| /* Header file for the hpusbscsi driver */ |
| /* (C) Copyright 2001 Oliver Neukum */ |
| /* sponsored by the Linux Usb Project */ |
| /* large parts based on or taken from code by John Fremlin and Matt Dharm */ |
| /* this file is licensed under the GPL */ |
| |
| /* A big thanks to Jose for untiring testing */ |
| |
| typedef void (*scsi_callback)(Scsi_Cmnd *); |
| |
| #define SENSE_COMMAND_SIZE 6 |
| #define HPUSBSCSI_SENSE_LENGTH 0x16 |
| |
| struct hpusbscsi |
| { |
| struct usb_device *dev; /* NULL indicates unplugged device */ |
| int ep_out; |
| int ep_in; |
| int ep_int; |
| int interrupt_interval; |
| int number; |
| int fragment; |
| struct Scsi_Host *host; |
| |
| scsi_callback scallback; |
| Scsi_Cmnd *srb; |
| |
| |
| wait_queue_head_t pending; |
| wait_queue_head_t deathrow; |
| |
| struct urb *dataurb; |
| struct urb *controlurb; |
| |
| |
| int state; |
| int current_data_pipe; |
| u8 sense_command[SENSE_COMMAND_SIZE]; |
| u8 scsi_state_byte; |
| }; |
| |
| #define SCSI_ERR_MASK ~0x3fu |
| |
| static const unsigned char scsi_command_direction[256/8] = { |
| 0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77, |
| 0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 |
| }; |
| |
| #define DIRECTION_IS_IN(x) ((scsi_command_direction[x>>3] >> (x & 7)) & 1) |
| |
| static void simple_command_callback(struct urb *u, struct pt_regs *regs); |
| static void scatter_gather_callback(struct urb *u, struct pt_regs *regs); |
| static void simple_payload_callback (struct urb *u, struct pt_regs *regs); |
| static void request_sense_callback (struct urb *u, struct pt_regs *regs); |
| static void control_interrupt_callback (struct urb *u, struct pt_regs *regs); |
| static void simple_done (struct urb *u, struct pt_regs *regs); |
| static int hpusbscsi_scsi_queuecommand (Scsi_Cmnd *srb, scsi_callback callback); |
| static int hpusbscsi_scsi_host_reset (Scsi_Cmnd *srb); |
| static int hpusbscsi_scsi_abort (Scsi_Cmnd *srb); |
| static void issue_request_sense (struct hpusbscsi *hpusbscsi); |
| |
| /* defines for internal driver state */ |
| #define HP_STATE_FREE 0 /*ready for next request */ |
| #define HP_STATE_BEGINNING 1 /*command being transferred */ |
| #define HP_STATE_WORKING 2 /* data transfer stage */ |
| #define HP_STATE_ERROR 3 /* error has been reported */ |
| #define HP_STATE_WAIT 4 /* waiting for status transfer */ |
| #define HP_STATE_PREMATURE 5 /* status prematurely reported */ |
| |
| |
| |