/* * linux/drivers/acorn/scsi/acornscsi.h * * Copyright (C) 1997 Russell King * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * Acorn SCSI driver */ #ifndef ACORNSCSI_H #define ACORNSCSI_H #ifndef ASM extern int acornscsi_detect (Scsi_Host_Template *); extern int acornscsi_release (struct Scsi_Host *); extern const char *acornscsi_info (struct Scsi_Host *); extern int acornscsi_queuecmd (Scsi_Cmnd *, void (*done)(Scsi_Cmnd *)); extern int acornscsi_abort (Scsi_Cmnd *); extern int acornscsi_reset (Scsi_Cmnd *, unsigned int); extern int acornscsi_proc_info (char *, char **, off_t, int, int, int); extern int acornscsi_biosparam (Disk *, kdev_t, int []); #ifndef NULL #define NULL 0 #endif #ifndef CMD_PER_LUN #define CMD_PER_LUN 2 #endif #ifndef CAN_QUEUE #define CAN_QUEUE 16 #endif #include "linux/proc_fs.h" #include #define ACORNSCSI_3 { \ proc_info: acornscsi_proc_info, \ name: "AcornSCSI", \ detect: acornscsi_detect, \ release: acornscsi_release, /* Release */ \ info: acornscsi_info, \ queuecommand: acornscsi_queuecmd, \ abort: acornscsi_abort, \ reset: acornscsi_reset, \ bios_param: scsicam_bios_param, \ can_queue: CAN_QUEUE, /* can_queue */ \ this_id: 7, /* this id */ \ sg_tablesize: SG_ALL, /* sg_tablesize */ \ cmd_per_lun: CMD_PER_LUN, /* cmd_per_lun */ \ unchecked_isa_dma: 0, /* unchecked isa dma */ \ use_clustering: DISABLE_CLUSTERING \ } #ifndef HOSTS_C /* SBIC registers */ #define OWNID 0 #define OWNID_FS1 (1<<7) #define OWNID_FS2 (1<<6) #define OWNID_EHP (1<<4) #define OWNID_EAF (1<<3) #define CTRL 1 #define CTRL_DMAMODE (1<<7) #define CTRL_DMADBAMODE (1<<6) #define CTRL_DMABURST (1<<5) #define CTRL_DMAPOLLED 0 #define CTRL_HHP (1<<4) #define CTRL_EDI (1<<3) #define CTRL_IDI (1<<2) #define CTRL_HA (1<<1) #define CTRL_HSP (1<<0) #define TIMEOUT 2 #define TOTSECTS 3 #define TOTHEADS 4 #define TOTCYLH 5 #define TOTCYLL 6 #define LOGADDRH 7 #define LOGADDRM2 8 #define LOGADDRM1 9 #define LOGADDRL 10 #define SECTORNUM 11 #define HEADNUM 12 #define CYLH 13 #define CYLL 14 #define TARGETLUN 15 #define TARGETLUN_TLV (1<<7) #define TARGETLUN_DOK (1<<6) #define CMNDPHASE 16 #define SYNCHTRANSFER 17 #define SYNCHTRANSFER_OF0 0x00 #define SYNCHTRANSFER_OF1 0x01 #define SYNCHTRANSFER_OF2 0x02 #define SYNCHTRANSFER_OF3 0x03 #define SYNCHTRANSFER_OF4 0x04 #define SYNCHTRANSFER_OF5 0x05 #define SYNCHTRANSFER_OF6 0x06 #define SYNCHTRANSFER_OF7 0x07 #define SYNCHTRANSFER_OF8 0x08 #define SYNCHTRANSFER_OF9 0x09 #define SYNCHTRANSFER_OF10 0x0A #define SYNCHTRANSFER_OF11 0x0B #define SYNCHTRANSFER_OF12 0x0C #define SYNCHTRANSFER_8DBA 0x00 #define SYNCHTRANSFER_2DBA 0x20 #define SYNCHTRANSFER_3DBA 0x30 #define SYNCHTRANSFER_4DBA 0x40 #define SYNCHTRANSFER_5DBA 0x50 #define SYNCHTRANSFER_6DBA 0x60 #define SYNCHTRANSFER_7DBA 0x70 #define TRANSCNTH 18 #define TRANSCNTM 19 #define TRANSCNTL 20 #define DESTID 21 #define DESTID_SCC (1<<7) #define DESTID_DPD (1<<6) #define SOURCEID 22 #define SOURCEID_ER (1<<7) #define SOURCEID_ES (1<<6) #define SOURCEID_DSP (1<<5) #define SOURCEID_SIV (1<<4) #define SSR 23 #define CMND 24 #define CMND_RESET 0x00 #define CMND_ABORT 0x01 #define CMND_ASSERTATN 0x02 #define CMND_NEGATEACK 0x03 #define CMND_DISCONNECT 0x04 #define CMND_RESELECT 0x05 #define CMND_SELWITHATN 0x06 #define CMND_SELECT 0x07 #define CMND_SELECTATNTRANSFER 0x08 #define CMND_SELECTTRANSFER 0x09 #define CMND_RESELECTRXDATA 0x0A #define CMND_RESELECTTXDATA 0x0B #define CMND_WAITFORSELRECV 0x0C #define CMND_SENDSTATCMD 0x0D #define CMND_SENDDISCONNECT 0x0E #define CMND_SETIDI 0x0F #define CMND_RECEIVECMD 0x10 #define CMND_RECEIVEDTA 0x11 #define CMND_RECEIVEMSG 0x12 #define CMND_RECEIVEUSP 0x13 #define CMND_SENDCMD 0x14 #define CMND_SENDDATA 0x15 #define CMND_SENDMSG 0x16 #define CMND_SENDUSP 0x17 #define CMND_TRANSLATEADDR 0x18 #define CMND_XFERINFO 0x20 #define CMND_SBT (1<<7) #define DATA 25 #define ASR 26 #define ASR_INT (1<<7) #define ASR_LCI (1<<6) #define ASR_BSY (1<<5) #define ASR_CIP (1<<4) #define ASR_PE (1<<1) #define ASR_DBR (1<<0) /* DMAC registers */ #define INIT 0x00 #define INIT_8BIT (1) #define CHANNEL 0x80 #define CHANNEL_0 0x00 #define CHANNEL_1 0x01 #define CHANNEL_2 0x02 #define CHANNEL_3 0x03 #define TXCNTLO 0x01 #define TXCNTHI 0x81 #define TXADRLO 0x02 #define TXADRMD 0x82 #define TXADRHI 0x03 #define DEVCON0 0x04 #define DEVCON0_AKL (1<<7) #define DEVCON0_RQL (1<<6) #define DEVCON0_EXW (1<<5) #define DEVCON0_ROT (1<<4) #define DEVCON0_CMP (1<<3) #define DEVCON0_DDMA (1<<2) #define DEVCON0_AHLD (1<<1) #define DEVCON0_MTM (1<<0) #define DEVCON1 0x84 #define DEVCON1_WEV (1<<1) #define DEVCON1_BHLD (1<<0) #define MODECON 0x05 #define MODECON_WOED 0x01 #define MODECON_VERIFY 0x00 #define MODECON_READ 0x04 #define MODECON_WRITE 0x08 #define MODECON_AUTOINIT 0x10 #define MODECON_ADDRDIR 0x20 #define MODECON_DEMAND 0x00 #define MODECON_SINGLE 0x40 #define MODECON_BLOCK 0x80 #define MODECON_CASCADE 0xC0 #define STATUS 0x85 #define STATUS_TC0 (1<<0) #define STATUS_RQ0 (1<<4) #define TEMPLO 0x06 #define TEMPHI 0x86 #define REQREG 0x07 #define MASKREG 0x87 #define MASKREG_M0 0x01 #define MASKREG_M1 0x02 #define MASKREG_M2 0x04 #define MASKREG_M3 0x08 /* miscellaneous internal variables */ #define POD_SPACE(x) ((x) + 0xd0000) #define MASK_ON (MASKREG_M3|MASKREG_M2|MASKREG_M1|MASKREG_M0) #define MASK_OFF (MASKREG_M3|MASKREG_M2|MASKREG_M1) #define min(x,y) ((x) < (y) ? (x) : (y)) #define max(x,y) ((x) < (y) ? (y) : (x)) /* * SCSI driver phases */ typedef enum { PHASE_IDLE, /* we're not planning on doing anything */ PHASE_CONNECTING, /* connecting to a target */ PHASE_CONNECTED, /* connected to a target */ PHASE_MSGOUT, /* message out to device */ PHASE_RECONNECTED, /* reconnected */ PHASE_COMMANDPAUSED, /* command partly sent */ PHASE_COMMAND, /* command all sent */ PHASE_DATAOUT, /* data out to device */ PHASE_DATAIN, /* data in from device */ PHASE_STATUSIN, /* status in from device */ PHASE_MSGIN, /* message in from device */ PHASE_DONE, /* finished */ PHASE_ABORTED, /* aborted */ PHASE_DISCONNECT, /* disconnecting */ } phase_t; /* * After interrupt, what to do now */ typedef enum { INTR_IDLE, /* not expecting another IRQ */ INTR_NEXT_COMMAND, /* start next command */ INTR_PROCESSING, /* interrupt routine still processing */ } intr_ret_t; /* * DMA direction */ typedef enum { DMA_OUT, /* DMA from memory to chip */ DMA_IN /* DMA from chip to memory */ } dmadir_t; /* * Synchronous transfer state */ typedef enum { /* Synchronous transfer state */ SYNC_ASYNCHRONOUS, /* don't negociate synchronous transfers*/ SYNC_NEGOCIATE, /* start negociation */ SYNC_SENT_REQUEST, /* sent SDTR message */ SYNC_COMPLETED, /* received SDTR reply */ } syncxfer_t; /* * Command type */ typedef enum { /* command type */ CMD_READ, /* READ_6, READ_10, READ_12 */ CMD_WRITE, /* WRITE_6, WRITE_10, WRITE_12 */ CMD_MISC, /* Others */ } cmdtype_t; /* * Data phase direction */ typedef enum { /* Data direction */ DATADIR_IN, /* Data in phase expected */ DATADIR_OUT /* Data out phase expected */ } datadir_t; #include "queue.h" #include "msgqueue.h" #define STATUS_BUFFER_SIZE 32 /* * This is used to dump the previous states of the SBIC */ struct status_entry { unsigned long when; unsigned char ssr; unsigned char ph; unsigned char irq; unsigned char unused; }; #define ADD_STATUS(_q,_ssr,_ph,_irq) \ ({ \ host->status[(_q)][host->status_ptr[(_q)]].when = jiffies; \ host->status[(_q)][host->status_ptr[(_q)]].ssr = (_ssr); \ host->status[(_q)][host->status_ptr[(_q)]].ph = (_ph); \ host->status[(_q)][host->status_ptr[(_q)]].irq = (_irq); \ host->status_ptr[(_q)] = (host->status_ptr[(_q)] + 1) & (STATUS_BUFFER_SIZE - 1); \ }) /* * AcornSCSI host specific data */ typedef struct acornscsi_hostdata { /* miscellaneous */ struct Scsi_Host *host; /* host */ Scsi_Cmnd *SCpnt; /* currently processing command */ Scsi_Cmnd *origSCpnt; /* original connecting command */ /* driver information */ struct { unsigned int io_port; /* base address of WD33C93 */ unsigned int irq; /* interrupt */ phase_t phase; /* current phase */ struct { unsigned char target; /* reconnected target */ unsigned char lun; /* reconnected lun */ unsigned char tag; /* reconnected tag */ } reconnected; Scsi_Pointer SCp; /* current commands data pointer */ MsgQueue_t msgs; unsigned short last_message; /* last message to be sent */ unsigned char disconnectable:1; /* this command can be disconnected */ unsigned char interrupt:1; /* interrupt active */ } scsi; /* statistics information */ struct { unsigned int queues; unsigned int removes; unsigned int fins; unsigned int reads; unsigned int writes; unsigned int miscs; unsigned int disconnects; unsigned int aborts; unsigned int resets; } stats; /* queue handling */ struct { Queue_t issue; /* issue queue */ Queue_t disconnected; /* disconnected command queue */ } queues; /* per-device info */ struct { unsigned char sync_xfer; /* synchronous transfer (SBIC value) */ syncxfer_t sync_state; /* sync xfer negociation state */ unsigned char disconnect_ok:1; /* device can disconnect */ } device[8]; unsigned char busyluns[8]; /* array of bits indicating LUNs busy */ /* DMA info */ struct { unsigned int io_port; /* base address of DMA controller */ unsigned int io_intr_clear; /* address of DMA interrupt clear */ unsigned int free_addr; /* next free address */ unsigned int start_addr; /* start address of current transfer */ dmadir_t direction; /* dma direction */ unsigned int transferred; /* number of bytes transferred */ unsigned int xfer_start; /* scheduled DMA transfer start */ unsigned int xfer_length; /* scheduled DMA transfer length */ char *xfer_ptr; /* pointer to area */ unsigned char xfer_required:1; /* set if we need to transfer something */ unsigned char xfer_setup:1; /* set if DMA is setup */ unsigned char xfer_done:1; /* set if DMA reached end of BH list */ } dma; /* card info */ struct { unsigned int io_intr; /* base address of interrupt id reg */ unsigned int io_page; /* base address of page reg */ unsigned int io_ram; /* base address of RAM access */ unsigned char page_reg; /* current setting of page reg */ } card; unsigned char status_ptr[9]; struct status_entry status[9][STATUS_BUFFER_SIZE]; } AS_Host; #endif /* ndef HOSTS_C */ #endif /* ndef ASM */ #endif /* ACORNSCSI_H */