378 lines · c
1/*=======================================================/2 Header file for nsp_cs.c3 By: YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>4 5 Ver.1.0 : Cut unused lines.6 Ver 0.1 : Initial version.7 8 This software may be used and distributed according to the terms of9 the GNU General Public License.10 11=========================================================*/12 13#ifndef __nsp_cs__14#define __nsp_cs__15 16/* for debugging */17//#define NSP_DEBUG 918 19/*20#define static21#define inline22*/23 24/************************************25 * Some useful macros...26 */27 28/* SCSI initiator must be ID 7 */29#define NSP_INITIATOR_ID 730 31#define NSP_SELTIMEOUT 20032 33/***************************************************************************34 * register definitions35 ***************************************************************************/36/*========================================================================37 * base register38 ========================================================================*/39#define IRQCONTROL 0x00 /* R */40# define IRQCONTROL_RESELECT_CLEAR BIT(0)41# define IRQCONTROL_PHASE_CHANGE_CLEAR BIT(1)42# define IRQCONTROL_TIMER_CLEAR BIT(2)43# define IRQCONTROL_FIFO_CLEAR BIT(3)44# define IRQCONTROL_ALLMASK 0xff45# define IRQCONTROL_ALLCLEAR (IRQCONTROL_RESELECT_CLEAR | \46 IRQCONTROL_PHASE_CHANGE_CLEAR | \47 IRQCONTROL_TIMER_CLEAR | \48 IRQCONTROL_FIFO_CLEAR )49# define IRQCONTROL_IRQDISABLE 0xf050 51#define IRQSTATUS 0x00 /* W */52# define IRQSTATUS_SCSI BIT(0)53# define IRQSTATUS_TIMER BIT(2)54# define IRQSTATUS_FIFO BIT(3)55# define IRQSTATUS_MASK 0x0f56 57#define IFSELECT 0x01 /* W */58# define IF_IFSEL BIT(0)59# define IF_REGSEL BIT(2)60 61#define FIFOSTATUS 0x01 /* R */62# define FIFOSTATUS_CHIP_REVISION_MASK 0x0f63# define FIFOSTATUS_CHIP_ID_MASK 0x7064# define FIFOSTATUS_FULL_EMPTY BIT(7)65 66#define INDEXREG 0x02 /* R/W */67#define DATAREG 0x03 /* R/W */68#define FIFODATA 0x04 /* R/W */69#define FIFODATA1 0x05 /* R/W */70#define FIFODATA2 0x06 /* R/W */71#define FIFODATA3 0x07 /* R/W */72 73/*====================================================================74 * indexed register75 ====================================================================*/76#define EXTBUSCTRL 0x10 /* R/W,deleted */77 78#define CLOCKDIV 0x11 /* R/W */79# define CLOCK_40M 0x0280# define CLOCK_20M 0x0181# define FAST_20 BIT(2)82 83#define TERMPWRCTRL 0x13 /* R/W */84# define POWER_ON BIT(0)85 86#define SCSIIRQMODE 0x15 /* R/W */87# define SCSI_PHASE_CHANGE_EI BIT(0)88# define RESELECT_EI BIT(4)89# define FIFO_IRQ_EI BIT(5)90# define SCSI_RESET_IRQ_EI BIT(6)91 92#define IRQPHASESENCE 0x16 /* R */93# define LATCHED_MSG BIT(0)94# define LATCHED_IO BIT(1)95# define LATCHED_CD BIT(2)96# define LATCHED_BUS_FREE BIT(3)97# define PHASE_CHANGE_IRQ BIT(4)98# define RESELECT_IRQ BIT(5)99# define FIFO_IRQ BIT(6)100# define SCSI_RESET_IRQ BIT(7)101 102#define TIMERCOUNT 0x17 /* R/W */103 104#define SCSIBUSCTRL 0x18 /* R/W */105# define SCSI_SEL BIT(0)106# define SCSI_RST BIT(1)107# define SCSI_DATAOUT_ENB BIT(2)108# define SCSI_ATN BIT(3)109# define SCSI_ACK BIT(4)110# define SCSI_BSY BIT(5)111# define AUTODIRECTION BIT(6)112# define ACKENB BIT(7)113 114#define SCSIBUSMON 0x19 /* R */115 116#define SETARBIT 0x1A /* W */117# define ARBIT_GO BIT(0)118# define ARBIT_FLAG_CLEAR BIT(1)119 120#define ARBITSTATUS 0x1A /* R */121/*# define ARBIT_GO BIT(0)*/122# define ARBIT_WIN BIT(1)123# define ARBIT_FAIL BIT(2)124# define RESELECT_FLAG BIT(3)125 126#define PARITYCTRL 0x1B /* W */127#define PARITYSTATUS 0x1B /* R */128 129#define COMMANDCTRL 0x1C /* W */130# define CLEAR_COMMAND_POINTER BIT(0)131# define AUTO_COMMAND_GO BIT(1)132 133#define RESELECTID 0x1C /* R */134#define COMMANDDATA 0x1D /* R/W */135 136#define POINTERCLR 0x1E /* W */137# define POINTER_CLEAR BIT(0)138# define ACK_COUNTER_CLEAR BIT(1)139# define REQ_COUNTER_CLEAR BIT(2)140# define HOST_COUNTER_CLEAR BIT(3)141# define READ_SOURCE (BIT(4) | BIT(5))142# define ACK_COUNTER (0)143# define REQ_COUNTER (BIT(4))144# define HOST_COUNTER (BIT(5))145 146#define TRANSFERCOUNT 0x1E /* R */147 148#define TRANSFERMODE 0x20 /* R/W */149# define MODE_MEM8 BIT(0)150# define MODE_MEM32 BIT(1)151# define MODE_ADR24 BIT(2)152# define MODE_ADR32 BIT(3)153# define MODE_IO8 BIT(4)154# define MODE_IO32 BIT(5)155# define TRANSFER_GO BIT(6)156# define BRAIND BIT(7)157 158#define SYNCREG 0x21 /* R/W */159# define SYNCREG_OFFSET_MASK 0x0f160# define SYNCREG_PERIOD_MASK 0xf0161# define SYNCREG_PERIOD_SHIFT 4162 163#define SCSIDATALATCH 0x22 /* W */164#define SCSIDATAIN 0x22 /* R */165#define SCSIDATAWITHACK 0x23 /* R/W */166#define SCAMCONTROL 0x24 /* W */167#define SCAMSTATUS 0x24 /* R */168#define SCAMDATA 0x25 /* R/W */169 170#define OTHERCONTROL 0x26 /* R/W */171# define TPL_ROM_WRITE_EN BIT(0)172# define TPWR_OUT BIT(1)173# define TPWR_SENSE BIT(2)174# define RA8_CONTROL BIT(3)175 176#define ACKWIDTH 0x27 /* R/W */177#define CLRTESTPNT 0x28 /* W */178#define ACKCNTLD 0x29 /* W */179#define REQCNTLD 0x2A /* W */180#define HSTCNTLD 0x2B /* W */181#define CHECKSUM 0x2C /* R/W */182 183/************************************************************************184 * Input status bit definitions.185 ************************************************************************/186#define S_MESSAGE BIT(0) /* Message line from SCSI bus */187#define S_IO BIT(1) /* Input/Output line from SCSI bus */188#define S_CD BIT(2) /* Command/Data line from SCSI bus */189#define S_BUSY BIT(3) /* Busy line from SCSI bus */190#define S_ACK BIT(4) /* Acknowledge line from SCSI bus */191#define S_REQUEST BIT(5) /* Request line from SCSI bus */192#define S_SELECT BIT(6) /* */193#define S_ATN BIT(7) /* */194 195/***********************************************************************196 * Useful Bus Monitor status combinations.197 ***********************************************************************/198#define BUSMON_SEL S_SELECT199#define BUSMON_BSY S_BUSY200#define BUSMON_REQ S_REQUEST201#define BUSMON_IO S_IO202#define BUSMON_ACK S_ACK203#define BUSMON_BUS_FREE 0204#define BUSMON_COMMAND ( S_BUSY | S_CD | S_REQUEST )205#define BUSMON_MESSAGE_IN ( S_BUSY | S_CD | S_IO | S_MESSAGE | S_REQUEST )206#define BUSMON_MESSAGE_OUT ( S_BUSY | S_CD | S_MESSAGE | S_REQUEST )207#define BUSMON_DATA_IN ( S_BUSY | S_IO | S_REQUEST )208#define BUSMON_DATA_OUT ( S_BUSY | S_REQUEST )209#define BUSMON_STATUS ( S_BUSY | S_CD | S_IO | S_REQUEST )210#define BUSMON_SELECT ( S_IO | S_SELECT )211#define BUSMON_RESELECT ( S_IO | S_SELECT )212#define BUSMON_PHASE_MASK ( S_CD | S_IO | S_MESSAGE | S_SELECT )213 214#define BUSPHASE_SELECT ( BUSMON_SELECT & BUSMON_PHASE_MASK )215#define BUSPHASE_COMMAND ( BUSMON_COMMAND & BUSMON_PHASE_MASK )216#define BUSPHASE_MESSAGE_IN ( BUSMON_MESSAGE_IN & BUSMON_PHASE_MASK )217#define BUSPHASE_MESSAGE_OUT ( BUSMON_MESSAGE_OUT & BUSMON_PHASE_MASK )218#define BUSPHASE_DATA_IN ( BUSMON_DATA_IN & BUSMON_PHASE_MASK )219#define BUSPHASE_DATA_OUT ( BUSMON_DATA_OUT & BUSMON_PHASE_MASK )220#define BUSPHASE_STATUS ( BUSMON_STATUS & BUSMON_PHASE_MASK )221 222/*====================================================================*/223 224typedef struct scsi_info_t {225 struct pcmcia_device *p_dev;226 struct Scsi_Host *host;227 int stop;228} scsi_info_t;229 230 231/* synchronous transfer negotiation data */232typedef struct _sync_data {233 unsigned int SyncNegotiation;234#define SYNC_NOT_YET 0235#define SYNC_OK 1236#define SYNC_NG 2237 238 unsigned int SyncPeriod;239 unsigned int SyncOffset;240 unsigned char SyncRegister;241 unsigned char AckWidth;242} sync_data;243 244typedef struct _nsp_hw_data {245 unsigned int BaseAddress;246 unsigned int NumAddress;247 unsigned int IrqNumber;248 249 unsigned long MmioAddress;250#define NSP_MMIO_OFFSET 0x0800251 unsigned long MmioLength;252 253 unsigned char ScsiClockDiv;254 255 unsigned char TransferMode;256 257 int TimerCount;258 int SelectionTimeOut;259 struct scsi_cmnd *CurrentSC;260 //int CurrnetTarget;261 262 int FifoCount;263 264#define MSGBUF_SIZE 20265 unsigned char MsgBuffer[MSGBUF_SIZE];266 int MsgLen;267 268#define N_TARGET 8269 sync_data Sync[N_TARGET];270 271 char nspinfo[110]; /* description */272 spinlock_t Lock;273 274 scsi_info_t *ScsiInfo; /* attach <-> detect glue */275 276 277#ifdef NSP_DEBUG278 int CmdId; /* Accepted command serial number.279 Used for debugging. */280#endif281} nsp_hw_data;282 283/****************************************************************************284 *285 */286 287/* Card service functions */288static void nsp_cs_detach (struct pcmcia_device *p_dev);289static void nsp_cs_release(struct pcmcia_device *link);290static int nsp_cs_config (struct pcmcia_device *link);291 292/* Linux SCSI subsystem specific functions */293static struct Scsi_Host *nsp_detect (struct scsi_host_template *sht);294static const char *nsp_info (struct Scsi_Host *shpnt);295static int nsp_show_info (struct seq_file *m,296 struct Scsi_Host *host);297static int nsp_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *SCpnt);298 299/* Error handler */300/*static int nsp_eh_abort (struct scsi_cmnd *SCpnt);*/301/*static int nsp_eh_device_reset(struct scsi_cmnd *SCpnt);*/302static int nsp_eh_bus_reset (struct scsi_cmnd *SCpnt);303static int nsp_eh_host_reset (struct scsi_cmnd *SCpnt);304static int nsp_bus_reset (nsp_hw_data *data);305 306/* */307static void nsphw_init (nsp_hw_data *data);308static bool nsphw_start_selection(struct scsi_cmnd *SCpnt);309static void nsp_start_timer (struct scsi_cmnd *SCpnt, int time);310static int nsp_fifo_count (struct scsi_cmnd *SCpnt);311static void nsp_pio_read (struct scsi_cmnd *SCpnt);312static void nsp_pio_write (struct scsi_cmnd *SCpnt);313static int nsp_nexus (struct scsi_cmnd *SCpnt);314static void nsp_scsi_done (struct scsi_cmnd *SCpnt);315static int nsp_analyze_sdtr (struct scsi_cmnd *SCpnt);316static int nsp_negate_signal (struct scsi_cmnd *SCpnt,317 unsigned char mask, char *str);318static int nsp_expect_signal (struct scsi_cmnd *SCpnt,319 unsigned char current_phase,320 unsigned char mask);321static int nsp_xfer (struct scsi_cmnd *SCpnt, int phase);322static int nsp_dataphase_bypass (struct scsi_cmnd *SCpnt);323static void nsp_reselected (struct scsi_cmnd *SCpnt);324static struct Scsi_Host *nsp_detect(struct scsi_host_template *sht);325 326/* Interrupt handler */327//static irqreturn_t nspintr(int irq, void *dev_id);328 329/* Debug */330#ifdef NSP_DEBUG331static void show_command (struct scsi_cmnd *SCpnt);332static void show_phase (struct scsi_cmnd *SCpnt);333static void show_busphase(unsigned char stat);334static void show_message (nsp_hw_data *data);335#else336# define show_command(ptr) /* */337# define show_phase(SCpnt) /* */338# define show_busphase(stat) /* */339# define show_message(data) /* */340#endif341 342/*343 * SCSI phase344 */345enum _scsi_phase {346 PH_UNDETERMINED ,347 PH_ARBSTART ,348 PH_SELSTART ,349 PH_SELECTED ,350 PH_COMMAND ,351 PH_DATA ,352 PH_STATUS ,353 PH_MSG_IN ,354 PH_MSG_OUT ,355 PH_DISCONNECT ,356 PH_RESELECT ,357 PH_ABORT ,358 PH_RESET359};360 361enum _data_in_out {362 IO_UNKNOWN,363 IO_IN,364 IO_OUT365};366 367enum _burst_mode {368 BURST_IO8 = 0,369 BURST_IO32 = 1,370 BURST_MEM32 = 2,371};372 373/* scatter-gather table */374#define BUFFER_ADDR(SCpnt) ((char *)(sg_virt(nsp_priv(SCpnt)->buffer)))375 376#endif /*__nsp_cs__*/377/* end */378