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      1 /*
      2  * Copyright  2015 Intel Corporation
      3  *
      4  * Permission is hereby granted, free of charge, to any person obtaining a
      5  * copy of this software and associated documentation files (the "Software"),
      6  * to deal in the Software without restriction, including without limitation
      7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      8  * and/or sell copies of the Software, and to permit persons to whom the
      9  * Software is furnished to do so, subject to the following conditions:
     10  *
     11  * The above copyright notice and this permission notice (including the next
     12  * paragraph) shall be included in all copies or substantial portions of the
     13  * Software.
     14  *
     15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
     21  * IN THE SOFTWARE.
     22  */
     23 
     24 #ifndef GEN_MACROS_H
     25 #define GEN_MACROS_H
     26 
     27 /* Macros for handling per-gen compilation.
     28  *
     29  * The prefixing macros GENX() and genX() automatically prefix whatever you
     30  * give them by GENX_ or genX_  where X is the gen number.
     31  *
     32  * You can do pseudo-runtime checks in your function such as
     33  *
     34  * if (GEN_GEN > 8 || GEN_IS_HASWELL) {
     35  *    // Do something
     36  * }
     37  *
     38  * The contents of the if statement must be valid regardless of gen, but
     39  * the if will get compiled away on everything except haswell.
     40  *
     41  * For places where you really do have a compile-time conflict, you can
     42  * use preprocessor logic:
     43  *
     44  * #if (GEN_GEN > 8 || GEN_IS_HASWELL)
     45  *    // Do something
     46  * #endif
     47  *
     48  * However, it is strongly recommended that the former be used whenever
     49  * possible.
     50  */
     51 
     52 /* Base macro defined on the command line.  If we don't have this, we can't
     53  * do anything.
     54  */
     55 #ifndef GEN_VERSIONx10
     56 #  error "The GEN_VERSIONx10 macro must be defined"
     57 #endif
     58 
     59 #define GEN_GEN ((GEN_VERSIONx10) / 10)
     60 #define GEN_IS_HASWELL ((GEN_VERSIONx10) == 75)
     61 #define GEN_IS_G4X ((GEN_VERSIONx10) == 45)
     62 
     63 /* Prefixing macros */
     64 #if (GEN_VERSIONx10 == 40)
     65 #  define GENX(X) GEN4_##X
     66 #  define genX(x) gen4_##x
     67 #elif (GEN_VERSIONx10 == 45)
     68 #  define GENX(X) GEN45_##X
     69 #  define genX(x) gen45_##x
     70 #elif (GEN_VERSIONx10 == 50)
     71 #  define GENX(X) GEN5_##X
     72 #  define genX(x) gen5_##x
     73 #elif (GEN_VERSIONx10 == 60)
     74 #  define GENX(X) GEN6_##X
     75 #  define genX(x) gen6_##x
     76 #elif (GEN_VERSIONx10 == 70)
     77 #  define GENX(X) GEN7_##X
     78 #  define genX(x) gen7_##x
     79 #elif (GEN_VERSIONx10 == 75)
     80 #  define GENX(X) GEN75_##X
     81 #  define genX(x) gen75_##x
     82 #elif (GEN_VERSIONx10 == 80)
     83 #  define GENX(X) GEN8_##X
     84 #  define genX(x) gen8_##x
     85 #elif (GEN_VERSIONx10 == 90)
     86 #  define GENX(X) GEN9_##X
     87 #  define genX(x) gen9_##x
     88 #else
     89 #  error "Need to add prefixing macros for this gen"
     90 #endif
     91 
     92 #endif /* GEN_MACROS_H */
     93