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/* cyberstorm.h: Defines and structures for the CyberStorm SCSI driver.
*
* Copyright (C) 1996 Jesper Skov (jskov@cygnus.co.uk)
*/
#include "NCR53C9x.h"
#ifndef CYBER_ESP_H
#define CYBER_ESP_H
/* The controller registers can be found in the Z2 config area at these
* offsets:
*/
#define CYBER_ESP_ADDR 0xf400
#define CYBER_DMA_ADDR 0xf800
/* The CyberStorm DMA interface */
struct cyber_dma_registers {
volatile unsigned char dma_addr0; /* DMA address (MSB) [0x000] */
unsigned char dmapad1[1];
volatile unsigned char dma_addr1; /* DMA address [0x002] */
unsigned char dmapad2[1];
volatile unsigned char dma_addr2; /* DMA address [0x004] */
unsigned char dmapad3[1];
volatile unsigned char dma_addr3; /* DMA address (LSB) [0x006] */
unsigned char dmapad4[0x3fb];
volatile unsigned char cond_reg; /* DMA cond (ro) [0x402] */
#define ctrl_reg cond_reg /* DMA control (wo) [0x402] */
};
/* DMA control bits */
#define CYBER_DMA_LED 0x80 /* HD led control 1 = on */
#define CYBER_DMA_WRITE 0x40 /* DMA direction. 1 = write */
#define CYBER_DMA_Z3 0x20 /* 16 (Z2) or 32 (CHIP/Z3) bit DMA transfer */
/* DMA status bits */
#define CYBER_DMA_HNDL_INTR 0x80 /* DMA IRQ pending? */
/* The bits below appears to be Phase5 Debug bits only; they were not
* described by Phase5 so using them may seem a bit stupid...
*/
#define CYBER_HOST_ID 0x02 /* If set, host ID should be 7, otherwise
* it should be 6.
*/
#define CYBER_SLOW_CABLE 0x08 /* If *not* set, assume SLOW_CABLE */
extern int cyber_esp_detect(struct SHT *);
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_CYBERSTORM { proc_dir: &proc_scsi_esp, \
name: "CyberStorm SCSI", \
detect: cyber_esp_detect, \
release: NULL, \
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: DISABLE_CLUSTERING }
#endif /* CYBER_ESP_H */
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