Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 3585 insertions, 0 deletions

diff --git a/drivers/scsi/nsp32.c b/drivers/scsi/nsp32.c
new file mode 100644
index 000000000000..acfead1e9f17
--- /dev/null
+++ b/drivers/scsi/nsp32.c
@@ -0,0 +1,3585 @@
+/*
+ * NinjaSCSI-32Bi Cardbus, NinjaSCSI-32UDE PCI/CardBus SCSI driver
+ * Copyright (C) 2001, 2002, 2003
+ *      YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>
+ *      GOTO Masanori <gotom@debian.or.jp>, <gotom@debian.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ *
+ * Revision History:
+ *   1.0: Initial Release.
+ *   1.1: Add /proc SDTR status.
+ *        Remove obsolete error handler nsp32_reset.
+ *        Some clean up.
+ *   1.2: PowerPC (big endian) support.
+ */
+
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/ioport.h>
+#include <linux/major.h>
+#include <linux/blkdev.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/ctype.h>
+
+#include <asm/dma.h>
+#include <asm/system.h>
+#include <asm/io.h>
+
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_ioctl.h>
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0))
+# include <linux/blk.h>
+#endif
+
+#include "nsp32.h"
+
+
+/***********************************************************************
+ * Module parameters
+ */
+static int       trans_mode = 0;	/* default: BIOS */
+module_param     (trans_mode, int, 0);
+MODULE_PARM_DESC(trans_mode, "transfer mode (0: BIOS(default) 1: Async 2: Ultra20M");
+#define ASYNC_MODE    1
+#define ULTRA20M_MODE 2
+
+static int       auto_param = 0;	/* default: ON */
+module_param     (auto_param, bool, 0);
+MODULE_PARM_DESC(auto_param, "AutoParameter mode (0: ON(default) 1: OFF)");
+
+static int       disc_priv  = 1;	/* default: OFF */
+module_param     (disc_priv, bool, 0);
+MODULE_PARM_DESC(disc_priv,  "disconnection privilege mode (0: ON 1: OFF(default))");
+
+MODULE_AUTHOR("YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>, GOTO Masanori <gotom@debian.or.jp>");
+MODULE_DESCRIPTION("Workbit NinjaSCSI-32Bi/UDE CardBus/PCI SCSI host bus adapter module");
+MODULE_LICENSE("GPL");
+
+static const char *nsp32_release_version = "1.2";
+
+
+/****************************************************************************
+ * Supported hardware
+ */
+static struct pci_device_id nsp32_pci_table[] __devinitdata = {
+	{
+		.vendor      = PCI_VENDOR_ID_IODATA,
+		.device      = PCI_DEVICE_ID_NINJASCSI_32BI_CBSC_II,
+		.subvendor   = PCI_ANY_ID,
+		.subdevice   = PCI_ANY_ID,
+		.driver_data = MODEL_IODATA,
+	},
+	{
+		.vendor      = PCI_VENDOR_ID_WORKBIT,
+		.device      = PCI_DEVICE_ID_NINJASCSI_32BI_KME,
+		.subvendor   = PCI_ANY_ID,
+		.subdevice   = PCI_ANY_ID,
+		.driver_data = MODEL_KME,
+	},
+	{
+		.vendor      = PCI_VENDOR_ID_WORKBIT,
+		.device      = PCI_DEVICE_ID_NINJASCSI_32BI_WBT,
+		.subvendor   = PCI_ANY_ID,
+		.subdevice   = PCI_ANY_ID,
+		.driver_data = MODEL_WORKBIT,
+	},
+	{
+		.vendor      = PCI_VENDOR_ID_WORKBIT,
+		.device      = PCI_DEVICE_ID_WORKBIT_STANDARD,
+		.subvendor   = PCI_ANY_ID,
+		.subdevice   = PCI_ANY_ID,
+		.driver_data = MODEL_PCI_WORKBIT,
+	},
+	{
+		.vendor      = PCI_VENDOR_ID_WORKBIT,
+		.device      = PCI_DEVICE_ID_NINJASCSI_32BI_LOGITEC,
+		.subvendor   = PCI_ANY_ID,
+		.subdevice   = PCI_ANY_ID,
+		.driver_data = MODEL_LOGITEC,
+	},
+	{
+		.vendor      = PCI_VENDOR_ID_WORKBIT,
+		.device      = PCI_DEVICE_ID_NINJASCSI_32BIB_LOGITEC,
+		.subvendor   = PCI_ANY_ID,
+		.subdevice   = PCI_ANY_ID,
+		.driver_data = MODEL_PCI_LOGITEC,
+	},
+	{
+		.vendor      = PCI_VENDOR_ID_WORKBIT,
+		.device      = PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO,
+		.subvendor   = PCI_ANY_ID,
+		.subdevice   = PCI_ANY_ID,
+		.driver_data = MODEL_PCI_MELCO,
+	},
+	{
+		.vendor      = PCI_VENDOR_ID_WORKBIT,
+		.device      = PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO_II,
+		.subvendor   = PCI_ANY_ID,
+		.subdevice   = PCI_ANY_ID,
+		.driver_data = MODEL_PCI_MELCO,
+	},
+	{0,0,},
+};
+MODULE_DEVICE_TABLE(pci, nsp32_pci_table);
+
+static nsp32_hw_data nsp32_data_base;  /* probe <-> detect glue */
+
+
+/*
+ * Period/AckWidth speed conversion table
+ *
+ * Note: This period/ackwidth speed table must be in descending order.
+ */
+static nsp32_sync_table nsp32_sync_table_40M[] = {
+     /* {PNo, AW,   SP,   EP, SREQ smpl}  Speed(MB/s) Period AckWidth */
+	{0x1,  0, 0x0c, 0x0c, SMPL_40M},  /*  20.0 :  50ns,  25ns */
+	{0x2,  0, 0x0d, 0x18, SMPL_40M},  /*  13.3 :  75ns,  25ns */
+	{0x3,  1, 0x19, 0x19, SMPL_40M},  /*  10.0 : 100ns,  50ns */
+	{0x4,  1, 0x1a, 0x1f, SMPL_20M},  /*   8.0 : 125ns,  50ns */
+	{0x5,  2, 0x20, 0x25, SMPL_20M},  /*   6.7 : 150ns,  75ns */
+	{0x6,  2, 0x26, 0x31, SMPL_20M},  /*   5.7 : 175ns,  75ns */
+	{0x7,  3, 0x32, 0x32, SMPL_20M},  /*   5.0 : 200ns, 100ns */
+	{0x8,  3, 0x33, 0x38, SMPL_10M},  /*   4.4 : 225ns, 100ns */
+	{0x9,  3, 0x39, 0x3e, SMPL_10M},  /*   4.0 : 250ns, 100ns */
+};
+
+static nsp32_sync_table nsp32_sync_table_20M[] = {
+	{0x1,  0, 0x19, 0x19, SMPL_40M},  /* 10.0 : 100ns,  50ns */
+	{0x2,  0, 0x1a, 0x25, SMPL_20M},  /*  6.7 : 150ns,  50ns */
+	{0x3,  1, 0x26, 0x32, SMPL_20M},  /*  5.0 : 200ns, 100ns */
+	{0x4,  1, 0x33, 0x3e, SMPL_10M},  /*  4.0 : 250ns, 100ns */
+	{0x5,  2, 0x3f, 0x4b, SMPL_10M},  /*  3.3 : 300ns, 150ns */
+	{0x6,  2, 0x4c, 0x57, SMPL_10M},  /*  2.8 : 350ns, 150ns */
+	{0x7,  3, 0x58, 0x64, SMPL_10M},  /*  2.5 : 400ns, 200ns */
+	{0x8,  3, 0x65, 0x70, SMPL_10M},  /*  2.2 : 450ns, 200ns */
+	{0x9,  3, 0x71, 0x7d, SMPL_10M},  /*  2.0 : 500ns, 200ns */
+};
+
+static nsp32_sync_table nsp32_sync_table_pci[] = {
+	{0x1,  0, 0x0c, 0x0f, SMPL_40M},  /* 16.6 :  60ns,  30ns */
+	{0x2,  0, 0x10, 0x16, SMPL_40M},  /* 11.1 :  90ns,  30ns */
+	{0x3,  1, 0x17, 0x1e, SMPL_20M},  /*  8.3 : 120ns,  60ns */
+	{0x4,  1, 0x1f, 0x25, SMPL_20M},  /*  6.7 : 150ns,  60ns */
+	{0x5,  2, 0x26, 0x2d, SMPL_20M},  /*  5.6 : 180ns,  90ns */
+	{0x6,  2, 0x2e, 0x34, SMPL_10M},  /*  4.8 : 210ns,  90ns */
+	{0x7,  3, 0x35, 0x3c, SMPL_10M},  /*  4.2 : 240ns, 120ns */
+	{0x8,  3, 0x3d, 0x43, SMPL_10M},  /*  3.7 : 270ns, 120ns */
+	{0x9,  3, 0x44, 0x4b, SMPL_10M},  /*  3.3 : 300ns, 120ns */
+};
+
+/*
+ * function declaration
+ */
+/* module entry point */
+static int  __devinit nsp32_probe (struct pci_dev *, const struct pci_device_id *);
+static void __devexit nsp32_remove(struct pci_dev *);
+static int  __init    init_nsp32  (void);
+static void __exit    exit_nsp32  (void);
+
+/* struct Scsi_Host_Template */
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
+static int         nsp32_proc_info   (struct Scsi_Host *, char *, char **, off_t, int, int);
+#else
+static int         nsp32_proc_info   (char *, char **, off_t, int, int, int);
+#endif
+
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
+static int         nsp32_detect      (struct pci_dev *pdev);
+#else
+static int         nsp32_detect      (Scsi_Host_Template *);
+#endif
+static int         nsp32_queuecommand(struct scsi_cmnd *,
+		void (*done)(struct scsi_cmnd *));
+static const char *nsp32_info        (struct Scsi_Host *);
+static int         nsp32_release     (struct Scsi_Host *);
+
+/* SCSI error handler */
+static int         nsp32_eh_abort     (struct scsi_cmnd *);
+static int         nsp32_eh_bus_reset (struct scsi_cmnd *);
+static int         nsp32_eh_host_reset(struct scsi_cmnd *);
+
+/* generate SCSI message */
+static void nsp32_build_identify(struct scsi_cmnd *);
+static void nsp32_build_nop     (struct scsi_cmnd *);
+static void nsp32_build_reject  (struct scsi_cmnd *);
+static void nsp32_build_sdtr    (struct scsi_cmnd *, unsigned char, unsigned char);
+
+/* SCSI message handler */
+static int  nsp32_busfree_occur(struct scsi_cmnd *, unsigned short);
+static void nsp32_msgout_occur (struct scsi_cmnd *);
+static void nsp32_msgin_occur  (struct scsi_cmnd *, unsigned long, unsigned short);
+
+static int  nsp32_setup_sg_table    (struct scsi_cmnd *);
+static int  nsp32_selection_autopara(struct scsi_cmnd *);
+static int  nsp32_selection_autoscsi(struct scsi_cmnd *);
+static void nsp32_scsi_done         (struct scsi_cmnd *);
+static int  nsp32_arbitration       (struct scsi_cmnd *, unsigned int);
+static int  nsp32_reselection       (struct scsi_cmnd *, unsigned char);
+static void nsp32_adjust_busfree    (struct scsi_cmnd *, unsigned int);
+static void nsp32_restart_autoscsi  (struct scsi_cmnd *, unsigned short);
+
+/* SCSI SDTR */
+static void nsp32_analyze_sdtr       (struct scsi_cmnd *);
+static int  nsp32_search_period_entry(nsp32_hw_data *, nsp32_target *, unsigned char);
+static void nsp32_set_async          (nsp32_hw_data *, nsp32_target *);
+static void nsp32_set_max_sync       (nsp32_hw_data *, nsp32_target *, unsigned char *, unsigned char *);
+static void nsp32_set_sync_entry     (nsp32_hw_data *, nsp32_target *, int, unsigned char);
+
+/* SCSI bus status handler */
+static void nsp32_wait_req    (nsp32_hw_data *, int);
+static void nsp32_wait_sack   (nsp32_hw_data *, int);
+static void nsp32_sack_assert (nsp32_hw_data *);
+static void nsp32_sack_negate (nsp32_hw_data *);
+static void nsp32_do_bus_reset(nsp32_hw_data *);
+
+/* hardware interrupt handler */
+static irqreturn_t do_nsp32_isr(int, void *, struct pt_regs *);
+
+/* initialize hardware */
+static int  nsp32hw_init(nsp32_hw_data *);
+
+/* EEPROM handler */
+static        int  nsp32_getprom_param (nsp32_hw_data *);
+static        int  nsp32_getprom_at24  (nsp32_hw_data *);
+static        int  nsp32_getprom_c16   (nsp32_hw_data *);
+static        void nsp32_prom_start    (nsp32_hw_data *);
+static        void nsp32_prom_stop     (nsp32_hw_data *);
+static        int  nsp32_prom_read     (nsp32_hw_data *, int);
+static        int  nsp32_prom_read_bit (nsp32_hw_data *);
+static        void nsp32_prom_write_bit(nsp32_hw_data *, int);
+static        void nsp32_prom_set      (nsp32_hw_data *, int, int);
+static        int  nsp32_prom_get      (nsp32_hw_data *, int);
+
+/* debug/warning/info message */
+static void nsp32_message (const char *, int, char *, char *, ...);
+#ifdef NSP32_DEBUG
+static void nsp32_dmessage(const char *, int, int,    char *, ...);
+#endif
+
+/*
+ * max_sectors is currently limited up to 128.
+ */
+static struct scsi_host_template nsp32_template = {
+	.proc_name			= "nsp32",
+	.name				= "Workbit NinjaSCSI-32Bi/UDE",
+	.proc_info			= nsp32_proc_info,
+	.info				= nsp32_info,
+	.queuecommand			= nsp32_queuecommand,
+	.can_queue			= 1,
+	.sg_tablesize			= NSP32_SG_SIZE,
+	.max_sectors			= 128,
+	.cmd_per_lun			= 1,
+	.this_id			= NSP32_HOST_SCSIID,
+	.use_clustering			= DISABLE_CLUSTERING,
+	.eh_abort_handler       	= nsp32_eh_abort,
+/*	.eh_device_reset_handler	= NULL, */
+	.eh_bus_reset_handler		= nsp32_eh_bus_reset,
+	.eh_host_reset_handler		= nsp32_eh_host_reset,
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,74))
+	.detect				= nsp32_detect,
+	.release			= nsp32_release,
+#endif
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,2))
+	.use_new_eh_code        	= 1,
+#else
+/*	.highmem_io			= 1, */
+#endif
+};
+
+#include "nsp32_io.h"
+
+/***********************************************************************
+ * debug, error print
+ */
+#ifndef NSP32_DEBUG
+# define NSP32_DEBUG_MASK	      0x000000
+# define nsp32_msg(type, args...)     nsp32_message ("", 0, (type), args)
+# define nsp32_dbg(mask, args...)     /* */
+#else
+# define NSP32_DEBUG_MASK	      0xffffff
+# define nsp32_msg(type, args...) \
+	nsp32_message (__FUNCTION__, __LINE__, (type), args)
+# define nsp32_dbg(mask, args...) \
+	nsp32_dmessage(__FUNCTION__, __LINE__, (mask), args)
+#endif
+
+#define NSP32_DEBUG_QUEUECOMMAND	BIT(0)
+#define NSP32_DEBUG_REGISTER		BIT(1)
+#define NSP32_DEBUG_AUTOSCSI		BIT(2)
+#define NSP32_DEBUG_INTR		BIT(3)
+#define NSP32_DEBUG_SGLIST		BIT(4)
+#define NSP32_DEBUG_BUSFREE		BIT(5)
+#define NSP32_DEBUG_CDB_CONTENTS	BIT(6)
+#define NSP32_DEBUG_RESELECTION		BIT(7)
+#define NSP32_DEBUG_MSGINOCCUR		BIT(8)
+#define NSP32_DEBUG_EEPROM		BIT(9)
+#define NSP32_DEBUG_MSGOUTOCCUR		BIT(10)
+#define NSP32_DEBUG_BUSRESET		BIT(11)
+#define NSP32_DEBUG_RESTART		BIT(12)
+#define NSP32_DEBUG_SYNC		BIT(13)
+#define NSP32_DEBUG_WAIT		BIT(14)
+#define NSP32_DEBUG_TARGETFLAG		BIT(15)
+#define NSP32_DEBUG_PROC		BIT(16)
+#define NSP32_DEBUG_INIT		BIT(17)
+#define NSP32_SPECIAL_PRINT_REGISTER	BIT(20)
+
+#define NSP32_DEBUG_BUF_LEN		100
+
+static void nsp32_message(const char *func, int line, char *type, char *fmt, ...)
+{
+	va_list args;
+	char buf[NSP32_DEBUG_BUF_LEN];
+
+	va_start(args, fmt);
+	vsnprintf(buf, sizeof(buf), fmt, args);
+	va_end(args);
+
+#ifndef NSP32_DEBUG
+	printk("%snsp32: %s\n", type, buf);
+#else
+	printk("%snsp32: %s (%d): %s\n", type, func, line, buf);
+#endif
+}
+
+#ifdef NSP32_DEBUG
+static void nsp32_dmessage(const char *func, int line, int mask, char *fmt, ...)
+{
+	va_list args;
+	char buf[NSP32_DEBUG_BUF_LEN];
+
+	va_start(args, fmt);
+	vsnprintf(buf, sizeof(buf), fmt, args);
+	va_end(args);
+
+	if (mask & NSP32_DEBUG_MASK) {
+		printk("nsp32-debug: 0x%x %s (%d): %s\n", mask, func, line, buf);
+	}
+}
+#endif
+
+#ifdef NSP32_DEBUG
+# include "nsp32_debug.c"
+#else
+# define show_command(arg)   /* */
+# define show_busphase(arg)  /* */
+# define show_autophase(arg) /* */
+#endif
+
+/*
+ * IDENTIFY Message
+ */
+static void nsp32_build_identify(struct scsi_cmnd *SCpnt)
+{
+	nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+	int pos             = data->msgout_len;
+	int mode            = FALSE;
+
+	/* XXX: Auto DiscPriv detection is progressing... */
+	if (disc_priv == 0) {
+		/* mode = TRUE; */
+	}
+
+	data->msgoutbuf[pos] = IDENTIFY(mode, SCpnt->device->lun); pos++;
+
+	data->msgout_len = pos;
+}
+
+/*
+ * SDTR Message Routine
+ */
+static void nsp32_build_sdtr(struct scsi_cmnd    *SCpnt,
+			     unsigned char period,
+			     unsigned char offset)
+{
+	nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+	int pos             = data->msgout_len;
+
+	data->msgoutbuf[pos] = EXTENDED_MESSAGE;  pos++;
+	data->msgoutbuf[pos] = EXTENDED_SDTR_LEN; pos++;
+	data->msgoutbuf[pos] = EXTENDED_SDTR;     pos++;
+	data->msgoutbuf[pos] = period;            pos++;
+	data->msgoutbuf[pos] = offset;            pos++;
+
+	data->msgout_len = pos;
+}
+
+/*
+ * No Operation Message
+ */
+static void nsp32_build_nop(struct scsi_cmnd *SCpnt)
+{
+	nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+	int            pos  = data->msgout_len;
+
+	if (pos != 0) {
+		nsp32_msg(KERN_WARNING,
+			  "Some messages are already contained!");
+		return;
+	}
+
+	data->msgoutbuf[pos] = NOP; pos++;
+	data->msgout_len = pos;
+}
+
+/*
+ * Reject Message
+ */
+static void nsp32_build_reject(struct scsi_cmnd *SCpnt)
+{
+	nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+	int            pos  = data->msgout_len;
+
+	data->msgoutbuf[pos] = MESSAGE_REJECT; pos++;
+	data->msgout_len = pos;
+}
+	
+/*
+ * timer
+ */
+#if 0
+static void nsp32_start_timer(struct scsi_cmnd *SCpnt, int time)
+{
+	unsigned int base = SCpnt->host->io_port;
+
+	nsp32_dbg(NSP32_DEBUG_INTR, "timer=%d", time);
+
+	if (time & (~TIMER_CNT_MASK)) {
+		nsp32_dbg(NSP32_DEBUG_INTR, "timer set overflow");
+	}
+
+	nsp32_write2(base, TIMER_SET, time & TIMER_CNT_MASK);
+}
+#endif
+
+
+/*
+ * set SCSI command and other parameter to asic, and start selection phase
+ */
+static int nsp32_selection_autopara(struct scsi_cmnd *SCpnt)
+{
+	nsp32_hw_data  *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+	unsigned int	base    = SCpnt->device->host->io_port;
+	unsigned int	host_id = SCpnt->device->host->this_id;
+	unsigned char	target  = SCpnt->device->id;
+	nsp32_autoparam *param  = data->autoparam;
+	unsigned char	phase;
+	int		i, ret;
+	unsigned int	msgout;
+	u16_le	        s;
+
+	nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "in");
+
+	/*
+	 * check bus free
+	 */
+	phase = nsp32_read1(base, SCSI_BUS_MONITOR);
+	if (phase != BUSMON_BUS_FREE) {
+		nsp32_msg(KERN_WARNING, "bus busy");
+		show_busphase(phase & BUSMON_PHASE_MASK);
+		SCpnt->result = DID_BUS_BUSY << 16;
+		return FALSE;
+	}
+
+	/*
+	 * message out
+	 *
+	 * Note: If the range of msgout_len is 1 - 3, fill scsi_msgout.
+	 *       over 3 messages needs another routine.
+	 */
+	if (data->msgout_len == 0) {
+		nsp32_msg(KERN_ERR, "SCSI MsgOut without any message!");
+		SCpnt->result = DID_ERROR << 16;
+		return FALSE;
+	} else if (data->msgout_len > 0 && data->msgout_len <= 3) {
+		msgout = 0;
+		for (i = 0; i < data->msgout_len; i++) {
+			/*
+			 * the sending order of the message is:
+			 *  MCNT 3: MSG#0 -> MSG#1 -> MSG#2
+			 *  MCNT 2:          MSG#1 -> MSG#2
+			 *  MCNT 1:                   MSG#2    
+			 */
+			msgout >>= 8;
+			msgout |= ((unsigned int)(data->msgoutbuf[i]) << 24);
+		}
+		msgout |= MV_VALID;	/* MV valid */
+		msgout |= (unsigned int)data->msgout_len; /* len */
+	} else {
+		/* data->msgout_len > 3 */
+		msgout = 0;
+	}
+
+	// nsp_dbg(NSP32_DEBUG_AUTOSCSI, "sel time out=0x%x\n", nsp32_read2(base, SEL_TIME_OUT));
+	// nsp32_write2(base, SEL_TIME_OUT,   SEL_TIMEOUT_TIME);
+
+	/*
+	 * setup asic parameter
+	 */
+	memset(param, 0, sizeof(nsp32_autoparam));
+
+	/* cdb */
+	for (i = 0; i < SCpnt->cmd_len; i++) {
+		param->cdb[4 * i] = SCpnt->cmnd[i];
+	}
+
+	/* outgoing messages */
+	param->msgout = cpu_to_le32(msgout);
+
+	/* syncreg, ackwidth, target id, SREQ sampling rate */
+	param->syncreg    = data->cur_target->syncreg;
+	param->ackwidth   = data->cur_target->ackwidth;
+	param->target_id  = BIT(host_id) | BIT(target);
+	param->sample_reg = data->cur_target->sample_reg;
+
+	// nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "sample rate=0x%x\n", data->cur_target->sample_reg);
+
+	/* command control */
+	param->command_control = cpu_to_le16(CLEAR_CDB_FIFO_POINTER |
+					     AUTOSCSI_START         |
+					     AUTO_MSGIN_00_OR_04    |
+					     AUTO_MSGIN_02          |
+					     AUTO_ATN               );
+
+
+	/* transfer control */
+	s = 0;
+	switch (data->trans_method) {
+	case NSP32_TRANSFER_BUSMASTER:
+		s |= BM_START;
+		break;
+	case NSP32_TRANSFER_MMIO:
+		s |= CB_MMIO_MODE;
+		break;
+	case NSP32_TRANSFER_PIO:
+		s |= CB_IO_MODE;
+		break;
+	default:
+		nsp32_msg(KERN_ERR, "unknown trans_method");
+		break;
+	}
+	/*
+	 * OR-ed BLIEND_MODE, FIFO intr is decreased, instead of PCI bus waits.
+	 * For bus master transfer, it's taken off.
+	 */
+	s |= (TRANSFER_GO | ALL_COUNTER_CLR);
+	param->transfer_control = cpu_to_le16(s);
+
+	/* sg table addr */
+	param->sgt_pointer = cpu_to_le32(data->cur_lunt->sglun_paddr);
+
+	/*
+	 * transfer parameter to ASIC
+	 */
+	nsp32_write4(base, SGT_ADR,         data->auto_paddr);
+	nsp32_write2(base, COMMAND_CONTROL, CLEAR_CDB_FIFO_POINTER |
+		                            AUTO_PARAMETER         );
+
+	/*
+	 * Check arbitration
+	 */
+	ret = nsp32_arbitration(SCpnt, base);
+
+	return ret;
+}
+
+
+/*
+ * Selection with AUTO SCSI (without AUTO PARAMETER)
+ */
+static int nsp32_selection_autoscsi(struct scsi_cmnd *SCpnt)
+{
+	nsp32_hw_data  *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+	unsigned int	base    = SCpnt->device->host->io_port;
+	unsigned int	host_id = SCpnt->device->host->this_id;
+	unsigned char	target  = SCpnt->device->id;
+	unsigned char	phase;
+	int		status;
+	unsigned short	command	= 0;
+	unsigned int	msgout  = 0;
+	unsigned short	execph;
+	int		i;
+
+	nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "in");
+
+	/*
+	 * IRQ disable
+	 */
+	nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
+
+	/*
+	 * check bus line
+	 */
+	phase = nsp32_read1(base, SCSI_BUS_MONITOR);
+	if(((phase & BUSMON_BSY) == 1) || (phase & BUSMON_SEL) == 1) {
+		nsp32_msg(KERN_WARNING, "bus busy");
+		SCpnt->result = DID_BUS_BUSY << 16;
+		status = 1;
+		goto out;
+        }
+
+	/*
+	 * clear execph
+	 */
+	execph = nsp32_read2(base, SCSI_EXECUTE_PHASE);
+
+	/*
+	 * clear FIFO counter to set CDBs
+	 */
+	nsp32_write2(base, COMMAND_CONTROL, CLEAR_CDB_FIFO_POINTER);
+
+	/*
+	 * set CDB0 - CDB15
+	 */
+	for (i = 0; i < SCpnt->cmd_len; i++) {
+		nsp32_write1(base, COMMAND_DATA, SCpnt->cmnd[i]);
+        }
+	nsp32_dbg(NSP32_DEBUG_CDB_CONTENTS, "CDB[0]=[0x%x]", SCpnt->cmnd[0]);
+
+	/*
+	 * set SCSIOUT LATCH(initiator)/TARGET(target) (OR-ed) ID
+	 */
+	nsp32_write1(base, SCSI_OUT_LATCH_TARGET_ID, BIT(host_id) | BIT(target));
+
+	/*
+	 * set SCSI MSGOUT REG
+	 *
+	 * Note: If the range of msgout_len is 1 - 3, fill scsi_msgout.
+	 *       over 3 messages needs another routine.
+	 */
+	if (data->msgout_len == 0) {
+		nsp32_msg(KERN_ERR, "SCSI MsgOut without any message!");
+		SCpnt->result = DID_ERROR << 16;
+		status = 1;
+		goto out;
+	} else if (data->msgout_len > 0 && data->msgout_len <= 3) {
+		msgout = 0;
+		for (i = 0; i < data->msgout_len; i++) {
+			/*
+			 * the sending order of the message is:
+			 *  MCNT 3: MSG#0 -> MSG#1 -> MSG#2
+			 *  MCNT 2:          MSG#1 -> MSG#2
+			 *  MCNT 1:                   MSG#2    
+			 */
+			msgout >>= 8;
+			msgout |= ((unsigned int)(data->msgoutbuf[i]) << 24);
+		}
+		msgout |= MV_VALID;	/* MV valid */
+		msgout |= (unsigned int)data->msgout_len; /* len */
+		nsp32_write4(base, SCSI_MSG_OUT, msgout);
+	} else {
+		/* data->msgout_len > 3 */
+		nsp32_write4(base, SCSI_MSG_OUT, 0);
+	}
+
+	/*
+	 * set selection timeout(= 250ms)
+	 */
+	nsp32_write2(base, SEL_TIME_OUT,   SEL_TIMEOUT_TIME);
+
+	/*
+	 * set SREQ hazard killer sampling rate
+	 * 
+	 * TODO: sample_rate (BASE+0F) is 0 when internal clock = 40MHz.
+	 *      check other internal clock!
+	 */
+	nsp32_write1(base, SREQ_SMPL_RATE, data->cur_target->sample_reg);
+
+	/*
+	 * clear Arbit
+	 */
+	nsp32_write1(base, SET_ARBIT,      ARBIT_CLEAR);
+
+	/*
+	 * set SYNCREG
+	 * Don't set BM_START_ADR before setting this register.
+	 */
+	nsp32_write1(base, SYNC_REG,  data->cur_target->syncreg);
+
+	/*
+	 * set ACKWIDTH
+	 */
+	nsp32_write1(base, ACK_WIDTH, data->cur_target->ackwidth);
+
+	nsp32_dbg(NSP32_DEBUG_AUTOSCSI,
+		  "syncreg=0x%x, ackwidth=0x%x, sgtpaddr=0x%x, id=0x%x",
+		  nsp32_read1(base, SYNC_REG), nsp32_read1(base, ACK_WIDTH),
+		  nsp32_read4(base, SGT_ADR), nsp32_read1(base, SCSI_OUT_LATCH_TARGET_ID));
+	nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "msgout_len=%d, msgout=0x%x",
+		  data->msgout_len, msgout);
+
+	/*
+	 * set SGT ADDR (physical address)
+	 */
+	nsp32_write4(base, SGT_ADR, data->cur_lunt->sglun_paddr);
+
+	/*
+	 * set TRANSFER CONTROL REG
+	 */
+	command = 0;
+	command |= (TRANSFER_GO | ALL_COUNTER_CLR);
+	if (data->trans_method & NSP32_TRANSFER_BUSMASTER) {
+		if (SCpnt->request_bufflen > 0) {
+			command |= BM_START;
+		}
+	} else if (data->trans_method & NSP32_TRANSFER_MMIO) {
+		command |= CB_MMIO_MODE;
+	} else if (data->trans_method & NSP32_TRANSFER_PIO) {
+		command |= CB_IO_MODE;
+	}
+	nsp32_write2(base, TRANSFER_CONTROL, command);
+
+	/*
+	 * start AUTO SCSI, kick off arbitration
+	 */
+	command = (CLEAR_CDB_FIFO_POINTER |
+		   AUTOSCSI_START         |
+		   AUTO_MSGIN_00_OR_04    |
+		   AUTO_MSGIN_02          |
+		   AUTO_ATN                );
+	nsp32_write2(base, COMMAND_CONTROL, command);
+
+	/*
+	 * Check arbitration
+	 */
+	status = nsp32_arbitration(SCpnt, base);
+
+ out:
+	/*
+	 * IRQ enable
+	 */
+	nsp32_write2(base, IRQ_CONTROL, 0);
+
+	return status;
+}
+
+
+/*
+ * Arbitration Status Check
+ *	
+ * Note: Arbitration counter is waited during ARBIT_GO is not lifting.
+ *	 Using udelay(1) consumes CPU time and system time, but 
+ *	 arbitration delay time is defined minimal 2.4us in SCSI
+ *	 specification, thus udelay works as coarse grained wait timer.
+ */
+static int nsp32_arbitration(struct scsi_cmnd *SCpnt, unsigned int base)
+{
+	unsigned char arbit;
+	int	      status = TRUE;
+	int	      time   = 0;
+
+	do {
+		arbit = nsp32_read1(base, ARBIT_STATUS);
+		time++;
+	} while ((arbit & (ARBIT_WIN | ARBIT_FAIL)) == 0 &&
+		 (time <= ARBIT_TIMEOUT_TIME));
+
+	nsp32_dbg(NSP32_DEBUG_AUTOSCSI,
+		  "arbit: 0x%x, delay time: %d", arbit, time);
+
+	if (arbit & ARBIT_WIN) {
+		/* Arbitration succeeded */
+		SCpnt->result = DID_OK << 16;
+		nsp32_index_write1(base, EXT_PORT, LED_ON); /* PCI LED on */
+	} else if (arbit & ARBIT_FAIL) {
+		/* Arbitration failed */
+		SCpnt->result = DID_BUS_BUSY << 16;
+		status = FALSE;
+	} else {
+		/*
+		 * unknown error or ARBIT_GO timeout,
+		 * something lock up! guess no connection.
+		 */
+		nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "arbit timeout");
+		SCpnt->result = DID_NO_CONNECT << 16;
+		status = FALSE;
+        }
+
+	/*
+	 * clear Arbit
+	 */
+	nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR);
+
+	return status;
+}
+
+
+/*
+ * reselection
+ *
+ * Note: This reselection routine is called from msgin_occur,
+ *	 reselection target id&lun must be already set.
+ *	 SCSI-2 says IDENTIFY implies RESTORE_POINTER operation.
+ */
+static int nsp32_reselection(struct scsi_cmnd *SCpnt, unsigned char newlun)
+{
+	nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+	unsigned int   host_id = SCpnt->device->host->this_id;
+	unsigned int   base    = SCpnt->device->host->io_port;
+	unsigned char  tmpid, newid;
+
+	nsp32_dbg(NSP32_DEBUG_RESELECTION, "enter");
+
+	/*
+	 * calculate reselected SCSI ID
+	 */
+	tmpid = nsp32_read1(base, RESELECT_ID);
+	tmpid &= (~BIT(host_id));
+	newid = 0;
+	while (tmpid) {
+		if (tmpid & 1) {
+			break;
+		}
+		tmpid >>= 1;
+		newid++;
+	}
+
+	/*
+	 * If reselected New ID:LUN is not existed
+	 * or current nexus is not existed, unexpected
+	 * reselection is occurred. Send reject message.
+	 */
+	if (newid >= ARRAY_SIZE(data->lunt) || newlun >= ARRAY_SIZE(data->lunt[0])) {
+		nsp32_msg(KERN_WARNING, "unknown id/lun");
+		return FALSE;
+	} else if(data->lunt[newid][newlun].SCpnt == NULL) {
+		nsp32_msg(KERN_WARNING, "no SCSI command is processing");
+		return FALSE;
+	}
+
+	data->cur_id    = newid;
+	data->cur_lun   = newlun;
+	data->cur_target = &(data->target[newid]);
+	data->cur_lunt   = &(data->lunt[newid][newlun]);
+
+	/* reset SACK/SavedACK counter (or ALL clear?) */
+	nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK);
+
+	return TRUE;
+}
+
+
+/*
+ * nsp32_setup_sg_table - build scatter gather list for transfer data
+ *			    with bus master.
+ *
+ * Note: NinjaSCSI-32Bi/UDE bus master can not transfer over 64KB at a time.
+ */
+static int nsp32_setup_sg_table(struct scsi_cmnd *SCpnt)
+{
+	nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+	struct scatterlist   *sgl;
+	nsp32_sgtable *sgt = data->cur_lunt->sglun->sgt;
+	int num, i;
+	u32_le l;
+
+	if (SCpnt->request_bufflen == 0) {
+		return TRUE;
+	}
+
+	if (sgt == NULL) {
+		nsp32_dbg(NSP32_DEBUG_SGLIST, "SGT == null");
+		return FALSE;
+	}
+
+	if (SCpnt->use_sg) {
+		sgl = (struct scatterlist *)SCpnt->request_buffer;
+		num = pci_map_sg(data->Pci, sgl, SCpnt->use_sg,
+				 SCpnt->sc_data_direction);
+		for (i = 0; i < num; i++) {
+			/*
+			 * Build nsp32_sglist, substitute sg dma addresses.
+			 */
+			sgt[i].addr = cpu_to_le32(sg_dma_address(sgl));
+			sgt[i].len  = cpu_to_le32(sg_dma_len(sgl));
+			sgl++;
+
+			if (le32_to_cpu(sgt[i].len) > 0x10000) {
+				nsp32_msg(KERN_ERR,
+					"can't transfer over 64KB at a time, size=0x%lx", le32_to_cpu(sgt[i].len));
+				return FALSE;
+			}
+			nsp32_dbg(NSP32_DEBUG_SGLIST,
+				  "num 0x%x : addr 0x%lx len 0x%lx",
+				  i,
+				  le32_to_cpu(sgt[i].addr),
+				  le32_to_cpu(sgt[i].len ));
+		}
+
+		/* set end mark */
+		l = le32_to_cpu(sgt[num-1].len);
+		sgt[num-1].len = cpu_to_le32(l | SGTEND);
+
+	} else {
+		SCpnt->SCp.have_data_in	= pci_map_single(data->Pci,
+			SCpnt->request_buffer, SCpnt->request_bufflen,
+			SCpnt->sc_data_direction);
+
+		sgt[0].addr = cpu_to_le32(SCpnt->SCp.have_data_in);
+		sgt[0].len  = cpu_to_le32(SCpnt->request_bufflen | SGTEND); /* set end mark */
+
+		if (SCpnt->request_bufflen > 0x10000) {
+			nsp32_msg(KERN_ERR,
+				  "can't transfer over 64KB at a time, size=0x%lx", SCpnt->request_bufflen);
+			return FALSE;
+		}
+		nsp32_dbg(NSP32_DEBUG_SGLIST, "single : addr 0x%lx len=0x%lx",
+			  le32_to_cpu(sgt[0].addr),
+			  le32_to_cpu(sgt[0].len ));
+	}
+
+	return TRUE;
+}
+
+static int nsp32_queuecommand(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
+{
+	nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+	nsp32_target *target;
+	nsp32_lunt   *cur_lunt;
+	int ret;
+
+	nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,
+		  "enter. target: 0x%x LUN: 0x%x cmnd: 0x%x cmndlen: 0x%x "
+		  "use_sg: 0x%x reqbuf: 0x%lx reqlen: 0x%x",
+		  SCpnt->device->id, SCpnt->device->lun, SCpnt->cmnd[0], SCpnt->cmd_len,
+		  SCpnt->use_sg, SCpnt->request_buffer, SCpnt->request_bufflen);
+
+	if (data->CurrentSC != NULL) {
+		nsp32_msg(KERN_ERR, "Currentsc != NULL. Cancel this command request");
+		data->CurrentSC = NULL;
+		SCpnt->result   = DID_NO_CONNECT << 16;
+		done(SCpnt);
+		return 0;
+	}
+
+	/* check target ID is not same as this initiator ID */
+	if (SCpnt->device->id == SCpnt->device->host->this_id) {
+		nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "terget==host???");
+		SCpnt->result = DID_BAD_TARGET << 16;
+		done(SCpnt);
+		return 0;
+	}
+
+	/* check target LUN is allowable value */
+	if (SCpnt->device->lun >= MAX_LUN) {
+		nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "no more lun");
+		SCpnt->result = DID_BAD_TARGET << 16;
+		done(SCpnt);
+		return 0;
+	}
+
+	show_command(SCpnt);
+
+	SCpnt->scsi_done     = done;
+	data->CurrentSC      = SCpnt;
+	SCpnt->SCp.Status    = CHECK_CONDITION;
+	SCpnt->SCp.Message   = 0;
+	SCpnt->resid         = SCpnt->request_bufflen;
+
+	SCpnt->SCp.ptr		    = (char *) SCpnt->request_buffer;
+	SCpnt->SCp.this_residual    = SCpnt->request_bufflen;
+	SCpnt->SCp.buffer	    = NULL;
+	SCpnt->SCp.buffers_residual = 0;
+
+	/* initialize data */
+	data->msgout_len	= 0;
+	data->msgin_len		= 0;
+	cur_lunt		= &(data->lunt[SCpnt->device->id][SCpnt->device->lun]);
+	cur_lunt->SCpnt		= SCpnt;
+	cur_lunt->save_datp	= 0;
+	cur_lunt->msgin03	= FALSE;
+	data->cur_lunt		= cur_lunt;
+	data->cur_id		= SCpnt->device->id;
+	data->cur_lun		= SCpnt->device->lun;
+
+	ret = nsp32_setup_sg_table(SCpnt);
+	if (ret == FALSE) {
+		nsp32_msg(KERN_ERR, "SGT fail");
+		SCpnt->result = DID_ERROR << 16;
+		nsp32_scsi_done(SCpnt);
+		return 0;
+	}
+
+	/* Build IDENTIFY */
+	nsp32_build_identify(SCpnt);
+
+	/* 
+	 * If target is the first time to transfer after the reset
+	 * (target don't have SDTR_DONE and SDTR_INITIATOR), sync
+	 * message SDTR is needed to do synchronous transfer.
+	 */
+	target = &data->target[SCpnt->device->id];
+	data->cur_target = target;
+
+	if (!(target->sync_flag & (SDTR_DONE | SDTR_INITIATOR | SDTR_TARGET))) {
+		unsigned char period, offset;
+
+		if (trans_mode != ASYNC_MODE) {
+			nsp32_set_max_sync(data, target, &period, &offset);
+			nsp32_build_sdtr(SCpnt, period, offset);
+			target->sync_flag |= SDTR_INITIATOR;
+		} else {
+			nsp32_set_async(data, target);
+			target->sync_flag |= SDTR_DONE;
+		}
+
+		nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,
+			  "SDTR: entry: %d start_period: 0x%x offset: 0x%x\n",
+			  target->limit_entry, period, offset);
+	} else if (target->sync_flag & SDTR_INITIATOR) {
+		/*
+		 * It was negotiating SDTR with target, sending from the
+		 * initiator, but there are no chance to remove this flag.
+		 * Set async because we don't get proper negotiation.
+		 */
+		nsp32_set_async(data, target);
+		target->sync_flag &= ~SDTR_INITIATOR;
+		target->sync_flag |= SDTR_DONE;
+
+		nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,
+			  "SDTR_INITIATOR: fall back to async");
+	} else if (target->sync_flag & SDTR_TARGET) {
+		/*
+		 * It was negotiating SDTR with target, sending from target,
+		 * but there are no chance to remove this flag.  Set async
+		 * because we don't get proper negotiation.
+		 */
+		nsp32_set_async(data, target);
+		target->sync_flag &= ~SDTR_TARGET;
+		target->sync_flag |= SDTR_DONE;
+
+		nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,
+			  "Unknown SDTR from target is reached, fall back to async.");
+	}
+
+	nsp32_dbg(NSP32_DEBUG_TARGETFLAG,
+		  "target: %d sync_flag: 0x%x syncreg: 0x%x ackwidth: 0x%x",
+		  SCpnt->device->id, target->sync_flag, target->syncreg,
+		  target->ackwidth);
+
+	/* Selection */
+	if (auto_param == 0) {
+		ret = nsp32_selection_autopara(SCpnt);
+	} else {
+		ret = nsp32_selection_autoscsi(SCpnt);
+	}
+
+	if (ret != TRUE) {
+		nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "selection fail");
+		nsp32_scsi_done(SCpnt);
+	}
+
+	return 0;
+}
+
+/* initialize asic */
+static int nsp32hw_init(nsp32_hw_data *data)
+{
+	unsigned int   base = data->BaseAddress;
+	unsigned short irq_stat;
+	unsigned long  lc_reg;
+	unsigned char  power;
+
+	lc_reg = nsp32_index_read4(base, CFG_LATE_CACHE);
+	if ((lc_reg & 0xff00) == 0) {
+		lc_reg |= (0x20 << 8);
+		nsp32_index_write2(base, CFG_LATE_CACHE, lc_reg & 0xffff);
+	}