src/gallium/winsys/r600/drm/radeon_state.c

   1 /*
   2  * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
   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  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the 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 NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *      Jerome Glisse
  25  */
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <errno.h>
  30 #include "radeon_priv.h"
  31
  32 /*
  33  * state core functions
  34  */
  35 int radeon_state_init(struct radeon_state *state, struct radeon *radeon, u32 type, u32 id)
  36 {
  37         if (type > radeon->ntype) {
  38                 fprintf(stderr, "%s invalid type %d\n", __func__, type);
  39                 return -EINVAL;
  40         }
  41         if (id > radeon->nstate) {
  42                 fprintf(stderr, "%s invalid state id %d\n", __func__, id);
  43                 return -EINVAL;
  44         }
  45         memset(state, 0, sizeof(struct radeon_state));
  46         state->radeon = radeon;
  47         state->type = type;
  48         state->id = id;
  49         state->npm4 = radeon->type[type].npm4;
  50         state->nstates = radeon->type[type].nstates;
  51         return 0;
  52 }
  53
  54 int radeon_state_replace_always(struct radeon_state *ostate,
  55                                 struct radeon_state *nstate)
  56 {
  57         return 1;
  58 }
  59
  60 int radeon_state_pm4_generic(struct radeon_state *state)
  61 {
  62         return -EINVAL;
  63 }
  64
  65 static u32 crc32(void *d, size_t len)
  66 {
  67         u16 *data = (uint16_t*)d;
  68         u32 sum1 = 0xffff, sum2 = 0xffff;
  69
  70         len = len >> 1;
  71         while (len) {
  72                 unsigned tlen = len > 360 ? 360 : len;
  73                 len -= tlen;
  74                 do {
  75                         sum1 += *data++;
  76                         sum2 += sum1;
  77                 } while (--tlen);
  78                 sum1 = (sum1 & 0xffff) + (sum1 >> 16);
  79                 sum2 = (sum2 & 0xffff) + (sum2 >> 16);
  80         }
  81         /* Second reduction step to reduce sums to 16 bits */
  82         sum1 = (sum1 & 0xffff) + (sum1 >> 16);
  83         sum2 = (sum2 & 0xffff) + (sum2 >> 16);
  84         return sum2 << 16 | sum1;
  85 }
  86
  87 int radeon_state_pm4(struct radeon_state *state)
  88 {
  89         int r;
  90
  91         if (state == NULL || state->cpm4)
  92                 return 0;
  93         r = state->radeon->type[state->type].pm4(state);
  94         if (r) {
  95                 fprintf(stderr, "%s failed to build PM4 for state(%d %d)\n",
  96                         __func__, state->type, state->id);
  97                 return r;
  98         }
  99         state->pm4_crc = crc32(state->pm4, state->cpm4 * 4);
 100         state->valid = 1;
 101         return 0;
 102 }
 103
 104 int radeon_state_reloc(struct radeon_state *state, unsigned id, unsigned bo_id)
 105 {
 106         state->reloc_pm4_id[state->nreloc] = id;
 107         state->reloc_bo_id[state->nreloc] = bo_id;
 108         state->nreloc++;
 109         return 0;
 110 }