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      1 /*	$NetBSD: nouveau_nvkm_subdev_fb_nv20.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_nv20.c,v 1.3 2021/12/18 23:45:39 riastradh Exp $");
     30 
     31 #include "priv.h"
     32 #include "ram.h"
     33 
     34 void
     35 nv20_fb_tile_init(struct nvkm_fb *fb, int i, u32 addr, u32 size, u32 pitch,
     36 		  u32 flags, struct nvkm_fb_tile *tile)
     37 {
     38 	tile->addr  = 0x00000001 | addr;
     39 	tile->limit = max(1u, addr + size) - 1;
     40 	tile->pitch = pitch;
     41 	if (flags & 4) {
     42 		fb->func->tile.comp(fb, i, size, flags, tile);
     43 		tile->addr |= 2;
     44 	}
     45 }
     46 
     47 static void
     48 nv20_fb_tile_comp(struct nvkm_fb *fb, int i, u32 size, u32 flags,
     49 		  struct nvkm_fb_tile *tile)
     50 {
     51 	u32 tiles = DIV_ROUND_UP(size, 0x40);
     52 	u32 tags  = round_up(tiles / fb->ram->parts, 0x40);
     53 	if (!nvkm_mm_head(&fb->tags, 0, 1, tags, tags, 1, &tile->tag)) {
     54 		if (!(flags & 2)) tile->zcomp = 0x00000000; /* Z16 */
     55 		else              tile->zcomp = 0x04000000; /* Z24S8 */
     56 		tile->zcomp |= tile->tag->offset;
     57 		tile->zcomp |= 0x80000000; /* enable */
     58 #ifdef __BIG_ENDIAN
     59 		tile->zcomp |= 0x08000000;
     60 #endif
     61 	}
     62 }
     63 
     64 void
     65 nv20_fb_tile_fini(struct nvkm_fb *fb, int i, struct nvkm_fb_tile *tile)
     66 {
     67 	tile->addr  = 0;
     68 	tile->limit = 0;
     69 	tile->pitch = 0;
     70 	tile->zcomp = 0;
     71 	nvkm_mm_free(&fb->tags, &tile->tag);
     72 }
     73 
     74 void
     75 nv20_fb_tile_prog(struct nvkm_fb *fb, int i, struct nvkm_fb_tile *tile)
     76 {
     77 	struct nvkm_device *device = fb->subdev.device;
     78 	nvkm_wr32(device, 0x100244 + (i * 0x10), tile->limit);
     79 	nvkm_wr32(device, 0x100248 + (i * 0x10), tile->pitch);
     80 	nvkm_wr32(device, 0x100240 + (i * 0x10), tile->addr);
     81 	nvkm_rd32(device, 0x100240 + (i * 0x10));
     82 	nvkm_wr32(device, 0x100300 + (i * 0x04), tile->zcomp);
     83 }
     84 
     85 u32
     86 nv20_fb_tags(struct nvkm_fb *fb)
     87 {
     88 	const u32 tags = nvkm_rd32(fb->subdev.device, 0x100320);
     89 	return tags ? tags + 1 : 0;
     90 }
     91 
     92 static const struct nvkm_fb_func
     93 nv20_fb = {
     94 	.tags = nv20_fb_tags,
     95 	.tile.regions = 8,
     96 	.tile.init = nv20_fb_tile_init,
     97 	.tile.comp = nv20_fb_tile_comp,
     98 	.tile.fini = nv20_fb_tile_fini,
     99 	.tile.prog = nv20_fb_tile_prog,
    100 	.ram_new = nv20_ram_new,
    101 };
    102 
    103 int
    104 nv20_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
    105 {
    106 	return nvkm_fb_new_(&nv20_fb, device, index, pfb);
    107 }
    108