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ncr53c8xx.h
1329 lines (1135 loc) · 40 KB
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ncr53c8xx.h
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/******************************************************************************
** Device driver for the PCI-SCSI NCR538XX controller family.
**
** Copyright (C) 1994 Wolfgang Stanglmeier
** Copyright (C) 1998-2001 Gerard Roudier <groudier@free.fr>
**
** 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., 675 Mass Ave, Cambridge, MA 02139, USA.
**
**-----------------------------------------------------------------------------
**
** This driver has been ported to Linux from the FreeBSD NCR53C8XX driver
** and is currently maintained by
**
** Gerard Roudier <groudier@free.fr>
**
** Being given that this driver originates from the FreeBSD version, and
** in order to keep synergy on both, any suggested enhancements and corrections
** received on Linux are automatically a potential candidate for the FreeBSD
** version.
**
** The original driver has been written for 386bsd and FreeBSD by
** Wolfgang Stanglmeier <wolf@cologne.de>
** Stefan Esser <se@mi.Uni-Koeln.de>
**
** And has been ported to NetBSD by
** Charles M. Hannum <mycroft@gnu.ai.mit.edu>
**
** NVRAM detection and reading.
** Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
**
** Added support for MIPS big endian systems.
** Carsten Langgaard, carstenl@mips.com
** Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
**
** Added support for HP PARISC big endian systems.
** Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
**
*******************************************************************************
*/
#ifndef NCR53C8XX_H
#define NCR53C8XX_H
#include <scsi/scsi_host.h>
/*
** If you want a driver as small as possible, donnot define the
** following options.
*/
#define SCSI_NCR_BOOT_COMMAND_LINE_SUPPORT
#define SCSI_NCR_DEBUG_INFO_SUPPORT
/*
** To disable integrity checking, do not define the
** following option.
*/
#ifdef CONFIG_SCSI_NCR53C8XX_INTEGRITY_CHECK
# define SCSI_NCR_ENABLE_INTEGRITY_CHECK
#endif
/* ---------------------------------------------------------------------
** Take into account kernel configured parameters.
** Most of these options can be overridden at startup by a command line.
** ---------------------------------------------------------------------
*/
/*
* For Ultra2 and Ultra3 SCSI support option, use special features.
*
* Value (default) means:
* bit 0 : all features enabled, except:
* bit 1 : PCI Write And Invalidate.
* bit 2 : Data Phase Mismatch handling from SCRIPTS.
*
* Use boot options ncr53c8xx=specf:1 if you want all chip features to be
* enabled by the driver.
*/
#define SCSI_NCR_SETUP_SPECIAL_FEATURES (3)
#define SCSI_NCR_MAX_SYNC (80)
/*
* Allow tags from 2 to 256, default 8
*/
#ifdef CONFIG_SCSI_NCR53C8XX_MAX_TAGS
#if CONFIG_SCSI_NCR53C8XX_MAX_TAGS < 2
#define SCSI_NCR_MAX_TAGS (2)
#elif CONFIG_SCSI_NCR53C8XX_MAX_TAGS > 256
#define SCSI_NCR_MAX_TAGS (256)
#else
#define SCSI_NCR_MAX_TAGS CONFIG_SCSI_NCR53C8XX_MAX_TAGS
#endif
#else
#define SCSI_NCR_MAX_TAGS (8)
#endif
/*
* Allow tagged command queuing support if configured with default number
* of tags set to max (see above).
*/
#ifdef CONFIG_SCSI_NCR53C8XX_DEFAULT_TAGS
#define SCSI_NCR_SETUP_DEFAULT_TAGS CONFIG_SCSI_NCR53C8XX_DEFAULT_TAGS
#elif defined CONFIG_SCSI_NCR53C8XX_TAGGED_QUEUE
#define SCSI_NCR_SETUP_DEFAULT_TAGS SCSI_NCR_MAX_TAGS
#else
#define SCSI_NCR_SETUP_DEFAULT_TAGS (0)
#endif
/*
* Immediate arbitration
*/
#if defined(CONFIG_SCSI_NCR53C8XX_IARB)
#define SCSI_NCR_IARB_SUPPORT
#endif
/*
* Sync transfer frequency at startup.
* Allow from 5Mhz to 80Mhz default 20 Mhz.
*/
#ifndef CONFIG_SCSI_NCR53C8XX_SYNC
#define CONFIG_SCSI_NCR53C8XX_SYNC (20)
#elif CONFIG_SCSI_NCR53C8XX_SYNC > SCSI_NCR_MAX_SYNC
#undef CONFIG_SCSI_NCR53C8XX_SYNC
#define CONFIG_SCSI_NCR53C8XX_SYNC SCSI_NCR_MAX_SYNC
#endif
#if CONFIG_SCSI_NCR53C8XX_SYNC == 0
#define SCSI_NCR_SETUP_DEFAULT_SYNC (255)
#elif CONFIG_SCSI_NCR53C8XX_SYNC <= 5
#define SCSI_NCR_SETUP_DEFAULT_SYNC (50)
#elif CONFIG_SCSI_NCR53C8XX_SYNC <= 20
#define SCSI_NCR_SETUP_DEFAULT_SYNC (250/(CONFIG_SCSI_NCR53C8XX_SYNC))
#elif CONFIG_SCSI_NCR53C8XX_SYNC <= 33
#define SCSI_NCR_SETUP_DEFAULT_SYNC (11)
#elif CONFIG_SCSI_NCR53C8XX_SYNC <= 40
#define SCSI_NCR_SETUP_DEFAULT_SYNC (10)
#else
#define SCSI_NCR_SETUP_DEFAULT_SYNC (9)
#endif
/*
* Disallow disconnections at boot-up
*/
#ifdef CONFIG_SCSI_NCR53C8XX_NO_DISCONNECT
#define SCSI_NCR_SETUP_DISCONNECTION (0)
#else
#define SCSI_NCR_SETUP_DISCONNECTION (1)
#endif
/*
* Force synchronous negotiation for all targets
*/
#ifdef CONFIG_SCSI_NCR53C8XX_FORCE_SYNC_NEGO
#define SCSI_NCR_SETUP_FORCE_SYNC_NEGO (1)
#else
#define SCSI_NCR_SETUP_FORCE_SYNC_NEGO (0)
#endif
/*
* Disable master parity checking (flawed hardwares need that)
*/
#ifdef CONFIG_SCSI_NCR53C8XX_DISABLE_MPARITY_CHECK
#define SCSI_NCR_SETUP_MASTER_PARITY (0)
#else
#define SCSI_NCR_SETUP_MASTER_PARITY (1)
#endif
/*
* Disable scsi parity checking (flawed devices may need that)
*/
#ifdef CONFIG_SCSI_NCR53C8XX_DISABLE_PARITY_CHECK
#define SCSI_NCR_SETUP_SCSI_PARITY (0)
#else
#define SCSI_NCR_SETUP_SCSI_PARITY (1)
#endif
/*
* Settle time after reset at boot-up
*/
#define SCSI_NCR_SETUP_SETTLE_TIME (2)
/*
** Bridge quirks work-around option defaulted to 1.
*/
#ifndef SCSI_NCR_PCIQ_WORK_AROUND_OPT
#define SCSI_NCR_PCIQ_WORK_AROUND_OPT 1
#endif
/*
** Work-around common bridge misbehaviour.
**
** - Do not flush posted writes in the opposite
** direction on read.
** - May reorder DMA writes to memory.
**
** This option should not affect performances
** significantly, so it is the default.
*/
#if SCSI_NCR_PCIQ_WORK_AROUND_OPT == 1
#define SCSI_NCR_PCIQ_MAY_NOT_FLUSH_PW_UPSTREAM
#define SCSI_NCR_PCIQ_MAY_REORDER_WRITES
#define SCSI_NCR_PCIQ_MAY_MISS_COMPLETIONS
/*
** Same as option 1, but also deal with
** misconfigured interrupts.
**
** - Edge triggered instead of level sensitive.
** - No interrupt line connected.
** - IRQ number misconfigured.
**
** If no interrupt is delivered, the driver will
** catch the interrupt conditions 10 times per
** second. No need to say that this option is
** not recommended.
*/
#elif SCSI_NCR_PCIQ_WORK_AROUND_OPT == 2
#define SCSI_NCR_PCIQ_MAY_NOT_FLUSH_PW_UPSTREAM
#define SCSI_NCR_PCIQ_MAY_REORDER_WRITES
#define SCSI_NCR_PCIQ_MAY_MISS_COMPLETIONS
#define SCSI_NCR_PCIQ_BROKEN_INTR
/*
** Some bridge designers decided to flush
** everything prior to deliver the interrupt.
** This option tries to deal with such a
** behaviour.
*/
#elif SCSI_NCR_PCIQ_WORK_AROUND_OPT == 3
#define SCSI_NCR_PCIQ_SYNC_ON_INTR
#endif
/*
** Other parameters not configurable with "make config"
** Avoid to change these constants, unless you know what you are doing.
*/
#define SCSI_NCR_ALWAYS_SIMPLE_TAG
#define SCSI_NCR_MAX_SCATTER (127)
#define SCSI_NCR_MAX_TARGET (16)
/*
** Compute some desirable value for CAN_QUEUE
** and CMD_PER_LUN.
** The driver will use lower values if these
** ones appear to be too large.
*/
#define SCSI_NCR_CAN_QUEUE (8*SCSI_NCR_MAX_TAGS + 2*SCSI_NCR_MAX_TARGET)
#define SCSI_NCR_CMD_PER_LUN (SCSI_NCR_MAX_TAGS)
#define SCSI_NCR_SG_TABLESIZE (SCSI_NCR_MAX_SCATTER)
#define SCSI_NCR_TIMER_INTERVAL (HZ)
#if 1 /* defined CONFIG_SCSI_MULTI_LUN */
#define SCSI_NCR_MAX_LUN (16)
#else
#define SCSI_NCR_MAX_LUN (1)
#endif
/*
* IO functions definition for big/little endian CPU support.
* For now, the NCR is only supported in little endian addressing mode,
*/
#ifdef __BIG_ENDIAN
#define inw_l2b inw
#define inl_l2b inl
#define outw_b2l outw
#define outl_b2l outl
#define readb_raw readb
#define writeb_raw writeb
#if defined(SCSI_NCR_BIG_ENDIAN)
#define readw_l2b __raw_readw
#define readl_l2b __raw_readl
#define writew_b2l __raw_writew
#define writel_b2l __raw_writel
#define readw_raw __raw_readw
#define readl_raw __raw_readl
#define writew_raw __raw_writew
#define writel_raw __raw_writel
#else /* Other big-endian */
#define readw_l2b readw
#define readl_l2b readl
#define writew_b2l writew
#define writel_b2l writel
#define readw_raw readw
#define readl_raw readl
#define writew_raw writew
#define writel_raw writel
#endif
#else /* little endian */
#define inw_raw inw
#define inl_raw inl
#define outw_raw outw
#define outl_raw outl
#define readb_raw readb
#define readw_raw readw
#define readl_raw readl
#define writeb_raw writeb
#define writew_raw writew
#define writel_raw writel
#endif
#if !defined(__hppa__) && !defined(__mips__)
#ifdef SCSI_NCR_BIG_ENDIAN
#error "The NCR in BIG ENDIAN addressing mode is not (yet) supported"
#endif
#endif
#define MEMORY_BARRIER() mb()
/*
* If the NCR uses big endian addressing mode over the
* PCI, actual io register addresses for byte and word
* accesses must be changed according to lane routing.
* Btw, ncr_offb() and ncr_offw() macros only apply to
* constants and so donnot generate bloated code.
*/
#if defined(SCSI_NCR_BIG_ENDIAN)
#define ncr_offb(o) (((o)&~3)+((~((o)&3))&3))
#define ncr_offw(o) (((o)&~3)+((~((o)&3))&2))
#else
#define ncr_offb(o) (o)
#define ncr_offw(o) (o)
#endif
/*
* If the CPU and the NCR use same endian-ness addressing,
* no byte reordering is needed for script patching.
* Macro cpu_to_scr() is to be used for script patching.
* Macro scr_to_cpu() is to be used for getting a DWORD
* from the script.
*/
#if defined(__BIG_ENDIAN) && !defined(SCSI_NCR_BIG_ENDIAN)
#define cpu_to_scr(dw) cpu_to_le32(dw)
#define scr_to_cpu(dw) le32_to_cpu(dw)
#elif defined(__LITTLE_ENDIAN) && defined(SCSI_NCR_BIG_ENDIAN)
#define cpu_to_scr(dw) cpu_to_be32(dw)
#define scr_to_cpu(dw) be32_to_cpu(dw)
#else
#define cpu_to_scr(dw) (dw)
#define scr_to_cpu(dw) (dw)
#endif
/*
* Access to the controller chip.
*
* If the CPU and the NCR use same endian-ness addressing,
* no byte reordering is needed for accessing chip io
* registers. Functions suffixed by '_raw' are assumed
* to access the chip over the PCI without doing byte
* reordering. Functions suffixed by '_l2b' are
* assumed to perform little-endian to big-endian byte
* reordering, those suffixed by '_b2l' blah, blah,
* blah, ...
*/
/*
* MEMORY mapped IO input / output
*/
#define INB_OFF(o) readb_raw((char __iomem *)np->reg + ncr_offb(o))
#define OUTB_OFF(o, val) writeb_raw((val), (char __iomem *)np->reg + ncr_offb(o))
#if defined(__BIG_ENDIAN) && !defined(SCSI_NCR_BIG_ENDIAN)
#define INW_OFF(o) readw_l2b((char __iomem *)np->reg + ncr_offw(o))
#define INL_OFF(o) readl_l2b((char __iomem *)np->reg + (o))
#define OUTW_OFF(o, val) writew_b2l((val), (char __iomem *)np->reg + ncr_offw(o))
#define OUTL_OFF(o, val) writel_b2l((val), (char __iomem *)np->reg + (o))
#elif defined(__LITTLE_ENDIAN) && defined(SCSI_NCR_BIG_ENDIAN)
#define INW_OFF(o) readw_b2l((char __iomem *)np->reg + ncr_offw(o))
#define INL_OFF(o) readl_b2l((char __iomem *)np->reg + (o))
#define OUTW_OFF(o, val) writew_l2b((val), (char __iomem *)np->reg + ncr_offw(o))
#define OUTL_OFF(o, val) writel_l2b((val), (char __iomem *)np->reg + (o))
#else
#ifdef CONFIG_SCSI_NCR53C8XX_NO_WORD_TRANSFERS
/* Only 8 or 32 bit transfers allowed */
#define INW_OFF(o) (readb((char __iomem *)np->reg + ncr_offw(o)) << 8 | readb((char __iomem *)np->reg + ncr_offw(o) + 1))
#else
#define INW_OFF(o) readw_raw((char __iomem *)np->reg + ncr_offw(o))
#endif
#define INL_OFF(o) readl_raw((char __iomem *)np->reg + (o))
#ifdef CONFIG_SCSI_NCR53C8XX_NO_WORD_TRANSFERS
/* Only 8 or 32 bit transfers allowed */
#define OUTW_OFF(o, val) do { writeb((char)((val) >> 8), (char __iomem *)np->reg + ncr_offw(o)); writeb((char)(val), (char __iomem *)np->reg + ncr_offw(o) + 1); } while (0)
#else
#define OUTW_OFF(o, val) writew_raw((val), (char __iomem *)np->reg + ncr_offw(o))
#endif
#define OUTL_OFF(o, val) writel_raw((val), (char __iomem *)np->reg + (o))
#endif
#define INB(r) INB_OFF (offsetof(struct ncr_reg,r))
#define INW(r) INW_OFF (offsetof(struct ncr_reg,r))
#define INL(r) INL_OFF (offsetof(struct ncr_reg,r))
#define OUTB(r, val) OUTB_OFF (offsetof(struct ncr_reg,r), (val))
#define OUTW(r, val) OUTW_OFF (offsetof(struct ncr_reg,r), (val))
#define OUTL(r, val) OUTL_OFF (offsetof(struct ncr_reg,r), (val))
/*
* Set bit field ON, OFF
*/
#define OUTONB(r, m) OUTB(r, INB(r) | (m))
#define OUTOFFB(r, m) OUTB(r, INB(r) & ~(m))
#define OUTONW(r, m) OUTW(r, INW(r) | (m))
#define OUTOFFW(r, m) OUTW(r, INW(r) & ~(m))
#define OUTONL(r, m) OUTL(r, INL(r) | (m))
#define OUTOFFL(r, m) OUTL(r, INL(r) & ~(m))
/*
* We normally want the chip to have a consistent view
* of driver internal data structures when we restart it.
* Thus these macros.
*/
#define OUTL_DSP(v) \
do { \
MEMORY_BARRIER(); \
OUTL (nc_dsp, (v)); \
} while (0)
#define OUTONB_STD() \
do { \
MEMORY_BARRIER(); \
OUTONB (nc_dcntl, (STD|NOCOM)); \
} while (0)
/*
** NCR53C8XX devices features table.
*/
struct ncr_chip {
unsigned short revision_id;
unsigned char burst_max; /* log-base-2 of max burst */
unsigned char offset_max;
unsigned char nr_divisor;
unsigned int features;
#define FE_LED0 (1<<0)
#define FE_WIDE (1<<1) /* Wide data transfers */
#define FE_ULTRA (1<<2) /* Ultra speed 20Mtrans/sec */
#define FE_DBLR (1<<4) /* Clock doubler present */
#define FE_QUAD (1<<5) /* Clock quadrupler present */
#define FE_ERL (1<<6) /* Enable read line */
#define FE_CLSE (1<<7) /* Cache line size enable */
#define FE_WRIE (1<<8) /* Write & Invalidate enable */
#define FE_ERMP (1<<9) /* Enable read multiple */
#define FE_BOF (1<<10) /* Burst opcode fetch */
#define FE_DFS (1<<11) /* DMA fifo size */
#define FE_PFEN (1<<12) /* Prefetch enable */
#define FE_LDSTR (1<<13) /* Load/Store supported */
#define FE_RAM (1<<14) /* On chip RAM present */
#define FE_VARCLK (1<<15) /* SCSI clock may vary */
#define FE_RAM8K (1<<16) /* On chip RAM sized 8Kb */
#define FE_64BIT (1<<17) /* Have a 64-bit PCI interface */
#define FE_IO256 (1<<18) /* Requires full 256 bytes in PCI space */
#define FE_NOPM (1<<19) /* Scripts handles phase mismatch */
#define FE_LEDC (1<<20) /* Hardware control of LED */
#define FE_DIFF (1<<21) /* Support Differential SCSI */
#define FE_66MHZ (1<<23) /* 66MHz PCI Support */
#define FE_DAC (1<<24) /* Support DAC cycles (64 bit addressing) */
#define FE_ISTAT1 (1<<25) /* Have ISTAT1, MBOX0, MBOX1 registers */
#define FE_DAC_IN_USE (1<<26) /* Platform does DAC cycles */
#define FE_EHP (1<<27) /* 720: Even host parity */
#define FE_MUX (1<<28) /* 720: Multiplexed bus */
#define FE_EA (1<<29) /* 720: Enable Ack */
#define FE_CACHE_SET (FE_ERL|FE_CLSE|FE_WRIE|FE_ERMP)
#define FE_SCSI_SET (FE_WIDE|FE_ULTRA|FE_DBLR|FE_QUAD|F_CLK80)
#define FE_SPECIAL_SET (FE_CACHE_SET|FE_BOF|FE_DFS|FE_LDSTR|FE_PFEN|FE_RAM)
};
/*
** Driver setup structure.
**
** This structure is initialized from linux config options.
** It can be overridden at boot-up by the boot command line.
*/
#define SCSI_NCR_MAX_EXCLUDES 8
struct ncr_driver_setup {
u8 master_parity;
u8 scsi_parity;
u8 disconnection;
u8 special_features;
u8 force_sync_nego;
u8 reverse_probe;
u8 pci_fix_up;
u8 use_nvram;
u8 verbose;
u8 default_tags;
u16 default_sync;
u16 debug;
u8 burst_max;
u8 led_pin;
u8 max_wide;
u8 settle_delay;
u8 diff_support;
u8 irqm;
u8 bus_check;
u8 optimize;
u8 recovery;
u8 host_id;
u16 iarb;
u32 excludes[SCSI_NCR_MAX_EXCLUDES];
char tag_ctrl[100];
};
/*
** Initial setup.
** Can be overridden at startup by a command line.
*/
#define SCSI_NCR_DRIVER_SETUP \
{ \
SCSI_NCR_SETUP_MASTER_PARITY, \
SCSI_NCR_SETUP_SCSI_PARITY, \
SCSI_NCR_SETUP_DISCONNECTION, \
SCSI_NCR_SETUP_SPECIAL_FEATURES, \
SCSI_NCR_SETUP_FORCE_SYNC_NEGO, \
0, \
0, \
1, \
0, \
SCSI_NCR_SETUP_DEFAULT_TAGS, \
SCSI_NCR_SETUP_DEFAULT_SYNC, \
0x00, \
7, \
0, \
1, \
SCSI_NCR_SETUP_SETTLE_TIME, \
0, \
0, \
1, \
0, \
0, \
255, \
0x00 \
}
/*
** Boot fail safe setup.
** Override initial setup from boot command line:
** ncr53c8xx=safe:y
*/
#define SCSI_NCR_DRIVER_SAFE_SETUP \
{ \
0, \
1, \
0, \
0, \
0, \
0, \
0, \
1, \
2, \
0, \
255, \
0x00, \
255, \
0, \
0, \
10, \
1, \
1, \
1, \
0, \
0, \
255 \
}
/**************** ORIGINAL CONTENT of ncrreg.h from FreeBSD ******************/
/*-----------------------------------------------------------------
**
** The ncr 53c810 register structure.
**
**-----------------------------------------------------------------
*/
struct ncr_reg {
/*00*/ u8 nc_scntl0; /* full arb., ena parity, par->ATN */
/*01*/ u8 nc_scntl1; /* no reset */
#define ISCON 0x10 /* connected to scsi */
#define CRST 0x08 /* force reset */
#define IARB 0x02 /* immediate arbitration */
/*02*/ u8 nc_scntl2; /* no disconnect expected */
#define SDU 0x80 /* cmd: disconnect will raise error */
#define CHM 0x40 /* sta: chained mode */
#define WSS 0x08 /* sta: wide scsi send [W]*/
#define WSR 0x01 /* sta: wide scsi received [W]*/
/*03*/ u8 nc_scntl3; /* cnf system clock dependent */
#define EWS 0x08 /* cmd: enable wide scsi [W]*/
#define ULTRA 0x80 /* cmd: ULTRA enable */
/* bits 0-2, 7 rsvd for C1010 */
/*04*/ u8 nc_scid; /* cnf host adapter scsi address */
#define RRE 0x40 /* r/w:e enable response to resel. */
#define SRE 0x20 /* r/w:e enable response to select */
/*05*/ u8 nc_sxfer; /* ### Sync speed and count */
/* bits 6-7 rsvd for C1010 */
/*06*/ u8 nc_sdid; /* ### Destination-ID */
/*07*/ u8 nc_gpreg; /* ??? IO-Pins */
/*08*/ u8 nc_sfbr; /* ### First byte in phase */
/*09*/ u8 nc_socl;
#define CREQ 0x80 /* r/w: SCSI-REQ */
#define CACK 0x40 /* r/w: SCSI-ACK */
#define CBSY 0x20 /* r/w: SCSI-BSY */
#define CSEL 0x10 /* r/w: SCSI-SEL */
#define CATN 0x08 /* r/w: SCSI-ATN */
#define CMSG 0x04 /* r/w: SCSI-MSG */
#define CC_D 0x02 /* r/w: SCSI-C_D */
#define CI_O 0x01 /* r/w: SCSI-I_O */
/*0a*/ u8 nc_ssid;
/*0b*/ u8 nc_sbcl;
/*0c*/ u8 nc_dstat;
#define DFE 0x80 /* sta: dma fifo empty */
#define MDPE 0x40 /* int: master data parity error */
#define BF 0x20 /* int: script: bus fault */
#define ABRT 0x10 /* int: script: command aborted */
#define SSI 0x08 /* int: script: single step */
#define SIR 0x04 /* int: script: interrupt instruct. */
#define IID 0x01 /* int: script: illegal instruct. */
/*0d*/ u8 nc_sstat0;
#define ILF 0x80 /* sta: data in SIDL register lsb */
#define ORF 0x40 /* sta: data in SODR register lsb */
#define OLF 0x20 /* sta: data in SODL register lsb */
#define AIP 0x10 /* sta: arbitration in progress */
#define LOA 0x08 /* sta: arbitration lost */
#define WOA 0x04 /* sta: arbitration won */
#define IRST 0x02 /* sta: scsi reset signal */
#define SDP 0x01 /* sta: scsi parity signal */
/*0e*/ u8 nc_sstat1;
#define FF3210 0xf0 /* sta: bytes in the scsi fifo */
/*0f*/ u8 nc_sstat2;
#define ILF1 0x80 /* sta: data in SIDL register msb[W]*/
#define ORF1 0x40 /* sta: data in SODR register msb[W]*/
#define OLF1 0x20 /* sta: data in SODL register msb[W]*/
#define DM 0x04 /* sta: DIFFSENS mismatch (895/6 only) */
#define LDSC 0x02 /* sta: disconnect & reconnect */
/*10*/ u8 nc_dsa; /* --> Base page */
/*11*/ u8 nc_dsa1;
/*12*/ u8 nc_dsa2;
/*13*/ u8 nc_dsa3;
/*14*/ u8 nc_istat; /* --> Main Command and status */
#define CABRT 0x80 /* cmd: abort current operation */
#define SRST 0x40 /* mod: reset chip */
#define SIGP 0x20 /* r/w: message from host to ncr */
#define SEM 0x10 /* r/w: message between host + ncr */
#define CON 0x08 /* sta: connected to scsi */
#define INTF 0x04 /* sta: int on the fly (reset by wr)*/
#define SIP 0x02 /* sta: scsi-interrupt */
#define DIP 0x01 /* sta: host/script interrupt */
/*15*/ u8 nc_istat1; /* 896 and later cores only */
#define FLSH 0x04 /* sta: chip is flushing */
#define SRUN 0x02 /* sta: scripts are running */
#define SIRQD 0x01 /* r/w: disable INT pin */
/*16*/ u8 nc_mbox0; /* 896 and later cores only */
/*17*/ u8 nc_mbox1; /* 896 and later cores only */
/*18*/ u8 nc_ctest0;
#define EHP 0x04 /* 720 even host parity */
/*19*/ u8 nc_ctest1;
/*1a*/ u8 nc_ctest2;
#define CSIGP 0x40
/* bits 0-2,7 rsvd for C1010 */
/*1b*/ u8 nc_ctest3;
#define FLF 0x08 /* cmd: flush dma fifo */
#define CLF 0x04 /* cmd: clear dma fifo */
#define FM 0x02 /* mod: fetch pin mode */
#define WRIE 0x01 /* mod: write and invalidate enable */
/* bits 4-7 rsvd for C1010 */
/*1c*/ u32 nc_temp; /* ### Temporary stack */
/*20*/ u8 nc_dfifo;
/*21*/ u8 nc_ctest4;
#define MUX 0x80 /* 720 host bus multiplex mode */
#define BDIS 0x80 /* mod: burst disable */
#define MPEE 0x08 /* mod: master parity error enable */
/*22*/ u8 nc_ctest5;
#define DFS 0x20 /* mod: dma fifo size */
/* bits 0-1, 3-7 rsvd for C1010 */
/*23*/ u8 nc_ctest6;
/*24*/ u32 nc_dbc; /* ### Byte count and command */
/*28*/ u32 nc_dnad; /* ### Next command register */
/*2c*/ u32 nc_dsp; /* --> Script Pointer */
/*30*/ u32 nc_dsps; /* --> Script pointer save/opcode#2 */
/*34*/ u8 nc_scratcha; /* Temporary register a */
/*35*/ u8 nc_scratcha1;
/*36*/ u8 nc_scratcha2;
/*37*/ u8 nc_scratcha3;
/*38*/ u8 nc_dmode;
#define BL_2 0x80 /* mod: burst length shift value +2 */
#define BL_1 0x40 /* mod: burst length shift value +1 */
#define ERL 0x08 /* mod: enable read line */
#define ERMP 0x04 /* mod: enable read multiple */
#define BOF 0x02 /* mod: burst op code fetch */
/*39*/ u8 nc_dien;
/*3a*/ u8 nc_sbr;
/*3b*/ u8 nc_dcntl; /* --> Script execution control */
#define CLSE 0x80 /* mod: cache line size enable */
#define PFF 0x40 /* cmd: pre-fetch flush */
#define PFEN 0x20 /* mod: pre-fetch enable */
#define EA 0x20 /* mod: 720 enable-ack */
#define SSM 0x10 /* mod: single step mode */
#define IRQM 0x08 /* mod: irq mode (1 = totem pole !) */
#define STD 0x04 /* cmd: start dma mode */
#define IRQD 0x02 /* mod: irq disable */
#define NOCOM 0x01 /* cmd: protect sfbr while reselect */
/* bits 0-1 rsvd for C1010 */
/*3c*/ u32 nc_adder;
/*40*/ u16 nc_sien; /* -->: interrupt enable */
/*42*/ u16 nc_sist; /* <--: interrupt status */
#define SBMC 0x1000/* sta: SCSI Bus Mode Change (895/6 only) */
#define STO 0x0400/* sta: timeout (select) */
#define GEN 0x0200/* sta: timeout (general) */
#define HTH 0x0100/* sta: timeout (handshake) */
#define MA 0x80 /* sta: phase mismatch */
#define CMP 0x40 /* sta: arbitration complete */
#define SEL 0x20 /* sta: selected by another device */
#define RSL 0x10 /* sta: reselected by another device*/
#define SGE 0x08 /* sta: gross error (over/underflow)*/
#define UDC 0x04 /* sta: unexpected disconnect */
#define RST 0x02 /* sta: scsi bus reset detected */
#define PAR 0x01 /* sta: scsi parity error */
/*44*/ u8 nc_slpar;
/*45*/ u8 nc_swide;
/*46*/ u8 nc_macntl;
/*47*/ u8 nc_gpcntl;
/*48*/ u8 nc_stime0; /* cmd: timeout for select&handshake*/
/*49*/ u8 nc_stime1; /* cmd: timeout user defined */
/*4a*/ u16 nc_respid; /* sta: Reselect-IDs */
/*4c*/ u8 nc_stest0;
/*4d*/ u8 nc_stest1;
#define SCLK 0x80 /* Use the PCI clock as SCSI clock */
#define DBLEN 0x08 /* clock doubler running */
#define DBLSEL 0x04 /* clock doubler selected */
/*4e*/ u8 nc_stest2;
#define ROF 0x40 /* reset scsi offset (after gross error!) */
#define DIF 0x20 /* 720 SCSI differential mode */
#define EXT 0x02 /* extended filtering */
/*4f*/ u8 nc_stest3;
#define TE 0x80 /* c: tolerAnt enable */
#define HSC 0x20 /* c: Halt SCSI Clock */
#define CSF 0x02 /* c: clear scsi fifo */
/*50*/ u16 nc_sidl; /* Lowlevel: latched from scsi data */
/*52*/ u8 nc_stest4;
#define SMODE 0xc0 /* SCSI bus mode (895/6 only) */
#define SMODE_HVD 0x40 /* High Voltage Differential */
#define SMODE_SE 0x80 /* Single Ended */
#define SMODE_LVD 0xc0 /* Low Voltage Differential */
#define LCKFRQ 0x20 /* Frequency Lock (895/6 only) */
/* bits 0-5 rsvd for C1010 */
/*53*/ u8 nc_53_;
/*54*/ u16 nc_sodl; /* Lowlevel: data out to scsi data */
/*56*/ u8 nc_ccntl0; /* Chip Control 0 (896) */
#define ENPMJ 0x80 /* Enable Phase Mismatch Jump */
#define PMJCTL 0x40 /* Phase Mismatch Jump Control */
#define ENNDJ 0x20 /* Enable Non Data PM Jump */
#define DISFC 0x10 /* Disable Auto FIFO Clear */
#define DILS 0x02 /* Disable Internal Load/Store */
#define DPR 0x01 /* Disable Pipe Req */
/*57*/ u8 nc_ccntl1; /* Chip Control 1 (896) */
#define ZMOD 0x80 /* High Impedance Mode */
#define DIC 0x10 /* Disable Internal Cycles */
#define DDAC 0x08 /* Disable Dual Address Cycle */
#define XTIMOD 0x04 /* 64-bit Table Ind. Indexing Mode */
#define EXTIBMV 0x02 /* Enable 64-bit Table Ind. BMOV */
#define EXDBMV 0x01 /* Enable 64-bit Direct BMOV */
/*58*/ u16 nc_sbdl; /* Lowlevel: data from scsi data */
/*5a*/ u16 nc_5a_;
/*5c*/ u8 nc_scr0; /* Working register B */
/*5d*/ u8 nc_scr1; /* */
/*5e*/ u8 nc_scr2; /* */
/*5f*/ u8 nc_scr3; /* */
/*60*/ u8 nc_scrx[64]; /* Working register C-R */
/*a0*/ u32 nc_mmrs; /* Memory Move Read Selector */
/*a4*/ u32 nc_mmws; /* Memory Move Write Selector */
/*a8*/ u32 nc_sfs; /* Script Fetch Selector */
/*ac*/ u32 nc_drs; /* DSA Relative Selector */
/*b0*/ u32 nc_sbms; /* Static Block Move Selector */
/*b4*/ u32 nc_dbms; /* Dynamic Block Move Selector */
/*b8*/ u32 nc_dnad64; /* DMA Next Address 64 */
/*bc*/ u16 nc_scntl4; /* C1010 only */
#define U3EN 0x80 /* Enable Ultra 3 */
#define AIPEN 0x40 /* Allow check upper byte lanes */
#define XCLKH_DT 0x08 /* Extra clock of data hold on DT
transfer edge */
#define XCLKH_ST 0x04 /* Extra clock of data hold on ST
transfer edge */
/*be*/ u8 nc_aipcntl0; /* Epat Control 1 C1010 only */
/*bf*/ u8 nc_aipcntl1; /* AIP Control C1010_66 Only */
/*c0*/ u32 nc_pmjad1; /* Phase Mismatch Jump Address 1 */
/*c4*/ u32 nc_pmjad2; /* Phase Mismatch Jump Address 2 */
/*c8*/ u8 nc_rbc; /* Remaining Byte Count */
/*c9*/ u8 nc_rbc1; /* */
/*ca*/ u8 nc_rbc2; /* */
/*cb*/ u8 nc_rbc3; /* */
/*cc*/ u8 nc_ua; /* Updated Address */
/*cd*/ u8 nc_ua1; /* */
/*ce*/ u8 nc_ua2; /* */
/*cf*/ u8 nc_ua3; /* */
/*d0*/ u32 nc_esa; /* Entry Storage Address */
/*d4*/ u8 nc_ia; /* Instruction Address */
/*d5*/ u8 nc_ia1;
/*d6*/ u8 nc_ia2;
/*d7*/ u8 nc_ia3;
/*d8*/ u32 nc_sbc; /* SCSI Byte Count (3 bytes only) */
/*dc*/ u32 nc_csbc; /* Cumulative SCSI Byte Count */
/* Following for C1010 only */
/*e0*/ u16 nc_crcpad; /* CRC Value */
/*e2*/ u8 nc_crccntl0; /* CRC control register */
#define SNDCRC 0x10 /* Send CRC Request */
/*e3*/ u8 nc_crccntl1; /* CRC control register */
/*e4*/ u32 nc_crcdata; /* CRC data register */
/*e8*/ u32 nc_e8_; /* rsvd */
/*ec*/ u32 nc_ec_; /* rsvd */
/*f0*/ u16 nc_dfbc; /* DMA FIFO byte count */
};
/*-----------------------------------------------------------
**
** Utility macros for the script.
**
**-----------------------------------------------------------
*/
#define REGJ(p,r) (offsetof(struct ncr_reg, p ## r))
#define REG(r) REGJ (nc_, r)
typedef u32 ncrcmd;
/*-----------------------------------------------------------
**
** SCSI phases
**
** DT phases illegal for ncr driver.
**
**-----------------------------------------------------------
*/
#define SCR_DATA_OUT 0x00000000
#define SCR_DATA_IN 0x01000000
#define SCR_COMMAND 0x02000000
#define SCR_STATUS 0x03000000
#define SCR_DT_DATA_OUT 0x04000000
#define SCR_DT_DATA_IN 0x05000000
#define SCR_MSG_OUT 0x06000000
#define SCR_MSG_IN 0x07000000
#define SCR_ILG_OUT 0x04000000
#define SCR_ILG_IN 0x05000000
/*-----------------------------------------------------------
**
** Data transfer via SCSI.
**
**-----------------------------------------------------------
**
** MOVE_ABS (LEN)
** <<start address>>
**
** MOVE_IND (LEN)
** <<dnad_offset>>
**
** MOVE_TBL
** <<dnad_offset>>
**
**-----------------------------------------------------------
*/
#define OPC_MOVE 0x08000000
#define SCR_MOVE_ABS(l) ((0x00000000 | OPC_MOVE) | (l))
#define SCR_MOVE_IND(l) ((0x20000000 | OPC_MOVE) | (l))
#define SCR_MOVE_TBL (0x10000000 | OPC_MOVE)
#define SCR_CHMOV_ABS(l) ((0x00000000) | (l))
#define SCR_CHMOV_IND(l) ((0x20000000) | (l))
#define SCR_CHMOV_TBL (0x10000000)
struct scr_tblmove {
u32 size;
u32 addr;
};
/*-----------------------------------------------------------
**
** Selection
**
**-----------------------------------------------------------
**
** SEL_ABS | SCR_ID (0..15) [ | REL_JMP]
** <<alternate_address>>
**
** SEL_TBL | << dnad_offset>> [ | REL_JMP]
** <<alternate_address>>
**
**-----------------------------------------------------------
*/
#define SCR_SEL_ABS 0x40000000
#define SCR_SEL_ABS_ATN 0x41000000
#define SCR_SEL_TBL 0x42000000
#define SCR_SEL_TBL_ATN 0x43000000
#ifdef SCSI_NCR_BIG_ENDIAN
struct scr_tblsel {
u8 sel_scntl3;
u8 sel_id;
u8 sel_sxfer;
u8 sel_scntl4;
};