216 lines
5.9 KiB
C
216 lines
5.9 KiB
C
/*
|
|
* Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family
|
|
* of PCI-SCSI IO processors.
|
|
*
|
|
* Copyright (C) 1999-2001 Gerard Roudier <groudier@free.fr>
|
|
*
|
|
* This driver is derived from the Linux sym53c8xx driver.
|
|
* Copyright (C) 1998-2000 Gerard Roudier
|
|
*
|
|
* The sym53c8xx driver is derived from the ncr53c8xx driver that had been
|
|
* a port of the FreeBSD ncr driver to Linux-1.2.13.
|
|
*
|
|
* The original ncr driver has been written for 386bsd and FreeBSD by
|
|
* Wolfgang Stanglmeier <wolf@cologne.de>
|
|
* Stefan Esser <se@mi.Uni-Koeln.de>
|
|
* Copyright (C) 1994 Wolfgang Stanglmeier
|
|
*
|
|
* Other major contributions:
|
|
*
|
|
* NVRAM detection and reading.
|
|
* Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
|
|
*
|
|
*-----------------------------------------------------------------------------
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifndef SYM53C8XX_H
|
|
#define SYM53C8XX_H
|
|
|
|
|
|
/*
|
|
* DMA addressing mode.
|
|
*
|
|
* 0 : 32 bit addressing for all chips.
|
|
* 1 : 40 bit addressing when supported by chip.
|
|
* 2 : 64 bit addressing when supported by chip,
|
|
* limited to 16 segments of 4 GB -> 64 GB max.
|
|
*/
|
|
#define SYM_CONF_DMA_ADDRESSING_MODE CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE
|
|
|
|
/*
|
|
* NVRAM support.
|
|
*/
|
|
#if 1
|
|
#define SYM_CONF_NVRAM_SUPPORT (1)
|
|
#endif
|
|
|
|
/*
|
|
* These options are not tunable from 'make config'
|
|
*/
|
|
#if 1
|
|
#define SYM_LINUX_PROC_INFO_SUPPORT
|
|
#define SYM_LINUX_USER_COMMAND_SUPPORT
|
|
#define SYM_LINUX_USER_INFO_SUPPORT
|
|
#define SYM_LINUX_DEBUG_CONTROL_SUPPORT
|
|
#endif
|
|
|
|
/*
|
|
* Also handle old NCR chips if not (0).
|
|
*/
|
|
#define SYM_CONF_GENERIC_SUPPORT (1)
|
|
|
|
/*
|
|
* Allow tags from 2 to 256, default 8
|
|
*/
|
|
#ifndef CONFIG_SCSI_SYM53C8XX_MAX_TAGS
|
|
#define CONFIG_SCSI_SYM53C8XX_MAX_TAGS (8)
|
|
#endif
|
|
|
|
#if CONFIG_SCSI_SYM53C8XX_MAX_TAGS < 2
|
|
#define SYM_CONF_MAX_TAG (2)
|
|
#elif CONFIG_SCSI_SYM53C8XX_MAX_TAGS > 256
|
|
#define SYM_CONF_MAX_TAG (256)
|
|
#else
|
|
#define SYM_CONF_MAX_TAG CONFIG_SCSI_SYM53C8XX_MAX_TAGS
|
|
#endif
|
|
|
|
#ifndef CONFIG_SCSI_SYM53C8XX_DEFAULT_TAGS
|
|
#define CONFIG_SCSI_SYM53C8XX_DEFAULT_TAGS SYM_CONF_MAX_TAG
|
|
#endif
|
|
|
|
/*
|
|
* Anyway, we configure the driver for at least 64 tags per LUN. :)
|
|
*/
|
|
#if SYM_CONF_MAX_TAG <= 64
|
|
#define SYM_CONF_MAX_TAG_ORDER (6)
|
|
#elif SYM_CONF_MAX_TAG <= 128
|
|
#define SYM_CONF_MAX_TAG_ORDER (7)
|
|
#else
|
|
#define SYM_CONF_MAX_TAG_ORDER (8)
|
|
#endif
|
|
|
|
/*
|
|
* Max number of SG entries.
|
|
*/
|
|
#define SYM_CONF_MAX_SG (96)
|
|
|
|
/*
|
|
* Driver setup structure.
|
|
*
|
|
* This structure is initialized from linux config options.
|
|
* It can be overridden at boot-up by the boot command line.
|
|
*/
|
|
struct sym_driver_setup {
|
|
u_short max_tag;
|
|
u_char burst_order;
|
|
u_char scsi_led;
|
|
u_char scsi_diff;
|
|
u_char irq_mode;
|
|
u_char scsi_bus_check;
|
|
u_char host_id;
|
|
|
|
u_char verbose;
|
|
u_char settle_delay;
|
|
u_char use_nvram;
|
|
u_long excludes[8];
|
|
};
|
|
|
|
#define SYM_SETUP_MAX_TAG sym_driver_setup.max_tag
|
|
#define SYM_SETUP_BURST_ORDER sym_driver_setup.burst_order
|
|
#define SYM_SETUP_SCSI_LED sym_driver_setup.scsi_led
|
|
#define SYM_SETUP_SCSI_DIFF sym_driver_setup.scsi_diff
|
|
#define SYM_SETUP_IRQ_MODE sym_driver_setup.irq_mode
|
|
#define SYM_SETUP_SCSI_BUS_CHECK sym_driver_setup.scsi_bus_check
|
|
#define SYM_SETUP_HOST_ID sym_driver_setup.host_id
|
|
#define boot_verbose sym_driver_setup.verbose
|
|
|
|
/*
|
|
* Initial setup.
|
|
*
|
|
* Can be overriden at startup by a command line.
|
|
*/
|
|
#define SYM_LINUX_DRIVER_SETUP { \
|
|
.max_tag = CONFIG_SCSI_SYM53C8XX_DEFAULT_TAGS, \
|
|
.burst_order = 7, \
|
|
.scsi_led = 1, \
|
|
.scsi_diff = 1, \
|
|
.irq_mode = 0, \
|
|
.scsi_bus_check = 1, \
|
|
.host_id = 7, \
|
|
.verbose = 0, \
|
|
.settle_delay = 3, \
|
|
.use_nvram = 1, \
|
|
}
|
|
|
|
extern struct sym_driver_setup sym_driver_setup;
|
|
extern unsigned int sym_debug_flags;
|
|
#define DEBUG_FLAGS sym_debug_flags
|
|
|
|
/*
|
|
* Max number of targets.
|
|
* Maximum is 16 and you are advised not to change this value.
|
|
*/
|
|
#ifndef SYM_CONF_MAX_TARGET
|
|
#define SYM_CONF_MAX_TARGET (16)
|
|
#endif
|
|
|
|
/*
|
|
* Max number of logical units.
|
|
* SPI-2 allows up to 64 logical units, but in real life, target
|
|
* that implements more that 7 logical units are pretty rare.
|
|
* Anyway, the cost of accepting up to 64 logical unit is low in
|
|
* this driver, thus going with the maximum is acceptable.
|
|
*/
|
|
#ifndef SYM_CONF_MAX_LUN
|
|
#define SYM_CONF_MAX_LUN (64)
|
|
#endif
|
|
|
|
/*
|
|
* Max number of IO control blocks queued to the controller.
|
|
* Each entry needs 8 bytes and the queues are allocated contiguously.
|
|
* Since we donnot want to allocate more than a page, the theorical
|
|
* maximum is PAGE_SIZE/8. For safety, we announce a bit less to the
|
|
* access method. :)
|
|
* When not supplied, as it is suggested, the driver compute some
|
|
* good value for this parameter.
|
|
*/
|
|
/* #define SYM_CONF_MAX_START (PAGE_SIZE/8 - 16) */
|
|
|
|
/*
|
|
* Support for Immediate Arbitration.
|
|
* Not advised.
|
|
*/
|
|
/* #define SYM_CONF_IARB_SUPPORT */
|
|
|
|
/*
|
|
* Only relevant if IARB support configured.
|
|
* - Max number of successive settings of IARB hints.
|
|
* - Set IARB on arbitration lost.
|
|
*/
|
|
#define SYM_CONF_IARB_MAX 3
|
|
#define SYM_CONF_SET_IARB_ON_ARB_LOST 1
|
|
|
|
/*
|
|
* Returning wrong residuals may make problems.
|
|
* When zero, this define tells the driver to
|
|
* always return 0 as transfer residual.
|
|
* Btw, all my testings of residuals have succeeded.
|
|
*/
|
|
#define SYM_SETUP_RESIDUAL_SUPPORT 1
|
|
|
|
#endif /* SYM53C8XX_H */
|