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      1 /*	$NetBSD: nouveau_nvkm_subdev_fb_nv44.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_nv44.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 nv44_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; /* mode = vram */
     39 	tile->addr |= addr;
     40 	tile->limit = max(1u, addr + size) - 1;
     41 	tile->pitch = pitch;
     42 }
     43 
     44 void
     45 nv44_fb_tile_prog(struct nvkm_fb *fb, int i, struct nvkm_fb_tile *tile)
     46 {
     47 	struct nvkm_device *device = fb->subdev.device;
     48 	nvkm_wr32(device, 0x100604 + (i * 0x10), tile->limit);
     49 	nvkm_wr32(device, 0x100608 + (i * 0x10), tile->pitch);
     50 	nvkm_wr32(device, 0x100600 + (i * 0x10), tile->addr);
     51 	nvkm_rd32(device, 0x100600 + (i * 0x10));
     52 }
     53 
     54 void
     55 nv44_fb_init(struct nvkm_fb *fb)
     56 {
     57 	struct nvkm_device *device = fb->subdev.device;
     58 	nvkm_wr32(device, 0x100850, 0x80000000);
     59 	nvkm_wr32(device, 0x100800, 0x00000001);
     60 }
     61 
     62 static const struct nvkm_fb_func
     63 nv44_fb = {
     64 	.init = nv44_fb_init,
     65 	.tile.regions = 12,
     66 	.tile.init = nv44_fb_tile_init,
     67 	.tile.fini = nv20_fb_tile_fini,
     68 	.tile.prog = nv44_fb_tile_prog,
     69 	.ram_new = nv44_ram_new,
     70 };
     71 
     72 int
     73 nv44_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
     74 {
     75 	return nvkm_fb_new_(&nv44_fb, device, index, pfb);
     76 }
     77