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 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
157struct nvkm_vmm_join {
158 struct nvkm_memory *inst;
159 struct list_head head;
160};
161
162int 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 **);
166struct nvkm_vma *nvkm_vma_new(u64 addr, u64 size);
167struct nvkm_vma *nvkm_vmm_node_search(struct nvkm_vmm *, u64 addr);
168struct nvkm_vma *nvkm_vmm_node_split(struct nvkm_vmm *, struct nvkm_vma *,
169 u64 addr, u64 size);
170int nvkm_vmm_get_locked(struct nvkm_vmm *, bool getref, bool mapref,
171 bool sparse, u8 page, u8 align, u64 size,
172 struct nvkm_vma **pvma);
173void nvkm_vmm_put_locked(struct nvkm_vmm *, struct nvkm_vma *);
174void nvkm_vmm_unmap_locked(struct nvkm_vmm *, struct nvkm_vma *, bool pfn);
175void nvkm_vmm_unmap_region(struct nvkm_vmm *, struct nvkm_vma *);
176
177int nvkm_vmm_raw_get(struct nvkm_vmm *vmm, u64 addr, u64 size, u8 refd);
178void nvkm_vmm_raw_put(struct nvkm_vmm *vmm, u64 addr, u64 size, u8 refd);
179void nvkm_vmm_raw_unmap(struct nvkm_vmm *vmm, u64 addr, u64 size,
180 bool sparse, u8 refd);
181int nvkm_vmm_raw_sparse(struct nvkm_vmm *, u64 addr, u64 size, bool ref);
182
183static inline bool
184nvkm_vmm_in_managed_range(struct nvkm_vmm *vmm, u64 start, u64 size)
185{
186 u64 p_start = vmm->managed.p.addr;
187 u64 p_end = p_start + vmm->managed.p.size;
188 u64 n_start = vmm->managed.n.addr;
189 u64 n_end = n_start + vmm->managed.n.size;
190 u64 end = start + size;
191
192 if (start >= p_start && end <= p_end)
193 return true;
194
195 if (start >= n_start && end <= n_end)
196 return true;
197
198 return false;
199}
200
201#define NVKM_VMM_PFN_ADDR 0xfffffffffffff000ULL
202#define NVKM_VMM_PFN_ADDR_SHIFT 12
203#define NVKM_VMM_PFN_APER 0x00000000000000f0ULL
204#define NVKM_VMM_PFN_HOST 0x0000000000000000ULL
205#define NVKM_VMM_PFN_VRAM 0x0000000000000010ULL
206#define NVKM_VMM_PFN_A 0x0000000000000004ULL
207#define NVKM_VMM_PFN_W 0x0000000000000002ULL
208#define NVKM_VMM_PFN_V 0x0000000000000001ULL
209#define NVKM_VMM_PFN_NONE 0x0000000000000000ULL
210
211int nvkm_vmm_pfn_map(struct nvkm_vmm *, u8 page, u64 addr, u64 size, u64 *pfn);
212int nvkm_vmm_pfn_unmap(struct nvkm_vmm *, u64 addr, u64 size);
213
214struct nvkm_vma *nvkm_vma_tail(struct nvkm_vma *, u64 tail);
215
216int nv04_vmm_new_(const struct nvkm_vmm_func *, struct nvkm_mmu *, u32,
217 bool, u64, u64, void *, u32, struct lock_class_key *,
218 const char *, struct nvkm_vmm **);
219int nv04_vmm_valid(struct nvkm_vmm *, void *, u32, struct nvkm_vmm_map *);
220
221int nv50_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
222void nv50_vmm_part(struct nvkm_vmm *, struct nvkm_memory *);
223int nv50_vmm_valid(struct nvkm_vmm *, void *, u32, struct nvkm_vmm_map *);
224void nv50_vmm_flush(struct nvkm_vmm *, int);
225
226int gf100_vmm_new_(const struct nvkm_vmm_func *, const struct nvkm_vmm_func *,
227 struct nvkm_mmu *, bool, u64, u64, void *, u32,
228 struct lock_class_key *, const char *, struct nvkm_vmm **);
229int gf100_vmm_join_(struct nvkm_vmm *, struct nvkm_memory *, u64 base);
230int gf100_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
231void gf100_vmm_part(struct nvkm_vmm *, struct nvkm_memory *);
232int gf100_vmm_aper(enum nvkm_memory_target);
233int gf100_vmm_valid(struct nvkm_vmm *, void *, u32, struct nvkm_vmm_map *);
234void gf100_vmm_flush(struct nvkm_vmm *, int);
235void gf100_vmm_invalidate(struct nvkm_vmm *, u32 type);
236void gf100_vmm_invalidate_pdb(struct nvkm_vmm *, u64 addr);
237
238int gk20a_vmm_aper(enum nvkm_memory_target);
239
240int gm200_vmm_new_(const struct nvkm_vmm_func *, const struct nvkm_vmm_func *,
241 struct nvkm_mmu *, bool, u64, u64, void *, u32,
242 struct lock_class_key *, const char *, struct nvkm_vmm **);
243int gm200_vmm_join_(struct nvkm_vmm *, struct nvkm_memory *, u64 base);
244int gm200_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
245
246int gp100_vmm_new_(const struct nvkm_vmm_func *,
247 struct nvkm_mmu *, bool, u64, u64, void *, u32,
248 struct lock_class_key *, const char *, struct nvkm_vmm **);
249int gp100_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
250int gp100_vmm_valid(struct nvkm_vmm *, void *, u32, struct nvkm_vmm_map *);
251void gp100_vmm_flush(struct nvkm_vmm *, int);
252int gp100_vmm_mthd(struct nvkm_vmm *, struct nvkm_client *, u32, void *, u32);
253void gp100_vmm_invalidate_pdb(struct nvkm_vmm *, u64 addr);
254
255int gv100_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
256
257int nv04_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
258 struct lock_class_key *, const char *, struct nvkm_vmm **);
259int nv41_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
260 struct lock_class_key *, const char *, struct nvkm_vmm **);
261int nv44_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
262 struct lock_class_key *, const char *, struct nvkm_vmm **);
263int nv50_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
264 struct lock_class_key *, const char *, struct nvkm_vmm **);
265int mcp77_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
266 struct lock_class_key *, const char *, struct nvkm_vmm **);
267int g84_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
268 struct lock_class_key *, const char *, struct nvkm_vmm **);
269int gf100_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
270 struct lock_class_key *, const char *, struct nvkm_vmm **);
271int gk104_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
272 struct lock_class_key *, const char *, struct nvkm_vmm **);
273int gk20a_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
274 struct lock_class_key *, const char *, struct nvkm_vmm **);
275int gm200_vmm_new_fixed(struct nvkm_mmu *, bool, u64, u64, void *, u32,
276 struct lock_class_key *, const char *,
277 struct nvkm_vmm **);
278int gm200_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
279 struct lock_class_key *, const char *,
280 struct nvkm_vmm **);
281int gm20b_vmm_new_fixed(struct nvkm_mmu *, bool, u64, u64, void *, u32,
282 struct lock_class_key *, const char *,
283 struct nvkm_vmm **);
284int gm20b_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
285 struct lock_class_key *, const char *,
286 struct nvkm_vmm **);
287int gp100_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
288 struct lock_class_key *, const char *,
289 struct nvkm_vmm **);
290int gp10b_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
291 struct lock_class_key *, const char *,
292 struct nvkm_vmm **);
293int gv100_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
294 struct lock_class_key *, const char *,
295 struct nvkm_vmm **);
296int tu102_vmm_new(struct nvkm_mmu *, bool, u64, u64, void *, u32,
297 struct lock_class_key *, const char *,
298 struct nvkm_vmm **);
299
300#define VMM_PRINT(l,v,p,f,a...) do { \
301 struct nvkm_vmm *_vmm = (v); \
302 if (CONFIG_NOUVEAU_DEBUG >= (l) && _vmm->debug >= (l)) { \
303 nvkm_printk_(&_vmm->mmu->subdev, 0, p, "%s: "f"\n", \
304 _vmm->name, ##a); \
305 } \
306} while(0)
307#define VMM_DEBUG(v,f,a...) VMM_PRINT(NV_DBG_DEBUG, (v), info, f, ##a)
308#define VMM_TRACE(v,f,a...) VMM_PRINT(NV_DBG_TRACE, (v), info, f, ##a)
309#define VMM_SPAM(v,f,a...) VMM_PRINT(NV_DBG_SPAM , (v), dbg, f, ##a)
310
311#define VMM_MAP_ITER(VMM,PT,PTEI,PTEN,MAP,FILL,BASE,SIZE,NEXT) do { \
312 nvkm_kmap((PT)->memory); \
313 while (PTEN) { \
314 u64 _ptes = ((SIZE) - MAP->off) >> MAP->page->shift; \
315 u64 _addr = ((BASE) + MAP->off); \
316 \
317 if (_ptes > PTEN) { \
318 MAP->off += PTEN << MAP->page->shift; \
319 _ptes = PTEN; \
320 } else { \
321 MAP->off = 0; \
322 NEXT; \
323 } \
324 \
325 VMM_SPAM(VMM, "ITER %08x %08x PTE(s)", PTEI, (u32)_ptes); \
326 \
327 FILL(VMM, PT, PTEI, _ptes, MAP, _addr); \
328 PTEI += _ptes; \
329 PTEN -= _ptes; \
330 } \
331 nvkm_done((PT)->memory); \
332} while(0)
333
334#define VMM_MAP_ITER_MEM(VMM,PT,PTEI,PTEN,MAP,FILL) \
335 VMM_MAP_ITER(VMM,PT,PTEI,PTEN,MAP,FILL, \
336 ((u64)MAP->mem->offset << NVKM_RAM_MM_SHIFT), \
337 ((u64)MAP->mem->length << NVKM_RAM_MM_SHIFT), \
338 (MAP->mem = MAP->mem->next))
339#define VMM_MAP_ITER_DMA(VMM,PT,PTEI,PTEN,MAP,FILL) \
340 VMM_MAP_ITER(VMM,PT,PTEI,PTEN,MAP,FILL, \
341 *MAP->dma, PAGE_SIZE, MAP->dma++)
342#define VMM_MAP_ITER_SGL(VMM,PT,PTEI,PTEN,MAP,FILL) \
343 VMM_MAP_ITER(VMM,PT,PTEI,PTEN,MAP,FILL, \
344 sg_dma_address(MAP->sgl), sg_dma_len(MAP->sgl), \
345 (MAP->sgl = sg_next(MAP->sgl)))
346
347#define VMM_FO(m,o,d,c,b) nvkm_fo##b((m)->memory, (o), (d), (c))
348#define VMM_WO(m,o,d,c,b) nvkm_wo##b((m)->memory, (o), (d))
349#define VMM_XO(m,v,o,d,c,b,fn,f,a...) do { \
350 const u32 _pteo = (o); u##b _data = (d); \
351 VMM_SPAM((v), " %010llx "f, (m)->addr + _pteo, _data, ##a); \
352 VMM_##fn((m), (m)->base + _pteo, _data, (c), b); \
353} while(0)
354
355#define VMM_WO032(m,v,o,d) VMM_XO((m),(v),(o),(d), 1, 32, WO, "%08x")
356#define VMM_FO032(m,v,o,d,c) \
357 VMM_XO((m),(v),(o),(d),(c), 32, FO, "%08x %08x", (c))
358
359#define VMM_WO064(m,v,o,d) VMM_XO((m),(v),(o),(d), 1, 64, WO, "%016llx")
360#define VMM_FO064(m,v,o,d,c) \
361 VMM_XO((m),(v),(o),(d),(c), 64, FO, "%016llx %08x", (c))
362
363#define VMM_XO128(m,v,o,lo,hi,c,f,a...) do { \
364 u32 _pteo = (o), _ptes = (c); \
365 const u64 _addr = (m)->addr + _pteo; \
366 VMM_SPAM((v), " %010llx %016llx%016llx"f, _addr, (hi), (lo), ##a); \
367 while (_ptes--) { \
368 nvkm_wo64((m)->memory, (m)->base + _pteo + 0, (lo)); \
369 nvkm_wo64((m)->memory, (m)->base + _pteo + 8, (hi)); \
370 _pteo += 0x10; \
371 } \
372} while(0)
373
374#define VMM_WO128(m,v,o,lo,hi) VMM_XO128((m),(v),(o),(lo),(hi), 1, "")
375#define VMM_FO128(m,v,o,lo,hi,c) do { \
376 nvkm_kmap((m)->memory); \
377 VMM_XO128((m),(v),(o),(lo),(hi),(c), " %08x", (c)); \
378 nvkm_done((m)->memory); \
379} while(0)
380#endif
381

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