| /* 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(0x1505), 0 }, |
| { ISAPNP_ANY_ID, ISAPNP_ANY_ID, |
| ISAPNP_VENDOR('A','D','P'), ISAPNP_FUNCTION(0x1530), 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 (SYNCNEG==1) { |
| printk(INFO_LEAD "Synchronous Data Transfer Request was rejected\n", CMDINFO(CURRENT_SC)); |
| SYNCNEG=2; /* negotiation completed */ |
| } else |
| printk(INFO_LEAD "inbound message (MESSAGE REJECT)\n", CMDINFO(CURRENT_SC)); |
| break; |
| |
| case SAVE_POINTERS: |
| break; |
| |
| case RESTORE_POINTERS: |
| break; |
| |
| case EXTENDED_MESSAGE: |
| if(MSGILEN<2 || MSGILEN<MSGI(1)+2) { |
| /* not yet completed */ |
| continue; |
| } |
| |
| switch (MSGI(2)) { |
| case EXTENDED_SDTR: |
| { |
| long ticks; |
| |
| if (MSGI(1) != 3) { |
| printk(ERR_LEAD "SDTR message length!=3\n", CMDINFO(CURRENT_SC)); |
| break; |
| } |
| |
| if (!HOSTDATA(shpnt)->synchronous) |
| break; |
| |
| printk(INFO_LEAD, CMDINFO(CURRENT_SC)); |
| spi_print_msg(&MSGI(0)); |
| printk("\n"); |
| |
| ticks = (MSGI(3) * 4 + 49) / 50; |
| |
| if (syncneg) { |
| /* negotiation in progress */ |
| if (ticks > 9 || MSGI(4) < 1 || MSGI(4) > 8) { |
| ADDMSGO(MESSAGE_REJECT); |
| printk(INFO_LEAD "received Synchronous Data Transfer Request invalid - rejected\n", CMDINFO(CURRENT_SC)); |
| break; |
| } |
| |
| SYNCRATE |= ((ticks - 2) << 4) + MSGI(4); |
| } else if (ticks <= 9 && MSGI(4) >= 1) { |
| ADDMSGO(EXTENDED_MESSAGE); |
| ADDMSGO(3); |
| ADDMSGO(EXTENDED_SDTR); |
| if (ticks < 4) { |
| ticks = 4; |
| ADDMSGO(50); |
| } else |
| ADDMSGO(MSGI(3)); |
| |
| if (MSGI(4) > 8) |
| MSGI(4) = 8; |
| |
| ADDMSGO(MSGI(4)); |
| |
| SYNCRATE |= ((ticks - 2) << 4) + MSGI(4); |
| } else { |
| /* requested SDTR is too slow, do it asynchronously */ |
| printk(INFO_LEAD "Synchronous Data Transfer Request too slow - Rejecting\n", CMDINFO(CURRENT_SC)); |
| ADDMSGO(MESSAGE_REJECT); |
| } |
| |
| SYNCNEG=2; /* negotiation completed */ |
| SETRATE(SYNCRATE); |
| } |
| break; |
| |
| case BUS_DEVICE_RESET: |
| { |
| int i; |
| |
| for(i=0; i<8; i++) { |
| HOSTDATA(shpnt)->syncrate[i]=0; |
| HOSTDATA(shpnt)->syncneg[i]=0; |
| } |
| |
| } |
| break; |
| |
| case EXTENDED_MODIFY_DATA_POINTER: |
| case EXTENDED_EXTENDED_IDENTIFY: |
| case EXTENDED_WDTR: |
| default: |
| ADDMSGO(MESSAGE_REJECT); |
| break; |
| } |
| break; |
| } |
| |
| MSGILEN=0; |
| } |
| } |
| |
| static void msgi_end(struct Scsi_Host *shpnt) |
| { |
| if(MSGILEN>0) |
| printk(WARN_LEAD "target left before message completed (%d)\n", CMDINFO(CURRENT_SC), MSGILEN); |
| |
| if (MSGOLEN > 0 && !(GETPORT(SSTAT1) & BUSFREE)) { |
| DPRINTK(debug_msgi, DEBUG_LEAD "msgo pending\n", CMDINFO(CURRENT_SC)); |
| SETPORT(SCSISIG, P_MSGI | SIG_ATNO); |
| } |
| } |
| |
| /* |
| * message out phase |
| * |
| */ |
| static void msgo_init(struct Scsi_Host *shpnt) |
| { |
| if(MSGOLEN==0) { |
| if((CURRENT_SC->SCp.phase & syncneg) && SYNCNEG==2 && SYNCRATE==0) { |
| ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun)); |
| } else { |
| printk(INFO_LEAD "unexpected MESSAGE OUT phase; rejecting\n", CMDINFO(CURRENT_SC)); |
| ADDMSGO(MESSAGE_REJECT); |
| } |
| } |
| |
| #if defined(AHA152X_DEBUG) |
| if(HOSTDATA(shpnt)->debug & debug_msgo) { |
| int i; |
| |
| printk(DEBUG_LEAD "messages( ", CMDINFO(CURRENT_SC)); |
| for (i=0; i<MSGOLEN; i+=spi_print_msg(&MSGO(i)), printk(" ")) |
| ; |
| printk(")\n"); |
| } |
| #endif |
| } |
| |
| /* |
| * message out phase |
| * |
| */ |
| static void msgo_run(struct Scsi_Host *shpnt) |
| { |
| if(MSGO_I==MSGOLEN) |
| DPRINTK(debug_msgo, DEBUG_LEAD "messages all sent (%d/%d)\n", CMDINFO(CURRENT_SC), MSGO_I, MSGOLEN); |
| |
| while(MSGO_I<MSGOLEN) { |
| DPRINTK(debug_msgo, DEBUG_LEAD "message byte %02x (%d/%d)\n", CMDINFO(CURRENT_SC), MSGO(MSGO_I), MSGO_I, MSGOLEN); |
| |
| if(TESTLO(SSTAT0, SPIORDY)) { |
| DPRINTK(debug_msgo, DEBUG_LEAD "!SPIORDY\n", CMDINFO(CURRENT_SC)); |
| return; |
| } |
| |
| if (MSGO_I==MSGOLEN-1) { |
| /* Leave MESSAGE OUT after transfer */ |
| SETPORT(SSTAT1, CLRATNO); |
| } |
| |
| |
| if (MSGO(MSGO_I) & IDENTIFY_BASE) |
| CURRENT_SC->SCp.phase |= identified; |
| |
| if (MSGO(MSGO_I)==ABORT) |
| CURRENT_SC->SCp.phase |= aborted; |
| |
| if (MSGO(MSGO_I)==BUS_DEVICE_RESET) |
| CURRENT_SC->SCp.phase |= resetted; |
| |
| SETPORT(SCSIDAT, MSGO(MSGO_I++)); |
| } |
| } |
| |
| static void msgo_end(struct Scsi_Host *shpnt) |
| { |
| if(MSGO_I<MSGOLEN) { |
| printk(ERR_LEAD "message sent incompletely (%d/%d)\n", CMDINFO(CURRENT_SC), MSGO_I, MSGOLEN); |
| if(SYNCNEG==1) { |
| printk(INFO_LEAD "Synchronous Data Transfer Request was rejected\n", CMDINFO(CURRENT_SC)); |
| SYNCNEG=2; |
| } |
| } |
| |
| MSGO_I = 0; |
| MSGOLEN = 0; |
| } |
| |
| /* |
| * command phase |
| * |
| */ |
| static void cmd_init(struct Scsi_Host *shpnt) |
| { |
| if (CURRENT_SC->SCp.sent_command) { |
| printk(ERR_LEAD "command already sent\n", CMDINFO(CURRENT_SC)); |
| done(shpnt, DID_ERROR << 16); |
| return; |
| } |
| |
| #if defined(AHA152X_DEBUG) |
| if (HOSTDATA(shpnt)->debug & debug_cmd) { |
| printk(DEBUG_LEAD "cmd_init: ", CMDINFO(CURRENT_SC)); |
| __scsi_print_command(CURRENT_SC->cmnd); |
| } |
| #endif |
| |
| CMD_I=0; |
| } |
| |
| /* |
| * command phase |
| * |
| */ |
| static void cmd_run(struct Scsi_Host *shpnt) |
| { |
| if(CMD_I==CURRENT_SC->cmd_len) { |
| DPRINTK(debug_cmd, DEBUG_LEAD "command already completely sent (%d/%d)", CMDINFO(CURRENT_SC), CMD_I, CURRENT_SC->cmd_len); |
| disp_ports(shpnt); |
| } |
| |
| while(CMD_I<CURRENT_SC->cmd_len) { |
| DPRINTK(debug_cmd, DEBUG_LEAD "command byte %02x (%d/%d)\n", CMDINFO(CURRENT_SC), CURRENT_SC->cmnd[CMD_I], CMD_I, CURRENT_SC->cmd_len); |
| |
| if(TESTLO(SSTAT0, SPIORDY)) { |
| DPRINTK(debug_cmd, DEBUG_LEAD "!SPIORDY\n", CMDINFO(CURRENT_SC)); |
| return; |
| } |
| |
| SETPORT(SCSIDAT, CURRENT_SC->cmnd[CMD_I++]); |
| } |
| } |
| |
| static void cmd_end(struct Scsi_Host *shpnt) |
| { |
| if(CMD_I<CURRENT_SC->cmd_len) |
| printk(ERR_LEAD "command sent incompletely (%d/%d)\n", CMDINFO(CURRENT_SC), CMD_I, CURRENT_SC->cmd_len); |
| else |
| CURRENT_SC->SCp.sent_command++; |
| } |
| |
| /* |
| * status phase |
| * |
| */ |
| static void status_run(struct Scsi_Host *shpnt) |
| { |
| if(TESTLO(SSTAT0,SPIORDY)) { |
| DPRINTK(debug_status, DEBUG_LEAD "!SPIORDY\n", CMDINFO(CURRENT_SC)); |
| return; |
| } |
| |
| CURRENT_SC->SCp.Status = GETPORT(SCSIDAT); |
| |
| #if defined(AHA152X_DEBUG) |
| if (HOSTDATA(shpnt)->debug & debug_status) { |
| printk(DEBUG_LEAD "inbound status %02x ", CMDINFO(CURRENT_SC), CURRENT_SC->SCp.Status); |
| scsi_print_status(CURRENT_SC->SCp.Status); |
| printk("\n"); |
| } |
| #endif |
| } |
| |
| /* |
| * data in phase |
| * |
| */ |
| static void datai_init(struct Scsi_Host *shpnt) |
| { |
| SETPORT(DMACNTRL0, RSTFIFO); |
| SETPORT(DMACNTRL0, RSTFIFO|ENDMA); |
| |
| SETPORT(SXFRCTL0, CH1|CLRSTCNT); |
| SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN); |
| |
| SETPORT(SIMODE0, 0); |
| SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE); |
| |
| DATA_LEN=0; |
| DPRINTK(debug_datai, |
| DEBUG_LEAD "datai_init: request_bufflen=%d resid=%d\n", |
| CMDINFO(CURRENT_SC), scsi_bufflen(CURRENT_SC), |
| scsi_get_resid(CURRENT_SC)); |
| } |
| |
| static void datai_run(struct Scsi_Host *shpnt) |
| { |
| unsigned long the_time; |
| int fifodata, data_count; |
| |
| /* |
| * loop while the phase persists or the fifos are not empty |
| * |
| */ |
| while(TESTLO(DMASTAT, INTSTAT) || TESTLO(DMASTAT, DFIFOEMP) || TESTLO(SSTAT2, SEMPTY)) { |
| /* FIXME: maybe this should be done by setting up |
| * STCNT to trigger ENSWRAP interrupt, instead of |
| * polling for DFIFOFULL |
| */ |
| the_time=jiffies + 100*HZ; |
| while(TESTLO(DMASTAT, DFIFOFULL|INTSTAT) && time_before(jiffies,the_time)) |
| barrier(); |
| |
| if(TESTLO(DMASTAT, DFIFOFULL|INTSTAT)) { |
| printk(ERR_LEAD "datai timeout", CMDINFO(CURRENT_SC)); |
| disp_ports(shpnt); |
| break; |
| } |
| |
| if(TESTHI(DMASTAT, DFIFOFULL)) { |
| fifodata = 128; |
| } else { |
| the_time=jiffies + 100*HZ; |
| while(TESTLO(SSTAT2, SEMPTY) && time_before(jiffies,the_time)) |
| barrier(); |
| |
| if(TESTLO(SSTAT2, SEMPTY)) { |
| printk(ERR_LEAD "datai sempty timeout", CMDINFO(CURRENT_SC)); |
| disp_ports(shpnt); |
| break; |
| } |
| |
| fifodata = GETPORT(FIFOSTAT); |
| } |
| |
| if(CURRENT_SC->SCp.this_residual>0) { |
| while(fifodata>0 && CURRENT_SC->SCp.this_residual>0) { |
| data_count = fifodata>CURRENT_SC->SCp.this_residual ? |
| CURRENT_SC->SCp.this_residual : |
| fifodata; |
| fifodata -= data_count; |
| |
| if(data_count & 1) { |
| DPRINTK(debug_datai, DEBUG_LEAD "8bit\n", CMDINFO(CURRENT_SC)); |
| SETPORT(DMACNTRL0, ENDMA|_8BIT); |
| *CURRENT_SC->SCp.ptr++ = GETPORT(DATAPORT); |
| CURRENT_SC->SCp.this_residual--; |
| DATA_LEN++; |
| SETPORT(DMACNTRL0, ENDMA); |
| } |
| |
| if(data_count > 1) { |
| DPRINTK(debug_datai, DEBUG_LEAD "16bit(%d)\n", CMDINFO(CURRENT_SC), data_count); |
| data_count >>= 1; |
| insw(DATAPORT, CURRENT_SC->SCp.ptr, data_count); |
| CURRENT_SC->SCp.ptr += 2 * data_count; |
| CURRENT_SC->SCp.this_residual -= 2 * data_count; |
| DATA_LEN += 2 * data_count; |
| } |
| |
| if(CURRENT_SC->SCp.this_residual==0 && CURRENT_SC->SCp.buffers_residual>0) { |
| /* advance to next buffer */ |
| CURRENT_SC->SCp.buffers_residual--; |
| CURRENT_SC->SCp.buffer++; |
| CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer); |
| CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length; |
| } |
| } |
| } else if(fifodata>0) { |
| printk(ERR_LEAD "no buffers left for %d(%d) bytes (data overrun!?)\n", CMDINFO(CURRENT_SC), fifodata, GETPORT(FIFOSTAT)); |
| SETPORT(DMACNTRL0, ENDMA|_8BIT); |
| while(fifodata>0) { |
| int data; |
| data=GETPORT(DATAPORT); |
| DPRINTK(debug_datai, DEBUG_LEAD "data=%02x\n", CMDINFO(CURRENT_SC), data); |
| fifodata--; |
| DATA_LEN++; |
| } |
| SETPORT(DMACNTRL0, ENDMA|_8BIT); |
| } |
| } |
| |
| if(TESTLO(DMASTAT, INTSTAT) || |
| TESTLO(DMASTAT, DFIFOEMP) || |
| TESTLO(SSTAT2, SEMPTY) || |
| GETPORT(FIFOSTAT)>0) { |
| /* |
| * something went wrong, if there's something left in the fifos |
| * or the phase didn't change |
| */ |
| printk(ERR_LEAD "fifos should be empty and phase should have changed\n", CMDINFO(CURRENT_SC)); |
| disp_ports(shpnt); |
| } |
| |
| if(DATA_LEN!=GETSTCNT()) { |
| printk(ERR_LEAD |
| "manual transfer count differs from automatic (count=%d;stcnt=%d;diff=%d;fifostat=%d)", |
| CMDINFO(CURRENT_SC), DATA_LEN, GETSTCNT(), GETSTCNT()-DATA_LEN, GETPORT(FIFOSTAT)); |
| disp_ports(shpnt); |
| mdelay(10000); |
| } |
| } |
| |
| static void datai_end(struct Scsi_Host *shpnt) |
| { |
| CMD_INC_RESID(CURRENT_SC, -GETSTCNT()); |
| |
| DPRINTK(debug_datai, |
| DEBUG_LEAD "datai_end: request_bufflen=%d resid=%d stcnt=%d\n", |
| CMDINFO(CURRENT_SC), scsi_bufflen(CURRENT_SC), |
| scsi_get_resid(CURRENT_SC), GETSTCNT()); |
| |
| SETPORT(SXFRCTL0, CH1|CLRSTCNT); |
| SETPORT(DMACNTRL0, 0); |
| } |
| |
| /* |
| * data out phase |
| * |
| */ |
| static void datao_init(struct Scsi_Host *shpnt) |
| { |
| SETPORT(DMACNTRL0, WRITE_READ | RSTFIFO); |
| SETPORT(DMACNTRL0, WRITE_READ | ENDMA); |
| |
| SETPORT(SXFRCTL0, CH1|CLRSTCNT); |
| SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN); |
| |
| SETPORT(SIMODE0, 0); |
| SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE ); |
| |
| DATA_LEN = scsi_get_resid(CURRENT_SC); |
| |
| DPRINTK(debug_datao, |
| DEBUG_LEAD "datao_init: request_bufflen=%d; resid=%d\n", |
| CMDINFO(CURRENT_SC), scsi_bufflen(CURRENT_SC), |
| scsi_get_resid(CURRENT_SC)); |
| } |
| |
| static void datao_run(struct Scsi_Host *shpnt) |
| { |
| unsigned long the_time; |
| int data_count; |
| |
| /* until phase changes or all data sent */ |
| while(TESTLO(DMASTAT, INTSTAT) && CURRENT_SC->SCp.this_residual>0) { |
| data_count = 128; |
| if(data_count > CURRENT_SC->SCp.this_residual) |
| data_count=CURRENT_SC->SCp.this_residual; |
| |
| if(TESTLO(DMASTAT, DFIFOEMP)) { |
| printk(ERR_LEAD "datao fifo not empty (%d)", CMDINFO(CURRENT_SC), GETPORT(FIFOSTAT)); |
| disp_ports(shpnt); |
| break; |
| } |
| |
| if(data_count & 1) { |
| SETPORT(DMACNTRL0,WRITE_READ|ENDMA|_8BIT); |
| SETPORT(DATAPORT, *CURRENT_SC->SCp.ptr++); |
| CURRENT_SC->SCp.this_residual--; |
| CMD_INC_RESID(CURRENT_SC, -1); |
| SETPORT(DMACNTRL0,WRITE_READ|ENDMA); |
| } |
| |
| if(data_count > 1) { |
| data_count >>= 1; |
| outsw(DATAPORT, CURRENT_SC->SCp.ptr, data_count); |
| CURRENT_SC->SCp.ptr += 2 * data_count; |
| CURRENT_SC->SCp.this_residual -= 2 * data_count; |
| CMD_INC_RESID(CURRENT_SC, -2 * data_count); |
| } |
| |
| if(CURRENT_SC->SCp.this_residual==0 && CURRENT_SC->SCp.buffers_residual>0) { |
| /* advance to next buffer */ |
| CURRENT_SC->SCp.buffers_residual--; |
| CURRENT_SC->SCp.buffer++; |
| CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer); |
| CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length; |
| } |
| |
| the_time=jiffies + 100*HZ; |
| while(TESTLO(DMASTAT, DFIFOEMP|INTSTAT) && time_before(jiffies,the_time)) |
| barrier(); |
| |
| if(TESTLO(DMASTAT, DFIFOEMP|INTSTAT)) { |
| printk(ERR_LEAD "dataout timeout", CMDINFO(CURRENT_SC)); |
| disp_ports(shpnt); |
| break; |
| } |
| } |
| } |
| |
| static void datao_end(struct Scsi_Host *shpnt) |
| { |
| if(TESTLO(DMASTAT, DFIFOEMP)) { |
| int data_count = (DATA_LEN - scsi_get_resid(CURRENT_SC)) - |
| GETSTCNT(); |
| |
| DPRINTK(debug_datao, DEBUG_LEAD "datao: %d bytes to resend (%d written, %d transferred)\n", |
| CMDINFO(CURRENT_SC), |
| data_count, |
| DATA_LEN - scsi_get_resid(CURRENT_SC), |
| GETSTCNT()); |
| |
| CMD_INC_RESID(CURRENT_SC, data_count); |
| |
| data_count -= CURRENT_SC->SCp.ptr - |
| SG_ADDRESS(CURRENT_SC->SCp.buffer); |
| while(data_count>0) { |
| CURRENT_SC->SCp.buffer--; |
| CURRENT_SC->SCp.buffers_residual++; |
| data_count -= CURRENT_SC->SCp.buffer->length; |
| } |
| CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer) - |
| data_count; |
| CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length + |
| data_count; |
| } |
| |
| DPRINTK(debug_datao, DEBUG_LEAD "datao_end: request_bufflen=%d; resid=%d; stcnt=%d\n", |
| CMDINFO(CURRENT_SC), |
| scsi_bufflen(CURRENT_SC), |
| scsi_get_resid(CURRENT_SC), |
| GETSTCNT()); |
| |
| SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT); |
| SETPORT(SXFRCTL0, CH1); |
| |
| SETPORT(DMACNTRL0, 0); |
| } |
| |
| /* |
| * figure out what state we're in |
| * |
| */ |
| static int update_state(struct Scsi_Host *shpnt) |
| { |
| int dataphase=0; |
| unsigned int stat0 = GETPORT(SSTAT0); |
| unsigned int stat1 = GETPORT(SSTAT1); |
| |
| PREVSTATE = STATE; |
| STATE=unknown; |
| |
| if(stat1 & SCSIRSTI) { |
| STATE=rsti; |
| SETPORT(SCSISEQ,0); |
| SETPORT(SSTAT1,SCSIRSTI); |
| } else if(stat0 & SELDI && PREVSTATE==busfree) { |
| STATE=seldi; |
| } else if(stat0 & SELDO && CURRENT_SC && (CURRENT_SC->SCp.phase & selecting)) { |
| STATE=seldo; |
| } else if(stat1 & SELTO) { |
| STATE=selto; |
| } else if(stat1 & BUSFREE) { |
| STATE=busfree; |
| SETPORT(SSTAT1,BUSFREE); |
| } else if(stat1 & SCSIPERR) { |
| STATE=parerr; |
| SETPORT(SSTAT1,SCSIPERR); |
| } else if(stat1 & REQINIT) { |
| switch(GETPORT(SCSISIG) & P_MASK) { |
| case P_MSGI: STATE=msgi; break; |
| case P_MSGO: STATE=msgo; break; |
| case P_DATAO: STATE=datao; break; |
| case P_DATAI: STATE=datai; break; |
| case P_STATUS: STATE=status; break; |
| case P_CMD: STATE=cmd; break; |
| } |
| dataphase=1; |
| } |
| |
| if((stat0 & SELDI) && STATE!=seldi && !dataphase) { |
| printk(INFO_LEAD "reselection missed?", CMDINFO(CURRENT_SC)); |
| disp_ports(shpnt); |
| } |
| |
| if(STATE!=PREVSTATE) { |
| LASTSTATE=PREVSTATE; |
| } |
| |
| return dataphase; |
| } |
| |
| /* |
| * handle parity error |
| * |
| * FIXME: in which phase? |
| * |
| */ |
| static void parerr_run(struct Scsi_Host *shpnt) |
| { |
| printk(ERR_LEAD "parity error\n", CMDINFO(CURRENT_SC)); |
| done(shpnt, DID_PARITY << 16); |
| } |
| |
| /* |
| * handle reset in |
| * |
| */ |
| static void rsti_run(struct Scsi_Host *shpnt) |
| { |
| Scsi_Cmnd *ptr; |
| |
| printk(KERN_NOTICE "aha152x%d: scsi reset in\n", HOSTNO); |
| |
| ptr=DISCONNECTED_SC; |
| while(ptr) { |
| Scsi_Cmnd *next = SCNEXT(ptr); |
| |
| if (!ptr->device->soft_reset) { |
| remove_SC(&DISCONNECTED_SC, ptr); |
| |
| kfree(ptr->host_scribble); |
| ptr->host_scribble=NULL; |
| |
| ptr->result = DID_RESET << 16; |
| ptr->scsi_done(ptr); |
| } |
| |
| ptr = next; |
| } |
| |
| if(CURRENT_SC && !CURRENT_SC->device->soft_reset) |
| done(shpnt, DID_RESET << 16 ); |
| } |
| |
| |
| /* |
| * bottom-half handler |
| * |
| */ |
| static void is_complete(struct Scsi_Host *shpnt) |
| { |
| int dataphase; |
| unsigned long flags; |
| int pending; |
| |
| if(!shpnt) |
| return; |
| |
| DO_LOCK(flags); |
| |
| if( HOSTDATA(shpnt)->service==0 ) { |
| DO_UNLOCK(flags); |
| return; |
| } |
| |
| HOSTDATA(shpnt)->service = 0; |
| |
| if(HOSTDATA(shpnt)->in_intr) { |
| DO_UNLOCK(flags); |
| /* aha152x_error never returns.. */ |
| aha152x_error(shpnt, "bottom-half already running!?"); |
| } |
| HOSTDATA(shpnt)->in_intr++; |
| |
| /* |
| * loop while there are interrupt conditions pending |
| * |
| */ |
| do { |
| unsigned long start = jiffies; |
| DO_UNLOCK(flags); |
| |
| dataphase=update_state(shpnt); |
| |
| DPRINTK(debug_phases, LEAD "start %s %s(%s)\n", CMDINFO(CURRENT_SC), states[STATE].name, states[PREVSTATE].name, states[LASTSTATE].name); |
| |
| /* |
| * end previous state |
| * |
| */ |
| if(PREVSTATE!=STATE && states[PREVSTATE].end) |
| states[PREVSTATE].end(shpnt); |
| |
| /* |
| * disable SPIO mode if previous phase used it |
| * and this one doesn't |
| * |
| */ |
| if(states[PREVSTATE].spio && !states[STATE].spio) { |
| SETPORT(SXFRCTL0, CH1); |
| SETPORT(DMACNTRL0, 0); |
| if(CURRENT_SC) |
| CURRENT_SC->SCp.phase &= ~spiordy; |
| } |
| |
| /* |
| * accept current dataphase phase |
| * |
| */ |
| if(dataphase) { |
| SETPORT(SSTAT0, REQINIT); |
| SETPORT(SCSISIG, GETPORT(SCSISIG) & P_MASK); |
| SETPORT(SSTAT1, PHASECHG); |
| } |
| |
| /* |
| * enable SPIO mode if previous didn't use it |
| * and this one does |
| * |
| */ |
| if(!states[PREVSTATE].spio && states[STATE].spio) { |
| SETPORT(DMACNTRL0, 0); |
| SETPORT(SXFRCTL0, CH1|SPIOEN); |
| if(CURRENT_SC) |
| CURRENT_SC->SCp.phase |= spiordy; |
| } |
| |
| /* |
| * initialize for new state |
| * |
| */ |
| if(PREVSTATE!=STATE && states[STATE].init) |
| states[STATE].init(shpnt); |
| |
| /* |
| * handle current state |
| * |
| */ |
| if(states[STATE].run) |
| states[STATE].run(shpnt); |
| else |
| printk(ERR_LEAD "unexpected state (%x)\n", CMDINFO(CURRENT_SC), STATE); |
| |
| /* |
| * setup controller to interrupt on |
| * the next expected condition and |
| * loop if it's already there |
| * |
| */ |
| DO_LOCK(flags); |
| pending=setup_expected_interrupts(shpnt); |
| #if defined(AHA152X_STAT) |
| HOSTDATA(shpnt)->count[STATE]++; |
| if(PREVSTATE!=STATE) |
| HOSTDATA(shpnt)->count_trans[STATE]++; |
| HOSTDATA(shpnt)->time[STATE] += jiffies-start; |
| #endif |
| |
| DPRINTK(debug_phases, LEAD "end %s %s(%s)\n", CMDINFO(CURRENT_SC), states[STATE].name, states[PREVSTATE].name, states[LASTSTATE].name); |
| } while(pending); |
| |
| /* |
| * enable interrupts and leave bottom-half |
| * |
| */ |
| HOSTDATA(shpnt)->in_intr--; |
| SETBITS(DMACNTRL0, INTEN); |
| DO_UNLOCK(flags); |
| } |
| |
| |
| /* |
| * Dump the current driver status and panic |
| */ |
| static void aha152x_error(struct Scsi_Host *shpnt, char *msg) |
| { |
| printk(KERN_EMERG "\naha152x%d: %s\n", HOSTNO, msg); |
| show_queues(shpnt); |
| panic("aha152x panic\n"); |
| } |
| |
| /* |
| * Display registers of AIC-6260 |
| */ |
| static void disp_ports(struct Scsi_Host *shpnt) |
| { |
| #if defined(AHA152X_DEBUG) |
| int s; |
| |
| printk("\n%s: %s(%s) ", |
| CURRENT_SC ? "busy" : "waiting", |
| states[STATE].name, |
| states[PREVSTATE].name); |
| |
| s = GETPORT(SCSISEQ); |
| printk("SCSISEQ( "); |
| if (s & TEMODEO) |
| printk("TARGET MODE "); |
| if (s & ENSELO) |
| printk("SELO "); |
| if (s & ENSELI) |
| printk("SELI "); |
| if (s & ENRESELI) |
| printk("RESELI "); |
| if (s & ENAUTOATNO) |
| printk("AUTOATNO "); |
| if (s & ENAUTOATNI) |
| printk("AUTOATNI "); |
| if (s & ENAUTOATNP) |
| printk("AUTOATNP "); |
| if (s & SCSIRSTO) |
| printk("SCSIRSTO "); |
| printk(");"); |
| |
| printk(" SCSISIG("); |
| s = GETPORT(SCSISIG); |
| switch (s & P_MASK) { |
| case P_DATAO: |
| printk("DATA OUT"); |
| break; |
| case P_DATAI: |
| printk("DATA IN"); |
| break; |
| case P_CMD: |
| printk("COMMAND"); |
| break; |
| case P_STATUS: |
| printk("STATUS"); |
| break; |
| case P_MSGO: |
| printk("MESSAGE OUT"); |
| break; |
| case P_MSGI: |
| printk("MESSAGE IN"); |
| break; |
| default: |
| printk("*invalid*"); |
| break; |
| } |
| |
| printk("); "); |
| |
| printk("INTSTAT (%s); ", TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo"); |
| |
| printk("SSTAT( "); |
| s = GETPORT(SSTAT0); |
| if (s & TARGET) |
| printk("TARGET "); |
| if (s & SELDO) |
| printk("SELDO "); |
| if (s & SELDI) |
| printk("SELDI "); |
| if (s & SELINGO) |
| printk("SELINGO "); |
| if (s & SWRAP) |
| printk("SWRAP "); |
| if (s & SDONE) |
| printk("SDONE "); |
| if (s & SPIORDY) |
| printk("SPIORDY "); |
| if (s & DMADONE) |
| printk("DMADONE "); |
| |
| s = GETPORT(SSTAT1); |
| if (s & SELTO) |
| printk("SELTO "); |
| if (s & ATNTARG) |
| printk("ATNTARG "); |
| if (s & SCSIRSTI) |
| printk("SCSIRSTI "); |
| if (s & PHASEMIS) |
| printk("PHASEMIS "); |
| if (s & BUSFREE) |
| printk("BUSFREE "); |
| if (s & SCSIPERR) |
| printk("SCSIPERR "); |
| if (s & PHASECHG) |
| printk("PHASECHG "); |
| if (s & REQINIT) |
| printk("REQINIT "); |
| printk("); "); |
| |
| |
| printk("SSTAT( "); |
| |
| s = GETPORT(SSTAT0) & GETPORT(SIMODE0); |
| |
| if (s & TARGET) |
| printk("TARGET "); |
| if (s & SELDO) |
| printk("SELDO "); |
| if (s & SELDI) |
| printk("SELDI "); |
| if (s & SELINGO) |
| printk("SELINGO "); |
| if (s & SWRAP) |
| printk("SWRAP "); |
| if (s & SDONE) |
| printk("SDONE "); |
| if (s & SPIORDY) |
| printk("SPIORDY "); |
| if (s & DMADONE) |
| printk("DMADONE "); |
| |
| s = GETPORT(SSTAT1) & GETPORT(SIMODE1); |
| |
| if (s & SELTO) |
| printk("SELTO "); |
| if (s & ATNTARG) |
| printk("ATNTARG "); |
| if (s & SCSIRSTI) |
| printk("SCSIRSTI "); |
| if (s & PHASEMIS) |
| printk("PHASEMIS "); |
| if (s & BUSFREE) |
| printk("BUSFREE "); |
| if (s & SCSIPERR) |
| printk("SCSIPERR "); |
| if (s & PHASECHG) |
| printk("PHASECHG "); |
| if (s & REQINIT) |
| printk("REQINIT "); |
| printk("); "); |
| |
| printk("SXFRCTL0( "); |
| |
| s = GETPORT(SXFRCTL0); |
| if (s & SCSIEN) |
| printk("SCSIEN "); |
| if (s & DMAEN) |
| printk("DMAEN "); |
| if (s & CH1) |
| printk("CH1 "); |
| if (s & CLRSTCNT) |
| printk("CLRSTCNT "); |
| if (s & SPIOEN) |
| printk("SPIOEN "); |
| if (s & CLRCH1) |
| printk("CLRCH1 "); |
| printk("); "); |
| |
| printk("SIGNAL( "); |
| |
| s = GETPORT(SCSISIG); |
| if (s & SIG_ATNI) |
| printk("ATNI "); |
| if (s & SIG_SELI) |
| printk("SELI "); |
| if (s & SIG_BSYI) |
| printk("BSYI "); |
| if (s & SIG_REQI) |
| printk("REQI "); |
| if (s & SIG_ACKI) |
| printk("ACKI "); |
| printk("); "); |
| |
| printk("SELID (%02x), ", GETPORT(SELID)); |
| |
| printk("STCNT (%d), ", GETSTCNT()); |
| |
| printk("SSTAT2( "); |
| |
| s = GETPORT(SSTAT2); |
| if (s & SOFFSET) |
| printk("SOFFSET "); |
| if (s & SEMPTY) |
| printk("SEMPTY "); |
| if (s & SFULL) |
| printk("SFULL "); |
| printk("); SFCNT (%d); ", s & (SFULL | SFCNT)); |
| |
| s = GETPORT(SSTAT3); |
| printk("SCSICNT (%d), OFFCNT(%d), ", (s & 0xf0) >> 4, s & 0x0f); |
| |
| printk("SSTAT4( "); |
| s = GETPORT(SSTAT4); |
| if (s & SYNCERR) |
| printk("SYNCERR "); |
| if (s & FWERR) |
| printk("FWERR "); |
| if (s & FRERR) |
| printk("FRERR "); |
| printk("); "); |
| |
| printk("DMACNTRL0( "); |
| s = GETPORT(DMACNTRL0); |
| printk("%s ", s & _8BIT ? "8BIT" : "16BIT"); |
| printk("%s ", s & DMA ? "DMA" : "PIO"); |
| printk("%s ", s & WRITE_READ ? "WRITE" : "READ"); |
| if (s & ENDMA) |
| printk("ENDMA "); |
| if (s & INTEN) |
| printk("INTEN "); |
| if (s & RSTFIFO) |
| printk("RSTFIFO "); |
| if (s & SWINT) |
| printk("SWINT "); |
| printk("); "); |
| |
| printk("DMASTAT( "); |
| s = GETPORT(DMASTAT); |
| if (s & ATDONE) |
| printk("ATDONE "); |
| if (s & WORDRDY) |
| printk("WORDRDY "); |
| if (s & DFIFOFULL) |
| printk("DFIFOFULL "); |
| if (s & DFIFOEMP) |
| printk("DFIFOEMP "); |
| printk(")\n"); |
| #endif |
| } |
| |
| /* |
| * display enabled interrupts |
| */ |
| static void disp_enintr(struct Scsi_Host *shpnt) |
| { |
| int s; |
| |
| printk(KERN_DEBUG "enabled interrupts ( "); |
| |
| s = GETPORT(SIMODE0); |
| if (s & ENSELDO) |
| printk("ENSELDO "); |
| if (s & ENSELDI) |
| printk("ENSELDI "); |
| if (s & ENSELINGO) |
| printk("ENSELINGO "); |
| if (s & ENSWRAP) |
| printk("ENSWRAP "); |
| if (s & ENSDONE) |
| printk("ENSDONE "); |
| if (s & ENSPIORDY) |
| printk("ENSPIORDY "); |
| if (s & ENDMADONE) |
| printk("ENDMADONE "); |
| |
| s = GETPORT(SIMODE1); |
| if (s & ENSELTIMO) |
| printk("ENSELTIMO "); |
| if (s & ENATNTARG) |
| printk("ENATNTARG "); |
| if (s & ENPHASEMIS) |
| printk("ENPHASEMIS "); |
| if (s & ENBUSFREE) |
| printk("ENBUSFREE "); |
| if (s & ENSCSIPERR) |
| printk("ENSCSIPERR "); |
| if (s & ENPHASECHG) |
| printk("ENPHASECHG "); |
| if (s & ENREQINIT) |
| printk("ENREQINIT "); |
| printk(")\n"); |
| } |
| |
| /* |
| * Show the command data of a command |
| */ |
| static void show_command(Scsi_Cmnd *ptr) |
| { |
| scmd_printk(KERN_DEBUG, ptr, "%p: cmnd=(", ptr); |
| |
| __scsi_print_command(ptr->cmnd); |
| |
| printk(KERN_DEBUG "); request_bufflen=%d; resid=%d; phase |", |
| scsi_bufflen(ptr), scsi_get_resid(ptr)); |
| |
| if (ptr->SCp.phase & not_issued) |
| printk("not issued|"); |
| if (ptr->SCp.phase & selecting) |
| printk("selecting|"); |
| if (ptr->SCp.phase & identified) |
| printk("identified|"); |
| if (ptr->SCp.phase & disconnected) |
| printk("disconnected|"); |
| if (ptr->SCp.phase & completed) |
| printk("completed|"); |
| if (ptr->SCp.phase & spiordy) |
| printk("spiordy|"); |
| if (ptr->SCp.phase & syncneg) |
| printk("syncneg|"); |
| if (ptr->SCp.phase & aborted) |
| printk("aborted|"); |
| if (ptr->SCp.phase & resetted) |
| printk("resetted|"); |
| if( SCDATA(ptr) ) { |
| printk("; next=0x%p\n", SCNEXT(ptr)); |
| } else { |
| printk("; next=(host scribble NULL)\n"); |
| } |
| } |
| |
| /* |
| * Dump the queued data |
| */ |
| static void show_queues(struct Scsi_Host *shpnt) |
| { |
| Scsi_Cmnd *ptr; |
| unsigned long flags; |
| |
| DO_LOCK(flags); |
| printk(KERN_DEBUG "\nqueue status:\nissue_SC:\n"); |
| for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr)) |
| show_command(ptr); |
| DO_UNLOCK(flags); |
| |
| printk(KERN_DEBUG "current_SC:\n"); |
| if (CURRENT_SC) |
| show_command(CURRENT_SC); |
| else |
| printk(KERN_DEBUG "none\n"); |
| |
| printk(KERN_DEBUG "disconnected_SC:\n"); |
| for (ptr = DISCONNECTED_SC; ptr; ptr = SCDATA(ptr) ? SCNEXT(ptr) : NULL) |
| show_command(ptr); |
| |
| disp_ports(shpnt); |
| disp_enintr(shpnt); |
| } |
| |
| #undef SPRINTF |
| #define SPRINTF(args...) pos += sprintf(pos, ## args) |
| |
| static int get_command(char *pos, Scsi_Cmnd * ptr) |
| { |
| char *start = pos; |
| int i; |
| |
| SPRINTF("0x%08x: target=%d; lun=%d; cmnd=( ", |
| (unsigned int) ptr, ptr->device->id, ptr->device->lun); |
| |
| for (i = 0; i < COMMAND_SIZE(ptr->cmnd[0]); i++) |
| SPRINTF("0x%02x ", ptr->cmnd[i]); |
| |
| SPRINTF("); resid=%d; residual=%d; buffers=%d; phase |", |
| scsi_get_resid(ptr), ptr->SCp.this_residual, |
| ptr->SCp.buffers_residual); |
| |
| if (ptr->SCp.phase & not_issued) |
| SPRINTF("not issued|"); |
| if (ptr->SCp.phase & selecting) |
| SPRINTF("selecting|"); |
| if (ptr->SCp.phase & disconnected) |
| SPRINTF("disconnected|"); |
| if (ptr->SCp.phase & aborted) |
| SPRINTF("aborted|"); |
| if (ptr->SCp.phase & identified) |
| SPRINTF("identified|"); |
| if (ptr->SCp.phase & completed) |
| SPRINTF("completed|"); |
| if (ptr->SCp.phase & spiordy) |
| SPRINTF("spiordy|"); |
| if (ptr->SCp.phase & syncneg) |
| SPRINTF("syncneg|"); |
| SPRINTF("; next=0x%p\n", SCNEXT(ptr)); |
| |
| return (pos - start); |
| } |
| |
| static int get_ports(struct Scsi_Host *shpnt, char *pos) |
| { |
| char *start = pos; |
| int s; |
| |
| SPRINTF("\n%s: %s(%s) ", CURRENT_SC ? "on bus" : "waiting", states[STATE].name, states[PREVSTATE].name); |
| |
| s = GETPORT(SCSISEQ); |
| SPRINTF("SCSISEQ( "); |
| if (s & TEMODEO) |
| SPRINTF("TARGET MODE "); |
| if (s & ENSELO) |
| SPRINTF("SELO "); |
| if (s & ENSELI) |
| SPRINTF("SELI "); |
| if (s & ENRESELI) |
| SPRINTF("RESELI "); |
| if (s & ENAUTOATNO) |
| SPRINTF("AUTOATNO "); |
| if (s & ENAUTOATNI) |
| SPRINTF("AUTOATNI "); |
| if (s & ENAUTOATNP) |
| SPRINTF("AUTOATNP "); |
| if (s & SCSIRSTO) |
| SPRINTF("SCSIRSTO "); |
| SPRINTF(");"); |
| |
| SPRINTF(" SCSISIG("); |
| s = GETPORT(SCSISIG); |
| switch (s & P_MASK) { |
| case P_DATAO: |
| SPRINTF("DATA OUT"); |
| break; |
| case P_DATAI: |
| SPRINTF("DATA IN"); |
| break; |
| case P_CMD: |
| SPRINTF("COMMAND"); |
| break; |
| case P_STATUS: |
| SPRINTF("STATUS"); |
| break; |
| case P_MSGO: |
| SPRINTF("MESSAGE OUT"); |
| break; |
| case P_MSGI: |
| SPRINTF("MESSAGE IN"); |
| break; |
| default: |
| SPRINTF("*invalid*"); |
| break; |
| } |
| |
| SPRINTF("); "); |
| |
| SPRINTF("INTSTAT (%s); ", TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo"); |
| |
| SPRINTF("SSTAT( "); |
| s = GETPORT(SSTAT0); |
| if (s & TARGET) |
| SPRINTF("TARGET "); |
| if (s & SELDO) |
| SPRINTF("SELDO "); |
| if (s & SELDI) |
| SPRINTF("SELDI "); |
| if (s & SELINGO) |
| SPRINTF("SELINGO "); |
| if (s & SWRAP) |
| SPRINTF("SWRAP "); |
| if (s & SDONE) |
| SPRINTF("SDONE "); |
| if (s & SPIORDY) |
| SPRINTF("SPIORDY "); |
| if (s & DMADONE) |
| SPRINTF("DMADONE "); |
| |
| s = GETPORT(SSTAT1); |
| if (s & SELTO) |
| SPRINTF("SELTO "); |
| if (s & ATNTARG) |
| SPRINTF("ATNTARG "); |
| if (s & SCSIRSTI) |
| SPRINTF("SCSIRSTI "); |
| if (s & PHASEMIS) |
| SPRINTF("PHASEMIS "); |
| if (s & BUSFREE) |
| SPRINTF("BUSFREE "); |
| if (s & SCSIPERR) |
| SPRINTF("SCSIPERR "); |
| if (s & PHASECHG) |
| SPRINTF("PHASECHG "); |
| if (s & REQINIT) |
| SPRINTF("REQINIT "); |
| SPRINTF("); "); |
| |
| |
| SPRINTF("SSTAT( "); |
| |
| s = GETPORT(SSTAT0) & GETPORT(SIMODE0); |
| |
| if (s & TARGET) |
| SPRINTF("TARGET "); |
| if (s & SELDO) |
| SPRINTF("SELDO "); |
| if (s & SELDI) |
| SPRINTF("SELDI "); |
| if (s & SELINGO) |
| SPRINTF("SELINGO "); |
| if (s & SWRAP) |
| SPRINTF("SWRAP "); |
| if (s & SDONE) |
| SPRINTF("SDONE "); |
| if (s & SPIORDY) |
|
