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/*
* Copyright 2016-17 IBM Corp.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _ASM_POWERPC_VAS_H
#define _ASM_POWERPC_VAS_H
/*
* Min and max FIFO sizes are based on Version 1.05 Section 3.1.4.25
* (Local FIFO Size Register) of the VAS workbook.
*/
#define VAS_RX_FIFO_SIZE_MIN (1 << 10) /* 1KB */
#define VAS_RX_FIFO_SIZE_MAX (8 << 20) /* 8MB */
/*
* Threshold Control Mode: Have paste operation fail if the number of
* requests in receive FIFO exceeds a threshold.
*
* NOTE: No special error code yet if paste is rejected because of these
* limits. So users can't distinguish between this and other errors.
*/
#define VAS_THRESH_DISABLED 0
#define VAS_THRESH_FIFO_GT_HALF_FULL 1
#define VAS_THRESH_FIFO_GT_QTR_FULL 2
#define VAS_THRESH_FIFO_GT_EIGHTH_FULL 3
/*
* Get/Set bit fields
*/
#define GET_FIELD(m, v) (((v) & (m)) >> MASK_LSH(m))
#define MASK_LSH(m) (__builtin_ffsl(m) - 1)
#define SET_FIELD(m, v, val) \
(((v) & ~(m)) | ((((typeof(v))(val)) << MASK_LSH(m)) & (m)))
/*
* Co-processor Engine type.
*/
enum vas_cop_type {
VAS_COP_TYPE_FAULT,
VAS_COP_TYPE_842,
VAS_COP_TYPE_842_HIPRI,
VAS_COP_TYPE_GZIP,
VAS_COP_TYPE_GZIP_HIPRI,
VAS_COP_TYPE_FTW,
VAS_COP_TYPE_MAX,
};
#endif /* __ASM_POWERPC_VAS_H */
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