/* SPDX-License-Identifier: GPL-2.0-or-later */ /****************************************************************************** ** Device driver for the PCI-SCSI NCR538XX controller family. ** ** Copyright (C) 1994 Wolfgang Stanglmeier ** Copyright (C) 1998-2001 Gerard Roudier <groudier@free.fr> ** ** **----------------------------------------------------------------------------- ** ** 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) #define SCSI_NCR_MAX_LUN (16) /* * 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; }; #else struct scr_tblsel { u8 sel_scntl4; u8 sel_sxfer; u8 sel_id; u8 sel_scntl3; }; #endif #define SCR_JMP_REL 0x04000000 #define SCR_ID(id) (((u32)(id)) << 16) /*----------------------------------------------------------- ** ** Waiting for Disconnect or Reselect ** **----------------------------------------------------------- ** ** WAIT_DISC ** dummy: <<alternate_address>> ** ** WAIT_RESEL ** <<alternate_address>> ** **----------------------------------------------------------- */ #define SCR_WAIT_DISC 0x48000000 #define SCR_WAIT_RESEL 0x50000000 /*----------------------------------------------------------- ** ** Bit Set / Reset ** **----------------------------------------------------------- ** ** SET (flags {|.. }) ** ** CLR (flags {|.. }) ** **----------------------------------------------------------- */ #define SCR_SET(f) (0x58000000 | (f)) #define SCR_CLR(f) (0x60000000 | (f)) #define SCR_CARRY 0x00000400 #define SCR_TRG 0x00000200 #define SCR_ACK 0x00000040 #define SCR_ATN 0x00000008 /*----------------------------------------------------------- ** ** Memory to memory move ** **----------------------------------------------------------- ** ** COPY (bytecount) ** << source_address >> ** << destination_address >> ** ** SCR_COPY sets the NO FLUSH option by default. ** SCR_COPY_F does not set this option. ** ** For chips which do not support this option, ** ncr_copy_and_bind() will remove this bit. **----------------------------------------------------------- */ #define SCR_NO_FLUSH 0x01000000 #define SCR_COPY(n) (0xc0000000 | SCR_NO_FLUSH | (n)) #define SCR_COPY_F(n) (0xc0000000 | (n)) /*----------------------------------------------------------- ** ** Register move and binary operations ** **----------------------------------------------------------- ** ** SFBR_REG (reg, op, data) reg = SFBR op data ** << 0 >> ** ** REG_SFBR (reg, op, data) SFBR = reg op data ** << 0 >> ** ** REG_REG (reg, op, data) reg = reg op data ** << 0 >> ** **----------------------------------------------------------- ** On 810A, 860, 825A, 875, 895 and 896 chips the content ** of SFBR register can be used as data (SCR_SFBR_DATA). ** The 896 has additional IO registers starting at ** offset 0x80. Bit 7 of register offset is stored in ** bit 7 of the SCRIPTS instruction first DWORD. **----------------------------------------------------------- */ #define SCR_REG_OFS(ofs) ((((ofs) & 0x7f) << 16ul) + ((ofs) & 0x80)) #define SCR_SFBR_REG(reg,op,data) \ (0x68000000 | (SCR_REG_OFS(REG(reg))) | (op) | (((data)&0xff)<<8ul)) #define SCR_REG_SFBR(reg,op,data) \ (0x70000000 | (SCR_REG_OFS(REG(reg))) | (op) | (((data)&0xff)<<8ul)) #define SCR_REG_REG(reg,op,data) \ (0x78000000 | (SCR_REG_OFS(REG(reg))) | (op) | (((data)&0xff)<<8ul)) #define SCR_LOAD 0x00000000 #define SCR_SHL 0x01000000 #define SCR_OR 0x02000000 #define SCR_XOR 0x03000000 #define SCR_AND 0x04000000 #define SCR_SHR 0x05000000 #define SCR_ADD 0x06000000 #define SCR_ADDC 0x07000000 #define SCR_SFBR_DATA (0x00800000>>8ul) /* Use SFBR as data */ /*----------------------------------------------------------- ** ** FROM_REG (reg) SFBR = reg ** << 0 >> ** ** TO_REG (reg) reg = SFBR ** << 0 >> ** ** LOAD_REG (reg, data) reg = <data> ** << 0 >> ** ** LOAD_SFBR(data) SFBR = <data> ** << 0 >> ** **----------------------------------------------------------- */ #define SCR_FROM_REG(reg) \ SCR_REG_SFBR(reg,SCR_OR,0) #define SCR_TO_REG(reg) \ SCR_SFBR_REG(reg,SCR_OR,0) #define SCR_LOAD_REG(reg,data) \ SCR_REG_REG(reg,SCR_LOAD,data) #define SCR_LOAD_SFBR(data) \ (SCR_REG_SFBR (gpreg, SCR_LOAD, data)) /*----------------------------------------------------------- ** ** LOAD from memory to register. ** STORE from register to memory. ** ** Only supported by 810A, 860, 825A, 875, 895 and 896. ** **----------------------------------------------------------- ** ** LOAD_ABS (LEN) ** <<start address>> ** ** LOAD_REL (LEN) (DSA relative) ** <<dsa_offset>> ** **----------------------------------------------------------- */ #define SCR_REG_OFS2(ofs) (((ofs) & 0xff) << 16ul) #define SCR_NO_FLUSH2 0x02000000 #define SCR_DSA_REL2 0x10000000 #define SCR_LOAD_R(reg, how, n) \ (0xe1000000 | how | (SCR_REG_OFS2(REG(reg))) | (n)) #define SCR_STORE_R(reg, how, n) \ (0xe0000000 | how | (SCR_REG_OFS2(REG(reg))) | (n)) #define SCR_LOAD_ABS(reg, n) SCR_LOAD_R(reg, SCR_NO_FLUSH2, n) #define SCR_LOAD_REL(reg, n) SCR_LOAD_R(reg, SCR_NO_FLUSH2|SCR_DSA_REL2, n) #define SCR_LOAD_ABS_F(reg, n) SCR_LOAD_R(reg, 0, n) #define SCR_LOAD_REL_F(reg, n) SCR_LOAD_R(reg, SCR_DSA_REL2, n) #define SCR_STORE_ABS(reg, n) SCR_STORE_R(reg, SCR_NO_FLUSH2, n) #define SCR_STORE_REL(reg, n) SCR_STORE_R(reg, SCR_NO_FLUSH2|SCR_DSA_REL2,n) #define SCR_STORE_ABS_F(reg, n) SCR_STORE_R(reg, 0, n) #define SCR_STORE_REL_F(reg, n) SCR_STORE_R(reg, SCR_DSA_REL2, n) /*----------------------------------------------------------- ** ** Waiting for Disconnect or Reselect ** **----------------------------------------------------------- ** ** JUMP [ | IFTRUE/IFFALSE ( ... ) ] ** <<address>> ** ** JUMPR [ | IFTRUE/IFFALSE ( ... ) ] ** <<distance>> ** ** CALL [ | IFTRUE/IFFALSE ( ... ) ] ** <<address>> ** ** CALLR [ | IFTRUE/IFFALSE ( ... ) ] ** <<distance>> ** ** RETURN [ | IFTRUE/IFFALSE ( ... ) ] ** <<dummy>> ** ** INT [ | IFTRUE/IFFALSE ( ... ) ] ** <<ident>> ** ** INT_FLY [ | IFTRUE/IFFALSE ( ... ) ] ** <<ident>> ** ** Conditions: ** WHEN (phase) ** IF (phase) ** CARRYSET ** DATA (data, mask) ** **----------------------------------------------------------- */ #define SCR_NO_OP 0x80000000 #define SCR_JUMP 0x80080000 #define SCR_JUMP64 0x80480000 #define SCR_JUMPR 0x80880000 #define SCR_CALL 0x88080000 #define SCR_CALLR 0x88880000 #define SCR_RETURN 0x90080000 #define SCR_INT 0x98080000 #define SCR_INT_FLY 0x98180000 #define IFFALSE(arg) (0x00080000 | (arg)) #define IFTRUE(arg) (0x00000000 | (arg)) #define WHEN(phase) (0x00030000 | (phase)) #define IF(phase) (0x00020000 | (phase)) #define DATA(D) (0x00040000 | ((D) & 0xff)) #define MASK(D,M) (0x00040000 | (((M ^ 0xff) & 0xff) << 8ul)|((D) & 0xff)) #define CARRYSET (0x00200000) /*----------------------------------------------------------- ** ** SCSI constants. ** **----------------------------------------------------------- */ /* * End of ncrreg from FreeBSD */ /* Build a scatter/gather entry. see sym53c8xx_2/sym_hipd.h for more detailed sym_build_sge() implementation ;) */ #define ncr_build_sge(np, data, badd, len) \ do { \ (data)->addr = cpu_to_scr(badd); \ (data)->size = cpu_to_scr(len); \ } while (0) /*========================================================== ** ** Structures used by the detection routine to transmit ** device configuration to the attach function. ** **========================================================== */ struct ncr_slot { u_long base; u_long base_2; u_long base_c; u_long base_2_c; void __iomem *base_v; void __iomem *base_2_v; int irq; /* port and reg fields to use INB, OUTB macros */ volatile struct ncr_reg __iomem *reg; }; /*========================================================== ** ** Structure used by detection routine to save data on ** each detected board for attach. ** **========================================================== */ struct ncr_device { struct device *dev; struct ncr_slot slot; struct ncr_chip chip; u_char host_id; u8 differential; }; /* To keep track of the dma mapping (sg/single) that has been set */ struct ncr_cmd_priv { int data_mapped; int data_mapping; }; extern struct Scsi_Host *ncr_attach(struct scsi_host_template *tpnt, int unit, struct ncr_device *device); extern void ncr53c8xx_release(struct Scsi_Host *host); irqreturn_t ncr53c8xx_intr(int irq, void *dev_id); extern int ncr53c8xx_init(void); extern void ncr53c8xx_exit(void); #endif /* NCR53C8XX_H */
