calmsacibis995
224 lines
6.8 KiB
C
224 lines
6.8 KiB
C
#define SCIP_MAXTARG 16
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#define SCIP_MAXLUN 8
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#define SCIP_MAXQUEUE 128
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#define SCIP_FLOATQUEUE (SCIP_MAXQUEUE - (SCIP_MAXTARG - 1))
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#define SCIP_SCBSIZE 128
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#define SCIP_SCBNUM SCIP_MAXQUEUE
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#define SCIP_MCBNUM 4
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#define SCIP_MEMSIZE (128 * 1024)
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#define SCIPSRAM_INITBLOCK 0x2C000
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#define SCIP_SRAMSIZE 0x20000
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struct sciprequest
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{
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toid_t timeout_id;
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struct dmamap *dmamap;
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struct scsi_request *req;
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struct sciprequest *next;
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};
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struct scip_scb { /* base 0x0 align 0x80 */
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/* Fields filled out by CPU */
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char opcode;
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char target;
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char lun;
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char tag_type;
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char xferfactor; /* min xfer factor to use */
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char offset; /* max sync offset to use */
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short flags; /* SCIP sets this also */
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char scsi_cmd[16];
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char cmd_length;
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char dma_xlatehi;
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short dma_offset;
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int dma_xlatelo;
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int dma_length;
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char sense_length;
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char sense_xlatehi;
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short sense_offset;
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int sense_xlatelo;
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/* reserved for CPU use */
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char reserve[20 - sizeof(void *)];
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struct sciprequest *scipreq;
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/* fields filled out by SCIP */
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char scsi_status;
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char scip_status;
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char sense_gotten;
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char odd_byte;
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int dma_resid;
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char error_data[3];
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char odd_sense_byte;
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int reserve2[2];
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/* reserved for SCIP use */
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int scip_reserved[10];
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uint op_id;
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};
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/*
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* Constants for SCB.flags / struct scip_scb.flags
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*
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* High bits are set by scip, low bits are set by driver
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*/
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#define SCB_DIR 0x0001
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#define SCB_DO_SYNC 0x0002
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#define SCB_DO_WIDE 0x0004
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#define SCB_NO_DISC_ALLOW 0x0008
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#define SCB_SENSE_ACK 0x0010
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#define SCB_ODD_SENSE_BYTE 0x0400
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#define SCB_ODD_BYTE_FLAG 0x4000
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#define SCB_COMPLETE 0x8000
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/*
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* Constants for struct scip_scb.scip_status
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*
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* ILLEGAL_STAT is when the status byte that was returned does not match any
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* defined in the SCSI-2 spec.
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*
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* CHK_COND will have sense data returned with the length of the data in
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* the "sense_gotten" field in the SCB.
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*/
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#define SCIP_STAT_OK 0x0
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#define SCIP_STAT_TIMEOUT 0x4 /* selection timeout */
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#define SCIP_STAT_CCABORT 0x5 /* aborted due to contingent allegiance */
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/* causes error SCB to be generated */
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#define FIRM_UNEXP_RESET 0x10 /* Someone reset the SCSI bus */
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#define FIRM_ERR_IDLE 0x11 /* firmware should have had something to do */
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#define FIRM_ERR_SRCID 0x12 /* scb not valid -- invalid tag (device err),
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or fw error if command is untagged */
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#define FIRM_ERR_RECON_Q 0x13 /* invalid reselection -- no command active
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for the target */
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/* causes SCB to be sent back with bad status */
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#define WD_ERR_UEI 0x20 /* got a UEI from the WD */
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#define WD_ERR_UPHAS 0x21 /* unexpected phase on the SCSI bus */
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#define WD_ERR_PARE 0x22 /* parity error on the SCSI bus */
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#define WD_ERR_STOPU 0x23 /* got STOPU (not UPHASE or PARE) */
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#define WD_ERR_VBSYI 0x24 /* got VBUSY status, should never get this */
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#define WD_ERR_MISC_MSG 0x25 /* unrecognizable message in on SCSI bus */
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#define WD_ERR_UNEXP_REJECT 0x26 /* Unexpected reject message */
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#define WD_ERR_DISC_Q 0x27 /* SCB to remove from DISCONNECT Q not there*/
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#define WD_ERR_BAD_INT 0x28 /* stop or int from WD is invalid */
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#define WD_ERR_RS_Q 0x29 /* SCB to rm from Req sense Q not there */
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#define WD_ERR_LAST_FLAG 0x2a /* WD error, last flag not set */
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struct scip_resetcb { /* base 0x2c000 align 0x800 */
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char opcode;
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char target;
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short flags;
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int lo_iq_remove_base_hi;
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int lo_iq_remove_base_lo;
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int lo_iq_add_base_hi;
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int lo_iq_add_base_lo;
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int lo_cq_add_base_hi;
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int lo_cq_add_base_lo;
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int lo_iq_mask;
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int med_iq_remove_base_hi;
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int med_iq_remove_base_lo;
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int med_iq_add_base_hi;
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int med_iq_add_base_lo;
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int med_cq_add_base_hi;
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int med_cq_add_base_lo;
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int med_iq_mask;
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int hi_req_add_base_hi;
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int hi_req_add_base_lo;
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int error_scb_addr_hi;
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int error_scb_addr_lo;
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int scip_host_id;
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int complete_intr;
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int finish_ptr_hi;
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int finish_ptr_lo;
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int reserved[8];
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int op_id;
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};
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struct scipfinishinfo
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{
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uint high;
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uint med;
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uint low;
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uint error;
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};
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struct scipluninfo
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{
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u_char number;
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u_char l_ca_req:1, /* contingent allegiance req */
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sense_ack:1, /* ack to FW needed after CA */
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exclusive:1; /* exclusive access */
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u_short refcount;
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struct scsi_request *waithead; /* q-head of waiting commands */
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struct scsi_request *waittail; /* q-tail of waiting commands */
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struct sciprequest *active; /* pointer to active list */
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struct scipluninfo *nextwait; /* next lun waiting to issue cmd */
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struct dmamap *sensemap; /* for issuing request sense */
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u_char sense_xlatehi;
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u_short sense_offset;
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u_int sense_xlatelo;
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void (*sense_callback)();
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struct scsi_target_info tinfo; /* info about LUN */
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};
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struct scipunitinfo
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{
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u_char number;
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u_char renegotiate:1, /* renegotiate xfer params */
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scipreqbusy:1, /* unit's scipreq busy */
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wide_supported:1, /* unit supports wide SCSI */
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present:1; /* unit responds to inquiry */
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u_char min_syncperiod;
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u_char max_syncoffset;
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struct scipluninfo *lun[SCIP_MAXLUN];
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struct sciprequest unitreq; /* unit's scipreq */
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mutex_t opensema; /* single thread open and alloc */
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};
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struct scipctlrinfo
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{
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ushort number; /* internal ctlr number */
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ushort quiesce:1, /* don't issue commands */
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dead:1, /* SCIP not responding */
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reset:1, /* reset in progress */
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intr:1, /* current in intr routine */
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restartpend:1, /* restart timeout pending */
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diff:1, /* set if differential */
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external:1, /* set if bus goes external to chassis */
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chan:2; /* channel number on SCIP */
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ushort cmdcount; /* # outstanding commands */
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ushort reset_num; /* number of resets done */
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uint scb_iqadd; /* IQ add pointer */
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uint scb_hicnt; /* count of completed hi-pri */
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uint scb_errcnt; /* count of errors seen */
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toid_t reset_timeout; /* timeout id for reset timeout */
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struct scip_scb *scb_cqremove; /* CQ remove pointer */
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struct scip_scb *scb; /* low pri request queue */
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struct scip_scb *mcb; /* medium pri request queue */
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struct scip_scb *hcb;
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struct scip_scb *ecb;
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struct scipfinishinfo *finish;
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struct scipluninfo *waithead; /* luns waiting to issue cmds */
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struct scipluninfo *waittail; /* last lun in line */
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struct sciprequest *request; /* queue of avail requests */
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struct scsi_request *intrhead; /* queue used during intr */
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struct scsi_request *intrtail; /* queue used during intr */
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volatile u_char *chip_addr; /* KV addr of scip registers */
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char *page; /* extra page for DMA */
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mutex_t lock;
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mutex_t intrlock;
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mutex_t scanlock;
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struct scipunitinfo *unit[SCIP_MAXTARG];
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};
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int scipfw_download(volatile u_char *);
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int scip_earlyinit(int);
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int scip_startup(volatile u_char *);
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void scipintr(eframe_t *, __psunsigned_t);
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