (rare read errors gone)
- *
- * Revision 0.98 1993/10/17 12:54:44 root
- * - fixed some recent fixes (shame on me)
- * - moved initialization of scratch area to aha152x_queue
- *
- * Revision 0.97 1993/10/09 18:53:53 root
- * - DATA IN fixed. Rarely left data in the fifo.
- *
- * Revision 0.96 1993/10/03 00:53:59 root
- * - minor changes on DATA IN
- *
- * Revision 0.95 1993/09/24 10:36:01 root
- * - change handling of MSGI after reselection
- * - fixed sti/cli
- * - minor changes
- *
- * Revision 0.94 1993/09/18 14:08:22 root
- * - fixed bug in multiple outstanding command code
- * - changed detection
- * - support for kernel command line configuration
- * - reset corrected
- * - changed message handling
- *
- * Revision 0.93 1993/09/15 20:41:19 root
- * - fixed bugs with multiple outstanding commands
- *
- * Revision 0.92 1993/09/13 02:46:33 root
- * - multiple outstanding commands work (no problems with IBM drive)
- *
- * Revision 0.91 1993/09/12 20:51:46 root
- * added multiple outstanding commands
- * (some problem with this $%&? IBM device remain)
- *
- * Revision 0.9 1993/09/12 11:11:22 root
- * - corrected auto-configuration
- * - changed the auto-configuration (added some '#define's)
- * - added support for dis-/reconnection
- *
- * Revision 0.8 1993/09/06 23:09:39 root
- * - added support for the drive activity light
- * - minor changes
- *
- * Revision 0.7 1993/09/05 14:30:15 root
- * - improved phase detection
- * - now using the new snarf_region code of 0.99pl13
- *
- * Revision 0.6 1993/09/02 11:01:38 root
- * first public release; added some signatures and biosparam()
- *
- * Revision 0.5 1993/08/30 10:23:30 root
- * fixed timing problems with my IBM drive
- *
- * Revision 0.4 1993/08/29 14:06:52 root
- * fixed some problems with timeouts due incomplete commands
- *
- * Revision 0.3 1993/08/28 15:55:03 root
- * writing data works too. mounted and worked on a dos partition
- *
- * Revision 0.2 1993/08/27 22:42:07 root
- * reading data works. Mounted a msdos partition.
- *
- * Revision 0.1 1993/08/25 13:38:30 root
- * first "damn thing doesn't work" version
- *
- * Revision 0.0 1993/08/14 19:54:25 root
- * empty function bodies; detect() works.
- *
- *
- **************************************************************************
-
- see Documentation/scsi/aha152x.txt for configuration details
- **************************************************************************/
- #include <linux/module.h>
- #include <asm/irq.h>
- #include <linux/io.h>
- #include <linux/blkdev.h>
- #include <asm/system.h>
- #include <linux/completion.h>
- #include <linux/errno.h>
- #include <linux/string.h>
- #include <linux/wait.h>
- #include <linux/ioport.h>
- #include <linux/delay.h>
- #include <linux/proc_fs.h>
- #include <linux/interrupt.h>
- #include <linux/init.h>
- #include <linux/kernel.h>
- #include <linux/isapnp.h>
- #include <linux/spinlock.h>
- #include <linux/workqueue.h>
- #include <linux/list.h>
- #include <linux/slab.h>
- #include <scsi/scsicam.h>
- #include "scsi.h"
- #include <scsi/scsi_dbg.h>
- #include <scsi/scsi_host.h>
- #include <scsi/scsi_transport_spi.h>
- #include <scsi/scsi_eh.h>
- #include "aha152x.h"
- static LIST_HEAD(aha152x_host_list);
- /* DEFINES */
- /* For PCMCIA cards, always use AUTOCONF */
- #if defined(PCMCIA) || defined(MODULE)
- #if !defined(AUTOCONF)
- #define AUTOCONF
- #endif
- #endif
- #if !defined(AUTOCONF) && !defined(SETUP0)
- #error define AUTOCONF or SETUP0
- #endif
- #if defined(AHA152X_DEBUG)
- #define DEBUG_DEFAULT debug_eh
- #define DPRINTK(when,msgs...) \
- do { if(HOSTDATA(shpnt)->debug & (when)) printk(msgs); } while(0)
- #define DO_LOCK(flags) \
- do { \
- if(spin_is_locked(&QLOCK)) { \
- DPRINTK(debug_intr, DEBUG_LEAD "(%s:%d) already locked at %s:%d\n", CMDINFO(CURRENT_SC), __func__, __LINE__, QLOCKER, QLOCKERL); \
- } \
- DPRINTK(debug_locking, DEBUG_LEAD "(%s:%d) locking\n", CMDINFO(CURRENT_SC), __func__, __LINE__); \
- spin_lock_irqsave(&QLOCK,flags); \
- DPRINTK(debug_locking, DEBUG_LEAD "(%s:%d) locked\n", CMDINFO(CURRENT_SC), __func__, __LINE__); \
- QLOCKER=__func__; \
- QLOCKERL=__LINE__; \
- } while(0)
- #define DO_UNLOCK(flags) \
- do { \
- DPRINTK(debug_locking, DEBUG_LEAD "(%s:%d) unlocking (locked at %s:%d)\n", CMDINFO(CURRENT_SC), __func__, __LINE__, QLOCKER, QLOCKERL); \
- spin_unlock_irqrestore(&QLOCK,flags); \
- DPRINTK(debug_locking, DEBUG_LEAD "(%s:%d) unlocked\n", CMDINFO(CURRENT_SC), __func__, __LINE__); \
- QLOCKER="(not locked)"; \
- QLOCKERL=0; \
- } while(0)
- #else
- #define DPRINTK(when,msgs...)
- #define DO_LOCK(flags) spin_lock_irqsave(&QLOCK,flags)
- #define DO_UNLOCK(flags) spin_unlock_irqrestore(&QLOCK,flags)
- #endif
- #define LEAD "(scsi%d:%d:%d) "
- #define WARN_LEAD KERN_WARNING LEAD
- #define INFO_LEAD KERN_INFO LEAD
- #define NOTE_LEAD KERN_NOTICE LEAD
- #define ERR_LEAD KERN_ERR LEAD
- #define DEBUG_LEAD KERN_DEBUG LEAD
- #define CMDINFO(cmd) \
- (cmd) ? ((cmd)->device->host->host_no) : -1, \
- (cmd) ? ((cmd)->device->id & 0x0f) : -1, \
- (cmd) ? ((cmd)->device->lun & 0x07) : -1
- static inline void
- CMD_INC_RESID(struct scsi_cmnd *cmd, int inc)
- {
- scsi_set_resid(cmd, scsi_get_resid(cmd) + inc);
- }
- #define DELAY_DEFAULT 1000
- #if defined(PCMCIA)
- #define IRQ_MIN 0
- #define IRQ_MAX 16
- #else
- #define IRQ_MIN 9
- #if defined(__PPC)
- #define IRQ_MAX (nr_irqs-1)
- #else
- #define IRQ_MAX 12
- #endif
- #endif
- enum {
- not_issued = 0x0001, /* command not yet issued */
- selecting = 0x0002, /* target is beeing selected */
- identified = 0x0004, /* IDENTIFY was sent */
- disconnected = 0x0008, /* target disconnected */
- completed = 0x0010, /* target sent COMMAND COMPLETE */
- aborted = 0x0020, /* ABORT was sent */
- resetted = 0x0040, /* BUS DEVICE RESET was sent */
- spiordy = 0x0080, /* waiting for SPIORDY to raise */
- syncneg = 0x0100, /* synchronous negotiation in progress */
- aborting = 0x0200, /* ABORT is pending */
- resetting = 0x0400, /* BUS DEVICE RESET is pending */
- check_condition = 0x0800, /* requesting sense after CHECK CONDITION */
- };
- MODULE_AUTHOR("Jürgen Fischer");
- MODULE_DESCRIPTION(AHA152X_REVID);
- MODULE_LICENSE("GPL");
- #if !defined(PCMCIA)
- #if defined(MODULE)
- static int io[] = {0, 0};
- module_param_array(io, int, NULL, 0);
- MODULE_PARM_DESC(io,"base io address of controller");
- static int irq[] = {0, 0};
- module_param_array(irq, int, NULL, 0);
- MODULE_PARM_DESC(irq,"interrupt for controller");
- static int scsiid[] = {7, 7};
- module_param_array(scsiid, int, NULL, 0);
- MODULE_PARM_DESC(scsiid,"scsi id of controller");
- static int reconnect[] = {1, 1};
- module_param_array(reconnect, int, NULL, 0);
- MODULE_PARM_DESC(reconnect,"allow targets to disconnect");
- static int parity[] = {1, 1};
- module_param_array(parity, int, NULL, 0);
- MODULE_PARM_DESC(parity,"use scsi parity");
- static int sync[] = {1, 1};
- module_param_array(sync, int, NULL, 0);
- MODULE_PARM_DESC(sync,"use synchronous transfers");
- static int delay[] = {DELAY_DEFAULT, DELAY_DEFAULT};
- module_param_array(delay, int, NULL, 0);
- MODULE_PARM_DESC(delay,"scsi reset delay");
- static int exttrans[] = {0, 0};
- module_param_array(exttrans, int, NULL, 0);
- MODULE_PARM_DESC(exttrans,"use extended translation");
- #if !defined(AHA152X_DEBUG)
- static int aha152x[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0};
- module_param_array(aha152x, int, NULL, 0);
- MODULE_PARM_DESC(aha152x, "parameters for first controller");
- static int aha152x1[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0};
- module_param_array(aha152x1, int, NULL, 0);
- MODULE_PARM_DESC(aha152x1, "parameters for second controller");
- #else
- static int debug[] = {DEBUG_DEFAULT, DEBUG_DEFAULT};
- module_param_array(debug, int, NULL, 0);
- MODULE_PARM_DESC(debug, "flags for driver debugging");
- static int aha152x[] = {0, 11, 7, 1, 1, 1, DELAY_DEFAULT, 0, DEBUG_DEFAULT};
- module_param_array(aha152x, int, NULL, 0);
- MODULE_PARM_DESC(aha152x, "parameters for first controller");
- static int aha152x1[] = {0, 11, 7, 1, 1, 1, DELAY_DEFAULT, 0, DEBUG_DEFAULT};
- module_param_array(aha152x1, int, NULL, 0);
- MODULE_PARM_DESC(aha152x1, "parameters for second controller");
- #endif /* !defined(AHA152X_DEBUG) */
- #endif /* MODULE */
- #ifdef __ISAPNP__
- static struct isapnp_device_id id_table[] __devinitdata = {
- { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1502), 0 },
- { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1505), 0 },
- { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1510), 0 },
- { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1515), 0 },
- { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1520), 0 },
- { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x2015), 0 },
- { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1522), 0 },
- { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x2215), 0 },
- { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1530), 0 },
- { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x3015), 0 },
- { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1532), 0 },
- { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x3215), 0 },
- { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x6360), 0 },
- { ISAPNP_DEVICE_SINGLE_END, }
- };
- MODULE_DEVICE_TABLE(isapnp, id_table);
- #endif /* ISAPNP */
- #endif /* !PCMCIA */
- static struct scsi_host_template aha152x_driver_template;
- /*
- * internal states of the host
- *
- */
- enum aha152x_state {
- idle=0,
- unknown,
- seldo,
- seldi,
- selto,
- busfree,
- msgo,
- cmd,
- msgi,
- status,
- datai,
- datao,
- parerr,
- rsti,
- maxstate
- };
- /*
- * current state information of the host
- *
- */
- struct aha152x_hostdata {
- Scsi_Cmnd *issue_SC;
- /* pending commands to issue */
- Scsi_Cmnd *current_SC;
- /* current command on the bus */
- Scsi_Cmnd *disconnected_SC;
- /* commands that disconnected */
- Scsi_Cmnd *done_SC;
- /* command that was completed */
- spinlock_t lock;
- /* host lock */
- #if defined(AHA152X_DEBUG)
- const char *locker;
- /* which function has the lock */
- int lockerl; /* where did it get it */
- int debug; /* current debugging setting */
- #endif
- #if defined(AHA152X_STAT)
- int total_commands;
- int disconnections;
- int busfree_without_any_action;
- int busfree_without_old_command;
- int busfree_without_new_command;
- int busfree_without_done_command;
- int busfree_with_check_condition;
- int count[maxstate];
- int count_trans[maxstate];
- unsigned long time[maxstate];
- #endif
- int commands; /* current number of commands */
- int reconnect; /* disconnection allowed */
- int parity; /* parity checking enabled */
- int synchronous; /* synchronous transferes enabled */
- int delay; /* reset out delay */
- int ext_trans; /* extended translation enabled */
- int swint; /* software-interrupt was fired during detect() */
- int service; /* bh needs to be run */
- int in_intr; /* bh is running */
- /* current state,
- previous state,
- last state different from current state */
- enum aha152x_state state, prevstate, laststate;
- int target;
- /* reconnecting target */
- unsigned char syncrate[8];
- /* current synchronous transfer agreements */
- unsigned char syncneg[8];
- /* 0: no negotiation;
- * 1: negotiation in progress;
- * 2: negotiation completed
- */
- int cmd_i;
- /* number of sent bytes of current command */
- int msgi_len;
- /* number of received message bytes */
- unsigned char msgi[256];
- /* received message bytes */
- int msgo_i, msgo_len;
- /* number of sent bytes and length of current messages */
- unsigned char msgo[256];
- /* pending messages */
- int data_len;
- /* number of sent/received bytes in dataphase */
- unsigned long io_port0;
- unsigned long io_port1;
- #ifdef __ISAPNP__
- struct pnp_dev *pnpdev;
- #endif
- struct list_head host_list;
- };
- /*
- * host specific command extension
- *
- */
- struct aha152x_scdata {
- Scsi_Cmnd *next; /* next sc in queue */
- struct completion *done;/* semaphore to block on */
- struct scsi_eh_save ses;
- };
- /* access macros for hostdata */
- #define HOSTDATA(shpnt) ((struct aha152x_hostdata *) &shpnt->hostdata)
- #define HOSTNO ((shpnt)->host_no)
- #define CURRENT_SC (HOSTDATA(shpnt)->current_SC)
- #define DONE_SC (HOSTDATA(shpnt)->done_SC)
- #define ISSUE_SC (HOSTDATA(shpnt)->issue_SC)
- #define DISCONNECTED_SC (HOSTDATA(shpnt)->disconnected_SC)
- #define QLOCK (HOSTDATA(shpnt)->lock)
- #define QLOCKER (HOSTDATA(shpnt)->locker)
- #define QLOCKERL (HOSTDATA(shpnt)->lockerl)
- #define STATE (HOSTDATA(shpnt)->state)
- #define PREVSTATE (HOSTDATA(shpnt)->prevstate)
- #define LASTSTATE (HOSTDATA(shpnt)->laststate)
- #define RECONN_TARGET (HOSTDATA(shpnt)->target)
- #define CMD_I (HOSTDATA(shpnt)->cmd_i)
- #define MSGO(i) (HOSTDATA(shpnt)->msgo[i])
- #define MSGO_I (HOSTDATA(shpnt)->msgo_i)
- #define MSGOLEN (HOSTDATA(shpnt)->msgo_len)
- #define ADDMSGO(x) (MSGOLEN<256 ? (void)(MSGO(MSGOLEN++)=x) : aha152x_error(shpnt,"MSGO overflow"))
- #define MSGI(i) (HOSTDATA(shpnt)->msgi[i])
- #define MSGILEN (HOSTDATA(shpnt)->msgi_len)
- #define ADDMSGI(x) (MSGILEN<256 ? (void)(MSGI(MSGILEN++)=x) : aha152x_error(shpnt,"MSGI overflow"))
- #define DATA_LEN (HOSTDATA(shpnt)->data_len)
- #define SYNCRATE (HOSTDATA(shpnt)->syncrate[CURRENT_SC->device->id])
- #define SYNCNEG (HOSTDATA(shpnt)->syncneg[CURRENT_SC->device->id])
- #define DELAY (HOSTDATA(shpnt)->delay)
- #define EXT_TRANS (HOSTDATA(shpnt)->ext_trans)
- #define TC1550 (HOSTDATA(shpnt)->tc1550)
- #define RECONNECT (HOSTDATA(shpnt)->reconnect)
- #define PARITY (HOSTDATA(shpnt)->parity)
- #define SYNCHRONOUS (HOSTDATA(shpnt)->synchronous)
- #define HOSTIOPORT0 (HOSTDATA(shpnt)->io_port0)
- #define HOSTIOPORT1 (HOSTDATA(shpnt)->io_port1)
- #define SCDATA(SCpnt) ((struct aha152x_scdata *) (SCpnt)->host_scribble)
- #define SCNEXT(SCpnt) SCDATA(SCpnt)->next
- #define SCSEM(SCpnt) SCDATA(SCpnt)->done
- #define SG_ADDRESS(buffer) ((char *) sg_virt((buffer)))
- /* state handling */
- static void seldi_run(struct Scsi_Host *shpnt);
- static void seldo_run(struct Scsi_Host *shpnt);
- static void selto_run(struct Scsi_Host *shpnt);
- static void busfree_run(struct Scsi_Host *shpnt);
- static void msgo_init(struct Scsi_Host *shpnt);
- static void msgo_run(struct Scsi_Host *shpnt);
- static void msgo_end(struct Scsi_Host *shpnt);
- static void cmd_init(struct Scsi_Host *shpnt);
- static void cmd_run(struct Scsi_Host *shpnt);
- static void cmd_end(struct Scsi_Host *shpnt);
- static void datai_init(struct Scsi_Host *shpnt);
- static void datai_run(struct Scsi_Host *shpnt);
- static void datai_end(struct Scsi_Host *shpnt);
- static void datao_init(struct Scsi_Host *shpnt);
- static void datao_run(struct Scsi_Host *shpnt);
- static void datao_end(struct Scsi_Host *shpnt);
- static void status_run(struct Scsi_Host *shpnt);
- static void msgi_run(struct Scsi_Host *shpnt);
- static void msgi_end(struct Scsi_Host *shpnt);
- static void parerr_run(struct Scsi_Host *shpnt);
- static void rsti_run(struct Scsi_Host *shpnt);
- static void is_complete(struct Scsi_Host *shpnt);
- /*
- * driver states
- *
- */
- static struct {
- char *name;
- void (*init)(struct Scsi_Host *);
- void (*run)(struct Scsi_Host *);
- void (*end)(struct Scsi_Host *);
- int spio;
- } states[] = {
- { "idle", NULL, NULL, NULL, 0},
- { "unknown", NULL, NULL, NULL, 0},
- { "seldo", NULL, seldo_run, NULL, 0},
- { "seldi", NULL, seldi_run, NULL, 0},
- { "selto", NULL, selto_run, NULL, 0},
- { "busfree", NULL, busfree_run, NULL, 0},
- { "msgo", msgo_init, msgo_run, msgo_end, 1},
- { "cmd", cmd_init, cmd_run, cmd_end, 1},
- { "msgi", NULL, msgi_run, msgi_end, 1},
- { "status", NULL, status_run, NULL, 1},
- { "datai", datai_init, datai_run, datai_end, 0},
- { "datao", datao_init, datao_run, datao_end, 0},
- { "parerr", NULL, parerr_run, NULL, 0},
- { "rsti", NULL, rsti_run, NULL, 0},
- };
- /* setup & interrupt */
- static irqreturn_t intr(int irq, void *dev_id);
- static void reset_ports(struct Scsi_Host *shpnt);
- static void aha152x_error(struct Scsi_Host *shpnt, char *msg);
- static void done(struct Scsi_Host *shpnt, int error);
- /* diagnostics */
- static void disp_ports(struct Scsi_Host *shpnt);
- static void show_command(Scsi_Cmnd * ptr);
- static void show_queues(struct Scsi_Host *shpnt);
- static void disp_enintr(struct Scsi_Host *shpnt);
- /*
- * queue services:
- *
- */
- static inline void append_SC(Scsi_Cmnd **SC, Scsi_Cmnd *new_SC)
- {
- Scsi_Cmnd *end;
- SCNEXT(new_SC) = NULL;
- if (!*SC)
- *SC = new_SC;
- else {
- for (end = *SC; SCNEXT(end); end = SCNEXT(end))
- ;
- SCNEXT(end) = new_SC;
- }
- }
- static inline Scsi_Cmnd *remove_first_SC(Scsi_Cmnd ** SC)
- {
- Scsi_Cmnd *ptr;
- ptr = *SC;
- if (ptr) {
- *SC = SCNEXT(*SC);
- SCNEXT(ptr)=NULL;
- }
- return ptr;
- }
- static inline Scsi_Cmnd *remove_lun_SC(Scsi_Cmnd ** SC, int target, int lun)
- {
- Scsi_Cmnd *ptr, *prev;
- for (ptr = *SC, prev = NULL;
- ptr && ((ptr->device->id != target) || (ptr->device->lun != lun));
- prev = ptr, ptr = SCNEXT(ptr))
- ;
- if (ptr) {
- if (prev)
- SCNEXT(prev) = SCNEXT(ptr);
- else
- *SC = SCNEXT(ptr);
- SCNEXT(ptr)=NULL;
- }
- return ptr;
- }
- static inline Scsi_Cmnd *remove_SC(Scsi_Cmnd **SC, Scsi_Cmnd *SCp)
- {
- Scsi_Cmnd *ptr, *prev;
- for (ptr = *SC, prev = NULL;
- ptr && SCp!=ptr;
- prev = ptr, ptr = SCNEXT(ptr))
- ;
- if (ptr) {
- if (prev)
- SCNEXT(prev) = SCNEXT(ptr);
- else
- *SC = SCNEXT(ptr);
- SCNEXT(ptr)=NULL;
- }
- return ptr;
- }
- static irqreturn_t swintr(int irqno, void *dev_id)
- {
- struct Scsi_Host *shpnt = dev_id;
- HOSTDATA(shpnt)->swint++;
- SETPORT(DMACNTRL0, INTEN);
- return IRQ_HANDLED;
- }
- struct Scsi_Host *aha152x_probe_one(struct aha152x_setup *setup)
- {
- struct Scsi_Host *shpnt;
- shpnt = scsi_host_alloc(&aha152x_driver_template, sizeof(struct aha152x_hostdata));
- if (!shpnt) {
- printk(KERN_ERR "aha152x: scsi_host_alloc failed\n");
- return NULL;
- }
- memset(HOSTDATA(shpnt), 0, sizeof *HOSTDATA(shpnt));
- INIT_LIST_HEAD(&HOSTDATA(shpnt)->host_list);
- /* need to have host registered before triggering any interrupt */
- list_add_tail(&HOSTDATA(shpnt)->host_list, &aha152x_host_list);
- shpnt->io_port = setup->io_port;
- shpnt->n_io_port = IO_RANGE;
- shpnt->irq = setup->irq;
- if (!setup->tc1550) {
- HOSTIOPORT0 = setup->io_port;
- HOSTIOPORT1 = setup->io_port;
- } else {
- HOSTIOPORT0 = setup->io_port+0x10;
- HOSTIOPORT1 = setup->io_port-0x10;
- }
- spin_lock_init(&QLOCK);
- RECONNECT = setup->reconnect;
- SYNCHRONOUS = setup->synchronous;
- PARITY = setup->parity;
- DELAY = setup->delay;
- EXT_TRANS = setup->ext_trans;
- #if defined(AHA152X_DEBUG)
- HOSTDATA(shpnt)->debug = setup->debug;
- #endif
- SETPORT(SCSIID, setup->scsiid << 4);
- shpnt->this_id = setup->scsiid;
- if (setup->reconnect)
- shpnt->can_queue = AHA152X_MAXQUEUE;
- /* RESET OUT */
- printk("aha152x: resetting bus...\n");
- SETPORT(SCSISEQ, SCSIRSTO);
- mdelay(256);
- SETPORT(SCSISEQ, 0);
- mdelay(DELAY);
- reset_ports(shpnt);
- printk(KERN_INFO
- "aha152x%d%s: "
- "vital data: rev=%x, "
- "io=0x%03lx (0x%03lx/0x%03lx), "
- "irq=%d, "
- "scsiid=%d, "
- "reconnect=%s, "
- "parity=%s, "
- "synchronous=%s, "
- "delay=%d, "
- "extended translation=%s\n",
- shpnt->host_no, setup->tc1550 ? " (tc1550 mode)" : "",
- GETPORT(REV) & 0x7,
- shpnt->io_port, HOSTIOPORT0, HOSTIOPORT1,
- shpnt->irq,
- shpnt->this_id,
- RECONNECT ? "enabled" : "disabled",
- PARITY ? "enabled" : "disabled",
- SYNCHRONOUS ? "enabled" : "disabled",
- DELAY,
- EXT_TRANS ? "enabled" : "disabled");
- /* not expecting any interrupts */
- SETPORT(SIMODE0, 0);
- SETPORT(SIMODE1, 0);
- if( request_irq(shpnt->irq, swintr, IRQF_DISABLED|IRQF_SHARED, "aha152x", shpnt) ) {
- printk(KERN_ERR "aha152x%d: irq %d busy.\n", shpnt->host_no, shpnt->irq);
- goto out_host_put;
- }
- HOSTDATA(shpnt)->swint = 0;
- printk(KERN_INFO "aha152x%d: trying software interrupt, ", shpnt->host_no);
- mb();
- SETPORT(DMACNTRL0, SWINT|INTEN);
- mdelay(1000);
- free_irq(shpnt->irq, shpnt);
- if (!HOSTDATA(shpnt)->swint) {
- if (TESTHI(DMASTAT, INTSTAT)) {
- printk("lost.\n");
- } else {
- printk("failed.\n");
- }
- SETPORT(DMACNTRL0, INTEN);
- printk(KERN_ERR "aha152x%d: irq %d possibly wrong. "
- "Please verify.\n", shpnt->host_no, shpnt->irq);
- goto out_host_put;
- }
- printk("ok.\n");
- /* clear interrupts */
- SETPORT(SSTAT0, 0x7f);
- SETPORT(SSTAT1, 0xef);
- if ( request_irq(shpnt->irq, intr, IRQF_DISABLED|IRQF_SHARED, "aha152x", shpnt) ) {
- printk(KERN_ERR "aha152x%d: failed to reassign irq %d.\n", shpnt->host_no, shpnt->irq);
- goto out_host_put;
- }
- if( scsi_add_host(shpnt, NULL) ) {
- free_irq(shpnt->irq, shpnt);
- printk(KERN_ERR "aha152x%d: failed to add host.\n", shpnt->host_no);
- goto out_host_put;
- }
- scsi_scan_host(shpnt);
- return shpnt;
- out_host_put:
- list_del(&HOSTDATA(shpnt)->host_list);
- scsi_host_put(shpnt);
- return NULL;
- }
- void aha152x_release(struct Scsi_Host *shpnt)
- {
- if (!shpnt)
- return;
- scsi_remove_host(shpnt);
- if (shpnt->irq)
- free_irq(shpnt->irq, shpnt);
- #if !defined(PCMCIA)
- if (shpnt->io_port)
- release_region(shpnt->io_port, IO_RANGE);
- #endif
- #ifdef __ISAPNP__
- if (HOSTDATA(shpnt)->pnpdev)
- pnp_device_detach(HOSTDATA(shpnt)->pnpdev);
- #endif
- list_del(&HOSTDATA(shpnt)->host_list);
- scsi_host_put(shpnt);
- }
- /*
- * setup controller to generate interrupts depending
- * on current state (lock has to be acquired)
- *
- */
- static int setup_expected_interrupts(struct Scsi_Host *shpnt)
- {
- if(CURRENT_SC) {
- CURRENT_SC->SCp.phase |= 1 << 16;
-
- if(CURRENT_SC->SCp.phase & selecting) {
- DPRINTK(debug_intr, DEBUG_LEAD "expecting: (seldo) (seltimo) (seldi)\n", CMDINFO(CURRENT_SC));
- SETPORT(SSTAT1, SELTO);
- SETPORT(SIMODE0, ENSELDO | (DISCONNECTED_SC ? ENSELDI : 0));
- SETPORT(SIMODE1, ENSELTIMO);
- } else {
- DPRINTK(debug_intr, DEBUG_LEAD "expecting: (phase change) (busfree) %s\n", CMDINFO(CURRENT_SC), CURRENT_SC->SCp.phase & spiordy ? "(spiordy)" : "");
- SETPORT(SIMODE0, (CURRENT_SC->SCp.phase & spiordy) ? ENSPIORDY : 0);
- SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE);
- }
- } else if(STATE==seldi) {
- DPRINTK(debug_intr, DEBUG_LEAD "expecting: (phase change) (identify)\n", CMDINFO(CURRENT_SC));
- SETPORT(SIMODE0, 0);
- SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE);
- } else {
- DPRINTK(debug_intr, DEBUG_LEAD "expecting: %s %s\n",
- CMDINFO(CURRENT_SC),
- DISCONNECTED_SC ? "(reselection)" : "",
- ISSUE_SC ? "(busfree)" : "");
- SETPORT(SIMODE0, DISCONNECTED_SC ? ENSELDI : 0);
- SETPORT(SIMODE1, ENSCSIRST | ( (ISSUE_SC||DONE_SC) ? ENBUSFREE : 0));
- }
- if(!HOSTDATA(shpnt)->in_intr)
- SETBITS(DMACNTRL0, INTEN);
- return TESTHI(DMASTAT, INTSTAT);
- }
- /*
- * Queue a command and setup interrupts for a free bus.
- */
- static int aha152x_internal_queue(Scsi_Cmnd *SCpnt, struct completion *complete,
- int phase, void (*done)(Scsi_Cmnd *))
- {
- struct Scsi_Host *shpnt = SCpnt->device->host;
- unsigned long flags;
- #if defined(AHA152X_DEBUG)
- if (HOSTDATA(shpnt)->debug & debug_queue) {
- printk(INFO_LEAD "queue: %p; cmd_len=%d pieces=%d size=%u cmnd=",
- CMDINFO(SCpnt), SCpnt, SCpnt->cmd_len,
- scsi_sg_count(SCpnt), scsi_bufflen(SCpnt));
- __scsi_print_command(SCpnt->cmnd);
- }
- #endif
- SCpnt->scsi_done = done;
- SCpnt->SCp.phase = not_issued | phase;
- SCpnt->SCp.Status = 0x1; /* Ilegal status by SCSI standard */
- SCpnt->SCp.Message = 0;
- SCpnt->SCp.have_data_in = 0;
- SCpnt->SCp.sent_command = 0;
- if(SCpnt->SCp.phase & (resetting|check_condition)) {
- if (!SCpnt->host_scribble || SCSEM(SCpnt) || SCNEXT(SCpnt)) {
- printk(ERR_LEAD "cannot reuse command\n", CMDINFO(SCpnt));
- return FAILED;
- }
- } else {
- SCpnt->host_scribble = kmalloc(sizeof(struct aha152x_scdata), GFP_ATOMIC);
- if(!SCpnt->host_scribble) {
- printk(ERR_LEAD "allocation failed\n", CMDINFO(SCpnt));
- return FAILED;
- }
- }
- SCNEXT(SCpnt) = NULL;
- SCSEM(SCpnt) = complete;
- /* setup scratch area
- SCp.ptr : buffer pointer
- SCp.this_residual : buffer length
- SCp.buffer : next buffer
- SCp.buffers_residual : left buffers in list
- SCp.phase : current state of the command */
- if ((phase & resetting) || !scsi_sglist(SCpnt)) {
- SCpnt->SCp.ptr = NULL;
- SCpnt->SCp.this_residual = 0;
- scsi_set_resid(SCpnt, 0);
- SCpnt->SCp.buffer = NULL;
- SCpnt->SCp.buffers_residual = 0;
- } else {
- scsi_set_resid(SCpnt, scsi_bufflen(SCpnt));
- SCpnt->SCp.buffer = scsi_sglist(SCpnt);
- SCpnt->SCp.ptr = SG_ADDRESS(SCpnt->SCp.buffer);
- SCpnt->SCp.this_residual = SCpnt->SCp.buffer->length;
- SCpnt->SCp.buffers_residual = scsi_sg_count(SCpnt) - 1;
- }
- DO_LOCK(flags);
- #if defined(AHA152X_STAT)
- HOSTDATA(shpnt)->total_commands++;
- #endif
- /* Turn led on, when this is the first command. */
- HOSTDATA(shpnt)->commands++;
- if (HOSTDATA(shpnt)->commands==1)
- SETPORT(PORTA, 1);
- append_SC(&ISSUE_SC, SCpnt);
- if(!HOSTDATA(shpnt)->in_intr)
- setup_expected_interrupts(shpnt);
- DO_UNLOCK(flags);
- return 0;
- }
- /*
- * queue a command
- *
- */
- static int aha152x_queue_lck(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
- {
- #if 0
- if(*SCpnt->cmnd == REQUEST_SENSE) {
- SCpnt->result = 0;
- done(SCpnt);
- return 0;
- }
- #endif
- return aha152x_internal_queue(SCpnt, NULL, 0, done);
- }
- static DEF_SCSI_QCMD(aha152x_queue)
- /*
- *
- *
- */
- static void reset_done(Scsi_Cmnd *SCpnt)
- {
- #if 0
- struct Scsi_Host *shpnt = SCpnt->host;
- DPRINTK(debug_eh, INFO_LEAD "reset_done called\n", CMDINFO(SCpnt));
- #endif
- if(SCSEM(SCpnt)) {
- complete(SCSEM(SCpnt));
- } else {
- printk(KERN_ERR "aha152x: reset_done w/o completion\n");
- }
- }
- /*
- * Abort a command
- *
- */
- static int aha152x_abort(Scsi_Cmnd *SCpnt)
- {
- struct Scsi_Host *shpnt = SCpnt->device->host;
- Scsi_Cmnd *ptr;
- unsigned long flags;
- #if defined(AHA152X_DEBUG)
- if(HOSTDATA(shpnt)->debug & debug_eh) {
- printk(DEBUG_LEAD "abort(%p)", CMDINFO(SCpnt), SCpnt);
- show_queues(shpnt);
- }
- #endif
- DO_LOCK(flags);
- ptr=remove_SC(&ISSUE_SC, SCpnt);
- if(ptr) {
- DPRINTK(debug_eh, DEBUG_LEAD "not yet issued - SUCCESS\n", CMDINFO(SCpnt));
- HOSTDATA(shpnt)->commands--;
- if (!HOSTDATA(shpnt)->commands)
- SETPORT(PORTA, 0);
- DO_UNLOCK(flags);
- kfree(SCpnt->host_scribble);
- SCpnt->host_scribble=NULL;
- return SUCCESS;
- }
- DO_UNLOCK(flags);
- /*
- * FIXME:
- * for current command: queue ABORT for message out and raise ATN
- * for disconnected command: pseudo SC with ABORT message or ABORT on reselection?
- *
- */
- printk(ERR_LEAD "cannot abort running or disconnected command\n", CMDINFO(SCpnt));
- return FAILED;
- }
- /*
- * Reset a device
- *
- */
- static int aha152x_device_reset(Scsi_Cmnd * SCpnt)
- {
- struct Scsi_Host *shpnt = SCpnt->device->host;
- DECLARE_COMPLETION(done);
- int ret, issued, disconnected;
- unsigned char old_cmd_len = SCpnt->cmd_len;
- unsigned long flags;
- unsigned long timeleft;
- #if defined(AHA152X_DEBUG)
- if(HOSTDATA(shpnt)->debug & debug_eh) {
- printk(INFO_LEAD "aha152x_device_reset(%p)", CMDINFO(SCpnt), SCpnt);
- show_queues(shpnt);
- }
- #endif
- if(CURRENT_SC==SCpnt) {
- printk(ERR_LEAD "cannot reset current device\n", CMDINFO(SCpnt));
- return FAILED;
- }
- DO_LOCK(flags);
- issued = remove_SC(&ISSUE_SC, SCpnt) == NULL;
- disconnected = issued && remove_SC(&DISCONNECTED_SC, SCpnt);
- DO_UNLOCK(flags);
- SCpnt->cmd_len = 0;
- aha152x_internal_queue(SCpnt, &done, resetting, reset_done);
- timeleft = wait_for_completion_timeout(&done, 100*HZ);
- if (!timeleft) {
- /* remove command from issue queue */
- DO_LOCK(flags);
- remove_SC(&ISSUE_SC, SCpnt);
- DO_UNLOCK(flags);
- }
- SCpnt->cmd_len = old_cmd_len;
- DO_LOCK(flags);
- if(SCpnt->SCp.phase & resetted) {
- HOSTDATA(shpnt)->commands--;
- if (!HOSTDATA(shpnt)->commands)
- SETPORT(PORTA, 0);
- kfree(SCpnt->host_scribble);
- SCpnt->host_scribble=NULL;
- ret = SUCCESS;
- } else {
- /* requeue */
- if(!issued) {
- append_SC(&ISSUE_SC, SCpnt);
- } else if(disconnected) {
- append_SC(&DISCONNECTED_SC, SCpnt);
- }
-
- ret = FAILED;
- }
- DO_UNLOCK(flags);
- return ret;
- }
- static void free_hard_reset_SCs(struct Scsi_Host *shpnt, Scsi_Cmnd **SCs)
- {
- Scsi_Cmnd *ptr;
- ptr=*SCs;
- while(ptr) {
- Scsi_Cmnd *next;
- if(SCDATA(ptr)) {
- next = SCNEXT(ptr);
- } else {
- printk(DEBUG_LEAD "queue corrupted at %p\n", CMDINFO(ptr), ptr);
- next = NULL;
- }
- if (!ptr->device->soft_reset) {
- DPRINTK(debug_eh, DEBUG_LEAD "disconnected command %p removed\n", CMDINFO(ptr), ptr);
- remove_SC(SCs, ptr);
- HOSTDATA(shpnt)->commands--;
- kfree(ptr->host_scribble);
- ptr->host_scribble=NULL;
- }
- ptr = next;
- }
- }
- /*
- * Reset the bus
- *
- */
- static int aha152x_bus_reset_host(struct Scsi_Host *shpnt)
- {
- unsigned long flags;
- DO_LOCK(flags);
- #if defined(AHA152X_DEBUG)
- if(HOSTDATA(shpnt)->debug & debug_eh) {
- printk(KERN_DEBUG "scsi%d: bus reset", shpnt->host_no);
- show_queues(shpnt);
- }
- #endif
- free_hard_reset_SCs(shpnt, &ISSUE_SC);
- free_hard_reset_SCs(shpnt, &DISCONNECTED_SC);
- DPRINTK(debug_eh, KERN_DEBUG "scsi%d: resetting bus\n", shpnt->host_no);
- SETPORT(SCSISEQ, SCSIRSTO);
- mdelay(256);
- SETPORT(SCSISEQ, 0);
- mdelay(DELAY);
- DPRINTK(debug_eh, KERN_DEBUG "scsi%d: bus resetted\n", shpnt->host_no);
- setup_expected_interrupts(shpnt);
- if(HOSTDATA(shpnt)->commands==0)
- SETPORT(PORTA, 0);
- DO_UNLOCK(flags);
- return SUCCESS;
- }
- /*
- * Reset the bus
- *
- */
- static int aha152x_bus_reset(Scsi_Cmnd *SCpnt)
- {
- return aha152x_bus_reset_host(SCpnt->device->host);
- }
- /*
- * Restore default values to the AIC-6260 registers and reset the fifos
- *
- */
- static void reset_ports(struct Scsi_Host *shpnt)
- {
- unsigned long flags;
- /* disable interrupts */
- SETPORT(DMACNTRL0, RSTFIFO);
- SETPORT(SCSISEQ, 0);
- SETPORT(SXFRCTL1, 0);
- SETPORT(SCSISIG, 0);
- SETRATE(0);
- /* clear all interrupt conditions */
- SETPORT(SSTAT0, 0x7f);
- SETPORT(SSTAT1, 0xef);
- SETPORT(SSTAT4, SYNCERR | FWERR | FRERR);
- SETPORT(DMACNTRL0, 0);
- SETPORT(DMACNTRL1, 0);
- SETPORT(BRSTCNTRL, 0xf1);
- /* clear SCSI fifos and transfer count */
- SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
- SETPORT(SXFRCTL0, CH1);
- DO_LOCK(flags);
- setup_expected_interrupts(shpnt);
- DO_UNLOCK(flags);
- }
- /*
- * Reset the host (bus and controller)
- *
- */
- int aha152x_host_reset_host(struct Scsi_Host *shpnt)
- {
- DPRINTK(debug_eh, KERN_DEBUG "scsi%d: host reset\n", shpnt->host_no);
- aha152x_bus_reset_host(shpnt);
- DPRINTK(debug_eh, KERN_DEBUG "scsi%d: resetting ports\n", shpnt->host_no);
- reset_ports(shpnt);
- return SUCCESS;
- }
- /*
- * Reset the host (bus and controller)
- *
- */
- static int aha152x_host_reset(Scsi_Cmnd *SCpnt)
- {
- return aha152x_host_reset_host(SCpnt->device->host);
- }
- /*
- * Return the "logical geometry"
- *
- */
- static int aha152x_biosparam(struct scsi_device *sdev, struct block_device *bdev,
- sector_t capacity, int *info_array)
- {
- struct Scsi_Host *shpnt = sdev->host;
- /* try default translation */
- info_array[0] = 64;
- info_array[1] = 32;
- info_array[2] = (unsigned long)capacity / (64 * 32);
- /* for disks >1GB do some guessing */
- if (info_array[2] >= 1024) {
- int info[3];
- /* try to figure out the geometry from the partition table */
- if (scsicam_bios_param(bdev, capacity, info) < 0 ||
- !((info[0] == 64 && info[1] == 32) || (info[0] == 255 && info[1] == 63))) {
- if (EXT_TRANS) {
- printk(KERN_NOTICE
- "aha152x: unable to verify geometry for disk with >1GB.\n"
- " using extended translation.\n");
- info_array[0] = 255;
- info_array[1] = 63;
- info_array[2] = (unsigned long)capacity / (255 * 63);
- } else {
- printk(KERN_NOTICE
- "aha152x: unable to verify geometry for disk with >1GB.\n"
- " Using default translation. Please verify yourself.\n"
- " Perhaps you need to enable extended translation in the driver.\n"
- " See Documentation/scsi/aha152x.txt for details.\n");
- }
- } else {
- info_array[0] = info[0];
- info_array[1] = info[1];
- info_array[2] = info[2];
- if (info[0] == 255 && !EXT_TRANS) {
- printk(KERN_NOTICE
- "aha152x: current partition table is using extended translation.\n"
- " using it also, although it's not explicitly enabled.\n");
- }
- }
- }
- return 0;
- }
- /*
- * Internal done function
- *
- */
- static void done(struct Scsi_Host *shpnt, int error)
- {
- if (CURRENT_SC) {
- if(DONE_SC)
- printk(ERR_LEAD "there's already a completed command %p - will cause abort\n", CMDINFO(CURRENT_SC), DONE_SC);
- DONE_SC = CURRENT_SC;
- CURRENT_SC = NULL;
- DONE_SC->result = error;
- } else
- printk(KERN_ERR "aha152x: done() called outside of command\n");
- }
- static struct work_struct aha152x_tq;
- /*
- * Run service completions on the card with interrupts enabled.
- *
- */
- static void run(struct work_struct *work)
- {
- struct aha152x_hostdata *hd;
- list_for_each_entry(hd, &aha152x_host_list, host_list) {
- struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata);
- is_complete(shost);
- }
- }
- /*
- * Interrupt handler
- *
- */
- static irqreturn_t intr(int irqno, void *dev_id)
- {
- struct Scsi_Host *shpnt = dev_id;
- unsigned long flags;
- unsigned char rev, dmacntrl0;
- /*
- * Read a couple of registers that are known to not be all 1's. If
- * we read all 1's (-1), that means that either:
- *
- * a. The host adapter chip has gone bad, and we cannot control it,
- * OR
- * b. The host adapter is a PCMCIA card that has been ejected
- *
- * In either case, we cannot do anything with the host adapter at
- * this point in time. So just ignore the interrupt and return.
- * In the latter case, the interrupt might actually be meant for
- * someone else sharing this IRQ, and that driver will handle it.
- */
- rev = GETPORT(REV);
- dmacntrl0 = GETPORT(DMACNTRL0);
- if ((rev == 0xFF) && (dmacntrl0 == 0xFF))
- return IRQ_NONE;
- if( TESTLO(DMASTAT, INTSTAT) )
- return IRQ_NONE;
- /* no more interrupts from the controller, while we're busy.
- INTEN is restored by the BH handler */
- CLRBITS(DMACNTRL0, INTEN);
- DO_LOCK(flags);
- if( HOSTDATA(shpnt)->service==0 ) {
- HOSTDATA(shpnt)->service=1;
- /* Poke the BH handler */
- INIT_WORK(&aha152x_tq, run);
- schedule_work(&aha152x_tq);
- }
- DO_UNLOCK(flags);
- return IRQ_HANDLED;
- }
- /*
- * busfree phase
- * - handle completition/disconnection/error of current command
- * - start selection for next command (if any)
- */
- static void busfree_run(struct Scsi_Host *shpnt)
- {
- unsigned long flags;
- #if defined(AHA152X_STAT)
- int action=0;
- #endif
- SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
- SETPORT(SXFRCTL0, CH1);
- SETPORT(SSTAT1, CLRBUSFREE);
-
- if(CURRENT_SC) {
- #if defined(AHA152X_STAT)
- action++;
- #endif
- CURRENT_SC->SCp.phase &= ~syncneg;
- if(CURRENT_SC->SCp.phase & completed) {
- /* target sent COMMAND COMPLETE */
- done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16));
- } else if(CURRENT_SC->SCp.phase & aborted) {
- DPRINTK(debug_eh, DEBUG_LEAD "ABORT sent\n", CMDINFO(CURRENT_SC));
- done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_ABORT << 16));
- } else if(CURRENT_SC->SCp.phase & resetted) {
- DPRINTK(debug_eh, DEBUG_LEAD "BUS DEVICE RESET sent\n", CMDINFO(CURRENT_SC));
- done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_RESET << 16));
- } else if(CURRENT_SC->SCp.phase & disconnected) {
- /* target sent DISCONNECT */
- DPRINTK(debug_selection, DEBUG_LEAD "target disconnected at %d/%d\n",
- CMDINFO(CURRENT_SC),
- scsi_get_resid(CURRENT_SC),
- scsi_bufflen(CURRENT_SC));
- #if defined(AHA152X_STAT)
- HOSTDATA(shpnt)->disconnections++;
- #endif
- append_SC(&DISCONNECTED_SC, CURRENT_SC);
- CURRENT_SC->SCp.phase |= 1 << 16;
- CURRENT_SC = NULL;
- } else {
- done(shpnt, DID_ERROR << 16);
- }
- #if defined(AHA152X_STAT)
- } else {
- HOSTDATA(shpnt)->busfree_without_old_command++;
- #endif
- }
- DO_LOCK(flags);
- if(DONE_SC) {
- #if defined(AHA152X_STAT)
- action++;
- #endif
- if(DONE_SC->SCp.phase & check_condition) {
- struct scsi_cmnd *cmd = HOSTDATA(shpnt)->done_SC;
- struct aha152x_scdata *sc = SCDATA(cmd);
- #if 0
- if(HOSTDATA(shpnt)->debug & debug_eh) {
- printk(ERR_LEAD "received sense: ", CMDINFO(DONE_SC));
- scsi_print_sense("bh", DONE_SC);
- }
- #endif
- scsi_eh_restore_cmnd(cmd, &sc->ses);
- cmd->SCp.Status = SAM_STAT_CHECK_CONDITION;
- HOSTDATA(shpnt)->commands--;
- if (!HOSTDATA(shpnt)->commands)
- SETPORT(PORTA, 0); /* turn led off */
- } else if(DONE_SC->SCp.Status==SAM_STAT_CHECK_CONDITION) {
- #if defined(AHA152X_STAT)
- HOSTDATA(shpnt)->busfree_with_check_condition++;
- #endif
- #if 0
- DPRINTK(debug_eh, ERR_LEAD "CHECK CONDITION found\n", CMDINFO(DONE_SC));
- #endif
- if(!(DONE_SC->SCp.phase & not_issued)) {
- struct aha152x_scdata *sc;
- Scsi_Cmnd *ptr = DONE_SC;
- DONE_SC=NULL;
- #if 0
- DPRINTK(debug_eh, ERR_LEAD "requesting sense\n", CMDINFO(ptr));
- #endif
- sc = SCDATA(ptr);
- /* It was allocated in aha152x_internal_queue? */
- BUG_ON(!sc);
- scsi_eh_prep_cmnd(ptr, &sc->ses, NULL, 0, ~0);
- DO_UNLOCK(flags);
- aha152x_internal_queue(ptr, NULL, check_condition, ptr->scsi_done);
- DO_LOCK(flags);
- #if 0
- } else {
- DPRINTK(debug_eh, ERR_LEAD "command not issued - CHECK CONDITION ignored\n", CMDINFO(DONE_SC));
- #endif
- }
- }
- if(DONE_SC && DONE_SC->scsi_done) {
- #if defined(AHA152X_DEBUG)
- int hostno=DONE_SC->device->host->host_no;
- int id=DONE_SC->device->id & 0xf;
- int lun=DONE_SC->device->lun & 0x7;
- #endif
- Scsi_Cmnd *ptr = DONE_SC;
- DONE_SC=NULL;
- /* turn led off, when no commands are in the driver */
- HOSTDATA(shpnt)->commands--;
- if (!HOSTDATA(shpnt)->commands)
- SETPORT(PORTA, 0); /* turn led off */
- if(ptr->scsi_done != reset_done) {
- kfree(ptr->host_scribble);
- ptr->host_scribble=NULL;
- }
- DO_UNLOCK(flags);
- DPRINTK(debug_done, DEBUG_LEAD "calling scsi_done(%p)\n", hostno, id, lun, ptr);
- ptr->scsi_done(ptr);
- DPRINTK(debug_done, DEBUG_LEAD "scsi_done(%p) returned\n", hostno, id, lun, ptr);
- DO_LOCK(flags);
- }
- DONE_SC=NULL;
- #if defined(AHA152X_STAT)
- } else {
- HOSTDATA(shpnt)->busfree_without_done_command++;
- #endif
- }
- if(ISSUE_SC)
- CURRENT_SC = remove_first_SC(&ISSUE_SC);
- DO_UNLOCK(flags);
- if(CURRENT_SC) {
- #if defined(AHA152X_STAT)
- action++;
- #endif
- CURRENT_SC->SCp.phase |= selecting;
- DPRINTK(debug_selection, DEBUG_LEAD "selecting target\n", CMDINFO(CURRENT_SC));
- /* clear selection timeout */
- SETPORT(SSTAT1, SELTO);
- SETPORT(SCSIID, (shpnt->this_id << OID_) | CURRENT_SC->device->id);
- SETPORT(SXFRCTL1, (PARITY ? ENSPCHK : 0 ) | ENSTIMER);
- SETPORT(SCSISEQ, ENSELO | ENAUTOATNO | (DISCONNECTED_SC ? ENRESELI : 0));
- } else {
- #if defined(AHA152X_STAT)
- HOSTDATA(shpnt)->busfree_without_new_command++;
- #endif
- SETPORT(SCSISEQ, DISCONNECTED_SC ? ENRESELI : 0);
- }
- #if defined(AHA152X_STAT)
- if(!action)
- HOSTDATA(shpnt)->busfree_without_any_action++;
- #endif
- }
- /*
- * Selection done (OUT)
- * - queue IDENTIFY message and SDTR to selected target for message out
- * (ATN asserted automagically via ENAUTOATNO in busfree())
- */
- static void seldo_run(struct Scsi_Host *shpnt)
- {
- SETPORT(SCSISIG, 0);
- SETPORT(SSTAT1, CLRBUSFREE);
- SETPORT(SSTAT1, CLRPHASECHG);
- CURRENT_SC->SCp.phase &= ~(selecting|not_issued);
- SETPORT(SCSISEQ, 0);
- if (TESTLO(SSTAT0, SELDO)) {
- printk(ERR_LEAD "aha152x: passing bus free condition\n", CMDINFO(CURRENT_SC));
- done(shpnt, DID_NO_CONNECT << 16);
- return;
- }
- SETPORT(SSTAT0, CLRSELDO);
-
- ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun));
- if (CURRENT_SC->SCp.phase & aborting) {
- ADDMSGO(ABORT);
- } else if (CURRENT_SC->SCp.phase & resetting) {
- ADDMSGO(BUS_DEVICE_RESET);
- } else if (SYNCNEG==0 && SYNCHRONOUS) {
- CURRENT_SC->SCp.phase |= syncneg;
- MSGOLEN += spi_populate_sync_msg(&MSGO(MSGOLEN), 50, 8);
- SYNCNEG=1; /* negotiation in progress */
- }
- SETRATE(SYNCRATE);
- }
- /*
- * Selection timeout
- * - return command to mid-level with failure cause
- *
- */
- static void selto_run(struct Scsi_Host *shpnt)
- {
- SETPORT(SCSISEQ, 0);
- SETPORT(SSTAT1, CLRSELTIMO);
- DPRINTK(debug_selection, DEBUG_LEAD "selection timeout\n", CMDINFO(CURRENT_SC));
- if(!CURRENT_SC) {
- DPRINTK(debug_selection, DEBUG_LEAD "!CURRENT_SC\n", CMDINFO(CURRENT_SC));
- return;
- }
- CURRENT_SC->SCp.phase &= ~selecting;
- if (CURRENT_SC->SCp.phase & aborted) {
- DPRINTK(debug_selection, DEBUG_LEAD "aborted\n", CMDINFO(CURRENT_SC));
- done(shpnt, DID_ABORT << 16);
- } else if (TESTLO(SSTAT0, SELINGO)) {
- DPRINTK(debug_selection, DEBUG_LEAD "arbitration not won\n", CMDINFO(CURRENT_SC));
- done(shpnt, DID_BUS_BUSY << 16);
- } else {
- /* ARBITRATION won, but SELECTION failed */
- DPRINTK(debug_selection, DEBUG_LEAD "selection failed\n", CMDINFO(CURRENT_SC));
- done(shpnt, DID_NO_CONNECT << 16);
- }
- }
- /*
- * Selection in done
- * - put current command back to issue queue
- * (reconnection of a disconnected nexus instead
- * of successful selection out)
- *
- */
- static void seldi_run(struct Scsi_Host *shpnt)
- {
- int selid;
- int target;
- unsigned long flags;
- SETPORT(SCSISIG, 0);
- SETPORT(SSTAT0, CLRSELDI);
- SETPORT(SSTAT1, CLRBUSFREE);
- SETPORT(SSTAT1, CLRPHASECHG);
- if(CURRENT_SC) {
- if(!(CURRENT_SC->SCp.phase & not_issued))
- printk(ERR_LEAD "command should not have been issued yet\n", CMDINFO(CURRENT_SC));
- DPRINTK(debug_selection, ERR_LEAD "command requeued - reselection\n", CMDINFO(CURRENT_SC));
- DO_LOCK(flags);
- append_SC(&ISSUE_SC, CURRENT_SC);
- DO_UNLOCK(flags);
- CURRENT_SC = NULL;
- }
- if(!DISCONNECTED_SC) {
- DPRINTK(debug_selection, DEBUG_LEAD "unexpected SELDI ", CMDINFO(CURRENT_SC));
- return;
- }
- RECONN_TARGET=-1;
- selid = GETPORT(SELID) & ~(1 << shpnt->this_id);
- if (selid==0) {
- printk("aha152x%d: target id unknown (%02x)\n", HOSTNO, selid);
- return;
- }
- for(target=7; !(selid & (1 << target)); target--)
- ;
- if(selid & ~(1 << target)) {
- printk("aha152x%d: multiple targets reconnected (%02x)\n",
- HOSTNO, selid);
- }
- SETPORT(SCSIID, (shpnt->this_id << OID_) | target);
- SETPORT(SCSISEQ, 0);
- SETRATE(HOSTDATA(shpnt)->syncrate[target]);
- RECONN_TARGET=target;
- DPRINTK(debug_selection, DEBUG_LEAD "target %d reselected (%02x).\n", CMDINFO(CURRENT_SC), target, selid);
- }
- /*
- * message in phase
- * - handle initial message after reconnection to identify
- * reconnecting nexus
- * - queue command on DISCONNECTED_SC on DISCONNECT message
- * - set completed flag on COMMAND COMPLETE
- * (other completition code moved to busfree_run)
- * - handle response to SDTR
- * - clear synchronous transfer agreements on BUS RESET
- *
- * FIXME: what about SAVE POINTERS, RESTORE POINTERS?
- *
- */
- static void msgi_run(struct Scsi_Host *shpnt)
- {
- for(;;) {
- int sstat1 = GETPORT(SSTAT1);
- if(sstat1 & (PHASECHG|PHASEMIS|BUSFREE) || !(sstat1 & REQINIT))
- return;
- if(TESTLO(SSTAT0,SPIORDY)) {
- DPRINTK(debug_msgi, DEBUG_LEAD "!SPIORDY\n", CMDINFO(CURRENT_SC));
- return;
- }
- ADDMSGI(GETPORT(SCSIDAT));
- #if defined(AHA152X_DEBUG)
- if (HOSTDATA(shpnt)->debug & debug_msgi) {
- printk(INFO_LEAD "inbound message %02x ", CMDINFO(CURRENT_SC), MSGI(0));
- spi_print_msg(&MSGI(0));
- printk("\n");
- }
- #endif
- if(!CURRENT_SC) {
- if(LASTSTATE!=seldi) {
- printk(KERN_ERR "aha152x%d: message in w/o current command not after reselection\n", HOSTNO);
- }
- /*
- * Handle reselection
- */
- if(!(MSGI(0) & IDENTIFY_BASE)) {
- printk(KERN_ERR "aha152x%d: target didn't identify after reselection\n", HOSTNO);
- continue;
- }
- CURRENT_SC = remove_lun_SC(&DISCONNECTED_SC, RECONN_TARGET, MSGI(0) & 0x3f);
- if (!CURRENT_SC) {
- show_queues(shpnt);
- printk(KERN_ERR "aha152x%d: no disconnected command for target %d/%d\n", HOSTNO, RECONN_TARGET, MSGI(0) & 0x3f);
- continue;
- }
- DPRINTK(debug_msgi, DEBUG_LEAD "target reconnected\n", CMDINFO(CURRENT_SC));
- CURRENT_SC->SCp.Message = MSGI(0);
- CURRENT_SC->SCp.phase &= ~disconnected;
- MSGILEN=0;
- /* next message if any */
- continue;
- }
- CURRENT_SC->SCp.Message = MSGI(0);
- switch (MSGI(0)) {
- case DISCONNECT:
- if (!RECONNECT)
- printk(WARN_LEAD "target was not allowed to disconnect\n", CMDINFO(CURRENT_SC));
- CURRENT_SC->SCp.phase |= disconnected;
- break;
- case COMMAND_COMPLETE:
- if(CURRENT_SC->SCp.phase & completed)
- DPRINTK(debug_msgi, DEBUG_LEAD "again COMMAND COMPLETE\n", CMDINFO(CURRENT_SC));
- CURRENT_SC->SCp.phase |= completed;
- break;
- case MESSAGE_REJECT:
- if…