diff options
Diffstat (limited to 'drivers/scsi/aha152x.c')
| -rw-r--r-- | drivers/scsi/aha152x.c | 3398 |
1 files changed, 3398 insertions, 0 deletions
diff --git a/drivers/scsi/aha152x.c b/drivers/scsi/aha152x.c new file mode 100644 index 000000000..e31c460a1 --- /dev/null +++ b/drivers/scsi/aha152x.c @@ -0,0 +1,3398 @@ +/* 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 <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 + +#define DO_LOCK(flags) spin_lock_irqsave(&QLOCK,flags) +#define DO_UNLOCK(flags) spin_unlock_irqrestore(&QLOCK,flags) + +#define LEAD "(scsi%d:%d:%d) " +#define INFO_LEAD KERN_INFO LEAD +#define CMDINFO(cmd) \ + (cmd) ? ((cmd)->device->host->host_no) : -1, \ + (cmd) ? ((cmd)->device->id & 0x0f) : -1, \ + (cmd) ? ((u8)(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 being 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"); + +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"); +#endif /* MODULE */ + +#ifdef __ISAPNP__ +static struct isapnp_device_id id_table[] = { + { 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_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 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; + + 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_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_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) { + SETPORT(SSTAT1, SELTO); + SETPORT(SIMODE0, ENSELDO | (DISCONNECTED_SC ? ENSELDI : 0)); + SETPORT(SIMODE1, ENSELTIMO); + } else { + SETPORT(SIMODE0, (CURRENT_SC->SCp.phase & spiordy) ? ENSPIORDY : 0); + SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE); + } + } else if(STATE==seldi) { + SETPORT(SIMODE0, 0); + SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE); + } else { + 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; + + 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)) { + scmd_printk(KERN_ERR, SCpnt, "cannot reuse command\n"); + return FAILED; + } + } else { + SCpnt->host_scribble = kmalloc(sizeof(struct aha152x_scdata), GFP_ATOMIC); + if(!SCpnt->host_scribble) { + scmd_printk(KERN_ERR, SCpnt, "allocation failed\n"); + 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 *)) +{ + return aha152x_internal_queue(SCpnt, NULL, 0, done); +} + +static DEF_SCSI_QCMD(aha152x_queue) + + +/* + * + */ +static void reset_done(Scsi_Cmnd *SCpnt) +{ + 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; + + DO_LOCK(flags); + + ptr=remove_SC(&ISSUE_SC, SCpnt); + + if(ptr) { + 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? + * + */ + + scmd_printk(KERN_ERR, SCpnt, + "cannot abort running or disconnected command\n"); + + 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(CURRENT_SC==SCpnt) { + scmd_printk(KERN_ERR, SCpnt, "cannot reset current device\n"); + 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 { + scmd_printk(KERN_DEBUG, ptr, + "queue corrupted at %p\n", ptr); + next = NULL; + } + + if (!ptr->device->soft_reset) { + 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); + + free_hard_reset_SCs(shpnt, &ISSUE_SC); + free_hard_reset_SCs(shpnt, &DISCONNECTED_SC); + + SETPORT(SCSISEQ, SCSIRSTO); + mdelay(256); + SETPORT(SCSISEQ, 0); + mdelay(DELAY); + + 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) +{ + aha152x_bus_reset_host(shpnt); + 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) + scmd_printk(KERN_ERR, CURRENT_SC, + "there's already a completed command %p " + "- will cause abort\n", 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) { + done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_ABORT << 16)); + + } else if(CURRENT_SC->SCp.phase & resetted) { + 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 */ +#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); + + 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(!(DONE_SC->SCp.phase & not_issued)) { + struct aha152x_scdata *sc; + Scsi_Cmnd *ptr = DONE_SC; + DONE_SC=NULL; + + 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(DONE_SC && DONE_SC->scsi_done) { + 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); + ptr->scsi_done(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; + + /* 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)) { + scmd_printk(KERN_ERR, CURRENT_SC, + "aha152x: passing bus free condition\n"); + 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); + + if (!CURRENT_SC) + return; + + CURRENT_SC->SCp.phase &= ~selecting; + + if (CURRENT_SC->SCp.phase & aborted) + done(shpnt, DID_ABORT << 16); + else if (TESTLO(SSTAT0, SELINGO)) + done(shpnt, DID_BUS_BUSY << 16); + else + /* ARBITRATION won, but SELECTION failed */ + 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)) + scmd_printk(KERN_ERR, CURRENT_SC, + "command should not have been issued yet\n"); + + DO_LOCK(flags); + append_SC(&ISSUE_SC, CURRENT_SC); + DO_UNLOCK(flags); + + CURRENT_SC = NULL; + } + + if (!DISCONNECTED_SC) + return; + + RECONN_TARGET=-1; + + selid = GETPORT(SELID) & ~(1 << shpnt->this_id); + + if (selid==0) { + shost_printk(KERN_INFO, shpnt, + "target id unknown (%02x)\n", selid); + return; + } + + for(target=7; !(selid & (1 << target)); target--) + ; + + if(selid & ~(1 << target)) { + shost_printk(KERN_INFO, shpnt, + "multiple targets reconnected (%02x)\n", selid); + } + + + SETPORT(SCSIID, (shpnt->this_id << OID_) | target); + SETPORT(SCSISEQ, 0); + + SETRATE(HOSTDATA(shpnt)->syncrate[target]); + + RECONN_TARGET=target; +} + +/* + * 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)) + return; + + ADDMSGI(GETPORT(SCSIDAT)); + + if(!CURRENT_SC) { + if(LASTSTATE!=seldi) { + shost_printk(KERN_ERR, shpnt, + "message in w/o current command" + " not after reselection\n"); + } + + /* + * Handle reselection + */ + if(!(MSGI(0) & IDENTIFY_BASE)) { + shost_printk(KERN_ERR, shpnt, + "target didn't identify after reselection\n"); + continue; + } + + CURRENT_SC = remove_lun_SC(&DISCONNECTED_SC, RECONN_TARGET, MSGI(0) & 0x3f); + + if (!CURRENT_SC) { + show_queues(shpnt); + shost_printk(KERN_ERR, shpnt, + "no disconnected command" + " for target %d/%d\n", + RECONN_TARGET, MSGI(0) & 0x3f); + continue; + } + + 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) + scmd_printk(KERN_WARNING, CURRENT_SC, + "target was not allowed to disconnect\n"); + + CURRENT_SC->SCp.phase |= disconnected; + break; + + case COMMAND_COMPLETE: + CURRENT_SC->SCp.phase |= completed; + break; + + case MESSAGE_REJECT: + if (SYNCNEG==1) { + scmd_printk(KERN_INFO, CURRENT_SC, + "Synchronous Data Transfer Request" + " was rejected\n"); + SYNCNEG=2; /* negotiation completed */ + } else + scmd_printk(KERN_INFO, CURRENT_SC, + "inbound message (MESSAGE REJECT)\n"); + 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) { + scmd_printk(KERN_ERR, CURRENT_SC, + "SDTR message length!=3\n"); + 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); + scmd_printk(KERN_INFO, + CURRENT_SC, + "received Synchronous Data Transfer Request invalid - rejected\n"); + 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 */ + scmd_printk(KERN_INFO, + CURRENT_SC, + "Synchronous Data Transfer Request too slow - Rejecting\n"); + ADDMSGO(MESSAGE_REJECT); + } + + /* negotiation completed */ + SYNCNEG=2; + 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) + scmd_printk(KERN_WARNING, CURRENT_SC, + "target left before message completed (%d)\n", + MSGILEN); + + if (MSGOLEN > 0 && !(GETPORT(SSTAT1) & BUSFREE)) + 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 { + scmd_printk(KERN_INFO, CURRENT_SC, + "unexpected MESSAGE OUT phase; rejecting\n"); + ADDMSGO(MESSAGE_REJECT); + } + } + +} + +/* + * message out phase + * + */ +static void msgo_run(struct Scsi_Host *shpnt) +{ + while(MSGO_I<MSGOLEN) { + if (TESTLO(SSTAT0, SPIORDY)) + 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) { + scmd_printk(KERN_ERR, CURRENT_SC, + "message sent incompletely (%d/%d)\n", + MSGO_I, MSGOLEN); + if(SYNCNEG==1) { + scmd_printk(KERN_INFO, CURRENT_SC, + "Synchronous Data Transfer Request was rejected\n"); + SYNCNEG=2; + } + } + + MSGO_I = 0; + MSGOLEN = 0; +} + +/* + * command phase + * + */ +static void cmd_init(struct Scsi_Host *shpnt) +{ + if (CURRENT_SC->SCp.sent_command) { + scmd_printk(KERN_ERR, CURRENT_SC, + "command already sent\n"); + done(shpnt, DID_ERROR << 16); + return; + } + + CMD_I=0; +} + +/* + * command phase + * + */ +static void cmd_run(struct Scsi_Host *shpnt) +{ + while(CMD_I<CURRENT_SC->cmd_len) { + if (TESTLO(SSTAT0, SPIORDY)) + return; + + SETPORT(SCSIDAT, CURRENT_SC->cmnd[CMD_I++]); + } +} + +static void cmd_end(struct Scsi_Host *shpnt) +{ + if(CMD_I<CURRENT_SC->cmd_len) + scmd_printk(KERN_ERR, CURRENT_SC, + "command sent incompletely (%d/%d)\n", + 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)) + return; + + CURRENT_SC->SCp.Status = GETPORT(SCSIDAT); + +} + +/* + * 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; +} + +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)) { + scmd_printk(KERN_ERR, CURRENT_SC, "datai timeout\n"); + 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)) { + scmd_printk(KERN_ERR, CURRENT_SC, + "datai sempty timeout"); + 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) { + SETPORT(DMACNTRL0, ENDMA|_8BIT); + *CURRENT_SC->SCp.ptr++ = GETPORT(DATAPORT); + CURRENT_SC->SCp.this_residual--; + DATA_LEN++; + SETPORT(DMACNTRL0, ENDMA); + } + + if (data_count > 1) { + 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) { + scmd_printk(KERN_ERR, CURRENT_SC, + "no buffers left for %d(%d) bytes" + " (data overrun!?)\n", + fifodata, GETPORT(FIFOSTAT)); + SETPORT(DMACNTRL0, ENDMA|_8BIT); + while(fifodata>0) { + int data; + data=GETPORT(DATAPORT); + 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 + */ + scmd_printk(KERN_ERR, CURRENT_SC, + "fifos should be empty and phase should have changed\n"); + } + + if(DATA_LEN!=GETSTCNT()) { + scmd_printk(KERN_ERR, CURRENT_SC, + "manual transfer count differs from automatic " + "(count=%d;stcnt=%d;diff=%d;fifostat=%d)", + DATA_LEN, GETSTCNT(), GETSTCNT()-DATA_LEN, + GETPORT(FIFOSTAT)); + mdelay(10000); + } +} + +static void datai_end(struct Scsi_Host *shpnt) +{ + CMD_INC_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); +} + +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)) { + scmd_printk(KERN_ERR, CURRENT_SC, + "datao fifo not empty (%d)", + GETPORT(FIFOSTAT)); + 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)) { + scmd_printk(KERN_ERR, CURRENT_SC, "dataout timeout\n"); + break; + } + } +} + +static void datao_end(struct Scsi_Host *shpnt) +{ + if(TESTLO(DMASTAT, DFIFOEMP)) { + int 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; + } + + 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) { + scmd_printk(KERN_INFO, CURRENT_SC, "reselection missed?"); + } + + if(STATE!=PREVSTATE) { + LASTSTATE=PREVSTATE; + } + + return dataphase; +} + +/* + * handle parity error + * + * FIXME: in which phase? + * + */ +static void parerr_run(struct Scsi_Host *shpnt) +{ + scmd_printk(KERN_ERR, CURRENT_SC, "parity error\n"); + done(shpnt, DID_PARITY << 16); +} + +/* + * handle reset in + * + */ +static void rsti_run(struct Scsi_Host *shpnt) +{ + Scsi_Cmnd *ptr; + + shost_printk(KERN_NOTICE, shpnt, "scsi reset in\n"); + + 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); + + /* + * 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 + scmd_printk(KERN_ERR, CURRENT_SC, + "unexpected state (%x)\n", 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 + + } 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) +{ + shost_printk(KERN_EMERG, shpnt, "%s\n", msg); + show_queues(shpnt); + panic("aha152x panic\n"); +} + +/* + * display enabled interrupts + */ +static void disp_enintr(struct Scsi_Host *shpnt) +{ + int s0, s1; + + s0 = GETPORT(SIMODE0); + s1 = GETPORT(SIMODE1); + + shost_printk(KERN_DEBUG, shpnt, + "enabled interrupts (%s%s%s%s%s%s%s%s%s%s%s%s%s%s)\n", + (s0 & ENSELDO) ? "ENSELDO " : "", + (s0 & ENSELDI) ? "ENSELDI " : "", + (s0 & ENSELINGO) ? "ENSELINGO " : "", + (s0 & ENSWRAP) ? "ENSWRAP " : "", + (s0 & ENSDONE) ? "ENSDONE " : "", + (s0 & ENSPIORDY) ? "ENSPIORDY " : "", + (s0 & ENDMADONE) ? "ENDMADONE " : "", + (s1 & ENSELTIMO) ? "ENSELTIMO " : "", + (s1 & ENATNTARG) ? "ENATNTARG " : "", + (s1 & ENPHASEMIS) ? "ENPHASEMIS " : "", + (s1 & ENBUSFREE) ? "ENBUSFREE " : "", + (s1 & ENSCSIPERR) ? "ENSCSIPERR " : "", + (s1 & ENPHASECHG) ? "ENPHASECHG " : "", + (s1 & ENREQINIT) ? "ENREQINIT " : ""); +} + +/* + * Show the command data of a command + */ +static void show_command(Scsi_Cmnd *ptr) +{ + scsi_print_command(ptr); + scmd_printk(KERN_DEBUG, ptr, + "request_bufflen=%d; resid=%d; " + "phase |%s%s%s%s%s%s%s%s%s; next=0x%p", + scsi_bufflen(ptr), scsi_get_resid(ptr), + (ptr->SCp.phase & not_issued) ? "not issued|" : "", + (ptr->SCp.phase & selecting) ? "selecting|" : "", + (ptr->SCp.phase & identified) ? "identified|" : "", + (ptr->SCp.phase & disconnected) ? "disconnected|" : "", + (ptr->SCp.phase & completed) ? "completed|" : "", + (ptr->SCp.phase & spiordy) ? "spiordy|" : "", + (ptr->SCp.phase & syncneg) ? "syncneg|" : "", + (ptr->SCp.phase & aborted) ? "aborted|" : "", + (ptr->SCp.phase & resetted) ? "resetted|" : "", + (SCDATA(ptr)) ? SCNEXT(ptr) : NULL); +} + +/* + * 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_enintr(shpnt); +} + +static void get_command(struct seq_file *m, Scsi_Cmnd * ptr) +{ + int i; + + seq_printf(m, "%p: target=%d; lun=%d; cmnd=( ", + ptr, ptr->device->id, (u8)ptr->device->lun); + + for (i = 0; i < COMMAND_SIZE(ptr->cmnd[0]); i++) + seq_printf(m, "0x%02x ", ptr->cmnd[i]); + + seq_printf(m, "); 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) + seq_puts(m, "not issued|"); + if (ptr->SCp.phase & selecting) + seq_puts(m, "selecting|"); + if (ptr->SCp.phase & disconnected) + seq_puts(m, "disconnected|"); + if (ptr->SCp.phase & aborted) + seq_puts(m, "aborted|"); + if (ptr->SCp.phase & identified) + seq_puts(m, "identified|"); + if (ptr->SCp.phase & completed) + seq_puts(m, "completed|"); + if (ptr->SCp.phase & spiordy) + seq_puts(m, "spiordy|"); + if (ptr->SCp.phase & syncneg) + seq_puts(m, "syncneg|"); + seq_printf(m, "; next=0x%p\n", SCNEXT(ptr)); +} + +static void get_ports(struct seq_file *m, struct Scsi_Host *shpnt) +{ + int s; + + seq_printf(m, "\n%s: %s(%s) ", CURRENT_SC ? "on bus" : "waiting", states[STATE].name, states[PREVSTATE].name); + + s = GETPORT(SCSISEQ); + seq_puts(m, "SCSISEQ( "); + if (s & TEMODEO) + seq_puts(m, "TARGET MODE "); + if (s & ENSELO) + seq_puts(m, "SELO "); + if (s & ENSELI) + seq_puts(m, "SELI "); + if (s & ENRESELI) + seq_puts(m, "RESELI "); + if (s & ENAUTOATNO) + seq_puts(m, "AUTOATNO "); + if (s & ENAUTOATNI) + seq_puts(m, "AUTOATNI "); + if (s & ENAUTOATNP) + seq_puts(m, "AUTOATNP "); + if (s & SCSIRSTO) + seq_puts(m, "SCSIRSTO "); + seq_puts(m, ");"); + + seq_puts(m, " SCSISIG("); + s = GETPORT(SCSISIG); + switch (s & P_MASK) { + case P_DATAO: + seq_puts(m, "DATA OUT"); + break; + case P_DATAI: + seq_puts(m, "DATA IN"); + break; + case P_CMD: + seq_puts(m, "COMMAND"); + break; + case P_STATUS: + seq_puts(m, "STATUS"); + break; + case P_MSGO: + seq_puts(m, "MESSAGE OUT"); + break; + case P_MSGI: + seq_puts(m, "MESSAGE IN"); + break; + default: + seq_puts(m, "*invalid*"); + break; + } + + seq_puts(m, "); "); + + seq_printf(m, "INTSTAT (%s); ", TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo"); + + seq_puts(m, "SSTAT( "); + s = GETPORT(SSTAT0); + if (s & TARGET) + seq_puts(m, "TARGET "); + if (s & SELDO) + seq_puts(m, "SELDO "); + if (s & SELDI) + seq_puts(m, "SELDI "); + if (s & SELINGO) + seq_puts(m, "SELINGO "); + if (s & SWRAP) + seq_puts(m, "SWRAP "); + if (s & SDONE) + seq_puts(m, "SDONE "); + if (s & SPIORDY) + seq_puts(m, "SPIORDY "); + if (s & DMADONE) + seq_puts(m, "DMADONE "); + + s = GETPORT(SSTAT1); + if (s & SELTO) + seq_puts(m, "SELTO "); + if (s & ATNTARG) + seq_puts(m, "ATNTARG "); + if (s & SCSIRSTI) + seq_puts(m, "SCSIRSTI "); + if (s & PHASEMIS) + seq_puts(m, "PHASEMIS "); + if (s & BUSFREE) + seq_puts(m, "BUSFREE "); + if (s & SCSIPERR) + seq_puts(m, "SCSIPERR "); + if (s & PHASECHG) + seq_puts(m, "PHASECHG "); + if (s & REQINIT) + seq_puts(m, "REQINIT "); + seq_puts(m, "); "); + + + seq_puts(m, "SSTAT( "); + + s = GETPORT(SSTAT0) & GETPORT(SIMODE0); + + if (s & TARGET) + seq_puts(m, "TARGET "); + if (s & SELDO) + seq_puts(m, "SELDO "); + if (s & SELDI) + seq_puts(m, "SELDI "); + if (s & SELINGO) + seq_puts(m, "SELINGO "); + if (s & SWRAP) + seq_puts(m, "SWRAP "); + if (s & SDONE) + seq_puts(m, "SDONE "); + if (s & SPIORDY) + seq_puts(m, "SPIORDY "); + if (s & DMADONE) + seq_puts(m, "DMADONE "); + + s = GETPORT(SSTAT1) & GETPORT(SIMODE1); + + if (s & SELTO) + seq_puts(m, "SELTO "); + if (s & ATNTARG) + seq_puts(m, "ATNTARG "); + if (s & SCSIRSTI) + seq_puts(m, "SCSIRSTI "); + if (s & PHASEMIS) + seq_puts(m, "PHASEMIS "); + if (s & BUSFREE) + seq_puts(m, "BUSFREE "); + if (s & SCSIPERR) + seq_puts(m, "SCSIPERR "); + if (s & PHASECHG) + seq_puts(m, "PHASECHG "); + if (s & REQINIT) + seq_puts(m, "REQINIT "); + seq_puts(m, "); "); + + seq_puts(m, "SXFRCTL0( "); + + s = GETPORT(SXFRCTL0); + if (s & SCSIEN) + seq_puts(m, "SCSIEN "); + if (s & DMAEN) + seq_puts(m, "DMAEN "); + if (s & CH1) + seq_puts(m, "CH1 "); + if (s & CLRSTCNT) + seq_puts(m, "CLRSTCNT "); + if (s & SPIOEN) + seq_puts(m, "SPIOEN "); + if (s & CLRCH1) + seq_puts(m, "CLRCH1 "); + seq_puts(m, "); "); + + seq_puts(m, "SIGNAL( "); + + s = GETPORT(SCSISIG); + if (s & SIG_ATNI) + seq_puts(m, "ATNI "); + if (s & SIG_SELI) + seq_puts(m, "SELI "); + if (s & SIG_BSYI) + seq_puts(m, "BSYI "); + if (s & SIG_REQI) + seq_puts(m, "REQI "); + if (s & SIG_ACKI) + seq_puts(m, "ACKI "); + seq_puts(m, "); "); + + seq_printf(m, "SELID(%02x), ", GETPORT(SELID)); + + seq_printf(m, "STCNT(%d), ", GETSTCNT()); + + seq_puts(m, "SSTAT2( "); + + s = GETPORT(SSTAT2); + if (s & SOFFSET) + seq_puts(m, "SOFFSET "); + if (s & SEMPTY) + seq_puts(m, "SEMPTY "); + if (s & SFULL) + seq_puts(m, "SFULL "); + seq_printf(m, "); SFCNT (%d); ", s & (SFULL | SFCNT)); + + s = GETPORT(SSTAT3); + seq_printf(m, "SCSICNT (%d), OFFCNT(%d), ", (s & 0xf0) >> 4, s & 0x0f); + + seq_puts(m, "SSTAT4( "); + s = GETPORT(SSTAT4); + if (s & SYNCERR) + seq_puts(m, "SYNCERR "); + if (s & FWERR) + seq_puts(m, "FWERR "); + if (s & FRERR) + seq_puts(m, "FRERR "); + seq_puts(m, "); "); + + seq_puts(m, "DMACNTRL0( "); + s = GETPORT(DMACNTRL0); + seq_printf(m, "%s ", s & _8BIT ? "8BIT" : "16BIT"); + seq_printf(m, "%s ", s & DMA ? "DMA" : "PIO"); + seq_printf(m, "%s ", s & WRITE_READ ? "WRITE" : "READ"); + if (s & ENDMA) + seq_puts(m, "ENDMA "); + if (s & INTEN) + seq_puts(m, "INTEN "); + if (s & RSTFIFO) + seq_puts(m, "RSTFIFO "); + if (s & SWINT) + seq_puts(m, "SWINT "); + seq_puts(m, "); "); + + seq_puts(m, "DMASTAT( "); + s = GETPORT(DMASTAT); + if (s & ATDONE) + seq_puts(m, "ATDONE "); + if (s & WORDRDY) + seq_puts(m, "WORDRDY "); + if (s & DFIFOFULL) + seq_puts(m, "DFIFOFULL "); + if (s & DFIFOEMP) + seq_puts(m, "DFIFOEMP "); + seq_puts(m, ")\n"); + + seq_puts(m, "enabled interrupts( "); + + s = GETPORT(SIMODE0); + if (s & ENSELDO) + seq_puts(m, "ENSELDO "); + if (s & ENSELDI) + seq_puts(m, "ENSELDI "); + if (s & ENSELINGO) + seq_puts(m, "ENSELINGO "); + if (s & ENSWRAP) + seq_puts(m, "ENSWRAP "); + if (s & ENSDONE) + seq_puts(m, "ENSDONE "); + if (s & ENSPIORDY) + seq_puts(m, "ENSPIORDY "); + if (s & ENDMADONE) + seq_puts(m, "ENDMADONE "); + + s = GETPORT(SIMODE1); + if (s & ENSELTIMO) + seq_puts(m, "ENSELTIMO "); + if (s & ENATNTARG) + seq_puts(m, "ENATNTARG "); + if (s & ENPHASEMIS) + seq_puts(m, "ENPHASEMIS "); + if (s & ENBUSFREE) + seq_puts(m, "ENBUSFREE "); + if (s & ENSCSIPERR) + seq_puts(m, "ENSCSIPERR "); + if (s & ENPHASECHG) + seq_puts(m, "ENPHASECHG "); + if (s & ENREQINIT) + seq_puts(m, "ENREQINIT "); + seq_puts(m, ")\n"); +} + +static int aha152x_set_info(struct Scsi_Host *shpnt, char *buffer, int length) +{ + if(!shpnt || !buffer || length<8 || strncmp("aha152x ", buffer, 8)!=0) + return -EINVAL; + +#if defined(AHA152X_STAT) + if(length>13 && strncmp("reset", buffer+8, 5)==0) { + int i; + + HOSTDATA(shpnt)->total_commands=0; + HOSTDATA(shpnt)->disconnections=0; + HOSTDATA(shpnt)->busfree_without_any_action=0; + HOSTDATA(shpnt)->busfree_without_old_command=0; + HOSTDATA(shpnt)->busfree_without_new_command=0; + HOSTDATA(shpnt)->busfree_without_done_command=0; + HOSTDATA(shpnt)->busfree_with_check_condition=0; + for (i = idle; i<maxstate; i++) { + HOSTDATA(shpnt)->count[i]=0; + HOSTDATA(shpnt)->count_trans[i]=0; + HOSTDATA(shpnt)->time[i]=0; + } + + shost_printk(KERN_INFO, shpnt, "aha152x: stats reset.\n"); + + } else +#endif + { + return -EINVAL; + } + + + return length; +} + +static int aha152x_show_info(struct seq_file *m, struct Scsi_Host *shpnt) +{ + int i; + Scsi_Cmnd *ptr; + unsigned long flags; + + seq_puts(m, AHA152X_REVID "\n"); + + seq_printf(m, "ioports 0x%04lx to 0x%04lx\n", + shpnt->io_port, shpnt->io_port + shpnt->n_io_port - 1); + seq_printf(m, "interrupt 0x%02x\n", shpnt->irq); + seq_printf(m, "disconnection/reconnection %s\n", + RECONNECT ? "enabled" : "disabled"); + seq_printf(m, "parity checking %s\n", + PARITY ? "enabled" : "disabled"); + seq_printf(m, "synchronous transfers %s\n", + SYNCHRONOUS ? "enabled" : "disabled"); + seq_printf(m, "%d commands currently queued\n", HOSTDATA(shpnt)->commands); + + if(SYNCHRONOUS) { + seq_puts(m, "synchronously operating targets (tick=50 ns):\n"); + for (i = 0; i < 8; i++) + if (HOSTDATA(shpnt)->syncrate[i] & 0x7f) + seq_printf(m, "target %d: period %dT/%dns; req/ack offset %d\n", + i, + (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2), + (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2) * 50, + HOSTDATA(shpnt)->syncrate[i] & 0x0f); + } + seq_puts(m, "\nqueue status:\n"); + DO_LOCK(flags); + if (ISSUE_SC) { + seq_puts(m, "not yet issued commands:\n"); + for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr)) + get_command(m, ptr); + } else + seq_puts(m, "no not yet issued commands\n"); + DO_UNLOCK(flags); + + if (CURRENT_SC) { + seq_puts(m, "current command:\n"); + get_command(m, CURRENT_SC); + } else + seq_puts(m, "no current command\n"); + + if (DISCONNECTED_SC) { + seq_puts(m, "disconnected commands:\n"); + for (ptr = DISCONNECTED_SC; ptr; ptr = SCNEXT(ptr)) + get_command(m, ptr); + } else + seq_puts(m, "no disconnected commands\n"); + + get_ports(m, shpnt); + +#if defined(AHA152X_STAT) + seq_printf(m, "statistics:\n" + "total commands: %d\n" + "disconnections: %d\n" + "busfree with check condition: %d\n" + "busfree without old command: %d\n" + "busfree without new command: %d\n" + "busfree without done command: %d\n" + "busfree without any action: %d\n" + "state " + "transitions " + "count " + "time\n", + HOSTDATA(shpnt)->total_commands, + HOSTDATA(shpnt)->disconnections, + HOSTDATA(shpnt)->busfree_with_check_condition, + HOSTDATA(shpnt)->busfree_without_old_command, + HOSTDATA(shpnt)->busfree_without_new_command, + HOSTDATA(shpnt)->busfree_without_done_command, + HOSTDATA(shpnt)->busfree_without_any_action); + for(i=0; i<maxstate; i++) { + seq_printf(m, "%-10s %-12d %-12d %-12ld\n", + states[i].name, + HOSTDATA(shpnt)->count_trans[i], + HOSTDATA(shpnt)->count[i], + HOSTDATA(shpnt)->time[i]); + } +#endif + return 0; +} + +static int aha152x_adjust_queue(struct scsi_device *device) +{ + blk_queue_bounce_limit(device->request_queue, BLK_BOUNCE_HIGH); + return 0; +} + +static struct scsi_host_template aha152x_driver_template = { + .module = THIS_MODULE, + .name = AHA152X_REVID, + .proc_name = "aha152x", + .show_info = aha152x_show_info, + .write_info = aha152x_set_info, + .queuecommand = aha152x_queue, + .eh_abort_handler = aha152x_abort, + .eh_device_reset_handler = aha152x_device_reset, + .eh_bus_reset_handler = aha152x_bus_reset, + .eh_host_reset_handler = aha152x_host_reset, + .bios_param = aha152x_biosparam, + .can_queue = 1, + .this_id = 7, + .sg_tablesize = SG_ALL, + .cmd_per_lun = 1, + .use_clustering = DISABLE_CLUSTERING, + .slave_alloc = aha152x_adjust_queue, +}; + +#if !defined(PCMCIA) +static int setup_count; +static struct aha152x_setup setup[2]; + +/* possible i/o addresses for the AIC-6260; default first */ +static unsigned short ports[] = { 0x340, 0x140 }; + +#if !defined(SKIP_BIOSTEST) +/* possible locations for the Adaptec BIOS; defaults first */ +static unsigned int addresses[] = +{ + 0xdc000, /* default first */ + 0xc8000, + 0xcc000, + 0xd0000, + 0xd4000, + 0xd8000, + 0xe0000, + 0xeb800, /* VTech Platinum SMP */ + 0xf0000, +}; + +/* signatures for various AIC-6[23]60 based controllers. + The point in detecting signatures is to avoid useless and maybe + harmful probes on ports. I'm not sure that all listed boards pass + auto-configuration. For those which fail the BIOS signature is + obsolete, because user intervention to supply the configuration is + needed anyway. May be an information whether or not the BIOS supports + extended translation could be also useful here. */ +static struct signature { + unsigned char *signature; + int sig_offset; + int sig_length; +} signatures[] = +{ + { "Adaptec AHA-1520 BIOS", 0x102e, 21 }, + /* Adaptec 152x */ + { "Adaptec AHA-1520B", 0x000b, 17 }, + /* Adaptec 152x rev B */ + { "Adaptec AHA-1520B", 0x0026, 17 }, + /* Iomega Jaz Jet ISA (AIC6370Q) */ + { "Adaptec ASW-B626 BIOS", 0x1029, 21 }, + /* on-board controller */ + { "Adaptec BIOS: ASW-B626", 0x000f, 22 }, + /* on-board controller */ + { "Adaptec ASW-B626 S2", 0x2e6c, 19 }, + /* on-board controller */ + { "Adaptec BIOS:AIC-6360", 0x000c, 21 }, + /* on-board controller */ + { "ScsiPro SP-360 BIOS", 0x2873, 19 }, + /* ScsiPro-Controller */ + { "GA-400 LOCAL BUS SCSI BIOS", 0x102e, 26 }, + /* Gigabyte Local-Bus-SCSI */ + { "Adaptec BIOS:AVA-282X", 0x000c, 21 }, + /* Adaptec 282x */ + { "Adaptec IBM Dock II SCSI", 0x2edd, 24 }, + /* IBM Thinkpad Dock II */ + { "Adaptec BIOS:AHA-1532P", 0x001c, 22 }, + /* IBM Thinkpad Dock II SCSI */ + { "DTC3520A Host Adapter BIOS", 0x318a, 26 }, + /* DTC 3520A ISA SCSI */ +}; +#endif /* !SKIP_BIOSTEST */ + +/* + * Test, if port_base is valid. + * + */ +static int aha152x_porttest(int io_port) +{ + int i; + + SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */ + for (i = 0; i < 16; i++) + SETPORT(io_port + O_STACK, i); + + SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */ + for (i = 0; i < 16 && GETPORT(io_port + O_STACK) == i; i++) + ; + + return (i == 16); +} + +static int tc1550_porttest(int io_port) +{ + int i; + + SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */ + for (i = 0; i < 16; i++) + SETPORT(io_port + O_STACK, i); + + SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */ + for (i = 0; i < 16 && GETPORT(io_port + O_TC_STACK) == i; i++) + ; + + return (i == 16); +} + + +static int checksetup(struct aha152x_setup *setup) +{ + int i; + for (i = 0; i < ARRAY_SIZE(ports) && (setup->io_port != ports[i]); i++) + ; + + if (i == ARRAY_SIZE(ports)) + return 0; + + if (!request_region(setup->io_port, IO_RANGE, "aha152x")) { + printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup->io_port); + return 0; + } + + if( aha152x_porttest(setup->io_port) ) { + setup->tc1550=0; + } else if( tc1550_porttest(setup->io_port) ) { + setup->tc1550=1; + } else { + release_region(setup->io_port, IO_RANGE); + return 0; + } + + release_region(setup->io_port, IO_RANGE); + + if ((setup->irq < IRQ_MIN) || (setup->irq > IRQ_MAX)) + return 0; + + if ((setup->scsiid < 0) || (setup->scsiid > 7)) + return 0; + + if ((setup->reconnect < 0) || (setup->reconnect > 1)) + return 0; + + if ((setup->parity < 0) || (setup->parity > 1)) + return 0; + + if ((setup->synchronous < 0) || (setup->synchronous > 1)) + return 0; + + if ((setup->ext_trans < 0) || (setup->ext_trans > 1)) + return 0; + + + return 1; +} + + +static int __init aha152x_init(void) +{ + int i, j, ok; +#if defined(AUTOCONF) + aha152x_config conf; +#endif +#ifdef __ISAPNP__ + struct pnp_dev *dev=NULL, *pnpdev[2] = {NULL, NULL}; +#endif + + if ( setup_count ) { + printk(KERN_INFO "aha152x: processing commandline: "); + + for (i = 0; i<setup_count; i++) { + if (!checksetup(&setup[i])) { + printk(KERN_ERR "\naha152x: %s\n", setup[i].conf); + printk(KERN_ERR "aha152x: invalid line\n"); + } + } + printk("ok\n"); + } + +#if defined(SETUP0) + if (setup_count < ARRAY_SIZE(setup)) { + struct aha152x_setup override = SETUP0; + + if (setup_count == 0 || (override.io_port != setup[0].io_port)) { + if (!checksetup(&override)) { + printk(KERN_ERR "\naha152x: invalid override SETUP0={0x%x,%d,%d,%d,%d,%d,%d,%d}\n", + override.io_port, + override.irq, + override.scsiid, + override.reconnect, + override.parity, + override.synchronous, + override.delay, + override.ext_trans); + } else + setup[setup_count++] = override; + } + } +#endif + +#if defined(SETUP1) + if (setup_count < ARRAY_SIZE(setup)) { + struct aha152x_setup override = SETUP1; + + if (setup_count == 0 || (override.io_port != setup[0].io_port)) { + if (!checksetup(&override)) { + printk(KERN_ERR "\naha152x: invalid override SETUP1={0x%x,%d,%d,%d,%d,%d,%d,%d}\n", + override.io_port, + override.irq, + override.scsiid, + override.reconnect, + override.parity, + override.synchronous, + override.delay, + override.ext_trans); + } else + setup[setup_count++] = override; + } + } +#endif + +#if defined(MODULE) + if (setup_count<ARRAY_SIZE(setup) && (aha152x[0]!=0 || io[0]!=0 || irq[0]!=0)) { + if(aha152x[0]!=0) { + setup[setup_count].conf = ""; + setup[setup_count].io_port = aha152x[0]; + setup[setup_count].irq = aha152x[1]; + setup[setup_count].scsiid = aha152x[2]; + setup[setup_count].reconnect = aha152x[3]; + setup[setup_count].parity = aha152x[4]; + setup[setup_count].synchronous = aha152x[5]; + setup[setup_count].delay = aha152x[6]; + setup[setup_count].ext_trans = aha152x[7]; + } else if (io[0] != 0 || irq[0] != 0) { + if(io[0]!=0) setup[setup_count].io_port = io[0]; + if(irq[0]!=0) setup[setup_count].irq = irq[0]; + + setup[setup_count].scsiid = scsiid[0]; + setup[setup_count].reconnect = reconnect[0]; + setup[setup_count].parity = parity[0]; + setup[setup_count].synchronous = sync[0]; + setup[setup_count].delay = delay[0]; + setup[setup_count].ext_trans = exttrans[0]; + } + + if (checksetup(&setup[setup_count])) + setup_count++; + else + printk(KERN_ERR "aha152x: invalid module params io=0x%x, irq=%d,scsiid=%d,reconnect=%d,parity=%d,sync=%d,delay=%d,exttrans=%d\n", + setup[setup_count].io_port, + setup[setup_count].irq, + setup[setup_count].scsiid, + setup[setup_count].reconnect, + setup[setup_count].parity, + setup[setup_count].synchronous, + setup[setup_count].delay, + setup[setup_count].ext_trans); + } + + if (setup_count<ARRAY_SIZE(setup) && (aha152x1[0]!=0 || io[1]!=0 || irq[1]!=0)) { + if(aha152x1[0]!=0) { + setup[setup_count].conf = ""; + setup[setup_count].io_port = aha152x1[0]; + setup[setup_count].irq = aha152x1[1]; + setup[setup_count].scsiid = aha152x1[2]; + setup[setup_count].reconnect = aha152x1[3]; + setup[setup_count].parity = aha152x1[4]; + setup[setup_count].synchronous = aha152x1[5]; + setup[setup_count].delay = aha152x1[6]; + setup[setup_count].ext_trans = aha152x1[7]; + } else if (io[1] != 0 || irq[1] != 0) { + if(io[1]!=0) setup[setup_count].io_port = io[1]; + if(irq[1]!=0) setup[setup_count].irq = irq[1]; + + setup[setup_count].scsiid = scsiid[1]; + setup[setup_count].reconnect = reconnect[1]; + setup[setup_count].parity = parity[1]; + setup[setup_count].synchronous = sync[1]; + setup[setup_count].delay = delay[1]; + setup[setup_count].ext_trans = exttrans[1]; + } + if (checksetup(&setup[setup_count])) + setup_count++; + else + printk(KERN_ERR "aha152x: invalid module params io=0x%x, irq=%d,scsiid=%d,reconnect=%d,parity=%d,sync=%d,delay=%d,exttrans=%d\n", + setup[setup_count].io_port, + setup[setup_count].irq, + setup[setup_count].scsiid, + setup[setup_count].reconnect, + setup[setup_count].parity, + setup[setup_count].synchronous, + setup[setup_count].delay, + setup[setup_count].ext_trans); + } +#endif + +#ifdef __ISAPNP__ + for(i=0; setup_count<ARRAY_SIZE(setup) && id_table[i].vendor; i++) { + while ( setup_count<ARRAY_SIZE(setup) && + (dev=pnp_find_dev(NULL, id_table[i].vendor, id_table[i].function, dev)) ) { + if (pnp_device_attach(dev) < 0) + continue; + + if (pnp_activate_dev(dev) < 0) { + pnp_device_detach(dev); + continue; + } + + if (!pnp_port_valid(dev, 0)) { + pnp_device_detach(dev); + continue; + } + + if (setup_count==1 && pnp_port_start(dev, 0)==setup[0].io_port) { + pnp_device_detach(dev); + continue; + } + + setup[setup_count].io_port = pnp_port_start(dev, 0); + setup[setup_count].irq = pnp_irq(dev, 0); + setup[setup_count].scsiid = 7; + setup[setup_count].reconnect = 1; + setup[setup_count].parity = 1; + setup[setup_count].synchronous = 1; + setup[setup_count].delay = DELAY_DEFAULT; + setup[setup_count].ext_trans = 0; +#if defined(__ISAPNP__) + pnpdev[setup_count] = dev; +#endif + printk (KERN_INFO + "aha152x: found ISAPnP adapter at io=0x%03x, irq=%d\n", + setup[setup_count].io_port, setup[setup_count].irq); + setup_count++; + } + } +#endif + +#if defined(AUTOCONF) + if (setup_count<ARRAY_SIZE(setup)) { +#if !defined(SKIP_BIOSTEST) + ok = 0; + for (i = 0; i < ARRAY_SIZE(addresses) && !ok; i++) { + void __iomem *p = ioremap(addresses[i], 0x4000); + if (!p) + continue; + for (j = 0; j<ARRAY_SIZE(signatures) && !ok; j++) + ok = check_signature(p + signatures[j].sig_offset, + signatures[j].signature, signatures[j].sig_length); + iounmap(p); + } + if (!ok && setup_count == 0) + return -ENODEV; + + printk(KERN_INFO "aha152x: BIOS test: passed, "); +#else + printk(KERN_INFO "aha152x: "); +#endif /* !SKIP_BIOSTEST */ + + ok = 0; + for (i = 0; i < ARRAY_SIZE(ports) && setup_count < 2; i++) { + if ((setup_count == 1) && (setup[0].io_port == ports[i])) + continue; + + if (!request_region(ports[i], IO_RANGE, "aha152x")) { + printk(KERN_ERR "aha152x: io port 0x%x busy.\n", ports[i]); + continue; + } + + if (aha152x_porttest(ports[i])) { + setup[setup_count].tc1550 = 0; + + conf.cf_port = + (GETPORT(ports[i] + O_PORTA) << 8) + GETPORT(ports[i] + O_PORTB); + } else if (tc1550_porttest(ports[i])) { + setup[setup_count].tc1550 = 1; + + conf.cf_port = + (GETPORT(ports[i] + O_TC_PORTA) << 8) + GETPORT(ports[i] + O_TC_PORTB); + } else { + release_region(ports[i], IO_RANGE); + continue; + } + + release_region(ports[i], IO_RANGE); + + ok++; + setup[setup_count].io_port = ports[i]; + setup[setup_count].irq = IRQ_MIN + conf.cf_irq; + setup[setup_count].scsiid = conf.cf_id; + setup[setup_count].reconnect = conf.cf_tardisc; + setup[setup_count].parity = !conf.cf_parity; + setup[setup_count].synchronous = conf.cf_syncneg; + setup[setup_count].delay = DELAY_DEFAULT; + setup[setup_count].ext_trans = 0; + setup_count++; + + } + + if (ok) + printk("auto configuration: ok, "); + } +#endif + + printk("%d controller(s) configured\n", setup_count); + + for (i=0; i<setup_count; i++) { + if ( request_region(setup[i].io_port, IO_RANGE, "aha152x") ) { + struct Scsi_Host *shpnt = aha152x_probe_one(&setup[i]); + + if( !shpnt ) { + release_region(setup[i].io_port, IO_RANGE); +#if defined(__ISAPNP__) + } else if( pnpdev[i] ) { + HOSTDATA(shpnt)->pnpdev=pnpdev[i]; + pnpdev[i]=NULL; +#endif + } + } else { + printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup[i].io_port); + } + +#if defined(__ISAPNP__) + if( pnpdev[i] ) + pnp_device_detach(pnpdev[i]); +#endif + } + + return 0; +} + +static void __exit aha152x_exit(void) +{ + struct aha152x_hostdata *hd, *tmp; + + list_for_each_entry_safe(hd, tmp, &aha152x_host_list, host_list) { + struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata); + + aha152x_release(shost); + } +} + +module_init(aha152x_init); +module_exit(aha152x_exit); + +#if !defined(MODULE) +static int __init aha152x_setup(char *str) +{ + int ints[10]; + + get_options(str, ARRAY_SIZE(ints), ints); + + if(setup_count>=ARRAY_SIZE(setup)) { + printk(KERN_ERR "aha152x: you can only configure up to two controllers\n"); + return 1; + } + + setup[setup_count].conf = str; + setup[setup_count].io_port = ints[0] >= 1 ? ints[1] : 0x340; + setup[setup_count].irq = ints[0] >= 2 ? ints[2] : 11; + setup[setup_count].scsiid = ints[0] >= 3 ? ints[3] : 7; + setup[setup_count].reconnect = ints[0] >= 4 ? ints[4] : 1; + setup[setup_count].parity = ints[0] >= 5 ? ints[5] : 1; + setup[setup_count].synchronous = ints[0] >= 6 ? ints[6] : 1; + setup[setup_count].delay = ints[0] >= 7 ? ints[7] : DELAY_DEFAULT; + setup[setup_count].ext_trans = ints[0] >= 8 ? ints[8] : 0; + if (ints[0] > 8) { /*}*/ + printk(KERN_NOTICE "aha152x: usage: aha152x=<IOBASE>[,<IRQ>[,<SCSI ID>" + "[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY>[,<EXT_TRANS>]]]]]]]\n"); + } else { + setup_count++; + return 0; + } + + return 1; +} +__setup("aha152x=", aha152x_setup); +#endif + +#endif /* !PCMCIA */ |