/* AM53/79C974 (PCscsi) driver release 0.5 * * The architecture and much of the code of this device * driver was originally developed by Drew Eckhardt for * the NCR5380. The following copyrights apply: * For the architecture and all parts similar to the NCR5380: * Copyright 1993, Drew Eckhardt * Visionary Computing * (Unix and Linux consulting and custom programming) * drew@colorado.edu * +1 (303) 666-5836 * * The AM53C974_nobios_detect code was originally developed by * Robin Cutshaw (robin@xfree86.org) and is used here in a * modified form. * * For the other parts: * Copyright 1994, D. Frieauff * EMail: fri@rsx42sun0.dofn.de * Phone: x49-7545-8-2256 , x49-7541-42305 */ #ifndef AM53C974_H #define AM53C974_H #include /*************************************************************************************** * Default setting of the controller's SCSI id. Edit and uncomment this only if your * * BIOS does not correctly initialize the controller's SCSI id. * * If you don't get a warning during boot, it is correctly initialized. * ****************************************************************************************/ /* #define AM53C974_SCSI_ID 7 */ /*************************************************************************************** * Default settings for sync. negotiation enable, transfer rate and sync. offset. * * These settings can be replaced by LILO overrides (append) with the following syntax: * * AM53C974=host-scsi-id, target-scsi-id, max-rate, max-offset * * Sync. negotiation is disabled by default and will be enabled for those targets which * * are specified in the LILO override * ****************************************************************************************/ #define DEFAULT_SYNC_NEGOTIATION_ENABLED 0 /* 0 or 1 */ #define DEFAULT_RATE 5 /* MHz, min: 3; max: 10 */ #define DEFAULT_SYNC_OFFSET 0 /* bytes, min: 0; max: 15; use 0 for async. mode */ /* --------------------- don't edit below here --------------------- */ #define AM53C974_DRIVER_REVISION_MAJOR 0 #define AM53C974_DRIVER_REVISION_MINOR 5 #define SEPARATOR_LINE \ "--------------------------------------------------------------------------\n" /* debug control */ /* #define AM53C974_DEBUG */ /* #define AM53C974_DEBUG_MSG */ /* #define AM53C974_DEBUG_KEYWAIT */ /* #define AM53C974_DEBUG_INIT */ /* #define AM53C974_DEBUG_QUEUE */ /* #define AM53C974_DEBUG_INFO */ /* #define AM53C974_DEBUG_LINKED */ /* #define VERBOSE_AM53C974_DEBUG */ /* #define AM53C974_DEBUG_INTR */ /* #define AM53C974_DEB_RESEL */ #define AM53C974_DEBUG_ABORT /* #define AM53C974_OPTION_DEBUG_PROBE_ONLY */ /* special options/constants */ #define DEF_CLK 40 /* chip clock freq. in MHz */ #define MIN_PERIOD 4 /* for negotiation: min. number of clocks per cycle */ #define MAX_PERIOD 13 /* for negotiation: max. number of clocks per cycle */ #define MAX_OFFSET 15 /* for negotiation: max. offset (0=async) */ #define DEF_SCSI_TIMEOUT 245 /* STIMREG value, 40 Mhz */ #define DEF_STP 8 /* STPREG value assuming 5.0 MB/sec, FASTCLK, FASTSCSI */ #define DEF_SOF_RAD 0 /* REQ/ACK deassertion delay */ #define DEF_SOF_RAA 0 /* REQ/ACK assertion delay */ #define DEF_ETM 0 /* CNTLREG1, ext. timing mode */ #define DEF_PERE 1 /* CNTLREG1, parity error reporting */ #define DEF_CLKF 0 /* CLKFREG, 0=40 Mhz */ #define DEF_ENF 1 /* CNTLREG2, enable features */ #define DEF_ADIDCHK 0 /* CNTLREG3, additional ID check */ #define DEF_FASTSCSI 1 /* CNTLREG3, fast SCSI */ #define DEF_FASTCLK 1 /* CNTLREG3, fast clocking, 5 MB/sec at 40MHz chip clk */ #define DEF_GLITCH 1 /* CNTLREG4, glitch eater, 0=12ns, 1=35ns, 2=25ns, 3=off */ #define DEF_PWD 0 /* CNTLREG4, reduced power feature */ #define DEF_RAE 0 /* CNTLREG4, RAE active negation on REQ, ACK only */ #define DEF_RADE 1 /* 1CNTLREG4, active negation on REQ, ACK and data */ /*** PCI block ***/ /* standard registers are defined in */ #ifndef PCI_VENDOR_ID_AMD #define PCI_VENDOR_ID_AMD 0x1022 #define PCI_DEVICE_ID_AMD_SCSI 0x2020 #endif #define PCI_BASE_MASK 0xFFFFFFE0 #define PCI_COMMAND_PERREN 0x40 #define PCI_SCRATCH_REG_0 0x40 /* 16 bits */ #define PCI_SCRATCH_REG_1 0x42 /* 16 bits */ #define PCI_SCRATCH_REG_2 0x44 /* 16 bits */ #define PCI_SCRATCH_REG_3 0x46 /* 16 bits */ #define PCI_SCRATCH_REG_4 0x48 /* 16 bits */ #define PCI_SCRATCH_REG_5 0x4A /* 16 bits */ #define PCI_SCRATCH_REG_6 0x4C /* 16 bits */ #define PCI_SCRATCH_REG_7 0x4E /* 16 bits */ /*** SCSI block ***/ #define CTCLREG 0x00 /* r current transf. count, low byte */ #define CTCMREG 0x04 /* r current transf. count, middle byte */ #define CTCHREG 0x38 /* r current transf. count, high byte */ #define STCLREG 0x00 /* w start transf. count, low byte */ #define STCMREG 0x04 /* w start transf. count, middle byte */ #define STCHREG 0x38 /* w start transf. count, high byte */ #define FFREG 0x08 /* rw SCSI FIFO reg. */ #define STIMREG 0x14 /* w SCSI timeout reg. */ #define SDIDREG 0x10 /* w SCSI destination ID reg. */ #define SDIREG_MASK 0x07 /* mask */ #define STPREG 0x18 /* w synchronous transf. period reg. */ #define STPREG_STP 0x1F /* synchr. transfer period */ #define CLKFREG 0x24 /* w clock factor reg. */ #define CLKFREG_MASK 0x07 /* mask */ #define CMDREG 0x0C /* rw SCSI command reg. */ #define CMDREG_DMA 0x80 /* set DMA mode (set together with opcodes below) */ #define CMDREG_IT 0x10 /* information transfer */ #define CMDREG_ICCS 0x11 /* initiator command complete steps */ #define CMDREG_MA 0x12 /* message accepted */ #define CMDREG_TPB 0x98 /* transfer pad bytes, DMA mode only */ #define CMDREG_SATN 0x1A /* set ATN */ #define CMDREG_RATN 0x1B /* reset ATN */ #define CMDREG_SOAS 0x41 /* select without ATN steps */ #define CMDREG_SAS 0x42 /* select with ATN steps (1 msg byte) */ #define CMDREG_SASS 0x43 /* select with ATN and stop steps */ #define CMDREG_ESR 0x44 /* enable selection/reselection */ #define CMDREG_DSR 0x45 /* disable selection/reselection */ #define CMDREG_SA3S 0x46 /* select with ATN 3 steps (3 msg bytes) */ #define CMDREG_NOP 0x00 /* no operation */ #define CMDREG_CFIFO 0x01 /* clear FIFO */ #define CMDREG_RDEV 0x02 /* reset device */ #define CMDREG_RBUS 0x03 /* reset SCSI bus */ #define STATREG 0x10 /* r SCSI status reg. */ #define STATREG_INT 0x80 /* SCSI interrupt condition detected */ #define STATREG_IOE 0x40 /* SCSI illegal operation error detected */ #define STATREG_PE 0x20 /* SCSI parity error detected */ #define STATREG_CTZ 0x10 /* CTC reg decremented to zero */ #define STATREG_MSG 0x04 /* SCSI MSG phase (latched?) */ #define STATREG_CD 0x02 /* SCSI C/D phase (latched?) */ #define STATREG_IO 0x01 /* SCSI I/O phase (latched?) */ #define STATREG_PHASE 0x07 /* SCSI phase mask */ #define INSTREG 0x14 /* r interrupt status reg. */ #define INSTREG_SRST 0x80 /* SCSI reset detected */ #define INSTREG_ICMD 0x40 /* SCSI invalid command detected */ #define INSTREG_DIS 0x20 /* target disconnected or sel/resel timeout*/ #define INSTREG_SR 0x10 /* device on bus has service request */ #define INSTREG_SO 0x08 /* successful operation */ #define INSTREG_RESEL 0x04 /* device reselected as initiator */ #define ISREG 0x18 /* r internal state reg. */ #define ISREG_SOF 0x08 /* synchronous offset flag (act. low) */ #define ISREG_IS 0x07 /* status of intermediate op. */ #define ISREG_OK_NO_STOP 0x04 /* selection successful */ #define ISREG_OK_STOP 0x01 /* selection successful */ #define CFIREG 0x1C /* r current FIFO/internal state reg. */ #define CFIREG_IS 0xE0 /* status of intermediate op. */ #define CFIREG_CF 0x1F /* number of bytes in SCSI FIFO */ #define SOFREG 0x1C /* w synchr. offset reg. */ #define SOFREG_RAD 0xC0 /* REQ/ACK deassertion delay (sync.) */ #define SOFREG_RAA 0x30 /* REQ/ACK assertion delay (sync.) */ #define SOFREG_SO 0x0F /* synch. offset (sync.) */ #define CNTLREG1 0x20 /* rw control register one */ #define CNTLREG1_ETM 0x80 /* set extended timing mode */ #define CNTLREG1_DISR 0x40 /* disable interrupt on SCSI reset */ #define CNTLREG1_PERE 0x10 /* enable parity error reporting */ #define CNTLREG1_SID 0x07 /* host adapter SCSI ID */ #define CNTLREG2 0x2C /* rw control register two */ #define CNTLREG2_ENF 0x40 /* enable features */ #define CNTLREG3 0x30 /* rw control register three */ #define CNTLREG3_ADIDCHK 0x80 /* additional ID check */ #define CNTLREG3_FASTSCSI 0x10 /* fast SCSI */ #define CNTLREG3_FASTCLK 0x08 /* fast SCSI clocking */ #define CNTLREG4 0x34 /* rw control register four */ #define CNTLREG4_GLITCH 0xC0 /* glitch eater */ #define CNTLREG4_PWD 0x20 /* reduced power feature */ #define CNTLREG4_RAE 0x08 /* write only, active negot. ctrl. */ #define CNTLREG4_RADE 0x04 /* active negot. ctrl. */ #define CNTLREG4_RES 0x10 /* reserved bit, must be 1 */ /*** DMA block ***/ #define DMACMD 0x40 /* rw command */ #define DMACMD_DIR 0x80 /* transfer direction (1=read from device) */ #define DMACMD_INTE_D 0x40 /* DMA transfer interrupt enable */ #define DMACMD_INTE_P 0x20 /* page transfer interrupt enable */ #define DMACMD_MDL 0x10 /* map to memory descriptor list */ #define DMACMD_DIAG 0x04 /* diagnostics, set to 0 */ #define DMACMD_IDLE 0x00 /* idle cmd */ #define DMACMD_BLAST 0x01 /* flush FIFO to memory */ #define DMACMD_ABORT 0x02 /* terminate DMA */ #define DMACMD_START 0x03 /* start DMA */ #define DMASTATUS 0x54 /* r status register */ #define DMASTATUS_BCMPLT 0x20 /* BLAST complete */ #define DMASTATUS_SCSIINT 0x10 /* SCSI interrupt pending */ #define DMASTATUS_DONE 0x08 /* DMA transfer terminated */ #define DMASTATUS_ABORT 0x04 /* DMA transfer aborted */ #define DMASTATUS_ERROR 0x02 /* DMA transfer error */ #define DMASTATUS_PWDN 0x02 /* power down indicator */ #define DMASTC 0x44 /* rw starting transfer count */ #define DMASPA 0x48 /* rw starting physical address */ #define DMAWBC 0x4C /* r working byte counter */ #define DMAWAC 0x50 /* r working address counter */ #define DMASMDLA 0x58 /* rw starting MDL address */ #define DMAWMAC 0x5C /* r working MDL counter */ /*** SCSI phases ***/ #define PHASE_MSGIN 0x07 #define PHASE_MSGOUT 0x06 #define PHASE_RES_1 0x05 #define PHASE_RES_0 0x04 #define PHASE_STATIN 0x03 #define PHASE_CMDOUT 0x02 #define PHASE_DATAIN 0x01 #define PHASE_DATAOUT 0x00 struct AM53C974_hostdata { volatile unsigned in_reset:1; /* flag, says bus reset pending */ volatile unsigned aborted:1; /* flag, says aborted */ volatile unsigned selecting:1; /* selection started, but not yet finished */ volatile unsigned disconnecting: 1; /* disconnection started, but not yet finished */ volatile unsigned dma_busy:1; /* dma busy when service request for info transfer received */ volatile unsigned char msgout[10]; /* message to output in MSGOUT_PHASE */ volatile unsigned char last_message[10]; /* last message OUT */ volatile Scsi_Cmnd *issue_queue; /* waiting to be issued */ volatile Scsi_Cmnd *disconnected_queue; /* waiting for reconnect */ volatile Scsi_Cmnd *sel_cmd; /* command for selection */ volatile Scsi_Cmnd *connected; /* currently connected command */ volatile unsigned char busy[8]; /* index = target, bit = lun */ unsigned char sync_per[8]; /* synchronous transfer period (in effect) */ unsigned char sync_off[8]; /* synchronous offset (in effect) */ unsigned char sync_neg[8]; /* sync. negotiation performed (in effect) */ unsigned char sync_en[8]; /* sync. negotiation performed (in effect) */ unsigned char max_rate[8]; /* max. transfer rate (setup) */ unsigned char max_offset[8]; /* max. sync. offset (setup), only valid if corresponding sync_en is nonzero */ }; #define AM53C974 { \ NULL, /* pointer to next in list */ \ NULL, /* long * usage_count */ \ NULL, /* struct proc_dir_entry *proc_dir */ \ NULL, /* int (*proc_info)(char *, char **, off_t, int, int, int); */ \ "AM53C974", /* name */ \ AM53C974_detect, /* int (* detect)(struct SHT *) */ \ NULL, /* int (*release)(struct Scsi_Host *) */ \ AM53C974_info, /* const char *(* info)(struct Scsi_Host *) */ \ AM53C974_command, /* int (* command)(Scsi_Cmnd *) */ \ AM53C974_queue_command, /* int (* queuecommand)(Scsi_Cmnd *, \ void (*done)(Scsi_Cmnd *)) */ \ AM53C974_abort, /* int (* abort)(Scsi_Cmnd *) */ \ AM53C974_reset, /* int (* reset)(Scsi_Cmnd *) */ \ NULL, /* int (* slave_attach)(int, int) */ \ scsicam_bios_param, /* int (* bios_param)(Disk *, int, int[]) */ \ 12, /* can_queue */ \ -1, /* this_id */ \ SG_ALL, /* sg_tablesize */ \ 1, /* cmd_per_lun */ \ 0, /* present, i.e. how many adapters of this kind */ \ 0, /* unchecked_isa_dma */ \ DISABLE_CLUSTERING /* use_clustering */ \ } void AM53C974_setup(char *str, int *ints); int AM53C974_detect(Scsi_Host_Template *tpnt); int AM53C974_biosparm(Disk *disk, int dev, int *info_array); const char *AM53C974_info(struct Scsi_Host *); int AM53C974_command(Scsi_Cmnd *SCpnt); int AM53C974_queue_command(Scsi_Cmnd *cmd, void (*done)(Scsi_Cmnd *)); int AM53C974_abort(Scsi_Cmnd *cmd); int AM53C974_reset (Scsi_Cmnd *cmd, unsigned int flags); #define AM53C974_local_declare() unsigned long io_port #define AM53C974_setio(instance) io_port = instance->io_port #define AM53C974_read_8(addr) inb(io_port + (addr)) #define AM53C974_write_8(addr,x) outb((x), io_port + (addr)) #define AM53C974_read_16(addr) inw(io_port + (addr)) #define AM53C974_write_16(addr,x) outw((x), io_port + (addr)) #define AM53C974_read_32(addr) inl(io_port + (addr)) #define AM53C974_write_32(addr,x) outl((x), io_port + (addr)) #define AM53C974_poll_int() { do { statreg = AM53C974_read_8(STATREG); } \ while (!(statreg & STATREG_INT)) ; \ AM53C974_read_8(INSTREG) ; } /* clear int */ #define AM53C974_cfifo() (AM53C974_read_8(CFIREG) & CFIREG_CF) /* These are "special" values for the tag parameter passed to AM53C974_select. */ #define TAG_NEXT -1 /* Use next free tag */ #define TAG_NONE -2 /* Establish I_T_L nexus instead of I_T_L_Q * even on SCSI-II devices */ /************ LILO overrides *************/ typedef struct _override_t { int host_scsi_id; /* SCSI id of the bus controller */ int target_scsi_id; /* SCSI id of target */ int max_rate; /* max. transfer rate */ int max_offset; /* max. sync. offset, 0 = asynchronous */ } override_t; /************ PCI stuff *************/ #define AM53C974_PCIREG_OPEN() outb(0xF1, 0xCF8); outb(0, 0xCFA) #define AM53C974_PCIREG_CLOSE() outb(0, 0xCF8) #define AM53C974_PCIREG_READ_BYTE(instance,a) ( inb((a) + (instance)->io_port) ) #define AM53C974_PCIREG_READ_WORD(instance,a) ( inw((a) + (instance)->io_port) ) #define AM53C974_PCIREG_READ_DWORD(instance,a) ( inl((a) + (instance)->io_port) ) #define AM53C974_PCIREG_WRITE_BYTE(instance,x,a) ( outb((x), (a) + (instance)->io_port) ) #define AM53C974_PCIREG_WRITE_WORD(instance,x,a) ( outw((x), (a) + (instance)->io_port) ) #define AM53C974_PCIREG_WRITE_DWORD(instance,x,a) ( outl((x), (a) + (instance)->io_port) ) typedef struct _pci_config_t { /* start of official PCI config space header */ union { unsigned int device_vendor; struct { unsigned short vendor; unsigned short device; } dv; } dv_id; #define _device_vendor dv_id.device_vendor #define _vendor dv_id.dv.vendor #define _device dv_id.dv.device union { unsigned int status_command; struct { unsigned short command; unsigned short status; } sc; } stat_cmd; #define _status_command stat_cmd.status_command #define _command stat_cmd.sc.command #define _status stat_cmd.sc.status union { unsigned int class_revision; struct { unsigned char rev_id; unsigned char prog_if; unsigned char sub_class; unsigned char base_class; } cr; } class_rev; #define _class_revision class_rev.class_revision #define _rev_id class_rev.cr.rev_id #define _prog_if class_rev.cr.prog_if #define _sub_class class_rev.cr.sub_class #define _base_class class_rev.cr.base_class union { unsigned int bist_header_latency_cache; struct { unsigned char cache_line_size; unsigned char latency_timer; unsigned char header_type; unsigned char bist; } bhlc; } bhlc; #define _bist_header_latency_cache bhlc.bist_header_latency_cache #define _cache_line_size bhlc.bhlc.cache_line_size #define _latency_timer bhlc.bhlc.latency_timer #define _header_type bhlc.bhlc.header_type #define _bist bhlc.bhlc.bist unsigned int _base0; unsigned int _base1; unsigned int _base2; unsigned int _base3; unsigned int _base4; unsigned int _base5; unsigned int rsvd1; unsigned int rsvd2; unsigned int _baserom; unsigned int rsvd3; unsigned int rsvd4; union { unsigned int max_min_ipin_iline; struct { unsigned char int_line; unsigned char int_pin; unsigned char min_gnt; unsigned char max_lat; } mmii; } mmii; #define _max_min_ipin_iline mmii.max_min_ipin_iline #define _int_line mmii.mmii.int_line #define _int_pin mmii.mmii.int_pin #define _min_gnt mmii.mmii.min_gnt #define _max_lat mmii.mmii.max_lat /* end of official PCI config space header */ unsigned short _ioaddr; /* config type 1 - private I/O addr */ unsigned int _pcibus; /* config type 2 - private bus id */ unsigned int _cardnum; /* config type 2 - private card number */ } pci_config_t; #endif /* AM53C974_H */