BSD 4_1_snap development

Work on file sys/h/tmreg.h

Synthesized-from: CSRG/cd1/4.1.snap

diff --git a/sys/h/tmreg.h b/sys/h/tmreg.h
new file mode 100644 (file)
index 0000000..7baa8c6
--- /dev/null
+++ b/sys/h/tmreg.h
@@ -0,0 +1,63 @@
+/*     tmreg.h 4.6     81/11/11        */
+
+/*
+ * TM11 controller registers
+ */
+struct tmdevice {
+       u_short tmer;           /* error register, per drive */
+       u_short tmcs;           /* control-status register */
+       short   tmbc;           /* byte/frame count */
+       u_short tmba;           /* address */
+       short   tmdb;           /* data buffer */
+       short   tmrd;           /* read lines */
+       short   tmmr;           /* maintenance register */
+};
+
+#define        b_repcnt  b_bcount
+#define        b_command b_resid
+
+/* bits in tmcs */
+#define        TM_GO           0000001
+#define        TM_OFFL         0000000         /* offline */
+#define        TM_RCOM         0000002         /* read */
+#define        TM_WCOM         0000004         /* write */
+#define        TM_WEOF         0000006         /* write-eof */
+#define        TM_SFORW        0000010         /* space forward */
+#define        TM_SREV         0000012         /* space backwards */
+#define        TM_WIRG         0000014         /* write with xtra interrecord gap */
+#define        TM_REW          0000016         /* rewind */
+#define        TM_SENSE        TM_IE           /* sense (internal to driver) */
+
+#define        tmreverseop(cmd)                ((cmd)==TM_SREV || (cmd)==TM_REW)
+
+/* TM_SNS is a pseudo-op used to get tape status */
+#define        TM_IE           0000100         /* interrupt enable */
+#define        TM_CUR          0000200         /* control unit is ready */
+#define        TM_DCLR         0010000         /* drive clear */
+#define        TM_D800         0060000         /* select 800 bpi density */
+#define        TM_ERR          0100000         /* drive error summary */
+
+/* bits in tmer */
+#define        TMER_ILC        0100000         /* illegal command */
+#define        TMER_EOF        0040000         /* end of file */
+#define        TMER_CRE        0020000         /* cyclic redundancy error */
+#define        TMER_PAE        0010000         /* parity error */
+#define        TMER_BGL        0004000         /* bus grant late */
+#define        TMER_EOT        0002000         /* at end of tape */
+#define        TMER_RLE        0001000         /* record length error */
+#define        TMER_BTE        0000400         /* bad tape error */
+#define        TMER_NXM        0000200         /* non-existant memory */
+#define        TMER_SELR       0000100         /* tape unit properly selected */
+#define        TMER_BOT        0000040         /* at beginning of tape */
+#define        TMER_CH7        0000020         /* 7 channel tape */
+#define        TMER_SDWN       0000010         /* gap settling down */
+#define        TMER_WRL        0000004         /* tape unit write protected */
+#define        TMER_RWS        0000002         /* tape unit rewinding */
+#define        TMER_TUR        0000001         /* tape unit ready */
+
+#define        TMER_BITS       \
+"\10\20ILC\17EOF\16CRE\15PAE\14BGL\13EOT\12RLE\11BTE\10NXM\
+\7SELR\6BOT\5CH7\4SDWN\3WRL\2RWS\1TUR"
+
+#define        TMER_HARD       (TMER_ILC|TMER_EOT)
+#define        TMER_SOFT       (TMER_CRE|TMER_PAE|TMER_BGL|TMER_RLE|TMER_BTE|TMER_NXM)