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1// SPDX-License-Identifier: GPL-2.0-or-later2/* aha152x.c -- Adaptec AHA-152x driver3 * Author: Jürgen E. Fischer, fischer@norbit.de4 * Copyright 1993-2004 Jürgen E. Fischer5 *6 * $Id: aha152x.c,v 2.7 2004/01/24 11:42:59 fischer Exp $7 *8 * $Log: aha152x.c,v $9 * Revision 2.7 2004/01/24 11:42:59 fischer10 * - gather code that is not used by PCMCIA at the end11 * - move request_region for !PCMCIA case to detection12 * - migration to new scsi host api (remove legacy code)13 * - free host scribble before scsi_done14 * - fix error handling15 * - one isapnp device added to id_table16 *17 * Revision 2.6 2003/10/30 20:52:47 fischer18 * - interfaces changes for kernel 2.619 * - aha152x_probe_one introduced for pcmcia stub20 * - fixed pnpdev handling21 * - instead of allocation a new one, reuse command for request sense after check condition and reset22 * - fixes race in is_complete23 *24 * Revision 2.5 2002/04/14 11:24:53 fischer25 * - isapnp support26 * - abort fixed27 * - 2.5 support28 *29 * Revision 2.4 2000/12/16 12:53:56 fischer30 * - allow REQUEST SENSE to be queued31 * - handle shared PCI interrupts32 *33 * Revision 2.3 2000/11/04 16:40:26 fischer34 * - handle data overruns35 * - extend timeout for data phases36 *37 * Revision 2.2 2000/08/08 19:54:53 fischer38 * - minor changes39 *40 * Revision 2.1 2000/05/17 16:23:17 fischer41 * - signature update42 * - fix for data out w/o scatter gather43 *44 * Revision 2.0 1999/12/25 15:07:32 fischer45 * - interrupt routine completly reworked46 * - basic support for new eh code47 *48 * Revision 1.21 1999/11/10 23:46:36 fischer49 * - default to synchronous operation50 * - synchronous negotiation fixed51 * - added timeout to loops52 * - debugging output can be controlled through procfs53 *54 * Revision 1.20 1999/11/07 18:37:31 fischer55 * - synchronous operation works56 * - resid support for sg driver57 *58 * Revision 1.19 1999/11/02 22:39:59 fischer59 * - moved leading comments to README.aha152x60 * - new additional module parameters61 * - updates for 2.362 * - support for the Tripace TC1550 controller63 * - interrupt handling changed64 *65 * Revision 1.18 1996/09/07 20:10:40 fischer66 * - fixed can_queue handling (multiple outstanding commands working again)67 *68 * Revision 1.17 1996/08/17 16:05:14 fischer69 * - biosparam improved70 * - interrupt verification71 * - updated documentation72 * - cleanups73 *74 * Revision 1.16 1996/06/09 00:04:56 root75 * - added configuration symbols for insmod (aha152x/aha152x1)76 *77 * Revision 1.15 1996/04/30 14:52:06 fischer78 * - proc info fixed79 * - support for extended translation for >1GB disks80 *81 * Revision 1.14 1996/01/17 15:11:20 fischer82 * - fixed lockup in MESSAGE IN phase after reconnection83 *84 * Revision 1.13 1996/01/09 02:15:53 fischer85 * - some cleanups86 * - moved request_irq behind controller initialization87 * (to avoid spurious interrupts)88 *89 * Revision 1.12 1995/12/16 12:26:07 fischer90 * - barrier()s added91 * - configurable RESET delay added92 *93 * Revision 1.11 1995/12/06 21:18:35 fischer94 * - some minor updates95 *96 * Revision 1.10 1995/07/22 19:18:45 fischer97 * - support for 2 controllers98 * - started synchronous data transfers (not working yet)99 *100 * Revision 1.9 1995/03/18 09:20:24 root101 * - patches for PCMCIA and modules102 *103 * Revision 1.8 1995/01/21 22:07:19 root104 * - snarf_region => request_region105 * - aha152x_intr interface change106 *107 * Revision 1.7 1995/01/02 23:19:36 root108 * - updated COMMAND_SIZE to cmd_len109 * - changed sti() to restore_flags()110 * - fixed some #ifdef which generated warnings111 *112 * Revision 1.6 1994/11/24 20:35:27 root113 * - problem with odd number of bytes in fifo fixed114 *115 * Revision 1.5 1994/10/30 14:39:56 root116 * - abort code fixed117 * - debugging improved118 *119 * Revision 1.4 1994/09/12 11:33:01 root120 * - irqaction to request_irq121 * - abortion updated122 *123 * Revision 1.3 1994/08/04 13:53:05 root124 * - updates for mid-level-driver changes125 * - accept unexpected BUSFREE phase as error condition126 * - parity check now configurable127 *128 * Revision 1.2 1994/07/03 12:56:36 root129 * - cleaned up debugging code130 * - more tweaking on reset delays131 * - updated abort/reset code (pretty untested...)132 *133 * Revision 1.1 1994/05/28 21:18:49 root134 * - update for mid-level interface change (abort-reset)135 * - delays after resets adjusted for some slow devices136 *137 * Revision 1.0 1994/03/25 12:52:00 root138 * - Fixed "more data than expected" problem139 * - added new BIOS signatures140 *141 * Revision 0.102 1994/01/31 20:44:12 root142 * - minor changes in insw/outsw handling143 *144 * Revision 0.101 1993/12/13 01:16:27 root145 * - fixed STATUS phase (non-GOOD stati were dropped sometimes;146 * fixes problems with CD-ROM sector size detection & media change)147 *148 * Revision 0.100 1993/12/10 16:58:47 root149 * - fix for unsuccessful selections in case of non-continuous id assignments150 * on the scsi bus.151 *152 * Revision 0.99 1993/10/24 16:19:59 root153 * - fixed DATA IN (rare read errors gone)154 *155 * Revision 0.98 1993/10/17 12:54:44 root156 * - fixed some recent fixes (shame on me)157 * - moved initialization of scratch area to aha152x_queue158 *159 * Revision 0.97 1993/10/09 18:53:53 root160 * - DATA IN fixed. Rarely left data in the fifo.161 *162 * Revision 0.96 1993/10/03 00:53:59 root163 * - minor changes on DATA IN164 *165 * Revision 0.95 1993/09/24 10:36:01 root166 * - change handling of MSGI after reselection167 * - fixed sti/cli168 * - minor changes169 *170 * Revision 0.94 1993/09/18 14:08:22 root171 * - fixed bug in multiple outstanding command code172 * - changed detection173 * - support for kernel command line configuration174 * - reset corrected175 * - changed message handling176 *177 * Revision 0.93 1993/09/15 20:41:19 root178 * - fixed bugs with multiple outstanding commands179 *180 * Revision 0.92 1993/09/13 02:46:33 root181 * - multiple outstanding commands work (no problems with IBM drive)182 *183 * Revision 0.91 1993/09/12 20:51:46 root184 * added multiple outstanding commands185 * (some problem with this $%&? IBM device remain)186 *187 * Revision 0.9 1993/09/12 11:11:22 root188 * - corrected auto-configuration189 * - changed the auto-configuration (added some '#define's)190 * - added support for dis-/reconnection191 *192 * Revision 0.8 1993/09/06 23:09:39 root193 * - added support for the drive activity light194 * - minor changes195 *196 * Revision 0.7 1993/09/05 14:30:15 root197 * - improved phase detection198 * - now using the new snarf_region code of 0.99pl13199 *200 * Revision 0.6 1993/09/02 11:01:38 root201 * first public release; added some signatures and biosparam()202 *203 * Revision 0.5 1993/08/30 10:23:30 root204 * fixed timing problems with my IBM drive205 *206 * Revision 0.4 1993/08/29 14:06:52 root207 * fixed some problems with timeouts due incomplete commands208 *209 * Revision 0.3 1993/08/28 15:55:03 root210 * writing data works too. mounted and worked on a dos partition211 *212 * Revision 0.2 1993/08/27 22:42:07 root213 * reading data works. Mounted a msdos partition.214 *215 * Revision 0.1 1993/08/25 13:38:30 root216 * first "damn thing doesn't work" version217 *218 * Revision 0.0 1993/08/14 19:54:25 root219 * empty function bodies; detect() works.220 *221 **************************************************************************222 223 see Documentation/scsi/aha152x.rst for configuration details224 225 **************************************************************************/226 227#include <linux/module.h>228#include <asm/irq.h>229#include <linux/io.h>230#include <linux/blkdev.h>231#include <linux/completion.h>232#include <linux/errno.h>233#include <linux/string.h>234#include <linux/wait.h>235#include <linux/ioport.h>236#include <linux/delay.h>237#include <linux/proc_fs.h>238#include <linux/interrupt.h>239#include <linux/init.h>240#include <linux/kernel.h>241#include <linux/isapnp.h>242#include <linux/spinlock.h>243#include <linux/workqueue.h>244#include <linux/list.h>245#include <linux/slab.h>246 247#include <scsi/scsi.h>248#include <scsi/scsi_cmnd.h>249#include <scsi/scsi_dbg.h>250#include <scsi/scsi_device.h>251#include <scsi/scsi_eh.h>252#include <scsi/scsi_host.h>253#include <scsi/scsi_tcq.h>254#include <scsi/scsi_transport_spi.h>255#include <scsi/scsicam.h>256#include "aha152x.h"257 258static LIST_HEAD(aha152x_host_list);259 260 261/* DEFINES */262 263/* For PCMCIA cards, always use AUTOCONF */264#if defined(AHA152X_PCMCIA) || defined(MODULE)265#if !defined(AUTOCONF)266#define AUTOCONF267#endif268#endif269 270#if !defined(AUTOCONF) && !defined(SETUP0)271#error define AUTOCONF or SETUP0272#endif273 274#define DO_LOCK(flags) spin_lock_irqsave(&QLOCK,flags)275#define DO_UNLOCK(flags) spin_unlock_irqrestore(&QLOCK,flags)276 277#define LEAD "(scsi%d:%d:%d) "278#define INFO_LEAD KERN_INFO LEAD279#define CMDINFO(cmd) \280 (cmd) ? ((cmd)->device->host->host_no) : -1, \281 (cmd) ? ((cmd)->device->id & 0x0f) : -1, \282 (cmd) ? ((u8)(cmd)->device->lun & 0x07) : -1283 284static inline void285CMD_INC_RESID(struct scsi_cmnd *cmd, int inc)286{287 scsi_set_resid(cmd, scsi_get_resid(cmd) + inc);288}289 290#define DELAY_DEFAULT 1000291 292#if defined(AHA152X_PCMCIA)293#define IRQ_MIN 0294#define IRQ_MAX 16295#else296#define IRQ_MIN 9297#if defined(__PPC)298#define IRQ_MAX (nr_irqs-1)299#else300#define IRQ_MAX 12301#endif302#endif303 304enum {305 not_issued = 0x0001, /* command not yet issued */306 selecting = 0x0002, /* target is being selected */307 identified = 0x0004, /* IDENTIFY was sent */308 disconnected = 0x0008, /* target disconnected */309 completed = 0x0010, /* target sent COMMAND COMPLETE */310 aborted = 0x0020, /* ABORT was sent */311 resetted = 0x0040, /* BUS DEVICE RESET was sent */312 spiordy = 0x0080, /* waiting for SPIORDY to raise */313 syncneg = 0x0100, /* synchronous negotiation in progress */314 aborting = 0x0200, /* ABORT is pending */315 resetting = 0x0400, /* BUS DEVICE RESET is pending */316 check_condition = 0x0800, /* requesting sense after CHECK CONDITION */317};318 319struct aha152x_cmd_priv {320 char *ptr;321 int this_residual;322 struct scatterlist *buffer;323 int status;324 int message;325 int sent_command;326 int phase;327};328 329static struct aha152x_cmd_priv *aha152x_priv(struct scsi_cmnd *cmd)330{331 return scsi_cmd_priv(cmd);332}333 334MODULE_AUTHOR("Jürgen Fischer");335MODULE_DESCRIPTION(AHA152X_REVID);336MODULE_LICENSE("GPL");337 338#if !defined(AHA152X_PCMCIA)339#if defined(MODULE)340static int io[] = {0, 0};341module_param_hw_array(io, int, ioport, NULL, 0);342MODULE_PARM_DESC(io,"base io address of controller");343 344static int irq[] = {0, 0};345module_param_hw_array(irq, int, irq, NULL, 0);346MODULE_PARM_DESC(irq,"interrupt for controller");347 348static int scsiid[] = {7, 7};349module_param_array(scsiid, int, NULL, 0);350MODULE_PARM_DESC(scsiid,"scsi id of controller");351 352static int reconnect[] = {1, 1};353module_param_array(reconnect, int, NULL, 0);354MODULE_PARM_DESC(reconnect,"allow targets to disconnect");355 356static int parity[] = {1, 1};357module_param_array(parity, int, NULL, 0);358MODULE_PARM_DESC(parity,"use scsi parity");359 360static int sync[] = {1, 1};361module_param_array(sync, int, NULL, 0);362MODULE_PARM_DESC(sync,"use synchronous transfers");363 364static int delay[] = {DELAY_DEFAULT, DELAY_DEFAULT};365module_param_array(delay, int, NULL, 0);366MODULE_PARM_DESC(delay,"scsi reset delay");367 368static int exttrans[] = {0, 0};369module_param_array(exttrans, int, NULL, 0);370MODULE_PARM_DESC(exttrans,"use extended translation");371 372static int aha152x[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0};373module_param_array(aha152x, int, NULL, 0);374MODULE_PARM_DESC(aha152x, "parameters for first controller");375 376static int aha152x1[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0};377module_param_array(aha152x1, int, NULL, 0);378MODULE_PARM_DESC(aha152x1, "parameters for second controller");379#endif /* MODULE */380 381#ifdef __ISAPNP__382static struct isapnp_device_id id_table[] = {383 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1502), 0 },384 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1505), 0 },385 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1510), 0 },386 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1515), 0 },387 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1520), 0 },388 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x2015), 0 },389 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1522), 0 },390 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x2215), 0 },391 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1530), 0 },392 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x3015), 0 },393 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1532), 0 },394 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x3215), 0 },395 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x6360), 0 },396 { ISAPNP_DEVICE_SINGLE_END, }397};398MODULE_DEVICE_TABLE(isapnp, id_table);399#endif /* ISAPNP */400 401#endif /* !AHA152X_PCMCIA */402 403static const struct scsi_host_template aha152x_driver_template;404 405/*406 * internal states of the host407 *408 */409enum aha152x_state {410 idle=0,411 unknown,412 seldo,413 seldi,414 selto,415 busfree,416 msgo,417 cmd,418 msgi,419 status,420 datai,421 datao,422 parerr,423 rsti,424 maxstate425};426 427/*428 * current state information of the host429 *430 */431struct aha152x_hostdata {432 struct scsi_cmnd *issue_SC;433 /* pending commands to issue */434 435 struct scsi_cmnd *current_SC;436 /* current command on the bus */437 438 struct scsi_cmnd *disconnected_SC;439 /* commands that disconnected */440 441 struct scsi_cmnd *done_SC;442 /* command that was completed */443 444 spinlock_t lock;445 /* host lock */446 447#if defined(AHA152X_STAT)448 int total_commands;449 int disconnections;450 int busfree_without_any_action;451 int busfree_without_old_command;452 int busfree_without_new_command;453 int busfree_without_done_command;454 int busfree_with_check_condition;455 int count[maxstate];456 int count_trans[maxstate];457 unsigned long time[maxstate];458#endif459 460 int commands; /* current number of commands */461 462 int reconnect; /* disconnection allowed */463 int parity; /* parity checking enabled */464 int synchronous; /* synchronous transferes enabled */465 int delay; /* reset out delay */466 int ext_trans; /* extended translation enabled */467 468 int swint; /* software-interrupt was fired during detect() */469 int service; /* bh needs to be run */470 int in_intr; /* bh is running */471 472 /* current state,473 previous state,474 last state different from current state */475 enum aha152x_state state, prevstate, laststate;476 477 int target;478 /* reconnecting target */479 480 unsigned char syncrate[8];481 /* current synchronous transfer agreements */482 483 unsigned char syncneg[8];484 /* 0: no negotiation;485 * 1: negotiation in progress;486 * 2: negotiation completed487 */488 489 int cmd_i;490 /* number of sent bytes of current command */491 492 int msgi_len;493 /* number of received message bytes */494 unsigned char msgi[256];495 /* received message bytes */496 497 int msgo_i, msgo_len;498 /* number of sent bytes and length of current messages */499 unsigned char msgo[256];500 /* pending messages */501 502 int data_len;503 /* number of sent/received bytes in dataphase */504 505 unsigned long io_port0;506 unsigned long io_port1;507 508#ifdef __ISAPNP__509 struct pnp_dev *pnpdev;510#endif511 struct list_head host_list;512};513 514 515/*516 * host specific command extension517 *518 */519struct aha152x_scdata {520 struct scsi_cmnd *next; /* next sc in queue */521 struct completion *done;/* semaphore to block on */522 struct scsi_eh_save ses;523};524 525/* access macros for hostdata */526 527#define HOSTDATA(shpnt) ((struct aha152x_hostdata *) &shpnt->hostdata)528 529#define HOSTNO ((shpnt)->host_no)530 531#define CURRENT_SC (HOSTDATA(shpnt)->current_SC)532#define DONE_SC (HOSTDATA(shpnt)->done_SC)533#define ISSUE_SC (HOSTDATA(shpnt)->issue_SC)534#define DISCONNECTED_SC (HOSTDATA(shpnt)->disconnected_SC)535#define QLOCK (HOSTDATA(shpnt)->lock)536#define QLOCKER (HOSTDATA(shpnt)->locker)537#define QLOCKERL (HOSTDATA(shpnt)->lockerl)538 539#define STATE (HOSTDATA(shpnt)->state)540#define PREVSTATE (HOSTDATA(shpnt)->prevstate)541#define LASTSTATE (HOSTDATA(shpnt)->laststate)542 543#define RECONN_TARGET (HOSTDATA(shpnt)->target)544 545#define CMD_I (HOSTDATA(shpnt)->cmd_i)546 547#define MSGO(i) (HOSTDATA(shpnt)->msgo[i])548#define MSGO_I (HOSTDATA(shpnt)->msgo_i)549#define MSGOLEN (HOSTDATA(shpnt)->msgo_len)550#define ADDMSGO(x) (MSGOLEN<256 ? (void)(MSGO(MSGOLEN++)=x) : aha152x_error(shpnt,"MSGO overflow"))551 552#define MSGI(i) (HOSTDATA(shpnt)->msgi[i])553#define MSGILEN (HOSTDATA(shpnt)->msgi_len)554#define ADDMSGI(x) (MSGILEN<256 ? (void)(MSGI(MSGILEN++)=x) : aha152x_error(shpnt,"MSGI overflow"))555 556#define DATA_LEN (HOSTDATA(shpnt)->data_len)557 558#define SYNCRATE (HOSTDATA(shpnt)->syncrate[CURRENT_SC->device->id])559#define SYNCNEG (HOSTDATA(shpnt)->syncneg[CURRENT_SC->device->id])560 561#define DELAY (HOSTDATA(shpnt)->delay)562#define EXT_TRANS (HOSTDATA(shpnt)->ext_trans)563#define TC1550 (HOSTDATA(shpnt)->tc1550)564#define RECONNECT (HOSTDATA(shpnt)->reconnect)565#define PARITY (HOSTDATA(shpnt)->parity)566#define SYNCHRONOUS (HOSTDATA(shpnt)->synchronous)567 568#define HOSTIOPORT0 (HOSTDATA(shpnt)->io_port0)569#define HOSTIOPORT1 (HOSTDATA(shpnt)->io_port1)570 571#define SCDATA(SCpnt) ((struct aha152x_scdata *) (SCpnt)->host_scribble)572#define SCNEXT(SCpnt) SCDATA(SCpnt)->next573#define SCSEM(SCpnt) SCDATA(SCpnt)->done574 575#define SG_ADDRESS(buffer) ((char *) sg_virt((buffer)))576 577/* state handling */578static void seldi_run(struct Scsi_Host *shpnt);579static void seldo_run(struct Scsi_Host *shpnt);580static void selto_run(struct Scsi_Host *shpnt);581static void busfree_run(struct Scsi_Host *shpnt);582 583static void msgo_init(struct Scsi_Host *shpnt);584static void msgo_run(struct Scsi_Host *shpnt);585static void msgo_end(struct Scsi_Host *shpnt);586 587static void cmd_init(struct Scsi_Host *shpnt);588static void cmd_run(struct Scsi_Host *shpnt);589static void cmd_end(struct Scsi_Host *shpnt);590 591static void datai_init(struct Scsi_Host *shpnt);592static void datai_run(struct Scsi_Host *shpnt);593static void datai_end(struct Scsi_Host *shpnt);594 595static void datao_init(struct Scsi_Host *shpnt);596static void datao_run(struct Scsi_Host *shpnt);597static void datao_end(struct Scsi_Host *shpnt);598 599static void status_run(struct Scsi_Host *shpnt);600 601static void msgi_run(struct Scsi_Host *shpnt);602static void msgi_end(struct Scsi_Host *shpnt);603 604static void parerr_run(struct Scsi_Host *shpnt);605static void rsti_run(struct Scsi_Host *shpnt);606 607static void is_complete(struct Scsi_Host *shpnt);608 609/*610 * driver states611 *612 */613static struct {614 char *name;615 void (*init)(struct Scsi_Host *);616 void (*run)(struct Scsi_Host *);617 void (*end)(struct Scsi_Host *);618 int spio;619} states[] = {620 { "idle", NULL, NULL, NULL, 0},621 { "unknown", NULL, NULL, NULL, 0},622 { "seldo", NULL, seldo_run, NULL, 0},623 { "seldi", NULL, seldi_run, NULL, 0},624 { "selto", NULL, selto_run, NULL, 0},625 { "busfree", NULL, busfree_run, NULL, 0},626 { "msgo", msgo_init, msgo_run, msgo_end, 1},627 { "cmd", cmd_init, cmd_run, cmd_end, 1},628 { "msgi", NULL, msgi_run, msgi_end, 1},629 { "status", NULL, status_run, NULL, 1},630 { "datai", datai_init, datai_run, datai_end, 0},631 { "datao", datao_init, datao_run, datao_end, 0},632 { "parerr", NULL, parerr_run, NULL, 0},633 { "rsti", NULL, rsti_run, NULL, 0},634};635 636/* setup & interrupt */637static irqreturn_t intr(int irq, void *dev_id);638static void reset_ports(struct Scsi_Host *shpnt);639static void aha152x_error(struct Scsi_Host *shpnt, char *msg);640static void done(struct Scsi_Host *shpnt, unsigned char status_byte,641 unsigned char host_byte);642 643/* diagnostics */644static void show_command(struct scsi_cmnd * ptr);645static void show_queues(struct Scsi_Host *shpnt);646static void disp_enintr(struct Scsi_Host *shpnt);647 648 649/*650 * queue services:651 *652 */653static inline void append_SC(struct scsi_cmnd **SC, struct scsi_cmnd *new_SC)654{655 struct scsi_cmnd *end;656 657 SCNEXT(new_SC) = NULL;658 if (!*SC)659 *SC = new_SC;660 else {661 for (end = *SC; SCNEXT(end); end = SCNEXT(end))662 ;663 SCNEXT(end) = new_SC;664 }665}666 667static inline struct scsi_cmnd *remove_first_SC(struct scsi_cmnd ** SC)668{669 struct scsi_cmnd *ptr;670 671 ptr = *SC;672 if (ptr) {673 *SC = SCNEXT(*SC);674 SCNEXT(ptr)=NULL;675 }676 return ptr;677}678 679static inline struct scsi_cmnd *remove_lun_SC(struct scsi_cmnd ** SC,680 int target, int lun)681{682 struct scsi_cmnd *ptr, *prev;683 684 for (ptr = *SC, prev = NULL;685 ptr && ((ptr->device->id != target) || (ptr->device->lun != lun));686 prev = ptr, ptr = SCNEXT(ptr))687 ;688 689 if (ptr) {690 if (prev)691 SCNEXT(prev) = SCNEXT(ptr);692 else693 *SC = SCNEXT(ptr);694 695 SCNEXT(ptr)=NULL;696 }697 698 return ptr;699}700 701static inline struct scsi_cmnd *remove_SC(struct scsi_cmnd **SC,702 struct scsi_cmnd *SCp)703{704 struct scsi_cmnd *ptr, *prev;705 706 for (ptr = *SC, prev = NULL;707 ptr && SCp!=ptr;708 prev = ptr, ptr = SCNEXT(ptr))709 ;710 711 if (ptr) {712 if (prev)713 SCNEXT(prev) = SCNEXT(ptr);714 else715 *SC = SCNEXT(ptr);716 717 SCNEXT(ptr)=NULL;718 }719 720 return ptr;721}722 723static irqreturn_t swintr(int irqno, void *dev_id)724{725 struct Scsi_Host *shpnt = dev_id;726 727 HOSTDATA(shpnt)->swint++;728 729 SETPORT(DMACNTRL0, INTEN);730 return IRQ_HANDLED;731}732 733struct Scsi_Host *aha152x_probe_one(struct aha152x_setup *setup)734{735 struct Scsi_Host *shpnt;736 737 shpnt = scsi_host_alloc(&aha152x_driver_template, sizeof(struct aha152x_hostdata));738 if (!shpnt) {739 printk(KERN_ERR "aha152x: scsi_host_alloc failed\n");740 return NULL;741 }742 743 memset(HOSTDATA(shpnt), 0, sizeof *HOSTDATA(shpnt));744 INIT_LIST_HEAD(&HOSTDATA(shpnt)->host_list);745 746 /* need to have host registered before triggering any interrupt */747 list_add_tail(&HOSTDATA(shpnt)->host_list, &aha152x_host_list);748 749 shpnt->no_highmem = true;750 shpnt->io_port = setup->io_port;751 shpnt->n_io_port = IO_RANGE;752 shpnt->irq = setup->irq;753 754 if (!setup->tc1550) {755 HOSTIOPORT0 = setup->io_port;756 HOSTIOPORT1 = setup->io_port;757 } else {758 HOSTIOPORT0 = setup->io_port+0x10;759 HOSTIOPORT1 = setup->io_port-0x10;760 }761 762 spin_lock_init(&QLOCK);763 RECONNECT = setup->reconnect;764 SYNCHRONOUS = setup->synchronous;765 PARITY = setup->parity;766 DELAY = setup->delay;767 EXT_TRANS = setup->ext_trans;768 769 SETPORT(SCSIID, setup->scsiid << 4);770 shpnt->this_id = setup->scsiid;771 772 if (setup->reconnect)773 shpnt->can_queue = AHA152X_MAXQUEUE;774 775 /* RESET OUT */776 printk("aha152x: resetting bus...\n");777 SETPORT(SCSISEQ, SCSIRSTO);778 mdelay(256);779 SETPORT(SCSISEQ, 0);780 mdelay(DELAY);781 782 reset_ports(shpnt);783 784 printk(KERN_INFO785 "aha152x%d%s: "786 "vital data: rev=%x, "787 "io=0x%03lx (0x%03lx/0x%03lx), "788 "irq=%d, "789 "scsiid=%d, "790 "reconnect=%s, "791 "parity=%s, "792 "synchronous=%s, "793 "delay=%d, "794 "extended translation=%s\n",795 shpnt->host_no, setup->tc1550 ? " (tc1550 mode)" : "",796 GETPORT(REV) & 0x7,797 shpnt->io_port, HOSTIOPORT0, HOSTIOPORT1,798 shpnt->irq,799 shpnt->this_id,800 RECONNECT ? "enabled" : "disabled",801 PARITY ? "enabled" : "disabled",802 SYNCHRONOUS ? "enabled" : "disabled",803 DELAY,804 EXT_TRANS ? "enabled" : "disabled");805 806 /* not expecting any interrupts */807 SETPORT(SIMODE0, 0);808 SETPORT(SIMODE1, 0);809 810 if (request_irq(shpnt->irq, swintr, IRQF_SHARED, "aha152x", shpnt)) {811 printk(KERN_ERR "aha152x%d: irq %d busy.\n", shpnt->host_no, shpnt->irq);812 goto out_host_put;813 }814 815 HOSTDATA(shpnt)->swint = 0;816 817 printk(KERN_INFO "aha152x%d: trying software interrupt, ", shpnt->host_no);818 819 mb();820 SETPORT(DMACNTRL0, SWINT|INTEN);821 mdelay(1000);822 free_irq(shpnt->irq, shpnt);823 824 if (!HOSTDATA(shpnt)->swint) {825 if (TESTHI(DMASTAT, INTSTAT)) {826 printk("lost.\n");827 } else {828 printk("failed.\n");829 }830 831 SETPORT(DMACNTRL0, INTEN);832 833 printk(KERN_ERR "aha152x%d: irq %d possibly wrong. "834 "Please verify.\n", shpnt->host_no, shpnt->irq);835 goto out_host_put;836 }837 printk("ok.\n");838 839 840 /* clear interrupts */841 SETPORT(SSTAT0, 0x7f);842 SETPORT(SSTAT1, 0xef);843 844 if (request_irq(shpnt->irq, intr, IRQF_SHARED, "aha152x", shpnt)) {845 printk(KERN_ERR "aha152x%d: failed to reassign irq %d.\n", shpnt->host_no, shpnt->irq);846 goto out_host_put;847 }848 849 if( scsi_add_host(shpnt, NULL) ) {850 free_irq(shpnt->irq, shpnt);851 printk(KERN_ERR "aha152x%d: failed to add host.\n", shpnt->host_no);852 goto out_host_put;853 }854 855 scsi_scan_host(shpnt);856 857 return shpnt;858 859out_host_put:860 list_del(&HOSTDATA(shpnt)->host_list);861 scsi_host_put(shpnt);862 863 return NULL;864}865 866void aha152x_release(struct Scsi_Host *shpnt)867{868 if (!shpnt)869 return;870 871 scsi_remove_host(shpnt);872 if (shpnt->irq)873 free_irq(shpnt->irq, shpnt);874 875#if !defined(AHA152X_PCMCIA)876 if (shpnt->io_port)877 release_region(shpnt->io_port, IO_RANGE);878#endif879 880#ifdef __ISAPNP__881 if (HOSTDATA(shpnt)->pnpdev)882 pnp_device_detach(HOSTDATA(shpnt)->pnpdev);883#endif884 885 list_del(&HOSTDATA(shpnt)->host_list);886 scsi_host_put(shpnt);887}888 889 890/*891 * setup controller to generate interrupts depending892 * on current state (lock has to be acquired)893 *894 */895static int setup_expected_interrupts(struct Scsi_Host *shpnt)896{897 if(CURRENT_SC) {898 struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);899 900 acp->phase |= 1 << 16;901 902 if (acp->phase & selecting) {903 SETPORT(SSTAT1, SELTO);904 SETPORT(SIMODE0, ENSELDO | (DISCONNECTED_SC ? ENSELDI : 0));905 SETPORT(SIMODE1, ENSELTIMO);906 } else {907 SETPORT(SIMODE0, (acp->phase & spiordy) ? ENSPIORDY : 0);908 SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE);909 }910 } else if(STATE==seldi) {911 SETPORT(SIMODE0, 0);912 SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE);913 } else {914 SETPORT(SIMODE0, DISCONNECTED_SC ? ENSELDI : 0);915 SETPORT(SIMODE1, ENSCSIRST | ( (ISSUE_SC||DONE_SC) ? ENBUSFREE : 0));916 }917 918 if(!HOSTDATA(shpnt)->in_intr)919 SETBITS(DMACNTRL0, INTEN);920 921 return TESTHI(DMASTAT, INTSTAT);922}923 924 925/*926 * Queue a command and setup interrupts for a free bus.927 */928static int aha152x_internal_queue(struct scsi_cmnd *SCpnt,929 struct completion *complete, int phase)930{931 struct aha152x_cmd_priv *acp = aha152x_priv(SCpnt);932 struct Scsi_Host *shpnt = SCpnt->device->host;933 unsigned long flags;934 935 acp->phase = not_issued | phase;936 acp->status = 0x1; /* Illegal status by SCSI standard */937 acp->message = 0;938 acp->sent_command = 0;939 940 if (acp->phase & (resetting | check_condition)) {941 if (!SCpnt->host_scribble || SCSEM(SCpnt) || SCNEXT(SCpnt)) {942 scmd_printk(KERN_ERR, SCpnt, "cannot reuse command\n");943 return FAILED;944 }945 } else {946 SCpnt->host_scribble = kmalloc(sizeof(struct aha152x_scdata), GFP_ATOMIC);947 if(!SCpnt->host_scribble) {948 scmd_printk(KERN_ERR, SCpnt, "allocation failed\n");949 return FAILED;950 }951 }952 953 SCNEXT(SCpnt) = NULL;954 SCSEM(SCpnt) = complete;955 956 /* setup scratch area957 SCp.ptr : buffer pointer958 SCp.this_residual : buffer length959 SCp.buffer : next buffer960 SCp.phase : current state of the command */961 962 if ((phase & resetting) || !scsi_sglist(SCpnt)) {963 acp->ptr = NULL;964 acp->this_residual = 0;965 scsi_set_resid(SCpnt, 0);966 acp->buffer = NULL;967 } else {968 scsi_set_resid(SCpnt, scsi_bufflen(SCpnt));969 acp->buffer = scsi_sglist(SCpnt);970 acp->ptr = SG_ADDRESS(acp->buffer);971 acp->this_residual = acp->buffer->length;972 }973 974 DO_LOCK(flags);975 976#if defined(AHA152X_STAT)977 HOSTDATA(shpnt)->total_commands++;978#endif979 980 /* Turn led on, when this is the first command. */981 HOSTDATA(shpnt)->commands++;982 if (HOSTDATA(shpnt)->commands==1)983 SETPORT(PORTA, 1);984 985 append_SC(&ISSUE_SC, SCpnt);986 987 if(!HOSTDATA(shpnt)->in_intr)988 setup_expected_interrupts(shpnt);989 990 DO_UNLOCK(flags);991 992 return 0;993}994 995/*996 * queue a command997 *998 */999static int aha152x_queue_lck(struct scsi_cmnd *SCpnt)1000{1001 return aha152x_internal_queue(SCpnt, NULL, 0);1002}1003 1004static DEF_SCSI_QCMD(aha152x_queue)1005 1006 1007/*1008 *1009 */1010static void reset_done(struct scsi_cmnd *SCpnt)1011{1012 if(SCSEM(SCpnt)) {1013 complete(SCSEM(SCpnt));1014 } else {1015 printk(KERN_ERR "aha152x: reset_done w/o completion\n");1016 }1017}1018 1019static void aha152x_scsi_done(struct scsi_cmnd *SCpnt)1020{1021 if (aha152x_priv(SCpnt)->phase & resetting)1022 reset_done(SCpnt);1023 else1024 scsi_done(SCpnt);1025}1026 1027/*1028 * Abort a command1029 *1030 */1031static int aha152x_abort(struct scsi_cmnd *SCpnt)1032{1033 struct Scsi_Host *shpnt = SCpnt->device->host;1034 struct scsi_cmnd *ptr;1035 unsigned long flags;1036 1037 DO_LOCK(flags);1038 1039 ptr=remove_SC(&ISSUE_SC, SCpnt);1040 1041 if(ptr) {1042 HOSTDATA(shpnt)->commands--;1043 if (!HOSTDATA(shpnt)->commands)1044 SETPORT(PORTA, 0);1045 DO_UNLOCK(flags);1046 1047 kfree(SCpnt->host_scribble);1048 SCpnt->host_scribble=NULL;1049 1050 return SUCCESS;1051 }1052 1053 DO_UNLOCK(flags);1054 1055 /*1056 * FIXME:1057 * for current command: queue ABORT for message out and raise ATN1058 * for disconnected command: pseudo SC with ABORT message or ABORT on reselection?1059 *1060 */1061 1062 scmd_printk(KERN_ERR, SCpnt,1063 "cannot abort running or disconnected command\n");1064 1065 return FAILED;1066}1067 1068/*1069 * Reset a device1070 *1071 */1072static int aha152x_device_reset(struct scsi_cmnd * SCpnt)1073{1074 struct Scsi_Host *shpnt = SCpnt->device->host;1075 DECLARE_COMPLETION_ONSTACK(done);1076 int ret, issued, disconnected;1077 unsigned char old_cmd_len = SCpnt->cmd_len;1078 unsigned long flags;1079 unsigned long timeleft;1080 1081 if(CURRENT_SC==SCpnt) {1082 scmd_printk(KERN_ERR, SCpnt, "cannot reset current device\n");1083 return FAILED;1084 }1085 1086 DO_LOCK(flags);1087 issued = remove_SC(&ISSUE_SC, SCpnt) == NULL;1088 disconnected = issued && remove_SC(&DISCONNECTED_SC, SCpnt);1089 DO_UNLOCK(flags);1090 1091 SCpnt->cmd_len = 0;1092 1093 aha152x_internal_queue(SCpnt, &done, resetting);1094 1095 timeleft = wait_for_completion_timeout(&done, 100*HZ);1096 if (!timeleft) {1097 /* remove command from issue queue */1098 DO_LOCK(flags);1099 remove_SC(&ISSUE_SC, SCpnt);1100 DO_UNLOCK(flags);1101 }1102 1103 SCpnt->cmd_len = old_cmd_len;1104 1105 DO_LOCK(flags);1106 1107 if (aha152x_priv(SCpnt)->phase & resetted) {1108 HOSTDATA(shpnt)->commands--;1109 if (!HOSTDATA(shpnt)->commands)1110 SETPORT(PORTA, 0);1111 kfree(SCpnt->host_scribble);1112 SCpnt->host_scribble=NULL;1113 1114 ret = SUCCESS;1115 } else {1116 /* requeue */1117 if(!issued) {1118 append_SC(&ISSUE_SC, SCpnt);1119 } else if(disconnected) {1120 append_SC(&DISCONNECTED_SC, SCpnt);1121 }1122 1123 ret = FAILED;1124 }1125 1126 DO_UNLOCK(flags);1127 return ret;1128}1129 1130static void free_hard_reset_SCs(struct Scsi_Host *shpnt,1131 struct scsi_cmnd **SCs)1132{1133 struct scsi_cmnd *ptr;1134 1135 ptr=*SCs;1136 while(ptr) {1137 struct scsi_cmnd *next;1138 1139 if(SCDATA(ptr)) {1140 next = SCNEXT(ptr);1141 } else {1142 scmd_printk(KERN_DEBUG, ptr,1143 "queue corrupted at %p\n", ptr);1144 next = NULL;1145 }1146 1147 if (!ptr->device->soft_reset) {1148 remove_SC(SCs, ptr);1149 HOSTDATA(shpnt)->commands--;1150 kfree(ptr->host_scribble);1151 ptr->host_scribble=NULL;1152 }1153 1154 ptr = next;1155 }1156}1157 1158/*1159 * Reset the bus1160 *1161 * AIC-6260 has a hard reset (MRST signal), but apparently1162 * one cannot trigger it via software. So live with1163 * a soft reset; no-one seemed to have cared.1164 */1165static int aha152x_bus_reset_host(struct Scsi_Host *shpnt)1166{1167 unsigned long flags;1168 1169 DO_LOCK(flags);1170 1171 free_hard_reset_SCs(shpnt, &ISSUE_SC);1172 free_hard_reset_SCs(shpnt, &DISCONNECTED_SC);1173 1174 SETPORT(SCSISEQ, SCSIRSTO);1175 mdelay(256);1176 SETPORT(SCSISEQ, 0);1177 mdelay(DELAY);1178 1179 setup_expected_interrupts(shpnt);1180 if(HOSTDATA(shpnt)->commands==0)1181 SETPORT(PORTA, 0);1182 1183 DO_UNLOCK(flags);1184 1185 return SUCCESS;1186}1187 1188/*1189 * Reset the bus1190 *1191 */1192static int aha152x_bus_reset(struct scsi_cmnd *SCpnt)1193{1194 return aha152x_bus_reset_host(SCpnt->device->host);1195}1196 1197/*1198 * Restore default values to the AIC-6260 registers and reset the fifos1199 *1200 */1201static void reset_ports(struct Scsi_Host *shpnt)1202{1203 unsigned long flags;1204 1205 /* disable interrupts */1206 SETPORT(DMACNTRL0, RSTFIFO);1207 1208 SETPORT(SCSISEQ, 0);1209 1210 SETPORT(SXFRCTL1, 0);1211 SETPORT(SCSISIG, 0);1212 SETRATE(0);1213 1214 /* clear all interrupt conditions */1215 SETPORT(SSTAT0, 0x7f);1216 SETPORT(SSTAT1, 0xef);1217 1218 SETPORT(SSTAT4, SYNCERR | FWERR | FRERR);1219 1220 SETPORT(DMACNTRL0, 0);1221 SETPORT(DMACNTRL1, 0);1222 1223 SETPORT(BRSTCNTRL, 0xf1);1224 1225 /* clear SCSI fifos and transfer count */1226 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);1227 SETPORT(SXFRCTL0, CH1);1228 1229 DO_LOCK(flags);1230 setup_expected_interrupts(shpnt);1231 DO_UNLOCK(flags);1232}1233 1234/*1235 * Reset the host (bus and controller)1236 *1237 */1238int aha152x_host_reset_host(struct Scsi_Host *shpnt)1239{1240 aha152x_bus_reset_host(shpnt);1241 reset_ports(shpnt);1242 1243 return SUCCESS;1244}1245 1246/*1247 * Return the "logical geometry"1248 *1249 */1250static int aha152x_biosparam(struct scsi_device *sdev, struct block_device *bdev,1251 sector_t capacity, int *info_array)1252{1253 struct Scsi_Host *shpnt = sdev->host;1254 1255 /* try default translation */1256 info_array[0] = 64;1257 info_array[1] = 32;1258 info_array[2] = (unsigned long)capacity / (64 * 32);1259 1260 /* for disks >1GB do some guessing */1261 if (info_array[2] >= 1024) {1262 int info[3];1263 1264 /* try to figure out the geometry from the partition table */1265 if (scsicam_bios_param(bdev, capacity, info) < 0 ||1266 !((info[0] == 64 && info[1] == 32) || (info[0] == 255 && info[1] == 63))) {1267 if (EXT_TRANS) {1268 printk(KERN_NOTICE1269 "aha152x: unable to verify geometry for disk with >1GB.\n"1270 " using extended translation.\n");1271 info_array[0] = 255;1272 info_array[1] = 63;1273 info_array[2] = (unsigned long)capacity / (255 * 63);1274 } else {1275 printk(KERN_NOTICE1276 "aha152x: unable to verify geometry for disk with >1GB.\n"1277 " Using default translation. Please verify yourself.\n"1278 " Perhaps you need to enable extended translation in the driver.\n"1279 " See Documentation/scsi/aha152x.rst for details.\n");1280 }1281 } else {1282 info_array[0] = info[0];1283 info_array[1] = info[1];1284 info_array[2] = info[2];1285 1286 if (info[0] == 255 && !EXT_TRANS) {1287 printk(KERN_NOTICE1288 "aha152x: current partition table is using extended translation.\n"1289 " using it also, although it's not explicitly enabled.\n");1290 }1291 }1292 }1293 1294 return 0;1295}1296 1297/*1298 * Internal done function1299 *1300 */1301static void done(struct Scsi_Host *shpnt, unsigned char status_byte,1302 unsigned char host_byte)1303{1304 if (CURRENT_SC) {1305 if(DONE_SC)1306 scmd_printk(KERN_ERR, CURRENT_SC,1307 "there's already a completed command %p "1308 "- will cause abort\n", DONE_SC);1309 1310 DONE_SC = CURRENT_SC;1311 CURRENT_SC = NULL;1312 set_status_byte(DONE_SC, status_byte);1313 set_host_byte(DONE_SC, host_byte);1314 } else1315 printk(KERN_ERR "aha152x: done() called outside of command\n");1316}1317 1318static struct work_struct aha152x_tq;1319 1320/*1321 * Run service completions on the card with interrupts enabled.1322 *1323 */1324static void run(struct work_struct *work)1325{1326 struct aha152x_hostdata *hd;1327 1328 list_for_each_entry(hd, &aha152x_host_list, host_list) {1329 struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata);1330 1331 is_complete(shost);1332 }1333}1334 1335/*1336 * Interrupt handler1337 *1338 */1339static irqreturn_t intr(int irqno, void *dev_id)1340{1341 struct Scsi_Host *shpnt = dev_id;1342 unsigned long flags;1343 unsigned char rev, dmacntrl0;1344 1345 /*1346 * Read a couple of registers that are known to not be all 1's. If1347 * we read all 1's (-1), that means that either:1348 *1349 * a. The host adapter chip has gone bad, and we cannot control it,1350 * OR1351 * b. The host adapter is a PCMCIA card that has been ejected1352 *1353 * In either case, we cannot do anything with the host adapter at1354 * this point in time. So just ignore the interrupt and return.1355 * In the latter case, the interrupt might actually be meant for1356 * someone else sharing this IRQ, and that driver will handle it.1357 */1358 rev = GETPORT(REV);1359 dmacntrl0 = GETPORT(DMACNTRL0);1360 if ((rev == 0xFF) && (dmacntrl0 == 0xFF))1361 return IRQ_NONE;1362 1363 if( TESTLO(DMASTAT, INTSTAT) )1364 return IRQ_NONE;1365 1366 /* no more interrupts from the controller, while we're busy.1367 INTEN is restored by the BH handler */1368 CLRBITS(DMACNTRL0, INTEN);1369 1370 DO_LOCK(flags);1371 if( HOSTDATA(shpnt)->service==0 ) {1372 HOSTDATA(shpnt)->service=1;1373 1374 /* Poke the BH handler */1375 INIT_WORK(&aha152x_tq, run);1376 schedule_work(&aha152x_tq);1377 }1378 DO_UNLOCK(flags);1379 1380 return IRQ_HANDLED;1381}1382 1383/*1384 * busfree phase1385 * - handle completition/disconnection/error of current command1386 * - start selection for next command (if any)1387 */1388static void busfree_run(struct Scsi_Host *shpnt)1389{1390 unsigned long flags;1391#if defined(AHA152X_STAT)1392 int action=0;1393#endif1394 1395 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);1396 SETPORT(SXFRCTL0, CH1);1397 1398 SETPORT(SSTAT1, CLRBUSFREE);1399 1400 if(CURRENT_SC) {1401 struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);1402 1403#if defined(AHA152X_STAT)1404 action++;1405#endif1406 acp->phase &= ~syncneg;1407 1408 if (acp->phase & completed) {1409 /* target sent COMMAND COMPLETE */1410 done(shpnt, acp->status, DID_OK);1411 1412 } else if (acp->phase & aborted) {1413 done(shpnt, acp->status, DID_ABORT);1414 1415 } else if (acp->phase & resetted) {1416 done(shpnt, acp->status, DID_RESET);1417 1418 } else if (acp->phase & disconnected) {1419 /* target sent DISCONNECT */1420#if defined(AHA152X_STAT)1421 HOSTDATA(shpnt)->disconnections++;1422#endif1423 append_SC(&DISCONNECTED_SC, CURRENT_SC);1424 acp->phase |= 1 << 16;1425 CURRENT_SC = NULL;1426 1427 } else {1428 done(shpnt, SAM_STAT_GOOD, DID_ERROR);1429 }1430#if defined(AHA152X_STAT)1431 } else {1432 HOSTDATA(shpnt)->busfree_without_old_command++;1433#endif1434 }1435 1436 DO_LOCK(flags);1437 1438 if(DONE_SC) {1439#if defined(AHA152X_STAT)1440 action++;1441#endif1442 1443 if (aha152x_priv(DONE_SC)->phase & check_condition) {1444 struct scsi_cmnd *cmd = HOSTDATA(shpnt)->done_SC;1445 struct aha152x_scdata *sc = SCDATA(cmd);1446 1447 scsi_eh_restore_cmnd(cmd, &sc->ses);1448 1449 aha152x_priv(cmd)->status = SAM_STAT_CHECK_CONDITION;1450 1451 HOSTDATA(shpnt)->commands--;1452 if (!HOSTDATA(shpnt)->commands)1453 SETPORT(PORTA, 0); /* turn led off */1454 } else if (aha152x_priv(DONE_SC)->status == SAM_STAT_CHECK_CONDITION) {1455#if defined(AHA152X_STAT)1456 HOSTDATA(shpnt)->busfree_with_check_condition++;1457#endif1458 1459 if (!(aha152x_priv(DONE_SC)->phase & not_issued)) {1460 struct aha152x_scdata *sc;1461 struct scsi_cmnd *ptr = DONE_SC;1462 DONE_SC=NULL;1463 1464 sc = SCDATA(ptr);1465 /* It was allocated in aha152x_internal_queue? */1466 BUG_ON(!sc);1467 scsi_eh_prep_cmnd(ptr, &sc->ses, NULL, 0, ~0);1468 1469 DO_UNLOCK(flags);1470 aha152x_internal_queue(ptr, NULL, check_condition);1471 DO_LOCK(flags);1472 }1473 }1474 1475 if (DONE_SC) {1476 struct scsi_cmnd *ptr = DONE_SC;1477 DONE_SC=NULL;1478 1479 /* turn led off, when no commands are in the driver */1480 HOSTDATA(shpnt)->commands--;1481 if (!HOSTDATA(shpnt)->commands)1482 SETPORT(PORTA, 0); /* turn led off */1483 1484 if (!(aha152x_priv(ptr)->phase & resetting)) {1485 kfree(ptr->host_scribble);1486 ptr->host_scribble=NULL;1487 }1488 1489 DO_UNLOCK(flags);1490 aha152x_scsi_done(ptr);1491 DO_LOCK(flags);1492 }1493 1494 DONE_SC=NULL;1495#if defined(AHA152X_STAT)1496 } else {1497 HOSTDATA(shpnt)->busfree_without_done_command++;1498#endif1499 }1500 1501 if(ISSUE_SC)1502 CURRENT_SC = remove_first_SC(&ISSUE_SC);1503 1504 DO_UNLOCK(flags);1505 1506 if(CURRENT_SC) {1507 struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);1508 1509#if defined(AHA152X_STAT)1510 action++;1511#endif1512 acp->phase |= selecting;1513 1514 /* clear selection timeout */1515 SETPORT(SSTAT1, SELTO);1516 1517 SETPORT(SCSIID, (shpnt->this_id << OID_) | CURRENT_SC->device->id);1518 SETPORT(SXFRCTL1, (PARITY ? ENSPCHK : 0 ) | ENSTIMER);1519 SETPORT(SCSISEQ, ENSELO | ENAUTOATNO | (DISCONNECTED_SC ? ENRESELI : 0));1520 } else {1521#if defined(AHA152X_STAT)1522 HOSTDATA(shpnt)->busfree_without_new_command++;1523#endif1524 SETPORT(SCSISEQ, DISCONNECTED_SC ? ENRESELI : 0);1525 }1526 1527#if defined(AHA152X_STAT)1528 if(!action)1529 HOSTDATA(shpnt)->busfree_without_any_action++;1530#endif1531}1532 1533/*1534 * Selection done (OUT)1535 * - queue IDENTIFY message and SDTR to selected target for message out1536 * (ATN asserted automagically via ENAUTOATNO in busfree())1537 */1538static void seldo_run(struct Scsi_Host *shpnt)1539{1540 struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);1541 1542 SETPORT(SCSISIG, 0);1543 SETPORT(SSTAT1, CLRBUSFREE);1544 SETPORT(SSTAT1, CLRPHASECHG);1545 1546 acp->phase &= ~(selecting | not_issued);1547 1548 SETPORT(SCSISEQ, 0);1549 1550 if (TESTLO(SSTAT0, SELDO)) {1551 scmd_printk(KERN_ERR, CURRENT_SC,1552 "aha152x: passing bus free condition\n");1553 done(shpnt, SAM_STAT_GOOD, DID_NO_CONNECT);1554 return;1555 }1556 1557 SETPORT(SSTAT0, CLRSELDO);1558 1559 ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun));1560 1561 if (acp->phase & aborting) {1562 ADDMSGO(ABORT);1563 } else if (acp->phase & resetting) {1564 ADDMSGO(BUS_DEVICE_RESET);1565 } else if (SYNCNEG==0 && SYNCHRONOUS) {1566 acp->phase |= syncneg;1567 MSGOLEN += spi_populate_sync_msg(&MSGO(MSGOLEN), 50, 8);1568 SYNCNEG=1; /* negotiation in progress */1569 }1570 1571 SETRATE(SYNCRATE);1572}1573 1574/*1575 * Selection timeout1576 * - return command to mid-level with failure cause1577 *1578 */1579static void selto_run(struct Scsi_Host *shpnt)1580{1581 struct aha152x_cmd_priv *acp;1582 1583 SETPORT(SCSISEQ, 0);1584 SETPORT(SSTAT1, CLRSELTIMO);1585 1586 if (!CURRENT_SC)1587 return;1588 1589 acp = aha152x_priv(CURRENT_SC);1590 acp->phase &= ~selecting;1591 1592 if (acp->phase & aborted)1593 done(shpnt, SAM_STAT_GOOD, DID_ABORT);1594 else if (TESTLO(SSTAT0, SELINGO))1595 done(shpnt, SAM_STAT_GOOD, DID_BUS_BUSY);1596 else1597 /* ARBITRATION won, but SELECTION failed */1598 done(shpnt, SAM_STAT_GOOD, DID_NO_CONNECT);1599}1600 1601/*1602 * Selection in done1603 * - put current command back to issue queue1604 * (reconnection of a disconnected nexus instead1605 * of successful selection out)1606 *1607 */1608static void seldi_run(struct Scsi_Host *shpnt)1609{1610 int selid;1611 int target;1612 unsigned long flags;1613 1614 SETPORT(SCSISIG, 0);1615 SETPORT(SSTAT0, CLRSELDI);1616 SETPORT(SSTAT1, CLRBUSFREE);1617 SETPORT(SSTAT1, CLRPHASECHG);1618 1619 if(CURRENT_SC) {1620 struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);1621 1622 if (!(acp->phase & not_issued))1623 scmd_printk(KERN_ERR, CURRENT_SC,1624 "command should not have been issued yet\n");1625 1626 DO_LOCK(flags);1627 append_SC(&ISSUE_SC, CURRENT_SC);1628 DO_UNLOCK(flags);1629 1630 CURRENT_SC = NULL;1631 }1632 1633 if (!DISCONNECTED_SC)1634 return;1635 1636 RECONN_TARGET=-1;1637 1638 selid = GETPORT(SELID) & ~(1 << shpnt->this_id);1639 1640 if (selid==0) {1641 shost_printk(KERN_INFO, shpnt,1642 "target id unknown (%02x)\n", selid);1643 return;1644 }1645 1646 for(target=7; !(selid & (1 << target)); target--)1647 ;1648 1649 if(selid & ~(1 << target)) {1650 shost_printk(KERN_INFO, shpnt,1651 "multiple targets reconnected (%02x)\n", selid);1652 }1653 1654 1655 SETPORT(SCSIID, (shpnt->this_id << OID_) | target);1656 SETPORT(SCSISEQ, 0);1657 1658 SETRATE(HOSTDATA(shpnt)->syncrate[target]);1659 1660 RECONN_TARGET=target;1661}1662 1663/*1664 * message in phase1665 * - handle initial message after reconnection to identify1666 * reconnecting nexus1667 * - queue command on DISCONNECTED_SC on DISCONNECT message1668 * - set completed flag on COMMAND COMPLETE1669 * (other completition code moved to busfree_run)1670 * - handle response to SDTR1671 * - clear synchronous transfer agreements on BUS RESET1672 *1673 * FIXME: what about SAVE POINTERS, RESTORE POINTERS?1674 *1675 */1676static void msgi_run(struct Scsi_Host *shpnt)1677{1678 for(;;) {1679 struct aha152x_cmd_priv *acp;1680 int sstat1 = GETPORT(SSTAT1);1681 1682 if(sstat1 & (PHASECHG|PHASEMIS|BUSFREE) || !(sstat1 & REQINIT))1683 return;1684 1685 if (TESTLO(SSTAT0, SPIORDY))1686 return;1687 1688 ADDMSGI(GETPORT(SCSIDAT));1689 1690 if(!CURRENT_SC) {1691 if(LASTSTATE!=seldi) {1692 shost_printk(KERN_ERR, shpnt,1693 "message in w/o current command"1694 " not after reselection\n");1695 }1696 1697 /*1698 * Handle reselection1699 */1700 if(!(MSGI(0) & IDENTIFY_BASE)) {1701 shost_printk(KERN_ERR, shpnt,1702 "target didn't identify after reselection\n");1703 continue;1704 }1705 1706 CURRENT_SC = remove_lun_SC(&DISCONNECTED_SC, RECONN_TARGET, MSGI(0) & 0x3f);1707 1708 if (!CURRENT_SC) {1709 show_queues(shpnt);1710 shost_printk(KERN_ERR, shpnt,1711 "no disconnected command"1712 " for target %d/%d\n",1713 RECONN_TARGET, MSGI(0) & 0x3f);1714 continue;1715 }1716 1717 acp = aha152x_priv(CURRENT_SC);1718 acp->message = MSGI(0);1719 acp->phase &= ~disconnected;1720 1721 MSGILEN=0;1722 1723 /* next message if any */1724 continue;1725 }1726 1727 acp = aha152x_priv(CURRENT_SC);1728 acp->message = MSGI(0);1729 1730 switch (MSGI(0)) {1731 case DISCONNECT:1732 if (!RECONNECT)1733 scmd_printk(KERN_WARNING, CURRENT_SC,1734 "target was not allowed to disconnect\n");1735 1736 acp->phase |= disconnected;1737 break;1738 1739 case COMMAND_COMPLETE:1740 acp->phase |= completed;1741 break;1742 1743 case MESSAGE_REJECT:1744 if (SYNCNEG==1) {1745 scmd_printk(KERN_INFO, CURRENT_SC,1746 "Synchronous Data Transfer Request"1747 " was rejected\n");1748 SYNCNEG=2; /* negotiation completed */1749 } else1750 scmd_printk(KERN_INFO, CURRENT_SC,1751 "inbound message (MESSAGE REJECT)\n");1752 break;1753 1754 case SAVE_POINTERS:1755 break;1756 1757 case RESTORE_POINTERS:1758 break;1759 1760 case EXTENDED_MESSAGE:1761 if(MSGILEN<2 || MSGILEN<MSGI(1)+2) {1762 /* not yet completed */1763 continue;1764 }1765 1766 switch (MSGI(2)) {1767 case EXTENDED_SDTR:1768 {1769 long ticks;1770 1771 if (MSGI(1) != 3) {1772 scmd_printk(KERN_ERR, CURRENT_SC,1773 "SDTR message length!=3\n");1774 break;1775 }1776 1777 if (!HOSTDATA(shpnt)->synchronous)1778 break;1779 1780 printk(INFO_LEAD, CMDINFO(CURRENT_SC));1781 spi_print_msg(&MSGI(0));1782 printk("\n");1783 1784 ticks = (MSGI(3) * 4 + 49) / 50;1785 1786 if (syncneg) {1787 /* negotiation in progress */1788 if (ticks > 9 || MSGI(4) < 1 || MSGI(4) > 8) {1789 ADDMSGO(MESSAGE_REJECT);1790 scmd_printk(KERN_INFO,1791 CURRENT_SC,1792 "received Synchronous Data Transfer Request invalid - rejected\n");1793 break;1794 }1795 1796 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4);1797 } else if (ticks <= 9 && MSGI(4) >= 1) {1798 ADDMSGO(EXTENDED_MESSAGE);1799 ADDMSGO(3);1800 ADDMSGO(EXTENDED_SDTR);1801 if (ticks < 4) {1802 ticks = 4;1803 ADDMSGO(50);1804 } else1805 ADDMSGO(MSGI(3));1806 1807 if (MSGI(4) > 8)1808 MSGI(4) = 8;1809 1810 ADDMSGO(MSGI(4));1811 1812 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4);1813 } else {1814 /* requested SDTR is too slow, do it asynchronously */1815 scmd_printk(KERN_INFO,1816 CURRENT_SC,1817 "Synchronous Data Transfer Request too slow - Rejecting\n");1818 ADDMSGO(MESSAGE_REJECT);1819 }1820 1821 /* negotiation completed */1822 SYNCNEG=2;1823 SETRATE(SYNCRATE);1824 }1825 break;1826 1827 case BUS_DEVICE_RESET:1828 {1829 int i;1830 1831 for(i=0; i<8; i++) {1832 HOSTDATA(shpnt)->syncrate[i]=0;1833 HOSTDATA(shpnt)->syncneg[i]=0;1834 }1835 1836 }1837 break;1838 1839 case EXTENDED_MODIFY_DATA_POINTER:1840 case EXTENDED_EXTENDED_IDENTIFY:1841 case EXTENDED_WDTR:1842 default:1843 ADDMSGO(MESSAGE_REJECT);1844 break;1845 }1846 break;1847 }1848 1849 MSGILEN=0;1850 }1851}1852 1853static void msgi_end(struct Scsi_Host *shpnt)1854{1855 if(MSGILEN>0)1856 scmd_printk(KERN_WARNING, CURRENT_SC,1857 "target left before message completed (%d)\n",1858 MSGILEN);1859 1860 if (MSGOLEN > 0 && !(GETPORT(SSTAT1) & BUSFREE))1861 SETPORT(SCSISIG, P_MSGI | SIG_ATNO);1862}1863 1864/*1865 * message out phase1866 *1867 */1868static void msgo_init(struct Scsi_Host *shpnt)1869{1870 if(MSGOLEN==0) {1871 if ((aha152x_priv(CURRENT_SC)->phase & syncneg) &&1872 SYNCNEG == 2 && SYNCRATE == 0) {1873 ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun));1874 } else {1875 scmd_printk(KERN_INFO, CURRENT_SC,1876 "unexpected MESSAGE OUT phase; rejecting\n");1877 ADDMSGO(MESSAGE_REJECT);1878 }1879 }1880 1881}1882 1883/*1884 * message out phase1885 *1886 */1887static void msgo_run(struct Scsi_Host *shpnt)1888{1889 struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);1890 1891 while(MSGO_I<MSGOLEN) {1892 if (TESTLO(SSTAT0, SPIORDY))1893 return;1894 1895 if (MSGO_I==MSGOLEN-1) {1896 /* Leave MESSAGE OUT after transfer */1897 SETPORT(SSTAT1, CLRATNO);1898 }1899 1900 1901 if (MSGO(MSGO_I) & IDENTIFY_BASE)1902 acp->phase |= identified;1903 1904 if (MSGO(MSGO_I)==ABORT)1905 acp->phase |= aborted;1906 1907 if (MSGO(MSGO_I)==BUS_DEVICE_RESET)1908 acp->phase |= resetted;1909 1910 SETPORT(SCSIDAT, MSGO(MSGO_I++));1911 }1912}1913 1914static void msgo_end(struct Scsi_Host *shpnt)1915{1916 if(MSGO_I<MSGOLEN) {1917 scmd_printk(KERN_ERR, CURRENT_SC,1918 "message sent incompletely (%d/%d)\n",1919 MSGO_I, MSGOLEN);1920 if(SYNCNEG==1) {1921 scmd_printk(KERN_INFO, CURRENT_SC,1922 "Synchronous Data Transfer Request was rejected\n");1923 SYNCNEG=2;1924 }1925 }1926 1927 MSGO_I = 0;1928 MSGOLEN = 0;1929}1930 1931/*1932 * command phase1933 *1934 */1935static void cmd_init(struct Scsi_Host *shpnt)1936{1937 if (aha152x_priv(CURRENT_SC)->sent_command) {1938 scmd_printk(KERN_ERR, CURRENT_SC,1939 "command already sent\n");1940 done(shpnt, SAM_STAT_GOOD, DID_ERROR);1941 return;1942 }1943 1944 CMD_I=0;1945}1946 1947/*1948 * command phase1949 *1950 */1951static void cmd_run(struct Scsi_Host *shpnt)1952{1953 while(CMD_I<CURRENT_SC->cmd_len) {1954 if (TESTLO(SSTAT0, SPIORDY))1955 return;1956 1957 SETPORT(SCSIDAT, CURRENT_SC->cmnd[CMD_I++]);1958 }1959}1960 1961static void cmd_end(struct Scsi_Host *shpnt)1962{1963 if(CMD_I<CURRENT_SC->cmd_len)1964 scmd_printk(KERN_ERR, CURRENT_SC,1965 "command sent incompletely (%d/%d)\n",1966 CMD_I, CURRENT_SC->cmd_len);1967 else1968 aha152x_priv(CURRENT_SC)->sent_command++;1969}1970 1971/*1972 * status phase1973 *1974 */1975static void status_run(struct Scsi_Host *shpnt)1976{1977 if (TESTLO(SSTAT0, SPIORDY))1978 return;1979 1980 aha152x_priv(CURRENT_SC)->status = GETPORT(SCSIDAT);1981 1982}1983 1984/*1985 * data in phase1986 *1987 */1988static void datai_init(struct Scsi_Host *shpnt)1989{1990 SETPORT(DMACNTRL0, RSTFIFO);1991 SETPORT(DMACNTRL0, RSTFIFO|ENDMA);1992 1993 SETPORT(SXFRCTL0, CH1|CLRSTCNT);1994 SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN);1995 1996 SETPORT(SIMODE0, 0);1997 SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE);1998 1999 DATA_LEN=0;2000}2001 2002static void datai_run(struct Scsi_Host *shpnt)2003{2004 struct aha152x_cmd_priv *acp;2005 unsigned long the_time;2006 int fifodata, data_count;2007 2008 /*2009 * loop while the phase persists or the fifos are not empty2010 *2011 */2012 while(TESTLO(DMASTAT, INTSTAT) || TESTLO(DMASTAT, DFIFOEMP) || TESTLO(SSTAT2, SEMPTY)) {2013 /* FIXME: maybe this should be done by setting up2014 * STCNT to trigger ENSWRAP interrupt, instead of2015 * polling for DFIFOFULL2016 */2017 the_time=jiffies + 100*HZ;2018 while(TESTLO(DMASTAT, DFIFOFULL|INTSTAT) && time_before(jiffies,the_time))2019 barrier();2020 2021 if(TESTLO(DMASTAT, DFIFOFULL|INTSTAT)) {2022 scmd_printk(KERN_ERR, CURRENT_SC, "datai timeout\n");2023 break;2024 }2025 2026 if(TESTHI(DMASTAT, DFIFOFULL)) {2027 fifodata = 128;2028 } else {2029 the_time=jiffies + 100*HZ;2030 while(TESTLO(SSTAT2, SEMPTY) && time_before(jiffies,the_time))2031 barrier();2032 2033 if(TESTLO(SSTAT2, SEMPTY)) {2034 scmd_printk(KERN_ERR, CURRENT_SC,2035 "datai sempty timeout");2036 break;2037 }2038 2039 fifodata = GETPORT(FIFOSTAT);2040 }2041 2042 acp = aha152x_priv(CURRENT_SC);2043 if (acp->this_residual > 0) {2044 while (fifodata > 0 && acp->this_residual > 0) {2045 data_count = fifodata > acp->this_residual ?2046 acp->this_residual : fifodata;2047 fifodata -= data_count;2048 2049 if (data_count & 1) {2050 SETPORT(DMACNTRL0, ENDMA|_8BIT);2051 *acp->ptr++ = GETPORT(DATAPORT);2052 acp->this_residual--;2053 DATA_LEN++;2054 SETPORT(DMACNTRL0, ENDMA);2055 }2056 2057 if (data_count > 1) {2058 data_count >>= 1;2059 insw(DATAPORT, acp->ptr, data_count);2060 acp->ptr += 2 * data_count;2061 acp->this_residual -= 2 * data_count;2062 DATA_LEN += 2 * data_count;2063 }2064 2065 if (acp->this_residual == 0 &&2066 !sg_is_last(acp->buffer)) {2067 /* advance to next buffer */2068 acp->buffer = sg_next(acp->buffer);2069 acp->ptr = SG_ADDRESS(acp->buffer);2070 acp->this_residual = acp->buffer->length;2071 }2072 }2073 } else if (fifodata > 0) {2074 scmd_printk(KERN_ERR, CURRENT_SC,2075 "no buffers left for %d(%d) bytes"2076 " (data overrun!?)\n",2077 fifodata, GETPORT(FIFOSTAT));2078 SETPORT(DMACNTRL0, ENDMA|_8BIT);2079 while(fifodata>0) {2080 GETPORT(DATAPORT);2081 fifodata--;2082 DATA_LEN++;2083 }2084 SETPORT(DMACNTRL0, ENDMA|_8BIT);2085 }2086 }2087 2088 if(TESTLO(DMASTAT, INTSTAT) ||2089 TESTLO(DMASTAT, DFIFOEMP) ||2090 TESTLO(SSTAT2, SEMPTY) ||2091 GETPORT(FIFOSTAT)>0) {2092 /*2093 * something went wrong, if there's something left in the fifos2094 * or the phase didn't change2095 */2096 scmd_printk(KERN_ERR, CURRENT_SC,2097 "fifos should be empty and phase should have changed\n");2098 }2099 2100 if(DATA_LEN!=GETSTCNT()) {2101 scmd_printk(KERN_ERR, CURRENT_SC,2102 "manual transfer count differs from automatic "2103 "(count=%d;stcnt=%d;diff=%d;fifostat=%d)",2104 DATA_LEN, GETSTCNT(), GETSTCNT()-DATA_LEN,2105 GETPORT(FIFOSTAT));2106 mdelay(10000);2107 }2108}2109 2110static void datai_end(struct Scsi_Host *shpnt)2111{2112 CMD_INC_RESID(CURRENT_SC, -GETSTCNT());2113 2114 SETPORT(SXFRCTL0, CH1|CLRSTCNT);2115 SETPORT(DMACNTRL0, 0);2116}2117 2118/*2119 * data out phase2120 *2121 */2122static void datao_init(struct Scsi_Host *shpnt)2123{2124 SETPORT(DMACNTRL0, WRITE_READ | RSTFIFO);2125 SETPORT(DMACNTRL0, WRITE_READ | ENDMA);2126 2127 SETPORT(SXFRCTL0, CH1|CLRSTCNT);2128 SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN);2129 2130 SETPORT(SIMODE0, 0);2131 SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE );2132 2133 DATA_LEN = scsi_get_resid(CURRENT_SC);2134}2135 2136static void datao_run(struct Scsi_Host *shpnt)2137{2138 struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);2139 unsigned long the_time;2140 int data_count;2141 2142 /* until phase changes or all data sent */2143 while (TESTLO(DMASTAT, INTSTAT) && acp->this_residual > 0) {2144 data_count = 128;2145 if (data_count > acp->this_residual)2146 data_count = acp->this_residual;2147 2148 if(TESTLO(DMASTAT, DFIFOEMP)) {2149 scmd_printk(KERN_ERR, CURRENT_SC,2150 "datao fifo not empty (%d)",2151 GETPORT(FIFOSTAT));2152 break;2153 }2154 2155 if(data_count & 1) {2156 SETPORT(DMACNTRL0,WRITE_READ|ENDMA|_8BIT);2157 SETPORT(DATAPORT, *acp->ptr++);2158 acp->this_residual--;2159 CMD_INC_RESID(CURRENT_SC, -1);2160 SETPORT(DMACNTRL0,WRITE_READ|ENDMA);2161 }2162 2163 if(data_count > 1) {2164 data_count >>= 1;2165 outsw(DATAPORT, acp->ptr, data_count);2166 acp->ptr += 2 * data_count;2167 acp->this_residual -= 2 * data_count;2168 CMD_INC_RESID(CURRENT_SC, -2 * data_count);2169 }2170 2171 if (acp->this_residual == 0 && !sg_is_last(acp->buffer)) {2172 /* advance to next buffer */2173 acp->buffer = sg_next(acp->buffer);2174 acp->ptr = SG_ADDRESS(acp->buffer);2175 acp->this_residual = acp->buffer->length;2176 }2177 2178 the_time=jiffies + 100*HZ;2179 while(TESTLO(DMASTAT, DFIFOEMP|INTSTAT) && time_before(jiffies,the_time))2180 barrier();2181 2182 if(TESTLO(DMASTAT, DFIFOEMP|INTSTAT)) {2183 scmd_printk(KERN_ERR, CURRENT_SC, "dataout timeout\n");2184 break;2185 }2186 }2187}2188 2189static void datao_end(struct Scsi_Host *shpnt)2190{2191 struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);2192 2193 if(TESTLO(DMASTAT, DFIFOEMP)) {2194 u32 datao_cnt = GETSTCNT();2195 int datao_out = DATA_LEN - scsi_get_resid(CURRENT_SC);2196 int done;2197 struct scatterlist *sg = scsi_sglist(CURRENT_SC);2198 2199 CMD_INC_RESID(CURRENT_SC, datao_out - datao_cnt);2200 2201 done = scsi_bufflen(CURRENT_SC) - scsi_get_resid(CURRENT_SC);2202 /* Locate the first SG entry not yet sent */2203 while (done > 0 && !sg_is_last(sg)) {2204 if (done < sg->length)2205 break;2206 done -= sg->length;2207 sg = sg_next(sg);2208 }2209 2210 acp->buffer = sg;2211 acp->ptr = SG_ADDRESS(acp->buffer) + done;2212 acp->this_residual = acp->buffer->length - done;2213 }2214 2215 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);2216 SETPORT(SXFRCTL0, CH1);2217 2218 SETPORT(DMACNTRL0, 0);2219}2220 2221/*2222 * figure out what state we're in2223 *2224 */2225static int update_state(struct Scsi_Host *shpnt)2226{2227 int dataphase=0;2228 unsigned int stat0 = GETPORT(SSTAT0);2229 unsigned int stat1 = GETPORT(SSTAT1);2230 2231 PREVSTATE = STATE;2232 STATE=unknown;2233 2234 if(stat1 & SCSIRSTI) {2235 STATE=rsti;2236 SETPORT(SCSISEQ,0);2237 SETPORT(SSTAT1,SCSIRSTI);2238 } else if (stat0 & SELDI && PREVSTATE == busfree) {2239 STATE=seldi;2240 } else if (stat0 & SELDO && CURRENT_SC &&2241 (aha152x_priv(CURRENT_SC)->phase & selecting)) {2242 STATE=seldo;2243 } else if(stat1 & SELTO) {2244 STATE=selto;2245 } else if(stat1 & BUSFREE) {2246 STATE=busfree;2247 SETPORT(SSTAT1,BUSFREE);2248 } else if(stat1 & SCSIPERR) {2249 STATE=parerr;2250 SETPORT(SSTAT1,SCSIPERR);2251 } else if(stat1 & REQINIT) {2252 switch(GETPORT(SCSISIG) & P_MASK) {2253 case P_MSGI: STATE=msgi; break;2254 case P_MSGO: STATE=msgo; break;2255 case P_DATAO: STATE=datao; break;2256 case P_DATAI: STATE=datai; break;2257 case P_STATUS: STATE=status; break;2258 case P_CMD: STATE=cmd; break;2259 }2260 dataphase=1;2261 }2262 2263 if((stat0 & SELDI) && STATE!=seldi && !dataphase) {2264 scmd_printk(KERN_INFO, CURRENT_SC, "reselection missed?");2265 }2266 2267 if(STATE!=PREVSTATE) {2268 LASTSTATE=PREVSTATE;2269 }2270 2271 return dataphase;2272}2273 2274/*2275 * handle parity error2276 *2277 * FIXME: in which phase?2278 *2279 */2280static void parerr_run(struct Scsi_Host *shpnt)2281{2282 scmd_printk(KERN_ERR, CURRENT_SC, "parity error\n");2283 done(shpnt, SAM_STAT_GOOD, DID_PARITY);2284}2285 2286/*2287 * handle reset in2288 *2289 */2290static void rsti_run(struct Scsi_Host *shpnt)2291{2292 struct scsi_cmnd *ptr;2293 2294 shost_printk(KERN_NOTICE, shpnt, "scsi reset in\n");2295 2296 ptr=DISCONNECTED_SC;2297 while(ptr) {2298 struct scsi_cmnd *next = SCNEXT(ptr);2299 2300 if (!ptr->device->soft_reset) {2301 remove_SC(&DISCONNECTED_SC, ptr);2302 2303 kfree(ptr->host_scribble);2304 ptr->host_scribble=NULL;2305 2306 set_host_byte(ptr, DID_RESET);2307 aha152x_scsi_done(ptr);2308 }2309 2310 ptr = next;2311 }2312 2313 if(CURRENT_SC && !CURRENT_SC->device->soft_reset)2314 done(shpnt, SAM_STAT_GOOD, DID_RESET);2315}2316 2317 2318/*2319 * bottom-half handler2320 *2321 */2322static void is_complete(struct Scsi_Host *shpnt)2323{2324 int dataphase;2325 unsigned long flags;2326 int pending;2327 2328 if(!shpnt)2329 return;2330 2331 DO_LOCK(flags);2332 2333 if( HOSTDATA(shpnt)->service==0 ) {2334 DO_UNLOCK(flags);2335 return;2336 }2337 2338 HOSTDATA(shpnt)->service = 0;2339 2340 if(HOSTDATA(shpnt)->in_intr) {2341 DO_UNLOCK(flags);2342 /* aha152x_error never returns.. */2343 aha152x_error(shpnt, "bottom-half already running!?");2344 }2345 HOSTDATA(shpnt)->in_intr++;2346 2347 /*2348 * loop while there are interrupt conditions pending2349 *2350 */2351 do {2352 unsigned long start = jiffies;2353 DO_UNLOCK(flags);2354 2355 dataphase=update_state(shpnt);2356 2357 /*2358 * end previous state2359 *2360 */2361 if(PREVSTATE!=STATE && states[PREVSTATE].end)2362 states[PREVSTATE].end(shpnt);2363 2364 /*2365 * disable SPIO mode if previous phase used it2366 * and this one doesn't2367 *2368 */2369 if(states[PREVSTATE].spio && !states[STATE].spio) {2370 SETPORT(SXFRCTL0, CH1);2371 SETPORT(DMACNTRL0, 0);2372 if(CURRENT_SC)2373 aha152x_priv(CURRENT_SC)->phase &= ~spiordy;2374 }2375 2376 /*2377 * accept current dataphase phase2378 *2379 */2380 if(dataphase) {2381 SETPORT(SSTAT0, REQINIT);2382 SETPORT(SCSISIG, GETPORT(SCSISIG) & P_MASK);2383 SETPORT(SSTAT1, PHASECHG);2384 }2385 2386 /*2387 * enable SPIO mode if previous didn't use it2388 * and this one does2389 *2390 */2391 if(!states[PREVSTATE].spio && states[STATE].spio) {2392 SETPORT(DMACNTRL0, 0);2393 SETPORT(SXFRCTL0, CH1|SPIOEN);2394 if(CURRENT_SC)2395 aha152x_priv(CURRENT_SC)->phase |= spiordy;2396 }2397 2398 /*2399 * initialize for new state2400 *2401 */2402 if(PREVSTATE!=STATE && states[STATE].init)2403 states[STATE].init(shpnt);2404 2405 /*2406 * handle current state2407 *2408 */2409 if(states[STATE].run)2410 states[STATE].run(shpnt);2411 else2412 scmd_printk(KERN_ERR, CURRENT_SC,2413 "unexpected state (%x)\n", STATE);2414 2415 /*2416 * setup controller to interrupt on2417 * the next expected condition and2418 * loop if it's already there2419 *2420 */2421 DO_LOCK(flags);2422 pending=setup_expected_interrupts(shpnt);2423#if defined(AHA152X_STAT)2424 HOSTDATA(shpnt)->count[STATE]++;2425 if(PREVSTATE!=STATE)2426 HOSTDATA(shpnt)->count_trans[STATE]++;2427 HOSTDATA(shpnt)->time[STATE] += jiffies-start;2428#endif2429 2430 } while(pending);2431 2432 /*2433 * enable interrupts and leave bottom-half2434 *2435 */2436 HOSTDATA(shpnt)->in_intr--;2437 SETBITS(DMACNTRL0, INTEN);2438 DO_UNLOCK(flags);2439}2440 2441 2442/*2443 * Dump the current driver status and panic2444 */2445static void aha152x_error(struct Scsi_Host *shpnt, char *msg)2446{2447 shost_printk(KERN_EMERG, shpnt, "%s\n", msg);2448 show_queues(shpnt);2449 panic("aha152x panic\n");2450}2451 2452/*2453 * display enabled interrupts2454 */2455static void disp_enintr(struct Scsi_Host *shpnt)2456{2457 int s0, s1;2458 2459 s0 = GETPORT(SIMODE0);2460 s1 = GETPORT(SIMODE1);2461 2462 shost_printk(KERN_DEBUG, shpnt,2463 "enabled interrupts (%s%s%s%s%s%s%s%s%s%s%s%s%s%s)\n",2464 (s0 & ENSELDO) ? "ENSELDO " : "",2465 (s0 & ENSELDI) ? "ENSELDI " : "",2466 (s0 & ENSELINGO) ? "ENSELINGO " : "",2467 (s0 & ENSWRAP) ? "ENSWRAP " : "",2468 (s0 & ENSDONE) ? "ENSDONE " : "",2469 (s0 & ENSPIORDY) ? "ENSPIORDY " : "",2470 (s0 & ENDMADONE) ? "ENDMADONE " : "",2471 (s1 & ENSELTIMO) ? "ENSELTIMO " : "",2472 (s1 & ENATNTARG) ? "ENATNTARG " : "",2473 (s1 & ENPHASEMIS) ? "ENPHASEMIS " : "",2474 (s1 & ENBUSFREE) ? "ENBUSFREE " : "",2475 (s1 & ENSCSIPERR) ? "ENSCSIPERR " : "",2476 (s1 & ENPHASECHG) ? "ENPHASECHG " : "",2477 (s1 & ENREQINIT) ? "ENREQINIT " : "");2478}2479 2480/*2481 * Show the command data of a command2482 */2483static void show_command(struct scsi_cmnd *ptr)2484{2485 const int phase = aha152x_priv(ptr)->phase;2486 2487 scsi_print_command(ptr);2488 scmd_printk(KERN_DEBUG, ptr,2489 "request_bufflen=%d; resid=%d; "2490 "phase |%s%s%s%s%s%s%s%s%s; next=0x%p",2491 scsi_bufflen(ptr), scsi_get_resid(ptr),2492 phase & not_issued ? "not issued|" : "",2493 phase & selecting ? "selecting|" : "",2494 phase & identified ? "identified|" : "",2495 phase & disconnected ? "disconnected|" : "",2496 phase & completed ? "completed|" : "",2497 phase & spiordy ? "spiordy|" : "",2498 phase & syncneg ? "syncneg|" : "",2499 phase & aborted ? "aborted|" : "",2500 phase & resetted ? "resetted|" : "",2501 SCDATA(ptr) ? SCNEXT(ptr) : NULL);2502}2503 2504/*2505 * Dump the queued data2506 */2507static void show_queues(struct Scsi_Host *shpnt)2508{2509 struct scsi_cmnd *ptr;2510 unsigned long flags;2511 2512 DO_LOCK(flags);2513 printk(KERN_DEBUG "\nqueue status:\nissue_SC:\n");2514 for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr))2515 show_command(ptr);2516 DO_UNLOCK(flags);2517 2518 printk(KERN_DEBUG "current_SC:\n");2519 if (CURRENT_SC)2520 show_command(CURRENT_SC);2521 else2522 printk(KERN_DEBUG "none\n");2523 2524 printk(KERN_DEBUG "disconnected_SC:\n");2525 for (ptr = DISCONNECTED_SC; ptr; ptr = SCDATA(ptr) ? SCNEXT(ptr) : NULL)2526 show_command(ptr);2527 2528 disp_enintr(shpnt);2529}2530 2531static void get_command(struct seq_file *m, struct scsi_cmnd * ptr)2532{2533 struct aha152x_cmd_priv *acp = aha152x_priv(ptr);2534 const int phase = acp->phase;2535 int i;2536 2537 seq_printf(m, "%p: target=%d; lun=%d; cmnd=( ",2538 ptr, ptr->device->id, (u8)ptr->device->lun);2539 2540 for (i = 0; i < COMMAND_SIZE(ptr->cmnd[0]); i++)2541 seq_printf(m, "0x%02x ", ptr->cmnd[i]);2542 2543 seq_printf(m, "); resid=%d; residual=%d; buffers=%d; phase |",2544 scsi_get_resid(ptr), acp->this_residual,2545 sg_nents(acp->buffer) - 1);2546 2547 if (phase & not_issued)2548 seq_puts(m, "not issued|");2549 if (phase & selecting)2550 seq_puts(m, "selecting|");2551 if (phase & disconnected)2552 seq_puts(m, "disconnected|");2553 if (phase & aborted)2554 seq_puts(m, "aborted|");2555 if (phase & identified)2556 seq_puts(m, "identified|");2557 if (phase & completed)2558 seq_puts(m, "completed|");2559 if (phase & spiordy)2560 seq_puts(m, "spiordy|");2561 if (phase & syncneg)2562 seq_puts(m, "syncneg|");2563 seq_printf(m, "; next=0x%p\n", SCNEXT(ptr));2564}2565 2566static void get_ports(struct seq_file *m, struct Scsi_Host *shpnt)2567{2568 int s;2569 2570 seq_printf(m, "\n%s: %s(%s) ", CURRENT_SC ? "on bus" : "waiting", states[STATE].name, states[PREVSTATE].name);2571 2572 s = GETPORT(SCSISEQ);2573 seq_puts(m, "SCSISEQ( ");2574 if (s & TEMODEO)2575 seq_puts(m, "TARGET MODE ");2576 if (s & ENSELO)2577 seq_puts(m, "SELO ");2578 if (s & ENSELI)2579 seq_puts(m, "SELI ");2580 if (s & ENRESELI)2581 seq_puts(m, "RESELI ");2582 if (s & ENAUTOATNO)2583 seq_puts(m, "AUTOATNO ");2584 if (s & ENAUTOATNI)2585 seq_puts(m, "AUTOATNI ");2586 if (s & ENAUTOATNP)2587 seq_puts(m, "AUTOATNP ");2588 if (s & SCSIRSTO)2589 seq_puts(m, "SCSIRSTO ");2590 seq_puts(m, ");");2591 2592 seq_puts(m, " SCSISIG(");2593 s = GETPORT(SCSISIG);2594 switch (s & P_MASK) {2595 case P_DATAO:2596 seq_puts(m, "DATA OUT");2597 break;2598 case P_DATAI:2599 seq_puts(m, "DATA IN");2600 break;2601 case P_CMD:2602 seq_puts(m, "COMMAND");2603 break;2604 case P_STATUS:2605 seq_puts(m, "STATUS");2606 break;2607 case P_MSGO:2608 seq_puts(m, "MESSAGE OUT");2609 break;2610 case P_MSGI:2611 seq_puts(m, "MESSAGE IN");2612 break;2613 default:2614 seq_puts(m, "*invalid*");2615 break;2616 }2617 2618 seq_puts(m, "); ");2619 2620 seq_printf(m, "INTSTAT (%s); ", TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo");2621 2622 seq_puts(m, "SSTAT( ");2623 s = GETPORT(SSTAT0);2624 if (s & TARGET)2625 seq_puts(m, "TARGET ");2626 if (s & SELDO)2627 seq_puts(m, "SELDO ");2628 if (s & SELDI)2629 seq_puts(m, "SELDI ");2630 if (s & SELINGO)2631 seq_puts(m, "SELINGO ");2632 if (s & SWRAP)2633 seq_puts(m, "SWRAP ");2634 if (s & SDONE)2635 seq_puts(m, "SDONE ");2636 if (s & SPIORDY)2637 seq_puts(m, "SPIORDY ");2638 if (s & DMADONE)2639 seq_puts(m, "DMADONE ");2640 2641 s = GETPORT(SSTAT1);2642 if (s & SELTO)2643 seq_puts(m, "SELTO ");2644 if (s & ATNTARG)2645 seq_puts(m, "ATNTARG ");2646 if (s & SCSIRSTI)2647 seq_puts(m, "SCSIRSTI ");2648 if (s & PHASEMIS)2649 seq_puts(m, "PHASEMIS ");2650 if (s & BUSFREE)2651 seq_puts(m, "BUSFREE ");2652 if (s & SCSIPERR)2653 seq_puts(m, "SCSIPERR ");2654 if (s & PHASECHG)2655 seq_puts(m, "PHASECHG ");2656 if (s & REQINIT)2657 seq_puts(m, "REQINIT ");2658 seq_puts(m, "); ");2659 2660 2661 seq_puts(m, "SSTAT( ");2662 2663 s = GETPORT(SSTAT0) & GETPORT(SIMODE0);2664 2665 if (s & TARGET)2666 seq_puts(m, "TARGET ");2667 if (s & SELDO)2668 seq_puts(m, "SELDO ");2669 if (s & SELDI)2670 seq_puts(m, "SELDI ");2671 if (s & SELINGO)2672 seq_puts(m, "SELINGO ");2673 if (s & SWRAP)2674 seq_puts(m, "SWRAP ");2675 if (s & SDONE)2676 seq_puts(m, "SDONE ");2677 if (s & SPIORDY)2678 seq_puts(m, "SPIORDY ");2679 if (s & DMADONE)2680 seq_puts(m, "DMADONE ");2681 2682 s = GETPORT(SSTAT1) & GETPORT(SIMODE1);2683 2684 if (s & SELTO)2685 seq_puts(m, "SELTO ");2686 if (s & ATNTARG)2687 seq_puts(m, "ATNTARG ");2688 if (s & SCSIRSTI)2689 seq_puts(m, "SCSIRSTI ");2690 if (s & PHASEMIS)2691 seq_puts(m, "PHASEMIS ");2692 if (s & BUSFREE)2693 seq_puts(m, "BUSFREE ");2694 if (s & SCSIPERR)2695 seq_puts(m, "SCSIPERR ");2696 if (s & PHASECHG)2697 seq_puts(m, "PHASECHG ");2698 if (s & REQINIT)2699 seq_puts(m, "REQINIT ");2700 seq_puts(m, "); ");2701 2702 seq_puts(m, "SXFRCTL0( ");2703 2704 s = GETPORT(SXFRCTL0);2705 if (s & SCSIEN)2706 seq_puts(m, "SCSIEN ");2707 if (s & DMAEN)2708 seq_puts(m, "DMAEN ");2709 if (s & CH1)2710 seq_puts(m, "CH1 ");2711 if (s & CLRSTCNT)2712 seq_puts(m, "CLRSTCNT ");2713 if (s & SPIOEN)2714 seq_puts(m, "SPIOEN ");2715 if (s & CLRCH1)2716 seq_puts(m, "CLRCH1 ");2717 seq_puts(m, "); ");2718 2719 seq_puts(m, "SIGNAL( ");2720 2721 s = GETPORT(SCSISIG);2722 if (s & SIG_ATNI)2723 seq_puts(m, "ATNI ");2724 if (s & SIG_SELI)2725 seq_puts(m, "SELI ");2726 if (s & SIG_BSYI)2727 seq_puts(m, "BSYI ");2728 if (s & SIG_REQI)2729 seq_puts(m, "REQI ");2730 if (s & SIG_ACKI)2731 seq_puts(m, "ACKI ");2732 seq_puts(m, "); ");2733 2734 seq_printf(m, "SELID(%02x), ", GETPORT(SELID));2735 2736 seq_printf(m, "STCNT(%d), ", GETSTCNT());2737 2738 seq_puts(m, "SSTAT2( ");2739 2740 s = GETPORT(SSTAT2);2741 if (s & SOFFSET)2742 seq_puts(m, "SOFFSET ");2743 if (s & SEMPTY)2744 seq_puts(m, "SEMPTY ");2745 if (s & SFULL)2746 seq_puts(m, "SFULL ");2747 seq_printf(m, "); SFCNT (%d); ", s & (SFULL | SFCNT));2748 2749 s = GETPORT(SSTAT3);2750 seq_printf(m, "SCSICNT (%d), OFFCNT(%d), ", (s & 0xf0) >> 4, s & 0x0f);2751 2752 seq_puts(m, "SSTAT4( ");2753 s = GETPORT(SSTAT4);2754 if (s & SYNCERR)2755 seq_puts(m, "SYNCERR ");2756 if (s & FWERR)2757 seq_puts(m, "FWERR ");2758 if (s & FRERR)2759 seq_puts(m, "FRERR ");2760 seq_puts(m, "); ");2761 2762 seq_puts(m, "DMACNTRL0( ");2763 s = GETPORT(DMACNTRL0);2764 seq_printf(m, "%s ", s & _8BIT ? "8BIT" : "16BIT");2765 seq_printf(m, "%s ", s & DMA ? "DMA" : "PIO");2766 seq_printf(m, "%s ", s & WRITE_READ ? "WRITE" : "READ");2767 if (s & ENDMA)2768 seq_puts(m, "ENDMA ");2769 if (s & INTEN)2770 seq_puts(m, "INTEN ");2771 if (s & RSTFIFO)2772 seq_puts(m, "RSTFIFO ");2773 if (s & SWINT)2774 seq_puts(m, "SWINT ");2775 seq_puts(m, "); ");2776 2777 seq_puts(m, "DMASTAT( ");2778 s = GETPORT(DMASTAT);2779 if (s & ATDONE)2780 seq_puts(m, "ATDONE ");2781 if (s & WORDRDY)2782 seq_puts(m, "WORDRDY ");2783 if (s & DFIFOFULL)2784 seq_puts(m, "DFIFOFULL ");2785 if (s & DFIFOEMP)2786 seq_puts(m, "DFIFOEMP ");2787 seq_puts(m, ")\n");2788 2789 seq_puts(m, "enabled interrupts( ");2790 2791 s = GETPORT(SIMODE0);2792 if (s & ENSELDO)2793 seq_puts(m, "ENSELDO ");2794 if (s & ENSELDI)2795 seq_puts(m, "ENSELDI ");2796 if (s & ENSELINGO)2797 seq_puts(m, "ENSELINGO ");2798 if (s & ENSWRAP)2799 seq_puts(m, "ENSWRAP ");2800 if (s & ENSDONE)2801 seq_puts(m, "ENSDONE ");2802 if (s & ENSPIORDY)2803 seq_puts(m, "ENSPIORDY ");2804 if (s & ENDMADONE)2805 seq_puts(m, "ENDMADONE ");2806 2807 s = GETPORT(SIMODE1);2808 if (s & ENSELTIMO)2809 seq_puts(m, "ENSELTIMO ");2810 if (s & ENATNTARG)2811 seq_puts(m, "ENATNTARG ");2812 if (s & ENPHASEMIS)2813 seq_puts(m, "ENPHASEMIS ");2814 if (s & ENBUSFREE)2815 seq_puts(m, "ENBUSFREE ");2816 if (s & ENSCSIPERR)2817 seq_puts(m, "ENSCSIPERR ");2818 if (s & ENPHASECHG)2819 seq_puts(m, "ENPHASECHG ");2820 if (s & ENREQINIT)2821 seq_puts(m, "ENREQINIT ");2822 seq_puts(m, ")\n");2823}2824 2825static int aha152x_set_info(struct Scsi_Host *shpnt, char *buffer, int length)2826{2827 if(!shpnt || !buffer || length<8 || strncmp("aha152x ", buffer, 8)!=0)2828 return -EINVAL;2829 2830#if defined(AHA152X_STAT)2831 if(length>13 && strncmp("reset", buffer+8, 5)==0) {2832 int i;2833 2834 HOSTDATA(shpnt)->total_commands=0;2835 HOSTDATA(shpnt)->disconnections=0;2836 HOSTDATA(shpnt)->busfree_without_any_action=0;2837 HOSTDATA(shpnt)->busfree_without_old_command=0;2838 HOSTDATA(shpnt)->busfree_without_new_command=0;2839 HOSTDATA(shpnt)->busfree_without_done_command=0;2840 HOSTDATA(shpnt)->busfree_with_check_condition=0;2841 for (i = idle; i<maxstate; i++) {2842 HOSTDATA(shpnt)->count[i]=0;2843 HOSTDATA(shpnt)->count_trans[i]=0;2844 HOSTDATA(shpnt)->time[i]=0;2845 }2846 2847 shost_printk(KERN_INFO, shpnt, "aha152x: stats reset.\n");2848 2849 } else2850#endif2851 {2852 return -EINVAL;2853 }2854 2855 2856 return length;2857}2858 2859static int aha152x_show_info(struct seq_file *m, struct Scsi_Host *shpnt)2860{2861 int i;2862 struct scsi_cmnd *ptr;2863 unsigned long flags;2864 2865 seq_puts(m, AHA152X_REVID "\n");2866 2867 seq_printf(m, "ioports 0x%04lx to 0x%04lx\n",2868 shpnt->io_port, shpnt->io_port + shpnt->n_io_port - 1);2869 seq_printf(m, "interrupt 0x%02x\n", shpnt->irq);2870 seq_printf(m, "disconnection/reconnection %s\n",2871 RECONNECT ? "enabled" : "disabled");2872 seq_printf(m, "parity checking %s\n",2873 PARITY ? "enabled" : "disabled");2874 seq_printf(m, "synchronous transfers %s\n",2875 SYNCHRONOUS ? "enabled" : "disabled");2876 seq_printf(m, "%d commands currently queued\n", HOSTDATA(shpnt)->commands);2877 2878 if(SYNCHRONOUS) {2879 seq_puts(m, "synchronously operating targets (tick=50 ns):\n");2880 for (i = 0; i < 8; i++)2881 if (HOSTDATA(shpnt)->syncrate[i] & 0x7f)2882 seq_printf(m, "target %d: period %dT/%dns; req/ack offset %d\n",2883 i,2884 (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2),2885 (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2) * 50,2886 HOSTDATA(shpnt)->syncrate[i] & 0x0f);2887 }2888 seq_puts(m, "\nqueue status:\n");2889 DO_LOCK(flags);2890 if (ISSUE_SC) {2891 seq_puts(m, "not yet issued commands:\n");2892 for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr))2893 get_command(m, ptr);2894 } else2895 seq_puts(m, "no not yet issued commands\n");2896 DO_UNLOCK(flags);2897 2898 if (CURRENT_SC) {2899 seq_puts(m, "current command:\n");2900 get_command(m, CURRENT_SC);2901 } else2902 seq_puts(m, "no current command\n");2903 2904 if (DISCONNECTED_SC) {2905 seq_puts(m, "disconnected commands:\n");2906 for (ptr = DISCONNECTED_SC; ptr; ptr = SCNEXT(ptr))2907 get_command(m, ptr);2908 } else2909 seq_puts(m, "no disconnected commands\n");2910 2911 get_ports(m, shpnt);2912 2913#if defined(AHA152X_STAT)2914 seq_printf(m, "statistics:\n"2915 "total commands: %d\n"2916 "disconnections: %d\n"2917 "busfree with check condition: %d\n"2918 "busfree without old command: %d\n"2919 "busfree without new command: %d\n"2920 "busfree without done command: %d\n"2921 "busfree without any action: %d\n"2922 "state "2923 "transitions "2924 "count "2925 "time\n",2926 HOSTDATA(shpnt)->total_commands,2927 HOSTDATA(shpnt)->disconnections,2928 HOSTDATA(shpnt)->busfree_with_check_condition,2929 HOSTDATA(shpnt)->busfree_without_old_command,2930 HOSTDATA(shpnt)->busfree_without_new_command,2931 HOSTDATA(shpnt)->busfree_without_done_command,2932 HOSTDATA(shpnt)->busfree_without_any_action);2933 for(i=0; i<maxstate; i++) {2934 seq_printf(m, "%-10s %-12d %-12d %-12ld\n",2935 states[i].name,2936 HOSTDATA(shpnt)->count_trans[i],2937 HOSTDATA(shpnt)->count[i],2938 HOSTDATA(shpnt)->time[i]);2939 }2940#endif2941 return 0;2942}2943 2944static const struct scsi_host_template aha152x_driver_template = {2945 .module = THIS_MODULE,2946 .name = AHA152X_REVID,2947 .proc_name = "aha152x",2948 .show_info = aha152x_show_info,2949 .write_info = aha152x_set_info,2950 .queuecommand = aha152x_queue,2951 .eh_abort_handler = aha152x_abort,2952 .eh_device_reset_handler = aha152x_device_reset,2953 .eh_bus_reset_handler = aha152x_bus_reset,2954 .bios_param = aha152x_biosparam,2955 .can_queue = 1,2956 .this_id = 7,2957 .sg_tablesize = SG_ALL,2958 .dma_boundary = PAGE_SIZE - 1,2959 .cmd_size = sizeof(struct aha152x_cmd_priv),2960};2961 2962#if !defined(AHA152X_PCMCIA)2963static int setup_count;2964static struct aha152x_setup setup[2];2965 2966/* possible i/o addresses for the AIC-6260; default first */2967static unsigned short ports[] = { 0x340, 0x140 };2968 2969#if !defined(SKIP_BIOSTEST)2970/* possible locations for the Adaptec BIOS; defaults first */2971static unsigned int addresses[] =2972{2973 0xdc000, /* default first */2974 0xc8000,2975 0xcc000,2976 0xd0000,2977 0xd4000,2978 0xd8000,2979 0xe0000,2980 0xeb800, /* VTech Platinum SMP */2981 0xf0000,2982};2983 2984/* signatures for various AIC-6[23]60 based controllers.2985 The point in detecting signatures is to avoid useless and maybe2986 harmful probes on ports. I'm not sure that all listed boards pass2987 auto-configuration. For those which fail the BIOS signature is2988 obsolete, because user intervention to supply the configuration is2989 needed anyway. May be an information whether or not the BIOS supports2990 extended translation could be also useful here. */2991static struct signature {2992 unsigned char *signature;2993 int sig_offset;2994 int sig_length;2995} signatures[] =2996{2997 { "Adaptec AHA-1520 BIOS", 0x102e, 21 },2998 /* Adaptec 152x */2999 { "Adaptec AHA-1520B", 0x000b, 17 },3000 /* Adaptec 152x rev B */3001 { "Adaptec AHA-1520B", 0x0026, 17 },3002 /* Iomega Jaz Jet ISA (AIC6370Q) */3003 { "Adaptec ASW-B626 BIOS", 0x1029, 21 },3004 /* on-board controller */3005 { "Adaptec BIOS: ASW-B626", 0x000f, 22 },3006 /* on-board controller */3007 { "Adaptec ASW-B626 S2", 0x2e6c, 19 },3008 /* on-board controller */3009 { "Adaptec BIOS:AIC-6360", 0x000c, 21 },3010 /* on-board controller */3011 { "ScsiPro SP-360 BIOS", 0x2873, 19 },3012 /* ScsiPro-Controller */3013 { "GA-400 LOCAL BUS SCSI BIOS", 0x102e, 26 },3014 /* Gigabyte Local-Bus-SCSI */3015 { "Adaptec BIOS:AVA-282X", 0x000c, 21 },3016 /* Adaptec 282x */3017 { "Adaptec IBM Dock II SCSI", 0x2edd, 24 },3018 /* IBM Thinkpad Dock II */3019 { "Adaptec BIOS:AHA-1532P", 0x001c, 22 },3020 /* IBM Thinkpad Dock II SCSI */3021 { "DTC3520A Host Adapter BIOS", 0x318a, 26 },3022 /* DTC 3520A ISA SCSI */3023};3024#endif /* !SKIP_BIOSTEST */3025 3026/*3027 * Test, if port_base is valid.3028 *3029 */3030static int aha152x_porttest(int io_port)3031{3032 int i;3033 3034 SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */3035 for (i = 0; i < 16; i++)3036 SETPORT(io_port + O_STACK, i);3037 3038 SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */3039 for (i = 0; i < 16 && GETPORT(io_port + O_STACK) == i; i++)3040 ;3041 3042 return (i == 16);3043}3044 3045static int tc1550_porttest(int io_port)3046{3047 int i;3048 3049 SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */3050 for (i = 0; i < 16; i++)3051 SETPORT(io_port + O_STACK, i);3052 3053 SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */3054 for (i = 0; i < 16 && GETPORT(io_port + O_TC_STACK) == i; i++)3055 ;3056 3057 return (i == 16);3058}3059 3060 3061static int checksetup(struct aha152x_setup *setup)3062{3063 int i;3064 for (i = 0; i < ARRAY_SIZE(ports) && (setup->io_port != ports[i]); i++)3065 ;3066 3067 if (i == ARRAY_SIZE(ports))3068 return 0;3069 3070 if (!request_region(setup->io_port, IO_RANGE, "aha152x")) {3071 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup->io_port);3072 return 0;3073 }3074 3075 if( aha152x_porttest(setup->io_port) ) {3076 setup->tc1550=0;3077 } else if( tc1550_porttest(setup->io_port) ) {3078 setup->tc1550=1;3079 } else {3080 release_region(setup->io_port, IO_RANGE);3081 return 0;3082 }3083 3084 release_region(setup->io_port, IO_RANGE);3085 3086 if ((setup->irq < IRQ_MIN) || (setup->irq > IRQ_MAX))3087 return 0;3088 3089 if ((setup->scsiid < 0) || (setup->scsiid > 7))3090 return 0;3091 3092 if ((setup->reconnect < 0) || (setup->reconnect > 1))3093 return 0;3094 3095 if ((setup->parity < 0) || (setup->parity > 1))3096 return 0;3097 3098 if ((setup->synchronous < 0) || (setup->synchronous > 1))3099 return 0;3100 3101 if ((setup->ext_trans < 0) || (setup->ext_trans > 1))3102 return 0;3103 3104 3105 return 1;3106}3107 3108 3109static int __init aha152x_init(void)3110{3111 int i, j, ok;3112#if defined(AUTOCONF)3113 aha152x_config conf;3114#endif3115#ifdef __ISAPNP__3116 struct pnp_dev *dev=NULL, *pnpdev[2] = {NULL, NULL};3117#endif3118 3119 if ( setup_count ) {3120 printk(KERN_INFO "aha152x: processing commandline: ");3121 3122 for (i = 0; i<setup_count; i++) {3123 if (!checksetup(&setup[i])) {3124 printk(KERN_ERR "\naha152x: %s\n", setup[i].conf);3125 printk(KERN_ERR "aha152x: invalid line\n");3126 }3127 }3128 printk("ok\n");3129 }3130 3131#if defined(SETUP0)3132 if (setup_count < ARRAY_SIZE(setup)) {3133 struct aha152x_setup override = SETUP0;3134 3135 if (setup_count == 0 || (override.io_port != setup[0].io_port)) {3136 if (!checksetup(&override)) {3137 printk(KERN_ERR "\naha152x: invalid override SETUP0={0x%x,%d,%d,%d,%d,%d,%d,%d}\n",3138 override.io_port,3139 override.irq,3140 override.scsiid,3141 override.reconnect,3142 override.parity,3143 override.synchronous,3144 override.delay,3145 override.ext_trans);3146 } else3147 setup[setup_count++] = override;3148 }3149 }3150#endif3151 3152#if defined(SETUP1)3153 if (setup_count < ARRAY_SIZE(setup)) {3154 struct aha152x_setup override = SETUP1;3155 3156 if (setup_count == 0 || (override.io_port != setup[0].io_port)) {3157 if (!checksetup(&override)) {3158 printk(KERN_ERR "\naha152x: invalid override SETUP1={0x%x,%d,%d,%d,%d,%d,%d,%d}\n",3159 override.io_port,3160 override.irq,3161 override.scsiid,3162 override.reconnect,3163 override.parity,3164 override.synchronous,3165 override.delay,3166 override.ext_trans);3167 } else3168 setup[setup_count++] = override;3169 }3170 }3171#endif3172 3173#if defined(MODULE)3174 if (setup_count<ARRAY_SIZE(setup) && (aha152x[0]!=0 || io[0]!=0 || irq[0]!=0)) {3175 if(aha152x[0]!=0) {3176 setup[setup_count].conf = "";3177 setup[setup_count].io_port = aha152x[0];3178 setup[setup_count].irq = aha152x[1];3179 setup[setup_count].scsiid = aha152x[2];3180 setup[setup_count].reconnect = aha152x[3];3181 setup[setup_count].parity = aha152x[4];3182 setup[setup_count].synchronous = aha152x[5];3183 setup[setup_count].delay = aha152x[6];3184 setup[setup_count].ext_trans = aha152x[7];3185 } else if (io[0] != 0 || irq[0] != 0) {3186 if(io[0]!=0) setup[setup_count].io_port = io[0];3187 if(irq[0]!=0) setup[setup_count].irq = irq[0];3188 3189 setup[setup_count].scsiid = scsiid[0];3190 setup[setup_count].reconnect = reconnect[0];3191 setup[setup_count].parity = parity[0];3192 setup[setup_count].synchronous = sync[0];3193 setup[setup_count].delay = delay[0];3194 setup[setup_count].ext_trans = exttrans[0];3195 }3196 3197 if (checksetup(&setup[setup_count]))3198 setup_count++;3199 else3200 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",3201 setup[setup_count].io_port,3202 setup[setup_count].irq,3203 setup[setup_count].scsiid,3204 setup[setup_count].reconnect,3205 setup[setup_count].parity,3206 setup[setup_count].synchronous,3207 setup[setup_count].delay,3208 setup[setup_count].ext_trans);3209 }3210 3211 if (setup_count<ARRAY_SIZE(setup) && (aha152x1[0]!=0 || io[1]!=0 || irq[1]!=0)) {3212 if(aha152x1[0]!=0) {3213 setup[setup_count].conf = "";3214 setup[setup_count].io_port = aha152x1[0];3215 setup[setup_count].irq = aha152x1[1];3216 setup[setup_count].scsiid = aha152x1[2];3217 setup[setup_count].reconnect = aha152x1[3];3218 setup[setup_count].parity = aha152x1[4];3219 setup[setup_count].synchronous = aha152x1[5];3220 setup[setup_count].delay = aha152x1[6];3221 setup[setup_count].ext_trans = aha152x1[7];3222 } else if (io[1] != 0 || irq[1] != 0) {3223 if(io[1]!=0) setup[setup_count].io_port = io[1];3224 if(irq[1]!=0) setup[setup_count].irq = irq[1];3225 3226 setup[setup_count].scsiid = scsiid[1];3227 setup[setup_count].reconnect = reconnect[1];3228 setup[setup_count].parity = parity[1];3229 setup[setup_count].synchronous = sync[1];3230 setup[setup_count].delay = delay[1];3231 setup[setup_count].ext_trans = exttrans[1];3232 }3233 if (checksetup(&setup[setup_count]))3234 setup_count++;3235 else3236 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",3237 setup[setup_count].io_port,3238 setup[setup_count].irq,3239 setup[setup_count].scsiid,3240 setup[setup_count].reconnect,3241 setup[setup_count].parity,3242 setup[setup_count].synchronous,3243 setup[setup_count].delay,3244 setup[setup_count].ext_trans);3245 }3246#endif3247 3248#ifdef __ISAPNP__3249 for(i=0; setup_count<ARRAY_SIZE(setup) && id_table[i].vendor; i++) {3250 while ( setup_count<ARRAY_SIZE(setup) &&3251 (dev=pnp_find_dev(NULL, id_table[i].vendor, id_table[i].function, dev)) ) {3252 if (pnp_device_attach(dev) < 0)3253 continue;3254 3255 if (pnp_activate_dev(dev) < 0) {3256 pnp_device_detach(dev);3257 continue;3258 }3259 3260 if (!pnp_port_valid(dev, 0)) {3261 pnp_device_detach(dev);3262 continue;3263 }3264 3265 if (setup_count==1 && pnp_port_start(dev, 0)==setup[0].io_port) {3266 pnp_device_detach(dev);3267 continue;3268 }3269 3270 setup[setup_count].io_port = pnp_port_start(dev, 0);3271 setup[setup_count].irq = pnp_irq(dev, 0);3272 setup[setup_count].scsiid = 7;3273 setup[setup_count].reconnect = 1;3274 setup[setup_count].parity = 1;3275 setup[setup_count].synchronous = 1;3276 setup[setup_count].delay = DELAY_DEFAULT;3277 setup[setup_count].ext_trans = 0;3278#if defined(__ISAPNP__)3279 pnpdev[setup_count] = dev;3280#endif3281 printk (KERN_INFO3282 "aha152x: found ISAPnP adapter at io=0x%03x, irq=%d\n",3283 setup[setup_count].io_port, setup[setup_count].irq);3284 setup_count++;3285 }3286 }3287#endif3288 3289#if defined(AUTOCONF)3290 if (setup_count<ARRAY_SIZE(setup)) {3291#if !defined(SKIP_BIOSTEST)3292 ok = 0;3293 for (i = 0; i < ARRAY_SIZE(addresses) && !ok; i++) {3294 void __iomem *p = ioremap(addresses[i], 0x4000);3295 if (!p)3296 continue;3297 for (j = 0; j<ARRAY_SIZE(signatures) && !ok; j++)3298 ok = check_signature(p + signatures[j].sig_offset,3299 signatures[j].signature, signatures[j].sig_length);3300 iounmap(p);3301 }3302 if (!ok && setup_count == 0)3303 return -ENODEV;3304 3305 printk(KERN_INFO "aha152x: BIOS test: passed, ");3306#else3307 printk(KERN_INFO "aha152x: ");3308#endif /* !SKIP_BIOSTEST */3309 3310 ok = 0;3311 for (i = 0; i < ARRAY_SIZE(ports) && setup_count < 2; i++) {3312 if ((setup_count == 1) && (setup[0].io_port == ports[i]))3313 continue;3314 3315 if (!request_region(ports[i], IO_RANGE, "aha152x")) {3316 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", ports[i]);3317 continue;3318 }3319 3320 if (aha152x_porttest(ports[i])) {3321 setup[setup_count].tc1550 = 0;3322 3323 conf.cf_port =3324 (GETPORT(ports[i] + O_PORTA) << 8) + GETPORT(ports[i] + O_PORTB);3325 } else if (tc1550_porttest(ports[i])) {3326 setup[setup_count].tc1550 = 1;3327 3328 conf.cf_port =3329 (GETPORT(ports[i] + O_TC_PORTA) << 8) + GETPORT(ports[i] + O_TC_PORTB);3330 } else {3331 release_region(ports[i], IO_RANGE);3332 continue;3333 }3334 3335 release_region(ports[i], IO_RANGE);3336 3337 ok++;3338 setup[setup_count].io_port = ports[i];3339 setup[setup_count].irq = IRQ_MIN + conf.cf_irq;3340 setup[setup_count].scsiid = conf.cf_id;3341 setup[setup_count].reconnect = conf.cf_tardisc;3342 setup[setup_count].parity = !conf.cf_parity;3343 setup[setup_count].synchronous = conf.cf_syncneg;3344 setup[setup_count].delay = DELAY_DEFAULT;3345 setup[setup_count].ext_trans = 0;3346 setup_count++;3347 3348 }3349 3350 if (ok)3351 printk("auto configuration: ok, ");3352 }3353#endif3354 3355 printk("%d controller(s) configured\n", setup_count);3356 3357 for (i=0; i<setup_count; i++) {3358 if ( request_region(setup[i].io_port, IO_RANGE, "aha152x") ) {3359 struct Scsi_Host *shpnt = aha152x_probe_one(&setup[i]);3360 3361 if( !shpnt ) {3362 release_region(setup[i].io_port, IO_RANGE);3363#if defined(__ISAPNP__)3364 } else if( pnpdev[i] ) {3365 HOSTDATA(shpnt)->pnpdev=pnpdev[i];3366 pnpdev[i]=NULL;3367#endif3368 }3369 } else {3370 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup[i].io_port);3371 }3372 3373#if defined(__ISAPNP__)3374 if( pnpdev[i] )3375 pnp_device_detach(pnpdev[i]);3376#endif3377 }3378 3379 return 0;3380}3381 3382static void __exit aha152x_exit(void)3383{3384 struct aha152x_hostdata *hd, *tmp;3385 3386 list_for_each_entry_safe(hd, tmp, &aha152x_host_list, host_list) {3387 struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata);3388 3389 aha152x_release(shost);3390 }3391}3392 3393module_init(aha152x_init);3394module_exit(aha152x_exit);3395 3396#if !defined(MODULE)3397static int __init aha152x_setup(char *str)3398{3399 int ints[10];3400 3401 get_options(str, ARRAY_SIZE(ints), ints);3402 3403 if(setup_count>=ARRAY_SIZE(setup)) {3404 printk(KERN_ERR "aha152x: you can only configure up to two controllers\n");3405 return 1;3406 }3407 3408 setup[setup_count].conf = str;3409 setup[setup_count].io_port = ints[0] >= 1 ? ints[1] : 0x340;3410 setup[setup_count].irq = ints[0] >= 2 ? ints[2] : 11;3411 setup[setup_count].scsiid = ints[0] >= 3 ? ints[3] : 7;3412 setup[setup_count].reconnect = ints[0] >= 4 ? ints[4] : 1;3413 setup[setup_count].parity = ints[0] >= 5 ? ints[5] : 1;3414 setup[setup_count].synchronous = ints[0] >= 6 ? ints[6] : 1;3415 setup[setup_count].delay = ints[0] >= 7 ? ints[7] : DELAY_DEFAULT;3416 setup[setup_count].ext_trans = ints[0] >= 8 ? ints[8] : 0;3417 if (ints[0] > 8)3418 printk(KERN_NOTICE "aha152x: usage: aha152x=<IOBASE>[,<IRQ>[,<SCSI ID>"3419 "[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY>[,<EXT_TRANS>]]]]]]]\n");3420 else3421 setup_count++;3422 3423 return 1;3424}3425__setup("aha152x=", aha152x_setup);3426#endif3427 3428#endif /* !AHA152X_PCMCIA */3429