Benjamin Chan | 59a0605 | 2017-01-12 18:06:03 -0500 | [diff] [blame] | 1 | /* Copyright (c) 2015-2017, The Linux Foundation. All rights reserved. |
Adrian Salido-Moreno | 5c15038 | 2016-04-06 09:29:37 -0700 | [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 | #define pr_fmt(fmt) "%s: " fmt, __func__ |
| 13 | |
| 14 | #include <linux/types.h> |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/slab.h> |
| 17 | #include <linux/uaccess.h> |
| 18 | #include <linux/debugfs.h> |
| 19 | |
| 20 | #include "sde_rotator_debug.h" |
| 21 | #include "sde_rotator_base.h" |
| 22 | #include "sde_rotator_core.h" |
| 23 | #include "sde_rotator_dev.h" |
| 24 | |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 25 | #ifdef CONFIG_MSM_SDE_ROTATOR_EVTLOG_DEBUG |
| 26 | #define SDE_EVTLOG_DEFAULT_ENABLE 1 |
| 27 | #else |
| 28 | #define SDE_EVTLOG_DEFAULT_ENABLE 0 |
| 29 | #endif |
| 30 | #define SDE_EVTLOG_DEFAULT_PANIC 1 |
| 31 | #define SDE_EVTLOG_DEFAULT_REGDUMP SDE_ROT_DBG_DUMP_IN_MEM |
| 32 | #define SDE_EVTLOG_DEFAULT_VBIF_DBGBUSDUMP SDE_ROT_DBG_DUMP_IN_MEM |
Benjamin Chan | 2d6411a | 2017-03-28 18:01:53 -0400 | [diff] [blame] | 33 | #define SDE_EVTLOG_DEFAULT_ROT_DBGBUSDUMP SDE_ROT_DBG_DUMP_IN_MEM |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 34 | |
| 35 | /* |
| 36 | * evtlog will print this number of entries when it is called through |
| 37 | * sysfs node or panic. This prevents kernel log from evtlog message |
| 38 | * flood. |
| 39 | */ |
| 40 | #define SDE_ROT_EVTLOG_PRINT_ENTRY 256 |
| 41 | |
| 42 | /* |
| 43 | * evtlog keeps this number of entries in memory for debug purpose. This |
| 44 | * number must be greater than print entry to prevent out of bound evtlog |
| 45 | * entry array access. |
| 46 | */ |
| 47 | #define SDE_ROT_EVTLOG_ENTRY (SDE_ROT_EVTLOG_PRINT_ENTRY * 4) |
| 48 | #define SDE_ROT_EVTLOG_MAX_DATA 15 |
| 49 | #define SDE_ROT_EVTLOG_BUF_MAX 512 |
| 50 | #define SDE_ROT_EVTLOG_BUF_ALIGN 32 |
| 51 | #define SDE_ROT_DEBUG_BASE_MAX 10 |
| 52 | |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 53 | #define SDE_ROT_DEFAULT_BASE_REG_CNT 0x100 |
| 54 | #define GROUP_BYTES 4 |
| 55 | #define ROW_BYTES 16 |
| 56 | |
Benjamin Chan | 2d6411a | 2017-03-28 18:01:53 -0400 | [diff] [blame] | 57 | #define SDE_ROT_TEST_MASK(id, tp) ((id << 4) | (tp << 1) | BIT(0)) |
| 58 | |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 59 | static DEFINE_SPINLOCK(sde_rot_xlock); |
| 60 | |
| 61 | /* |
| 62 | * tlog - EVTLOG entry structure |
| 63 | * @counter - EVTLOG entriy counter |
| 64 | * @time - timestamp of EVTLOG entry |
| 65 | * @name - function name of EVTLOG entry |
| 66 | * @line - line number of EVTLOG entry |
| 67 | * @data - EVTLOG data contents |
| 68 | * @data_cnt - number of data contents |
| 69 | * @pid - pid of current calling thread |
| 70 | */ |
| 71 | struct tlog { |
| 72 | u32 counter; |
| 73 | s64 time; |
| 74 | const char *name; |
| 75 | int line; |
| 76 | u32 data[SDE_ROT_EVTLOG_MAX_DATA]; |
| 77 | u32 data_cnt; |
| 78 | int pid; |
| 79 | }; |
| 80 | |
| 81 | /* |
| 82 | * sde_rot_dbg_evtlog - EVTLOG debug data structure |
| 83 | * @logs - EVTLOG entries |
| 84 | * @first - first entry index in the EVTLOG |
| 85 | * @last - last entry index in the EVTLOG |
| 86 | * @curr - curr entry index in the EVTLOG |
| 87 | * @evtlog - EVTLOG debugfs handle |
| 88 | * @evtlog_enable - boolean indicates EVTLOG enable/disable |
| 89 | * @panic_on_err - boolean indicates issue panic after EVTLOG dump |
| 90 | * @enable_reg_dump - control in-log/memory dump for rotator registers |
| 91 | * @enable_vbif_dbgbus_dump - control in-log/memory dump for VBIF debug bus |
Benjamin Chan | 2d6411a | 2017-03-28 18:01:53 -0400 | [diff] [blame] | 92 | * @enable_rot_dbgbus_dump - control in-log/memroy dump for rotator debug bus |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 93 | * @evtlog_dump_work - schedule work strucutre for timeout handler |
| 94 | * @work_dump_reg - storage for register dump control in schedule work |
| 95 | * @work_panic - storage for panic control in schedule work |
| 96 | * @work_vbif_dbgbus - storage for VBIF debug bus control in schedule work |
Benjamin Chan | 2d6411a | 2017-03-28 18:01:53 -0400 | [diff] [blame] | 97 | * @work_rot_dbgbus - storage for rotator debug bus control in schedule work |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 98 | * @nrt_vbif_dbgbus_dump - memory buffer for VBIF debug bus dumping |
Benjamin Chan | 2d6411a | 2017-03-28 18:01:53 -0400 | [diff] [blame] | 99 | * @rot_dbgbus_dump - memory buffer for rotator debug bus dumping |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 100 | * @reg_dump_array - memory buffer for rotator registers dumping |
| 101 | */ |
| 102 | struct sde_rot_dbg_evtlog { |
| 103 | struct tlog logs[SDE_ROT_EVTLOG_ENTRY]; |
| 104 | u32 first; |
| 105 | u32 last; |
| 106 | u32 curr; |
| 107 | struct dentry *evtlog; |
| 108 | u32 evtlog_enable; |
| 109 | u32 panic_on_err; |
| 110 | u32 enable_reg_dump; |
| 111 | u32 enable_vbif_dbgbus_dump; |
Benjamin Chan | 2d6411a | 2017-03-28 18:01:53 -0400 | [diff] [blame] | 112 | u32 enable_rot_dbgbus_dump; |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 113 | struct work_struct evtlog_dump_work; |
| 114 | bool work_dump_reg; |
| 115 | bool work_panic; |
| 116 | bool work_vbif_dbgbus; |
Benjamin Chan | 2d6411a | 2017-03-28 18:01:53 -0400 | [diff] [blame] | 117 | bool work_rot_dbgbus; |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 118 | u32 *nrt_vbif_dbgbus_dump; /* address for the nrt vbif debug bus dump */ |
Benjamin Chan | 2d6411a | 2017-03-28 18:01:53 -0400 | [diff] [blame] | 119 | u32 *rot_dbgbus_dump; |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 120 | u32 *reg_dump_array[SDE_ROT_DEBUG_BASE_MAX]; |
| 121 | } sde_rot_dbg_evtlog; |
| 122 | |
Benjamin Chan | 2d6411a | 2017-03-28 18:01:53 -0400 | [diff] [blame] | 123 | static void sde_rot_dump_debug_bus(u32 bus_dump_flag, u32 **dump_mem) |
| 124 | { |
| 125 | struct sde_rot_data_type *mdata = sde_rot_get_mdata(); |
| 126 | bool in_log, in_mem; |
| 127 | u32 *dump_addr = NULL; |
| 128 | u32 status = 0; |
| 129 | struct sde_rot_debug_bus *head; |
| 130 | phys_addr_t phys = 0; |
| 131 | int i; |
| 132 | u32 offset; |
| 133 | void __iomem *base; |
| 134 | |
| 135 | in_log = (bus_dump_flag & SDE_ROT_DBG_DUMP_IN_LOG); |
| 136 | in_mem = (bus_dump_flag & SDE_ROT_DBG_DUMP_IN_MEM); |
| 137 | base = mdata->sde_io.base; |
| 138 | |
| 139 | if (!base || !mdata->rot_dbg_bus || !mdata->rot_dbg_bus_size) |
| 140 | return; |
| 141 | |
| 142 | pr_info("======== SDE Rotator Debug bus DUMP =========\n"); |
| 143 | |
| 144 | if (in_mem) { |
| 145 | if (!(*dump_mem)) |
| 146 | *dump_mem = dma_alloc_coherent(&mdata->pdev->dev, |
| 147 | mdata->rot_dbg_bus_size * 4 * sizeof(u32), |
| 148 | &phys, GFP_KERNEL); |
| 149 | |
| 150 | if (*dump_mem) { |
| 151 | dump_addr = *dump_mem; |
| 152 | pr_info("%s: start_addr:0x%pK end_addr:0x%pK\n", |
| 153 | __func__, dump_addr, |
| 154 | dump_addr + (u32)mdata->rot_dbg_bus_size * 16); |
| 155 | } else { |
| 156 | in_mem = false; |
| 157 | pr_err("dump_mem: allocation fails\n"); |
| 158 | } |
| 159 | } |
| 160 | |
| 161 | sde_smmu_ctrl(1); |
| 162 | |
| 163 | for (i = 0; i < mdata->rot_dbg_bus_size; i++) { |
| 164 | head = mdata->rot_dbg_bus + i; |
| 165 | writel_relaxed(SDE_ROT_TEST_MASK(head->block_id, head->test_id), |
| 166 | base + head->wr_addr); |
| 167 | wmb(); /* make sure test bits were written */ |
| 168 | |
| 169 | offset = head->wr_addr + 0x4; |
| 170 | |
| 171 | status = readl_relaxed(base + offset); |
| 172 | |
| 173 | if (in_log) |
| 174 | pr_err("waddr=0x%x blk=%d tst=%d val=0x%x\n", |
| 175 | head->wr_addr, head->block_id, head->test_id, |
| 176 | status); |
| 177 | |
| 178 | if (dump_addr && in_mem) { |
| 179 | dump_addr[i*4] = head->wr_addr; |
| 180 | dump_addr[i*4 + 1] = head->block_id; |
| 181 | dump_addr[i*4 + 2] = head->test_id; |
| 182 | dump_addr[i*4 + 3] = status; |
| 183 | } |
| 184 | |
| 185 | /* Disable debug bus once we are done */ |
| 186 | writel_relaxed(0, base + head->wr_addr); |
| 187 | } |
| 188 | |
| 189 | sde_smmu_ctrl(0); |
| 190 | |
| 191 | pr_info("========End Debug bus=========\n"); |
| 192 | } |
| 193 | |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 194 | /* |
| 195 | * sde_rot_evtlog_is_enabled - helper function for checking EVTLOG |
| 196 | * enable/disable |
| 197 | * @flag - EVTLOG option flag |
| 198 | */ |
| 199 | static inline bool sde_rot_evtlog_is_enabled(u32 flag) |
| 200 | { |
| 201 | return (flag & sde_rot_dbg_evtlog.evtlog_enable) || |
| 202 | (flag == SDE_ROT_EVTLOG_ALL && |
| 203 | sde_rot_dbg_evtlog.evtlog_enable); |
| 204 | } |
| 205 | |
| 206 | /* |
| 207 | * __vbif_debug_bus - helper function for VBIF debug bus dump |
| 208 | * @head - VBIF debug bus data structure |
| 209 | * @vbif_base - VBIF IO mapped address |
| 210 | * @dump_addr - output buffer for memory dump option |
| 211 | * @in_log - boolean indicates in-log dump option |
| 212 | */ |
| 213 | static void __vbif_debug_bus(struct sde_rot_vbif_debug_bus *head, |
| 214 | void __iomem *vbif_base, u32 *dump_addr, bool in_log) |
| 215 | { |
| 216 | int i, j; |
| 217 | u32 val; |
| 218 | |
| 219 | if (!dump_addr && !in_log) |
| 220 | return; |
| 221 | |
| 222 | for (i = 0; i < head->block_cnt; i++) { |
| 223 | writel_relaxed(1 << (i + head->bit_offset), |
| 224 | vbif_base + head->block_bus_addr); |
| 225 | /* make sure that current bus blcok enable */ |
| 226 | wmb(); |
| 227 | for (j = 0; j < head->test_pnt_cnt; j++) { |
| 228 | writel_relaxed(j, vbif_base + head->block_bus_addr + 4); |
| 229 | /* make sure that test point is enabled */ |
| 230 | wmb(); |
| 231 | val = readl_relaxed(vbif_base + MMSS_VBIF_TEST_BUS_OUT); |
| 232 | if (dump_addr) { |
| 233 | *dump_addr++ = head->block_bus_addr; |
| 234 | *dump_addr++ = i; |
| 235 | *dump_addr++ = j; |
| 236 | *dump_addr++ = val; |
| 237 | } |
| 238 | if (in_log) |
| 239 | pr_err("testpoint:%x arb/xin id=%d index=%d val=0x%x\n", |
| 240 | head->block_bus_addr, i, j, val); |
| 241 | } |
| 242 | } |
| 243 | } |
| 244 | |
| 245 | /* |
| 246 | * sde_rot_dump_vbif_debug_bus - VBIF debug bus dump |
| 247 | * @bus_dump_flag - dump flag controlling in-log/memory dump option |
| 248 | * @dump_mem - output buffer for memory dump location |
| 249 | */ |
| 250 | static void sde_rot_dump_vbif_debug_bus(u32 bus_dump_flag, |
| 251 | u32 **dump_mem) |
| 252 | { |
| 253 | struct sde_rot_data_type *mdata = sde_rot_get_mdata(); |
| 254 | bool in_log, in_mem; |
| 255 | u32 *dump_addr = NULL; |
| 256 | u32 value; |
| 257 | struct sde_rot_vbif_debug_bus *head; |
| 258 | phys_addr_t phys = 0; |
| 259 | int i, list_size = 0; |
| 260 | void __iomem *vbif_base; |
| 261 | struct sde_rot_vbif_debug_bus *dbg_bus; |
| 262 | u32 bus_size; |
| 263 | |
| 264 | pr_info("======== NRT VBIF Debug bus DUMP =========\n"); |
| 265 | vbif_base = mdata->vbif_nrt_io.base; |
| 266 | dbg_bus = mdata->nrt_vbif_dbg_bus; |
| 267 | bus_size = mdata->nrt_vbif_dbg_bus_size; |
| 268 | |
| 269 | if (!vbif_base || !dbg_bus || !bus_size) |
| 270 | return; |
| 271 | |
| 272 | /* allocate memory for each test point */ |
| 273 | for (i = 0; i < bus_size; i++) { |
| 274 | head = dbg_bus + i; |
| 275 | list_size += (head->block_cnt * head->test_pnt_cnt); |
| 276 | } |
| 277 | |
| 278 | /* 4 bytes * 4 entries for each test point*/ |
| 279 | list_size *= 16; |
| 280 | |
| 281 | in_log = (bus_dump_flag & SDE_ROT_DBG_DUMP_IN_LOG); |
| 282 | in_mem = (bus_dump_flag & SDE_ROT_DBG_DUMP_IN_MEM); |
| 283 | |
| 284 | if (in_mem) { |
| 285 | if (!(*dump_mem)) |
| 286 | *dump_mem = dma_alloc_coherent(&mdata->pdev->dev, |
| 287 | list_size, &phys, GFP_KERNEL); |
| 288 | |
| 289 | if (*dump_mem) { |
| 290 | dump_addr = *dump_mem; |
| 291 | pr_info("%s: start_addr:0x%pK end_addr:0x%pK\n", |
| 292 | __func__, dump_addr, dump_addr + list_size); |
| 293 | } else { |
| 294 | in_mem = false; |
| 295 | pr_err("dump_mem: allocation fails\n"); |
| 296 | } |
| 297 | } |
| 298 | |
| 299 | sde_smmu_ctrl(1); |
| 300 | |
| 301 | value = readl_relaxed(vbif_base + MMSS_VBIF_CLKON); |
| 302 | writel_relaxed(value | BIT(1), vbif_base + MMSS_VBIF_CLKON); |
| 303 | |
| 304 | /* make sure that vbif core is on */ |
| 305 | wmb(); |
| 306 | |
| 307 | for (i = 0; i < bus_size; i++) { |
| 308 | head = dbg_bus + i; |
| 309 | |
| 310 | writel_relaxed(0, vbif_base + head->disable_bus_addr); |
| 311 | writel_relaxed(BIT(0), vbif_base + MMSS_VBIF_TEST_BUS_OUT_CTRL); |
| 312 | /* make sure that other bus is off */ |
| 313 | wmb(); |
| 314 | |
| 315 | __vbif_debug_bus(head, vbif_base, dump_addr, in_log); |
| 316 | if (dump_addr) |
| 317 | dump_addr += (head->block_cnt * head->test_pnt_cnt * 4); |
| 318 | } |
| 319 | |
| 320 | sde_smmu_ctrl(0); |
| 321 | |
| 322 | pr_info("========End VBIF Debug bus=========\n"); |
| 323 | } |
| 324 | |
| 325 | /* |
| 326 | * sde_rot_dump_reg - helper function for dumping rotator register set content |
| 327 | * @dump_name - register set name |
| 328 | * @reg_dump_flag - dumping flag controlling in-log/memory dump location |
Benjamin Chan | 59a0605 | 2017-01-12 18:06:03 -0500 | [diff] [blame] | 329 | * @access - access type, sde registers or vbif registers |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 330 | * @addr - starting address offset for dumping |
| 331 | * @len - range of the register set |
| 332 | * @dump_mem - output buffer for memory dump location option |
| 333 | */ |
Benjamin Chan | 59a0605 | 2017-01-12 18:06:03 -0500 | [diff] [blame] | 334 | void sde_rot_dump_reg(const char *dump_name, u32 reg_dump_flag, |
| 335 | enum sde_rot_regdump_access access, u32 addr, |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 336 | int len, u32 **dump_mem) |
| 337 | { |
| 338 | struct sde_rot_data_type *mdata = sde_rot_get_mdata(); |
| 339 | bool in_log, in_mem; |
| 340 | u32 *dump_addr = NULL; |
| 341 | phys_addr_t phys = 0; |
| 342 | int i; |
Benjamin Chan | 59a0605 | 2017-01-12 18:06:03 -0500 | [diff] [blame] | 343 | void __iomem *base; |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 344 | |
| 345 | in_log = (reg_dump_flag & SDE_ROT_DBG_DUMP_IN_LOG); |
| 346 | in_mem = (reg_dump_flag & SDE_ROT_DBG_DUMP_IN_MEM); |
| 347 | |
| 348 | pr_debug("reg_dump_flag=%d in_log=%d in_mem=%d\n", |
| 349 | reg_dump_flag, in_log, in_mem); |
| 350 | |
| 351 | if (len % 16) |
| 352 | len += 16; |
| 353 | len /= 16; |
| 354 | |
| 355 | if (in_mem) { |
| 356 | if (!(*dump_mem)) |
| 357 | *dump_mem = dma_alloc_coherent(&mdata->pdev->dev, |
| 358 | len * 16, &phys, GFP_KERNEL); |
| 359 | |
| 360 | if (*dump_mem) { |
| 361 | dump_addr = *dump_mem; |
| 362 | pr_info("%s: start_addr:0x%p end_addr:0x%p reg_addr=0x%X\n", |
| 363 | dump_name, dump_addr, dump_addr + (u32)len * 16, |
| 364 | addr); |
| 365 | } else { |
| 366 | in_mem = false; |
| 367 | pr_err("dump_mem: kzalloc fails!\n"); |
| 368 | } |
| 369 | } |
| 370 | |
Benjamin Chan | 59a0605 | 2017-01-12 18:06:03 -0500 | [diff] [blame] | 371 | base = mdata->sde_io.base; |
| 372 | /* |
| 373 | * VBIF NRT base handling |
| 374 | */ |
| 375 | if (access == SDE_ROT_REGDUMP_VBIF) |
| 376 | base = mdata->vbif_nrt_io.base; |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 377 | |
| 378 | for (i = 0; i < len; i++) { |
| 379 | u32 x0, x4, x8, xc; |
| 380 | |
Benjamin Chan | 59a0605 | 2017-01-12 18:06:03 -0500 | [diff] [blame] | 381 | x0 = readl_relaxed(base + addr+0x0); |
| 382 | x4 = readl_relaxed(base + addr+0x4); |
| 383 | x8 = readl_relaxed(base + addr+0x8); |
| 384 | xc = readl_relaxed(base + addr+0xc); |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 385 | |
| 386 | if (in_log) |
| 387 | pr_info("0x%08X : %08x %08x %08x %08x\n", |
| 388 | addr, x0, x4, x8, xc); |
| 389 | |
| 390 | if (dump_addr && in_mem) { |
| 391 | dump_addr[i*4] = x0; |
| 392 | dump_addr[i*4 + 1] = x4; |
| 393 | dump_addr[i*4 + 2] = x8; |
| 394 | dump_addr[i*4 + 3] = xc; |
| 395 | } |
| 396 | |
| 397 | addr += 16; |
| 398 | } |
| 399 | } |
| 400 | |
| 401 | /* |
| 402 | * sde_rot_dump_reg_all - dumping all SDE rotator registers |
| 403 | */ |
| 404 | static void sde_rot_dump_reg_all(void) |
| 405 | { |
| 406 | struct sde_rot_data_type *mdata = sde_rot_get_mdata(); |
| 407 | struct sde_rot_regdump *head, *regdump; |
| 408 | u32 regdump_size; |
| 409 | int i; |
| 410 | |
| 411 | regdump = mdata->regdump; |
| 412 | regdump_size = mdata->regdump_size; |
| 413 | |
| 414 | if (!regdump || !regdump_size) |
| 415 | return; |
| 416 | |
| 417 | /* Enable clock to rotator if not yet enabled */ |
| 418 | sde_smmu_ctrl(1); |
| 419 | |
| 420 | for (i = 0; (i < regdump_size) && (i < SDE_ROT_DEBUG_BASE_MAX); i++) { |
| 421 | head = ®dump[i]; |
| 422 | |
| 423 | if (head->access == SDE_ROT_REGDUMP_WRITE) { |
| 424 | writel_relaxed(1, mdata->sde_io.base + head->offset); |
| 425 | /* Make sure write go through */ |
| 426 | wmb(); |
| 427 | } else { |
| 428 | sde_rot_dump_reg(head->name, |
| 429 | sde_rot_dbg_evtlog.enable_reg_dump, |
Benjamin Chan | 59a0605 | 2017-01-12 18:06:03 -0500 | [diff] [blame] | 430 | head->access, |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 431 | head->offset, head->len, |
| 432 | &sde_rot_dbg_evtlog.reg_dump_array[i]); |
| 433 | } |
| 434 | } |
| 435 | |
| 436 | /* Disable rotator clock */ |
| 437 | sde_smmu_ctrl(0); |
| 438 | } |
| 439 | |
| 440 | /* |
| 441 | * __sde_rot_evtlog_dump_calc_range - calculate dump range for EVTLOG |
| 442 | */ |
| 443 | static bool __sde_rot_evtlog_dump_calc_range(void) |
| 444 | { |
| 445 | static u32 next; |
| 446 | bool need_dump = true; |
| 447 | unsigned long flags; |
| 448 | struct sde_rot_dbg_evtlog *evtlog = &sde_rot_dbg_evtlog; |
| 449 | |
| 450 | spin_lock_irqsave(&sde_rot_xlock, flags); |
| 451 | |
| 452 | evtlog->first = next; |
| 453 | |
| 454 | if (evtlog->last == evtlog->first) { |
| 455 | need_dump = false; |
| 456 | goto dump_exit; |
| 457 | } |
| 458 | |
| 459 | if (evtlog->last < evtlog->first) { |
| 460 | evtlog->first %= SDE_ROT_EVTLOG_ENTRY; |
| 461 | if (evtlog->last < evtlog->first) |
| 462 | evtlog->last += SDE_ROT_EVTLOG_ENTRY; |
| 463 | } |
| 464 | |
| 465 | if ((evtlog->last - evtlog->first) > SDE_ROT_EVTLOG_PRINT_ENTRY) { |
| 466 | pr_warn("evtlog buffer overflow before dump: %d\n", |
| 467 | evtlog->last - evtlog->first); |
| 468 | evtlog->first = evtlog->last - SDE_ROT_EVTLOG_PRINT_ENTRY; |
| 469 | } |
| 470 | next = evtlog->first + 1; |
| 471 | |
| 472 | dump_exit: |
| 473 | spin_unlock_irqrestore(&sde_rot_xlock, flags); |
| 474 | |
| 475 | return need_dump; |
| 476 | } |
| 477 | |
| 478 | /* |
| 479 | * sde_rot_evtlog_dump_entry - helper function for EVTLOG content dumping |
| 480 | * @evtlog_buf: EVTLOG dump output buffer |
| 481 | * @evtlog_buf_size: EVTLOG output buffer size |
| 482 | */ |
| 483 | static ssize_t sde_rot_evtlog_dump_entry(char *evtlog_buf, |
| 484 | ssize_t evtlog_buf_size) |
| 485 | { |
| 486 | int i; |
| 487 | ssize_t off = 0; |
| 488 | struct tlog *log, *prev_log; |
| 489 | unsigned long flags; |
| 490 | |
| 491 | spin_lock_irqsave(&sde_rot_xlock, flags); |
| 492 | |
| 493 | log = &sde_rot_dbg_evtlog.logs[sde_rot_dbg_evtlog.first % |
| 494 | SDE_ROT_EVTLOG_ENTRY]; |
| 495 | |
| 496 | prev_log = &sde_rot_dbg_evtlog.logs[(sde_rot_dbg_evtlog.first - 1) % |
| 497 | SDE_ROT_EVTLOG_ENTRY]; |
| 498 | |
| 499 | off = snprintf((evtlog_buf + off), (evtlog_buf_size - off), "%s:%-4d", |
| 500 | log->name, log->line); |
| 501 | |
| 502 | if (off < SDE_ROT_EVTLOG_BUF_ALIGN) { |
| 503 | memset((evtlog_buf + off), 0x20, |
| 504 | (SDE_ROT_EVTLOG_BUF_ALIGN - off)); |
| 505 | off = SDE_ROT_EVTLOG_BUF_ALIGN; |
| 506 | } |
| 507 | |
| 508 | off += snprintf((evtlog_buf + off), (evtlog_buf_size - off), |
| 509 | "=>[%-8d:%-11llu:%9llu][%-4d]:", sde_rot_dbg_evtlog.first, |
| 510 | log->time, (log->time - prev_log->time), log->pid); |
| 511 | |
| 512 | for (i = 0; i < log->data_cnt; i++) |
| 513 | off += snprintf((evtlog_buf + off), (evtlog_buf_size - off), |
| 514 | "%x ", log->data[i]); |
| 515 | |
| 516 | off += snprintf((evtlog_buf + off), (evtlog_buf_size - off), "\n"); |
| 517 | |
| 518 | spin_unlock_irqrestore(&sde_rot_xlock, flags); |
| 519 | |
| 520 | return off; |
| 521 | } |
| 522 | |
| 523 | /* |
| 524 | * sde_rot_evtlog_dump_all - Dumping all content in EVTLOG buffer |
| 525 | */ |
| 526 | static void sde_rot_evtlog_dump_all(void) |
| 527 | { |
| 528 | char evtlog_buf[SDE_ROT_EVTLOG_BUF_MAX]; |
| 529 | |
| 530 | while (__sde_rot_evtlog_dump_calc_range()) { |
| 531 | sde_rot_evtlog_dump_entry(evtlog_buf, SDE_ROT_EVTLOG_BUF_MAX); |
| 532 | pr_info("%s", evtlog_buf); |
| 533 | } |
| 534 | } |
| 535 | |
| 536 | /* |
| 537 | * sde_rot_evtlog_dump_open - debugfs open handler for evtlog dump |
| 538 | * @inode: debugfs inode |
| 539 | * @file: file handler |
| 540 | */ |
| 541 | static int sde_rot_evtlog_dump_open(struct inode *inode, struct file *file) |
| 542 | { |
| 543 | /* non-seekable */ |
| 544 | file->f_mode &= ~(FMODE_LSEEK | FMODE_PREAD | FMODE_PWRITE); |
| 545 | file->private_data = inode->i_private; |
| 546 | return 0; |
| 547 | } |
| 548 | |
| 549 | /* |
| 550 | * sde_rot_evtlog_dump_read - debugfs read handler for evtlog dump |
| 551 | * @file: file handler |
| 552 | * @buff: user buffer content for debugfs |
| 553 | * @count: size of user buffer |
| 554 | * @ppos: position offset of user buffer |
| 555 | */ |
| 556 | static ssize_t sde_rot_evtlog_dump_read(struct file *file, char __user *buff, |
| 557 | size_t count, loff_t *ppos) |
| 558 | { |
| 559 | ssize_t len = 0; |
| 560 | char evtlog_buf[SDE_ROT_EVTLOG_BUF_MAX]; |
| 561 | |
| 562 | if (__sde_rot_evtlog_dump_calc_range()) { |
| 563 | len = sde_rot_evtlog_dump_entry(evtlog_buf, |
| 564 | SDE_ROT_EVTLOG_BUF_MAX); |
| 565 | if (copy_to_user(buff, evtlog_buf, len)) |
| 566 | return -EFAULT; |
| 567 | *ppos += len; |
| 568 | } |
| 569 | |
| 570 | return len; |
| 571 | } |
| 572 | |
| 573 | /* |
| 574 | * sde_rot_evtlog_dump_write - debugfs write handler for evtlog dump |
| 575 | * @file: file handler |
| 576 | * @user_buf: user buffer content from debugfs |
| 577 | * @count: size of user buffer |
| 578 | * @ppos: position offset of user buffer |
| 579 | */ |
| 580 | static ssize_t sde_rot_evtlog_dump_write(struct file *file, |
| 581 | const char __user *user_buf, size_t count, loff_t *ppos) |
| 582 | { |
| 583 | sde_rot_evtlog_dump_all(); |
| 584 | |
| 585 | sde_rot_dump_reg_all(); |
| 586 | |
| 587 | if (sde_rot_dbg_evtlog.panic_on_err) |
| 588 | panic("evtlog_dump_write"); |
| 589 | |
| 590 | return count; |
| 591 | } |
| 592 | |
| 593 | /* |
| 594 | * sde_rot_evtlog_dump_helper - helper function for evtlog dump |
| 595 | * @dead: boolean indicates panic after dump |
| 596 | * @panic_name: Panic signature name show up in log |
| 597 | * @dump_rot: boolean indicates rotator register dump |
| 598 | * @dump_vbif_debug_bus: boolean indicates VBIF debug bus dump |
| 599 | */ |
| 600 | static void sde_rot_evtlog_dump_helper(bool dead, const char *panic_name, |
Benjamin Chan | 2d6411a | 2017-03-28 18:01:53 -0400 | [diff] [blame] | 601 | bool dump_rot, bool dump_vbif_debug_bus, bool dump_rot_debug_bus) |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 602 | { |
| 603 | sde_rot_evtlog_dump_all(); |
| 604 | |
Benjamin Chan | 2d6411a | 2017-03-28 18:01:53 -0400 | [diff] [blame] | 605 | if (dump_rot_debug_bus) |
| 606 | sde_rot_dump_debug_bus( |
| 607 | sde_rot_dbg_evtlog.enable_rot_dbgbus_dump, |
| 608 | &sde_rot_dbg_evtlog.rot_dbgbus_dump); |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 609 | |
| 610 | if (dump_vbif_debug_bus) |
| 611 | sde_rot_dump_vbif_debug_bus( |
| 612 | sde_rot_dbg_evtlog.enable_vbif_dbgbus_dump, |
| 613 | &sde_rot_dbg_evtlog.nrt_vbif_dbgbus_dump); |
| 614 | |
Benjamin Chan | 2d6411a | 2017-03-28 18:01:53 -0400 | [diff] [blame] | 615 | /* |
| 616 | * Rotator registers always dump last |
| 617 | */ |
| 618 | if (dump_rot) |
| 619 | sde_rot_dump_reg_all(); |
| 620 | |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 621 | if (dead) |
| 622 | panic(panic_name); |
| 623 | } |
| 624 | |
| 625 | /* |
| 626 | * sde_rot_evtlog_debug_work - schedule work function for evtlog dump |
| 627 | * @work: schedule work structure |
| 628 | */ |
| 629 | static void sde_rot_evtlog_debug_work(struct work_struct *work) |
| 630 | { |
| 631 | sde_rot_evtlog_dump_helper( |
| 632 | sde_rot_dbg_evtlog.work_panic, |
| 633 | "evtlog_workitem", |
| 634 | sde_rot_dbg_evtlog.work_dump_reg, |
Benjamin Chan | 2d6411a | 2017-03-28 18:01:53 -0400 | [diff] [blame] | 635 | sde_rot_dbg_evtlog.work_vbif_dbgbus, |
| 636 | sde_rot_dbg_evtlog.work_rot_dbgbus); |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 637 | } |
| 638 | |
| 639 | /* |
| 640 | * sde_rot_dump_panic - Issue evtlog dump and generic panic |
| 641 | */ |
| 642 | void sde_rot_dump_panic(void) |
| 643 | { |
| 644 | sde_rot_evtlog_dump_all(); |
| 645 | sde_rot_dump_reg_all(); |
| 646 | |
| 647 | panic("sde_rotator"); |
| 648 | } |
| 649 | |
| 650 | /* |
| 651 | * sde_rot_evtlog_tout_handler - log dump timeout handler |
| 652 | * @queue: boolean indicate putting log dump into queue |
| 653 | * @name: function name having timeout |
| 654 | */ |
| 655 | void sde_rot_evtlog_tout_handler(bool queue, const char *name, ...) |
| 656 | { |
| 657 | int i; |
| 658 | bool dead = false; |
| 659 | bool dump_rot = false; |
| 660 | bool dump_vbif_dbgbus = false; |
Benjamin Chan | 2d6411a | 2017-03-28 18:01:53 -0400 | [diff] [blame] | 661 | bool dump_rot_dbgbus = false; |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 662 | char *blk_name = NULL; |
| 663 | va_list args; |
| 664 | |
| 665 | if (!sde_rot_evtlog_is_enabled(SDE_ROT_EVTLOG_DEFAULT)) |
| 666 | return; |
| 667 | |
| 668 | if (queue && work_pending(&sde_rot_dbg_evtlog.evtlog_dump_work)) |
| 669 | return; |
| 670 | |
| 671 | va_start(args, name); |
| 672 | for (i = 0; i < SDE_ROT_EVTLOG_MAX_DATA; i++) { |
| 673 | blk_name = va_arg(args, char*); |
| 674 | if (IS_ERR_OR_NULL(blk_name)) |
| 675 | break; |
| 676 | |
| 677 | if (!strcmp(blk_name, "rot")) |
| 678 | dump_rot = true; |
| 679 | |
| 680 | if (!strcmp(blk_name, "vbif_dbg_bus")) |
| 681 | dump_vbif_dbgbus = true; |
| 682 | |
Benjamin Chan | 2d6411a | 2017-03-28 18:01:53 -0400 | [diff] [blame] | 683 | if (!strcmp(blk_name, "rot_dbg_bus")) |
| 684 | dump_rot_dbgbus = true; |
| 685 | |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 686 | if (!strcmp(blk_name, "panic")) |
| 687 | dead = true; |
| 688 | } |
| 689 | va_end(args); |
| 690 | |
| 691 | if (queue) { |
| 692 | /* schedule work to dump later */ |
| 693 | sde_rot_dbg_evtlog.work_panic = dead; |
| 694 | sde_rot_dbg_evtlog.work_dump_reg = dump_rot; |
| 695 | sde_rot_dbg_evtlog.work_vbif_dbgbus = dump_vbif_dbgbus; |
Benjamin Chan | 2d6411a | 2017-03-28 18:01:53 -0400 | [diff] [blame] | 696 | sde_rot_dbg_evtlog.work_rot_dbgbus = dump_rot_dbgbus; |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 697 | schedule_work(&sde_rot_dbg_evtlog.evtlog_dump_work); |
| 698 | } else { |
| 699 | sde_rot_evtlog_dump_helper(dead, name, dump_rot, |
Benjamin Chan | 2d6411a | 2017-03-28 18:01:53 -0400 | [diff] [blame] | 700 | dump_vbif_dbgbus, dump_rot_dbgbus); |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 701 | } |
| 702 | } |
| 703 | |
| 704 | /* |
| 705 | * sde_rot_evtlog - log contents into memory for dump analysis |
| 706 | * @name: Name of function calling evtlog |
| 707 | * @line: line number of calling function |
| 708 | * @flag: Log control flag |
| 709 | */ |
| 710 | void sde_rot_evtlog(const char *name, int line, int flag, ...) |
| 711 | { |
| 712 | unsigned long flags; |
| 713 | int i, val = 0; |
| 714 | va_list args; |
| 715 | struct tlog *log; |
| 716 | |
| 717 | if (!sde_rot_evtlog_is_enabled(flag)) |
| 718 | return; |
| 719 | |
| 720 | spin_lock_irqsave(&sde_rot_xlock, flags); |
| 721 | log = &sde_rot_dbg_evtlog.logs[sde_rot_dbg_evtlog.curr]; |
| 722 | log->time = ktime_to_us(ktime_get()); |
| 723 | log->name = name; |
| 724 | log->line = line; |
| 725 | log->data_cnt = 0; |
| 726 | log->pid = current->pid; |
| 727 | |
| 728 | va_start(args, flag); |
| 729 | for (i = 0; i < SDE_ROT_EVTLOG_MAX_DATA; i++) { |
| 730 | |
| 731 | val = va_arg(args, int); |
| 732 | if (val == SDE_ROT_DATA_LIMITER) |
| 733 | break; |
| 734 | |
| 735 | log->data[i] = val; |
| 736 | } |
| 737 | va_end(args); |
| 738 | log->data_cnt = i; |
| 739 | sde_rot_dbg_evtlog.curr = |
| 740 | (sde_rot_dbg_evtlog.curr + 1) % SDE_ROT_EVTLOG_ENTRY; |
| 741 | sde_rot_dbg_evtlog.last++; |
| 742 | |
| 743 | spin_unlock_irqrestore(&sde_rot_xlock, flags); |
| 744 | } |
| 745 | |
Adrian Salido-Moreno | 5c15038 | 2016-04-06 09:29:37 -0700 | [diff] [blame] | 746 | /* |
| 747 | * sde_rotator_stat_show - Show statistics on read to this debugfs file |
| 748 | * @s: Pointer to sequence file structure |
| 749 | * @data: Pointer to private data structure |
| 750 | */ |
| 751 | static int sde_rotator_stat_show(struct seq_file *s, void *data) |
| 752 | { |
| 753 | int i, offset; |
| 754 | struct sde_rotator_device *rot_dev = s->private; |
| 755 | struct sde_rotator_statistics *stats = &rot_dev->stats; |
| 756 | u64 count = stats->count; |
| 757 | int num_events; |
| 758 | s64 proc_max, proc_min, proc_avg; |
Benjamin Chan | 4a4c0e2 | 2016-08-10 16:10:59 -0400 | [diff] [blame] | 759 | s64 swoh_max, swoh_min, swoh_avg; |
Adrian Salido-Moreno | 5c15038 | 2016-04-06 09:29:37 -0700 | [diff] [blame] | 760 | |
| 761 | proc_max = 0; |
| 762 | proc_min = S64_MAX; |
| 763 | proc_avg = 0; |
Benjamin Chan | 4a4c0e2 | 2016-08-10 16:10:59 -0400 | [diff] [blame] | 764 | swoh_max = 0; |
| 765 | swoh_min = S64_MAX; |
| 766 | swoh_avg = 0; |
Adrian Salido-Moreno | 5c15038 | 2016-04-06 09:29:37 -0700 | [diff] [blame] | 767 | |
| 768 | if (count > SDE_ROTATOR_NUM_EVENTS) { |
| 769 | num_events = SDE_ROTATOR_NUM_EVENTS; |
| 770 | offset = count % SDE_ROTATOR_NUM_EVENTS; |
| 771 | } else { |
| 772 | num_events = count; |
| 773 | offset = 0; |
| 774 | } |
| 775 | |
| 776 | for (i = 0; i < num_events; i++) { |
| 777 | int k = (offset + i) % SDE_ROTATOR_NUM_EVENTS; |
| 778 | ktime_t *ts = stats->ts[k]; |
| 779 | ktime_t start_time = |
| 780 | ktime_before(ts[SDE_ROTATOR_TS_SRCQB], |
| 781 | ts[SDE_ROTATOR_TS_DSTQB]) ? |
| 782 | ts[SDE_ROTATOR_TS_SRCQB] : |
| 783 | ts[SDE_ROTATOR_TS_DSTQB]; |
| 784 | s64 proc_time = |
| 785 | ktime_to_us(ktime_sub(ts[SDE_ROTATOR_TS_RETIRE], |
| 786 | start_time)); |
Benjamin Chan | 4a4c0e2 | 2016-08-10 16:10:59 -0400 | [diff] [blame] | 787 | s64 sw_overhead_time = |
| 788 | ktime_to_us(ktime_sub(ts[SDE_ROTATOR_TS_FLUSH], |
| 789 | start_time)); |
Adrian Salido-Moreno | 5c15038 | 2016-04-06 09:29:37 -0700 | [diff] [blame] | 790 | |
| 791 | seq_printf(s, |
Clarence Ip | b25c65c | 2017-05-17 12:09:23 -0400 | [diff] [blame] | 792 | "s:%d sq:%lld dq:%lld fe:%lld q:%lld c:%lld fl:%lld st:%lld d:%lld sdq:%lld ddq:%lld t:%lld oht:%lld\n", |
Adrian Salido-Moreno | 5c15038 | 2016-04-06 09:29:37 -0700 | [diff] [blame] | 793 | i, |
| 794 | ktime_to_us(ktime_sub(ts[SDE_ROTATOR_TS_FENCE], |
| 795 | ts[SDE_ROTATOR_TS_SRCQB])), |
| 796 | ktime_to_us(ktime_sub(ts[SDE_ROTATOR_TS_FENCE], |
| 797 | ts[SDE_ROTATOR_TS_DSTQB])), |
| 798 | ktime_to_us(ktime_sub(ts[SDE_ROTATOR_TS_QUEUE], |
| 799 | ts[SDE_ROTATOR_TS_FENCE])), |
| 800 | ktime_to_us(ktime_sub(ts[SDE_ROTATOR_TS_COMMIT], |
| 801 | ts[SDE_ROTATOR_TS_QUEUE])), |
| 802 | ktime_to_us(ktime_sub(ts[SDE_ROTATOR_TS_FLUSH], |
| 803 | ts[SDE_ROTATOR_TS_COMMIT])), |
Clarence Ip | b25c65c | 2017-05-17 12:09:23 -0400 | [diff] [blame] | 804 | ktime_to_us(ktime_sub(ts[SDE_ROTATOR_TS_START], |
Adrian Salido-Moreno | 5c15038 | 2016-04-06 09:29:37 -0700 | [diff] [blame] | 805 | ts[SDE_ROTATOR_TS_FLUSH])), |
Clarence Ip | b25c65c | 2017-05-17 12:09:23 -0400 | [diff] [blame] | 806 | ktime_to_us(ktime_sub(ts[SDE_ROTATOR_TS_DONE], |
| 807 | ts[SDE_ROTATOR_TS_START])), |
Adrian Salido-Moreno | 5c15038 | 2016-04-06 09:29:37 -0700 | [diff] [blame] | 808 | ktime_to_us(ktime_sub(ts[SDE_ROTATOR_TS_RETIRE], |
| 809 | ts[SDE_ROTATOR_TS_DONE])), |
| 810 | ktime_to_us(ktime_sub(ts[SDE_ROTATOR_TS_SRCDQB], |
| 811 | ts[SDE_ROTATOR_TS_RETIRE])), |
| 812 | ktime_to_us(ktime_sub(ts[SDE_ROTATOR_TS_DSTDQB], |
| 813 | ts[SDE_ROTATOR_TS_RETIRE])), |
Benjamin Chan | 4a4c0e2 | 2016-08-10 16:10:59 -0400 | [diff] [blame] | 814 | proc_time, sw_overhead_time); |
Adrian Salido-Moreno | 5c15038 | 2016-04-06 09:29:37 -0700 | [diff] [blame] | 815 | |
| 816 | proc_max = max(proc_max, proc_time); |
| 817 | proc_min = min(proc_min, proc_time); |
| 818 | proc_avg += proc_time; |
Benjamin Chan | 4a4c0e2 | 2016-08-10 16:10:59 -0400 | [diff] [blame] | 819 | |
| 820 | swoh_max = max(swoh_max, sw_overhead_time); |
| 821 | swoh_min = min(swoh_min, sw_overhead_time); |
| 822 | swoh_avg += sw_overhead_time; |
Adrian Salido-Moreno | 5c15038 | 2016-04-06 09:29:37 -0700 | [diff] [blame] | 823 | } |
| 824 | |
| 825 | proc_avg = (num_events) ? |
| 826 | DIV_ROUND_CLOSEST_ULL(proc_avg, num_events) : 0; |
Benjamin Chan | 4a4c0e2 | 2016-08-10 16:10:59 -0400 | [diff] [blame] | 827 | swoh_avg = (num_events) ? |
| 828 | DIV_ROUND_CLOSEST_ULL(swoh_avg, num_events) : 0; |
Adrian Salido-Moreno | 5c15038 | 2016-04-06 09:29:37 -0700 | [diff] [blame] | 829 | |
| 830 | seq_printf(s, "count:%llu\n", count); |
| 831 | seq_printf(s, "fai1:%llu\n", stats->fail_count); |
| 832 | seq_printf(s, "t_max:%lld\n", proc_max); |
| 833 | seq_printf(s, "t_min:%lld\n", proc_min); |
| 834 | seq_printf(s, "t_avg:%lld\n", proc_avg); |
Benjamin Chan | 4a4c0e2 | 2016-08-10 16:10:59 -0400 | [diff] [blame] | 835 | seq_printf(s, "swoh_max:%lld\n", swoh_max); |
| 836 | seq_printf(s, "swoh_min:%lld\n", swoh_min); |
| 837 | seq_printf(s, "swoh_avg:%lld\n", swoh_avg); |
Adrian Salido-Moreno | 5c15038 | 2016-04-06 09:29:37 -0700 | [diff] [blame] | 838 | |
| 839 | return 0; |
| 840 | } |
| 841 | |
| 842 | /* |
| 843 | * sde_rotator_stat_write - Clear statistics on write to this debugfs file. |
| 844 | * @t_file: |
| 845 | * @t_char: |
| 846 | * @t_size_t: |
| 847 | * @t_lof_t: |
| 848 | */ |
| 849 | static ssize_t sde_rotator_stat_write(struct file *t_file, |
| 850 | const char *t_char, size_t t_size_t, loff_t *t_loff_t) |
| 851 | { |
| 852 | struct seq_file *s = t_file->private_data; |
| 853 | struct sde_rotator_device *rot_dev = s->private; |
| 854 | struct sde_rotator_statistics *stats = &rot_dev->stats; |
| 855 | char buf[128]; |
| 856 | |
| 857 | mutex_lock(&rot_dev->lock); |
| 858 | sde_rot_mgr_lock(rot_dev->mgr); |
| 859 | memset(stats, 0, sizeof(struct sde_rotator_statistics)); |
| 860 | sde_rot_mgr_unlock(rot_dev->mgr); |
| 861 | mutex_unlock(&rot_dev->lock); |
| 862 | return simple_write_to_buffer(buf, sizeof(buf), |
| 863 | t_loff_t, t_char, t_size_t); |
| 864 | } |
| 865 | |
| 866 | /* |
| 867 | * sde_rotator_raw_show - Show raw statistics on read from this debugfs file |
| 868 | * @s: Pointer to sequence file structure |
| 869 | * @data: Pointer to private data structure |
| 870 | */ |
| 871 | static int sde_rotator_raw_show(struct seq_file *s, void *data) |
| 872 | { |
| 873 | int i, j, offset; |
| 874 | struct sde_rotator_device *rot_dev = s->private; |
| 875 | struct sde_rotator_statistics *stats = &rot_dev->stats; |
| 876 | u64 count = stats->count; |
| 877 | int num_events; |
| 878 | |
| 879 | if (count > SDE_ROTATOR_NUM_EVENTS) { |
| 880 | num_events = SDE_ROTATOR_NUM_EVENTS; |
| 881 | offset = count % SDE_ROTATOR_NUM_EVENTS; |
| 882 | } else { |
| 883 | num_events = count; |
| 884 | offset = 0; |
| 885 | } |
| 886 | |
| 887 | for (i = 0; i < num_events; i++) { |
| 888 | int k = (offset + i) % SDE_ROTATOR_NUM_EVENTS; |
| 889 | ktime_t *ts = stats->ts[k]; |
| 890 | |
| 891 | seq_printf(s, "%d ", i); |
| 892 | for (j = 0; j < SDE_ROTATOR_NUM_TIMESTAMPS; j++) |
| 893 | seq_printf(s, "%lld ", ktime_to_us(ts[j])); |
| 894 | seq_puts(s, "\n"); |
| 895 | } |
| 896 | |
| 897 | return 0; |
| 898 | } |
| 899 | |
| 900 | /* |
| 901 | * sde_rotator_dbg_open - Processed statistics debugfs file open function |
| 902 | * @inode: |
| 903 | * @file: |
| 904 | */ |
| 905 | static int sde_rotator_stat_open(struct inode *inode, struct file *file) |
| 906 | { |
| 907 | return single_open(file, sde_rotator_stat_show, inode->i_private); |
| 908 | } |
| 909 | |
| 910 | /* |
| 911 | * sde_rotator_dbg_open - Raw statistics debugfs file open function |
| 912 | * @inode: |
| 913 | * @file: |
| 914 | */ |
| 915 | static int sde_rotator_raw_open(struct inode *inode, struct file *file) |
| 916 | { |
| 917 | return single_open(file, sde_rotator_raw_show, inode->i_private); |
| 918 | } |
| 919 | |
| 920 | /* |
| 921 | * sde_rotator_dbg_open - Raw statistics debugfs file open function |
| 922 | * @mdata: Pointer to rotator global data |
| 923 | * @debugfs_root: Pointer to parent debugfs node |
| 924 | */ |
| 925 | static int sde_rotator_base_create_debugfs( |
| 926 | struct sde_rot_data_type *mdata, |
| 927 | struct dentry *debugfs_root) |
| 928 | { |
| 929 | if (!debugfs_create_u32("iommu_ref_cnt", 0444, |
| 930 | debugfs_root, &mdata->iommu_ref_cnt)) { |
| 931 | SDEROT_WARN("failed to create debugfs iommu ref cnt\n"); |
| 932 | return -EINVAL; |
| 933 | } |
| 934 | |
Benjamin Chan | 2d6411a | 2017-03-28 18:01:53 -0400 | [diff] [blame] | 935 | mdata->clk_always_on = false; |
| 936 | if (!debugfs_create_bool("clk_always_on", 0644, |
| 937 | debugfs_root, &mdata->clk_always_on)) { |
| 938 | SDEROT_WARN("failed to create debugfs clk_always_on\n"); |
| 939 | return -EINVAL; |
| 940 | } |
| 941 | |
Adrian Salido-Moreno | 5c15038 | 2016-04-06 09:29:37 -0700 | [diff] [blame] | 942 | return 0; |
| 943 | } |
| 944 | |
| 945 | /* |
| 946 | * sde_rotator_dbg_open - Raw statistics debugfs file open function |
| 947 | * @mgr: Pointer to rotator manager structure |
| 948 | * @debugfs_root: Pointer to parent debugfs node |
| 949 | */ |
| 950 | static int sde_rotator_core_create_debugfs( |
| 951 | struct sde_rot_mgr *mgr, |
| 952 | struct dentry *debugfs_root) |
| 953 | { |
| 954 | int ret; |
| 955 | |
| 956 | if (!debugfs_create_u32("hwacquire_timeout", 0644, |
| 957 | debugfs_root, &mgr->hwacquire_timeout)) { |
| 958 | SDEROT_WARN("failed to create debugfs hw acquire timeout\n"); |
| 959 | return -EINVAL; |
| 960 | } |
| 961 | |
| 962 | if (!debugfs_create_u32("ppc_numer", 0644, |
| 963 | debugfs_root, &mgr->pixel_per_clk.numer)) { |
| 964 | SDEROT_WARN("failed to create debugfs ppc numerator\n"); |
| 965 | return -EINVAL; |
| 966 | } |
| 967 | |
| 968 | if (!debugfs_create_u32("ppc_denom", 0644, |
| 969 | debugfs_root, &mgr->pixel_per_clk.denom)) { |
| 970 | SDEROT_WARN("failed to create debugfs ppc denominator\n"); |
| 971 | return -EINVAL; |
| 972 | } |
| 973 | |
Alan Kwong | 30ab1ce | 2017-03-03 12:09:32 -0800 | [diff] [blame] | 974 | if (!debugfs_create_u64("enable_bw_vote", 0644, |
| 975 | debugfs_root, &mgr->enable_bw_vote)) { |
| 976 | SDEROT_WARN("failed to create enable_bw_vote\n"); |
| 977 | return -EINVAL; |
| 978 | } |
| 979 | |
Adrian Salido-Moreno | 5c15038 | 2016-04-06 09:29:37 -0700 | [diff] [blame] | 980 | if (mgr->ops_hw_create_debugfs) { |
| 981 | ret = mgr->ops_hw_create_debugfs(mgr, debugfs_root); |
| 982 | if (ret) |
| 983 | return ret; |
| 984 | } |
| 985 | return 0; |
| 986 | } |
| 987 | |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 988 | static const struct file_operations sde_rot_evtlog_fops = { |
| 989 | .open = sde_rot_evtlog_dump_open, |
| 990 | .read = sde_rot_evtlog_dump_read, |
| 991 | .write = sde_rot_evtlog_dump_write, |
| 992 | }; |
| 993 | |
| 994 | static int sde_rotator_evtlog_create_debugfs( |
| 995 | struct sde_rot_mgr *mgr, |
| 996 | struct dentry *debugfs_root) |
| 997 | { |
| 998 | int i; |
| 999 | |
| 1000 | sde_rot_dbg_evtlog.evtlog = debugfs_create_dir("evtlog", debugfs_root); |
| 1001 | if (IS_ERR_OR_NULL(sde_rot_dbg_evtlog.evtlog)) { |
| 1002 | pr_err("debugfs_create_dir fail, error %ld\n", |
| 1003 | PTR_ERR(sde_rot_dbg_evtlog.evtlog)); |
| 1004 | sde_rot_dbg_evtlog.evtlog = NULL; |
| 1005 | return -ENODEV; |
| 1006 | } |
| 1007 | |
| 1008 | INIT_WORK(&sde_rot_dbg_evtlog.evtlog_dump_work, |
| 1009 | sde_rot_evtlog_debug_work); |
| 1010 | sde_rot_dbg_evtlog.work_panic = false; |
| 1011 | |
| 1012 | for (i = 0; i < SDE_ROT_EVTLOG_ENTRY; i++) |
| 1013 | sde_rot_dbg_evtlog.logs[i].counter = i; |
| 1014 | |
| 1015 | debugfs_create_file("dump", 0644, sde_rot_dbg_evtlog.evtlog, NULL, |
| 1016 | &sde_rot_evtlog_fops); |
| 1017 | debugfs_create_u32("enable", 0644, sde_rot_dbg_evtlog.evtlog, |
| 1018 | &sde_rot_dbg_evtlog.evtlog_enable); |
| 1019 | debugfs_create_u32("panic", 0644, sde_rot_dbg_evtlog.evtlog, |
| 1020 | &sde_rot_dbg_evtlog.panic_on_err); |
| 1021 | debugfs_create_u32("reg_dump", 0644, sde_rot_dbg_evtlog.evtlog, |
| 1022 | &sde_rot_dbg_evtlog.enable_reg_dump); |
| 1023 | debugfs_create_u32("vbif_dbgbus_dump", 0644, sde_rot_dbg_evtlog.evtlog, |
| 1024 | &sde_rot_dbg_evtlog.enable_vbif_dbgbus_dump); |
Benjamin Chan | 2d6411a | 2017-03-28 18:01:53 -0400 | [diff] [blame] | 1025 | debugfs_create_u32("rot_dbgbus_dump", 0644, sde_rot_dbg_evtlog.evtlog, |
| 1026 | &sde_rot_dbg_evtlog.enable_rot_dbgbus_dump); |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 1027 | |
| 1028 | sde_rot_dbg_evtlog.evtlog_enable = SDE_EVTLOG_DEFAULT_ENABLE; |
| 1029 | sde_rot_dbg_evtlog.panic_on_err = SDE_EVTLOG_DEFAULT_PANIC; |
| 1030 | sde_rot_dbg_evtlog.enable_reg_dump = SDE_EVTLOG_DEFAULT_REGDUMP; |
| 1031 | sde_rot_dbg_evtlog.enable_vbif_dbgbus_dump = |
| 1032 | SDE_EVTLOG_DEFAULT_VBIF_DBGBUSDUMP; |
Benjamin Chan | 2d6411a | 2017-03-28 18:01:53 -0400 | [diff] [blame] | 1033 | sde_rot_dbg_evtlog.enable_rot_dbgbus_dump = |
| 1034 | SDE_EVTLOG_DEFAULT_ROT_DBGBUSDUMP; |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 1035 | |
| 1036 | pr_info("evtlog_status: enable:%d, panic:%d, dump:%d\n", |
| 1037 | sde_rot_dbg_evtlog.evtlog_enable, |
| 1038 | sde_rot_dbg_evtlog.panic_on_err, |
| 1039 | sde_rot_dbg_evtlog.enable_reg_dump); |
| 1040 | |
| 1041 | return 0; |
| 1042 | } |
| 1043 | |
Benjamin Chan | dbe1311 | 2016-09-26 12:10:06 -0400 | [diff] [blame] | 1044 | |
| 1045 | static int sde_rotator_perf_create_debugfs( |
| 1046 | struct sde_rotator_device *rot_dev, |
| 1047 | struct dentry *debugfs_root) |
| 1048 | { |
| 1049 | rot_dev->perf_root = debugfs_create_dir("perf", debugfs_root); |
| 1050 | if (IS_ERR_OR_NULL(rot_dev->perf_root)) { |
| 1051 | pr_err("debugfs_create_dir for perf failed, error %ld\n", |
| 1052 | PTR_ERR(rot_dev->perf_root)); |
| 1053 | rot_dev->perf_root = NULL; |
| 1054 | return -ENODEV; |
| 1055 | } |
| 1056 | |
| 1057 | rot_dev->min_rot_clk = 0; |
| 1058 | debugfs_create_u32("min_rot_clk", 0644, |
| 1059 | rot_dev->perf_root, &rot_dev->min_rot_clk); |
| 1060 | |
| 1061 | rot_dev->min_bw = 0; |
| 1062 | debugfs_create_u32("min_bw", 0644, |
| 1063 | rot_dev->perf_root, &rot_dev->min_bw); |
| 1064 | |
| 1065 | rot_dev->min_overhead_us = 0; |
| 1066 | debugfs_create_u32("min_overhead_us", 0644, |
| 1067 | rot_dev->perf_root, &rot_dev->min_overhead_us); |
| 1068 | |
| 1069 | return 0; |
| 1070 | } |
| 1071 | |
Adrian Salido-Moreno | 5c15038 | 2016-04-06 09:29:37 -0700 | [diff] [blame] | 1072 | /* |
| 1073 | * struct sde_rotator_stat_ops - processed statistics file operations |
| 1074 | */ |
| 1075 | static const struct file_operations sde_rotator_stat_ops = { |
| 1076 | .open = sde_rotator_stat_open, |
| 1077 | .read = seq_read, |
| 1078 | .write = sde_rotator_stat_write, |
| 1079 | .llseek = seq_lseek, |
| 1080 | .release = single_release |
| 1081 | }; |
| 1082 | |
| 1083 | /* |
| 1084 | * struct sde_rotator_raw_ops - raw statistics file operations |
| 1085 | */ |
| 1086 | static const struct file_operations sde_rotator_raw_ops = { |
| 1087 | .open = sde_rotator_raw_open, |
| 1088 | .read = seq_read, |
| 1089 | .llseek = seq_lseek, |
| 1090 | .release = single_release |
| 1091 | }; |
| 1092 | |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 1093 | static int sde_rotator_debug_base_open(struct inode *inode, struct file *file) |
| 1094 | { |
| 1095 | /* non-seekable */ |
| 1096 | file->f_mode &= ~(FMODE_LSEEK | FMODE_PREAD | FMODE_PWRITE); |
| 1097 | file->private_data = inode->i_private; |
| 1098 | return 0; |
| 1099 | } |
| 1100 | |
| 1101 | static int sde_rotator_debug_base_release(struct inode *inode, |
| 1102 | struct file *file) |
| 1103 | { |
| 1104 | struct sde_rotator_debug_base *dbg = file->private_data; |
| 1105 | |
Benjamin Chan | 6db7eb5 | 2017-02-17 14:49:45 -0500 | [diff] [blame] | 1106 | if (dbg) { |
| 1107 | mutex_lock(&dbg->buflock); |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 1108 | kfree(dbg->buf); |
| 1109 | dbg->buf_len = 0; |
| 1110 | dbg->buf = NULL; |
Benjamin Chan | 6db7eb5 | 2017-02-17 14:49:45 -0500 | [diff] [blame] | 1111 | mutex_unlock(&dbg->buflock); |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 1112 | } |
Benjamin Chan | 6db7eb5 | 2017-02-17 14:49:45 -0500 | [diff] [blame] | 1113 | |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 1114 | return 0; |
| 1115 | } |
| 1116 | |
| 1117 | static ssize_t sde_rotator_debug_base_offset_write(struct file *file, |
| 1118 | const char __user *user_buf, size_t count, loff_t *ppos) |
| 1119 | { |
| 1120 | struct sde_rotator_debug_base *dbg = file->private_data; |
| 1121 | u32 off = 0; |
| 1122 | u32 cnt = SDE_ROT_DEFAULT_BASE_REG_CNT; |
| 1123 | char buf[24]; |
| 1124 | |
| 1125 | if (!dbg) |
| 1126 | return -ENODEV; |
| 1127 | |
| 1128 | if (count >= sizeof(buf)) |
| 1129 | return -EFAULT; |
| 1130 | |
| 1131 | if (copy_from_user(buf, user_buf, count)) |
| 1132 | return -EFAULT; |
| 1133 | |
| 1134 | buf[count] = 0; |
| 1135 | |
| 1136 | if (sscanf(buf, "%5x %x", &off, &cnt) < 2) |
| 1137 | return -EINVAL; |
| 1138 | |
| 1139 | if (off > dbg->max_offset) |
| 1140 | return -EINVAL; |
| 1141 | |
| 1142 | if (cnt > (dbg->max_offset - off)) |
| 1143 | cnt = dbg->max_offset - off; |
| 1144 | |
Benjamin Chan | 6db7eb5 | 2017-02-17 14:49:45 -0500 | [diff] [blame] | 1145 | mutex_lock(&dbg->buflock); |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 1146 | dbg->off = off; |
| 1147 | dbg->cnt = cnt; |
Benjamin Chan | 6db7eb5 | 2017-02-17 14:49:45 -0500 | [diff] [blame] | 1148 | mutex_unlock(&dbg->buflock); |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 1149 | |
| 1150 | SDEROT_DBG("offset=%x cnt=%x\n", off, cnt); |
| 1151 | |
| 1152 | return count; |
| 1153 | } |
| 1154 | |
| 1155 | static ssize_t sde_rotator_debug_base_offset_read(struct file *file, |
| 1156 | char __user *buff, size_t count, loff_t *ppos) |
| 1157 | { |
| 1158 | struct sde_rotator_debug_base *dbg = file->private_data; |
| 1159 | int len = 0; |
| 1160 | char buf[24] = {'\0'}; |
| 1161 | |
| 1162 | if (!dbg) |
| 1163 | return -ENODEV; |
| 1164 | |
| 1165 | if (*ppos) |
| 1166 | return 0; /* the end */ |
| 1167 | |
Benjamin Chan | 6db7eb5 | 2017-02-17 14:49:45 -0500 | [diff] [blame] | 1168 | mutex_lock(&dbg->buflock); |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 1169 | len = snprintf(buf, sizeof(buf), "0x%08zx %zx\n", dbg->off, dbg->cnt); |
Benjamin Chan | 6db7eb5 | 2017-02-17 14:49:45 -0500 | [diff] [blame] | 1170 | mutex_unlock(&dbg->buflock); |
| 1171 | |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 1172 | if (len < 0 || len >= sizeof(buf)) |
| 1173 | return 0; |
| 1174 | |
| 1175 | if ((count < sizeof(buf)) || copy_to_user(buff, buf, len)) |
| 1176 | return -EFAULT; |
| 1177 | |
| 1178 | *ppos += len; /* increase offset */ |
| 1179 | |
| 1180 | return len; |
| 1181 | } |
| 1182 | |
| 1183 | static ssize_t sde_rotator_debug_base_reg_write(struct file *file, |
| 1184 | const char __user *user_buf, size_t count, loff_t *ppos) |
| 1185 | { |
| 1186 | struct sde_rotator_debug_base *dbg = file->private_data; |
| 1187 | size_t off; |
| 1188 | u32 data, cnt; |
| 1189 | char buf[24]; |
| 1190 | |
| 1191 | if (!dbg) |
| 1192 | return -ENODEV; |
| 1193 | |
| 1194 | if (count >= sizeof(buf)) |
| 1195 | return -EFAULT; |
| 1196 | |
| 1197 | if (copy_from_user(buf, user_buf, count)) |
| 1198 | return -EFAULT; |
| 1199 | |
| 1200 | buf[count] = 0; |
| 1201 | |
| 1202 | cnt = sscanf(buf, "%zx %x", &off, &data); |
| 1203 | |
| 1204 | if (cnt < 2) |
| 1205 | return -EFAULT; |
| 1206 | |
| 1207 | if (off >= dbg->max_offset) |
| 1208 | return -EFAULT; |
| 1209 | |
Benjamin Chan | 6db7eb5 | 2017-02-17 14:49:45 -0500 | [diff] [blame] | 1210 | mutex_lock(&dbg->buflock); |
| 1211 | |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 1212 | /* Enable Clock for register access */ |
| 1213 | sde_rotator_clk_ctrl(dbg->mgr, true); |
| 1214 | |
| 1215 | writel_relaxed(data, dbg->base + off); |
| 1216 | |
| 1217 | /* Disable Clock after register access */ |
| 1218 | sde_rotator_clk_ctrl(dbg->mgr, false); |
| 1219 | |
Benjamin Chan | 6db7eb5 | 2017-02-17 14:49:45 -0500 | [diff] [blame] | 1220 | mutex_unlock(&dbg->buflock); |
| 1221 | |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 1222 | SDEROT_DBG("addr=%zx data=%x\n", off, data); |
| 1223 | |
| 1224 | return count; |
| 1225 | } |
| 1226 | |
| 1227 | static ssize_t sde_rotator_debug_base_reg_read(struct file *file, |
| 1228 | char __user *user_buf, size_t count, loff_t *ppos) |
| 1229 | { |
| 1230 | struct sde_rotator_debug_base *dbg = file->private_data; |
| 1231 | size_t len; |
Benjamin Chan | 6db7eb5 | 2017-02-17 14:49:45 -0500 | [diff] [blame] | 1232 | int rc = 0; |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 1233 | |
| 1234 | if (!dbg) { |
| 1235 | SDEROT_ERR("invalid handle\n"); |
| 1236 | return -ENODEV; |
| 1237 | } |
| 1238 | |
Benjamin Chan | 6db7eb5 | 2017-02-17 14:49:45 -0500 | [diff] [blame] | 1239 | mutex_lock(&dbg->buflock); |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 1240 | if (!dbg->buf) { |
| 1241 | char dump_buf[64]; |
| 1242 | char *ptr; |
| 1243 | int cnt, tot; |
| 1244 | |
| 1245 | dbg->buf_len = sizeof(dump_buf) * |
| 1246 | DIV_ROUND_UP(dbg->cnt, ROW_BYTES); |
| 1247 | dbg->buf = kzalloc(dbg->buf_len, GFP_KERNEL); |
| 1248 | |
| 1249 | if (!dbg->buf) { |
| 1250 | SDEROT_ERR("not enough memory to hold reg dump\n"); |
Benjamin Chan | 6db7eb5 | 2017-02-17 14:49:45 -0500 | [diff] [blame] | 1251 | rc = -ENOMEM; |
| 1252 | goto debug_read_error; |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 1253 | } |
| 1254 | |
| 1255 | ptr = dbg->base + dbg->off; |
| 1256 | tot = 0; |
| 1257 | |
| 1258 | /* Enable clock for register access */ |
| 1259 | sde_rotator_clk_ctrl(dbg->mgr, true); |
| 1260 | |
| 1261 | for (cnt = dbg->cnt; cnt > 0; cnt -= ROW_BYTES) { |
| 1262 | hex_dump_to_buffer(ptr, min(cnt, ROW_BYTES), |
| 1263 | ROW_BYTES, GROUP_BYTES, dump_buf, |
| 1264 | sizeof(dump_buf), false); |
| 1265 | len = scnprintf(dbg->buf + tot, dbg->buf_len - tot, |
| 1266 | "0x%08x: %s\n", |
| 1267 | ((int) (unsigned long) ptr) - |
| 1268 | ((int) (unsigned long) dbg->base), |
| 1269 | dump_buf); |
| 1270 | |
| 1271 | ptr += ROW_BYTES; |
| 1272 | tot += len; |
| 1273 | if (tot >= dbg->buf_len) |
| 1274 | break; |
| 1275 | } |
| 1276 | /* Disable clock after register access */ |
| 1277 | sde_rotator_clk_ctrl(dbg->mgr, false); |
| 1278 | |
| 1279 | dbg->buf_len = tot; |
| 1280 | } |
| 1281 | |
Benjamin Chan | 6db7eb5 | 2017-02-17 14:49:45 -0500 | [diff] [blame] | 1282 | if (*ppos >= dbg->buf_len) { |
| 1283 | rc = 0; /* done reading */ |
| 1284 | goto debug_read_error; |
| 1285 | } |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 1286 | |
| 1287 | len = min(count, dbg->buf_len - (size_t) *ppos); |
| 1288 | if (copy_to_user(user_buf, dbg->buf + *ppos, len)) { |
| 1289 | SDEROT_ERR("failed to copy to user\n"); |
Benjamin Chan | 6db7eb5 | 2017-02-17 14:49:45 -0500 | [diff] [blame] | 1290 | rc = -EFAULT; |
| 1291 | goto debug_read_error; |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 1292 | } |
| 1293 | |
| 1294 | *ppos += len; /* increase offset */ |
| 1295 | |
Benjamin Chan | 6db7eb5 | 2017-02-17 14:49:45 -0500 | [diff] [blame] | 1296 | mutex_unlock(&dbg->buflock); |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 1297 | return len; |
Benjamin Chan | 6db7eb5 | 2017-02-17 14:49:45 -0500 | [diff] [blame] | 1298 | |
| 1299 | debug_read_error: |
| 1300 | mutex_unlock(&dbg->buflock); |
| 1301 | return rc; |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 1302 | } |
| 1303 | |
| 1304 | static const struct file_operations sde_rotator_off_fops = { |
| 1305 | .open = sde_rotator_debug_base_open, |
| 1306 | .release = sde_rotator_debug_base_release, |
| 1307 | .read = sde_rotator_debug_base_offset_read, |
| 1308 | .write = sde_rotator_debug_base_offset_write, |
| 1309 | }; |
| 1310 | |
| 1311 | static const struct file_operations sde_rotator_reg_fops = { |
| 1312 | .open = sde_rotator_debug_base_open, |
| 1313 | .release = sde_rotator_debug_base_release, |
| 1314 | .read = sde_rotator_debug_base_reg_read, |
| 1315 | .write = sde_rotator_debug_base_reg_write, |
| 1316 | }; |
| 1317 | |
| 1318 | int sde_rotator_debug_register_base(struct sde_rotator_device *rot_dev, |
| 1319 | struct dentry *debugfs_root, |
| 1320 | const char *name, |
| 1321 | struct sde_io_data *io_data) |
| 1322 | { |
| 1323 | struct sde_rotator_debug_base *dbg; |
| 1324 | struct dentry *ent_off, *ent_reg; |
| 1325 | char dbgname[80] = ""; |
| 1326 | int prefix_len = 0; |
| 1327 | |
| 1328 | if (!io_data) |
| 1329 | return -EINVAL; |
| 1330 | |
| 1331 | dbg = kzalloc(sizeof(*dbg), GFP_KERNEL); |
| 1332 | if (!dbg) |
| 1333 | return -ENOMEM; |
| 1334 | |
Benjamin Chan | 6db7eb5 | 2017-02-17 14:49:45 -0500 | [diff] [blame] | 1335 | mutex_init(&dbg->buflock); |
| 1336 | mutex_lock(&dbg->buflock); |
| 1337 | |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 1338 | if (name) |
| 1339 | strlcpy(dbg->name, name, sizeof(dbg->name)); |
| 1340 | dbg->base = io_data->base; |
| 1341 | dbg->max_offset = io_data->len; |
| 1342 | dbg->off = 0; |
| 1343 | dbg->cnt = SDE_ROT_DEFAULT_BASE_REG_CNT; |
| 1344 | |
| 1345 | if (name) { |
| 1346 | if (strcmp(name, "sde")) |
| 1347 | prefix_len = snprintf(dbgname, sizeof(dbgname), "%s_", |
| 1348 | name); |
| 1349 | else |
| 1350 | /* |
| 1351 | * For SDE Rotator registers block, the IO base address |
| 1352 | * is based on MDP IO address base. It is necessary to |
| 1353 | * apply the initial offset to it from the first |
| 1354 | * regdump setting. |
| 1355 | */ |
| 1356 | dbg->base += rot_dev->mdata->regdump ? |
| 1357 | rot_dev->mdata->regdump[0].offset : 0; |
| 1358 | } |
Benjamin Chan | 6db7eb5 | 2017-02-17 14:49:45 -0500 | [diff] [blame] | 1359 | mutex_unlock(&dbg->buflock); |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 1360 | |
| 1361 | strlcpy(dbgname + prefix_len, "off", sizeof(dbgname) - prefix_len); |
| 1362 | ent_off = debugfs_create_file(dbgname, 0644, debugfs_root, dbg, |
| 1363 | &sde_rotator_off_fops); |
| 1364 | if (IS_ERR_OR_NULL(ent_off)) { |
| 1365 | SDEROT_ERR("debugfs_create_file: offset fail\n"); |
| 1366 | goto off_fail; |
| 1367 | } |
| 1368 | |
| 1369 | strlcpy(dbgname + prefix_len, "reg", sizeof(dbgname) - prefix_len); |
| 1370 | ent_reg = debugfs_create_file(dbgname, 0644, debugfs_root, dbg, |
| 1371 | &sde_rotator_reg_fops); |
| 1372 | if (IS_ERR_OR_NULL(ent_reg)) { |
| 1373 | SDEROT_ERR("debugfs_create_file: reg fail\n"); |
| 1374 | goto reg_fail; |
| 1375 | } |
| 1376 | |
Benjamin Chan | 6db7eb5 | 2017-02-17 14:49:45 -0500 | [diff] [blame] | 1377 | mutex_lock(&dbg->buflock); |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 1378 | dbg->mgr = rot_dev->mgr; |
Benjamin Chan | 6db7eb5 | 2017-02-17 14:49:45 -0500 | [diff] [blame] | 1379 | mutex_unlock(&dbg->buflock); |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 1380 | |
| 1381 | return 0; |
| 1382 | reg_fail: |
| 1383 | debugfs_remove(ent_off); |
| 1384 | off_fail: |
| 1385 | kfree(dbg); |
| 1386 | return -ENODEV; |
| 1387 | } |
| 1388 | |
Adrian Salido-Moreno | 5c15038 | 2016-04-06 09:29:37 -0700 | [diff] [blame] | 1389 | /* |
| 1390 | * sde_rotator_create_debugfs - Setup rotator debugfs directory structure. |
| 1391 | * @rot_dev: Pointer to rotator device |
| 1392 | */ |
| 1393 | struct dentry *sde_rotator_create_debugfs( |
| 1394 | struct sde_rotator_device *rot_dev) |
| 1395 | { |
| 1396 | struct dentry *debugfs_root; |
| 1397 | char dirname[32] = {0}; |
| 1398 | |
| 1399 | snprintf(dirname, sizeof(dirname), "%s%d", |
| 1400 | SDE_ROTATOR_DRV_NAME, rot_dev->dev->id); |
| 1401 | debugfs_root = debugfs_create_dir(dirname, NULL); |
| 1402 | if (!debugfs_root) { |
| 1403 | SDEROT_ERR("fail create debugfs root\n"); |
| 1404 | return NULL; |
| 1405 | } |
| 1406 | |
| 1407 | if (!debugfs_create_file("stats", 0644, |
| 1408 | debugfs_root, rot_dev, &sde_rotator_stat_ops)) { |
| 1409 | SDEROT_ERR("fail create debugfs stats\n"); |
| 1410 | debugfs_remove_recursive(debugfs_root); |
| 1411 | return NULL; |
| 1412 | } |
| 1413 | |
| 1414 | if (!debugfs_create_file("raw", 0644, |
| 1415 | debugfs_root, rot_dev, &sde_rotator_raw_ops)) { |
| 1416 | SDEROT_ERR("fail create debugfs raw\n"); |
| 1417 | debugfs_remove_recursive(debugfs_root); |
| 1418 | return NULL; |
| 1419 | } |
| 1420 | |
| 1421 | if (!debugfs_create_u32("fence_timeout", 0644, |
| 1422 | debugfs_root, &rot_dev->fence_timeout)) { |
| 1423 | SDEROT_ERR("fail create fence_timeout\n"); |
| 1424 | debugfs_remove_recursive(debugfs_root); |
| 1425 | return NULL; |
| 1426 | } |
| 1427 | |
Alan Kwong | 6bc6462 | 2017-02-04 17:36:03 -0800 | [diff] [blame] | 1428 | if (!debugfs_create_u32("disable_syscache", 0644, |
| 1429 | debugfs_root, &rot_dev->disable_syscache)) { |
| 1430 | SDEROT_ERR("fail create disable_syscache\n"); |
| 1431 | debugfs_remove_recursive(debugfs_root); |
| 1432 | return NULL; |
| 1433 | } |
| 1434 | |
Adrian Salido-Moreno | 5c15038 | 2016-04-06 09:29:37 -0700 | [diff] [blame] | 1435 | if (!debugfs_create_u32("streamoff_timeout", 0644, |
| 1436 | debugfs_root, &rot_dev->streamoff_timeout)) { |
| 1437 | SDEROT_ERR("fail create streamoff_timeout\n"); |
| 1438 | debugfs_remove_recursive(debugfs_root); |
| 1439 | return NULL; |
| 1440 | } |
| 1441 | |
| 1442 | if (!debugfs_create_u32("early_submit", 0644, |
| 1443 | debugfs_root, &rot_dev->early_submit)) { |
| 1444 | SDEROT_ERR("fail create early_submit\n"); |
| 1445 | debugfs_remove_recursive(debugfs_root); |
| 1446 | return NULL; |
| 1447 | } |
| 1448 | |
| 1449 | if (sde_rotator_base_create_debugfs(rot_dev->mdata, debugfs_root)) { |
| 1450 | SDEROT_ERR("fail create base debugfs\n"); |
| 1451 | debugfs_remove_recursive(debugfs_root); |
| 1452 | return NULL; |
| 1453 | } |
| 1454 | |
| 1455 | if (sde_rotator_core_create_debugfs(rot_dev->mgr, debugfs_root)) { |
| 1456 | SDEROT_ERR("fail create core debugfs\n"); |
| 1457 | debugfs_remove_recursive(debugfs_root); |
| 1458 | return NULL; |
| 1459 | } |
| 1460 | |
Benjamin Chan | 53e3bce | 2016-08-31 14:43:29 -0400 | [diff] [blame] | 1461 | if (sde_rotator_evtlog_create_debugfs(rot_dev->mgr, debugfs_root)) { |
| 1462 | SDEROT_ERR("fail create evtlog debugfs\n"); |
| 1463 | debugfs_remove_recursive(debugfs_root); |
| 1464 | return NULL; |
| 1465 | } |
| 1466 | |
Benjamin Chan | dbe1311 | 2016-09-26 12:10:06 -0400 | [diff] [blame] | 1467 | if (sde_rotator_perf_create_debugfs(rot_dev, debugfs_root)) { |
| 1468 | SDEROT_ERR("fail create perf debugfs\n"); |
| 1469 | debugfs_remove_recursive(debugfs_root); |
| 1470 | return NULL; |
| 1471 | } |
| 1472 | |
Benjamin Chan | 6a0d241 | 2016-10-27 17:47:46 -0400 | [diff] [blame] | 1473 | if (sde_rotator_debug_register_base(rot_dev, debugfs_root, |
| 1474 | "sde", &rot_dev->mdata->sde_io)) { |
| 1475 | SDEROT_ERR("fail create debug register for sde rotator\n"); |
| 1476 | debugfs_remove_recursive(debugfs_root); |
| 1477 | return NULL; |
| 1478 | } |
| 1479 | |
| 1480 | if (sde_rotator_debug_register_base(rot_dev, debugfs_root, |
| 1481 | "vbif_nrt", &rot_dev->mdata->vbif_nrt_io)) { |
| 1482 | SDEROT_ERR("fail create debug register for sderot vbif_nrt\n"); |
| 1483 | debugfs_remove_recursive(debugfs_root); |
| 1484 | return NULL; |
| 1485 | } |
| 1486 | |
Adrian Salido-Moreno | 5c15038 | 2016-04-06 09:29:37 -0700 | [diff] [blame] | 1487 | return debugfs_root; |
| 1488 | } |
| 1489 | |
| 1490 | /* |
| 1491 | * sde_rotator_destroy_debugfs - Destroy rotator debugfs directory structure. |
| 1492 | * @rot_dev: Pointer to rotator debugfs |
| 1493 | */ |
| 1494 | void sde_rotator_destroy_debugfs(struct dentry *debugfs) |
| 1495 | { |
| 1496 | debugfs_remove_recursive(debugfs); |
| 1497 | } |