b6622a339e
Move the GET_FIELD and SET_FIELD macros to vas.h as VAS and other users of VAS, including NX-842 can use those macros. There is a lot of related code between the VAS/NX kernel drivers and skiboot. For consistency, switch the order of parameters in SET_FIELD to match the order in skiboot. Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Reviewed-by: Dan Streetman <ddstreet@ieee.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/*
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* Copyright 2016-17 IBM Corp.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _ASM_POWERPC_VAS_H
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#define _ASM_POWERPC_VAS_H
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/*
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* Min and max FIFO sizes are based on Version 1.05 Section 3.1.4.25
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* (Local FIFO Size Register) of the VAS workbook.
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*/
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#define VAS_RX_FIFO_SIZE_MIN (1 << 10) /* 1KB */
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#define VAS_RX_FIFO_SIZE_MAX (8 << 20) /* 8MB */
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/*
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* Threshold Control Mode: Have paste operation fail if the number of
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* requests in receive FIFO exceeds a threshold.
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*
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* NOTE: No special error code yet if paste is rejected because of these
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* limits. So users can't distinguish between this and other errors.
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*/
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#define VAS_THRESH_DISABLED 0
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#define VAS_THRESH_FIFO_GT_HALF_FULL 1
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#define VAS_THRESH_FIFO_GT_QTR_FULL 2
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#define VAS_THRESH_FIFO_GT_EIGHTH_FULL 3
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/*
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* Get/Set bit fields
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*/
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#define GET_FIELD(m, v) (((v) & (m)) >> MASK_LSH(m))
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#define MASK_LSH(m) (__builtin_ffsl(m) - 1)
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#define SET_FIELD(m, v, val) \
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(((v) & ~(m)) | ((((typeof(v))(val)) << MASK_LSH(m)) & (m)))
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/*
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* Co-processor Engine type.
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*/
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enum vas_cop_type {
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VAS_COP_TYPE_FAULT,
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VAS_COP_TYPE_842,
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VAS_COP_TYPE_842_HIPRI,
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VAS_COP_TYPE_GZIP,
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VAS_COP_TYPE_GZIP_HIPRI,
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VAS_COP_TYPE_FTW,
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VAS_COP_TYPE_MAX,
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};
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#endif /* __ASM_POWERPC_VAS_H */
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