53c700.c revision 67d59dfdeb21df2c16dcd478b66177e91178ecd0
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> 131017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik#include <linux/device.h> 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/dma.h> 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/system.h> 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/io.h> 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/pgtable.h> 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/byteorder.h> 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi.h> 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_cmnd.h> 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_dbg.h> 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_eh.h> 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_host.h> 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_tcq.h> 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_transport.h> 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_transport_spi.h> 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "53c700.h" 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* NOTE: For 64 bit drivers there are points in the code where we use 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * a non dereferenceable pointer to point to a structure in dma-able 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * memory (which is 32 bits) so that we can use all of the structure 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * operations but take the address at the end. This macro allows us 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to truncate the 64 bit pointer down to 32 bits without the compiler 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * complaining */ 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define to32bit(x) ((__u32)((unsigned long)(x))) 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define STATIC 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define STATIC static 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR("James Bottomley"); 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION("53c700 and 53c700-66 Driver"); 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* This is the script */ 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "53c700_d.h" 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int NCR_700_queuecommand(struct scsi_cmnd *, void (*done)(struct scsi_cmnd *)); 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int NCR_700_abort(struct scsi_cmnd * SCpnt); 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int NCR_700_bus_reset(struct scsi_cmnd * SCpnt); 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int NCR_700_host_reset(struct scsi_cmnd * SCpnt); 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void NCR_700_chip_setup(struct Scsi_Host *host); 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void NCR_700_chip_reset(struct Scsi_Host *host); 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int NCR_700_slave_configure(struct scsi_device *SDpnt); 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void NCR_700_slave_destroy(struct scsi_device *SDpnt); 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int NCR_700_change_queue_depth(struct scsi_device *SDpnt, int depth); 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int NCR_700_change_queue_type(struct scsi_device *SDpnt, int depth); 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC struct device_attribute *NCR_700_dev_attrs[]; 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC struct scsi_transport_template *NCR_700_transport_template = NULL; 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18667d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomleystruct NCR_700_sense { 18767d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley unsigned char cmnd[MAX_COMMAND_SIZE]; 18867d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley}; 18967d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *NCR_700_phase[] = { 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "", 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "after selection", 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "before command phase", 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "after command phase", 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "after status phase", 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "after data in phase", 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "after data out phase", 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "during data phase", 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *NCR_700_condition[] = { 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "", 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "NOT MSG_OUT", 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "UNEXPECTED PHASE", 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "NOT MSG_IN", 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "UNEXPECTED MSG", 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "MSG_IN", 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "SDTR_MSG RECEIVED", 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "REJECT_MSG RECEIVED", 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "DISCONNECT_MSG RECEIVED", 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "MSG_OUT", 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "DATA_IN", 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *NCR_700_fatal_messages[] = { 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "unexpected message after reselection", 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "still MSG_OUT after message injection", 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "not MSG_IN after selection", 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "Illegal message length received", 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *NCR_700_SBCL_bits[] = { 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "IO ", 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "CD ", 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "MSG ", 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ATN ", 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "SEL ", 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "BSY ", 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ACK ", 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "REQ ", 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *NCR_700_SBCL_to_phase[] = { 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "DATA_OUT", 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "DATA_IN", 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "CMD_OUT", 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "STATE", 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ILLEGAL PHASE", 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ILLEGAL PHASE", 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "MSG OUT", 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "MSG IN", 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* This translates the SDTR message offset and period to a value 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * which can be loaded into the SXFER_REG. 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NOTE: According to SCSI-2, the true transfer period (in ns) is 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * actually four times this period value */ 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline __u8 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_offset_period_to_sxfer(struct NCR_700_Host_Parameters *hostdata, 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 offset, __u8 period) 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int XFERP; 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 min_xferp = (hostdata->chip710 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ? NCR_710_MIN_XFERP : NCR_700_MIN_XFERP); 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 max_offset = (hostdata->chip710 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ? NCR_710_MAX_OFFSET : NCR_700_MAX_OFFSET); 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(offset == 0) 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(period < hostdata->min_period) { 2656ea3c0b2dac0d6a857d6bc010e544f4c901fff78Matthew Wilcox printk(KERN_WARNING "53c700: Period %dns is less than this chip's minimum, setting to %d\n", period*4, NCR_700_MIN_PERIOD*4); 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds period = hostdata->min_period; 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds XFERP = (period*4 * hostdata->sync_clock)/1000 - 4; 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(offset > max_offset) { 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "53c700: Offset %d exceeds chip maximum, setting to %d\n", 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset, max_offset); 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset = max_offset; 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(XFERP < min_xferp) { 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "53c700: XFERP %d is less than minium, setting to %d\n", 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds XFERP, min_xferp); 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds XFERP = min_xferp; 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (offset & 0x0f) | (XFERP & 0x07)<<4; 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline __u8 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_get_SXFER(struct scsi_device *SDp) 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SDp->host->hostdata[0]; 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NCR_700_offset_period_to_sxfer(hostdata, 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_offset(SDp->sdev_target), 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_period(SDp->sdev_target)); 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct Scsi_Host * 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_detect(struct scsi_host_template *tpnt, 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata, struct device *dev) 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_addr_t pScript, pSlots; 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 *memory; 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 *script; 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *host; 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds static int banner = 0; 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int j; 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(tpnt->sdev_attrs == NULL) 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->sdev_attrs = NCR_700_dev_attrs; 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memory = dma_alloc_noncoherent(hostdata->dev, TOTAL_MEM_SIZE, 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &pScript, GFP_KERNEL); 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(memory == NULL) { 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "53c700: Failed to allocate memory for driver, detatching\n"); 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script = (__u32 *)memory; 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgin = memory + MSGIN_OFFSET; 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgout = memory + MSGOUT_OFFSET; 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->status = memory + STATUS_OFFSET; 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* all of these offsets are L1_CACHE_BYTES separated. It is fatal 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * if this isn't sufficient separation to avoid dma flushing issues */ 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BUG_ON(!dma_is_consistent(pScript) && L1_CACHE_BYTES < dma_get_cache_alignment()); 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->slots = (struct NCR_700_command_slot *)(memory + SLOTS_OFFSET); 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->dev = dev; 3236391a11375de5e2bb1eb8481e54619761dc65d9fTobias Klauser 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pSlots = pScript + SLOTS_OFFSET; 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Fill in the missing routines from the host template */ 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->queuecommand = NCR_700_queuecommand; 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->eh_abort_handler = NCR_700_abort; 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->eh_bus_reset_handler = NCR_700_bus_reset; 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->eh_host_reset_handler = NCR_700_host_reset; 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->can_queue = NCR_700_COMMAND_SLOTS_PER_HOST; 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->sg_tablesize = NCR_700_SG_SEGMENTS; 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->cmd_per_lun = NCR_700_CMD_PER_LUN; 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->use_clustering = ENABLE_CLUSTERING; 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->slave_configure = NCR_700_slave_configure; 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->slave_destroy = NCR_700_slave_destroy; 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->change_queue_depth = NCR_700_change_queue_depth; 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->change_queue_type = NCR_700_change_queue_type; 3396391a11375de5e2bb1eb8481e54619761dc65d9fTobias Klauser 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(tpnt->name == NULL) 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->name = "53c700"; 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(tpnt->proc_name == NULL) 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->proc_name = "53c700"; 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host = scsi_host_alloc(tpnt, 4); 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!host) 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset(hostdata->slots, 0, sizeof(struct NCR_700_command_slot) 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NCR_700_COMMAND_SLOTS_PER_HOST); 3506391a11375de5e2bb1eb8481e54619761dc65d9fTobias Klauser for (j = 0; j < NCR_700_COMMAND_SLOTS_PER_HOST; j++) { 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_addr_t offset = (dma_addr_t)((unsigned long)&hostdata->slots[j].SG[0] 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds - (unsigned long)&hostdata->slots[0].SG[0]); 3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->slots[j].pSG = (struct NCR_700_SG_List *)((unsigned long)(pSlots + offset)); 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(j == 0) 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->free_list = &hostdata->slots[j]; 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->slots[j-1].ITL_forw = &hostdata->slots[j]; 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->slots[j].state = NCR_700_SLOT_FREE; 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3616391a11375de5e2bb1eb8481e54619761dc65d9fTobias Klauser for (j = 0; j < ARRAY_SIZE(SCRIPT); j++) 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script[j] = bS_to_host(SCRIPT[j]); 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* adjust all labels to be bus physical */ 3656391a11375de5e2bb1eb8481e54619761dc65d9fTobias Klauser for (j = 0; j < PATCHES; j++) 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script[LABELPATCHES[j]] = bS_to_host(pScript + SCRIPT[LABELPATCHES[j]]); 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* now patch up fixed addresses. */ 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_32(script, MessageLocation, 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pScript + MSGOUT_OFFSET); 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_32(script, StatusAddress, 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pScript + STATUS_OFFSET); 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_32(script, ReceiveMsgAddress, 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pScript + MSGIN_OFFSET); 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->script = script; 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->pScript = pScript; 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_sync_single_for_device(hostdata->dev, pScript, sizeof(SCRIPT), DMA_TO_DEVICE); 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_FREE; 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = NULL; 3802b89dad0c7e3b03d45d9674ee9a7b49670df098eHannes Reinecke host->max_id = 8; 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->max_lun = NCR_700_MAX_LUNS; 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BUG_ON(NCR_700_transport_template == NULL); 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->transportt = NCR_700_transport_template; 38456fece20086ebe32bce2c0d74ceadd516b56baae<jejb@mulgrave.(none)> host->unique_id = (unsigned long)hostdata->base; 3851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->eh_complete = NULL; 3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->hostdata[0] = (unsigned long)hostdata; 3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* kick the chip */ 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(0xff, host, CTEST9_REG); 3896391a11375de5e2bb1eb8481e54619761dc65d9fTobias Klauser if (hostdata->chip710) 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->rev = (NCR_700_readb(host, CTEST8_REG)>>4) & 0x0f; 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->rev = (NCR_700_readb(host, CTEST7_REG)>>4) & 0x0f; 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->fast = (NCR_700_readb(host, CTEST9_REG) == 0); 3946391a11375de5e2bb1eb8481e54619761dc65d9fTobias Klauser if (banner == 0) { 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_NOTICE "53c700: Version " NCR_700_VERSION " By James.Bottomley@HansenPartnership.com\n"); 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds banner = 1; 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_NOTICE "scsi%d: %s rev %d %s\n", host->host_no, 3996391a11375de5e2bb1eb8481e54619761dc65d9fTobias Klauser hostdata->chip710 ? "53c710" : 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (hostdata->fast ? "53c700-66" : "53c700"), 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->rev, hostdata->differential ? 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "(Differential)" : ""); 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* reset the chip */ 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_chip_reset(host); 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (scsi_add_host(host, dev)) { 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_printk(KERN_ERR, dev, "53c700: scsi_add_host failed\n"); 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_host_put(host); 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_signalling(host) = hostdata->differential ? SPI_SIGNAL_HVD : 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SPI_SIGNAL_SE; 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return host; 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_release(struct Scsi_Host *host) 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)host->hostdata[0]; 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_free_noncoherent(hostdata->dev, TOTAL_MEM_SIZE, 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->script, hostdata->pScript); 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline __u8 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_identify(int can_disconnect, __u8 lun) 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return IDENTIFY_BASE | 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((can_disconnect) ? 0x40 : 0) | 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (lun & NCR_700_LUN_MASK); 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function : static int data_residual (Scsi_Host *host) 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : return residual data count of what's in the chip. If you 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * really want to know what this function is doing, it's almost a 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * direct transcription of the algorithm described in the 53c710 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * guide, except that the DBC and DFIFO registers are only 6 bits 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * wide on a 53c700. 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Inputs : host - SCSI host */ 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_data_residual (struct Scsi_Host *host) { 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)host->hostdata[0]; 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int count, synchronous = 0; 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int ddir; 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->chip710) { 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count = ((NCR_700_readb(host, DFIFO_REG) & 0x7f) - 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (NCR_700_readl(host, DBC_REG) & 0x7f)) & 0x7f; 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count = ((NCR_700_readb(host, DFIFO_REG) & 0x3f) - 4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (NCR_700_readl(host, DBC_REG) & 0x3f)) & 0x3f; 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->fast) 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds synchronous = NCR_700_readb(host, SXFER_REG) & 0x0f; 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* get the data direction */ 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ddir = NCR_700_readb(host, CTEST0_REG) & 0x01; 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ddir) { 4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Receive */ 4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (synchronous) 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count += (NCR_700_readb(host, SSTAT2_REG) & 0xf0) >> 4; 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 4731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (NCR_700_readb(host, SSTAT1_REG) & SIDL_REG_FULL) 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ++count; 4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Send */ 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 sstat = NCR_700_readb(host, SSTAT1_REG); 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sstat & SODL_REG_FULL) 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ++count; 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (synchronous && (sstat & SODR_REG_FULL)) 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ++count; 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(count) 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("RESIDUAL IS %d (ddir %d)\n", count, ddir); 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return count; 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* print out the SCSI wires and corresponding phase from the SBCL register 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * in the chip */ 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline char * 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldssbcl_to_string(__u8 sbcl) 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds static char ret[256]; 4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret[0]='\0'; 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i=0; i<8; i++) { 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if((1<<i) & sbcl) 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(ret, NCR_700_SBCL_bits[i]); 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(ret, NCR_700_SBCL_to_phase[sbcl & 0x07]); 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ret; 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline __u8 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsbitmap_to_number(__u8 bitmap) 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 i; 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i=0; i<8 && !(bitmap &(1<<i)); i++) 5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ; 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return i; 5151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Pull a slot off the free list */ 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC struct NCR_700_command_slot * 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfind_empty_slot(struct NCR_700_Host_Parameters *hostdata) 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = hostdata->free_list; 5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(slot == NULL) { 5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* sanity check */ 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->command_slot_count != NCR_700_COMMAND_SLOTS_PER_HOST) 5261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "SLOTS FULL, but count is %d, should be %d\n", hostdata->command_slot_count, NCR_700_COMMAND_SLOTS_PER_HOST); 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(slot->state != NCR_700_SLOT_FREE) 5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* should panic! */ 5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "BUSY SLOT ON FREE LIST!!!\n"); 5331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->free_list = slot->ITL_forw; 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->ITL_forw = NULL; 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* NOTE: set the state to busy here, not queued, since this 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * indicates the slot is in use and cannot be run by the IRQ 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * finish routine. If we cannot queue the command when it 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * is properly build, we then change to NCR_700_SLOT_QUEUED */ 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->state = NCR_700_SLOT_BUSY; 54467d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley slot->flags = 0; 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->command_slot_count++; 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return slot; 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfree_slot(struct NCR_700_command_slot *slot, 5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata) 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if((slot->state & NCR_700_SLOT_MASK) != NCR_700_SLOT_MAGIC) { 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "53c700: SLOT %p is not MAGIC!!!\n", slot); 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(slot->state == NCR_700_SLOT_FREE) { 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "53c700: SLOT %p is FREE!!!\n", slot); 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->resume_offset = 0; 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->cmnd = NULL; 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->state = NCR_700_SLOT_FREE; 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->ITL_forw = hostdata->free_list; 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->free_list = slot; 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->command_slot_count--; 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* This routine really does very little. The command is indexed on 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds the ITL and (if tagged) the ITLQ lists in _queuecommand */ 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldssave_for_reselection(struct NCR_700_Host_Parameters *hostdata, 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp, __u32 dsp) 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Its just possible that this gets executed twice */ 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 5781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = 5791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_command_slot *)SCp->host_scribble; 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->resume_offset = dsp; 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_FREE; 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = NULL; 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC inline void 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_unmap(struct NCR_700_Host_Parameters *hostdata, struct scsi_cmnd *SCp, 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot) 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp->sc_data_direction != DMA_NONE && 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->sc_data_direction != DMA_BIDIRECTIONAL) { 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp->use_sg) { 59467d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley dma_unmap_sg(hostdata->dev, SCp->request_buffer, 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->use_sg, SCp->sc_data_direction); 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_unmap_single(hostdata->dev, slot->dma_handle, 5981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->request_bufflen, 5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->sc_data_direction); 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC inline void 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_scsi_done(struct NCR_700_Host_Parameters *hostdata, 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp, int result) 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_FREE; 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = NULL; 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_command_slot *)SCp->host_scribble; 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_unmap(hostdata, SCp, slot); 61667d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley if (slot->flags == NCR_700_FLAG_AUTOSENSE) { 61767d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley struct NCR_700_sense *sense = SCp->device->hostdata; 6181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 6191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(" ORIGINAL CMD %p RETURNED %d, new return is %d sense is\n", 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp, SCp->cmnd[7], result); 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_sense("53c700", SCp); 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 62467d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley dma_unmap_single(hostdata->dev, slot->dma_handle, sizeof(SCp->sense_buffer), DMA_FROM_DEVICE); 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* restore the old result if the request sense was 6261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * successful */ 6271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(result == 0) 62867d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley result = sense->cmnd[7]; 62967d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley } else 63067d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley dma_unmap_single(hostdata->dev, slot->pCmd, 63167d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley sizeof(SCp->cmnd), DMA_TO_DEVICE); 63267d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley 6331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_slot(slot, hostdata); 6341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 6351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(NCR_700_get_depth(SCp->device) == 0 || 6361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_get_depth(SCp->device) > SCp->device->queue_depth) 6371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "Invalid depth in NCR_700_scsi_done(): %d\n", 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_get_depth(SCp->device)); 6391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* NCR_700_DEBUG */ 6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_depth(SCp->device, NCR_700_get_depth(SCp->device) - 1); 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->host_scribble = NULL; 6431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->result = result; 6441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->scsi_done(SCp); 6451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "53c700: SCSI DONE HAS NULL SCp\n"); 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_internal_bus_reset(struct Scsi_Host *host) 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Bus reset */ 6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(ASSERT_RST, host, SCNTL1_REG); 6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(50); 6571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(0, host, SCNTL1_REG); 6581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_chip_setup(struct Scsi_Host *host) 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)host->hostdata[0]; 6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 dcntl_extra = 0; 6671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 min_period; 6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 min_xferp = (hostdata->chip710 ? NCR_710_MIN_XFERP : NCR_700_MIN_XFERP); 6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->chip710) { 6711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 burst_disable = hostdata->burst_disable 6721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ? BURST_DISABLE : 0; 6731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dcntl_extra = COMPAT_700_MODE; 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(dcntl_extra, host, DCNTL_REG); 6761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(BURST_LENGTH_8 | hostdata->dmode_extra, 6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host, DMODE_710_REG); 6781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(burst_disable | (hostdata->differential ? 6791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DIFF : 0), host, CTEST7_REG); 6801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(BTB_TIMER_DISABLE, host, CTEST0_REG); 6811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(FULL_ARBITRATION | ENABLE_PARITY | PARITY 6821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | AUTO_ATN, host, SCNTL0_REG); 6831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(BURST_LENGTH_8 | hostdata->dmode_extra, 6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host, DMODE_700_REG); 6861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(hostdata->differential ? 6871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DIFF : 0, host, CTEST7_REG); 6881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->fast) { 6891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* this is for 700-66, does nothing on 700 */ 6901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(LAST_DIS_ENBL | ENABLE_ACTIVE_NEGATION 6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | GENERATE_RECEIVE_PARITY, host, 6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds CTEST8_REG); 6931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(FULL_ARBITRATION | ENABLE_PARITY 6951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | PARITY | AUTO_ATN, host, SCNTL0_REG); 6961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(1 << host->this_id, host, SCID_REG); 7001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(0, host, SBCL_REG); 7011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(ASYNC_OPERATION, host, SXFER_REG); 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(PHASE_MM_INT | SEL_TIMEOUT_INT | GROSS_ERR_INT | UX_DISC_INT 7041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | RST_INT | PAR_ERR_INT | SELECT_INT, host, SIEN_REG); 7051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(ABORT_INT | INT_INST_INT | ILGL_INST_INT, host, DIEN_REG); 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(ENABLE_SELECT, host, SCNTL1_REG); 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->clock > 75) { 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "53c700: Clock speed %dMHz is too high: 75Mhz is the maximum this chip can be driven at\n", hostdata->clock); 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* do the best we can, but the async clock will be out 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * of spec: sync divider 2, async divider 3 */ 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("53c700: sync 2 async 3\n")); 7131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(SYNC_DIV_2_0, host, SBCL_REG); 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(ASYNC_DIV_3_0 | dcntl_extra, host, DCNTL_REG); 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->sync_clock = hostdata->clock/2; 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(hostdata->clock > 50 && hostdata->clock <= 75) { 7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* sync divider 1.5, async divider 3 */ 7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("53c700: sync 1.5 async 3\n")); 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(SYNC_DIV_1_5, host, SBCL_REG); 7201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(ASYNC_DIV_3_0 | dcntl_extra, host, DCNTL_REG); 7211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->sync_clock = hostdata->clock*2; 7221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->sync_clock /= 3; 7231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(hostdata->clock > 37 && hostdata->clock <= 50) { 7251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* sync divider 1, async divider 2 */ 7261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("53c700: sync 1 async 2\n")); 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(SYNC_DIV_1_0, host, SBCL_REG); 7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(ASYNC_DIV_2_0 | dcntl_extra, host, DCNTL_REG); 7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->sync_clock = hostdata->clock; 7301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(hostdata->clock > 25 && hostdata->clock <=37) { 7311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* sync divider 1, async divider 1.5 */ 7321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("53c700: sync 1 async 1.5\n")); 7331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(SYNC_DIV_1_0, host, SBCL_REG); 7341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(ASYNC_DIV_1_5 | dcntl_extra, host, DCNTL_REG); 7351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->sync_clock = hostdata->clock; 7361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("53c700: sync 1 async 1\n")); 7381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(SYNC_DIV_1_0, host, SBCL_REG); 7391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(ASYNC_DIV_1_0 | dcntl_extra, host, DCNTL_REG); 7401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* sync divider 1, async divider 1 */ 7411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->sync_clock = hostdata->clock; 7421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Calculate the actual minimum period that can be supported 7441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * by our synchronous clock speed. See the 710 manual for 7451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * exact details of this calculation which is based on a 7461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * setting of the SXFER register */ 7471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds min_period = 1000*(4+min_xferp)/(4*hostdata->sync_clock); 7481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->min_period = NCR_700_MIN_PERIOD; 7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(min_period > NCR_700_MIN_PERIOD) 7501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->min_period = min_period; 7511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 7541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_chip_reset(struct Scsi_Host *host) 7551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)host->hostdata[0]; 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->chip710) { 7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(SOFTWARE_RESET_710, host, ISTAT_REG); 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(100); 7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(0, host, ISTAT_REG); 7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 7641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(SOFTWARE_RESET, host, DCNTL_REG); 7651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(100); 7661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(0, host, DCNTL_REG); 7681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mdelay(1000); 7711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_chip_setup(host); 7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* The heart of the message processing engine is that the instruction 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * immediately after the INT is the normal case (and so must be CLEAR 7771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ACK). If we want to do something else, we call that routine in 7781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * scripts and set temp to be the normal case + 8 (skipping the CLEAR 7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ACK) so that the routine returns correctly to resume its activity 7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * */ 7811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC __u32 7821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsprocess_extended_message(struct Scsi_Host *host, 7831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata, 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp, __u32 dsp, __u32 dsps) 7851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 resume_offset = dsp, temp = dsp + 8; 7871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 pun = 0xff, lun = 0xff; 7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 7901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pun = SCp->device->id; 7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lun = SCp->device->lun; 7921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch(hostdata->msgin[2]) { 7951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case A_SDTR_MSG: 7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL && NCR_700_is_flag_set(SCp->device, NCR_700_DEV_BEGIN_SYNC_NEGOTIATION)) { 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_target *starget = SCp->device->sdev_target; 7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 period = hostdata->msgin[3]; 7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 offset = hostdata->msgin[4]; 8001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(offset == 0 || period == 0) { 8021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset = 0; 8031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds period = 0; 8041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_offset(starget) = offset; 8071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_period(starget) = period; 8081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(NCR_700_is_flag_set(SCp->device, NCR_700_DEV_PRINT_SYNC_NEGOTIATION)) { 8101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_display_xfer_agreement(starget); 8111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_clear_flag(SCp->device, NCR_700_DEV_PRINT_SYNC_NEGOTIATION); 8121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_flag(SCp->device, NCR_700_DEV_NEGOTIATED_SYNC); 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_clear_flag(SCp->device, NCR_700_DEV_BEGIN_SYNC_NEGOTIATION); 8161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(NCR_700_get_SXFER(SCp->device), 8181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host, SXFER_REG); 8191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 8211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* SDTR message out of the blue, reject it */ 822017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik shost_printk(KERN_WARNING, host, 823017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik "Unexpected SDTR msg\n"); 8241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgout[0] = A_REJECT_MSG; 8251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->msgout, 1, DMA_TO_DEVICE); 8261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_16(hostdata->script, MessageCount, 1); 8271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* SendMsgOut returns, so set up the return 8281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * address */ 8291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_SendMessageWithATN; 8301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case A_WDTR_MSG: 8341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "scsi%d: (%d:%d), Unsolicited WDTR after CMD, Rejecting\n", 8351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun); 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 resume_offset = hostdata->pScript + Ent_SendMessageWithATN; 8401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 8441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "scsi%d (%d:%d): Unexpected message %s: ", 8451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, 8461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_phase[(dsps & 0xf00) >> 8]); 8471abfd370134553f3b47e3e40a0526e05001409c2Matthew Wilcox spi_print_msg(hostdata->msgin); 8481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("\n"); 8491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* just reject it */ 8501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgout[0] = A_REJECT_MSG; 8511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->msgout, 1, DMA_TO_DEVICE); 8521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_16(hostdata->script, MessageCount, 1); 8531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* SendMsgOut returns, so set up the return 8541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * address */ 8551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_SendMessageWithATN; 8561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writel(temp, host, TEMP_REG); 8581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return resume_offset; 8591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC __u32 8621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsprocess_message(struct Scsi_Host *host, struct NCR_700_Host_Parameters *hostdata, 8631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp, __u32 dsp, __u32 dsps) 8641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* work out where to return to */ 8661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 temp = dsp + 8, resume_offset = dsp; 8671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 pun = 0xff, lun = 0xff; 8681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 8701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pun = SCp->device->id; 8711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lun = SCp->device->lun; 8721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 8751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d (%d:%d): message %s: ", host->host_no, pun, lun, 8761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_phase[(dsps & 0xf00) >> 8]); 8771abfd370134553f3b47e3e40a0526e05001409c2Matthew Wilcox spi_print_msg(hostdata->msgin); 8781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("\n"); 8791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 8801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch(hostdata->msgin[0]) { 8821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case A_EXTENDED_MSG: 8841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = process_extended_message(host, hostdata, SCp, 8851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsp, dsps); 8861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case A_REJECT_MSG: 8891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL && NCR_700_is_flag_set(SCp->device, NCR_700_DEV_BEGIN_SYNC_NEGOTIATION)) { 8901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Rejected our sync negotiation attempt */ 8911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_period(SCp->device->sdev_target) = 8921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_offset(SCp->device->sdev_target) = 0; 8931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_flag(SCp->device, NCR_700_DEV_NEGOTIATED_SYNC); 8941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_clear_flag(SCp->device, NCR_700_DEV_BEGIN_SYNC_NEGOTIATION); 8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(SCp != NULL && NCR_700_get_tag_neg_state(SCp->device) == NCR_700_DURING_TAG_NEGOTIATION) { 8961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* rejected our first simple tag message */ 897017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik scmd_printk(KERN_WARNING, SCp, 898017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik "Rejected first tag queue attempt, turning off tag queueing\n"); 8991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* we're done negotiating */ 9001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_tag_neg_state(SCp->device, NCR_700_FINISHED_TAG_NEGOTIATION); 901017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik hostdata->tag_negotiated &= ~(1<<scmd_id(SCp)); 9021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->device->tagged_supported = 0; 9031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_deactivate_tcq(SCp->device, host->cmd_per_lun); 9041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 905017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik shost_printk(KERN_WARNING, host, 906017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik "(%d:%d) Unexpected REJECT Message %s\n", 907017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik pun, lun, 9081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_phase[(dsps & 0xf00) >> 8]); 9091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* however, just ignore it */ 9101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case A_PARITY_ERROR_MSG: 9141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d (%d:%d) Parity Error!\n", host->host_no, 9151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pun, lun); 9161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(host); 9171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case A_SIMPLE_TAG_MSG: 9191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "scsi%d (%d:%d) SIMPLE TAG %d %s\n", host->host_no, 9201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pun, lun, hostdata->msgin[1], 9211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_phase[(dsps & 0xf00) >> 8]); 9221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* just ignore it */ 9231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 9251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "scsi%d (%d:%d): Unexpected message %s: ", 9261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, 9271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_phase[(dsps & 0xf00) >> 8]); 9281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9291abfd370134553f3b47e3e40a0526e05001409c2Matthew Wilcox spi_print_msg(hostdata->msgin); 9301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("\n"); 9311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* just reject it */ 9321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgout[0] = A_REJECT_MSG; 9331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->msgout, 1, DMA_TO_DEVICE); 9341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_16(hostdata->script, MessageCount, 1); 9351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* SendMsgOut returns, so set up the return 9361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * address */ 9371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_SendMessageWithATN; 9381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writel(temp, host, TEMP_REG); 9421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set us up to receive another message */ 9431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->msgin, MSG_ARRAY_SIZE, DMA_FROM_DEVICE); 9441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return resume_offset; 9451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC __u32 9481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsprocess_script_interrupt(__u32 dsps, __u32 dsp, struct scsi_cmnd *SCp, 9491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *host, 9501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata) 9511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 resume_offset = 0; 9531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 pun = 0xff, lun=0xff; 9541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 9561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pun = SCp->device->id; 9571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lun = SCp->device->lun; 9581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(dsps == A_GOOD_STATUS_AFTER_STATUS) { 9611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG((" COMMAND COMPLETE, status=%02x\n", 9621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->status[0])); 9631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* OK, if TCQ still under negotiation, we now know it works */ 9641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (NCR_700_get_tag_neg_state(SCp->device) == NCR_700_DURING_TAG_NEGOTIATION) 9651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_tag_neg_state(SCp->device, 9661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_FINISHED_TAG_NEGOTIATION); 9671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* check for contingent allegiance contitions */ 9691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(status_byte(hostdata->status[0]) == CHECK_CONDITION || 9701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status_byte(hostdata->status[0]) == COMMAND_TERMINATED) { 9711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = 9721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_command_slot *)SCp->host_scribble; 9731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp->cmnd[0] == REQUEST_SENSE) { 9741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* OOPS: bad device, returning another 9751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * contingent allegiance condition */ 976017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik scmd_printk(KERN_ERR, SCp, 977017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik "broken device is looping in contingent allegiance: ignoring\n"); 9781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_scsi_done(hostdata, SCp, hostdata->status[0]); 9791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 98067d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley struct NCR_700_sense *sense = SCp->device->hostdata; 9811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_DEBUG 9821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 9831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(" cmd %p has status %d, requesting sense\n", 9841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp, hostdata->status[0]); 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 9861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* we can destroy the command here 9871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * because the contingent allegiance 9881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * condition will cause a retry which 9891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * will re-copy the command from the 9901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * saved data_cmnd. We also unmap any 9911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * data associated with the command 9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * here */ 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_unmap(hostdata, SCp, slot); 99467d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley dma_unmap_single(hostdata->dev, slot->pCmd, 99567d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley sizeof(SCp->cmnd), 99667d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley DMA_TO_DEVICE); 99767d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley 99867d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley sense->cmnd[0] = REQUEST_SENSE; 99967d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley sense->cmnd[1] = (SCp->device->lun & 0x7) << 5; 100067d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley sense->cmnd[2] = 0; 100167d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley sense->cmnd[3] = 0; 100267d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley sense->cmnd[4] = sizeof(SCp->sense_buffer); 100367d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley sense->cmnd[5] = 0; 10041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Here's a quiet hack: the 10051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * REQUEST_SENSE command is six bytes, 10061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * so store a flag indicating that 10071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this was an internal sense request 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * and the original status at the end 10091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * of the command */ 101067d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley sense->cmnd[6] = NCR_700_INTERNAL_SENSE_MAGIC; 101167d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley sense->cmnd[7] = hostdata->status[0]; 101267d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley slot->pCmd = dma_map_single(hostdata->dev, sense->cmnd, sizeof(sense->cmnd), DMA_TO_DEVICE); 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->dma_handle = dma_map_single(hostdata->dev, SCp->sense_buffer, sizeof(SCp->sense_buffer), DMA_FROM_DEVICE); 10141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[0].ins = bS_to_host(SCRIPT_MOVE_DATA_IN | sizeof(SCp->sense_buffer)); 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[0].pAddr = bS_to_host(slot->dma_handle); 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[1].ins = bS_to_host(SCRIPT_RETURN); 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[1].pAddr = 0; 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->resume_offset = hostdata->pScript; 10191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(slot->SG, sizeof(slot->SG[0])*2, DMA_TO_DEVICE); 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(SCp->sense_buffer, sizeof(SCp->sense_buffer), DMA_FROM_DEVICE); 10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* queue the command for reissue */ 10231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->state = NCR_700_SLOT_QUEUED; 102467d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley slot->flags = NCR_700_FLAG_AUTOSENSE; 10251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_FREE; 10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = NULL; 10271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 10291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // Currently rely on the mid layer evaluation 10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // of the tag queuing capability 10311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // 10321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds //if(status_byte(hostdata->status[0]) == GOOD && 10331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // SCp->cmnd[0] == INQUIRY && SCp->use_sg == 0) { 10341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // /* Piggy back the tag queueing support 10351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // * on this command */ 10361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // dma_sync_single_for_cpu(hostdata->dev, 10371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // slot->dma_handle, 10381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // SCp->request_bufflen, 10391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // DMA_FROM_DEVICE); 10401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // if(((char *)SCp->request_buffer)[7] & 0x02) { 1041017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik // scmd_printk(KERN_INFO, SCp, 1042017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik // "Enabling Tag Command Queuing\n"); 1043017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik // hostdata->tag_negotiated |= (1<<scmd_id(SCp)); 10441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // NCR_700_set_flag(SCp->device, NCR_700_DEV_BEGIN_TAG_QUEUEING); 10451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // } else { 10461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // NCR_700_clear_flag(SCp->device, NCR_700_DEV_BEGIN_TAG_QUEUEING); 1047017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik // hostdata->tag_negotiated &= ~(1<<scmd_id(SCp)); 10481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // } 10491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds //} 10501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_scsi_done(hostdata, SCp, hostdata->status[0]); 10511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if((dsps & 0xfffff0f0) == A_UNEXPECTED_PHASE) { 10531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 i = (dsps & 0xf00) >> 8; 10541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1055017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik scmd_printk(KERN_ERR, SCp, "UNEXPECTED PHASE %s (%s)\n", 10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_phase[i], 10571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbcl_to_string(NCR_700_readb(host, SBCL_REG))); 1058017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik scmd_printk(KERN_ERR, SCp, " len = %d, cmd =", 1059017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik SCp->cmd_len); 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 10611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(host); 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if((dsps & 0xfffff000) == A_FATAL) { 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i = (dsps & 0xfff); 10651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) FATAL ERROR: %s\n", 10671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, NCR_700_fatal_messages[i]); 10681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(dsps == A_FATAL_ILLEGAL_MSG_LENGTH) { 10691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR " msg begins %02x %02x\n", 10701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgin[0], hostdata->msgin[1]); 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(host); 10731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if((dsps & 0xfffff0f0) == A_DISCONNECT) { 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 10751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 i = (dsps & 0xf00) >> 8; 10761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d: (%d:%d), DISCONNECTED (%d) %s\n", 10781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, 10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds i, NCR_700_phase[i]); 10801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 10811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds save_for_reselection(hostdata, SCp, dsp); 10821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(dsps == A_RESELECTION_IDENTIFIED) { 10841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 lun; 10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot; 10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 reselection_id = hostdata->reselection_id; 10871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_device *SDp; 10881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lun = hostdata->msgin[0] & 0x1f; 10901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->reselection_id = 0xff; 10921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("scsi%d: (%d:%d) RESELECTED!\n", 10931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, reselection_id, lun)); 10941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear the reselection indicator */ 10951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SDp = __scsi_device_lookup(host, 0, reselection_id, lun); 10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(unlikely(SDp == NULL)) { 10971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) HAS NO device\n", 10981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, reselection_id, lun); 10991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BUG(); 11001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->msgin[1] == A_SIMPLE_TAG_MSG) { 11021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp = scsi_find_tag(SDp, hostdata->msgin[2]); 11031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(unlikely(SCp == NULL)) { 11041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) no saved request for tag %d\n", 11051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, reselection_id, lun, hostdata->msgin[2]); 11061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BUG(); 11071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot = (struct NCR_700_command_slot *)SCp->host_scribble; 1110017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik DDEBUG(KERN_DEBUG, SDp, 1111017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik "reselection is tag %d, slot %p(%d)\n", 1112017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik hostdata->msgin[2], slot, slot->tag); 11131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 11141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp = scsi_find_tag(SDp, SCSI_NO_TAG); 11151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(unlikely(SCp == NULL)) { 1116017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik sdev_printk(KERN_ERR, SDp, 1117017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik "no saved request for untagged cmd\n"); 11181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BUG(); 11191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot = (struct NCR_700_command_slot *)SCp->host_scribble; 11211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(slot == NULL) { 11241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) RESELECTED but no saved command (MSG = %02x %02x %02x)!!\n", 11251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, reselection_id, lun, 11261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgin[0], hostdata->msgin[1], 11271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgin[2]); 11281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 11291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->state != NCR_700_HOST_BUSY) 11301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: FATAL, host not busy during valid reselection!\n", 11311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no); 11321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = slot->resume_offset; 11331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = slot->cmnd; 11341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* re-patch for this command */ 11361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_32_abs(hostdata->script, CommandAddress, 11371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->pCmd); 11381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_16(hostdata->script, 11391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds CommandCount, slot->cmnd->cmd_len); 11401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_32_abs(hostdata->script, SGScriptStartAddress, 11411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds to32bit(&slot->pSG[0].ins)); 11421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Note: setting SXFER only works if we're 11441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * still in the MESSAGE phase, so it is vital 11451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * that ACK is still asserted when we process 11461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the reselection message. The resume offset 11471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * should therefore always clear ACK */ 11481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(NCR_700_get_SXFER(hostdata->cmd->device), 11491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host, SXFER_REG); 11501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->msgin, 11511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MSG_ARRAY_SIZE, DMA_FROM_DEVICE); 11521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->msgout, 11531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MSG_ARRAY_SIZE, DMA_TO_DEVICE); 11541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* I'm just being paranoid here, the command should 11551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * already have been flushed from the cache */ 11561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(slot->cmnd->cmnd, 11571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->cmnd->cmd_len, DMA_TO_DEVICE); 11581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(dsps == A_RESELECTED_DURING_SELECTION) { 11631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* This section is full of debugging code because I've 11651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * never managed to reach it. I think what happens is 11661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * that, because the 700 runs with selection 11671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * interrupts enabled the whole time that we take a 11681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * selection interrupt before we manage to get to the 11691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * reselected script interrupt */ 11701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 reselection_id = NCR_700_readb(host, SFBR_REG); 11721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot; 11731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Take out our own ID */ 11751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds reselection_id &= ~(1<<host->this_id); 11761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* I've never seen this happen, so keep this as a printk rather 11781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * than a debug */ 11791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "scsi%d: (%d:%d) RESELECTION DURING SELECTION, dsp=%08x[%04x] state=%d, count=%d\n", 11801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, reselection_id, lun, dsp, dsp - hostdata->pScript, hostdata->state, hostdata->command_slot_count); 11811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 11831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME: DEBUGGING CODE */ 11841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 SG = (__u32)bS_to_cpu(hostdata->script[A_SGScriptStartAddress_used[0]]); 11851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 11861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i=0; i< NCR_700_COMMAND_SLOTS_PER_HOST; i++) { 11881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SG >= to32bit(&hostdata->slots[i].pSG[0]) 11891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && SG <= to32bit(&hostdata->slots[i].pSG[NCR_700_SG_SEGMENTS])) 11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus 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); 11931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp = hostdata->slots[i].cmnd; 11941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 11971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot = (struct NCR_700_command_slot *)SCp->host_scribble; 11981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* change slot from busy to queued to redo command */ 11991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->state = NCR_700_SLOT_QUEUED; 12001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = NULL; 12021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(reselection_id == 0) { 12041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->reselection_id == 0xff) { 12051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: Invalid reselection during selection!!\n", host->host_no); 12061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 12071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 12081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: script reselected and we took a selection interrupt\n", 12091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no); 12101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds reselection_id = hostdata->reselection_id; 12111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 12131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* convert to real ID */ 12151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds reselection_id = bitmap_to_number(reselection_id); 12161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->reselection_id = reselection_id; 12181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* just in case we have a stale simple tag message, clear it */ 12191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgin[1] = 0; 12201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->msgin, 12211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MSG_ARRAY_SIZE, DMA_BIDIRECTIONAL); 12221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->tag_negotiated & (1<<reselection_id)) { 12231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_GetReselectionWithTag; 12241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 12251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_GetReselectionData; 12261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(dsps == A_COMPLETED_SELECTION_AS_TARGET) { 12281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* we've just disconnected from the bus, do nothing since 12291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * a return here will re-run the queued command slot 12301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * that may have been interrupted by the initial selection */ 12311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG((" SELECTION COMPLETED\n")); 12321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if((dsps & 0xfffff0f0) == A_MSG_IN) { 12331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = process_message(host, hostdata, SCp, 12341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsp, dsps); 12351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if((dsps & 0xfffff000) == 0) { 12361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 i = (dsps & 0xf0) >> 4, j = (dsps & 0xf00) >> 8; 12371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d), unhandled script condition %s %s at %04x\n", 12381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, NCR_700_condition[i], 12391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_phase[j], dsp - hostdata->pScript); 12401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 12411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 12421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp->use_sg) { 12441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i = 0; i < SCp->use_sg + 1; i++) { 124567d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley printk(KERN_INFO " SG[%d].length = %d, move_insn=%08x, addr %08x\n", i, ((struct scatterlist *)SCp->request_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); 12461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(host); 12501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if((dsps & 0xfffff000) == A_DEBUG_INTERRUPT) { 12511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_NOTICE "scsi%d (%d:%d) DEBUG INTERRUPT %d AT %08x[%04x], continuing\n", 12521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, dsps & 0xfff, dsp, dsp - hostdata->pScript); 12531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = dsp; 12541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 12551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d), unidentified script interrupt 0x%x at %04x\n", 12561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, dsps, dsp - hostdata->pScript); 12571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(host); 12581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return resume_offset; 12601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* We run the 53c700 with selection interrupts always enabled. This 12631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * means that the chip may be selected as soon as the bus frees. On a 12641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * busy bus, this can be before the scripts engine finishes its 12651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * processing. Therefore, part of the selection processing has to be 12661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to find out what the scripts engine is doing and complete the 12671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * function if necessary (i.e. process the pending disconnect or save 12681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the interrupted initial selection */ 12691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC inline __u32 12701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsprocess_selection(struct Scsi_Host *host, __u32 dsp) 12711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 id = 0; /* Squash compiler warning */ 12731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int count = 0; 12741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 resume_offset = 0; 12751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 12761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)host->hostdata[0]; 12771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp = hostdata->cmd; 12781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 sbcl; 12791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(count = 0; count < 5; count++) { 12811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id = NCR_700_readb(host, hostdata->chip710 ? 12821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds CTEST9_REG : SFBR_REG); 12831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Take out our own ID */ 12851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id &= ~(1<<host->this_id); 12861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(id != 0) 12871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 12881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(5); 12891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbcl = NCR_700_readb(host, SBCL_REG); 12911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if((sbcl & SBCL_IO) == 0) { 12921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* mark as having been selected rather than reselected */ 12931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id = 0xff; 12941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 12951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* convert to real ID */ 12961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->reselection_id = id = bitmap_to_number(id); 12971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("scsi%d: Reselected by %d\n", 12981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, id)); 12991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->state == NCR_700_HOST_BUSY && SCp != NULL) { 13011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = 13021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_command_slot *)SCp->host_scribble; 13031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus 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)); 13041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch(dsp - hostdata->pScript) { 13061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect1: 13071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect2: 13081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds save_for_reselection(hostdata, SCp, Ent_Disconnect2 + hostdata->pScript); 13091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect3: 13111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect4: 13121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds save_for_reselection(hostdata, SCp, Ent_Disconnect4 + hostdata->pScript); 13131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect5: 13151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect6: 13161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds save_for_reselection(hostdata, SCp, Ent_Disconnect6 + hostdata->pScript); 13171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect7: 13191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect8: 13201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds save_for_reselection(hostdata, SCp, Ent_Disconnect8 + hostdata->pScript); 13211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Finish1: 13231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Finish2: 13241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds process_script_interrupt(A_GOOD_STATUS_AFTER_STATUS, dsp, SCp, host, hostdata); 13251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 13281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->state = NCR_700_SLOT_QUEUED; 13291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_BUSY; 13331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = NULL; 13341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear any stale simple tag message */ 13351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgin[1] = 0; 13361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->msgin, MSG_ARRAY_SIZE, 13371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DMA_BIDIRECTIONAL); 13381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(id == 0xff) { 13401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Selected as target, Ignore */ 13411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_SelectedAsTarget; 13421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(hostdata->tag_negotiated & (1<<id)) { 13431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_GetReselectionWithTag; 13441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 13451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_GetReselectionData; 13461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return resume_offset; 13481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void 13511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_clear_fifo(struct Scsi_Host *host) { 13521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const struct NCR_700_Host_Parameters *hostdata 13531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds = (struct NCR_700_Host_Parameters *)host->hostdata[0]; 13541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->chip710) { 13551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(CLR_FIFO_710, host, CTEST8_REG); 13561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 13571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(CLR_FIFO, host, DFIFO_REG); 13581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void 13621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_flush_fifo(struct Scsi_Host *host) { 13631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const struct NCR_700_Host_Parameters *hostdata 13641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds = (struct NCR_700_Host_Parameters *)host->hostdata[0]; 13651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->chip710) { 13661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(FLUSH_DMA_FIFO_710, host, CTEST8_REG); 13671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(10); 13681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(0, host, CTEST8_REG); 13691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 13701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(FLUSH_DMA_FIFO, host, DFIFO_REG); 13711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(10); 13721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(0, host, DFIFO_REG); 13731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* The queue lock with interrupts disabled must be held on entry to 13781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this function */ 13791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int 13801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_start_command(struct scsi_cmnd *SCp) 13811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = 13831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_command_slot *)SCp->host_scribble; 13841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 13851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SCp->device->host->hostdata[0]; 13861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u16 count = 1; /* for IDENTIFY message */ 13871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->state != NCR_700_HOST_FREE) { 13891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* keep this inside the lock to close the race window where 13901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the running command finishes on another CPU while we don't 13911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * change the state to queued on this one */ 13921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->state = NCR_700_SLOT_QUEUED; 13931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("scsi%d: host busy, queueing command %p, slot %p\n", 13951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->device->host->host_no, slot->cmnd, slot)); 13961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 13971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_BUSY; 13991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = SCp; 14001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->state = NCR_700_SLOT_BUSY; 14011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* keep interrupts disabled until we have the command correctly 14021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * set up so we cannot take a selection interrupt */ 14031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 140467d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley hostdata->msgout[0] = NCR_700_identify((SCp->cmnd[0] != REQUEST_SENSE && 140567d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley slot->flags != NCR_700_FLAG_AUTOSENSE), 14061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->device->lun); 14071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* for INQUIRY or REQUEST_SENSE commands, we cannot be sure 14081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * if the negotiated transfer parameters still hold, so 14091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * always renegotiate them */ 141067d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley if(SCp->cmnd[0] == INQUIRY || SCp->cmnd[0] == REQUEST_SENSE || 141167d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley slot->flags == NCR_700_FLAG_AUTOSENSE) { 14121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_clear_flag(SCp->device, NCR_700_DEV_NEGOTIATED_SYNC); 14131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* REQUEST_SENSE is asking for contingent I_T_L(_Q) status. 14161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If a contingent allegiance condition exists, the device 14171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * will refuse all tags, so send the request sense as untagged 14181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * */ 1419422c0d61d591cbfb70f029e13505fb437e169d68Jeff Garzik if((hostdata->tag_negotiated & (1<<scmd_id(SCp))) 142067d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley && (slot->tag != SCSI_NO_TAG && SCp->cmnd[0] != REQUEST_SENSE && 142167d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley slot->flags != NCR_700_FLAG_AUTOSENSE)) { 14221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count += scsi_populate_tag_msg(SCp, &hostdata->msgout[count]); 14231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->fast && 14261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_is_flag_clear(SCp->device, NCR_700_DEV_NEGOTIATED_SYNC)) { 14276ea3c0b2dac0d6a857d6bc010e544f4c901fff78Matthew Wilcox count += spi_populate_sync_msg(&hostdata->msgout[count], 14286ea3c0b2dac0d6a857d6bc010e544f4c901fff78Matthew Wilcox spi_period(SCp->device->sdev_target), 14296ea3c0b2dac0d6a857d6bc010e544f4c901fff78Matthew Wilcox spi_offset(SCp->device->sdev_target)); 14301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_flag(SCp->device, NCR_700_DEV_BEGIN_SYNC_NEGOTIATION); 14311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_16(hostdata->script, MessageCount, count); 14341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_ID(hostdata->script, 1437422c0d61d591cbfb70f029e13505fb437e169d68Jeff Garzik Device_ID, 1<<scmd_id(SCp)); 14381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_32_abs(hostdata->script, CommandAddress, 14401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->pCmd); 14411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_16(hostdata->script, CommandCount, SCp->cmd_len); 14421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* finally plumb the beginning of the SG list into the script 14431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * */ 14441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script_patch_32_abs(hostdata->script, SGScriptStartAddress, 14451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds to32bit(&slot->pSG[0].ins)); 14461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_clear_fifo(SCp->device->host); 14471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(slot->resume_offset == 0) 14491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->resume_offset = hostdata->pScript; 14501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* now perform all the writebacks and invalidates */ 14511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->msgout, count, DMA_TO_DEVICE); 14521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->msgin, MSG_ARRAY_SIZE, 14531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DMA_FROM_DEVICE); 14541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(SCp->cmnd, SCp->cmd_len, DMA_TO_DEVICE); 14551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(hostdata->status, 1, DMA_FROM_DEVICE); 14561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set the synchronous period/offset */ 14581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(NCR_700_get_SXFER(SCp->device), 14591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->device->host, SXFER_REG); 14601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writel(slot->temp, SCp->device->host, TEMP_REG); 14611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writel(slot->resume_offset, SCp->device->host, DSP_REG); 14621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 14641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsirqreturn_t 14671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_intr(int irq, void *dev_id, struct pt_regs *regs) 14681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *host = (struct Scsi_Host *)dev_id; 14701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 14711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)host->hostdata[0]; 14721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 istat; 14731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 resume_offset = 0; 14741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 pun = 0xff, lun = 0xff; 14751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 14761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int handled = 0; 14771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Use the host lock to serialise acess to the 53c700 14791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * hardware. Note: In future, we may need to take the queue 14801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * lock to enter the done routines. When that happens, we 14811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * need to ensure that for this driver, the host lock and the 14821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * queue lock point to the same thing. */ 14831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(host->host_lock, flags); 14841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if((istat = NCR_700_readb(host, ISTAT_REG)) 14851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds & (SCSI_INT_PENDING | DMA_INT_PENDING)) { 14861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 dsps; 14871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 sstat0 = 0, dstat = 0; 14881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 dsp; 14891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp = hostdata->cmd; 14901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enum NCR_700_Host_State state; 14911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds handled = 1; 14931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds state = hostdata->state; 14941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp = hostdata->cmd; 14951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(istat & SCSI_INT_PENDING) { 14971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(10); 14981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sstat0 = NCR_700_readb(host, SSTAT0_REG); 15001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(istat & DMA_INT_PENDING) { 15031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(10); 15041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dstat = NCR_700_readb(host, DSTAT_REG); 15061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsps = NCR_700_readl(host, DSPS_REG); 15091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsp = NCR_700_readl(host, DSP_REG); 15101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("scsi%d: istat %02x sstat0 %02x dstat %02x dsp %04x[%08x] dsps 0x%x\n", 15121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, istat, sstat0, dstat, 15131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (dsp - (__u32)(hostdata->pScript))/4, 15141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsp, dsps)); 15151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 15171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pun = SCp->device->id; 15181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lun = SCp->device->lun; 15191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(sstat0 & SCSI_RESET_DETECTED) { 15221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_device *SDp; 15231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 15241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_BUSY; 15261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: Bus Reset detected, executing command %p, slot %p, dsp %08x[%04x]\n", 15281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, SCp, SCp == NULL ? NULL : SCp->host_scribble, dsp, dsp - hostdata->pScript); 15291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_report_bus_reset(host, 0); 15311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear all the negotiated parameters */ 15331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __shost_for_each_device(SDp, host) 15341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SDp->hostdata = NULL; 15351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear all the slots and their pending commands */ 15371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i = 0; i < NCR_700_COMMAND_SLOTS_PER_HOST; i++) { 15381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp; 15391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = 15401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &hostdata->slots[i]; 15411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(slot->state == NCR_700_SLOT_FREE) 15431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 15441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp = slot->cmnd; 15461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR " failing command because of reset, slot %p, cmnd %p\n", 15471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot, SCp); 15481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_slot(slot, hostdata); 15491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->host_scribble = NULL; 15501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_depth(SCp->device, 0); 15511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* NOTE: deadlock potential here: we 15521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * rely on mid-layer guarantees that 15531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * scsi_done won't try to issue the 15541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * command again otherwise we'll 15551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * deadlock on the 15561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * hostdata->state_lock */ 15571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->result = DID_RESET << 16; 15581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->scsi_done(SCp); 15591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mdelay(25); 15611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_chip_setup(host); 15621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_FREE; 15641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = NULL; 15651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* signal back if this was an eh induced reset */ 15661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->eh_complete != NULL) 15671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds complete(hostdata->eh_complete); 15681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_unlock; 15691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(sstat0 & SELECTION_TIMEOUT) { 15701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("scsi%d: (%d:%d) selection timeout\n", 15711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun)); 15721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_scsi_done(hostdata, SCp, DID_NO_CONNECT<<16); 15731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(sstat0 & PHASE_MISMATCH) { 15741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = (SCp == NULL) ? NULL : 15751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_command_slot *)SCp->host_scribble; 15761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(dsp == Ent_SendMessage + 8 + hostdata->pScript) { 15781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* It wants to reply to some part of 15791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * our message */ 15801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 15811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 temp = NCR_700_readl(host, TEMP_REG); 15821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int count = (hostdata->script[Ent_SendMessage/4] & 0xffffff) - ((NCR_700_readl(host, DBC_REG) & 0xffffff) + NCR_700_data_residual(host)); 15831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus 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))); 15841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 15851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_SendMessagePhaseMismatch; 15861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(dsp >= to32bit(&slot->pSG[0].ins) && 15871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsp <= to32bit(&slot->pSG[NCR_700_SG_SEGMENTS].ins)) { 15881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int data_transfer = NCR_700_readl(host, DBC_REG) & 0xffffff; 15891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int SGcount = (dsp - to32bit(&slot->pSG[0].ins))/sizeof(struct NCR_700_SG_List); 15901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int residual = NCR_700_data_residual(host); 15911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 15921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 15931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 naddr = NCR_700_readl(host, DNAD_REG); 15941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d: (%d:%d) Expected phase mismatch in slot->SG[%d], transferred 0x%x\n", 15961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, 15971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SGcount, data_transfer); 15981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 15991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(residual) { 16001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d: (%d:%d) Expected phase mismatch in slot->SG[%d], transferred 0x%x, residual %d\n", 16011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, 16021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SGcount, data_transfer, residual); 16031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 16051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data_transfer += residual; 16061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(data_transfer != 0) { 16081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int count; 16091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 pAddr; 16101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SGcount--; 16121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count = (bS_to_cpu(slot->SG[SGcount].ins) & 0x00ffffff); 16141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("DATA TRANSFER MISMATCH, count = %d, transferred %d\n", count, count-data_transfer)); 16151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[SGcount].ins &= bS_to_host(0xff000000); 16161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[SGcount].ins |= bS_to_host(data_transfer); 16171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pAddr = bS_to_cpu(slot->SG[SGcount].pAddr); 16181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pAddr += (count - data_transfer); 16191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 16201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(pAddr != naddr) { 16211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus 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); 16221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 16241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[SGcount].pAddr = bS_to_host(pAddr); 16251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set the executed moves to nops */ 16271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i=0; i<SGcount; i++) { 16281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[i].ins = bS_to_host(SCRIPT_NOP); 16291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[i].pAddr = 0; 16301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(slot->SG, sizeof(slot->SG), DMA_TO_DEVICE); 16321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* and pretend we disconnected after 16331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the command phase */ 16341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_MsgInDuringData; 16351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* make sure all the data is flushed */ 16361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_flush_fifo(host); 16371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 16381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 sbcl = NCR_700_readb(host, SBCL_REG); 16391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) phase mismatch at %04x, phase %s\n", 16401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, dsp - hostdata->pScript, sbcl_to_string(sbcl)); 16411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(host); 16421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(sstat0 & SCSI_GROSS_ERROR) { 16451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) GROSS ERROR\n", 16461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun); 16471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_scsi_done(hostdata, SCp, DID_ERROR<<16); 16481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(sstat0 & PARITY_ERROR) { 16491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) PARITY ERROR\n", 16501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun); 16511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_scsi_done(hostdata, SCp, DID_ERROR<<16); 16521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(dstat & SCRIPT_INT_RECEIVED) { 16531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("scsi%d: (%d:%d) ====>SCRIPT INTERRUPT<====\n", 16541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun)); 16551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = process_script_interrupt(dsps, dsp, SCp, host, hostdata); 16561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(dstat & (ILGL_INST_DETECTED)) { 16571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) Illegal Instruction detected at 0x%08x[0x%x]!!!\n" 16581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds " Please email James.Bottomley@HansenPartnership.com with the details\n", 16591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, 16601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsp, dsp - hostdata->pScript); 16611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_scsi_done(hostdata, SCp, DID_ERROR<<16); 16621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(dstat & (WATCH_DOG_INTERRUPT|ABORTED)) { 16631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) serious DMA problem, dstat=%02x\n", 16641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, dstat); 16651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_scsi_done(hostdata, SCp, DID_ERROR<<16); 16661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* NOTE: selection interrupt processing MUST occur 16701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * after script interrupt processing to correctly cope 16711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * with the case where we process a disconnect and 16721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * then get reselected before we process the 16731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * disconnection */ 16741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(sstat0 & SELECTED) { 16751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME: It currently takes at least FOUR 16761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * interrupts to complete a command that 16771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * disconnects: one for the disconnect, one 16781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for the reselection, one to get the 16791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * reselection data and one to complete the 16801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * command. If we guess the reselected 16811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * command here and prepare it, we only need 16821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to get a reselection data interrupt if we 16831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * guessed wrongly. Since the interrupt 16841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * overhead is much greater than the command 16851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * setup, this would be an efficient 16861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * optimisation particularly as we probably 16871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * only have one outstanding command on a 16881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * target most of the time */ 16891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = process_selection(host, dsp); 16911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(resume_offset) { 16971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->state != NCR_700_HOST_BUSY) { 16981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: Driver error: resume at 0x%08x [0x%04x] with non busy host!\n", 16991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, resume_offset, resume_offset - hostdata->pScript); 17001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_BUSY; 17011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("Attempting to resume at %x\n", resume_offset)); 17041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_clear_fifo(host); 17051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writel(resume_offset, host, DSP_REG); 17061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* There is probably a technical no-no about this: If we're a 17081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * shared interrupt and we got this interrupt because the 17091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * other device needs servicing not us, we're still going to 17101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * check our queued commands here---of course, there shouldn't 17111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * be any outstanding.... */ 17121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->state == NCR_700_HOST_FREE) { 17131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 17141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i = 0; i < NCR_700_COMMAND_SLOTS_PER_HOST; i++) { 17161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* fairness: always run the queue from the last 17171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * position we left off */ 17181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int j = (i + hostdata->saved_slot_position) 17191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds % NCR_700_COMMAND_SLOTS_PER_HOST; 17201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->slots[j].state != NCR_700_SLOT_QUEUED) 17221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 17231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(NCR_700_start_command(hostdata->slots[j].cmnd)) { 17241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("scsi%d: Issuing saved command slot %p, cmd %p\t\n", 17251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, &hostdata->slots[j], 17261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->slots[j].cmnd)); 17271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->saved_slot_position = j + 1; 17281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 17311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds out_unlock: 17341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(host->host_lock, flags); 17351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return IRQ_RETVAL(handled); 17361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int 17391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_queuecommand(struct scsi_cmnd *SCp, void (*done)(struct scsi_cmnd *)) 17401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 17421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SCp->device->host->hostdata[0]; 17431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 move_ins; 17441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enum dma_data_direction direction; 17451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot; 17461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->command_slot_count >= NCR_700_COMMAND_SLOTS_PER_HOST) { 17481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* We're over our allocation, this should never happen 17491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * since we report the max allocation to the mid layer */ 17501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "scsi%d: Command depth has gone over queue depth\n", SCp->device->host->host_no); 17511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 17521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* check for untagged commands. We cannot have any outstanding 17541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * commands if we accept them. Commands could be untagged because: 17551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - The tag negotiated bitmap is clear 17571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - The blk layer sent and untagged command 17581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 17591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(NCR_700_get_depth(SCp->device) != 0 1760017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik && (!(hostdata->tag_negotiated & (1<<scmd_id(SCp))) 17611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || !blk_rq_tagged(SCp->request))) { 1762017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik CDEBUG(KERN_ERR, SCp, "has non zero depth %d\n", 1763017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik NCR_700_get_depth(SCp->device)); 17641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return SCSI_MLQUEUE_DEVICE_BUSY; 17651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(NCR_700_get_depth(SCp->device) >= SCp->device->queue_depth) { 1767017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik CDEBUG(KERN_ERR, SCp, "has max tag depth %d\n", 1768017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik NCR_700_get_depth(SCp->device)); 17691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return SCSI_MLQUEUE_DEVICE_BUSY; 17701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_depth(SCp->device, NCR_700_get_depth(SCp->device) + 1); 17721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* begin the command here */ 17741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* no need to check for NULL, test for command_slot_count above 17751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ensures a slot is free */ 17761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot = find_empty_slot(hostdata); 17771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->cmnd = SCp; 17791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->scsi_done = done; 17811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->host_scribble = (unsigned char *)slot; 17821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->SCp.ptr = NULL; 17831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->SCp.buffer = NULL; 17841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 17861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("53c700: scsi%d, command ", SCp->device->host->host_no); 17871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 17881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 17891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(blk_rq_tagged(SCp->request) 1790017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik && (hostdata->tag_negotiated &(1<<scmd_id(SCp))) == 0 17911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && NCR_700_get_tag_neg_state(SCp->device) == NCR_700_START_TAG_NEGOTIATION) { 1792017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik scmd_printk(KERN_ERR, SCp, "Enabling Tag Command Queuing\n"); 1793017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik hostdata->tag_negotiated |= (1<<scmd_id(SCp)); 17941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_tag_neg_state(SCp->device, NCR_700_DURING_TAG_NEGOTIATION); 17951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* here we may have to process an untagged command. The gate 17981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * above ensures that this will be the only one outstanding, 17991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * so clear the tag negotiated bit. 18001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FIXME: This will royally screw up on multiple LUN devices 18021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * */ 18031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(!blk_rq_tagged(SCp->request) 1804017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik && (hostdata->tag_negotiated &(1<<scmd_id(SCp)))) { 1805017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik scmd_printk(KERN_INFO, SCp, "Disabling Tag Command Queuing\n"); 1806017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik hostdata->tag_negotiated &= ~(1<<scmd_id(SCp)); 18071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1809017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik if((hostdata->tag_negotiated &(1<<scmd_id(SCp))) 18101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && scsi_get_tag_type(SCp->device)) { 18111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->tag = SCp->request->tag; 1812017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik CDEBUG(KERN_DEBUG, SCp, "sending out tag %d, slot %p\n", 1813017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik slot->tag, slot); 18141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 18151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->tag = SCSI_NO_TAG; 18161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* must populate current_cmnd for scsi_find_tag to work */ 18171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->device->current_cmnd = SCp; 18181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* sanity check: some of the commands generated by the mid-layer 18201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * have an eccentric idea of their sc_data_direction */ 18211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(!SCp->use_sg && !SCp->request_bufflen 18221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && SCp->sc_data_direction != DMA_NONE) { 18231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 18241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("53c700: Command"); 18251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 18261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("Has wrong data direction %d\n", SCp->sc_data_direction); 18271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 18281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->sc_data_direction = DMA_NONE; 18291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (SCp->cmnd[0]) { 18321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case REQUEST_SENSE: 18331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear the internal sense magic */ 18341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->cmnd[6] = 0; 18351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* fall through */ 18361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 18371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* OK, get it from the command */ 18381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch(SCp->sc_data_direction) { 18391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case DMA_BIDIRECTIONAL: 18401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 18411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "53c700: Unknown command for data direction "); 18421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 18431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds move_ins = 0; 18451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 18461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case DMA_NONE: 18471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds move_ins = 0; 18481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 18491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case DMA_FROM_DEVICE: 18501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds move_ins = SCRIPT_MOVE_DATA_IN; 18511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 18521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case DMA_TO_DEVICE: 18531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds move_ins = SCRIPT_MOVE_DATA_OUT; 18541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 18551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* now build the scatter gather list */ 18591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds direction = SCp->sc_data_direction; 18601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(move_ins != 0) { 18611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 18621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int sg_count; 18631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_addr_t vPtr = 0; 18641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 count = 0; 18651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp->use_sg) { 186767d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley sg_count = dma_map_sg(hostdata->dev, 186867d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley SCp->request_buffer, SCp->use_sg, 186967d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley direction); 18701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 18711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds vPtr = dma_map_single(hostdata->dev, 18721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->request_buffer, 18731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->request_bufflen, 18741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds direction); 18751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count = SCp->request_bufflen; 18761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->dma_handle = vPtr; 18771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sg_count = 1; 18781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i = 0; i < sg_count; i++) { 18821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp->use_sg) { 188467d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley struct scatterlist *sg = SCp->request_buffer; 18851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds vPtr = sg_dma_address(&sg[i]); 18871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count = sg_dma_len(&sg[i]); 18881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[i].ins = bS_to_host(move_ins | count); 18911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG((" scatter block %d: move %d[%08x] from 0x%lx\n", 18921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds i, count, slot->SG[i].ins, (unsigned long)vPtr)); 18931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[i].pAddr = bS_to_host(vPtr); 18941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[i].ins = bS_to_host(SCRIPT_RETURN); 18961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[i].pAddr = 0; 18971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_cache_sync(slot->SG, sizeof(slot->SG), DMA_TO_DEVICE); 18981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG((" SETTING %08lx to %x\n", 18991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (&slot->pSG[i].ins), 19001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[i].ins)); 19011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->resume_offset = 0; 19031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->pCmd = dma_map_single(hostdata->dev, SCp->cmnd, 19041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sizeof(SCp->cmnd), DMA_TO_DEVICE); 19051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_start_command(SCp); 19061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 19071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int 19101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_abort(struct scsi_cmnd * SCp) 19111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot; 19131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1914017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik scmd_printk(KERN_INFO, SCp, 1915017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik "New error handler wants to abort command\n\t"); 19161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 19171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot = (struct NCR_700_command_slot *)SCp->host_scribble; 19191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(slot == NULL) 19211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* no outstanding command to abort */ 19221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return SUCCESS; 19231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp->cmnd[0] == TEST_UNIT_READY) { 19241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME: This is because of a problem in the new 19251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * error handler. When it is in error recovery, it 19261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * will send a TUR to a device it thinks may still be 19271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * showing a problem. If the TUR isn't responded to, 19281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it will abort it and mark the device off line. 19291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Unfortunately, it does no other error recovery, so 19301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this would leave us with an outstanding command 19311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * occupying a slot. Rather than allow this to 19321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * happen, we issue a bus reset to force all 19331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * outstanding commands to terminate here. */ 19341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(SCp->device->host); 19351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* still drop through and return failed */ 19361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return FAILED; 19381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int 19421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_bus_reset(struct scsi_cmnd * SCp) 19431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DECLARE_COMPLETION(complete); 19451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 19461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SCp->device->host->hostdata[0]; 19471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1948017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik scmd_printk(KERN_INFO, SCp, 1949017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik "New error handler wants BUS reset, cmd %p\n\t", SCp); 19501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 195168b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik 19521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* In theory, eh_complete should always be null because the 19531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * eh is single threaded, but just in case we're handling a 19541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * reset via sg or something */ 195568b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik spin_lock_irq(SCp->device->host->host_lock); 195668b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik while (hostdata->eh_complete != NULL) { 19571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irq(SCp->device->host->host_lock); 19581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msleep_interruptible(100); 19591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irq(SCp->device->host->host_lock); 19601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 196168b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik 19621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->eh_complete = &complete; 19631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(SCp->device->host); 196468b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik 19651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irq(SCp->device->host->host_lock); 19661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_for_completion(&complete); 19671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irq(SCp->device->host->host_lock); 196868b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik 19691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->eh_complete = NULL; 19701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Revalidate the transport parameters of the failing device */ 19711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->fast) 19721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_schedule_dv_device(SCp->device); 197368b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik 197468b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik spin_unlock_irq(SCp->device->host->host_lock); 19751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return SUCCESS; 19761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int 19791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_host_reset(struct scsi_cmnd * SCp) 19801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1981017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik scmd_printk(KERN_INFO, SCp, "New error handler wants HOST reset\n\t"); 19821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 19831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1984df0ae2497ddefd72a87f3a3b34ff32455d7d4ae0Jeff Garzik spin_lock_irq(SCp->device->host->host_lock); 1985df0ae2497ddefd72a87f3a3b34ff32455d7d4ae0Jeff Garzik 19861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(SCp->device->host); 19871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_chip_reset(SCp->device->host); 1988df0ae2497ddefd72a87f3a3b34ff32455d7d4ae0Jeff Garzik 1989df0ae2497ddefd72a87f3a3b34ff32455d7d4ae0Jeff Garzik spin_unlock_irq(SCp->device->host->host_lock); 1990df0ae2497ddefd72a87f3a3b34ff32455d7d4ae0Jeff Garzik 19911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return SUCCESS; 19921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 19951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_set_period(struct scsi_target *STp, int period) 19961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *SHp = dev_to_shost(STp->dev.parent); 19981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 19991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SHp->hostdata[0]; 20001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(!hostdata->fast) 20021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 20031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(period < hostdata->min_period) 20051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds period = hostdata->min_period; 20061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_period(STp) = period; 20081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_flags(STp) &= ~(NCR_700_DEV_NEGOTIATED_SYNC | 20091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_DEV_BEGIN_SYNC_NEGOTIATION); 20101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_flags(STp) |= NCR_700_DEV_PRINT_SYNC_NEGOTIATION; 20111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 20141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_set_offset(struct scsi_target *STp, int offset) 20151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *SHp = dev_to_shost(STp->dev.parent); 20171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 20181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SHp->hostdata[0]; 20191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int max_offset = hostdata->chip710 20201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ? NCR_710_MAX_OFFSET : NCR_700_MAX_OFFSET; 20211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(!hostdata->fast) 20231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 20241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(offset > max_offset) 20261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset = max_offset; 20271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if we're currently async, make sure the period is reasonable */ 20291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(spi_offset(STp) == 0 && (spi_period(STp) < hostdata->min_period || 20301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_period(STp) > 0xff)) 20311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_period(STp) = hostdata->min_period; 20321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_offset(STp) = offset; 20341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_flags(STp) &= ~(NCR_700_DEV_NEGOTIATED_SYNC | 20351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_DEV_BEGIN_SYNC_NEGOTIATION); 20361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_flags(STp) |= NCR_700_DEV_PRINT_SYNC_NEGOTIATION; 20371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int 20421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_slave_configure(struct scsi_device *SDp) 20431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 20451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SDp->host->hostdata[0]; 20461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 204767d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley SDp->hostdata = kmalloc(GFP_KERNEL, sizeof(struct NCR_700_sense)); 204867d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley 204967d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley if (!SDp->hostdata) 205067d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley return -ENOMEM; 205167d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley 20521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* to do here: allocate memory; build a queue_full list */ 20531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SDp->tagged_supported) { 20541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_set_tag_type(SDp, MSG_ORDERED_TAG); 20551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_activate_tcq(SDp, NCR_700_DEFAULT_TAGS); 20561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_tag_neg_state(SDp, NCR_700_START_TAG_NEGOTIATION); 20571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 20581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* initialise to default depth */ 20591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_adjust_queue_depth(SDp, 0, SDp->host->cmd_per_lun); 20601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->fast) { 20621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Find the correct offset and period via domain validation */ 20631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!spi_initial_dv(SDp->sdev_target)) 20641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_dv_device(SDp); 20651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 20661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_offset(SDp->sdev_target) = 0; 20671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_period(SDp->sdev_target) = 0; 20681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 20701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 20731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_slave_destroy(struct scsi_device *SDp) 20741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 207567d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley kfree(SDp->hostdata); 207667d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley SDp->hostdata = NULL; 20771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 20801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_change_queue_depth(struct scsi_device *SDp, int depth) 20811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (depth > NCR_700_MAX_TAGS) 20831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds depth = NCR_700_MAX_TAGS; 20841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_adjust_queue_depth(SDp, scsi_get_tag_type(SDp), depth); 20861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return depth; 20871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int NCR_700_change_queue_type(struct scsi_device *SDp, int tag_type) 20901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int change_tag = ((tag_type ==0 && scsi_get_tag_type(SDp) != 0) 20921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || (tag_type != 0 && scsi_get_tag_type(SDp) == 0)); 20931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 20941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SDp->host->hostdata[0]; 20951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_set_tag_type(SDp, tag_type); 20971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* We have a global (per target) flag to track whether TCQ is 20991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * enabled, so we'll be turning it off for the entire target here. 21001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * our tag algorithm will fail if we mix tagged and untagged commands, 21011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * so quiesce the device before doing this */ 21021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (change_tag) 21031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_target_quiesce(SDp->sdev_target); 21041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!tag_type) { 21061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* shift back to the default unqueued number of commands 21071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (the user can still raise this) */ 21081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_deactivate_tcq(SDp, SDp->host->cmd_per_lun); 2109422c0d61d591cbfb70f029e13505fb437e169d68Jeff Garzik hostdata->tag_negotiated &= ~(1 << sdev_id(SDp)); 21101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 21111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Here, we cleared the negotiation flag above, so this 21121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * will force the driver to renegotiate */ 21131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_activate_tcq(SDp, SDp->queue_depth); 21141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (change_tag) 21151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_tag_neg_state(SDp, NCR_700_START_TAG_NEGOTIATION); 21161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 21171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (change_tag) 21181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_target_resume(SDp->sdev_target); 21191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return tag_type; 21211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 212410523b3b82456e416cbaffcc24ea2246980aa746Yani IoannouNCR_700_show_active_tags(struct device *dev, struct device_attribute *attr, char *buf) 21251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_device *SDp = to_scsi_device(dev); 21271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return snprintf(buf, 20, "%d\n", NCR_700_get_depth(SDp)); 21291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct device_attribute NCR_700_active_tags_attr = { 21321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .attr = { 21331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .name = "active_tags", 21341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .mode = S_IRUGO, 21351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }, 21361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .show = NCR_700_show_active_tags, 21371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 21381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC struct device_attribute *NCR_700_dev_attrs[] = { 21401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &NCR_700_active_tags_attr, 21411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NULL, 21421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 21431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(NCR_700_detect); 21451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(NCR_700_release); 21461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(NCR_700_intr); 21471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct spi_function_template NCR_700_transport_functions = { 21491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_period = NCR_700_set_period, 21501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .show_period = 1, 21511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_offset = NCR_700_set_offset, 21521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .show_offset = 1, 21531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 21541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init NCR_700_init(void) 21561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_transport_template = spi_attach_transport(&NCR_700_transport_functions); 21581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(!NCR_700_transport_template) 21591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 21601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 21611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit NCR_700_exit(void) 21641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_release_transport(NCR_700_transport_template); 21661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(NCR_700_init); 21691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(NCR_700_exit); 21701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2171