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      1 /*	$NetBSD: nouveau_nvkm_subdev_mmu_vmmgk104.c,v 1.2 2021/12/18 23:45:41 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2017 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 #include <sys/cdefs.h>
     25 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_mmu_vmmgk104.c,v 1.2 2021/12/18 23:45:41 riastradh Exp $");
     26 
     27 #include "vmm.h"
     28 
     29 void
     30 gk104_vmm_lpt_invalid(struct nvkm_vmm *vmm,
     31 		      struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes)
     32 {
     33 	/* VALID_FALSE + PRIV tells the MMU to ignore corresponding SPTEs. */
     34 	VMM_FO064(pt, vmm, ptei * 8, BIT_ULL(1) /* PRIV. */, ptes);
     35 }
     36 
     37 static const struct nvkm_vmm_desc_func
     38 gk104_vmm_lpt = {
     39 	.invalid = gk104_vmm_lpt_invalid,
     40 	.unmap = gf100_vmm_pgt_unmap,
     41 	.mem = gf100_vmm_pgt_mem,
     42 };
     43 
     44 const struct nvkm_vmm_desc
     45 gk104_vmm_desc_17_12[] = {
     46 	{ SPT, 15, 8, 0x1000, &gf100_vmm_pgt },
     47 	{ PGD, 13, 8, 0x1000, &gf100_vmm_pgd },
     48 	{}
     49 };
     50 
     51 const struct nvkm_vmm_desc
     52 gk104_vmm_desc_17_17[] = {
     53 	{ LPT, 10, 8, 0x1000, &gk104_vmm_lpt },
     54 	{ PGD, 13, 8, 0x1000, &gf100_vmm_pgd },
     55 	{}
     56 };
     57 
     58 const struct nvkm_vmm_desc
     59 gk104_vmm_desc_16_12[] = {
     60 	{ SPT, 14, 8, 0x1000, &gf100_vmm_pgt },
     61 	{ PGD, 14, 8, 0x1000, &gf100_vmm_pgd },
     62 	{}
     63 };
     64 
     65 const struct nvkm_vmm_desc
     66 gk104_vmm_desc_16_16[] = {
     67 	{ LPT, 10, 8, 0x1000, &gk104_vmm_lpt },
     68 	{ PGD, 14, 8, 0x1000, &gf100_vmm_pgd },
     69 	{}
     70 };
     71 
     72 static const struct nvkm_vmm_func
     73 gk104_vmm_17 = {
     74 	.join = gf100_vmm_join,
     75 	.part = gf100_vmm_part,
     76 	.aper = gf100_vmm_aper,
     77 	.valid = gf100_vmm_valid,
     78 	.flush = gf100_vmm_flush,
     79 	.invalidate_pdb = gf100_vmm_invalidate_pdb,
     80 	.page = {
     81 		{ 17, &gk104_vmm_desc_17_17[0], NVKM_VMM_PAGE_xVxC },
     82 		{ 12, &gk104_vmm_desc_17_12[0], NVKM_VMM_PAGE_xVHx },
     83 		{}
     84 	}
     85 };
     86 
     87 static const struct nvkm_vmm_func
     88 gk104_vmm_16 = {
     89 	.join = gf100_vmm_join,
     90 	.part = gf100_vmm_part,
     91 	.aper = gf100_vmm_aper,
     92 	.valid = gf100_vmm_valid,
     93 	.flush = gf100_vmm_flush,
     94 	.invalidate_pdb = gf100_vmm_invalidate_pdb,
     95 	.page = {
     96 		{ 16, &gk104_vmm_desc_16_16[0], NVKM_VMM_PAGE_xVxC },
     97 		{ 12, &gk104_vmm_desc_16_12[0], NVKM_VMM_PAGE_xVHx },
     98 		{}
     99 	}
    100 };
    101 
    102 int
    103 gk104_vmm_new(struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size,
    104 	      void *argv, u32 argc, struct lock_class_key *key,
    105 	      const char *name, struct nvkm_vmm **pvmm)
    106 {
    107 	return gf100_vmm_new_(&gk104_vmm_16, &gk104_vmm_17, mmu, managed, addr,
    108 			      size, argv, argc, key, name, pvmm);
    109 }
    110