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 {
FixupDataFixupData62 FixupData(bool force, bool flat, uint8_t alphatest) :
63 force_persample_interp(force), flatshade(flat), alphatest(alphatest) {}
64 bool force_persample_interp;
65 bool flatshade;
66 uint8_t alphatest;
67 };
68
69 struct FixupEntry;
70 typedef void (*FixupApply)(const FixupEntry*, uint32_t*, const FixupData&);
71
72 struct FixupEntry
73 {
FixupEntryFixupEntry74 FixupEntry(FixupApply apply, int ipa, int reg, int loc) :
75 apply(apply), ipa(ipa), reg(reg), loc(loc) {}
76
77 FixupApply apply;
78 union {
79 struct {
80 uint32_t ipa:4; // SC mode used to identify colors
81 uint32_t reg:8; // The reg used for perspective division
82 uint32_t loc:20; // Let's hope we don't have more than 1M-sized shaders
83 };
84 uint32_t val;
85 };
86 };
87
88 struct FixupInfo
89 {
90 uint32_t count;
91 FixupEntry entry[0];
92 };
93
94 class CodeEmitter
95 {
96 public:
97 CodeEmitter(const Target *);
~CodeEmitter()98 virtual ~CodeEmitter() { }
99
100 // returns whether the instruction was encodable and written
101 virtual bool emitInstruction(Instruction *) = 0;
102
103 virtual uint32_t getMinEncodingSize(const Instruction *) const = 0;
104
105 void setCodeLocation(void *, uint32_t size);
getCodeLocation()106 inline void *getCodeLocation() const { return code; }
getCodeSize()107 inline uint32_t getCodeSize() const { return codeSize; }
108
109 bool addReloc(RelocEntry::Type, int w, uint32_t data, uint32_t m,
110 int s);
111
getRelocInfo()112 inline void *getRelocInfo() const { return relocInfo; }
113
114 bool addInterp(int ipa, int reg, FixupApply apply);
getFixupInfo()115 inline void *getFixupInfo() const { return fixupInfo; }
116
117 virtual void prepareEmission(Program *);
118 virtual void prepareEmission(Function *);
119 virtual void prepareEmission(BasicBlock *);
120
121 void printBinary() const;
122
123 protected:
124 const Target *targ;
125
126 uint32_t *code;
127 uint32_t codeSize;
128 uint32_t codeSizeLimit;
129
130 RelocInfo *relocInfo;
131 FixupInfo *fixupInfo;
132 };
133
134
135 enum OpClass
136 {
137 OPCLASS_MOVE = 0,
138 OPCLASS_LOAD = 1,
139 OPCLASS_STORE = 2,
140 OPCLASS_ARITH = 3,
141 OPCLASS_SHIFT = 4,
142 OPCLASS_SFU = 5,
143 OPCLASS_LOGIC = 6,
144 OPCLASS_COMPARE = 7,
145 OPCLASS_CONVERT = 8,
146 OPCLASS_ATOMIC = 9,
147 OPCLASS_TEXTURE = 10,
148 OPCLASS_SURFACE = 11,
149 OPCLASS_FLOW = 12,
150 OPCLASS_PSEUDO = 14,
151 OPCLASS_VECTOR = 15,
152 OPCLASS_BITFIELD = 16,
153 OPCLASS_CONTROL = 17,
154 OPCLASS_OTHER = 18
155 };
156
157 class Target
158 {
159 public:
Target(bool m,bool j,bool s)160 Target(bool m, bool j, bool s) : hasJoin(m), joinAnterior(j), hasSWSched(s) { }
~Target()161 virtual ~Target() { }
162
163 static Target *create(uint32_t chipset);
164 static void destroy(Target *);
165
166 // 0x50 and 0x84 to 0xaf for nv50
167 // 0xc0 to 0xdf for nvc0
getChipset()168 inline uint32_t getChipset() const { return chipset; }
169
170 virtual CodeEmitter *getCodeEmitter(Program::Type) = 0;
171
172 // Drivers should upload this so we can use it from all programs.
173 // The address chosen is supplied to the relocation routine.
174 virtual void getBuiltinCode(const uint32_t **code, uint32_t *size) const = 0;
175
parseDriverInfo(const struct nv50_ir_prog_info * info)176 virtual void parseDriverInfo(const struct nv50_ir_prog_info *info) {
177 if (info->type == PIPE_SHADER_COMPUTE) {
178 threads = info->prop.cp.numThreads[0] *
179 info->prop.cp.numThreads[1] *
180 info->prop.cp.numThreads[2];
181 if (threads == 0)
182 threads = info->target >= NVISA_GK104_CHIPSET ? 1024 : 512;
183 } else {
184 threads = 32; // doesn't matter, just not too big.
185 }
186 }
187
188 virtual bool runLegalizePass(Program *, CGStage stage) const = 0;
189
190 public:
191 struct OpInfo
192 {
193 OpInfo *variants;
194 operation op;
195 uint16_t srcTypes;
196 uint16_t dstTypes;
197 uint32_t immdBits;
198 uint8_t srcNr;
199 uint8_t srcMods[3];
200 uint8_t dstMods;
201 uint16_t srcFiles[3];
202 uint16_t dstFiles;
203 unsigned int minEncSize : 4;
204 unsigned int vector : 1;
205 unsigned int predicate : 1;
206 unsigned int commutative : 1;
207 unsigned int pseudo : 1;
208 unsigned int flow : 1;
209 unsigned int hasDest : 1;
210 unsigned int terminator : 1;
211 };
212
213 inline const OpInfo& getOpInfo(const Instruction *) const;
214 inline const OpInfo& getOpInfo(const operation) const;
215
216 inline DataFile nativeFile(DataFile f) const;
217
218 virtual bool insnCanLoad(const Instruction *insn, int s,
219 const Instruction *ld) const = 0;
220 virtual bool insnCanLoadOffset(const Instruction *insn, int s,
221 int offset) const = 0;
222 virtual bool isOpSupported(operation, DataType) const = 0;
223 virtual bool isAccessSupported(DataFile, DataType) const = 0;
224 virtual bool isModSupported(const Instruction *,
225 int s, Modifier) const = 0;
226 virtual bool isSatSupported(const Instruction *) const = 0;
isPostMultiplySupported(operation op,float f,int & e)227 virtual bool isPostMultiplySupported(operation op, float f,
228 int& e) const { return false; }
229 virtual bool mayPredicate(const Instruction *,
230 const Value *) const = 0;
231
232 // whether @insn can be issued together with @next (order matters)
canDualIssue(const Instruction * insn,const Instruction * next)233 virtual bool canDualIssue(const Instruction *insn,
234 const Instruction *next) const { return false; }
getLatency(const Instruction *)235 virtual int getLatency(const Instruction *) const { return 1; }
getThroughput(const Instruction *)236 virtual int getThroughput(const Instruction *) const { return 1; }
237
238 virtual unsigned int getFileSize(DataFile) const = 0;
239 virtual unsigned int getFileUnit(DataFile) const = 0;
240
241 virtual uint32_t getSVAddress(DataFile, const Symbol *) const = 0;
242
243 public:
244 const bool hasJoin; // true if instructions have a join modifier
245 const bool joinAnterior; // true if join is executed before the op
246 const bool hasSWSched; // true if code should provide scheduling data
247
248 static const uint8_t operationSrcNr[];
249 static const OpClass operationClass[];
250
getOpSrcNr(operation op)251 static inline uint8_t getOpSrcNr(operation op)
252 {
253 return operationSrcNr[op];
254 }
getOpClass(operation op)255 static inline OpClass getOpClass(operation op)
256 {
257 return operationClass[op];
258 }
259
260 protected:
261 uint32_t chipset;
262 uint32_t threads;
263
264 DataFile nativeFileMap[DATA_FILE_COUNT];
265
266 OpInfo opInfo[OP_LAST + 1];
267 };
268
getOpInfo(const Instruction * insn)269 const Target::OpInfo& Target::getOpInfo(const Instruction *insn) const
270 {
271 return opInfo[MIN2(insn->op, OP_LAST)];
272 }
273
getOpInfo(const operation op)274 const Target::OpInfo& Target::getOpInfo(const operation op) const
275 {
276 return opInfo[op];
277 }
278
nativeFile(DataFile f)279 inline DataFile Target::nativeFile(DataFile f) const
280 {
281 return nativeFileMap[f];
282 }
283
284 } // namespace nv50_ir
285
286 #endif // __NV50_IR_TARGET_H__
287