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/*
* Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
*
* 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
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHOR(S) AND/OR THEIR SUPPLIERS 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.
*
* Authors:
* Jerome Glisse
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "radeon_priv.h"
/*
* state core functions
*/
int radeon_state_init(struct radeon_state *state, struct radeon *radeon, u32 type, u32 id)
{
if (type > radeon->ntype) {
fprintf(stderr, "%s invalid type %d\n", __func__, type);
return -EINVAL;
}
if (id > radeon->nstate) {
fprintf(stderr, "%s invalid state id %d\n", __func__, id);
return -EINVAL;
}
memset(state, 0, sizeof(struct radeon_state));
state->radeon = radeon;
state->type = type;
state->id = id;
state->npm4 = radeon->type[type].npm4;
state->nstates = radeon->type[type].nstates;
return 0;
}
int radeon_state_replace_always(struct radeon_state *ostate,
struct radeon_state *nstate)
{
return 1;
}
int radeon_state_pm4_generic(struct radeon_state *state)
{
return -EINVAL;
}
static u32 crc32(void *d, size_t len)
{
u16 *data = (uint16_t*)d;
u32 sum1 = 0xffff, sum2 = 0xffff;
len = len >> 1;
while (len) {
unsigned tlen = len > 360 ? 360 : len;
len -= tlen;
do {
sum1 += *data++;
sum2 += sum1;
} while (--tlen);
sum1 = (sum1 & 0xffff) + (sum1 >> 16);
sum2 = (sum2 & 0xffff) + (sum2 >> 16);
}
/* Second reduction step to reduce sums to 16 bits */
sum1 = (sum1 & 0xffff) + (sum1 >> 16);
sum2 = (sum2 & 0xffff) + (sum2 >> 16);
return sum2 << 16 | sum1;
}
int radeon_state_pm4(struct radeon_state *state)
{
int r;
if (state == NULL || state->cpm4)
return 0;
r = state->radeon->type[state->type].pm4(state);
if (r) {
fprintf(stderr, "%s failed to build PM4 for state(%d %d)\n",
__func__, state->type, state->id);
return r;
}
state->pm4_crc = crc32(state->pm4, state->cpm4 * 4);
state->valid = 1;
return 0;
}
int radeon_state_reloc(struct radeon_state *state, unsigned id, unsigned bo_id)
{
state->reloc_pm4_id[state->nreloc] = id;
state->reloc_bo_id[state->nreloc] = bo_id;
state->nreloc++;
return 0;
}
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