| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | /* |
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| 3 | * Driver for Microtek Scanmaker X6 USB scanner and possibly others. |
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| 4 | * |
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| 5 | * (C) Copyright 2000 John Fremlin <vii@penguinpowered.com> |
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| 6 | * (C) Copyright 2000 Oliver Neukum <Oliver.Neukum@lrz.uni-muenchen.de> |
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| 7 | * |
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| 8 | * See microtek.c for history |
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| 9 | * |
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| 10 | */ |
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| 11 | |
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| 12 | typedef void (*mts_scsi_cmnd_callback)(struct scsi_cmnd *); |
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| 13 | |
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| 14 | |
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| 15 | struct mts_transfer_context |
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| 16 | { |
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| 17 | struct mts_desc *instance; |
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| 18 | mts_scsi_cmnd_callback final_callback; |
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| 19 | struct scsi_cmnd *srb; |
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| 20 | |
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| 21 | void *data; |
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| 22 | unsigned data_length; |
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| 23 | int data_pipe; |
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| 24 | struct scatterlist *curr_sg; |
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| 25 | |
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| 26 | u8 *scsi_status; /* status returned from ep_response after command completion */ |
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| 27 | }; |
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| 28 | |
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| 29 | |
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| 30 | struct mts_desc { |
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| 31 | struct mts_desc *next; |
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| 32 | struct mts_desc *prev; |
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| 33 | |
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| 34 | struct usb_device *usb_dev; |
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| 35 | struct usb_interface *usb_intf; |
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| 36 | |
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| 37 | /* Endpoint addresses */ |
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| 38 | u8 ep_out; |
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| 39 | u8 ep_response; |
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| 40 | u8 ep_image; |
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| 41 | |
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| 42 | struct Scsi_Host *host; |
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| 43 | |
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| 44 | struct urb *urb; |
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| 45 | struct mts_transfer_context context; |
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| 46 | }; |
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| 47 | |
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| 48 | |
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| 49 | #define MTS_EP_OUT 0x1 |
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| 50 | #define MTS_EP_RESPONSE 0x2 |
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| 51 | #define MTS_EP_IMAGE 0x3 |
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| 52 | #define MTS_EP_TOTAL 0x3 |
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| 53 | |
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| 54 | #define MTS_SCSI_ERR_MASK ~0x3fu |
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| 55 | |
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| 56 | |
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