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Diffstat (limited to 'linux/src/drivers/scsi/in2000.h')
| -rw-r--r-- | linux/src/drivers/scsi/in2000.h | 460 |
1 files changed, 460 insertions, 0 deletions
diff --git a/linux/src/drivers/scsi/in2000.h b/linux/src/drivers/scsi/in2000.h new file mode 100644 index 0000000..2a6ad29 --- /dev/null +++ b/linux/src/drivers/scsi/in2000.h @@ -0,0 +1,460 @@ +/* + * in2000.h - Linux device driver definitions for the + * Always IN2000 ISA SCSI card. + * + * IMPORTANT: This file is for version 1.33 - 26/Aug/1998 + * + * Copyright (c) 1996 John Shifflett, GeoLog Consulting + * john@geolog.com + * jshiffle@netcom.com + * + * 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, 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. + * + */ + +#ifndef IN2000_H +#define IN2000_H + +#include <asm/io.h> + +#define PROC_INTERFACE /* add code for /proc/scsi/in2000/xxx interface */ +#ifdef PROC_INTERFACE +#define PROC_STATISTICS /* add code for keeping various real time stats */ +#endif + +#define SYNC_DEBUG /* extra info on sync negotiation printed */ +#define DEBUGGING_ON /* enable command-line debugging bitmask */ +#define DEBUG_DEFAULTS 0 /* default bitmask - change from command-line */ + +#define FAST_READ_IO /* No problems with these on my machine */ +#define FAST_WRITE_IO + +#ifdef DEBUGGING_ON +#define DB(f,a) if (hostdata->args & (f)) a; +#define CHECK_NULL(p,s) /* if (!(p)) {printk("\n"); while (1) printk("NP:%s\r",(s));} */ +#else +#define DB(f,a) +#define CHECK_NULL(p,s) +#endif + +#define uchar unsigned char + +#define read1_io(a) (inb(hostdata->io_base+(a))) +#define read2_io(a) (inw(hostdata->io_base+(a))) +#define write1_io(b,a) (outb((b),hostdata->io_base+(a))) +#define write2_io(w,a) (outw((w),hostdata->io_base+(a))) + +/* These inline assembly defines are derived from a patch + * sent to me by Bill Earnest. He's done a lot of very + * valuable thinking, testing, and coding during his effort + * to squeeze more speed out of this driver. I really think + * that we are doing IO at close to the maximum now with + * the fifo. (And yes, insw uses 'edi' while outsw uses + * 'esi'. Thanks Bill!) + */ + +#define FAST_READ2_IO() \ + __asm__ __volatile__ ("\n \ + cld \n \ + orl %%ecx, %%ecx \n \ + jz 1f \n \ + rep \n \ + insw %%dx \n \ +1: " \ + : "=D" (sp) /* output */ \ + : "d" (f), "D" (sp), "c" (i) /* input */ \ + : "edx", "ecx", "edi" ) /* trashed */ + +#define FAST_WRITE2_IO() \ + __asm__ __volatile__ ("\n \ + cld \n \ + orl %%ecx, %%ecx \n \ + jz 1f \n \ + rep \n \ + outsw %%dx \n \ +1: " \ + : "=S" (sp) /* output */ \ + : "d" (f), "S" (sp), "c" (i) /* input */ \ + : "edx", "ecx", "esi" ) /* trashed */ + + +/* IN2000 io_port offsets */ +#define IO_WD_ASR 0x00 /* R - 3393 auxstat reg */ +#define ASR_INT 0x80 +#define ASR_LCI 0x40 +#define ASR_BSY 0x20 +#define ASR_CIP 0x10 +#define ASR_PE 0x02 +#define ASR_DBR 0x01 +#define IO_WD_ADDR 0x00 /* W - 3393 address reg */ +#define IO_WD_DATA 0x01 /* R/W - rest of 3393 regs */ +#define IO_FIFO 0x02 /* R/W - in2000 dual-port fifo (16 bits) */ +#define IN2000_FIFO_SIZE 2048 /* fifo capacity in bytes */ +#define IO_CARD_RESET 0x03 /* W - in2000 start master reset */ +#define IO_FIFO_COUNT 0x04 /* R - in2000 fifo counter */ +#define IO_FIFO_WRITE 0x05 /* W - clear fifo counter, start write */ +#define IO_FIFO_READ 0x07 /* W - start fifo read */ +#define IO_LED_OFF 0x08 /* W - turn off in2000 activity LED */ +#define IO_SWITCHES 0x08 /* R - read in2000 dip switch */ +#define SW_ADDR0 0x01 /* bit 0 = bit 0 of index to io addr */ +#define SW_ADDR1 0x02 /* bit 1 = bit 1 of index io addr */ +#define SW_DISINT 0x04 /* bit 2 true if ints disabled */ +#define SW_INT0 0x08 /* bit 3 = bit 0 of index to interrupt */ +#define SW_INT1 0x10 /* bit 4 = bit 1 of index to interrupt */ +#define SW_INT_SHIFT 3 /* shift right this amount to right justify int bits */ +#define SW_SYNC_DOS5 0x20 /* bit 5 used by Always BIOS */ +#define SW_FLOPPY 0x40 /* bit 6 true if floppy enabled */ +#define SW_BIT7 0x80 /* bit 7 hardwired true (ground) */ +#define IO_LED_ON 0x09 /* W - turn on in2000 activity LED */ +#define IO_HARDWARE 0x0a /* R - read in2000 hardware rev, stop reset */ +#define IO_INTR_MASK 0x0c /* W - in2000 interrupt mask reg */ +#define IMASK_WD 0x01 /* WD33c93 interrupt mask */ +#define IMASK_FIFO 0x02 /* FIFO interrupt mask */ + +/* wd register names */ +#define WD_OWN_ID 0x00 +#define WD_CONTROL 0x01 +#define WD_TIMEOUT_PERIOD 0x02 +#define WD_CDB_1 0x03 +#define WD_CDB_2 0x04 +#define WD_CDB_3 0x05 +#define WD_CDB_4 0x06 +#define WD_CDB_5 0x07 +#define WD_CDB_6 0x08 +#define WD_CDB_7 0x09 +#define WD_CDB_8 0x0a +#define WD_CDB_9 0x0b +#define WD_CDB_10 0x0c +#define WD_CDB_11 0x0d +#define WD_CDB_12 0x0e +#define WD_TARGET_LUN 0x0f +#define WD_COMMAND_PHASE 0x10 +#define WD_SYNCHRONOUS_TRANSFER 0x11 +#define WD_TRANSFER_COUNT_MSB 0x12 +#define WD_TRANSFER_COUNT 0x13 +#define WD_TRANSFER_COUNT_LSB 0x14 +#define WD_DESTINATION_ID 0x15 +#define WD_SOURCE_ID 0x16 +#define WD_SCSI_STATUS 0x17 +#define WD_COMMAND 0x18 +#define WD_DATA 0x19 +#define WD_QUEUE_TAG 0x1a +#define WD_AUXILIARY_STATUS 0x1f + +/* WD commands */ +#define WD_CMD_RESET 0x00 +#define WD_CMD_ABORT 0x01 +#define WD_CMD_ASSERT_ATN 0x02 +#define WD_CMD_NEGATE_ACK 0x03 +#define WD_CMD_DISCONNECT 0x04 +#define WD_CMD_RESELECT 0x05 +#define WD_CMD_SEL_ATN 0x06 +#define WD_CMD_SEL 0x07 +#define WD_CMD_SEL_ATN_XFER 0x08 +#define WD_CMD_SEL_XFER 0x09 +#define WD_CMD_RESEL_RECEIVE 0x0a +#define WD_CMD_RESEL_SEND 0x0b +#define WD_CMD_WAIT_SEL_RECEIVE 0x0c +#define WD_CMD_TRANS_ADDR 0x18 +#define WD_CMD_TRANS_INFO 0x20 +#define WD_CMD_TRANSFER_PAD 0x21 +#define WD_CMD_SBT_MODE 0x80 + +/* SCSI Bus Phases */ +#define PHS_DATA_OUT 0x00 +#define PHS_DATA_IN 0x01 +#define PHS_COMMAND 0x02 +#define PHS_STATUS 0x03 +#define PHS_MESS_OUT 0x06 +#define PHS_MESS_IN 0x07 + +/* Command Status Register definitions */ + + /* reset state interrupts */ +#define CSR_RESET 0x00 +#define CSR_RESET_AF 0x01 + + /* successful completion interrupts */ +#define CSR_RESELECT 0x10 +#define CSR_SELECT 0x11 +#define CSR_SEL_XFER_DONE 0x16 +#define CSR_XFER_DONE 0x18 + + /* paused or aborted interrupts */ +#define CSR_MSGIN 0x20 +#define CSR_SDP 0x21 +#define CSR_SEL_ABORT 0x22 +#define CSR_RESEL_ABORT 0x25 +#define CSR_RESEL_ABORT_AM 0x27 +#define CSR_ABORT 0x28 + + /* terminated interrupts */ +#define CSR_INVALID 0x40 +#define CSR_UNEXP_DISC 0x41 +#define CSR_TIMEOUT 0x42 +#define CSR_PARITY 0x43 +#define CSR_PARITY_ATN 0x44 +#define CSR_BAD_STATUS 0x45 +#define CSR_UNEXP 0x48 + + /* service required interrupts */ +#define CSR_RESEL 0x80 +#define CSR_RESEL_AM 0x81 +#define CSR_DISC 0x85 +#define CSR_SRV_REQ 0x88 + + /* Own ID/CDB Size register */ +#define OWNID_EAF 0x08 +#define OWNID_EHP 0x10 +#define OWNID_RAF 0x20 +#define OWNID_FS_8 0x00 +#define OWNID_FS_12 0x40 +#define OWNID_FS_16 0x80 + + /* Control register */ +#define CTRL_HSP 0x01 +#define CTRL_HA 0x02 +#define CTRL_IDI 0x04 +#define CTRL_EDI 0x08 +#define CTRL_HHP 0x10 +#define CTRL_POLLED 0x00 +#define CTRL_BURST 0x20 +#define CTRL_BUS 0x40 +#define CTRL_DMA 0x80 + + /* Timeout Period register */ +#define TIMEOUT_PERIOD_VALUE 20 /* results in 200 ms. */ + + /* Synchronous Transfer Register */ +#define STR_FSS 0x80 + + /* Destination ID register */ +#define DSTID_DPD 0x40 +#define DATA_OUT_DIR 0 +#define DATA_IN_DIR 1 +#define DSTID_SCC 0x80 + + /* Source ID register */ +#define SRCID_MASK 0x07 +#define SRCID_SIV 0x08 +#define SRCID_DSP 0x20 +#define SRCID_ES 0x40 +#define SRCID_ER 0x80 + + + +#define ILLEGAL_STATUS_BYTE 0xff + + +#define DEFAULT_SX_PER 500 /* (ns) fairly safe */ +#define DEFAULT_SX_OFF 0 /* aka async */ + +#define OPTIMUM_SX_PER 252 /* (ns) best we can do (mult-of-4) */ +#define OPTIMUM_SX_OFF 12 /* size of in2000 fifo */ + +struct sx_period { + unsigned int period_ns; + uchar reg_value; + }; + + +struct IN2000_hostdata { + struct Scsi_Host *next; + uchar chip; /* what kind of wd33c93 chip? */ + uchar microcode; /* microcode rev if 'B' */ + unsigned short io_base; /* IO port base */ + unsigned int dip_switch; /* dip switch settings */ + unsigned int hrev; /* hardware revision of card */ + volatile uchar busy[8]; /* index = target, bit = lun */ + volatile Scsi_Cmnd *input_Q; /* commands waiting to be started */ + volatile Scsi_Cmnd *selecting; /* trying to select this command */ + volatile Scsi_Cmnd *connected; /* currently connected command */ + volatile Scsi_Cmnd *disconnected_Q;/* commands waiting for reconnect */ + uchar state; /* what we are currently doing */ + uchar fifo; /* what the FIFO is up to */ + uchar level2; /* extent to which Level-2 commands are used */ + uchar disconnect; /* disconnect/reselect policy */ + unsigned int args; /* set from command-line argument */ + uchar incoming_msg[8]; /* filled during message_in phase */ + int incoming_ptr; /* mainly used with EXTENDED messages */ + uchar outgoing_msg[8]; /* send this during next message_out */ + int outgoing_len; /* length of outgoing message */ + unsigned int default_sx_per; /* default transfer period for SCSI bus */ + uchar sync_xfer[8]; /* sync_xfer reg settings per target */ + uchar sync_stat[8]; /* status of sync negotiation per target */ + uchar sync_off; /* bit mask: don't use sync with these targets */ +#ifdef PROC_INTERFACE + uchar proc; /* bit mask: what's in proc output */ +#ifdef PROC_STATISTICS + unsigned long cmd_cnt[8]; /* # of commands issued per target */ + unsigned long int_cnt; /* # of interrupts serviced */ + unsigned long disc_allowed_cnt[8]; /* # of disconnects allowed per target */ + unsigned long disc_done_cnt[8]; /* # of disconnects done per target*/ +#endif +#endif + }; + + +/* defines for hostdata->chip */ + +#define C_WD33C93 0 +#define C_WD33C93A 1 +#define C_WD33C93B 2 +#define C_UNKNOWN_CHIP 100 + +/* defines for hostdata->state */ + +#define S_UNCONNECTED 0 +#define S_SELECTING 1 +#define S_RUNNING_LEVEL2 2 +#define S_CONNECTED 3 +#define S_PRE_TMP_DISC 4 +#define S_PRE_CMP_DISC 5 + +/* defines for hostdata->fifo */ + +#define FI_FIFO_UNUSED 0 +#define FI_FIFO_READING 1 +#define FI_FIFO_WRITING 2 + +/* defines for hostdata->level2 */ +/* NOTE: only the first 3 are trustworthy at this point - + * having trouble when more than 1 device is reading/writing + * at the same time... + */ + +#define L2_NONE 0 /* no combination commands - we get lots of ints */ +#define L2_SELECT 1 /* start with SEL_ATN_XFER, but never resume it */ +#define L2_BASIC 2 /* resume after STATUS ints & RDP messages */ +#define L2_DATA 3 /* resume after DATA_IN/OUT ints */ +#define L2_MOST 4 /* resume after anything except a RESELECT int */ +#define L2_RESELECT 5 /* resume after everything, including RESELECT ints */ +#define L2_ALL 6 /* always resume */ + +/* defines for hostdata->disconnect */ + +#define DIS_NEVER 0 +#define DIS_ADAPTIVE 1 +#define DIS_ALWAYS 2 + +/* defines for hostdata->args */ + +#define DB_TEST 1<<0 +#define DB_FIFO 1<<1 +#define DB_QUEUE_COMMAND 1<<2 +#define DB_EXECUTE 1<<3 +#define DB_INTR 1<<4 +#define DB_TRANSFER 1<<5 +#define DB_MASK 0x3f + +#define A_NO_SCSI_RESET 1<<15 + + +/* defines for hostdata->sync_xfer[] */ + +#define SS_UNSET 0 +#define SS_FIRST 1 +#define SS_WAITING 2 +#define SS_SET 3 + +/* defines for hostdata->proc */ + +#define PR_VERSION 1<<0 +#define PR_INFO 1<<1 +#define PR_STATISTICS 1<<2 +#define PR_CONNECTED 1<<3 +#define PR_INPUTQ 1<<4 +#define PR_DISCQ 1<<5 +#define PR_TEST 1<<6 +#define PR_STOP 1<<7 + + +#include <linux/version.h> + +#if LINUX_VERSION_CODE < 0x020100 /* 2.0.xx */ +# define in2000__INITFUNC(function) function +# define in2000__INIT +# define in2000__INITDATA +# define CLISPIN_LOCK(flags) do { save_flags(flags); cli(); } while(0) +# define CLISPIN_UNLOCK(flags) restore_flags(flags) +#else /* 2.1.xxx */ +# include <linux/init.h> +# include <asm/spinlock.h> +# define in2000__INITFUNC(function) __initfunc(function) +# define in2000__INIT __init +# define in2000__INITDATA __initdata +# define CLISPIN_LOCK(flags) spin_lock_irqsave(&io_request_lock, flags) +# define CLISPIN_UNLOCK(flags) spin_unlock_irqrestore(&io_request_lock, flags) +#endif + + +int in2000_detect(Scsi_Host_Template *) in2000__INIT; +int in2000_queuecommand(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *)); +int in2000_abort(Scsi_Cmnd *); +void in2000_setup(char *, int *) in2000__INIT; +int in2000_proc_info(char *, char **, off_t, int, int, int); +struct proc_dir_entry proc_scsi_in2000; +int in2000_biosparam(struct scsi_disk *, kdev_t, int *); +int in2000_reset(Scsi_Cmnd *, unsigned int); + + +#define IN2000_CAN_Q 16 +#define IN2000_SG SG_ALL +#define IN2000_CPL 2 +#define IN2000_HOST_ID 7 + +#if LINUX_VERSION_CODE < 0x020100 /* 2.0.xx */ + +#define IN2000 { NULL, /* link pointer for modules */ \ + NULL, /* usage_count for modules */ \ + &proc_scsi_in2000, /* pointer to /proc/scsi directory entry */ \ + in2000_proc_info, /* pointer to proc info function */ \ + "Always IN2000", /* device name */ \ + in2000_detect, /* returns number of in2000's found */ \ + NULL, /* optional unload function for modules */ \ + NULL, /* optional misc info function */ \ + NULL, /* send scsi command, wait for completion */ \ + in2000_queuecommand, /* queue scsi command, don't wait */ \ + in2000_abort, /* abort current command */ \ + in2000_reset, /* reset scsi bus */ \ + NULL, /* slave_attach - unused */ \ + in2000_biosparam, /* figures out BIOS parameters for lilo, etc */ \ + IN2000_CAN_Q, /* max commands we can queue up */ \ + IN2000_HOST_ID, /* host-adapter scsi id */ \ + IN2000_SG, /* scatter-gather table size */ \ + IN2000_CPL, /* commands per lun */ \ + 0, /* board counter */ \ + 0, /* unchecked dma */ \ + DISABLE_CLUSTERING \ + } + +#else /* 2.1.xxx */ + +#define IN2000 { proc_dir: &proc_scsi_in2000, /* pointer to /proc/scsi directory entry */ \ + proc_info: in2000_proc_info, /* pointer to proc info function */ \ + name: "Always IN2000", /* device name */ \ + detect: in2000_detect, /* returns number of in2000's found */ \ + queuecommand: in2000_queuecommand, /* queue scsi command, don't wait */ \ + abort: in2000_abort, /* abort current command */ \ + reset: in2000_reset, /* reset scsi bus */ \ + bios_param: in2000_biosparam, /* figures out BIOS parameters for lilo, etc */ \ + can_queue: IN2000_CAN_Q, /* max commands we can queue up */ \ + this_id: IN2000_HOST_ID, /* host-adapter scsi id */ \ + sg_tablesize: IN2000_SG, /* scatter-gather table size */ \ + cmd_per_lun: IN2000_CPL, /* commands per lun */ \ + use_clustering: DISABLE_CLUSTERING, /* ENABLE_CLUSTERING may speed things up */ \ + use_new_eh_code: 0 /* new error code - not using it yet */ \ + } + +#endif + + +#endif /* IN2000_H */ |