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      1 /*	$NetBSD: nouveau_nvkm_subdev_fb_gm200.c,v 1.2 2021/12/18 23:45:39 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2012 Red Hat Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: Ben Skeggs
     25  */
     26 #include <sys/cdefs.h>
     27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_fb_gm200.c,v 1.2 2021/12/18 23:45:39 riastradh Exp $");
     28 
     29 #include "gf100.h"
     30 #include "ram.h"
     31 
     32 #include <core/memory.h>
     33 
     34 int
     35 gm200_fb_init_page(struct nvkm_fb *fb)
     36 {
     37 	struct nvkm_device *device = fb->subdev.device;
     38 	switch (fb->page) {
     39 	case 16: nvkm_mask(device, 0x100c80, 0x00001801, 0x00001001); break;
     40 	case 17: nvkm_mask(device, 0x100c80, 0x00001801, 0x00000000); break;
     41 	case  0: nvkm_mask(device, 0x100c80, 0x00001800, 0x00001800); break;
     42 	default:
     43 		return -EINVAL;
     44 	}
     45 	return 0;
     46 }
     47 
     48 void
     49 gm200_fb_init(struct nvkm_fb *base)
     50 {
     51 	struct gf100_fb *fb = gf100_fb(base);
     52 	struct nvkm_device *device = fb->base.subdev.device;
     53 
     54 	if (fb->r100c10_page)
     55 		nvkm_wr32(device, 0x100c10, fb->r100c10 >> 8);
     56 
     57 	nvkm_wr32(device, 0x100cc8, nvkm_memory_addr(fb->base.mmu_wr) >> 8);
     58 	nvkm_wr32(device, 0x100ccc, nvkm_memory_addr(fb->base.mmu_rd) >> 8);
     59 	nvkm_mask(device, 0x100cc4, 0x00060000,
     60 		  min(nvkm_memory_size(fb->base.mmu_rd) >> 16, (u64)2) << 17);
     61 }
     62 
     63 static const struct nvkm_fb_func
     64 gm200_fb = {
     65 	.dtor = gf100_fb_dtor,
     66 	.oneinit = gf100_fb_oneinit,
     67 	.init = gm200_fb_init,
     68 	.init_page = gm200_fb_init_page,
     69 	.intr = gf100_fb_intr,
     70 	.ram_new = gm200_ram_new,
     71 	.default_bigpage = 0 /* per-instance. */,
     72 };
     73 
     74 int
     75 gm200_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
     76 {
     77 	return gf100_fb_new_(&gm200_fb, device, index, pfb);
     78 }
     79