ide: add struct ide_taskfile (take 2)
[linux-2.6.git] / include / linux / ide.h
index 66a38f1..69b78bb 100644 (file)
@@ -103,8 +103,6 @@ typedef unsigned char       byte;   /* used everywhere */
 #define IDE_FEATURE_OFFSET     IDE_ERROR_OFFSET
 #define IDE_COMMAND_OFFSET     IDE_STATUS_OFFSET
 
-#define IDE_CONTROL_OFFSET_HOB (7)
-
 #define IDE_DATA_REG           (HWIF(drive)->io_ports[IDE_DATA_OFFSET])
 #define IDE_ERROR_REG          (HWIF(drive)->io_ports[IDE_ERROR_OFFSET])
 #define IDE_NSECTOR_REG                (HWIF(drive)->io_ports[IDE_NSECTOR_OFFSET])
@@ -1062,15 +1060,40 @@ extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
  */
 extern int ide_wait_cmd(ide_drive_t *, u8, u8, u8, u8, u8 *);
 
+struct ide_taskfile {
+       u8      hob_data;       /*  0: high data byte (for TASKFILE IOCTL) */
+
+       u8      hob_feature;    /*  1-5: additional data to support LBA48 */
+       u8      hob_nsect;
+       u8      hob_lbal;
+       u8      hob_lbam;
+       u8      hob_lbah;
+
+       u8      data;           /*  6: low data byte (for TASKFILE IOCTL) */
+
+       union {                 /*  7: */
+               u8 error;       /*   read:  error */
+               u8 feature;     /*  write: feature */
+       };
+
+       u8      nsect;          /*  8: number of sectors */
+       u8      lbal;           /*  9: LBA low */
+       u8      lbam;           /* 10: LBA mid */
+       u8      lbah;           /* 11: LBA high */
+
+       u8      device;         /* 12: device select */
+
+       union {                 /* 13: */
+               u8 status;      /*  read: status  */
+               u8 command;     /* write: command */
+       };
+};
+
 typedef struct ide_task_s {
-/*
- *     struct hd_drive_task_hdr        tf;
- *     task_struct_t           tf;
- *     struct hd_drive_hob_hdr         hobf;
- *     hob_struct_t            hobf;
- */
-       u8                      tfRegister[8];
-       u8                      hobRegister[8];
+       union {
+               struct ide_taskfile     tf;
+               u8                      tf_array[14];
+       };
        ide_reg_valid_t         tf_out_flags;
        ide_reg_valid_t         tf_in_flags;
        int                     data_phase;