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/kernel.h> 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/types.h> 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/string.h> 1205a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.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/init.h> 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/proc_fs.h> 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/blkdev.h> 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/interrupt.h> 130017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik#include <linux/device.h> 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/dma.h> 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/io.h> 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/pgtable.h> 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/byteorder.h> 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi.h> 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_cmnd.h> 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_dbg.h> 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_eh.h> 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_host.h> 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_tcq.h> 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_transport.h> 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <scsi/scsi_transport_spi.h> 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "53c700.h" 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* NOTE: For 64 bit drivers there are points in the code where we use 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * a non dereferenceable pointer to point to a structure in dma-able 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * memory (which is 32 bits) so that we can use all of the structure 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * operations but take the address at the end. This macro allows us 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to truncate the 64 bit pointer down to 32 bits without the compiler 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * complaining */ 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define to32bit(x) ((__u32)((unsigned long)(x))) 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define STATIC 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define STATIC static 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR("James Bottomley"); 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION("53c700 and 53c700-66 Driver"); 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* This is the script */ 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "53c700_d.h" 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 169f281233d3eba15fb225d21ae2e228fd4553d824aJeff GarzikSTATIC int NCR_700_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *); 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int NCR_700_abort(struct scsi_cmnd * SCpnt); 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int NCR_700_bus_reset(struct scsi_cmnd * SCpnt); 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int NCR_700_host_reset(struct scsi_cmnd * SCpnt); 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void NCR_700_chip_setup(struct Scsi_Host *host); 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void NCR_700_chip_reset(struct Scsi_Host *host); 1750f13fc09db68de92585558984bff1c51b87db72fJames BottomleySTATIC int NCR_700_slave_alloc(struct scsi_device *SDpnt); 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int NCR_700_slave_configure(struct scsi_device *SDpnt); 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void NCR_700_slave_destroy(struct scsi_device *SDpnt); 178e881a172dac4d9ea3b2a1540041d872963c269bdMike Christiestatic int NCR_700_change_queue_depth(struct scsi_device *SDpnt, int depth, int reason); 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int NCR_700_change_queue_type(struct scsi_device *SDpnt, int depth); 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC struct device_attribute *NCR_700_dev_attrs[]; 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC struct scsi_transport_template *NCR_700_transport_template = NULL; 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *NCR_700_phase[] = { 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "", 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "after selection", 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "before command phase", 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "after command phase", 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "after status phase", 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "after data in phase", 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "after data out phase", 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "during data phase", 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *NCR_700_condition[] = { 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "", 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "NOT MSG_OUT", 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "UNEXPECTED PHASE", 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "NOT MSG_IN", 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "UNEXPECTED MSG", 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "MSG_IN", 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "SDTR_MSG RECEIVED", 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "REJECT_MSG RECEIVED", 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "DISCONNECT_MSG RECEIVED", 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "MSG_OUT", 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "DATA_IN", 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *NCR_700_fatal_messages[] = { 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "unexpected message after reselection", 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "still MSG_OUT after message injection", 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "not MSG_IN after selection", 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "Illegal message length received", 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *NCR_700_SBCL_bits[] = { 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "IO ", 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "CD ", 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "MSG ", 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ATN ", 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "SEL ", 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "BSY ", 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ACK ", 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "REQ ", 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic char *NCR_700_SBCL_to_phase[] = { 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "DATA_OUT", 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "DATA_IN", 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "CMD_OUT", 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "STATE", 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ILLEGAL PHASE", 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ILLEGAL PHASE", 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "MSG OUT", 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "MSG IN", 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* This translates the SDTR message offset and period to a value 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * which can be loaded into the SXFER_REG. 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NOTE: According to SCSI-2, the true transfer period (in ns) is 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * actually four times this period value */ 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline __u8 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_offset_period_to_sxfer(struct NCR_700_Host_Parameters *hostdata, 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 offset, __u8 period) 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int XFERP; 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 min_xferp = (hostdata->chip710 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ? NCR_710_MIN_XFERP : NCR_700_MIN_XFERP); 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 max_offset = (hostdata->chip710 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ? NCR_710_MAX_OFFSET : NCR_700_MAX_OFFSET); 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(offset == 0) 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(period < hostdata->min_period) { 2606ea3c0b2dac0d6a857d6bc010e544f4c901fff78Matthew 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); 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds period = hostdata->min_period; 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds XFERP = (period*4 * hostdata->sync_clock)/1000 - 4; 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(offset > max_offset) { 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "53c700: Offset %d exceeds chip maximum, setting to %d\n", 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset, max_offset); 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset = max_offset; 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(XFERP < min_xferp) { 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds XFERP = min_xferp; 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (offset & 0x0f) | (XFERP & 0x07)<<4; 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline __u8 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_get_SXFER(struct scsi_device *SDp) 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SDp->host->hostdata[0]; 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NCR_700_offset_period_to_sxfer(hostdata, 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_offset(SDp->sdev_target), 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_period(SDp->sdev_target)); 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct Scsi_Host * 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_detect(struct scsi_host_template *tpnt, 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata, struct device *dev) 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_addr_t pScript, pSlots; 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 *memory; 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 *script; 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *host; 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds static int banner = 0; 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int j; 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(tpnt->sdev_attrs == NULL) 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->sdev_attrs = NCR_700_dev_attrs; 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memory = dma_alloc_noncoherent(hostdata->dev, TOTAL_MEM_SIZE, 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &pScript, GFP_KERNEL); 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(memory == NULL) { 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "53c700: Failed to allocate memory for driver, detatching\n"); 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script = (__u32 *)memory; 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgin = memory + MSGIN_OFFSET; 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgout = memory + MSGOUT_OFFSET; 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->status = memory + STATUS_OFFSET; 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->slots = (struct NCR_700_command_slot *)(memory + SLOTS_OFFSET); 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->dev = dev; 3136391a11375de5e2bb1eb8481e54619761dc65d9fTobias Klauser 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pSlots = pScript + SLOTS_OFFSET; 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Fill in the missing routines from the host template */ 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->queuecommand = NCR_700_queuecommand; 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->eh_abort_handler = NCR_700_abort; 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->eh_bus_reset_handler = NCR_700_bus_reset; 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->eh_host_reset_handler = NCR_700_host_reset; 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->can_queue = NCR_700_COMMAND_SLOTS_PER_HOST; 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->sg_tablesize = NCR_700_SG_SEGMENTS; 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->cmd_per_lun = NCR_700_CMD_PER_LUN; 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->use_clustering = ENABLE_CLUSTERING; 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->slave_configure = NCR_700_slave_configure; 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->slave_destroy = NCR_700_slave_destroy; 3270f13fc09db68de92585558984bff1c51b87db72fJames Bottomley tpnt->slave_alloc = NCR_700_slave_alloc; 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->change_queue_depth = NCR_700_change_queue_depth; 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->change_queue_type = NCR_700_change_queue_type; 3306391a11375de5e2bb1eb8481e54619761dc65d9fTobias Klauser 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(tpnt->name == NULL) 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->name = "53c700"; 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(tpnt->proc_name == NULL) 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tpnt->proc_name = "53c700"; 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host = scsi_host_alloc(tpnt, 4); 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!host) 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset(hostdata->slots, 0, sizeof(struct NCR_700_command_slot) 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NCR_700_COMMAND_SLOTS_PER_HOST); 3416391a11375de5e2bb1eb8481e54619761dc65d9fTobias Klauser for (j = 0; j < NCR_700_COMMAND_SLOTS_PER_HOST; j++) { 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_addr_t offset = (dma_addr_t)((unsigned long)&hostdata->slots[j].SG[0] 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds - (unsigned long)&hostdata->slots[0].SG[0]); 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->slots[j].pSG = (struct NCR_700_SG_List *)((unsigned long)(pSlots + offset)); 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(j == 0) 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->free_list = &hostdata->slots[j]; 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->slots[j-1].ITL_forw = &hostdata->slots[j]; 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->slots[j].state = NCR_700_SLOT_FREE; 3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3526391a11375de5e2bb1eb8481e54619761dc65d9fTobias Klauser for (j = 0; j < ARRAY_SIZE(SCRIPT); j++) 3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script[j] = bS_to_host(SCRIPT[j]); 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* adjust all labels to be bus physical */ 3566391a11375de5e2bb1eb8481e54619761dc65d9fTobias Klauser for (j = 0; j < PATCHES; j++) 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds script[LABELPATCHES[j]] = bS_to_host(pScript + SCRIPT[LABELPATCHES[j]]); 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* now patch up fixed addresses. */ 359d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle script_patch_32(hostdata->dev, script, MessageLocation, 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pScript + MSGOUT_OFFSET); 361d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle script_patch_32(hostdata->dev, script, StatusAddress, 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pScript + STATUS_OFFSET); 363d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle script_patch_32(hostdata->dev, script, ReceiveMsgAddress, 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pScript + MSGIN_OFFSET); 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->script = script; 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->pScript = pScript; 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_sync_single_for_device(hostdata->dev, pScript, sizeof(SCRIPT), DMA_TO_DEVICE); 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_FREE; 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = NULL; 3712b89dad0c7e3b03d45d9674ee9a7b49670df098eHannes Reinecke host->max_id = 8; 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->max_lun = NCR_700_MAX_LUNS; 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BUG_ON(NCR_700_transport_template == NULL); 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->transportt = NCR_700_transport_template; 37556fece20086ebe32bce2c0d74ceadd516b56baae<jejb@mulgrave.(none)> host->unique_id = (unsigned long)hostdata->base; 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->eh_complete = NULL; 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->hostdata[0] = (unsigned long)hostdata; 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* kick the chip */ 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(0xff, host, CTEST9_REG); 3806391a11375de5e2bb1eb8481e54619761dc65d9fTobias Klauser if (hostdata->chip710) 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->rev = (NCR_700_readb(host, CTEST8_REG)>>4) & 0x0f; 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->rev = (NCR_700_readb(host, CTEST7_REG)>>4) & 0x0f; 3841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->fast = (NCR_700_readb(host, CTEST9_REG) == 0); 3856391a11375de5e2bb1eb8481e54619761dc65d9fTobias Klauser if (banner == 0) { 3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_NOTICE "53c700: Version " NCR_700_VERSION " By James.Bottomley@HansenPartnership.com\n"); 3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds banner = 1; 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_NOTICE "scsi%d: %s rev %d %s\n", host->host_no, 3906391a11375de5e2bb1eb8481e54619761dc65d9fTobias Klauser hostdata->chip710 ? "53c710" : 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (hostdata->fast ? "53c700-66" : "53c700"), 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->rev, hostdata->differential ? 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "(Differential)" : ""); 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* reset the chip */ 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_chip_reset(host); 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (scsi_add_host(host, dev)) { 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_printk(KERN_ERR, dev, "53c700: scsi_add_host failed\n"); 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_host_put(host); 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_signalling(host) = hostdata->differential ? SPI_SIGNAL_HVD : 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SPI_SIGNAL_SE; 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return host; 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_release(struct Scsi_Host *host) 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)host->hostdata[0]; 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_free_noncoherent(hostdata->dev, TOTAL_MEM_SIZE, 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->script, hostdata->pScript); 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline __u8 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_identify(int can_disconnect, __u8 lun) 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return IDENTIFY_BASE | 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((can_disconnect) ? 0x40 : 0) | 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (lun & NCR_700_LUN_MASK); 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function : static int data_residual (Scsi_Host *host) 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Purpose : return residual data count of what's in the chip. If you 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * really want to know what this function is doing, it's almost a 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * direct transcription of the algorithm described in the 53c710 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * guide, except that the DBC and DFIFO registers are only 6 bits 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * wide on a 53c700. 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Inputs : host - SCSI host */ 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_data_residual (struct Scsi_Host *host) { 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)host->hostdata[0]; 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int count, synchronous = 0; 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int ddir; 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->chip710) { 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count = ((NCR_700_readb(host, DFIFO_REG) & 0x7f) - 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (NCR_700_readl(host, DBC_REG) & 0x7f)) & 0x7f; 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count = ((NCR_700_readb(host, DFIFO_REG) & 0x3f) - 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (NCR_700_readl(host, DBC_REG) & 0x3f)) & 0x3f; 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->fast) 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds synchronous = NCR_700_readb(host, SXFER_REG) & 0x0f; 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* get the data direction */ 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ddir = NCR_700_readb(host, CTEST0_REG) & 0x01; 4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ddir) { 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Receive */ 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (synchronous) 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count += (NCR_700_readb(host, SSTAT2_REG) & 0xf0) >> 4; 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (NCR_700_readb(host, SSTAT1_REG) & SIDL_REG_FULL) 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ++count; 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Send */ 4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 sstat = NCR_700_readb(host, SSTAT1_REG); 4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (sstat & SODL_REG_FULL) 4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ++count; 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (synchronous && (sstat & SODR_REG_FULL)) 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ++count; 4731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(count) 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("RESIDUAL IS %d (ddir %d)\n", count, ddir); 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return count; 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* print out the SCSI wires and corresponding phase from the SBCL register 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * in the chip */ 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline char * 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldssbcl_to_string(__u8 sbcl) 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds static char ret[256]; 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret[0]='\0'; 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i=0; i<8; i++) { 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if((1<<i) & sbcl) 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(ret, NCR_700_SBCL_bits[i]); 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds strcat(ret, NCR_700_SBCL_to_phase[sbcl & 0x07]); 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ret; 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline __u8 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsbitmap_to_number(__u8 bitmap) 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 i; 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i=0; i<8 && !(bitmap &(1<<i)); i++) 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ; 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return i; 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Pull a slot off the free list */ 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC struct NCR_700_command_slot * 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfind_empty_slot(struct NCR_700_Host_Parameters *hostdata) 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = hostdata->free_list; 5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(slot == NULL) { 5151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* sanity check */ 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->command_slot_count != NCR_700_COMMAND_SLOTS_PER_HOST) 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "SLOTS FULL, but count is %d, should be %d\n", hostdata->command_slot_count, NCR_700_COMMAND_SLOTS_PER_HOST); 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(slot->state != NCR_700_SLOT_FREE) 5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* should panic! */ 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "BUSY SLOT ON FREE LIST!!!\n"); 5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->free_list = slot->ITL_forw; 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->ITL_forw = NULL; 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* NOTE: set the state to busy here, not queued, since this 5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * indicates the slot is in use and cannot be run by the IRQ 5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * finish routine. If we cannot queue the command when it 5331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * is properly build, we then change to NCR_700_SLOT_QUEUED */ 5341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->state = NCR_700_SLOT_BUSY; 53567d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley slot->flags = 0; 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->command_slot_count++; 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return slot; 5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfree_slot(struct NCR_700_command_slot *slot, 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata) 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if((slot->state & NCR_700_SLOT_MASK) != NCR_700_SLOT_MAGIC) { 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "53c700: SLOT %p is not MAGIC!!!\n", slot); 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(slot->state == NCR_700_SLOT_FREE) { 5491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "53c700: SLOT %p is FREE!!!\n", slot); 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->resume_offset = 0; 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->cmnd = NULL; 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->state = NCR_700_SLOT_FREE; 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->ITL_forw = hostdata->free_list; 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->free_list = slot; 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->command_slot_count--; 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* This routine really does very little. The command is indexed on 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds the ITL and (if tagged) the ITLQ lists in _queuecommand */ 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldssave_for_reselection(struct NCR_700_Host_Parameters *hostdata, 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp, __u32 dsp) 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Its just possible that this gets executed twice */ 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_command_slot *)SCp->host_scribble; 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->resume_offset = dsp; 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_FREE; 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = NULL; 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC inline void 5791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_unmap(struct NCR_700_Host_Parameters *hostdata, struct scsi_cmnd *SCp, 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot) 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp->sc_data_direction != DMA_NONE && 5833258a4d5690880a62121553b604893ecaca7d042FUJITA Tomonori SCp->sc_data_direction != DMA_BIDIRECTIONAL) 5843258a4d5690880a62121553b604893ecaca7d042FUJITA Tomonori scsi_dma_unmap(SCp); 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC inline void 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_scsi_done(struct NCR_700_Host_Parameters *hostdata, 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp, int result) 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_FREE; 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = NULL; 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_command_slot *)SCp->host_scribble; 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5980f13fc09db68de92585558984bff1c51b87db72fJames Bottomley dma_unmap_single(hostdata->dev, slot->pCmd, 59964a87b244b9297667ca80264aab849a36f494884Boaz Harrosh MAX_COMMAND_SIZE, DMA_TO_DEVICE); 60067d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley if (slot->flags == NCR_700_FLAG_AUTOSENSE) { 6010f13fc09db68de92585558984bff1c51b87db72fJames Bottomley char *cmnd = NCR_700_get_sense_cmnd(SCp->device); 6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(" ORIGINAL CMD %p RETURNED %d, new return is %d sense is\n", 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp, SCp->cmnd[7], result); 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_sense("53c700", SCp); 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 608b80ca4f7ee36c26d300c5a8f429e73372d153379FUJITA Tomonori dma_unmap_single(hostdata->dev, slot->dma_handle, 609b80ca4f7ee36c26d300c5a8f429e73372d153379FUJITA Tomonori SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE); 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* restore the old result if the request sense was 6111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * successful */ 612c603d04ef6826a29f50cb151cb992f256d0cf19dJames Bottomley if (result == 0) 6130f13fc09db68de92585558984bff1c51b87db72fJames Bottomley result = cmnd[7]; 614c603d04ef6826a29f50cb151cb992f256d0cf19dJames Bottomley /* restore the original length */ 615c603d04ef6826a29f50cb151cb992f256d0cf19dJames Bottomley SCp->cmd_len = cmnd[8]; 61667d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley } else 6170f13fc09db68de92585558984bff1c51b87db72fJames Bottomley NCR_700_unmap(hostdata, SCp, slot); 61867d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley 6191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_slot(slot, hostdata); 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(NCR_700_get_depth(SCp->device) == 0 || 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_get_depth(SCp->device) > SCp->device->queue_depth) 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "Invalid depth in NCR_700_scsi_done(): %d\n", 6241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_get_depth(SCp->device)); 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* NCR_700_DEBUG */ 6261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_depth(SCp->device, NCR_700_get_depth(SCp->device) - 1); 6271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->host_scribble = NULL; 6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->result = result; 6301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->scsi_done(SCp); 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "53c700: SCSI DONE HAS NULL SCp\n"); 6331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_internal_bus_reset(struct Scsi_Host *host) 6391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Bus reset */ 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(ASSERT_RST, host, SCNTL1_REG); 6421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(50); 6431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(0, host, SCNTL1_REG); 6441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_chip_setup(struct Scsi_Host *host) 6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 6511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)host->hostdata[0]; 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 min_period; 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 min_xferp = (hostdata->chip710 ? NCR_710_MIN_XFERP : NCR_700_MIN_XFERP); 6541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->chip710) { 656f67a9c1592b3a0292376bdcbdcc34cbe353967a8Thomas Bogendoerfer __u8 burst_disable = 0; 657f67a9c1592b3a0292376bdcbdcc34cbe353967a8Thomas Bogendoerfer __u8 burst_length = 0; 658f67a9c1592b3a0292376bdcbdcc34cbe353967a8Thomas Bogendoerfer 659f67a9c1592b3a0292376bdcbdcc34cbe353967a8Thomas Bogendoerfer switch (hostdata->burst_length) { 660f67a9c1592b3a0292376bdcbdcc34cbe353967a8Thomas Bogendoerfer case 1: 661f67a9c1592b3a0292376bdcbdcc34cbe353967a8Thomas Bogendoerfer burst_length = BURST_LENGTH_1; 662f67a9c1592b3a0292376bdcbdcc34cbe353967a8Thomas Bogendoerfer break; 663f67a9c1592b3a0292376bdcbdcc34cbe353967a8Thomas Bogendoerfer case 2: 664f67a9c1592b3a0292376bdcbdcc34cbe353967a8Thomas Bogendoerfer burst_length = BURST_LENGTH_2; 665f67a9c1592b3a0292376bdcbdcc34cbe353967a8Thomas Bogendoerfer break; 666f67a9c1592b3a0292376bdcbdcc34cbe353967a8Thomas Bogendoerfer case 4: 667f67a9c1592b3a0292376bdcbdcc34cbe353967a8Thomas Bogendoerfer burst_length = BURST_LENGTH_4; 668f67a9c1592b3a0292376bdcbdcc34cbe353967a8Thomas Bogendoerfer break; 669f67a9c1592b3a0292376bdcbdcc34cbe353967a8Thomas Bogendoerfer case 8: 670f67a9c1592b3a0292376bdcbdcc34cbe353967a8Thomas Bogendoerfer burst_length = BURST_LENGTH_8; 671f67a9c1592b3a0292376bdcbdcc34cbe353967a8Thomas Bogendoerfer break; 672f67a9c1592b3a0292376bdcbdcc34cbe353967a8Thomas Bogendoerfer default: 673f67a9c1592b3a0292376bdcbdcc34cbe353967a8Thomas Bogendoerfer burst_disable = BURST_DISABLE; 674f67a9c1592b3a0292376bdcbdcc34cbe353967a8Thomas Bogendoerfer break; 675f67a9c1592b3a0292376bdcbdcc34cbe353967a8Thomas Bogendoerfer } 676632731345bfb87fd1f4dc509928cc4a7efc12a89Kars de Jong hostdata->dcntl_extra |= COMPAT_700_MODE; 6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 678632731345bfb87fd1f4dc509928cc4a7efc12a89Kars de Jong NCR_700_writeb(hostdata->dcntl_extra, host, DCNTL_REG); 679f67a9c1592b3a0292376bdcbdcc34cbe353967a8Thomas Bogendoerfer NCR_700_writeb(burst_length | hostdata->dmode_extra, 6801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host, DMODE_710_REG); 681632731345bfb87fd1f4dc509928cc4a7efc12a89Kars de Jong NCR_700_writeb(burst_disable | hostdata->ctest7_extra | 682632731345bfb87fd1f4dc509928cc4a7efc12a89Kars de Jong (hostdata->differential ? DIFF : 0), 683632731345bfb87fd1f4dc509928cc4a7efc12a89Kars de Jong host, CTEST7_REG); 6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(BTB_TIMER_DISABLE, host, CTEST0_REG); 6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(FULL_ARBITRATION | ENABLE_PARITY | PARITY 6861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | AUTO_ATN, host, SCNTL0_REG); 6871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 6881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(BURST_LENGTH_8 | hostdata->dmode_extra, 6891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host, DMODE_700_REG); 6901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(hostdata->differential ? 6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DIFF : 0, host, CTEST7_REG); 6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->fast) { 6931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* this is for 700-66, does nothing on 700 */ 6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(LAST_DIS_ENBL | ENABLE_ACTIVE_NEGATION 6951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | GENERATE_RECEIVE_PARITY, host, 6961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds CTEST8_REG); 6971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 6981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(FULL_ARBITRATION | ENABLE_PARITY 6991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | PARITY | AUTO_ATN, host, SCNTL0_REG); 7001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(1 << host->this_id, host, SCID_REG); 7041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(0, host, SBCL_REG); 7051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(ASYNC_OPERATION, host, SXFER_REG); 7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(PHASE_MM_INT | SEL_TIMEOUT_INT | GROSS_ERR_INT | UX_DISC_INT 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | RST_INT | PAR_ERR_INT | SELECT_INT, host, SIEN_REG); 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(ABORT_INT | INT_INST_INT | ILGL_INST_INT, host, DIEN_REG); 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(ENABLE_SELECT, host, SCNTL1_REG); 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->clock > 75) { 7131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "53c700: Clock speed %dMHz is too high: 75Mhz is the maximum this chip can be driven at\n", hostdata->clock); 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* do the best we can, but the async clock will be out 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * of spec: sync divider 2, async divider 3 */ 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("53c700: sync 2 async 3\n")); 7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(SYNC_DIV_2_0, host, SBCL_REG); 718632731345bfb87fd1f4dc509928cc4a7efc12a89Kars de Jong NCR_700_writeb(ASYNC_DIV_3_0 | hostdata->dcntl_extra, host, DCNTL_REG); 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->sync_clock = hostdata->clock/2; 7201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(hostdata->clock > 50 && hostdata->clock <= 75) { 7211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* sync divider 1.5, async divider 3 */ 7221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("53c700: sync 1.5 async 3\n")); 7231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(SYNC_DIV_1_5, host, SBCL_REG); 724632731345bfb87fd1f4dc509928cc4a7efc12a89Kars de Jong NCR_700_writeb(ASYNC_DIV_3_0 | hostdata->dcntl_extra, host, DCNTL_REG); 7251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->sync_clock = hostdata->clock*2; 7261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->sync_clock /= 3; 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(hostdata->clock > 37 && hostdata->clock <= 50) { 7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* sync divider 1, async divider 2 */ 7301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("53c700: sync 1 async 2\n")); 7311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(SYNC_DIV_1_0, host, SBCL_REG); 732632731345bfb87fd1f4dc509928cc4a7efc12a89Kars de Jong NCR_700_writeb(ASYNC_DIV_2_0 | hostdata->dcntl_extra, host, DCNTL_REG); 7331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->sync_clock = hostdata->clock; 7341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(hostdata->clock > 25 && hostdata->clock <=37) { 7351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* sync divider 1, async divider 1.5 */ 7361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("53c700: sync 1 async 1.5\n")); 7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(SYNC_DIV_1_0, host, SBCL_REG); 738632731345bfb87fd1f4dc509928cc4a7efc12a89Kars de Jong NCR_700_writeb(ASYNC_DIV_1_5 | hostdata->dcntl_extra, host, DCNTL_REG); 7391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->sync_clock = hostdata->clock; 7401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 7411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("53c700: sync 1 async 1\n")); 7421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(SYNC_DIV_1_0, host, SBCL_REG); 743632731345bfb87fd1f4dc509928cc4a7efc12a89Kars de Jong NCR_700_writeb(ASYNC_DIV_1_0 | hostdata->dcntl_extra, host, DCNTL_REG); 7441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* sync divider 1, async divider 1 */ 7451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->sync_clock = hostdata->clock; 7461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Calculate the actual minimum period that can be supported 7481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * by our synchronous clock speed. See the 710 manual for 7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * exact details of this calculation which is based on a 7501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * setting of the SXFER register */ 7511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds min_period = 1000*(4+min_xferp)/(4*hostdata->sync_clock); 7521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->min_period = NCR_700_MIN_PERIOD; 7531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(min_period > NCR_700_MIN_PERIOD) 7541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->min_period = min_period; 7551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_chip_reset(struct Scsi_Host *host) 7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)host->hostdata[0]; 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->chip710) { 7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(SOFTWARE_RESET_710, host, ISTAT_REG); 7641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(100); 7651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(0, host, ISTAT_REG); 7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 7681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(SOFTWARE_RESET, host, DCNTL_REG); 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(100); 7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(0, host, DCNTL_REG); 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mdelay(1000); 7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_chip_setup(host); 7771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* The heart of the message processing engine is that the instruction 7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * immediately after the INT is the normal case (and so must be CLEAR 7811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ACK). If we want to do something else, we call that routine in 7821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * scripts and set temp to be the normal case + 8 (skipping the CLEAR 7831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ACK) so that the routine returns correctly to resume its activity 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * */ 7851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC __u32 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsprocess_extended_message(struct Scsi_Host *host, 7871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata, 7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp, __u32 dsp, __u32 dsps) 7891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 resume_offset = dsp, temp = dsp + 8; 7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 pun = 0xff, lun = 0xff; 7921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 7941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pun = SCp->device->id; 7951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lun = SCp->device->lun; 7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch(hostdata->msgin[2]) { 7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case A_SDTR_MSG: 8001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL && NCR_700_is_flag_set(SCp->device, NCR_700_DEV_BEGIN_SYNC_NEGOTIATION)) { 8011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_target *starget = SCp->device->sdev_target; 8021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 period = hostdata->msgin[3]; 8031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 offset = hostdata->msgin[4]; 8041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(offset == 0 || period == 0) { 8061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset = 0; 8071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds period = 0; 8081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_offset(starget) = offset; 8111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_period(starget) = period; 8121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(NCR_700_is_flag_set(SCp->device, NCR_700_DEV_PRINT_SYNC_NEGOTIATION)) { 8141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_display_xfer_agreement(starget); 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_clear_flag(SCp->device, NCR_700_DEV_PRINT_SYNC_NEGOTIATION); 8161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_flag(SCp->device, NCR_700_DEV_NEGOTIATED_SYNC); 8191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_clear_flag(SCp->device, NCR_700_DEV_BEGIN_SYNC_NEGOTIATION); 8201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(NCR_700_get_SXFER(SCp->device), 8221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host, SXFER_REG); 8231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 8251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* SDTR message out of the blue, reject it */ 826017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik shost_printk(KERN_WARNING, host, 827017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik "Unexpected SDTR msg\n"); 8281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgout[0] = A_REJECT_MSG; 829d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle dma_cache_sync(hostdata->dev, hostdata->msgout, 1, DMA_TO_DEVICE); 830d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle script_patch_16(hostdata->dev, hostdata->script, 831d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle MessageCount, 1); 8321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* SendMsgOut returns, so set up the return 8331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * address */ 8341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_SendMessageWithATN; 8351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case A_WDTR_MSG: 8391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "scsi%d: (%d:%d), Unsolicited WDTR after CMD, Rejecting\n", 8401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun); 8411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgout[0] = A_REJECT_MSG; 842d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle dma_cache_sync(hostdata->dev, hostdata->msgout, 1, DMA_TO_DEVICE); 843d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle script_patch_16(hostdata->dev, hostdata->script, MessageCount, 844d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle 1); 8451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_SendMessageWithATN; 8461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 8501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "scsi%d (%d:%d): Unexpected message %s: ", 8511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, 8521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_phase[(dsps & 0xf00) >> 8]); 8531abfd370134553f3b47e3e40a0526e05001409c2Matthew Wilcox spi_print_msg(hostdata->msgin); 8541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("\n"); 8551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* just reject it */ 8561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgout[0] = A_REJECT_MSG; 857d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle dma_cache_sync(hostdata->dev, hostdata->msgout, 1, DMA_TO_DEVICE); 858d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle script_patch_16(hostdata->dev, hostdata->script, MessageCount, 859d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle 1); 8601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* SendMsgOut returns, so set up the return 8611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * address */ 8621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_SendMessageWithATN; 8631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writel(temp, host, TEMP_REG); 8651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return resume_offset; 8661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC __u32 8691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsprocess_message(struct Scsi_Host *host, struct NCR_700_Host_Parameters *hostdata, 8701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp, __u32 dsp, __u32 dsps) 8711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* work out where to return to */ 8731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 temp = dsp + 8, resume_offset = dsp; 8741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 pun = 0xff, lun = 0xff; 8751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 8771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pun = SCp->device->id; 8781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lun = SCp->device->lun; 8791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 8821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d (%d:%d): message %s: ", host->host_no, pun, lun, 8831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_phase[(dsps & 0xf00) >> 8]); 8841abfd370134553f3b47e3e40a0526e05001409c2Matthew Wilcox spi_print_msg(hostdata->msgin); 8851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("\n"); 8861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 8871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch(hostdata->msgin[0]) { 8891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case A_EXTENDED_MSG: 8911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = process_extended_message(host, hostdata, SCp, 8921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsp, dsps); 8931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case A_REJECT_MSG: 8961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL && NCR_700_is_flag_set(SCp->device, NCR_700_DEV_BEGIN_SYNC_NEGOTIATION)) { 8971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Rejected our sync negotiation attempt */ 8981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_period(SCp->device->sdev_target) = 8991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_offset(SCp->device->sdev_target) = 0; 9001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_flag(SCp->device, NCR_700_DEV_NEGOTIATED_SYNC); 9011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_clear_flag(SCp->device, NCR_700_DEV_BEGIN_SYNC_NEGOTIATION); 9021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(SCp != NULL && NCR_700_get_tag_neg_state(SCp->device) == NCR_700_DURING_TAG_NEGOTIATION) { 9031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* rejected our first simple tag message */ 904017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik scmd_printk(KERN_WARNING, SCp, 905017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik "Rejected first tag queue attempt, turning off tag queueing\n"); 9061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* we're done negotiating */ 9071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_tag_neg_state(SCp->device, NCR_700_FINISHED_TAG_NEGOTIATION); 908017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik hostdata->tag_negotiated &= ~(1<<scmd_id(SCp)); 9091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->device->tagged_supported = 0; 9101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_deactivate_tcq(SCp->device, host->cmd_per_lun); 9111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 912017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik shost_printk(KERN_WARNING, host, 913017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik "(%d:%d) Unexpected REJECT Message %s\n", 914017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik pun, lun, 9151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_phase[(dsps & 0xf00) >> 8]); 9161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* however, just ignore it */ 9171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case A_PARITY_ERROR_MSG: 9211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d (%d:%d) Parity Error!\n", host->host_no, 9221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pun, lun); 9231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(host); 9241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case A_SIMPLE_TAG_MSG: 9261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "scsi%d (%d:%d) SIMPLE TAG %d %s\n", host->host_no, 9271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pun, lun, hostdata->msgin[1], 9281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_phase[(dsps & 0xf00) >> 8]); 9291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* just ignore it */ 9301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 9321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "scsi%d (%d:%d): Unexpected message %s: ", 9331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, 9341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_phase[(dsps & 0xf00) >> 8]); 9351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9361abfd370134553f3b47e3e40a0526e05001409c2Matthew Wilcox spi_print_msg(hostdata->msgin); 9371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("\n"); 9381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* just reject it */ 9391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgout[0] = A_REJECT_MSG; 940d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle dma_cache_sync(hostdata->dev, hostdata->msgout, 1, DMA_TO_DEVICE); 941d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle script_patch_16(hostdata->dev, hostdata->script, MessageCount, 942d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle 1); 9431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* SendMsgOut returns, so set up the return 9441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * address */ 9451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_SendMessageWithATN; 9461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writel(temp, host, TEMP_REG); 9501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set us up to receive another message */ 951d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle dma_cache_sync(hostdata->dev, hostdata->msgin, MSG_ARRAY_SIZE, DMA_FROM_DEVICE); 9521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return resume_offset; 9531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC __u32 9561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsprocess_script_interrupt(__u32 dsps, __u32 dsp, struct scsi_cmnd *SCp, 9571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *host, 9581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata) 9591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 resume_offset = 0; 9611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 pun = 0xff, lun=0xff; 9621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 9641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pun = SCp->device->id; 9651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lun = SCp->device->lun; 9661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(dsps == A_GOOD_STATUS_AFTER_STATUS) { 9691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG((" COMMAND COMPLETE, status=%02x\n", 9701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->status[0])); 9711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* OK, if TCQ still under negotiation, we now know it works */ 9721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (NCR_700_get_tag_neg_state(SCp->device) == NCR_700_DURING_TAG_NEGOTIATION) 9731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_tag_neg_state(SCp->device, 9741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_FINISHED_TAG_NEGOTIATION); 9751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* check for contingent allegiance contitions */ 9771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(status_byte(hostdata->status[0]) == CHECK_CONDITION || 9781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status_byte(hostdata->status[0]) == COMMAND_TERMINATED) { 9791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = 9801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_command_slot *)SCp->host_scribble; 9810f13fc09db68de92585558984bff1c51b87db72fJames Bottomley if(slot->flags == NCR_700_FLAG_AUTOSENSE) { 9821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* OOPS: bad device, returning another 9831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * contingent allegiance condition */ 984017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik scmd_printk(KERN_ERR, SCp, 985017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik "broken device is looping in contingent allegiance: ignoring\n"); 9861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_scsi_done(hostdata, SCp, hostdata->status[0]); 9871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 9880f13fc09db68de92585558984bff1c51b87db72fJames Bottomley char *cmnd = 9890f13fc09db68de92585558984bff1c51b87db72fJames Bottomley NCR_700_get_sense_cmnd(SCp->device); 9901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_DEBUG 9911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(" cmd %p has status %d, requesting sense\n", 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp, hostdata->status[0]); 9941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 9951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* we can destroy the command here 9961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * because the contingent allegiance 9971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * condition will cause a retry which 9981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * will re-copy the command from the 9991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * saved data_cmnd. We also unmap any 10001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * data associated with the command 10011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * here */ 10021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_unmap(hostdata, SCp, slot); 100367d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley dma_unmap_single(hostdata->dev, slot->pCmd, 100464a87b244b9297667ca80264aab849a36f494884Boaz Harrosh MAX_COMMAND_SIZE, 100567d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley DMA_TO_DEVICE); 100667d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley 10070f13fc09db68de92585558984bff1c51b87db72fJames Bottomley cmnd[0] = REQUEST_SENSE; 10080f13fc09db68de92585558984bff1c51b87db72fJames Bottomley cmnd[1] = (SCp->device->lun & 0x7) << 5; 10090f13fc09db68de92585558984bff1c51b87db72fJames Bottomley cmnd[2] = 0; 10100f13fc09db68de92585558984bff1c51b87db72fJames Bottomley cmnd[3] = 0; 1011b80ca4f7ee36c26d300c5a8f429e73372d153379FUJITA Tomonori cmnd[4] = SCSI_SENSE_BUFFERSIZE; 10120f13fc09db68de92585558984bff1c51b87db72fJames Bottomley cmnd[5] = 0; 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Here's a quiet hack: the 10141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * REQUEST_SENSE command is six bytes, 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * so store a flag indicating that 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this was an internal sense request 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * and the original status at the end 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * of the command */ 10190f13fc09db68de92585558984bff1c51b87db72fJames Bottomley cmnd[6] = NCR_700_INTERNAL_SENSE_MAGIC; 10200f13fc09db68de92585558984bff1c51b87db72fJames Bottomley cmnd[7] = hostdata->status[0]; 1021c603d04ef6826a29f50cb151cb992f256d0cf19dJames Bottomley cmnd[8] = SCp->cmd_len; 1022c603d04ef6826a29f50cb151cb992f256d0cf19dJames Bottomley SCp->cmd_len = 6; /* command length for 1023c603d04ef6826a29f50cb151cb992f256d0cf19dJames Bottomley * REQUEST_SENSE */ 10240f13fc09db68de92585558984bff1c51b87db72fJames Bottomley slot->pCmd = dma_map_single(hostdata->dev, cmnd, MAX_COMMAND_SIZE, DMA_TO_DEVICE); 1025b80ca4f7ee36c26d300c5a8f429e73372d153379FUJITA Tomonori slot->dma_handle = dma_map_single(hostdata->dev, SCp->sense_buffer, SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE); 1026b80ca4f7ee36c26d300c5a8f429e73372d153379FUJITA Tomonori slot->SG[0].ins = bS_to_host(SCRIPT_MOVE_DATA_IN | SCSI_SENSE_BUFFERSIZE); 10271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[0].pAddr = bS_to_host(slot->dma_handle); 10281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[1].ins = bS_to_host(SCRIPT_RETURN); 10291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[1].pAddr = 0; 10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->resume_offset = hostdata->pScript; 1031d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle dma_cache_sync(hostdata->dev, slot->SG, sizeof(slot->SG[0])*2, DMA_TO_DEVICE); 1032b80ca4f7ee36c26d300c5a8f429e73372d153379FUJITA Tomonori dma_cache_sync(hostdata->dev, SCp->sense_buffer, SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE); 1033d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle 10341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* queue the command for reissue */ 10351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->state = NCR_700_SLOT_QUEUED; 103667d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley slot->flags = NCR_700_FLAG_AUTOSENSE; 10371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_FREE; 10381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = NULL; 10391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 10411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // Currently rely on the mid layer evaluation 10421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // of the tag queuing capability 10431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // 10441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds //if(status_byte(hostdata->status[0]) == GOOD && 10451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // SCp->cmnd[0] == INQUIRY && SCp->use_sg == 0) { 10461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // /* Piggy back the tag queueing support 10471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // * on this command */ 10481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // dma_sync_single_for_cpu(hostdata->dev, 10491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // slot->dma_handle, 10501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // SCp->request_bufflen, 10511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // DMA_FROM_DEVICE); 10521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // if(((char *)SCp->request_buffer)[7] & 0x02) { 1053017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik // scmd_printk(KERN_INFO, SCp, 1054017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik // "Enabling Tag Command Queuing\n"); 1055017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik // hostdata->tag_negotiated |= (1<<scmd_id(SCp)); 10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // NCR_700_set_flag(SCp->device, NCR_700_DEV_BEGIN_TAG_QUEUEING); 10571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // } else { 10581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // NCR_700_clear_flag(SCp->device, NCR_700_DEV_BEGIN_TAG_QUEUEING); 1059017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik // hostdata->tag_negotiated &= ~(1<<scmd_id(SCp)); 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // } 10611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds //} 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_scsi_done(hostdata, SCp, hostdata->status[0]); 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if((dsps & 0xfffff0f0) == A_UNEXPECTED_PHASE) { 10651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 i = (dsps & 0xf00) >> 8; 10661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1067017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik scmd_printk(KERN_ERR, SCp, "UNEXPECTED PHASE %s (%s)\n", 10681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_phase[i], 10691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbcl_to_string(NCR_700_readb(host, SBCL_REG))); 1070017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik scmd_printk(KERN_ERR, SCp, " len = %d, cmd =", 1071017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik SCp->cmd_len); 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 10731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(host); 10751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if((dsps & 0xfffff000) == A_FATAL) { 10761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i = (dsps & 0xfff); 10771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) FATAL ERROR: %s\n", 10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, NCR_700_fatal_messages[i]); 10801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(dsps == A_FATAL_ILLEGAL_MSG_LENGTH) { 10811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR " msg begins %02x %02x\n", 10821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgin[0], hostdata->msgin[1]); 10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(host); 10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if((dsps & 0xfffff0f0) == A_DISCONNECT) { 10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 10871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 i = (dsps & 0xf00) >> 8; 10881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d: (%d:%d), DISCONNECTED (%d) %s\n", 10901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, 10911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds i, NCR_700_phase[i]); 10921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 10931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds save_for_reselection(hostdata, SCp, dsp); 10941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(dsps == A_RESELECTION_IDENTIFIED) { 10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 lun; 10971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot; 10981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 reselection_id = hostdata->reselection_id; 10991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_device *SDp; 11001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lun = hostdata->msgin[0] & 0x1f; 11021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->reselection_id = 0xff; 11041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("scsi%d: (%d:%d) RESELECTED!\n", 11051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, reselection_id, lun)); 11061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear the reselection indicator */ 11071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SDp = __scsi_device_lookup(host, 0, reselection_id, lun); 11081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(unlikely(SDp == NULL)) { 11091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) HAS NO device\n", 11101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, reselection_id, lun); 11111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BUG(); 11121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->msgin[1] == A_SIMPLE_TAG_MSG) { 11141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp = scsi_find_tag(SDp, hostdata->msgin[2]); 11151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(unlikely(SCp == NULL)) { 11161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) no saved request for tag %d\n", 11171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, reselection_id, lun, hostdata->msgin[2]); 11181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BUG(); 11191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot = (struct NCR_700_command_slot *)SCp->host_scribble; 1122017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik DDEBUG(KERN_DEBUG, SDp, 1123017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik "reselection is tag %d, slot %p(%d)\n", 1124017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik hostdata->msgin[2], slot, slot->tag); 11251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 11261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp = scsi_find_tag(SDp, SCSI_NO_TAG); 11271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(unlikely(SCp == NULL)) { 1128017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik sdev_printk(KERN_ERR, SDp, 1129017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik "no saved request for untagged cmd\n"); 11301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BUG(); 11311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot = (struct NCR_700_command_slot *)SCp->host_scribble; 11331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(slot == NULL) { 11361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) RESELECTED but no saved command (MSG = %02x %02x %02x)!!\n", 11371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, reselection_id, lun, 11381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgin[0], hostdata->msgin[1], 11391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgin[2]); 11401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 11411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->state != NCR_700_HOST_BUSY) 11421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: FATAL, host not busy during valid reselection!\n", 11431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no); 11441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = slot->resume_offset; 11451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = slot->cmnd; 11461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* re-patch for this command */ 1148d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle script_patch_32_abs(hostdata->dev, hostdata->script, 1149d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle CommandAddress, slot->pCmd); 1150d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle script_patch_16(hostdata->dev, hostdata->script, 11511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds CommandCount, slot->cmnd->cmd_len); 1152d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle script_patch_32_abs(hostdata->dev, hostdata->script, 1153d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle SGScriptStartAddress, 11541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds to32bit(&slot->pSG[0].ins)); 11551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Note: setting SXFER only works if we're 11571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * still in the MESSAGE phase, so it is vital 11581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * that ACK is still asserted when we process 11591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the reselection message. The resume offset 11601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * should therefore always clear ACK */ 11611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(NCR_700_get_SXFER(hostdata->cmd->device), 11621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host, SXFER_REG); 1163d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle dma_cache_sync(hostdata->dev, hostdata->msgin, 11641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MSG_ARRAY_SIZE, DMA_FROM_DEVICE); 1165d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle dma_cache_sync(hostdata->dev, hostdata->msgout, 11661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MSG_ARRAY_SIZE, DMA_TO_DEVICE); 11671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* I'm just being paranoid here, the command should 11681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * already have been flushed from the cache */ 1169d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle dma_cache_sync(hostdata->dev, slot->cmnd->cmnd, 11701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->cmnd->cmd_len, DMA_TO_DEVICE); 11711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(dsps == A_RESELECTED_DURING_SELECTION) { 11761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* This section is full of debugging code because I've 11781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * never managed to reach it. I think what happens is 11791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * that, because the 700 runs with selection 11801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * interrupts enabled the whole time that we take a 11811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * selection interrupt before we manage to get to the 11821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * reselected script interrupt */ 11831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 reselection_id = NCR_700_readb(host, SFBR_REG); 11851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot; 11861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Take out our own ID */ 11881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds reselection_id &= ~(1<<host->this_id); 11891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* I've never seen this happen, so keep this as a printk rather 11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * than a debug */ 11921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "scsi%d: (%d:%d) RESELECTION DURING SELECTION, dsp=%08x[%04x] state=%d, count=%d\n", 11931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, reselection_id, lun, dsp, dsp - hostdata->pScript, hostdata->state, hostdata->command_slot_count); 11941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 11961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME: DEBUGGING CODE */ 11971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 SG = (__u32)bS_to_cpu(hostdata->script[A_SGScriptStartAddress_used[0]]); 11981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 11991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i=0; i< NCR_700_COMMAND_SLOTS_PER_HOST; i++) { 12011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SG >= to32bit(&hostdata->slots[i].pSG[0]) 12021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && SG <= to32bit(&hostdata->slots[i].pSG[NCR_700_SG_SEGMENTS])) 12031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 12041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus 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); 12061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp = hostdata->slots[i].cmnd; 12071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 12101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot = (struct NCR_700_command_slot *)SCp->host_scribble; 12111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* change slot from busy to queued to redo command */ 12121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->state = NCR_700_SLOT_QUEUED; 12131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = NULL; 12151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(reselection_id == 0) { 12171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->reselection_id == 0xff) { 12181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: Invalid reselection during selection!!\n", host->host_no); 12191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 12201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 12211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: script reselected and we took a selection interrupt\n", 12221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no); 12231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds reselection_id = hostdata->reselection_id; 12241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 12261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* convert to real ID */ 12281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds reselection_id = bitmap_to_number(reselection_id); 12291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->reselection_id = reselection_id; 12311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* just in case we have a stale simple tag message, clear it */ 12321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgin[1] = 0; 1233d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle dma_cache_sync(hostdata->dev, hostdata->msgin, 12341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MSG_ARRAY_SIZE, DMA_BIDIRECTIONAL); 12351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->tag_negotiated & (1<<reselection_id)) { 12361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_GetReselectionWithTag; 12371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 12381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_GetReselectionData; 12391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(dsps == A_COMPLETED_SELECTION_AS_TARGET) { 12411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* we've just disconnected from the bus, do nothing since 12421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * a return here will re-run the queued command slot 12431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * that may have been interrupted by the initial selection */ 12441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG((" SELECTION COMPLETED\n")); 12451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if((dsps & 0xfffff0f0) == A_MSG_IN) { 12461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = process_message(host, hostdata, SCp, 12471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsp, dsps); 12481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if((dsps & 0xfffff000) == 0) { 12491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 i = (dsps & 0xf0) >> 4, j = (dsps & 0xf00) >> 8; 12501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d), unhandled script condition %s %s at %04x\n", 12511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, NCR_700_condition[i], 12521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_phase[j], dsp - hostdata->pScript); 12531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 12543258a4d5690880a62121553b604893ecaca7d042FUJITA Tomonori struct scatterlist *sg; 12551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12563258a4d5690880a62121553b604893ecaca7d042FUJITA Tomonori scsi_print_command(SCp); 12573258a4d5690880a62121553b604893ecaca7d042FUJITA Tomonori scsi_for_each_sg(SCp, sg, scsi_sg_count(SCp) + 1, i) { 12583258a4d5690880a62121553b604893ecaca7d042FUJITA Tomonori printk(KERN_INFO " SG[%d].length = %d, move_insn=%08x, addr %08x\n", i, sg->length, ((struct NCR_700_command_slot *)SCp->host_scribble)->SG[i].ins, ((struct NCR_700_command_slot *)SCp->host_scribble)->SG[i].pAddr); 12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12603258a4d5690880a62121553b604893ecaca7d042FUJITA Tomonori } 12611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(host); 12621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if((dsps & 0xfffff000) == A_DEBUG_INTERRUPT) { 12631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_NOTICE "scsi%d (%d:%d) DEBUG INTERRUPT %d AT %08x[%04x], continuing\n", 12641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, dsps & 0xfff, dsp, dsp - hostdata->pScript); 12651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = dsp; 12661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 12671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d), unidentified script interrupt 0x%x at %04x\n", 12681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, dsps, dsp - hostdata->pScript); 12691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(host); 12701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return resume_offset; 12721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* We run the 53c700 with selection interrupts always enabled. This 12751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * means that the chip may be selected as soon as the bus frees. On a 12761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * busy bus, this can be before the scripts engine finishes its 12771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * processing. Therefore, part of the selection processing has to be 12781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to find out what the scripts engine is doing and complete the 12791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * function if necessary (i.e. process the pending disconnect or save 12801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the interrupted initial selection */ 12811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC inline __u32 12821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsprocess_selection(struct Scsi_Host *host, __u32 dsp) 12831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 id = 0; /* Squash compiler warning */ 12851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int count = 0; 12861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 resume_offset = 0; 12871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 12881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)host->hostdata[0]; 12891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp = hostdata->cmd; 12901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 sbcl; 12911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(count = 0; count < 5; count++) { 12931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id = NCR_700_readb(host, hostdata->chip710 ? 12941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds CTEST9_REG : SFBR_REG); 12951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Take out our own ID */ 12971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id &= ~(1<<host->this_id); 12981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(id != 0) 12991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(5); 13011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbcl = NCR_700_readb(host, SBCL_REG); 13031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if((sbcl & SBCL_IO) == 0) { 13041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* mark as having been selected rather than reselected */ 13051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds id = 0xff; 13061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 13071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* convert to real ID */ 13081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->reselection_id = id = bitmap_to_number(id); 13091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("scsi%d: Reselected by %d\n", 13101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, id)); 13111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->state == NCR_700_HOST_BUSY && SCp != NULL) { 13131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = 13141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_command_slot *)SCp->host_scribble; 13151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus 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)); 13161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch(dsp - hostdata->pScript) { 13181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect1: 13191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect2: 13201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds save_for_reselection(hostdata, SCp, Ent_Disconnect2 + hostdata->pScript); 13211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect3: 13231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect4: 13241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds save_for_reselection(hostdata, SCp, Ent_Disconnect4 + hostdata->pScript); 13251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect5: 13271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect6: 13281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds save_for_reselection(hostdata, SCp, Ent_Disconnect6 + hostdata->pScript); 13291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect7: 13311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Disconnect8: 13321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds save_for_reselection(hostdata, SCp, Ent_Disconnect8 + hostdata->pScript); 13331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Finish1: 13351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case Ent_Finish2: 13361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds process_script_interrupt(A_GOOD_STATUS_AFTER_STATUS, dsp, SCp, host, hostdata); 13371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 13401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->state = NCR_700_SLOT_QUEUED; 13411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_BUSY; 13451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = NULL; 13461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear any stale simple tag message */ 13471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->msgin[1] = 0; 1348d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle dma_cache_sync(hostdata->dev, hostdata->msgin, MSG_ARRAY_SIZE, 13491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DMA_BIDIRECTIONAL); 13501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(id == 0xff) { 13521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Selected as target, Ignore */ 13531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_SelectedAsTarget; 13541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(hostdata->tag_negotiated & (1<<id)) { 13551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_GetReselectionWithTag; 13561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 13571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_GetReselectionData; 13581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return resume_offset; 13601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void 13631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_clear_fifo(struct Scsi_Host *host) { 13641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const struct NCR_700_Host_Parameters *hostdata 13651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds = (struct NCR_700_Host_Parameters *)host->hostdata[0]; 13661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->chip710) { 13671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(CLR_FIFO_710, host, CTEST8_REG); 13681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 13691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(CLR_FIFO, host, DFIFO_REG); 13701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void 13741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_flush_fifo(struct Scsi_Host *host) { 13751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const struct NCR_700_Host_Parameters *hostdata 13761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds = (struct NCR_700_Host_Parameters *)host->hostdata[0]; 13771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->chip710) { 13781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(FLUSH_DMA_FIFO_710, host, CTEST8_REG); 13791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(10); 13801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(0, host, CTEST8_REG); 13811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 13821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(FLUSH_DMA_FIFO, host, DFIFO_REG); 13831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(10); 13841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(0, host, DFIFO_REG); 13851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* The queue lock with interrupts disabled must be held on entry to 13901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this function */ 13911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int 13921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_start_command(struct scsi_cmnd *SCp) 13931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = 13951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_command_slot *)SCp->host_scribble; 13961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 13971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SCp->device->host->hostdata[0]; 13981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u16 count = 1; /* for IDENTIFY message */ 13991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->state != NCR_700_HOST_FREE) { 14011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* keep this inside the lock to close the race window where 14021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the running command finishes on another CPU while we don't 14031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * change the state to queued on this one */ 14041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->state = NCR_700_SLOT_QUEUED; 14051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("scsi%d: host busy, queueing command %p, slot %p\n", 14071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->device->host->host_no, slot->cmnd, slot)); 14081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 14091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_BUSY; 14111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = SCp; 14121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->state = NCR_700_SLOT_BUSY; 14131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* keep interrupts disabled until we have the command correctly 14141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * set up so we cannot take a selection interrupt */ 14151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 141667d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley hostdata->msgout[0] = NCR_700_identify((SCp->cmnd[0] != REQUEST_SENSE && 141767d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley slot->flags != NCR_700_FLAG_AUTOSENSE), 14181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->device->lun); 14191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* for INQUIRY or REQUEST_SENSE commands, we cannot be sure 14201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * if the negotiated transfer parameters still hold, so 14211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * always renegotiate them */ 142267d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley if(SCp->cmnd[0] == INQUIRY || SCp->cmnd[0] == REQUEST_SENSE || 142367d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley slot->flags == NCR_700_FLAG_AUTOSENSE) { 14241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_clear_flag(SCp->device, NCR_700_DEV_NEGOTIATED_SYNC); 14251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* REQUEST_SENSE is asking for contingent I_T_L(_Q) status. 14281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If a contingent allegiance condition exists, the device 14291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * will refuse all tags, so send the request sense as untagged 14301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * */ 1431422c0d61d591cbfb70f029e13505fb437e169d68Jeff Garzik if((hostdata->tag_negotiated & (1<<scmd_id(SCp))) 143267d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley && (slot->tag != SCSI_NO_TAG && SCp->cmnd[0] != REQUEST_SENSE && 143367d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley slot->flags != NCR_700_FLAG_AUTOSENSE)) { 14341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count += scsi_populate_tag_msg(SCp, &hostdata->msgout[count]); 14351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->fast && 14381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_is_flag_clear(SCp->device, NCR_700_DEV_NEGOTIATED_SYNC)) { 14396ea3c0b2dac0d6a857d6bc010e544f4c901fff78Matthew Wilcox count += spi_populate_sync_msg(&hostdata->msgout[count], 14406ea3c0b2dac0d6a857d6bc010e544f4c901fff78Matthew Wilcox spi_period(SCp->device->sdev_target), 14416ea3c0b2dac0d6a857d6bc010e544f4c901fff78Matthew Wilcox spi_offset(SCp->device->sdev_target)); 14421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_flag(SCp->device, NCR_700_DEV_BEGIN_SYNC_NEGOTIATION); 14431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1445d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle script_patch_16(hostdata->dev, hostdata->script, MessageCount, count); 14461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1448d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle script_patch_ID(hostdata->dev, hostdata->script, 1449422c0d61d591cbfb70f029e13505fb437e169d68Jeff Garzik Device_ID, 1<<scmd_id(SCp)); 14501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1451d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle script_patch_32_abs(hostdata->dev, hostdata->script, CommandAddress, 14521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->pCmd); 1453d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle script_patch_16(hostdata->dev, hostdata->script, CommandCount, 1454d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle SCp->cmd_len); 14551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* finally plumb the beginning of the SG list into the script 14561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * */ 1457d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle script_patch_32_abs(hostdata->dev, hostdata->script, 1458d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle SGScriptStartAddress, to32bit(&slot->pSG[0].ins)); 14591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_clear_fifo(SCp->device->host); 14601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(slot->resume_offset == 0) 14621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->resume_offset = hostdata->pScript; 14631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* now perform all the writebacks and invalidates */ 1464d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle dma_cache_sync(hostdata->dev, hostdata->msgout, count, DMA_TO_DEVICE); 1465d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle dma_cache_sync(hostdata->dev, hostdata->msgin, MSG_ARRAY_SIZE, 14661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DMA_FROM_DEVICE); 1467d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle dma_cache_sync(hostdata->dev, SCp->cmnd, SCp->cmd_len, DMA_TO_DEVICE); 1468d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle dma_cache_sync(hostdata->dev, hostdata->status, 1, DMA_FROM_DEVICE); 14691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set the synchronous period/offset */ 14711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writeb(NCR_700_get_SXFER(SCp->device), 14721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->device->host, SXFER_REG); 14731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writel(slot->temp, SCp->device->host, TEMP_REG); 14741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writel(slot->resume_offset, SCp->device->host, DSP_REG); 14751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 14771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsirqreturn_t 14807d12e780e003f93433d49ce78cfedf4b4c52adc5David HowellsNCR_700_intr(int irq, void *dev_id) 14811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *host = (struct Scsi_Host *)dev_id; 14831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 14841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)host->hostdata[0]; 14851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 istat; 14861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 resume_offset = 0; 14871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 pun = 0xff, lun = 0xff; 14881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 14891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int handled = 0; 14901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1491af901ca181d92aac3a7dc265144a9081a86d8f39André Goddard Rosa /* Use the host lock to serialise access to the 53c700 14921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * hardware. Note: In future, we may need to take the queue 14931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * lock to enter the done routines. When that happens, we 14941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * need to ensure that for this driver, the host lock and the 14951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * queue lock point to the same thing. */ 14961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(host->host_lock, flags); 14971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if((istat = NCR_700_readb(host, ISTAT_REG)) 14981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds & (SCSI_INT_PENDING | DMA_INT_PENDING)) { 14991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 dsps; 15001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 sstat0 = 0, dstat = 0; 15011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 dsp; 15021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp = hostdata->cmd; 15031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enum NCR_700_Host_State state; 15041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds handled = 1; 15061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds state = hostdata->state; 15071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp = hostdata->cmd; 15081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(istat & SCSI_INT_PENDING) { 15101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(10); 15111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sstat0 = NCR_700_readb(host, SSTAT0_REG); 15131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(istat & DMA_INT_PENDING) { 15161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds udelay(10); 15171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dstat = NCR_700_readb(host, DSTAT_REG); 15191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsps = NCR_700_readl(host, DSPS_REG); 15221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsp = NCR_700_readl(host, DSP_REG); 15231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("scsi%d: istat %02x sstat0 %02x dstat %02x dsp %04x[%08x] dsps 0x%x\n", 15251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, istat, sstat0, dstat, 15261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (dsp - (__u32)(hostdata->pScript))/4, 15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsp, dsps)); 15281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp != NULL) { 15301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pun = SCp->device->id; 15311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lun = SCp->device->lun; 15321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(sstat0 & SCSI_RESET_DETECTED) { 15351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_device *SDp; 15361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 15371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_BUSY; 15391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: Bus Reset detected, executing command %p, slot %p, dsp %08x[%04x]\n", 15411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, SCp, SCp == NULL ? NULL : SCp->host_scribble, dsp, dsp - hostdata->pScript); 15421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_report_bus_reset(host, 0); 15441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear all the negotiated parameters */ 15461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __shost_for_each_device(SDp, host) 15470f13fc09db68de92585558984bff1c51b87db72fJames Bottomley NCR_700_clear_flag(SDp, ~0); 15481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear all the slots and their pending commands */ 15501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i = 0; i < NCR_700_COMMAND_SLOTS_PER_HOST; i++) { 15511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_cmnd *SCp; 15521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = 15531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &hostdata->slots[i]; 15541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(slot->state == NCR_700_SLOT_FREE) 15561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 15571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp = slot->cmnd; 15591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR " failing command because of reset, slot %p, cmnd %p\n", 15601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot, SCp); 15611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_slot(slot, hostdata); 15621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->host_scribble = NULL; 15631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_depth(SCp->device, 0); 15641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* NOTE: deadlock potential here: we 15651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * rely on mid-layer guarantees that 15661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * scsi_done won't try to issue the 15671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * command again otherwise we'll 15681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * deadlock on the 15691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * hostdata->state_lock */ 15701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->result = DID_RESET << 16; 15711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->scsi_done(SCp); 15721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mdelay(25); 15741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_chip_setup(host); 15751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_FREE; 15771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->cmd = NULL; 15781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* signal back if this was an eh induced reset */ 15791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->eh_complete != NULL) 15801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds complete(hostdata->eh_complete); 15811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_unlock; 15821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(sstat0 & SELECTION_TIMEOUT) { 15831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("scsi%d: (%d:%d) selection timeout\n", 15841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun)); 15851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_scsi_done(hostdata, SCp, DID_NO_CONNECT<<16); 15861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(sstat0 & PHASE_MISMATCH) { 15871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot = (SCp == NULL) ? NULL : 15881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_command_slot *)SCp->host_scribble; 15891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(dsp == Ent_SendMessage + 8 + hostdata->pScript) { 15911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* It wants to reply to some part of 15921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * our message */ 15931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 15941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 temp = NCR_700_readl(host, TEMP_REG); 15951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int count = (hostdata->script[Ent_SendMessage/4] & 0xffffff) - ((NCR_700_readl(host, DBC_REG) & 0xffffff) + NCR_700_data_residual(host)); 15961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus 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))); 15971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 15981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_SendMessagePhaseMismatch; 15991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(dsp >= to32bit(&slot->pSG[0].ins) && 16001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsp <= to32bit(&slot->pSG[NCR_700_SG_SEGMENTS].ins)) { 16011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int data_transfer = NCR_700_readl(host, DBC_REG) & 0xffffff; 16021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int SGcount = (dsp - to32bit(&slot->pSG[0].ins))/sizeof(struct NCR_700_SG_List); 16031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int residual = NCR_700_data_residual(host); 16041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 16051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 16061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 naddr = NCR_700_readl(host, DNAD_REG); 16071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d: (%d:%d) Expected phase mismatch in slot->SG[%d], transferred 0x%x\n", 16091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, 16101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SGcount, data_transfer); 16111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 16121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(residual) { 16131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("scsi%d: (%d:%d) Expected phase mismatch in slot->SG[%d], transferred 0x%x, residual %d\n", 16141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, 16151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SGcount, data_transfer, residual); 16161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 16181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data_transfer += residual; 16191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(data_transfer != 0) { 16211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int count; 16221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 pAddr; 16231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SGcount--; 16251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count = (bS_to_cpu(slot->SG[SGcount].ins) & 0x00ffffff); 16271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("DATA TRANSFER MISMATCH, count = %d, transferred %d\n", count, count-data_transfer)); 16281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[SGcount].ins &= bS_to_host(0xff000000); 16291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[SGcount].ins |= bS_to_host(data_transfer); 16301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pAddr = bS_to_cpu(slot->SG[SGcount].pAddr); 16311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pAddr += (count - data_transfer); 16321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 16331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(pAddr != naddr) { 16341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus 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); 16351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 16371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[SGcount].pAddr = bS_to_host(pAddr); 16381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set the executed moves to nops */ 16401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i=0; i<SGcount; i++) { 16411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[i].ins = bS_to_host(SCRIPT_NOP); 16421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[i].pAddr = 0; 16431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1644d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle dma_cache_sync(hostdata->dev, slot->SG, sizeof(slot->SG), DMA_TO_DEVICE); 16451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* and pretend we disconnected after 16461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the command phase */ 16471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = hostdata->pScript + Ent_MsgInDuringData; 16481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* make sure all the data is flushed */ 16491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_flush_fifo(host); 16501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 16511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 sbcl = NCR_700_readb(host, SBCL_REG); 16521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) phase mismatch at %04x, phase %s\n", 16531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, dsp - hostdata->pScript, sbcl_to_string(sbcl)); 16541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(host); 16551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(sstat0 & SCSI_GROSS_ERROR) { 16581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) GROSS ERROR\n", 16591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun); 16601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_scsi_done(hostdata, SCp, DID_ERROR<<16); 16611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(sstat0 & PARITY_ERROR) { 16621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) PARITY ERROR\n", 16631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun); 16641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_scsi_done(hostdata, SCp, DID_ERROR<<16); 16651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(dstat & SCRIPT_INT_RECEIVED) { 16661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("scsi%d: (%d:%d) ====>SCRIPT INTERRUPT<====\n", 16671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun)); 16681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = process_script_interrupt(dsps, dsp, SCp, host, hostdata); 16691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(dstat & (ILGL_INST_DETECTED)) { 16701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) Illegal Instruction detected at 0x%08x[0x%x]!!!\n" 16711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds " Please email James.Bottomley@HansenPartnership.com with the details\n", 16721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, 16731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dsp, dsp - hostdata->pScript); 16741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_scsi_done(hostdata, SCp, DID_ERROR<<16); 16751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if(dstat & (WATCH_DOG_INTERRUPT|ABORTED)) { 16761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: (%d:%d) serious DMA problem, dstat=%02x\n", 16771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, pun, lun, dstat); 16781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_scsi_done(hostdata, SCp, DID_ERROR<<16); 16791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* NOTE: selection interrupt processing MUST occur 16831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * after script interrupt processing to correctly cope 16841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * with the case where we process a disconnect and 16851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * then get reselected before we process the 16861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * disconnection */ 16871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(sstat0 & SELECTED) { 16881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME: It currently takes at least FOUR 16891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * interrupts to complete a command that 16901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * disconnects: one for the disconnect, one 16911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for the reselection, one to get the 16921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * reselection data and one to complete the 16931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * command. If we guess the reselected 16941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * command here and prepare it, we only need 16951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to get a reselection data interrupt if we 16961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * guessed wrongly. Since the interrupt 16971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * overhead is much greater than the command 16981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * setup, this would be an efficient 16991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * optimisation particularly as we probably 17001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * only have one outstanding command on a 17011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * target most of the time */ 17021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds resume_offset = process_selection(host, dsp); 17041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(resume_offset) { 17101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->state != NCR_700_HOST_BUSY) { 17111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "scsi%d: Driver error: resume at 0x%08x [0x%04x] with non busy host!\n", 17121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, resume_offset, resume_offset - hostdata->pScript); 17131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->state = NCR_700_HOST_BUSY; 17141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("Attempting to resume at %x\n", resume_offset)); 17171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_clear_fifo(host); 17181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_writel(resume_offset, host, DSP_REG); 17191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* There is probably a technical no-no about this: If we're a 17211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * shared interrupt and we got this interrupt because the 17221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * other device needs servicing not us, we're still going to 17231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * check our queued commands here---of course, there shouldn't 17241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * be any outstanding.... */ 17251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->state == NCR_700_HOST_FREE) { 17261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 17271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for(i = 0; i < NCR_700_COMMAND_SLOTS_PER_HOST; i++) { 17291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* fairness: always run the queue from the last 17301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * position we left off */ 17311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int j = (i + hostdata->saved_slot_position) 17321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds % NCR_700_COMMAND_SLOTS_PER_HOST; 17331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->slots[j].state != NCR_700_SLOT_QUEUED) 17351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 17361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(NCR_700_start_command(hostdata->slots[j].cmnd)) { 17371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG(("scsi%d: Issuing saved command slot %p, cmd %p\t\n", 17381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host->host_no, &hostdata->slots[j], 17391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->slots[j].cmnd)); 17401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->saved_slot_position = j + 1; 17411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 17441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds out_unlock: 17471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(host->host_lock, flags); 17481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return IRQ_RETVAL(handled); 17491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1751f281233d3eba15fb225d21ae2e228fd4553d824aJeff Garzikstatic int 1752f281233d3eba15fb225d21ae2e228fd4553d824aJeff GarzikNCR_700_queuecommand_lck(struct scsi_cmnd *SCp, void (*done)(struct scsi_cmnd *)) 17531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 17551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SCp->device->host->hostdata[0]; 17561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 move_ins; 17571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enum dma_data_direction direction; 17581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot; 17591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->command_slot_count >= NCR_700_COMMAND_SLOTS_PER_HOST) { 17611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* We're over our allocation, this should never happen 17621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * since we report the max allocation to the mid layer */ 17631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "scsi%d: Command depth has gone over queue depth\n", SCp->device->host->host_no); 17641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 17651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* check for untagged commands. We cannot have any outstanding 17671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * commands if we accept them. Commands could be untagged because: 17681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 17691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - The tag negotiated bitmap is clear 17701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - The blk layer sent and untagged command 17711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 17721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(NCR_700_get_depth(SCp->device) != 0 1773017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik && (!(hostdata->tag_negotiated & (1<<scmd_id(SCp))) 17741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || !blk_rq_tagged(SCp->request))) { 1775017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik CDEBUG(KERN_ERR, SCp, "has non zero depth %d\n", 1776017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik NCR_700_get_depth(SCp->device)); 17771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return SCSI_MLQUEUE_DEVICE_BUSY; 17781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(NCR_700_get_depth(SCp->device) >= SCp->device->queue_depth) { 1780017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik CDEBUG(KERN_ERR, SCp, "has max tag depth %d\n", 1781017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik NCR_700_get_depth(SCp->device)); 17821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return SCSI_MLQUEUE_DEVICE_BUSY; 17831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_depth(SCp->device, NCR_700_get_depth(SCp->device) + 1); 17851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* begin the command here */ 17871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* no need to check for NULL, test for command_slot_count above 17881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ensures a slot is free */ 17891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot = find_empty_slot(hostdata); 17901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->cmnd = SCp; 17921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->scsi_done = done; 17941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->host_scribble = (unsigned char *)slot; 17951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->SCp.ptr = NULL; 17961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->SCp.buffer = NULL; 17971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 17991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("53c700: scsi%d, command ", SCp->device->host->host_no); 18001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 18011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 18021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(blk_rq_tagged(SCp->request) 1803017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik && (hostdata->tag_negotiated &(1<<scmd_id(SCp))) == 0 18041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && NCR_700_get_tag_neg_state(SCp->device) == NCR_700_START_TAG_NEGOTIATION) { 1805017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik scmd_printk(KERN_ERR, SCp, "Enabling Tag Command Queuing\n"); 1806017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik hostdata->tag_negotiated |= (1<<scmd_id(SCp)); 18071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_tag_neg_state(SCp->device, NCR_700_DURING_TAG_NEGOTIATION); 18081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* here we may have to process an untagged command. The gate 18111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * above ensures that this will be the only one outstanding, 18121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * so clear the tag negotiated bit. 18131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FIXME: This will royally screw up on multiple LUN devices 18151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * */ 18161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(!blk_rq_tagged(SCp->request) 1817017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik && (hostdata->tag_negotiated &(1<<scmd_id(SCp)))) { 1818017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik scmd_printk(KERN_INFO, SCp, "Disabling Tag Command Queuing\n"); 1819017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik hostdata->tag_negotiated &= ~(1<<scmd_id(SCp)); 18201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1822017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik if((hostdata->tag_negotiated &(1<<scmd_id(SCp))) 18231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && scsi_get_tag_type(SCp->device)) { 18241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->tag = SCp->request->tag; 1825017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik CDEBUG(KERN_DEBUG, SCp, "sending out tag %d, slot %p\n", 1826017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik slot->tag, slot); 18271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 18281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->tag = SCSI_NO_TAG; 18291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* must populate current_cmnd for scsi_find_tag to work */ 18301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->device->current_cmnd = SCp; 18311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* sanity check: some of the commands generated by the mid-layer 18331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * have an eccentric idea of their sc_data_direction */ 18343258a4d5690880a62121553b604893ecaca7d042FUJITA Tomonori if(!scsi_sg_count(SCp) && !scsi_bufflen(SCp) && 18353258a4d5690880a62121553b604893ecaca7d042FUJITA Tomonori SCp->sc_data_direction != DMA_NONE) { 18361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef NCR_700_DEBUG 18371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("53c700: Command"); 18381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 18391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("Has wrong data direction %d\n", SCp->sc_data_direction); 18401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 18411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->sc_data_direction = DMA_NONE; 18421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (SCp->cmnd[0]) { 18451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case REQUEST_SENSE: 18461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* clear the internal sense magic */ 18471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SCp->cmnd[6] = 0; 18481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* fall through */ 18491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 18501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* OK, get it from the command */ 18511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch(SCp->sc_data_direction) { 18521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case DMA_BIDIRECTIONAL: 18531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 18541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "53c700: Unknown command for data direction "); 18551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 18561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds move_ins = 0; 18581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 18591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case DMA_NONE: 18601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds move_ins = 0; 18611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 18621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case DMA_FROM_DEVICE: 18631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds move_ins = SCRIPT_MOVE_DATA_IN; 18641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 18651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case DMA_TO_DEVICE: 18661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds move_ins = SCRIPT_MOVE_DATA_OUT; 18671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 18681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* now build the scatter gather list */ 18721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds direction = SCp->sc_data_direction; 18731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(move_ins != 0) { 18741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 18751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int sg_count; 18761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_addr_t vPtr = 0; 18773258a4d5690880a62121553b604893ecaca7d042FUJITA Tomonori struct scatterlist *sg; 18781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 count = 0; 18791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18803258a4d5690880a62121553b604893ecaca7d042FUJITA Tomonori sg_count = scsi_dma_map(SCp); 18813258a4d5690880a62121553b604893ecaca7d042FUJITA Tomonori BUG_ON(sg_count < 0); 18821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18833258a4d5690880a62121553b604893ecaca7d042FUJITA Tomonori scsi_for_each_sg(SCp, sg, sg_count, i) { 18843258a4d5690880a62121553b604893ecaca7d042FUJITA Tomonori vPtr = sg_dma_address(sg); 18853258a4d5690880a62121553b604893ecaca7d042FUJITA Tomonori count = sg_dma_len(sg); 18861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[i].ins = bS_to_host(move_ins | count); 18881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG((" scatter block %d: move %d[%08x] from 0x%lx\n", 18891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds i, count, slot->SG[i].ins, (unsigned long)vPtr)); 18901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[i].pAddr = bS_to_host(vPtr); 18911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[i].ins = bS_to_host(SCRIPT_RETURN); 18931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[i].pAddr = 0; 1894d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle dma_cache_sync(hostdata->dev, slot->SG, sizeof(slot->SG), DMA_TO_DEVICE); 18951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEBUG((" SETTING %08lx to %x\n", 1896d3fa72e4556ec1f04e46a0d561d9e785ecaa173dRalf Baechle (&slot->pSG[i].ins), 18971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->SG[i].ins)); 18981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->resume_offset = 0; 19001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot->pCmd = dma_map_single(hostdata->dev, SCp->cmnd, 190164a87b244b9297667ca80264aab849a36f494884Boaz Harrosh MAX_COMMAND_SIZE, DMA_TO_DEVICE); 19021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_start_command(SCp); 19031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 19041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1906f281233d3eba15fb225d21ae2e228fd4553d824aJeff GarzikSTATIC DEF_SCSI_QCMD(NCR_700_queuecommand) 1907f281233d3eba15fb225d21ae2e228fd4553d824aJeff Garzik 19081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int 19091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_abort(struct scsi_cmnd * SCp) 19101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_command_slot *slot; 19121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1913017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik scmd_printk(KERN_INFO, SCp, 1914017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik "New error handler wants to abort command\n\t"); 19151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 19161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds slot = (struct NCR_700_command_slot *)SCp->host_scribble; 19181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(slot == NULL) 19201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* no outstanding command to abort */ 19211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return SUCCESS; 19221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SCp->cmnd[0] == TEST_UNIT_READY) { 19231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME: This is because of a problem in the new 19241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * error handler. When it is in error recovery, it 19251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * will send a TUR to a device it thinks may still be 19261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * showing a problem. If the TUR isn't responded to, 19271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it will abort it and mark the device off line. 19281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Unfortunately, it does no other error recovery, so 19291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this would leave us with an outstanding command 19301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * occupying a slot. Rather than allow this to 19311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * happen, we issue a bus reset to force all 19321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * outstanding commands to terminate here. */ 19331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(SCp->device->host); 19341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* still drop through and return failed */ 19351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return FAILED; 19371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int 19411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_bus_reset(struct scsi_cmnd * SCp) 19421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19436e9a4738c9fadb7cbdcabc1e3b415159f3741ed9Peter Zijlstra DECLARE_COMPLETION_ONSTACK(complete); 19441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 19451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SCp->device->host->hostdata[0]; 19461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1947017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik scmd_printk(KERN_INFO, SCp, 1948017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik "New error handler wants BUS reset, cmd %p\n\t", SCp); 19491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 195068b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik 19511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* In theory, eh_complete should always be null because the 19521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * eh is single threaded, but just in case we're handling a 19531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * reset via sg or something */ 195468b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik spin_lock_irq(SCp->device->host->host_lock); 195568b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik while (hostdata->eh_complete != NULL) { 19561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irq(SCp->device->host->host_lock); 19571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msleep_interruptible(100); 19581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irq(SCp->device->host->host_lock); 19591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 196068b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik 19611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->eh_complete = &complete; 19621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(SCp->device->host); 196368b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik 19641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irq(SCp->device->host->host_lock); 19651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_for_completion(&complete); 19661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irq(SCp->device->host->host_lock); 196768b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik 19681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hostdata->eh_complete = NULL; 19691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Revalidate the transport parameters of the failing device */ 19701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->fast) 19711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_schedule_dv_device(SCp->device); 197268b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik 197368b3aa7c9805aee9005a8ca53c5e99177961fbb9Jeff Garzik spin_unlock_irq(SCp->device->host->host_lock); 19741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return SUCCESS; 19751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int 19781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_host_reset(struct scsi_cmnd * SCp) 19791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1980017560fca496f72ed9dd734ffde63ce39dfe0411Jeff Garzik scmd_printk(KERN_INFO, SCp, "New error handler wants HOST reset\n\t"); 19811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_print_command(SCp); 19821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1983df0ae2497ddefd72a87f3a3b34ff32455d7d4ae0Jeff Garzik spin_lock_irq(SCp->device->host->host_lock); 1984df0ae2497ddefd72a87f3a3b34ff32455d7d4ae0Jeff Garzik 19851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_internal_bus_reset(SCp->device->host); 19861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_chip_reset(SCp->device->host); 1987df0ae2497ddefd72a87f3a3b34ff32455d7d4ae0Jeff Garzik 1988df0ae2497ddefd72a87f3a3b34ff32455d7d4ae0Jeff Garzik spin_unlock_irq(SCp->device->host->host_lock); 1989df0ae2497ddefd72a87f3a3b34ff32455d7d4ae0Jeff Garzik 19901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return SUCCESS; 19911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 19941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_set_period(struct scsi_target *STp, int period) 19951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *SHp = dev_to_shost(STp->dev.parent); 19971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 19981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SHp->hostdata[0]; 19991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(!hostdata->fast) 20011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 20021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(period < hostdata->min_period) 20041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds period = hostdata->min_period; 20051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_period(STp) = period; 20071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_flags(STp) &= ~(NCR_700_DEV_NEGOTIATED_SYNC | 20081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_DEV_BEGIN_SYNC_NEGOTIATION); 20091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_flags(STp) |= NCR_700_DEV_PRINT_SYNC_NEGOTIATION; 20101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 20131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_set_offset(struct scsi_target *STp, int offset) 20141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct Scsi_Host *SHp = dev_to_shost(STp->dev.parent); 20161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 20171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SHp->hostdata[0]; 20181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int max_offset = hostdata->chip710 20191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ? NCR_710_MAX_OFFSET : NCR_700_MAX_OFFSET; 20201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(!hostdata->fast) 20221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 20231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(offset > max_offset) 20251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset = max_offset; 20261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if we're currently async, make sure the period is reasonable */ 20281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(spi_offset(STp) == 0 && (spi_period(STp) < hostdata->min_period || 20291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_period(STp) > 0xff)) 20301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_period(STp) = hostdata->min_period; 20311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_offset(STp) = offset; 20331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_flags(STp) &= ~(NCR_700_DEV_NEGOTIATED_SYNC | 20341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_DEV_BEGIN_SYNC_NEGOTIATION); 20351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_flags(STp) |= NCR_700_DEV_PRINT_SYNC_NEGOTIATION; 20361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20380f13fc09db68de92585558984bff1c51b87db72fJames BottomleySTATIC int 20390f13fc09db68de92585558984bff1c51b87db72fJames BottomleyNCR_700_slave_alloc(struct scsi_device *SDp) 20400f13fc09db68de92585558984bff1c51b87db72fJames Bottomley{ 20410f13fc09db68de92585558984bff1c51b87db72fJames Bottomley SDp->hostdata = kzalloc(sizeof(struct NCR_700_Device_Parameters), 20420f13fc09db68de92585558984bff1c51b87db72fJames Bottomley GFP_KERNEL); 20431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20440f13fc09db68de92585558984bff1c51b87db72fJames Bottomley if (!SDp->hostdata) 20450f13fc09db68de92585558984bff1c51b87db72fJames Bottomley return -ENOMEM; 20460f13fc09db68de92585558984bff1c51b87db72fJames Bottomley 20470f13fc09db68de92585558984bff1c51b87db72fJames Bottomley return 0; 20480f13fc09db68de92585558984bff1c51b87db72fJames Bottomley} 20491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC int 20511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_slave_configure(struct scsi_device *SDp) 20521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 20541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SDp->host->hostdata[0]; 20551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* to do here: allocate memory; build a queue_full list */ 20571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(SDp->tagged_supported) { 20581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_set_tag_type(SDp, MSG_ORDERED_TAG); 20591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_activate_tcq(SDp, NCR_700_DEFAULT_TAGS); 20601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_tag_neg_state(SDp, NCR_700_START_TAG_NEGOTIATION); 20611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 20621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* initialise to default depth */ 20631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_adjust_queue_depth(SDp, 0, SDp->host->cmd_per_lun); 20641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(hostdata->fast) { 20661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Find the correct offset and period via domain validation */ 20671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!spi_initial_dv(SDp->sdev_target)) 20681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_dv_device(SDp); 20691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 20701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_offset(SDp->sdev_target) = 0; 20711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_period(SDp->sdev_target) = 0; 20721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 20741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC void 20771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsNCR_700_slave_destroy(struct scsi_device *SDp) 20781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 207967d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley kfree(SDp->hostdata); 208067d59dfdeb21df2c16dcd478b66177e91178ecd0James Bottomley SDp->hostdata = NULL; 20811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 2084e881a172dac4d9ea3b2a1540041d872963c269bdMike ChristieNCR_700_change_queue_depth(struct scsi_device *SDp, int depth, int reason) 20851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2086e881a172dac4d9ea3b2a1540041d872963c269bdMike Christie if (reason != SCSI_QDEPTH_DEFAULT) 2087e881a172dac4d9ea3b2a1540041d872963c269bdMike Christie return -EOPNOTSUPP; 2088e881a172dac4d9ea3b2a1540041d872963c269bdMike Christie 20891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (depth > NCR_700_MAX_TAGS) 20901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds depth = NCR_700_MAX_TAGS; 20911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_adjust_queue_depth(SDp, scsi_get_tag_type(SDp), depth); 20931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return depth; 20941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int NCR_700_change_queue_type(struct scsi_device *SDp, int tag_type) 20971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int change_tag = ((tag_type ==0 && scsi_get_tag_type(SDp) != 0) 20991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || (tag_type != 0 && scsi_get_tag_type(SDp) == 0)); 21001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct NCR_700_Host_Parameters *hostdata = 21011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct NCR_700_Host_Parameters *)SDp->host->hostdata[0]; 21021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_set_tag_type(SDp, tag_type); 21041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* We have a global (per target) flag to track whether TCQ is 21061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * enabled, so we'll be turning it off for the entire target here. 21071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * our tag algorithm will fail if we mix tagged and untagged commands, 21081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * so quiesce the device before doing this */ 21091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (change_tag) 21101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_target_quiesce(SDp->sdev_target); 21111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!tag_type) { 21131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* shift back to the default unqueued number of commands 21141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (the user can still raise this) */ 21151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_deactivate_tcq(SDp, SDp->host->cmd_per_lun); 2116422c0d61d591cbfb70f029e13505fb437e169d68Jeff Garzik hostdata->tag_negotiated &= ~(1 << sdev_id(SDp)); 21171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 21181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Here, we cleared the negotiation flag above, so this 21191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * will force the driver to renegotiate */ 21201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_activate_tcq(SDp, SDp->queue_depth); 21211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (change_tag) 21221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_set_tag_neg_state(SDp, NCR_700_START_TAG_NEGOTIATION); 21231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 21241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (change_tag) 21251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds scsi_target_resume(SDp->sdev_target); 21261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return tag_type; 21281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 213110523b3b82456e416cbaffcc24ea2246980aa746Yani IoannouNCR_700_show_active_tags(struct device *dev, struct device_attribute *attr, char *buf) 21321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct scsi_device *SDp = to_scsi_device(dev); 21341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return snprintf(buf, 20, "%d\n", NCR_700_get_depth(SDp)); 21361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct device_attribute NCR_700_active_tags_attr = { 21391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .attr = { 21401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .name = "active_tags", 21411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .mode = S_IRUGO, 21421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }, 21431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .show = NCR_700_show_active_tags, 21441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 21451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTATIC struct device_attribute *NCR_700_dev_attrs[] = { 21471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &NCR_700_active_tags_attr, 21481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NULL, 21491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 21501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(NCR_700_detect); 21521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(NCR_700_release); 21531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(NCR_700_intr); 21541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct spi_function_template NCR_700_transport_functions = { 21561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_period = NCR_700_set_period, 21571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .show_period = 1, 21581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_offset = NCR_700_set_offset, 21591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .show_offset = 1, 21601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 21611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init NCR_700_init(void) 21631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NCR_700_transport_template = spi_attach_transport(&NCR_700_transport_functions); 21651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(!NCR_700_transport_template) 21661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 21671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 21681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit NCR_700_exit(void) 21711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spi_release_transport(NCR_700_transport_template); 21731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(NCR_700_init); 21761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(NCR_700_exit); 21771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2178