1#ifndef __NVKM_VMM_H__
2#define __NVKM_VMM_H__
3#include "priv.h"
4#include <core/memory.h>
5enum nvkm_memory_target;
6
7struct 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
53typedef void (*nvkm_vmm_pxe_func)(struct nvkm_vmm *,
54 struct nvkm_mmu_pt *, u32 ptei, u32 ptes);
55typedef void (*nvkm_vmm_pde_func)(struct nvkm_vmm *,
56 struct nvkm_vmm_pt *, u32 pdei);
57typedef void (*nvkm_vmm_pte_func)(struct nvkm_vmm *, struct nvkm_mmu_pt *,
58 u32 ptei, u32 ptes, struct nvkm_vmm_map *);
59
60struct 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
76extern const struct nvkm_vmm_desc_func gf100_vmm_pgd;
77void gf100_vmm_pgd_pde(struct nvkm_vmm *, struct nvkm_vmm_pt *, u32);
78extern const struct nvkm_vmm_desc_func gf100_vmm_pgt;
79void gf100_vmm_pgt_unmap(struct nvkm_vmm *, struct nvkm_mmu_pt *, u32, u32);
80void gf100_vmm_pgt_mem(struct nvkm_vmm *, struct nvkm_mmu_pt *, u32, u32,
81 struct nvkm_vmm_map *);
82void gf100_vmm_pgt_dma(struct nvkm_vmm *, struct nvkm_mmu_pt *, u32, u32,
83 struct nvkm_vmm_map *);
84void gf100_vmm_pgt_sgl(struct nvkm_vmm *, struct nvkm_mmu_pt *, u32, u32,
85 struct nvkm_vmm_map *);
86
87void gk104_vmm_lpt_invalid(struct nvkm_vmm *, struct nvkm_mmu_pt *, u32, u32);
88
89struct 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
102extern const struct nvkm_vmm_desc nv50_vmm_desc_12[];
103extern const struct nvkm_vmm_desc nv50_vmm_desc_16[];
104
105extern const struct nvkm_vmm_desc gk104_vmm_desc_16_12[];
106extern const struct nvkm_vmm_desc gk104_vmm_desc_16_16[];
107extern const struct nvkm_vmm_desc gk104_vmm_desc_17_12[];
108extern const struct nvkm_vmm_desc gk104_vmm_desc_17_17[];
109
110extern const struct nvkm_vmm_desc gm200_vmm_desc_16_12[];
111extern const struct nvkm_vmm_desc gm200_vmm_desc_16_16[];
112extern const struct nvkm_vmm_desc gm200_vmm_desc_17_12[];
113extern const struct nvkm_vmm_desc gm200_vmm_desc_17_17[];
114
115extern const struct nvkm_vmm_desc gp100_vmm_desc_12[];
116extern const struct nvkm_vmm_desc gp100_vmm_desc_16[];
117
118struct 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
139struct 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 int (*valid2)(struct nvkm_vmm *, bool ro, bool priv, u8 kind, u8 comp,
147 struct nvkm_vmm_map *);
148 void (*flush)(struct nvkm_vmm *, int depth);
149
150 int (*mthd)(struct nvkm_vmm *, struct nvkm_client *,
151 u32 mthd, void *argv, u32 argc);
152
153 void (*invalidate_pdb)(struct nvkm_vmm *, u64 addr);
154
155 u64 page_block;
156 const struct nvkm_vmm_page page[];
157};
158
159struct nvkm_vmm_join {
160 struct nvkm_memory *inst;
161 struct list_head head;
162};
163
164int nvkm_vmm_new_(const struct nvkm_vmm_func *, struct nvkm_mmu *,
165 u32 pd_header, bool managed, u64 addr, u64 size,
166 struct lock_class_key *, const char *name,
167 struct nvkm_vmm **);
168struct nvkm_vma *nvkm_vma_new(u64 addr, u64 size);
169struct nvkm_vma *nvkm_vmm_node_search(struct nvkm_vmm *, u64 addr);
170struct nvkm_vma *nvkm_vmm_node_split(struct nvkm_vmm *, struct nvkm_vma *,
171 u64 addr, u64 size);
172int 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);
175void nvkm_vmm_put_locked(struct nvkm_vmm *, struct nvkm_vma *);
176void nvkm_vmm_unmap_locked(struct nvkm_vmm *, struct nvkm_vma *, bool pfn);
177void nvkm_vmm_unmap_region(struct nvkm_vmm *, struct nvkm_vma *);
178
179int nvkm_vmm_raw_get(struct nvkm_vmm *vmm, u64 addr, u64 size, u8 refd);
180void nvkm_vmm_raw_put(struct nvkm_vmm *vmm, u64 addr, u64 size, u8 refd);
181void nvkm_vmm_raw_unmap(struct nvkm_vmm *vmm, u64 addr, u64 size,
182 bool sparse, u8 refd);
183int nvkm_vmm_raw_sparse(struct nvkm_vmm *, u64 addr, u64 size, bool ref);
184
185static inline bool
186nvkm_vmm_in_managed_range(struct nvkm_vmm *vmm, u64 start, u64 size)
187{
188 u64 p_start = vmm->managed.p.addr;
189 u64 p_end = p_start + vmm->managed.p.size;
190 u64 n_start = vmm->managed.n.addr;
191 u64 n_end = n_start + vmm->managed.n.size;
192 u64 end = start + size;
193
194 if (start >= p_start && end <= p_end)
195 return true;
196
197 if (start >= n_start && end <= n_end)
198 return true;
199
200 return false;
201}
202
203#define NVKM_VMM_PFN_ADDR 0xfffffffffffff000ULL
204#define NVKM_VMM_PFN_ADDR_SHIFT 12
205#define NVKM_VMM_PFN_APER 0x00000000000000f0ULL
206#define NVKM_VMM_PFN_HOST 0x0000000000000000ULL
207#define NVKM_VMM_PFN_VRAM 0x0000000000000010ULL
208#define NVKM_VMM_PFN_A 0x0000000000000004ULL
209#define NVKM_VMM_PFN_W 0x0000000000000002ULL
210#define NVKM_VMM_PFN_V 0x0000000000000001ULL
211#define NVKM_VMM_PFN_NONE 0x0000000000000000ULL
212
213int nvkm_vmm_pfn_map(struct nvkm_vmm *, u8 page, u64 addr, u64 size, u64 *pfn);
214int nvkm_vmm_pfn_unmap(struct nvkm_vmm *, u64 addr, u64 size);
215
216struct nvkm_vma *nvkm_vma_tail(struct nvkm_vma *, u64 tail);
217
218int nv04_vmm_new_(const struct nvkm_vmm_func *, struct nvkm_mmu *, u32,
219 bool, u64, u64, void *, u32, struct lock_class_key *,
220 const char *, struct nvkm_vmm **);
221int nv04_vmm_valid(struct nvkm_vmm *, void *, u32, struct nvkm_vmm_map *);
222
223int nv50_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
224void nv50_vmm_part(struct nvkm_vmm *, struct nvkm_memory *);
225int nv50_vmm_valid(struct nvkm_vmm *, void *, u32, struct nvkm_vmm_map *);
226void nv50_vmm_flush(struct nvkm_vmm *, int);
227
228int gf100_vmm_new_(const struct nvkm_vmm_func *, const struct nvkm_vmm_func *,
229 struct nvkm_mmu *, bool, u64, u64, void *, u32,
230 struct lock_class_key *, const char *, struct nvkm_vmm **);
231int gf100_vmm_join_(struct nvkm_vmm *, struct nvkm_memory *, u64 base);
232int gf100_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
233void gf100_vmm_part(struct nvkm_vmm *, struct nvkm_memory *);
234int gf100_vmm_aper(enum nvkm_memory_target);
235int gf100_vmm_valid(struct nvkm_vmm *, void *, u32, struct nvkm_vmm_map *);
236void gf100_vmm_flush(struct nvkm_vmm *, int);
237void gf100_vmm_invalidate(struct nvkm_vmm *, u32 type);
238void gf100_vmm_invalidate_pdb(struct nvkm_vmm *, u64 addr);
239
240int gk20a_vmm_aper(enum nvkm_memory_target);
241
242int gm200_vmm_new_(const struct nvkm_vmm_func *, const struct nvkm_vmm_func *,
243 struct nvkm_mmu *, bool, u64, u64, void *, u32,
244 struct lock_class_key *, const char *, struct nvkm_vmm **);
245int gm200_vmm_join_(struct nvkm_vmm *, struct nvkm_memory *, u64 base);
246int gm200_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
247
248int gp100_vmm_new_(const struct nvkm_vmm_func *,
249 struct nvkm_mmu *, bool, u64, u64, void *, u32,
250 struct lock_class_key *, const char *, struct nvkm_vmm **);
251int gp100_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
252int gp100_vmm_valid(struct nvkm_vmm *, void *, u32, struct nvkm_vmm_map *);
253void gp100_vmm_flush(struct nvkm_vmm *, int);
254int gp100_vmm_mthd(struct nvkm_vmm *, struct nvkm_client *, u32, void *, u32);
255void gp100_vmm_invalidate_pdb(struct nvkm_vmm *, u64 addr);
256
257int gv100_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
258
259void tu102_vmm_flush(struct nvkm_vmm *, int depth);
260
261int nv04_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
262 struct lock_class_key *, const char *, struct nvkm_vmm **);
263int nv41_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
264 struct lock_class_key *, const char *, struct nvkm_vmm **);
265int nv44_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
266 struct lock_class_key *, const char *, struct nvkm_vmm **);
267int nv50_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
268 struct lock_class_key *, const char *, struct nvkm_vmm **);
269int mcp77_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
270 struct lock_class_key *, const char *, struct nvkm_vmm **);
271int g84_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
272 struct lock_class_key *, const char *, struct nvkm_vmm **);
273int gf100_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
274 struct lock_class_key *, const char *, struct nvkm_vmm **);
275int gk104_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
276 struct lock_class_key *, const char *, struct nvkm_vmm **);
277int gk20a_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
278 struct lock_class_key *, const char *, struct nvkm_vmm **);
279int gm200_vmm_new_fixed(struct nvkm_mmu *, bool, u64, u64, void *, u32,
280 struct lock_class_key *, const char *,
281 struct nvkm_vmm **);
282int gm200_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
283 struct lock_class_key *, const char *,
284 struct nvkm_vmm **);
285int gm20b_vmm_new_fixed(struct nvkm_mmu *, bool, u64, u64, void *, u32,
286 struct lock_class_key *, const char *,
287 struct nvkm_vmm **);
288int gm20b_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
289 struct lock_class_key *, const char *,
290 struct nvkm_vmm **);
291int gp100_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
292 struct lock_class_key *, const char *,
293 struct nvkm_vmm **);
294int gp10b_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
295 struct lock_class_key *, const char *,
296 struct nvkm_vmm **);
297int gv100_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
298 struct lock_class_key *, const char *,
299 struct nvkm_vmm **);
300int tu102_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
301 struct lock_class_key *, const char *,
302 struct nvkm_vmm **);
303int gh100_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
304 struct lock_class_key *, const char *,
305 struct nvkm_vmm **);
306
307#define VMM_PRINT(l,v,p,f,a...) do { \
308 struct nvkm_vmm *_vmm = (v); \
309 if (CONFIG_NOUVEAU_DEBUG >= (l) && _vmm->debug >= (l)) { \
310 nvkm_printk_(&_vmm->mmu->subdev, 0, p, "%s: "f"\n", \
311 _vmm->name, ##a); \
312 } \
313} while(0)
314#define VMM_DEBUG(v,f,a...) VMM_PRINT(NV_DBG_DEBUG, (v), info, f, ##a)
315#define VMM_TRACE(v,f,a...) VMM_PRINT(NV_DBG_TRACE, (v), info, f, ##a)
316#define VMM_SPAM(v,f,a...) VMM_PRINT(NV_DBG_SPAM , (v), dbg, f, ##a)
317
318#define VMM_MAP_ITER(VMM,PT,PTEI,PTEN,MAP,FILL,BASE,SIZE,NEXT) do { \
319 nvkm_kmap((PT)->memory); \
320 while (PTEN) { \
321 u64 _ptes = ((SIZE) - MAP->off) >> MAP->page->shift; \
322 u64 _addr = ((BASE) + MAP->off); \
323 \
324 if (_ptes > PTEN) { \
325 MAP->off += PTEN << MAP->page->shift; \
326 _ptes = PTEN; \
327 } else { \
328 MAP->off = 0; \
329 NEXT; \
330 } \
331 \
332 VMM_SPAM(VMM, "ITER %08x %08x PTE(s)", PTEI, (u32)_ptes); \
333 \
334 FILL(VMM, PT, PTEI, _ptes, MAP, _addr); \
335 PTEI += _ptes; \
336 PTEN -= _ptes; \
337 } \
338 nvkm_done((PT)->memory); \
339} while(0)
340
341#define VMM_MAP_ITER_MEM(VMM,PT,PTEI,PTEN,MAP,FILL) \
342 VMM_MAP_ITER(VMM,PT,PTEI,PTEN,MAP,FILL, \
343 ((u64)MAP->mem->offset << NVKM_RAM_MM_SHIFT), \
344 ((u64)MAP->mem->length << NVKM_RAM_MM_SHIFT), \
345 (MAP->mem = MAP->mem->next))
346#define VMM_MAP_ITER_DMA(VMM,PT,PTEI,PTEN,MAP,FILL) \
347 VMM_MAP_ITER(VMM,PT,PTEI,PTEN,MAP,FILL, \
348 *MAP->dma, PAGE_SIZE, MAP->dma++)
349#define VMM_MAP_ITER_SGL(VMM,PT,PTEI,PTEN,MAP,FILL) \
350 VMM_MAP_ITER(VMM,PT,PTEI,PTEN,MAP,FILL, \
351 sg_dma_address(MAP->sgl), sg_dma_len(MAP->sgl), \
352 (MAP->sgl = sg_next(MAP->sgl)))
353
354#define VMM_FO(m,o,d,c,b) nvkm_fo##b((m)->memory, (o), (d), (c))
355#define VMM_WO(m,o,d,c,b) nvkm_wo##b((m)->memory, (o), (d))
356#define VMM_XO(m,v,o,d,c,b,fn,f,a...) do { \
357 const u32 _pteo = (o); u##b _data = (d); \
358 VMM_SPAM((v), " %010llx "f, (m)->addr + _pteo, _data, ##a); \
359 VMM_##fn((m), (m)->base + _pteo, _data, (c), b); \
360} while(0)
361
362#define VMM_WO032(m,v,o,d) VMM_XO((m),(v),(o),(d), 1, 32, WO, "%08x")
363#define VMM_FO032(m,v,o,d,c) \
364 VMM_XO((m),(v),(o),(d),(c), 32, FO, "%08x %08x", (c))
365
366#define VMM_WO064(m,v,o,d) VMM_XO((m),(v),(o),(d), 1, 64, WO, "%016llx")
367#define VMM_FO064(m,v,o,d,c) \
368 VMM_XO((m),(v),(o),(d),(c), 64, FO, "%016llx %08x", (c))
369
370#define VMM_XO128(m,v,o,lo,hi,c,f,a...) do { \
371 u32 _pteo = (o), _ptes = (c); \
372 const u64 _addr = (m)->addr + _pteo; \
373 VMM_SPAM((v), " %010llx %016llx%016llx"f, _addr, (hi), (lo), ##a); \
374 while (_ptes--) { \
375 nvkm_wo64((m)->memory, (m)->base + _pteo + 0, (lo)); \
376 nvkm_wo64((m)->memory, (m)->base + _pteo + 8, (hi)); \
377 _pteo += 0x10; \
378 } \
379} while(0)
380
381#define VMM_WO128(m,v,o,lo,hi) VMM_XO128((m),(v),(o),(lo),(hi), 1, "")
382#define VMM_FO128(m,v,o,lo,hi,c) do { \
383 nvkm_kmap((m)->memory); \
384 VMM_XO128((m),(v),(o),(lo),(hi),(c), " %08x", (c)); \
385 nvkm_done((m)->memory); \
386} while(0)
387#endif
388

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source code of linux/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h