Initial source

1 files changed, 120 insertions, 0 deletions

diff --git a/i386/i386at/nhdreg.h b/i386/i386at/nhdreg.h
new file mode 100644
index 0000000..d0ef197
--- /dev/null
+++ b/i386/i386at/nhdreg.h
@@ -0,0 +1,120 @@
+/* 
+ * Copyright (c) 1994 Shantanu Goel
+ * All Rights Reserved.
+ * 
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ * 
+ * THE AUTHOR ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  THE AUTHOR DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ */
+
+/*
+ * Hard disk controller.
+ */
+
+#define HD_DATA(p)	(p)		/* data register */
+#define HD_ERROR(p)	((p) + 1)	/* error register */
+#define HD_PRECOMP(p)	((p) + 1)	/* precomp register */
+#define HD_SECTCNT(p)	((p) + 2)	/* sector count register */
+#define HD_SECT(p)	((p) + 3)	/* sector number register */
+#define HD_CYLLO(p)	((p) + 4)	/* cylinder number low */
+#define HD_CYLHI(p)	((p) + 5)	/* cylinder number high */
+#define HD_DRVHD(p)	((p) + 6)	/* drive head register */
+#define HD_STATUS(p)	((p) + 7)	/* status register */
+#define HD_CMD(p)	((p) + 7)	/* command register */
+
+/*
+ * Status register
+ */
+#define ST_BUSY		0x80		/* controller is busy */
+#define ST_READY	0x40		/* drive is ready */
+#define ST_WRTFLT	0x20		/* write fault */
+#define ST_SEEK		0x10		/* seek complete */
+#define ST_DREQ		0x08		/* data request */
+#define ST_ECC		0x04		/* ECC corrected data */
+#define ST_INDEX	0x02		/* index pulse */
+#define ST_ERROR	0x01		/* an operation resulted in error */
+
+/*
+ * Error register
+ */
+#define ERR_DAM		0x01		/* data address mark not found */
+#define ERR_TR0		0x02		/* track 0 not found */
+#define ERR_ABORT	0x04		/* command aborted */
+#define ERR_ID		0x10		/* sector not found */
+#define ERR_ECC		0x40		/* uncorrectable ECC error */
+#define ERR_BADBLK	0x80		/* bad block detected */
+
+/*
+ * Commands
+ */
+#define CMD_RESTORE	0x10
+#define CMD_READ	0x20
+#define CMD_WRITE	0x30
+#define CMD_SETPARAM	0x91
+#define CMD_READMULTI	0xc4
+#define CMD_WRITEMULTI	0xc5
+#define CMD_SETMULTI	0xc6
+#define CMD_IDENTIFY	0xec
+
+#if 0
+#define PDLOCATION	29	/* XXX: belongs in <i386at/disk.h> */
+#endif
+
+#define BAD_BLK		0x80
+#define SECSIZE		512
+
+/*
+ * Information returned by IDENTIFY command.
+ */
+struct hdident {
+	u_short	id_config;	/* flags */
+	u_short	id_npcyl;	/* # physical cylinders */
+	u_short	id_rsvd2;	/* reserved (word 2) */
+	u_short	id_nptrk;	/* # physical tracks */
+	u_short	id_bptrk;	/* unformatted bytes/track */
+	u_short	id_bpsect;	/* unformatted bytes/sector */
+	u_short	id_npsect;	/* # physical sectors/track */
+	u_short	id_vendor0;	/* vendor unique */
+	u_short	id_vendor1;	/* vendor unique */
+	u_short	id_vendor2;	/* vendor unique */
+	u_char	id_serno[20];	/* serial #: 0 = unspecified */
+	u_short	id_buftype;	/* ??? */
+	u_short	id_bufsize;	/* 512 byte increments: 0 = unspecified */
+	u_short	id_eccbytes;	/* for R/W LONG commands: 0 = unspecified */
+	u_char	id_rev[8];	/* firmware revision: 0 = unspecified */
+	u_char	id_model[40];	/* model name: 0 = unspecified */
+	u_char	id_multisize;	/* max multiple I/O size: 0 = unsupported */
+	u_char	id_vendor3;	/* vendor unique */
+	u_short	id_dwordio;	/* 0 = unsupported; 1 = implemented */
+	u_char	id_vendor4;	/* vendor unique */
+	u_char	id_capability;	/* 0:DMA 1:LBA 2:IORDYsw 3:IORDY:sup */
+	u_short	id_rsvd50;	/* reserved (word 50) */
+	u_char	id_vendor5;	/* vendor unique */
+	u_char	id_pio;		/* 0=slow, 1=medium, 2=fast */
+	u_char	id_vendor6;	/* vendor unique */
+	u_char	id_dma;		/* 0=slow, 1=medium, 2=fast */
+	u_short	id_valid;	/* 0:logical 1:eide */
+	u_short	id_nlcyl;	/* # logical cylinders */
+	u_short	id_nltrk;	/* # logical tracks */
+	u_short	id_nlsect;	/* # logical sectors/track */
+	u_short	id_capacity0;	/* logical total sectors on drive */
+	u_short	id_capacity1;	/*  (2 words, misaligned int) */
+	u_char	id_multisect;	/* current multiple sector count */
+	u_char	id_multivalid;	/* bit 0=1, multisect field is valid */
+	u_short	id_totsect;	/* total number of sectors */
+	u_short	id_dma1;	/* single word DMA info */
+	u_short	id_dmamulti;	/* multiple word DMA info */
+	u_short	id_eidepiomode;	/* 0:mode3 1:mode4 */
+	u_short	id_eidedmamin;	/* min multiple word DMA cycle time (ns) */
+	u_short	id_eidedmatime;	/* recomended DMA cycle time (ns) */
+	u_short	id_eidepio;	/* min cycle time (ns), no IORDY */
+	u_short	id_eidepioiordy;/* min cycle time (ns, with IORDY */
+	u_short	id_rsvd69;	/* reserved (word 69) */
+	u_short	id_rsvd70;	/* reserved (word 70) */
+};