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 struct nvkm_vma *nvkm_vmm_node_search(struct nvkm_vmm *, u64 addr);
167 struct nvkm_vma *nvkm_vmm_node_split(struct nvkm_vmm *, struct nvkm_vma *,
168 				     u64 addr, u64 size);
169 int nvkm_vmm_get_locked(struct nvkm_vmm *, bool getref, bool mapref,
170 			bool sparse, u8 page, u8 align, u64 size,
171 			struct nvkm_vma **pvma);
172 void nvkm_vmm_put_locked(struct nvkm_vmm *, struct nvkm_vma *);
173 void nvkm_vmm_unmap_locked(struct nvkm_vmm *, struct nvkm_vma *, bool pfn);
174 void nvkm_vmm_unmap_region(struct nvkm_vmm *, struct nvkm_vma *);
175 
176 #define NVKM_VMM_PFN_ADDR                                 0xfffffffffffff000ULL
177 #define NVKM_VMM_PFN_ADDR_SHIFT                                              12
178 #define NVKM_VMM_PFN_APER                                 0x00000000000000f0ULL
179 #define NVKM_VMM_PFN_HOST                                 0x0000000000000000ULL
180 #define NVKM_VMM_PFN_VRAM                                 0x0000000000000010ULL
181 #define NVKM_VMM_PFN_A					  0x0000000000000004ULL
182 #define NVKM_VMM_PFN_W                                    0x0000000000000002ULL
183 #define NVKM_VMM_PFN_V                                    0x0000000000000001ULL
184 #define NVKM_VMM_PFN_NONE                                 0x0000000000000000ULL
185 
186 int nvkm_vmm_pfn_map(struct nvkm_vmm *, u8 page, u64 addr, u64 size, u64 *pfn);
187 int nvkm_vmm_pfn_unmap(struct nvkm_vmm *, u64 addr, u64 size);
188 
189 struct nvkm_vma *nvkm_vma_tail(struct nvkm_vma *, u64 tail);
190 
191 int nv04_vmm_new_(const struct nvkm_vmm_func *, struct nvkm_mmu *, u32,
192 		  bool, u64, u64, void *, u32, struct lock_class_key *,
193 		  const char *, struct nvkm_vmm **);
194 int nv04_vmm_valid(struct nvkm_vmm *, void *, u32, struct nvkm_vmm_map *);
195 
196 int nv50_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
197 void nv50_vmm_part(struct nvkm_vmm *, struct nvkm_memory *);
198 int nv50_vmm_valid(struct nvkm_vmm *, void *, u32, struct nvkm_vmm_map *);
199 void nv50_vmm_flush(struct nvkm_vmm *, int);
200 
201 int gf100_vmm_new_(const struct nvkm_vmm_func *, const struct nvkm_vmm_func *,
202 		   struct nvkm_mmu *, bool, u64, u64, void *, u32,
203 		   struct lock_class_key *, const char *, struct nvkm_vmm **);
204 int gf100_vmm_join_(struct nvkm_vmm *, struct nvkm_memory *, u64 base);
205 int gf100_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
206 void gf100_vmm_part(struct nvkm_vmm *, struct nvkm_memory *);
207 int gf100_vmm_aper(enum nvkm_memory_target);
208 int gf100_vmm_valid(struct nvkm_vmm *, void *, u32, struct nvkm_vmm_map *);
209 void gf100_vmm_flush(struct nvkm_vmm *, int);
210 void gf100_vmm_invalidate(struct nvkm_vmm *, u32 type);
211 void gf100_vmm_invalidate_pdb(struct nvkm_vmm *, u64 addr);
212 
213 int gk20a_vmm_aper(enum nvkm_memory_target);
214 
215 int gm200_vmm_new_(const struct nvkm_vmm_func *, const struct nvkm_vmm_func *,
216 		   struct nvkm_mmu *, bool, u64, u64, void *, u32,
217 		   struct lock_class_key *, const char *, struct nvkm_vmm **);
218 int gm200_vmm_join_(struct nvkm_vmm *, struct nvkm_memory *, u64 base);
219 int gm200_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
220 
221 int gp100_vmm_new_(const struct nvkm_vmm_func *,
222 		   struct nvkm_mmu *, bool, u64, u64, void *, u32,
223 		   struct lock_class_key *, const char *, struct nvkm_vmm **);
224 int gp100_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
225 int gp100_vmm_valid(struct nvkm_vmm *, void *, u32, struct nvkm_vmm_map *);
226 void gp100_vmm_flush(struct nvkm_vmm *, int);
227 int gp100_vmm_mthd(struct nvkm_vmm *, struct nvkm_client *, u32, void *, u32);
228 void gp100_vmm_invalidate_pdb(struct nvkm_vmm *, u64 addr);
229 
230 int gv100_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
231 
232 int nv04_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
233 		 struct lock_class_key *, const char *, struct nvkm_vmm **);
234 int nv41_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
235 		 struct lock_class_key *, const char *, struct nvkm_vmm **);
236 int nv44_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
237 		 struct lock_class_key *, const char *, struct nvkm_vmm **);
238 int nv50_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
239 		 struct lock_class_key *, const char *, struct nvkm_vmm **);
240 int mcp77_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
241 		  struct lock_class_key *, const char *, struct nvkm_vmm **);
242 int g84_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
243 		struct lock_class_key *, const char *, struct nvkm_vmm **);
244 int gf100_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
245 		  struct lock_class_key *, const char *, struct nvkm_vmm **);
246 int gk104_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
247 		  struct lock_class_key *, const char *, struct nvkm_vmm **);
248 int gk20a_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
249 		  struct lock_class_key *, const char *, struct nvkm_vmm **);
250 int gm200_vmm_new_fixed(struct nvkm_mmu *, bool, u64, u64, void *, u32,
251 			struct lock_class_key *, const char *,
252 			struct nvkm_vmm **);
253 int gm200_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
254 		  struct lock_class_key *, const char *,
255 		  struct nvkm_vmm **);
256 int gm20b_vmm_new_fixed(struct nvkm_mmu *, bool, u64, u64, void *, u32,
257 			struct lock_class_key *, const char *,
258 			struct nvkm_vmm **);
259 int gm20b_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
260 		  struct lock_class_key *, const char *,
261 		  struct nvkm_vmm **);
262 int gp100_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
263 		  struct lock_class_key *, const char *,
264 		  struct nvkm_vmm **);
265 int gp10b_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
266 		  struct lock_class_key *, const char *,
267 		  struct nvkm_vmm **);
268 int gv100_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
269 		  struct lock_class_key *, const char *,
270 		  struct nvkm_vmm **);
271 int tu102_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
272 		  struct lock_class_key *, const char *,
273 		  struct nvkm_vmm **);
274 
275 #define VMM_PRINT(l,v,p,f,a...) do {                                           \
276 	struct nvkm_vmm *_vmm = (v);                                           \
277 	if (CONFIG_NOUVEAU_DEBUG >= (l) && _vmm->debug >= (l)) {               \
278 		nvkm_printk_(&_vmm->mmu->subdev, 0, p, "%s: "f"\n",            \
279 			     _vmm->name, ##a);                                 \
280 	}                                                                      \
281 } while(0)
282 #define VMM_DEBUG(v,f,a...) VMM_PRINT(NV_DBG_DEBUG, (v), info, f, ##a)
283 #define VMM_TRACE(v,f,a...) VMM_PRINT(NV_DBG_TRACE, (v), info, f, ##a)
284 #define VMM_SPAM(v,f,a...)  VMM_PRINT(NV_DBG_SPAM , (v),  dbg, f, ##a)
285 
286 #define VMM_MAP_ITER(VMM,PT,PTEI,PTEN,MAP,FILL,BASE,SIZE,NEXT) do {            \
287 	nvkm_kmap((PT)->memory);                                               \
288 	while (PTEN) {                                                         \
289 		u64 _ptes = ((SIZE) - MAP->off) >> MAP->page->shift;           \
290 		u64 _addr = ((BASE) + MAP->off);                               \
291                                                                                \
292 		if (_ptes > PTEN) {                                            \
293 			MAP->off += PTEN << MAP->page->shift;                  \
294 			_ptes = PTEN;                                          \
295 		} else {                                                       \
296 			MAP->off = 0;                                          \
297 			NEXT;                                                  \
298 		}                                                              \
299                                                                                \
300 		VMM_SPAM(VMM, "ITER %08x %08x PTE(s)", PTEI, (u32)_ptes);      \
301                                                                                \
302 		FILL(VMM, PT, PTEI, _ptes, MAP, _addr);                        \
303 		PTEI += _ptes;                                                 \
304 		PTEN -= _ptes;                                                 \
305 	}                                                                      \
306 	nvkm_done((PT)->memory);                                               \
307 } while(0)
308 
309 #define VMM_MAP_ITER_MEM(VMM,PT,PTEI,PTEN,MAP,FILL)                            \
310 	VMM_MAP_ITER(VMM,PT,PTEI,PTEN,MAP,FILL,                                \
311 		     ((u64)MAP->mem->offset << NVKM_RAM_MM_SHIFT),             \
312 		     ((u64)MAP->mem->length << NVKM_RAM_MM_SHIFT),             \
313 		     (MAP->mem = MAP->mem->next))
314 #define VMM_MAP_ITER_DMA(VMM,PT,PTEI,PTEN,MAP,FILL)                            \
315 	VMM_MAP_ITER(VMM,PT,PTEI,PTEN,MAP,FILL,                                \
316 		     *MAP->dma, PAGE_SIZE, MAP->dma++)
317 #define VMM_MAP_ITER_SGL(VMM,PT,PTEI,PTEN,MAP,FILL)                            \
318 	VMM_MAP_ITER(VMM,PT,PTEI,PTEN,MAP,FILL,                                \
319 		     sg_dma_address(MAP->sgl), sg_dma_len(MAP->sgl),           \
320 		     (MAP->sgl = sg_next(MAP->sgl)))
321 
322 #define VMM_FO(m,o,d,c,b) nvkm_fo##b((m)->memory, (o), (d), (c))
323 #define VMM_WO(m,o,d,c,b) nvkm_wo##b((m)->memory, (o), (d))
324 #define VMM_XO(m,v,o,d,c,b,fn,f,a...) do {                                     \
325 	const u32 _pteo = (o); u##b _data = (d);                               \
326 	VMM_SPAM((v), "   %010llx "f, (m)->addr + _pteo, _data, ##a);          \
327 	VMM_##fn((m), (m)->base + _pteo, _data, (c), b);                       \
328 } while(0)
329 
330 #define VMM_WO032(m,v,o,d) VMM_XO((m),(v),(o),(d),  1, 32, WO, "%08x")
331 #define VMM_FO032(m,v,o,d,c)                                                   \
332 	VMM_XO((m),(v),(o),(d),(c), 32, FO, "%08x %08x", (c))
333 
334 #define VMM_WO064(m,v,o,d) VMM_XO((m),(v),(o),(d),  1, 64, WO, "%016llx")
335 #define VMM_FO064(m,v,o,d,c)                                                   \
336 	VMM_XO((m),(v),(o),(d),(c), 64, FO, "%016llx %08x", (c))
337 
338 #define VMM_XO128(m,v,o,lo,hi,c,f,a...) do {                                   \
339 	u32 _pteo = (o), _ptes = (c);                                          \
340 	const u64 _addr = (m)->addr + _pteo;                                   \
341 	VMM_SPAM((v), "   %010llx %016llx%016llx"f, _addr, (hi), (lo), ##a);   \
342 	while (_ptes--) {                                                      \
343 		nvkm_wo64((m)->memory, (m)->base + _pteo + 0, (lo));           \
344 		nvkm_wo64((m)->memory, (m)->base + _pteo + 8, (hi));           \
345 		_pteo += 0x10;                                                 \
346 	}                                                                      \
347 } while(0)
348 
349 #define VMM_WO128(m,v,o,lo,hi) VMM_XO128((m),(v),(o),(lo),(hi), 1, "")
350 #define VMM_FO128(m,v,o,lo,hi,c) do {                                          \
351 	nvkm_kmap((m)->memory);                                                \
352 	VMM_XO128((m),(v),(o),(lo),(hi),(c), " %08x", (c));                    \
353 	nvkm_done((m)->memory);                                                \
354 } while(0)
355 #endif
356