Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 135 insertions, 0 deletions

diff --git a/drivers/block/xd.h b/drivers/block/xd.h
new file mode 100644
index 000000000000..71ac2e3dffc8
--- /dev/null
+++ b/drivers/block/xd.h
@@ -0,0 +1,135 @@
+#ifndef _LINUX_XD_H
+#define _LINUX_XD_H
+
+/*
+ * This file contains the definitions for the IO ports and errors etc. for XT hard disk controllers (at least the DTC 5150X).
+ *
+ * Author: Pat Mackinlay, pat@it.com.au
+ * Date: 29/09/92
+ *
+ * Revised: 01/01/93, ...
+ *
+ * Ref: DTC 5150X Controller Specification (thanks to Kevin Fowler, kevinf@agora.rain.com)
+ * Also thanks to: Salvador Abreu, Dave Thaler, Risto Kankkunen and Wim Van Dorst.
+ */
+
+#include <linux/interrupt.h>
+
+/* XT hard disk controller registers */
+#define XD_DATA         (xd_iobase + 0x00)      /* data RW register */
+#define XD_RESET        (xd_iobase + 0x01)      /* reset WO register */
+#define XD_STATUS       (xd_iobase + 0x01)      /* status RO register */
+#define XD_SELECT       (xd_iobase + 0x02)      /* select WO register */
+#define XD_JUMPER       (xd_iobase + 0x02)      /* jumper RO register */
+#define XD_CONTROL      (xd_iobase + 0x03)      /* DMAE/INTE WO register */
+#define XD_RESERVED     (xd_iobase + 0x03)      /* reserved */
+
+/* XT hard disk controller commands (incomplete list) */
+#define CMD_TESTREADY   0x00    /* test drive ready */
+#define CMD_RECALIBRATE 0x01    /* recalibrate drive */
+#define CMD_SENSE       0x03    /* request sense */
+#define CMD_FORMATDRV   0x04    /* format drive */
+#define CMD_VERIFY      0x05    /* read verify */
+#define CMD_FORMATTRK   0x06    /* format track */
+#define CMD_FORMATBAD   0x07    /* format bad track */
+#define CMD_READ        0x08    /* read */
+#define CMD_WRITE       0x0A    /* write */
+#define CMD_SEEK        0x0B    /* seek */
+
+/* Controller specific commands */
+#define CMD_DTCSETPARAM 0x0C    /* set drive parameters (DTC 5150X & CX only?) */
+#define CMD_DTCGETECC   0x0D    /* get ecc error length (DTC 5150X only?) */
+#define CMD_DTCREADBUF  0x0E    /* read sector buffer (DTC 5150X only?) */
+#define CMD_DTCWRITEBUF 0x0F    /* write sector buffer (DTC 5150X only?) */
+#define CMD_DTCREMAPTRK 0x11    /* assign alternate track (DTC 5150X only?) */
+#define CMD_DTCGETPARAM 0xFB    /* get drive parameters (DTC 5150X only?) */
+#define CMD_DTCSETSTEP  0xFC    /* set step rate (DTC 5150X only?) */
+#define CMD_DTCSETGEOM  0xFE    /* set geometry data (DTC 5150X only?) */
+#define CMD_DTCGETGEOM  0xFF    /* get geometry data (DTC 5150X only?) */
+#define CMD_ST11GETGEOM 0xF8    /* get geometry data (Seagate ST11R/M only?) */
+#define CMD_WDSETPARAM  0x0C    /* set drive parameters (WD 1004A27X only?) */
+#define CMD_XBSETPARAM  0x0C    /* set drive parameters (XEBEC only?) */
+
+/* Bits for command status byte */
+#define CSB_ERROR       0x02    /* error */
+#define CSB_LUN         0x20    /* logical Unit Number */
+
+/* XT hard disk controller status bits */
+#define STAT_READY      0x01    /* controller is ready */
+#define STAT_INPUT      0x02    /* data flowing from controller to host */
+#define STAT_COMMAND    0x04    /* controller in command phase */
+#define STAT_SELECT     0x08    /* controller is selected */
+#define STAT_REQUEST    0x10    /* controller requesting data */
+#define STAT_INTERRUPT  0x20    /* controller requesting interrupt */
+
+/* XT hard disk controller control bits */
+#define PIO_MODE        0x00    /* control bits to set for PIO */
+#define DMA_MODE        0x03    /* control bits to set for DMA & interrupt */
+
+#define XD_MAXDRIVES    2       /* maximum 2 drives */
+#define XD_TIMEOUT      HZ      /* 1 second timeout */
+#define XD_RETRIES      4       /* maximum 4 retries */
+
+#undef DEBUG                    /* define for debugging output */
+
+#ifdef DEBUG
+        #define DEBUG_STARTUP   /* debug driver initialisation */
+        #define DEBUG_OVERRIDE  /* debug override geometry detection */
+        #define DEBUG_READWRITE /* debug each read/write command */
+        #define DEBUG_OTHER     /* debug misc. interrupt/DMA stuff */
+        #define DEBUG_COMMAND   /* debug each controller command */
+#endif /* DEBUG */
+
+/* this structure defines the XT drives and their types */
+typedef struct {
+        u_char heads;
+        u_short cylinders;
+        u_char sectors;
+        u_char control;
+        int unit;
+} XD_INFO;
+
+/* this structure defines a ROM BIOS signature */
+typedef struct {
+        unsigned int offset;
+        const char *string;
+        void (*init_controller)(unsigned int address);
+        void (*init_drive)(u_char drive);
+        const char *name;
+} XD_SIGNATURE;
+
+#ifndef MODULE
+static int xd_manual_geo_init (char *command);
+#endif /* MODULE */
+static u_char xd_detect (u_char *controller, unsigned int *address);
+static u_char xd_initdrives (void (*init_drive)(u_char drive));
+
+static void do_xd_request (request_queue_t * q);
+static int xd_ioctl (struct inode *inode,struct file *file,unsigned int cmd,unsigned long arg);
+static int xd_readwrite (u_char operation,XD_INFO *disk,char *buffer,u_int block,u_int count);
+static void xd_recalibrate (u_char drive);
+
+static irqreturn_t xd_interrupt_handler(int irq, void *dev_id,
+                                        struct pt_regs *regs);
+static u_char xd_setup_dma (u_char opcode,u_char *buffer,u_int count);
+static u_char *xd_build (u_char *cmdblk,u_char command,u_char drive,u_char head,u_short cylinder,u_char sector,u_char count,u_char control);
+static void xd_watchdog (unsigned long unused);
+static inline u_char xd_waitport (u_short port,u_char flags,u_char mask,u_long timeout);
+static u_int xd_command (u_char *command,u_char mode,u_char *indata,u_char *outdata,u_char *sense,u_long timeout);
+
+/* card specific setup and geometry gathering code */
+static void xd_dtc_init_controller (unsigned int address);
+static void xd_dtc5150cx_init_drive (u_char drive);
+static void xd_dtc_init_drive (u_char drive);
+static void xd_wd_init_controller (unsigned int address);
+static void xd_wd_init_drive (u_char drive);
+static void xd_seagate_init_controller (unsigned int address);
+static void xd_seagate_init_drive (u_char drive);
+static void xd_omti_init_controller (unsigned int address);
+static void xd_omti_init_drive (u_char drive);
+static void xd_xebec_init_controller (unsigned int address);
+static void xd_xebec_init_drive (u_char drive);
+static void xd_setparam (u_char command,u_char drive,u_char heads,u_short cylinders,u_short rwrite,u_short wprecomp,u_char ecc);
+static void xd_override_init_drive (u_char drive);
+
+#endif /* _LINUX_XD_H */