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      1 /*	$NetBSD: nouveau_nvkm_subdev_mmu_nv50.c,v 1.3 2021/12/18 23:45:41 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2010 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_mmu_nv50.c,v 1.3 2021/12/18 23:45:41 riastradh Exp $");
     28 
     29 #include "mem.h"
     30 #include "vmm.h"
     31 
     32 #include <nvif/class.h>
     33 
     34 const u8 *
     35 nv50_mmu_kind(struct nvkm_mmu *base, int *count, u8 *invalid)
     36 {
     37 	/* 0x01: no bank swizzle
     38 	 * 0x02: bank swizzled
     39 	 * 0x7f: invalid
     40 	 *
     41 	 * 0x01/0x02 are values understood by the VRAM allocator,
     42 	 * and are required to avoid mixing the two types within
     43 	 * a certain range.
     44 	 */
     45 	static const u8
     46 	kind[128] = {
     47 		0x01, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, /* 0x00 */
     48 		0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f,
     49 		0x01, 0x01, 0x01, 0x01, 0x7f, 0x7f, 0x7f, 0x7f, /* 0x10 */
     50 		0x02, 0x02, 0x02, 0x02, 0x7f, 0x7f, 0x7f, 0x7f,
     51 		0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x7f, /* 0x20 */
     52 		0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x7f,
     53 		0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, /* 0x30 */
     54 		0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f,
     55 		0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, /* 0x40 */
     56 		0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x7f, 0x7f,
     57 		0x7f, 0x7f, 0x7f, 0x7f, 0x01, 0x01, 0x01, 0x7f, /* 0x50 */
     58 		0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f,
     59 		0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x7f, /* 0x60 */
     60 		0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02,
     61 		0x01, 0x7f, 0x02, 0x7f, 0x01, 0x7f, 0x02, 0x7f, /* 0x70 */
     62 		0x01, 0x01, 0x02, 0x02, 0x01, 0x01, 0x7f, 0x7f
     63 	};
     64 	*count = ARRAY_SIZE(kind);
     65 	*invalid = 0x7f;
     66 	return kind;
     67 }
     68 
     69 static const struct nvkm_mmu_func
     70 nv50_mmu = {
     71 	.dma_bits = 40,
     72 	.mmu = {{ -1, -1, NVIF_CLASS_MMU_NV50}},
     73 	.mem = {{ -1,  0, NVIF_CLASS_MEM_NV50}, nv50_mem_new, nv50_mem_map },
     74 	.vmm = {{ -1, -1, NVIF_CLASS_VMM_NV50}, nv50_vmm_new, false, 0x1400 },
     75 	.kind = nv50_mmu_kind,
     76 };
     77 
     78 int
     79 nv50_mmu_new(struct nvkm_device *device, int index, struct nvkm_mmu **pmmu)
     80 {
     81 	return nvkm_mmu_new_(&nv50_mmu, device, index, pmmu);
     82 }
     83