blz2060.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:2k
- /* blz2060.h: Defines and structures for the Blizzard 2060 SCSI driver.
- *
- * Copyright (C) 1996 Jesper Skov (jskov@cygnus.co.uk)
- *
- * This file is based on cyber_esp.h (hence the occasional reference to
- * CyberStorm).
- */
- #include "NCR53C9x.h"
- #ifndef BLZ2060_H
- #define BLZ2060_H
- /* The controller registers can be found in the Z2 config area at these
- * offsets:
- */
- #define BLZ2060_ESP_ADDR 0x1ff00
- #define BLZ2060_DMA_ADDR 0x1ffe0
- /* The Blizzard 2060 DMA interface
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- * Only two things can be programmed in the Blizzard DMA:
- * 1) The data direction is controlled by the status of bit 31 (1 = write)
- * 2) The source/dest address (word aligned, shifted one right) in bits 30-0
- *
- * Figure out interrupt status by reading the ESP status byte.
- */
- struct blz2060_dma_registers {
- volatile unsigned char dma_led_ctrl; /* DMA led control [0x000] */
- unsigned char dmapad1[0x0f];
- volatile unsigned char dma_addr0; /* DMA address (MSB) [0x010] */
- unsigned char dmapad2[0x03];
- volatile unsigned char dma_addr1; /* DMA address [0x014] */
- unsigned char dmapad3[0x03];
- volatile unsigned char dma_addr2; /* DMA address [0x018] */
- unsigned char dmapad4[0x03];
- volatile unsigned char dma_addr3; /* DMA address (LSB) [0x01c] */
- };
- #define BLZ2060_DMA_WRITE 0x80000000
- /* DMA control bits */
- #define BLZ2060_DMA_LED 0x02 /* HD led control 1 = off */
- extern int blz2060_esp_detect(struct SHT *);
- extern int blz2060_esp_release(struct Scsi_Host *);
- extern const char *esp_info(struct Scsi_Host *);
- extern int esp_queue(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
- extern int esp_command(Scsi_Cmnd *);
- extern int esp_abort(Scsi_Cmnd *);
- extern int esp_reset(Scsi_Cmnd *, unsigned int);
- extern int esp_proc_info(char *buffer, char **start, off_t offset, int length,
- int hostno, int inout);
- #define SCSI_BLZ2060 { proc_name: "esp-blz2060",
- proc_info: esp_proc_info,
- name: "Blizzard2060 SCSI",
- detect: blz2060_esp_detect,
- release: blz2060_esp_release,
- queuecommand: esp_queue,
- abort: esp_abort,
- reset: esp_reset,
- can_queue: 7,
- this_id: 7,
- sg_tablesize: SG_ALL,
- cmd_per_lun: 1,
- use_clustering: ENABLE_CLUSTERING }
- #endif /* BLZ2060_H */