| /* 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 */ |