LXR linux/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h

   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
  72extern const struct nvkm_vmm_desc_func gf100_vmm_pgd;
  73void gf100_vmm_pgd_pde(struct nvkm_vmm *, struct nvkm_vmm_pt *, u32);
  74extern const struct nvkm_vmm_desc_func gf100_vmm_pgt;
  75void gf100_vmm_pgt_unmap(struct nvkm_vmm *, struct nvkm_mmu_pt *, u32, u32);
  76void gf100_vmm_pgt_mem(struct nvkm_vmm *, struct nvkm_mmu_pt *, u32, u32,
  77                       struct nvkm_vmm_map *);
  78void gf100_vmm_pgt_dma(struct nvkm_vmm *, struct nvkm_mmu_pt *, u32, u32,
  79                       struct nvkm_vmm_map *);
  80void gf100_vmm_pgt_sgl(struct nvkm_vmm *, struct nvkm_mmu_pt *, u32, u32,
  81                       struct nvkm_vmm_map *);
  82
  83void gk104_vmm_lpt_invalid(struct nvkm_vmm *, struct nvkm_mmu_pt *, u32, u32);
  84
  85struct nvkm_vmm_desc {
  86        enum {
  87                PGD,
  88                PGT,
  89                SPT,
  90                LPT,
  91        } type;
  92        u8 bits;        /* VMA bits covered by PT. */
  93        u8 size;        /* Bytes-per-PTE. */
  94        u32 align;      /* PT address alignment. */
  95        const struct nvkm_vmm_desc_func *func;
  96};
  97
  98extern const struct nvkm_vmm_desc nv50_vmm_desc_12[];
  99extern const struct nvkm_vmm_desc nv50_vmm_desc_16[];
 100
 101extern const struct nvkm_vmm_desc gk104_vmm_desc_16_12[];
 102extern const struct nvkm_vmm_desc gk104_vmm_desc_16_16[];
 103extern const struct nvkm_vmm_desc gk104_vmm_desc_17_12[];
 104extern const struct nvkm_vmm_desc gk104_vmm_desc_17_17[];
 105
 106extern const struct nvkm_vmm_desc gm200_vmm_desc_16_12[];
 107extern const struct nvkm_vmm_desc gm200_vmm_desc_16_16[];
 108extern const struct nvkm_vmm_desc gm200_vmm_desc_17_12[];
 109extern const struct nvkm_vmm_desc gm200_vmm_desc_17_17[];
 110
 111extern const struct nvkm_vmm_desc gp100_vmm_desc_12[];
 112extern const struct nvkm_vmm_desc gp100_vmm_desc_16[];
 113
 114struct nvkm_vmm_page {
 115        u8 shift;
 116        const struct nvkm_vmm_desc *desc;
 117#define NVKM_VMM_PAGE_SPARSE                                               0x01
 118#define NVKM_VMM_PAGE_VRAM                                                 0x02
 119#define NVKM_VMM_PAGE_HOST                                                 0x04
 120#define NVKM_VMM_PAGE_COMP                                                 0x08
 121#define NVKM_VMM_PAGE_Sxxx                                (NVKM_VMM_PAGE_SPARSE)
 122#define NVKM_VMM_PAGE_xVxx                                  (NVKM_VMM_PAGE_VRAM)
 123#define NVKM_VMM_PAGE_SVxx             (NVKM_VMM_PAGE_Sxxx | NVKM_VMM_PAGE_VRAM)
 124#define NVKM_VMM_PAGE_xxHx                                  (NVKM_VMM_PAGE_HOST)
 125#define NVKM_VMM_PAGE_SxHx             (NVKM_VMM_PAGE_Sxxx | NVKM_VMM_PAGE_HOST)
 126#define NVKM_VMM_PAGE_xVHx             (NVKM_VMM_PAGE_xVxx | NVKM_VMM_PAGE_HOST)
 127#define NVKM_VMM_PAGE_SVHx             (NVKM_VMM_PAGE_SVxx | NVKM_VMM_PAGE_HOST)
 128#define NVKM_VMM_PAGE_xVxC             (NVKM_VMM_PAGE_xVxx | NVKM_VMM_PAGE_COMP)
 129#define NVKM_VMM_PAGE_SVxC             (NVKM_VMM_PAGE_SVxx | NVKM_VMM_PAGE_COMP)
 130#define NVKM_VMM_PAGE_xxHC             (NVKM_VMM_PAGE_xxHx | NVKM_VMM_PAGE_COMP)
 131#define NVKM_VMM_PAGE_SxHC             (NVKM_VMM_PAGE_SxHx | NVKM_VMM_PAGE_COMP)
 132        u8 type;
 133};
 134
 135struct nvkm_vmm_func {
 136        int (*join)(struct nvkm_vmm *, struct nvkm_memory *inst);
 137        void (*part)(struct nvkm_vmm *, struct nvkm_memory *inst);
 138
 139        int (*aper)(enum nvkm_memory_target);
 140        int (*valid)(struct nvkm_vmm *, void *argv, u32 argc,
 141                     struct nvkm_vmm_map *);
 142        void (*flush)(struct nvkm_vmm *, int depth);
 143
 144        u64 page_block;
 145        const struct nvkm_vmm_page page[];
 146};
 147
 148struct nvkm_vmm_join {
 149        struct nvkm_memory *inst;
 150        struct list_head head;
 151};
 152
 153int nvkm_vmm_new_(const struct nvkm_vmm_func *, struct nvkm_mmu *,
 154                  u32 pd_header, u64 addr, u64 size, struct lock_class_key *,
 155                  const char *name, struct nvkm_vmm **);
 156int nvkm_vmm_ctor(const struct nvkm_vmm_func *, struct nvkm_mmu *,
 157                  u32 pd_header, u64 addr, u64 size, struct lock_class_key *,
 158                  const char *name, struct nvkm_vmm *);
 159struct nvkm_vma *nvkm_vmm_node_search(struct nvkm_vmm *, u64 addr);
 160int nvkm_vmm_get_locked(struct nvkm_vmm *, bool getref, bool mapref,
 161                        bool sparse, u8 page, u8 align, u64 size,
 162                        struct nvkm_vma **pvma);
 163void nvkm_vmm_put_locked(struct nvkm_vmm *, struct nvkm_vma *);
 164void nvkm_vmm_unmap_locked(struct nvkm_vmm *, struct nvkm_vma *);
 165void nvkm_vmm_unmap_region(struct nvkm_vmm *vmm, struct nvkm_vma *vma);
 166
 167struct nvkm_vma *nvkm_vma_tail(struct nvkm_vma *, u64 tail);
 168void nvkm_vmm_node_insert(struct nvkm_vmm *, struct nvkm_vma *);
 169
 170int nv04_vmm_new_(const struct nvkm_vmm_func *, struct nvkm_mmu *, u32,
 171                  u64, u64, void *, u32, struct lock_class_key *,
 172                  const char *, struct nvkm_vmm **);
 173int nv04_vmm_valid(struct nvkm_vmm *, void *, u32, struct nvkm_vmm_map *);
 174
 175int nv50_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
 176void nv50_vmm_part(struct nvkm_vmm *, struct nvkm_memory *);
 177int nv50_vmm_valid(struct nvkm_vmm *, void *, u32, struct nvkm_vmm_map *);
 178void nv50_vmm_flush(struct nvkm_vmm *, int);
 179
 180int gf100_vmm_new_(const struct nvkm_vmm_func *, const struct nvkm_vmm_func *,
 181                   struct nvkm_mmu *, u64, u64, void *, u32,
 182                   struct lock_class_key *, const char *, struct nvkm_vmm **);
 183int gf100_vmm_join_(struct nvkm_vmm *, struct nvkm_memory *, u64 base);
 184int gf100_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
 185void gf100_vmm_part(struct nvkm_vmm *, struct nvkm_memory *);
 186int gf100_vmm_aper(enum nvkm_memory_target);
 187int gf100_vmm_valid(struct nvkm_vmm *, void *, u32, struct nvkm_vmm_map *);
 188void gf100_vmm_flush_(struct nvkm_vmm *, int);
 189void gf100_vmm_flush(struct nvkm_vmm *, int);
 190
 191int gk20a_vmm_aper(enum nvkm_memory_target);
 192
 193int gm200_vmm_new_(const struct nvkm_vmm_func *, const struct nvkm_vmm_func *,
 194                   struct nvkm_mmu *, u64, u64, void *, u32,
 195                   struct lock_class_key *, const char *, struct nvkm_vmm **);
 196int gm200_vmm_join_(struct nvkm_vmm *, struct nvkm_memory *, u64 base);
 197int gm200_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
 198
 199int gp100_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
 200int gp100_vmm_valid(struct nvkm_vmm *, void *, u32, struct nvkm_vmm_map *);
 201void gp100_vmm_flush(struct nvkm_vmm *, int);
 202
 203int nv04_vmm_new(struct nvkm_mmu *, u64, u64, void *, u32,
 204                 struct lock_class_key *, const char *, struct nvkm_vmm **);
 205int nv41_vmm_new(struct nvkm_mmu *, u64, u64, void *, u32,
 206                 struct lock_class_key *, const char *, struct nvkm_vmm **);
 207int nv44_vmm_new(struct nvkm_mmu *, u64, u64, void *, u32,
 208                 struct lock_class_key *, const char *, struct nvkm_vmm **);
 209int nv50_vmm_new(struct nvkm_mmu *, u64, u64, void *, u32,
 210                 struct lock_class_key *, const char *, struct nvkm_vmm **);
 211int mcp77_vmm_new(struct nvkm_mmu *, u64, u64, void *, u32,
 212                  struct lock_class_key *, const char *, struct nvkm_vmm **);
 213int g84_vmm_new(struct nvkm_mmu *, u64, u64, void *, u32,
 214                struct lock_class_key *, const char *, struct nvkm_vmm **);
 215int gf100_vmm_new(struct nvkm_mmu *, u64, u64, void *, u32,
 216                  struct lock_class_key *, const char *, struct nvkm_vmm **);
 217int gk104_vmm_new(struct nvkm_mmu *, u64, u64, void *, u32,
 218                  struct lock_class_key *, const char *, struct nvkm_vmm **);
 219int gk20a_vmm_new(struct nvkm_mmu *, u64, u64, void *, u32,
 220                  struct lock_class_key *, const char *, struct nvkm_vmm **);
 221int gm200_vmm_new_fixed(struct nvkm_mmu *, u64, u64, void *, u32,
 222                        struct lock_class_key *, const char *,
 223                        struct nvkm_vmm **);
 224int gm200_vmm_new(struct nvkm_mmu *, u64, u64, void *, u32,
 225                  struct lock_class_key *, const char *,
 226                  struct nvkm_vmm **);
 227int gm20b_vmm_new_fixed(struct nvkm_mmu *, u64, u64, void *, u32,
 228                        struct lock_class_key *, const char *,
 229                        struct nvkm_vmm **);
 230int gm20b_vmm_new(struct nvkm_mmu *, u64, u64, void *, u32,
 231                  struct lock_class_key *, const char *,
 232                  struct nvkm_vmm **);
 233int gp100_vmm_new(struct nvkm_mmu *, u64, u64, void *, u32,
 234                  struct lock_class_key *, const char *,
 235                  struct nvkm_vmm **);
 236int gp10b_vmm_new(struct nvkm_mmu *, u64, u64, void *, u32,
 237                  struct lock_class_key *, const char *,
 238                  struct nvkm_vmm **);
 239
 240#define VMM_PRINT(l,v,p,f,a...) do {                                           \
 241        struct nvkm_vmm *_vmm = (v);                                           \
 242        if (CONFIG_NOUVEAU_DEBUG >= (l) && _vmm->debug >= (l)) {               \
 243                nvkm_printk_(&_vmm->mmu->subdev, 0, p, "%s: "f"\n",            \
 244                             _vmm->name, ##a);                                 \
 245        }                                                                      \
 246} while(0)
 247#define VMM_DEBUG(v,f,a...) VMM_PRINT(NV_DBG_DEBUG, (v), info, f, ##a)
 248#define VMM_TRACE(v,f,a...) VMM_PRINT(NV_DBG_TRACE, (v), info, f, ##a)
 249#define VMM_SPAM(v,f,a...)  VMM_PRINT(NV_DBG_SPAM , (v),  dbg, f, ##a)
 250
 251#define VMM_MAP_ITER(VMM,PT,PTEI,PTEN,MAP,FILL,BASE,SIZE,NEXT) do {            \
 252        nvkm_kmap((PT)->memory);                                               \
 253        while (PTEN) {                                                         \
 254                u64 _ptes = ((SIZE) - MAP->off) >> MAP->page->shift;           \
 255                u64 _addr = ((BASE) + MAP->off);                               \
 256                                                                               \
 257                if (_ptes > PTEN) {                                            \
 258                        MAP->off += PTEN << MAP->page->shift;                  \
 259                        _ptes = PTEN;                                          \
 260                } else {                                                       \
 261                        MAP->off = 0;                                          \
 262                        NEXT;                                                  \
 263                }                                                              \
 264                                                                               \
 265                VMM_SPAM(VMM, "ITER %08x %08x PTE(s)", PTEI, (u32)_ptes);      \
 266                                                                               \
 267                FILL(VMM, PT, PTEI, _ptes, MAP, _addr);                        \
 268                PTEI += _ptes;                                                 \
 269                PTEN -= _ptes;                                                 \
 270        };                                                                     \
 271        nvkm_done((PT)->memory);                                               \
 272} while(0)
 273
 274#define VMM_MAP_ITER_MEM(VMM,PT,PTEI,PTEN,MAP,FILL)                            \
 275        VMM_MAP_ITER(VMM,PT,PTEI,PTEN,MAP,FILL,                                \
 276                     ((u64)MAP->mem->offset << NVKM_RAM_MM_SHIFT),             \
 277                     ((u64)MAP->mem->length << NVKM_RAM_MM_SHIFT),             \
 278                     (MAP->mem = MAP->mem->next))
 279#define VMM_MAP_ITER_DMA(VMM,PT,PTEI,PTEN,MAP,FILL)                            \
 280        VMM_MAP_ITER(VMM,PT,PTEI,PTEN,MAP,FILL,                                \
 281                     *MAP->dma, PAGE_SIZE, MAP->dma++)
 282#define VMM_MAP_ITER_SGL(VMM,PT,PTEI,PTEN,MAP,FILL)                            \
 283        VMM_MAP_ITER(VMM,PT,PTEI,PTEN,MAP,FILL,                                \
 284                     sg_dma_address(MAP->sgl), sg_dma_len(MAP->sgl),           \
 285                     (MAP->sgl = sg_next(MAP->sgl)))
 286
 287#define VMM_FO(m,o,d,c,b) nvkm_fo##b((m)->memory, (o), (d), (c))
 288#define VMM_WO(m,o,d,c,b) nvkm_wo##b((m)->memory, (o), (d))
 289#define VMM_XO(m,v,o,d,c,b,fn,f,a...) do {                                     \
 290        const u32 _pteo = (o); u##b _data = (d);                               \
 291        VMM_SPAM((v), "   %010llx "f, (m)->addr + _pteo, _data, ##a);          \
 292        VMM_##fn((m), (m)->base + _pteo, _data, (c), b);                       \
 293} while(0)
 294
 295#define VMM_WO032(m,v,o,d) VMM_XO((m),(v),(o),(d),  1, 32, WO, "%08x")
 296#define VMM_FO032(m,v,o,d,c)                                                   \
 297        VMM_XO((m),(v),(o),(d),(c), 32, FO, "%08x %08x", (c))
 298
 299#define VMM_WO064(m,v,o,d) VMM_XO((m),(v),(o),(d),  1, 64, WO, "%016llx")
 300#define VMM_FO064(m,v,o,d,c)                                                   \
 301        VMM_XO((m),(v),(o),(d),(c), 64, FO, "%016llx %08x", (c))
 302
 303#define VMM_XO128(m,v,o,lo,hi,c,f,a...) do {                                   \
 304        u32 _pteo = (o), _ptes = (c);                                          \
 305        const u64 _addr = (m)->addr + _pteo;                                   \
 306        VMM_SPAM((v), "   %010llx %016llx%016llx"f, _addr, (hi), (lo), ##a);   \
 307        while (_ptes--) {                                                      \
 308                nvkm_wo64((m)->memory, (m)->base + _pteo + 0, (lo));           \
 309                nvkm_wo64((m)->memory, (m)->base + _pteo + 8, (hi));           \
 310                _pteo += 0x10;                                                 \
 311        }                                                                      \
 312} while(0)
 313
 314#define VMM_WO128(m,v,o,lo,hi) VMM_XO128((m),(v),(o),(lo),(hi), 1, "")
 315#define VMM_FO128(m,v,o,lo,hi,c) do {                                          \
 316        nvkm_kmap((m)->memory);                                                \
 317        VMM_XO128((m),(v),(o),(lo),(hi),(c), " %08x", (c));                    \
 318        nvkm_done((m)->memory);                                                \
 319} while(0)
 320#endif
 321