1 /* cyberstorm.h: Defines and structures for the CyberStorm SCSI driver.
2 *
3 * Copyright (C) 1996 Jesper Skov (jskov@cygnus.co.uk)
4 */
5
6 #include "NCR53C9x.h"
7
8 #ifndef CYBER_ESP_H
9 #define CYBER_ESP_H
10
11 /* The controller registers can be found in the Z2 config area at these
12 * offsets:
13 */
14 #define CYBER_ESP_ADDR 0xf400
15 #define CYBER_DMA_ADDR 0xf800
16
17
18 /* The CyberStorm DMA interface */
19 struct cyber_dma_registers {
20 volatile unsigned char dma_addr0; /* DMA address (MSB) [0x000] */
21 unsigned char dmapad1[1];
22 volatile unsigned char dma_addr1; /* DMA address [0x002] */
23 unsigned char dmapad2[1];
24 volatile unsigned char dma_addr2; /* DMA address [0x004] */
25 unsigned char dmapad3[1];
26 volatile unsigned char dma_addr3; /* DMA address (LSB) [0x006] */
27 unsigned char dmapad4[0x3fb];
28 volatile unsigned char cond_reg; /* DMA cond (ro) [0x402] */
29 #define ctrl_reg cond_reg /* DMA control (wo) [0x402] */
30 };
31
32 /* DMA control bits */
33 #define CYBER_DMA_LED 0x80 /* HD led control 1 = on */
34 #define CYBER_DMA_WRITE 0x40 /* DMA direction. 1 = write */
35 #define CYBER_DMA_Z3 0x20 /* 16 (Z2) or 32 (CHIP/Z3) bit DMA transfer */
36
37 /* DMA status bits */
38 #define CYBER_DMA_HNDL_INTR 0x80 /* DMA IRQ pending? */
39
40 /* The bits below appears to be Phase5 Debug bits only; they were not
41 * described by Phase5 so using them may seem a bit stupid...
42 */
43 #define CYBER_HOST_ID 0x02 /* If set, host ID should be 7, otherwise
44 * it should be 6.
45 */
46 #define CYBER_SLOW_CABLE 0x08 /* If *not* set, assume SLOW_CABLE */
47
48 extern int cyber_esp_detect(struct SHT *);
49 extern int cyber_esp_release(struct Scsi_Host *);
50 extern const char *esp_info(struct Scsi_Host *);
51 extern int esp_queue(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
52 extern int esp_command(Scsi_Cmnd *);
53 extern int esp_abort(Scsi_Cmnd *);
54 extern int esp_reset(Scsi_Cmnd *, unsigned int);
55 extern int esp_proc_info(char *buffer, char **start, off_t offset, int length,
56 int hostno, int inout);
57
58
59 #define SCSI_CYBERSTORM { proc_name: "esp-cyberstorm", \
60 proc_info: esp_proc_info, \
61 name: "CyberStorm SCSI", \
62 detect: cyber_esp_detect, \
63 release: cyber_esp_release, \
64 queuecommand: esp_queue, \
65 abort: esp_abort, \
66 reset: esp_reset, \
67 can_queue: 7, \
68 this_id: 7, \
69 sg_tablesize: SG_ALL, \
70 cmd_per_lun: 1, \
71 use_clustering: ENABLE_CLUSTERING }
72
73 #endif /* CYBER_ESP_H */
74
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