Rama Krishna Phani A | a0550c9 | 2016-07-11 15:58:02 +0530 | [diff] [blame] | 1 | /* Copyright (c) 2011-2018, The Linux Foundation. All rights reserved. |
Amir Levy | 85fdcb6 | 2016-11-15 15:37:14 +0200 | [diff] [blame] | 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | */ |
| 12 | |
| 13 | /* Smart-Peripheral-Switch (SPS) API. */ |
| 14 | |
| 15 | #ifndef _SPS_H_ |
| 16 | #define _SPS_H_ |
| 17 | |
| 18 | #include <linux/types.h> /* u32 */ |
| 19 | |
| 20 | #if defined(CONFIG_PHYS_ADDR_T_64BIT) || defined(CONFIG_ARM_LPAE) |
| 21 | |
| 22 | /* Returns upper 4bits of 36bits physical address */ |
| 23 | #define SPS_GET_UPPER_ADDR(addr) ((addr & 0xF00000000ULL) >> 32) |
| 24 | |
| 25 | /* Returns 36bits physical address from 32bit address & |
| 26 | * flags word |
| 27 | */ |
| 28 | #define DESC_FULL_ADDR(flags, addr) ((((phys_addr_t)flags & 0xF) << 32) | addr) |
| 29 | |
| 30 | /* Returns flags word with flags and 4bit upper address |
| 31 | * from flags and 36bit physical address |
| 32 | */ |
| 33 | #define DESC_FLAG_WORD(flags, addr) (((addr & 0xF00000000ULL) >> 32) | flags) |
| 34 | |
| 35 | #else |
| 36 | |
| 37 | #define SPS_GET_UPPER_ADDR(addr) (0) |
| 38 | #define DESC_FULL_ADDR(flags, addr) (addr) |
| 39 | #define DESC_FLAG_WORD(flags, addr) (flags) |
| 40 | |
| 41 | #endif |
| 42 | |
| 43 | /* Returns upper 4bits of 36bits physical address from |
| 44 | * flags word |
| 45 | */ |
| 46 | #define DESC_UPPER_ADDR(flags) ((flags & 0xF)) |
| 47 | |
| 48 | /* Returns lower 32bits of 36bits physical address */ |
| 49 | #define SPS_GET_LOWER_ADDR(addr) ((u32)(addr & 0xFFFFFFFF)) |
| 50 | |
| 51 | /* SPS device handle indicating use of system memory */ |
| 52 | #define SPS_DEV_HANDLE_MEM (~0x0ul>>1) |
| 53 | |
| 54 | /* SPS device handle indicating use of BAM-DMA */ |
| 55 | |
| 56 | /* SPS device handle invalid value */ |
| 57 | #define SPS_DEV_HANDLE_INVALID 0 |
| 58 | |
| 59 | /* BAM invalid IRQ value */ |
| 60 | #define SPS_IRQ_INVALID 0 |
| 61 | |
| 62 | /* Invalid address value */ |
| 63 | #define SPS_ADDR_INVALID (0xDEADBEEF) |
| 64 | |
| 65 | /* Invalid peripheral device enumeration class */ |
| 66 | #define SPS_CLASS_INVALID ((unsigned long)-1) |
| 67 | |
| 68 | /* |
| 69 | * This value specifies different configurations for an SPS connection. |
| 70 | * A non-default value instructs the SPS driver to search for the configuration |
| 71 | * in the fixed connection mapping table. |
| 72 | */ |
| 73 | #define SPS_CONFIG_DEFAULT 0 |
| 74 | |
| 75 | /* |
| 76 | * This value instructs the SPS driver to use the default BAM-DMA channel |
| 77 | * threshold |
| 78 | */ |
| 79 | #define SPS_DMA_THRESHOLD_DEFAULT 0 |
| 80 | |
| 81 | /* Flag bits supported by SPS hardware for struct sps_iovec */ |
| 82 | #define SPS_IOVEC_FLAG_INT 0x8000 /* Generate interrupt */ |
| 83 | #define SPS_IOVEC_FLAG_EOT 0x4000 /* Generate end-of-transfer indication */ |
| 84 | #define SPS_IOVEC_FLAG_EOB 0x2000 /* Generate end-of-block indication */ |
| 85 | #define SPS_IOVEC_FLAG_NWD 0x1000 /* notify when done */ |
| 86 | #define SPS_IOVEC_FLAG_CMD 0x0800 /* command descriptor */ |
| 87 | #define SPS_IOVEC_FLAG_LOCK 0x0400 /* pipe lock */ |
| 88 | #define SPS_IOVEC_FLAG_UNLOCK 0x0200 /* pipe unlock */ |
| 89 | #define SPS_IOVEC_FLAG_IMME 0x0100 /* immediate command descriptor */ |
| 90 | #define SPS_IOVEC_FLAG_NO_SUBMIT 0x0020 /* Do not submit descriptor to HW */ |
| 91 | #define SPS_IOVEC_FLAG_DEFAULT 0x0010 /* Use driver default */ |
| 92 | |
| 93 | /* Maximum descriptor/iovec size */ |
| 94 | #define SPS_IOVEC_MAX_SIZE (32 * 1024 - 1) /* 32K-1 bytes due to HW limit */ |
| 95 | |
| 96 | /* BAM device options flags */ |
| 97 | |
| 98 | /* |
| 99 | * BAM will be configured and enabled at boot. Otherwise, BAM will be |
| 100 | * configured and enabled when first pipe connect occurs. |
| 101 | */ |
| 102 | #define SPS_BAM_OPT_ENABLE_AT_BOOT 1UL |
| 103 | /* BAM IRQ is disabled */ |
| 104 | #define SPS_BAM_OPT_IRQ_DISABLED (1UL << 1) |
| 105 | /* BAM peripheral is a BAM-DMA */ |
| 106 | #define SPS_BAM_OPT_BAMDMA (1UL << 2) |
| 107 | /* BAM IRQ is registered for apps wakeup */ |
| 108 | #define SPS_BAM_OPT_IRQ_WAKEUP (1UL << 3) |
| 109 | /* Ignore external block pipe reset */ |
| 110 | #define SPS_BAM_NO_EXT_P_RST (1UL << 4) |
| 111 | /* Don't enable local clock gating */ |
| 112 | #define SPS_BAM_NO_LOCAL_CLK_GATING (1UL << 5) |
| 113 | /* Don't enable writeback cancel*/ |
| 114 | #define SPS_BAM_CANCEL_WB (1UL << 6) |
| 115 | /* BAM uses SMMU */ |
| 116 | #define SPS_BAM_SMMU_EN (1UL << 9) |
| 117 | /* Confirm resource status before access BAM*/ |
| 118 | #define SPS_BAM_RES_CONFIRM (1UL << 7) |
| 119 | /* Hold memory for BAM DMUX */ |
| 120 | #define SPS_BAM_HOLD_MEM (1UL << 8) |
| 121 | /* Use cached write pointer */ |
| 122 | #define SPS_BAM_CACHED_WP (1UL << 10) |
Rama Krishna Phani A | a0550c9 | 2016-07-11 15:58:02 +0530 | [diff] [blame] | 123 | /* Reset BAM with pipes connected */ |
| 124 | #define SPS_BAM_FORCE_RESET (1UL << 11) |
Amir Levy | 85fdcb6 | 2016-11-15 15:37:14 +0200 | [diff] [blame] | 125 | |
| 126 | /* BAM device management flags */ |
| 127 | |
| 128 | /* BAM global device control is managed remotely */ |
| 129 | #define SPS_BAM_MGR_DEVICE_REMOTE 1UL |
| 130 | /* BAM device supports multiple execution environments */ |
| 131 | #define SPS_BAM_MGR_MULTI_EE (1UL << 1) |
| 132 | /* BAM pipes are *not* allocated locally */ |
| 133 | #define SPS_BAM_MGR_PIPE_NO_ALLOC (1UL << 2) |
| 134 | /* BAM pipes are *not* configured locally */ |
| 135 | #define SPS_BAM_MGR_PIPE_NO_CONFIG (1UL << 3) |
| 136 | /* BAM pipes are *not* controlled locally */ |
| 137 | #define SPS_BAM_MGR_PIPE_NO_CTRL (1UL << 4) |
| 138 | /* "Globbed" management properties */ |
| 139 | #define SPS_BAM_MGR_NONE \ |
| 140 | (SPS_BAM_MGR_DEVICE_REMOTE | SPS_BAM_MGR_PIPE_NO_ALLOC | \ |
| 141 | SPS_BAM_MGR_PIPE_NO_CONFIG | SPS_BAM_MGR_PIPE_NO_CTRL) |
| 142 | #define SPS_BAM_MGR_LOCAL 0 |
| 143 | #define SPS_BAM_MGR_LOCAL_SHARED SPS_BAM_MGR_MULTI_EE |
| 144 | #define SPS_BAM_MGR_REMOTE_SHARED \ |
| 145 | (SPS_BAM_MGR_DEVICE_REMOTE | SPS_BAM_MGR_MULTI_EE | \ |
| 146 | SPS_BAM_MGR_PIPE_NO_ALLOC) |
| 147 | #define SPS_BAM_MGR_ACCESS_MASK SPS_BAM_MGR_NONE |
| 148 | |
| 149 | /* |
| 150 | * BAM security configuration |
| 151 | */ |
| 152 | #define SPS_BAM_NUM_EES 4 |
| 153 | #define SPS_BAM_SEC_DO_NOT_CONFIG 0 |
| 154 | #define SPS_BAM_SEC_DO_CONFIG 0x0A434553 |
| 155 | |
| 156 | /* BAM pipe selection */ |
| 157 | #define SPS_BAM_PIPE(n) (1UL << (n)) |
| 158 | |
| 159 | /* This enum specifies the operational mode for an SPS connection */ |
| 160 | enum sps_mode { |
| 161 | SPS_MODE_SRC = 0, /* end point is the source (producer) */ |
| 162 | SPS_MODE_DEST, /* end point is the destination (consumer) */ |
| 163 | }; |
| 164 | |
| 165 | |
| 166 | /* |
| 167 | * This enum is a set of bit flag options for SPS connection. |
| 168 | * The enums should be OR'd together to create the option set |
| 169 | * for the SPS connection. |
| 170 | */ |
| 171 | enum sps_option { |
| 172 | /* |
| 173 | * Options to enable specific SPS hardware interrupts. |
| 174 | * These bit flags are also used to indicate interrupt source |
| 175 | * for the SPS_EVENT_IRQ event. |
| 176 | */ |
| 177 | SPS_O_DESC_DONE = 0x00000001, /* Descriptor processed */ |
| 178 | SPS_O_INACTIVE = 0x00000002, /* Inactivity timeout */ |
| 179 | SPS_O_WAKEUP = 0x00000004, /* Peripheral wake up */ |
| 180 | SPS_O_OUT_OF_DESC = 0x00000008,/* Out of descriptors */ |
| 181 | SPS_O_ERROR = 0x00000010, /* Error */ |
| 182 | SPS_O_EOT = 0x00000020, /* End-of-transfer */ |
| 183 | SPS_O_RST_ERROR = 0x00000040, /* Pipe reset unsucessful error */ |
| 184 | SPS_O_HRESP_ERROR = 0x00000080,/* Errorneous Hresponse by AHB MASTER */ |
| 185 | |
| 186 | /* Options to enable hardware features */ |
| 187 | SPS_O_STREAMING = 0x00010000, /* Enable streaming mode (no EOT) */ |
| 188 | /* Use MTI/SETPEND instead of BAM interrupt */ |
| 189 | SPS_O_IRQ_MTI = 0x00020000, |
| 190 | /* NWD bit written with EOT for BAM2BAM producer pipe */ |
| 191 | SPS_O_WRITE_NWD = 0x00040000, |
| 192 | /* EOT set after pipe SW offset advanced */ |
| 193 | SPS_O_LATE_EOT = 0x00080000, |
| 194 | |
| 195 | /* Options to enable software features */ |
| 196 | /* Do not disable a pipe during disconnection */ |
| 197 | SPS_O_NO_DISABLE = 0x00800000, |
| 198 | /* Transfer operation should be polled */ |
| 199 | SPS_O_POLL = 0x01000000, |
| 200 | /* Disable queuing of transfer events for the connection end point */ |
| 201 | SPS_O_NO_Q = 0x02000000, |
| 202 | SPS_O_FLOWOFF = 0x04000000, /* Graceful halt */ |
| 203 | /* SPS_O_WAKEUP will be disabled after triggered */ |
| 204 | SPS_O_WAKEUP_IS_ONESHOT = 0x08000000, |
| 205 | /** |
| 206 | * Client must read each descriptor from the FIFO |
| 207 | * using sps_get_iovec() |
| 208 | */ |
| 209 | SPS_O_ACK_TRANSFERS = 0x10000000, |
| 210 | /* Connection is automatically enabled */ |
| 211 | SPS_O_AUTO_ENABLE = 0x20000000, |
| 212 | /* DISABLE endpoint synchronization for config/enable/disable */ |
| 213 | SPS_O_NO_EP_SYNC = 0x40000000, |
| 214 | /* Allow partial polling duing IRQ mode */ |
| 215 | SPS_O_HYBRID = 0x80000000, |
| 216 | }; |
| 217 | |
| 218 | /** |
| 219 | * This enum specifies BAM DMA channel priority. Clients should use |
| 220 | * SPS_DMA_PRI_DEFAULT unless a specific priority is required. |
| 221 | */ |
| 222 | enum sps_dma_priority { |
| 223 | SPS_DMA_PRI_DEFAULT = 0, |
| 224 | SPS_DMA_PRI_LOW, |
| 225 | SPS_DMA_PRI_MED, |
| 226 | SPS_DMA_PRI_HIGH, |
| 227 | }; |
| 228 | |
| 229 | /* |
| 230 | * This enum specifies the ownership of a connection resource. |
| 231 | * Remote or shared ownership is only possible/meaningful on the processor |
| 232 | * that controls resource. |
| 233 | */ |
| 234 | enum sps_owner { |
| 235 | SPS_OWNER_LOCAL = 0x1, /* Resource is owned by local processor */ |
| 236 | SPS_OWNER_REMOTE = 0x2, /* Resource is owned by a satellite processor */ |
| 237 | }; |
| 238 | |
| 239 | /* This enum indicates the event associated with a client event trigger */ |
| 240 | enum sps_event { |
| 241 | SPS_EVENT_INVALID = 0, |
| 242 | |
| 243 | SPS_EVENT_EOT, /* End-of-transfer */ |
| 244 | SPS_EVENT_DESC_DONE, /* Descriptor processed */ |
| 245 | SPS_EVENT_OUT_OF_DESC, /* Out of descriptors */ |
| 246 | SPS_EVENT_WAKEUP, /* Peripheral wake up */ |
| 247 | SPS_EVENT_FLOWOFF, /* Graceful halt (idle) */ |
| 248 | SPS_EVENT_INACTIVE, /* Inactivity timeout */ |
| 249 | SPS_EVENT_ERROR, /* Error */ |
| 250 | SPS_EVENT_RST_ERROR, /* Pipe Reset unsuccessful */ |
| 251 | SPS_EVENT_HRESP_ERROR, /* Errorneous Hresponse by AHB Master*/ |
| 252 | SPS_EVENT_MAX, |
| 253 | }; |
| 254 | |
| 255 | /* |
| 256 | * This enum specifies the event trigger mode and is an argument for the |
| 257 | * sps_register_event() function. |
| 258 | */ |
| 259 | enum sps_trigger { |
| 260 | /* Trigger with payload for callback */ |
| 261 | SPS_TRIGGER_CALLBACK = 0, |
| 262 | /* Trigger without payload for wait or poll */ |
| 263 | SPS_TRIGGER_WAIT, |
| 264 | }; |
| 265 | |
| 266 | /* |
| 267 | * This enum indicates the desired halting mechanism and is an argument for the |
| 268 | * sps_flow_off() function |
| 269 | */ |
| 270 | enum sps_flow_off { |
| 271 | SPS_FLOWOFF_FORCED = 0, /* Force hardware into halt state */ |
| 272 | /* Allow hardware to empty pipe before halting */ |
| 273 | SPS_FLOWOFF_GRACEFUL, |
| 274 | }; |
| 275 | |
| 276 | /* |
| 277 | * This enum indicates the target memory heap and is an argument for the |
| 278 | * sps_mem_alloc() function. |
| 279 | */ |
| 280 | enum sps_mem { |
| 281 | SPS_MEM_LOCAL = 0, /* SPS subsystem local (pipe) memory */ |
| 282 | SPS_MEM_UC, /* Microcontroller (ARM7) local memory */ |
| 283 | }; |
| 284 | |
| 285 | /* |
| 286 | * This enum indicates a timer control operation and is an argument for the |
| 287 | * sps_timer_ctrl() function. |
| 288 | */ |
| 289 | enum sps_timer_op { |
| 290 | SPS_TIMER_OP_CONFIG = 0, |
| 291 | SPS_TIMER_OP_RESET, |
| 292 | /* SPS_TIMER_OP_START, Not supported by hardware yet */ |
| 293 | /* SPS_TIMER_OP_STOP, Not supported by hardware yet */ |
| 294 | SPS_TIMER_OP_READ, |
| 295 | }; |
| 296 | |
| 297 | /* |
| 298 | * This enum indicates the inactivity timer operating mode and is an |
| 299 | * argument for the sps_timer_ctrl() function. |
| 300 | */ |
| 301 | enum sps_timer_mode { |
| 302 | SPS_TIMER_MODE_ONESHOT = 0, |
| 303 | /* SPS_TIMER_MODE_PERIODIC, Not supported by hardware yet */ |
| 304 | }; |
| 305 | |
| 306 | /* This enum indicates the cases when callback the user of BAM */ |
| 307 | enum sps_callback_case { |
| 308 | SPS_CALLBACK_BAM_ERROR_IRQ = 1, /* BAM ERROR IRQ */ |
| 309 | SPS_CALLBACK_BAM_HRESP_ERR_IRQ, /* Erroneous HResponse */ |
| 310 | SPS_CALLBACK_BAM_TIMER_IRQ, /* Inactivity timer */ |
| 311 | SPS_CALLBACK_BAM_RES_REQ, /* Request resource */ |
| 312 | SPS_CALLBACK_BAM_RES_REL, /* Release resource */ |
| 313 | SPS_CALLBACK_BAM_POLL, /* To poll each pipe */ |
| 314 | }; |
| 315 | |
| 316 | /* |
| 317 | * This enum indicates the command type in a command element |
| 318 | */ |
| 319 | enum sps_command_type { |
| 320 | SPS_WRITE_COMMAND = 0, |
| 321 | SPS_READ_COMMAND, |
| 322 | }; |
| 323 | |
| 324 | /** |
| 325 | * struct msm_sps_platform_data - SPS Platform specific data. |
| 326 | * @bamdma_restricted_pipes - Bitmask of pipes restricted from local use. |
| 327 | * |
| 328 | */ |
| 329 | struct msm_sps_platform_data { |
| 330 | u32 bamdma_restricted_pipes; |
| 331 | }; |
| 332 | |
| 333 | /** |
| 334 | * This data type corresponds to the native I/O vector (BAM descriptor) |
| 335 | * supported by SPS hardware |
| 336 | * |
| 337 | * @addr - Buffer physical address. |
| 338 | * @size - Buffer size in bytes. |
| 339 | * @flags -Flag bitmask (see SPS_IOVEC_FLAG_ #defines). |
| 340 | * |
| 341 | */ |
| 342 | struct sps_iovec { |
| 343 | u32 addr; |
| 344 | u32 size:16; |
| 345 | u32 flags:16; |
| 346 | }; |
| 347 | |
| 348 | /** |
| 349 | * This data type corresponds to the native Command Element |
| 350 | * supported by SPS hardware |
| 351 | * |
| 352 | * @addr - register address. |
| 353 | * @command - command type. |
| 354 | * @data - for write command: content to be written into peripheral register. |
| 355 | * for read command: dest addr to write peripheral register value to. |
| 356 | * @mask - register mask. |
| 357 | * @reserved - for future usage. |
| 358 | * |
| 359 | */ |
| 360 | struct sps_command_element { |
| 361 | u32 addr:24; |
| 362 | u32 command:8; |
| 363 | u32 data; |
| 364 | u32 mask; |
| 365 | u32 reserved; |
| 366 | }; |
| 367 | |
| 368 | /* |
| 369 | * BAM device's security configuation |
| 370 | */ |
| 371 | struct sps_bam_pipe_sec_config_props { |
| 372 | u32 pipe_mask; |
| 373 | u32 vmid; |
| 374 | }; |
| 375 | |
| 376 | struct sps_bam_sec_config_props { |
| 377 | /* Per-EE configuration - This is a pipe bit mask for each EE */ |
| 378 | struct sps_bam_pipe_sec_config_props ees[SPS_BAM_NUM_EES]; |
| 379 | }; |
| 380 | |
| 381 | /** |
| 382 | * This struct defines a BAM device. The client must memset() this struct to |
| 383 | * zero before writing device information. A value of zero for uninitialized |
| 384 | * values will instruct the SPS driver to use general defaults or |
| 385 | * hardware/BIOS supplied values. |
| 386 | * |
| 387 | * |
| 388 | * @options - See SPS_BAM_OPT_* bit flag. |
| 389 | * @phys_addr - BAM base physical address (not peripheral address). |
| 390 | * @virt_addr - BAM base virtual address. |
| 391 | * @virt_size - For virtual mapping. |
| 392 | * @irq - IRQ enum for use in ISR vector install. |
| 393 | * @num_pipes - number of pipes. Can be read from hardware. |
| 394 | * @summing_threshold - BAM event threshold. |
| 395 | * |
| 396 | * @periph_class - Peripheral device enumeration class. |
| 397 | * @periph_dev_id - Peripheral global device ID. |
| 398 | * @periph_phys_addr - Peripheral base physical address, for BAM-DMA only. |
| 399 | * @periph_virt_addr - Peripheral base virtual address. |
| 400 | * @periph_virt_size - Size for virtual mapping. |
| 401 | * |
| 402 | * @callback - callback function for BAM user. |
| 403 | * @user - pointer to user data. |
| 404 | * |
| 405 | * @event_threshold - Pipe event threshold. |
| 406 | * @desc_size - Size (bytes) of descriptor FIFO. |
| 407 | * @data_size - Size (bytes) of data FIFO. |
| 408 | * @desc_mem_id - Heap ID for default descriptor FIFO allocations. |
| 409 | * @data_mem_id - Heap ID for default data FIFO allocations. |
| 410 | * |
| 411 | * @manage - BAM device management flags (see SPS_BAM_MGR_*). |
| 412 | * @restricted_pipes - Bitmask of pipes restricted from local use. |
| 413 | * @ee - Local execution environment index. |
| 414 | * |
| 415 | * @irq_gen_addr - MTI interrupt generation address. This configuration only |
| 416 | * applies to BAM rev 1 and 2 hardware. MTIs are only supported on BAMs when |
| 417 | * global config is controlled by a remote processor. |
| 418 | * NOTE: This address must correspond to the MTI associated with the "irq" IRQ |
| 419 | * enum specified above. |
| 420 | * |
| 421 | * @sec_config - must be set to SPS_BAM_SEC_DO_CONFIG to perform BAM security |
| 422 | * configuration. Only the processor that manages the BAM is allowed to |
| 423 | * perform the configuration. The global (top-level) BAM interrupt will be |
| 424 | * assigned to the EE of the processor that manages the BAM. |
| 425 | * |
| 426 | * @p_sec_config_props - BAM device's security configuation |
| 427 | * |
| 428 | */ |
| 429 | struct sps_bam_props { |
| 430 | |
| 431 | /* BAM device properties. */ |
| 432 | |
| 433 | u32 options; |
| 434 | phys_addr_t phys_addr; |
Rama Krishna Phani A | 9c9b4b0 | 2017-06-16 17:57:45 +0530 | [diff] [blame] | 435 | void __iomem *virt_addr; |
Amir Levy | 85fdcb6 | 2016-11-15 15:37:14 +0200 | [diff] [blame] | 436 | u32 virt_size; |
| 437 | u32 irq; |
| 438 | u32 num_pipes; |
| 439 | u32 summing_threshold; |
| 440 | |
| 441 | /* Peripheral device properties */ |
| 442 | |
| 443 | u32 periph_class; |
| 444 | u32 periph_dev_id; |
| 445 | phys_addr_t periph_phys_addr; |
| 446 | void *periph_virt_addr; |
| 447 | u32 periph_virt_size; |
| 448 | |
| 449 | /* Connection pipe parameter defaults. */ |
| 450 | |
| 451 | u32 event_threshold; |
| 452 | u32 desc_size; |
| 453 | u32 data_size; |
| 454 | u32 desc_mem_id; |
| 455 | u32 data_mem_id; |
| 456 | |
| 457 | /* Feedback to BAM user */ |
| 458 | void (*callback)(enum sps_callback_case, void *); |
| 459 | void *user; |
| 460 | |
| 461 | /* Security properties */ |
| 462 | |
| 463 | u32 manage; |
| 464 | u32 restricted_pipes; |
| 465 | u32 ee; |
| 466 | |
| 467 | /* Log Level property */ |
| 468 | u32 ipc_loglevel; |
| 469 | |
| 470 | /* BAM MTI interrupt generation */ |
| 471 | |
| 472 | u32 irq_gen_addr; |
| 473 | |
| 474 | /* Security configuration properties */ |
| 475 | |
| 476 | u32 sec_config; |
| 477 | struct sps_bam_sec_config_props *p_sec_config_props; |
| 478 | |
| 479 | /* Logging control */ |
| 480 | |
| 481 | bool constrained_logging; |
| 482 | u32 logging_number; |
| 483 | }; |
| 484 | |
| 485 | /** |
| 486 | * This struct specifies memory buffer properties. |
| 487 | * |
| 488 | * @base - Buffer virtual address. |
| 489 | * @phys_base - Buffer physical address. |
| 490 | * @size - Specifies buffer size (or maximum size). |
| 491 | * @min_size - If non-zero, specifies buffer minimum size. |
| 492 | * |
| 493 | */ |
| 494 | struct sps_mem_buffer { |
| 495 | void *base; |
| 496 | phys_addr_t phys_base; |
| 497 | unsigned long iova; |
| 498 | u32 size; |
| 499 | u32 min_size; |
| 500 | }; |
| 501 | |
| 502 | /** |
| 503 | * This struct defines a connection's end point and is used as the argument |
| 504 | * for the sps_connect(), sps_get_config(), and sps_set_config() functions. |
| 505 | * For system mode pipe, use SPS_DEV_HANDLE_MEM for the end point that |
| 506 | * corresponds to system memory. |
| 507 | * |
| 508 | * The client can force SPS to reserve a specific pipe on a BAM. |
| 509 | * If the pipe is in use, the sps_connect/set_config() will fail. |
| 510 | * |
| 511 | * @source - Source BAM. |
| 512 | * @src_pipe_index - BAM pipe index, 0 to 30. |
| 513 | * @destination - Destination BAM. |
| 514 | * @dest_pipe_index - BAM pipe index, 0 to 30. |
| 515 | * |
| 516 | * @mode - specifies which end (source or destination) of the connection will |
| 517 | * be controlled/referenced by the client. |
| 518 | * |
| 519 | * @config - This value is for future use and should be set to |
| 520 | * SPS_CONFIG_DEFAULT or left as default from sps_get_config(). |
| 521 | * |
| 522 | * @options - OR'd connection end point options (see SPS_O defines). |
| 523 | * |
| 524 | * WARNING: The memory provided should be physically contiguous and non-cached. |
| 525 | * The user can use one of the following: |
| 526 | * 1. sps_alloc_mem() - allocated from pipe-memory. |
| 527 | * 2. dma_alloc_coherent() - allocate coherent DMA memory. |
| 528 | * 3. dma_map_single() - for using memory allocated by kmalloc(). |
| 529 | * |
| 530 | * @desc - Descriptor FIFO. |
| 531 | * @data - Data FIFO (BAM-to-BAM mode only). |
| 532 | * |
| 533 | * @event_thresh - Pipe event threshold or derivative. |
| 534 | * @lock_group - The lock group this pipe belongs to. |
| 535 | * |
| 536 | * @sps_reserved - Reserved word - client must not modify. |
| 537 | * |
| 538 | */ |
| 539 | struct sps_connect { |
| 540 | unsigned long source; |
| 541 | unsigned long source_iova; |
| 542 | u32 src_pipe_index; |
| 543 | unsigned long destination; |
| 544 | unsigned long dest_iova; |
| 545 | u32 dest_pipe_index; |
| 546 | |
| 547 | enum sps_mode mode; |
| 548 | |
| 549 | u32 config; |
| 550 | |
| 551 | enum sps_option options; |
| 552 | |
| 553 | struct sps_mem_buffer desc; |
| 554 | struct sps_mem_buffer data; |
| 555 | |
| 556 | u32 event_thresh; |
| 557 | |
| 558 | u32 lock_group; |
| 559 | |
| 560 | /* SETPEND/MTI interrupt generation parameters */ |
| 561 | |
| 562 | u32 irq_gen_addr; |
| 563 | u32 irq_gen_data; |
| 564 | |
| 565 | u32 sps_reserved; |
| 566 | |
| 567 | }; |
| 568 | |
| 569 | /** |
| 570 | * This struct defines a satellite connection's end point. The client of the |
| 571 | * SPS driver on the satellite processor must call sps_get_config() to |
| 572 | * initialize a struct sps_connect, then copy the values from the struct |
| 573 | * sps_satellite to the struct sps_connect before making the sps_connect() |
| 574 | * call to the satellite SPS driver. |
| 575 | * |
| 576 | */ |
| 577 | struct sps_satellite { |
| 578 | /** |
| 579 | * These values must be copied to either the source or destination |
| 580 | * corresponding values in the connect struct. |
| 581 | */ |
| 582 | phys_addr_t dev; |
| 583 | u32 pipe_index; |
| 584 | |
| 585 | /** |
| 586 | * These values must be copied to the corresponding values in the |
| 587 | * connect struct |
| 588 | */ |
| 589 | u32 config; |
| 590 | enum sps_option options; |
| 591 | |
| 592 | }; |
| 593 | |
| 594 | /** |
| 595 | * This struct defines parameters for allocation of a BAM DMA channel. The |
| 596 | * client must memset() this struct to zero before writing allocation |
| 597 | * information. A value of zero for uninitialized values will instruct |
| 598 | * the SPS driver to use defaults or "don't care". |
| 599 | * |
| 600 | * @dev - Associated BAM device handle, or SPS_DEV_HANDLE_DMA. |
| 601 | * |
| 602 | * @src_owner - Source owner processor ID. |
| 603 | * @dest_owner - Destination owner processor ID. |
| 604 | * |
| 605 | */ |
| 606 | struct sps_alloc_dma_chan { |
| 607 | unsigned long dev; |
| 608 | |
| 609 | /* BAM DMA channel configuration parameters */ |
| 610 | |
| 611 | u32 threshold; |
| 612 | enum sps_dma_priority priority; |
| 613 | |
| 614 | /** |
| 615 | * Owner IDs are global host processor identifiers used by the system |
| 616 | * SROT when establishing execution environments. |
| 617 | */ |
| 618 | u32 src_owner; |
| 619 | u32 dest_owner; |
| 620 | |
| 621 | }; |
| 622 | |
| 623 | /** |
| 624 | * This struct defines parameters for an allocated BAM DMA channel. |
| 625 | * |
| 626 | * @dev - BAM DMA device handle. |
| 627 | * @dest_pipe_index - Destination/input/write pipe index. |
| 628 | * @src_pipe_index - Source/output/read pipe index. |
| 629 | * |
| 630 | */ |
| 631 | struct sps_dma_chan { |
| 632 | unsigned long dev; |
| 633 | u32 dest_pipe_index; |
| 634 | u32 src_pipe_index; |
| 635 | }; |
| 636 | |
| 637 | /** |
| 638 | * This struct is an argument passed payload when triggering a callback event |
| 639 | * object registered for an SPS connection end point. |
| 640 | * |
| 641 | * @user - Pointer registered with sps_register_event(). |
| 642 | * |
| 643 | * @event_id - Which event. |
| 644 | * |
| 645 | * @iovec - The associated I/O vector. If the end point is a system-mode |
| 646 | * producer, the size will reflect the actual number of bytes written to the |
| 647 | * buffer by the pipe. NOTE: If this I/O vector was part of a set submitted to |
| 648 | * sps_transfer(), then the vector array itself will be updated with all of |
| 649 | * the actual counts. |
| 650 | * |
| 651 | * @user - Pointer registered with the transfer. |
| 652 | * |
| 653 | */ |
| 654 | struct sps_event_notify { |
| 655 | void *user; |
| 656 | |
| 657 | enum sps_event event_id; |
| 658 | |
| 659 | /* Data associated with the event */ |
| 660 | |
| 661 | union { |
| 662 | /* Data for SPS_EVENT_IRQ */ |
| 663 | struct { |
| 664 | u32 mask; |
| 665 | } irq; |
| 666 | |
| 667 | /* Data for SPS_EVENT_EOT or SPS_EVENT_DESC_DONE */ |
| 668 | |
| 669 | struct { |
| 670 | struct sps_iovec iovec; |
| 671 | void *user; |
| 672 | } transfer; |
| 673 | |
| 674 | /* Data for SPS_EVENT_ERROR */ |
| 675 | |
| 676 | struct { |
| 677 | u32 status; |
| 678 | } err; |
| 679 | |
| 680 | } data; |
| 681 | }; |
| 682 | |
| 683 | /** |
| 684 | * This struct defines a event registration parameters and is used as the |
| 685 | * argument for the sps_register_event() function. |
| 686 | * |
| 687 | * @options - Event options that will trigger the event object. |
| 688 | * @mode - Event trigger mode. |
| 689 | * |
| 690 | * @xfer_done - a pointer to a completion object. NULL if not in use. |
| 691 | * |
| 692 | * @callback - a callback to call on completion. NULL if not in use. |
| 693 | * |
| 694 | * @user - User pointer that will be provided in event callback data. |
| 695 | * |
| 696 | */ |
| 697 | struct sps_register_event { |
| 698 | enum sps_option options; |
| 699 | enum sps_trigger mode; |
| 700 | struct completion *xfer_done; |
| 701 | void (*callback)(struct sps_event_notify *notify); |
| 702 | void *user; |
| 703 | }; |
| 704 | |
| 705 | /** |
| 706 | * This struct defines a system memory transfer's parameters and is used as the |
| 707 | * argument for the sps_transfer() function. |
| 708 | * |
| 709 | * @iovec_phys - Physical address of I/O vectors buffer. |
| 710 | * @iovec - Pointer to I/O vectors buffer. |
| 711 | * @iovec_count - Number of I/O vectors. |
| 712 | * @user - User pointer passed in callback event. |
| 713 | * |
| 714 | */ |
| 715 | struct sps_transfer { |
| 716 | phys_addr_t iovec_phys; |
| 717 | struct sps_iovec *iovec; |
| 718 | u32 iovec_count; |
| 719 | void *user; |
| 720 | }; |
| 721 | |
| 722 | /** |
| 723 | * This struct defines a timer control operation parameters and is used as an |
| 724 | * argument for the sps_timer_ctrl() function. |
| 725 | * |
| 726 | * @op - Timer control operation. |
| 727 | * @timeout_msec - Inactivity timeout (msec). |
| 728 | * |
| 729 | */ |
| 730 | struct sps_timer_ctrl { |
| 731 | enum sps_timer_op op; |
| 732 | |
| 733 | /** |
| 734 | * The following configuration parameters must be set when the timer |
| 735 | * control operation is SPS_TIMER_OP_CONFIG. |
| 736 | */ |
| 737 | enum sps_timer_mode mode; |
| 738 | u32 timeout_msec; |
| 739 | }; |
| 740 | |
| 741 | /** |
| 742 | * This struct defines a timer control operation result and is used as an |
| 743 | * argument for the sps_timer_ctrl() function. |
| 744 | */ |
| 745 | struct sps_timer_result { |
| 746 | u32 current_timer; |
| 747 | }; |
| 748 | |
| 749 | |
| 750 | /*---------------------------------------------------------------------------- |
| 751 | * Functions specific to sps interface |
| 752 | * --------------------------------------------------------------------------- |
| 753 | */ |
| 754 | struct sps_pipe; /* Forward declaration */ |
| 755 | |
| 756 | #ifdef CONFIG_SPS |
| 757 | /** |
| 758 | * Register a BAM device |
| 759 | * |
| 760 | * This function registers a BAM device with the SPS driver. For each |
| 761 | *peripheral that includes a BAM, the peripheral driver must register |
| 762 | * the BAM with the SPS driver. |
| 763 | * |
| 764 | * A requirement is that the peripheral driver must remain attached |
| 765 | * to the SPS driver until the BAM is deregistered. Otherwise, the |
| 766 | * system may attempt to unload the SPS driver. BAM registrations would |
| 767 | * be lost. |
| 768 | * |
| 769 | * @bam_props - Pointer to struct for BAM device properties. |
| 770 | * |
| 771 | * @dev_handle - Device handle will be written to this location (output). |
| 772 | * |
| 773 | * @return 0 on success, negative value on error |
| 774 | * |
| 775 | */ |
| 776 | int sps_register_bam_device(const struct sps_bam_props *bam_props, |
| 777 | unsigned long *dev_handle); |
| 778 | |
| 779 | /** |
| 780 | * Deregister a BAM device |
| 781 | * |
| 782 | * This function deregisters a BAM device from the SPS driver. The peripheral |
| 783 | * driver should deregister a BAM when the peripheral driver is shut down or |
| 784 | * when BAM use should be disabled. |
| 785 | * |
| 786 | * A BAM cannot be deregistered if any of its pipes is in an active connection. |
| 787 | * |
| 788 | * When all BAMs have been deregistered, the system is free to unload the |
| 789 | * SPS driver. |
| 790 | * |
| 791 | * @dev_handle - BAM device handle. |
| 792 | * |
| 793 | * @return 0 on success, negative value on error |
| 794 | * |
| 795 | */ |
| 796 | int sps_deregister_bam_device(unsigned long dev_handle); |
| 797 | |
| 798 | /** |
| 799 | * Allocate client state context |
| 800 | * |
| 801 | * This function allocate and initializes a client state context struct. |
| 802 | * |
| 803 | * @return pointer to client state context |
| 804 | * |
| 805 | */ |
| 806 | struct sps_pipe *sps_alloc_endpoint(void); |
| 807 | |
| 808 | /** |
| 809 | * Free client state context |
| 810 | * |
| 811 | * This function de-initializes and free a client state context struct. |
| 812 | * |
| 813 | * @ctx - client context for SPS connection end point |
| 814 | * |
| 815 | * @return 0 on success, negative value on error |
| 816 | * |
| 817 | */ |
| 818 | int sps_free_endpoint(struct sps_pipe *h); |
| 819 | |
| 820 | /** |
| 821 | * Get the configuration parameters for an SPS connection end point |
| 822 | * |
| 823 | * This function retrieves the configuration parameters for an SPS connection |
| 824 | * end point. |
| 825 | * This function may be called before the end point is connected (before |
| 826 | * sps_connect is called). This allows the client to specify parameters before |
| 827 | * the connection is established. |
| 828 | * |
| 829 | * The client must call this function to fill it's struct sps_connect |
| 830 | * struct before modifying values and passing the struct to sps_set_config(). |
| 831 | * |
| 832 | * @h - client context for SPS connection end point |
| 833 | * |
| 834 | * @config - Pointer to buffer for the end point's configuration parameters. |
| 835 | * Must not be NULL. |
| 836 | * |
| 837 | * @return 0 on success, negative value on error |
| 838 | * |
| 839 | */ |
| 840 | int sps_get_config(struct sps_pipe *h, struct sps_connect *config); |
| 841 | |
| 842 | /** |
| 843 | * Allocate memory from the SPS Pipe-Memory. |
| 844 | * |
| 845 | * @h - client context for SPS connection end point |
| 846 | * |
| 847 | * @mem - memory type - N/A. |
| 848 | * |
| 849 | * @mem_buffer - Pointer to struct for allocated memory properties. |
| 850 | * |
| 851 | * @return 0 on success, negative value on error |
| 852 | * |
| 853 | */ |
| 854 | int sps_alloc_mem(struct sps_pipe *h, enum sps_mem mem, |
| 855 | struct sps_mem_buffer *mem_buffer); |
| 856 | |
| 857 | /** |
| 858 | * Free memory from the SPS Pipe-Memory. |
| 859 | * |
| 860 | * @h - client context for SPS connection end point |
| 861 | * |
| 862 | * @mem_buffer - Pointer to struct for allocated memory properties. |
| 863 | * |
| 864 | * @return 0 on success, negative value on error |
| 865 | * |
| 866 | */ |
| 867 | int sps_free_mem(struct sps_pipe *h, struct sps_mem_buffer *mem_buffer); |
| 868 | |
| 869 | /** |
| 870 | * Connect an SPS connection end point |
| 871 | * |
| 872 | * This function creates a connection between two SPS peripherals or between |
| 873 | * an SPS peripheral and the local host processor (via system memory, end |
| 874 | *point SPS_DEV_HANDLE_MEM). Establishing the connection includes |
| 875 | * initialization of the SPS hardware and allocation of any other connection |
| 876 | * resources (buffer memory, etc.). |
| 877 | * |
| 878 | * This function requires the client to specify both the source and |
| 879 | * destination end points of the SPS connection. However, the handle |
| 880 | * returned applies only to the end point of the connection that the client |
| 881 | * controls. The end point under control must be specified by the |
| 882 | * enum sps_mode mode argument, either SPS_MODE_SRC, SPS_MODE_DEST, or |
| 883 | * SPS_MODE_CTL. Note that SPS_MODE_CTL is only supported for I/O |
| 884 | * accelerator connections, and only a limited set of control operations are |
| 885 | * allowed (TBD). |
| 886 | * |
| 887 | * For a connection involving system memory |
| 888 | * (SPS_DEV_HANDLE_MEM), the peripheral end point must be |
| 889 | * specified. For example, SPS_MODE_SRC must be specified for a |
| 890 | * BAM-to-system connection, since the BAM pipe is the data |
| 891 | * producer. |
| 892 | * |
| 893 | * For a specific peripheral-to-peripheral connection, there may be more than |
| 894 | * one required configuration. For example, there might be high-performance |
| 895 | * and low-power configurations for a connection between the two peripherals. |
| 896 | * The config argument allows the client to specify different configurations, |
| 897 | * which may require different system resource allocations and hardware |
| 898 | * initialization. |
| 899 | * |
| 900 | * A client is allowed to create one and only one connection for its |
| 901 | * struct sps_pipe. The handle is used to identify the connection end point |
| 902 | * in subsequent SPS driver calls. A specific connection source or |
| 903 | * destination end point can be associated with one and only one |
| 904 | * struct sps_pipe. |
| 905 | * |
| 906 | * The client must establish an open device handle to the SPS. To do so, the |
| 907 | * client must attach to the SPS driver and open the SPS device by calling |
| 908 | * the following functions. |
| 909 | * |
| 910 | * @h - client context for SPS connection end point |
| 911 | * |
| 912 | * @connect - Pointer to connection parameters |
| 913 | * |
| 914 | * @return 0 on success, negative value on error |
| 915 | * |
| 916 | */ |
| 917 | int sps_connect(struct sps_pipe *h, struct sps_connect *connect); |
| 918 | |
| 919 | /** |
| 920 | * Disconnect an SPS connection end point |
| 921 | * |
| 922 | * This function disconnects an SPS connection end point. |
| 923 | * The SPS hardware associated with that end point will be disabled. |
| 924 | * For a connection involving system memory (SPS_DEV_HANDLE_MEM), all |
| 925 | * connection resources are deallocated. For a peripheral-to-peripheral |
| 926 | * connection, the resources associated with the connection will not be |
| 927 | * deallocated until both end points are closed. |
| 928 | * |
| 929 | * The client must call sps_connect() for the handle before calling |
| 930 | * this function. |
| 931 | * |
| 932 | * @h - client context for SPS connection end point |
| 933 | * |
| 934 | * @return 0 on success, negative value on error |
| 935 | * |
| 936 | */ |
| 937 | int sps_disconnect(struct sps_pipe *h); |
| 938 | |
| 939 | /** |
| 940 | * Register an event object for an SPS connection end point |
| 941 | * |
| 942 | * This function registers a callback event object for an SPS connection end |
| 943 | *point. The registered event object will be triggered for the set of |
| 944 | * events specified in reg->options that are enabled for the end point. |
| 945 | * |
| 946 | * There can only be one registered event object for each event. If an event |
| 947 | * object is already registered for an event, it will be replaced. If |
| 948 | *reg->event handle is NULL, then any registered event object for the |
| 949 | * event will be deregistered. Option bits in reg->options not associated |
| 950 | * with events are ignored. |
| 951 | * |
| 952 | * The client must call sps_connect() for the handle before calling |
| 953 | * this function. |
| 954 | * |
| 955 | * @h - client context for SPS connection end point |
| 956 | * |
| 957 | * @reg - Pointer to event registration parameters |
| 958 | * |
| 959 | * @return 0 on success, negative value on error |
| 960 | * |
| 961 | */ |
| 962 | int sps_register_event(struct sps_pipe *h, struct sps_register_event *reg); |
| 963 | |
| 964 | /** |
| 965 | * Perform a single DMA transfer on an SPS connection end point |
| 966 | * |
| 967 | * This function submits a DMA transfer request consisting of a single buffer |
| 968 | * for an SPS connection end point associated with a peripheral-to/from-memory |
| 969 | * connection. The request will be submitted immediately to hardware if the |
| 970 | * hardware is idle (data flow off, no other pending transfers). Otherwise, it |
| 971 | * will be queued for later handling in the SPS driver work loop. |
| 972 | * |
| 973 | * The data buffer must be DMA ready. The client is responsible for insuring |
| 974 | *physically contiguous memory, cache maintenance, and memory barrier. For |
| 975 | * more information, see Appendix A. |
| 976 | * |
| 977 | * The client must not modify the data buffer until the completion indication is |
| 978 | * received. |
| 979 | * |
| 980 | * This function cannot be used if transfer queuing is disabled (see option |
| 981 | * SPS_O_NO_Q). The client must set the SPS_O_EOT option to receive a callback |
| 982 | * event trigger when the transfer is complete. The SPS driver will insure the |
| 983 | * appropriate flags in the I/O vectors are set to generate the completion |
| 984 | * indication. |
| 985 | * |
| 986 | * The return value from this function may indicate that an error occurred. |
| 987 | * Possible causes include invalid arguments. |
| 988 | * |
| 989 | * @h - client context for SPS connection end point |
| 990 | * |
| 991 | * @addr - Physical address of buffer to transfer. |
| 992 | * |
| 993 | * WARNING: The memory provided should be physically contiguous and |
| 994 | * non-cached. |
| 995 | * |
| 996 | * The user can use one of the following: |
| 997 | * 1. sps_alloc_mem() - allocated from pipe-memory. |
| 998 | * 2. dma_alloc_coherent() - allocate DMA memory. |
| 999 | * 3. dma_map_single() for memory allocated by kmalloc(). |
| 1000 | * |
| 1001 | * @size - Size in bytes of buffer to transfer |
| 1002 | * |
| 1003 | * @user - User pointer that will be returned to user as part of |
| 1004 | * event payload |
| 1005 | * |
| 1006 | * @return 0 on success, negative value on error |
| 1007 | * |
| 1008 | */ |
| 1009 | int sps_transfer_one(struct sps_pipe *h, phys_addr_t addr, u32 size, |
| 1010 | void *user, u32 flags); |
| 1011 | |
| 1012 | /** |
| 1013 | * Read event queue for an SPS connection end point |
| 1014 | * |
| 1015 | * This function reads event queue for an SPS connection end point. |
| 1016 | * |
| 1017 | * @h - client context for SPS connection end point |
| 1018 | * |
| 1019 | * @event - pointer to client's event data buffer |
| 1020 | * |
| 1021 | * @return 0 on success, negative value on error |
| 1022 | * |
| 1023 | */ |
| 1024 | int sps_get_event(struct sps_pipe *h, struct sps_event_notify *event); |
| 1025 | |
| 1026 | /** |
| 1027 | * Get processed I/O vector (completed transfers) |
| 1028 | * |
| 1029 | * This function fetches the next processed I/O vector. |
| 1030 | * |
| 1031 | * @h - client context for SPS connection end point |
| 1032 | * |
| 1033 | * @iovec - Pointer to I/O vector struct (output). |
| 1034 | * This struct will be zeroed if there are no more processed I/O vectors. |
| 1035 | * |
| 1036 | * @return 0 on success, negative value on error |
| 1037 | * |
| 1038 | */ |
| 1039 | int sps_get_iovec(struct sps_pipe *h, struct sps_iovec *iovec); |
| 1040 | |
| 1041 | /** |
| 1042 | * Enable an SPS connection end point |
| 1043 | * |
| 1044 | * This function enables an SPS connection end point. |
| 1045 | * |
| 1046 | * @h - client context for SPS connection end point |
| 1047 | * |
| 1048 | * @return 0 on success, negative value on error |
| 1049 | * |
| 1050 | */ |
| 1051 | int sps_flow_on(struct sps_pipe *h); |
| 1052 | |
| 1053 | /** |
| 1054 | * Disable an SPS connection end point |
| 1055 | * |
| 1056 | * This function disables an SPS connection end point. |
| 1057 | * |
| 1058 | * @h - client context for SPS connection end point |
| 1059 | * |
| 1060 | * @mode - Desired mode for disabling pipe data flow |
| 1061 | * |
| 1062 | * @return 0 on success, negative value on error |
| 1063 | * |
| 1064 | */ |
| 1065 | int sps_flow_off(struct sps_pipe *h, enum sps_flow_off mode); |
| 1066 | |
| 1067 | /** |
| 1068 | * Perform a Multiple DMA transfer on an SPS connection end point |
| 1069 | * |
| 1070 | * This function submits a DMA transfer request for an SPS connection end point |
| 1071 | * associated with a peripheral-to/from-memory connection. The request will be |
| 1072 | * submitted immediately to hardware if the hardware is idle (data flow off, no |
| 1073 | * other pending transfers). Otherwise, it will be queued for later handling in |
| 1074 | * the SPS driver work loop. |
| 1075 | * |
| 1076 | * The data buffers referenced by the I/O vectors must be DMA ready. |
| 1077 | * The client is responsible for insuring physically contiguous memory, |
| 1078 | * any cache maintenance, and memory barrier. For more information, |
| 1079 | * see Appendix A. |
| 1080 | * |
| 1081 | * The I/O vectors must specify physical addresses for the referenced buffers. |
| 1082 | * |
| 1083 | * The client must not modify the data buffers referenced by I/O vectors until |
| 1084 | * the completion indication is received. |
| 1085 | * |
| 1086 | * If transfer queuing is disabled (see option SPS_O_NO_Q), the client is |
| 1087 | * responsible for setting the appropriate flags in the I/O vectors to generate |
| 1088 | * the completion indication. Also, the client is responsible for enabling the |
| 1089 | * appropriate connection callback event options for completion indication (see |
| 1090 | * sps_connect(), sps_set_config()). |
| 1091 | * |
| 1092 | * If transfer queuing is enabled, the client must set the SPS_O_EOT option to |
| 1093 | * receive a callback event trigger when the transfer is complete. The SPS |
| 1094 | * driver will insure the appropriate flags in the I/O vectors are set to |
| 1095 | * generate the completion indication. The client must not set any flags in the |
| 1096 | * I/O vectors, as this may cause the SPS driver to become out of sync with the |
| 1097 | * hardware. |
| 1098 | * |
| 1099 | * The return value from this function may indicate that an error occurred. |
| 1100 | * Possible causes include invalid arguments. If transfer queuing is disabled, |
| 1101 | * an error will occur if the pipe is already processing a transfer. |
| 1102 | * |
| 1103 | * @h - client context for SPS connection end point |
| 1104 | * |
| 1105 | * @transfer - Pointer to transfer parameter struct |
| 1106 | * |
| 1107 | * @return 0 on success, negative value on error |
| 1108 | * |
| 1109 | */ |
| 1110 | int sps_transfer(struct sps_pipe *h, struct sps_transfer *transfer); |
| 1111 | |
| 1112 | /** |
| 1113 | * Determine whether an SPS connection end point FIFO is empty |
| 1114 | * |
| 1115 | * This function returns the empty state of an SPS connection end point. |
| 1116 | * |
| 1117 | * @h - client context for SPS connection end point |
| 1118 | * |
| 1119 | * @empty - pointer to client's empty status word (boolean) |
| 1120 | * |
| 1121 | * @return 0 on success, negative value on error |
| 1122 | * |
| 1123 | */ |
| 1124 | int sps_is_pipe_empty(struct sps_pipe *h, u32 *empty); |
| 1125 | |
| 1126 | /** |
| 1127 | * Reset an SPS BAM device |
| 1128 | * |
| 1129 | * This function resets an SPS BAM device. |
| 1130 | * |
| 1131 | * @dev - device handle for the BAM |
| 1132 | * |
| 1133 | * @return 0 on success, negative value on error |
| 1134 | * |
| 1135 | */ |
| 1136 | int sps_device_reset(unsigned long dev); |
| 1137 | |
| 1138 | /** |
| 1139 | * Set the configuration parameters for an SPS connection end point |
| 1140 | * |
| 1141 | * This function sets the configuration parameters for an SPS connection |
| 1142 | * end point. This function may be called before the end point is connected |
| 1143 | * (before sps_connect is called). This allows the client to specify |
| 1144 | *parameters before the connection is established. The client is allowed |
| 1145 | * to pre-allocate resources and override driver defaults. |
| 1146 | * |
| 1147 | * The client must call sps_get_config() to fill it's struct sps_connect |
| 1148 | * struct before modifying values and passing the struct to this function. |
| 1149 | * Only those parameters that differ from the current configuration will |
| 1150 | * be processed. |
| 1151 | * |
| 1152 | * @h - client context for SPS connection end point |
| 1153 | * |
| 1154 | * @config - Pointer to the end point's new configuration parameters. |
| 1155 | * |
| 1156 | * @return 0 on success, negative value on error |
| 1157 | * |
| 1158 | */ |
| 1159 | int sps_set_config(struct sps_pipe *h, struct sps_connect *config); |
| 1160 | |
| 1161 | /** |
| 1162 | * Set ownership of an SPS connection end point |
| 1163 | * |
| 1164 | * This function sets the ownership of an SPS connection end point to |
| 1165 | * either local (default) or non-local. This function is used to |
| 1166 | * retrieve the struct sps_connect data that must be used by a |
| 1167 | * satellite processor when calling sps_connect(). |
| 1168 | * |
| 1169 | * Non-local ownership is only possible/meaningful on the processor |
| 1170 | * that controls resource allocations (apps processor). Setting ownership |
| 1171 | * to non-local on a satellite processor will fail. |
| 1172 | * |
| 1173 | * Setting ownership from non-local to local will succeed only if the |
| 1174 | * owning satellite processor has properly brought the end point to |
| 1175 | * an idle condition. |
| 1176 | * |
| 1177 | * This function will succeed if the connection end point is already in |
| 1178 | * the specified ownership state. |
| 1179 | * |
| 1180 | * @h - client context for SPS connection end point |
| 1181 | * |
| 1182 | * @owner - New ownership of the connection end point |
| 1183 | * |
| 1184 | * @connect - Pointer to buffer for satellite processor connect data. |
| 1185 | * Can be NULL to avoid retrieving the connect data. Will be ignored |
| 1186 | * if the end point ownership is set to local. |
| 1187 | * |
| 1188 | * @return 0 on success, negative value on error |
| 1189 | * |
| 1190 | */ |
| 1191 | int sps_set_owner(struct sps_pipe *h, enum sps_owner owner, |
| 1192 | struct sps_satellite *connect); |
| 1193 | |
| 1194 | #ifdef CONFIG_SPS_SUPPORT_BAMDMA |
| 1195 | /** |
| 1196 | * Allocate a BAM DMA channel |
| 1197 | * |
| 1198 | * This function allocates a BAM DMA channel. A "BAM DMA" is a special |
| 1199 | * DMA peripheral with a BAM front end. The DMA peripheral acts as a conduit |
| 1200 | * for data to flow into a consumer pipe and then out of a producer pipe. |
| 1201 | * It's primarily purpose is to serve as a path for interprocessor communication |
| 1202 | * that allows each processor to control and protect it's own memory space. |
| 1203 | * |
| 1204 | * @alloc - Pointer to struct for BAM DMA channel allocation properties. |
| 1205 | * |
| 1206 | * @chan - Allocated channel information will be written to this |
| 1207 | * location (output). |
| 1208 | * |
| 1209 | * @return 0 on success, negative value on error |
| 1210 | * |
| 1211 | */ |
| 1212 | int sps_alloc_dma_chan(const struct sps_alloc_dma_chan *alloc, |
| 1213 | struct sps_dma_chan *chan); |
| 1214 | |
| 1215 | /** |
| 1216 | * Free a BAM DMA channel |
| 1217 | * |
| 1218 | * This function frees a BAM DMA channel. |
| 1219 | * |
| 1220 | * @chan - Pointer to information for channel to free |
| 1221 | * |
| 1222 | * @return 0 on success, negative value on error |
| 1223 | * |
| 1224 | */ |
| 1225 | int sps_free_dma_chan(struct sps_dma_chan *chan); |
| 1226 | |
| 1227 | /** |
| 1228 | * Get the BAM handle for BAM-DMA. |
| 1229 | * |
| 1230 | * The BAM handle should be use as source/destination in the sps_connect(). |
| 1231 | * |
| 1232 | * @return handle on success, zero on error |
| 1233 | * |
| 1234 | */ |
| 1235 | unsigned long sps_dma_get_bam_handle(void); |
| 1236 | |
| 1237 | /** |
| 1238 | * Free the BAM handle for BAM-DMA. |
| 1239 | * |
| 1240 | */ |
| 1241 | void sps_dma_free_bam_handle(unsigned long h); |
| 1242 | #else |
| 1243 | static inline int sps_alloc_dma_chan(const struct sps_alloc_dma_chan *alloc, |
| 1244 | struct sps_dma_chan *chan) |
| 1245 | { |
| 1246 | return -EPERM; |
| 1247 | } |
| 1248 | |
| 1249 | static inline int sps_free_dma_chan(struct sps_dma_chan *chan) |
| 1250 | { |
| 1251 | return -EPERM; |
| 1252 | } |
| 1253 | |
| 1254 | static inline unsigned long sps_dma_get_bam_handle(void) |
| 1255 | { |
| 1256 | return 0; |
| 1257 | } |
| 1258 | |
| 1259 | static inline void sps_dma_free_bam_handle(unsigned long h) |
| 1260 | { |
| 1261 | } |
| 1262 | #endif |
| 1263 | |
| 1264 | /** |
| 1265 | * Get number of free transfer entries for an SPS connection end point |
| 1266 | * |
| 1267 | * This function returns the number of free transfer entries for an |
| 1268 | * SPS connection end point. |
| 1269 | * |
| 1270 | * @h - client context for SPS connection end point |
| 1271 | * |
| 1272 | * @count - pointer to count status |
| 1273 | * |
| 1274 | * @return 0 on success, negative value on error |
| 1275 | * |
| 1276 | */ |
| 1277 | int sps_get_free_count(struct sps_pipe *h, u32 *count); |
| 1278 | |
| 1279 | /** |
| 1280 | * Perform timer control |
| 1281 | * |
| 1282 | * This function performs timer control operations. |
| 1283 | * |
| 1284 | * @h - client context for SPS connection end point |
| 1285 | * |
| 1286 | * @timer_ctrl - Pointer to timer control specification |
| 1287 | * |
| 1288 | * @timer_result - Pointer to buffer for timer operation result. |
| 1289 | * This argument can be NULL if no result is expected for the operation. |
| 1290 | * If non-NULL, the current timer value will always provided. |
| 1291 | * |
| 1292 | * @return 0 on success, negative value on error |
| 1293 | * |
| 1294 | */ |
| 1295 | int sps_timer_ctrl(struct sps_pipe *h, |
| 1296 | struct sps_timer_ctrl *timer_ctrl, |
| 1297 | struct sps_timer_result *timer_result); |
| 1298 | |
| 1299 | /** |
| 1300 | * Find the handle of a BAM device based on the physical address |
| 1301 | * |
| 1302 | * This function finds a BAM device in the BAM registration list that |
| 1303 | * matches the specified physical address, and returns its handle. |
| 1304 | * |
| 1305 | * @phys_addr - physical address of the BAM |
| 1306 | * |
| 1307 | * @h - device handle of the BAM |
| 1308 | * |
| 1309 | * @return 0 on success, negative value on error |
| 1310 | * |
| 1311 | */ |
| 1312 | int sps_phy2h(phys_addr_t phys_addr, unsigned long *handle); |
| 1313 | |
| 1314 | /** |
| 1315 | * Setup desc/data FIFO for bam-to-bam connection |
| 1316 | * |
| 1317 | * @mem_buffer - Pointer to struct for allocated memory properties. |
| 1318 | * |
| 1319 | * @addr - address of FIFO |
| 1320 | * |
| 1321 | * @size - FIFO size |
| 1322 | * |
| 1323 | * @use_offset - use address offset instead of absolute address |
| 1324 | * |
| 1325 | * @return 0 on success, negative value on error |
| 1326 | * |
| 1327 | */ |
| 1328 | int sps_setup_bam2bam_fifo(struct sps_mem_buffer *mem_buffer, |
| 1329 | u32 addr, u32 size, int use_offset); |
| 1330 | |
| 1331 | /** |
| 1332 | * Get the number of unused descriptors in the descriptor FIFO |
| 1333 | * of a pipe |
| 1334 | * |
| 1335 | * @h - client context for SPS connection end point |
| 1336 | * |
| 1337 | * @desc_num - number of unused descriptors |
| 1338 | * |
| 1339 | * @return 0 on success, negative value on error |
| 1340 | * |
| 1341 | */ |
| 1342 | int sps_get_unused_desc_num(struct sps_pipe *h, u32 *desc_num); |
| 1343 | |
| 1344 | /** |
| 1345 | * Get the debug info of BAM registers and descriptor FIFOs |
| 1346 | * |
| 1347 | * @dev - BAM device handle |
| 1348 | * |
| 1349 | * @option - debugging option |
| 1350 | * |
| 1351 | * @para - parameter used for an option (such as pipe combination) |
| 1352 | * |
| 1353 | * @tb_sel - testbus selection |
| 1354 | * |
| 1355 | * @desc_sel - selection of descriptors |
| 1356 | * |
| 1357 | * @return 0 on success, negative value on error |
| 1358 | * |
| 1359 | */ |
| 1360 | int sps_get_bam_debug_info(unsigned long dev, u32 option, u32 para, |
| 1361 | u32 tb_sel, u32 desc_sel); |
| 1362 | |
| 1363 | /** |
| 1364 | * Vote for or relinquish BAM DMA clock |
| 1365 | * |
| 1366 | * @clk_on - to turn on or turn off the clock |
| 1367 | * |
| 1368 | * @return 0 on success, negative value on error |
| 1369 | * |
| 1370 | */ |
| 1371 | int sps_ctrl_bam_dma_clk(bool clk_on); |
| 1372 | |
| 1373 | /* |
| 1374 | * sps_pipe_reset - reset a pipe of a BAM. |
| 1375 | * @dev: BAM device handle |
| 1376 | * @pipe: pipe index |
| 1377 | * |
| 1378 | * This function resets a pipe of a BAM. |
| 1379 | * |
| 1380 | * Return: 0 on success, negative value on error |
| 1381 | */ |
| 1382 | int sps_pipe_reset(unsigned long dev, u32 pipe); |
| 1383 | |
| 1384 | /* |
| 1385 | * sps_pipe_disable - disable a pipe of a BAM. |
| 1386 | * @dev: BAM device handle |
| 1387 | * @pipe: pipe index |
| 1388 | * |
| 1389 | * This function disables a pipe of a BAM. |
| 1390 | * |
| 1391 | * Return: 0 on success, negative value on error |
| 1392 | */ |
| 1393 | int sps_pipe_disable(unsigned long dev, u32 pipe); |
| 1394 | |
| 1395 | /* |
| 1396 | * sps_pipe_pending_desc - checking pending descriptor. |
| 1397 | * @dev: BAM device handle |
| 1398 | * @pipe: pipe index |
| 1399 | * @pending: indicate if there is any pending descriptor. |
| 1400 | * |
| 1401 | * This function checks if a pipe of a BAM has any pending descriptor. |
| 1402 | * |
| 1403 | * Return: 0 on success, negative value on error |
| 1404 | */ |
| 1405 | int sps_pipe_pending_desc(unsigned long dev, u32 pipe, bool *pending); |
| 1406 | |
| 1407 | /* |
| 1408 | * sps_bam_process_irq - process IRQ of a BAM. |
| 1409 | * @dev: BAM device handle |
| 1410 | * |
| 1411 | * This function processes any pending IRQ of a BAM. |
| 1412 | * |
| 1413 | * Return: 0 on success, negative value on error |
| 1414 | */ |
| 1415 | int sps_bam_process_irq(unsigned long dev); |
| 1416 | |
| 1417 | /* |
| 1418 | * sps_get_bam_addr - get address info of a BAM. |
| 1419 | * @dev: BAM device handle |
| 1420 | * @base: beginning address |
| 1421 | * @size: address range size |
| 1422 | * |
| 1423 | * This function returns the address info of a BAM. |
| 1424 | * |
| 1425 | * Return: 0 on success, negative value on error |
| 1426 | */ |
| 1427 | int sps_get_bam_addr(unsigned long dev, phys_addr_t *base, |
| 1428 | u32 *size); |
| 1429 | |
| 1430 | /* |
| 1431 | * sps_pipe_inject_zlt - inject a ZLT with EOT. |
| 1432 | * @dev: BAM device handle |
| 1433 | * @pipe_index: pipe index |
| 1434 | * |
| 1435 | * This function injects a ZLT with EOT for a pipe of a BAM. |
| 1436 | * |
| 1437 | * Return: 0 on success, negative value on error |
| 1438 | */ |
| 1439 | int sps_pipe_inject_zlt(unsigned long dev, u32 pipe_index); |
| 1440 | #else |
| 1441 | static inline int sps_register_bam_device(const struct sps_bam_props |
| 1442 | *bam_props, unsigned long *dev_handle) |
| 1443 | { |
| 1444 | return -EPERM; |
| 1445 | } |
| 1446 | |
| 1447 | static inline int sps_deregister_bam_device(unsigned long dev_handle) |
| 1448 | { |
| 1449 | return -EPERM; |
| 1450 | } |
| 1451 | |
| 1452 | static inline struct sps_pipe *sps_alloc_endpoint(void) |
| 1453 | { |
| 1454 | return NULL; |
| 1455 | } |
| 1456 | |
| 1457 | static inline int sps_free_endpoint(struct sps_pipe *h) |
| 1458 | { |
| 1459 | return -EPERM; |
| 1460 | } |
| 1461 | |
| 1462 | static inline int sps_get_config(struct sps_pipe *h, struct sps_connect *config) |
| 1463 | { |
| 1464 | return -EPERM; |
| 1465 | } |
| 1466 | |
| 1467 | static inline int sps_alloc_mem(struct sps_pipe *h, enum sps_mem mem, |
| 1468 | struct sps_mem_buffer *mem_buffer) |
| 1469 | { |
| 1470 | return -EPERM; |
| 1471 | } |
| 1472 | |
| 1473 | static inline int sps_free_mem(struct sps_pipe *h, |
| 1474 | struct sps_mem_buffer *mem_buffer) |
| 1475 | { |
| 1476 | return -EPERM; |
| 1477 | } |
| 1478 | |
| 1479 | static inline int sps_connect(struct sps_pipe *h, struct sps_connect *connect) |
| 1480 | { |
| 1481 | return -EPERM; |
| 1482 | } |
| 1483 | |
| 1484 | static inline int sps_disconnect(struct sps_pipe *h) |
| 1485 | { |
| 1486 | return -EPERM; |
| 1487 | } |
| 1488 | |
| 1489 | static inline int sps_register_event(struct sps_pipe *h, |
| 1490 | struct sps_register_event *reg) |
| 1491 | { |
| 1492 | return -EPERM; |
| 1493 | } |
| 1494 | |
| 1495 | static inline int sps_transfer_one(struct sps_pipe *h, phys_addr_t addr, |
| 1496 | u32 size, void *user, u32 flags) |
| 1497 | { |
| 1498 | return -EPERM; |
| 1499 | } |
| 1500 | |
| 1501 | static inline int sps_get_event(struct sps_pipe *h, |
| 1502 | struct sps_event_notify *event) |
| 1503 | { |
| 1504 | return -EPERM; |
| 1505 | } |
| 1506 | |
| 1507 | static inline int sps_get_iovec(struct sps_pipe *h, struct sps_iovec *iovec) |
| 1508 | { |
| 1509 | return -EPERM; |
| 1510 | } |
| 1511 | |
| 1512 | static inline int sps_flow_on(struct sps_pipe *h) |
| 1513 | { |
| 1514 | return -EPERM; |
| 1515 | } |
| 1516 | |
| 1517 | static inline int sps_flow_off(struct sps_pipe *h, enum sps_flow_off mode) |
| 1518 | { |
| 1519 | return -EPERM; |
| 1520 | } |
| 1521 | |
| 1522 | static inline int sps_transfer(struct sps_pipe *h, |
| 1523 | struct sps_transfer *transfer) |
| 1524 | { |
| 1525 | return -EPERM; |
| 1526 | } |
| 1527 | |
| 1528 | static inline int sps_is_pipe_empty(struct sps_pipe *h, u32 *empty) |
| 1529 | { |
| 1530 | return -EPERM; |
| 1531 | } |
| 1532 | |
| 1533 | static inline int sps_device_reset(unsigned long dev) |
| 1534 | { |
| 1535 | return -EPERM; |
| 1536 | } |
| 1537 | |
| 1538 | static inline int sps_set_config(struct sps_pipe *h, struct sps_connect *config) |
| 1539 | { |
| 1540 | return -EPERM; |
| 1541 | } |
| 1542 | |
| 1543 | static inline int sps_set_owner(struct sps_pipe *h, enum sps_owner owner, |
| 1544 | struct sps_satellite *connect) |
| 1545 | { |
| 1546 | return -EPERM; |
| 1547 | } |
| 1548 | |
| 1549 | static inline int sps_get_free_count(struct sps_pipe *h, u32 *count) |
| 1550 | { |
| 1551 | return -EPERM; |
| 1552 | } |
| 1553 | |
| 1554 | static inline int sps_alloc_dma_chan(const struct sps_alloc_dma_chan *alloc, |
| 1555 | struct sps_dma_chan *chan) |
| 1556 | { |
| 1557 | return -EPERM; |
| 1558 | } |
| 1559 | |
| 1560 | static inline int sps_free_dma_chan(struct sps_dma_chan *chan) |
| 1561 | { |
| 1562 | return -EPERM; |
| 1563 | } |
| 1564 | |
| 1565 | static inline unsigned long sps_dma_get_bam_handle(void) |
| 1566 | { |
| 1567 | return 0; |
| 1568 | } |
| 1569 | |
| 1570 | static inline void sps_dma_free_bam_handle(unsigned long h) |
| 1571 | { |
| 1572 | } |
| 1573 | |
| 1574 | static inline int sps_timer_ctrl(struct sps_pipe *h, |
| 1575 | struct sps_timer_ctrl *timer_ctrl, |
| 1576 | struct sps_timer_result *timer_result) |
| 1577 | { |
| 1578 | return -EPERM; |
| 1579 | } |
| 1580 | |
| 1581 | static inline int sps_phy2h(phys_addr_t phys_addr, unsigned long *handle) |
| 1582 | { |
| 1583 | return -EPERM; |
| 1584 | } |
| 1585 | |
| 1586 | static inline int sps_setup_bam2bam_fifo(struct sps_mem_buffer *mem_buffer, |
| 1587 | u32 addr, u32 size, int use_offset) |
| 1588 | { |
| 1589 | return -EPERM; |
| 1590 | } |
| 1591 | |
| 1592 | static inline int sps_get_unused_desc_num(struct sps_pipe *h, u32 *desc_num) |
| 1593 | { |
| 1594 | return -EPERM; |
| 1595 | } |
| 1596 | |
| 1597 | static inline int sps_get_bam_debug_info(unsigned long dev, u32 option, |
| 1598 | u32 para, u32 tb_sel, u32 desc_sel) |
| 1599 | { |
| 1600 | return -EPERM; |
| 1601 | } |
| 1602 | |
| 1603 | static inline int sps_ctrl_bam_dma_clk(bool clk_on) |
| 1604 | { |
| 1605 | return -EPERM; |
| 1606 | } |
| 1607 | |
| 1608 | static inline int sps_pipe_reset(unsigned long dev, u32 pipe) |
| 1609 | { |
| 1610 | return -EPERM; |
| 1611 | } |
| 1612 | |
| 1613 | static inline int sps_pipe_disable(unsigned long dev, u32 pipe) |
| 1614 | { |
| 1615 | return -EPERM; |
| 1616 | } |
| 1617 | |
| 1618 | static inline int sps_pipe_pending_desc(unsigned long dev, u32 pipe, |
| 1619 | bool *pending) |
| 1620 | { |
| 1621 | return -EPERM; |
| 1622 | } |
| 1623 | |
| 1624 | static inline int sps_bam_process_irq(unsigned long dev) |
| 1625 | { |
| 1626 | return -EPERM; |
| 1627 | } |
| 1628 | |
| 1629 | static inline int sps_get_bam_addr(unsigned long dev, phys_addr_t *base, |
| 1630 | u32 *size) |
| 1631 | { |
| 1632 | return -EPERM; |
| 1633 | } |
| 1634 | |
| 1635 | static inline int sps_pipe_inject_zlt(unsigned long dev, u32 pipe_index) |
| 1636 | { |
| 1637 | return -EPERM; |
| 1638 | } |
| 1639 | #endif |
| 1640 | |
| 1641 | #endif /* _SPS_H_ */ |