xy and xd drivers from chuck

1 files changed, 227 insertions, 0 deletions

diff --git a/sys/arch/sun3/dev/xyreg.h b/sys/arch/sun3/dev/xyreg.h
new file mode 100644
index 00000000000..b6591e51a37
--- /dev/null
+++ b/sys/arch/sun3/dev/xyreg.h
@@ -0,0 +1,227 @@
+/* $NetBSD: xyreg.h,v 1.1 1995/10/30 20:58:22 gwr Exp $ */
+
+/*
+ *
+ * Copyright (c) 1995 Charles D. Cranor
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Charles D. Cranor.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * x y r e g . h
+ *
+ * this file contains the description of the Xylogics 450/451's hardware
+ * data structures.
+ *
+ * author: Chuck Cranor <chuck@ccrc.wustl.edu>
+ */
+
+#define XYC_MAXDEV    2       /* max devices per controller */
+#define XYC_CTLIOPB   XYC_MAXDEV /* controller's iopb */
+#define XYC_RESETUSEC 1000000 /* max time for xyc reset (same as xdc?) */
+#define XYC_MAXIOPB   (XYC_MAXDEV+1)
+			      /* max number of iopbs that can be active */
+#define XYC_MAXTIME   4*1000000 /* four seconds before we give up and reset */
+#define XYC_MAXTRIES  4       /* max number of times to retry an operation */
+#define XYC_INTERLEAVE 1      /* interleave (from disk label?) */
+#define XYFM_BPS	0x200 /* must be 512! */
+
+/*
+ * xyc device interface
+ * (lives in VME address space)   [note: bytes are swapped!]
+ */
+
+struct xyc {
+  volatile u_char xyc_reloc_hi;        /* iopb relocation (low byte) */
+  volatile u_char xyc_reloc_lo;        /* iopb relocation (high byte) */
+  volatile u_char xyc_addr_hi;         /* iopb address (low byte) */
+  volatile u_char xyc_addr_lo;         /* iopb address (high byte) */
+  volatile u_char xyc_rsetup;          /* reset/update reg */
+  volatile u_char xyc_csr;             /* control and status register */
+};
+
+/*
+ * xyc_csr
+ */
+
+#define XYC_GBSY     0x80     /* go/busy */
+#define XYC_ERR	     0x40     /* error */
+#define XYC_DERR     0x20     /* double error! */
+#define XYC_IPND     0x10     /* interrupt pending */
+#define XYC_ADRM     0x08     /* 24-bit addressing */
+#define XYC_AREQ     0x04     /* attention request */
+#define XYC_AACK     0x02     /* attention ack. */
+#define XYC_DRDY     0x01     /* drive ready */
+
+/*
+ * Input/Output Parameter Block (iopb)
+ *
+ * all controller commands are done via iopb's.   to start a command you
+ * must do this:
+ * [1] allocate space in DVMA space for the iopb
+ * [2] fill out all the fields of the iopb
+ * [3] if the controller isn't busy, start the iopb by loading the address
+ *     and reloc in the xyc's registers and setting the "go" bit [done]
+ * [4] controller busy: set AREQ bit, and wait for AACK bit.
+ *     add iopb to the chain, and clear AREQ to resume I/O
+ *
+ * when the controller is done with a command it may interrupt (if you
+ * ask it to) and it will set the XYC_IPND bit in the csr.   clear 
+ * the interrupt by writing one to this bit.
+ * 
+ * the format of the iopb is described in section 2.4 of the manual.
+ * note that it is byte-swapped on the sun.
+ */
+
+struct xy_iopb {
+				 /* section 2.4.2: byte 1 */
+  volatile u_char resv1:1;	 /* reserved */
+  volatile u_char iei:1;	 /* interrupt on each IOPB done */
+  volatile u_char ierr:1;	 /* interrupt on error (no effect on 450) */
+  volatile u_char hdp:1;	 /* hold dual port drive */
+  volatile u_char asr:1;	 /* autoseek retry */
+  volatile u_char eef:1;	 /* enable extended fn. (overlap seek) */
+  volatile u_char ecm:2;	 /* ECC correction mode */
+#define XY_ECM 2		 /* use mode 2 (see section 2.4.2) */
+                                 /* section 2.4.1: byte 0 */
+  volatile u_char aud:1;	 /* auto-update iopb */
+  volatile u_char relo:1;	 /* enable multibus relocation (>16bit addrs)*/
+  volatile u_char chen:1;        /* chain enable, "next iopb" is valid */
+  volatile u_char ien:1;	 /* interrupt enable */
+  volatile u_char com:4;	 /* command */
+#define XYCMD_NOP 0x0            /* no-op */
+#define XYCMD_WR  0x1            /* write */
+#define XYCMD_RD  0x2            /* read */
+#define XYCMD_WTH 0x3		 /* write track headers */
+#define XYCMD_RTH 0x4		 /* read track headers */
+#define XYCMD_SK  0x5            /* seek */
+#define XYCMD_RST 0x6            /* drive reset */
+#define XYCMD_WFM 0x7		 /* write format */
+#define XYCMD_RDH 0x8		 /* read header, data, and ECC */
+#define XYCMD_RDS 0x9		 /* read drive status */
+#define XYCMD_WRH 0xa		 /* write header, data, and ECC */
+#define XYCMD_SDS 0xb		 /* set drive size */
+#define XYCMD_ST  0xc		 /* self test */
+#define XYCMD_R   0xd		 /* reserved */
+#define XYCMD_MBL 0xe		 /* maint. buffer load */
+#define XYCMD_MBD 0xf		 /* main. buffer dump */
+                                 /* section 2.4.4: byte 3 */
+  volatile u_char errno;	 /* error or completion code */
+                                 /* section 2.4.3: byte 2 */
+  volatile u_char errs:1;        /* error summary bit */
+  volatile u_char resv2:2;	 /* reserved */
+  volatile u_char ctyp:3;	 /* controller type */
+#define XYCT_450 1		 /* the 450 controller */
+  volatile u_char resv3:1;	 /* reserved */
+  volatile u_char done:1;	 /* done! */
+                                 /* section 2.4.6: byte 5 */
+  volatile u_char dt:2;		 /* drive type */
+#define XYC_MAXDT 3		 /* largest drive type possible */
+  volatile u_char resv4:4;	 /* reserved */
+  volatile u_char unit:2;	 /* unit # */
+                                 /* section 2.4.5: byte 4 */
+  volatile u_char bw:1;		 /* byte(1)/word(0) xfer size */
+  volatile u_char intlv:4;	 /* interleave factor (0=1:1, 1=2:1, etc.) */
+  volatile u_char thro:3;	 /* dma throttle (0=2,1=4,2=8, etc...) */
+#define XY_THRO 4		 /* 4 == 32 dma cycles */
+                                 /* section 2.4.8: byte 7 */
+  volatile u_char sect;		 /* sector # */
+                                 /* section 2.4.7: byte 6 */
+  volatile u_char head;		 /* head # */
+                                 /* section 2.4.9: byte 8,9 */
+  volatile u_short cyl;		 /* cyl # */
+                                 /* section 2.4.10: byte a,b */
+  volatile u_short scnt;	 /* sector count, also drive status */
+#define xy_dr_status scnt
+#define XYS_ONCL 0x80		 /* on-cylinder (active LOW) */
+#define XYS_DRDY 0x40		 /* drive ready (active LOW) */
+#define XYS_WRPT 0x20		 /* write protect */
+#define XYS_DPB  0x10		 /* dual-port busy */
+#define XYS_SKER 0x08		 /* hard seek error */
+#define XYS_DFLT 0x04		 /* disk fault */
+                                 /* section 2.4.11: byte c,d */
+  volatile u_short dataa;	 /* data address */
+                                 /* section 2.4.12: byte e,f */
+  volatile u_short datar;	 /* data relocation pointer */
+				 /* section 2.4.14: byte 11 */
+  volatile u_char subfn;	 /* sub-function */
+				 /* section 2.4.13: byte 10 */
+  volatile u_char hoff;		 /* head offset for fixed/removeable drives */
+				 /* section 2.4.15: byte 12,13 */
+  volatile u_short nxtiopb;	 /* next iopb address (same relocation) */
+				 /* section 2.4.16: byte 14,15 */
+  volatile u_short eccpat;	 /* ecc pattern */
+				 /* section 2.4.17: byte 16,17 */
+  volatile u_short eccaddr;	 /* ecc address */
+};
+
+
+/*
+ * errors (section 2.4.4.1)
+ */
+
+/* software error codes */
+#define XY_ERR_FAIL 0xff         /* general total failure */
+#define XY_ERR_DERR 0xfe	 /* double error */
+/* no error */
+#define XY_ERR_AOK  0x00         /* success */
+
+#define XY_ERR_IPEN 0x01	 /* interrupt pending */
+#define XY_ERR_BCFL 0x03	 /* busy conflict */
+#define XY_ERR_TIMO 0x04	 /* operation timeout */
+#define XY_ERR_NHDR 0x05	 /* header not found */
+#define XY_ERR_HARD 0x06	 /* hard ECC error */
+#define XY_ERR_ICYL 0x07	 /* illegal cylinder address */
+#define XY_ERR_ISEC 0x0a	 /* illegal sector address */
+#define XY_ERR_SMAL 0x0d	 /* last sector too small */
+#define XY_ERR_SACK 0x0e	 /* slave ACK error (non-existent memory) */
+#define XY_ERR_CHER 0x12	 /* cylinder and head/header error */
+#define XY_ERR_SRTR 0x13	 /* auto-seek retry successful */
+#define XY_ERR_WPRO 0x14	 /* write-protect error */
+#define XY_ERR_UIMP 0x15	 /* unimplemented command */
+#define XY_ERR_DNRY 0x16	 /* drive not ready */
+#define XY_ERR_SZER 0x17	 /* sector count zero */
+#define XY_ERR_DFLT 0x18	 /* drive faulted */
+#define XY_ERR_ISSZ 0x19	 /* illegal sector size */
+#define XY_ERR_SLTA 0x1a	 /* self test a */
+#define XY_ERR_SLTB 0x1b	 /* self test b */
+#define XY_ERR_SLTC 0x1c	 /* self test c */
+#define XY_ERR_SOFT 0x1e	 /* soft ECC error */
+#define XY_ERR_SFOK 0x1f	 /* soft ECC error recovered */
+#define XY_ERR_IHED 0x20	 /* illegal head */
+#define XY_ERR_DSEQ 0x21	 /* disk sequencer error */
+#define XY_ERR_SEEK 0x25	 /* seek error */
+
+
+/* error actions */
+#define XY_ERA_PROG 0x10	 /* program error: quit */
+#define XY_ERA_SOFT 0x30         /* soft error: we recovered */
+#define XY_ERA_HARD 0x40         /* hard error: retry */
+#define XY_ERA_RSET 0x60         /* hard error: reset, then retry */
+#define XY_ERA_WPRO 0x90         /* write protected */
+
+