--- /dev/null
+/*======================================================================
+
+ 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 <../drivers/scsi/scsi.h>
+#include <scsi/scsi_host.h>
+
+#include <scsi/scsi.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_SUPPORTED_DEVICE("sd,sr,sg,st");
+#ifdef MODULE_LICENSE
+MODULE_LICENSE("GPL");
+#endif
+
+#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_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,
+ .cmd_per_lun = 1,
+ .use_clustering = DISABLE_CLUSTERING,
+};
+
+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);
+}
+
+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;
+
+ SCpnt->scsi_done(SCpnt);
+}
+
+static int nsp_queuecommand_lck(struct scsi_cmnd *SCpnt,
+ void (*done)(struct scsi_cmnd *))
+{
+#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);
+
+ SCpnt->scsi_done = done;
+
+ 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;
+
+ SCpnt->SCp.Status = CHECK_CONDITION;
+ SCpnt->SCp.Message = 0;
+ SCpnt->SCp.have_data_in = IO_UNKNOWN;
+ SCpnt->SCp.sent_command = 0;
+ SCpnt->SCp.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)) {
+ SCpnt->SCp.buffer = scsi_sglist(SCpnt);
+ SCpnt->SCp.ptr = BUFFER_ADDR;
+ SCpnt->SCp.this_residual = SCpnt->SCp.buffer->length;
+ SCpnt->SCp.buffers_residual = scsi_sg_count(SCpnt) - 1;
+ } else {
+ SCpnt->SCp.ptr = NULL;
+ SCpnt->SCp.this_residual = 0;
+ SCpnt->SCp.buffer = NULL;
+ SCpnt->SCp.buffers_residual = 0;
+ }
+
+ if (nsphw_start_selection(SCpnt) == FALSE) {
+ 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, int enabled)
+{
+ unsigned int base = data->BaseAddress;
+ unsigned char transfer_mode_reg;
+
+ //nsp_dbg(NSP_DEBUG_DATA_IO, "enabled=%d", enabled);
+
+ if (enabled != FALSE) {
+ 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 int 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);
+
+ return TRUE;
+}
+
+/*
+ * Start selection phase
+ */
+static int nsphw_start_selection(struct scsi_cmnd *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");
+ SCpnt->SCp.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");
+ SCpnt->SCp.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 *SCpnt, int phase)
+{
+ 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 && SCpnt->SCp.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 *SCpnt)
+{
+ nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata;
+ unsigned int count;
+
+ //nsp_dbg(NSP_DEBUG_DATA_IO, "in");
+
+ if (SCpnt->SCp.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");
+ SCpnt->SCp.phase = PH_DATA;
+ nsp_pio_read(SCpnt);
+ nsp_setup_fifo(data, FALSE);
+
+ return 0;
+}
+
+/*
+ * accept reselection
+ */
+static int 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);
+
+ return TRUE;
+}
+
+/*
+ * 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, dummy;
+
+ 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);
+ dummy = 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 *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, SCpnt->SCp.ptr,
+ SCpnt->SCp.this_residual, SCpnt->SCp.buffer,
+ SCpnt->SCp.buffers_residual);
+
+ time_out = 1000;
+
+ while ((time_out-- != 0) &&
+ (SCpnt->SCp.this_residual > 0 || SCpnt->SCp.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", SCpnt->SCp.ptr, SCpnt->SCp.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", SCpnt->SCp.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, SCpnt->SCp.this_residual);
+
+ switch (data->TransferMode) {
+ case MODE_IO32:
+ res &= ~(BIT(1)|BIT(0)); /* align 4 */
+ nsp_fifo32_read(base, SCpnt->SCp.ptr, res >> 2);
+ break;
+ case MODE_IO8:
+ nsp_fifo8_read (base, SCpnt->SCp.ptr, res );
+ break;
+
+ case MODE_MEM32:
+ res &= ~(BIT(1)|BIT(0)); /* align 4 */
+ nsp_mmio_fifo32_read(mmio_base, SCpnt->SCp.ptr, res >> 2);
+ break;
+
+ default:
+ nsp_dbg(NSP_DEBUG_DATA_IO, "unknown read mode");
+ return;
+ }
+
+ nsp_inc_resid(SCpnt, -res);
+ SCpnt->SCp.ptr += res;
+ SCpnt->SCp.this_residual -= res;
+ ocount += res;
+ //nsp_dbg(NSP_DEBUG_DATA_IO, "ptr=0x%p this_residual=0x%x ocount=0x%x", SCpnt->SCp.ptr, SCpnt->SCp.this_residual, ocount);
+
+ /* go to next scatter list if available */
+ if (SCpnt->SCp.this_residual == 0 &&
+ SCpnt->SCp.buffers_residual != 0 ) {
+ //nsp_dbg(NSP_DEBUG_DATA_IO, "scatterlist next timeout=%d", time_out);
+ SCpnt->SCp.buffers_residual--;
+ SCpnt->SCp.buffer++;
+ SCpnt->SCp.ptr = BUFFER_ADDR;
+ SCpnt->SCp.this_residual = SCpnt->SCp.buffer->length;
+ time_out = 1000;
+
+ //nsp_dbg(NSP_DEBUG_DATA_IO, "page: 0x%p, off: 0x%x", SCpnt->SCp.buffer->page, SCpnt->SCp.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), SCpnt->SCp.this_residual,
+ SCpnt->SCp.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)
+{
+ 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, SCpnt->SCp.ptr, SCpnt->SCp.this_residual,
+ SCpnt->SCp.buffer, SCpnt->SCp.buffers_residual,
+ scsi_get_resid(SCpnt));
+
+ time_out = 1000;
+
+ while ((time_out-- != 0) &&
+ (SCpnt->SCp.this_residual > 0 || SCpnt->SCp.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);
+ SCpnt->SCp.ptr -= res;
+ SCpnt->SCp.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(SCpnt->SCp.this_residual, WFIFO_CRIT);
+
+ //nsp_dbg(NSP_DEBUG_DATA_IO, "ptr=0x%p this=0x%x res=0x%x", SCpnt->SCp.ptr, SCpnt->SCp.this_residual, res);
+ switch (data->TransferMode) {
+ case MODE_IO32:
+ res &= ~(BIT(1)|BIT(0)); /* align 4 */
+ nsp_fifo32_write(base, SCpnt->SCp.ptr, res >> 2);
+ break;
+ case MODE_IO8:
+ nsp_fifo8_write (base, SCpnt->SCp.ptr, res );
+ break;
+
+ case MODE_MEM32:
+ res &= ~(BIT(1)|BIT(0)); /* align 4 */
+ nsp_mmio_fifo32_write(mmio_base, SCpnt->SCp.ptr, res >> 2);
+ break;
+
+ default:
+ nsp_dbg(NSP_DEBUG_DATA_IO, "unknown write mode");
+ break;
+ }
+
+ nsp_inc_resid(SCpnt, -res);
+ SCpnt->SCp.ptr += res;
+ SCpnt->SCp.this_residual -= res;
+ ocount += res;
+
+ /* go to next scatter list if available */
+ if (SCpnt->SCp.this_residual == 0 &&
+ SCpnt->SCp.buffers_residual != 0 ) {
+ //nsp_dbg(NSP_DEBUG_DATA_IO, "scatterlist next");
+ SCpnt->SCp.buffers_residual--;
+ SCpnt->SCp.buffer++;
+ SCpnt->SCp.ptr = BUFFER_ADDR;
+ SCpnt->SCp.this_residual = SCpnt->SCp.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;
+ 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;
+ tmpSC->result = (DID_RESET << 16) |
+ ((tmpSC->SCp.Message & 0xff) << 8) |
+ ((tmpSC->SCp.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;
+ 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);
+ if (nsp_reselected(tmpSC) != FALSE) {
+ return IRQ_HANDLED;
+ }
+ }
+
+ if ((irq_phase & (PHASE_CHANGE_IRQ | LATCHED_BUS_FREE)) == 0) {
+ return IRQ_HANDLED;
+ }
+ }
+
+ //show_phase(tmpSC);
+
+ switch(tmpSC->SCp.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;
+ tmpSC->SCp.phase = PH_SELECTED;
+ nsp_index_write(base, SCSIBUSCTRL, SCSI_ATN);
+ udelay(1);
+ nsp_index_write(base, SCSIBUSCTRL, SCSI_ATN | AUTODIRECTION | ACKENB);
+ return IRQ_HANDLED;
+
+ break;
+
+ 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;
+ }
+ /* fall thru */
+ 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 (((tmpSC->SCp.phase == PH_MSG_IN) || (tmpSC->SCp.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;
+
+ if ((tmpSC->SCp.Message == MSG_COMMAND_COMPLETE)) { /* all command complete and return status */
+ tmpSC->result = (DID_OK << 16) |
+ ((tmpSC->SCp.Message & 0xff) << 8) |
+ ((tmpSC->SCp.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;
+ }
+
+ tmpSC->SCp.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");
+
+ tmpSC->SCp.phase = PH_DATA;
+ tmpSC->SCp.have_data_in = IO_OUT;
+
+ nsp_pio_write(tmpSC);
+
+ break;
+
+ case BUSPHASE_DATA_IN:
+ nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE_DATA_IN");
+
+ tmpSC->SCp.phase = PH_DATA;
+ tmpSC->SCp.have_data_in = IO_IN;
+
+ nsp_pio_read(tmpSC);
+
+ break;
+
+ case BUSPHASE_STATUS:
+ nsp_dataphase_bypass(tmpSC);
+ nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE_STATUS");
+
+ tmpSC->SCp.phase = PH_STATUS;
+
+ tmpSC->SCp.Status = nsp_index_read(base, SCSIDATAWITHACK);
+ nsp_dbg(NSP_DEBUG_INTR, "message=0x%x status=0x%x", tmpSC->SCp.Message, tmpSC->SCp.Status);
+
+ break;
+
+ case BUSPHASE_MESSAGE_OUT:
+ nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE_MESSAGE_OUT");
+ if ((phase & BUSMON_REQ) == 0) {
+ goto timer_out;
+ }
+
+ tmpSC->SCp.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] = MSG_EXTENDED; i++;
+ data->MsgBuffer[i] = 3; i++;
+ data->MsgBuffer[i] = MSG_EXT_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;
+ }
+
+ tmpSC->SCp.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] == MSG_EXTENDED &&
+ data->MsgBuffer[1] == 3 &&
+ data->MsgBuffer[2] == MSG_EXT_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] == MSG_EXTENDED) {
+ i += (1 + data->MsgBuffer[i+1]);
+ }
+ }
+ tmpSC->SCp.Message = tmp;
+
+ nsp_dbg(NSP_DEBUG_INTR, "message=0x%x len=%d", tmpSC->SCp.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_nocache(p_dev->resource[2]->start,
+ resource_size(p_dev->resource[2]));
+ 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);
+
+ if(nsphw_init(data) == FALSE) {
+ goto cs_failed;
+ }
+
+ 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,
+};
+
+static int __init nsp_cs_init(void)
+{
+ return pcmcia_register_driver(&nsp_driver);
+}
+
+static void __exit nsp_cs_exit(void)
+{
+ pcmcia_unregister_driver(&nsp_driver);
+}
+
+
+module_init(nsp_cs_init)
+module_exit(nsp_cs_exit)
+
+/* end */
Code Review / kvmfornfv.git / blobdiff