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Diffstat (limited to 'drivers/scsi/53c7xx.h')
| -rw-r--r-- | drivers/scsi/53c7xx.h | 1608 |
1 files changed, 0 insertions, 1608 deletions
diff --git a/drivers/scsi/53c7xx.h b/drivers/scsi/53c7xx.h deleted file mode 100644 index 218f3b901537..000000000000 --- a/drivers/scsi/53c7xx.h +++ /dev/null @@ -1,1608 +0,0 @@ -/* - * 53c710 driver. Modified from Drew Eckhardts driver - * for 53c810 by Richard Hirst [richard@sleepie.demon.co.uk] - * - * I have left the code for the 53c8xx family in here, because it didn't - * seem worth removing it. The possibility of IO_MAPPED chips rather - * than MEMORY_MAPPED remains, in case someone wants to add support for - * 53c710 chips on Intel PCs (some older machines have them on the - * motherboard). - * - * NOTE THERE MAY BE PROBLEMS WITH CASTS IN read8 AND Co. - */ - -/* - * NCR 53c{7,8}0x0 driver, header file - * - * Sponsored by - * iX Multiuser Multitasking Magazine - * Hannover, Germany - * hm@ix.de - * - * Copyright 1993, 1994, 1995 Drew Eckhardt - * Visionary Computing - * (Unix and Linux consulting and custom programming) - * drew@PoohSticks.ORG - * +1 (303) 786-7975 - * - * TolerANT and SCSI SCRIPTS are registered trademarks of NCR Corporation. - * - * PRE-ALPHA - * - * For more information, please consult - * - * NCR 53C700/53C700-66 - * SCSI I/O Processor - * Data Manual - * - * NCR 53C810 - * PCI-SCSI I/O Processor - * Data Manual - * - * NCR Microelectronics - * 1635 Aeroplaza Drive - * Colorado Springs, CO 80916 - * +1 (719) 578-3400 - * - * Toll free literature number - * +1 (800) 334-5454 - * - */ - -#ifndef NCR53c710_H -#define NCR53c710_H - -#ifndef HOSTS_C - -/* SCSI control 0 rw, default = 0xc0 */ -#define SCNTL0_REG 0x00 -#define SCNTL0_ARB1 0x80 /* 0 0 = simple arbitration */ -#define SCNTL0_ARB2 0x40 /* 1 1 = full arbitration */ -#define SCNTL0_STRT 0x20 /* Start Sequence */ -#define SCNTL0_WATN 0x10 /* Select with ATN */ -#define SCNTL0_EPC 0x08 /* Enable parity checking */ -/* Bit 2 is reserved on 800 series chips */ -#define SCNTL0_EPG_700 0x04 /* Enable parity generation */ -#define SCNTL0_AAP 0x02 /* ATN/ on parity error */ -#define SCNTL0_TRG 0x01 /* Target mode */ - -/* SCSI control 1 rw, default = 0x00 */ - -#define SCNTL1_REG 0x01 -#define SCNTL1_EXC 0x80 /* Extra Clock Cycle of Data setup */ -#define SCNTL1_ADB 0x40 /* contents of SODL on bus */ -#define SCNTL1_ESR_700 0x20 /* Enable SIOP response to selection - and reselection */ -#define SCNTL1_DHP_800 0x20 /* Disable halt on parity error or ATN - target mode only */ -#define SCNTL1_CON 0x10 /* Connected */ -#define SCNTL1_RST 0x08 /* SCSI RST/ */ -#define SCNTL1_AESP 0x04 /* Force bad parity */ -#define SCNTL1_SND_700 0x02 /* Start SCSI send */ -#define SCNTL1_IARB_800 0x02 /* Immediate Arbitration, start - arbitration immediately after - busfree is detected */ -#define SCNTL1_RCV_700 0x01 /* Start SCSI receive */ -#define SCNTL1_SST_800 0x01 /* Start SCSI transfer */ - -/* SCSI control 2 rw, */ - -#define SCNTL2_REG_800 0x02 -#define SCNTL2_800_SDU 0x80 /* SCSI disconnect unexpected */ - -/* SCSI control 3 rw */ - -#define SCNTL3_REG_800 0x03 -#define SCNTL3_800_SCF_SHIFT 4 -#define SCNTL3_800_SCF_MASK 0x70 -#define SCNTL3_800_SCF2 0x40 /* Synchronous divisor */ -#define SCNTL3_800_SCF1 0x20 /* 0x00 = SCLK/3 */ -#define SCNTL3_800_SCF0 0x10 /* 0x10 = SCLK/1 */ - /* 0x20 = SCLK/1.5 - 0x30 = SCLK/2 - 0x40 = SCLK/3 */ - -#define SCNTL3_800_CCF_SHIFT 0 -#define SCNTL3_800_CCF_MASK 0x07 -#define SCNTL3_800_CCF2 0x04 /* 0x00 50.01 to 66 */ -#define SCNTL3_800_CCF1 0x02 /* 0x01 16.67 to 25 */ -#define SCNTL3_800_CCF0 0x01 /* 0x02 25.01 - 37.5 - 0x03 37.51 - 50 - 0x04 50.01 - 66 */ - -/* - * SCSI destination ID rw - the appropriate bit is set for the selected - * target ID. This is written by the SCSI SCRIPTS processor. - * default = 0x00 - */ -#define SDID_REG_700 0x02 -#define SDID_REG_800 0x06 - -#define GP_REG_800 0x07 /* General purpose IO */ -#define GP_800_IO1 0x02 -#define GP_800_IO2 0x01 - -/* SCSI interrupt enable rw, default = 0x00 */ -#define SIEN_REG_700 0x03 -#define SIEN0_REG_800 0x40 -#define SIEN_MA 0x80 /* Phase mismatch (ini) or ATN (tgt) */ -#define SIEN_FC 0x40 /* Function complete */ -#define SIEN_700_STO 0x20 /* Selection or reselection timeout */ -#define SIEN_800_SEL 0x20 /* Selected */ -#define SIEN_700_SEL 0x10 /* Selected or reselected */ -#define SIEN_800_RESEL 0x10 /* Reselected */ -#define SIEN_SGE 0x08 /* SCSI gross error */ -#define SIEN_UDC 0x04 /* Unexpected disconnect */ -#define SIEN_RST 0x02 /* SCSI RST/ received */ -#define SIEN_PAR 0x01 /* Parity error */ - -/* - * SCSI chip ID rw - * NCR53c700 : - * When arbitrating, the highest bit is used, when reselection or selection - * occurs, the chip responds to all IDs for which a bit is set. - * default = 0x00 - * NCR53c810 : - * Uses bit mapping - */ -#define SCID_REG 0x04 -/* Bit 7 is reserved on 800 series chips */ -#define SCID_800_RRE 0x40 /* Enable response to reselection */ -#define SCID_800_SRE 0x20 /* Enable response to selection */ -/* Bits four and three are reserved on 800 series chips */ -#define SCID_800_ENC_MASK 0x07 /* Encoded SCSI ID */ - -/* SCSI transfer rw, default = 0x00 */ -#define SXFER_REG 0x05 -#define SXFER_DHP 0x80 /* Disable halt on parity */ - -#define SXFER_TP2 0x40 /* Transfer period msb */ -#define SXFER_TP1 0x20 -#define SXFER_TP0 0x10 /* lsb */ -#define SXFER_TP_MASK 0x70 -/* FIXME : SXFER_TP_SHIFT == 5 is right for '8xx chips */ -#define SXFER_TP_SHIFT 5 -#define SXFER_TP_4 0x00 /* Divisors */ -#define SXFER_TP_5 0x10<<1 -#define SXFER_TP_6 0x20<<1 -#define SXFER_TP_7 0x30<<1 -#define SXFER_TP_8 0x40<<1 -#define SXFER_TP_9 0x50<<1 -#define SXFER_TP_10 0x60<<1 -#define SXFER_TP_11 0x70<<1 - -#define SXFER_MO3 0x08 /* Max offset msb */ -#define SXFER_MO2 0x04 -#define SXFER_MO1 0x02 -#define SXFER_MO0 0x01 /* lsb */ -#define SXFER_MO_MASK 0x0f -#define SXFER_MO_SHIFT 0 - -/* - * SCSI output data latch rw - * The contents of this register are driven onto the SCSI bus when - * the Assert Data Bus bit of the SCNTL1 register is set and - * the CD, IO, and MSG bits of the SOCL register match the SCSI phase - */ -#define SODL_REG_700 0x06 -#define SODL_REG_800 0x54 - - -/* - * SCSI output control latch rw, default = 0 - * Note that when the chip is being manually programmed as an initiator, - * the MSG, CD, and IO bits must be set correctly for the phase the target - * is driving the bus in. Otherwise no data transfer will occur due to - * phase mismatch. - */ - -#define SOCL_REG 0x07 -#define SOCL_REQ 0x80 /* REQ */ -#define SOCL_ACK 0x40 /* ACK */ -#define SOCL_BSY 0x20 /* BSY */ -#define SOCL_SEL 0x10 /* SEL */ -#define SOCL_ATN 0x08 /* ATN */ -#define SOCL_MSG 0x04 /* MSG */ -#define SOCL_CD 0x02 /* C/D */ -#define SOCL_IO 0x01 /* I/O */ - -/* - * SCSI first byte received latch ro - * This register contains the first byte received during a block MOVE - * SCSI SCRIPTS instruction, including - * - * Initiator mode Target mode - * Message in Command - * Status Message out - * Data in Data out - * - * It also contains the selecting or reselecting device's ID and our - * ID. - * - * Note that this is the register the various IF conditionals can - * operate on. - */ -#define SFBR_REG 0x08 - -/* - * SCSI input data latch ro - * In initiator mode, data is latched into this register on the rising - * edge of REQ/. In target mode, data is latched on the rising edge of - * ACK/ - */ -#define SIDL_REG_700 0x09 -#define SIDL_REG_800 0x50 - -/* - * SCSI bus data lines ro - * This register reflects the instantaneous status of the SCSI data - * lines. Note that SCNTL0 must be set to disable parity checking, - * otherwise reading this register will latch new parity. - */ -#define SBDL_REG_700 0x0a -#define SBDL_REG_800 0x58 - -#define SSID_REG_800 0x0a -#define SSID_800_VAL 0x80 /* Exactly two bits asserted at sel */ -#define SSID_800_ENCID_MASK 0x07 /* Device which performed operation */ - - -/* - * SCSI bus control lines rw, - * instantaneous readout of control lines - */ -#define SBCL_REG 0x0b -#define SBCL_REQ 0x80 /* REQ ro */ -#define SBCL_ACK 0x40 /* ACK ro */ -#define SBCL_BSY 0x20 /* BSY ro */ -#define SBCL_SEL 0x10 /* SEL ro */ -#define SBCL_ATN 0x08 /* ATN ro */ -#define SBCL_MSG 0x04 /* MSG ro */ -#define SBCL_CD 0x02 /* C/D ro */ -#define SBCL_IO 0x01 /* I/O ro */ -#define SBCL_PHASE_CMDOUT SBCL_CD -#define SBCL_PHASE_DATAIN SBCL_IO -#define SBCL_PHASE_DATAOUT 0 -#define SBCL_PHASE_MSGIN (SBCL_CD|SBCL_IO|SBCL_MSG) -#define SBCL_PHASE_MSGOUT (SBCL_CD|SBCL_MSG) -#define SBCL_PHASE_STATIN (SBCL_CD|SBCL_IO) -#define SBCL_PHASE_MASK (SBCL_CD|SBCL_IO|SBCL_MSG) -/* - * Synchronous SCSI Clock Control bits - * 0 - set by DCNTL - * 1 - SCLK / 1.0 - * 2 - SCLK / 1.5 - * 3 - SCLK / 2.0 - */ -#define SBCL_SSCF1 0x02 /* wo, -66 only */ -#define SBCL_SSCF0 0x01 /* wo, -66 only */ -#define SBCL_SSCF_MASK 0x03 - -/* - * XXX note : when reading the DSTAT and STAT registers to clear interrupts, - * insure that 10 clocks elapse between the two - */ -/* DMA status ro */ -#define DSTAT_REG 0x0c -#define DSTAT_DFE 0x80 /* DMA FIFO empty */ -#define DSTAT_800_MDPE 0x40 /* Master Data Parity Error */ -#define DSTAT_800_BF 0x20 /* Bus Fault */ -#define DSTAT_ABRT 0x10 /* Aborted - set on error */ -#define DSTAT_SSI 0x08 /* SCRIPTS single step interrupt */ -#define DSTAT_SIR 0x04 /* SCRIPTS interrupt received - - set when INT instruction is - executed */ -#define DSTAT_WTD 0x02 /* Watchdog timeout detected */ -#define DSTAT_OPC 0x01 /* Illegal instruction */ -#define DSTAT_800_IID 0x01 /* Same thing, different name */ - - -/* NCR53c800 moves this stuff into SIST0 */ -#define SSTAT0_REG 0x0d /* SCSI status 0 ro */ -#define SIST0_REG_800 0x42 -#define SSTAT0_MA 0x80 /* ini : phase mismatch, - * tgt : ATN/ asserted - */ -#define SSTAT0_CMP 0x40 /* function complete */ -#define SSTAT0_700_STO 0x20 /* Selection or reselection timeout */ -#define SIST0_800_SEL 0x20 /* Selected */ -#define SSTAT0_700_SEL 0x10 /* Selected or reselected */ -#define SIST0_800_RSL 0x10 /* Reselected */ -#define SSTAT0_SGE 0x08 /* SCSI gross error */ -#define SSTAT0_UDC 0x04 /* Unexpected disconnect */ -#define SSTAT0_RST 0x02 /* SCSI RST/ received */ -#define SSTAT0_PAR 0x01 /* Parity error */ - -/* And uses SSTAT0 for what was SSTAT1 */ - -#define SSTAT1_REG 0x0e /* SCSI status 1 ro */ -#define SSTAT1_ILF 0x80 /* SIDL full */ -#define SSTAT1_ORF 0x40 /* SODR full */ -#define SSTAT1_OLF 0x20 /* SODL full */ -#define SSTAT1_AIP 0x10 /* Arbitration in progress */ -#define SSTAT1_LOA 0x08 /* Lost arbitration */ -#define SSTAT1_WOA 0x04 /* Won arbitration */ -#define SSTAT1_RST 0x02 /* Instant readout of RST/ */ -#define SSTAT1_SDP 0x01 /* Instant readout of SDP/ */ - -#define SSTAT2_REG 0x0f /* SCSI status 2 ro */ -#define SSTAT2_FF3 0x80 /* number of bytes in synchronous */ -#define SSTAT2_FF2 0x40 /* data FIFO */ -#define SSTAT2_FF1 0x20 -#define SSTAT2_FF0 0x10 -#define SSTAT2_FF_MASK 0xf0 -#define SSTAT2_FF_SHIFT 4 - -/* - * Latched signals, latched on the leading edge of REQ/ for initiators, - * ACK/ for targets. - */ -#define SSTAT2_SDP 0x08 /* SDP */ -#define SSTAT2_MSG 0x04 /* MSG */ -#define SSTAT2_CD 0x02 /* C/D */ -#define SSTAT2_IO 0x01 /* I/O */ -#define SSTAT2_PHASE_CMDOUT SSTAT2_CD -#define SSTAT2_PHASE_DATAIN SSTAT2_IO -#define SSTAT2_PHASE_DATAOUT 0 -#define SSTAT2_PHASE_MSGIN (SSTAT2_CD|SSTAT2_IO|SSTAT2_MSG) -#define SSTAT2_PHASE_MSGOUT (SSTAT2_CD|SSTAT2_MSG) -#define SSTAT2_PHASE_STATIN (SSTAT2_CD|SSTAT2_IO) -#define SSTAT2_PHASE_MASK (SSTAT2_CD|SSTAT2_IO|SSTAT2_MSG) - - -/* NCR53c700-66 only */ -#define SCRATCHA_REG_00 0x10 /* through 0x13 Scratch A rw */ -/* NCR53c710 and higher */ -#define DSA_REG 0x10 /* DATA structure address */ - -#define CTEST0_REG_700 0x14 /* Chip test 0 ro */ -#define CTEST0_REG_800 0x18 /* Chip test 0 rw, general purpose */ -/* 0x80 - 0x04 are reserved */ -#define CTEST0_700_RTRG 0x02 /* Real target mode */ -#define CTEST0_700_DDIR 0x01 /* Data direction, 1 = - * SCSI bus to host, 0 = - * host to SCSI. - */ - -#define CTEST1_REG_700 0x15 /* Chip test 1 ro */ -#define CTEST1_REG_800 0x19 /* Chip test 1 ro */ -#define CTEST1_FMT3 0x80 /* Identify which byte lanes are empty */ -#define CTEST1_FMT2 0x40 /* in the DMA FIFO */ -#define CTEST1_FMT1 0x20 -#define CTEST1_FMT0 0x10 - -#define CTEST1_FFL3 0x08 /* Identify which bytes lanes are full */ -#define CTEST1_FFL2 0x04 /* in the DMA FIFO */ -#define CTEST1_FFL1 0x02 -#define CTEST1_FFL0 0x01 - -#define CTEST2_REG_700 0x16 /* Chip test 2 ro */ -#define CTEST2_REG_800 0x1a /* Chip test 2 ro */ - -#define CTEST2_800_DDIR 0x80 /* 1 = SCSI->host */ -#define CTEST2_800_SIGP 0x40 /* A copy of SIGP in ISTAT. - Reading this register clears */ -#define CTEST2_800_CIO 0x20 /* Configured as IO */. -#define CTEST2_800_CM 0x10 /* Configured as memory */ - -/* 0x80 - 0x40 are reserved on 700 series chips */ -#define CTEST2_700_SOFF 0x20 /* SCSI Offset Compare, - * As an initiator, this bit is - * one when the synchronous offset - * is zero, as a target this bit - * is one when the synchronous - * offset is at the maximum - * defined in SXFER - */ -#define CTEST2_700_SFP 0x10 /* SCSI FIFO parity bit, - * reading CTEST3 unloads a byte - * from the FIFO and sets this - */ -#define CTEST2_700_DFP 0x08 /* DMA FIFO parity bit, - * reading CTEST6 unloads a byte - * from the FIFO and sets this - */ -#define CTEST2_TEOP 0x04 /* SCSI true end of process, - * indicates a totally finished - * transfer - */ -#define CTEST2_DREQ 0x02 /* Data request signal */ -/* 0x01 is reserved on 700 series chips */ -#define CTEST2_800_DACK 0x01 - -/* - * Chip test 3 ro - * Unloads the bottom byte of the eight deep SCSI synchronous FIFO, - * check SSTAT2 FIFO full bits to determine size. Note that a GROSS - * error results if a read is attempted on this register. Also note - * that 16 and 32 bit reads of this register will cause corruption. - */ -#define CTEST3_REG_700 0x17 -/* Chip test 3 rw */ -#define CTEST3_REG_800 0x1b -#define CTEST3_800_V3 0x80 /* Chip revision */ -#define CTEST3_800_V2 0x40 -#define CTEST3_800_V1 0x20 -#define CTEST3_800_V0 0x10 -#define CTEST3_800_FLF 0x08 /* Flush DMA FIFO */ -#define CTEST3_800_CLF 0x04 /* Clear DMA FIFO */ -#define CTEST3_800_FM 0x02 /* Fetch mode pin */ -/* bit 0 is reserved on 800 series chips */ - -#define CTEST4_REG_700 0x18 /* Chip test 4 rw */ -#define CTEST4_REG_800 0x21 /* Chip test 4 rw */ -/* 0x80 is reserved on 700 series chips */ -#define CTEST4_800_BDIS 0x80 /* Burst mode disable */ -#define CTEST4_ZMOD 0x40 /* High impedance mode */ -#define CTEST4_SZM 0x20 /* SCSI bus high impedance */ -#define CTEST4_700_SLBE 0x10 /* SCSI loopback enabled */ -#define CTEST4_800_SRTM 0x10 /* Shadow Register Test Mode */ -#define CTEST4_700_SFWR 0x08 /* SCSI FIFO write enable, - * redirects writes from SODL - * to the SCSI FIFO. - */ -#define CTEST4_800_MPEE 0x08 /* Enable parity checking - during master cycles on PCI - bus */ - -/* - * These bits send the contents of the CTEST6 register to the appropriate - * byte lane of the 32 bit DMA FIFO. Normal operation is zero, otherwise - * the high bit means the low two bits select the byte lane. - */ -#define CTEST4_FBL2 0x04 -#define CTEST4_FBL1 0x02 -#define CTEST4_FBL0 0x01 -#define CTEST4_FBL_MASK 0x07 -#define CTEST4_FBL_0 0x04 /* Select DMA FIFO byte lane 0 */ -#define CTEST4_FBL_1 0x05 /* Select DMA FIFO byte lane 1 */ -#define CTEST4_FBL_2 0x06 /* Select DMA FIFO byte lane 2 */ -#define CTEST4_FBL_3 0x07 /* Select DMA FIFO byte lane 3 */ -#define CTEST4_800_SAVE (CTEST4_800_BDIS) - - -#define CTEST5_REG_700 0x19 /* Chip test 5 rw */ -#define CTEST5_REG_800 0x22 /* Chip test 5 rw */ -/* - * Clock Address Incrementor. When set, it increments the - * DNAD register to the next bus size boundary. It automatically - * resets itself when the operation is complete. - */ -#define CTEST5_ADCK 0x80 -/* - * Clock Byte Counter. When set, it decrements the DBC register to - * the next bus size boundary. - */ -#define CTEST5_BBCK 0x40 -/* - * Reset SCSI Offset. Setting this bit to 1 clears the current offset - * pointer in the SCSI synchronous offset counter (SSTAT). This bit - * is set to 1 if a SCSI Gross Error Condition occurs. The offset should - * be cleared when a synchronous transfer fails. When written, it is - * automatically cleared after the SCSI synchronous offset counter is - * reset. - */ -/* Bit 5 is reserved on 800 series chips */ -#define CTEST5_700_ROFF 0x20 -/* - * Master Control for Set or Reset pulses. When 1, causes the low - * four bits of register to set when set, 0 causes the low bits to - * clear when set. - */ -#define CTEST5_MASR 0x10 -#define CTEST5_DDIR 0x08 /* DMA direction */ -/* - * Bits 2-0 are reserved on 800 series chips - */ -#define CTEST5_700_EOP 0x04 /* End of process */ -#define CTEST5_700_DREQ 0x02 /* Data request */ -#define CTEST5_700_DACK 0x01 /* Data acknowledge */ - -/* - * Chip test 6 rw - writing to this register writes to the byte - * lane in the DMA FIFO as determined by the FBL bits in the CTEST4 - * register. - */ -#define CTEST6_REG_700 0x1a -#define CTEST6_REG_800 0x23 - -#define CTEST7_REG 0x1b /* Chip test 7 rw */ -/* 0x80 - 0x40 are reserved on NCR53c700 and NCR53c700-66 chips */ -#define CTEST7_10_CDIS 0x80 /* Cache burst disable */ -#define CTEST7_10_SC1 0x40 /* Snoop control bits */ -#define CTEST7_10_SC0 0x20 -#define CTEST7_10_SC_MASK 0x60 -/* 0x20 is reserved on the NCR53c700 */ -#define CTEST7_0060_FM 0x20 /* Fetch mode */ -#define CTEST7_STD 0x10 /* Selection timeout disable */ -#define CTEST7_DFP 0x08 /* DMA FIFO parity bit for CTEST6 */ -#define CTEST7_EVP 0x04 /* 1 = host bus even parity, 0 = odd */ -#define CTEST7_10_TT1 0x02 /* Transfer type */ -#define CTEST7_00_DC 0x02 /* Set to drive DC low during instruction - fetch */ -#define CTEST7_DIFF 0x01 /* Differential mode */ - -#define CTEST7_SAVE ( CTEST7_EVP | CTEST7_DIFF ) - - -#define TEMP_REG 0x1c /* through 0x1f Temporary stack rw */ - -#define DFIFO_REG 0x20 /* DMA FIFO rw */ -/* - * 0x80 is reserved on the NCR53c710, the CLF and FLF bits have been - * moved into the CTEST8 register. - */ -#define DFIFO_00_FLF 0x80 /* Flush DMA FIFO to memory */ -#define DFIFO_00_CLF 0x40 /* Clear DMA and SCSI FIFOs */ -#define DFIFO_BO6 0x40 -#define DFIFO_BO5 0x20 -#define DFIFO_BO4 0x10 -#define DFIFO_BO3 0x08 -#define DFIFO_BO2 0x04 -#define DFIFO_BO1 0x02 -#define DFIFO_BO0 0x01 -#define DFIFO_10_BO_MASK 0x7f /* 7 bit counter */ -#define DFIFO_00_BO_MASK 0x3f /* 6 bit counter */ - -/* - * Interrupt status rw - * Note that this is the only register which can be read while SCSI - * SCRIPTS are being executed. - */ -#define ISTAT_REG_700 0x21 -#define ISTAT_REG_800 0x14 -#define ISTAT_ABRT 0x80 /* Software abort, write - *1 to abort, wait for interrupt. */ -/* 0x40 and 0x20 are reserved on NCR53c700 and NCR53c700-66 chips */ -#define ISTAT_10_SRST 0x40 /* software reset */ -#define ISTAT_10_SIGP 0x20 /* signal script */ -/* 0x10 is reserved on NCR53c700 series chips */ -#define ISTAT_800_SEM 0x10 /* semaphore */ -#define ISTAT_CON 0x08 /* 1 when connected */ -#define ISTAT_800_INTF 0x04 /* Interrupt on the fly */ -#define ISTAT_700_PRE 0x04 /* Pointer register empty. - * Set to 1 when DSPS and DSP - * registers are empty in pipeline - * mode, always set otherwise. - */ -#define ISTAT_SIP 0x02 /* SCSI interrupt pending from - * SCSI portion of SIOP see - * SSTAT0 - */ -#define ISTAT_DIP 0x01 /* DMA interrupt pending - * see DSTAT - */ - -/* NCR53c700-66 and NCR53c710 only */ -#define CTEST8_REG 0x22 /* Chip test 8 rw */ -#define CTEST8_0066_EAS 0x80 /* Enable alternate SCSI clock, - * ie read from SCLK/ rather than CLK/ - */ -#define CTEST8_0066_EFM 0x40 /* Enable fetch and master outputs */ -#define CTEST8_0066_GRP 0x20 /* Generate Receive Parity for - * pass through. This insures that - * bad parity won't reach the host - * bus. - */ -#define CTEST8_0066_TE 0x10 /* TolerANT enable. Enable - * active negation, should only - * be used for slow SCSI - * non-differential. - */ -#define CTEST8_0066_HSC 0x08 /* Halt SCSI clock */ -#define CTEST8_0066_SRA 0x04 /* Shorten REQ/ACK filtering, - * must be set for fast SCSI-II - * speeds. - */ -#define CTEST8_0066_DAS 0x02 /* Disable automatic target/initiator - * switching. - */ -#define CTEST8_0066_LDE 0x01 /* Last disconnect enable. - * The status of pending - * disconnect is maintained by - * the core, eliminating - * the possibility of missing a - * selection or reselection - * while waiting to fetch a - * WAIT DISCONNECT opcode. - */ - -#define CTEST8_10_V3 0x80 /* Chip revision */ -#define CTEST8_10_V2 0x40 -#define CTEST8_10_V1 0x20 -#define CTEST8_10_V0 0x10 -#define CTEST8_10_V_MASK 0xf0 -#define CTEST8_10_FLF 0x08 /* Flush FIFOs */ -#define CTEST8_10_CLF 0x04 /* Clear FIFOs */ -#define CTEST8_10_FM 0x02 /* Fetch pin mode */ -#define CTEST8_10_SM 0x01 /* Snoop pin mode */ - - -/* - * The CTEST9 register may be used to differentiate between a - * NCR53c700 and a NCR53c710. - * - * Write 0xff to this register. - * Read it. - * If the contents are 0xff, it is a NCR53c700 - * If the contents are 0x00, it is a NCR53c700-66 first revision - * If the contents are some other value, it is some other NCR53c700-66 - */ -#define CTEST9_REG_00 0x23 /* Chip test 9 ro */ -#define LCRC_REG_10 0x23 - -/* - * 0x24 through 0x27 are the DMA byte counter register. Instructions - * write their high 8 bits into the DCMD register, the low 24 bits into - * the DBC register. - * - * Function is dependent on the command type being executed. - */ - - -#define DBC_REG 0x24 -/* - * For Block Move Instructions, DBC is a 24 bit quantity representing - * the number of bytes to transfer. - * For Transfer Control Instructions, DBC is bit fielded as follows : - */ -/* Bits 20 - 23 should be clear */ -#define DBC_TCI_TRUE (1 << 19) /* Jump when true */ -#define DBC_TCI_COMPARE_DATA (1 << 18) /* Compare data */ -#define DBC_TCI_COMPARE_PHASE (1 << 17) /* Compare phase with DCMD field */ -#define DBC_TCI_WAIT_FOR_VALID (1 << 16) /* Wait for REQ */ -/* Bits 8 - 15 are reserved on some implementations ? */ -#define DBC_TCI_MASK_MASK 0xff00 /* Mask for data compare */ -#define DBC_TCI_MASK_SHIFT 8 -#define DBC_TCI_DATA_MASK 0xff /* Data to be compared */ -#define DBC_TCI_DATA_SHIFT 0 - -#define DBC_RWRI_IMMEDIATE_MASK 0xff00 /* Immediate data */ -#define DBC_RWRI_IMMEDIATE_SHIFT 8 /* Amount to shift */ -#define DBC_RWRI_ADDRESS_MASK 0x3f0000 /* Register address */ -#define DBC_RWRI_ADDRESS_SHIFT 16 - - -/* - * DMA command r/w - */ -#define DCMD_REG 0x27 -#define DCMD_TYPE_MASK 0xc0 /* Masks off type */ -#define DCMD_TYPE_BMI 0x00 /* Indicates a Block Move instruction */ -#define DCMD_BMI_IO 0x01 /* I/O, CD, and MSG bits selecting */ -#define DCMD_BMI_CD 0x02 /* the phase for the block MOVE */ -#define DCMD_BMI_MSG 0x04 /* instruction */ - -#define DCMD_BMI_OP_MASK 0x18 /* mask for opcode */ -#define DCMD_BMI_OP_MOVE_T 0x00 /* MOVE */ -#define DCMD_BMI_OP_MOVE_I 0x08 /* MOVE Initiator */ - -#define DCMD_BMI_INDIRECT 0x20 /* Indirect addressing */ - -#define DCMD_TYPE_TCI 0x80 /* Indicates a Transfer Control - instruction */ -#define DCMD_TCI_IO 0x01 /* I/O, CD, and MSG bits selecting */ -#define DCMD_TCI_CD 0x02 /* the phase for the block MOVE */ -#define DCMD_TCI_MSG 0x04 /* instruction */ -#define DCMD_TCI_OP_MASK 0x38 /* mask for opcode */ -#define DCMD_TCI_OP_JUMP 0x00 /* JUMP */ -#define DCMD_TCI_OP_CALL 0x08 /* CALL */ -#define DCMD_TCI_OP_RETURN 0x10 /* RETURN */ -#define DCMD_TCI_OP_INT 0x18 /* INT */ - -#define DCMD_TYPE_RWRI 0x40 /* Indicates I/O or register Read/Write - instruction */ -#define DCMD_RWRI_OPC_MASK 0x38 /* Opcode mask */ -#define DCMD_RWRI_OPC_WRITE 0x28 /* Write SFBR to register */ -#define DCMD_RWRI_OPC_READ 0x30 /* Read register to SFBR */ -#define DCMD_RWRI_OPC_MODIFY 0x38 /* Modify in place */ - -#define DCMD_RWRI_OP_MASK 0x07 -#define DCMD_RWRI_OP_MOVE 0x00 -#define DCMD_RWRI_OP_SHL 0x01 -#define DCMD_RWRI_OP_OR 0x02 -#define DCMD_RWRI_OP_XOR 0x03 -#define DCMD_RWRI_OP_AND 0x04 -#define DCMD_RWRI_OP_SHR 0x05 -#define DCMD_RWRI_OP_ADD 0x06 -#define DCMD_RWRI_OP_ADDC 0x07 - -#define DCMD_TYPE_MMI 0xc0 /* Indicates a Memory Move instruction - (three words) */ - - -#define DNAD_REG 0x28 /* through 0x2b DMA next address for - data */ -#define DSP_REG 0x2c /* through 0x2f DMA SCRIPTS pointer rw */ -#define DSPS_REG 0x30 /* through 0x33 DMA SCRIPTS pointer - save rw */ -#define DMODE_REG_00 0x34 /* DMA mode rw */ -#define DMODE_00_BL1 0x80 /* Burst length bits */ -#define DMODE_00_BL0 0x40 -#define DMODE_BL_MASK 0xc0 -/* Burst lengths (800) */ -#define DMODE_BL_2 0x00 /* 2 transfer */ -#define DMODE_BL_4 0x40 /* 4 transfers */ -#define DMODE_BL_8 0x80 /* 8 transfers */ -#define DMODE_BL_16 0xc0 /* 16 transfers */ - -#define DMODE_10_BL_1 0x00 /* 1 transfer */ -#define DMODE_10_BL_2 0x40 /* 2 transfers */ -#define DMODE_10_BL_4 0x80 /* 4 transfers */ -#define DMODE_10_BL_8 0xc0 /* 8 transfers */ -#define DMODE_10_FC2 0x20 /* Driven to FC2 pin */ -#define DMODE_10_FC1 0x10 /* Driven to FC1 pin */ -#define DMODE_710_PD 0x08 /* Program/data on FC0 pin */ -#define DMODE_710_UO 0x02 /* User prog. output */ - -#define DMODE_700_BW16 0x20 /* Host buswidth = 16 */ -#define DMODE_700_286 0x10 /* 286 mode */ -#define DMODE_700_IOM 0x08 /* Transfer to IO port */ -#define DMODE_700_FAM 0x04 /* Fixed address mode */ -#define DMODE_700_PIPE 0x02 /* Pipeline mode disables - * automatic fetch / exec - */ -#define DMODE_MAN 0x01 /* Manual start mode, - * requires a 1 to be written - * to the start DMA bit in the DCNTL - * register to run scripts - */ - -#define DMODE_700_SAVE ( DMODE_00_BL_MASK | DMODE_00_BW16 | DMODE_00_286 ) - -/* NCR53c800 series only */ -#define SCRATCHA_REG_800 0x34 /* through 0x37 Scratch A rw */ -/* NCR53c710 only */ -#define SCRATCHB_REG_10 0x34 /* through 0x37 scratch B rw */ - -#define DMODE_REG_10 0x38 /* DMA mode rw, NCR53c710 and newer */ -#define DMODE_800_SIOM 0x20 /* Source IO = 1 */ -#define DMODE_800_DIOM 0x10 /* Destination IO = 1 */ -#define DMODE_800_ERL 0x08 /* Enable Read Line */ - -/* 35-38 are reserved on 700 and 700-66 series chips */ -#define DIEN_REG 0x39 /* DMA interrupt enable rw */ -/* 0x80, 0x40, and 0x20 are reserved on 700-series chips */ -#define DIEN_800_MDPE 0x40 /* Master data parity error */ -#define DIEN_800_BF 0x20 /* BUS fault */ -#define DIEN_700_BF 0x20 /* BUS fault */ -#define DIEN_ABRT 0x10 /* Enable aborted interrupt */ -#define DIEN_SSI 0x08 /* Enable single step interrupt */ -#define DIEN_SIR 0x04 /* Enable SCRIPTS INT command - * interrupt - */ -/* 0x02 is reserved on 800 series chips */ -#define DIEN_700_WTD 0x02 /* Enable watchdog timeout interrupt */ -#define DIEN_700_OPC 0x01 /* Enable illegal instruction - * interrupt - */ -#define DIEN_800_IID 0x01 /* Same meaning, different name */ - -/* - * DMA watchdog timer rw - * set in 16 CLK input periods. - */ -#define DWT_REG 0x3a - -/* DMA control rw */ -#define DCNTL_REG 0x3b -#define DCNTL_700_CF1 0x80 /* Clock divisor bits */ -#define DCNTL_700_CF0 0x40 -#define DCNTL_700_CF_MASK 0xc0 -/* Clock divisors Divisor SCLK range (MHZ) */ -#define DCNTL_700_CF_2 0x00 /* 2.0 37.51-50.00 */ -#define DCNTL_700_CF_1_5 0x40 /* 1.5 25.01-37.50 */ -#define DCNTL_700_CF_1 0x80 /* 1.0 16.67-25.00 */ -#define DCNTL_700_CF_3 0xc0 /* 3.0 50.01-66.67 (53c700-66) */ - -#define DCNTL_700_S16 0x20 /* Load scripts 16 bits at a time */ -#define DCNTL_SSM 0x10 /* Single step mode */ -#define DCNTL_700_LLM 0x08 /* Low level mode, can only be set - * after selection */ -#define DCNTL_800_IRQM 0x08 /* Totem pole IRQ pin */ -#define DCNTL_STD 0x04 /* Start DMA / SCRIPTS */ -/* 0x02 is reserved */ -#define DCNTL_00_RST 0x01 /* Software reset, resets everything - * but 286 mode bit in DMODE. On the - * NCR53c710, this bit moved to CTEST8 - */ -#define DCNTL_10_COM 0x01 /* 700 software compatibility mode */ -#define DCNTL_10_EA 0x20 /* Enable Ack - needed for MVME16x */ - -#define DCNTL_700_SAVE ( DCNTL_CF_MASK | DCNTL_S16) - - -/* NCR53c700-66 only */ -#define SCRATCHB_REG_00 0x3c /* through 0x3f scratch b rw */ -#define SCRATCHB_REG_800 0x5c /* through 0x5f scratch b rw */ -/* NCR53c710 only */ -#define ADDER_REG_10 0x3c /* Adder, NCR53c710 only */ - -#define SIEN1_REG_800 0x41 -#define SIEN1_800_STO 0x04 /* selection/reselection timeout */ -#define SIEN1_800_GEN 0x02 /* general purpose timer */ -#define SIEN1_800_HTH 0x01 /* handshake to handshake */ - -#define SIST1_REG_800 0x43 -#define SIST1_800_STO 0x04 /* selection/reselection timeout */ -#define SIST1_800_GEN 0x02 /* general purpose timer */ -#define SIST1_800_HTH 0x01 /* handshake to handshake */ - -#define SLPAR_REG_800 0x44 /* Parity */ - -#define MACNTL_REG_800 0x46 /* Memory access control */ -#define MACNTL_800_TYP3 0x80 -#define MACNTL_800_TYP2 0x40 -#define MACNTL_800_TYP1 0x20 -#define MACNTL_800_TYP0 0x10 -#define MACNTL_800_DWR 0x08 -#define MACNTL_800_DRD 0x04 -#define MACNTL_800_PSCPT 0x02 -#define MACNTL_800_SCPTS 0x01 - -#define GPCNTL_REG_800 0x47 /* General Purpose Pin Control */ - -/* Timeouts are expressed such that 0=off, 1=100us, doubling after that */ -#define STIME0_REG_800 0x48 /* SCSI Timer Register 0 */ -#define STIME0_800_HTH_MASK 0xf0 /* Handshake to Handshake timeout */ -#define STIME0_800_HTH_SHIFT 4 -#define STIME0_800_SEL_MASK 0x0f /* Selection timeout */ -#define STIME0_800_SEL_SHIFT 0 - -#define STIME1_REG_800 0x49 -#define STIME1_800_GEN_MASK 0x0f /* General purpose timer */ - -#define RESPID_REG_800 0x4a /* Response ID, bit fielded. 8 - bits on narrow chips, 16 on WIDE */ - -#define STEST0_REG_800 0x4c -#define STEST0_800_SLT 0x08 /* Selection response logic test */ -#define STEST0_800_ART 0x04 /* Arbitration priority encoder test */ -#define STEST0_800_SOZ 0x02 /* Synchronous offset zero */ -#define STEST0_800_SOM 0x01 /* Synchronous offset maximum */ - -#define STEST1_REG_800 0x4d -#define STEST1_800_SCLK 0x80 /* Disable SCSI clock */ - -#define STEST2_REG_800 0x4e -#define STEST2_800_SCE 0x80 /* Enable SOCL/SODL */ -#define STEST2_800_ROF 0x40 /* Reset SCSI sync offset */ -#define STEST2_800_SLB 0x10 /* Enable SCSI loopback mode */ -#define STEST2_800_SZM 0x08 /* SCSI high impedance mode */ -#define STEST2_800_EXT 0x02 /* Extend REQ/ACK filter 30 to 60ns */ -#define STEST2_800_LOW 0x01 /* SCSI low level mode */ - -#define STEST3_REG_800 0x4f -#define STEST3_800_TE 0x80 /* Enable active negation */ -#define STEST3_800_STR 0x40 /* SCSI FIFO test read */ -#define STEST3_800_HSC 0x20 /* Halt SCSI clock */ -#define STEST3_800_DSI 0x10 /* Disable single initiator response */ -#define STEST3_800_TTM 0x04 /* Time test mode */ -#define STEST3_800_CSF 0x02 /* Clear SCSI FIFO */ -#define STEST3_800_STW 0x01 /* SCSI FIFO test write */ - -#define OPTION_PARITY 0x1 /* Enable parity checking */ -#define OPTION_TAGGED_QUEUE 0x2 /* Enable SCSI-II tagged queuing */ -#define OPTION_700 0x8 /* Always run NCR53c700 scripts */ -#define OPTION_INTFLY 0x10 /* Use INTFLY interrupts */ -#define OPTION_DEBUG_INTR 0x20 /* Debug interrupts */ -#define OPTION_DEBUG_INIT_ONLY 0x40 /* Run initialization code and - simple test code, return - DID_NO_CONNECT if any SCSI - commands are attempted. */ -#define OPTION_DEBUG_READ_ONLY 0x80 /* Return DID_ERROR if any - SCSI write is attempted */ -#define OPTION_DEBUG_TRACE 0x100 /* Animated trace mode, print - each address and instruction - executed to debug buffer. */ -#define OPTION_DEBUG_SINGLE 0x200 /* stop after executing one - instruction */ -#define OPTION_SYNCHRONOUS 0x400 /* Enable sync SCSI. */ -#define OPTION_MEMORY_MAPPED 0x800 /* NCR registers have valid - memory mapping */ -#define OPTION_IO_MAPPED 0x1000 /* NCR registers have valid - I/O mapping */ -#define OPTION_DEBUG_PROBE_ONLY 0x2000 /* Probe only, don't even init */ -#define OPTION_DEBUG_TESTS_ONLY 0x4000 /* Probe, init, run selected tests */ -#define OPTION_DEBUG_TEST0 0x08000 /* Run test 0 */ -#define OPTION_DEBUG_TEST1 0x10000 /* Run test 1 */ -#define OPTION_DEBUG_TEST2 0x20000 /* Run test 2 */ -#define OPTION_DEBUG_DUMP 0x40000 /* Dump commands */ -#define OPTION_DEBUG_TARGET_LIMIT 0x80000 /* Only talk to target+luns specified */ -#define OPTION_DEBUG_NCOMMANDS_LIMIT 0x100000 /* Limit the number of commands */ -#define OPTION_DEBUG_SCRIPT 0x200000 /* Print when checkpoints are passed */ -#define OPTION_DEBUG_FIXUP 0x400000 /* print fixup values */ -#define OPTION_DEBUG_DSA 0x800000 -#define OPTION_DEBUG_CORRUPTION 0x1000000 /* Detect script corruption */ -#define OPTION_DEBUG_SDTR 0x2000000 /* Debug SDTR problem */ -#define OPTION_DEBUG_MISMATCH 0x4000000 /* Debug phase mismatches */ -#define OPTION_DISCONNECT 0x8000000 /* Allow disconnect */ -#define OPTION_DEBUG_DISCONNECT 0x10000000 -#define OPTION_ALWAYS_SYNCHRONOUS 0x20000000 /* Negotiate sync. transfers - on power up */ -#define OPTION_DEBUG_QUEUES 0x80000000 -#define OPTION_DEBUG_ALLOCATION 0x100000000LL -#define OPTION_DEBUG_SYNCHRONOUS 0x200000000LL /* Sanity check SXFER and - SCNTL3 registers */ -#define OPTION_NO_ASYNC 0x400000000LL /* Don't automagically send - SDTR for async transfers when - we haven't been told to do - a synchronous transfer. */ -#define OPTION_NO_PRINT_RACE 0x800000000LL /* Don't print message when - the reselect/WAIT DISCONNECT - race condition hits */ -#if !defined(PERM_OPTIONS) -#define PERM_OPTIONS 0 -#endif - -/* - * Some data which is accessed by the NCR chip must be 4-byte aligned. - * For some hosts the default is less than that (eg. 68K uses 2-byte). - * Alignment has only been forced where it is important; also if one - * 32 bit structure field is aligned then it is assumed that following - * 32 bit fields are also aligned. Take care when adding fields - * which are other than 32 bit. - */ - -struct NCR53c7x0_synchronous { - u32 select_indirect /* Value used for indirect selection */ - __attribute__ ((aligned (4))); - u32 sscf_710; /* Used to set SSCF bits for 710 */ - u32 script[8]; /* Size ?? Script used when target is - reselected */ - unsigned char synchronous_want[5]; /* Per target desired SDTR */ -/* - * Set_synchronous programs these, select_indirect and current settings after - * int_debug_should show a match. - */ - unsigned char sxfer_sanity, scntl3_sanity; -}; - -#define CMD_FLAG_SDTR 1 /* Initiating synchronous - transfer negotiation */ -#define CMD_FLAG_WDTR 2 /* Initiating wide transfer - negotiation */ -#define CMD_FLAG_DID_SDTR 4 /* did SDTR */ -#define CMD_FLAG_DID_WDTR 8 /* did WDTR */ - -struct NCR53c7x0_table_indirect { - u32 count; - void *address; -}; - -enum ncr_event { - EVENT_NONE = 0, -/* - * Order is IMPORTANT, since these must correspond to the event interrupts - * in 53c7,8xx.scr - */ - - EVENT_ISSUE_QUEUE = 0x5000000, /* 0 Command was added to issue queue */ - EVENT_START_QUEUE, /* 1 Command moved to start queue */ - EVENT_SELECT, /* 2 Command completed selection */ - EVENT_DISCONNECT, /* 3 Command disconnected */ - EVENT_RESELECT, /* 4 Command reselected */ - EVENT_COMPLETE, /* 5 Command completed */ - EVENT_IDLE, /* 6 */ - EVENT_SELECT_FAILED, /* 7 */ - EVENT_BEFORE_SELECT, /* 8 */ - EVENT_RESELECT_FAILED /* 9 */ -}; - -struct NCR53c7x0_event { - enum ncr_event event; /* What type of event */ - unsigned char target; - unsigned char lun; - struct timeval time; - u32 *dsa; /* What's in the DSA register now (virt) */ -/* - * A few things from that SCSI pid so we know what happened after - * the Scsi_Cmnd structure in question may have disappeared. - */ - unsigned long pid; /* The SCSI PID which caused this - event */ - unsigned char cmnd[12]; -}; - -/* - * Things in the NCR53c7x0_cmd structure are split into two parts : - * - * 1. A fixed portion, for things which are not accessed directly by static NCR - * code (ie, are referenced only by the Linux side of the driver, - * or only by dynamically generated code). - * - * 2. The DSA portion, for things which are accessed directly by static NCR - * code. - * - * This is a little ugly, but it - * 1. Avoids conflicts between the NCR code's picture of the structure, and - * Linux code's idea of what it looks like. - * - * 2. Minimizes the pain in the Linux side of the code needed - * to calculate real dsa locations for things, etc. - * - */ - -struct NCR53c7x0_cmd { - void *real; /* Real, unaligned address for - free function */ - void (* free)(void *, int); /* Command to deallocate; NULL - for structures allocated with - scsi_register, etc. */ - Scsi_Cmnd *cmd; /* Associated Scsi_Cmnd - structure, Scsi_Cmnd points - at NCR53c7x0_cmd using - host_scribble structure */ - - int size; /* scsi_malloc'd size of this - structure */ - - int flags; /* CMD_* flags */ - - unsigned char cmnd[12]; /* CDB, copied from Scsi_Cmnd */ - int result; /* Copy to Scsi_Cmnd when done */ - - struct { /* Private non-cached bounce buffer */ - unsigned char buf[256]; - u32 addr; - u32 len; - } bounce; - -/* - * SDTR and WIDE messages are an either/or affair - * in this message, since we will go into message out and send - * _the whole mess_ without dropping out of message out to - * let the target go into message in after sending the first - * message. - */ - - unsigned char select[11]; /* Select message, includes - IDENTIFY - (optional) QUEUE TAG - (optional) SDTR or WDTR - */ - - - volatile struct NCR53c7x0_cmd *next; /* Linux maintained lists (free, - running, eventually finished */ - - - u32 *data_transfer_start; /* Start of data transfer routines */ - u32 *data_transfer_end; /* Address after end of data transfer o - routines */ -/* - * The following three fields were moved from the DSA proper to here - * since only dynamically generated NCR code refers to them, meaning - * we don't need dsa_* absolutes, and it is simpler to let the - * host code refer to them directly. - */ - -/* - * HARD CODED : residual and saved_residual need to agree with the sizes - * used in NCR53c7,8xx.scr. - * - * FIXME: we want to consider the case where we have odd-length - * scatter/gather buffers and a WIDE transfer, in which case - * we'll need to use the CHAIN MOVE instruction. Ick. - */ - u32 residual[6] __attribute__ ((aligned (4))); - /* Residual data transfer which - allows pointer code to work - right. - - [0-1] : Conditional call to - appropriate other transfer - routine. - [2-3] : Residual block transfer - instruction. - [4-5] : Jump to instruction - after splice. - */ - u32 saved_residual[6]; /* Copy of old residual, so we - can get another partial - transfer and still recover - */ - - u32 saved_data_pointer; /* Saved data pointer */ - - u32 dsa_next_addr; /* _Address_ of dsa_next field - in this dsa for RISCy - style constant. */ - - u32 dsa_addr; /* Address of dsa; RISCy style - constant */ - - u32 dsa[0]; /* Variable length (depending - on host type, number of scatter / - gather buffers, etc). */ -}; - -struct NCR53c7x0_break { - u32 *address, old_instruction[2]; - struct NCR53c7x0_break *next; - unsigned char old_size; /* Size of old instruction */ -}; - -/* Indicates that the NCR is not executing code */ -#define STATE_HALTED 0 -/* - * Indicates that the NCR is executing the wait for select / reselect - * script. Only used when running NCR53c700 compatible scripts, only - * state during which an ABORT is _not_ considered an error condition. - */ -#define STATE_WAITING 1 -/* Indicates that the NCR is executing other code. */ -#define STATE_RUNNING 2 -/* - * Indicates that the NCR was being aborted. - */ -#define STATE_ABORTING 3 -/* Indicates that the NCR was successfully aborted. */ -#define STATE_ABORTED 4 -/* Indicates that the NCR has been disabled due to a fatal error */ -#define STATE_DISABLED 5 - -/* - * Where knowledge of SCSI SCRIPT(tm) specified values are needed - * in an interrupt handler, an interrupt handler exists for each - * different SCSI script so we don't have name space problems. - * - * Return values of these handlers are as follows : - */ -#define SPECIFIC_INT_NOTHING 0 /* don't even restart */ -#define SPECIFIC_INT_RESTART 1 /* restart at the next instruction */ -#define SPECIFIC_INT_ABORT 2 /* recoverable error, abort cmd */ -#define SPECIFIC_INT_PANIC 3 /* unrecoverable error, panic */ -#define SPECIFIC_INT_DONE 4 /* normal command completion */ -#define SPECIFIC_INT_BREAK 5 /* break point encountered */ - -struct NCR53c7x0_hostdata { - int size; /* Size of entire Scsi_Host - structure */ - int board; /* set to board type, useful if - we have host specific things, - ie, a general purpose I/O - bit is being used to enable - termination, etc. */ - - int chip; /* set to chip type; 700-66 is - 700-66, rest are last three - digits of part number */ - - char valid_ids[8]; /* Valid SCSI ID's for adapter */ - - u32 *dsp; /* dsp to restart with after - all stacked interrupts are - handled. */ - - unsigned dsp_changed:1; /* Has dsp changed within this - set of stacked interrupts ? */ - - unsigned char dstat; /* Most recent value of dstat */ - unsigned dstat_valid:1; - - unsigned expecting_iid:1; /* Expect IID interrupt */ - unsigned expecting_sto:1; /* Expect STO interrupt */ - - /* - * The code stays cleaner if we use variables with function - * pointers and offsets that are unique for the different - * scripts rather than having a slew of switch(hostdata->chip) - * statements. - * - * It also means that the #defines from the SCSI SCRIPTS(tm) - * don't have to be visible outside of the script-specific - * instructions, preventing name space pollution. - */ - - void (* init_fixup)(struct Scsi_Host *host); - void (* init_save_regs)(struct Scsi_Host *host); - void (* dsa_fixup)(struct NCR53c7x0_cmd *cmd); - void (* soft_reset)(struct Scsi_Host *host); - int (* run_tests)(struct Scsi_Host *host); - - /* - * Called when DSTAT_SIR is set, indicating an interrupt generated - * by the INT instruction, where values are unique for each SCSI - * script. Should return one of the SPEC_* values. - */ - - int (* dstat_sir_intr)(struct Scsi_Host *host, struct NCR53c7x0_cmd *cmd); - - int dsa_len; /* Size of DSA structure */ - - /* - * Location of DSA fields for the SCSI SCRIPT corresponding to this - * chip. - */ - - s32 dsa_start; - s32 dsa_end; - s32 dsa_next; - s32 dsa_prev; - s32 dsa_cmnd; - s32 dsa_select; - s32 dsa_msgout; - s32 dsa_cmdout; - s32 dsa_dataout; - s32 dsa_datain; - s32 dsa_msgin; - s32 dsa_msgout_other; - s32 dsa_write_sync; - s32 dsa_write_resume; - s32 dsa_check_reselect; - s32 dsa_status; - s32 dsa_saved_pointer; - s32 dsa_jump_dest; - - /* - * Important entry points that generic fixup code needs - * to know about, fixed up. - */ - - s32 E_accept_message; - s32 E_command_complete; - s32 E_data_transfer; - s32 E_dsa_code_template; - s32 E_dsa_code_template_end; - s32 E_end_data_transfer; - s32 E_msg_in; - s32 E_initiator_abort; - s32 E_other_transfer; - s32 E_other_in; - s32 E_other_out; - s32 E_target_abort; - s32 E_debug_break; - s32 E_reject_message; - s32 E_respond_message; - s32 E_select; - s32 E_select_msgout; - s32 E_test_0; - s32 E_test_1; - s32 E_test_2; - s32 E_test_3; - s32 E_dsa_zero; - s32 E_cmdout_cmdout; - s32 E_wait_reselect; - s32 E_dsa_code_begin; - - long long options; /* Bitfielded set of options enabled */ - volatile u32 test_completed; /* Test completed */ - int test_running; /* Test currently running */ - s32 test_source - __attribute__ ((aligned (4))); - volatile s32 test_dest; - - volatile int state; /* state of driver, only used for - OPTION_700 */ - - unsigned char dmode; /* - * set to the address of the DMODE - * register for this chip. - */ - unsigned char istat; /* - * set to the address of the ISTAT - * register for this chip. - */ - - int scsi_clock; /* - * SCSI clock in HZ. 0 may be used - * for unknown, although this will - * disable synchronous negotiation. - */ - - volatile int intrs; /* Number of interrupts */ - volatile int resets; /* Number of SCSI resets */ - unsigned char saved_dmode; - unsigned char saved_ctest4; - unsigned char saved_ctest7; - unsigned char saved_dcntl; - unsigned char saved_scntl3; - - unsigned char this_id_mask; - - /* Debugger information */ - struct NCR53c7x0_break *breakpoints, /* Linked list of all break points */ - *breakpoint_current; /* Current breakpoint being stepped - through, NULL if we are running - normally. */ -#ifdef NCR_DEBUG - int debug_size; /* Size of debug buffer */ - volatile int debug_count; /* Current data count */ - volatile char *debug_buf; /* Output ring buffer */ - volatile char *debug_write; /* Current write pointer */ - volatile char *debug_read; /* Current read pointer */ -#endif /* def NCR_DEBUG */ - - /* XXX - primitive debugging junk, remove when working ? */ - int debug_print_limit; /* Number of commands to print - out exhaustive debugging - information for if - OPTION_DEBUG_DUMP is set */ - - unsigned char debug_lun_limit[16]; /* If OPTION_DEBUG_TARGET_LIMIT - set, puke if commands are sent - to other target/lun combinations */ - - int debug_count_limit; /* Number of commands to execute - before puking to limit debugging - output */ - - - volatile unsigned idle:1; /* set to 1 if idle */ - - /* - * Table of synchronous+wide transfer parameters set on a per-target - * basis. - */ - - volatile struct NCR53c7x0_synchronous sync[16] - __attribute__ ((aligned (4))); - - volatile Scsi_Cmnd *issue_queue - __attribute__ ((aligned (4))); - /* waiting to be issued by - Linux driver */ - volatile struct NCR53c7x0_cmd *running_list; - /* commands running, maintained - by Linux driver */ - - volatile struct NCR53c7x0_cmd *ncrcurrent; /* currently connected - nexus, ONLY valid for - NCR53c700/NCR53c700-66 - */ - - volatile struct NCR53c7x0_cmd *spare; /* pointer to spare, - allocated at probe time, - which we can use for - initialization */ - volatile struct NCR53c7x0_cmd *free; - int max_cmd_size; /* Maximum size of NCR53c7x0_cmd - based on number of - scatter/gather segments, etc. - */ - volatile int num_cmds; /* Number of commands - allocated */ - volatile int extra_allocate; - volatile unsigned char cmd_allocated[16]; /* Have we allocated commands - for this target yet? If not, - do so ASAP */ - volatile unsigned char busy[16][8]; /* number of commands - executing on each target - */ - /* - * Eventually, I'll switch to a coroutine for calling - * cmd->done(cmd), etc. so that we can overlap interrupt - * processing with this code for maximum performance. - */ - - volatile struct NCR53c7x0_cmd *finished_queue; - - /* Shared variables between SCRIPT and host driver */ - volatile u32 *schedule - __attribute__ ((aligned (4))); /* Array of JUMPs to dsa_begin - routines of various DSAs. - When not in use, replace - with jump to next slot */ - - - volatile unsigned char msg_buf[16]; /* buffer for messages - other than the command - complete message */ - - /* Per-target default synchronous and WIDE messages */ - volatile unsigned char synchronous_want[16][5]; - volatile unsigned char wide_want[16][4]; - - /* Bit fielded set of targets we want to speak synchronously with */ - volatile u16 initiate_sdtr; - /* Bit fielded set of targets we want to speak wide with */ - volatile u16 initiate_wdtr; - /* Bit fielded list of targets we've talked to. */ - volatile u16 talked_to; - - /* Array of bit-fielded lun lists that we need to request_sense */ - volatile unsigned char request_sense[16]; - - u32 addr_reconnect_dsa_head - __attribute__ ((aligned (4))); /* RISCy style constant, - address of following */ - volatile u32 reconnect_dsa_head; - /* Data identifying nexus we are trying to match during reselection */ - volatile unsigned char reselected_identify; /* IDENTIFY message */ - volatile unsigned char reselected_tag; /* second byte of queue tag - message or 0 */ - - /* These were static variables before we moved them */ - - s32 NCR53c7xx_zero - __attribute__ ((aligned (4))); - s32 NCR53c7xx_sink; - u32 NOP_insn; - char NCR53c7xx_msg_reject; - char NCR53c7xx_msg_abort; - char NCR53c7xx_msg_nop; - - /* - * Following item introduced by RGH to support NCRc710, which is - * VERY brain-dead when it come to memory moves - */ - - /* DSA save area used only by the NCR chip */ - volatile unsigned long saved2_dsa - __attribute__ ((aligned (4))); - - volatile unsigned long emulated_intfly - __attribute__ ((aligned (4))); - - volatile int event_size, event_index; - volatile struct NCR53c7x0_event *events; - - /* If we need to generate code to kill off the currently connected - command, this is where we do it. Should have a BMI instruction - to source or sink the current data, followed by a JUMP - to abort_connected */ - - u32 *abort_script; - - int script_count; /* Size of script in words */ - u32 script[0]; /* Relocated SCSI script */ - -}; - -#define SCSI_IRQ_NONE 255 -#define DMA_NONE 255 -#define IRQ_AUTO 254 -#define DMA_AUTO 254 - -#define BOARD_GENERIC 0 - -#define NCR53c7x0_insn_size(insn) \ - (((insn) & DCMD_TYPE_MASK) == DCMD_TYPE_MMI ? 3 : 2) - - -#define NCR53c7x0_local_declare() \ - volatile unsigned char *NCR53c7x0_address_memory; \ - unsigned int NCR53c7x0_address_io; \ - int NCR53c7x0_memory_mapped - -#define NCR53c7x0_local_setup(host) \ - NCR53c7x0_address_memory = (void *) (host)->base; \ - NCR53c7x0_address_io = (unsigned int) (host)->io_port; \ - NCR53c7x0_memory_mapped = ((struct NCR53c7x0_hostdata *) \ - host->hostdata[0])-> options & OPTION_MEMORY_MAPPED - -#ifdef BIG_ENDIAN -/* These could be more efficient, given that we are always memory mapped, - * but they don't give the same problems as the write macros, so leave - * them. */ -#ifdef __mc68000__ -#define NCR53c7x0_read8(address) \ - ((unsigned int)raw_inb((u32)NCR53c7x0_address_memory + ((u32)(address)^3)) ) - -#define NCR53c7x0_read16(address) \ - ((unsigned int)raw_inw((u32)NCR53c7x0_address_memory + ((u32)(address)^2))) -#else -#define NCR53c7x0_read8(address) \ - (NCR53c7x0_memory_mapped ? \ - (unsigned int)readb((u32)NCR53c7x0_address_memory + ((u32)(address)^3)) : \ - inb(NCR53c7x0_address_io + (address))) - -#define NCR53c7x0_read16(address) \ - (NCR53c7x0_memory_mapped ? \ - (unsigned int)readw((u32)NCR53c7x0_address_memory + ((u32)(address)^2)) : \ - inw(NCR53c7x0_address_io + (address))) -#endif /* mc68000 */ -#else -#define NCR53c7x0_read8(address) \ - (NCR53c7x0_memory_mapped ? \ - (unsigned int)readb((u32)NCR53c7x0_address_memory + (u32)(address)) : \ - inb(NCR53c7x0_address_io + (address))) - -#define NCR53c7x0_read16(address) \ - (NCR53c7x0_memory_mapped ? \ - (unsigned int)readw((u32)NCR53c7x0_address_memory + (u32)(address)) : \ - inw(NCR53c7x0_address_io + (address))) -#endif - -#ifdef __mc68000__ -#define NCR53c7x0_read32(address) \ - ((unsigned int) raw_inl((u32)NCR53c7x0_address_memory + (u32)(address))) -#else -#define NCR53c7x0_read32(address) \ - (NCR53c7x0_memory_mapped ? \ - (unsigned int) readl((u32)NCR53c7x0_address_memory + (u32)(address)) : \ - inl(NCR53c7x0_address_io + (address))) -#endif /* mc68000*/ - -#ifdef BIG_ENDIAN -/* If we are big-endian, then we are not Intel, so probably don't have - * an i/o map as well as a memory map. So, let's assume memory mapped. - * Also, I am having terrible problems trying to persuade the compiler - * not to lay down code which does a read after write for these macros. - * If you remove 'volatile' from writeb() and friends it is ok.... - */ - -#define NCR53c7x0_write8(address,value) \ - *(volatile unsigned char *) \ - ((u32)NCR53c7x0_address_memory + ((u32)(address)^3)) = (value) - -#define NCR53c7x0_write16(address,value) \ - *(volatile unsigned short *) \ - ((u32)NCR53c7x0_address_memory + ((u32)(address)^2)) = (value) - -#define NCR53c7x0_write32(address,value) \ - *(volatile unsigned long *) \ - ((u32)NCR53c7x0_address_memory + ((u32)(address))) = (value) - -#else - -#define NCR53c7x0_write8(address,value) \ - (NCR53c7x0_memory_mapped ? \ - ({writeb((value), (u32)NCR53c7x0_address_memory + (u32)(address)); mb();}) : \ - outb((value), NCR53c7x0_address_io + (address))) - -#define NCR53c7x0_write16(address,value) \ - (NCR53c7x0_memory_mapped ? \ - ({writew((value), (u32)NCR53c7x0_address_memory + (u32)(address)); mb();}) : \ - outw((value), NCR53c7x0_address_io + (address))) - -#define NCR53c7x0_write32(address,value) \ - (NCR53c7x0_memory_mapped ? \ - ({writel((value), (u32)NCR53c7x0_address_memory + (u32)(address)); mb();}) : \ - outl((value), NCR53c7x0_address_io + (address))) - -#endif - -/* Patch arbitrary 32 bit words in the script */ -#define patch_abs_32(script, offset, symbol, value) \ - for (i = 0; i < (sizeof (A_##symbol##_used) / sizeof \ - (u32)); ++i) { \ - (script)[A_##symbol##_used[i] - (offset)] += (value); \ - if (hostdata->options & OPTION_DEBUG_FIXUP) \ - printk("scsi%d : %s reference %d at 0x%x in %s is now 0x%x\n",\ - host->host_no, #symbol, i, A_##symbol##_used[i] - \ - (int)(offset), #script, (script)[A_##symbol##_used[i] - \ - (offset)]); \ - } - -/* Patch read/write instruction immediate field */ -#define patch_abs_rwri_data(script, offset, symbol, value) \ - for (i = 0; i < (sizeof (A_##symbol##_used) / sizeof \ - (u32)); ++i) \ - (script)[A_##symbol##_used[i] - (offset)] = \ - ((script)[A_##symbol##_used[i] - (offset)] & \ - ~DBC_RWRI_IMMEDIATE_MASK) | \ - (((value) << DBC_RWRI_IMMEDIATE_SHIFT) & \ - DBC_RWRI_IMMEDIATE_MASK) - -/* Patch transfer control instruction data field */ -#define patch_abs_tci_data(script, offset, symbol, value) \ - for (i = 0; i < (sizeof (A_##symbol##_used) / sizeof \ - (u32)); ++i) \ - (script)[A_##symbol##_used[i] - (offset)] = \ - ((script)[A_##symbol##_used[i] - (offset)] & \ - ~DBC_TCI_DATA_MASK) | \ - (((value) << DBC_TCI_DATA_SHIFT) & \ - DBC_TCI_DATA_MASK) - -/* Patch field in dsa structure (assignment should be +=?) */ -#define patch_dsa_32(dsa, symbol, word, value) \ - { \ - (dsa)[(hostdata->##symbol - hostdata->dsa_start) / sizeof(u32) \ - + (word)] = (value); \ - if (hostdata->options & OPTION_DEBUG_DSA) \ - printk("scsi : dsa %s symbol %s(%d) word %d now 0x%x\n", \ - #dsa, #symbol, hostdata->##symbol, \ - (word), (u32) (value)); \ - } - -/* Paranoid people could use panic() here. */ -#define FATAL(host) shutdown((host)); - -extern int ncr53c7xx_init(struct scsi_host_template *tpnt, int board, int chip, - unsigned long base, int io_port, int irq, int dma, - long long options, int clock); - -#endif /* NCR53c710_C */ -#endif /* NCR53c710_H */ |
