53c700.c revision df0ae2497ddefd72a87f3a3b34ff32455d7d4ae0
11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* -*- mode: c; c-basic-offset: 8 -*- */ 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* NCR (or Symbios) 53c700 and 53c700-66 Driver 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds**----------------------------------------------------------------------------- 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds** 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds** This program is free software; you can redistribute it and/or modify 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds** it under the terms of the GNU General Public License as published by 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds** the Free Software Foundation; either version 2 of the License, or 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds** (at your option) any later version. 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds** 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds** This program is distributed in the hope that it will be useful, 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds** but WITHOUT ANY WARRANTY; without even the implied warranty of 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds** GNU General Public License for more details. 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds** 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds** You should have received a copy of the GNU General Public License 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds** along with this program; if not, write to the Free Software 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds** 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds**----------------------------------------------------------------------------- 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Notes: 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This driver is designed exclusively for these chips (virtually the 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * earliest of the scripts engine chips). They need their own drivers 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * because they are missing so many of the scripts and snazzy register 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * features of their elder brothers (the 710, 720 and 770). 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The 700 is the lowliest of the line, it can only do async SCSI. 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The 700-66 can at least do synchronous SCSI up to 10MHz. 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The 700 chip has no host bus interface logic of its own. However, 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it is usually mapped to a location with well defined register 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * offsets. Therefore, if you can determine the base address and the 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * irq your board incorporating this chip uses, you can probably use 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this driver to run it (although you'll probably have to write a 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * minimal wrapper for the purpose---see the NCR_D700 driver for 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * details about how to do this). 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * TODO List: 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1. Better statistics in the proc fs 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2. Implement message queue (queues SCSI messages like commands) and make 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the abort and device reset functions use them. 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * */ 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* CHANGELOG 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Version 2.8 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Fixed bad bug affecting tag starvation processing (previously the 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * driver would hang the system if too many tags starved. Also fixed 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * bad bug having to do with 10 byte command processing and REQUEST 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SENSE (the command would loop forever getting a transfer length 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * mismatch in the CMD phase). 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Version 2.7 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Fixed scripts problem which caused certain devices (notably CDRWs) 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to hang on initial INQUIRY. Updated NCR_700_readl/writel to use 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * __raw_readl/writel for parisc compatibility (Thomas 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Bogendoerfer). Added missing SCp->request_bufflen initialisation 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for sense requests (Ryan Bradetich). 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Version 2.6 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Following test of the 64 bit parisc kernel by Richard Hirst, 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * several problems have now been corrected. Also adds support for 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * consistent memory allocation. 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Version 2.5 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * More Compatibility changes for 710 (now actually works). Enhanced 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * support for odd clock speeds which constrain SDTR negotiations. 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * correct cacheline separation for scsi messages and status for 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * incoherent architectures. Use of the pci mapping functions on 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * buffers to begin support for 64 bit drivers. 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Version 2.4 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Added support for the 53c710 chip (in 53c700 emulation mode only---no 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * special 53c710 instructions or registers are used). 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Version 2.3 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * More endianness/cache coherency changes. 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Better bad device handling (handles devices lying about tag 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * queueing support and devices which fail to provide sense data on 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * contingent allegiance conditions) 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Many thanks to Richard Hirst <rhirst@linuxcare.com> for patiently 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * debugging this driver on the parisc architecture and suggesting 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * many improvements and bug fixes. 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Thanks also go to Linuxcare Inc. for providing several PARISC 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * machines for me to debug the driver on. 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Version 2.2 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Made the driver mem or io mapped; added endian invariance; added 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dma cache flushing operations for architectures which need it; 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * added support for more varied clocking speeds. 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Version 2.1 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Initial modularisation from the D700. See NCR_D700.c for the rest of 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the changelog. 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * */ 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NCR_700_VERSION "2.8" 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/config.h> 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/kernel.h> 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/types.h> 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/string.h> 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/ioport.h> 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/delay.h> 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/spinlock.h> 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/completion.h> 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sched.h> 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/proc_fs.h> 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/blkdev.h> 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/interrupt.h> 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/dma.h> 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/system.h> 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/io.h> 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/pgtable.h> 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/byteorder.h> 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi.h> 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_cmnd.h> 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_dbg.h> 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_eh.h> 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_host.h> 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_tcq.h> 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_transport.h> 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_transport_spi.h> 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "53c700.h" 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* NOTE: For 64 bit drivers there are points in the code where we use 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * a non dereferenceable pointer to point to a structure in dma-able 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * memory (which is 32 bits) so that we can use all of the structure 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * operations but take the address at the end. This macro allows us 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to truncate the 64 bit pointer down to 32 bits without the compiler 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * complaining */ 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define to32bit(x) ((__u32)((unsigned long)(x))) 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define STATIC 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define STATIC static 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR("James Bottomley"); 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION("53c700 and 53c700-66 Driver"); 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* This is the script */ 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "53c700_d.h" 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int NCR_700_queuecommand(struct scsi_cmnd *, void (*done)(struct scsi_cmnd *)); 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int NCR_700_abort(struct scsi_cmnd * SCpnt); 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int NCR_700_bus_reset(struct scsi_cmnd * SCpnt); 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int NCR_700_host_reset(struct scsi_cmnd * SCpnt); 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void NCR_700_chip_setup(struct Scsi_Host *host); 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void NCR_700_chip_reset(struct Scsi_Host *host); 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int NCR_700_slave_configure(struct scsi_device *SDpnt); 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void NCR_700_slave_destroy(struct scsi_device *SDpnt); 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int NCR_700_change_queue_depth(struct scsi_device *SDpnt, int depth); 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int NCR_700_change_queue_type(struct scsi_device *SDpnt, int depth); 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC struct device_attribute *NCR_700_dev_attrs[]; 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC struct scsi_transport_template *NCR_700_transport_template = NULL; 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *NCR_700_phase[] = { 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "", 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "after selection", 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "before command phase", 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "after command phase", 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "after status phase", 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "after data in phase", 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "after data out phase", 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "during data phase", 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *NCR_700_condition[] = { 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "", 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "NOT MSG_OUT", 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "UNEXPECTED PHASE", 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "NOT MSG_IN", 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "UNEXPECTED MSG", 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "MSG_IN", 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "SDTR_MSG RECEIVED", 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "REJECT_MSG RECEIVED", 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "DISCONNECT_MSG RECEIVED", 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "MSG_OUT", 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "DATA_IN", 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *NCR_700_fatal_messages[] = { 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "unexpected message after reselection", 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "still MSG_OUT after message injection", 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "not MSG_IN after selection", 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "Illegal message length received", 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *NCR_700_SBCL_bits[] = { 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "IO ", 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "CD ", 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "MSG ", 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ATN ", 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "SEL ", 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "BSY ", 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ACK ", 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "REQ ", 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *NCR_700_SBCL_to_phase[] = { 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "DATA_OUT", 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "DATA_IN", 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "CMD_OUT", 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "STATE", 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ILLEGAL PHASE", 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ILLEGAL PHASE", 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "MSG OUT", 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "MSG IN", 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic __u8 NCR_700_SDTR_msg[] = { 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 0x01, /* Extended message */ 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 0x03, /* Extended message Length */ 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 0x01, /* SDTR Extended message */ 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_MIN_PERIOD, 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_MAX_OFFSET 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* This translates the SDTR message offset and period to a value 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * which can be loaded into the SXFER_REG. 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NOTE: According to SCSI-2, the true transfer period (in ns) is 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * actually four times this period value */ 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline __u8 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_offset_period_to_sxfer(struct NCR_700_Host_Parameters *hostdata, 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 offset, __u8 period) 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int XFERP; 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 min_xferp = (hostdata->chip710 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ? NCR_710_MIN_XFERP : NCR_700_MIN_XFERP); 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 max_offset = (hostdata->chip710 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ? NCR_710_MAX_OFFSET : NCR_700_MAX_OFFSET); 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(offset == 0) 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(period < hostdata->min_period) { 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "53c700: Period %dns is less than this chip's minimum, setting to %d\n", period*4, NCR_700_SDTR_msg[3]*4); 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds period = hostdata->min_period; 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds XFERP = (period*4 * hostdata->sync_clock)/1000 - 4; 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(offset > max_offset) { 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "53c700: Offset %d exceeds chip maximum, setting to %d\n", 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset, max_offset); 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset = max_offset; 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(XFERP < min_xferp) { 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "53c700: XFERP %d is less than minium, setting to %d\n", 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds XFERP, min_xferp); 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds XFERP = min_xferp; 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (offset & 0x0f) | (XFERP & 0x07)<<4; 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline __u8 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_get_SXFER(struct scsi_device *SDp) 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SDp->host->hostdata[0]; 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NCR_700_offset_period_to_sxfer(hostdata, 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_offset(SDp->sdev_target), 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_period(SDp->sdev_target)); 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct Scsi_Host * 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_detect(struct scsi_host_template *tpnt, 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata, struct device *dev) 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_addr_t pScript, pSlots; 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 *memory; 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 *script; 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *host; 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds static int banner = 0; 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int j; 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(tpnt->sdev_attrs == NULL) 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->sdev_attrs = NCR_700_dev_attrs; 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memory = dma_alloc_noncoherent(hostdata->dev, TOTAL_MEM_SIZE, 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &pScript, GFP_KERNEL); 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(memory == NULL) { 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "53c700: Failed to allocate memory for driver, detatching\n"); 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script = (__u32 *)memory; 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgin = memory + MSGIN_OFFSET; 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgout = memory + MSGOUT_OFFSET; 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->status = memory + STATUS_OFFSET; 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* all of these offsets are L1_CACHE_BYTES separated. It is fatal 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * if this isn't sufficient separation to avoid dma flushing issues */ 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BUG_ON(!dma_is_consistent(pScript) && L1_CACHE_BYTES < dma_get_cache_alignment()); 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->slots = (struct NCR_700_command_slot *)(memory + SLOTS_OFFSET); 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->dev = dev; 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pSlots = pScript + SLOTS_OFFSET; 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Fill in the missing routines from the host template */ 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->queuecommand = NCR_700_queuecommand; 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->eh_abort_handler = NCR_700_abort; 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->eh_bus_reset_handler = NCR_700_bus_reset; 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->eh_host_reset_handler = NCR_700_host_reset; 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->can_queue = NCR_700_COMMAND_SLOTS_PER_HOST; 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->sg_tablesize = NCR_700_SG_SEGMENTS; 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->cmd_per_lun = NCR_700_CMD_PER_LUN; 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->use_clustering = ENABLE_CLUSTERING; 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->slave_configure = NCR_700_slave_configure; 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->slave_destroy = NCR_700_slave_destroy; 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->change_queue_depth = NCR_700_change_queue_depth; 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->change_queue_type = NCR_700_change_queue_type; 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(tpnt->name == NULL) 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->name = "53c700"; 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(tpnt->proc_name == NULL) 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->proc_name = "53c700"; 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host = scsi_host_alloc(tpnt, 4); 3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!host) 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset(hostdata->slots, 0, sizeof(struct NCR_700_command_slot) 3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NCR_700_COMMAND_SLOTS_PER_HOST); 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(j = 0; j < NCR_700_COMMAND_SLOTS_PER_HOST; j++) { 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_addr_t offset = (dma_addr_t)((unsigned long)&hostdata->slots[j].SG[0] 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds - (unsigned long)&hostdata->slots[0].SG[0]); 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->slots[j].pSG = (struct NCR_700_SG_List *)((unsigned long)(pSlots + offset)); 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(j == 0) 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->free_list = &hostdata->slots[j]; 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->slots[j-1].ITL_forw = &hostdata->slots[j]; 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->slots[j].state = NCR_700_SLOT_FREE; 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(j = 0; j < sizeof(SCRIPT)/sizeof(SCRIPT[0]); j++) { 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script[j] = bS_to_host(SCRIPT[j]); 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* adjust all labels to be bus physical */ 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(j = 0; j < PATCHES; j++) { 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script[LABELPATCHES[j]] = bS_to_host(pScript + SCRIPT[LABELPATCHES[j]]); 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* now patch up fixed addresses. */ 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_32(script, MessageLocation, 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pScript + MSGOUT_OFFSET); 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_32(script, StatusAddress, 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pScript + STATUS_OFFSET); 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_32(script, ReceiveMsgAddress, 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pScript + MSGIN_OFFSET); 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->script = script; 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->pScript = pScript; 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_sync_single_for_device(hostdata->dev, pScript, sizeof(SCRIPT), DMA_TO_DEVICE); 3841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_FREE; 3851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = NULL; 3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->max_id = 7; 3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->max_lun = NCR_700_MAX_LUNS; 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BUG_ON(NCR_700_transport_template == NULL); 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->transportt = NCR_700_transport_template; 39056fece20086ebe32bce2c0d74ceadd516b56baae<jejb@mulgrave.(none)> host->unique_id = (unsigned long)hostdata->base; 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->eh_complete = NULL; 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->hostdata[0] = (unsigned long)hostdata; 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* kick the chip */ 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(0xff, host, CTEST9_REG); 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->chip710) 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->rev = (NCR_700_readb(host, CTEST8_REG)>>4) & 0x0f; 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->rev = (NCR_700_readb(host, CTEST7_REG)>>4) & 0x0f; 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->fast = (NCR_700_readb(host, CTEST9_REG) == 0); 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(banner == 0) { 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_NOTICE "53c700: Version " NCR_700_VERSION " By James.Bottomley@HansenPartnership.com\n"); 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds banner = 1; 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_NOTICE "scsi%d: %s rev %d %s\n", host->host_no, 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->chip710 ? "53c710" : 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (hostdata->fast ? "53c700-66" : "53c700"), 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->rev, hostdata->differential ? 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "(Differential)" : ""); 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* reset the chip */ 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_chip_reset(host); 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (scsi_add_host(host, dev)) { 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_printk(KERN_ERR, dev, "53c700: scsi_add_host failed\n"); 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_host_put(host); 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_signalling(host) = hostdata->differential ? SPI_SIGNAL_HVD : 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SPI_SIGNAL_SE; 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return host; 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_release(struct Scsi_Host *host) 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)host->hostdata[0]; 4291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_free_noncoherent(hostdata->dev, TOTAL_MEM_SIZE, 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->script, hostdata->pScript); 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline __u8 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_identify(int can_disconnect, __u8 lun) 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return IDENTIFY_BASE | 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((can_disconnect) ? 0x40 : 0) | 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (lun & NCR_700_LUN_MASK); 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function : static int data_residual (Scsi_Host *host) 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : return residual data count of what's in the chip. If you 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * really want to know what this function is doing, it's almost a 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * direct transcription of the algorithm described in the 53c710 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * guide, except that the DBC and DFIFO registers are only 6 bits 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * wide on a 53c700. 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Inputs : host - SCSI host */ 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_data_residual (struct Scsi_Host *host) { 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)host->hostdata[0]; 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int count, synchronous = 0; 4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int ddir; 4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->chip710) { 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count = ((NCR_700_readb(host, DFIFO_REG) & 0x7f) - 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (NCR_700_readl(host, DBC_REG) & 0x7f)) & 0x7f; 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count = ((NCR_700_readb(host, DFIFO_REG) & 0x3f) - 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (NCR_700_readl(host, DBC_REG) & 0x3f)) & 0x3f; 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->fast) 4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds synchronous = NCR_700_readb(host, SXFER_REG) & 0x0f; 4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* get the data direction */ 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ddir = NCR_700_readb(host, CTEST0_REG) & 0x01; 4731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ddir) { 4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Receive */ 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (synchronous) 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count += (NCR_700_readb(host, SSTAT2_REG) & 0xf0) >> 4; 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (NCR_700_readb(host, SSTAT1_REG) & SIDL_REG_FULL) 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ++count; 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Send */ 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 sstat = NCR_700_readb(host, SSTAT1_REG); 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sstat & SODL_REG_FULL) 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ++count; 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (synchronous && (sstat & SODR_REG_FULL)) 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ++count; 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(count) 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("RESIDUAL IS %d (ddir %d)\n", count, ddir); 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return count; 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* print out the SCSI wires and corresponding phase from the SBCL register 4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * in the chip */ 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline char * 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldssbcl_to_string(__u8 sbcl) 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds static char ret[256]; 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret[0]='\0'; 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i=0; i<8; i++) { 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if((1<<i) & sbcl) 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(ret, NCR_700_SBCL_bits[i]); 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(ret, NCR_700_SBCL_to_phase[sbcl & 0x07]); 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ret; 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline __u8 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsbitmap_to_number(__u8 bitmap) 5151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 i; 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i=0; i<8 && !(bitmap &(1<<i)); i++) 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ; 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return i; 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Pull a slot off the free list */ 5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC struct NCR_700_command_slot * 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfind_empty_slot(struct NCR_700_Host_Parameters *hostdata) 5261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = hostdata->free_list; 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(slot == NULL) { 5301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* sanity check */ 5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->command_slot_count != NCR_700_COMMAND_SLOTS_PER_HOST) 5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "SLOTS FULL, but count is %d, should be %d\n", hostdata->command_slot_count, NCR_700_COMMAND_SLOTS_PER_HOST); 5331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 5341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(slot->state != NCR_700_SLOT_FREE) 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* should panic! */ 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "BUSY SLOT ON FREE LIST!!!\n"); 5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->free_list = slot->ITL_forw; 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->ITL_forw = NULL; 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* NOTE: set the state to busy here, not queued, since this 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * indicates the slot is in use and cannot be run by the IRQ 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * finish routine. If we cannot queue the command when it 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * is properly build, we then change to NCR_700_SLOT_QUEUED */ 5491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->state = NCR_700_SLOT_BUSY; 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->command_slot_count++; 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return slot; 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfree_slot(struct NCR_700_command_slot *slot, 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata) 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if((slot->state & NCR_700_SLOT_MASK) != NCR_700_SLOT_MAGIC) { 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "53c700: SLOT %p is not MAGIC!!!\n", slot); 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(slot->state == NCR_700_SLOT_FREE) { 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "53c700: SLOT %p is FREE!!!\n", slot); 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->resume_offset = 0; 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->cmnd = NULL; 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->state = NCR_700_SLOT_FREE; 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->ITL_forw = hostdata->free_list; 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->free_list = slot; 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->command_slot_count--; 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* This routine really does very little. The command is indexed on 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds the ITL and (if tagged) the ITLQ lists in _queuecommand */ 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 5781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldssave_for_reselection(struct NCR_700_Host_Parameters *hostdata, 5791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp, __u32 dsp) 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Its just possible that this gets executed twice */ 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_command_slot *)SCp->host_scribble; 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->resume_offset = dsp; 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_FREE; 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = NULL; 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC inline void 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_unmap(struct NCR_700_Host_Parameters *hostdata, struct scsi_cmnd *SCp, 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot) 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp->sc_data_direction != DMA_NONE && 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->sc_data_direction != DMA_BIDIRECTIONAL) { 5981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp->use_sg) { 5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_unmap_sg(hostdata->dev, SCp->buffer, 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->use_sg, SCp->sc_data_direction); 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_unmap_single(hostdata->dev, slot->dma_handle, 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->request_bufflen, 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->sc_data_direction); 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC inline void 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_scsi_done(struct NCR_700_Host_Parameters *hostdata, 6111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp, int result) 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_FREE; 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = NULL; 6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = 6181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_command_slot *)SCp->host_scribble; 6191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_unmap(hostdata, SCp, slot); 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_unmap_single(hostdata->dev, slot->pCmd, 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sizeof(SCp->cmnd), DMA_TO_DEVICE); 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp->cmnd[0] == REQUEST_SENSE && SCp->cmnd[6] == NCR_700_INTERNAL_SENSE_MAGIC) { 6241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(" ORIGINAL CMD %p RETURNED %d, new return is %d sense is\n", 6261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp, SCp->cmnd[7], result); 6271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_sense("53c700", SCp); 6281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 6301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* restore the old result if the request sense was 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * successful */ 6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(result == 0) 6331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result = SCp->cmnd[7]; 6341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* now restore the original command */ 6351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy((void *) SCp->cmnd, (void *) SCp->data_cmnd, 6361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sizeof(SCp->data_cmnd)); 6371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->request_buffer = SCp->buffer; 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->request_bufflen = SCp->bufflen; 6391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->use_sg = SCp->old_use_sg; 6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->cmd_len = SCp->old_cmd_len; 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->sc_data_direction = SCp->sc_old_data_direction; 6421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->underflow = SCp->old_underflow; 6431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_slot(slot, hostdata); 6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(NCR_700_get_depth(SCp->device) == 0 || 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_get_depth(SCp->device) > SCp->device->queue_depth) 6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "Invalid depth in NCR_700_scsi_done(): %d\n", 6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_get_depth(SCp->device)); 6511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* NCR_700_DEBUG */ 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_depth(SCp->device, NCR_700_get_depth(SCp->device) - 1); 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->host_scribble = NULL; 6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->result = result; 6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->scsi_done(SCp); 6571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 6581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "53c700: SCSI DONE HAS NULL SCp\n"); 6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_internal_bus_reset(struct Scsi_Host *host) 6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Bus reset */ 6671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(ASSERT_RST, host, SCNTL1_REG); 6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(50); 6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(0, host, SCNTL1_REG); 6701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_chip_setup(struct Scsi_Host *host) 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)host->hostdata[0]; 6781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 dcntl_extra = 0; 6791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 min_period; 6801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 min_xferp = (hostdata->chip710 ? NCR_710_MIN_XFERP : NCR_700_MIN_XFERP); 6811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->chip710) { 6831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 burst_disable = hostdata->burst_disable 6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ? BURST_DISABLE : 0; 6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dcntl_extra = COMPAT_700_MODE; 6861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(dcntl_extra, host, DCNTL_REG); 6881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(BURST_LENGTH_8 | hostdata->dmode_extra, 6891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host, DMODE_710_REG); 6901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(burst_disable | (hostdata->differential ? 6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DIFF : 0), host, CTEST7_REG); 6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(BTB_TIMER_DISABLE, host, CTEST0_REG); 6931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(FULL_ARBITRATION | ENABLE_PARITY | PARITY 6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | AUTO_ATN, host, SCNTL0_REG); 6951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 6961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(BURST_LENGTH_8 | hostdata->dmode_extra, 6971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host, DMODE_700_REG); 6981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(hostdata->differential ? 6991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DIFF : 0, host, CTEST7_REG); 7001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->fast) { 7011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* this is for 700-66, does nothing on 700 */ 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(LAST_DIS_ENBL | ENABLE_ACTIVE_NEGATION 7031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | GENERATE_RECEIVE_PARITY, host, 7041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds CTEST8_REG); 7051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(FULL_ARBITRATION | ENABLE_PARITY 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | PARITY | AUTO_ATN, host, SCNTL0_REG); 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(1 << host->this_id, host, SCID_REG); 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(0, host, SBCL_REG); 7131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(ASYNC_OPERATION, host, SXFER_REG); 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(PHASE_MM_INT | SEL_TIMEOUT_INT | GROSS_ERR_INT | UX_DISC_INT 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | RST_INT | PAR_ERR_INT | SELECT_INT, host, SIEN_REG); 7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(ABORT_INT | INT_INST_INT | ILGL_INST_INT, host, DIEN_REG); 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(ENABLE_SELECT, host, SCNTL1_REG); 7201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->clock > 75) { 7211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "53c700: Clock speed %dMHz is too high: 75Mhz is the maximum this chip can be driven at\n", hostdata->clock); 7221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* do the best we can, but the async clock will be out 7231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * of spec: sync divider 2, async divider 3 */ 7241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("53c700: sync 2 async 3\n")); 7251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(SYNC_DIV_2_0, host, SBCL_REG); 7261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(ASYNC_DIV_3_0 | dcntl_extra, host, DCNTL_REG); 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->sync_clock = hostdata->clock/2; 7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(hostdata->clock > 50 && hostdata->clock <= 75) { 7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* sync divider 1.5, async divider 3 */ 7301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("53c700: sync 1.5 async 3\n")); 7311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(SYNC_DIV_1_5, host, SBCL_REG); 7321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(ASYNC_DIV_3_0 | dcntl_extra, host, DCNTL_REG); 7331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->sync_clock = hostdata->clock*2; 7341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->sync_clock /= 3; 7351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(hostdata->clock > 37 && hostdata->clock <= 50) { 7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* sync divider 1, async divider 2 */ 7381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("53c700: sync 1 async 2\n")); 7391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(SYNC_DIV_1_0, host, SBCL_REG); 7401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(ASYNC_DIV_2_0 | dcntl_extra, host, DCNTL_REG); 7411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->sync_clock = hostdata->clock; 7421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(hostdata->clock > 25 && hostdata->clock <=37) { 7431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* sync divider 1, async divider 1.5 */ 7441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("53c700: sync 1 async 1.5\n")); 7451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(SYNC_DIV_1_0, host, SBCL_REG); 7461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(ASYNC_DIV_1_5 | dcntl_extra, host, DCNTL_REG); 7471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->sync_clock = hostdata->clock; 7481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("53c700: sync 1 async 1\n")); 7501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(SYNC_DIV_1_0, host, SBCL_REG); 7511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(ASYNC_DIV_1_0 | dcntl_extra, host, DCNTL_REG); 7521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* sync divider 1, async divider 1 */ 7531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->sync_clock = hostdata->clock; 7541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Calculate the actual minimum period that can be supported 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * by our synchronous clock speed. See the 710 manual for 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * exact details of this calculation which is based on a 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * setting of the SXFER register */ 7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds min_period = 1000*(4+min_xferp)/(4*hostdata->sync_clock); 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->min_period = NCR_700_MIN_PERIOD; 7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(min_period > NCR_700_MIN_PERIOD) 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->min_period = min_period; 7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 7661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_chip_reset(struct Scsi_Host *host) 7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)host->hostdata[0]; 7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->chip710) { 7711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(SOFTWARE_RESET_710, host, ISTAT_REG); 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(100); 7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(0, host, ISTAT_REG); 7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(SOFTWARE_RESET, host, DCNTL_REG); 7771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(100); 7781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(0, host, DCNTL_REG); 7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mdelay(1000); 7831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_chip_setup(host); 7851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* The heart of the message processing engine is that the instruction 7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * immediately after the INT is the normal case (and so must be CLEAR 7891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ACK). If we want to do something else, we call that routine in 7901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * scripts and set temp to be the normal case + 8 (skipping the CLEAR 7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ACK) so that the routine returns correctly to resume its activity 7921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * */ 7931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC __u32 7941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsprocess_extended_message(struct Scsi_Host *host, 7951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata, 7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp, __u32 dsp, __u32 dsps) 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 resume_offset = dsp, temp = dsp + 8; 7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 pun = 0xff, lun = 0xff; 8001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 8021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pun = SCp->device->id; 8031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lun = SCp->device->lun; 8041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch(hostdata->msgin[2]) { 8071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case A_SDTR_MSG: 8081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL && NCR_700_is_flag_set(SCp->device, NCR_700_DEV_BEGIN_SYNC_NEGOTIATION)) { 8091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_target *starget = SCp->device->sdev_target; 8101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 period = hostdata->msgin[3]; 8111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 offset = hostdata->msgin[4]; 8121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(offset == 0 || period == 0) { 8141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset = 0; 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds period = 0; 8161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_offset(starget) = offset; 8191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_period(starget) = period; 8201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(NCR_700_is_flag_set(SCp->device, NCR_700_DEV_PRINT_SYNC_NEGOTIATION)) { 8221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_display_xfer_agreement(starget); 8231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_clear_flag(SCp->device, NCR_700_DEV_PRINT_SYNC_NEGOTIATION); 8241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_flag(SCp->device, NCR_700_DEV_NEGOTIATED_SYNC); 8271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_clear_flag(SCp->device, NCR_700_DEV_BEGIN_SYNC_NEGOTIATION); 8281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(NCR_700_get_SXFER(SCp->device), 8301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host, SXFER_REG); 8311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 8331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* SDTR message out of the blue, reject it */ 8341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "scsi%d Unexpected SDTR msg\n", 8351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no); 8361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgout[0] = A_REJECT_MSG; 8371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->msgout, 1, DMA_TO_DEVICE); 8381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_16(hostdata->script, MessageCount, 1); 8391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* SendMsgOut returns, so set up the return 8401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * address */ 8411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_SendMessageWithATN; 8421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case A_WDTR_MSG: 8461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "scsi%d: (%d:%d), Unsolicited WDTR after CMD, Rejecting\n", 8471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun); 8481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgout[0] = A_REJECT_MSG; 8491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->msgout, 1, DMA_TO_DEVICE); 8501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_16(hostdata->script, MessageCount, 1); 8511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_SendMessageWithATN; 8521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 8561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "scsi%d (%d:%d): Unexpected message %s: ", 8571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, 8581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_phase[(dsps & 0xf00) >> 8]); 8591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_msg(hostdata->msgin); 8601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("\n"); 8611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* just reject it */ 8621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgout[0] = A_REJECT_MSG; 8631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->msgout, 1, DMA_TO_DEVICE); 8641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_16(hostdata->script, MessageCount, 1); 8651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* SendMsgOut returns, so set up the return 8661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * address */ 8671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_SendMessageWithATN; 8681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writel(temp, host, TEMP_REG); 8701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return resume_offset; 8711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC __u32 8741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsprocess_message(struct Scsi_Host *host, struct NCR_700_Host_Parameters *hostdata, 8751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp, __u32 dsp, __u32 dsps) 8761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* work out where to return to */ 8781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 temp = dsp + 8, resume_offset = dsp; 8791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 pun = 0xff, lun = 0xff; 8801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 8821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pun = SCp->device->id; 8831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lun = SCp->device->lun; 8841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 8871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d (%d:%d): message %s: ", host->host_no, pun, lun, 8881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_phase[(dsps & 0xf00) >> 8]); 8891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_msg(hostdata->msgin); 8901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("\n"); 8911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 8921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch(hostdata->msgin[0]) { 8941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case A_EXTENDED_MSG: 8961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = process_extended_message(host, hostdata, SCp, 8971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsp, dsps); 8981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case A_REJECT_MSG: 9011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL && NCR_700_is_flag_set(SCp->device, NCR_700_DEV_BEGIN_SYNC_NEGOTIATION)) { 9021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Rejected our sync negotiation attempt */ 9031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_period(SCp->device->sdev_target) = 9041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_offset(SCp->device->sdev_target) = 0; 9051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_flag(SCp->device, NCR_700_DEV_NEGOTIATED_SYNC); 9061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_clear_flag(SCp->device, NCR_700_DEV_BEGIN_SYNC_NEGOTIATION); 9071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(SCp != NULL && NCR_700_get_tag_neg_state(SCp->device) == NCR_700_DURING_TAG_NEGOTIATION) { 9081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* rejected our first simple tag message */ 9091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "scsi%d (%d:%d) Rejected first tag queue attempt, turning off tag queueing\n", host->host_no, pun, lun); 9101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* we're done negotiating */ 9111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_tag_neg_state(SCp->device, NCR_700_FINISHED_TAG_NEGOTIATION); 9121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->tag_negotiated &= ~(1<<SCp->device->id); 9131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->device->tagged_supported = 0; 9141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_deactivate_tcq(SCp->device, host->cmd_per_lun); 9151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 9161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "scsi%d (%d:%d) Unexpected REJECT Message %s\n", 9171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, 9181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_phase[(dsps & 0xf00) >> 8]); 9191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* however, just ignore it */ 9201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case A_PARITY_ERROR_MSG: 9241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d (%d:%d) Parity Error!\n", host->host_no, 9251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pun, lun); 9261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(host); 9271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case A_SIMPLE_TAG_MSG: 9291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "scsi%d (%d:%d) SIMPLE TAG %d %s\n", host->host_no, 9301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pun, lun, hostdata->msgin[1], 9311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_phase[(dsps & 0xf00) >> 8]); 9321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* just ignore it */ 9331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 9351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "scsi%d (%d:%d): Unexpected message %s: ", 9361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, 9371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_phase[(dsps & 0xf00) >> 8]); 9381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_msg(hostdata->msgin); 9401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("\n"); 9411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* just reject it */ 9421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgout[0] = A_REJECT_MSG; 9431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->msgout, 1, DMA_TO_DEVICE); 9441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_16(hostdata->script, MessageCount, 1); 9451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* SendMsgOut returns, so set up the return 9461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * address */ 9471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_SendMessageWithATN; 9481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writel(temp, host, TEMP_REG); 9521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set us up to receive another message */ 9531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->msgin, MSG_ARRAY_SIZE, DMA_FROM_DEVICE); 9541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return resume_offset; 9551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC __u32 9581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsprocess_script_interrupt(__u32 dsps, __u32 dsp, struct scsi_cmnd *SCp, 9591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *host, 9601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata) 9611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 resume_offset = 0; 9631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 pun = 0xff, lun=0xff; 9641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 9661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pun = SCp->device->id; 9671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lun = SCp->device->lun; 9681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(dsps == A_GOOD_STATUS_AFTER_STATUS) { 9711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG((" COMMAND COMPLETE, status=%02x\n", 9721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->status[0])); 9731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* OK, if TCQ still under negotiation, we now know it works */ 9741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (NCR_700_get_tag_neg_state(SCp->device) == NCR_700_DURING_TAG_NEGOTIATION) 9751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_tag_neg_state(SCp->device, 9761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_FINISHED_TAG_NEGOTIATION); 9771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* check for contingent allegiance contitions */ 9791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(status_byte(hostdata->status[0]) == CHECK_CONDITION || 9801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status_byte(hostdata->status[0]) == COMMAND_TERMINATED) { 9811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = 9821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_command_slot *)SCp->host_scribble; 9831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp->cmnd[0] == REQUEST_SENSE) { 9841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* OOPS: bad device, returning another 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * contingent allegiance condition */ 9861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d (%d:%d) broken device is looping in contingent allegiance: ignoring\n", host->host_no, pun, lun); 9871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_scsi_done(hostdata, SCp, hostdata->status[0]); 9881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 9891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_DEBUG 9901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 9911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(" cmd %p has status %d, requesting sense\n", 9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp, hostdata->status[0]); 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 9941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* we can destroy the command here 9951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * because the contingent allegiance 9961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * condition will cause a retry which 9971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * will re-copy the command from the 9981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * saved data_cmnd. We also unmap any 9991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * data associated with the command 10001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * here */ 10011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_unmap(hostdata, SCp, slot); 10021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->cmnd[0] = REQUEST_SENSE; 10041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->cmnd[1] = (SCp->device->lun & 0x7) << 5; 10051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->cmnd[2] = 0; 10061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->cmnd[3] = 0; 10071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->cmnd[4] = sizeof(SCp->sense_buffer); 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->cmnd[5] = 0; 10091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->cmd_len = 6; 10101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Here's a quiet hack: the 10111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * REQUEST_SENSE command is six bytes, 10121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * so store a flag indicating that 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this was an internal sense request 10141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * and the original status at the end 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * of the command */ 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->cmnd[6] = NCR_700_INTERNAL_SENSE_MAGIC; 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->cmnd[7] = hostdata->status[0]; 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->use_sg = 0; 10191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->sc_data_direction = DMA_FROM_DEVICE; 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_sync_single_for_device(hostdata->dev, slot->pCmd, 10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->cmd_len, DMA_TO_DEVICE); 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->request_bufflen = sizeof(SCp->sense_buffer); 10231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->dma_handle = dma_map_single(hostdata->dev, SCp->sense_buffer, sizeof(SCp->sense_buffer), DMA_FROM_DEVICE); 10241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[0].ins = bS_to_host(SCRIPT_MOVE_DATA_IN | sizeof(SCp->sense_buffer)); 10251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[0].pAddr = bS_to_host(slot->dma_handle); 10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[1].ins = bS_to_host(SCRIPT_RETURN); 10271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[1].pAddr = 0; 10281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->resume_offset = hostdata->pScript; 10291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(slot->SG, sizeof(slot->SG[0])*2, DMA_TO_DEVICE); 10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(SCp->sense_buffer, sizeof(SCp->sense_buffer), DMA_FROM_DEVICE); 10311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* queue the command for reissue */ 10331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->state = NCR_700_SLOT_QUEUED; 10341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_FREE; 10351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = NULL; 10361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 10381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // Currently rely on the mid layer evaluation 10391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // of the tag queuing capability 10401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // 10411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds //if(status_byte(hostdata->status[0]) == GOOD && 10421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // SCp->cmnd[0] == INQUIRY && SCp->use_sg == 0) { 10431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // /* Piggy back the tag queueing support 10441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // * on this command */ 10451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // dma_sync_single_for_cpu(hostdata->dev, 10461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // slot->dma_handle, 10471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // SCp->request_bufflen, 10481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // DMA_FROM_DEVICE); 10491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // if(((char *)SCp->request_buffer)[7] & 0x02) { 10501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // printk(KERN_INFO "scsi%d: (%d:%d) Enabling Tag Command Queuing\n", host->host_no, pun, lun); 10511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // hostdata->tag_negotiated |= (1<<SCp->device->id); 10521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // NCR_700_set_flag(SCp->device, NCR_700_DEV_BEGIN_TAG_QUEUEING); 10531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // } else { 10541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // NCR_700_clear_flag(SCp->device, NCR_700_DEV_BEGIN_TAG_QUEUEING); 10551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // hostdata->tag_negotiated &= ~(1<<SCp->device->id); 10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // } 10571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds //} 10581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_scsi_done(hostdata, SCp, hostdata->status[0]); 10591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if((dsps & 0xfffff0f0) == A_UNEXPECTED_PHASE) { 10611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 i = (dsps & 0xf00) >> 8; 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d), UNEXPECTED PHASE %s (%s)\n", 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, 10651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_phase[i], 10661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbcl_to_string(NCR_700_readb(host, SBCL_REG))); 10671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR " len = %d, cmd =", SCp->cmd_len); 10681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 10691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(host); 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if((dsps & 0xfffff000) == A_FATAL) { 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i = (dsps & 0xfff); 10731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) FATAL ERROR: %s\n", 10751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, NCR_700_fatal_messages[i]); 10761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(dsps == A_FATAL_ILLEGAL_MSG_LENGTH) { 10771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR " msg begins %02x %02x\n", 10781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgin[0], hostdata->msgin[1]); 10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(host); 10811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if((dsps & 0xfffff0f0) == A_DISCONNECT) { 10821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 i = (dsps & 0xf00) >> 8; 10841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d: (%d:%d), DISCONNECTED (%d) %s\n", 10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, 10871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds i, NCR_700_phase[i]); 10881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 10891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds save_for_reselection(hostdata, SCp, dsp); 10901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(dsps == A_RESELECTION_IDENTIFIED) { 10921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 lun; 10931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot; 10941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 reselection_id = hostdata->reselection_id; 10951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_device *SDp; 10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lun = hostdata->msgin[0] & 0x1f; 10981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->reselection_id = 0xff; 11001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("scsi%d: (%d:%d) RESELECTED!\n", 11011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, reselection_id, lun)); 11021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear the reselection indicator */ 11031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SDp = __scsi_device_lookup(host, 0, reselection_id, lun); 11041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(unlikely(SDp == NULL)) { 11051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) HAS NO device\n", 11061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, reselection_id, lun); 11071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BUG(); 11081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->msgin[1] == A_SIMPLE_TAG_MSG) { 11101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp = scsi_find_tag(SDp, hostdata->msgin[2]); 11111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(unlikely(SCp == NULL)) { 11121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) no saved request for tag %d\n", 11131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, reselection_id, lun, hostdata->msgin[2]); 11141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BUG(); 11151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot = (struct NCR_700_command_slot *)SCp->host_scribble; 11181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("53c700: %d:%d:%d, reselection is tag %d, slot %p(%d)\n", 11191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, SDp->id, SDp->lun, 11201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgin[2], slot, slot->tag)); 11211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 11221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp = scsi_find_tag(SDp, SCSI_NO_TAG); 11231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(unlikely(SCp == NULL)) { 11241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) no saved request for untagged cmd\n", 11251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, reselection_id, lun); 11261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BUG(); 11271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot = (struct NCR_700_command_slot *)SCp->host_scribble; 11291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(slot == NULL) { 11321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) RESELECTED but no saved command (MSG = %02x %02x %02x)!!\n", 11331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, reselection_id, lun, 11341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgin[0], hostdata->msgin[1], 11351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgin[2]); 11361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 11371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->state != NCR_700_HOST_BUSY) 11381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: FATAL, host not busy during valid reselection!\n", 11391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no); 11401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = slot->resume_offset; 11411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = slot->cmnd; 11421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* re-patch for this command */ 11441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_32_abs(hostdata->script, CommandAddress, 11451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->pCmd); 11461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_16(hostdata->script, 11471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds CommandCount, slot->cmnd->cmd_len); 11481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_32_abs(hostdata->script, SGScriptStartAddress, 11491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds to32bit(&slot->pSG[0].ins)); 11501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Note: setting SXFER only works if we're 11521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * still in the MESSAGE phase, so it is vital 11531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * that ACK is still asserted when we process 11541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the reselection message. The resume offset 11551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * should therefore always clear ACK */ 11561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(NCR_700_get_SXFER(hostdata->cmd->device), 11571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host, SXFER_REG); 11581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->msgin, 11591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MSG_ARRAY_SIZE, DMA_FROM_DEVICE); 11601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->msgout, 11611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MSG_ARRAY_SIZE, DMA_TO_DEVICE); 11621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* I'm just being paranoid here, the command should 11631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * already have been flushed from the cache */ 11641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(slot->cmnd->cmnd, 11651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->cmnd->cmd_len, DMA_TO_DEVICE); 11661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(dsps == A_RESELECTED_DURING_SELECTION) { 11711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* This section is full of debugging code because I've 11731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * never managed to reach it. I think what happens is 11741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * that, because the 700 runs with selection 11751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * interrupts enabled the whole time that we take a 11761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * selection interrupt before we manage to get to the 11771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * reselected script interrupt */ 11781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 reselection_id = NCR_700_readb(host, SFBR_REG); 11801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot; 11811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Take out our own ID */ 11831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds reselection_id &= ~(1<<host->this_id); 11841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* I've never seen this happen, so keep this as a printk rather 11861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * than a debug */ 11871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "scsi%d: (%d:%d) RESELECTION DURING SELECTION, dsp=%08x[%04x] state=%d, count=%d\n", 11881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, reselection_id, lun, dsp, dsp - hostdata->pScript, hostdata->state, hostdata->command_slot_count); 11891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME: DEBUGGING CODE */ 11921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 SG = (__u32)bS_to_cpu(hostdata->script[A_SGScriptStartAddress_used[0]]); 11931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 11941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i=0; i< NCR_700_COMMAND_SLOTS_PER_HOST; i++) { 11961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SG >= to32bit(&hostdata->slots[i].pSG[0]) 11971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && SG <= to32bit(&hostdata->slots[i].pSG[NCR_700_SG_SEGMENTS])) 11981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "IDENTIFIED SG segment as being %08x in slot %p, cmd %p, slot->resume_offset=%08x\n", SG, &hostdata->slots[i], hostdata->slots[i].cmnd, hostdata->slots[i].resume_offset); 12011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp = hostdata->slots[i].cmnd; 12021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 12051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot = (struct NCR_700_command_slot *)SCp->host_scribble; 12061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* change slot from busy to queued to redo command */ 12071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->state = NCR_700_SLOT_QUEUED; 12081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = NULL; 12101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(reselection_id == 0) { 12121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->reselection_id == 0xff) { 12131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: Invalid reselection during selection!!\n", host->host_no); 12141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 12151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 12161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: script reselected and we took a selection interrupt\n", 12171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no); 12181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds reselection_id = hostdata->reselection_id; 12191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 12211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* convert to real ID */ 12231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds reselection_id = bitmap_to_number(reselection_id); 12241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->reselection_id = reselection_id; 12261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* just in case we have a stale simple tag message, clear it */ 12271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgin[1] = 0; 12281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->msgin, 12291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MSG_ARRAY_SIZE, DMA_BIDIRECTIONAL); 12301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->tag_negotiated & (1<<reselection_id)) { 12311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_GetReselectionWithTag; 12321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 12331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_GetReselectionData; 12341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(dsps == A_COMPLETED_SELECTION_AS_TARGET) { 12361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* we've just disconnected from the bus, do nothing since 12371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * a return here will re-run the queued command slot 12381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * that may have been interrupted by the initial selection */ 12391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG((" SELECTION COMPLETED\n")); 12401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if((dsps & 0xfffff0f0) == A_MSG_IN) { 12411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = process_message(host, hostdata, SCp, 12421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsp, dsps); 12431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if((dsps & 0xfffff000) == 0) { 12441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 i = (dsps & 0xf0) >> 4, j = (dsps & 0xf00) >> 8; 12451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d), unhandled script condition %s %s at %04x\n", 12461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, NCR_700_condition[i], 12471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_phase[j], dsp - hostdata->pScript); 12481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 12491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 12501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp->use_sg) { 12521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i = 0; i < SCp->use_sg + 1; i++) { 12531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO " SG[%d].length = %d, move_insn=%08x, addr %08x\n", i, ((struct scatterlist *)SCp->buffer)[i].length, ((struct NCR_700_command_slot *)SCp->host_scribble)->SG[i].ins, ((struct NCR_700_command_slot *)SCp->host_scribble)->SG[i].pAddr); 12541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(host); 12581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if((dsps & 0xfffff000) == A_DEBUG_INTERRUPT) { 12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_NOTICE "scsi%d (%d:%d) DEBUG INTERRUPT %d AT %08x[%04x], continuing\n", 12601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, dsps & 0xfff, dsp, dsp - hostdata->pScript); 12611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = dsp; 12621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 12631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d), unidentified script interrupt 0x%x at %04x\n", 12641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, dsps, dsp - hostdata->pScript); 12651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(host); 12661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return resume_offset; 12681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* We run the 53c700 with selection interrupts always enabled. This 12711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * means that the chip may be selected as soon as the bus frees. On a 12721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * busy bus, this can be before the scripts engine finishes its 12731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * processing. Therefore, part of the selection processing has to be 12741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to find out what the scripts engine is doing and complete the 12751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * function if necessary (i.e. process the pending disconnect or save 12761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the interrupted initial selection */ 12771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC inline __u32 12781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsprocess_selection(struct Scsi_Host *host, __u32 dsp) 12791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 id = 0; /* Squash compiler warning */ 12811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int count = 0; 12821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 resume_offset = 0; 12831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 12841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)host->hostdata[0]; 12851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp = hostdata->cmd; 12861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 sbcl; 12871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(count = 0; count < 5; count++) { 12891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id = NCR_700_readb(host, hostdata->chip710 ? 12901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds CTEST9_REG : SFBR_REG); 12911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Take out our own ID */ 12931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id &= ~(1<<host->this_id); 12941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(id != 0) 12951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 12961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(5); 12971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbcl = NCR_700_readb(host, SBCL_REG); 12991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if((sbcl & SBCL_IO) == 0) { 13001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* mark as having been selected rather than reselected */ 13011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id = 0xff; 13021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 13031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* convert to real ID */ 13041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->reselection_id = id = bitmap_to_number(id); 13051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("scsi%d: Reselected by %d\n", 13061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, id)); 13071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->state == NCR_700_HOST_BUSY && SCp != NULL) { 13091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = 13101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_command_slot *)SCp->host_scribble; 13111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG((" ID %d WARNING: RESELECTION OF BUSY HOST, saving cmd %p, slot %p, addr %x [%04x], resume %x!\n", id, hostdata->cmd, slot, dsp, dsp - hostdata->pScript, resume_offset)); 13121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch(dsp - hostdata->pScript) { 13141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect1: 13151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect2: 13161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds save_for_reselection(hostdata, SCp, Ent_Disconnect2 + hostdata->pScript); 13171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect3: 13191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect4: 13201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds save_for_reselection(hostdata, SCp, Ent_Disconnect4 + hostdata->pScript); 13211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect5: 13231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect6: 13241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds save_for_reselection(hostdata, SCp, Ent_Disconnect6 + hostdata->pScript); 13251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect7: 13271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect8: 13281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds save_for_reselection(hostdata, SCp, Ent_Disconnect8 + hostdata->pScript); 13291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Finish1: 13311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Finish2: 13321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds process_script_interrupt(A_GOOD_STATUS_AFTER_STATUS, dsp, SCp, host, hostdata); 13331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 13361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->state = NCR_700_SLOT_QUEUED; 13371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_BUSY; 13411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = NULL; 13421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear any stale simple tag message */ 13431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgin[1] = 0; 13441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->msgin, MSG_ARRAY_SIZE, 13451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DMA_BIDIRECTIONAL); 13461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(id == 0xff) { 13481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Selected as target, Ignore */ 13491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_SelectedAsTarget; 13501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(hostdata->tag_negotiated & (1<<id)) { 13511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_GetReselectionWithTag; 13521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 13531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_GetReselectionData; 13541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return resume_offset; 13561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void 13591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_clear_fifo(struct Scsi_Host *host) { 13601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const struct NCR_700_Host_Parameters *hostdata 13611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds = (struct NCR_700_Host_Parameters *)host->hostdata[0]; 13621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->chip710) { 13631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(CLR_FIFO_710, host, CTEST8_REG); 13641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 13651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(CLR_FIFO, host, DFIFO_REG); 13661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void 13701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_flush_fifo(struct Scsi_Host *host) { 13711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const struct NCR_700_Host_Parameters *hostdata 13721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds = (struct NCR_700_Host_Parameters *)host->hostdata[0]; 13731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->chip710) { 13741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(FLUSH_DMA_FIFO_710, host, CTEST8_REG); 13751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(10); 13761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(0, host, CTEST8_REG); 13771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 13781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(FLUSH_DMA_FIFO, host, DFIFO_REG); 13791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(10); 13801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(0, host, DFIFO_REG); 13811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* The queue lock with interrupts disabled must be held on entry to 13861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this function */ 13871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int 13881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_start_command(struct scsi_cmnd *SCp) 13891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = 13911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_command_slot *)SCp->host_scribble; 13921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 13931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SCp->device->host->hostdata[0]; 13941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u16 count = 1; /* for IDENTIFY message */ 13951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->state != NCR_700_HOST_FREE) { 13971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* keep this inside the lock to close the race window where 13981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the running command finishes on another CPU while we don't 13991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * change the state to queued on this one */ 14001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->state = NCR_700_SLOT_QUEUED; 14011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("scsi%d: host busy, queueing command %p, slot %p\n", 14031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->device->host->host_no, slot->cmnd, slot)); 14041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 14051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_BUSY; 14071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = SCp; 14081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->state = NCR_700_SLOT_BUSY; 14091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* keep interrupts disabled until we have the command correctly 14101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * set up so we cannot take a selection interrupt */ 14111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgout[0] = NCR_700_identify(SCp->cmnd[0] != REQUEST_SENSE, 14131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->device->lun); 14141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* for INQUIRY or REQUEST_SENSE commands, we cannot be sure 14151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * if the negotiated transfer parameters still hold, so 14161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * always renegotiate them */ 14171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp->cmnd[0] == INQUIRY || SCp->cmnd[0] == REQUEST_SENSE) { 14181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_clear_flag(SCp->device, NCR_700_DEV_NEGOTIATED_SYNC); 14191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* REQUEST_SENSE is asking for contingent I_T_L(_Q) status. 14221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If a contingent allegiance condition exists, the device 14231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * will refuse all tags, so send the request sense as untagged 14241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * */ 14251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if((hostdata->tag_negotiated & (1<<SCp->device->id)) 14261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && (slot->tag != SCSI_NO_TAG && SCp->cmnd[0] != REQUEST_SENSE)) { 14271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count += scsi_populate_tag_msg(SCp, &hostdata->msgout[count]); 14281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->fast && 14311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_is_flag_clear(SCp->device, NCR_700_DEV_NEGOTIATED_SYNC)) { 14321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(&hostdata->msgout[count], NCR_700_SDTR_msg, 14331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sizeof(NCR_700_SDTR_msg)); 14341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgout[count+3] = spi_period(SCp->device->sdev_target); 14351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgout[count+4] = spi_offset(SCp->device->sdev_target); 14361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count += sizeof(NCR_700_SDTR_msg); 14371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_flag(SCp->device, NCR_700_DEV_BEGIN_SYNC_NEGOTIATION); 14381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_16(hostdata->script, MessageCount, count); 14411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_ID(hostdata->script, 14441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds Device_ID, 1<<SCp->device->id); 14451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_32_abs(hostdata->script, CommandAddress, 14471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->pCmd); 14481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_16(hostdata->script, CommandCount, SCp->cmd_len); 14491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* finally plumb the beginning of the SG list into the script 14501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * */ 14511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_32_abs(hostdata->script, SGScriptStartAddress, 14521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds to32bit(&slot->pSG[0].ins)); 14531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_clear_fifo(SCp->device->host); 14541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(slot->resume_offset == 0) 14561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->resume_offset = hostdata->pScript; 14571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* now perform all the writebacks and invalidates */ 14581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->msgout, count, DMA_TO_DEVICE); 14591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->msgin, MSG_ARRAY_SIZE, 14601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DMA_FROM_DEVICE); 14611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(SCp->cmnd, SCp->cmd_len, DMA_TO_DEVICE); 14621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->status, 1, DMA_FROM_DEVICE); 14631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set the synchronous period/offset */ 14651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(NCR_700_get_SXFER(SCp->device), 14661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->device->host, SXFER_REG); 14671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writel(slot->temp, SCp->device->host, TEMP_REG); 14681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writel(slot->resume_offset, SCp->device->host, DSP_REG); 14691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 14711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsirqreturn_t 14741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_intr(int irq, void *dev_id, struct pt_regs *regs) 14751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *host = (struct Scsi_Host *)dev_id; 14771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 14781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)host->hostdata[0]; 14791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 istat; 14801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 resume_offset = 0; 14811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 pun = 0xff, lun = 0xff; 14821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 14831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int handled = 0; 14841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Use the host lock to serialise acess to the 53c700 14861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * hardware. Note: In future, we may need to take the queue 14871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * lock to enter the done routines. When that happens, we 14881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * need to ensure that for this driver, the host lock and the 14891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * queue lock point to the same thing. */ 14901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(host->host_lock, flags); 14911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if((istat = NCR_700_readb(host, ISTAT_REG)) 14921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds & (SCSI_INT_PENDING | DMA_INT_PENDING)) { 14931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 dsps; 14941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 sstat0 = 0, dstat = 0; 14951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 dsp; 14961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp = hostdata->cmd; 14971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enum NCR_700_Host_State state; 14981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds handled = 1; 15001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds state = hostdata->state; 15011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp = hostdata->cmd; 15021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(istat & SCSI_INT_PENDING) { 15041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(10); 15051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sstat0 = NCR_700_readb(host, SSTAT0_REG); 15071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(istat & DMA_INT_PENDING) { 15101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(10); 15111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dstat = NCR_700_readb(host, DSTAT_REG); 15131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsps = NCR_700_readl(host, DSPS_REG); 15161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsp = NCR_700_readl(host, DSP_REG); 15171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("scsi%d: istat %02x sstat0 %02x dstat %02x dsp %04x[%08x] dsps 0x%x\n", 15191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, istat, sstat0, dstat, 15201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (dsp - (__u32)(hostdata->pScript))/4, 15211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsp, dsps)); 15221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 15241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pun = SCp->device->id; 15251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lun = SCp->device->lun; 15261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(sstat0 & SCSI_RESET_DETECTED) { 15291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_device *SDp; 15301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 15311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_BUSY; 15331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: Bus Reset detected, executing command %p, slot %p, dsp %08x[%04x]\n", 15351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, SCp, SCp == NULL ? NULL : SCp->host_scribble, dsp, dsp - hostdata->pScript); 15361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_report_bus_reset(host, 0); 15381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear all the negotiated parameters */ 15401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __shost_for_each_device(SDp, host) 15411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SDp->hostdata = NULL; 15421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear all the slots and their pending commands */ 15441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i = 0; i < NCR_700_COMMAND_SLOTS_PER_HOST; i++) { 15451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp; 15461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = 15471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &hostdata->slots[i]; 15481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(slot->state == NCR_700_SLOT_FREE) 15501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 15511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp = slot->cmnd; 15531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR " failing command because of reset, slot %p, cmnd %p\n", 15541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot, SCp); 15551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_slot(slot, hostdata); 15561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->host_scribble = NULL; 15571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_depth(SCp->device, 0); 15581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* NOTE: deadlock potential here: we 15591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * rely on mid-layer guarantees that 15601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * scsi_done won't try to issue the 15611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * command again otherwise we'll 15621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * deadlock on the 15631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * hostdata->state_lock */ 15641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->result = DID_RESET << 16; 15651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->scsi_done(SCp); 15661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mdelay(25); 15681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_chip_setup(host); 15691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_FREE; 15711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = NULL; 15721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* signal back if this was an eh induced reset */ 15731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->eh_complete != NULL) 15741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds complete(hostdata->eh_complete); 15751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_unlock; 15761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(sstat0 & SELECTION_TIMEOUT) { 15771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("scsi%d: (%d:%d) selection timeout\n", 15781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun)); 15791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_scsi_done(hostdata, SCp, DID_NO_CONNECT<<16); 15801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(sstat0 & PHASE_MISMATCH) { 15811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = (SCp == NULL) ? NULL : 15821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_command_slot *)SCp->host_scribble; 15831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(dsp == Ent_SendMessage + 8 + hostdata->pScript) { 15851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* It wants to reply to some part of 15861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * our message */ 15871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 15881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 temp = NCR_700_readl(host, TEMP_REG); 15891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int count = (hostdata->script[Ent_SendMessage/4] & 0xffffff) - ((NCR_700_readl(host, DBC_REG) & 0xffffff) + NCR_700_data_residual(host)); 15901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d (%d:%d) PHASE MISMATCH IN SEND MESSAGE %d remain, return %p[%04x], phase %s\n", host->host_no, pun, lun, count, (void *)temp, temp - hostdata->pScript, sbcl_to_string(NCR_700_readb(host, SBCL_REG))); 15911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 15921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_SendMessagePhaseMismatch; 15931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(dsp >= to32bit(&slot->pSG[0].ins) && 15941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsp <= to32bit(&slot->pSG[NCR_700_SG_SEGMENTS].ins)) { 15951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int data_transfer = NCR_700_readl(host, DBC_REG) & 0xffffff; 15961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int SGcount = (dsp - to32bit(&slot->pSG[0].ins))/sizeof(struct NCR_700_SG_List); 15971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int residual = NCR_700_data_residual(host); 15981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 15991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 16001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 naddr = NCR_700_readl(host, DNAD_REG); 16011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d: (%d:%d) Expected phase mismatch in slot->SG[%d], transferred 0x%x\n", 16031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, 16041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SGcount, data_transfer); 16051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 16061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(residual) { 16071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d: (%d:%d) Expected phase mismatch in slot->SG[%d], transferred 0x%x, residual %d\n", 16081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, 16091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SGcount, data_transfer, residual); 16101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 16121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data_transfer += residual; 16131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(data_transfer != 0) { 16151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int count; 16161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 pAddr; 16171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SGcount--; 16191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count = (bS_to_cpu(slot->SG[SGcount].ins) & 0x00ffffff); 16211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("DATA TRANSFER MISMATCH, count = %d, transferred %d\n", count, count-data_transfer)); 16221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[SGcount].ins &= bS_to_host(0xff000000); 16231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[SGcount].ins |= bS_to_host(data_transfer); 16241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pAddr = bS_to_cpu(slot->SG[SGcount].pAddr); 16251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pAddr += (count - data_transfer); 16261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 16271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(pAddr != naddr) { 16281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d (%d:%d) transfer mismatch pAddr=%lx, naddr=%lx, data_transfer=%d, residual=%d\n", host->host_no, pun, lun, (unsigned long)pAddr, (unsigned long)naddr, data_transfer, residual); 16291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 16311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[SGcount].pAddr = bS_to_host(pAddr); 16321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set the executed moves to nops */ 16341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i=0; i<SGcount; i++) { 16351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[i].ins = bS_to_host(SCRIPT_NOP); 16361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[i].pAddr = 0; 16371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(slot->SG, sizeof(slot->SG), DMA_TO_DEVICE); 16391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* and pretend we disconnected after 16401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the command phase */ 16411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_MsgInDuringData; 16421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* make sure all the data is flushed */ 16431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_flush_fifo(host); 16441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 16451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 sbcl = NCR_700_readb(host, SBCL_REG); 16461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) phase mismatch at %04x, phase %s\n", 16471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, dsp - hostdata->pScript, sbcl_to_string(sbcl)); 16481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(host); 16491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(sstat0 & SCSI_GROSS_ERROR) { 16521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) GROSS ERROR\n", 16531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun); 16541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_scsi_done(hostdata, SCp, DID_ERROR<<16); 16551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(sstat0 & PARITY_ERROR) { 16561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) PARITY ERROR\n", 16571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun); 16581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_scsi_done(hostdata, SCp, DID_ERROR<<16); 16591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(dstat & SCRIPT_INT_RECEIVED) { 16601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("scsi%d: (%d:%d) ====>SCRIPT INTERRUPT<====\n", 16611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun)); 16621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = process_script_interrupt(dsps, dsp, SCp, host, hostdata); 16631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(dstat & (ILGL_INST_DETECTED)) { 16641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) Illegal Instruction detected at 0x%08x[0x%x]!!!\n" 16651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds " Please email James.Bottomley@HansenPartnership.com with the details\n", 16661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, 16671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsp, dsp - hostdata->pScript); 16681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_scsi_done(hostdata, SCp, DID_ERROR<<16); 16691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(dstat & (WATCH_DOG_INTERRUPT|ABORTED)) { 16701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) serious DMA problem, dstat=%02x\n", 16711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, dstat); 16721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_scsi_done(hostdata, SCp, DID_ERROR<<16); 16731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* NOTE: selection interrupt processing MUST occur 16771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * after script interrupt processing to correctly cope 16781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * with the case where we process a disconnect and 16791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * then get reselected before we process the 16801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * disconnection */ 16811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(sstat0 & SELECTED) { 16821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME: It currently takes at least FOUR 16831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * interrupts to complete a command that 16841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * disconnects: one for the disconnect, one 16851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for the reselection, one to get the 16861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * reselection data and one to complete the 16871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * command. If we guess the reselected 16881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * command here and prepare it, we only need 16891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to get a reselection data interrupt if we 16901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * guessed wrongly. Since the interrupt 16911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * overhead is much greater than the command 16921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * setup, this would be an efficient 16931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * optimisation particularly as we probably 16941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * only have one outstanding command on a 16951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * target most of the time */ 16961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = process_selection(host, dsp); 16981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(resume_offset) { 17041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->state != NCR_700_HOST_BUSY) { 17051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: Driver error: resume at 0x%08x [0x%04x] with non busy host!\n", 17061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, resume_offset, resume_offset - hostdata->pScript); 17071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_BUSY; 17081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("Attempting to resume at %x\n", resume_offset)); 17111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_clear_fifo(host); 17121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writel(resume_offset, host, DSP_REG); 17131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* There is probably a technical no-no about this: If we're a 17151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * shared interrupt and we got this interrupt because the 17161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * other device needs servicing not us, we're still going to 17171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * check our queued commands here---of course, there shouldn't 17181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * be any outstanding.... */ 17191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->state == NCR_700_HOST_FREE) { 17201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 17211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i = 0; i < NCR_700_COMMAND_SLOTS_PER_HOST; i++) { 17231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* fairness: always run the queue from the last 17241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * position we left off */ 17251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int j = (i + hostdata->saved_slot_position) 17261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds % NCR_700_COMMAND_SLOTS_PER_HOST; 17271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->slots[j].state != NCR_700_SLOT_QUEUED) 17291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 17301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(NCR_700_start_command(hostdata->slots[j].cmnd)) { 17311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("scsi%d: Issuing saved command slot %p, cmd %p\t\n", 17321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, &hostdata->slots[j], 17331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->slots[j].cmnd)); 17341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->saved_slot_position = j + 1; 17351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 17381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds out_unlock: 17411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(host->host_lock, flags); 17421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return IRQ_RETVAL(handled); 17431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int 17461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_queuecommand(struct scsi_cmnd *SCp, void (*done)(struct scsi_cmnd *)) 17471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 17491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SCp->device->host->hostdata[0]; 17501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 move_ins; 17511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enum dma_data_direction direction; 17521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot; 17531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->command_slot_count >= NCR_700_COMMAND_SLOTS_PER_HOST) { 17551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* We're over our allocation, this should never happen 17561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * since we report the max allocation to the mid layer */ 17571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "scsi%d: Command depth has gone over queue depth\n", SCp->device->host->host_no); 17581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 17591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* check for untagged commands. We cannot have any outstanding 17611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * commands if we accept them. Commands could be untagged because: 17621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - The tag negotiated bitmap is clear 17641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - The blk layer sent and untagged command 17651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 17661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(NCR_700_get_depth(SCp->device) != 0 17671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && (!(hostdata->tag_negotiated & (1<<SCp->device->id)) 17681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || !blk_rq_tagged(SCp->request))) { 17691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG((KERN_ERR "scsi%d (%d:%d) has non zero depth %d\n", 17701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->device->host->host_no, SCp->device->id, SCp->device->lun, 17711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_get_depth(SCp->device))); 17721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return SCSI_MLQUEUE_DEVICE_BUSY; 17731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(NCR_700_get_depth(SCp->device) >= SCp->device->queue_depth) { 17751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG((KERN_ERR "scsi%d (%d:%d) has max tag depth %d\n", 17761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->device->host->host_no, SCp->device->id, SCp->device->lun, 17771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_get_depth(SCp->device))); 17781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return SCSI_MLQUEUE_DEVICE_BUSY; 17791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_depth(SCp->device, NCR_700_get_depth(SCp->device) + 1); 17811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* begin the command here */ 17831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* no need to check for NULL, test for command_slot_count above 17841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ensures a slot is free */ 17851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot = find_empty_slot(hostdata); 17861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->cmnd = SCp; 17881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->scsi_done = done; 17901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->host_scribble = (unsigned char *)slot; 17911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->SCp.ptr = NULL; 17921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->SCp.buffer = NULL; 17931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 17951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("53c700: scsi%d, command ", SCp->device->host->host_no); 17961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 17971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 17981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(blk_rq_tagged(SCp->request) 17991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && (hostdata->tag_negotiated &(1<<SCp->device->id)) == 0 18001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && NCR_700_get_tag_neg_state(SCp->device) == NCR_700_START_TAG_NEGOTIATION) { 18011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) Enabling Tag Command Queuing\n", SCp->device->host->host_no, SCp->device->id, SCp->device->lun); 18021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->tag_negotiated |= (1<<SCp->device->id); 18031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_tag_neg_state(SCp->device, NCR_700_DURING_TAG_NEGOTIATION); 18041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* here we may have to process an untagged command. The gate 18071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * above ensures that this will be the only one outstanding, 18081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * so clear the tag negotiated bit. 18091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FIXME: This will royally screw up on multiple LUN devices 18111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * */ 18121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(!blk_rq_tagged(SCp->request) 18131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && (hostdata->tag_negotiated &(1<<SCp->device->id))) { 18141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "scsi%d: (%d:%d) Disabling Tag Command Queuing\n", SCp->device->host->host_no, SCp->device->id, SCp->device->lun); 18151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->tag_negotiated &= ~(1<<SCp->device->id); 18161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if((hostdata->tag_negotiated &(1<<SCp->device->id)) 18191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && scsi_get_tag_type(SCp->device)) { 18201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->tag = SCp->request->tag; 18211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("53c700 %d:%d:%d, sending out tag %d, slot %p\n", 18221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->device->host->host_no, SCp->device->id, SCp->device->lun, slot->tag, 18231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot)); 18241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 18251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->tag = SCSI_NO_TAG; 18261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* must populate current_cmnd for scsi_find_tag to work */ 18271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->device->current_cmnd = SCp; 18281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* sanity check: some of the commands generated by the mid-layer 18301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * have an eccentric idea of their sc_data_direction */ 18311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(!SCp->use_sg && !SCp->request_bufflen 18321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && SCp->sc_data_direction != DMA_NONE) { 18331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 18341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("53c700: Command"); 18351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 18361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("Has wrong data direction %d\n", SCp->sc_data_direction); 18371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 18381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->sc_data_direction = DMA_NONE; 18391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (SCp->cmnd[0]) { 18421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case REQUEST_SENSE: 18431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear the internal sense magic */ 18441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->cmnd[6] = 0; 18451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* fall through */ 18461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 18471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* OK, get it from the command */ 18481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch(SCp->sc_data_direction) { 18491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case DMA_BIDIRECTIONAL: 18501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 18511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "53c700: Unknown command for data direction "); 18521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 18531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds move_ins = 0; 18551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 18561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case DMA_NONE: 18571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds move_ins = 0; 18581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 18591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case DMA_FROM_DEVICE: 18601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds move_ins = SCRIPT_MOVE_DATA_IN; 18611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 18621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case DMA_TO_DEVICE: 18631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds move_ins = SCRIPT_MOVE_DATA_OUT; 18641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 18651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* now build the scatter gather list */ 18691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds direction = SCp->sc_data_direction; 18701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(move_ins != 0) { 18711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 18721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int sg_count; 18731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_addr_t vPtr = 0; 18741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 count = 0; 18751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp->use_sg) { 18771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sg_count = dma_map_sg(hostdata->dev, SCp->buffer, 18781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->use_sg, direction); 18791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 18801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds vPtr = dma_map_single(hostdata->dev, 18811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->request_buffer, 18821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->request_bufflen, 18831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds direction); 18841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count = SCp->request_bufflen; 18851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->dma_handle = vPtr; 18861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sg_count = 1; 18871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i = 0; i < sg_count; i++) { 18911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp->use_sg) { 18931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scatterlist *sg = SCp->buffer; 18941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds vPtr = sg_dma_address(&sg[i]); 18961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count = sg_dma_len(&sg[i]); 18971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[i].ins = bS_to_host(move_ins | count); 19001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG((" scatter block %d: move %d[%08x] from 0x%lx\n", 19011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds i, count, slot->SG[i].ins, (unsigned long)vPtr)); 19021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[i].pAddr = bS_to_host(vPtr); 19031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[i].ins = bS_to_host(SCRIPT_RETURN); 19051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[i].pAddr = 0; 19061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(slot->SG, sizeof(slot->SG), DMA_TO_DEVICE); 19071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG((" SETTING %08lx to %x\n", 19081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (&slot->pSG[i].ins), 19091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[i].ins)); 19101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->resume_offset = 0; 19121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->pCmd = dma_map_single(hostdata->dev, SCp->cmnd, 19131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sizeof(SCp->cmnd), DMA_TO_DEVICE); 19141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_start_command(SCp); 19151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 19161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int 19191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_abort(struct scsi_cmnd * SCp) 19201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot; 19221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "scsi%d (%d:%d) New error handler wants to abort command\n\t", 19241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->device->host->host_no, SCp->device->id, SCp->device->lun); 19251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 19261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot = (struct NCR_700_command_slot *)SCp->host_scribble; 19281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(slot == NULL) 19301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* no outstanding command to abort */ 19311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return SUCCESS; 19321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp->cmnd[0] == TEST_UNIT_READY) { 19331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME: This is because of a problem in the new 19341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * error handler. When it is in error recovery, it 19351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * will send a TUR to a device it thinks may still be 19361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * showing a problem. If the TUR isn't responded to, 19371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it will abort it and mark the device off line. 19381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Unfortunately, it does no other error recovery, so 19391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this would leave us with an outstanding command 19401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * occupying a slot. Rather than allow this to 19411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * happen, we issue a bus reset to force all 19421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * outstanding commands to terminate here. */ 19431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(SCp->device->host); 19441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* still drop through and return failed */ 19451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return FAILED; 19471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int 19511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_bus_reset(struct scsi_cmnd * SCp) 19521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DECLARE_COMPLETION(complete); 19541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 19551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SCp->device->host->hostdata[0]; 19561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "scsi%d (%d:%d) New error handler wants BUS reset, cmd %p\n\t", 19581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->device->host->host_no, SCp->device->id, SCp->device->lun, SCp); 19591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 196068b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik 19611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* In theory, eh_complete should always be null because the 19621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * eh is single threaded, but just in case we're handling a 19631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * reset via sg or something */ 196468b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik spin_lock_irq(SCp->device->host->host_lock); 196568b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik while (hostdata->eh_complete != NULL) { 19661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irq(SCp->device->host->host_lock); 19671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msleep_interruptible(100); 19681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irq(SCp->device->host->host_lock); 19691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 197068b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik 19711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->eh_complete = &complete; 19721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(SCp->device->host); 197368b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik 19741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irq(SCp->device->host->host_lock); 19751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_for_completion(&complete); 19761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irq(SCp->device->host->host_lock); 197768b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik 19781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->eh_complete = NULL; 19791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Revalidate the transport parameters of the failing device */ 19801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->fast) 19811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_schedule_dv_device(SCp->device); 198268b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik 198368b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik spin_unlock_irq(SCp->device->host->host_lock); 19841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return SUCCESS; 19851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int 19881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_host_reset(struct scsi_cmnd * SCp) 19891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "scsi%d (%d:%d) New error handler wants HOST reset\n\t", 19911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->device->host->host_no, SCp->device->id, SCp->device->lun); 19921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 19931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1994df0ae2497ddefd72a87f3a3b34ff32455d7d4ae0Jeff Garzik spin_lock_irq(SCp->device->host->host_lock); 1995df0ae2497ddefd72a87f3a3b34ff32455d7d4ae0Jeff Garzik 19961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(SCp->device->host); 19971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_chip_reset(SCp->device->host); 1998df0ae2497ddefd72a87f3a3b34ff32455d7d4ae0Jeff Garzik 1999df0ae2497ddefd72a87f3a3b34ff32455d7d4ae0Jeff Garzik spin_unlock_irq(SCp->device->host->host_lock); 2000df0ae2497ddefd72a87f3a3b34ff32455d7d4ae0Jeff Garzik 20011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return SUCCESS; 20021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 20051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_set_period(struct scsi_target *STp, int period) 20061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *SHp = dev_to_shost(STp->dev.parent); 20081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 20091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SHp->hostdata[0]; 20101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(!hostdata->fast) 20121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 20131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(period < hostdata->min_period) 20151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds period = hostdata->min_period; 20161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_period(STp) = period; 20181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_flags(STp) &= ~(NCR_700_DEV_NEGOTIATED_SYNC | 20191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_DEV_BEGIN_SYNC_NEGOTIATION); 20201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_flags(STp) |= NCR_700_DEV_PRINT_SYNC_NEGOTIATION; 20211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 20241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_set_offset(struct scsi_target *STp, int offset) 20251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *SHp = dev_to_shost(STp->dev.parent); 20271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 20281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SHp->hostdata[0]; 20291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int max_offset = hostdata->chip710 20301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ? NCR_710_MAX_OFFSET : NCR_700_MAX_OFFSET; 20311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(!hostdata->fast) 20331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 20341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(offset > max_offset) 20361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset = max_offset; 20371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if we're currently async, make sure the period is reasonable */ 20391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(spi_offset(STp) == 0 && (spi_period(STp) < hostdata->min_period || 20401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_period(STp) > 0xff)) 20411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_period(STp) = hostdata->min_period; 20421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_offset(STp) = offset; 20441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_flags(STp) &= ~(NCR_700_DEV_NEGOTIATED_SYNC | 20451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_DEV_BEGIN_SYNC_NEGOTIATION); 20461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_flags(STp) |= NCR_700_DEV_PRINT_SYNC_NEGOTIATION; 20471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int 20521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_slave_configure(struct scsi_device *SDp) 20531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 20551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SDp->host->hostdata[0]; 20561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* to do here: allocate memory; build a queue_full list */ 20581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SDp->tagged_supported) { 20591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_set_tag_type(SDp, MSG_ORDERED_TAG); 20601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_activate_tcq(SDp, NCR_700_DEFAULT_TAGS); 20611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_tag_neg_state(SDp, NCR_700_START_TAG_NEGOTIATION); 20621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 20631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* initialise to default depth */ 20641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_adjust_queue_depth(SDp, 0, SDp->host->cmd_per_lun); 20651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->fast) { 20671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Find the correct offset and period via domain validation */ 20681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!spi_initial_dv(SDp->sdev_target)) 20691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_dv_device(SDp); 20701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 20711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_offset(SDp->sdev_target) = 0; 20721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_period(SDp->sdev_target) = 0; 20731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 20751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 20781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_slave_destroy(struct scsi_device *SDp) 20791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* to do here: deallocate memory */ 20811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 20841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_change_queue_depth(struct scsi_device *SDp, int depth) 20851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (depth > NCR_700_MAX_TAGS) 20871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds depth = NCR_700_MAX_TAGS; 20881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_adjust_queue_depth(SDp, scsi_get_tag_type(SDp), depth); 20901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return depth; 20911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int NCR_700_change_queue_type(struct scsi_device *SDp, int tag_type) 20941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int change_tag = ((tag_type ==0 && scsi_get_tag_type(SDp) != 0) 20961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || (tag_type != 0 && scsi_get_tag_type(SDp) == 0)); 20971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 20981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SDp->host->hostdata[0]; 20991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_set_tag_type(SDp, tag_type); 21011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* We have a global (per target) flag to track whether TCQ is 21031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * enabled, so we'll be turning it off for the entire target here. 21041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * our tag algorithm will fail if we mix tagged and untagged commands, 21051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * so quiesce the device before doing this */ 21061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (change_tag) 21071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_target_quiesce(SDp->sdev_target); 21081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!tag_type) { 21101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* shift back to the default unqueued number of commands 21111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (the user can still raise this) */ 21121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_deactivate_tcq(SDp, SDp->host->cmd_per_lun); 21131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->tag_negotiated &= ~(1 << SDp->id); 21141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 21151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Here, we cleared the negotiation flag above, so this 21161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * will force the driver to renegotiate */ 21171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_activate_tcq(SDp, SDp->queue_depth); 21181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (change_tag) 21191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_tag_neg_state(SDp, NCR_700_START_TAG_NEGOTIATION); 21201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 21211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (change_tag) 21221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_target_resume(SDp->sdev_target); 21231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return tag_type; 21251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 21281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_show_active_tags(struct device *dev, char *buf) 21291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_device *SDp = to_scsi_device(dev); 21311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return snprintf(buf, 20, "%d\n", NCR_700_get_depth(SDp)); 21331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct device_attribute NCR_700_active_tags_attr = { 21361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .attr = { 21371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .name = "active_tags", 21381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .mode = S_IRUGO, 21391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }, 21401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .show = NCR_700_show_active_tags, 21411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 21421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC struct device_attribute *NCR_700_dev_attrs[] = { 21441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &NCR_700_active_tags_attr, 21451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NULL, 21461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 21471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(NCR_700_detect); 21491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(NCR_700_release); 21501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(NCR_700_intr); 21511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct spi_function_template NCR_700_transport_functions = { 21531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_period = NCR_700_set_period, 21541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .show_period = 1, 21551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_offset = NCR_700_set_offset, 21561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .show_offset = 1, 21571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 21581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init NCR_700_init(void) 21601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_transport_template = spi_attach_transport(&NCR_700_transport_functions); 21621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(!NCR_700_transport_template) 21631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 21641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 21651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit NCR_700_exit(void) 21681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_release_transport(NCR_700_transport_template); 21701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(NCR_700_init); 21731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(NCR_700_exit); 21741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2175