From: Alan Cox <alan@linux.intel.com>
Date: Fri, 19 Oct 2018 18:46:22 +0000 (+0100)
Subject: fdc: add a first attempt at a proper floppy API
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=e426d50afa963dc3e5d96d72dedf5b64a5d3e969;p=FUZIX.git

fdc: add a first attempt at a proper floppy API
---

diff --git a/Kernel/include/fdc.h b/Kernel/include/fdc.h
new file mode 100644
index 00000000..cfb9c3aa
--- /dev/null
+++ b/Kernel/include/fdc.h
@@ -0,0 +1,60 @@
+#ifndef __FDC_DOT_H__
+#define __FDC_DOT_H__
+
+/* For INFO reports the current media, for CAP reports the limits */
+struct fdcinfo {
+        uint16_t features;
+#define FDF_SD          1               /* Can do single density (FM) */
+#define FDF_DD          2               /* Can do double density (MFM) */
+#define FDF_HD          4               /* Can do high density */
+#define FDF_ED          8               /* Can do extra-high density */
+
+#define FDF_DS          16
+#define FDF_8INCH       32              /* Can do 8" (double bit rate) */
+
+#define FDF_SEC128      128
+#define FDF_SEC256      256
+#define FDF_SEC512      512
+#define FDF_SEC1024     1024
+#define FDF_SEC2048     2048
+
+#define FDF_SECSIZE	(FDF_SEC128|FDF_SEC256|FDF_SEC512|FDF_SEC1024|FDF_SEC2048)
+
+
+#define FDF_MEDIACH     8192            /* Has media change event */
+#define FDF_EJECT       16384           /* Has an eject mechanism */
+#define FDF_HARD        32768           /* Hard sectored */
+
+        /* Drive data: see HDIO_GETGEO for current */
+        uint8_t sectors;                /* Per track */
+        uint8_t tracks;
+        uint8_t heads;
+        uint8_t steprate;
+        uint8_t precomp;
+        uint8_t spare;
+
+        uint8_t config;
+#define FDC_DSTEP       1               /* Double step */
+#define FDC_AUTO        2               /* Media autodetect */
+#define FDC_SEC0        4               /* Start at sector 0 */
+#define FDC_PRECOMP	8		/* Can control precomp on/off */
+ 
+        uint8_t fmttype;                /* Type of format buffer needed */
+#define FDC_FMT_AUTO		0	/* No buffer needed */
+#define FDC_FMT_17XX            1
+#define FDC_FMT_765             2
+#define FDC_FMT_8271		3
+        uint16_t fmtbuf;                /* Size of required format buffer */
+
+        uint16_t spare1;
+        uint16_t spare2;		/* to 16 bytes */
+};
+
+#define FDIO_GETCAP	0x01F0
+#define FDIO_GETINFO	0x01F1
+#define FDIO_SETINFO	0x41F2
+#define	FDIO_FMTTRK	0x01F3
+#define FDIO_RESTORE	0x01F4 
+#define FDIO_SETSKEW	0x41F5
+
+#endif