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/*
* Copyright (C) 2019-2020 Collabora, Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __BI_QUIRKS_H
#define __BI_QUIRKS_H
/* Model-specific quirks requiring compiler workarounds/etc. Quirks
* may be errata requiring a workaround, or features. We're trying to be
* quirk-positive here; quirky is the best! */
/* Whether this GPU lacks support for the preload mechanism. New GPUs can have
* varyings and textures preloaded into the fragment shader to amortize the I/O
* cost; early Bifrost models lacked this feature. */
#define BIFROST_NO_PRELOAD (1 << 0)
/* Whether this GPU lacks support for the _FAST family of opcodes for fast
* computation of special functions requiring lookup tables. Early GPUs require
* rather unweildly lowering mechanisms for thesr things. */
#define BIFROST_NO_FAST_OP (1 << 1)
static inline unsigned
bifrost_get_quirks(unsigned product_id)
{
switch (product_id >> 12) {
case 6: /* 1st gen */
return BIFROST_NO_PRELOAD |
BIFROST_NO_FAST_OP;
case 7: /* 2nd gen */
case 8: /* 3rd gen */
return 0;
default:
unreachable("Unknown Bifrost GPU ID");
}
}
#endif
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