diff options
Diffstat (limited to 'src/glamo-drm.c')
-rw-r--r-- | src/glamo-drm.c | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/src/glamo-drm.c b/src/glamo-drm.c new file mode 100644 index 0000000..aac93bb --- /dev/null +++ b/src/glamo-drm.c @@ -0,0 +1,107 @@ +/* + * DRI for the SMedia Glamo3362 X.org Driver + * + * 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 + * + */ + + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <xf86.h> +#include <xf86drm.h> +#include <glamo_drm.h> +#include <glamo_bo.h> + +#include "glamo.h" + + +/* Submit the prepared command sequence to the kernel */ +void GlamoDRMDispatch(GlamoPtr pGlamo) +{ + drm_glamo_cmd_buffer_t cmdbuf; + int r; + + cmdbuf.buf = (char *)pGlamo->cmdq_drm; + cmdbuf.bufsz = pGlamo->cmdq_drm_used * 2; /* -> bytes */ + cmdbuf.nobjs = pGlamo->cmdq_obj_used; + cmdbuf.objs = pGlamo->cmdq_objs; + cmdbuf.obj_pos = pGlamo->cmdq_obj_pos; + + r = drmCommandWrite(pGlamo->drm_fd, DRM_GLAMO_CMDBUF, + &cmdbuf, sizeof(cmdbuf)); + if ( r != 0 ) { + xf86DrvMsg(pGlamo->pScreen->myNum, X_ERROR, + "DRM_GLAMO_CMDBUF failed\n"); + } + + /* Reset counts to zero for the next sequence */ + pGlamo->cmdq_obj_used = 0; + pGlamo->cmdq_drm_used = 0; +} + + +void GlamoDRMAddCommand(GlamoPtr pGlamo, uint16_t reg, uint16_t val) +{ + if ( pGlamo->cmdq_drm_used == pGlamo->cmdq_drm_size ) { + xf86DrvMsg(pGlamo->pScreen->myNum, X_INFO, + "Forced command cache flush.\n"); + GlamoDRMDispatch(pGlamo); + } + + /* Record command */ + pGlamo->cmdq_drm[pGlamo->cmdq_drm_used++] = reg; + pGlamo->cmdq_drm[pGlamo->cmdq_drm_used++] = val; +} + + +void GlamoDRMAddCommandBO(GlamoPtr pGlamo, uint16_t reg, struct glamo_bo *bo) +{ + if ( pGlamo->cmdq_drm_used == pGlamo->cmdq_drm_size ) { + xf86DrvMsg(pGlamo->pScreen->myNum, X_INFO, + "Forced command cache flush.\n"); + GlamoDRMDispatch(pGlamo); + } + + /* Record object position */ + pGlamo->cmdq_objs[pGlamo->cmdq_obj_used] = bo->handle; + /* -> bytes */ + pGlamo->cmdq_obj_pos[pGlamo->cmdq_obj_used] = pGlamo->cmdq_drm_used * 2; + pGlamo->cmdq_obj_used++; + + /* Record command */ + pGlamo->cmdq_drm[pGlamo->cmdq_drm_used++] = reg; + pGlamo->cmdq_drm[pGlamo->cmdq_drm_used++] = 0x0000; + pGlamo->cmdq_drm[pGlamo->cmdq_drm_used++] = reg+2; + pGlamo->cmdq_drm[pGlamo->cmdq_drm_used++] = 0x0000; + + pGlamo->last_buffer_object = bo; +} + + +void GlamoDRMInit(GlamoPtr pGlamo) +{ + pGlamo->cmdq_objs = malloc(1024); + pGlamo->cmdq_obj_pos = malloc(1024); + pGlamo->cmdq_obj_used = 0; + pGlamo->cmdq_drm_used = 0; + pGlamo->cmdq_drm_size = 4 * 1024; + pGlamo->cmdq_drm = malloc(pGlamo->cmdq_drm_size); +} |