diff options
Diffstat (limited to 'drivers/scsi/in2000.c')
| -rw-r--r-- | drivers/scsi/in2000.c | 319 |
1 files changed, 300 insertions, 19 deletions
diff --git a/drivers/scsi/in2000.c b/drivers/scsi/in2000.c index a6eb3fd88..6f24da81c 100644 --- a/drivers/scsi/in2000.c +++ b/drivers/scsi/in2000.c @@ -127,6 +127,7 @@ #include <linux/module.h> #endif +#define uchar unsigned char #define IN2000_VERSION "1.30" #define IN2000_DATE "14/Oct/1996" @@ -199,16 +200,296 @@ static char *setup_strings[] = static struct Scsi_Host *instance_list = 0; #ifdef PROC_INTERFACE -unsigned long disc_allowed_total; -unsigned long disc_taken_total; +static unsigned long disc_allowed_total; +static unsigned long disc_taken_total; #endif +/* 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 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 */ + + +/* 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_TOTALS 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 + #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))) + +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 */ + uchar proc; /* bit mask: what's in proc output */ + }; + /* 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 @@ -243,7 +524,7 @@ unsigned long disc_taken_total; : "edx", "ecx", "esi" ) /* trashed */ -inline uchar read_3393(struct IN2000_hostdata *hostdata, uchar reg_num) +static inline uchar read_3393(struct IN2000_hostdata *hostdata, uchar reg_num) { write1_io(reg_num,IO_WD_ADDR); return read1_io(IO_WD_DATA); @@ -253,14 +534,14 @@ inline uchar read_3393(struct IN2000_hostdata *hostdata, uchar reg_num) #define READ_AUX_STAT() read1_io(IO_WD_ASR) -inline void write_3393(struct IN2000_hostdata *hostdata, uchar reg_num, uchar value) +static inline void write_3393(struct IN2000_hostdata *hostdata, uchar reg_num, uchar value) { write1_io(reg_num,IO_WD_ADDR); write1_io(value,IO_WD_DATA); } -inline void write_3393_cmd(struct IN2000_hostdata *hostdata, uchar cmd) +static inline void write_3393_cmd(struct IN2000_hostdata *hostdata, uchar cmd) { /* while (READ_AUX_STAT() & ASR_CIP) printk("|");*/ @@ -269,7 +550,7 @@ inline void write_3393_cmd(struct IN2000_hostdata *hostdata, uchar cmd) } -uchar read_1_byte(struct IN2000_hostdata *hostdata) +static uchar read_1_byte(struct IN2000_hostdata *hostdata) { uchar asr, x = 0; @@ -284,7 +565,7 @@ uchar asr, x = 0; } -void write_3393_count(struct IN2000_hostdata *hostdata, unsigned long value) +static void write_3393_count(struct IN2000_hostdata *hostdata, unsigned long value) { write1_io(WD_TRANSFER_COUNT_MSB,IO_WD_ADDR); write1_io((value >> 16),IO_WD_DATA); @@ -293,7 +574,7 @@ void write_3393_count(struct IN2000_hostdata *hostdata, unsigned long value) } -unsigned long read_3393_count(struct IN2000_hostdata *hostdata) +static unsigned long read_3393_count(struct IN2000_hostdata *hostdata) { unsigned long value; @@ -356,7 +637,7 @@ int x; return 7; } -uchar calc_sync_xfer(unsigned int period, unsigned int offset) +static uchar calc_sync_xfer(unsigned int period, unsigned int offset) { uchar result; @@ -368,7 +649,7 @@ uchar result; -void in2000_execute(struct Scsi_Host *instance); +static void in2000_execute(struct Scsi_Host *instance); int in2000_queuecommand (Scsi_Cmnd *cmd, void (*done)(Scsi_Cmnd *)) { @@ -466,7 +747,7 @@ DB(DB_QUEUE_COMMAND,printk(")Q-%ld ",cmd->pid)) * the input_Q, using the first command we find that's intended * for a currently non-busy target/lun. */ -void in2000_execute (struct Scsi_Host *instance) +static void in2000_execute (struct Scsi_Host *instance) { struct IN2000_hostdata *hostdata; Scsi_Cmnd *cmd, *prev; @@ -740,7 +1021,7 @@ DB(DB_EXECUTE,printk("%s%ld)EX-2 ",(cmd->SCp.phase)?"d:":"",cmd->pid)) -void transfer_pio(uchar *buf, int cnt, +static void transfer_pio(uchar *buf, int cnt, int data_in_dir, struct IN2000_hostdata *hostdata) { uchar asr; @@ -776,7 +1057,7 @@ DB(DB_TRANSFER,printk("(%p,%d,%s)",buf,cnt,data_in_dir?"in":"out")) -void transfer_bytes(Scsi_Cmnd *cmd, int data_in_dir) +static void transfer_bytes(Scsi_Cmnd *cmd, int data_in_dir) { struct IN2000_hostdata *hostdata; unsigned short *sp; @@ -869,7 +1150,7 @@ int i; * re-think the multiple card capability.... */ -void in2000_intr (int irqnum, void * dev_id, struct pt_regs *ptregs) +static void in2000_intr (int irqnum, void * dev_id, struct pt_regs *ptregs) { struct Scsi_Host *instance; struct IN2000_hostdata *hostdata; @@ -1655,7 +1936,7 @@ DB(DB_INTR,printk("} ")) #define RESET_CARD_AND_BUS 1 #define B_FLAG 0x80 -int reset_hardware(struct Scsi_Host *instance, int type) +static int reset_hardware(struct Scsi_Host *instance, int type) { struct IN2000_hostdata *hostdata; int qt,x; @@ -1913,7 +2194,7 @@ char *p1,*p2; /* check_setup_strings() returns index if key found, 0 if not */ -int check_setup_strings(char *key, int *flags, int *val, char *buf) +static int check_setup_strings(char *key, int *flags, int *val, char *buf) { int x; char *cp; @@ -1951,21 +2232,21 @@ struct proc_dir_entry proc_scsi_in2000 = { * special macros declared in 'asm/io.h'. We use readb() and * readl() when reading from the card's BIOS area in in2000_detect(). */ -const unsigned int *bios_tab[] = { +static const unsigned int *bios_tab[] = { (unsigned int *)0xc8000, (unsigned int *)0xd0000, (unsigned int *)0xd8000, 0 }; -const unsigned short base_tab[] = { +static const unsigned short base_tab[] = { 0x220, 0x200, 0x110, 0x100, }; -const int int_tab[] = { +static const int int_tab[] = { 15, 14, 11, |