1 /* Copyright 2008 - 2016 Freescale Semiconductor, Inc. 2 * 3 * Redistribution and use in source and binary forms, with or without 4 * modification, are permitted provided that the following conditions are met: 5 * * Redistributions of source code must retain the above copyright 6 * notice, this list of conditions and the following disclaimer. 7 * * Redistributions in binary form must reproduce the above copyright 8 * notice, this list of conditions and the following disclaimer in the 9 * documentation and/or other materials provided with the distribution. 10 * * Neither the name of Freescale Semiconductor nor the 11 * names of its contributors may be used to endorse or promote products 12 * derived from this software without specific prior written permission. 13 * 14 * ALTERNATIVELY, this software may be distributed under the terms of the 15 * GNU General Public License ("GPL") as published by the Free Software 16 * Foundation, either version 2 of that License or (at your option) any 17 * later version. 18 * 19 * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY 20 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 22 * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY 23 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 26 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 28 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include "qman_priv.h" 32 33 u16 qman_ip_rev; 34 EXPORT_SYMBOL(qman_ip_rev); 35 u16 qm_channel_pool1 = QMAN_CHANNEL_POOL1; 36 EXPORT_SYMBOL(qm_channel_pool1); 37 u16 qm_channel_caam = QMAN_CHANNEL_CAAM; 38 EXPORT_SYMBOL(qm_channel_caam); 39 40 /* Register offsets */ 41 #define REG_QCSP_LIO_CFG(n) (0x0000 + ((n) * 0x10)) 42 #define REG_QCSP_IO_CFG(n) (0x0004 + ((n) * 0x10)) 43 #define REG_QCSP_DD_CFG(n) (0x000c + ((n) * 0x10)) 44 #define REG_DD_CFG 0x0200 45 #define REG_DCP_CFG(n) (0x0300 + ((n) * 0x10)) 46 #define REG_DCP_DD_CFG(n) (0x0304 + ((n) * 0x10)) 47 #define REG_DCP_DLM_AVG(n) (0x030c + ((n) * 0x10)) 48 #define REG_PFDR_FPC 0x0400 49 #define REG_PFDR_FP_HEAD 0x0404 50 #define REG_PFDR_FP_TAIL 0x0408 51 #define REG_PFDR_FP_LWIT 0x0410 52 #define REG_PFDR_CFG 0x0414 53 #define REG_SFDR_CFG 0x0500 54 #define REG_SFDR_IN_USE 0x0504 55 #define REG_WQ_CS_CFG(n) (0x0600 + ((n) * 0x04)) 56 #define REG_WQ_DEF_ENC_WQID 0x0630 57 #define REG_WQ_SC_DD_CFG(n) (0x640 + ((n) * 0x04)) 58 #define REG_WQ_PC_DD_CFG(n) (0x680 + ((n) * 0x04)) 59 #define REG_WQ_DC0_DD_CFG(n) (0x6c0 + ((n) * 0x04)) 60 #define REG_WQ_DC1_DD_CFG(n) (0x700 + ((n) * 0x04)) 61 #define REG_WQ_DCn_DD_CFG(n) (0x6c0 + ((n) * 0x40)) /* n=2,3 */ 62 #define REG_CM_CFG 0x0800 63 #define REG_ECSR 0x0a00 64 #define REG_ECIR 0x0a04 65 #define REG_EADR 0x0a08 66 #define REG_ECIR2 0x0a0c 67 #define REG_EDATA(n) (0x0a10 + ((n) * 0x04)) 68 #define REG_SBEC(n) (0x0a80 + ((n) * 0x04)) 69 #define REG_MCR 0x0b00 70 #define REG_MCP(n) (0x0b04 + ((n) * 0x04)) 71 #define REG_MISC_CFG 0x0be0 72 #define REG_HID_CFG 0x0bf0 73 #define REG_IDLE_STAT 0x0bf4 74 #define REG_IP_REV_1 0x0bf8 75 #define REG_IP_REV_2 0x0bfc 76 #define REG_FQD_BARE 0x0c00 77 #define REG_PFDR_BARE 0x0c20 78 #define REG_offset_BAR 0x0004 /* relative to REG_[FQD|PFDR]_BARE */ 79 #define REG_offset_AR 0x0010 /* relative to REG_[FQD|PFDR]_BARE */ 80 #define REG_QCSP_BARE 0x0c80 81 #define REG_QCSP_BAR 0x0c84 82 #define REG_CI_SCHED_CFG 0x0d00 83 #define REG_SRCIDR 0x0d04 84 #define REG_LIODNR 0x0d08 85 #define REG_CI_RLM_AVG 0x0d14 86 #define REG_ERR_ISR 0x0e00 87 #define REG_ERR_IER 0x0e04 88 #define REG_REV3_QCSP_LIO_CFG(n) (0x1000 + ((n) * 0x10)) 89 #define REG_REV3_QCSP_IO_CFG(n) (0x1004 + ((n) * 0x10)) 90 #define REG_REV3_QCSP_DD_CFG(n) (0x100c + ((n) * 0x10)) 91 92 /* Assists for QMAN_MCR */ 93 #define MCR_INIT_PFDR 0x01000000 94 #define MCR_get_rslt(v) (u8)((v) >> 24) 95 #define MCR_rslt_idle(r) (!(r) || ((r) >= 0xf0)) 96 #define MCR_rslt_ok(r) ((r) == 0xf0) 97 #define MCR_rslt_eaccess(r) ((r) == 0xf8) 98 #define MCR_rslt_inval(r) ((r) == 0xff) 99 100 /* 101 * Corenet initiator settings. Stash request queues are 4-deep to match cores 102 * ability to snarf. Stash priority is 3, other priorities are 2. 103 */ 104 #define QM_CI_SCHED_CFG_SRCCIV 4 105 #define QM_CI_SCHED_CFG_SRQ_W 3 106 #define QM_CI_SCHED_CFG_RW_W 2 107 #define QM_CI_SCHED_CFG_BMAN_W 2 108 /* write SRCCIV enable */ 109 #define QM_CI_SCHED_CFG_SRCCIV_EN BIT(31) 110 111 /* Follows WQ_CS_CFG0-5 */ 112 enum qm_wq_class { 113 qm_wq_portal = 0, 114 qm_wq_pool = 1, 115 qm_wq_fman0 = 2, 116 qm_wq_fman1 = 3, 117 qm_wq_caam = 4, 118 qm_wq_pme = 5, 119 qm_wq_first = qm_wq_portal, 120 qm_wq_last = qm_wq_pme 121 }; 122 123 /* Follows FQD_[BARE|BAR|AR] and PFDR_[BARE|BAR|AR] */ 124 enum qm_memory { 125 qm_memory_fqd, 126 qm_memory_pfdr 127 }; 128 129 /* Used by all error interrupt registers except 'inhibit' */ 130 #define QM_EIRQ_CIDE 0x20000000 /* Corenet Initiator Data Error */ 131 #define QM_EIRQ_CTDE 0x10000000 /* Corenet Target Data Error */ 132 #define QM_EIRQ_CITT 0x08000000 /* Corenet Invalid Target Transaction */ 133 #define QM_EIRQ_PLWI 0x04000000 /* PFDR Low Watermark */ 134 #define QM_EIRQ_MBEI 0x02000000 /* Multi-bit ECC Error */ 135 #define QM_EIRQ_SBEI 0x01000000 /* Single-bit ECC Error */ 136 #define QM_EIRQ_PEBI 0x00800000 /* PFDR Enqueues Blocked Interrupt */ 137 #define QM_EIRQ_IFSI 0x00020000 /* Invalid FQ Flow Control State */ 138 #define QM_EIRQ_ICVI 0x00010000 /* Invalid Command Verb */ 139 #define QM_EIRQ_IDDI 0x00000800 /* Invalid Dequeue (Direct-connect) */ 140 #define QM_EIRQ_IDFI 0x00000400 /* Invalid Dequeue FQ */ 141 #define QM_EIRQ_IDSI 0x00000200 /* Invalid Dequeue Source */ 142 #define QM_EIRQ_IDQI 0x00000100 /* Invalid Dequeue Queue */ 143 #define QM_EIRQ_IECE 0x00000010 /* Invalid Enqueue Configuration */ 144 #define QM_EIRQ_IEOI 0x00000008 /* Invalid Enqueue Overflow */ 145 #define QM_EIRQ_IESI 0x00000004 /* Invalid Enqueue State */ 146 #define QM_EIRQ_IECI 0x00000002 /* Invalid Enqueue Channel */ 147 #define QM_EIRQ_IEQI 0x00000001 /* Invalid Enqueue Queue */ 148 149 /* QMAN_ECIR valid error bit */ 150 #define PORTAL_ECSR_ERR (QM_EIRQ_IEQI | QM_EIRQ_IESI | QM_EIRQ_IEOI | \ 151 QM_EIRQ_IDQI | QM_EIRQ_IDSI | QM_EIRQ_IDFI | \ 152 QM_EIRQ_IDDI | QM_EIRQ_ICVI | QM_EIRQ_IFSI) 153 #define FQID_ECSR_ERR (QM_EIRQ_IEQI | QM_EIRQ_IECI | QM_EIRQ_IESI | \ 154 QM_EIRQ_IEOI | QM_EIRQ_IDQI | QM_EIRQ_IDFI | \ 155 QM_EIRQ_IFSI) 156 157 struct qm_ecir { 158 u32 info; /* res[30-31], ptyp[29], pnum[24-28], fqid[0-23] */ 159 }; 160 161 static bool qm_ecir_is_dcp(const struct qm_ecir *p) 162 { 163 return p->info & BIT(29); 164 } 165 166 static int qm_ecir_get_pnum(const struct qm_ecir *p) 167 { 168 return (p->info >> 24) & 0x1f; 169 } 170 171 static int qm_ecir_get_fqid(const struct qm_ecir *p) 172 { 173 return p->info & (BIT(24) - 1); 174 } 175 176 struct qm_ecir2 { 177 u32 info; /* ptyp[31], res[10-30], pnum[0-9] */ 178 }; 179 180 static bool qm_ecir2_is_dcp(const struct qm_ecir2 *p) 181 { 182 return p->info & BIT(31); 183 } 184 185 static int qm_ecir2_get_pnum(const struct qm_ecir2 *p) 186 { 187 return p->info & (BIT(10) - 1); 188 } 189 190 struct qm_eadr { 191 u32 info; /* memid[24-27], eadr[0-11] */ 192 /* v3: memid[24-28], eadr[0-15] */ 193 }; 194 195 static int qm_eadr_get_memid(const struct qm_eadr *p) 196 { 197 return (p->info >> 24) & 0xf; 198 } 199 200 static int qm_eadr_get_eadr(const struct qm_eadr *p) 201 { 202 return p->info & (BIT(12) - 1); 203 } 204 205 static int qm_eadr_v3_get_memid(const struct qm_eadr *p) 206 { 207 return (p->info >> 24) & 0x1f; 208 } 209 210 static int qm_eadr_v3_get_eadr(const struct qm_eadr *p) 211 { 212 return p->info & (BIT(16) - 1); 213 } 214 215 struct qman_hwerr_txt { 216 u32 mask; 217 const char *txt; 218 }; 219 220 221 static const struct qman_hwerr_txt qman_hwerr_txts[] = { 222 { QM_EIRQ_CIDE, "Corenet Initiator Data Error" }, 223 { QM_EIRQ_CTDE, "Corenet Target Data Error" }, 224 { QM_EIRQ_CITT, "Corenet Invalid Target Transaction" }, 225 { QM_EIRQ_PLWI, "PFDR Low Watermark" }, 226 { QM_EIRQ_MBEI, "Multi-bit ECC Error" }, 227 { QM_EIRQ_SBEI, "Single-bit ECC Error" }, 228 { QM_EIRQ_PEBI, "PFDR Enqueues Blocked Interrupt" }, 229 { QM_EIRQ_ICVI, "Invalid Command Verb" }, 230 { QM_EIRQ_IFSI, "Invalid Flow Control State" }, 231 { QM_EIRQ_IDDI, "Invalid Dequeue (Direct-connect)" }, 232 { QM_EIRQ_IDFI, "Invalid Dequeue FQ" }, 233 { QM_EIRQ_IDSI, "Invalid Dequeue Source" }, 234 { QM_EIRQ_IDQI, "Invalid Dequeue Queue" }, 235 { QM_EIRQ_IECE, "Invalid Enqueue Configuration" }, 236 { QM_EIRQ_IEOI, "Invalid Enqueue Overflow" }, 237 { QM_EIRQ_IESI, "Invalid Enqueue State" }, 238 { QM_EIRQ_IECI, "Invalid Enqueue Channel" }, 239 { QM_EIRQ_IEQI, "Invalid Enqueue Queue" }, 240 }; 241 242 struct qman_error_info_mdata { 243 u16 addr_mask; 244 u16 bits; 245 const char *txt; 246 }; 247 248 static const struct qman_error_info_mdata error_mdata[] = { 249 { 0x01FF, 24, "FQD cache tag memory 0" }, 250 { 0x01FF, 24, "FQD cache tag memory 1" }, 251 { 0x01FF, 24, "FQD cache tag memory 2" }, 252 { 0x01FF, 24, "FQD cache tag memory 3" }, 253 { 0x0FFF, 512, "FQD cache memory" }, 254 { 0x07FF, 128, "SFDR memory" }, 255 { 0x01FF, 72, "WQ context memory" }, 256 { 0x00FF, 240, "CGR memory" }, 257 { 0x00FF, 302, "Internal Order Restoration List memory" }, 258 { 0x01FF, 256, "SW portal ring memory" }, 259 }; 260 261 #define QMAN_ERRS_TO_DISABLE (QM_EIRQ_PLWI | QM_EIRQ_PEBI) 262 263 /* 264 * TODO: unimplemented registers 265 * 266 * Keeping a list here of QMan registers I have not yet covered; 267 * QCSP_DD_IHRSR, QCSP_DD_IHRFR, QCSP_DD_HASR, 268 * DCP_DD_IHRSR, DCP_DD_IHRFR, DCP_DD_HASR, CM_CFG, 269 * QMAN_EECC, QMAN_SBET, QMAN_EINJ, QMAN_SBEC0-12 270 */ 271 272 /* Pointer to the start of the QMan's CCSR space */ 273 static u32 __iomem *qm_ccsr_start; 274 /* A SDQCR mask comprising all the available/visible pool channels */ 275 static u32 qm_pools_sdqcr; 276 static int __qman_probed; 277 static int __qman_requires_cleanup; 278 279 static inline u32 qm_ccsr_in(u32 offset) 280 { 281 return ioread32be(qm_ccsr_start + offset/4); 282 } 283 284 static inline void qm_ccsr_out(u32 offset, u32 val) 285 { 286 iowrite32be(val, qm_ccsr_start + offset/4); 287 } 288 289 u32 qm_get_pools_sdqcr(void) 290 { 291 return qm_pools_sdqcr; 292 } 293 294 enum qm_dc_portal { 295 qm_dc_portal_fman0 = 0, 296 qm_dc_portal_fman1 = 1 297 }; 298 299 static void qm_set_dc(enum qm_dc_portal portal, int ed, u8 sernd) 300 { 301 DPAA_ASSERT(!ed || portal == qm_dc_portal_fman0 || 302 portal == qm_dc_portal_fman1); 303 if ((qman_ip_rev & 0xFF00) >= QMAN_REV30) 304 qm_ccsr_out(REG_DCP_CFG(portal), 305 (ed ? 0x1000 : 0) | (sernd & 0x3ff)); 306 else 307 qm_ccsr_out(REG_DCP_CFG(portal), 308 (ed ? 0x100 : 0) | (sernd & 0x1f)); 309 } 310 311 static void qm_set_wq_scheduling(enum qm_wq_class wq_class, 312 u8 cs_elev, u8 csw2, u8 csw3, u8 csw4, 313 u8 csw5, u8 csw6, u8 csw7) 314 { 315 qm_ccsr_out(REG_WQ_CS_CFG(wq_class), ((cs_elev & 0xff) << 24) | 316 ((csw2 & 0x7) << 20) | ((csw3 & 0x7) << 16) | 317 ((csw4 & 0x7) << 12) | ((csw5 & 0x7) << 8) | 318 ((csw6 & 0x7) << 4) | (csw7 & 0x7)); 319 } 320 321 static void qm_set_hid(void) 322 { 323 qm_ccsr_out(REG_HID_CFG, 0); 324 } 325 326 static void qm_set_corenet_initiator(void) 327 { 328 qm_ccsr_out(REG_CI_SCHED_CFG, QM_CI_SCHED_CFG_SRCCIV_EN | 329 (QM_CI_SCHED_CFG_SRCCIV << 24) | 330 (QM_CI_SCHED_CFG_SRQ_W << 8) | 331 (QM_CI_SCHED_CFG_RW_W << 4) | 332 QM_CI_SCHED_CFG_BMAN_W); 333 } 334 335 static void qm_get_version(u16 *id, u8 *major, u8 *minor) 336 { 337 u32 v = qm_ccsr_in(REG_IP_REV_1); 338 *id = (v >> 16); 339 *major = (v >> 8) & 0xff; 340 *minor = v & 0xff; 341 } 342 343 #define PFDR_AR_EN BIT(31) 344 static int qm_set_memory(enum qm_memory memory, u64 ba, u32 size) 345 { 346 void *ptr; 347 u32 offset = (memory == qm_memory_fqd) ? REG_FQD_BARE : REG_PFDR_BARE; 348 u32 exp = ilog2(size); 349 u32 bar, bare; 350 351 /* choke if size isn't within range */ 352 DPAA_ASSERT((size >= 4096) && (size <= 1024*1024*1024) && 353 is_power_of_2(size)); 354 /* choke if 'ba' has lower-alignment than 'size' */ 355 DPAA_ASSERT(!(ba & (size - 1))); 356 357 /* Check to see if QMan has already been initialized */ 358 bar = qm_ccsr_in(offset + REG_offset_BAR); 359 if (bar) { 360 /* Maker sure ba == what was programmed) */ 361 bare = qm_ccsr_in(offset); 362 if (bare != upper_32_bits(ba) || bar != lower_32_bits(ba)) { 363 pr_err("Attempted to reinitialize QMan with different BAR, got 0x%llx read BARE=0x%x BAR=0x%x\n", 364 ba, bare, bar); 365 return -ENOMEM; 366 } 367 __qman_requires_cleanup = 1; 368 /* Return 1 to indicate memory was previously programmed */ 369 return 1; 370 } 371 /* Need to temporarily map the area to make sure it is zeroed */ 372 ptr = memremap(ba, size, MEMREMAP_WB); 373 if (!ptr) { 374 pr_crit("memremap() of QMan private memory failed\n"); 375 return -ENOMEM; 376 } 377 memset(ptr, 0, size); 378 379 #ifdef CONFIG_PPC 380 /* 381 * PPC doesn't appear to flush the cache on memunmap() but the 382 * cache must be flushed since QMan does non coherent accesses 383 * to this memory 384 */ 385 flush_dcache_range((unsigned long) ptr, (unsigned long) ptr+size); 386 #endif 387 memunmap(ptr); 388 389 qm_ccsr_out(offset, upper_32_bits(ba)); 390 qm_ccsr_out(offset + REG_offset_BAR, lower_32_bits(ba)); 391 qm_ccsr_out(offset + REG_offset_AR, PFDR_AR_EN | (exp - 1)); 392 return 0; 393 } 394 395 static void qm_set_pfdr_threshold(u32 th, u8 k) 396 { 397 qm_ccsr_out(REG_PFDR_FP_LWIT, th & 0xffffff); 398 qm_ccsr_out(REG_PFDR_CFG, k); 399 } 400 401 static void qm_set_sfdr_threshold(u16 th) 402 { 403 qm_ccsr_out(REG_SFDR_CFG, th & 0x3ff); 404 } 405 406 static int qm_init_pfdr(struct device *dev, u32 pfdr_start, u32 num) 407 { 408 u8 rslt = MCR_get_rslt(qm_ccsr_in(REG_MCR)); 409 410 DPAA_ASSERT(pfdr_start && !(pfdr_start & 7) && !(num & 7) && num); 411 /* Make sure the command interface is 'idle' */ 412 if (!MCR_rslt_idle(rslt)) { 413 dev_crit(dev, "QMAN_MCR isn't idle"); 414 WARN_ON(1); 415 } 416 417 /* Write the MCR command params then the verb */ 418 qm_ccsr_out(REG_MCP(0), pfdr_start); 419 /* 420 * TODO: remove this - it's a workaround for a model bug that is 421 * corrected in more recent versions. We use the workaround until 422 * everyone has upgraded. 423 */ 424 qm_ccsr_out(REG_MCP(1), pfdr_start + num - 16); 425 dma_wmb(); 426 qm_ccsr_out(REG_MCR, MCR_INIT_PFDR); 427 /* Poll for the result */ 428 do { 429 rslt = MCR_get_rslt(qm_ccsr_in(REG_MCR)); 430 } while (!MCR_rslt_idle(rslt)); 431 if (MCR_rslt_ok(rslt)) 432 return 0; 433 if (MCR_rslt_eaccess(rslt)) 434 return -EACCES; 435 if (MCR_rslt_inval(rslt)) 436 return -EINVAL; 437 dev_crit(dev, "Unexpected result from MCR_INIT_PFDR: %02x\n", rslt); 438 return -ENODEV; 439 } 440 441 /* 442 * QMan needs two global memory areas initialized at boot time: 443 * 1) FQD: Frame Queue Descriptors used to manage frame queues 444 * 2) PFDR: Packed Frame Queue Descriptor Records used to store frames 445 * Both areas are reserved using the device tree reserved memory framework 446 * and the addresses and sizes are initialized when the QMan device is probed 447 */ 448 static dma_addr_t fqd_a, pfdr_a; 449 static size_t fqd_sz, pfdr_sz; 450 451 #ifdef CONFIG_PPC 452 /* 453 * Support for PPC Device Tree backward compatibility when compatible 454 * string is set to fsl-qman-fqd and fsl-qman-pfdr 455 */ 456 static int zero_priv_mem(phys_addr_t addr, size_t sz) 457 { 458 /* map as cacheable, non-guarded */ 459 void __iomem *tmpp = ioremap_cache(addr, sz); 460 461 if (!tmpp) 462 return -ENOMEM; 463 464 memset_io(tmpp, 0, sz); 465 flush_dcache_range((unsigned long)tmpp, 466 (unsigned long)tmpp + sz); 467 iounmap(tmpp); 468 469 return 0; 470 } 471 #endif 472 473 unsigned int qm_get_fqid_maxcnt(void) 474 { 475 return fqd_sz / 64; 476 } 477 478 static void log_edata_bits(struct device *dev, u32 bit_count) 479 { 480 u32 i, j, mask = 0xffffffff; 481 482 dev_warn(dev, "ErrInt, EDATA:\n"); 483 i = bit_count / 32; 484 if (bit_count % 32) { 485 i++; 486 mask = ~(mask << bit_count % 32); 487 } 488 j = 16 - i; 489 dev_warn(dev, " 0x%08x\n", qm_ccsr_in(REG_EDATA(j)) & mask); 490 j++; 491 for (; j < 16; j++) 492 dev_warn(dev, " 0x%08x\n", qm_ccsr_in(REG_EDATA(j))); 493 } 494 495 static void log_additional_error_info(struct device *dev, u32 isr_val, 496 u32 ecsr_val) 497 { 498 struct qm_ecir ecir_val; 499 struct qm_eadr eadr_val; 500 int memid; 501 502 ecir_val.info = qm_ccsr_in(REG_ECIR); 503 /* Is portal info valid */ 504 if ((qman_ip_rev & 0xFF00) >= QMAN_REV30) { 505 struct qm_ecir2 ecir2_val; 506 507 ecir2_val.info = qm_ccsr_in(REG_ECIR2); 508 if (ecsr_val & PORTAL_ECSR_ERR) { 509 dev_warn(dev, "ErrInt: %s id %d\n", 510 qm_ecir2_is_dcp(&ecir2_val) ? "DCP" : "SWP", 511 qm_ecir2_get_pnum(&ecir2_val)); 512 } 513 if (ecsr_val & (FQID_ECSR_ERR | QM_EIRQ_IECE)) 514 dev_warn(dev, "ErrInt: ecir.fqid 0x%x\n", 515 qm_ecir_get_fqid(&ecir_val)); 516 517 if (ecsr_val & (QM_EIRQ_SBEI|QM_EIRQ_MBEI)) { 518 eadr_val.info = qm_ccsr_in(REG_EADR); 519 memid = qm_eadr_v3_get_memid(&eadr_val); 520 dev_warn(dev, "ErrInt: EADR Memory: %s, 0x%x\n", 521 error_mdata[memid].txt, 522 error_mdata[memid].addr_mask 523 & qm_eadr_v3_get_eadr(&eadr_val)); 524 log_edata_bits(dev, error_mdata[memid].bits); 525 } 526 } else { 527 if (ecsr_val & PORTAL_ECSR_ERR) { 528 dev_warn(dev, "ErrInt: %s id %d\n", 529 qm_ecir_is_dcp(&ecir_val) ? "DCP" : "SWP", 530 qm_ecir_get_pnum(&ecir_val)); 531 } 532 if (ecsr_val & FQID_ECSR_ERR) 533 dev_warn(dev, "ErrInt: ecir.fqid 0x%x\n", 534 qm_ecir_get_fqid(&ecir_val)); 535 536 if (ecsr_val & (QM_EIRQ_SBEI|QM_EIRQ_MBEI)) { 537 eadr_val.info = qm_ccsr_in(REG_EADR); 538 memid = qm_eadr_get_memid(&eadr_val); 539 dev_warn(dev, "ErrInt: EADR Memory: %s, 0x%x\n", 540 error_mdata[memid].txt, 541 error_mdata[memid].addr_mask 542 & qm_eadr_get_eadr(&eadr_val)); 543 log_edata_bits(dev, error_mdata[memid].bits); 544 } 545 } 546 } 547 548 static irqreturn_t qman_isr(int irq, void *ptr) 549 { 550 u32 isr_val, ier_val, ecsr_val, isr_mask, i; 551 struct device *dev = ptr; 552 553 ier_val = qm_ccsr_in(REG_ERR_IER); 554 isr_val = qm_ccsr_in(REG_ERR_ISR); 555 ecsr_val = qm_ccsr_in(REG_ECSR); 556 isr_mask = isr_val & ier_val; 557 558 if (!isr_mask) 559 return IRQ_NONE; 560 561 for (i = 0; i < ARRAY_SIZE(qman_hwerr_txts); i++) { 562 if (qman_hwerr_txts[i].mask & isr_mask) { 563 dev_err_ratelimited(dev, "ErrInt: %s\n", 564 qman_hwerr_txts[i].txt); 565 if (qman_hwerr_txts[i].mask & ecsr_val) { 566 log_additional_error_info(dev, isr_mask, 567 ecsr_val); 568 /* Re-arm error capture registers */ 569 qm_ccsr_out(REG_ECSR, ecsr_val); 570 } 571 if (qman_hwerr_txts[i].mask & QMAN_ERRS_TO_DISABLE) { 572 dev_dbg(dev, "Disabling error 0x%x\n", 573 qman_hwerr_txts[i].mask); 574 ier_val &= ~qman_hwerr_txts[i].mask; 575 qm_ccsr_out(REG_ERR_IER, ier_val); 576 } 577 } 578 } 579 qm_ccsr_out(REG_ERR_ISR, isr_val); 580 581 return IRQ_HANDLED; 582 } 583 584 static int qman_init_ccsr(struct device *dev) 585 { 586 int i, err; 587 588 /* FQD memory */ 589 err = qm_set_memory(qm_memory_fqd, fqd_a, fqd_sz); 590 if (err < 0) 591 return err; 592 /* PFDR memory */ 593 err = qm_set_memory(qm_memory_pfdr, pfdr_a, pfdr_sz); 594 if (err < 0) 595 return err; 596 /* Only initialize PFDRs if the QMan was not initialized before */ 597 if (err == 0) { 598 err = qm_init_pfdr(dev, 8, pfdr_sz / 64 - 8); 599 if (err) 600 return err; 601 } 602 /* thresholds */ 603 qm_set_pfdr_threshold(512, 64); 604 qm_set_sfdr_threshold(128); 605 /* clear stale PEBI bit from interrupt status register */ 606 qm_ccsr_out(REG_ERR_ISR, QM_EIRQ_PEBI); 607 /* corenet initiator settings */ 608 qm_set_corenet_initiator(); 609 /* HID settings */ 610 qm_set_hid(); 611 /* Set scheduling weights to defaults */ 612 for (i = qm_wq_first; i <= qm_wq_last; i++) 613 qm_set_wq_scheduling(i, 0, 0, 0, 0, 0, 0, 0); 614 /* We are not prepared to accept ERNs for hardware enqueues */ 615 qm_set_dc(qm_dc_portal_fman0, 1, 0); 616 qm_set_dc(qm_dc_portal_fman1, 1, 0); 617 return 0; 618 } 619 620 #define LIO_CFG_LIODN_MASK 0x0fff0000 621 void __qman_liodn_fixup(u16 channel) 622 { 623 static int done; 624 static u32 liodn_offset; 625 u32 before, after; 626 int idx = channel - QM_CHANNEL_SWPORTAL0; 627 628 if ((qman_ip_rev & 0xFF00) >= QMAN_REV30) 629 before = qm_ccsr_in(REG_REV3_QCSP_LIO_CFG(idx)); 630 else 631 before = qm_ccsr_in(REG_QCSP_LIO_CFG(idx)); 632 if (!done) { 633 liodn_offset = before & LIO_CFG_LIODN_MASK; 634 done = 1; 635 return; 636 } 637 after = (before & (~LIO_CFG_LIODN_MASK)) | liodn_offset; 638 if ((qman_ip_rev & 0xFF00) >= QMAN_REV30) 639 qm_ccsr_out(REG_REV3_QCSP_LIO_CFG(idx), after); 640 else 641 qm_ccsr_out(REG_QCSP_LIO_CFG(idx), after); 642 } 643 644 #define IO_CFG_SDEST_MASK 0x00ff0000 645 void qman_set_sdest(u16 channel, unsigned int cpu_idx) 646 { 647 int idx = channel - QM_CHANNEL_SWPORTAL0; 648 u32 before, after; 649 650 if ((qman_ip_rev & 0xFF00) >= QMAN_REV30) { 651 before = qm_ccsr_in(REG_REV3_QCSP_IO_CFG(idx)); 652 /* Each pair of vcpu share the same SRQ(SDEST) */ 653 cpu_idx /= 2; 654 after = (before & (~IO_CFG_SDEST_MASK)) | (cpu_idx << 16); 655 qm_ccsr_out(REG_REV3_QCSP_IO_CFG(idx), after); 656 } else { 657 before = qm_ccsr_in(REG_QCSP_IO_CFG(idx)); 658 after = (before & (~IO_CFG_SDEST_MASK)) | (cpu_idx << 16); 659 qm_ccsr_out(REG_QCSP_IO_CFG(idx), after); 660 } 661 } 662 663 static int qman_resource_init(struct device *dev) 664 { 665 int pool_chan_num, cgrid_num; 666 int ret, i; 667 668 switch (qman_ip_rev >> 8) { 669 case 1: 670 pool_chan_num = 15; 671 cgrid_num = 256; 672 break; 673 case 2: 674 pool_chan_num = 3; 675 cgrid_num = 64; 676 break; 677 case 3: 678 pool_chan_num = 15; 679 cgrid_num = 256; 680 break; 681 default: 682 return -ENODEV; 683 } 684 685 ret = gen_pool_add(qm_qpalloc, qm_channel_pool1 | DPAA_GENALLOC_OFF, 686 pool_chan_num, -1); 687 if (ret) { 688 dev_err(dev, "Failed to seed pool channels (%d)\n", ret); 689 return ret; 690 } 691 692 ret = gen_pool_add(qm_cgralloc, DPAA_GENALLOC_OFF, cgrid_num, -1); 693 if (ret) { 694 dev_err(dev, "Failed to seed CGRID range (%d)\n", ret); 695 return ret; 696 } 697 698 /* parse pool channels into the SDQCR mask */ 699 for (i = 0; i < cgrid_num; i++) 700 qm_pools_sdqcr |= QM_SDQCR_CHANNELS_POOL_CONV(i); 701 702 ret = gen_pool_add(qm_fqalloc, QM_FQID_RANGE_START | DPAA_GENALLOC_OFF, 703 qm_get_fqid_maxcnt() - QM_FQID_RANGE_START, -1); 704 if (ret) { 705 dev_err(dev, "Failed to seed FQID range (%d)\n", ret); 706 return ret; 707 } 708 709 return 0; 710 } 711 712 int qman_is_probed(void) 713 { 714 return __qman_probed; 715 } 716 EXPORT_SYMBOL_GPL(qman_is_probed); 717 718 int qman_requires_cleanup(void) 719 { 720 return __qman_requires_cleanup; 721 } 722 723 void qman_done_cleanup(void) 724 { 725 qman_enable_irqs(); 726 __qman_requires_cleanup = 0; 727 } 728 729 730 static int fsl_qman_probe(struct platform_device *pdev) 731 { 732 struct device *dev = &pdev->dev; 733 struct device_node *node = dev->of_node; 734 struct resource *res; 735 int ret, err_irq; 736 u16 id; 737 u8 major, minor; 738 739 __qman_probed = -1; 740 741 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 742 if (!res) { 743 dev_err(dev, "Can't get %pOF property 'IORESOURCE_MEM'\n", 744 node); 745 return -ENXIO; 746 } 747 qm_ccsr_start = devm_ioremap(dev, res->start, resource_size(res)); 748 if (!qm_ccsr_start) 749 return -ENXIO; 750 751 qm_get_version(&id, &major, &minor); 752 if (major == 1 && minor == 0) { 753 dev_err(dev, "Rev1.0 on P4080 rev1 is not supported!\n"); 754 return -ENODEV; 755 } else if (major == 1 && minor == 1) 756 qman_ip_rev = QMAN_REV11; 757 else if (major == 1 && minor == 2) 758 qman_ip_rev = QMAN_REV12; 759 else if (major == 2 && minor == 0) 760 qman_ip_rev = QMAN_REV20; 761 else if (major == 3 && minor == 0) 762 qman_ip_rev = QMAN_REV30; 763 else if (major == 3 && minor == 1) 764 qman_ip_rev = QMAN_REV31; 765 else if (major == 3 && minor == 2) 766 qman_ip_rev = QMAN_REV32; 767 else { 768 dev_err(dev, "Unknown QMan version\n"); 769 return -ENODEV; 770 } 771 772 if ((qman_ip_rev & 0xff00) >= QMAN_REV30) { 773 qm_channel_pool1 = QMAN_CHANNEL_POOL1_REV3; 774 qm_channel_caam = QMAN_CHANNEL_CAAM_REV3; 775 } 776 777 /* 778 * Order of memory regions is assumed as FQD followed by PFDR 779 * in order to ensure allocations from the correct regions the 780 * driver initializes then allocates each piece in order 781 */ 782 ret = qbman_init_private_mem(dev, 0, "fsl,qman-fqd", &fqd_a, &fqd_sz); 783 if (ret) { 784 dev_err(dev, "qbman_init_private_mem() for FQD failed 0x%x\n", 785 ret); 786 return -ENODEV; 787 } 788 #ifdef CONFIG_PPC 789 /* 790 * For PPC backward DT compatibility 791 * FQD memory MUST be zero'd by software 792 */ 793 zero_priv_mem(fqd_a, fqd_sz); 794 #endif 795 dev_dbg(dev, "Allocated FQD 0x%llx 0x%zx\n", fqd_a, fqd_sz); 796 797 /* Setup PFDR memory */ 798 ret = qbman_init_private_mem(dev, 1, "fsl,qman-pfdr", &pfdr_a, &pfdr_sz); 799 if (ret) { 800 dev_err(dev, "qbman_init_private_mem() for PFDR failed 0x%x\n", 801 ret); 802 return -ENODEV; 803 } 804 dev_dbg(dev, "Allocated PFDR 0x%llx 0x%zx\n", pfdr_a, pfdr_sz); 805 806 ret = qman_init_ccsr(dev); 807 if (ret) { 808 dev_err(dev, "CCSR setup failed\n"); 809 return ret; 810 } 811 812 err_irq = platform_get_irq(pdev, 0); 813 if (err_irq <= 0) { 814 dev_info(dev, "Can't get %pOF property 'interrupts'\n", 815 node); 816 return -ENODEV; 817 } 818 ret = devm_request_irq(dev, err_irq, qman_isr, IRQF_SHARED, "qman-err", 819 dev); 820 if (ret) { 821 dev_err(dev, "devm_request_irq() failed %d for '%pOF'\n", 822 ret, node); 823 return ret; 824 } 825 826 /* 827 * Write-to-clear any stale bits, (eg. starvation being asserted prior 828 * to resource allocation during driver init). 829 */ 830 qm_ccsr_out(REG_ERR_ISR, 0xffffffff); 831 /* Enable Error Interrupts */ 832 qm_ccsr_out(REG_ERR_IER, 0xffffffff); 833 834 qm_fqalloc = devm_gen_pool_create(dev, 0, -1, "qman-fqalloc"); 835 if (IS_ERR(qm_fqalloc)) { 836 ret = PTR_ERR(qm_fqalloc); 837 dev_err(dev, "qman-fqalloc pool init failed (%d)\n", ret); 838 return ret; 839 } 840 841 qm_qpalloc = devm_gen_pool_create(dev, 0, -1, "qman-qpalloc"); 842 if (IS_ERR(qm_qpalloc)) { 843 ret = PTR_ERR(qm_qpalloc); 844 dev_err(dev, "qman-qpalloc pool init failed (%d)\n", ret); 845 return ret; 846 } 847 848 qm_cgralloc = devm_gen_pool_create(dev, 0, -1, "qman-cgralloc"); 849 if (IS_ERR(qm_cgralloc)) { 850 ret = PTR_ERR(qm_cgralloc); 851 dev_err(dev, "qman-cgralloc pool init failed (%d)\n", ret); 852 return ret; 853 } 854 855 ret = qman_resource_init(dev); 856 if (ret) 857 return ret; 858 859 ret = qman_alloc_fq_table(qm_get_fqid_maxcnt()); 860 if (ret) 861 return ret; 862 863 ret = qman_wq_alloc(); 864 if (ret) 865 return ret; 866 867 __qman_probed = 1; 868 869 return 0; 870 } 871 872 static const struct of_device_id fsl_qman_ids[] = { 873 { 874 .compatible = "fsl,qman", 875 }, 876 {} 877 }; 878 879 static struct platform_driver fsl_qman_driver = { 880 .driver = { 881 .name = KBUILD_MODNAME, 882 .of_match_table = fsl_qman_ids, 883 .suppress_bind_attrs = true, 884 }, 885 .probe = fsl_qman_probe, 886 }; 887 888 builtin_platform_driver(fsl_qman_driver); 889