1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright 2018 Marty E. Plummer <hanetzer@startmail.com> */ 3 /* Copyright 2019 Linaro, Ltd, Rob Herring <robh@kernel.org> */ 4 /* 5 * Register definitions based on mali_midg_regmap.h 6 * (C) COPYRIGHT 2010-2018 ARM Limited. All rights reserved. 7 */ 8 #ifndef __PANFROST_REGS_H__ 9 #define __PANFROST_REGS_H__ 10 11 #define GPU_ID 0x00 12 #define GPU_L2_FEATURES 0x004 /* (RO) Level 2 cache features */ 13 #define GPU_CORE_FEATURES 0x008 /* (RO) Shader Core Features */ 14 #define GPU_TILER_FEATURES 0x00C /* (RO) Tiler Features */ 15 #define GPU_MEM_FEATURES 0x010 /* (RO) Memory system features */ 16 #define GROUPS_L2_COHERENT BIT(0) /* Cores groups are l2 coherent */ 17 18 #define GPU_MMU_FEATURES 0x014 /* (RO) MMU features */ 19 #define GPU_AS_PRESENT 0x018 /* (RO) Address space slots present */ 20 #define GPU_JS_PRESENT 0x01C /* (RO) Job slots present */ 21 22 #define GPU_INT_RAWSTAT 0x20 23 #define GPU_INT_CLEAR 0x24 24 #define GPU_INT_MASK 0x28 25 #define GPU_INT_STAT 0x2c 26 #define GPU_IRQ_FAULT BIT(0) 27 #define GPU_IRQ_MULTIPLE_FAULT BIT(7) 28 #define GPU_IRQ_RESET_COMPLETED BIT(8) 29 #define GPU_IRQ_POWER_CHANGED BIT(9) 30 #define GPU_IRQ_POWER_CHANGED_ALL BIT(10) 31 #define GPU_IRQ_PERFCNT_SAMPLE_COMPLETED BIT(16) 32 #define GPU_IRQ_CLEAN_CACHES_COMPLETED BIT(17) 33 #define GPU_IRQ_MASK_ALL \ 34 (GPU_IRQ_FAULT |\ 35 GPU_IRQ_MULTIPLE_FAULT |\ 36 GPU_IRQ_RESET_COMPLETED |\ 37 GPU_IRQ_POWER_CHANGED |\ 38 GPU_IRQ_POWER_CHANGED_ALL |\ 39 GPU_IRQ_PERFCNT_SAMPLE_COMPLETED |\ 40 GPU_IRQ_CLEAN_CACHES_COMPLETED) 41 #define GPU_IRQ_MASK_ERROR \ 42 ( \ 43 GPU_IRQ_FAULT |\ 44 GPU_IRQ_MULTIPLE_FAULT) 45 #define GPU_CMD 0x30 46 #define GPU_CMD_SOFT_RESET 0x01 47 #define GPU_CMD_PERFCNT_CLEAR 0x03 48 #define GPU_CMD_PERFCNT_SAMPLE 0x04 49 #define GPU_CMD_CLEAN_CACHES 0x07 50 #define GPU_CMD_CLEAN_INV_CACHES 0x08 51 #define GPU_STATUS 0x34 52 #define GPU_STATUS_PRFCNT_ACTIVE BIT(2) 53 #define GPU_LATEST_FLUSH_ID 0x38 54 #define GPU_PWR_KEY 0x50 /* (WO) Power manager key register */ 55 #define GPU_PWR_KEY_UNLOCK 0x2968A819 56 #define GPU_PWR_OVERRIDE0 0x54 /* (RW) Power manager override settings */ 57 #define GPU_PWR_OVERRIDE1 0x58 /* (RW) Power manager override settings */ 58 #define GPU_FAULT_STATUS 0x3C 59 #define GPU_FAULT_ADDRESS_LO 0x40 60 #define GPU_FAULT_ADDRESS_HI 0x44 61 62 #define GPU_PERFCNT_BASE_LO 0x60 63 #define GPU_PERFCNT_BASE_HI 0x64 64 #define GPU_PERFCNT_CFG 0x68 65 #define GPU_PERFCNT_CFG_MODE(x) (x) 66 #define GPU_PERFCNT_CFG_MODE_OFF 0 67 #define GPU_PERFCNT_CFG_MODE_MANUAL 1 68 #define GPU_PERFCNT_CFG_MODE_TILE 2 69 #define GPU_PERFCNT_CFG_AS(x) ((x) << 4) 70 #define GPU_PERFCNT_CFG_SETSEL(x) ((x) << 8) 71 #define GPU_PRFCNT_JM_EN 0x6c 72 #define GPU_PRFCNT_SHADER_EN 0x70 73 #define GPU_PRFCNT_TILER_EN 0x74 74 #define GPU_PRFCNT_MMU_L2_EN 0x7c 75 76 #define GPU_THREAD_MAX_THREADS 0x0A0 /* (RO) Maximum number of threads per core */ 77 #define GPU_THREAD_MAX_WORKGROUP_SIZE 0x0A4 /* (RO) Maximum workgroup size */ 78 #define GPU_THREAD_MAX_BARRIER_SIZE 0x0A8 /* (RO) Maximum threads waiting at a barrier */ 79 #define GPU_THREAD_FEATURES 0x0AC /* (RO) Thread features */ 80 #define GPU_THREAD_TLS_ALLOC 0x310 /* (RO) Number of threads per core that 81 * TLS must be allocated for */ 82 83 #define GPU_TEXTURE_FEATURES(n) (0x0B0 + ((n) * 4)) 84 #define GPU_JS_FEATURES(n) (0x0C0 + ((n) * 4)) 85 #define GPU_AFBC_FEATURES (0x4C) /* (RO) AFBC support on Bifrost */ 86 87 #define GPU_SHADER_PRESENT_LO 0x100 /* (RO) Shader core present bitmap, low word */ 88 #define GPU_SHADER_PRESENT_HI 0x104 /* (RO) Shader core present bitmap, high word */ 89 #define GPU_TILER_PRESENT_LO 0x110 /* (RO) Tiler core present bitmap, low word */ 90 #define GPU_TILER_PRESENT_HI 0x114 /* (RO) Tiler core present bitmap, high word */ 91 92 #define GPU_L2_PRESENT_LO 0x120 /* (RO) Level 2 cache present bitmap, low word */ 93 #define GPU_L2_PRESENT_HI 0x124 /* (RO) Level 2 cache present bitmap, high word */ 94 95 #define GPU_COHERENCY_FEATURES 0x300 /* (RO) Coherency features present */ 96 #define COHERENCY_ACE_LITE BIT(0) 97 #define COHERENCY_ACE BIT(1) 98 99 #define GPU_STACK_PRESENT_LO 0xE00 /* (RO) Core stack present bitmap, low word */ 100 #define GPU_STACK_PRESENT_HI 0xE04 /* (RO) Core stack present bitmap, high word */ 101 102 #define SHADER_READY_LO 0x140 /* (RO) Shader core ready bitmap, low word */ 103 #define SHADER_READY_HI 0x144 /* (RO) Shader core ready bitmap, high word */ 104 105 #define TILER_READY_LO 0x150 /* (RO) Tiler core ready bitmap, low word */ 106 #define TILER_READY_HI 0x154 /* (RO) Tiler core ready bitmap, high word */ 107 108 #define L2_READY_LO 0x160 /* (RO) Level 2 cache ready bitmap, low word */ 109 #define L2_READY_HI 0x164 /* (RO) Level 2 cache ready bitmap, high word */ 110 111 #define STACK_READY_LO 0xE10 /* (RO) Core stack ready bitmap, low word */ 112 #define STACK_READY_HI 0xE14 /* (RO) Core stack ready bitmap, high word */ 113 114 115 #define SHADER_PWRON_LO 0x180 /* (WO) Shader core power on bitmap, low word */ 116 #define SHADER_PWRON_HI 0x184 /* (WO) Shader core power on bitmap, high word */ 117 118 #define TILER_PWRON_LO 0x190 /* (WO) Tiler core power on bitmap, low word */ 119 #define TILER_PWRON_HI 0x194 /* (WO) Tiler core power on bitmap, high word */ 120 121 #define L2_PWRON_LO 0x1A0 /* (WO) Level 2 cache power on bitmap, low word */ 122 #define L2_PWRON_HI 0x1A4 /* (WO) Level 2 cache power on bitmap, high word */ 123 124 #define STACK_PWRON_LO 0xE20 /* (RO) Core stack power on bitmap, low word */ 125 #define STACK_PWRON_HI 0xE24 /* (RO) Core stack power on bitmap, high word */ 126 127 128 #define SHADER_PWROFF_LO 0x1C0 /* (WO) Shader core power off bitmap, low word */ 129 #define SHADER_PWROFF_HI 0x1C4 /* (WO) Shader core power off bitmap, high word */ 130 131 #define TILER_PWROFF_LO 0x1D0 /* (WO) Tiler core power off bitmap, low word */ 132 #define TILER_PWROFF_HI 0x1D4 /* (WO) Tiler core power off bitmap, high word */ 133 134 #define L2_PWROFF_LO 0x1E0 /* (WO) Level 2 cache power off bitmap, low word */ 135 #define L2_PWROFF_HI 0x1E4 /* (WO) Level 2 cache power off bitmap, high word */ 136 137 #define STACK_PWROFF_LO 0xE30 /* (RO) Core stack power off bitmap, low word */ 138 #define STACK_PWROFF_HI 0xE34 /* (RO) Core stack power off bitmap, high word */ 139 140 141 #define SHADER_PWRTRANS_LO 0x200 /* (RO) Shader core power transition bitmap, low word */ 142 #define SHADER_PWRTRANS_HI 0x204 /* (RO) Shader core power transition bitmap, high word */ 143 144 #define TILER_PWRTRANS_LO 0x210 /* (RO) Tiler core power transition bitmap, low word */ 145 #define TILER_PWRTRANS_HI 0x214 /* (RO) Tiler core power transition bitmap, high word */ 146 147 #define L2_PWRTRANS_LO 0x220 /* (RO) Level 2 cache power transition bitmap, low word */ 148 #define L2_PWRTRANS_HI 0x224 /* (RO) Level 2 cache power transition bitmap, high word */ 149 150 #define STACK_PWRTRANS_LO 0xE40 /* (RO) Core stack power transition bitmap, low word */ 151 #define STACK_PWRTRANS_HI 0xE44 /* (RO) Core stack power transition bitmap, high word */ 152 153 154 #define SHADER_PWRACTIVE_LO 0x240 /* (RO) Shader core active bitmap, low word */ 155 #define SHADER_PWRACTIVE_HI 0x244 /* (RO) Shader core active bitmap, high word */ 156 157 #define TILER_PWRACTIVE_LO 0x250 /* (RO) Tiler core active bitmap, low word */ 158 #define TILER_PWRACTIVE_HI 0x254 /* (RO) Tiler core active bitmap, high word */ 159 160 #define L2_PWRACTIVE_LO 0x260 /* (RO) Level 2 cache active bitmap, low word */ 161 #define L2_PWRACTIVE_HI 0x264 /* (RO) Level 2 cache active bitmap, high word */ 162 163 #define GPU_JM_CONFIG 0xF00 /* (RW) Job Manager configuration register (Implementation specific register) */ 164 #define GPU_SHADER_CONFIG 0xF04 /* (RW) Shader core configuration settings (Implementation specific register) */ 165 #define GPU_TILER_CONFIG 0xF08 /* (RW) Tiler core configuration settings (Implementation specific register) */ 166 #define GPU_L2_MMU_CONFIG 0xF0C /* (RW) Configuration of the L2 cache and MMU (Implementation specific register) */ 167 168 /* L2_MMU_CONFIG register */ 169 #define L2_MMU_CONFIG_ALLOW_SNOOP_DISPARITY_SHIFT 23 170 #define L2_MMU_CONFIG_ALLOW_SNOOP_DISPARITY (0x1 << L2_MMU_CONFIG_ALLOW_SNOOP_DISPARITY_SHIFT) 171 #define L2_MMU_CONFIG_LIMIT_EXTERNAL_READS_SHIFT 24 172 #define L2_MMU_CONFIG_LIMIT_EXTERNAL_READS (0x3 << L2_MMU_CONFIG_LIMIT_EXTERNAL_READS_SHIFT) 173 #define L2_MMU_CONFIG_LIMIT_EXTERNAL_READS_OCTANT (0x1 << L2_MMU_CONFIG_LIMIT_EXTERNAL_READS_SHIFT) 174 #define L2_MMU_CONFIG_LIMIT_EXTERNAL_READS_QUARTER (0x2 << L2_MMU_CONFIG_LIMIT_EXTERNAL_READS_SHIFT) 175 #define L2_MMU_CONFIG_LIMIT_EXTERNAL_READS_HALF (0x3 << L2_MMU_CONFIG_LIMIT_EXTERNAL_READS_SHIFT) 176 177 #define L2_MMU_CONFIG_LIMIT_EXTERNAL_WRITES_SHIFT 26 178 #define L2_MMU_CONFIG_LIMIT_EXTERNAL_WRITES (0x3 << L2_MMU_CONFIG_LIMIT_EXTERNAL_WRITES_SHIFT) 179 #define L2_MMU_CONFIG_LIMIT_EXTERNAL_WRITES_OCTANT (0x1 << L2_MMU_CONFIG_LIMIT_EXTERNAL_WRITES_SHIFT) 180 #define L2_MMU_CONFIG_LIMIT_EXTERNAL_WRITES_QUARTER (0x2 << L2_MMU_CONFIG_LIMIT_EXTERNAL_WRITES_SHIFT) 181 #define L2_MMU_CONFIG_LIMIT_EXTERNAL_WRITES_HALF (0x3 << L2_MMU_CONFIG_LIMIT_EXTERNAL_WRITES_SHIFT) 182 183 #define L2_MMU_CONFIG_3BIT_LIMIT_EXTERNAL_READS_SHIFT 12 184 #define L2_MMU_CONFIG_3BIT_LIMIT_EXTERNAL_READS (0x7 << L2_MMU_CONFIG_LIMIT_EXTERNAL_READS_SHIFT) 185 186 #define L2_MMU_CONFIG_3BIT_LIMIT_EXTERNAL_WRITES_SHIFT 15 187 #define L2_MMU_CONFIG_3BIT_LIMIT_EXTERNAL_WRITES (0x7 << L2_MMU_CONFIG_LIMIT_EXTERNAL_WRITES_SHIFT) 188 189 /* SHADER_CONFIG register */ 190 #define SC_ALT_COUNTERS BIT(3) 191 #define SC_OVERRIDE_FWD_PIXEL_KILL BIT(4) 192 #define SC_SDC_DISABLE_OQ_DISCARD BIT(6) 193 #define SC_LS_ALLOW_ATTR_TYPES BIT(16) 194 #define SC_LS_PAUSEBUFFER_DISABLE BIT(16) 195 #define SC_TLS_HASH_ENABLE BIT(17) 196 #define SC_LS_ATTR_CHECK_DISABLE BIT(18) 197 #define SC_ENABLE_TEXGRD_FLAGS BIT(25) 198 /* End SHADER_CONFIG register */ 199 200 /* TILER_CONFIG register */ 201 #define TC_CLOCK_GATE_OVERRIDE BIT(0) 202 203 /* JM_CONFIG register */ 204 #define JM_TIMESTAMP_OVERRIDE BIT(0) 205 #define JM_CLOCK_GATE_OVERRIDE BIT(1) 206 #define JM_JOB_THROTTLE_ENABLE BIT(2) 207 #define JM_JOB_THROTTLE_LIMIT_SHIFT 3 208 #define JM_MAX_JOB_THROTTLE_LIMIT 0x3F 209 #define JM_FORCE_COHERENCY_FEATURES_SHIFT 2 210 #define JM_IDVS_GROUP_SIZE_SHIFT 16 211 #define JM_MAX_IDVS_GROUP_SIZE 0x3F 212 213 214 /* Job Control regs */ 215 #define JOB_INT_RAWSTAT 0x1000 216 #define JOB_INT_CLEAR 0x1004 217 #define JOB_INT_MASK 0x1008 218 #define JOB_INT_STAT 0x100c 219 #define JOB_INT_JS_STATE 0x1010 220 #define JOB_INT_THROTTLE 0x1014 221 222 #define MK_JS_MASK(j) (0x10001 << (j)) 223 #define JOB_INT_MASK_ERR(j) BIT((j) + 16) 224 #define JOB_INT_MASK_DONE(j) BIT(j) 225 226 #define JS_BASE 0x1800 227 #define JS_HEAD_LO(n) (JS_BASE + ((n) * 0x80) + 0x00) 228 #define JS_HEAD_HI(n) (JS_BASE + ((n) * 0x80) + 0x04) 229 #define JS_TAIL_LO(n) (JS_BASE + ((n) * 0x80) + 0x08) 230 #define JS_TAIL_HI(n) (JS_BASE + ((n) * 0x80) + 0x0c) 231 #define JS_AFFINITY_LO(n) (JS_BASE + ((n) * 0x80) + 0x10) 232 #define JS_AFFINITY_HI(n) (JS_BASE + ((n) * 0x80) + 0x14) 233 #define JS_CONFIG(n) (JS_BASE + ((n) * 0x80) + 0x18) 234 #define JS_XAFFINITY(n) (JS_BASE + ((n) * 0x80) + 0x1c) 235 #define JS_COMMAND(n) (JS_BASE + ((n) * 0x80) + 0x20) 236 #define JS_STATUS(n) (JS_BASE + ((n) * 0x80) + 0x24) 237 #define JS_HEAD_NEXT_LO(n) (JS_BASE + ((n) * 0x80) + 0x40) 238 #define JS_HEAD_NEXT_HI(n) (JS_BASE + ((n) * 0x80) + 0x44) 239 #define JS_AFFINITY_NEXT_LO(n) (JS_BASE + ((n) * 0x80) + 0x50) 240 #define JS_AFFINITY_NEXT_HI(n) (JS_BASE + ((n) * 0x80) + 0x54) 241 #define JS_CONFIG_NEXT(n) (JS_BASE + ((n) * 0x80) + 0x58) 242 #define JS_COMMAND_NEXT(n) (JS_BASE + ((n) * 0x80) + 0x60) 243 #define JS_FLUSH_ID_NEXT(n) (JS_BASE + ((n) * 0x80) + 0x70) 244 245 /* Possible values of JS_CONFIG and JS_CONFIG_NEXT registers */ 246 #define JS_CONFIG_START_FLUSH_CLEAN BIT(8) 247 #define JS_CONFIG_START_FLUSH_CLEAN_INVALIDATE (3u << 8) 248 #define JS_CONFIG_START_MMU BIT(10) 249 #define JS_CONFIG_JOB_CHAIN_FLAG BIT(11) 250 #define JS_CONFIG_END_FLUSH_CLEAN BIT(12) 251 #define JS_CONFIG_END_FLUSH_CLEAN_INVALIDATE (3u << 12) 252 #define JS_CONFIG_ENABLE_FLUSH_REDUCTION BIT(14) 253 #define JS_CONFIG_DISABLE_DESCRIPTOR_WR_BK BIT(15) 254 #define JS_CONFIG_THREAD_PRI(n) ((n) << 16) 255 256 #define JS_COMMAND_NOP 0x00 257 #define JS_COMMAND_START 0x01 258 #define JS_COMMAND_SOFT_STOP 0x02 /* Gently stop processing a job chain */ 259 #define JS_COMMAND_HARD_STOP 0x03 /* Rudely stop processing a job chain */ 260 #define JS_COMMAND_SOFT_STOP_0 0x04 /* Execute SOFT_STOP if JOB_CHAIN_FLAG is 0 */ 261 #define JS_COMMAND_HARD_STOP_0 0x05 /* Execute HARD_STOP if JOB_CHAIN_FLAG is 0 */ 262 #define JS_COMMAND_SOFT_STOP_1 0x06 /* Execute SOFT_STOP if JOB_CHAIN_FLAG is 1 */ 263 #define JS_COMMAND_HARD_STOP_1 0x07 /* Execute HARD_STOP if JOB_CHAIN_FLAG is 1 */ 264 265 #define JS_STATUS_EVENT_ACTIVE 0x08 266 267 268 /* MMU regs */ 269 #define MMU_INT_RAWSTAT 0x2000 270 #define MMU_INT_CLEAR 0x2004 271 #define MMU_INT_MASK 0x2008 272 #define MMU_INT_STAT 0x200c 273 274 /* AS_COMMAND register commands */ 275 #define AS_COMMAND_NOP 0x00 /* NOP Operation */ 276 #define AS_COMMAND_UPDATE 0x01 /* Broadcasts the values in AS_TRANSTAB and ASn_MEMATTR to all MMUs */ 277 #define AS_COMMAND_LOCK 0x02 /* Issue a lock region command to all MMUs */ 278 #define AS_COMMAND_UNLOCK 0x03 /* Issue a flush region command to all MMUs */ 279 #define AS_COMMAND_FLUSH 0x04 /* Flush all L2 caches then issue a flush region command to all MMUs 280 (deprecated - only for use with T60x) */ 281 #define AS_COMMAND_FLUSH_PT 0x04 /* Flush all L2 caches then issue a flush region command to all MMUs */ 282 #define AS_COMMAND_FLUSH_MEM 0x05 /* Wait for memory accesses to complete, flush all the L1s cache then 283 flush all L2 caches then issue a flush region command to all MMUs */ 284 285 #define MMU_AS(as) (0x2400 + ((as) << 6)) 286 287 #define AS_TRANSTAB_LO(as) (MMU_AS(as) + 0x00) /* (RW) Translation Table Base Address for address space n, low word */ 288 #define AS_TRANSTAB_HI(as) (MMU_AS(as) + 0x04) /* (RW) Translation Table Base Address for address space n, high word */ 289 #define AS_MEMATTR_LO(as) (MMU_AS(as) + 0x08) /* (RW) Memory attributes for address space n, low word. */ 290 #define AS_MEMATTR_HI(as) (MMU_AS(as) + 0x0C) /* (RW) Memory attributes for address space n, high word. */ 291 #define AS_LOCKADDR_LO(as) (MMU_AS(as) + 0x10) /* (RW) Lock region address for address space n, low word */ 292 #define AS_LOCKADDR_HI(as) (MMU_AS(as) + 0x14) /* (RW) Lock region address for address space n, high word */ 293 #define AS_COMMAND(as) (MMU_AS(as) + 0x18) /* (WO) MMU command register for address space n */ 294 #define AS_FAULTSTATUS(as) (MMU_AS(as) + 0x1C) /* (RO) MMU fault status register for address space n */ 295 #define AS_FAULTADDRESS_LO(as) (MMU_AS(as) + 0x20) /* (RO) Fault Address for address space n, low word */ 296 #define AS_FAULTADDRESS_HI(as) (MMU_AS(as) + 0x24) /* (RO) Fault Address for address space n, high word */ 297 #define AS_STATUS(as) (MMU_AS(as) + 0x28) /* (RO) Status flags for address space n */ 298 /* Additional Bifrost AS regsiters */ 299 #define AS_TRANSCFG_LO(as) (MMU_AS(as) + 0x30) /* (RW) Translation table configuration for address space n, low word */ 300 #define AS_TRANSCFG_HI(as) (MMU_AS(as) + 0x34) /* (RW) Translation table configuration for address space n, high word */ 301 #define AS_FAULTEXTRA_LO(as) (MMU_AS(as) + 0x38) /* (RO) Secondary fault address for address space n, low word */ 302 #define AS_FAULTEXTRA_HI(as) (MMU_AS(as) + 0x3C) /* (RO) Secondary fault address for address space n, high word */ 303 304 /* 305 * Begin LPAE MMU TRANSTAB register values 306 */ 307 #define AS_TRANSTAB_LPAE_ADDR_SPACE_MASK 0xfffffffffffff000 308 #define AS_TRANSTAB_LPAE_ADRMODE_IDENTITY 0x2 309 #define AS_TRANSTAB_LPAE_ADRMODE_TABLE 0x3 310 #define AS_TRANSTAB_LPAE_ADRMODE_MASK 0x3 311 #define AS_TRANSTAB_LPAE_READ_INNER BIT(2) 312 #define AS_TRANSTAB_LPAE_SHARE_OUTER BIT(4) 313 314 #define AS_STATUS_AS_ACTIVE 0x01 315 316 #define AS_FAULTSTATUS_ACCESS_TYPE_MASK (0x3 << 8) 317 #define AS_FAULTSTATUS_ACCESS_TYPE_ATOMIC (0x0 << 8) 318 #define AS_FAULTSTATUS_ACCESS_TYPE_EX (0x1 << 8) 319 #define AS_FAULTSTATUS_ACCESS_TYPE_READ (0x2 << 8) 320 #define AS_FAULTSTATUS_ACCESS_TYPE_WRITE (0x3 << 8) 321 322 #define gpu_write(dev, reg, data) writel(data, dev->iomem + reg) 323 #define gpu_read(dev, reg) readl(dev->iomem + reg) 324 325 #endif 326