src/gallium/drivers/nouveau/codegen/nv50_ir_target.h

   1 /*
   2  * Copyright 2011 Christoph Bumiller
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  */
  22
  23 #ifndef __NV50_IR_TARGET_H__
  24 #define __NV50_IR_TARGET_H__
  25
  26 #include "codegen/nv50_ir.h"
  27
  28 namespace nv50_ir {
  29
  30 struct RelocInfo;
  31
  32 struct RelocEntry
  33 {
  34    enum Type
  35    {
  36       TYPE_CODE,
  37       TYPE_BUILTIN,
  38       TYPE_DATA
  39    };
  40
  41    uint32_t data;
  42    uint32_t mask;
  43    uint32_t offset;
  44    int8_t bitPos;
  45    Type type;
  46
  47    inline void apply(uint32_t *binary, const RelocInfo *info) const;
  48 };
  49
  50 struct RelocInfo
  51 {
  52    uint32_t codePos;
  53    uint32_t libPos;
  54    uint32_t dataPos;
  55
  56    uint32_t count;
  57
  58    RelocEntry entry[0];
  59 };
  60
  61 struct FixupData {
  62    FixupData(bool force, bool flat) :
  63       force_persample_interp(force), flatshade(flat) {}
  64    bool force_persample_interp;
  65    bool flatshade;
  66 };
  67
  68 struct FixupEntry;
  69 typedef void (*FixupApply)(const FixupEntry*, uint32_t*, const FixupData&);
  70
  71 struct FixupEntry
  72 {
  73    FixupEntry(FixupApply apply, int ipa, int reg, int loc) :
  74       apply(apply), ipa(ipa), reg(reg), loc(loc) {}
  75
  76    FixupApply apply;
  77    union {
  78       struct {
  79          uint32_t ipa:4; // SC mode used to identify colors
  80          uint32_t reg:8; // The reg used for perspective division
  81          uint32_t loc:20; // Let's hope we don't have more than 1M-sized shaders
  82       };
  83       uint32_t val;
  84    };
  85 };
  86
  87 struct FixupInfo
  88 {
  89    uint32_t count;
  90    FixupEntry entry[0];
  91 };
  92
  93 class CodeEmitter
  94 {
  95 public:
  96    CodeEmitter(const Target *);
  97    virtual ~CodeEmitter() { }
  98
  99    // returns whether the instruction was encodable and written
 100    virtual bool emitInstruction(Instruction *) = 0;
 101
 102    virtual uint32_t getMinEncodingSize(const Instruction *) const = 0;
 103
 104    void setCodeLocation(void *, uint32_t size);
 105    inline void *getCodeLocation() const { return code; }
 106    inline uint32_t getCodeSize() const { return codeSize; }
 107
 108    bool addReloc(RelocEntry::Type, int w, uint32_t data, uint32_t m,
 109                  int s);
 110
 111    inline void *getRelocInfo() const { return relocInfo; }
 112
 113    bool addInterp(int ipa, int reg, FixupApply apply);
 114    inline void *getFixupInfo() const { return fixupInfo; }
 115
 116    virtual void prepareEmission(Program *);
 117    virtual void prepareEmission(Function *);
 118    virtual void prepareEmission(BasicBlock *);
 119
 120    void printBinary() const;
 121
 122 protected:
 123    const Target *targ;
 124
 125    uint32_t *code;
 126    uint32_t codeSize;
 127    uint32_t codeSizeLimit;
 128
 129    RelocInfo *relocInfo;
 130    FixupInfo *fixupInfo;
 131 };
 132
 133
 134 enum OpClass
 135 {
 136    OPCLASS_MOVE          = 0,
 137    OPCLASS_LOAD          = 1,
 138    OPCLASS_STORE         = 2,
 139    OPCLASS_ARITH         = 3,
 140    OPCLASS_SHIFT         = 4,
 141    OPCLASS_SFU           = 5,
 142    OPCLASS_LOGIC         = 6,
 143    OPCLASS_COMPARE       = 7,
 144    OPCLASS_CONVERT       = 8,
 145    OPCLASS_ATOMIC        = 9,
 146    OPCLASS_TEXTURE       = 10,
 147    OPCLASS_SURFACE       = 11,
 148    OPCLASS_FLOW          = 12,
 149    OPCLASS_PSEUDO        = 14,
 150    OPCLASS_VECTOR        = 15,
 151    OPCLASS_BITFIELD      = 16,
 152    OPCLASS_CONTROL       = 17,
 153    OPCLASS_OTHER         = 18
 154 };
 155
 156 class Target
 157 {
 158 public:
 159    Target(bool m, bool j, bool s) : hasJoin(m), joinAnterior(j), hasSWSched(s) { }
 160    virtual ~Target() { }
 161
 162    static Target *create(uint32_t chipset);
 163    static void destroy(Target *);
 164
 165    // 0x50 and 0x84 to 0xaf for nv50
 166    // 0xc0 to 0xdf for nvc0
 167    inline uint32_t getChipset() const { return chipset; }
 168
 169    virtual CodeEmitter *getCodeEmitter(Program::Type) = 0;
 170
 171    // Drivers should upload this so we can use it from all programs.
 172    // The address chosen is supplied to the relocation routine.
 173    virtual void getBuiltinCode(const uint32_t **code, uint32_t *size) const = 0;
 174
 175    virtual void parseDriverInfo(const struct nv50_ir_prog_info *info) { }
 176
 177    virtual bool runLegalizePass(Program *, CGStage stage) const = 0;
 178
 179 public:
 180    struct OpInfo
 181    {
 182       OpInfo *variants;
 183       operation op;
 184       uint16_t srcTypes;
 185       uint16_t dstTypes;
 186       uint32_t immdBits;
 187       uint8_t srcNr;
 188       uint8_t srcMods[3];
 189       uint8_t dstMods;
 190       uint16_t srcFiles[3];
 191       uint16_t dstFiles;
 192       unsigned int minEncSize  : 4;
 193       unsigned int vector      : 1;
 194       unsigned int predicate   : 1;
 195       unsigned int commutative : 1;
 196       unsigned int pseudo      : 1;
 197       unsigned int flow        : 1;
 198       unsigned int hasDest     : 1;
 199       unsigned int terminator  : 1;
 200    };
 201
 202    inline const OpInfo& getOpInfo(const Instruction *) const;
 203    inline const OpInfo& getOpInfo(const operation) const;
 204
 205    inline DataFile nativeFile(DataFile f) const;
 206
 207    virtual bool insnCanLoad(const Instruction *insn, int s,
 208                             const Instruction *ld) const = 0;
 209    virtual bool insnCanLoadOffset(const Instruction *insn, int s,
 210                                   int offset) const = 0;
 211    virtual bool isOpSupported(operation, DataType) const = 0;
 212    virtual bool isAccessSupported(DataFile, DataType) const = 0;
 213    virtual bool isModSupported(const Instruction *,
 214                                int s, Modifier) const = 0;
 215    virtual bool isSatSupported(const Instruction *) const = 0;
 216    virtual bool isPostMultiplySupported(operation op, float f,
 217                                         int& e) const { return false; }
 218    virtual bool mayPredicate(const Instruction *,
 219                              const Value *) const = 0;
 220
 221    // whether @insn can be issued together with @next (order matters)
 222    virtual bool canDualIssue(const Instruction *insn,
 223                              const Instruction *next) const { return false; }
 224    virtual int getLatency(const Instruction *) const { return 1; }
 225    virtual int getThroughput(const Instruction *) const { return 1; }
 226
 227    virtual unsigned int getFileSize(DataFile) const = 0;
 228    virtual unsigned int getFileUnit(DataFile) const = 0;
 229
 230    virtual uint32_t getSVAddress(DataFile, const Symbol *) const = 0;
 231
 232 public:
 233    const bool hasJoin;      // true if instructions have a join modifier
 234    const bool joinAnterior; // true if join is executed before the op
 235    const bool hasSWSched;   // true if code should provide scheduling data
 236
 237    static const uint8_t operationSrcNr[];
 238    static const OpClass operationClass[];
 239
 240    static inline uint8_t getOpSrcNr(operation op)
 241    {
 242       return operationSrcNr[op];
 243    }
 244    static inline OpClass getOpClass(operation op)
 245    {
 246       return operationClass[op];
 247    }
 248
 249 protected:
 250    uint32_t chipset;
 251
 252    DataFile nativeFileMap[DATA_FILE_COUNT];
 253
 254    OpInfo opInfo[OP_LAST + 1];
 255 };
 256
 257 const Target::OpInfo& Target::getOpInfo(const Instruction *insn) const
 258 {
 259    return opInfo[MIN2(insn->op, OP_LAST)];
 260 }
 261
 262 const Target::OpInfo& Target::getOpInfo(const operation op) const
 263 {
 264    return opInfo[op];
 265 }
 266
 267 inline DataFile Target::nativeFile(DataFile f) const
 268 {
 269    return nativeFileMap[f];
 270 }
 271
 272 } // namespace nv50_ir
 273
 274 #endif // __NV50_IR_TARGET_H__