// SPDX-License-Identifier: GPL-2.0-or-later /* aha152x.c -- Adaptec AHA-152x driver * Author: Jürgen E. Fischer, fischer@norbit.de * Copyright 1993-2004 Jürgen E. Fischer * * $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.rst 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/scsi.h>#include <scsi/scsi_cmnd.h>#include <scsi/scsi_dbg.h>#include <scsi/scsi_device.h>#include <scsi/scsi_eh.h>#include <scsi/scsi_host.h>#include <scsi/scsi_tcq.h>#include <scsi/scsi_transport_spi.h>#include <scsi/scsicam.h>#include "aha152x.h" static LIST_HEAD(aha152x_host_list);/* DEFINES */ /* For PCMCIA cards, always use AUTOCONF */ #if defined (AHA152X_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) \static inline void struct scsi_cmnd *cmd, int inc)#define DELAY_DEFAULT 1000#if defined (AHA152X_PCMCIA)#define IRQ_MIN 0#define IRQ_MAX 16#else #define IRQ_MIN 9#if defined (__PPC)#define IRQ_MAX (irq_get_nr_irqs()-1)#else #define IRQ_MAX 12#endif #endif enum {/* command not yet issued */ /* target is being selected */ /* IDENTIFY was sent */ /* target disconnected */ /* target sent COMMAND COMPLETE */ /* ABORT was sent */ /* BUS DEVICE RESET was sent */ /* waiting for SPIORDY to raise */ /* synchronous negotiation in progress */ /* ABORT is pending */ /* BUS DEVICE RESET is pending */ /* requesting sense after CHECK CONDITION */ struct aha152x_cmd_priv {char *ptr;int this_residual;struct scatterlist *buffer;int status;int message;int sent_command;int phase;static struct aha152x_cmd_priv *aha152x_priv(struct scsi_cmnd *cmd)return scsi_cmd_priv(cmd);"Jürgen Fischer" );"GPL" );#if !defined (AHA152X_PCMCIA)#if defined (MODULE)static int io[] = {0, 0};int , ioport, NULL, 0);"base io address of controller" );static int irq[] = {0, 0};int , irq, NULL, 0);"interrupt for controller" );static int scsiid[] = {7, 7};int , NULL, 0);"scsi id of controller" );static int reconnect[] = {1, 1};int , NULL, 0);"allow targets to disconnect" );static int parity[] = {1, 1};int , NULL, 0);"use scsi parity" );static int sync[] = {1, 1};int , NULL, 0);"use synchronous transfers" );static int delay[] = {DELAY_DEFAULT, DELAY_DEFAULT};int , NULL, 0);"scsi reset delay" );static int exttrans[] = {0, 0};int , NULL, 0);"use extended translation" );static int aha152x[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0};int , NULL, 0);"parameters for first controller" );static int aha152x1[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0};int , NULL, 0);"parameters for second controller" );#endif /* MODULE */ #ifdef __ISAPNP__static struct isapnp_device_id id_table[] = {'A' , 'D' , 'P' ), ISAPNP_FUNCTION(0x1502), 0 },'A' , 'D' , 'P' ), ISAPNP_FUNCTION(0x1505), 0 },'A' , 'D' , 'P' ), ISAPNP_FUNCTION(0x1510), 0 },'A' , 'D' , 'P' ), ISAPNP_FUNCTION(0x1515), 0 },'A' , 'D' , 'P' ), ISAPNP_FUNCTION(0x1520), 0 },'A' , 'D' , 'P' ), ISAPNP_FUNCTION(0x2015), 0 },'A' , 'D' , 'P' ), ISAPNP_FUNCTION(0x1522), 0 },'A' , 'D' , 'P' ), ISAPNP_FUNCTION(0x2215), 0 },'A' , 'D' , 'P' ), ISAPNP_FUNCTION(0x1530), 0 },'A' , 'D' , 'P' ), ISAPNP_FUNCTION(0x3015), 0 },'A' , 'D' , 'P' ), ISAPNP_FUNCTION(0x1532), 0 },'A' , 'D' , 'P' ), ISAPNP_FUNCTION(0x3215), 0 },'A' , 'D' , 'P' ), ISAPNP_FUNCTION(0x6360), 0 },#endif /* ISAPNP */ #endif /* !AHA152X_PCMCIA */ static const struct scsi_host_template aha152x_driver_template;/* * internal states of the host * enum aha152x_state {/* * current state information of the host * struct aha152x_hostdata {struct scsi_cmnd *issue_SC;/* pending commands to issue */ struct scsi_cmnd *current_SC;/* current command on the bus */ struct scsi_cmnd *disconnected_SC;/* commands that disconnected */ struct scsi_cmnd *done_SC;/* command that was completed */ /* 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, 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 {struct 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;"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, unsigned char status_byte,unsigned char host_byte);/* diagnostics */ static void show_command(struct 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(struct scsi_cmnd **SC, struct scsi_cmnd *new_SC)struct scsi_cmnd *end;if (!*SC)else {for (end = *SC; SCNEXT(end); end = SCNEXT(end))static inline struct scsi_cmnd *remove_first_SC(struct scsi_cmnd ** SC)struct scsi_cmnd *ptr;if (ptr) {return ptr;static inline struct scsi_cmnd *remove_lun_SC(struct scsi_cmnd ** SC,int target, int lun)struct scsi_cmnd *ptr, *prev;for (ptr = *SC, prev = NULL;if (ptr) {if (prev)else return ptr;static inline struct scsi_cmnd *remove_SC(struct scsi_cmnd **SC,struct scsi_cmnd *SCp)struct scsi_cmnd *ptr, *prev;for (ptr = *SC, prev = NULL;if (ptr) {if (prev)else return ptr;static irqreturn_t swintr(int irqno, void *dev_id)struct Scsi_Host *shpnt = dev_id;return IRQ_HANDLED;struct Scsi_Host *aha152x_probe_one(struct aha152x_setup *setup)struct Scsi_Host *shpnt;sizeof (struct aha152x_hostdata));if (!shpnt) {"aha152x: scsi_host_alloc failed\n" );return NULL;sizeof *HOSTDATA(shpnt));/* need to have host registered before triggering any interrupt */ if (!setup->tc1550) {else {if (setup->reconnect)/* RESET OUT */ "aha152x: resetting bus...\n" );"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" ," (tc1550 mode)" : "" ,"enabled" : "disabled" ,"enabled" : "disabled" ,"enabled" : "disabled" ,"enabled" : "disabled" );/* not expecting any interrupts */ if (request_irq(shpnt->irq, swintr, IRQF_SHARED, "aha152x" , shpnt)) {"aha152x%d: irq %d busy.\n" , shpnt->host_no, shpnt->irq);goto out_host_put;"aha152x%d: trying software interrupt, " , shpnt->host_no);if (!HOSTDATA(shpnt)->swint) {if (TESTHI(DMASTAT, INTSTAT)) {"lost.\n" );else {"failed.\n" );"aha152x%d: irq %d possibly wrong. " "Please verify.\n" , shpnt->host_no, shpnt->irq);goto out_host_put;"ok.\n" );/* clear interrupts */ if (request_irq(shpnt->irq, intr, IRQF_SHARED, "aha152x" , shpnt)) {"aha152x%d: failed to reassign irq %d.\n" , shpnt->host_no, shpnt->irq);goto out_host_put;if ( scsi_add_host(shpnt, NULL) ) {"aha152x%d: failed to add host.\n" , shpnt->host_no);goto out_host_put;return shpnt;return NULL;void aha152x_release(struct Scsi_Host *shpnt)if (!shpnt)return ;if (shpnt->irq)#if !defined (AHA152X_PCMCIA)if (shpnt->io_port)#endif #ifdef __ISAPNP__if (HOSTDATA(shpnt)->pnpdev)#endif /* * 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) {struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);if (acp->phase & selecting) {else {else if (STATE==seldi) {else {if (!HOSTDATA(shpnt)->in_intr)return TESTHI(DMASTAT, INTSTAT);/* * Queue a command and setup interrupts for a free bus. static int aha152x_internal_queue(struct scsi_cmnd *SCpnt,struct completion *complete, int phase)struct aha152x_cmd_priv *acp = aha152x_priv(SCpnt);struct Scsi_Host *shpnt = SCpnt->device->host;unsigned long flags;/* Illegal status by SCSI standard */ if (acp->phase & (resetting | check_condition)) {if (!SCpnt->host_scribble || SCSEM(SCpnt) || SCNEXT(SCpnt)) {"cannot reuse command\n" );return FAILED;else {sizeof (struct aha152x_scdata), GFP_ATOMIC);if (!SCpnt->host_scribble) {"allocation failed\n" );return FAILED;/* setup scratch area SCp.ptr : buffer pointer SCp.this_residual : buffer length SCp.buffer : next buffer if ((phase & resetting) || !scsi_sglist(SCpnt)) {else {#if defined (AHA152X_STAT)#endif /* Turn led on, when this is the first command. */ if (HOSTDATA(shpnt)->commands==1)if (!HOSTDATA(shpnt)->in_intr)return 0;/* * queue a command * static int aha152x_queue_lck(struct scsi_cmnd *SCpnt)return aha152x_internal_queue(SCpnt, NULL, 0);static DEF_SCSI_QCMD(aha152x_queue)/* * static void reset_done(struct scsi_cmnd *SCpnt)if (SCSEM(SCpnt)) {else {"aha152x: reset_done w/o completion\n" );static void aha152x_scsi_done(struct scsi_cmnd *SCpnt)if (aha152x_priv(SCpnt)->phase & resetting)else /* * Abort a command * static int aha152x_abort(struct scsi_cmnd *SCpnt)struct Scsi_Host *shpnt = SCpnt->device->host;struct scsi_cmnd *ptr;unsigned long flags;if (ptr) {if (!HOSTDATA(shpnt)->commands)return SUCCESS;/* * FIXME: * for current command: queue ABORT for message out and raise ATN * for disconnected command: pseudo SC with ABORT message or ABORT on reselection? * "cannot abort running or disconnected command\n" );return FAILED;/* * Reset a device * static int aha152x_device_reset(struct scsi_cmnd * SCpnt)struct Scsi_Host *shpnt = SCpnt->device->host;int ret, issued, disconnected;unsigned char old_cmd_len = SCpnt->cmd_len;unsigned long flags;unsigned long timeleft;if (CURRENT_SC==SCpnt) {"cannot reset current device\n" );return FAILED;if (!timeleft) {/* remove command from issue queue */ if (aha152x_priv(SCpnt)->phase & resetted) {if (!HOSTDATA(shpnt)->commands)else {/* requeue */ if (!issued) {else if (disconnected) {return ret;static void free_hard_reset_SCs(struct Scsi_Host *shpnt,struct scsi_cmnd **SCs)struct scsi_cmnd *ptr;while (ptr) {struct scsi_cmnd *next;if (SCDATA(ptr)) {else {"queue corrupted at %p\n" , ptr);if (!ptr->device->soft_reset) {/* * Reset the bus * * AIC-6260 has a hard reset (MRST signal), but apparently * one cannot trigger it via software. So live with * a soft reset; no-one seemed to have cared. static int aha152x_bus_reset_host(struct Scsi_Host *shpnt)unsigned long flags;if (HOSTDATA(shpnt)->commands==0)return SUCCESS;/* * Reset the bus * static int aha152x_bus_reset(struct 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 */ /* clear all interrupt conditions */ /* clear SCSI fifos and transfer count */ /* * Reset the host (bus and controller) * int aha152x_host_reset_host(struct Scsi_Host *shpnt)return SUCCESS;/* * Return the "logical geometry" * static int aha152x_biosparam(struct scsi_device *sdev, struct block_device *bdev,int *info_array)struct Scsi_Host *shpnt = sdev->host;/* try default translation */ 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 ||if (EXT_TRANS) {"aha152x: unable to verify geometry for disk with >1GB.\n" " using extended translation.\n" );unsigned long )capacity / (255 * 63);else {"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.rst for details.\n" );else {if (info[0] == 255 && !EXT_TRANS) {"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, unsigned char status_byte,unsigned char host_byte)if (CURRENT_SC) {if (DONE_SC)"there's already a completed command %p " "- will cause abort\n" , DONE_SC);else "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;struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata);/* * 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. 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. if ( HOSTDATA(shpnt)->service==0 ) {/* Poke the BH handler */ 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 if (CURRENT_SC) {struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);#if defined (AHA152X_STAT)#endif if (acp->phase & completed) {/* target sent COMMAND COMPLETE */ else if (acp->phase & aborted) {else if (acp->phase & resetted) {else if (acp->phase & disconnected) {/* target sent DISCONNECT */ #if defined (AHA152X_STAT)#endif else {#if defined (AHA152X_STAT)else {#endif if (DONE_SC) {#if defined (AHA152X_STAT)#endif if (aha152x_priv(DONE_SC)->phase & check_condition) {struct scsi_cmnd *cmd = HOSTDATA(shpnt)->done_SC;struct aha152x_scdata *sc = SCDATA(cmd);if (!HOSTDATA(shpnt)->commands)/* turn led off */ else if (aha152x_priv(DONE_SC)->status == SAM_STAT_CHECK_CONDITION) {#if defined (AHA152X_STAT)#endif if (!(aha152x_priv(DONE_SC)->phase & not_issued)) {struct aha152x_scdata *sc;struct scsi_cmnd *ptr = DONE_SC;/* It was allocated in aha152x_internal_queue? */ if (DONE_SC) {struct scsi_cmnd *ptr = DONE_SC;/* turn led off, when no commands are in the driver */ if (!HOSTDATA(shpnt)->commands)/* turn led off */ if (!(aha152x_priv(ptr)->phase & resetting)) {#if defined (AHA152X_STAT)else {#endif if (ISSUE_SC)if (CURRENT_SC) {struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);#if defined (AHA152X_STAT)#endif /* clear selection timeout */ else {#if defined (AHA152X_STAT)#endif #if defined (AHA152X_STAT)if (!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)struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);if (TESTLO(SSTAT0, SELDO)) {"aha152x: passing bus free condition\n" );return ;if (acp->phase & aborting) {else if (acp->phase & resetting) {else if (SYNCNEG==0 && SYNCHRONOUS) {/* negotiation in progress */ /* * Selection timeout * - return command to mid-level with failure cause * static void selto_run(struct Scsi_Host *shpnt)struct aha152x_cmd_priv *acp;if (!CURRENT_SC)return ;if (acp->phase & aborted)else if (TESTLO(SSTAT0, SELINGO))else /* ARBITRATION won, but SELECTION failed */ /* * 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;if (CURRENT_SC) {struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);if (!(acp->phase & not_issued))"command should not have been issued yet\n" );if (!DISCONNECTED_SC)return ;if (selid==0) {"target id unknown (%02x)\n" , selid);return ;for (target=7; !(selid & (1 << target)); target--)if (selid & ~(1 << target)) {"multiple targets reconnected (%02x)\n" , selid);/* * message in phase * - handle initial message after reconnection to identify * reconnecting nexus * - queue command on DISCONNECTED_SC on DISCONNECT message * - set completed flag on COMMAND COMPLETE * (other completition code moved to busfree_run) * - handle response to SDTR * - clear synchronous transfer agreements on BUS RESET * * FIXME: what about SAVE POINTERS, RESTORE POINTERS? * static void msgi_run(struct Scsi_Host *shpnt)for (;;) {struct aha152x_cmd_priv *acp;int sstat1 = GETPORT(SSTAT1);if (sstat1 & (PHASECHG|PHASEMIS|BUSFREE) || !(sstat1 & REQINIT))return ;if (TESTLO(SSTAT0, SPIORDY))return ;if (!CURRENT_SC) {if (LASTSTATE!=seldi) {"message in w/o current command" " not after reselection\n" );/* * Handle reselection if (!(MSGI(0) & IDENTIFY_BASE)) {"target didn't identify after reselection\n" );continue ;if (!CURRENT_SC) {"no disconnected command" " for target %d/%d\n" ,continue ;/* next message if any */ continue ;switch (MSGI(0)) {case DISCONNECT:if (!RECONNECT)"target was not allowed to disconnect\n" );break ;case COMMAND_COMPLETE:break ;case MESSAGE_REJECT:if (SYNCNEG==1) {"Synchronous Data Transfer Request" " was rejected\n" );/* negotiation completed */ else "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) {"SDTR message length!=3\n" );break ;if (!HOSTDATA(shpnt)->synchronous)break ;"\n" );if (syncneg) {/* negotiation in progress */ if (ticks > 9 || MSGI(4) < 1 || MSGI(4) > 8) {"received Synchronous Data Transfer Request invalid - rejected\n" );break ;else if (ticks <= 9 && MSGI(4) >= 1) {if (ticks < 4) {else if (MSGI(4) > 8)else {/* requested SDTR is too slow, do it asynchronously */ "Synchronous Data Transfer Request too slow - Rejecting\n" );/* negotiation completed */ break ;case BUS_DEVICE_RESET:int i;for (i=0; i<8; i++) {break ;case EXTENDED_MODIFY_DATA_POINTER:case EXTENDED_EXTENDED_IDENTIFY:case EXTENDED_WDTR:default :break ;break ;static void msgi_end(struct Scsi_Host *shpnt)if (MSGILEN>0)"target left before message completed (%d)\n" ,if (MSGOLEN > 0 && !(GETPORT(SSTAT1) & BUSFREE))/* * message out phase * static void msgo_init(struct Scsi_Host *shpnt)if (MSGOLEN==0) {if ((aha152x_priv(CURRENT_SC)->phase & syncneg) &&else {"unexpected MESSAGE OUT phase; rejecting\n" );/* * message out phase * static void msgo_run(struct Scsi_Host *shpnt)struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);while (MSGO_I<MSGOLEN) {if (TESTLO(SSTAT0, SPIORDY))return ;if (MSGO_I==MSGOLEN-1) {/* Leave MESSAGE OUT after transfer */ if (MSGO(MSGO_I) & IDENTIFY_BASE)if (MSGO(MSGO_I)==ABORT)if (MSGO(MSGO_I)==BUS_DEVICE_RESET)static void msgo_end(struct Scsi_Host *shpnt)if (MSGO_I<MSGOLEN) {"message sent incompletely (%d/%d)\n" ,if (SYNCNEG==1) {"Synchronous Data Transfer Request was rejected\n" );/* * command phase * static void cmd_init(struct Scsi_Host *shpnt)if (aha152x_priv(CURRENT_SC)->sent_command) {"command already sent\n" );return ;/* * command phase * static void cmd_run(struct Scsi_Host *shpnt)while (CMD_I<CURRENT_SC->cmd_len) {if (TESTLO(SSTAT0, SPIORDY))return ;static void cmd_end(struct Scsi_Host *shpnt)if (CMD_I<CURRENT_SC->cmd_len)"command sent incompletely (%d/%d)\n" ,else /* * status phase * static void status_run(struct Scsi_Host *shpnt)if (TESTLO(SSTAT0, SPIORDY))return ;/* * data in phase * static void datai_init(struct Scsi_Host *shpnt)static void datai_run(struct Scsi_Host *shpnt)struct aha152x_cmd_priv *acp;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 while (TESTLO(DMASTAT, DFIFOFULL|INTSTAT) && time_before(jiffies,the_time))if (TESTLO(DMASTAT, DFIFOFULL|INTSTAT)) {"datai timeout\n" );break ;if (TESTHI(DMASTAT, DFIFOFULL)) {else {while (TESTLO(SSTAT2, SEMPTY) && time_before(jiffies,the_time))if (TESTLO(SSTAT2, SEMPTY)) {"datai sempty timeout" );break ;if (acp->this_residual > 0) {while (fifodata > 0 && acp->this_residual > 0) {if (data_count & 1) {if (data_count > 1) {if (acp->this_residual == 0 &&/* advance to next buffer */ else if (fifodata > 0) {"no buffers left for %d(%d) bytes" " (data overrun!?)\n" ,while (fifodata>0) {if (TESTLO(DMASTAT, INTSTAT) ||/* * something went wrong, if there's something left in the fifos * or the phase didn't change "fifos should be empty and phase should have changed\n" );if (DATA_LEN!=GETSTCNT()) {"manual transfer count differs from automatic " "(count=%d;stcnt=%d;diff=%d;fifostat=%d)" ,static void datai_end(struct Scsi_Host *shpnt)/* * data out phase * static void datao_init(struct Scsi_Host *shpnt)static void datao_run(struct Scsi_Host *shpnt)struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);unsigned long the_time;int data_count;/* until phase changes or all data sent */ while (TESTLO(DMASTAT, INTSTAT) && acp->this_residual > 0) {if (data_count > acp->this_residual)if (TESTLO(DMASTAT, DFIFOEMP)) {"datao fifo not empty (%d)" ,break ;if (data_count & 1) {if (data_count > 1) {if (acp->this_residual == 0 && !sg_is_last(acp->buffer)) {/* advance to next buffer */ while (TESTLO(DMASTAT, DFIFOEMP|INTSTAT) && time_before(jiffies,the_time))if (TESTLO(DMASTAT, DFIFOEMP|INTSTAT)) {"dataout timeout\n" );break ;static void datao_end(struct Scsi_Host *shpnt)struct aha152x_cmd_priv *acp = aha152x_priv(CURRENT_SC);if (TESTLO(DMASTAT, DFIFOEMP)) {int datao_out = DATA_LEN - scsi_get_resid(CURRENT_SC);int done;struct scatterlist *sg = scsi_sglist(CURRENT_SC);/* Locate the first SG entry not yet sent */ while (done > 0 && !sg_is_last(sg)) {if (done < sg->length)break ;/* * 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);if (stat1 & SCSIRSTI) {else if (stat0 & SELDI && PREVSTATE == busfree) {else if (stat0 & SELDO && CURRENT_SC &&else if (stat1 & SELTO) {else if (stat1 & BUSFREE) {else if (stat1 & 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 ;if ((stat0 & SELDI) && STATE!=seldi && !dataphase) {"reselection missed?" );if (STATE!=PREVSTATE) {return dataphase;/* * handle parity error * * FIXME: in which phase? * static void parerr_run(struct Scsi_Host *shpnt)"parity error\n" );/* * handle reset in * static void rsti_run(struct Scsi_Host *shpnt)struct scsi_cmnd *ptr;"scsi reset in\n" );while (ptr) {struct scsi_cmnd *next = SCNEXT(ptr);if (!ptr->device->soft_reset) {if (CURRENT_SC && !CURRENT_SC->device->soft_reset)/* * bottom-half handler * static void is_complete(struct Scsi_Host *shpnt)int dataphase;unsigned long flags;int pending;if (!shpnt)return ;if ( HOSTDATA(shpnt)->service==0 ) {return ;if (HOSTDATA(shpnt)->in_intr) {/* aha152x_error never returns.. */ "bottom-half already running!?" );/* * loop while there are interrupt conditions pending * do {unsigned long start = jiffies;/* * end previous state * if (PREVSTATE!=STATE && states[PREVSTATE].end)/* * disable SPIO mode if previous phase used it * and this one doesn't * if (states[PREVSTATE].spio && !states[STATE].spio) {if (CURRENT_SC)/* * accept current dataphase phase * if (dataphase) {/* * enable SPIO mode if previous didn't use it * and this one does * if (!states[PREVSTATE].spio && states[STATE].spio) {if (CURRENT_SC)/* * initialize for new state * if (PREVSTATE!=STATE && states[STATE].init)/* * handle current state * if (states[STATE].run)else "unexpected state (%x)\n" , STATE);/* * setup controller to interrupt on * the next expected condition and * loop if it's already there * #if defined (AHA152X_STAT)if (PREVSTATE!=STATE)#endif while (pending);/* * enable interrupts and leave bottom-half * /* * Dump the current driver status and panic static void aha152x_error(struct Scsi_Host *shpnt, char *msg)"%s\n" , msg);"aha152x panic\n" );/* * display enabled interrupts static void disp_enintr(struct Scsi_Host *shpnt)int s0, s1;"enabled interrupts (%s%s%s%s%s%s%s%s%s%s%s%s%s%s)\n" ,"ENSELDO " : "" ,"ENSELDI " : "" ,"ENSELINGO " : "" ,"ENSWRAP " : "" ,"ENSDONE " : "" ,"ENSPIORDY " : "" ,"ENDMADONE " : "" ,"ENSELTIMO " : "" ,"ENATNTARG " : "" ,"ENPHASEMIS " : "" ,"ENBUSFREE " : "" ,"ENSCSIPERR " : "" ,"ENPHASECHG " : "" ,"ENREQINIT " : "" );/* * Show the command data of a command static void show_command(struct scsi_cmnd *ptr)const int phase = aha152x_priv(ptr)->phase;"request_bufflen=%d; resid=%d; " "phase |%s%s%s%s%s%s%s%s%s; next=0x%p" ,"not issued|" : "" ,"selecting|" : "" ,"identified|" : "" ,"disconnected|" : "" ,"completed|" : "" ,"spiordy|" : "" ,"syncneg|" : "" ,"aborted|" : "" ,"resetted|" : "" ,/* * Dump the queued data static void show_queues(struct Scsi_Host *shpnt)struct scsi_cmnd *ptr;unsigned long flags;"\nqueue status:\nissue_SC:\n" );for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr))"current_SC:\n" );if (CURRENT_SC)else "none\n" );"disconnected_SC:\n" );for (ptr = DISCONNECTED_SC; ptr; ptr = SCDATA(ptr) ? SCNEXT(ptr) : NULL)static void get_command(struct seq_file *m, struct scsi_cmnd * ptr)struct aha152x_cmd_priv *acp = aha152x_priv(ptr);const int phase = acp->phase;int i;"%p: target=%d; lun=%d; cmnd=( " ,for (i = 0; i < COMMAND_SIZE(ptr->cmnd[0]); i++)"0x%02x " , ptr->cmnd[i]);"); resid=%d; residual=%d; buffers=%d; phase |" ,if (phase & not_issued)"not issued|" );if (phase & selecting)"selecting|" );if (phase & disconnected)"disconnected|" );if (phase & aborted)"aborted|" );if (phase & identified)"identified|" );if (phase & completed)"completed|" );if (phase & spiordy)"spiordy|" );if (phase & syncneg)"syncneg|" );"; next=0x%p\n" , SCNEXT(ptr));static void get_ports(struct seq_file *m, struct Scsi_Host *shpnt)int s;"\n%s: %s(%s) " , CURRENT_SC ? "on bus" : "waiting" , states[STATE].name, states[PREVSTATE].name);"SCSISEQ( " );if (s & TEMODEO)"TARGET MODE " );if (s & ENSELO)"SELO " );if (s & ENSELI)"SELI " );if (s & ENRESELI)"RESELI " );if (s & ENAUTOATNO)"AUTOATNO " );if (s & ENAUTOATNI)"AUTOATNI " );if (s & ENAUTOATNP)"AUTOATNP " );if (s & SCSIRSTO)"SCSIRSTO " );");" );" SCSISIG(" );switch (s & P_MASK) {case P_DATAO:"DATA OUT" );break ;case P_DATAI:"DATA IN" );break ;case P_CMD:"COMMAND" );break ;case P_STATUS:"STATUS" );break ;case P_MSGO:"MESSAGE OUT" );break ;case P_MSGI:"MESSAGE IN" );break ;default :"*invalid*" );break ;"); " );"INTSTAT (%s); " , TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo" );"SSTAT( " );if (s & TARGET)"TARGET " );if (s & SELDO)"SELDO " );if (s & SELDI)"SELDI " );if (s & SELINGO)"SELINGO " );if (s & SWRAP)"SWRAP " );if (s & SDONE)"SDONE " );if (s & SPIORDY)"SPIORDY " );if (s & DMADONE)"DMADONE " );if (s & SELTO)"SELTO " );if (s & ATNTARG)"ATNTARG " );if (s & SCSIRSTI)"SCSIRSTI " );if (s & PHASEMIS)"PHASEMIS " );if (s & BUSFREE)"BUSFREE " );if (s & SCSIPERR)"SCSIPERR " );if (s & PHASECHG)"PHASECHG " );if (s & REQINIT)"REQINIT " );"); " );"SSTAT( " );if (s & TARGET)"TARGET " );if (s & SELDO)"SELDO " );if (s & SELDI)"SELDI " );if (s & SELINGO)"SELINGO " );if (s & SWRAP)"SWRAP " );if (s & SDONE)"SDONE " );if (s & SPIORDY)"SPIORDY " );if (s & DMADONE)"DMADONE " );if (s & SELTO)"SELTO " );if (s & ATNTARG)"ATNTARG " );if (s & SCSIRSTI)"SCSIRSTI " );if (s & PHASEMIS)"PHASEMIS " );if (s & BUSFREE)"BUSFREE " );if (s & SCSIPERR)"SCSIPERR " );if (s & PHASECHG)"PHASECHG " );if (s & REQINIT)"REQINIT " );"); " );"SXFRCTL0( " );if (s & SCSIEN)"SCSIEN " );if (s & DMAEN)"DMAEN " );if (s & CH1)"CH1 " );if (s & CLRSTCNT)"CLRSTCNT " );if (s & SPIOEN)"SPIOEN " );if (s & CLRCH1)"CLRCH1 " );"); " );"SIGNAL( " );if (s & SIG_ATNI)"ATNI " );if (s & SIG_SELI)"SELI " );if (s & SIG_BSYI)"BSYI " );if (s & SIG_REQI)"REQI " );if (s & SIG_ACKI)"ACKI " );"); " );"SELID(%02x), " , GETPORT(SELID));"STCNT(%d), " , GETSTCNT());"SSTAT2( " );if (s & SOFFSET)
Messung V0.5 C=95 H=92 G=93
¤ Dauer der Verarbeitung: 0.26 Sekunden
¤ *© Formatika GbR, Deutschland
