drivers/scsi/fastlane.h

   1 /* fastlane.h: Defines and structures for the Fastlane SCSI driver.
   2  *
   3  * Copyright (C) 1996 Jesper Skov (jskov@cygnus.co.uk)
   4  */
   5
   6 #include "NCR53C9x.h"
   7
   8 #ifndef FASTLANE_H
   9 #define FASTLANE_H
  10
  11 /* The controller registers can be found in the Z2 config area at these
  12  * offsets:
  13  */
  14 #define FASTLANE_ESP_ADDR 0x1000001
  15 #define FASTLANE_DMA_ADDR 0x1000041
  16
  17
  18 /* The Fastlane DMA interface */
  19 struct fastlane_dma_registers {
  20         volatile unsigned char cond_reg;        /* DMA status  (ro) [0x0000] */
  21 #define ctrl_reg  cond_reg                      /* DMA control (wo) [0x0000] */
  22         unsigned char dmapad1[0x3f];
  23         volatile unsigned char clear_strobe;    /* DMA clear   (wo) [0x0040] */
  24 };
  25
  26
  27 /* DMA status bits */
  28 #define FASTLANE_DMA_MINT  0x80
  29 #define FASTLANE_DMA_IACT  0x40
  30 #define FASTLANE_DMA_CREQ  0x20
  31
  32 /* DMA control bits */
  33 #define FASTLANE_DMA_FCODE 0xa0
  34 #define FASTLANE_DMA_MASK  0xf3
  35 #define FASTLANE_DMA_LED   0x10 /* HD led control 1 = on */
  36 #define FASTLANE_DMA_WRITE 0x08 /* 1 = write */
  37 #define FASTLANE_DMA_ENABLE 0x04 /* Enable DMA */
  38 #define FASTLANE_DMA_EDI   0x02 /* Enable DMA IRQ ? */
  39 #define FASTLANE_DMA_ESI   0x01 /* Enable SCSI IRQ */
  40
  41 extern int fastlane_esp_detect(struct SHT *);
  42 extern int fastlane_esp_release(struct Scsi_Host *);
  43 extern const char *esp_info(struct Scsi_Host *);
  44 extern int esp_queue(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
  45 extern int esp_command(Scsi_Cmnd *);
  46 extern int esp_abort(Scsi_Cmnd *);
  47 extern int esp_reset(Scsi_Cmnd *, unsigned int);
  48 extern int esp_proc_info(char *buffer, char **start, off_t offset, int length,
  49                          int hostno, int inout);
  50
  51 #define SCSI_FASTLANE     { proc_dir:           &proc_scsi_esp, \
  52                             proc_info:          esp_proc_info, \
  53                             name:               "Fastlane SCSI", \
  54                             detect:             fastlane_esp_detect, \
  55                             release:            fastlane_esp_release, \
  56                             queuecommand:       esp_queue, \
  57                             abort:              esp_abort, \
  58                             reset:              esp_reset, \
  59                             can_queue:          7, \
  60                             this_id:            7, \
  61                             sg_tablesize:       SG_ALL, \
  62                             cmd_per_lun:        1, \
  63                             use_clustering:     ENABLE_CLUSTERING }
  64
  65 #endif /* FASTLANE_H */