Initial import

1 files changed, 392 insertions, 0 deletions

diff --git a/drivers/scsi/pcmcia/nsp_cs.h b/drivers/scsi/pcmcia/nsp_cs.h
new file mode 100644
index 000000000..afd64f0ad
--- /dev/null
+++ b/drivers/scsi/pcmcia/nsp_cs.h
@@ -0,0 +1,392 @@
+/*=======================================================/
+  Header file for nsp_cs.c
+      By: YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>
+
+    Ver.1.0 : Cut unused lines.
+    Ver 0.1 : Initial version.
+
+    This software may be used and distributed according to the terms of
+    the GNU General Public License.
+
+=========================================================*/
+
+#ifndef  __nsp_cs__
+#define  __nsp_cs__
+
+/* for debugging */
+//#define NSP_DEBUG 9
+
+/*
+#define static
+#define inline
+*/
+
+/************************************
+ * Some useful macros...
+ */
+
+/* SCSI initiator must be ID 7 */
+#define NSP_INITIATOR_ID  7
+
+#define NSP_SELTIMEOUT 200
+
+/***************************************************************************
+ * register definitions
+ ***************************************************************************/
+/*========================================================================
+ * base register
+ ========================================================================*/
+#define	IRQCONTROL	0x00  /* R */
+#  define IRQCONTROL_RESELECT_CLEAR     BIT(0)
+#  define IRQCONTROL_PHASE_CHANGE_CLEAR BIT(1)
+#  define IRQCONTROL_TIMER_CLEAR        BIT(2)
+#  define IRQCONTROL_FIFO_CLEAR         BIT(3)
+#  define IRQCONTROL_ALLMASK            0xff
+#  define IRQCONTROL_ALLCLEAR           (IRQCONTROL_RESELECT_CLEAR     | \
+					 IRQCONTROL_PHASE_CHANGE_CLEAR | \
+					 IRQCONTROL_TIMER_CLEAR        | \
+					 IRQCONTROL_FIFO_CLEAR          )
+#  define IRQCONTROL_IRQDISABLE         0xf0
+
+#define	IRQSTATUS	0x00  /* W */
+#  define IRQSTATUS_SCSI  BIT(0)
+#  define IRQSTATUS_TIMER BIT(2)
+#  define IRQSTATUS_FIFO  BIT(3)
+#  define IRQSTATUS_MASK  0x0f
+
+#define	IFSELECT	0x01 /* W */
+#  define IF_IFSEL    BIT(0)
+#  define IF_REGSEL   BIT(2)
+
+#define	FIFOSTATUS	0x01 /* R */
+#  define FIFOSTATUS_CHIP_REVISION_MASK 0x0f
+#  define FIFOSTATUS_CHIP_ID_MASK       0x70
+#  define FIFOSTATUS_FULL_EMPTY         BIT(7)
+
+#define	INDEXREG	0x02 /* R/W */
+#define	DATAREG		0x03 /* R/W */
+#define	FIFODATA	0x04 /* R/W */
+#define	FIFODATA1	0x05 /* R/W */
+#define	FIFODATA2	0x06 /* R/W */
+#define	FIFODATA3	0x07 /* R/W */
+
+/*====================================================================
+ * indexed register
+ ====================================================================*/
+#define EXTBUSCTRL	0x10 /* R/W,deleted */
+
+#define CLOCKDIV	0x11 /* R/W */
+#  define CLOCK_40M 0x02
+#  define CLOCK_20M 0x01
+#  define FAST_20   BIT(2)
+
+#define TERMPWRCTRL	0x13 /* R/W */
+#  define POWER_ON BIT(0)
+
+#define SCSIIRQMODE	0x15 /* R/W */
+#  define SCSI_PHASE_CHANGE_EI BIT(0)
+#  define RESELECT_EI          BIT(4)
+#  define FIFO_IRQ_EI          BIT(5)
+#  define SCSI_RESET_IRQ_EI    BIT(6)
+
+#define IRQPHASESENCE	0x16 /* R */
+#  define LATCHED_MSG      BIT(0)
+#  define LATCHED_IO       BIT(1)
+#  define LATCHED_CD       BIT(2)
+#  define LATCHED_BUS_FREE BIT(3)
+#  define PHASE_CHANGE_IRQ BIT(4)
+#  define RESELECT_IRQ     BIT(5)
+#  define FIFO_IRQ         BIT(6)
+#  define SCSI_RESET_IRQ   BIT(7)
+
+#define TIMERCOUNT	0x17 /* R/W */
+
+#define SCSIBUSCTRL	0x18 /* R/W */
+#  define SCSI_SEL         BIT(0)
+#  define SCSI_RST         BIT(1)
+#  define SCSI_DATAOUT_ENB BIT(2)
+#  define SCSI_ATN         BIT(3)
+#  define SCSI_ACK         BIT(4)
+#  define SCSI_BSY         BIT(5)
+#  define AUTODIRECTION    BIT(6)
+#  define ACKENB           BIT(7)
+
+#define SCSIBUSMON	0x19 /* R */
+
+#define SETARBIT	0x1A /* W */
+#  define ARBIT_GO         BIT(0)
+#  define ARBIT_FLAG_CLEAR BIT(1)
+
+#define ARBITSTATUS	0x1A /* R */
+/*#  define ARBIT_GO        BIT(0)*/
+#  define ARBIT_WIN        BIT(1)
+#  define ARBIT_FAIL       BIT(2)
+#  define RESELECT_FLAG    BIT(3)
+
+#define PARITYCTRL	0x1B  /* W */
+#define PARITYSTATUS	0x1B  /* R */
+
+#define COMMANDCTRL	0x1C  /* W */
+#  define CLEAR_COMMAND_POINTER BIT(0)
+#  define AUTO_COMMAND_GO       BIT(1)
+
+#define RESELECTID	0x1C  /* R   */
+#define COMMANDDATA	0x1D  /* R/W */
+
+#define POINTERCLR	0x1E  /*   W */
+#  define POINTER_CLEAR      BIT(0)
+#  define ACK_COUNTER_CLEAR  BIT(1)
+#  define REQ_COUNTER_CLEAR  BIT(2)
+#  define HOST_COUNTER_CLEAR BIT(3)
+#  define READ_SOURCE        (BIT(4) | BIT(5))
+#    define ACK_COUNTER        (0)
+#    define REQ_COUNTER        (BIT(4))
+#    define HOST_COUNTER       (BIT(5))
+
+#define TRANSFERCOUNT	0x1E  /* R   */
+
+#define TRANSFERMODE	0x20  /* R/W */
+#  define MODE_MEM8   BIT(0)
+#  define MODE_MEM32  BIT(1)
+#  define MODE_ADR24  BIT(2)
+#  define MODE_ADR32  BIT(3)
+#  define MODE_IO8    BIT(4)
+#  define MODE_IO32   BIT(5)
+#  define TRANSFER_GO BIT(6)
+#  define BRAIND      BIT(7)
+
+#define SYNCREG		0x21 /* R/W */
+#  define SYNCREG_OFFSET_MASK  0x0f
+#  define SYNCREG_PERIOD_MASK  0xf0
+#  define SYNCREG_PERIOD_SHIFT 4
+
+#define SCSIDATALATCH	0x22 /*   W */
+#define SCSIDATAIN	0x22 /* R   */
+#define SCSIDATAWITHACK	0x23 /* R/W */
+#define SCAMCONTROL	0x24 /*   W */
+#define SCAMSTATUS	0x24 /* R   */
+#define SCAMDATA	0x25 /* R/W */
+
+#define OTHERCONTROL	0x26 /* R/W */
+#  define TPL_ROM_WRITE_EN BIT(0)
+#  define TPWR_OUT         BIT(1)
+#  define TPWR_SENSE       BIT(2)
+#  define RA8_CONTROL      BIT(3)
+
+#define ACKWIDTH	0x27 /* R/W */
+#define CLRTESTPNT	0x28 /*   W */
+#define ACKCNTLD	0x29 /*   W */
+#define REQCNTLD	0x2A /*   W */
+#define HSTCNTLD	0x2B /*   W */
+#define CHECKSUM	0x2C /* R/W */
+
+/************************************************************************
+ * Input status bit definitions.
+ ************************************************************************/
+#define S_MESSAGE	BIT(0)    /* Message line from SCSI bus      */
+#define S_IO		BIT(1)    /* Input/Output line from SCSI bus */
+#define S_CD		BIT(2)    /* Command/Data line from SCSI bus */
+#define S_BUSY		BIT(3)    /* Busy line from SCSI bus         */
+#define S_ACK		BIT(4)    /* Acknowledge line from SCSI bus  */
+#define S_REQUEST	BIT(5)    /* Request line from SCSI bus      */
+#define S_SELECT	BIT(6)	  /*                                 */
+#define S_ATN		BIT(7)	  /*                                 */
+
+/***********************************************************************
+ * Useful Bus Monitor status combinations.
+ ***********************************************************************/
+#define BUSMON_SEL         S_SELECT
+#define BUSMON_BSY         S_BUSY
+#define BUSMON_REQ         S_REQUEST
+#define BUSMON_IO          S_IO
+#define BUSMON_ACK         S_ACK
+#define BUSMON_BUS_FREE    0
+#define BUSMON_COMMAND     ( S_BUSY | S_CD |                    S_REQUEST )
+#define BUSMON_MESSAGE_IN  ( S_BUSY | S_CD | S_IO | S_MESSAGE | S_REQUEST )
+#define BUSMON_MESSAGE_OUT ( S_BUSY | S_CD |        S_MESSAGE | S_REQUEST )
+#define BUSMON_DATA_IN     ( S_BUSY |        S_IO |             S_REQUEST )
+#define BUSMON_DATA_OUT    ( S_BUSY |                           S_REQUEST )
+#define BUSMON_STATUS      ( S_BUSY | S_CD | S_IO |             S_REQUEST )
+#define BUSMON_SELECT      (                 S_IO |                        S_SELECT )
+#define BUSMON_RESELECT    (                 S_IO |                        S_SELECT )
+#define BUSMON_PHASE_MASK  (          S_CD | S_IO | S_MESSAGE |            S_SELECT )
+
+#define BUSPHASE_SELECT      ( BUSMON_SELECT      & BUSMON_PHASE_MASK )
+#define BUSPHASE_COMMAND     ( BUSMON_COMMAND     & BUSMON_PHASE_MASK )
+#define BUSPHASE_MESSAGE_IN  ( BUSMON_MESSAGE_IN  & BUSMON_PHASE_MASK )
+#define BUSPHASE_MESSAGE_OUT ( BUSMON_MESSAGE_OUT & BUSMON_PHASE_MASK )
+#define BUSPHASE_DATA_IN     ( BUSMON_DATA_IN     & BUSMON_PHASE_MASK )
+#define BUSPHASE_DATA_OUT    ( BUSMON_DATA_OUT    & BUSMON_PHASE_MASK )
+#define BUSPHASE_STATUS      ( BUSMON_STATUS      & BUSMON_PHASE_MASK )
+
+/*====================================================================*/
+
+typedef struct scsi_info_t {
+	struct pcmcia_device	*p_dev;
+	struct Scsi_Host      *host;
+	int                    stop;
+} scsi_info_t;
+
+
+/* synchronous transfer negotiation data */
+typedef struct _sync_data {
+	unsigned int SyncNegotiation;
+#define SYNC_NOT_YET 0
+#define SYNC_OK      1
+#define SYNC_NG      2
+
+	unsigned int  SyncPeriod;
+	unsigned int  SyncOffset;
+	unsigned char SyncRegister;
+	unsigned char AckWidth;
+} sync_data;
+
+typedef struct _nsp_hw_data {
+	unsigned int  BaseAddress;
+	unsigned int  NumAddress;
+	unsigned int  IrqNumber;
+
+	unsigned long MmioAddress;
+#define NSP_MMIO_OFFSET 0x0800
+	unsigned long MmioLength;
+
+	unsigned char ScsiClockDiv;
+
+	unsigned char TransferMode;
+
+	int           TimerCount;
+	int           SelectionTimeOut;
+	struct scsi_cmnd *CurrentSC;
+	//int           CurrnetTarget;
+
+	int           FifoCount;
+
+#define MSGBUF_SIZE 20
+	unsigned char MsgBuffer[MSGBUF_SIZE];
+	int MsgLen;
+
+#define N_TARGET 8
+	sync_data     Sync[N_TARGET];
+
+	char nspinfo[110];     /* description */
+	spinlock_t Lock;
+
+	scsi_info_t   *ScsiInfo; /* attach <-> detect glue */
+
+
+#ifdef NSP_DEBUG
+	int CmdId; /* Accepted command serial number.
+		      Used for debugging.             */
+#endif
+} nsp_hw_data;
+
+/****************************************************************************
+ *
+ */
+
+/* Card service functions */
+static void        nsp_cs_detach (struct pcmcia_device *p_dev);
+static void        nsp_cs_release(struct pcmcia_device *link);
+static int        nsp_cs_config (struct pcmcia_device *link);
+
+/* Linux SCSI subsystem specific functions */
+static struct Scsi_Host *nsp_detect     (struct scsi_host_template *sht);
+static const  char      *nsp_info       (struct Scsi_Host *shpnt);
+static        int        nsp_show_info  (struct seq_file *m,
+	                                 struct Scsi_Host *host);
+static int nsp_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *SCpnt);
+
+/* Error handler */
+/*static int nsp_eh_abort       (struct scsi_cmnd *SCpnt);*/
+/*static int nsp_eh_device_reset(struct scsi_cmnd *SCpnt);*/
+static int nsp_eh_bus_reset    (struct scsi_cmnd *SCpnt);
+static int nsp_eh_host_reset   (struct scsi_cmnd *SCpnt);
+static int nsp_bus_reset       (nsp_hw_data *data);
+
+/* */
+static int  nsphw_init           (nsp_hw_data *data);
+static int  nsphw_start_selection(struct scsi_cmnd *SCpnt);
+static void nsp_start_timer      (struct scsi_cmnd *SCpnt, int time);
+static int  nsp_fifo_count       (struct scsi_cmnd *SCpnt);
+static void nsp_pio_read         (struct scsi_cmnd *SCpnt);
+static void nsp_pio_write        (struct scsi_cmnd *SCpnt);
+static int  nsp_nexus            (struct scsi_cmnd *SCpnt);
+static void nsp_scsi_done        (struct scsi_cmnd *SCpnt);
+static int  nsp_analyze_sdtr     (struct scsi_cmnd *SCpnt);
+static int  nsp_negate_signal    (struct scsi_cmnd *SCpnt,
+				  unsigned char mask, char *str);
+static int  nsp_expect_signal    (struct scsi_cmnd *SCpnt,
+				  unsigned char current_phase,
+				  unsigned char  mask);
+static int  nsp_xfer             (struct scsi_cmnd *SCpnt, int phase);
+static int  nsp_dataphase_bypass (struct scsi_cmnd *SCpnt);
+static int  nsp_reselected       (struct scsi_cmnd *SCpnt);
+static struct Scsi_Host *nsp_detect(struct scsi_host_template *sht);
+
+/* Interrupt handler */
+//static irqreturn_t nspintr(int irq, void *dev_id);
+
+/* Module entry point*/
+static int  __init nsp_cs_init(void);
+static void __exit nsp_cs_exit(void);
+
+/* Debug */
+#ifdef NSP_DEBUG
+static void show_command (struct scsi_cmnd *SCpnt);
+static void show_phase   (struct scsi_cmnd *SCpnt);
+static void show_busphase(unsigned char stat);
+static void show_message (nsp_hw_data *data);
+#else
+# define show_command(ptr)   /* */
+# define show_phase(SCpnt)   /* */
+# define show_busphase(stat) /* */
+# define show_message(data)  /* */
+#endif
+
+/*
+ * SCSI phase
+ */
+enum _scsi_phase {
+	PH_UNDETERMINED ,
+	PH_ARBSTART     ,
+	PH_SELSTART     ,
+	PH_SELECTED     ,
+	PH_COMMAND      ,
+	PH_DATA         ,
+	PH_STATUS       ,
+	PH_MSG_IN       ,
+	PH_MSG_OUT      ,
+	PH_DISCONNECT   ,
+	PH_RESELECT     ,
+	PH_ABORT        ,
+	PH_RESET
+};
+
+enum _data_in_out {
+	IO_UNKNOWN,
+	IO_IN,
+	IO_OUT
+};
+
+enum _burst_mode {
+	BURST_IO8   = 0,
+	BURST_IO32  = 1,
+	BURST_MEM32 = 2,
+};
+
+/**************************************************************************
+ * SCSI messaage
+ */
+#define MSG_COMMAND_COMPLETE 0x00
+#define MSG_EXTENDED         0x01
+#define MSG_ABORT            0x06
+#define MSG_NO_OPERATION     0x08
+#define MSG_BUS_DEVICE_RESET 0x0c
+
+#define MSG_EXT_SDTR         0x01
+
+/* scatter-gather table */
+#  define BUFFER_ADDR ((char *)((sg_virt(SCpnt->SCp.buffer))))
+
+#endif  /*__nsp_cs__*/
+/* end */