^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Adaptec AIC7xxx device driver for Linux.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic7xxx_osm.c#235 $
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (c) 1994 John Aycock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * The University of Calgary Department of Computer Science.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * This program is free software; you can redistribute it and/or modify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * it under the terms of the GNU General Public License as published by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * the Free Software Foundation; either version 2, or (at your option)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * any later version.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * This program is distributed in the hope that it will be useful,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * but WITHOUT ANY WARRANTY; without even the implied warranty of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * GNU General Public License for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * You should have received a copy of the GNU General Public License
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * along with this program; see the file COPYING. If not, write to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * Sources include the Adaptec 1740 driver (aha1740.c), the Ultrastor 24F
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * driver (ultrastor.c), various Linux kernel source, the Adaptec EISA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * config file (!adp7771.cfg), the Adaptec AHA-2740A Series User's Guide,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * the Linux Kernel Hacker's Guide, Writing a SCSI Device Driver for Linux,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * the Adaptec 1542 driver (aha1542.c), the Adaptec EISA overlay file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * (adp7770.ovl), the Adaptec AHA-2740 Series Technical Reference Manual,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * the Adaptec AIC-7770 Data Book, the ANSI SCSI specification, the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * ANSI SCSI-2 specification (draft 10c), ...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * --------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * Modifications by Daniel M. Eischen (deischen@iworks.InterWorks.org):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * Substantially modified to include support for wide and twin bus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * adapters, DMAing of SCBs, tagged queueing, IRQ sharing, bug fixes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * SCB paging, and other rework of the code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * --------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * Copyright (c) 1994-2000 Justin T. Gibbs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * Copyright (c) 2000-2001 Adaptec Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * Redistribution and use in source and binary forms, with or without
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * modification, are permitted provided that the following conditions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * are met:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * 1. Redistributions of source code must retain the above copyright
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * notice, this list of conditions, and the following disclaimer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * without modification.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * 2. Redistributions in binary form must reproduce at minimum a disclaimer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * substantially similar to the "NO WARRANTY" disclaimer below
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * ("Disclaimer") and any redistribution must be conditioned upon
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * including a substantially similar Disclaimer requirement for further
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * binary redistribution.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * 3. Neither the names of the above-listed copyright holders nor the names
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * of any contributors may be used to endorse or promote products derived
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * from this software without specific prior written permission.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * Alternatively, this software may be distributed under the terms of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * GNU General Public License ("GPL") version 2 as published by the Free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * Software Foundation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * NO WARRANTY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) * POSSIBILITY OF SUCH DAMAGES.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) *---------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * Thanks also go to (in alphabetical order) the following:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * Rory Bolt - Sequencer bug fixes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * Jay Estabrook - Initial DEC Alpha support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * Doug Ledford - Much needed abort/reset bug fixes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * Kai Makisara - DMAing of SCBs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * A Boot time option was also added for not resetting the scsi bus.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * Form: aic7xxx=extended
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * aic7xxx=no_reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * aic7xxx=verbose
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * Daniel M. Eischen, deischen@iworks.InterWorks.org, 1/23/97
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * Id: aic7xxx.c,v 4.1 1997/06/12 08:23:42 deang Exp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * Further driver modifications made by Doug Ledford <dledford@redhat.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * Copyright (c) 1997-1999 Doug Ledford
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * These changes are released under the same licensing terms as the FreeBSD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * driver written by Justin Gibbs. Please see his Copyright notice above
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * for the exact terms and conditions covering my changes as well as the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * warranty statement.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * Modifications made to the aic7xxx.c,v 4.1 driver from Dan Eischen include
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * but are not limited to:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) * 1: Import of the latest FreeBSD sequencer code for this driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) * 2: Modification of kernel code to accommodate different sequencer semantics
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) * 3: Extensive changes throughout kernel portion of driver to improve
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) * abort/reset processing and error hanndling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * 4: Other work contributed by various people on the Internet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * 5: Changes to printk information and verbosity selection code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * 6: General reliability related changes, especially in IRQ management
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) * 7: Modifications to the default probe/attach order for supported cards
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * 8: SMP friendliness has been improved
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) #include "aic7xxx_osm.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) #include "aic7xxx_inline.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) #include <scsi/scsicam.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) static struct scsi_transport_template *ahc_linux_transport_template = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) #include <linux/init.h> /* __setup */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) #include <linux/mm.h> /* For fetching system memory size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) #include <linux/blkdev.h> /* For block_size() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) #include <linux/delay.h> /* For ssleep/msleep */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * Set this to the delay in seconds after SCSI bus reset.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * Note, we honor this only for the initial bus reset.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * The scsi error recovery code performs its own bus settle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) * delay handling for error recovery actions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) #ifdef CONFIG_AIC7XXX_RESET_DELAY_MS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) #define AIC7XXX_RESET_DELAY CONFIG_AIC7XXX_RESET_DELAY_MS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) #define AIC7XXX_RESET_DELAY 5000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) * To change the default number of tagged transactions allowed per-device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * add a line to the lilo.conf file like:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * append="aic7xxx=verbose,tag_info:{{32,32,32,32},{32,32,32,32}}"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * which will result in the first four devices on the first two
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) * controllers being set to a tagged queue depth of 32.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) * The tag_commands is an array of 16 to allow for wide and twin adapters.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) * Twin adapters will use indexes 0-7 for channel 0, and indexes 8-15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) * for channel 1.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) typedef struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) uint8_t tag_commands[16]; /* Allow for wide/twin adapters. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) } adapter_tag_info_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) * Modify this as you see fit for your system.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) * 0 tagged queuing disabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) * 1 <= n <= 253 n == max tags ever dispatched.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) * The driver will throttle the number of commands dispatched to a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) * device if it returns queue full. For devices with a fixed maximum
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * queue depth, the driver will eventually determine this depth and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) * lock it in (a console message is printed to indicate that a lock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * has occurred). On some devices, queue full is returned for a temporary
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) * resource shortage. These devices will return queue full at varying
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * depths. The driver will throttle back when the queue fulls occur and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) * attempt to slowly increase the depth over time as the device recovers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * from the resource shortage.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) * In this example, the first line will disable tagged queueing for all
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) * the devices on the first probed aic7xxx adapter.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) * The second line enables tagged queueing with 4 commands/LUN for IDs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) * (0, 2-11, 13-15), disables tagged queueing for ID 12, and tells the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * driver to attempt to use up to 64 tags for ID 1.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * The third line is the same as the first line.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) * The fourth line disables tagged queueing for devices 0 and 3. It
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * enables tagged queueing for the other IDs, with 16 commands/LUN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) * for IDs 1 and 4, 127 commands/LUN for ID 8, and 4 commands/LUN for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) * IDs 2, 5-7, and 9-15.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) * NOTE: The below structure is for reference only, the actual structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * to modify in order to change things is just below this comment block.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) adapter_tag_info_t aic7xxx_tag_info[] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {{4, 64, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 4, 4, 4}},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) {{0, 16, 4, 0, 16, 4, 4, 4, 127, 4, 4, 4, 4, 4, 4, 4}}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) #ifdef CONFIG_AIC7XXX_CMDS_PER_DEVICE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) #define AIC7XXX_CMDS_PER_DEVICE CONFIG_AIC7XXX_CMDS_PER_DEVICE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) #define AIC7XXX_CMDS_PER_DEVICE AHC_MAX_QUEUE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) #define AIC7XXX_CONFIGED_TAG_COMMANDS { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) AIC7XXX_CMDS_PER_DEVICE, AIC7XXX_CMDS_PER_DEVICE, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) AIC7XXX_CMDS_PER_DEVICE, AIC7XXX_CMDS_PER_DEVICE, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) AIC7XXX_CMDS_PER_DEVICE, AIC7XXX_CMDS_PER_DEVICE, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) AIC7XXX_CMDS_PER_DEVICE, AIC7XXX_CMDS_PER_DEVICE, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) AIC7XXX_CMDS_PER_DEVICE, AIC7XXX_CMDS_PER_DEVICE, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) AIC7XXX_CMDS_PER_DEVICE, AIC7XXX_CMDS_PER_DEVICE, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) AIC7XXX_CMDS_PER_DEVICE, AIC7XXX_CMDS_PER_DEVICE, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) AIC7XXX_CMDS_PER_DEVICE, AIC7XXX_CMDS_PER_DEVICE \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) * By default, use the number of commands specified by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) * the users kernel configuration.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) static adapter_tag_info_t aic7xxx_tag_info[] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) {AIC7XXX_CONFIGED_TAG_COMMANDS},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {AIC7XXX_CONFIGED_TAG_COMMANDS},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) {AIC7XXX_CONFIGED_TAG_COMMANDS},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) {AIC7XXX_CONFIGED_TAG_COMMANDS},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) {AIC7XXX_CONFIGED_TAG_COMMANDS},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) {AIC7XXX_CONFIGED_TAG_COMMANDS},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) {AIC7XXX_CONFIGED_TAG_COMMANDS},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) {AIC7XXX_CONFIGED_TAG_COMMANDS},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) {AIC7XXX_CONFIGED_TAG_COMMANDS},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {AIC7XXX_CONFIGED_TAG_COMMANDS},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) {AIC7XXX_CONFIGED_TAG_COMMANDS},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) {AIC7XXX_CONFIGED_TAG_COMMANDS},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) {AIC7XXX_CONFIGED_TAG_COMMANDS},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) {AIC7XXX_CONFIGED_TAG_COMMANDS},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) {AIC7XXX_CONFIGED_TAG_COMMANDS},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) {AIC7XXX_CONFIGED_TAG_COMMANDS}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) * There should be a specific return value for this in scsi.h, but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) * it seems that most drivers ignore it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) #define DID_UNDERFLOW DID_ERROR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) ahc_print_path(struct ahc_softc *ahc, struct scb *scb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) printk("(scsi%d:%c:%d:%d): ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) ahc->platform_data->host->host_no,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) scb != NULL ? SCB_GET_CHANNEL(ahc, scb) : 'X',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) scb != NULL ? SCB_GET_TARGET(ahc, scb) : -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) scb != NULL ? SCB_GET_LUN(scb) : -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) * XXX - these options apply unilaterally to _all_ 274x/284x/294x
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) * cards in the system. This should be fixed. Exceptions to this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) * rule are noted in the comments.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) * Skip the scsi bus reset. Non 0 make us skip the reset at startup. This
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) * has no effect on any later resets that might occur due to things like
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) * SCSI bus timeouts.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) static uint32_t aic7xxx_no_reset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) * Should we force EXTENDED translation on a controller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) * 0 == Use whatever is in the SEEPROM or default to off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) * 1 == Use whatever is in the SEEPROM or default to on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) static uint32_t aic7xxx_extended;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) * PCI bus parity checking of the Adaptec controllers. This is somewhat
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) * dubious at best. To my knowledge, this option has never actually
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) * solved a PCI parity problem, but on certain machines with broken PCI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) * chipset configurations where stray PCI transactions with bad parity are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) * the norm rather than the exception, the error messages can be overwhelming.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) * It's included in the driver for completeness.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) * 0 = Shut off PCI parity check
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) * non-0 = reverse polarity pci parity checking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) static uint32_t aic7xxx_pci_parity = ~0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) * There are lots of broken chipsets in the world. Some of them will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) * violate the PCI spec when we issue byte sized memory writes to our
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) * controller. I/O mapped register access, if allowed by the given
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) * platform, will work in almost all cases.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) uint32_t aic7xxx_allow_memio = ~0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) * So that we can set how long each device is given as a selection timeout.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) * The table of values goes like this:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) * 0 - 256ms
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) * 1 - 128ms
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) * 2 - 64ms
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) * 3 - 32ms
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) * We default to 256ms because some older devices need a longer time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) * to respond to initial selection.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) static uint32_t aic7xxx_seltime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) * Certain devices do not perform any aging on commands. Should the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) * device be saturated by commands in one portion of the disk, it is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) * possible for transactions on far away sectors to never be serviced.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) * To handle these devices, we can periodically send an ordered tag to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) * force all outstanding transactions to be serviced prior to a new
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) * transaction.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) static uint32_t aic7xxx_periodic_otag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) * Module information and settable options.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) static char *aic7xxx = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) MODULE_AUTHOR("Maintainer: Hannes Reinecke <hare@suse.de>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) MODULE_DESCRIPTION("Adaptec AIC77XX/78XX SCSI Host Bus Adapter driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) MODULE_LICENSE("Dual BSD/GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) MODULE_VERSION(AIC7XXX_DRIVER_VERSION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) module_param(aic7xxx, charp, 0444);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) MODULE_PARM_DESC(aic7xxx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) "period-delimited options string:\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) " verbose Enable verbose/diagnostic logging\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) " allow_memio Allow device registers to be memory mapped\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) " debug Bitmask of debug values to enable\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) " no_probe Toggle EISA/VLB controller probing\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) " probe_eisa_vl Toggle EISA/VLB controller probing\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) " no_reset Suppress initial bus resets\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) " extended Enable extended geometry on all controllers\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) " periodic_otag Send an ordered tagged transaction\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) " periodically to prevent tag starvation.\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) " This may be required by some older disk\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) " drives or RAID arrays.\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) " tag_info:<tag_str> Set per-target tag depth\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) " global_tag_depth:<int> Global tag depth for every target\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) " on every bus\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) " seltime:<int> Selection Timeout\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) " (0/256ms,1/128ms,2/64ms,3/32ms)\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) "\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) " Sample modprobe configuration file:\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) " # Toggle EISA/VLB probing\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) " # Set tag depth on Controller 1/Target 1 to 10 tags\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) " # Shorten the selection timeout to 128ms\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) "\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) " options aic7xxx 'aic7xxx=probe_eisa_vl.tag_info:{{}.{.10}}.seltime:1'\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) static void ahc_linux_handle_scsi_status(struct ahc_softc *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) struct scsi_device *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) struct scb *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) static void ahc_linux_queue_cmd_complete(struct ahc_softc *ahc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) struct scsi_cmnd *cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) static void ahc_linux_freeze_simq(struct ahc_softc *ahc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) static void ahc_linux_release_simq(struct ahc_softc *ahc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) static int ahc_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) static void ahc_linux_initialize_scsi_bus(struct ahc_softc *ahc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) static u_int ahc_linux_user_tagdepth(struct ahc_softc *ahc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) struct ahc_devinfo *devinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) static void ahc_linux_device_queue_depth(struct scsi_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) static int ahc_linux_run_command(struct ahc_softc*,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) struct ahc_linux_device *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) struct scsi_cmnd *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) static void ahc_linux_setup_tag_info_global(char *p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) static int aic7xxx_setup(char *s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) static int ahc_linux_unit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) /************************** OS Utility Wrappers *******************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) ahc_delay(long usec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) * udelay on Linux can have problems for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) * multi-millisecond waits. Wait at most
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) * 1024us per call.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) while (usec > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) udelay(usec % 1024);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) usec -= 1024;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) /***************************** Low Level I/O **********************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) uint8_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) ahc_inb(struct ahc_softc * ahc, long port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) uint8_t x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) if (ahc->tag == BUS_SPACE_MEMIO) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) x = readb(ahc->bsh.maddr + port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) x = inb(ahc->bsh.ioport + port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) mb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) return (x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) ahc_outb(struct ahc_softc * ahc, long port, uint8_t val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) if (ahc->tag == BUS_SPACE_MEMIO) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) writeb(val, ahc->bsh.maddr + port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) outb(val, ahc->bsh.ioport + port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) mb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) ahc_outsb(struct ahc_softc * ahc, long port, uint8_t *array, int count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) * There is probably a more efficient way to do this on Linux
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) * but we don't use this for anything speed critical and this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) * should work.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) for (i = 0; i < count; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) ahc_outb(ahc, port, *array++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) ahc_insb(struct ahc_softc * ahc, long port, uint8_t *array, int count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) * There is probably a more efficient way to do this on Linux
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) * but we don't use this for anything speed critical and this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) * should work.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) for (i = 0; i < count; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) *array++ = ahc_inb(ahc, port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) /********************************* Inlines ************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) static void ahc_linux_unmap_scb(struct ahc_softc*, struct scb*);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) static int ahc_linux_map_seg(struct ahc_softc *ahc, struct scb *scb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) struct ahc_dma_seg *sg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) dma_addr_t addr, bus_size_t len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) ahc_linux_unmap_scb(struct ahc_softc *ahc, struct scb *scb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) struct scsi_cmnd *cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) cmd = scb->io_ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) ahc_sync_sglist(ahc, scb, BUS_DMASYNC_POSTWRITE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) scsi_dma_unmap(cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) ahc_linux_map_seg(struct ahc_softc *ahc, struct scb *scb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) struct ahc_dma_seg *sg, dma_addr_t addr, bus_size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) int consumed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) if ((scb->sg_count + 1) > AHC_NSEG)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) panic("Too few segs for dma mapping. "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) "Increase AHC_NSEG\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) consumed = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) sg->addr = ahc_htole32(addr & 0xFFFFFFFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) scb->platform_data->xfer_len += len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) if (sizeof(dma_addr_t) > 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) && (ahc->flags & AHC_39BIT_ADDRESSING) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) len |= (addr >> 8) & AHC_SG_HIGH_ADDR_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) sg->len = ahc_htole32(len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) return (consumed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) * Return a string describing the driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) static const char *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) ahc_linux_info(struct Scsi_Host *host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) static char buffer[512];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) char ahc_info[256];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) char *bp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) struct ahc_softc *ahc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) bp = &buffer[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) ahc = *(struct ahc_softc **)host->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) memset(bp, 0, sizeof(buffer));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) strcpy(bp, "Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev " AIC7XXX_DRIVER_VERSION "\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) " <");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) strcat(bp, ahc->description);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) strcat(bp, ">\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) " ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) ahc_controller_info(ahc, ahc_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) strcat(bp, ahc_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) strcat(bp, "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) return (bp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) * Queue an SCB to the controller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) ahc_linux_queue_lck(struct scsi_cmnd * cmd, void (*scsi_done) (struct scsi_cmnd *))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) struct ahc_softc *ahc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) struct ahc_linux_device *dev = scsi_transport_device_data(cmd->device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) int rtn = SCSI_MLQUEUE_HOST_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) ahc = *(struct ahc_softc **)cmd->device->host->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) ahc_lock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) if (ahc->platform_data->qfrozen == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) cmd->scsi_done = scsi_done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) cmd->result = CAM_REQ_INPROG << 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) rtn = ahc_linux_run_command(ahc, dev, cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) ahc_unlock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) return rtn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) static DEF_SCSI_QCMD(ahc_linux_queue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) static inline struct scsi_target **
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) ahc_linux_target_in_softc(struct scsi_target *starget)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) struct ahc_softc *ahc =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) *((struct ahc_softc **)dev_to_shost(&starget->dev)->hostdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) unsigned int target_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) target_offset = starget->id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) if (starget->channel != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) target_offset += 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) return &ahc->platform_data->starget[target_offset];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) ahc_linux_target_alloc(struct scsi_target *starget)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) struct ahc_softc *ahc =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) *((struct ahc_softc **)dev_to_shost(&starget->dev)->hostdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) struct seeprom_config *sc = ahc->seep_config;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) struct scsi_target **ahc_targp = ahc_linux_target_in_softc(starget);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) unsigned short scsirate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) struct ahc_devinfo devinfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) char channel = starget->channel + 'A';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) unsigned int our_id = ahc->our_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) unsigned int target_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) target_offset = starget->id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) if (starget->channel != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) target_offset += 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) if (starget->channel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) our_id = ahc->our_id_b;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) ahc_lock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) BUG_ON(*ahc_targp != NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) *ahc_targp = starget;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) if (sc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) int maxsync = AHC_SYNCRATE_DT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) int ultra = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) int flags = sc->device_flags[target_offset];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) if (ahc->flags & AHC_NEWEEPROM_FMT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) if (flags & CFSYNCHISULTRA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) ultra = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) } else if (flags & CFULTRAEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) ultra = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) /* AIC nutcase; 10MHz appears as ultra = 1, CFXFER = 0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) * change it to ultra=0, CFXFER = 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) if(ultra && (flags & CFXFER) == 0x04) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) ultra = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) flags &= ~CFXFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) if ((ahc->features & AHC_ULTRA2) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) scsirate = (flags & CFXFER) | (ultra ? 0x8 : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) scsirate = (flags & CFXFER) << 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) maxsync = ultra ? AHC_SYNCRATE_ULTRA :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) AHC_SYNCRATE_FAST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) spi_max_width(starget) = (flags & CFWIDEB) ? 1 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) if (!(flags & CFSYNCH))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) spi_max_offset(starget) = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) spi_min_period(starget) =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) ahc_find_period(ahc, scsirate, maxsync);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) ahc_compile_devinfo(&devinfo, our_id, starget->id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) CAM_LUN_WILDCARD, channel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) ROLE_INITIATOR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) ahc_set_syncrate(ahc, &devinfo, NULL, 0, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) AHC_TRANS_GOAL, /*paused*/FALSE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) ahc_set_width(ahc, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) AHC_TRANS_GOAL, /*paused*/FALSE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) ahc_unlock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) ahc_linux_target_destroy(struct scsi_target *starget)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) struct scsi_target **ahc_targp = ahc_linux_target_in_softc(starget);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) *ahc_targp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) ahc_linux_slave_alloc(struct scsi_device *sdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) struct ahc_softc *ahc =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) *((struct ahc_softc **)sdev->host->hostdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) struct scsi_target *starget = sdev->sdev_target;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) struct ahc_linux_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) if (bootverbose)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) printk("%s: Slave Alloc %d\n", ahc_name(ahc), sdev->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) dev = scsi_transport_device_data(sdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) memset(dev, 0, sizeof(*dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) * We start out life using untagged
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) * transactions of which we allow one.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) dev->openings = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) * Set maxtags to 0. This will be changed if we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) * later determine that we are dealing with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) * a tagged queuing capable device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) dev->maxtags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) spi_period(starget) = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) ahc_linux_slave_configure(struct scsi_device *sdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) if (bootverbose)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) sdev_printk(KERN_INFO, sdev, "Slave Configure\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) ahc_linux_device_queue_depth(sdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) /* Initial Domain Validation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) if (!spi_initial_dv(sdev->sdev_target))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) spi_dv_device(sdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) #if defined(__i386__)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) * Return the disk geometry for the given SCSI device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) ahc_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) sector_t capacity, int geom[])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) int heads;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) int sectors;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) int cylinders;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) int extended;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) struct ahc_softc *ahc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) u_int channel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) ahc = *((struct ahc_softc **)sdev->host->hostdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) channel = sdev_channel(sdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) if (scsi_partsize(bdev, capacity, geom))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) heads = 64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) sectors = 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) cylinders = aic_sector_div(capacity, heads, sectors);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) if (aic7xxx_extended != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) extended = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) else if (channel == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) extended = (ahc->flags & AHC_EXTENDED_TRANS_A) != 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) extended = (ahc->flags & AHC_EXTENDED_TRANS_B) != 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) if (extended && cylinders >= 1024) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) heads = 255;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) sectors = 63;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) cylinders = aic_sector_div(capacity, heads, sectors);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) geom[0] = heads;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) geom[1] = sectors;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) geom[2] = cylinders;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) return (0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) * Abort the current SCSI command(s).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) ahc_linux_abort(struct scsi_cmnd *cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) error = ahc_linux_queue_recovery_cmd(cmd, SCB_ABORT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) if (error != SUCCESS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) printk("aic7xxx_abort returns 0x%x\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) return (error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) * Attempt to send a target reset message to the device that timed out.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) ahc_linux_dev_reset(struct scsi_cmnd *cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) error = ahc_linux_queue_recovery_cmd(cmd, SCB_DEVICE_RESET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) if (error != SUCCESS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) printk("aic7xxx_dev_reset returns 0x%x\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) return (error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) * Reset the SCSI bus.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) ahc_linux_bus_reset(struct scsi_cmnd *cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) struct ahc_softc *ahc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) int found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) ahc = *(struct ahc_softc **)cmd->device->host->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) ahc_lock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) found = ahc_reset_channel(ahc, scmd_channel(cmd) + 'A',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) /*initiate reset*/TRUE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) ahc_unlock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) if (bootverbose)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) printk("%s: SCSI bus reset delivered. "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) "%d SCBs aborted.\n", ahc_name(ahc), found);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) return SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) struct scsi_host_template aic7xxx_driver_template = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) .module = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) .name = "aic7xxx",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) .proc_name = "aic7xxx",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) .show_info = ahc_linux_show_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) .write_info = ahc_proc_write_seeprom,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) .info = ahc_linux_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) .queuecommand = ahc_linux_queue,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) .eh_abort_handler = ahc_linux_abort,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) .eh_device_reset_handler = ahc_linux_dev_reset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) .eh_bus_reset_handler = ahc_linux_bus_reset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) #if defined(__i386__)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) .bios_param = ahc_linux_biosparam,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) .can_queue = AHC_MAX_QUEUE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) .this_id = -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) .max_sectors = 8192,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) .cmd_per_lun = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) .slave_alloc = ahc_linux_slave_alloc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) .slave_configure = ahc_linux_slave_configure,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) .target_alloc = ahc_linux_target_alloc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) .target_destroy = ahc_linux_target_destroy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) /**************************** Tasklet Handler *********************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) /******************************** Macros **************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) #define BUILD_SCSIID(ahc, cmd) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) ((((cmd)->device->id << TID_SHIFT) & TID) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) | (((cmd)->device->channel == 0) ? (ahc)->our_id : (ahc)->our_id_b) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) | (((cmd)->device->channel == 0) ? 0 : TWIN_CHNLB))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) /******************************** Bus DMA *************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) ahc_dma_tag_create(struct ahc_softc *ahc, bus_dma_tag_t parent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) bus_size_t alignment, bus_size_t boundary,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) dma_addr_t lowaddr, dma_addr_t highaddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) bus_dma_filter_t *filter, void *filterarg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) bus_size_t maxsize, int nsegments,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) bus_size_t maxsegsz, int flags, bus_dma_tag_t *ret_tag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) bus_dma_tag_t dmat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) dmat = kmalloc(sizeof(*dmat), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) if (dmat == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) return (ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) * Linux is very simplistic about DMA memory. For now don't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) * maintain all specification information. Once Linux supplies
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) * better facilities for doing these operations, or the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) * needs of this particular driver change, we might need to do
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) * more here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) dmat->alignment = alignment;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) dmat->boundary = boundary;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) dmat->maxsize = maxsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) *ret_tag = dmat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) return (0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) ahc_dma_tag_destroy(struct ahc_softc *ahc, bus_dma_tag_t dmat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) kfree(dmat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) ahc_dmamem_alloc(struct ahc_softc *ahc, bus_dma_tag_t dmat, void** vaddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) int flags, bus_dmamap_t *mapp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) /* XXX: check if we really need the GFP_ATOMIC and unwind this mess! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) *vaddr = dma_alloc_coherent(ahc->dev, dmat->maxsize, mapp, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) if (*vaddr == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) return ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) ahc_dmamem_free(struct ahc_softc *ahc, bus_dma_tag_t dmat,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) void* vaddr, bus_dmamap_t map)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) dma_free_coherent(ahc->dev, dmat->maxsize, vaddr, map);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) ahc_dmamap_load(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) void *buf, bus_size_t buflen, bus_dmamap_callback_t *cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) void *cb_arg, int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) * Assume for now that this will only be used during
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) * initialization and not for per-transaction buffer mapping.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) bus_dma_segment_t stack_sg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) stack_sg.ds_addr = map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) stack_sg.ds_len = dmat->maxsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) return (0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) ahc_dmamap_destroy(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) ahc_dmamap_unload(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) /* Nothing to do */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) return (0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) ahc_linux_setup_tag_info_global(char *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) int tags, i, j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) tags = simple_strtoul(p + 1, NULL, 0) & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) printk("Setting Global Tags= %d\n", tags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) for (i = 0; i < ARRAY_SIZE(aic7xxx_tag_info); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) for (j = 0; j < AHC_NUM_TARGETS; j++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) aic7xxx_tag_info[i].tag_commands[j] = tags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) ahc_linux_setup_tag_info(u_long arg, int instance, int targ, int32_t value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) if ((instance >= 0) && (targ >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) && (instance < ARRAY_SIZE(aic7xxx_tag_info))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) && (targ < AHC_NUM_TARGETS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) aic7xxx_tag_info[instance].tag_commands[targ] = value & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) if (bootverbose)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) printk("tag_info[%d:%d] = %d\n", instance, targ, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) static char *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) ahc_parse_brace_option(char *opt_name, char *opt_arg, char *end, int depth,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) void (*callback)(u_long, int, int, int32_t),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) u_long callback_arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) char *tok_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) char *tok_end2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) int instance;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) int targ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) int done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) char tok_list[] = {'.', ',', '{', '}', '\0'};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) /* All options use a ':' name/arg separator */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) if (*opt_arg != ':')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) return (opt_arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) opt_arg++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) instance = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) targ = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) done = FALSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) * Restore separator that may be in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) * the middle of our option argument.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) tok_end = strchr(opt_arg, '\0');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) if (tok_end < end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) *tok_end = ',';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) while (!done) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) switch (*opt_arg) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) case '{':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) if (instance == -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) instance = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) if (depth > 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) if (targ == -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) targ = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) printk("Malformed Option %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) opt_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) done = TRUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) opt_arg++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) case '}':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) if (targ != -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) targ = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) else if (instance != -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) instance = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) opt_arg++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) case ',':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) case '.':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) if (instance == -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) done = TRUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) else if (targ >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) targ++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) else if (instance >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) instance++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) opt_arg++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) case '\0':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) done = TRUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) tok_end = end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) for (i = 0; tok_list[i]; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) tok_end2 = strchr(opt_arg, tok_list[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) if ((tok_end2) && (tok_end2 < tok_end))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) tok_end = tok_end2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) callback(callback_arg, instance, targ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) simple_strtol(opt_arg, NULL, 0));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) opt_arg = tok_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) return (opt_arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) * Handle Linux boot parameters. This routine allows for assigning a value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) * to a parameter with a ':' between the parameter and the value.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) * ie. aic7xxx=stpwlev:1,extended
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) aic7xxx_setup(char *s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) int i, n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) char *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) char *end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) static const struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) const char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) uint32_t *flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) } options[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) { "extended", &aic7xxx_extended },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) { "no_reset", &aic7xxx_no_reset },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) { "verbose", &aic7xxx_verbose },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) { "allow_memio", &aic7xxx_allow_memio},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) #ifdef AHC_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) { "debug", &ahc_debug },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) { "periodic_otag", &aic7xxx_periodic_otag },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) { "pci_parity", &aic7xxx_pci_parity },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) { "seltime", &aic7xxx_seltime },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) { "tag_info", NULL },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) { "global_tag_depth", NULL },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) { "dv", NULL }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) end = strchr(s, '\0');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) * XXX ia64 gcc isn't smart enough to know that ARRAY_SIZE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) * will never be 0 in this case.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) n = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) while ((p = strsep(&s, ",.")) != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) if (*p == '\0')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) for (i = 0; i < ARRAY_SIZE(options); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) n = strlen(options[i].name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) if (strncmp(options[i].name, p, n) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) if (i == ARRAY_SIZE(options))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) if (strncmp(p, "global_tag_depth", n) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) ahc_linux_setup_tag_info_global(p + n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) } else if (strncmp(p, "tag_info", n) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) s = ahc_parse_brace_option("tag_info", p + n, end,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) 2, ahc_linux_setup_tag_info, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) } else if (p[n] == ':') {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) *(options[i].flag) = simple_strtoul(p + n + 1, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) } else if (strncmp(p, "verbose", n) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) *(options[i].flag) = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) *(options[i].flag) ^= 0xFFFFFFFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) __setup("aic7xxx=", aic7xxx_setup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) uint32_t aic7xxx_verbose;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) ahc_linux_register_host(struct ahc_softc *ahc, struct scsi_host_template *template)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) char buf[80];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) struct Scsi_Host *host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) char *new_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) u_long s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) template->name = ahc->description;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) host = scsi_host_alloc(template, sizeof(struct ahc_softc *));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) if (host == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) return (ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) *((struct ahc_softc **)host->hostdata) = ahc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) ahc->platform_data->host = host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) host->can_queue = AHC_MAX_QUEUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) host->cmd_per_lun = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) /* XXX No way to communicate the ID for multiple channels */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) host->this_id = ahc->our_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) host->irq = ahc->platform_data->irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) host->max_id = (ahc->features & AHC_WIDE) ? 16 : 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) host->max_lun = AHC_NUM_LUNS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) host->max_channel = (ahc->features & AHC_TWIN) ? 1 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) host->sg_tablesize = AHC_NSEG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) ahc_lock(ahc, &s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) ahc_set_unit(ahc, ahc_linux_unit++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) ahc_unlock(ahc, &s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) sprintf(buf, "scsi%d", host->host_no);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) new_name = kmalloc(strlen(buf) + 1, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) if (new_name != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) strcpy(new_name, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) ahc_set_name(ahc, new_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) host->unique_id = ahc->unit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) ahc_linux_initialize_scsi_bus(ahc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) ahc_intr_enable(ahc, TRUE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) host->transportt = ahc_linux_transport_template;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) retval = scsi_add_host(host, ahc->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) printk(KERN_WARNING "aic7xxx: scsi_add_host failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) scsi_host_put(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) scsi_scan_host(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) * Place the SCSI bus into a known state by either resetting it,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) * or forcing transfer negotiations on the next command to any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) * target.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) ahc_linux_initialize_scsi_bus(struct ahc_softc *ahc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) int numtarg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) unsigned long s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) numtarg = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) ahc_lock(ahc, &s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) if (aic7xxx_no_reset != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) ahc->flags &= ~(AHC_RESET_BUS_A|AHC_RESET_BUS_B);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) if ((ahc->flags & AHC_RESET_BUS_A) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) ahc_reset_channel(ahc, 'A', /*initiate_reset*/TRUE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) numtarg = (ahc->features & AHC_WIDE) ? 16 : 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) if ((ahc->features & AHC_TWIN) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) if ((ahc->flags & AHC_RESET_BUS_B) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) ahc_reset_channel(ahc, 'B', /*initiate_reset*/TRUE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) if (numtarg == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) i = 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) numtarg += 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) * Force negotiation to async for all targets that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) * will not see an initial bus reset.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) for (; i < numtarg; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) struct ahc_devinfo devinfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) struct ahc_initiator_tinfo *tinfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) struct ahc_tmode_tstate *tstate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) u_int our_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) u_int target_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) char channel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) channel = 'A';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) our_id = ahc->our_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) target_id = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) if (i > 7 && (ahc->features & AHC_TWIN) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) channel = 'B';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) our_id = ahc->our_id_b;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) target_id = i % 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) tinfo = ahc_fetch_transinfo(ahc, channel, our_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) target_id, &tstate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) ahc_compile_devinfo(&devinfo, our_id, target_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) CAM_LUN_WILDCARD, channel, ROLE_INITIATOR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) ahc_update_neg_request(ahc, &devinfo, tstate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) tinfo, AHC_NEG_ALWAYS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) ahc_unlock(ahc, &s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) /* Give the bus some time to recover */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) if ((ahc->flags & (AHC_RESET_BUS_A|AHC_RESET_BUS_B)) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) ahc_linux_freeze_simq(ahc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) msleep(AIC7XXX_RESET_DELAY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) ahc_linux_release_simq(ahc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) ahc->platform_data =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) kzalloc(sizeof(struct ahc_platform_data), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) if (ahc->platform_data == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) return (ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) ahc->platform_data->irq = AHC_LINUX_NOIRQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) ahc_lockinit(ahc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) ahc->seltime = (aic7xxx_seltime & 0x3) << 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) ahc->seltime_b = (aic7xxx_seltime & 0x3) << 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) if (aic7xxx_pci_parity == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) ahc->flags |= AHC_DISABLE_PCI_PERR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) return (0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) ahc_platform_free(struct ahc_softc *ahc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) struct scsi_target *starget;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) if (ahc->platform_data != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) /* destroy all of the device and target objects */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) for (i = 0; i < AHC_NUM_TARGETS; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) starget = ahc->platform_data->starget[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) if (starget != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) ahc->platform_data->starget[i] = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) if (ahc->platform_data->irq != AHC_LINUX_NOIRQ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) free_irq(ahc->platform_data->irq, ahc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) if (ahc->tag == BUS_SPACE_PIO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) && ahc->bsh.ioport != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) release_region(ahc->bsh.ioport, 256);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) if (ahc->tag == BUS_SPACE_MEMIO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) && ahc->bsh.maddr != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) iounmap(ahc->bsh.maddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) release_mem_region(ahc->platform_data->mem_busaddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) 0x1000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) if (ahc->platform_data->host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) scsi_host_put(ahc->platform_data->host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) kfree(ahc->platform_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) ahc_platform_freeze_devq(struct ahc_softc *ahc, struct scb *scb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) ahc_platform_abort_scbs(ahc, SCB_GET_TARGET(ahc, scb),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) SCB_GET_CHANNEL(ahc, scb),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) SCB_GET_LUN(scb), SCB_LIST_NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) ROLE_UNKNOWN, CAM_REQUEUE_REQ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) ahc_platform_set_tags(struct ahc_softc *ahc, struct scsi_device *sdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) struct ahc_devinfo *devinfo, ahc_queue_alg alg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) struct ahc_linux_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) int was_queuing;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) int now_queuing;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) if (sdev == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) dev = scsi_transport_device_data(sdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) was_queuing = dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) switch (alg) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) case AHC_QUEUE_NONE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) now_queuing = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) case AHC_QUEUE_BASIC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) now_queuing = AHC_DEV_Q_BASIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) case AHC_QUEUE_TAGGED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) now_queuing = AHC_DEV_Q_TAGGED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) if ((dev->flags & AHC_DEV_FREEZE_TIL_EMPTY) == 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) && (was_queuing != now_queuing)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) && (dev->active != 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) dev->flags |= AHC_DEV_FREEZE_TIL_EMPTY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) dev->qfrozen++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) dev->flags &= ~(AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED|AHC_DEV_PERIODIC_OTAG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) if (now_queuing) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) u_int usertags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) usertags = ahc_linux_user_tagdepth(ahc, devinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) if (!was_queuing) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) * Start out aggressively and allow our
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) * dynamic queue depth algorithm to take
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) * care of the rest.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) dev->maxtags = usertags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) dev->openings = dev->maxtags - dev->active;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) if (dev->maxtags == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) * Queueing is disabled by the user.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) dev->openings = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) } else if (alg == AHC_QUEUE_TAGGED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) dev->flags |= AHC_DEV_Q_TAGGED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) if (aic7xxx_periodic_otag != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) dev->flags |= AHC_DEV_PERIODIC_OTAG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) dev->flags |= AHC_DEV_Q_BASIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) /* We can only have one opening. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) dev->maxtags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) dev->openings = 1 - dev->active;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) switch ((dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) case AHC_DEV_Q_BASIC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) case AHC_DEV_Q_TAGGED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) scsi_change_queue_depth(sdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) dev->openings + dev->active);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) * We allow the OS to queue 2 untagged transactions to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) * us at any time even though we can only execute them
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) * serially on the controller/device. This should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) * remove some latency.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) scsi_change_queue_depth(sdev, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) ahc_platform_abort_scbs(struct ahc_softc *ahc, int target, char channel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) int lun, u_int tag, role_t role, uint32_t status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) static u_int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) ahc_linux_user_tagdepth(struct ahc_softc *ahc, struct ahc_devinfo *devinfo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) static int warned_user;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) u_int tags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) tags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) if ((ahc->user_discenable & devinfo->target_mask) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) if (ahc->unit >= ARRAY_SIZE(aic7xxx_tag_info)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) if (warned_user == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) printk(KERN_WARNING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) "aic7xxx: WARNING: Insufficient tag_info instances\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) "aic7xxx: for installed controllers. Using defaults\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) "aic7xxx: Please update the aic7xxx_tag_info array in\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) "aic7xxx: the aic7xxx_osm..c source file.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) warned_user++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) tags = AHC_MAX_QUEUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) adapter_tag_info_t *tag_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) tag_info = &aic7xxx_tag_info[ahc->unit];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) tags = tag_info->tag_commands[devinfo->target_offset];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) if (tags > AHC_MAX_QUEUE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) tags = AHC_MAX_QUEUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) return (tags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) * Determines the queue depth for a given device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) ahc_linux_device_queue_depth(struct scsi_device *sdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) struct ahc_devinfo devinfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) u_int tags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) struct ahc_softc *ahc = *((struct ahc_softc **)sdev->host->hostdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) ahc_compile_devinfo(&devinfo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) sdev->sdev_target->channel == 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) ? ahc->our_id : ahc->our_id_b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) sdev->sdev_target->id, sdev->lun,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) sdev->sdev_target->channel == 0 ? 'A' : 'B',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) ROLE_INITIATOR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) tags = ahc_linux_user_tagdepth(ahc, &devinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) if (tags != 0 && sdev->tagged_supported != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) ahc_platform_set_tags(ahc, sdev, &devinfo, AHC_QUEUE_TAGGED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) ahc_send_async(ahc, devinfo.channel, devinfo.target,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) devinfo.lun, AC_TRANSFER_NEG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) ahc_print_devinfo(ahc, &devinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) printk("Tagged Queuing enabled. Depth %d\n", tags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) ahc_platform_set_tags(ahc, sdev, &devinfo, AHC_QUEUE_NONE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) ahc_send_async(ahc, devinfo.channel, devinfo.target,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) devinfo.lun, AC_TRANSFER_NEG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) ahc_linux_run_command(struct ahc_softc *ahc, struct ahc_linux_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) struct scsi_cmnd *cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) struct scb *scb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) struct hardware_scb *hscb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) struct ahc_initiator_tinfo *tinfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) struct ahc_tmode_tstate *tstate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) uint16_t mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) struct scb_tailq *untagged_q = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) int nseg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) * Schedule us to run later. The only reason we are not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) * running is because the whole controller Q is frozen.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) if (ahc->platform_data->qfrozen != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) return SCSI_MLQUEUE_HOST_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) * We only allow one untagged transaction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) * per target in the initiator role unless
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) * we are storing a full busy target *lun*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) * table in SCB space.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) if (!(cmd->flags & SCMD_TAGGED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) && (ahc->features & AHC_SCB_BTT) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) int target_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) target_offset = cmd->device->id + cmd->device->channel * 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) untagged_q = &(ahc->untagged_queues[target_offset]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) if (!TAILQ_EMPTY(untagged_q))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) /* if we're already executing an untagged command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) * we're busy to another */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) return SCSI_MLQUEUE_DEVICE_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) nseg = scsi_dma_map(cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) if (nseg < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) return SCSI_MLQUEUE_HOST_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) * Get an scb to use.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) scb = ahc_get_scb(ahc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) if (!scb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) scsi_dma_unmap(cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) return SCSI_MLQUEUE_HOST_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) scb->io_ctx = cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) scb->platform_data->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) hscb = scb->hscb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) cmd->host_scribble = (char *)scb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) * Fill out basics of the HSCB.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) hscb->control = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) hscb->scsiid = BUILD_SCSIID(ahc, cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) hscb->lun = cmd->device->lun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) mask = SCB_GET_TARGET_MASK(ahc, scb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) tinfo = ahc_fetch_transinfo(ahc, SCB_GET_CHANNEL(ahc, scb),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) SCB_GET_OUR_ID(scb),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) SCB_GET_TARGET(ahc, scb), &tstate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) hscb->scsirate = tinfo->scsirate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) hscb->scsioffset = tinfo->curr.offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) if ((tstate->ultraenb & mask) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) hscb->control |= ULTRAENB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) if ((ahc->user_discenable & mask) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) hscb->control |= DISCENB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) if ((tstate->auto_negotiate & mask) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) scb->flags |= SCB_AUTO_NEGOTIATE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) scb->hscb->control |= MK_MESSAGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) if ((dev->flags & (AHC_DEV_Q_TAGGED|AHC_DEV_Q_BASIC)) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) if (dev->commands_since_idle_or_otag == AHC_OTAG_THRESH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) && (dev->flags & AHC_DEV_Q_TAGGED) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) hscb->control |= MSG_ORDERED_TASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) dev->commands_since_idle_or_otag = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) hscb->control |= MSG_SIMPLE_TASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) hscb->cdb_len = cmd->cmd_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) if (hscb->cdb_len <= 12) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) memcpy(hscb->shared_data.cdb, cmd->cmnd, hscb->cdb_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) memcpy(hscb->cdb32, cmd->cmnd, hscb->cdb_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) scb->flags |= SCB_CDB32_PTR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) scb->platform_data->xfer_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) ahc_set_residual(scb, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) ahc_set_sense_residual(scb, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) scb->sg_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) if (nseg > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) struct ahc_dma_seg *sg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) struct scatterlist *cur_seg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) /* Copy the segments into the SG list. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) sg = scb->sg_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) * The sg_count may be larger than nseg if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) * a transfer crosses a 32bit page.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) scsi_for_each_sg(cmd, cur_seg, nseg, i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) dma_addr_t addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) bus_size_t len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) int consumed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) addr = sg_dma_address(cur_seg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) len = sg_dma_len(cur_seg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521) consumed = ahc_linux_map_seg(ahc, scb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) sg, addr, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) sg += consumed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) scb->sg_count += consumed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) sg--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) sg->len |= ahc_htole32(AHC_DMA_LAST_SEG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) * Reset the sg list pointer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) scb->hscb->sgptr =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) ahc_htole32(scb->sg_list_phys | SG_FULL_RESID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) * Copy the first SG into the "current"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) * data pointer area.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) scb->hscb->dataptr = scb->sg_list->addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) scb->hscb->datacnt = scb->sg_list->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) scb->hscb->sgptr = ahc_htole32(SG_LIST_NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) scb->hscb->dataptr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) scb->hscb->datacnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) scb->sg_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) dev->openings--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) dev->active++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) dev->commands_issued++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) if ((dev->flags & AHC_DEV_PERIODIC_OTAG) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) dev->commands_since_idle_or_otag++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) scb->flags |= SCB_ACTIVE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) if (untagged_q) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) scb->flags |= SCB_UNTAGGEDQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560) ahc_queue_scb(ahc, scb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) * SCSI controller interrupt handler.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567) irqreturn_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568) ahc_linux_isr(int irq, void *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) struct ahc_softc *ahc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) u_long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) int ours;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) ahc = (struct ahc_softc *) dev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) ahc_lock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) ours = ahc_intr(ahc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) ahc_unlock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) return IRQ_RETVAL(ours);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) ahc_platform_flushwork(struct ahc_softc *ahc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) ahc_send_async(struct ahc_softc *ahc, char channel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) u_int target, u_int lun, ac_code code)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) switch (code) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) case AC_TRANSFER_NEG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) struct scsi_target *starget;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) struct ahc_initiator_tinfo *tinfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) struct ahc_tmode_tstate *tstate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) int target_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) unsigned int target_ppr_options;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) BUG_ON(target == CAM_TARGET_WILDCARD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) tinfo = ahc_fetch_transinfo(ahc, channel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) channel == 'A' ? ahc->our_id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) : ahc->our_id_b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) target, &tstate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) * Don't bother reporting results while
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) * negotiations are still pending.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) if (tinfo->curr.period != tinfo->goal.period
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) || tinfo->curr.width != tinfo->goal.width
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) || tinfo->curr.offset != tinfo->goal.offset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) || tinfo->curr.ppr_options != tinfo->goal.ppr_options)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) if (bootverbose == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) * Don't bother reporting results that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) * are identical to those last reported.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) target_offset = target;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) if (channel == 'B')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) target_offset += 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625) starget = ahc->platform_data->starget[target_offset];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626) if (starget == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) target_ppr_options =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630) (spi_dt(starget) ? MSG_EXT_PPR_DT_REQ : 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) + (spi_qas(starget) ? MSG_EXT_PPR_QAS_REQ : 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632) + (spi_iu(starget) ? MSG_EXT_PPR_IU_REQ : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) if (tinfo->curr.period == spi_period(starget)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635) && tinfo->curr.width == spi_width(starget)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) && tinfo->curr.offset == spi_offset(starget)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637) && tinfo->curr.ppr_options == target_ppr_options)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) if (bootverbose == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) spi_period(starget) = tinfo->curr.period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642) spi_width(starget) = tinfo->curr.width;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643) spi_offset(starget) = tinfo->curr.offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ ? 1 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ ? 1 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646) spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ ? 1 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647) spi_display_xfer_agreement(starget);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650) case AC_SENT_BDR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) WARN_ON(lun != CAM_LUN_WILDCARD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653) scsi_report_device_reset(ahc->platform_data->host,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654) channel - 'A', target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) case AC_BUS_RESET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) if (ahc->platform_data->host != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659) scsi_report_bus_reset(ahc->platform_data->host,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) channel - 'A');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) panic("ahc_send_async: Unexpected async event");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669) * Calls the higher level scsi done function and frees the scb.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672) ahc_done(struct ahc_softc *ahc, struct scb *scb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674) struct scsi_cmnd *cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) struct ahc_linux_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677) LIST_REMOVE(scb, pending_links);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678) if ((scb->flags & SCB_UNTAGGEDQ) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) struct scb_tailq *untagged_q;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) int target_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682) target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683) untagged_q = &(ahc->untagged_queues[target_offset]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684) TAILQ_REMOVE(untagged_q, scb, links.tqe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685) BUG_ON(!TAILQ_EMPTY(untagged_q));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) } else if ((scb->flags & SCB_ACTIVE) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) * Transactions aborted from the untagged queue may
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689) * not have been dispatched to the controller, so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690) * only check the SCB_ACTIVE flag for tagged transactions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692) printk("SCB %d done'd twice\n", scb->hscb->tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) ahc_dump_card_state(ahc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694) panic("Stopping for safety");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) cmd = scb->io_ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) dev = scb->platform_data->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698) dev->active--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699) dev->openings++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700) if ((cmd->result & (CAM_DEV_QFRZN << 16)) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) cmd->result &= ~(CAM_DEV_QFRZN << 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) dev->qfrozen--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704) ahc_linux_unmap_scb(ahc, scb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) * Guard against stale sense data.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708) * The Linux mid-layer assumes that sense
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709) * was retrieved anytime the first byte of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) * the sense buffer looks "sane".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712) cmd->sense_buffer[0] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) if (ahc_get_transaction_status(scb) == CAM_REQ_INPROG) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714) #ifdef AHC_REPORT_UNDERFLOWS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) uint32_t amount_xferred;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717) amount_xferred =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718) ahc_get_transfer_length(scb) - ahc_get_residual(scb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720) if ((scb->flags & SCB_TRANSMISSION_ERROR) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721) #ifdef AHC_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722) if ((ahc_debug & AHC_SHOW_MISC) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723) ahc_print_path(ahc, scb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724) printk("Set CAM_UNCOR_PARITY\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727) ahc_set_transaction_status(scb, CAM_UNCOR_PARITY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) #ifdef AHC_REPORT_UNDERFLOWS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) * This code is disabled by default as some
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731) * clients of the SCSI system do not properly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) * initialize the underflow parameter. This
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733) * results in spurious termination of commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734) * that complete as expected (e.g. underflow is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735) * allowed as command can return variable amounts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736) * of data.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738) } else if (amount_xferred < scb->io_ctx->underflow) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739) u_int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741) ahc_print_path(ahc, scb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742) printk("CDB:");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) for (i = 0; i < scb->io_ctx->cmd_len; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744) printk(" 0x%x", scb->io_ctx->cmnd[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745) printk("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746) ahc_print_path(ahc, scb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747) printk("Saw underflow (%ld of %ld bytes). "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748) "Treated as error\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749) ahc_get_residual(scb),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750) ahc_get_transfer_length(scb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751) ahc_set_transaction_status(scb, CAM_DATA_RUN_ERR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754) ahc_set_transaction_status(scb, CAM_REQ_CMP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756) } else if (ahc_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) ahc_linux_handle_scsi_status(ahc, cmd->device, scb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760) if (dev->openings == 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761) && ahc_get_transaction_status(scb) == CAM_REQ_CMP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762) && ahc_get_scsi_status(scb) != SCSI_STATUS_QUEUE_FULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763) dev->tag_success_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765) * Some devices deal with temporary internal resource
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766) * shortages by returning queue full. When the queue
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) * full occurrs, we throttle back. Slowly try to get
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768) * back to our previous queue depth.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770) if ((dev->openings + dev->active) < dev->maxtags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771) && dev->tag_success_count > AHC_TAG_SUCCESS_INTERVAL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772) dev->tag_success_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773) dev->openings++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776) if (dev->active == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777) dev->commands_since_idle_or_otag = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779) if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780) printk("Recovery SCB completes\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781) if (ahc_get_transaction_status(scb) == CAM_BDR_SENT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782) || ahc_get_transaction_status(scb) == CAM_REQ_ABORTED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783) ahc_set_transaction_status(scb, CAM_CMD_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785) if (ahc->platform_data->eh_done)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786) complete(ahc->platform_data->eh_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1788)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1789) ahc_free_scb(ahc, scb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1790) ahc_linux_queue_cmd_complete(ahc, cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1791) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1792)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1793) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1794) ahc_linux_handle_scsi_status(struct ahc_softc *ahc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1795) struct scsi_device *sdev, struct scb *scb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1796) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1797) struct ahc_devinfo devinfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1798) struct ahc_linux_device *dev = scsi_transport_device_data(sdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1799)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1800) ahc_compile_devinfo(&devinfo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1801) ahc->our_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1802) sdev->sdev_target->id, sdev->lun,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1803) sdev->sdev_target->channel == 0 ? 'A' : 'B',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1804) ROLE_INITIATOR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1805)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1806) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1807) * We don't currently trust the mid-layer to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1808) * properly deal with queue full or busy. So,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1809) * when one occurs, we tell the mid-layer to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1810) * unconditionally requeue the command to us
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1811) * so that we can retry it ourselves. We also
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1812) * implement our own throttling mechanism so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1813) * we don't clobber the device with too many
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1814) * commands.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1815) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1816) switch (ahc_get_scsi_status(scb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1817) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1818) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1819) case SCSI_STATUS_CHECK_COND:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1820) case SCSI_STATUS_CMD_TERMINATED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1821) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1822) struct scsi_cmnd *cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1823)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1824) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1825) * Copy sense information to the OS's cmd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1826) * structure if it is available.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1827) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1828) cmd = scb->io_ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1829) if (scb->flags & SCB_SENSE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1830) u_int sense_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1831)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1832) sense_size = min(sizeof(struct scsi_sense_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1833) - ahc_get_sense_residual(scb),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1834) (u_long)SCSI_SENSE_BUFFERSIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1835) memcpy(cmd->sense_buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1836) ahc_get_sense_buf(ahc, scb), sense_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1837) if (sense_size < SCSI_SENSE_BUFFERSIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1838) memset(&cmd->sense_buffer[sense_size], 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1839) SCSI_SENSE_BUFFERSIZE - sense_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1840) cmd->result |= (DRIVER_SENSE << 24);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1841) #ifdef AHC_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1842) if (ahc_debug & AHC_SHOW_SENSE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1843) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1844)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1845) printk("Copied %d bytes of sense data:",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1846) sense_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1847) for (i = 0; i < sense_size; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1848) if ((i & 0xF) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1849) printk("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1850) printk("0x%x ", cmd->sense_buffer[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1851) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1852) printk("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1853) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1854) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1855) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1856) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1857) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1858) case SCSI_STATUS_QUEUE_FULL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1859) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1860) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1861) * By the time the core driver has returned this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1862) * command, all other commands that were queued
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1863) * to us but not the device have been returned.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1864) * This ensures that dev->active is equal to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1865) * the number of commands actually queued to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1866) * the device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1867) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1868) dev->tag_success_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1869) if (dev->active != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1870) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1871) * Drop our opening count to the number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1872) * of commands currently outstanding.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1873) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1874) dev->openings = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1875) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1876) ahc_print_path(ahc, scb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1877) printk("Dropping tag count to %d\n", dev->active);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1878) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1879) if (dev->active == dev->tags_on_last_queuefull) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1880)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1881) dev->last_queuefull_same_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1882) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1883) * If we repeatedly see a queue full
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1884) * at the same queue depth, this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1885) * device has a fixed number of tag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1886) * slots. Lock in this tag depth
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1887) * so we stop seeing queue fulls from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1888) * this device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1889) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1890) if (dev->last_queuefull_same_count
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1891) == AHC_LOCK_TAGS_COUNT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1892) dev->maxtags = dev->active;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1893) ahc_print_path(ahc, scb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1894) printk("Locking max tag count at %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1895) dev->active);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1896) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1897) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1898) dev->tags_on_last_queuefull = dev->active;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1899) dev->last_queuefull_same_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1900) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1901) ahc_set_transaction_status(scb, CAM_REQUEUE_REQ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1902) ahc_set_scsi_status(scb, SCSI_STATUS_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1903) ahc_platform_set_tags(ahc, sdev, &devinfo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1904) (dev->flags & AHC_DEV_Q_BASIC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1905) ? AHC_QUEUE_BASIC : AHC_QUEUE_TAGGED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1906) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1907) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1908) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1909) * Drop down to a single opening, and treat this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1910) * as if the target returned BUSY SCSI status.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1911) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1912) dev->openings = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1913) ahc_set_scsi_status(scb, SCSI_STATUS_BUSY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1914) ahc_platform_set_tags(ahc, sdev, &devinfo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1915) (dev->flags & AHC_DEV_Q_BASIC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1916) ? AHC_QUEUE_BASIC : AHC_QUEUE_TAGGED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1917) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1918) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1919) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1920) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1921)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1922) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1923) ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, struct scsi_cmnd *cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1924) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1925) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1926) * Map CAM error codes into Linux Error codes. We
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1927) * avoid the conversion so that the DV code has the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1928) * full error information available when making
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1929) * state change decisions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1930) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1931) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1932) u_int new_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1933)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1934) switch (ahc_cmd_get_transaction_status(cmd)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1935) case CAM_REQ_INPROG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1936) case CAM_REQ_CMP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1937) case CAM_SCSI_STATUS_ERROR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1938) new_status = DID_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1939) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1940) case CAM_REQ_ABORTED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1941) new_status = DID_ABORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1942) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1943) case CAM_BUSY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1944) new_status = DID_BUS_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1945) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1946) case CAM_REQ_INVALID:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1947) case CAM_PATH_INVALID:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1948) new_status = DID_BAD_TARGET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1949) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1950) case CAM_SEL_TIMEOUT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1951) new_status = DID_NO_CONNECT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1952) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1953) case CAM_SCSI_BUS_RESET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1954) case CAM_BDR_SENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1955) new_status = DID_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1956) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1957) case CAM_UNCOR_PARITY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1958) new_status = DID_PARITY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1959) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1960) case CAM_CMD_TIMEOUT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1961) new_status = DID_TIME_OUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1962) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1963) case CAM_UA_ABORT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1964) case CAM_REQ_CMP_ERR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1965) case CAM_AUTOSENSE_FAIL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1966) case CAM_NO_HBA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1967) case CAM_DATA_RUN_ERR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1968) case CAM_UNEXP_BUSFREE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1969) case CAM_SEQUENCE_FAIL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1970) case CAM_CCB_LEN_ERR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1971) case CAM_PROVIDE_FAIL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1972) case CAM_REQ_TERMIO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1973) case CAM_UNREC_HBA_ERROR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1974) case CAM_REQ_TOO_BIG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1975) new_status = DID_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1976) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1977) case CAM_REQUEUE_REQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1978) new_status = DID_REQUEUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1979) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1980) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1981) /* We should never get here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1982) new_status = DID_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1983) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1984) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1985)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1986) ahc_cmd_set_transaction_status(cmd, new_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1987) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1988)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1989) cmd->scsi_done(cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1990) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1991)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1992) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1993) ahc_linux_freeze_simq(struct ahc_softc *ahc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1994) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1995) unsigned long s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1996)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1997) ahc_lock(ahc, &s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1998) ahc->platform_data->qfrozen++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1999) if (ahc->platform_data->qfrozen == 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2000) scsi_block_requests(ahc->platform_data->host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2001)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2002) /* XXX What about Twin channels? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2003) ahc_platform_abort_scbs(ahc, CAM_TARGET_WILDCARD, ALL_CHANNELS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2004) CAM_LUN_WILDCARD, SCB_LIST_NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2005) ROLE_INITIATOR, CAM_REQUEUE_REQ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2006) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2007) ahc_unlock(ahc, &s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2008) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2009)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2010) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2011) ahc_linux_release_simq(struct ahc_softc *ahc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2012) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2013) u_long s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2014) int unblock_reqs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2015)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2016) unblock_reqs = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2017) ahc_lock(ahc, &s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2018) if (ahc->platform_data->qfrozen > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2019) ahc->platform_data->qfrozen--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2020) if (ahc->platform_data->qfrozen == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2021) unblock_reqs = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2022) ahc_unlock(ahc, &s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2023) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2024) * There is still a race here. The mid-layer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2025) * should keep its own freeze count and use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2026) * a bottom half handler to run the queues
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2027) * so we can unblock with our own lock held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2028) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2029) if (unblock_reqs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2030) scsi_unblock_requests(ahc->platform_data->host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2031) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2032)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2033) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2034) ahc_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2035) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2036) struct ahc_softc *ahc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2037) struct ahc_linux_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2038) struct scb *pending_scb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2039) u_int saved_scbptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2040) u_int active_scb_index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2041) u_int last_phase;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2042) u_int saved_scsiid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2043) u_int cdb_byte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2044) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2045) int was_paused;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2046) int paused;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2047) int wait;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2048) int disconnected;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2049) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2050)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2051) pending_scb = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2052) paused = FALSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2053) wait = FALSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2054) ahc = *(struct ahc_softc **)cmd->device->host->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2056) scmd_printk(KERN_INFO, cmd, "Attempting to queue a%s message\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2057) flag == SCB_ABORT ? "n ABORT" : " TARGET RESET");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2058)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2059) printk("CDB:");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2060) for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2061) printk(" 0x%x", cmd->cmnd[cdb_byte]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2062) printk("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2063)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2064) ahc_lock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2065)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2066) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2067) * First determine if we currently own this command.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2068) * Start by searching the device queue. If not found
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2069) * there, check the pending_scb list. If not found
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2070) * at all, and the system wanted us to just abort the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2071) * command, return success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2072) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2073) dev = scsi_transport_device_data(cmd->device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2074)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2075) if (dev == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2076) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2077) * No target device for this command exists,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2078) * so we must not still own the command.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2079) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2080) printk("%s:%d:%d:%d: Is not an active device\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2081) ahc_name(ahc), cmd->device->channel, cmd->device->id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2082) (u8)cmd->device->lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2083) retval = SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2084) goto no_cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2085) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2086)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2087) if ((dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED)) == 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2088) && ahc_search_untagged_queues(ahc, cmd, cmd->device->id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2089) cmd->device->channel + 'A',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2090) (u8)cmd->device->lun,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2091) CAM_REQ_ABORTED, SEARCH_COMPLETE) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2092) printk("%s:%d:%d:%d: Command found on untagged queue\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2093) ahc_name(ahc), cmd->device->channel, cmd->device->id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2094) (u8)cmd->device->lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2095) retval = SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2096) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2097) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2098)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2099) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2100) * See if we can find a matching cmd in the pending list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2101) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2102) LIST_FOREACH(pending_scb, &ahc->pending_scbs, pending_links) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2103) if (pending_scb->io_ctx == cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2104) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2107) if (pending_scb == NULL && flag == SCB_DEVICE_RESET) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2109) /* Any SCB for this device will do for a target reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2110) LIST_FOREACH(pending_scb, &ahc->pending_scbs, pending_links) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2111) if (ahc_match_scb(ahc, pending_scb, scmd_id(cmd),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2112) scmd_channel(cmd) + 'A',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2113) CAM_LUN_WILDCARD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2114) SCB_LIST_NULL, ROLE_INITIATOR))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2115) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2119) if (pending_scb == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2120) scmd_printk(KERN_INFO, cmd, "Command not found\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2121) goto no_cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2124) if ((pending_scb->flags & SCB_RECOVERY_SCB) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2125) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2126) * We can't queue two recovery actions using the same SCB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2127) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2128) retval = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2129) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2132) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2133) * Ensure that the card doesn't do anything
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2134) * behind our back and that we didn't "just" miss
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2135) * an interrupt that would affect this cmd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2136) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2137) was_paused = ahc_is_paused(ahc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2138) ahc_pause_and_flushwork(ahc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2139) paused = TRUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2141) if ((pending_scb->flags & SCB_ACTIVE) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2142) scmd_printk(KERN_INFO, cmd, "Command already completed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2143) goto no_cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2146) printk("%s: At time of recovery, card was %spaused\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2147) ahc_name(ahc), was_paused ? "" : "not ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2148) ahc_dump_card_state(ahc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2150) disconnected = TRUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2151) if (flag == SCB_ABORT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2152) if (ahc_search_qinfifo(ahc, cmd->device->id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2153) cmd->device->channel + 'A',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2154) cmd->device->lun,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2155) pending_scb->hscb->tag,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2156) ROLE_INITIATOR, CAM_REQ_ABORTED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2157) SEARCH_COMPLETE) > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2158) printk("%s:%d:%d:%d: Cmd aborted from QINFIFO\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2159) ahc_name(ahc), cmd->device->channel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2160) cmd->device->id, (u8)cmd->device->lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2161) retval = SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2162) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2164) } else if (ahc_search_qinfifo(ahc, cmd->device->id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2165) cmd->device->channel + 'A',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2166) cmd->device->lun,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2167) pending_scb->hscb->tag,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2168) ROLE_INITIATOR, /*status*/0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2169) SEARCH_COUNT) > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2170) disconnected = FALSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2173) if (disconnected && (ahc_inb(ahc, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2174) struct scb *bus_scb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2176) bus_scb = ahc_lookup_scb(ahc, ahc_inb(ahc, SCB_TAG));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2177) if (bus_scb == pending_scb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2178) disconnected = FALSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2179) else if (flag != SCB_ABORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2180) && ahc_inb(ahc, SAVED_SCSIID) == pending_scb->hscb->scsiid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2181) && ahc_inb(ahc, SAVED_LUN) == SCB_GET_LUN(pending_scb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2182) disconnected = FALSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2185) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2186) * At this point, pending_scb is the scb associated with the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2187) * passed in command. That command is currently active on the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2188) * bus, is in the disconnected state, or we're hoping to find
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2189) * a command for the same target active on the bus to abuse to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2190) * send a BDR. Queue the appropriate message based on which of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2191) * these states we are in.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2192) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2193) last_phase = ahc_inb(ahc, LASTPHASE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2194) saved_scbptr = ahc_inb(ahc, SCBPTR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2195) active_scb_index = ahc_inb(ahc, SCB_TAG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2196) saved_scsiid = ahc_inb(ahc, SAVED_SCSIID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2197) if (last_phase != P_BUSFREE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2198) && (pending_scb->hscb->tag == active_scb_index
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2199) || (flag == SCB_DEVICE_RESET
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2200) && SCSIID_TARGET(ahc, saved_scsiid) == scmd_id(cmd)))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2202) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2203) * We're active on the bus, so assert ATN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2204) * and hope that the target responds.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2205) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2206) pending_scb = ahc_lookup_scb(ahc, active_scb_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2207) pending_scb->flags |= SCB_RECOVERY_SCB|flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2208) ahc_outb(ahc, MSG_OUT, HOST_MSG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2209) ahc_outb(ahc, SCSISIGO, last_phase|ATNO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2210) scmd_printk(KERN_INFO, cmd, "Device is active, asserting ATN\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2211) wait = TRUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2212) } else if (disconnected) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2214) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2215) * Actually re-queue this SCB in an attempt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2216) * to select the device before it reconnects.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2217) * In either case (selection or reselection),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2218) * we will now issue the approprate message
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2219) * to the timed-out device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2220) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2221) * Set the MK_MESSAGE control bit indicating
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2222) * that we desire to send a message. We
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2223) * also set the disconnected flag since
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2224) * in the paging case there is no guarantee
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2225) * that our SCB control byte matches the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2226) * version on the card. We don't want the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2227) * sequencer to abort the command thinking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2228) * an unsolicited reselection occurred.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2229) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2230) pending_scb->hscb->control |= MK_MESSAGE|DISCONNECTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2231) pending_scb->flags |= SCB_RECOVERY_SCB|flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2233) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2234) * Remove any cached copy of this SCB in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2235) * disconnected list in preparation for the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2236) * queuing of our abort SCB. We use the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2237) * same element in the SCB, SCB_NEXT, for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2238) * both the qinfifo and the disconnected list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2239) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2240) ahc_search_disc_list(ahc, cmd->device->id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2241) cmd->device->channel + 'A',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2242) cmd->device->lun, pending_scb->hscb->tag,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2243) /*stop_on_first*/TRUE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2244) /*remove*/TRUE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2245) /*save_state*/FALSE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2247) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2248) * In the non-paging case, the sequencer will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2249) * never re-reference the in-core SCB.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2250) * To make sure we are notified during
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2251) * reselection, set the MK_MESSAGE flag in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2252) * the card's copy of the SCB.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2253) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2254) if ((ahc->flags & AHC_PAGESCBS) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2255) ahc_outb(ahc, SCBPTR, pending_scb->hscb->tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2256) ahc_outb(ahc, SCB_CONTROL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2257) ahc_inb(ahc, SCB_CONTROL)|MK_MESSAGE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2258) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2260) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2261) * Clear out any entries in the QINFIFO first
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2262) * so we are the next SCB for this target
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2263) * to run.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2264) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2265) ahc_search_qinfifo(ahc, cmd->device->id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2266) cmd->device->channel + 'A',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2267) cmd->device->lun, SCB_LIST_NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2268) ROLE_INITIATOR, CAM_REQUEUE_REQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2269) SEARCH_COMPLETE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2270) ahc_qinfifo_requeue_tail(ahc, pending_scb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2271) ahc_outb(ahc, SCBPTR, saved_scbptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2272) ahc_print_path(ahc, pending_scb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2273) printk("Device is disconnected, re-queuing SCB\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2274) wait = TRUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2275) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2276) scmd_printk(KERN_INFO, cmd, "Unable to deliver message\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2277) retval = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2278) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2279) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2281) no_cmd:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2282) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2283) * Our assumption is that if we don't have the command, no
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2284) * recovery action was required, so we return success. Again,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2285) * the semantics of the mid-layer recovery engine are not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2286) * well defined, so this may change in time.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2287) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2288) retval = SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2289) done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2290) if (paused)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2291) ahc_unpause(ahc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2292) if (wait) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2293) DECLARE_COMPLETION_ONSTACK(done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2295) ahc->platform_data->eh_done = &done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2296) ahc_unlock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2298) printk("Recovery code sleeping\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2299) if (!wait_for_completion_timeout(&done, 5 * HZ)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2300) ahc_lock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2301) ahc->platform_data->eh_done = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2302) ahc_unlock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2304) printk("Timer Expired\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2305) retval = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2306) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2307) printk("Recovery code awake\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2308) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2309) ahc_unlock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2310) return (retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2311) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2313) static void ahc_linux_set_width(struct scsi_target *starget, int width)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2314) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2315) struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2316) struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2317) struct ahc_devinfo devinfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2318) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2320) ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2321) starget->channel + 'A', ROLE_INITIATOR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2322) ahc_lock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2323) ahc_set_width(ahc, &devinfo, width, AHC_TRANS_GOAL, FALSE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2324) ahc_unlock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2325) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2327) static void ahc_linux_set_period(struct scsi_target *starget, int period)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2328) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2329) struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2330) struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2331) struct ahc_tmode_tstate *tstate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2332) struct ahc_initiator_tinfo *tinfo
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2333) = ahc_fetch_transinfo(ahc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2334) starget->channel + 'A',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2335) shost->this_id, starget->id, &tstate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2336) struct ahc_devinfo devinfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2337) unsigned int ppr_options = tinfo->goal.ppr_options;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2338) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2339) unsigned long offset = tinfo->goal.offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2340) const struct ahc_syncrate *syncrate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2342) if (offset == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2343) offset = MAX_OFFSET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2345) if (period < 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2346) period = 9; /* 12.5ns is our minimum */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2347) if (period == 9) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2348) if (spi_max_width(starget))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2349) ppr_options |= MSG_EXT_PPR_DT_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2350) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2351) /* need wide for DT and need DT for 12.5 ns */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2352) period = 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2355) ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2356) starget->channel + 'A', ROLE_INITIATOR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2358) /* all PPR requests apart from QAS require wide transfers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2359) if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2360) if (spi_width(starget) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2361) ppr_options &= MSG_EXT_PPR_QAS_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2362) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2364) syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2365) ahc_lock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2366) ahc_set_syncrate(ahc, &devinfo, syncrate, period, offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2367) ppr_options, AHC_TRANS_GOAL, FALSE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2368) ahc_unlock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2369) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2371) static void ahc_linux_set_offset(struct scsi_target *starget, int offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2372) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2373) struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2374) struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2375) struct ahc_tmode_tstate *tstate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2376) struct ahc_initiator_tinfo *tinfo
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2377) = ahc_fetch_transinfo(ahc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2378) starget->channel + 'A',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2379) shost->this_id, starget->id, &tstate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2380) struct ahc_devinfo devinfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2381) unsigned int ppr_options = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2382) unsigned int period = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2383) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2384) const struct ahc_syncrate *syncrate = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2386) ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2387) starget->channel + 'A', ROLE_INITIATOR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2388) if (offset != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2389) syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2390) period = tinfo->goal.period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2391) ppr_options = tinfo->goal.ppr_options;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2392) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2393) ahc_lock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2394) ahc_set_syncrate(ahc, &devinfo, syncrate, period, offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2395) ppr_options, AHC_TRANS_GOAL, FALSE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2396) ahc_unlock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2397) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2399) static void ahc_linux_set_dt(struct scsi_target *starget, int dt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2400) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2401) struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2402) struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2403) struct ahc_tmode_tstate *tstate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2404) struct ahc_initiator_tinfo *tinfo
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2405) = ahc_fetch_transinfo(ahc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2406) starget->channel + 'A',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2407) shost->this_id, starget->id, &tstate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2408) struct ahc_devinfo devinfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2409) unsigned int ppr_options = tinfo->goal.ppr_options
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2410) & ~MSG_EXT_PPR_DT_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2411) unsigned int period = tinfo->goal.period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2412) unsigned int width = tinfo->goal.width;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2413) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2414) const struct ahc_syncrate *syncrate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2416) if (dt && spi_max_width(starget)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2417) ppr_options |= MSG_EXT_PPR_DT_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2418) if (!width)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2419) ahc_linux_set_width(starget, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2420) } else if (period == 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2421) period = 10; /* if resetting DT, period must be >= 25ns */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2423) ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2424) starget->channel + 'A', ROLE_INITIATOR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2425) syncrate = ahc_find_syncrate(ahc, &period, &ppr_options,AHC_SYNCRATE_DT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2426) ahc_lock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2427) ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->goal.offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2428) ppr_options, AHC_TRANS_GOAL, FALSE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2429) ahc_unlock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2430) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2432) #if 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2433) /* FIXME: This code claims to support IU and QAS. However, the actual
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2434) * sequencer code and aic7xxx_core have no support for these parameters and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2435) * will get into a bad state if they're negotiated. Do not enable this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2436) * unless you know what you're doing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2437) static void ahc_linux_set_qas(struct scsi_target *starget, int qas)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2438) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2439) struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2440) struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2441) struct ahc_tmode_tstate *tstate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2442) struct ahc_initiator_tinfo *tinfo
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2443) = ahc_fetch_transinfo(ahc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2444) starget->channel + 'A',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2445) shost->this_id, starget->id, &tstate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2446) struct ahc_devinfo devinfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2447) unsigned int ppr_options = tinfo->goal.ppr_options
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2448) & ~MSG_EXT_PPR_QAS_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2449) unsigned int period = tinfo->goal.period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2450) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2451) struct ahc_syncrate *syncrate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2453) if (qas)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2454) ppr_options |= MSG_EXT_PPR_QAS_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2456) ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2457) starget->channel + 'A', ROLE_INITIATOR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2458) syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2459) ahc_lock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2460) ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->goal.offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2461) ppr_options, AHC_TRANS_GOAL, FALSE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2462) ahc_unlock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2463) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2465) static void ahc_linux_set_iu(struct scsi_target *starget, int iu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2466) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2467) struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2468) struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2469) struct ahc_tmode_tstate *tstate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2470) struct ahc_initiator_tinfo *tinfo
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2471) = ahc_fetch_transinfo(ahc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2472) starget->channel + 'A',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2473) shost->this_id, starget->id, &tstate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2474) struct ahc_devinfo devinfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2475) unsigned int ppr_options = tinfo->goal.ppr_options
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2476) & ~MSG_EXT_PPR_IU_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2477) unsigned int period = tinfo->goal.period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2478) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2479) struct ahc_syncrate *syncrate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2481) if (iu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2482) ppr_options |= MSG_EXT_PPR_IU_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2484) ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2485) starget->channel + 'A', ROLE_INITIATOR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2486) syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2487) ahc_lock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2488) ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->goal.offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2489) ppr_options, AHC_TRANS_GOAL, FALSE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2490) ahc_unlock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2491) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2492) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2494) static void ahc_linux_get_signalling(struct Scsi_Host *shost)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2495) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2496) struct ahc_softc *ahc = *(struct ahc_softc **)shost->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2497) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2498) u8 mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2500) if (!(ahc->features & AHC_ULTRA2)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2501) /* non-LVD chipset, may not have SBLKCTL reg */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2502) spi_signalling(shost) =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2503) ahc->features & AHC_HVD ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2504) SPI_SIGNAL_HVD :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2505) SPI_SIGNAL_SE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2506) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2507) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2509) ahc_lock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2510) ahc_pause(ahc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2511) mode = ahc_inb(ahc, SBLKCTL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2512) ahc_unpause(ahc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2513) ahc_unlock(ahc, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2515) if (mode & ENAB40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2516) spi_signalling(shost) = SPI_SIGNAL_LVD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2517) else if (mode & ENAB20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2518) spi_signalling(shost) = SPI_SIGNAL_SE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2519) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2520) spi_signalling(shost) = SPI_SIGNAL_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2521) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2523) static struct spi_function_template ahc_linux_transport_functions = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2524) .set_offset = ahc_linux_set_offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2525) .show_offset = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2526) .set_period = ahc_linux_set_period,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2527) .show_period = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2528) .set_width = ahc_linux_set_width,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2529) .show_width = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2530) .set_dt = ahc_linux_set_dt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2531) .show_dt = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2532) #if 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2533) .set_iu = ahc_linux_set_iu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2534) .show_iu = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2535) .set_qas = ahc_linux_set_qas,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2536) .show_qas = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2537) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2538) .get_signalling = ahc_linux_get_signalling,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2539) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2543) static int __init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2544) ahc_linux_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2545) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2546) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2547) * If we've been passed any parameters, process them now.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2548) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2549) if (aic7xxx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2550) aic7xxx_setup(aic7xxx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2552) ahc_linux_transport_template =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2553) spi_attach_transport(&ahc_linux_transport_functions);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2554) if (!ahc_linux_transport_template)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2555) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2557) scsi_transport_reserve_device(ahc_linux_transport_template,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2558) sizeof(struct ahc_linux_device));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2560) ahc_linux_pci_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2561) ahc_linux_eisa_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2562) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2563) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2565) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2566) ahc_linux_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2567) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2568) ahc_linux_pci_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2569) ahc_linux_eisa_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2570) spi_release_transport(ahc_linux_transport_template);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2571) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2573) module_init(ahc_linux_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2574) module_exit(ahc_linux_exit);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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