1 #ifndef __LINUX_OMAP_DMA_H 2 #define __LINUX_OMAP_DMA_H 3 #include <linux/omap-dmaengine.h> 4 5 /* 6 * Legacy OMAP DMA handling defines and functions 7 * 8 * NOTE: Do not use these any longer. 9 * 10 * Use the generic dmaengine functions as defined in 11 * include/linux/dmaengine.h. 12 * 13 * Copyright (C) 2003 Nokia Corporation 14 * Author: Juha Yrjölä <juha.yrjola@nokia.com> 15 * 16 */ 17 18 #include <linux/platform_device.h> 19 20 #define INT_DMA_LCD 25 21 22 #define OMAP1_DMA_TOUT_IRQ (1 << 0) 23 #define OMAP_DMA_DROP_IRQ (1 << 1) 24 #define OMAP_DMA_HALF_IRQ (1 << 2) 25 #define OMAP_DMA_FRAME_IRQ (1 << 3) 26 #define OMAP_DMA_LAST_IRQ (1 << 4) 27 #define OMAP_DMA_BLOCK_IRQ (1 << 5) 28 #define OMAP1_DMA_SYNC_IRQ (1 << 6) 29 #define OMAP2_DMA_PKT_IRQ (1 << 7) 30 #define OMAP2_DMA_TRANS_ERR_IRQ (1 << 8) 31 #define OMAP2_DMA_SECURE_ERR_IRQ (1 << 9) 32 #define OMAP2_DMA_SUPERVISOR_ERR_IRQ (1 << 10) 33 #define OMAP2_DMA_MISALIGNED_ERR_IRQ (1 << 11) 34 35 #define OMAP_DMA_CCR_EN (1 << 7) 36 #define OMAP_DMA_CCR_RD_ACTIVE (1 << 9) 37 #define OMAP_DMA_CCR_WR_ACTIVE (1 << 10) 38 #define OMAP_DMA_CCR_SEL_SRC_DST_SYNC (1 << 24) 39 #define OMAP_DMA_CCR_BUFFERING_DISABLE (1 << 25) 40 41 #define OMAP_DMA_DATA_TYPE_S8 0x00 42 #define OMAP_DMA_DATA_TYPE_S16 0x01 43 #define OMAP_DMA_DATA_TYPE_S32 0x02 44 45 #define OMAP_DMA_SYNC_ELEMENT 0x00 46 #define OMAP_DMA_SYNC_FRAME 0x01 47 #define OMAP_DMA_SYNC_BLOCK 0x02 48 #define OMAP_DMA_SYNC_PACKET 0x03 49 50 #define OMAP_DMA_DST_SYNC_PREFETCH 0x02 51 #define OMAP_DMA_SRC_SYNC 0x01 52 #define OMAP_DMA_DST_SYNC 0x00 53 54 #define OMAP_DMA_PORT_EMIFF 0x00 55 #define OMAP_DMA_PORT_EMIFS 0x01 56 #define OMAP_DMA_PORT_OCP_T1 0x02 57 #define OMAP_DMA_PORT_TIPB 0x03 58 #define OMAP_DMA_PORT_OCP_T2 0x04 59 #define OMAP_DMA_PORT_MPUI 0x05 60 61 #define OMAP_DMA_AMODE_CONSTANT 0x00 62 #define OMAP_DMA_AMODE_POST_INC 0x01 63 #define OMAP_DMA_AMODE_SINGLE_IDX 0x02 64 #define OMAP_DMA_AMODE_DOUBLE_IDX 0x03 65 66 #define DMA_DEFAULT_FIFO_DEPTH 0x10 67 #define DMA_DEFAULT_ARB_RATE 0x01 68 /* Pass THREAD_RESERVE ORed with THREAD_FIFO for tparams */ 69 #define DMA_THREAD_RESERVE_NORM (0x00 << 12) /* Def */ 70 #define DMA_THREAD_RESERVE_ONET (0x01 << 12) 71 #define DMA_THREAD_RESERVE_TWOT (0x02 << 12) 72 #define DMA_THREAD_RESERVE_THREET (0x03 << 12) 73 #define DMA_THREAD_FIFO_NONE (0x00 << 14) /* Def */ 74 #define DMA_THREAD_FIFO_75 (0x01 << 14) 75 #define DMA_THREAD_FIFO_25 (0x02 << 14) 76 #define DMA_THREAD_FIFO_50 (0x03 << 14) 77 78 /* DMA4_OCP_SYSCONFIG bits */ 79 #define DMA_SYSCONFIG_MIDLEMODE_MASK (3 << 12) 80 #define DMA_SYSCONFIG_CLOCKACTIVITY_MASK (3 << 8) 81 #define DMA_SYSCONFIG_EMUFREE (1 << 5) 82 #define DMA_SYSCONFIG_SIDLEMODE_MASK (3 << 3) 83 #define DMA_SYSCONFIG_SOFTRESET (1 << 2) 84 #define DMA_SYSCONFIG_AUTOIDLE (1 << 0) 85 86 #define DMA_SYSCONFIG_MIDLEMODE(n) ((n) << 12) 87 #define DMA_SYSCONFIG_SIDLEMODE(n) ((n) << 3) 88 89 #define DMA_IDLEMODE_SMARTIDLE 0x2 90 #define DMA_IDLEMODE_NO_IDLE 0x1 91 #define DMA_IDLEMODE_FORCE_IDLE 0x0 92 93 /* Chaining modes*/ 94 #ifndef CONFIG_ARCH_OMAP1 95 #define OMAP_DMA_STATIC_CHAIN 0x1 96 #define OMAP_DMA_DYNAMIC_CHAIN 0x2 97 #define OMAP_DMA_CHAIN_ACTIVE 0x1 98 #define OMAP_DMA_CHAIN_INACTIVE 0x0 99 #endif 100 101 #define DMA_CH_PRIO_HIGH 0x1 102 #define DMA_CH_PRIO_LOW 0x0 /* Def */ 103 104 /* Errata handling */ 105 #define IS_DMA_ERRATA(id) (errata & (id)) 106 #define SET_DMA_ERRATA(id) (errata |= (id)) 107 108 #define DMA_ERRATA_IFRAME_BUFFERING BIT(0x0) 109 #define DMA_ERRATA_PARALLEL_CHANNELS BIT(0x1) 110 #define DMA_ERRATA_i378 BIT(0x2) 111 #define DMA_ERRATA_i541 BIT(0x3) 112 #define DMA_ERRATA_i88 BIT(0x4) 113 #define DMA_ERRATA_3_3 BIT(0x5) 114 #define DMA_ROMCODE_BUG BIT(0x6) 115 116 /* Attributes for OMAP DMA Contrller */ 117 #define DMA_LINKED_LCH BIT(0x0) 118 #define GLOBAL_PRIORITY BIT(0x1) 119 #define RESERVE_CHANNEL BIT(0x2) 120 #define IS_CSSA_32 BIT(0x3) 121 #define IS_CDSA_32 BIT(0x4) 122 #define IS_RW_PRIORITY BIT(0x5) 123 #define ENABLE_1510_MODE BIT(0x6) 124 #define SRC_PORT BIT(0x7) 125 #define DST_PORT BIT(0x8) 126 #define SRC_INDEX BIT(0x9) 127 #define DST_INDEX BIT(0xa) 128 #define IS_BURST_ONLY4 BIT(0xb) 129 #define CLEAR_CSR_ON_READ BIT(0xc) 130 #define IS_WORD_16 BIT(0xd) 131 #define ENABLE_16XX_MODE BIT(0xe) 132 #define HS_CHANNELS_RESERVED BIT(0xf) 133 #define DMA_ENGINE_HANDLE_IRQ BIT(0x10) 134 135 /* Defines for DMA Capabilities */ 136 #define DMA_HAS_TRANSPARENT_CAPS (0x1 << 18) 137 #define DMA_HAS_CONSTANT_FILL_CAPS (0x1 << 19) 138 #define DMA_HAS_DESCRIPTOR_CAPS (0x3 << 20) 139 140 enum omap_reg_offsets { 141 142 GCR, GSCR, GRST1, HW_ID, 143 PCH2_ID, PCH0_ID, PCH1_ID, PCHG_ID, 144 PCHD_ID, CAPS_0, CAPS_1, CAPS_2, 145 CAPS_3, CAPS_4, PCH2_SR, PCH0_SR, 146 PCH1_SR, PCHD_SR, REVISION, IRQSTATUS_L0, 147 IRQSTATUS_L1, IRQSTATUS_L2, IRQSTATUS_L3, IRQENABLE_L0, 148 IRQENABLE_L1, IRQENABLE_L2, IRQENABLE_L3, SYSSTATUS, 149 OCP_SYSCONFIG, 150 151 /* omap1+ specific */ 152 CPC, CCR2, LCH_CTRL, 153 154 /* Common registers for all omap's */ 155 CSDP, CCR, CICR, CSR, 156 CEN, CFN, CSFI, CSEI, 157 CSAC, CDAC, CDEI, 158 CDFI, CLNK_CTRL, 159 160 /* Channel specific registers */ 161 CSSA, CDSA, COLOR, 162 CCEN, CCFN, 163 164 /* omap3630 and omap4 specific */ 165 CDP, CNDP, CCDN, 166 167 }; 168 169 enum omap_dma_burst_mode { 170 OMAP_DMA_DATA_BURST_DIS = 0, 171 OMAP_DMA_DATA_BURST_4, 172 OMAP_DMA_DATA_BURST_8, 173 OMAP_DMA_DATA_BURST_16, 174 }; 175 176 enum end_type { 177 OMAP_DMA_LITTLE_ENDIAN = 0, 178 OMAP_DMA_BIG_ENDIAN 179 }; 180 181 enum omap_dma_color_mode { 182 OMAP_DMA_COLOR_DIS = 0, 183 OMAP_DMA_CONSTANT_FILL, 184 OMAP_DMA_TRANSPARENT_COPY 185 }; 186 187 enum omap_dma_write_mode { 188 OMAP_DMA_WRITE_NON_POSTED = 0, 189 OMAP_DMA_WRITE_POSTED, 190 OMAP_DMA_WRITE_LAST_NON_POSTED 191 }; 192 193 enum omap_dma_channel_mode { 194 OMAP_DMA_LCH_2D = 0, 195 OMAP_DMA_LCH_G, 196 OMAP_DMA_LCH_P, 197 OMAP_DMA_LCH_PD 198 }; 199 200 struct omap_dma_channel_params { 201 int data_type; /* data type 8,16,32 */ 202 int elem_count; /* number of elements in a frame */ 203 int frame_count; /* number of frames in a element */ 204 205 int src_port; /* Only on OMAP1 REVISIT: Is this needed? */ 206 int src_amode; /* constant, post increment, indexed, 207 double indexed */ 208 unsigned long src_start; /* source address : physical */ 209 int src_ei; /* source element index */ 210 int src_fi; /* source frame index */ 211 212 int dst_port; /* Only on OMAP1 REVISIT: Is this needed? */ 213 int dst_amode; /* constant, post increment, indexed, 214 double indexed */ 215 unsigned long dst_start; /* source address : physical */ 216 int dst_ei; /* source element index */ 217 int dst_fi; /* source frame index */ 218 219 int trigger; /* trigger attached if the channel is 220 synchronized */ 221 int sync_mode; /* sycn on element, frame , block or packet */ 222 int src_or_dst_synch; /* source synch(1) or destination synch(0) */ 223 224 int ie; /* interrupt enabled */ 225 226 unsigned char read_prio;/* read priority */ 227 unsigned char write_prio;/* write priority */ 228 229 #ifndef CONFIG_ARCH_OMAP1 230 enum omap_dma_burst_mode burst_mode; /* Burst mode 4/8/16 words */ 231 #endif 232 }; 233 234 struct omap_dma_lch { 235 int next_lch; 236 int dev_id; 237 u16 saved_csr; 238 u16 enabled_irqs; 239 const char *dev_name; 240 void (*callback)(int lch, u16 ch_status, void *data); 241 void *data; 242 long flags; 243 /* required for Dynamic chaining */ 244 int prev_linked_ch; 245 int next_linked_ch; 246 int state; 247 int chain_id; 248 int status; 249 }; 250 251 struct omap_dma_dev_attr { 252 u32 dev_caps; 253 u16 lch_count; 254 u16 chan_count; 255 }; 256 257 enum { 258 OMAP_DMA_REG_NONE, 259 OMAP_DMA_REG_16BIT, 260 OMAP_DMA_REG_2X16BIT, 261 OMAP_DMA_REG_32BIT, 262 }; 263 264 struct omap_dma_reg { 265 u16 offset; 266 u8 stride; 267 u8 type; 268 }; 269 270 /* System DMA platform data structure */ 271 struct omap_system_dma_plat_info { 272 const struct omap_dma_reg *reg_map; 273 unsigned channel_stride; 274 struct omap_dma_dev_attr *dma_attr; 275 u32 errata; 276 void (*show_dma_caps)(void); 277 void (*clear_lch_regs)(int lch); 278 void (*clear_dma)(int lch); 279 void (*dma_write)(u32 val, int reg, int lch); 280 u32 (*dma_read)(int reg, int lch); 281 }; 282 283 #ifdef CONFIG_ARCH_OMAP2PLUS 284 #define dma_omap2plus() 1 285 #else 286 #define dma_omap2plus() 0 287 #endif 288 #define dma_omap1() (!dma_omap2plus()) 289 #define __dma_omap15xx(d) (dma_omap1() && (d)->dev_caps & ENABLE_1510_MODE) 290 #define __dma_omap16xx(d) (dma_omap1() && (d)->dev_caps & ENABLE_16XX_MODE) 291 #define dma_omap15xx() __dma_omap15xx(d) 292 #define dma_omap16xx() __dma_omap16xx(d) 293 294 extern struct omap_system_dma_plat_info *omap_get_plat_info(void); 295 296 extern void omap_set_dma_priority(int lch, int dst_port, int priority); 297 extern int omap_request_dma(int dev_id, const char *dev_name, 298 void (*callback)(int lch, u16 ch_status, void *data), 299 void *data, int *dma_ch); 300 extern void omap_enable_dma_irq(int ch, u16 irq_bits); 301 extern void omap_disable_dma_irq(int ch, u16 irq_bits); 302 extern void omap_free_dma(int ch); 303 extern void omap_start_dma(int lch); 304 extern void omap_stop_dma(int lch); 305 extern void omap_set_dma_transfer_params(int lch, int data_type, 306 int elem_count, int frame_count, 307 int sync_mode, 308 int dma_trigger, int src_or_dst_synch); 309 extern void omap_set_dma_color_mode(int lch, enum omap_dma_color_mode mode, 310 u32 color); 311 extern void omap_set_dma_write_mode(int lch, enum omap_dma_write_mode mode); 312 extern void omap_set_dma_channel_mode(int lch, enum omap_dma_channel_mode mode); 313 314 extern void omap_set_dma_src_params(int lch, int src_port, int src_amode, 315 unsigned long src_start, 316 int src_ei, int src_fi); 317 extern void omap_set_dma_src_index(int lch, int eidx, int fidx); 318 extern void omap_set_dma_src_data_pack(int lch, int enable); 319 extern void omap_set_dma_src_burst_mode(int lch, 320 enum omap_dma_burst_mode burst_mode); 321 322 extern void omap_set_dma_dest_params(int lch, int dest_port, int dest_amode, 323 unsigned long dest_start, 324 int dst_ei, int dst_fi); 325 extern void omap_set_dma_dest_index(int lch, int eidx, int fidx); 326 extern void omap_set_dma_dest_data_pack(int lch, int enable); 327 extern void omap_set_dma_dest_burst_mode(int lch, 328 enum omap_dma_burst_mode burst_mode); 329 330 extern void omap_set_dma_params(int lch, 331 struct omap_dma_channel_params *params); 332 333 extern void omap_dma_link_lch(int lch_head, int lch_queue); 334 extern void omap_dma_unlink_lch(int lch_head, int lch_queue); 335 336 extern int omap_set_dma_callback(int lch, 337 void (*callback)(int lch, u16 ch_status, void *data), 338 void *data); 339 extern dma_addr_t omap_get_dma_src_pos(int lch); 340 extern dma_addr_t omap_get_dma_dst_pos(int lch); 341 extern void omap_clear_dma(int lch); 342 extern int omap_get_dma_active_status(int lch); 343 extern int omap_dma_running(void); 344 extern void omap_dma_set_global_params(int arb_rate, int max_fifo_depth, 345 int tparams); 346 extern int omap_dma_set_prio_lch(int lch, unsigned char read_prio, 347 unsigned char write_prio); 348 extern void omap_set_dma_dst_endian_type(int lch, enum end_type etype); 349 extern void omap_set_dma_src_endian_type(int lch, enum end_type etype); 350 extern int omap_get_dma_index(int lch, int *ei, int *fi); 351 352 void omap_dma_global_context_save(void); 353 void omap_dma_global_context_restore(void); 354 355 extern void omap_dma_disable_irq(int lch); 356 357 /* Chaining APIs */ 358 #ifndef CONFIG_ARCH_OMAP1 359 extern int omap_request_dma_chain(int dev_id, const char *dev_name, 360 void (*callback) (int lch, u16 ch_status, 361 void *data), 362 int *chain_id, int no_of_chans, 363 int chain_mode, 364 struct omap_dma_channel_params params); 365 extern int omap_free_dma_chain(int chain_id); 366 extern int omap_dma_chain_a_transfer(int chain_id, int src_start, 367 int dest_start, int elem_count, 368 int frame_count, void *callbk_data); 369 extern int omap_start_dma_chain_transfers(int chain_id); 370 extern int omap_stop_dma_chain_transfers(int chain_id); 371 extern int omap_get_dma_chain_index(int chain_id, int *ei, int *fi); 372 extern int omap_get_dma_chain_dst_pos(int chain_id); 373 extern int omap_get_dma_chain_src_pos(int chain_id); 374 375 extern int omap_modify_dma_chain_params(int chain_id, 376 struct omap_dma_channel_params params); 377 extern int omap_dma_chain_status(int chain_id); 378 #endif 379 380 #if defined(CONFIG_ARCH_OMAP1) && IS_ENABLED(CONFIG_FB_OMAP) 381 #include <mach/lcd_dma.h> 382 #else 383 static inline int omap_lcd_dma_running(void) 384 { 385 return 0; 386 } 387 #endif 388 389 #endif /* __LINUX_OMAP_DMA_H */ 390