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      1 /*	$NetBSD: nouveau_nvkm_subdev_fb_nv36.c,v 1.3 2021/12/18 23:45:39 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright (C) 2010 Francisco Jerez.
      5  * All Rights Reserved.
      6  *
      7  * Permission is hereby granted, free of charge, to any person obtaining
      8  * a copy of this software and associated documentation files (the
      9  * "Software"), to deal in the Software without restriction, including
     10  * without limitation the rights to use, copy, modify, merge, publish,
     11  * distribute, sublicense, and/or sell copies of the Software, and to
     12  * permit persons to whom the Software is furnished to do so, subject to
     13  * the following conditions:
     14  *
     15  * The above copyright notice and this permission notice (including the
     16  * next paragraph) shall be included in all copies or substantial
     17  * portions of the Software.
     18  *
     19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     20  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
     22  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
     23  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     24  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
     25  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     26  *
     27  */
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_fb_nv36.c,v 1.3 2021/12/18 23:45:39 riastradh Exp $");
     30 
     31 #include "priv.h"
     32 #include "ram.h"
     33 
     34 static void
     35 nv36_fb_tile_comp(struct nvkm_fb *fb, int i, u32 size, u32 flags,
     36 		  struct nvkm_fb_tile *tile)
     37 {
     38 	u32 tiles = DIV_ROUND_UP(size, 0x40);
     39 	u32 tags  = round_up(tiles / fb->ram->parts, 0x40);
     40 	if (!nvkm_mm_head(&fb->tags, 0, 1, tags, tags, 1, &tile->tag)) {
     41 		if (flags & 2) tile->zcomp |= 0x10000000; /* Z16 */
     42 		else           tile->zcomp |= 0x20000000; /* Z24S8 */
     43 		tile->zcomp |= ((tile->tag->offset           ) >> 6);
     44 		tile->zcomp |= ((tile->tag->offset + tags - 1) >> 6) << 14;
     45 #ifdef __BIG_ENDIAN
     46 		tile->zcomp |= 0x80000000;
     47 #endif
     48 	}
     49 }
     50 
     51 static const struct nvkm_fb_func
     52 nv36_fb = {
     53 	.tags = nv20_fb_tags,
     54 	.init = nv30_fb_init,
     55 	.tile.regions = 8,
     56 	.tile.init = nv30_fb_tile_init,
     57 	.tile.comp = nv36_fb_tile_comp,
     58 	.tile.fini = nv20_fb_tile_fini,
     59 	.tile.prog = nv20_fb_tile_prog,
     60 	.ram_new = nv20_ram_new,
     61 };
     62 
     63 int
     64 nv36_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
     65 {
     66 	return nvkm_fb_new_(&nv36_fb, device, index, pfb);
     67 }
     68