/*=======================================================/
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) /* Acknowlege 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;
dev_node_t node;
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_proc_info (
struct Scsi_Host *host,
char *buffer,
char **start,
off_t offset,
int length,
int inout);
static int nsp_queuecommand(struct scsi_cmnd *SCpnt,
void (* done)(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 */
