1 #ifndef __NVKM_VMM_H__
2 #define __NVKM_VMM_H__
3 #include "priv.h"
4 #include <core/memory.h>
5 enum nvkm_memory_target;
6 
7 struct nvkm_vmm_pt {
8 	/* Some GPUs have a mapping level with a dual page tables to
9 	 * support large and small pages in the same address-range.
10 	 *
11 	 * We track the state of both page tables in one place, which
12 	 * is why there's multiple PT pointers/refcounts here.
13 	 */
14 	struct nvkm_mmu_pt *pt[2];
15 	u32 refs[2];
16 
17 	/* Page size handled by this PT.
18 	 *
19 	 * Tesla backend needs to know this when writinge PDEs,
20 	 * otherwise unnecessary.
21 	 */
22 	u8 page;
23 
24 	/* Entire page table sparse.
25 	 *
26 	 * Used to propagate sparseness to child page tables.
27 	 */
28 	bool sparse:1;
29 
30 	/* Tracking for page directories.
31 	 *
32 	 * The array is indexed by PDE, and will either point to the
33 	 * child page table, or indicate the PDE is marked as sparse.
34 	 **/
35 #define NVKM_VMM_PDE_INVALID(pde) IS_ERR_OR_NULL(pde)
36 #define NVKM_VMM_PDE_SPARSED(pde) IS_ERR(pde)
37 #define NVKM_VMM_PDE_SPARSE       ERR_PTR(-EBUSY)
38 	struct nvkm_vmm_pt **pde;
39 
40 	/* Tracking for dual page tables.
41 	 *
42 	 * There's one entry for each LPTE, keeping track of whether
43 	 * there are valid SPTEs in the same address-range.
44 	 *
45 	 * This information is used to manage LPTE state transitions.
46 	 */
47 #define NVKM_VMM_PTE_SPARSE 0x80
48 #define NVKM_VMM_PTE_VALID  0x40
49 #define NVKM_VMM_PTE_SPTES  0x3f
50 	u8 pte[];
51 };
52 
53 typedef void (*nvkm_vmm_pxe_func)(struct nvkm_vmm *,
54 				  struct nvkm_mmu_pt *, u32 ptei, u32 ptes);
55 typedef void (*nvkm_vmm_pde_func)(struct nvkm_vmm *,
56 				  struct nvkm_vmm_pt *, u32 pdei);
57 typedef void (*nvkm_vmm_pte_func)(struct nvkm_vmm *, struct nvkm_mmu_pt *,
58 				  u32 ptei, u32 ptes, struct nvkm_vmm_map *);
59 
60 struct nvkm_vmm_desc_func {
61 	nvkm_vmm_pxe_func invalid;
62 	nvkm_vmm_pxe_func unmap;
63 	nvkm_vmm_pxe_func sparse;
64 
65 	nvkm_vmm_pde_func pde;
66 
67 	nvkm_vmm_pte_func mem;
68 	nvkm_vmm_pte_func dma;
69 	nvkm_vmm_pte_func sgl;
70 
71 	nvkm_vmm_pte_func pfn;
72 	bool (*pfn_clear)(struct nvkm_vmm *, struct nvkm_mmu_pt *, u32 ptei, u32 ptes);
73 	nvkm_vmm_pxe_func pfn_unmap;
74 };
75 
76 extern const struct nvkm_vmm_desc_func gf100_vmm_pgd;
77 void gf100_vmm_pgd_pde(struct nvkm_vmm *, struct nvkm_vmm_pt *, u32);
78 extern const struct nvkm_vmm_desc_func gf100_vmm_pgt;
79 void gf100_vmm_pgt_unmap(struct nvkm_vmm *, struct nvkm_mmu_pt *, u32, u32);
80 void gf100_vmm_pgt_mem(struct nvkm_vmm *, struct nvkm_mmu_pt *, u32, u32,
81 		       struct nvkm_vmm_map *);
82 void gf100_vmm_pgt_dma(struct nvkm_vmm *, struct nvkm_mmu_pt *, u32, u32,
83 		       struct nvkm_vmm_map *);
84 void gf100_vmm_pgt_sgl(struct nvkm_vmm *, struct nvkm_mmu_pt *, u32, u32,
85 		       struct nvkm_vmm_map *);
86 
87 void gk104_vmm_lpt_invalid(struct nvkm_vmm *, struct nvkm_mmu_pt *, u32, u32);
88 
89 struct nvkm_vmm_desc {
90 	enum {
91 		PGD,
92 		PGT,
93 		SPT,
94 		LPT,
95 	} type;
96 	u8 bits;	/* VMA bits covered by PT. */
97 	u8 size;	/* Bytes-per-PTE. */
98 	u32 align;	/* PT address alignment. */
99 	const struct nvkm_vmm_desc_func *func;
100 };
101 
102 extern const struct nvkm_vmm_desc nv50_vmm_desc_12[];
103 extern const struct nvkm_vmm_desc nv50_vmm_desc_16[];
104 
105 extern const struct nvkm_vmm_desc gk104_vmm_desc_16_12[];
106 extern const struct nvkm_vmm_desc gk104_vmm_desc_16_16[];
107 extern const struct nvkm_vmm_desc gk104_vmm_desc_17_12[];
108 extern const struct nvkm_vmm_desc gk104_vmm_desc_17_17[];
109 
110 extern const struct nvkm_vmm_desc gm200_vmm_desc_16_12[];
111 extern const struct nvkm_vmm_desc gm200_vmm_desc_16_16[];
112 extern const struct nvkm_vmm_desc gm200_vmm_desc_17_12[];
113 extern const struct nvkm_vmm_desc gm200_vmm_desc_17_17[];
114 
115 extern const struct nvkm_vmm_desc gp100_vmm_desc_12[];
116 extern const struct nvkm_vmm_desc gp100_vmm_desc_16[];
117 
118 struct nvkm_vmm_page {
119 	u8 shift;
120 	const struct nvkm_vmm_desc *desc;
121 #define NVKM_VMM_PAGE_SPARSE                                               0x01
122 #define NVKM_VMM_PAGE_VRAM                                                 0x02
123 #define NVKM_VMM_PAGE_HOST                                                 0x04
124 #define NVKM_VMM_PAGE_COMP                                                 0x08
125 #define NVKM_VMM_PAGE_Sxxx                                (NVKM_VMM_PAGE_SPARSE)
126 #define NVKM_VMM_PAGE_xVxx                                  (NVKM_VMM_PAGE_VRAM)
127 #define NVKM_VMM_PAGE_SVxx             (NVKM_VMM_PAGE_Sxxx | NVKM_VMM_PAGE_VRAM)
128 #define NVKM_VMM_PAGE_xxHx                                  (NVKM_VMM_PAGE_HOST)
129 #define NVKM_VMM_PAGE_SxHx             (NVKM_VMM_PAGE_Sxxx | NVKM_VMM_PAGE_HOST)
130 #define NVKM_VMM_PAGE_xVHx             (NVKM_VMM_PAGE_xVxx | NVKM_VMM_PAGE_HOST)
131 #define NVKM_VMM_PAGE_SVHx             (NVKM_VMM_PAGE_SVxx | NVKM_VMM_PAGE_HOST)
132 #define NVKM_VMM_PAGE_xVxC             (NVKM_VMM_PAGE_xVxx | NVKM_VMM_PAGE_COMP)
133 #define NVKM_VMM_PAGE_SVxC             (NVKM_VMM_PAGE_SVxx | NVKM_VMM_PAGE_COMP)
134 #define NVKM_VMM_PAGE_xxHC             (NVKM_VMM_PAGE_xxHx | NVKM_VMM_PAGE_COMP)
135 #define NVKM_VMM_PAGE_SxHC             (NVKM_VMM_PAGE_SxHx | NVKM_VMM_PAGE_COMP)
136 	u8 type;
137 };
138 
139 struct nvkm_vmm_func {
140 	int (*join)(struct nvkm_vmm *, struct nvkm_memory *inst);
141 	void (*part)(struct nvkm_vmm *, struct nvkm_memory *inst);
142 
143 	int (*aper)(enum nvkm_memory_target);
144 	int (*valid)(struct nvkm_vmm *, void *argv, u32 argc,
145 		     struct nvkm_vmm_map *);
146 	void (*flush)(struct nvkm_vmm *, int depth);
147 
148 	int (*mthd)(struct nvkm_vmm *, struct nvkm_client *,
149 		    u32 mthd, void *argv, u32 argc);
150 
151 	void (*invalidate_pdb)(struct nvkm_vmm *, u64 addr);
152 
153 	u64 page_block;
154 	const struct nvkm_vmm_page page[];
155 };
156 
157 struct nvkm_vmm_join {
158 	struct nvkm_memory *inst;
159 	struct list_head head;
160 };
161 
162 int nvkm_vmm_new_(const struct nvkm_vmm_func *, struct nvkm_mmu *,
163 		  u32 pd_header, bool managed, u64 addr, u64 size,
164 		  struct lock_class_key *, const char *name,
165 		  struct nvkm_vmm **);
166 int nvkm_vmm_ctor(const struct nvkm_vmm_func *, struct nvkm_mmu *,
167 		  u32 pd_header, bool managed, u64 addr, u64 size,
168 		  struct lock_class_key *, const char *name, struct nvkm_vmm *);
169 struct nvkm_vma *nvkm_vmm_node_search(struct nvkm_vmm *, u64 addr);
170 struct nvkm_vma *nvkm_vmm_node_split(struct nvkm_vmm *, struct nvkm_vma *,
171 				     u64 addr, u64 size);
172 int nvkm_vmm_get_locked(struct nvkm_vmm *, bool getref, bool mapref,
173 			bool sparse, u8 page, u8 align, u64 size,
174 			struct nvkm_vma **pvma);
175 void nvkm_vmm_put_locked(struct nvkm_vmm *, struct nvkm_vma *);
176 void nvkm_vmm_unmap_locked(struct nvkm_vmm *, struct nvkm_vma *, bool pfn);
177 void nvkm_vmm_unmap_region(struct nvkm_vmm *, struct nvkm_vma *);
178 
179 #define NVKM_VMM_PFN_ADDR                                 0xfffffffffffff000ULL
180 #define NVKM_VMM_PFN_ADDR_SHIFT                                              12
181 #define NVKM_VMM_PFN_APER                                 0x00000000000000f0ULL
182 #define NVKM_VMM_PFN_HOST                                 0x0000000000000000ULL
183 #define NVKM_VMM_PFN_VRAM                                 0x0000000000000010ULL
184 #define NVKM_VMM_PFN_W                                    0x0000000000000002ULL
185 #define NVKM_VMM_PFN_V                                    0x0000000000000001ULL
186 #define NVKM_VMM_PFN_NONE                                 0x0000000000000000ULL
187 
188 int nvkm_vmm_pfn_map(struct nvkm_vmm *, u8 page, u64 addr, u64 size, u64 *pfn);
189 int nvkm_vmm_pfn_unmap(struct nvkm_vmm *, u64 addr, u64 size);
190 
191 struct nvkm_vma *nvkm_vma_tail(struct nvkm_vma *, u64 tail);
192 
193 int nv04_vmm_new_(const struct nvkm_vmm_func *, struct nvkm_mmu *, u32,
194 		  bool, u64, u64, void *, u32, struct lock_class_key *,
195 		  const char *, struct nvkm_vmm **);
196 int nv04_vmm_valid(struct nvkm_vmm *, void *, u32, struct nvkm_vmm_map *);
197 
198 int nv50_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
199 void nv50_vmm_part(struct nvkm_vmm *, struct nvkm_memory *);
200 int nv50_vmm_valid(struct nvkm_vmm *, void *, u32, struct nvkm_vmm_map *);
201 void nv50_vmm_flush(struct nvkm_vmm *, int);
202 
203 int gf100_vmm_new_(const struct nvkm_vmm_func *, const struct nvkm_vmm_func *,
204 		   struct nvkm_mmu *, bool, u64, u64, void *, u32,
205 		   struct lock_class_key *, const char *, struct nvkm_vmm **);
206 int gf100_vmm_join_(struct nvkm_vmm *, struct nvkm_memory *, u64 base);
207 int gf100_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
208 void gf100_vmm_part(struct nvkm_vmm *, struct nvkm_memory *);
209 int gf100_vmm_aper(enum nvkm_memory_target);
210 int gf100_vmm_valid(struct nvkm_vmm *, void *, u32, struct nvkm_vmm_map *);
211 void gf100_vmm_flush(struct nvkm_vmm *, int);
212 void gf100_vmm_invalidate(struct nvkm_vmm *, u32 type);
213 void gf100_vmm_invalidate_pdb(struct nvkm_vmm *, u64 addr);
214 
215 int gk20a_vmm_aper(enum nvkm_memory_target);
216 
217 int gm200_vmm_new_(const struct nvkm_vmm_func *, const struct nvkm_vmm_func *,
218 		   struct nvkm_mmu *, bool, u64, u64, void *, u32,
219 		   struct lock_class_key *, const char *, struct nvkm_vmm **);
220 int gm200_vmm_join_(struct nvkm_vmm *, struct nvkm_memory *, u64 base);
221 int gm200_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
222 
223 int gp100_vmm_new_(const struct nvkm_vmm_func *,
224 		   struct nvkm_mmu *, bool, u64, u64, void *, u32,
225 		   struct lock_class_key *, const char *, struct nvkm_vmm **);
226 int gp100_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
227 int gp100_vmm_valid(struct nvkm_vmm *, void *, u32, struct nvkm_vmm_map *);
228 void gp100_vmm_flush(struct nvkm_vmm *, int);
229 int gp100_vmm_mthd(struct nvkm_vmm *, struct nvkm_client *, u32, void *, u32);
230 void gp100_vmm_invalidate_pdb(struct nvkm_vmm *, u64 addr);
231 
232 int gv100_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
233 
234 int nv04_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
235 		 struct lock_class_key *, const char *, struct nvkm_vmm **);
236 int nv41_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
237 		 struct lock_class_key *, const char *, struct nvkm_vmm **);
238 int nv44_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
239 		 struct lock_class_key *, const char *, struct nvkm_vmm **);
240 int nv50_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
241 		 struct lock_class_key *, const char *, struct nvkm_vmm **);
242 int mcp77_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
243 		  struct lock_class_key *, const char *, struct nvkm_vmm **);
244 int g84_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
245 		struct lock_class_key *, const char *, struct nvkm_vmm **);
246 int gf100_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
247 		  struct lock_class_key *, const char *, struct nvkm_vmm **);
248 int gk104_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
249 		  struct lock_class_key *, const char *, struct nvkm_vmm **);
250 int gk20a_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
251 		  struct lock_class_key *, const char *, struct nvkm_vmm **);
252 int gm200_vmm_new_fixed(struct nvkm_mmu *, bool, u64, u64, void *, u32,
253 			struct lock_class_key *, const char *,
254 			struct nvkm_vmm **);
255 int gm200_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
256 		  struct lock_class_key *, const char *,
257 		  struct nvkm_vmm **);
258 int gm20b_vmm_new_fixed(struct nvkm_mmu *, bool, u64, u64, void *, u32,
259 			struct lock_class_key *, const char *,
260 			struct nvkm_vmm **);
261 int gm20b_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
262 		  struct lock_class_key *, const char *,
263 		  struct nvkm_vmm **);
264 int gp100_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
265 		  struct lock_class_key *, const char *,
266 		  struct nvkm_vmm **);
267 int gp10b_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
268 		  struct lock_class_key *, const char *,
269 		  struct nvkm_vmm **);
270 int gv100_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
271 		  struct lock_class_key *, const char *,
272 		  struct nvkm_vmm **);
273 int tu102_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
274 		  struct lock_class_key *, const char *,
275 		  struct nvkm_vmm **);
276 
277 #define VMM_PRINT(l,v,p,f,a...) do {                                           \
278 	struct nvkm_vmm *_vmm = (v);                                           \
279 	if (CONFIG_NOUVEAU_DEBUG >= (l) && _vmm->debug >= (l)) {               \
280 		nvkm_printk_(&_vmm->mmu->subdev, 0, p, "%s: "f"\n",            \
281 			     _vmm->name, ##a);                                 \
282 	}                                                                      \
283 } while(0)
284 #define VMM_DEBUG(v,f,a...) VMM_PRINT(NV_DBG_DEBUG, (v), info, f, ##a)
285 #define VMM_TRACE(v,f,a...) VMM_PRINT(NV_DBG_TRACE, (v), info, f, ##a)
286 #define VMM_SPAM(v,f,a...)  VMM_PRINT(NV_DBG_SPAM , (v),  dbg, f, ##a)
287 
288 #define VMM_MAP_ITER(VMM,PT,PTEI,PTEN,MAP,FILL,BASE,SIZE,NEXT) do {            \
289 	nvkm_kmap((PT)->memory);                                               \
290 	while (PTEN) {                                                         \
291 		u64 _ptes = ((SIZE) - MAP->off) >> MAP->page->shift;           \
292 		u64 _addr = ((BASE) + MAP->off);                               \
293                                                                                \
294 		if (_ptes > PTEN) {                                            \
295 			MAP->off += PTEN << MAP->page->shift;                  \
296 			_ptes = PTEN;                                          \
297 		} else {                                                       \
298 			MAP->off = 0;                                          \
299 			NEXT;                                                  \
300 		}                                                              \
301                                                                                \
302 		VMM_SPAM(VMM, "ITER %08x %08x PTE(s)", PTEI, (u32)_ptes);      \
303                                                                                \
304 		FILL(VMM, PT, PTEI, _ptes, MAP, _addr);                        \
305 		PTEI += _ptes;                                                 \
306 		PTEN -= _ptes;                                                 \
307 	};                                                                     \
308 	nvkm_done((PT)->memory);                                               \
309 } while(0)
310 
311 #define VMM_MAP_ITER_MEM(VMM,PT,PTEI,PTEN,MAP,FILL)                            \
312 	VMM_MAP_ITER(VMM,PT,PTEI,PTEN,MAP,FILL,                                \
313 		     ((u64)MAP->mem->offset << NVKM_RAM_MM_SHIFT),             \
314 		     ((u64)MAP->mem->length << NVKM_RAM_MM_SHIFT),             \
315 		     (MAP->mem = MAP->mem->next))
316 #define VMM_MAP_ITER_DMA(VMM,PT,PTEI,PTEN,MAP,FILL)                            \
317 	VMM_MAP_ITER(VMM,PT,PTEI,PTEN,MAP,FILL,                                \
318 		     *MAP->dma, PAGE_SIZE, MAP->dma++)
319 #define VMM_MAP_ITER_SGL(VMM,PT,PTEI,PTEN,MAP,FILL)                            \
320 	VMM_MAP_ITER(VMM,PT,PTEI,PTEN,MAP,FILL,                                \
321 		     sg_dma_address(MAP->sgl), sg_dma_len(MAP->sgl),           \
322 		     (MAP->sgl = sg_next(MAP->sgl)))
323 
324 #define VMM_FO(m,o,d,c,b) nvkm_fo##b((m)->memory, (o), (d), (c))
325 #define VMM_WO(m,o,d,c,b) nvkm_wo##b((m)->memory, (o), (d))
326 #define VMM_XO(m,v,o,d,c,b,fn,f,a...) do {                                     \
327 	const u32 _pteo = (o); u##b _data = (d);                               \
328 	VMM_SPAM((v), "   %010llx "f, (m)->addr + _pteo, _data, ##a);          \
329 	VMM_##fn((m), (m)->base + _pteo, _data, (c), b);                       \
330 } while(0)
331 
332 #define VMM_WO032(m,v,o,d) VMM_XO((m),(v),(o),(d),  1, 32, WO, "%08x")
333 #define VMM_FO032(m,v,o,d,c)                                                   \
334 	VMM_XO((m),(v),(o),(d),(c), 32, FO, "%08x %08x", (c))
335 
336 #define VMM_WO064(m,v,o,d) VMM_XO((m),(v),(o),(d),  1, 64, WO, "%016llx")
337 #define VMM_FO064(m,v,o,d,c)                                                   \
338 	VMM_XO((m),(v),(o),(d),(c), 64, FO, "%016llx %08x", (c))
339 
340 #define VMM_XO128(m,v,o,lo,hi,c,f,a...) do {                                   \
341 	u32 _pteo = (o), _ptes = (c);                                          \
342 	const u64 _addr = (m)->addr + _pteo;                                   \
343 	VMM_SPAM((v), "   %010llx %016llx%016llx"f, _addr, (hi), (lo), ##a);   \
344 	while (_ptes--) {                                                      \
345 		nvkm_wo64((m)->memory, (m)->base + _pteo + 0, (lo));           \
346 		nvkm_wo64((m)->memory, (m)->base + _pteo + 8, (hi));           \
347 		_pteo += 0x10;                                                 \
348 	}                                                                      \
349 } while(0)
350 
351 #define VMM_WO128(m,v,o,lo,hi) VMM_XO128((m),(v),(o),(lo),(hi), 1, "")
352 #define VMM_FO128(m,v,o,lo,hi,c) do {                                          \
353 	nvkm_kmap((m)->memory);                                                \
354 	VMM_XO128((m),(v),(o),(lo),(hi),(c), " %08x", (c));                    \
355 	nvkm_done((m)->memory);                                                \
356 } while(0)
357 #endif
358