diff options
Diffstat (limited to 'drivers/scsi/pcmcia/nsp_cs.c')
| -rw-r--r-- | drivers/scsi/pcmcia/nsp_cs.c | 1760 |
1 files changed, 1760 insertions, 0 deletions
diff --git a/drivers/scsi/pcmcia/nsp_cs.c b/drivers/scsi/pcmcia/nsp_cs.c new file mode 100644 index 000000000..48acab03a --- /dev/null +++ b/drivers/scsi/pcmcia/nsp_cs.c @@ -0,0 +1,1760 @@ +/*====================================================================== + + NinjaSCSI-3 / NinjaSCSI-32Bi PCMCIA SCSI host adapter card driver + By: YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp> + + Ver.2.8 Support 32bit MMIO mode + Support Synchronous Data Transfer Request (SDTR) mode + Ver.2.0 Support 32bit PIO mode + Ver.1.1.2 Fix for scatter list buffer exceeds + Ver.1.1 Support scatter list + Ver.0.1 Initial version + + This software may be used and distributed according to the terms of + the GNU General Public License. + +======================================================================*/ + +/*********************************************************************** + This driver is for these PCcards. + + I-O DATA PCSC-F (Workbit NinjaSCSI-3) + "WBT", "NinjaSCSI-3", "R1.0" + I-O DATA CBSC-II (Workbit NinjaSCSI-32Bi in 16bit mode) + "IO DATA", "CBSC16 ", "1" + +***********************************************************************/ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/timer.h> +#include <linux/ioport.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/major.h> +#include <linux/blkdev.h> +#include <linux/stat.h> + +#include <asm/io.h> +#include <asm/irq.h> + +#include <scsi/scsi.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_ioctl.h> + +#include <pcmcia/cistpl.h> +#include <pcmcia/cisreg.h> +#include <pcmcia/ds.h> + +#include "nsp_cs.h" + +MODULE_AUTHOR("YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>"); +MODULE_DESCRIPTION("WorkBit NinjaSCSI-3 / NinjaSCSI-32Bi(16bit) PCMCIA SCSI host adapter module"); +MODULE_LICENSE("GPL"); + +#include "nsp_io.h" + +/*====================================================================*/ +/* Parameters that can be set with 'insmod' */ + +static int nsp_burst_mode = BURST_MEM32; +module_param(nsp_burst_mode, int, 0); +MODULE_PARM_DESC(nsp_burst_mode, "Burst transfer mode (0=io8, 1=io32, 2=mem32(default))"); + +/* Release IO ports after configuration? */ +static bool free_ports = 0; +module_param(free_ports, bool, 0); +MODULE_PARM_DESC(free_ports, "Release IO ports after configuration? (default: 0 (=no))"); + +static struct scsi_pointer *nsp_priv(struct scsi_cmnd *cmd) +{ + return scsi_cmd_priv(cmd); +} + +static struct scsi_host_template nsp_driver_template = { + .proc_name = "nsp_cs", + .show_info = nsp_show_info, + .name = "WorkBit NinjaSCSI-3/32Bi(16bit)", + .info = nsp_info, + .queuecommand = nsp_queuecommand, +/* .eh_abort_handler = nsp_eh_abort,*/ + .eh_bus_reset_handler = nsp_eh_bus_reset, + .eh_host_reset_handler = nsp_eh_host_reset, + .can_queue = 1, + .this_id = NSP_INITIATOR_ID, + .sg_tablesize = SG_ALL, + .dma_boundary = PAGE_SIZE - 1, + .cmd_size = sizeof(struct scsi_pointer), +}; + +static nsp_hw_data nsp_data_base; /* attach <-> detect glue */ + + + +/* + * debug, error print + */ +#ifndef NSP_DEBUG +# define NSP_DEBUG_MASK 0x000000 +# define nsp_msg(type, args...) nsp_cs_message("", 0, (type), args) +# define nsp_dbg(mask, args...) /* */ +#else +# define NSP_DEBUG_MASK 0xffffff +# define nsp_msg(type, args...) \ + nsp_cs_message (__func__, __LINE__, (type), args) +# define nsp_dbg(mask, args...) \ + nsp_cs_dmessage(__func__, __LINE__, (mask), args) +#endif + +#define NSP_DEBUG_QUEUECOMMAND BIT(0) +#define NSP_DEBUG_REGISTER BIT(1) +#define NSP_DEBUG_AUTOSCSI BIT(2) +#define NSP_DEBUG_INTR BIT(3) +#define NSP_DEBUG_SGLIST BIT(4) +#define NSP_DEBUG_BUSFREE BIT(5) +#define NSP_DEBUG_CDB_CONTENTS BIT(6) +#define NSP_DEBUG_RESELECTION BIT(7) +#define NSP_DEBUG_MSGINOCCUR BIT(8) +#define NSP_DEBUG_EEPROM BIT(9) +#define NSP_DEBUG_MSGOUTOCCUR BIT(10) +#define NSP_DEBUG_BUSRESET BIT(11) +#define NSP_DEBUG_RESTART BIT(12) +#define NSP_DEBUG_SYNC BIT(13) +#define NSP_DEBUG_WAIT BIT(14) +#define NSP_DEBUG_TARGETFLAG BIT(15) +#define NSP_DEBUG_PROC BIT(16) +#define NSP_DEBUG_INIT BIT(17) +#define NSP_DEBUG_DATA_IO BIT(18) +#define NSP_SPECIAL_PRINT_REGISTER BIT(20) + +#define NSP_DEBUG_BUF_LEN 150 + +static inline void nsp_inc_resid(struct scsi_cmnd *SCpnt, int residInc) +{ + scsi_set_resid(SCpnt, scsi_get_resid(SCpnt) + residInc); +} + +__printf(4, 5) +static void nsp_cs_message(const char *func, int line, char *type, char *fmt, ...) +{ + va_list args; + char buf[NSP_DEBUG_BUF_LEN]; + + va_start(args, fmt); + vsnprintf(buf, sizeof(buf), fmt, args); + va_end(args); + +#ifndef NSP_DEBUG + printk("%snsp_cs: %s\n", type, buf); +#else + printk("%snsp_cs: %s (%d): %s\n", type, func, line, buf); +#endif +} + +#ifdef NSP_DEBUG +static void nsp_cs_dmessage(const char *func, int line, int mask, char *fmt, ...) +{ + va_list args; + char buf[NSP_DEBUG_BUF_LEN]; + + va_start(args, fmt); + vsnprintf(buf, sizeof(buf), fmt, args); + va_end(args); + + if (mask & NSP_DEBUG_MASK) { + printk("nsp_cs-debug: 0x%x %s (%d): %s\n", mask, func, line, buf); + } +} +#endif + +/***********************************************************/ + +/*==================================================== + * Clenaup parameters and call done() functions. + * You must be set SCpnt->result before call this function. + */ +static void nsp_scsi_done(struct scsi_cmnd *SCpnt) +{ + nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; + + data->CurrentSC = NULL; + + scsi_done(SCpnt); +} + +static int nsp_queuecommand_lck(struct scsi_cmnd *const SCpnt) +{ + struct scsi_pointer *scsi_pointer = nsp_priv(SCpnt); +#ifdef NSP_DEBUG + /*unsigned int host_id = SCpnt->device->host->this_id;*/ + /*unsigned int base = SCpnt->device->host->io_port;*/ + unsigned char target = scmd_id(SCpnt); +#endif + nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; + + nsp_dbg(NSP_DEBUG_QUEUECOMMAND, + "SCpnt=0x%p target=%d lun=%llu sglist=0x%p bufflen=%d sg_count=%d", + SCpnt, target, SCpnt->device->lun, scsi_sglist(SCpnt), + scsi_bufflen(SCpnt), scsi_sg_count(SCpnt)); + //nsp_dbg(NSP_DEBUG_QUEUECOMMAND, "before CurrentSC=0x%p", data->CurrentSC); + + if (data->CurrentSC != NULL) { + nsp_msg(KERN_DEBUG, "CurrentSC!=NULL this can't be happen"); + SCpnt->result = DID_BAD_TARGET << 16; + nsp_scsi_done(SCpnt); + return 0; + } + +#if 0 + /* XXX: pcmcia-cs generates SCSI command with "scsi_info" utility. + This makes kernel crash when suspending... */ + if (data->ScsiInfo->stop != 0) { + nsp_msg(KERN_INFO, "suspending device. reject command."); + SCpnt->result = DID_BAD_TARGET << 16; + nsp_scsi_done(SCpnt); + return SCSI_MLQUEUE_HOST_BUSY; + } +#endif + + show_command(SCpnt); + + data->CurrentSC = SCpnt; + + scsi_pointer->Status = SAM_STAT_CHECK_CONDITION; + scsi_pointer->Message = 0; + scsi_pointer->have_data_in = IO_UNKNOWN; + scsi_pointer->sent_command = 0; + scsi_pointer->phase = PH_UNDETERMINED; + scsi_set_resid(SCpnt, scsi_bufflen(SCpnt)); + + /* setup scratch area + SCp.ptr : buffer pointer + SCp.this_residual : buffer length + SCp.buffer : next buffer + SCp.buffers_residual : left buffers in list + SCp.phase : current state of the command */ + if (scsi_bufflen(SCpnt)) { + scsi_pointer->buffer = scsi_sglist(SCpnt); + scsi_pointer->ptr = BUFFER_ADDR(SCpnt); + scsi_pointer->this_residual = scsi_pointer->buffer->length; + scsi_pointer->buffers_residual = scsi_sg_count(SCpnt) - 1; + } else { + scsi_pointer->ptr = NULL; + scsi_pointer->this_residual = 0; + scsi_pointer->buffer = NULL; + scsi_pointer->buffers_residual = 0; + } + + if (!nsphw_start_selection(SCpnt)) { + nsp_dbg(NSP_DEBUG_QUEUECOMMAND, "selection fail"); + SCpnt->result = DID_BUS_BUSY << 16; + nsp_scsi_done(SCpnt); + return 0; + } + + + //nsp_dbg(NSP_DEBUG_QUEUECOMMAND, "out"); +#ifdef NSP_DEBUG + data->CmdId++; +#endif + return 0; +} + +static DEF_SCSI_QCMD(nsp_queuecommand) + +/* + * setup PIO FIFO transfer mode and enable/disable to data out + */ +static void nsp_setup_fifo(nsp_hw_data *data, bool enabled) +{ + unsigned int base = data->BaseAddress; + unsigned char transfer_mode_reg; + + //nsp_dbg(NSP_DEBUG_DATA_IO, "enabled=%d", enabled); + + if (enabled) { + transfer_mode_reg = TRANSFER_GO | BRAIND; + } else { + transfer_mode_reg = 0; + } + + transfer_mode_reg |= data->TransferMode; + + nsp_index_write(base, TRANSFERMODE, transfer_mode_reg); +} + +static void nsphw_init_sync(nsp_hw_data *data) +{ + sync_data tmp_sync = { .SyncNegotiation = SYNC_NOT_YET, + .SyncPeriod = 0, + .SyncOffset = 0 + }; + int i; + + /* setup sync data */ + for ( i = 0; i < ARRAY_SIZE(data->Sync); i++ ) { + data->Sync[i] = tmp_sync; + } +} + +/* + * Initialize Ninja hardware + */ +static void nsphw_init(nsp_hw_data *data) +{ + unsigned int base = data->BaseAddress; + + nsp_dbg(NSP_DEBUG_INIT, "in base=0x%x", base); + + data->ScsiClockDiv = CLOCK_40M | FAST_20; + data->CurrentSC = NULL; + data->FifoCount = 0; + data->TransferMode = MODE_IO8; + + nsphw_init_sync(data); + + /* block all interrupts */ + nsp_write(base, IRQCONTROL, IRQCONTROL_ALLMASK); + + /* setup SCSI interface */ + nsp_write(base, IFSELECT, IF_IFSEL); + + nsp_index_write(base, SCSIIRQMODE, 0); + + nsp_index_write(base, TRANSFERMODE, MODE_IO8); + nsp_index_write(base, CLOCKDIV, data->ScsiClockDiv); + + nsp_index_write(base, PARITYCTRL, 0); + nsp_index_write(base, POINTERCLR, POINTER_CLEAR | + ACK_COUNTER_CLEAR | + REQ_COUNTER_CLEAR | + HOST_COUNTER_CLEAR); + + /* setup fifo asic */ + nsp_write(base, IFSELECT, IF_REGSEL); + nsp_index_write(base, TERMPWRCTRL, 0); + if ((nsp_index_read(base, OTHERCONTROL) & TPWR_SENSE) == 0) { + nsp_msg(KERN_INFO, "terminator power on"); + nsp_index_write(base, TERMPWRCTRL, POWER_ON); + } + + nsp_index_write(base, TIMERCOUNT, 0); + nsp_index_write(base, TIMERCOUNT, 0); /* requires 2 times!! */ + + nsp_index_write(base, SYNCREG, 0); + nsp_index_write(base, ACKWIDTH, 0); + + /* enable interrupts and ack them */ + nsp_index_write(base, SCSIIRQMODE, SCSI_PHASE_CHANGE_EI | + RESELECT_EI | + SCSI_RESET_IRQ_EI ); + nsp_write(base, IRQCONTROL, IRQCONTROL_ALLCLEAR); + + nsp_setup_fifo(data, false); +} + +/* + * Start selection phase + */ +static bool nsphw_start_selection(struct scsi_cmnd *const SCpnt) +{ + struct scsi_pointer *scsi_pointer = nsp_priv(SCpnt); + unsigned int host_id = SCpnt->device->host->this_id; + unsigned int base = SCpnt->device->host->io_port; + unsigned char target = scmd_id(SCpnt); + nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; + int time_out; + unsigned char phase, arbit; + + //nsp_dbg(NSP_DEBUG_RESELECTION, "in"); + + phase = nsp_index_read(base, SCSIBUSMON); + if(phase != BUSMON_BUS_FREE) { + //nsp_dbg(NSP_DEBUG_RESELECTION, "bus busy"); + return false; + } + + /* start arbitration */ + //nsp_dbg(NSP_DEBUG_RESELECTION, "start arbit"); + scsi_pointer->phase = PH_ARBSTART; + nsp_index_write(base, SETARBIT, ARBIT_GO); + + time_out = 1000; + do { + /* XXX: what a stupid chip! */ + arbit = nsp_index_read(base, ARBITSTATUS); + //nsp_dbg(NSP_DEBUG_RESELECTION, "arbit=%d, wait_count=%d", arbit, wait_count); + udelay(1); /* hold 1.2us */ + } while((arbit & (ARBIT_WIN | ARBIT_FAIL)) == 0 && + (time_out-- != 0)); + + if (!(arbit & ARBIT_WIN)) { + //nsp_dbg(NSP_DEBUG_RESELECTION, "arbit fail"); + nsp_index_write(base, SETARBIT, ARBIT_FLAG_CLEAR); + return false; + } + + /* assert select line */ + //nsp_dbg(NSP_DEBUG_RESELECTION, "assert SEL line"); + scsi_pointer->phase = PH_SELSTART; + udelay(3); /* wait 2.4us */ + nsp_index_write(base, SCSIDATALATCH, BIT(host_id) | BIT(target)); + nsp_index_write(base, SCSIBUSCTRL, SCSI_SEL | SCSI_BSY | SCSI_ATN); + udelay(2); /* wait >1.2us */ + nsp_index_write(base, SCSIBUSCTRL, SCSI_SEL | SCSI_BSY | SCSI_DATAOUT_ENB | SCSI_ATN); + nsp_index_write(base, SETARBIT, ARBIT_FLAG_CLEAR); + /*udelay(1);*/ /* wait >90ns */ + nsp_index_write(base, SCSIBUSCTRL, SCSI_SEL | SCSI_DATAOUT_ENB | SCSI_ATN); + + /* check selection timeout */ + nsp_start_timer(SCpnt, 1000/51); + data->SelectionTimeOut = 1; + + return true; +} + +struct nsp_sync_table { + unsigned int min_period; + unsigned int max_period; + unsigned int chip_period; + unsigned int ack_width; +}; + +static struct nsp_sync_table nsp_sync_table_40M[] = { + {0x0c, 0x0c, 0x1, 0}, /* 20MB 50ns*/ + {0x19, 0x19, 0x3, 1}, /* 10MB 100ns*/ + {0x1a, 0x25, 0x5, 2}, /* 7.5MB 150ns*/ + {0x26, 0x32, 0x7, 3}, /* 5MB 200ns*/ + { 0, 0, 0, 0}, +}; + +static struct nsp_sync_table nsp_sync_table_20M[] = { + {0x19, 0x19, 0x1, 0}, /* 10MB 100ns*/ + {0x1a, 0x25, 0x2, 0}, /* 7.5MB 150ns*/ + {0x26, 0x32, 0x3, 1}, /* 5MB 200ns*/ + { 0, 0, 0, 0}, +}; + +/* + * setup synchronous data transfer mode + */ +static int nsp_analyze_sdtr(struct scsi_cmnd *SCpnt) +{ + unsigned char target = scmd_id(SCpnt); +// unsigned char lun = SCpnt->device->lun; + nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; + sync_data *sync = &(data->Sync[target]); + struct nsp_sync_table *sync_table; + unsigned int period, offset; + int i; + + + nsp_dbg(NSP_DEBUG_SYNC, "in"); + + period = sync->SyncPeriod; + offset = sync->SyncOffset; + + nsp_dbg(NSP_DEBUG_SYNC, "period=0x%x, offset=0x%x", period, offset); + + if ((data->ScsiClockDiv & (BIT(0)|BIT(1))) == CLOCK_20M) { + sync_table = nsp_sync_table_20M; + } else { + sync_table = nsp_sync_table_40M; + } + + for ( i = 0; sync_table->max_period != 0; i++, sync_table++) { + if ( period >= sync_table->min_period && + period <= sync_table->max_period ) { + break; + } + } + + if (period != 0 && sync_table->max_period == 0) { + /* + * No proper period/offset found + */ + nsp_dbg(NSP_DEBUG_SYNC, "no proper period/offset"); + + sync->SyncPeriod = 0; + sync->SyncOffset = 0; + sync->SyncRegister = 0; + sync->AckWidth = 0; + + return false; + } + + sync->SyncRegister = (sync_table->chip_period << SYNCREG_PERIOD_SHIFT) | + (offset & SYNCREG_OFFSET_MASK); + sync->AckWidth = sync_table->ack_width; + + nsp_dbg(NSP_DEBUG_SYNC, "sync_reg=0x%x, ack_width=0x%x", sync->SyncRegister, sync->AckWidth); + + return true; +} + + +/* + * start ninja hardware timer + */ +static void nsp_start_timer(struct scsi_cmnd *SCpnt, int time) +{ + unsigned int base = SCpnt->device->host->io_port; + nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; + + //nsp_dbg(NSP_DEBUG_INTR, "in SCpnt=0x%p, time=%d", SCpnt, time); + data->TimerCount = time; + nsp_index_write(base, TIMERCOUNT, time); +} + +/* + * wait for bus phase change + */ +static int nsp_negate_signal(struct scsi_cmnd *SCpnt, unsigned char mask, + char *str) +{ + unsigned int base = SCpnt->device->host->io_port; + unsigned char reg; + int time_out; + + //nsp_dbg(NSP_DEBUG_INTR, "in"); + + time_out = 100; + + do { + reg = nsp_index_read(base, SCSIBUSMON); + if (reg == 0xff) { + break; + } + } while ((--time_out != 0) && (reg & mask) != 0); + + if (time_out == 0) { + nsp_msg(KERN_DEBUG, " %s signal off timeout", str); + } + + return 0; +} + +/* + * expect Ninja Irq + */ +static int nsp_expect_signal(struct scsi_cmnd *SCpnt, + unsigned char current_phase, + unsigned char mask) +{ + unsigned int base = SCpnt->device->host->io_port; + int time_out; + unsigned char phase, i_src; + + //nsp_dbg(NSP_DEBUG_INTR, "current_phase=0x%x, mask=0x%x", current_phase, mask); + + time_out = 100; + do { + phase = nsp_index_read(base, SCSIBUSMON); + if (phase == 0xff) { + //nsp_dbg(NSP_DEBUG_INTR, "ret -1"); + return -1; + } + i_src = nsp_read(base, IRQSTATUS); + if (i_src & IRQSTATUS_SCSI) { + //nsp_dbg(NSP_DEBUG_INTR, "ret 0 found scsi signal"); + return 0; + } + if ((phase & mask) != 0 && (phase & BUSMON_PHASE_MASK) == current_phase) { + //nsp_dbg(NSP_DEBUG_INTR, "ret 1 phase=0x%x", phase); + return 1; + } + } while(time_out-- != 0); + + //nsp_dbg(NSP_DEBUG_INTR, "timeout"); + return -1; +} + +/* + * transfer SCSI message + */ +static int nsp_xfer(struct scsi_cmnd *const SCpnt, int phase) +{ + struct scsi_pointer *scsi_pointer = nsp_priv(SCpnt); + unsigned int base = SCpnt->device->host->io_port; + nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; + char *buf = data->MsgBuffer; + int len = min(MSGBUF_SIZE, data->MsgLen); + int ptr; + int ret; + + //nsp_dbg(NSP_DEBUG_DATA_IO, "in"); + for (ptr = 0; len > 0; len--, ptr++) { + + ret = nsp_expect_signal(SCpnt, phase, BUSMON_REQ); + if (ret <= 0) { + nsp_dbg(NSP_DEBUG_DATA_IO, "xfer quit"); + return 0; + } + + /* if last byte, negate ATN */ + if (len == 1 && scsi_pointer->phase == PH_MSG_OUT) { + nsp_index_write(base, SCSIBUSCTRL, AUTODIRECTION | ACKENB); + } + + /* read & write message */ + if (phase & BUSMON_IO) { + nsp_dbg(NSP_DEBUG_DATA_IO, "read msg"); + buf[ptr] = nsp_index_read(base, SCSIDATAWITHACK); + } else { + nsp_dbg(NSP_DEBUG_DATA_IO, "write msg"); + nsp_index_write(base, SCSIDATAWITHACK, buf[ptr]); + } + nsp_negate_signal(SCpnt, BUSMON_ACK, "xfer<ack>"); + + } + return len; +} + +/* + * get extra SCSI data from fifo + */ +static int nsp_dataphase_bypass(struct scsi_cmnd *const SCpnt) +{ + struct scsi_pointer *scsi_pointer = nsp_priv(SCpnt); + nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; + unsigned int count; + + //nsp_dbg(NSP_DEBUG_DATA_IO, "in"); + + if (scsi_pointer->have_data_in != IO_IN) { + return 0; + } + + count = nsp_fifo_count(SCpnt); + if (data->FifoCount == count) { + //nsp_dbg(NSP_DEBUG_DATA_IO, "not use bypass quirk"); + return 0; + } + + /* + * XXX: NSP_QUIRK + * data phase skip only occures in case of SCSI_LOW_READ + */ + nsp_dbg(NSP_DEBUG_DATA_IO, "use bypass quirk"); + scsi_pointer->phase = PH_DATA; + nsp_pio_read(SCpnt); + nsp_setup_fifo(data, false); + + return 0; +} + +/* + * accept reselection + */ +static void nsp_reselected(struct scsi_cmnd *SCpnt) +{ + unsigned int base = SCpnt->device->host->io_port; + unsigned int host_id = SCpnt->device->host->this_id; + //nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; + unsigned char bus_reg; + unsigned char id_reg, tmp; + int target; + + nsp_dbg(NSP_DEBUG_RESELECTION, "in"); + + id_reg = nsp_index_read(base, RESELECTID); + tmp = id_reg & (~BIT(host_id)); + target = 0; + while(tmp != 0) { + if (tmp & BIT(0)) { + break; + } + tmp >>= 1; + target++; + } + + if (scmd_id(SCpnt) != target) { + nsp_msg(KERN_ERR, "XXX: reselect ID must be %d in this implementation.", target); + } + + nsp_negate_signal(SCpnt, BUSMON_SEL, "reselect<SEL>"); + + nsp_nexus(SCpnt); + bus_reg = nsp_index_read(base, SCSIBUSCTRL) & ~(SCSI_BSY | SCSI_ATN); + nsp_index_write(base, SCSIBUSCTRL, bus_reg); + nsp_index_write(base, SCSIBUSCTRL, bus_reg | AUTODIRECTION | ACKENB); +} + +/* + * count how many data transferd + */ +static int nsp_fifo_count(struct scsi_cmnd *SCpnt) +{ + unsigned int base = SCpnt->device->host->io_port; + unsigned int count; + unsigned int l, m, h; + + nsp_index_write(base, POINTERCLR, POINTER_CLEAR | ACK_COUNTER); + + l = nsp_index_read(base, TRANSFERCOUNT); + m = nsp_index_read(base, TRANSFERCOUNT); + h = nsp_index_read(base, TRANSFERCOUNT); + nsp_index_read(base, TRANSFERCOUNT); /* required this! */ + + count = (h << 16) | (m << 8) | (l << 0); + + //nsp_dbg(NSP_DEBUG_DATA_IO, "count=0x%x", count); + + return count; +} + +/* fifo size */ +#define RFIFO_CRIT 64 +#define WFIFO_CRIT 64 + +/* + * read data in DATA IN phase + */ +static void nsp_pio_read(struct scsi_cmnd *const SCpnt) +{ + struct scsi_pointer *scsi_pointer = nsp_priv(SCpnt); + unsigned int base = SCpnt->device->host->io_port; + unsigned long mmio_base = SCpnt->device->host->base; + nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; + long time_out; + int ocount, res; + unsigned char stat, fifo_stat; + + ocount = data->FifoCount; + + nsp_dbg(NSP_DEBUG_DATA_IO, "in SCpnt=0x%p resid=%d ocount=%d ptr=0x%p this_residual=%d buffers=0x%p nbuf=%d", + SCpnt, scsi_get_resid(SCpnt), ocount, scsi_pointer->ptr, + scsi_pointer->this_residual, scsi_pointer->buffer, + scsi_pointer->buffers_residual); + + time_out = 1000; + + while ((time_out-- != 0) && + (scsi_pointer->this_residual > 0 || + scsi_pointer->buffers_residual > 0)) { + + stat = nsp_index_read(base, SCSIBUSMON); + stat &= BUSMON_PHASE_MASK; + + + res = nsp_fifo_count(SCpnt) - ocount; + //nsp_dbg(NSP_DEBUG_DATA_IO, "ptr=0x%p this=0x%x ocount=0x%x res=0x%x", scsi_pointer->ptr, scsi_pointer->this_residual, ocount, res); + if (res == 0) { /* if some data available ? */ + if (stat == BUSPHASE_DATA_IN) { /* phase changed? */ + //nsp_dbg(NSP_DEBUG_DATA_IO, " wait for data this=%d", scsi_pointer->this_residual); + continue; + } else { + nsp_dbg(NSP_DEBUG_DATA_IO, "phase changed stat=0x%x", stat); + break; + } + } + + fifo_stat = nsp_read(base, FIFOSTATUS); + if ((fifo_stat & FIFOSTATUS_FULL_EMPTY) == 0 && + stat == BUSPHASE_DATA_IN) { + continue; + } + + res = min(res, scsi_pointer->this_residual); + + switch (data->TransferMode) { + case MODE_IO32: + res &= ~(BIT(1)|BIT(0)); /* align 4 */ + nsp_fifo32_read(base, scsi_pointer->ptr, res >> 2); + break; + case MODE_IO8: + nsp_fifo8_read(base, scsi_pointer->ptr, res); + break; + + case MODE_MEM32: + res &= ~(BIT(1)|BIT(0)); /* align 4 */ + nsp_mmio_fifo32_read(mmio_base, scsi_pointer->ptr, + res >> 2); + break; + + default: + nsp_dbg(NSP_DEBUG_DATA_IO, "unknown read mode"); + return; + } + + nsp_inc_resid(SCpnt, -res); + scsi_pointer->ptr += res; + scsi_pointer->this_residual -= res; + ocount += res; + //nsp_dbg(NSP_DEBUG_DATA_IO, "ptr=0x%p this_residual=0x%x ocount=0x%x", scsi_pointer->ptr, scsi_pointer->this_residual, ocount); + + /* go to next scatter list if available */ + if (scsi_pointer->this_residual == 0 && + scsi_pointer->buffers_residual != 0 ) { + //nsp_dbg(NSP_DEBUG_DATA_IO, "scatterlist next timeout=%d", time_out); + scsi_pointer->buffers_residual--; + scsi_pointer->buffer = sg_next(scsi_pointer->buffer); + scsi_pointer->ptr = BUFFER_ADDR(SCpnt); + scsi_pointer->this_residual = + scsi_pointer->buffer->length; + time_out = 1000; + + //nsp_dbg(NSP_DEBUG_DATA_IO, "page: 0x%p, off: 0x%x", scsi_pointer->buffer->page, scsi_pointer->buffer->offset); + } + } + + data->FifoCount = ocount; + + if (time_out < 0) { + nsp_msg(KERN_DEBUG, "pio read timeout resid=%d this_residual=%d buffers_residual=%d", + scsi_get_resid(SCpnt), scsi_pointer->this_residual, + scsi_pointer->buffers_residual); + } + nsp_dbg(NSP_DEBUG_DATA_IO, "read ocount=0x%x", ocount); + nsp_dbg(NSP_DEBUG_DATA_IO, "r cmd=%d resid=0x%x\n", data->CmdId, + scsi_get_resid(SCpnt)); +} + +/* + * write data in DATA OUT phase + */ +static void nsp_pio_write(struct scsi_cmnd *SCpnt) +{ + struct scsi_pointer *scsi_pointer = nsp_priv(SCpnt); + unsigned int base = SCpnt->device->host->io_port; + unsigned long mmio_base = SCpnt->device->host->base; + nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; + int time_out; + int ocount, res; + unsigned char stat; + + ocount = data->FifoCount; + + nsp_dbg(NSP_DEBUG_DATA_IO, "in fifocount=%d ptr=0x%p this_residual=%d buffers=0x%p nbuf=%d resid=0x%x", + data->FifoCount, scsi_pointer->ptr, scsi_pointer->this_residual, + scsi_pointer->buffer, scsi_pointer->buffers_residual, + scsi_get_resid(SCpnt)); + + time_out = 1000; + + while ((time_out-- != 0) && + (scsi_pointer->this_residual > 0 || + scsi_pointer->buffers_residual > 0)) { + stat = nsp_index_read(base, SCSIBUSMON); + stat &= BUSMON_PHASE_MASK; + + if (stat != BUSPHASE_DATA_OUT) { + res = ocount - nsp_fifo_count(SCpnt); + + nsp_dbg(NSP_DEBUG_DATA_IO, "phase changed stat=0x%x, res=%d\n", stat, res); + /* Put back pointer */ + nsp_inc_resid(SCpnt, res); + scsi_pointer->ptr -= res; + scsi_pointer->this_residual += res; + ocount -= res; + + break; + } + + res = ocount - nsp_fifo_count(SCpnt); + if (res > 0) { /* write all data? */ + nsp_dbg(NSP_DEBUG_DATA_IO, "wait for all data out. ocount=0x%x res=%d", ocount, res); + continue; + } + + res = min(scsi_pointer->this_residual, WFIFO_CRIT); + + //nsp_dbg(NSP_DEBUG_DATA_IO, "ptr=0x%p this=0x%x res=0x%x", scsi_pointer->ptr, scsi_pointer->this_residual, res); + switch (data->TransferMode) { + case MODE_IO32: + res &= ~(BIT(1)|BIT(0)); /* align 4 */ + nsp_fifo32_write(base, scsi_pointer->ptr, res >> 2); + break; + case MODE_IO8: + nsp_fifo8_write(base, scsi_pointer->ptr, res); + break; + + case MODE_MEM32: + res &= ~(BIT(1)|BIT(0)); /* align 4 */ + nsp_mmio_fifo32_write(mmio_base, scsi_pointer->ptr, + res >> 2); + break; + + default: + nsp_dbg(NSP_DEBUG_DATA_IO, "unknown write mode"); + break; + } + + nsp_inc_resid(SCpnt, -res); + scsi_pointer->ptr += res; + scsi_pointer->this_residual -= res; + ocount += res; + + /* go to next scatter list if available */ + if (scsi_pointer->this_residual == 0 && + scsi_pointer->buffers_residual != 0 ) { + //nsp_dbg(NSP_DEBUG_DATA_IO, "scatterlist next"); + scsi_pointer->buffers_residual--; + scsi_pointer->buffer = sg_next(scsi_pointer->buffer); + scsi_pointer->ptr = BUFFER_ADDR(SCpnt); + scsi_pointer->this_residual = + scsi_pointer->buffer->length; + time_out = 1000; + } + } + + data->FifoCount = ocount; + + if (time_out < 0) { + nsp_msg(KERN_DEBUG, "pio write timeout resid=0x%x", + scsi_get_resid(SCpnt)); + } + nsp_dbg(NSP_DEBUG_DATA_IO, "write ocount=0x%x", ocount); + nsp_dbg(NSP_DEBUG_DATA_IO, "w cmd=%d resid=0x%x\n", data->CmdId, + scsi_get_resid(SCpnt)); +} +#undef RFIFO_CRIT +#undef WFIFO_CRIT + +/* + * setup synchronous/asynchronous data transfer mode + */ +static int nsp_nexus(struct scsi_cmnd *SCpnt) +{ + unsigned int base = SCpnt->device->host->io_port; + unsigned char target = scmd_id(SCpnt); +// unsigned char lun = SCpnt->device->lun; + nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; + sync_data *sync = &(data->Sync[target]); + + //nsp_dbg(NSP_DEBUG_DATA_IO, "in SCpnt=0x%p", SCpnt); + + /* setup synch transfer registers */ + nsp_index_write(base, SYNCREG, sync->SyncRegister); + nsp_index_write(base, ACKWIDTH, sync->AckWidth); + + if (scsi_get_resid(SCpnt) % 4 != 0 || + scsi_get_resid(SCpnt) <= PAGE_SIZE ) { + data->TransferMode = MODE_IO8; + } else if (nsp_burst_mode == BURST_MEM32) { + data->TransferMode = MODE_MEM32; + } else if (nsp_burst_mode == BURST_IO32) { + data->TransferMode = MODE_IO32; + } else { + data->TransferMode = MODE_IO8; + } + + /* setup pdma fifo */ + nsp_setup_fifo(data, true); + + /* clear ack counter */ + data->FifoCount = 0; + nsp_index_write(base, POINTERCLR, POINTER_CLEAR | + ACK_COUNTER_CLEAR | + REQ_COUNTER_CLEAR | + HOST_COUNTER_CLEAR); + + return 0; +} + +#include "nsp_message.c" +/* + * interrupt handler + */ +static irqreturn_t nspintr(int irq, void *dev_id) +{ + unsigned int base; + unsigned char irq_status, irq_phase, phase; + struct scsi_cmnd *tmpSC; + struct scsi_pointer *scsi_pointer; + unsigned char target, lun; + unsigned int *sync_neg; + int i, tmp; + nsp_hw_data *data; + + + //nsp_dbg(NSP_DEBUG_INTR, "dev_id=0x%p", dev_id); + //nsp_dbg(NSP_DEBUG_INTR, "host=0x%p", ((scsi_info_t *)dev_id)->host); + + if ( dev_id != NULL && + ((scsi_info_t *)dev_id)->host != NULL ) { + scsi_info_t *info = (scsi_info_t *)dev_id; + + data = (nsp_hw_data *)info->host->hostdata; + } else { + nsp_dbg(NSP_DEBUG_INTR, "host data wrong"); + return IRQ_NONE; + } + + //nsp_dbg(NSP_DEBUG_INTR, "&nsp_data_base=0x%p, dev_id=0x%p", &nsp_data_base, dev_id); + + base = data->BaseAddress; + //nsp_dbg(NSP_DEBUG_INTR, "base=0x%x", base); + + /* + * interrupt check + */ + nsp_write(base, IRQCONTROL, IRQCONTROL_IRQDISABLE); + irq_status = nsp_read(base, IRQSTATUS); + //nsp_dbg(NSP_DEBUG_INTR, "irq_status=0x%x", irq_status); + if ((irq_status == 0xff) || ((irq_status & IRQSTATUS_MASK) == 0)) { + nsp_write(base, IRQCONTROL, 0); + //nsp_dbg(NSP_DEBUG_INTR, "no irq/shared irq"); + return IRQ_NONE; + } + + /* XXX: IMPORTANT + * Do not read an irq_phase register if no scsi phase interrupt. + * Unless, you should lose a scsi phase interrupt. + */ + phase = nsp_index_read(base, SCSIBUSMON); + if((irq_status & IRQSTATUS_SCSI) != 0) { + irq_phase = nsp_index_read(base, IRQPHASESENCE); + } else { + irq_phase = 0; + } + + //nsp_dbg(NSP_DEBUG_INTR, "irq_phase=0x%x", irq_phase); + + /* + * timer interrupt handler (scsi vs timer interrupts) + */ + //nsp_dbg(NSP_DEBUG_INTR, "timercount=%d", data->TimerCount); + if (data->TimerCount != 0) { + //nsp_dbg(NSP_DEBUG_INTR, "stop timer"); + nsp_index_write(base, TIMERCOUNT, 0); + nsp_index_write(base, TIMERCOUNT, 0); + data->TimerCount = 0; + } + + if ((irq_status & IRQSTATUS_MASK) == IRQSTATUS_TIMER && + data->SelectionTimeOut == 0) { + //nsp_dbg(NSP_DEBUG_INTR, "timer start"); + nsp_write(base, IRQCONTROL, IRQCONTROL_TIMER_CLEAR); + return IRQ_HANDLED; + } + + nsp_write(base, IRQCONTROL, IRQCONTROL_TIMER_CLEAR | IRQCONTROL_FIFO_CLEAR); + + if ((irq_status & IRQSTATUS_SCSI) && + (irq_phase & SCSI_RESET_IRQ)) { + nsp_msg(KERN_ERR, "bus reset (power off?)"); + + nsphw_init(data); + nsp_bus_reset(data); + + if(data->CurrentSC != NULL) { + tmpSC = data->CurrentSC; + scsi_pointer = nsp_priv(tmpSC); + tmpSC->result = (DID_RESET << 16) | + ((scsi_pointer->Message & 0xff) << 8) | + ((scsi_pointer->Status & 0xff) << 0); + nsp_scsi_done(tmpSC); + } + return IRQ_HANDLED; + } + + if (data->CurrentSC == NULL) { + nsp_msg(KERN_ERR, "CurrentSC==NULL irq_status=0x%x phase=0x%x irq_phase=0x%x this can't be happen. reset everything", irq_status, phase, irq_phase); + nsphw_init(data); + nsp_bus_reset(data); + return IRQ_HANDLED; + } + + tmpSC = data->CurrentSC; + scsi_pointer = nsp_priv(tmpSC); + target = tmpSC->device->id; + lun = tmpSC->device->lun; + sync_neg = &(data->Sync[target].SyncNegotiation); + + /* + * parse hardware SCSI irq reasons register + */ + if (irq_status & IRQSTATUS_SCSI) { + if (irq_phase & RESELECT_IRQ) { + nsp_dbg(NSP_DEBUG_INTR, "reselect"); + nsp_write(base, IRQCONTROL, IRQCONTROL_RESELECT_CLEAR); + nsp_reselected(tmpSC); + return IRQ_HANDLED; + } + + if ((irq_phase & (PHASE_CHANGE_IRQ | LATCHED_BUS_FREE)) == 0) { + return IRQ_HANDLED; + } + } + + //show_phase(tmpSC); + + switch (scsi_pointer->phase) { + case PH_SELSTART: + // *sync_neg = SYNC_NOT_YET; + if ((phase & BUSMON_BSY) == 0) { + //nsp_dbg(NSP_DEBUG_INTR, "selection count=%d", data->SelectionTimeOut); + if (data->SelectionTimeOut >= NSP_SELTIMEOUT) { + nsp_dbg(NSP_DEBUG_INTR, "selection time out"); + data->SelectionTimeOut = 0; + nsp_index_write(base, SCSIBUSCTRL, 0); + + tmpSC->result = DID_TIME_OUT << 16; + nsp_scsi_done(tmpSC); + + return IRQ_HANDLED; + } + data->SelectionTimeOut += 1; + nsp_start_timer(tmpSC, 1000/51); + return IRQ_HANDLED; + } + + /* attention assert */ + //nsp_dbg(NSP_DEBUG_INTR, "attention assert"); + data->SelectionTimeOut = 0; + scsi_pointer->phase = PH_SELECTED; + nsp_index_write(base, SCSIBUSCTRL, SCSI_ATN); + udelay(1); + nsp_index_write(base, SCSIBUSCTRL, SCSI_ATN | AUTODIRECTION | ACKENB); + return IRQ_HANDLED; + + case PH_RESELECT: + //nsp_dbg(NSP_DEBUG_INTR, "phase reselect"); + // *sync_neg = SYNC_NOT_YET; + if ((phase & BUSMON_PHASE_MASK) != BUSPHASE_MESSAGE_IN) { + + tmpSC->result = DID_ABORT << 16; + nsp_scsi_done(tmpSC); + return IRQ_HANDLED; + } + fallthrough; + default: + if ((irq_status & (IRQSTATUS_SCSI | IRQSTATUS_FIFO)) == 0) { + return IRQ_HANDLED; + } + break; + } + + /* + * SCSI sequencer + */ + //nsp_dbg(NSP_DEBUG_INTR, "start scsi seq"); + + /* normal disconnect */ + if ((scsi_pointer->phase == PH_MSG_IN || + scsi_pointer->phase == PH_MSG_OUT) && + (irq_phase & LATCHED_BUS_FREE) != 0) { + nsp_dbg(NSP_DEBUG_INTR, "normal disconnect irq_status=0x%x, phase=0x%x, irq_phase=0x%x", irq_status, phase, irq_phase); + + //*sync_neg = SYNC_NOT_YET; + + /* all command complete and return status */ + if (scsi_pointer->Message == COMMAND_COMPLETE) { + tmpSC->result = (DID_OK << 16) | + ((scsi_pointer->Message & 0xff) << 8) | + ((scsi_pointer->Status & 0xff) << 0); + nsp_dbg(NSP_DEBUG_INTR, "command complete result=0x%x", tmpSC->result); + nsp_scsi_done(tmpSC); + + return IRQ_HANDLED; + } + + return IRQ_HANDLED; + } + + + /* check unexpected bus free state */ + if (phase == 0) { + nsp_msg(KERN_DEBUG, "unexpected bus free. irq_status=0x%x, phase=0x%x, irq_phase=0x%x", irq_status, phase, irq_phase); + + *sync_neg = SYNC_NG; + tmpSC->result = DID_ERROR << 16; + nsp_scsi_done(tmpSC); + return IRQ_HANDLED; + } + + switch (phase & BUSMON_PHASE_MASK) { + case BUSPHASE_COMMAND: + nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE_COMMAND"); + if ((phase & BUSMON_REQ) == 0) { + nsp_dbg(NSP_DEBUG_INTR, "REQ == 0"); + return IRQ_HANDLED; + } + + scsi_pointer->phase = PH_COMMAND; + + nsp_nexus(tmpSC); + + /* write scsi command */ + nsp_dbg(NSP_DEBUG_INTR, "cmd_len=%d", tmpSC->cmd_len); + nsp_index_write(base, COMMANDCTRL, CLEAR_COMMAND_POINTER); + for (i = 0; i < tmpSC->cmd_len; i++) { + nsp_index_write(base, COMMANDDATA, tmpSC->cmnd[i]); + } + nsp_index_write(base, COMMANDCTRL, CLEAR_COMMAND_POINTER | AUTO_COMMAND_GO); + break; + + case BUSPHASE_DATA_OUT: + nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE_DATA_OUT"); + + scsi_pointer->phase = PH_DATA; + scsi_pointer->have_data_in = IO_OUT; + + nsp_pio_write(tmpSC); + + break; + + case BUSPHASE_DATA_IN: + nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE_DATA_IN"); + + scsi_pointer->phase = PH_DATA; + scsi_pointer->have_data_in = IO_IN; + + nsp_pio_read(tmpSC); + + break; + + case BUSPHASE_STATUS: + nsp_dataphase_bypass(tmpSC); + nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE_STATUS"); + + scsi_pointer->phase = PH_STATUS; + + scsi_pointer->Status = nsp_index_read(base, SCSIDATAWITHACK); + nsp_dbg(NSP_DEBUG_INTR, "message=0x%x status=0x%x", + scsi_pointer->Message, scsi_pointer->Status); + + break; + + case BUSPHASE_MESSAGE_OUT: + nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE_MESSAGE_OUT"); + if ((phase & BUSMON_REQ) == 0) { + goto timer_out; + } + + scsi_pointer->phase = PH_MSG_OUT; + + //*sync_neg = SYNC_NOT_YET; + + data->MsgLen = i = 0; + data->MsgBuffer[i] = IDENTIFY(true, lun); i++; + + if (*sync_neg == SYNC_NOT_YET) { + data->Sync[target].SyncPeriod = 0; + data->Sync[target].SyncOffset = 0; + + /**/ + data->MsgBuffer[i] = EXTENDED_MESSAGE; i++; + data->MsgBuffer[i] = 3; i++; + data->MsgBuffer[i] = EXTENDED_SDTR; i++; + data->MsgBuffer[i] = 0x0c; i++; + data->MsgBuffer[i] = 15; i++; + /**/ + } + data->MsgLen = i; + + nsp_analyze_sdtr(tmpSC); + show_message(data); + nsp_message_out(tmpSC); + break; + + case BUSPHASE_MESSAGE_IN: + nsp_dataphase_bypass(tmpSC); + nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE_MESSAGE_IN"); + if ((phase & BUSMON_REQ) == 0) { + goto timer_out; + } + + scsi_pointer->phase = PH_MSG_IN; + nsp_message_in(tmpSC); + + /**/ + if (*sync_neg == SYNC_NOT_YET) { + //nsp_dbg(NSP_DEBUG_INTR, "sync target=%d,lun=%d",target,lun); + + if (data->MsgLen >= 5 && + data->MsgBuffer[0] == EXTENDED_MESSAGE && + data->MsgBuffer[1] == 3 && + data->MsgBuffer[2] == EXTENDED_SDTR ) { + data->Sync[target].SyncPeriod = data->MsgBuffer[3]; + data->Sync[target].SyncOffset = data->MsgBuffer[4]; + //nsp_dbg(NSP_DEBUG_INTR, "sync ok, %d %d", data->MsgBuffer[3], data->MsgBuffer[4]); + *sync_neg = SYNC_OK; + } else { + data->Sync[target].SyncPeriod = 0; + data->Sync[target].SyncOffset = 0; + *sync_neg = SYNC_NG; + } + nsp_analyze_sdtr(tmpSC); + } + /**/ + + /* search last messeage byte */ + tmp = -1; + for (i = 0; i < data->MsgLen; i++) { + tmp = data->MsgBuffer[i]; + if (data->MsgBuffer[i] == EXTENDED_MESSAGE) { + i += (1 + data->MsgBuffer[i+1]); + } + } + scsi_pointer->Message = tmp; + + nsp_dbg(NSP_DEBUG_INTR, "message=0x%x len=%d", + scsi_pointer->Message, data->MsgLen); + show_message(data); + + break; + + case BUSPHASE_SELECT: + default: + nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE other"); + + break; + } + + //nsp_dbg(NSP_DEBUG_INTR, "out"); + return IRQ_HANDLED; + +timer_out: + nsp_start_timer(tmpSC, 1000/102); + return IRQ_HANDLED; +} + +#ifdef NSP_DEBUG +#include "nsp_debug.c" +#endif /* NSP_DEBUG */ + +/*----------------------------------------------------------------*/ +/* look for ninja3 card and init if found */ +/*----------------------------------------------------------------*/ +static struct Scsi_Host *nsp_detect(struct scsi_host_template *sht) +{ + struct Scsi_Host *host; /* registered host structure */ + nsp_hw_data *data_b = &nsp_data_base, *data; + + nsp_dbg(NSP_DEBUG_INIT, "this_id=%d", sht->this_id); + host = scsi_host_alloc(&nsp_driver_template, sizeof(nsp_hw_data)); + if (host == NULL) { + nsp_dbg(NSP_DEBUG_INIT, "host failed"); + return NULL; + } + + memcpy(host->hostdata, data_b, sizeof(nsp_hw_data)); + data = (nsp_hw_data *)host->hostdata; + data->ScsiInfo->host = host; +#ifdef NSP_DEBUG + data->CmdId = 0; +#endif + + nsp_dbg(NSP_DEBUG_INIT, "irq=%d,%d", data_b->IrqNumber, ((nsp_hw_data *)host->hostdata)->IrqNumber); + + host->unique_id = data->BaseAddress; + host->io_port = data->BaseAddress; + host->n_io_port = data->NumAddress; + host->irq = data->IrqNumber; + host->base = data->MmioAddress; + + spin_lock_init(&(data->Lock)); + + snprintf(data->nspinfo, + sizeof(data->nspinfo), + "NinjaSCSI-3/32Bi Driver $Revision: 1.23 $ IO:0x%04lx-0x%04lx MMIO(virt addr):0x%04lx IRQ:%02d", + host->io_port, host->io_port + host->n_io_port - 1, + host->base, + host->irq); + sht->name = data->nspinfo; + + nsp_dbg(NSP_DEBUG_INIT, "end"); + + + return host; /* detect done. */ +} + +/*----------------------------------------------------------------*/ +/* return info string */ +/*----------------------------------------------------------------*/ +static const char *nsp_info(struct Scsi_Host *shpnt) +{ + nsp_hw_data *data = (nsp_hw_data *)shpnt->hostdata; + + return data->nspinfo; +} + +static int nsp_show_info(struct seq_file *m, struct Scsi_Host *host) +{ + int id; + int speed; + unsigned long flags; + nsp_hw_data *data; + int hostno; + + hostno = host->host_no; + data = (nsp_hw_data *)host->hostdata; + + seq_puts(m, "NinjaSCSI status\n\n" + "Driver version: $Revision: 1.23 $\n"); + seq_printf(m, "SCSI host No.: %d\n", hostno); + seq_printf(m, "IRQ: %d\n", host->irq); + seq_printf(m, "IO: 0x%lx-0x%lx\n", host->io_port, host->io_port + host->n_io_port - 1); + seq_printf(m, "MMIO(virtual address): 0x%lx-0x%lx\n", host->base, host->base + data->MmioLength - 1); + seq_printf(m, "sg_tablesize: %d\n", host->sg_tablesize); + + seq_puts(m, "burst transfer mode: "); + switch (nsp_burst_mode) { + case BURST_IO8: + seq_puts(m, "io8"); + break; + case BURST_IO32: + seq_puts(m, "io32"); + break; + case BURST_MEM32: + seq_puts(m, "mem32"); + break; + default: + seq_puts(m, "???"); + break; + } + seq_putc(m, '\n'); + + + spin_lock_irqsave(&(data->Lock), flags); + seq_printf(m, "CurrentSC: 0x%p\n\n", data->CurrentSC); + spin_unlock_irqrestore(&(data->Lock), flags); + + seq_puts(m, "SDTR status\n"); + for(id = 0; id < ARRAY_SIZE(data->Sync); id++) { + + seq_printf(m, "id %d: ", id); + + if (id == host->this_id) { + seq_puts(m, "----- NinjaSCSI-3 host adapter\n"); + continue; + } + + switch(data->Sync[id].SyncNegotiation) { + case SYNC_OK: + seq_puts(m, " sync"); + break; + case SYNC_NG: + seq_puts(m, "async"); + break; + case SYNC_NOT_YET: + seq_puts(m, " none"); + break; + default: + seq_puts(m, "?????"); + break; + } + + if (data->Sync[id].SyncPeriod != 0) { + speed = 1000000 / (data->Sync[id].SyncPeriod * 4); + + seq_printf(m, " transfer %d.%dMB/s, offset %d", + speed / 1000, + speed % 1000, + data->Sync[id].SyncOffset + ); + } + seq_putc(m, '\n'); + } + return 0; +} + +/*---------------------------------------------------------------*/ +/* error handler */ +/*---------------------------------------------------------------*/ + +/* +static int nsp_eh_abort(struct scsi_cmnd *SCpnt) +{ + nsp_dbg(NSP_DEBUG_BUSRESET, "SCpnt=0x%p", SCpnt); + + return nsp_eh_bus_reset(SCpnt); +}*/ + +static int nsp_bus_reset(nsp_hw_data *data) +{ + unsigned int base = data->BaseAddress; + int i; + + nsp_write(base, IRQCONTROL, IRQCONTROL_ALLMASK); + + nsp_index_write(base, SCSIBUSCTRL, SCSI_RST); + mdelay(100); /* 100ms */ + nsp_index_write(base, SCSIBUSCTRL, 0); + for(i = 0; i < 5; i++) { + nsp_index_read(base, IRQPHASESENCE); /* dummy read */ + } + + nsphw_init_sync(data); + + nsp_write(base, IRQCONTROL, IRQCONTROL_ALLCLEAR); + + return SUCCESS; +} + +static int nsp_eh_bus_reset(struct scsi_cmnd *SCpnt) +{ + nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; + + nsp_dbg(NSP_DEBUG_BUSRESET, "SCpnt=0x%p", SCpnt); + + return nsp_bus_reset(data); +} + +static int nsp_eh_host_reset(struct scsi_cmnd *SCpnt) +{ + nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; + + nsp_dbg(NSP_DEBUG_BUSRESET, "in"); + + nsphw_init(data); + + return SUCCESS; +} + + +/********************************************************************** + PCMCIA functions +**********************************************************************/ + +static int nsp_cs_probe(struct pcmcia_device *link) +{ + scsi_info_t *info; + nsp_hw_data *data = &nsp_data_base; + int ret; + + nsp_dbg(NSP_DEBUG_INIT, "in"); + + /* Create new SCSI device */ + info = kzalloc(sizeof(*info), GFP_KERNEL); + if (info == NULL) { return -ENOMEM; } + info->p_dev = link; + link->priv = info; + data->ScsiInfo = info; + + nsp_dbg(NSP_DEBUG_INIT, "info=0x%p", info); + + ret = nsp_cs_config(link); + + nsp_dbg(NSP_DEBUG_INIT, "link=0x%p", link); + return ret; +} /* nsp_cs_attach */ + + +static void nsp_cs_detach(struct pcmcia_device *link) +{ + nsp_dbg(NSP_DEBUG_INIT, "in, link=0x%p", link); + + ((scsi_info_t *)link->priv)->stop = 1; + nsp_cs_release(link); + + kfree(link->priv); + link->priv = NULL; +} /* nsp_cs_detach */ + + +static int nsp_cs_config_check(struct pcmcia_device *p_dev, void *priv_data) +{ + nsp_hw_data *data = priv_data; + + if (p_dev->config_index == 0) + return -ENODEV; + + /* This reserves IO space but doesn't actually enable it */ + if (pcmcia_request_io(p_dev) != 0) + goto next_entry; + + if (resource_size(p_dev->resource[2])) { + p_dev->resource[2]->flags |= (WIN_DATA_WIDTH_16 | + WIN_MEMORY_TYPE_CM | + WIN_ENABLE); + if (p_dev->resource[2]->end < 0x1000) + p_dev->resource[2]->end = 0x1000; + if (pcmcia_request_window(p_dev, p_dev->resource[2], 0) != 0) + goto next_entry; + if (pcmcia_map_mem_page(p_dev, p_dev->resource[2], + p_dev->card_addr) != 0) + goto next_entry; + + data->MmioAddress = (unsigned long) + ioremap(p_dev->resource[2]->start, + resource_size(p_dev->resource[2])); + if (!data->MmioAddress) + goto next_entry; + + data->MmioLength = resource_size(p_dev->resource[2]); + } + /* If we got this far, we're cool! */ + return 0; + +next_entry: + nsp_dbg(NSP_DEBUG_INIT, "next"); + pcmcia_disable_device(p_dev); + return -ENODEV; +} + +static int nsp_cs_config(struct pcmcia_device *link) +{ + int ret; + scsi_info_t *info = link->priv; + struct Scsi_Host *host; + nsp_hw_data *data = &nsp_data_base; + + nsp_dbg(NSP_DEBUG_INIT, "in"); + + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_CHECK_VCC | + CONF_AUTO_SET_VPP | CONF_AUTO_AUDIO | CONF_AUTO_SET_IOMEM | + CONF_AUTO_SET_IO; + + ret = pcmcia_loop_config(link, nsp_cs_config_check, data); + if (ret) + goto cs_failed; + + if (pcmcia_request_irq(link, nspintr)) + goto cs_failed; + + ret = pcmcia_enable_device(link); + if (ret) + goto cs_failed; + + if (free_ports) { + if (link->resource[0]) { + release_region(link->resource[0]->start, + resource_size(link->resource[0])); + } + if (link->resource[1]) { + release_region(link->resource[1]->start, + resource_size(link->resource[1])); + } + } + + /* Set port and IRQ */ + data->BaseAddress = link->resource[0]->start; + data->NumAddress = resource_size(link->resource[0]); + data->IrqNumber = link->irq; + + nsp_dbg(NSP_DEBUG_INIT, "I/O[0x%x+0x%x] IRQ %d", + data->BaseAddress, data->NumAddress, data->IrqNumber); + + nsphw_init(data); + + host = nsp_detect(&nsp_driver_template); + + if (host == NULL) { + nsp_dbg(NSP_DEBUG_INIT, "detect failed"); + goto cs_failed; + } + + + ret = scsi_add_host (host, NULL); + if (ret) + goto cs_failed; + + scsi_scan_host(host); + + info->host = host; + + return 0; + + cs_failed: + nsp_dbg(NSP_DEBUG_INIT, "config fail"); + nsp_cs_release(link); + + return -ENODEV; +} /* nsp_cs_config */ + + +static void nsp_cs_release(struct pcmcia_device *link) +{ + scsi_info_t *info = link->priv; + nsp_hw_data *data = NULL; + + if (info->host == NULL) { + nsp_msg(KERN_DEBUG, "unexpected card release call."); + } else { + data = (nsp_hw_data *)info->host->hostdata; + } + + nsp_dbg(NSP_DEBUG_INIT, "link=0x%p", link); + + /* Unlink the device chain */ + if (info->host != NULL) { + scsi_remove_host(info->host); + } + + if (resource_size(link->resource[2])) { + if (data != NULL) { + iounmap((void *)(data->MmioAddress)); + } + } + pcmcia_disable_device(link); + + if (info->host != NULL) { + scsi_host_put(info->host); + } +} /* nsp_cs_release */ + +static int nsp_cs_suspend(struct pcmcia_device *link) +{ + scsi_info_t *info = link->priv; + nsp_hw_data *data; + + nsp_dbg(NSP_DEBUG_INIT, "event: suspend"); + + if (info->host != NULL) { + nsp_msg(KERN_INFO, "clear SDTR status"); + + data = (nsp_hw_data *)info->host->hostdata; + + nsphw_init_sync(data); + } + + info->stop = 1; + + return 0; +} + +static int nsp_cs_resume(struct pcmcia_device *link) +{ + scsi_info_t *info = link->priv; + nsp_hw_data *data; + + nsp_dbg(NSP_DEBUG_INIT, "event: resume"); + + info->stop = 0; + + if (info->host != NULL) { + nsp_msg(KERN_INFO, "reset host and bus"); + + data = (nsp_hw_data *)info->host->hostdata; + + nsphw_init (data); + nsp_bus_reset(data); + } + + return 0; +} + +/*======================================================================* + * module entry point + *====================================================================*/ +static const struct pcmcia_device_id nsp_cs_ids[] = { + PCMCIA_DEVICE_PROD_ID123("IO DATA", "CBSC16 ", "1", 0x547e66dc, 0x0d63a3fd, 0x51de003a), + PCMCIA_DEVICE_PROD_ID123("KME ", "SCSI-CARD-001", "1", 0x534c02bc, 0x52008408, 0x51de003a), + PCMCIA_DEVICE_PROD_ID123("KME ", "SCSI-CARD-002", "1", 0x534c02bc, 0xcb09d5b2, 0x51de003a), + PCMCIA_DEVICE_PROD_ID123("KME ", "SCSI-CARD-003", "1", 0x534c02bc, 0xbc0ee524, 0x51de003a), + PCMCIA_DEVICE_PROD_ID123("KME ", "SCSI-CARD-004", "1", 0x534c02bc, 0x226a7087, 0x51de003a), + PCMCIA_DEVICE_PROD_ID123("WBT", "NinjaSCSI-3", "R1.0", 0xc7ba805f, 0xfdc7c97d, 0x6973710e), + PCMCIA_DEVICE_PROD_ID123("WORKBIT", "UltraNinja-16", "1", 0x28191418, 0xb70f4b09, 0x51de003a), + PCMCIA_DEVICE_NULL +}; +MODULE_DEVICE_TABLE(pcmcia, nsp_cs_ids); + +static struct pcmcia_driver nsp_driver = { + .owner = THIS_MODULE, + .name = "nsp_cs", + .probe = nsp_cs_probe, + .remove = nsp_cs_detach, + .id_table = nsp_cs_ids, + .suspend = nsp_cs_suspend, + .resume = nsp_cs_resume, +}; +module_pcmcia_driver(nsp_driver); + +/* end */ |