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/*
* Command queue submission via DRM
*
* Copyright 2009 Thomas White <taw@bitwiz.org.uk>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <stdint.h>
#include <stdlib.h>
#include <drm.h>
#include <glamo_drm.h>
#include <glamo_bo.h>
#include "glamo_context.h"
#include "glamo_cmdq.h"
/* Submit the prepared command sequence to the kernel */
void glamoDRMDispatch(glamoContext *gCtx)
{
drm_glamo_cmd_burst_t burst;
int r;
burst.base = gCtx->cmd_burst_base;
burst.data = gCtx->cmdq_drm;
burst.bufsz = gCtx->cmdq_drm_used * 2; /* -> bytes */
burst.nobjs = gCtx->cmdq_obj_used;
burst.objs = gCtx->cmdq_objs;
burst.obj_pos = gCtx->cmdq_obj_pos;
r = drmCommandWrite(gCtx->drm_fd, DRM_GLAMO_CMDBURST,
&burst, sizeof(burst));
if ( r != 0 ) {
fprintf(stderr, "DRM_GLAMO_CMDBURST failed\n");
}
/* Reset counts to zero for the next sequence */
gCtx->cmdq_obj_used = 0;
gCtx->cmdq_drm_used = 0;
}
void glamoDRMAddData(glamoContext *gCtx, uint32_t val, int len)
{
if ( gCtx->cmdq_drm_used+4 > gCtx->cmdq_drm_size ) {
fprintf(stderr, "Burst command too large\n");
return;
}
/* Record command */
if ( len == 2 ) {
gCtx->cmdq_drm[gCtx->cmdq_drm_used++] = val & 0xffff;
} else if ( len == 4 ) {
gCtx->cmdq_drm[gCtx->cmdq_drm_used++] = val & 0x0000ffff;
gCtx->cmdq_drm[gCtx->cmdq_drm_used++] = val & 0xffff0000;
} else {
fprintf(stderr, "Wrong command length!\n");
}
}
void glamoDRMAddBO(glamoContext *gCtx, struct glamo_bo *bo)
{
if ( gCtx->cmdq_drm_used+4 > gCtx->cmdq_drm_size ) {
fprintf(stderr, "Burst command too large\n");
return;
}
/* Record object position */
gCtx->cmdq_objs[gCtx->cmdq_obj_used] = bo->handle;
/* -> bytes */
gCtx->cmdq_obj_pos[gCtx->cmdq_obj_used] = gCtx->cmdq_drm_used * 2;
gCtx->cmdq_obj_used++;
/* Record command */
gCtx->cmdq_drm[gCtx->cmdq_drm_used++] = 0x0000;
gCtx->cmdq_drm[gCtx->cmdq_drm_used++] = 0x0000;
}
void glamoDRMStartBurst(glamoContext *gCtx, uint16_t base)
{
gCtx->cmd_burst_base = base;
}
void glamoInitCmdqCache(glamoContext *gCtx)
{
gCtx->cmdq_objs = malloc(1024);
gCtx->cmdq_obj_pos = malloc(1024);
gCtx->cmdq_obj_used = 0;
gCtx->cmdq_drm_used = 0;
gCtx->cmdq_drm_size = 4 * 1024;
gCtx->cmdq_drm = malloc(gCtx->cmdq_drm_size);
}
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