acornscsi.c revision 7d12e780e003f93433d49ce78cfedf4b4c52adc5
11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/drivers/acorn/scsi/acornscsi.c 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Acorn SCSI 3 driver 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * By R.M.King. 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is free software; you can redistribute it and/or modify 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it under the terms of the GNU General Public License version 2 as 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * published by the Free Software Foundation. 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Abandoned using the Select and Transfer command since there were 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * some nasty races between our software and the target devices that 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * were not easy to solve, and the device errata had a lot of entries 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for this command, some of them quite nasty... 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Changelog: 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 26-Sep-1997 RMK Re-jigged to use the queue module. 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Re-coded state machine to be based on driver 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * state not scsi state. Should be easier to debug. 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Added acornscsi_release to clean up properly. 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Updated proc/scsi reporting. 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 05-Oct-1997 RMK Implemented writing to SCSI devices. 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 06-Oct-1997 RMK Corrected small (non-serious) bug with the connect/ 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * reconnect race condition causing a warning message. 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 12-Oct-1997 RMK Added catch for re-entering interrupt routine. 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 15-Oct-1997 RMK Improved handling of commands. 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 27-Jun-1998 RMK Changed asm/delay.h to linux/delay.h. 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 13-Dec-1998 RMK Better abort code and command handling. Extra state 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * transitions added to allow dodgy devices to work. 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DEBUG_NO_WRITE 1 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DEBUG_QUEUES 2 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DEBUG_DMA 4 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DEBUG_ABORT 8 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DEBUG_DISCON 16 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DEBUG_CONNECT 32 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DEBUG_PHASES 64 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DEBUG_WRITE 128 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DEBUG_LINK 256 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DEBUG_MESSAGES 512 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DEBUG_RESET 1024 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DEBUG_ALL (DEBUG_RESET|DEBUG_MESSAGES|DEBUG_LINK|DEBUG_WRITE|\ 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG_PHASES|DEBUG_CONNECT|DEBUG_DISCON|DEBUG_ABORT|\ 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG_DMA|DEBUG_QUEUES) 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* DRIVER CONFIGURATION 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SCSI-II Tagged queue support. 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * I don't have any SCSI devices that support it, so it is totally untested 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (except to make sure that it doesn't interfere with any non-tagging 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * devices). It is not fully implemented either - what happens when a 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * tagging device reconnects??? 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * You can tell if you have a device that supports tagged queueing my 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * cating (eg) /proc/scsi/acornscsi/0 and see if the SCSI revision is reported 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * as '2 TAG'. 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Also note that CONFIG_SCSI_ACORNSCSI_TAGGED_QUEUE is normally set in the config 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * scripts, but disabled here. Once debugged, remove the #undef, otherwise to debug, 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * comment out the undef. 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#undef CONFIG_SCSI_ACORNSCSI_TAGGED_QUEUE 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SCSI-II Linked command support. 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The higher level code doesn't support linked commands yet, and so the option 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * is undef'd here. 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#undef CONFIG_SCSI_ACORNSCSI_LINK 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SCSI-II Synchronous transfer support. 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Tried and tested... 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SDTR_SIZE - maximum number of un-acknowledged bytes (0 = off, 12 = max) 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SDTR_PERIOD - period of REQ signal (min=125, max=1020) 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DEFAULT_PERIOD - default REQ period. 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SDTR_SIZE 12 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SDTR_PERIOD 125 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DEFAULT_PERIOD 500 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Debugging information 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DEBUG - bit mask from list above 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DEBUG_TARGET - is defined to the target number if you want to debug 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * a specific target. [only recon/write/dma]. 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DEBUG (DEBUG_RESET|DEBUG_WRITE|DEBUG_NO_WRITE) 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* only allow writing to SCSI device 0 */ 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NO_WRITE 0xFE 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*#define DEBUG_TARGET 2*/ 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Select timeout time (in 10ms units) 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is the timeout used between the start of selection and the WD33C93 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * chip deciding that the device isn't responding. 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TIMEOUT_TIME 10 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Define this if you want to have verbose explaination of SCSI 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * status/messages. 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#undef CONFIG_ACORNSCSI_CONSTANTS 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Define this if you want to use the on board DMAC [don't remove this option] 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If not set, then use PIO mode (not currently supported). 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define USE_DMAC 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ==================================================================================== 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef DEBUG_TARGET 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DBG(cmd,xxx...) \ 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cmd->device->id == DEBUG_TARGET) { \ 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds xxx; \ 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DBG(cmd,xxx...) xxx 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifndef STRINGIFY 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define STRINGIFY(x) #x 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define STRx(x) STRINGIFY(x) 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NO_WRITE_STR STRx(NO_WRITE) 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/kernel.h> 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sched.h> 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/string.h> 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/signal.h> 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/errno.h> 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/proc_fs.h> 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/ioport.h> 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/blkdev.h> 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/delay.h> 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/interrupt.h> 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/bitops.h> 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/system.h> 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/io.h> 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/ecard.h> 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "../scsi.h" 151db9dff366ba78085d0323364fadbf09bec0e77ee<hch@lst.de>#include <scsi/scsi_dbg.h> 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_host.h> 1531abfd370134553f3b47e3e40a0526e05001409c2Matthew Wilcox#include <scsi/scsi_transport_spi.h> 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "acornscsi.h" 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "msgqueue.h" 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "scsi.h" 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsicam.h> 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define VER_MAJOR 2 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define VER_MINOR 0 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define VER_PATCH 6 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifndef ABORT_TAG 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define ABORT_TAG 0xd 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#error "Yippee! ABORT TAG is now defined! Remove this error!" 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_SCSI_ACORNSCSI_LINK 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#error SCSI2 LINKed commands not supported (yet)! 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef USE_DMAC 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DMAC setup parameters 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define INIT_DEVCON0 (DEVCON0_RQL|DEVCON0_EXW|DEVCON0_CMP) 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define INIT_DEVCON1 (DEVCON1_BHLD) 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DMAC_READ (MODECON_READ) 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DMAC_WRITE (MODECON_WRITE) 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define INIT_SBICDMA (CTRL_DMABURST) 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define scsi_xferred have_data_in 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Size of on-board DMA buffer 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DMAC_BUFFER_SIZE 65536 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define STATUS_BUFFER_TO_PRINT 24 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsunsigned int sdtr_period = SDTR_PERIOD; 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsunsigned int sdtr_size = SDTR_SIZE; 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 197ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmarstatic void acornscsi_done(AS_Host *host, struct scsi_cmnd **SCpntp, 198ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmar unsigned int result); 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int acornscsi_reconnect_finish(AS_Host *host); 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void acornscsi_dma_cleanup(AS_Host *host); 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void acornscsi_abortcmd(AS_Host *host, unsigned char tag); 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* ==================================================================================== 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Miscellaneous 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldssbic_arm_write(unsigned int io_port, int reg, int value) 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __raw_writeb(reg, io_port); 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __raw_writeb(value, io_port + 4); 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define sbic_arm_writenext(io,val) \ 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __raw_writeb((val), (io) + 4) 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint sbic_arm_read(unsigned int io_port, int reg) 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(reg == SBIC_ASR) 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return __raw_readl(io_port) & 255; 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __raw_writeb(reg, io_port); 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return __raw_readl(io_port + 4) & 255; 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define sbic_arm_readnext(io) \ 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __raw_readb((io) + 4) 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef USE_DMAC 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define dmac_read(io_port,reg) \ 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inb((io_port) + (reg)) 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define dmac_write(io_port,reg,value) \ 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ({ outb((value), (io_port) + (reg)); }) 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define dmac_clearintr(io_port) \ 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ({ outb(0, (io_port)); }) 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsunsigned int dmac_address(unsigned int io_port) 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return dmac_read(io_port, DMAC_TXADRHI) << 16 | 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_read(io_port, DMAC_TXADRMD) << 8 | 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_read(io_port, DMAC_TXADRLO); 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid acornscsi_dumpdma(AS_Host *host, char *where) 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int mode, addr, len; 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = dmac_read(host->dma.io_port, DMAC_MODECON); 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds addr = dmac_address(host->dma.io_port); 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = dmac_read(host->dma.io_port, DMAC_TXCNTHI) << 8 | 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_read(host->dma.io_port, DMAC_TXCNTLO); 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d: %s: DMAC %02x @%06x+%04x msk %02x, ", 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, where, 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode, addr, (len + 1) & 0xffff, 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_read(host->dma.io_port, DMAC_MASKREG)); 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("DMA @%06x, ", host->dma.start_addr); 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("BH @%p +%04x, ", host->scsi.SCp.ptr, 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.SCp.this_residual); 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("DT @+%04x ST @+%04x", host->dma.transferred, 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.SCp.scsi_xferred); 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("\n"); 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsunsigned long acornscsi_sbic_xfcount(AS_Host *host) 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long length; 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds length = sbic_arm_read(host->scsi.io_port, SBIC_TRANSCNTH) << 16; 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds length |= sbic_arm_readnext(host->scsi.io_port) << 8; 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds length |= sbic_arm_readnext(host->scsi.io_port); 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return length; 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsacornscsi_sbic_wait(AS_Host *host, int stat_mask, int stat, int timeout, char *msg) 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int asr; 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do { 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds asr = sbic_arm_read(host->scsi.io_port, SBIC_ASR); 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((asr & stat_mask) == stat) 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(1); 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } while (--timeout); 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d: timeout while %s\n", host->host->host_no, msg); 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint acornscsi_sbic_issuecmd(AS_Host *host, int command) 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (acornscsi_sbic_wait(host, ASR_CIP, 0, 1000, "issuing command")) 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_CMND, command); 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsacornscsi_csdelay(unsigned int cs) 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long target_jiffies, flags; 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds target_jiffies = jiffies + 1 + cs * HZ / 100; 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds local_save_flags(flags); 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds local_irq_enable(); 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (time_before(jiffies, target_jiffies)) barrier(); 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds local_irq_restore(flags); 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid acornscsi_resetcard(AS_Host *host) 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int i, timeout; 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* assert reset line */ 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->card.page_reg = 0x80; 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds outb(host->card.page_reg, host->card.io_page); 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* wait 3 cs. SCSI standard says 25ms. */ 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_csdelay(3); 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->card.page_reg = 0; 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds outb(host->card.page_reg, host->card.io_page); 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Should get a reset from the card 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds timeout = 1000; 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do { 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (inb(host->card.io_intr) & 8) 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(1); 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } while (--timeout); 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (timeout == 0) 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d: timeout while resetting card\n", 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no); 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_read(host->scsi.io_port, SBIC_ASR); 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_read(host->scsi.io_port, SBIC_SSR); 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* setup sbic - WD33C93A */ 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_OWNID, OWNID_EAF | host->host->this_id); 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_CMND, CMND_RESET); 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Command should cause a reset interrupt 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds timeout = 1000; 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do { 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (inb(host->card.io_intr) & 8) 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(1); 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } while (--timeout); 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (timeout == 0) 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d: timeout while resetting card\n", 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no); 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_read(host->scsi.io_port, SBIC_ASR); 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sbic_arm_read(host->scsi.io_port, SBIC_SSR) != 0x01) 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_CRIT "scsi%d: WD33C93A didn't give enhanced reset interrupt\n", 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no); 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_CTRL, INIT_SBICDMA | CTRL_IDI); 3841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_TIMEOUT, TIMEOUT_TIME); 3851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_SYNCHTRANSFER, SYNCHTRANSFER_2DBA); 3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_SOURCEID, SOURCEID_ER | SOURCEID_DSP); 3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->card.page_reg = 0x40; 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds outb(host->card.page_reg, host->card.io_page); 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* setup dmac - uPC71071 */ 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_INIT, 0); 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef USE_DMAC 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_INIT, INIT_8BIT); 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_CHANNEL, CHANNEL_0); 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_DEVCON0, INIT_DEVCON0); 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_DEVCON1, INIT_DEVCON1); 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->SCpnt = NULL; 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_IDLE; 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.disconnectable = 0; 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset(host->busyluns, 0, sizeof(host->busyluns)); 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < 8; i++) { 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->device[i].sync_state = SYNC_NEGOCIATE; 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->device[i].disconnect_ok = 1; 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* wait 25 cs. SCSI standard says 250ms. */ 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_csdelay(25); 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*============================================================================================= 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Utility routines (eg. debug) 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_ACORNSCSI_CONSTANTS 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *acornscsi_interrupttype[] = { 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "rst", "suc", "p/a", "3", 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "term", "5", "6", "7", 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "serv", "9", "a", "b", 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "c", "d", "e", "f" 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic signed char acornscsi_map[] = { 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 0, 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds -1, 2, -1, -1, -1, -1, 3, -1, 4, 5, 6, 7, 8, 9, 10, 11, 4291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12, 13, 14, -1, -1, -1, -1, -1, 4, 5, 6, 7, 8, 9, 10, 11, 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15, 16, 17, 18, 19, -1, -1, 20, 4, 5, 6, 7, 8, 9, 10, 11, 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21, 22, -1, -1, -1, 23, -1, -1, 4, 5, 6, 7, 8, 9, 10, 11, 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *acornscsi_interruptcode[] = { 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 0 */ 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "reset - normal mode", /* 00 */ 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "reset - advanced mode", /* 01 */ 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 2 */ 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "sel", /* 11 */ 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "sel+xfer", /* 16 */ 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "data-out", /* 18 */ 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "data-in", /* 19 */ 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "cmd", /* 1A */ 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "stat", /* 1B */ 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "??-out", /* 1C */ 4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "??-in", /* 1D */ 4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "msg-out", /* 1E */ 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "msg-in", /* 1F */ 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 12 */ 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "/ACK asserted", /* 20 */ 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "save-data-ptr", /* 21 */ 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "{re}sel", /* 22 */ 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 15 */ 4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "inv cmd", /* 40 */ 4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "unexpected disconnect", /* 41 */ 4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "sel timeout", /* 42 */ 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "P err", /* 43 */ 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "P err+ATN", /* 44 */ 4731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "bad status byte", /* 47 */ 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 21 */ 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "resel, no id", /* 80 */ 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "resel", /* 81 */ 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "discon", /* 85 */ 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid print_scsi_status(unsigned int ssr) 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (acornscsi_map[ssr] != -1) 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%s:%s", 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_interrupttype[(ssr >> 4)], 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_interruptcode[acornscsi_map[ssr]]); 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%X:%X", ssr >> 4, ssr & 0x0f); 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid print_sbic_status(int asr, int ssr, int cmdphase) 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_ACORNSCSI_CONSTANTS 4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("sbic: %c%c%c%c%c%c ", 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds asr & ASR_INT ? 'I' : 'i', 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds asr & ASR_LCI ? 'L' : 'l', 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds asr & ASR_BSY ? 'B' : 'b', 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds asr & ASR_CIP ? 'C' : 'c', 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds asr & ASR_PE ? 'P' : 'p', 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds asr & ASR_DBR ? 'D' : 'd'); 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi: "); 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds print_scsi_status(ssr); 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(" ph %02X\n", cmdphase); 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("sbic: %02X scsi: %X:%X ph: %02X\n", 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds asr, (ssr & 0xf0)>>4, ssr & 0x0f, cmdphase); 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsacornscsi_dumplogline(AS_Host *host, int target, int line) 5151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long prev; 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds signed int ptr; 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ptr = host->status_ptr[target] - STATUS_BUFFER_TO_PRINT; 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ptr < 0) 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ptr += STATUS_BUFFER_SIZE; 5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%c: %3s:", target == 8 ? 'H' : '0' + target, 5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds line == 0 ? "ph" : line == 1 ? "ssr" : "int"); 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds prev = host->status[target][ptr].when; 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (; ptr != host->status_ptr[target]; ptr = (ptr + 1) & (STATUS_BUFFER_SIZE - 1)) { 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long time_diff; 5301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!host->status[target][ptr].when) 5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 5331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (line) { 5351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0: 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("%c%02X", host->status[target][ptr].irq ? '-' : ' ', 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->status[target][ptr].ph); 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 1: 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(" %02X", host->status[target][ptr].ssr); 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 2: 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds time_diff = host->status[target][ptr].when - prev; 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds prev = host->status[target][ptr].when; 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (time_diff == 0) 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("==^"); 5491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (time_diff >= 100) 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(" "); 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(" %02ld", time_diff); 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("\n"); 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid acornscsi_dumplog(AS_Host *host, int target) 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do { 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplogline(host, target, 0); 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplogline(host, target, 1); 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplogline(host, target, 2); 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (target == 8) 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds target = 8; 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } while (1); 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldschar acornscsi_target(AS_Host *host) 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->SCpnt) 5791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return '0' + host->SCpnt->device->id; 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 'H'; 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Prototype: cmdtype_t acornscsi_cmdtype(int command) 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : differentiate READ from WRITE from other commands 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : command - command to interpret 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns : CMD_READ - command reads data, 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * CMD_WRITE - command writes data, 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * CMD_MISC - everything else 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldscmdtype_t acornscsi_cmdtype(int command) 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (command) { 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case WRITE_6: case WRITE_10: case WRITE_12: 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return CMD_WRITE; 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case READ_6: case READ_10: case READ_12: 5981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return CMD_READ; 5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return CMD_MISC; 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Prototype: int acornscsi_datadirection(int command) 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : differentiate between commands that have a DATA IN phase 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * and a DATA OUT phase 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : command - command to interpret 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns : DATADIR_OUT - data out phase expected 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DATADIR_IN - data in phase expected 6111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdatadir_t acornscsi_datadirection(int command) 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (command) { 6161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CHANGE_DEFINITION: case COMPARE: case COPY: 6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case COPY_VERIFY: case LOG_SELECT: case MODE_SELECT: 6181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MODE_SELECT_10: case SEND_DIAGNOSTIC: case WRITE_BUFFER: 6191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case FORMAT_UNIT: case REASSIGN_BLOCKS: case RESERVE: 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SEARCH_EQUAL: case SEARCH_HIGH: case SEARCH_LOW: 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case WRITE_6: case WRITE_10: case WRITE_VERIFY: 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case UPDATE_BLOCK: case WRITE_LONG: case WRITE_SAME: 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SEARCH_HIGH_12: case SEARCH_EQUAL_12: case SEARCH_LOW_12: 6241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case WRITE_12: case WRITE_VERIFY_12: case SET_WINDOW: 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MEDIUM_SCAN: case SEND_VOLUME_TAG: case 0xea: 6261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return DATADIR_OUT; 6271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 6281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return DATADIR_IN; 6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 6331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : provide values for synchronous transfers with 33C93. 6341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright: Copyright (c) 1996 John Shifflett, GeoLog Consulting 6351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Modified by Russell King for 8MHz WD33C93A 6361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct sync_xfer_tbl { 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int period_ns; 6391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char reg_value; 6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} sync_xfer_table[] = { 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 1, 0x20 }, { 249, 0x20 }, { 374, 0x30 }, 6421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 499, 0x40 }, { 624, 0x50 }, { 749, 0x60 }, 6431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 874, 0x70 }, { 999, 0x00 }, { 0, 0 } 6441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 6451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Prototype: int acornscsi_getperiod(unsigned char syncxfer) 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : period for the synchronous transfer setting 6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : syncxfer SYNCXFER register value 6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns : period in ns. 6511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint acornscsi_getperiod(unsigned char syncxfer) 6541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds syncxfer &= 0xf0; 6581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (syncxfer == 0x10) 6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds syncxfer = 0; 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 1; sync_xfer_table[i].period_ns; i++) 6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (syncxfer == sync_xfer_table[i].reg_value) 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return sync_xfer_table[i].period_ns; 6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Prototype: int round_period(unsigned int period) 6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : return index into above table for a required REQ period 6701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : period - time (ns) for REQ 6711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns : table index 6721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright: Copyright (c) 1996 John Shifflett, GeoLog Consulting 6731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint round_period(unsigned int period) 6761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 6781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 1; sync_xfer_table[i].period_ns; i++) { 6801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((period <= sync_xfer_table[i].period_ns) && 6811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (period > sync_xfer_table[i - 1].period_ns)) 6821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return i; 6831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 7; 6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 6881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Prototype: unsigned char calc_sync_xfer(unsigned int period, unsigned int offset) 6891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : calculate value for 33c93s SYNC register 6901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : period - time (ns) for REQ 6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * offset - offset in bytes between REQ/ACK 6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns : value for SYNC register 6931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright: Copyright (c) 1996 John Shifflett, GeoLog Consulting 6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 6961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsunsigned char calc_sync_xfer(unsigned int period, unsigned int offset) 6971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return sync_xfer_table[round_period(period)].reg_value | 6991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((offset < SDTR_SIZE) ? offset : SDTR_SIZE); 7001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* ==================================================================================== 7031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Command functions 7041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function: acornscsi_kick(AS_Host *host) 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : kick next command to interface 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : host - host to send command to 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns : INTR_IDLE if idle, otherwise INTR_PROCESSING 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Notes : interrupts are always disabled! 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 7131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsintr_ret_t acornscsi_kick(AS_Host *host) 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int from_queue = 0; 716ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmar struct scsi_cmnd *SCpnt; 7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* first check to see if a command is waiting to be executed */ 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt = host->origSCpnt; 7201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->origSCpnt = NULL; 7211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* retrieve next command */ 7231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!SCpnt) { 7241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt = queue_remove_exclude(&host->queues.issue, host->busyluns); 7251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!SCpnt) 7261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_IDLE; 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds from_queue = 1; 7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->scsi.disconnectable && host->SCpnt) { 7321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds queue_add_cmd_tail(&host->queues.disconnected, host->SCpnt); 7331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.disconnectable = 0; 7341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & (DEBUG_QUEUES|DEBUG_DISCON)) 7351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DBG(host->SCpnt, printk("scsi%d.%c: moved command to disconnected queue\n", 7361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host))); 7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 7381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->SCpnt = NULL; 7391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 7421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If we have an interrupt pending, then we may have been reselected. 7431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * In this case, we don't want to write to the registers 7441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(sbic_arm_read(host->scsi.io_port, SBIC_ASR) & (ASR_INT|ASR_BSY|ASR_CIP))) { 7461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_DESTID, SCpnt->device->id); 7471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_CMND, CMND_SELWITHATN); 7481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 7511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * claim host busy - all of these must happen atomically wrt 7521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * our interrupt routine. Failure means command loss. 7531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_CONNECTING; 7551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->SCpnt = SCpnt; 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.SCp = SCpnt->SCp; 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.xfer_setup = 0; 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.xfer_required = 0; 7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.xfer_done = 0; 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & (DEBUG_ABORT|DEBUG_CONNECT)) 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DBG(SCpnt,printk("scsi%d.%c: starting cmd %02X\n", 7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, '0' + SCpnt->device->id, 7641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->cmnd[0])); 7651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 7661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (from_queue) { 7681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_SCSI_ACORNSCSI_TAGGED_QUEUE 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * tagged queueing - allocate a new tag to this command 7711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (SCpnt->device->simple_tags) { 7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->device->current_tag += 1; 7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (SCpnt->device->current_tag == 0) 7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->device->current_tag = 1; 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->tag = SCpnt->device->current_tag; 7771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 7781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_bit(SCpnt->device->id * 8 + SCpnt->device->lun, host->busyluns); 7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->stats.removes += 1; 7821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (acornscsi_cmdtype(SCpnt->cmnd[0])) { 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CMD_WRITE: 7851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->stats.writes += 1; 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CMD_READ: 7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->stats.reads += 1; 7891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CMD_MISC: 7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->stats.miscs += 1; 7921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_PROCESSING; 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 800ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmar * Function: void acornscsi_done(AS_Host *host, struct scsi_cmnd **SCpntp, unsigned int result) 8011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : complete processing for command 8021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : host - interface that completed 8031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * result - driver byte of result 8041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 805ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmarstatic void acornscsi_done(AS_Host *host, struct scsi_cmnd **SCpntp, 806ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmar unsigned int result) 8071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 808ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmar struct scsi_cmnd *SCpnt = *SCpntp; 8091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clean up */ 8111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_SOURCEID, SOURCEID_ER | SOURCEID_DSP); 8121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->stats.fins += 1; 8141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (SCpnt) { 8161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *SCpntp = NULL; 8171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dma_cleanup(host); 8191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->result = result << 16 | host->scsi.SCp.Message << 8 | host->scsi.SCp.Status; 8211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 8231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * In theory, this should not happen. In practice, it seems to. 8241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Only trigger an error if the device attempts to report all happy 8251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * but with untransferred buffers... If we don't do something, then 8261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * data loss will occur. Should we check SCpnt->underflow here? 8271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * It doesn't appear to be set to something meaningful by the higher 8281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * levels all the time. 8291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 8301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (result == DID_OK) { 8311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int xfer_warn = 0; 8321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (SCpnt->underflow == 0) { 8341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->scsi.SCp.ptr && 8351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_cmdtype(SCpnt->cmnd[0]) != CMD_MISC) 8361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds xfer_warn = 1; 8371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 8381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->scsi.SCp.scsi_xferred < SCpnt->underflow || 8391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.SCp.scsi_xferred != host->dma.transferred) 8401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds xfer_warn = 1; 8411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* ANSI standard says: (SCSI-2 Rev 10c Sect 5.6.6) 8441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Targets which break data transfers into multiple 8451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * connections shall end each successful connection 8461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (except possibly the last) with a SAVE DATA 8471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * POINTER - DISCONNECT message sequence. 8481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 8491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This makes it difficult to ensure that a transfer has 8501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * completed. If we reach the end of a transfer during 8511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the command, then we can only have finished the transfer. 8521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * therefore, if we seem to have some data remaining, this 8531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * is not a problem. 8541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 8551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->dma.xfer_done) 8561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds xfer_warn = 0; 8571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (xfer_warn) { 8591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (status_byte(SCpnt->result)) { 8601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CHECK_CONDITION: 8611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case COMMAND_TERMINATED: 8621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case BUSY: 8631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case QUEUE_FULL: 8641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case RESERVATION_CONFLICT: 8651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 8681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d.H: incomplete data transfer detected: result=%08X command=", 8691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, SCpnt->result); 870db9dff366ba78085d0323364fadbf09bec0e77ee<hch@lst.de> __scsi_print_command(SCpnt->cmnd); 8711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumpdma(host, "done"); 8721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplog(host, SCpnt->device->id); 8731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->result &= 0xffff; 8741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->result |= DID_ERROR << 16; 8751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!SCpnt->scsi_done) 8801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds panic("scsi%d.H: null scsi_done function in acornscsi_done", host->host->host_no); 8811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_bit(SCpnt->device->id * 8 + SCpnt->device->lun, host->busyluns); 8831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->scsi_done(SCpnt); 8851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 8861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d: null command in acornscsi_done", host->host->host_no); 8871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_IDLE; 8891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* ==================================================================================== 8921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DMA routines 8931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 8941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : update SCSI Data Pointer 8961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Notes : this will only be one SG entry or less 8971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 8981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 8990a04137e75204e370dbdf2376033853eea126de7Christoph Hellwigvoid acornscsi_data_updateptr(AS_Host *host, struct scsi_pointer *SCp, unsigned int length) 9001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->ptr += length; 9021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->this_residual -= length; 9031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (SCp->this_residual == 0 && next_SCp(SCp) == 0) 9051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.xfer_done = 1; 9061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 9091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Prototype: void acornscsi_data_read(AS_Host *host, char *ptr, 9101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unsigned int start_addr, unsigned int length) 9111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : read data from DMA RAM 9121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : host - host to transfer from 9131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ptr - DRAM address 9141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * start_addr - host mem address 9151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * length - number of bytes to transfer 9161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Notes : this will only be one SG entry or less 9171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 9191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid acornscsi_data_read(AS_Host *host, char *ptr, 9201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int start_addr, unsigned int length) 9211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds extern void __acornscsi_in(int port, char *buf, int len); 9231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int page, offset, len = length; 9241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds page = (start_addr >> 12); 9261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset = start_addr & ((1 << 12) - 1); 9271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds outb((page & 0x3f) | host->card.page_reg, host->card.io_page); 9291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (len > 0) { 9311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int this_len; 9321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (len + offset > (1 << 12)) 9341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds this_len = (1 << 12) - offset; 9351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 9361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds this_len = len; 9371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __acornscsi_in(host->card.io_ram + (offset << 1), ptr, this_len); 9391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset += this_len; 9411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ptr += this_len; 9421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len -= this_len; 9431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (offset == (1 << 12)) { 9451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset = 0; 9461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds page ++; 9471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds outb((page & 0x3f) | host->card.page_reg, host->card.io_page); 9481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds outb(host->card.page_reg, host->card.io_page); 9511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 9541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Prototype: void acornscsi_data_write(AS_Host *host, char *ptr, 9551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unsigned int start_addr, unsigned int length) 9561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : write data to DMA RAM 9571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : host - host to transfer from 9581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ptr - DRAM address 9591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * start_addr - host mem address 9601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * length - number of bytes to transfer 9611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Notes : this will only be one SG entry or less 9621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 9641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid acornscsi_data_write(AS_Host *host, char *ptr, 9651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int start_addr, unsigned int length) 9661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds extern void __acornscsi_out(int port, char *buf, int len); 9681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int page, offset, len = length; 9691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds page = (start_addr >> 12); 9711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset = start_addr & ((1 << 12) - 1); 9721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds outb((page & 0x3f) | host->card.page_reg, host->card.io_page); 9741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (len > 0) { 9761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int this_len; 9771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (len + offset > (1 << 12)) 9791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds this_len = (1 << 12) - offset; 9801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 9811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds this_len = len; 9821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __acornscsi_out(host->card.io_ram + (offset << 1), ptr, this_len); 9841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset += this_len; 9861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ptr += this_len; 9871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len -= this_len; 9881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (offset == (1 << 12)) { 9901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset = 0; 9911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds page ++; 9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds outb((page & 0x3f) | host->card.page_reg, host->card.io_page); 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds outb(host->card.page_reg, host->card.io_page); 9961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* ========================================================================================= 9991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * On-board DMA routines 10001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef USE_DMAC 10021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 10031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Prototype: void acornscsi_dmastop(AS_Host *host) 10041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : stop all DMA 10051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : host - host on which to stop DMA 10061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Notes : This is called when leaving DATA IN/OUT phase, 10071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * or when interface is RESET 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline 10101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid acornscsi_dma_stop(AS_Host *host) 10111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_MASKREG, MASK_ON); 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_clearintr(host->dma.io_intr_clear); 10141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & DEBUG_DMA) 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DBG(host->SCpnt, acornscsi_dumpdma(host, "stop")); 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function: void acornscsi_dma_setup(AS_Host *host, dmadir_t direction) 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : setup DMA controller for data transfer 10231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : host - host to setup 10241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * direction - data transfer direction 10251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Notes : This is called when entering DATA I/O phase, not 10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * while we're in a DATA I/O phase 10271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 10291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid acornscsi_dma_setup(AS_Host *host, dmadir_t direction) 10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int address, length, mode; 10321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.direction = direction; 10341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_MASKREG, MASK_ON); 10361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (direction == DMA_OUT) { 10381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & DEBUG_NO_WRITE) 10391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (NO_WRITE & (1 << host->SCpnt->device->id)) { 10401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_CRIT "scsi%d.%c: I can't handle DMA_OUT!\n", 10411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host)); 10421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 10451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = DMAC_WRITE; 10461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 10471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mode = DMAC_READ; 10481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 10501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Allocate some buffer space, limited to half the buffer size 10511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds length = min_t(unsigned int, host->scsi.SCp.this_residual, DMAC_BUFFER_SIZE / 2); 10531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (length) { 10541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.start_addr = address = host->dma.free_addr; 10551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.free_addr = (host->dma.free_addr + length) & 10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (DMAC_BUFFER_SIZE - 1); 10571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 10591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Transfer data to DMA memory 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (direction == DMA_OUT) 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_data_write(host, host->scsi.SCp.ptr, host->dma.start_addr, 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds length); 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds length -= 1; 10661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_TXCNTLO, length); 10671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_TXCNTHI, length >> 8); 10681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_TXADRLO, address); 10691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_TXADRMD, address >> 8); 10701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_TXADRHI, 0); 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_MODECON, mode); 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_MASKREG, MASK_OFF); 10731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & DEBUG_DMA) 10751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DBG(host->SCpnt, acornscsi_dumpdma(host, "strt")); 10761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 10771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.xfer_setup = 1; 10781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 10821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function: void acornscsi_dma_cleanup(AS_Host *host) 10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : ensure that all DMA transfers are up-to-date & host->scsi.SCp is correct 10841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : host - host to finish 10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Notes : This is called when a command is: 10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * terminating, RESTORE_POINTERS, SAVE_POINTERS, DISCONECT 10871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * : This must not return until all transfers are completed. 10881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 10901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid acornscsi_dma_cleanup(AS_Host *host) 10911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_MASKREG, MASK_ON); 10931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_clearintr(host->dma.io_intr_clear); 10941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Check for a pending transfer 10971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->dma.xfer_required) { 10991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.xfer_required = 0; 11001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->dma.direction == DMA_IN) 11011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_data_read(host, host->dma.xfer_ptr, 11021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.xfer_start, host->dma.xfer_length); 11031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 11061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Has a transfer been setup? 11071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 11081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->dma.xfer_setup) { 11091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int transferred; 11101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.xfer_setup = 0; 11121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & DEBUG_DMA) 11141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DBG(host->SCpnt, acornscsi_dumpdma(host, "cupi")); 11151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 11161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 11181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Calculate number of bytes transferred from DMA. 11191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 11201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds transferred = dmac_address(host->dma.io_port) - host->dma.start_addr; 11211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.transferred += transferred; 11221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->dma.direction == DMA_IN) 11241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_data_read(host, host->scsi.SCp.ptr, 11251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.start_addr, transferred); 11261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 11281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Update SCSI pointers 11291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 11301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_data_updateptr(host, &host->scsi.SCp, transferred); 11311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & DEBUG_DMA) 11321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DBG(host->SCpnt, acornscsi_dumpdma(host, "cupo")); 11331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 11341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 11381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function: void acornscsi_dmacintr(AS_Host *host) 11391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : handle interrupts from DMAC device 11401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : host - host to process 11411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Notes : If reading, we schedule the read to main memory & 11421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * allow the transfer to continue. 11431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * : If writing, we fill the onboard DMA memory from main 11441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * memory. 11451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * : Called whenever DMAC finished it's current transfer. 11461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 11471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 11481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid acornscsi_dma_intr(AS_Host *host) 11491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int address, length, transferred; 11511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & DEBUG_DMA) 11531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DBG(host->SCpnt, acornscsi_dumpdma(host, "inti")); 11541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 11551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_MASKREG, MASK_ON); 11571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_clearintr(host->dma.io_intr_clear); 11581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 11601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Calculate amount transferred via DMA 11611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 11621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds transferred = dmac_address(host->dma.io_port) - host->dma.start_addr; 11631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.transferred += transferred; 11641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 11661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Schedule DMA transfer off board 11671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 11681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->dma.direction == DMA_IN) { 11691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.xfer_start = host->dma.start_addr; 11701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.xfer_length = transferred; 11711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.xfer_ptr = host->scsi.SCp.ptr; 11721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.xfer_required = 1; 11731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_data_updateptr(host, &host->scsi.SCp, transferred); 11761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 11781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Allocate some buffer space, limited to half the on-board RAM size 11791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 11801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds length = min_t(unsigned int, host->scsi.SCp.this_residual, DMAC_BUFFER_SIZE / 2); 11811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (length) { 11821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.start_addr = address = host->dma.free_addr; 11831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.free_addr = (host->dma.free_addr + length) & 11841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (DMAC_BUFFER_SIZE - 1); 11851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 11871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Transfer data to DMA memory 11881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 11891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->dma.direction == DMA_OUT) 11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_data_write(host, host->scsi.SCp.ptr, host->dma.start_addr, 11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds length); 11921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds length -= 1; 11941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_TXCNTLO, length); 11951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_TXCNTHI, length >> 8); 11961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_TXADRLO, address); 11971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_TXADRMD, address >> 8); 11981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_TXADRHI, 0); 11991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_MASKREG, MASK_OFF); 12001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & DEBUG_DMA) 12021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DBG(host->SCpnt, acornscsi_dumpdma(host, "into")); 12031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 12041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 12051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.xfer_setup = 0; 12061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if 0 12071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 12081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If the interface still wants more, then this is an error. 12091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * We give it another byte, but we also attempt to raise an 12101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * attention condition. We continue giving one byte until 12111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the device recognises the attention. 12121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dmac_read(host->dma.io_port, DMAC_STATUS) & STATUS_RQ0) { 12141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_abortcmd(host, host->SCpnt->tag); 12151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_TXCNTLO, 0); 12171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_TXCNTHI, 0); 12181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_TXADRLO, 0); 12191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_TXADRMD, 0); 12201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_TXADRHI, 0); 12211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_MASKREG, MASK_OFF); 12221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 12241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 12281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function: void acornscsi_dma_xfer(AS_Host *host) 12291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : transfer data between AcornSCSI and memory 12301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : host - host to process 12311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 12331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid acornscsi_dma_xfer(AS_Host *host) 12341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.xfer_required = 0; 12361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->dma.direction == DMA_IN) 12381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_data_read(host, host->dma.xfer_ptr, 12391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.xfer_start, host->dma.xfer_length); 12401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 12431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function: void acornscsi_dma_adjust(AS_Host *host) 12441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : adjust DMA pointers & count for bytes transferred to 12451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SBIC but not SCSI bus. 12461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : host - host to adjust DMA count for 12471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 12491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid acornscsi_dma_adjust(AS_Host *host) 12501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->dma.xfer_setup) { 12521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds signed long transferred; 12531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & (DEBUG_DMA|DEBUG_WRITE)) 12541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DBG(host->SCpnt, acornscsi_dumpdma(host, "adji")); 12551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 12561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 12571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Calculate correct DMA address - DMA is ahead of SCSI bus while 12581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * writing. 12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * host->scsi.SCp.scsi_xferred is the number of bytes 12601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * actually transferred to/from the SCSI bus. 12611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * host->dma.transferred is the number of bytes transferred 12621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * over DMA since host->dma.start_addr was last set. 12631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 12641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * real_dma_addr = host->dma.start_addr + host->scsi.SCp.scsi_xferred 12651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - host->dma.transferred 12661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds transferred = host->scsi.SCp.scsi_xferred - host->dma.transferred; 12681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (transferred < 0) 12691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d.%c: Ack! DMA write correction %ld < 0!\n", 12701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host), transferred); 12711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (transferred == 0) 12721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.xfer_setup = 0; 12731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else { 12741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds transferred += host->dma.start_addr; 12751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_TXADRLO, transferred); 12761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_TXADRMD, transferred >> 8); 12771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dmac_write(host->dma.io_port, DMAC_TXADRHI, transferred >> 16); 12781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & (DEBUG_DMA|DEBUG_WRITE)) 12791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DBG(host->SCpnt, acornscsi_dumpdma(host, "adjo")); 12801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 12811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 12851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* ========================================================================================= 12871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Data I/O 12881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 12901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsacornscsi_write_pio(AS_Host *host, char *bytes, int *ptr, int len, unsigned int max_timeout) 12911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int asr, timeout = max_timeout; 12931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int my_ptr = *ptr; 12941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (my_ptr < len) { 12961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds asr = sbic_arm_read(host->scsi.io_port, SBIC_ASR); 12971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (asr & ASR_DBR) { 12991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds timeout = max_timeout; 13001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_DATA, bytes[my_ptr++]); 13021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (asr & ASR_INT) 13031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (--timeout == 0) 13051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(1); 13071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *ptr = my_ptr; 13101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (timeout == 0) ? -1 : 0; 13121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 13151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function: void acornscsi_sendcommand(AS_Host *host) 13161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : send a command to a target 13171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : host - host which is connected to target 13181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 13191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 13201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsacornscsi_sendcommand(AS_Host *host) 13211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1322ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmar struct scsi_cmnd *SCpnt = host->SCpnt; 13231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_TRANSCNTH, 0); 13251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_writenext(host->scsi.io_port, 0); 13261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_writenext(host->scsi.io_port, SCpnt->cmd_len - host->scsi.SCp.sent_command); 13271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_issuecmd(host, CMND_XFERINFO); 13291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (acornscsi_write_pio(host, SCpnt->cmnd, 13311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (int *)&host->scsi.SCp.sent_command, SCpnt->cmd_len, 1000000)) 13321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d: timeout while sending command\n", host->host->host_no); 13331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_COMMAND; 13351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 13381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid acornscsi_sendmessage(AS_Host *host) 13391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int message_length = msgqueue_msglength(&host->scsi.msgs); 13411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int msgnr; 13421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct message *msg; 13431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & DEBUG_MESSAGES) 13451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d.%c: sending message ", 13461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host)); 13471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 13481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (message_length) { 13501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0: 13511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_issuecmd(host, CMND_XFERINFO | CMND_SBT); 13521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_wait(host, ASR_DBR, ASR_DBR, 1000, "sending message 1"); 13541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_DATA, NOP); 13561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.last_message = NOP; 13581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & DEBUG_MESSAGES) 13591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("NOP"); 13601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 13611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 1: 13641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_issuecmd(host, CMND_XFERINFO | CMND_SBT); 13651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msg = msgqueue_getmsg(&host->scsi.msgs, 0); 13661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_wait(host, ASR_DBR, ASR_DBR, 1000, "sending message 2"); 13681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_DATA, msg->msg[0]); 13701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.last_message = msg->msg[0]; 13721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & DEBUG_MESSAGES) 13731abfd370134553f3b47e3e40a0526e05001409c2Matthew Wilcox spi_print_msg(msg->msg); 13741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 13751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 13781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 13791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ANSI standard says: (SCSI-2 Rev 10c Sect 5.6.14) 13801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 'When a target sends this (MESSAGE_REJECT) message, it 13811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * shall change to MESSAGE IN phase and send this message 13821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * prior to requesting additional message bytes from the 13831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * initiator. This provides an interlock so that the 13841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * initiator can determine which message byte is rejected. 13851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 13861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_TRANSCNTH, 0); 13871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_writenext(host->scsi.io_port, 0); 13881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_writenext(host->scsi.io_port, message_length); 13891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_issuecmd(host, CMND_XFERINFO); 13901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msgnr = 0; 13921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while ((msg = msgqueue_getmsg(&host->scsi.msgs, msgnr++)) != NULL) { 13931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int i; 13941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & DEBUG_MESSAGES) 13951abfd370134553f3b47e3e40a0526e05001409c2Matthew Wilcox spi_print_msg(msg); 13961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 13971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds i = 0; 13981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (acornscsi_write_pio(host, msg->msg, &i, msg->length, 1000000)) 13991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d: timeout while sending message\n", host->host->host_no); 14001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.last_message = msg->msg[0]; 14021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (msg->msg[0] == EXTENDED_MESSAGE) 14031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.last_message |= msg->msg[2] << 8; 14041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (i != msg->length) 14061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & DEBUG_MESSAGES) 14111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("\n"); 14121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 14131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 14161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function: void acornscsi_readstatusbyte(AS_Host *host) 14171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : Read status byte from connected target 14181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : host - host connected to target 14191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 14201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 14211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid acornscsi_readstatusbyte(AS_Host *host) 14221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_issuecmd(host, CMND_XFERINFO|CMND_SBT); 14241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_wait(host, ASR_DBR, ASR_DBR, 1000, "reading status byte"); 14251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.SCp.Status = sbic_arm_read(host->scsi.io_port, SBIC_DATA); 14261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 14291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function: unsigned char acornscsi_readmessagebyte(AS_Host *host) 14301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : Read one message byte from connected target 14311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : host - host connected to target 14321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 14331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 14341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsunsigned char acornscsi_readmessagebyte(AS_Host *host) 14351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char message; 14371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_issuecmd(host, CMND_XFERINFO | CMND_SBT); 14391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_wait(host, ASR_DBR, ASR_DBR, 1000, "for message byte"); 14411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds message = sbic_arm_read(host->scsi.io_port, SBIC_DATA); 14431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* wait for MSGIN-XFER-PAUSED */ 14451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_wait(host, ASR_INT, ASR_INT, 1000, "for interrupt after message byte"); 14461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_read(host->scsi.io_port, SBIC_SSR); 14481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return message; 14501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 14531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function: void acornscsi_message(AS_Host *host) 14541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : Read complete message from connected target & action message 14551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : host - host connected to target 14561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 14571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 14581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid acornscsi_message(AS_Host *host) 14591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char message[16]; 14611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int msgidx = 0, msglen = 1; 14621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do { 14641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds message[msgidx] = acornscsi_readmessagebyte(host); 14651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (msgidx) { 14671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0: 14681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (message[0] == EXTENDED_MESSAGE || 14691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (message[0] >= 0x20 && message[0] <= 0x2f)) 14701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msglen = 2; 14711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 1: 14741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (message[0] == EXTENDED_MESSAGE) 14751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msglen += message[msgidx]; 14761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msgidx += 1; 14791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (msgidx < msglen) { 14801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_issuecmd(host, CMND_NEGATEACK); 14811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* wait for next msg-in */ 14831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_wait(host, ASR_INT, ASR_INT, 1000, "for interrupt after negate ack"); 14841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_read(host->scsi.io_port, SBIC_SSR); 14851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } while (msgidx < msglen); 14871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & DEBUG_MESSAGES) 14891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d.%c: message in: ", 14901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host)); 14911abfd370134553f3b47e3e40a0526e05001409c2Matthew Wilcox spi_print_msg(message); 14921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("\n"); 14931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 14941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->scsi.phase == PHASE_RECONNECTED) { 14961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 14971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ANSI standard says: (Section SCSI-2 Rev. 10c Sect 5.6.17) 14981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 'Whenever a target reconnects to an initiator to continue 14991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * a tagged I/O process, the SIMPLE QUEUE TAG message shall 15001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * be sent immediately following the IDENTIFY message...' 15011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 15021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (message[0] == SIMPLE_QUEUE_TAG) 15031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.reconnected.tag = message[1]; 15041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (acornscsi_reconnect_finish(host)) 15051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_MSGIN; 15061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (message[0]) { 15091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ABORT: 15101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ABORT_TAG: 15111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case COMMAND_COMPLETE: 15121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->scsi.phase != PHASE_STATUSIN) { 15131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d.%c: command complete following non-status in phase?\n", 15141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host)); 15151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplog(host, host->SCpnt->device->id); 15161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_DONE; 15181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.SCp.Message = message[0]; 15191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 15201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SAVE_POINTERS: 15221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 15231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ANSI standard says: (Section SCSI-2 Rev. 10c Sect 5.6.20) 15241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 'The SAVE DATA POINTER message is sent from a target to 15251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * direct the initiator to copy the active data pointer to 15261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the saved data pointer for the current I/O process. 15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 15281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dma_cleanup(host); 15291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->SCpnt->SCp = host->scsi.SCp; 15301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->SCpnt->SCp.sent_command = 0; 15311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_MSGIN; 15321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 15331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case RESTORE_POINTERS: 15351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 15361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ANSI standard says: (Section SCSI-2 Rev. 10c Sect 5.6.19) 15371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 'The RESTORE POINTERS message is sent from a target to 15381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * direct the initiator to copy the most recently saved 15391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * command, data, and status pointers for the I/O process 15401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to the corresponding active pointers. The command and 15411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * status pointers shall be restored to the beginning of 15421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the present command and status areas.' 15431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 15441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dma_cleanup(host); 15451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.SCp = host->SCpnt->SCp; 15461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_MSGIN; 15471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 15481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case DISCONNECT: 15501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 15511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ANSI standard says: (Section SCSI-2 Rev. 10c Sect 6.4.2) 15521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 'On those occasions when an error or exception condition occurs 15531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * and the target elects to repeat the information transfer, the 15541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * target may repeat the transfer either issuing a RESTORE POINTERS 15551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * message or by disconnecting without issuing a SAVE POINTERS 15561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * message. When reconnection is completed, the most recent 15571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * saved pointer values are restored.' 15581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 15591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dma_cleanup(host); 15601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_DISCONNECT; 15611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 15621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MESSAGE_REJECT: 15641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if 0 /* this isn't needed any more */ 15651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 15661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If we were negociating sync transfer, we don't yet know if 15671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this REJECT is for the sync transfer or for the tagged queue/wide 15681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * transfer. Re-initiate sync transfer negociation now, and if 15691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * we got a REJECT in response to SDTR, then it'll be set to DONE. 15701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 15711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->device[host->SCpnt->device->id].sync_state == SYNC_SENT_REQUEST) 15721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->device[host->SCpnt->device->id].sync_state = SYNC_NEGOCIATE; 15731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 15741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 15761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If we have any messages waiting to go out, then assert ATN now 15771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 15781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (msgqueue_msglength(&host->scsi.msgs)) 15791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_issuecmd(host, CMND_ASSERTATN); 15801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (host->scsi.last_message) { 15821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_SCSI_ACORNSCSI_TAGGED_QUEUE 15831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case HEAD_OF_QUEUE_TAG: 15841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ORDERED_QUEUE_TAG: 15851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SIMPLE_QUEUE_TAG: 15861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 15871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ANSI standard says: (Section SCSI-2 Rev. 10c Sect 5.6.17) 15881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If a target does not implement tagged queuing and a queue tag 15891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * message is received, it shall respond with a MESSAGE REJECT 15901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * message and accept the I/O process as if it were untagged. 15911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 15921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_NOTICE "scsi%d.%c: disabling tagged queueing\n", 15931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host)); 15941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->SCpnt->device->simple_tags = 0; 15951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_bit(host->SCpnt->device->id * 8 + host->SCpnt->device->lun, host->busyluns); 15961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 15971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 15981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case EXTENDED_MESSAGE | (EXTENDED_SDTR << 8): 15991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 16001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Target can't handle synchronous transfers 16011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_NOTICE "scsi%d.%c: Using asynchronous transfer\n", 16031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host)); 16041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->device[host->SCpnt->device->id].sync_xfer = SYNCHTRANSFER_2DBA; 16051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->device[host->SCpnt->device->id].sync_state = SYNC_ASYNCHRONOUS; 16061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_SYNCHTRANSFER, host->device[host->SCpnt->device->id].sync_xfer); 16071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 16101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case QUEUE_FULL: 16151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* TODO: target queue is full */ 16161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SIMPLE_QUEUE_TAG: 16191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* tag queue reconnect... message[1] = queue tag. Print something to indicate something happened! */ 16201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d.%c: reconnect queue tag %02X\n", 16211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host), 16221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds message[1]); 16231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case EXTENDED_MESSAGE: 16261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (message[2]) { 16271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_SCSI_ACORNSCSI_SYNC 16281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case EXTENDED_SDTR: 16291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->device[host->SCpnt->device->id].sync_state == SYNC_SENT_REQUEST) { 16301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 16311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * We requested synchronous transfers. This isn't quite right... 16321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * We can only say if this succeeded if we proceed on to execute the 16331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * command from this message. If we get a MESSAGE PARITY ERROR, 16341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * and the target retries fail, then we fallback to asynchronous mode 16351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->device[host->SCpnt->device->id].sync_state = SYNC_COMPLETED; 16371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_NOTICE "scsi%d.%c: Using synchronous transfer, offset %d, %d ns\n", 16381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host), 16391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds message[4], message[3] * 4); 16401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->device[host->SCpnt->device->id].sync_xfer = 16411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds calc_sync_xfer(message[3] * 4, message[4]); 16421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 16431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char period, length; 16441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 16451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Target requested synchronous transfers. The agreement is only 16461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to be in operation AFTER the target leaves message out phase. 16471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_issuecmd(host, CMND_ASSERTATN); 16491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds period = max_t(unsigned int, message[3], sdtr_period / 4); 16501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds length = min_t(unsigned int, message[4], sdtr_size); 16511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msgqueue_addmsg(&host->scsi.msgs, 5, EXTENDED_MESSAGE, 3, 16521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds EXTENDED_SDTR, period, length); 16531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->device[host->SCpnt->device->id].sync_xfer = 16541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds calc_sync_xfer(period * 4, length); 16551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_SYNCHTRANSFER, host->device[host->SCpnt->device->id].sync_xfer); 16571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 16591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* We do not accept synchronous transfers. Respond with a 16601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MESSAGE_REJECT. 16611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 16631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case EXTENDED_WDTR: 16651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* The WD33C93A is only 8-bit. We respond with a MESSAGE_REJECT 16661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to a wide data transfer request. 16671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 16691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_issuecmd(host, CMND_ASSERTATN); 16701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msgqueue_flush(&host->scsi.msgs); 16711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msgqueue_addmsg(&host->scsi.msgs, 1, MESSAGE_REJECT); 16721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_SCSI_ACORNSCSI_LINK 16771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case LINKED_CMD_COMPLETE: 16781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case LINKED_FLG_CMD_COMPLETE: 16791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 16801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * We don't support linked commands yet 16811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (0) { 16831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & DEBUG_LINK) 16841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d.%c: lun %d tag %d linked command complete\n", 16851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host), host->SCpnt->tag); 16861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 16871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 16881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * A linked command should only terminate with one of these messages 16891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * if there are more linked commands available. 16901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!host->SCpnt->next_link) { 16921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "scsi%d.%c: lun %d tag %d linked command complete, but no next_link\n", 16931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds instance->host_no, acornscsi_target(host), host->SCpnt->tag); 16941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_issuecmd(host, CMND_ASSERTATN); 16951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msgqueue_addmsg(&host->scsi.msgs, 1, ABORT); 16961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 1697ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmar struct scsi_cmnd *SCpnt = host->SCpnt; 16981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dma_cleanup(host); 17001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->SCpnt = host->SCpnt->next_link; 17021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->SCpnt->tag = SCpnt->tag; 17031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->result = DID_OK | host->scsi.SCp.Message << 8 | host->Scsi.SCp.Status; 17041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->done(SCpnt); 17051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* initialise host->SCpnt->SCp */ 17071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 17091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 17111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: /* reject message */ 17131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d.%c: unrecognised message %02X, rejecting\n", 17141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host), 17151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds message[0]); 17161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_issuecmd(host, CMND_ASSERTATN); 17171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msgqueue_flush(&host->scsi.msgs); 17181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msgqueue_addmsg(&host->scsi.msgs, 1, MESSAGE_REJECT); 17191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_MSGIN; 17201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 17211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_issuecmd(host, CMND_NEGATEACK); 17231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 17261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function: int acornscsi_buildmessages(AS_Host *host) 17271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : build the connection messages for a host 17281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : host - host to add messages to 17291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 17301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 17311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid acornscsi_buildmessages(AS_Host *host) 17321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if 0 17341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* does the device need resetting? */ 17351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cmd_reset) { 17361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msgqueue_addmsg(&host->scsi.msgs, 1, BUS_DEVICE_RESET); 17371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 17381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 17401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msgqueue_addmsg(&host->scsi.msgs, 1, 17421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds IDENTIFY(host->device[host->SCpnt->device->id].disconnect_ok, 17431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->SCpnt->device->lun)); 17441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if 0 17461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* does the device need the current command aborted */ 17471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cmd_aborted) { 17481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_abortcmd(host->SCpnt->tag); 17491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 17501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 17521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_SCSI_ACORNSCSI_TAGGED_QUEUE 17541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->SCpnt->tag) { 17551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int tag_type; 17561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->SCpnt->cmnd[0] == REQUEST_SENSE || 17581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->SCpnt->cmnd[0] == TEST_UNIT_READY || 17591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->SCpnt->cmnd[0] == INQUIRY) 17601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tag_type = HEAD_OF_QUEUE_TAG; 17611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 17621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tag_type = SIMPLE_QUEUE_TAG; 17631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msgqueue_addmsg(&host->scsi.msgs, 2, tag_type, host->SCpnt->tag); 17641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 17661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_SCSI_ACORNSCSI_SYNC 17681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->device[host->SCpnt->device->id].sync_state == SYNC_NEGOCIATE) { 17691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->device[host->SCpnt->device->id].sync_state = SYNC_SENT_REQUEST; 17701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msgqueue_addmsg(&host->scsi.msgs, 5, 17711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds EXTENDED_MESSAGE, 3, EXTENDED_SDTR, 17721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sdtr_period / 4, sdtr_size); 17731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 17751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 17781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function: int acornscsi_starttransfer(AS_Host *host) 17791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : transfer data to/from connected target 17801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : host - host to which target is connected 17811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns : 0 if failure 17821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 17831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 17841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint acornscsi_starttransfer(AS_Host *host) 17851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int residual; 17871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!host->scsi.SCp.ptr /*&& host->scsi.SCp.this_residual*/) { 17891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d.%c: null buffer passed to acornscsi_starttransfer\n", 17901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host)); 17911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 17921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds residual = host->SCpnt->request_bufflen - host->scsi.SCp.scsi_xferred; 17951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_SYNCHTRANSFER, host->device[host->SCpnt->device->id].sync_xfer); 17971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_writenext(host->scsi.io_port, residual >> 16); 17981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_writenext(host->scsi.io_port, residual >> 8); 17991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_writenext(host->scsi.io_port, residual); 18001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_issuecmd(host, CMND_XFERINFO); 18011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 18021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* ========================================================================================= 18051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Connection & Disconnection 18061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 18071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 18081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function : acornscsi_reconnect(AS_Host *host) 18091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : reconnect a previously disconnected command 18101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : host - host specific data 18111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Remarks : SCSI spec says: 18121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 'The set of active pointers is restored from the set 18131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * of saved pointers upon reconnection of the I/O process' 18141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 18151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 18161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint acornscsi_reconnect(AS_Host *host) 18171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int target, lun, ok = 0; 18191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds target = sbic_arm_read(host->scsi.io_port, SBIC_SOURCEID); 18211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(target & 8)) 18231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: invalid source id after reselection " 18241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "- device fault?\n", 18251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no); 18261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds target &= 7; 18281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->SCpnt && !host->scsi.disconnectable) { 18301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d.%d: reconnected while command in " 18311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "progress to target %d?\n", 18321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, target, host->SCpnt->device->id); 18331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->SCpnt = NULL; 18341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lun = sbic_arm_read(host->scsi.io_port, SBIC_DATA) & 7; 18371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.reconnected.target = target; 18391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.reconnected.lun = lun; 18401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.reconnected.tag = 0; 18411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->scsi.disconnectable && host->SCpnt && 18431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->SCpnt->device->id == target && host->SCpnt->device->lun == lun) 18441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ok = 1; 18451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ok && queue_probetgtlun(&host->queues.disconnected, target, lun)) 18471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ok = 1; 18481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ADD_STATUS(target, 0x81, host->scsi.phase, 0); 18501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ok) { 18521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_RECONNECTED; 18531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 18541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* this doesn't seem to work */ 18551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d.%c: reselected with no command " 18561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "to reconnect with\n", 18571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, '0' + target); 18581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplog(host, target); 18591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_abortcmd(host, 0); 18601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->SCpnt) { 18611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds queue_add_cmd_tail(&host->queues.disconnected, host->SCpnt); 18621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->SCpnt = NULL; 18631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_issuecmd(host, CMND_NEGATEACK); 18661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return !ok; 18671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 18701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function: int acornscsi_reconect_finish(AS_Host *host) 18711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : finish reconnecting a command 18721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : host - host to complete 18731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns : 0 if failed 18741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 18751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 18761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint acornscsi_reconnect_finish(AS_Host *host) 18771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->scsi.disconnectable && host->SCpnt) { 18791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.disconnectable = 0; 18801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->SCpnt->device->id == host->scsi.reconnected.target && 18811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->SCpnt->device->lun == host->scsi.reconnected.lun && 18821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->SCpnt->tag == host->scsi.reconnected.tag) { 18831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & (DEBUG_QUEUES|DEBUG_DISCON)) 18841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DBG(host->SCpnt, printk("scsi%d.%c: reconnected", 18851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host))); 18861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 18871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 18881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds queue_add_cmd_tail(&host->queues.disconnected, host->SCpnt); 18891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & (DEBUG_QUEUES|DEBUG_DISCON)) 18901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DBG(host->SCpnt, printk("scsi%d.%c: had to move command " 18911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "to disconnected queue\n", 18921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host))); 18931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 18941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->SCpnt = NULL; 18951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!host->SCpnt) { 18981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->SCpnt = queue_remove_tgtluntag(&host->queues.disconnected, 18991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.reconnected.target, 19001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.reconnected.lun, 19011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.reconnected.tag); 19021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & (DEBUG_QUEUES|DEBUG_DISCON)) 19031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DBG(host->SCpnt, printk("scsi%d.%c: had to get command", 19041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host))); 19051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 19061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!host->SCpnt) 19091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_abortcmd(host, host->scsi.reconnected.tag); 19101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else { 19111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 19121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Restore data pointer from SAVED pointers. 19131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 19141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.SCp = host->SCpnt->SCp; 19151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & (DEBUG_QUEUES|DEBUG_DISCON)) 19161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(", data pointers: [%p, %X]", 19171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.SCp.ptr, host->scsi.SCp.this_residual); 19181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 19191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & (DEBUG_QUEUES|DEBUG_DISCON)) 19211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("\n"); 19221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 19231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.transferred = host->scsi.SCp.scsi_xferred; 19251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return host->SCpnt != NULL; 19271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 19301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function: void acornscsi_disconnect_unexpected(AS_Host *host) 19311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : handle an unexpected disconnect 19321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : host - host on which disconnect occurred 19331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 19341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 19351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid acornscsi_disconnect_unexpected(AS_Host *host) 19361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d.%c: unexpected disconnect\n", 19381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host)); 19391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & DEBUG_ABORT) 19401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplog(host, 8); 19411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 19421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_done(host, &host->SCpnt, DID_ERROR); 19441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 19471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function: void acornscsi_abortcmd(AS_host *host, unsigned char tag) 19481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : abort a currently executing command 19491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : host - host with connected command to abort 19501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * tag - tag to abort 19511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 19521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 19531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid acornscsi_abortcmd(AS_Host *host, unsigned char tag) 19541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_ABORTED; 19561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_CMND, CMND_ASSERTATN); 19571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msgqueue_flush(&host->scsi.msgs); 19591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_SCSI_ACORNSCSI_TAGGED_QUEUE 19601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tag) 19611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msgqueue_addmsg(&host->scsi.msgs, 2, ABORT_TAG, tag); 19621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 19631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 19641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msgqueue_addmsg(&host->scsi.msgs, 1, ABORT); 19651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* ========================================================================================== 19681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Interrupt routines. 19691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 19701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 19711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function: int acornscsi_sbicintr(AS_Host *host) 19721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : handle interrupts from SCSI device 19731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : host - host to process 19741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns : INTR_PROCESS if expecting another SBIC interrupt 19751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * INTR_IDLE if no interrupt 19761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * INTR_NEXT_COMMAND if we have finished processing the command 19771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 19781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic 19791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsintr_ret_t acornscsi_sbicintr(AS_Host *host, int in_irq) 19801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int asr, ssr; 19821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds asr = sbic_arm_read(host->scsi.io_port, SBIC_ASR); 19841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(asr & ASR_INT)) 19851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_IDLE; 19861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ssr = sbic_arm_read(host->scsi.io_port, SBIC_SSR); 19881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & DEBUG_PHASES) 19901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds print_sbic_status(asr, ssr, host->scsi.phase); 19911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 19921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ADD_STATUS(8, ssr, host->scsi.phase, in_irq); 19941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->SCpnt && !host->scsi.disconnectable) 19961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ADD_STATUS(host->SCpnt->device->id, ssr, host->scsi.phase, in_irq); 19971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (ssr) { 19991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x00: /* reset state - not advanced */ 20001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: reset in standard mode but wanted advanced mode.\n", 20011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no); 20021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* setup sbic - WD33C93A */ 20031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_OWNID, OWNID_EAF | host->host->this_id); 20041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_CMND, CMND_RESET); 20051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_IDLE; 20061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x01: /* reset state - advanced */ 20081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_CTRL, INIT_SBICDMA | CTRL_IDI); 20091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_TIMEOUT, TIMEOUT_TIME); 20101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_SYNCHTRANSFER, SYNCHTRANSFER_2DBA); 20111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_SOURCEID, SOURCEID_ER | SOURCEID_DSP); 20121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msgqueue_flush(&host->scsi.msgs); 20131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_IDLE; 20141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x41: /* unexpected disconnect aborted command */ 20161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_disconnect_unexpected(host); 20171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_NEXT_COMMAND; 20181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (host->scsi.phase) { 20211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PHASE_CONNECTING: /* STATE: command removed from issue queue */ 20221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (ssr) { 20231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x11: /* -> PHASE_CONNECTED */ 20241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* BUS FREE -> SELECTION */ 20251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_CONNECTED; 20261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msgqueue_flush(&host->scsi.msgs); 20271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.transferred = host->scsi.SCp.scsi_xferred; 20281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 33C93 gives next interrupt indicating bus phase */ 20291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds asr = sbic_arm_read(host->scsi.io_port, SBIC_ASR); 20301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(asr & ASR_INT)) 20311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 20321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ssr = sbic_arm_read(host->scsi.io_port, SBIC_SSR); 20331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ADD_STATUS(8, ssr, host->scsi.phase, 1); 20341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ADD_STATUS(host->SCpnt->device->id, ssr, host->scsi.phase, 1); 20351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto connected; 20361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x42: /* select timed out */ 20381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* -> PHASE_IDLE */ 20391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_done(host, &host->SCpnt, DID_NO_CONNECT); 20401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_NEXT_COMMAND; 20411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x81: /* -> PHASE_RECONNECTED or PHASE_ABORTED */ 20431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* BUS FREE -> RESELECTION */ 20441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->origSCpnt = host->SCpnt; 20451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->SCpnt = NULL; 20461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msgqueue_flush(&host->scsi.msgs); 20471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_reconnect(host); 20481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 20491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 20511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d.%c: PHASE_CONNECTING, SSR %02X?\n", 20521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host), ssr); 20531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8); 20541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_abortcmd(host, host->SCpnt->tag); 20551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_PROCESSING; 20571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds connected: 20591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PHASE_CONNECTED: /* STATE: device selected ok */ 20601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (ssr) { 20611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NONSTANDARD 20621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8a: /* -> PHASE_COMMAND, PHASE_COMMANDPAUSED */ 20631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* SELECTION -> COMMAND */ 20641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sendcommand(host); 20651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 20661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8b: /* -> PHASE_STATUS */ 20681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* SELECTION -> STATUS */ 20691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_readstatusbyte(host); 20701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_STATUSIN; 20711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 20721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 20731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8e: /* -> PHASE_MSGOUT */ 20751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* SELECTION ->MESSAGE OUT */ 20761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_MSGOUT; 20771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_buildmessages(host); 20781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sendmessage(host); 20791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 20801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* these should not happen */ 20821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x85: /* target disconnected */ 20831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_done(host, &host->SCpnt, DID_ERROR); 20841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 20851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 20871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d.%c: PHASE_CONNECTED, SSR %02X?\n", 20881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host), ssr); 20891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8); 20901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_abortcmd(host, host->SCpnt->tag); 20911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_PROCESSING; 20931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PHASE_MSGOUT: /* STATE: connected & sent IDENTIFY message */ 20951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 20961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SCSI standard says that MESSAGE OUT phases can be followed by a 20971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DATA phase, STATUS phase, MESSAGE IN phase or COMMAND phase 20981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 20991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (ssr) { 21001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8a: /* -> PHASE_COMMAND, PHASE_COMMANDPAUSED */ 21011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x1a: /* -> PHASE_COMMAND, PHASE_COMMANDPAUSED */ 21021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* MESSAGE OUT -> COMMAND */ 21031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sendcommand(host); 21041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 21051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8b: /* -> PHASE_STATUS */ 21071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x1b: /* -> PHASE_STATUS */ 21081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* MESSAGE OUT -> STATUS */ 21091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_readstatusbyte(host); 21101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_STATUSIN; 21111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 21121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8e: /* -> PHASE_MSGOUT */ 21141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* MESSAGE_OUT(MESSAGE_IN) ->MESSAGE OUT */ 21151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sendmessage(host); 21161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 21171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x4f: /* -> PHASE_MSGIN, PHASE_DISCONNECT */ 21191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x1f: /* -> PHASE_MSGIN, PHASE_DISCONNECT */ 21201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* MESSAGE OUT -> MESSAGE IN */ 21211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_message(host); 21221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 21231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 21251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d.%c: PHASE_MSGOUT, SSR %02X?\n", 21261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host), ssr); 21271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8); 21281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 21291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_PROCESSING; 21301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PHASE_COMMAND: /* STATE: connected & command sent */ 21321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (ssr) { 21331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x18: /* -> PHASE_DATAOUT */ 21341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* COMMAND -> DATA OUT */ 21351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->scsi.SCp.sent_command != host->SCpnt->cmd_len) 21361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_abortcmd(host, host->SCpnt->tag); 21371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dma_setup(host, DMA_OUT); 21381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!acornscsi_starttransfer(host)) 21391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_abortcmd(host, host->SCpnt->tag); 21401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_DATAOUT; 21411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_IDLE; 21421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x19: /* -> PHASE_DATAIN */ 21441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* COMMAND -> DATA IN */ 21451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->scsi.SCp.sent_command != host->SCpnt->cmd_len) 21461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_abortcmd(host, host->SCpnt->tag); 21471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dma_setup(host, DMA_IN); 21481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!acornscsi_starttransfer(host)) 21491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_abortcmd(host, host->SCpnt->tag); 21501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_DATAIN; 21511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_IDLE; 21521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x1b: /* -> PHASE_STATUS */ 21541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* COMMAND -> STATUS */ 21551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_readstatusbyte(host); 21561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_STATUSIN; 21571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 21581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x1e: /* -> PHASE_MSGOUT */ 21601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* COMMAND -> MESSAGE OUT */ 21611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sendmessage(host); 21621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 21631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x1f: /* -> PHASE_MSGIN, PHASE_DISCONNECT */ 21651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* COMMAND -> MESSAGE IN */ 21661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_message(host); 21671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 21681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 21701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d.%c: PHASE_COMMAND, SSR %02X?\n", 21711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host), ssr); 21721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8); 21731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 21741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_PROCESSING; 21751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PHASE_DISCONNECT: /* STATE: connected, received DISCONNECT msg */ 21771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ssr == 0x85) { /* -> PHASE_IDLE */ 21781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.disconnectable = 1; 21791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.reconnected.tag = 0; 21801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_IDLE; 21811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->stats.disconnects += 1; 21821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 21831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d.%c: PHASE_DISCONNECT, SSR %02X instead of disconnect?\n", 21841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host), ssr); 21851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8); 21861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 21871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_NEXT_COMMAND; 21881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PHASE_IDLE: /* STATE: disconnected */ 21901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ssr == 0x81) /* -> PHASE_RECONNECTED or PHASE_ABORTED */ 21911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_reconnect(host); 21921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else { 21931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d.%c: PHASE_IDLE, SSR %02X while idle?\n", 21941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host), ssr); 21951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8); 21961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 21971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_PROCESSING; 21981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PHASE_RECONNECTED: /* STATE: device reconnected to initiator */ 22001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 22011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Command reconnected - if MESGIN, get message - it may be 22021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the tag. If not, get command out of disconnected queue 22031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 22041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 22051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If we reconnected and we're not in MESSAGE IN phase after IDENTIFY, 22061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * reconnect I_T_L command 22071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 22081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ssr != 0x8f && !acornscsi_reconnect_finish(host)) 22091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_IDLE; 22101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ADD_STATUS(host->SCpnt->device->id, ssr, host->scsi.phase, in_irq); 22111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (ssr) { 22121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x88: /* data out phase */ 22131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* -> PHASE_DATAOUT */ 22141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* MESSAGE IN -> DATA OUT */ 22151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dma_setup(host, DMA_OUT); 22161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!acornscsi_starttransfer(host)) 22171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_abortcmd(host, host->SCpnt->tag); 22181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_DATAOUT; 22191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_IDLE; 22201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x89: /* data in phase */ 22221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* -> PHASE_DATAIN */ 22231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* MESSAGE IN -> DATA IN */ 22241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dma_setup(host, DMA_IN); 22251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!acornscsi_starttransfer(host)) 22261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_abortcmd(host, host->SCpnt->tag); 22271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_DATAIN; 22281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_IDLE; 22291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8a: /* command out */ 22311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* MESSAGE IN -> COMMAND */ 22321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sendcommand(host);/* -> PHASE_COMMAND, PHASE_COMMANDPAUSED */ 22331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 22341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8b: /* status in */ 22361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* -> PHASE_STATUSIN */ 22371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* MESSAGE IN -> STATUS */ 22381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_readstatusbyte(host); 22391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_STATUSIN; 22401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 22411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8e: /* message out */ 22431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* -> PHASE_MSGOUT */ 22441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* MESSAGE IN -> MESSAGE OUT */ 22451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sendmessage(host); 22461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 22471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8f: /* message in */ 22491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_message(host); /* -> PHASE_MSGIN, PHASE_DISCONNECT */ 22501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 22511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 22531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d.%c: PHASE_RECONNECTED, SSR %02X after reconnect?\n", 22541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host), ssr); 22551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8); 22561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 22571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_PROCESSING; 22581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PHASE_DATAIN: /* STATE: transferred data in */ 22601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 22611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is simple - if we disconnect then the DMA address & count is 22621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * correct. 22631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 22641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (ssr) { 22651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x19: /* -> PHASE_DATAIN */ 22661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x89: /* -> PHASE_DATAIN */ 22671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_abortcmd(host, host->SCpnt->tag); 22681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_IDLE; 22691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x1b: /* -> PHASE_STATUSIN */ 22711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x4b: /* -> PHASE_STATUSIN */ 22721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8b: /* -> PHASE_STATUSIN */ 22731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* DATA IN -> STATUS */ 22741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.SCp.scsi_xferred = host->SCpnt->request_bufflen - 22751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_xfcount(host); 22761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dma_stop(host); 22771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_readstatusbyte(host); 22781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_STATUSIN; 22791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 22801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x1e: /* -> PHASE_MSGOUT */ 22821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x4e: /* -> PHASE_MSGOUT */ 22831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8e: /* -> PHASE_MSGOUT */ 22841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* DATA IN -> MESSAGE OUT */ 22851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.SCp.scsi_xferred = host->SCpnt->request_bufflen - 22861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_xfcount(host); 22871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dma_stop(host); 22881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sendmessage(host); 22891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 22901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x1f: /* message in */ 22921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x4f: /* message in */ 22931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8f: /* message in */ 22941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* DATA IN -> MESSAGE IN */ 22951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.SCp.scsi_xferred = host->SCpnt->request_bufflen - 22961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_xfcount(host); 22971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dma_stop(host); 22981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_message(host); /* -> PHASE_MSGIN, PHASE_DISCONNECT */ 22991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 23001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 23021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d.%c: PHASE_DATAIN, SSR %02X?\n", 23031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host), ssr); 23041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8); 23051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 23061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_PROCESSING; 23071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PHASE_DATAOUT: /* STATE: transferred data out */ 23091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 23101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is more complicated - if we disconnect, the DMA could be 12 23111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * bytes ahead of us. We need to correct this. 23121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 23131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (ssr) { 23141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x18: /* -> PHASE_DATAOUT */ 23151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x88: /* -> PHASE_DATAOUT */ 23161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_abortcmd(host, host->SCpnt->tag); 23171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_IDLE; 23181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x1b: /* -> PHASE_STATUSIN */ 23201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x4b: /* -> PHASE_STATUSIN */ 23211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8b: /* -> PHASE_STATUSIN */ 23221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* DATA OUT -> STATUS */ 23231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.SCp.scsi_xferred = host->SCpnt->request_bufflen - 23241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_xfcount(host); 23251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dma_stop(host); 23261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dma_adjust(host); 23271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_readstatusbyte(host); 23281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_STATUSIN; 23291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 23301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x1e: /* -> PHASE_MSGOUT */ 23321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x4e: /* -> PHASE_MSGOUT */ 23331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8e: /* -> PHASE_MSGOUT */ 23341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* DATA OUT -> MESSAGE OUT */ 23351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.SCp.scsi_xferred = host->SCpnt->request_bufflen - 23361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_xfcount(host); 23371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dma_stop(host); 23381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dma_adjust(host); 23391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sendmessage(host); 23401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 23411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x1f: /* message in */ 23431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x4f: /* message in */ 23441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8f: /* message in */ 23451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* DATA OUT -> MESSAGE IN */ 23461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.SCp.scsi_xferred = host->SCpnt->request_bufflen - 23471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sbic_xfcount(host); 23481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dma_stop(host); 23491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dma_adjust(host); 23501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_message(host); /* -> PHASE_MSGIN, PHASE_DISCONNECT */ 23511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 23521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 23541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d.%c: PHASE_DATAOUT, SSR %02X?\n", 23551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host), ssr); 23561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8); 23571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 23581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_PROCESSING; 23591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PHASE_STATUSIN: /* STATE: status in complete */ 23611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (ssr) { 23621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x1f: /* -> PHASE_MSGIN, PHASE_DONE, PHASE_DISCONNECT */ 23631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8f: /* -> PHASE_MSGIN, PHASE_DONE, PHASE_DISCONNECT */ 23641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* STATUS -> MESSAGE IN */ 23651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_message(host); 23661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 23671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x1e: /* -> PHASE_MSGOUT */ 23691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8e: /* -> PHASE_MSGOUT */ 23701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* STATUS -> MESSAGE OUT */ 23711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sendmessage(host); 23721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 23731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 23751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d.%c: PHASE_STATUSIN, SSR %02X instead of MESSAGE_IN?\n", 23761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host), ssr); 23771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8); 23781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 23791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_PROCESSING; 23801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PHASE_MSGIN: /* STATE: message in */ 23821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (ssr) { 23831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x1e: /* -> PHASE_MSGOUT */ 23841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x4e: /* -> PHASE_MSGOUT */ 23851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8e: /* -> PHASE_MSGOUT */ 23861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* MESSAGE IN -> MESSAGE OUT */ 23871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sendmessage(host); 23881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 23891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x1f: /* -> PHASE_MSGIN, PHASE_DONE, PHASE_DISCONNECT */ 23911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x2f: 23921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x4f: 23931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8f: 23941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_message(host); 23951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 23961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x85: 23981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d.%c: strange message in disconnection\n", 23991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host)); 24001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8); 24011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_done(host, &host->SCpnt, DID_ERROR); 24021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 24031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 24051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d.%c: PHASE_MSGIN, SSR %02X after message in?\n", 24061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host), ssr); 24071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8); 24081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 24091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_PROCESSING; 24101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PHASE_DONE: /* STATE: received status & message */ 24121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (ssr) { 24131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x85: /* -> PHASE_IDLE */ 24141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_done(host, &host->SCpnt, DID_OK); 24151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_NEXT_COMMAND; 24161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x1e: 24181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8e: 24191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sendmessage(host); 24201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 24211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 24231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d.%c: PHASE_DONE, SSR %02X instead of disconnect?\n", 24241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host), ssr); 24251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8); 24261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 24271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_PROCESSING; 24281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PHASE_ABORTED: 24301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (ssr) { 24311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x85: 24321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->SCpnt) 24331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_done(host, &host->SCpnt, DID_ABORT); 24341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else { 24351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_bit(host->scsi.reconnected.target * 8 + host->scsi.reconnected.lun, 24361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->busyluns); 24371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.phase = PHASE_IDLE; 24381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 24391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_NEXT_COMMAND; 24401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x1e: 24421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x2e: 24431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x4e: 24441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0x8e: 24451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_sendmessage(host); 24461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 24471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 24491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d.%c: PHASE_ABORTED, SSR %02X?\n", 24501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host), ssr); 24511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8); 24521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 24531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_PROCESSING; 24541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 24561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d.%c: unknown driver phase %d\n", 24571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, acornscsi_target(host), ssr); 24581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8); 24591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 24601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return INTR_PROCESSING; 24611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 24621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 24647d12e780e003f93433d49ce78cfedf4b4c52adc5David Howells * Prototype: void acornscsi_intr(int irq, void *dev_id) 24651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : handle interrupts from Acorn SCSI card 24661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : irq - interrupt number 24671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dev_id - device specific data (AS_Host structure) 24681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 24691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic irqreturn_t 24707d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsacornscsi_intr(int irq, void *dev_id) 24711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 24721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds AS_Host *host = (AS_Host *)dev_id; 24731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds intr_ret_t ret; 24741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int iostatus; 24751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int in_irq = 0; 24761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do { 24781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = INTR_IDLE; 24791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds iostatus = inb(host->card.io_intr); 24811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (iostatus & 2) { 24831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dma_intr(host); 24841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds iostatus = inb(host->card.io_intr); 24851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 24861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (iostatus & 8) 24881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = acornscsi_sbicintr(host, in_irq); 24891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 24911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If we have a transfer pending, start it. 24921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Only start it if the interface has already started transferring 24931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it's data 24941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 24951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->dma.xfer_required) 24961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dma_xfer(host); 24971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ret == INTR_NEXT_COMMAND) 24991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = acornscsi_kick(host); 25001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds in_irq = 1; 25021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } while (ret != INTR_IDLE); 25031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return IRQ_HANDLED; 25051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 25061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*============================================================================================= 25081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Interfaces between interrupt handler and rest of scsi code 25091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 25101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2512ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmar * Function : acornscsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) 25131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : queues a SCSI command 25141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : cmd - SCSI command 25151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * done - function called on completion, with pointer to command descriptor 25161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns : 0, or < 0 on error. 25171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2518ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmarint acornscsi_queuecmd(struct scsi_cmnd *SCpnt, 2519ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmar void (*done)(struct scsi_cmnd *)) 25201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 25211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds AS_Host *host = (AS_Host *)SCpnt->device->host->hostdata; 25221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!done) { 25241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* there should be some way of rejecting errors like this without panicing... */ 25251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds panic("scsi%d: queuecommand called with NULL done function [cmd=%p]", 25261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, SCpnt); 25271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 25281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 25291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & DEBUG_NO_WRITE) 25311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (acornscsi_cmdtype(SCpnt->cmnd[0]) == CMD_WRITE && (NO_WRITE & (1 << SCpnt->device->id))) { 25321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_CRIT "scsi%d.%c: WRITE attempted with NO_WRITE flag set\n", 25331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host->host_no, '0' + SCpnt->device->id); 25341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->result = DID_NO_CONNECT << 16; 25351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds done(SCpnt); 25361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 25371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 25381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 25391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->scsi_done = done; 25411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->host_scribble = NULL; 25421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->result = 0; 25431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->tag = 0; 25441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->SCp.phase = (int)acornscsi_datadirection(SCpnt->cmnd[0]); 25451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->SCp.sent_command = 0; 25461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->SCp.scsi_xferred = 0; 25471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds init_SCp(SCpnt); 25491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->stats.queues += 1; 25511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 25531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 25541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!queue_add_cmd_ordered(&host->queues.issue, SCpnt)) { 25561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->result = DID_ERROR << 16; 25571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds done(SCpnt); 25581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 25591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 25601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds local_irq_save(flags); 25611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->scsi.phase == PHASE_IDLE) 25621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_kick(host); 25631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds local_irq_restore(flags); 25641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 25651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 25661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 25671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2569ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmar * Prototype: void acornscsi_reportstatus(struct scsi_cmnd **SCpntp1, struct scsi_cmnd **SCpntp2, int result) 25701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : pass a result to *SCpntp1, and check if *SCpntp1 = *SCpntp2 25711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : SCpntp1 - pointer to command to return 25721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SCpntp2 - pointer to command to check 25731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * result - result to pass back to mid-level done function 25741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns : *SCpntp2 = NULL if *SCpntp1 is the same command structure as *SCpntp2. 25751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2576ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmarstatic inline void acornscsi_reportstatus(struct scsi_cmnd **SCpntp1, 2577ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmar struct scsi_cmnd **SCpntp2, 2578ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmar int result) 25791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2580ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmar struct scsi_cmnd *SCpnt = *SCpntp1; 25811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (SCpnt) { 25831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *SCpntp1 = NULL; 25841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->result = result; 25861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->scsi_done(SCpnt); 25871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 25881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (SCpnt == *SCpntp2) 25901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *SCpntp2 = NULL; 25911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 25921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsenum res_abort { res_not_running, res_success, res_success_clear, res_snooze }; 25941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2596ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmar * Prototype: enum res acornscsi_do_abort(struct scsi_cmnd *SCpnt) 25971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : abort a command on this host 25981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : SCpnt - command to abort 25991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns : our abort status 26001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2601ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmarstatic enum res_abort acornscsi_do_abort(AS_Host *host, struct scsi_cmnd *SCpnt) 26021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 26031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enum res_abort res = res_not_running; 26041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (queue_remove_cmd(&host->queues.issue, SCpnt)) { 26061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 26071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The command was on the issue queue, and has not been 26081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * issued yet. We can remove the command from the queue, 26091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * and acknowledge the abort. Neither the devices nor the 26101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * interface know about the command. 26111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 26121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds//#if (DEBUG & DEBUG_ABORT) 26131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("on issue queue "); 26141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds//#endif 26151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res = res_success; 26161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (queue_remove_cmd(&host->queues.disconnected, SCpnt)) { 26171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 26181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The command was on the disconnected queue. Simply 26191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * acknowledge the abort condition, and when the target 26201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * reconnects, we will give it an ABORT message. The 26211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * target should then disconnect, and we will clear 26221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the busylun bit. 26231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 26241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds//#if (DEBUG & DEBUG_ABORT) 26251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("on disconnected queue "); 26261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds//#endif 26271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res = res_success; 26281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (host->SCpnt == SCpnt) { 26291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 26301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds//#if (DEBUG & DEBUG_ABORT) 26321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("executing "); 26331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds//#endif 26341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds local_irq_save(flags); 26361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (host->scsi.phase) { 26371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 26381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If the interface is idle, and the command is 'disconnectable', 26391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * then it is the same as on the disconnected queue. We simply 26401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * remove all traces of the command. When the target reconnects, 26411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * we will give it an ABORT message since the command could not 26421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * be found. When the target finally disconnects, we will clear 26431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the busylun bit. 26441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 26451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PHASE_IDLE: 26461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->scsi.disconnectable) { 26471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.disconnectable = 0; 26481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->SCpnt = NULL; 26491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res = res_success; 26501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 26511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 26521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 26541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If the command has connected and done nothing further, 26551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * simply force a disconnect. We also need to clear the 26561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * busylun bit. 26571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 26581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PHASE_CONNECTED: 26591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbic_arm_write(host->scsi.io_port, SBIC_CMND, CMND_DISCONNECT); 26601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->SCpnt = NULL; 26611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res = res_success_clear; 26621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 26631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 26651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_abortcmd(host, host->SCpnt->tag); 26661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res = res_snooze; 26671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 26681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds local_irq_restore(flags); 26691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (host->origSCpnt == SCpnt) { 26701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 26711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The command will be executed next, but a command 26721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * is currently using the interface. This is similar to 26731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * being on the issue queue, except the busylun bit has 26741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * been set. 26751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 26761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->origSCpnt = NULL; 26771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds//#if (DEBUG & DEBUG_ABORT) 26781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("waiting for execution "); 26791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds//#endif 26801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds res = res_success_clear; 26811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 26821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("unknown "); 26831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return res; 26851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 26861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2688ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmar * Prototype: int acornscsi_abort(struct scsi_cmnd *SCpnt) 26891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : abort a command on this host 26901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : SCpnt - command to abort 26911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns : one of SCSI_ABORT_ macros 26921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2693ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmarint acornscsi_abort(struct scsi_cmnd *SCpnt) 26941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 26951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds AS_Host *host = (AS_Host *) SCpnt->device->host->hostdata; 26961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int result; 26971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->stats.aborts += 1; 26991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & DEBUG_ABORT) 27011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 27021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int asr, ssr; 27031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds asr = sbic_arm_read(host->scsi.io_port, SBIC_ASR); 27041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ssr = sbic_arm_read(host->scsi.io_port, SBIC_SSR); 27051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "acornscsi_abort: "); 27071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds print_sbic_status(asr, ssr, host->scsi.phase); 27081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplog(host, SCpnt->device->id); 27091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 27101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 27111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d: ", host->host->host_no); 27131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (acornscsi_do_abort(host, SCpnt)) { 27151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 27161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * We managed to find the command and cleared it out. 27171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * We do not expect the command to be executing on the 27181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * target, but we have set the busylun bit. 27191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 27201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case res_success_clear: 27211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds//#if (DEBUG & DEBUG_ABORT) 27221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("clear "); 27231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds//#endif 27241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear_bit(SCpnt->device->id * 8 + SCpnt->device->lun, host->busyluns); 27251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 27271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * We found the command, and cleared it out. Either 27281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the command is still known to be executing on the 27291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * target, or the busylun bit is not set. 27301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 27311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case res_success: 27321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds//#if (DEBUG & DEBUG_ABORT) 27331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("success\n"); 27341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds//#endif 27351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->result = DID_ABORT << 16; 27361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->scsi_done(SCpnt); 27371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result = SCSI_ABORT_SUCCESS; 27381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 27391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 27411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * We did find the command, but unfortunately we couldn't 27421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unhook it from ourselves. Wait some more, and if it 27431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * still doesn't complete, reset the interface. 27441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 27451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case res_snooze: 27461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds//#if (DEBUG & DEBUG_ABORT) 27471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("snooze\n"); 27481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds//#endif 27491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result = SCSI_ABORT_SNOOZE; 27501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 27511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 27531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The command could not be found (either because it completed, 27541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * or it got dropped. 27551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 27561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 27571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case res_not_running: 27581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplog(host, SCpnt->device->id); 27591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & DEBUG_ABORT) 27601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result = SCSI_ABORT_SNOOZE; 27611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 27621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result = SCSI_ABORT_NOT_RUNNING; 27631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 27641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds//#if (DEBUG & DEBUG_ABORT) 27651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("not running\n"); 27661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds//#endif 27671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 27681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 27691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return result; 27711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 27721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2774ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmar * Prototype: int acornscsi_reset(struct scsi_cmnd *SCpnt, unsigned int reset_flags) 27751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : reset a command on this host/reset this host 27761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : SCpnt - command causing reset 27771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * result - what type of reset to perform 27781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns : one of SCSI_RESET_ macros 27791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2780ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmarint acornscsi_reset(struct scsi_cmnd *SCpnt, unsigned int reset_flags) 27811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2782ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmar AS_Host *host = (AS_Host *)SCpnt->device->host->hostdata; 2783ee0ca6bab394fe41a2b4de58c4532b09a41c9165Henrik Kretzschmar struct scsi_cmnd *SCptr; 27841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->stats.resets += 1; 27861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & DEBUG_RESET) 27881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 27891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int asr, ssr; 27901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds asr = sbic_arm_read(host->scsi.io_port, SBIC_ASR); 27921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ssr = sbic_arm_read(host->scsi.io_port, SBIC_SSR); 27931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "acornscsi_reset: "); 27951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds print_sbic_status(asr, ssr, host->scsi.phase); 27961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dumplog(host, SCpnt->device->id); 27971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 27981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 27991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_dma_stop(host); 28011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCptr = host->SCpnt; 28031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 28051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * do hard reset. This resets all devices on this host, and so we 28061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * must set the reset status on all commands. 28071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 28081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_resetcard(host); 28091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 28111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * report reset on commands current connected/disconnected 28121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 28131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_reportstatus(&host->SCpnt, &SCptr, DID_RESET); 28141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while ((SCptr = queue_remove(&host->queues.disconnected)) != NULL) 28161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_reportstatus(&SCptr, &SCpnt, DID_RESET); 28171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (SCpnt) { 28191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->result = DID_RESET << 16; 28201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCpnt->scsi_done(SCpnt); 28211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 28221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return SCSI_RESET_BUS_RESET | SCSI_RESET_HOST_RESET | SCSI_RESET_SUCCESS; 28241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 28251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*============================================================================================== 28271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * initialisation & miscellaneous support 28281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 28291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 28311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function: char *acornscsi_info(struct Scsi_Host *host) 28321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : return a string describing this interface 28331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Params : host - host to give information on 28341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns : a constant string 28351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 28361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsconst 28371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldschar *acornscsi_info(struct Scsi_Host *host) 28381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 28391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds static char string[100], *p; 28401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = string; 28421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += sprintf(string, "%s at port %08lX irq %d v%d.%d.%d" 28441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_SCSI_ACORNSCSI_SYNC 28451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds " SYNC" 28461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 28471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_SCSI_ACORNSCSI_TAGGED_QUEUE 28481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds " TAG" 28491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 28501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_SCSI_ACORNSCSI_LINK 28511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds " LINK" 28521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 28531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & DEBUG_NO_WRITE) 28541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds " NOWRITE ("NO_WRITE_STR")" 28551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 28561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds , host->hostt->name, host->io_port, host->irq, 28571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds VER_MAJOR, VER_MINOR, VER_PATCH); 28581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return string; 28591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 28601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint acornscsi_proc_info(struct Scsi_Host *instance, char *buffer, char **start, off_t offset, 28621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int length, int inout) 28631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 28641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int pos, begin = 0, devidx; 2865f64a181d898e0518d5ae90c4870069510de977e1Christoph Hellwig struct scsi_device *scd; 28661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds AS_Host *host; 28671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *p = buffer; 28681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (inout == 1) 28701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 28711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host = (AS_Host *)instance->hostdata; 28731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += sprintf(p, "AcornSCSI driver v%d.%d.%d" 28751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_SCSI_ACORNSCSI_SYNC 28761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds " SYNC" 28771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 28781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_SCSI_ACORNSCSI_TAGGED_QUEUE 28791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds " TAG" 28801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 28811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_SCSI_ACORNSCSI_LINK 28821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds " LINK" 28831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 28841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if (DEBUG & DEBUG_NO_WRITE) 28851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds " NOWRITE ("NO_WRITE_STR")" 28861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 28871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "\n\n", VER_MAJOR, VER_MINOR, VER_PATCH); 28881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += sprintf(p, "SBIC: WD33C93A Address: %08X IRQ : %d\n", 28901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->scsi.io_port, host->scsi.irq); 28911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef USE_DMAC 28921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += sprintf(p, "DMAC: uPC71071 Address: %08X IRQ : %d\n\n", 28931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->dma.io_port, host->scsi.irq); 28941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 28951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += sprintf(p, "Statistics:\n" 28971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "Queued commands: %-10u Issued commands: %-10u\n" 28981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "Done commands : %-10u Reads : %-10u\n" 28991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "Writes : %-10u Others : %-10u\n" 29001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "Disconnects : %-10u Aborts : %-10u\n" 29011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "Resets : %-10u\n\nLast phases:", 29021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->stats.queues, host->stats.removes, 29031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->stats.fins, host->stats.reads, 29041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->stats.writes, host->stats.miscs, 29051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->stats.disconnects, host->stats.aborts, 29061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->stats.resets); 29071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (devidx = 0; devidx < 9; devidx ++) { 29091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int statptr, prev; 29101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += sprintf(p, "\n%c:", devidx == 8 ? 'H' : ('0' + devidx)); 29121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds statptr = host->status_ptr[devidx] - 10; 29131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((signed int)statptr < 0) 29151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds statptr += STATUS_BUFFER_SIZE; 29161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds prev = host->status[devidx][statptr].when; 29181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (; statptr != host->status_ptr[devidx]; statptr = (statptr + 1) & (STATUS_BUFFER_SIZE - 1)) { 29201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->status[devidx][statptr].when) { 29211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += sprintf(p, "%c%02X:%02X+%2ld", 29221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->status[devidx][statptr].irq ? '-' : ' ', 29231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->status[devidx][statptr].ph, 29241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->status[devidx][statptr].ssr, 29251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (host->status[devidx][statptr].when - prev) < 100 ? 29261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (host->status[devidx][statptr].when - prev) : 99); 29271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds prev = host->status[devidx][statptr].when; 29281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 29291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 29301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 29311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += sprintf(p, "\nAttached devices:\n"); 29331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds shost_for_each_device(scd, instance) { 29351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += sprintf(p, "Device/Lun TaggedQ Sync\n"); 29361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += sprintf(p, " %d/%d ", scd->id, scd->lun); 29371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (scd->tagged_supported) 29381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += sprintf(p, "%3sabled(%3d) ", 29391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scd->simple_tags ? "en" : "dis", 29401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scd->current_tag); 29411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 29421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += sprintf(p, "unsupported "); 29431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host->device[scd->id].sync_xfer & 15) 29451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += sprintf(p, "offset %d, %d ns\n", 29461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->device[scd->id].sync_xfer & 15, 29471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_getperiod(host->device[scd->id].sync_xfer)); 29481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 29491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += sprintf(p, "async\n"); 29501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pos = p - buffer; 29521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (pos + begin < offset) { 29531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds begin += pos; 29541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = buffer; 29551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 29561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pos = p - buffer; 29571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (pos + begin > offset + length) { 29581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_device_put(scd); 29591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 29601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 29611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 29621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pos = p - buffer; 29641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *start = buffer + (offset - begin); 29661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pos -= offset - begin; 29671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (pos > length) 29691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pos = length; 29701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return pos; 29721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 29731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2974d0be4a7d29ad0bd3ce2209dd9e46d410b632db59Christoph Hellwigstatic struct scsi_host_template acornscsi_template = { 29751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .module = THIS_MODULE, 29761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .proc_info = acornscsi_proc_info, 29771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .name = "AcornSCSI", 29781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .info = acornscsi_info, 29791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .queuecommand = acornscsi_queuecmd, 29801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#warning fixme 29811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .abort = acornscsi_abort, 29821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .reset = acornscsi_reset, 29831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .can_queue = 16, 29841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .this_id = 7, 29851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .sg_tablesize = SG_ALL, 29861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .cmd_per_lun = 2, 29871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .unchecked_isa_dma = 0, 29881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .use_clustering = DISABLE_CLUSTERING, 29891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .proc_name = "acornscsi", 29901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 29911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __devinit 29931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsacornscsi_probe(struct expansion_card *ec, const struct ecard_id *id) 29941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 29951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *host; 29961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds AS_Host *ashost; 29971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret = -ENOMEM; 29981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host = scsi_host_alloc(&acornscsi_template, sizeof(AS_Host)); 30001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!host) 30011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 30021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ashost = (AS_Host *)host->hostdata; 30041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->io_port = ecard_address(ec, ECARD_MEMC, 0); 30061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->irq = ec->irq; 30071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ashost->host = host; 30091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ashost->scsi.io_port = ioaddr(host->io_port + 0x800); 30101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ashost->scsi.irq = host->irq; 30111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ashost->card.io_intr = POD_SPACE(host->io_port) + 0x800; 30121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ashost->card.io_page = POD_SPACE(host->io_port) + 0xc00; 30131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ashost->card.io_ram = ioaddr(host->io_port); 30141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ashost->dma.io_port = host->io_port + 0xc00; 30151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ashost->dma.io_intr_clear = POD_SPACE(host->io_port) + 0x800; 30161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ec->irqaddr = (char *)ioaddr(ashost->card.io_intr); 30181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ec->irqmask = 0x0a; 30191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = -EBUSY; 30211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!request_region(host->io_port + 0x800, 2, "acornscsi(sbic)")) 30221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err_1; 30231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!request_region(ashost->card.io_intr, 1, "acornscsi(intr)")) 30241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err_2; 30251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!request_region(ashost->card.io_page, 1, "acornscsi(page)")) 30261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err_3; 30271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef USE_DMAC 30281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!request_region(ashost->dma.io_port, 256, "acornscsi(dmac)")) 30291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err_4; 30301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 30311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!request_region(host->io_port, 2048, "acornscsi(ram)")) 30321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err_5; 30331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30341d6f359a2e06296418481239f8054a878f36e819Thomas Gleixner ret = request_irq(host->irq, acornscsi_intr, IRQF_DISABLED, "acornscsi", ashost); 30351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ret) { 30361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_CRIT "scsi%d: IRQ%d not free: %d\n", 30371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, ashost->scsi.irq, ret); 30381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err_6; 30391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 30401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset(&ashost->stats, 0, sizeof (ashost->stats)); 30421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds queue_initialise(&ashost->queues.issue); 30431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds queue_initialise(&ashost->queues.disconnected); 30441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msgqueue_initialise(&ashost->scsi.msgs); 30451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acornscsi_resetcard(ashost); 30471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = scsi_add_host(host, &ec->dev); 30491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ret) 30501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err_7; 30511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_scan_host(host); 30531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 30541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err_7: 30561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_irq(host->irq, ashost); 30571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err_6: 30581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds release_region(host->io_port, 2048); 30591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err_5: 30601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef USE_DMAC 30611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds release_region(ashost->dma.io_port, 256); 30621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 30631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err_4: 30641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds release_region(ashost->card.io_page, 1); 30651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err_3: 30661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds release_region(ashost->card.io_intr, 1); 30671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err_2: 30681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds release_region(host->io_port + 0x800, 2); 30691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err_1: 30701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_host_put(host); 30711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds out: 30721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ret; 30731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 30741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __devexit acornscsi_remove(struct expansion_card *ec) 30761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 30771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *host = ecard_get_drvdata(ec); 30781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds AS_Host *ashost = (AS_Host *)host->hostdata; 30791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ecard_set_drvdata(ec, NULL); 30811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_remove_host(host); 30821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 30841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Put card into RESET state 30851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 30861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds outb(0x80, ashost->card.io_page); 30871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_irq(host->irq, ashost); 30891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds release_region(host->io_port + 0x800, 2); 30911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds release_region(ashost->card.io_intr, 1); 30921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds release_region(ashost->card.io_page, 1); 30931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds release_region(ashost->dma.io_port, 256); 30941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds release_region(host->io_port, 2048); 30951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msgqueue_free(&ashost->scsi.msgs); 30971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds queue_free(&ashost->queues.disconnected); 30981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds queue_free(&ashost->queues.issue); 30991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_host_put(host); 31001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 31011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 31021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const struct ecard_id acornscsi_cids[] = { 31031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { MANU_ACORN, PROD_ACORN_SCSI }, 31041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 0xffff, 0xffff }, 31051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 31061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 31071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct ecard_driver acornscsi_driver = { 31081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .probe = acornscsi_probe, 31091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .remove = __devexit_p(acornscsi_remove), 31101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .id_table = acornscsi_cids, 31111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .drv = { 31121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .name = "acornscsi", 31131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }, 31141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 31151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 31161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init acornscsi_init(void) 31171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 31181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ecard_register_driver(&acornscsi_driver); 31191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 31201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 31211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit acornscsi_exit(void) 31221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 31231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ecard_remove_driver(&acornscsi_driver); 31241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 31251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 31261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(acornscsi_init); 31271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(acornscsi_exit); 31281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 31291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR("Russell King"); 31301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION("AcornSCSI driver"); 31311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 3132