1287117Scem/*- 2287117Scem * Copyright (C) 2012 Intel Corporation 3287117Scem * All rights reserved. 4287117Scem * 5287117Scem * Redistribution and use in source and binary forms, with or without 6287117Scem * modification, are permitted provided that the following conditions 7287117Scem * are met: 8287117Scem * 1. Redistributions of source code must retain the above copyright 9287117Scem * notice, this list of conditions and the following disclaimer. 10287117Scem * 2. Redistributions in binary form must reproduce the above copyright 11287117Scem * notice, this list of conditions and the following disclaimer in the 12287117Scem * documentation and/or other materials provided with the distribution. 13287117Scem * 14287117Scem * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15287117Scem * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16287117Scem * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17287117Scem * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18287117Scem * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19287117Scem * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20287117Scem * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21287117Scem * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22287117Scem * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23287117Scem * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24287117Scem * SUCH DAMAGE. 25287117Scem */ 26287117Scem 27287117Scem#include <sys/cdefs.h> 28287117Scem__FBSDID("$FreeBSD: stable/11/sys/dev/ioat/ioat_test.c 355198 2019-11-29 00:38:34Z mav $"); 29287117Scem 30287117Scem#include <sys/param.h> 31287117Scem#include <sys/systm.h> 32287117Scem#include <sys/bus.h> 33287117Scem#include <sys/conf.h> 34287117Scem#include <sys/ioccom.h> 35287117Scem#include <sys/kernel.h> 36287117Scem#include <sys/lock.h> 37287117Scem#include <sys/malloc.h> 38287117Scem#include <sys/module.h> 39287117Scem#include <sys/mutex.h> 40287117Scem#include <sys/rman.h> 41287117Scem#include <sys/sysctl.h> 42287117Scem#include <dev/pci/pcireg.h> 43287117Scem#include <dev/pci/pcivar.h> 44287117Scem#include <machine/bus.h> 45287117Scem#include <machine/resource.h> 46289776Scem#include <machine/stdarg.h> 47287117Scem#include <vm/vm.h> 48290129Scem#include <vm/vm_param.h> 49287117Scem#include <vm/pmap.h> 50287117Scem 51287117Scem#include "ioat.h" 52287117Scem#include "ioat_hw.h" 53287117Scem#include "ioat_internal.h" 54287117Scem#include "ioat_test.h" 55287117Scem 56289733Scem#ifndef time_after 57289733Scem#define time_after(a,b) ((long)(b) - (long)(a) < 0) 58289733Scem#endif 59289733Scem 60287117ScemMALLOC_DEFINE(M_IOAT_TEST, "ioat_test", "ioat test allocations"); 61287117Scem 62289733Scem#define IOAT_MAX_BUFS 256 63287117Scem 64287117Scemstruct test_transaction { 65287117Scem void *buf[IOAT_MAX_BUFS]; 66287117Scem uint32_t length; 67289733Scem uint32_t depth; 68355198Smav uint32_t crc[IOAT_MAX_BUFS]; 69287117Scem struct ioat_test *test; 70289733Scem TAILQ_ENTRY(test_transaction) entry; 71287117Scem}; 72287117Scem 73289733Scem#define IT_LOCK() mtx_lock(&ioat_test_lk) 74289733Scem#define IT_UNLOCK() mtx_unlock(&ioat_test_lk) 75289733Scem#define IT_ASSERT() mtx_assert(&ioat_test_lk, MA_OWNED) 76289733Scemstatic struct mtx ioat_test_lk; 77289733ScemMTX_SYSINIT(ioat_test_lk, &ioat_test_lk, "test coordination mtx", MTX_DEF); 78289733Scem 79287117Scemstatic int g_thread_index = 1; 80287117Scemstatic struct cdev *g_ioat_cdev = NULL; 81287117Scem 82289777Scem#define ioat_test_log(v, ...) _ioat_test_log((v), "ioat_test: " __VA_ARGS__) 83315070Savgstatic void _ioat_test_log(int verbosity, const char *fmt, ...); 84289776Scem 85287117Scemstatic void 86287117Scemioat_test_transaction_destroy(struct test_transaction *tx) 87287117Scem{ 88292044Scem struct ioat_test *test; 89287117Scem int i; 90287117Scem 91292044Scem test = tx->test; 92292044Scem 93287117Scem for (i = 0; i < IOAT_MAX_BUFS; i++) { 94287117Scem if (tx->buf[i] != NULL) { 95292044Scem if (test->testkind == IOAT_TEST_DMA_8K) 96292044Scem free(tx->buf[i], M_IOAT_TEST); 97292044Scem else 98292044Scem contigfree(tx->buf[i], tx->length, M_IOAT_TEST); 99287117Scem tx->buf[i] = NULL; 100287117Scem } 101287117Scem } 102287117Scem 103287117Scem free(tx, M_IOAT_TEST); 104287117Scem} 105287117Scem 106287117Scemstatic struct 107292044Scemtest_transaction *ioat_test_transaction_create(struct ioat_test *test, 108292044Scem unsigned num_buffers) 109287117Scem{ 110287117Scem struct test_transaction *tx; 111289733Scem unsigned i; 112287117Scem 113289733Scem tx = malloc(sizeof(*tx), M_IOAT_TEST, M_NOWAIT | M_ZERO); 114287117Scem if (tx == NULL) 115287117Scem return (NULL); 116287117Scem 117292044Scem tx->length = test->buffer_size; 118287117Scem 119287117Scem for (i = 0; i < num_buffers; i++) { 120292044Scem if (test->testkind == IOAT_TEST_DMA_8K) 121292044Scem tx->buf[i] = malloc(test->buffer_size, M_IOAT_TEST, 122292044Scem M_NOWAIT); 123292044Scem else 124292044Scem tx->buf[i] = contigmalloc(test->buffer_size, 125292044Scem M_IOAT_TEST, M_NOWAIT, 0, BUS_SPACE_MAXADDR, 126292044Scem PAGE_SIZE, 0); 127287117Scem 128287117Scem if (tx->buf[i] == NULL) { 129287117Scem ioat_test_transaction_destroy(tx); 130287117Scem return (NULL); 131287117Scem } 132287117Scem } 133287117Scem return (tx); 134287117Scem} 135287117Scem 136290129Scemstatic void 137290129Scemdump_hex(void *p, size_t chunks) 138290129Scem{ 139290129Scem size_t i, j; 140290129Scem 141290129Scem for (i = 0; i < chunks; i++) { 142290129Scem for (j = 0; j < 8; j++) 143290129Scem printf("%08x ", ((uint32_t *)p)[i * 8 + j]); 144290129Scem printf("\n"); 145290129Scem } 146290129Scem} 147290129Scem 148289733Scemstatic bool 149289733Scemioat_compare_ok(struct test_transaction *tx) 150289733Scem{ 151290021Scem struct ioat_test *test; 152290021Scem char *dst, *src; 153290021Scem uint32_t i, j; 154289733Scem 155290021Scem test = tx->test; 156290021Scem 157289733Scem for (i = 0; i < tx->depth; i++) { 158290021Scem dst = tx->buf[2 * i + 1]; 159290021Scem src = tx->buf[2 * i]; 160290021Scem 161290021Scem if (test->testkind == IOAT_TEST_FILL) { 162290021Scem for (j = 0; j < tx->length; j += sizeof(uint64_t)) { 163290021Scem if (memcmp(src, &dst[j], 164290021Scem MIN(sizeof(uint64_t), tx->length - j)) 165290021Scem != 0) 166290021Scem return (false); 167290021Scem } 168290129Scem } else if (test->testkind == IOAT_TEST_DMA) { 169290021Scem if (memcmp(src, dst, tx->length) != 0) 170290021Scem return (false); 171290129Scem } else if (test->testkind == IOAT_TEST_RAW_DMA) { 172290129Scem if (test->raw_write) 173290129Scem dst = test->raw_vtarget; 174290129Scem dump_hex(dst, tx->length / 32); 175290129Scem } 176289733Scem } 177289733Scem return (true); 178289733Scem} 179289733Scem 180287117Scemstatic void 181290229Scemioat_dma_test_callback(void *arg, int error) 182287117Scem{ 183287117Scem struct test_transaction *tx; 184287117Scem struct ioat_test *test; 185287117Scem 186290229Scem if (error != 0) 187290229Scem ioat_test_log(0, "%s: Got error: %d\n", __func__, error); 188290229Scem 189287117Scem tx = arg; 190287117Scem test = tx->test; 191287117Scem 192289733Scem if (test->verify && !ioat_compare_ok(tx)) { 193289776Scem ioat_test_log(0, "miscompare found\n"); 194289733Scem atomic_add_32(&test->status[IOAT_TEST_MISCOMPARE], tx->depth); 195289733Scem } else if (!test->too_late) 196289733Scem atomic_add_32(&test->status[IOAT_TEST_OK], tx->depth); 197289733Scem 198289733Scem IT_LOCK(); 199289733Scem TAILQ_REMOVE(&test->pend_q, tx, entry); 200289733Scem TAILQ_INSERT_TAIL(&test->free_q, tx, entry); 201289733Scem wakeup(&test->free_q); 202289733Scem IT_UNLOCK(); 203289733Scem} 204289733Scem 205289733Scemstatic int 206289733Scemioat_test_prealloc_memory(struct ioat_test *test, int index) 207289733Scem{ 208289733Scem uint32_t i, j, k; 209289733Scem struct test_transaction *tx; 210289733Scem 211289733Scem for (i = 0; i < test->transactions; i++) { 212292044Scem tx = ioat_test_transaction_create(test, test->chain_depth * 2); 213289733Scem if (tx == NULL) { 214289776Scem ioat_test_log(0, "tx == NULL - memory exhausted\n"); 215289733Scem test->status[IOAT_TEST_NO_MEMORY]++; 216289733Scem return (ENOMEM); 217289733Scem } 218289733Scem 219289733Scem TAILQ_INSERT_HEAD(&test->free_q, tx, entry); 220289733Scem 221289733Scem tx->test = test; 222289733Scem tx->depth = test->chain_depth; 223289733Scem 224289733Scem /* fill in source buffers */ 225289733Scem for (j = 0; j < (tx->length / sizeof(uint32_t)); j++) { 226289733Scem uint32_t val = j + (index << 28); 227289733Scem 228289733Scem for (k = 0; k < test->chain_depth; k++) { 229289733Scem ((uint32_t *)tx->buf[2*k])[j] = ~val; 230289733Scem ((uint32_t *)tx->buf[2*k+1])[j] = val; 231289733Scem } 232289733Scem } 233287117Scem } 234289733Scem return (0); 235287117Scem} 236287117Scem 237287117Scemstatic void 238289733Scemioat_test_release_memory(struct ioat_test *test) 239289733Scem{ 240289733Scem struct test_transaction *tx, *s; 241289733Scem 242289733Scem TAILQ_FOREACH_SAFE(tx, &test->free_q, entry, s) 243289733Scem ioat_test_transaction_destroy(tx); 244289733Scem TAILQ_INIT(&test->free_q); 245289733Scem 246289733Scem TAILQ_FOREACH_SAFE(tx, &test->pend_q, entry, s) 247289733Scem ioat_test_transaction_destroy(tx); 248289733Scem TAILQ_INIT(&test->pend_q); 249289733Scem} 250289733Scem 251289733Scemstatic void 252289733Scemioat_test_submit_1_tx(struct ioat_test *test, bus_dmaengine_t dma) 253289733Scem{ 254289733Scem struct test_transaction *tx; 255289733Scem struct bus_dmadesc *desc; 256289733Scem bus_dmaengine_callback_t cb; 257289733Scem bus_addr_t src, dest; 258290021Scem uint64_t fillpattern; 259289733Scem uint32_t i, flags; 260289733Scem 261290021Scem desc = NULL; 262290021Scem 263289733Scem IT_LOCK(); 264289733Scem while (TAILQ_EMPTY(&test->free_q)) 265289733Scem msleep(&test->free_q, &ioat_test_lk, 0, "test_submit", 0); 266289733Scem 267289733Scem tx = TAILQ_FIRST(&test->free_q); 268289733Scem TAILQ_REMOVE(&test->free_q, tx, entry); 269289733Scem TAILQ_INSERT_HEAD(&test->pend_q, tx, entry); 270289733Scem IT_UNLOCK(); 271289733Scem 272292044Scem if (test->testkind != IOAT_TEST_MEMCPY) 273292044Scem ioat_acquire(dma); 274289733Scem for (i = 0; i < tx->depth; i++) { 275292044Scem if (test->testkind == IOAT_TEST_MEMCPY) { 276292044Scem memcpy(tx->buf[2 * i + 1], tx->buf[2 * i], tx->length); 277292044Scem if (i == tx->depth - 1) 278292044Scem ioat_dma_test_callback(tx, 0); 279292044Scem continue; 280292044Scem } 281292044Scem 282289733Scem src = vtophys((vm_offset_t)tx->buf[2*i]); 283289733Scem dest = vtophys((vm_offset_t)tx->buf[2*i+1]); 284289733Scem 285290129Scem if (test->testkind == IOAT_TEST_RAW_DMA) { 286290129Scem if (test->raw_write) 287290129Scem dest = test->raw_target; 288290129Scem else 289290129Scem src = test->raw_target; 290290129Scem } 291290129Scem 292289733Scem if (i == tx->depth - 1) { 293289733Scem cb = ioat_dma_test_callback; 294289733Scem flags = DMA_INT_EN; 295289733Scem } else { 296289733Scem cb = NULL; 297289733Scem flags = 0; 298289733Scem } 299289733Scem 300290129Scem if (test->testkind == IOAT_TEST_DMA || 301290129Scem test->testkind == IOAT_TEST_RAW_DMA) 302290021Scem desc = ioat_copy(dma, dest, src, tx->length, cb, tx, 303290021Scem flags); 304290021Scem else if (test->testkind == IOAT_TEST_FILL) { 305290021Scem fillpattern = *(uint64_t *)tx->buf[2*i]; 306290021Scem desc = ioat_blockfill(dma, dest, fillpattern, 307290021Scem tx->length, cb, tx, flags); 308292044Scem } else if (test->testkind == IOAT_TEST_DMA_8K) { 309292044Scem bus_addr_t src2, dst2; 310292044Scem 311292044Scem src2 = vtophys((vm_offset_t)tx->buf[2*i] + PAGE_SIZE); 312292044Scem dst2 = vtophys((vm_offset_t)tx->buf[2*i+1] + PAGE_SIZE); 313292044Scem 314292044Scem desc = ioat_copy_8k_aligned(dma, dest, dst2, src, src2, 315292044Scem cb, tx, flags); 316355198Smav } else if (test->testkind == IOAT_TEST_DMA_8K_PB) { 317355198Smav bus_addr_t src2, dst2; 318355198Smav 319355198Smav src2 = vtophys((vm_offset_t)tx->buf[2*i+1] + PAGE_SIZE); 320355198Smav dst2 = vtophys((vm_offset_t)tx->buf[2*i] + PAGE_SIZE); 321355198Smav 322355198Smav desc = ioat_copy_8k_aligned(dma, dest, dst2, src, src2, 323355198Smav cb, tx, flags); 324355198Smav } else if (test->testkind == IOAT_TEST_DMA_CRC) { 325355198Smav bus_addr_t crc; 326355198Smav 327355198Smav tx->crc[i] = 0; 328355198Smav crc = vtophys((vm_offset_t)&tx->crc[i]); 329355198Smav desc = ioat_crc(dma, src, tx->length, 330355198Smav NULL, crc, cb, tx, flags | DMA_CRC_STORE); 331355198Smav } else if (test->testkind == IOAT_TEST_DMA_CRC_COPY) { 332355198Smav bus_addr_t crc; 333355198Smav 334355198Smav tx->crc[i] = 0; 335355198Smav crc = vtophys((vm_offset_t)&tx->crc[i]); 336355198Smav desc = ioat_copy_crc(dma, dest, src, tx->length, 337355198Smav NULL, crc, cb, tx, flags | DMA_CRC_STORE); 338290021Scem } 339289733Scem if (desc == NULL) 340290132Scem break; 341289733Scem } 342292044Scem if (test->testkind == IOAT_TEST_MEMCPY) 343292044Scem return; 344289733Scem ioat_release(dma); 345290132Scem 346290132Scem /* 347290132Scem * We couldn't issue an IO -- either the device is being detached or 348290132Scem * the HW reset. Essentially spin until the device comes back up or 349290132Scem * our timer expires. 350290132Scem */ 351290132Scem if (desc == NULL && tx->depth > 0) { 352290132Scem atomic_add_32(&test->status[IOAT_TEST_NO_DMA_ENGINE], tx->depth); 353290132Scem IT_LOCK(); 354290132Scem TAILQ_REMOVE(&test->pend_q, tx, entry); 355290132Scem TAILQ_INSERT_HEAD(&test->free_q, tx, entry); 356290132Scem IT_UNLOCK(); 357290132Scem } 358289733Scem} 359289733Scem 360289733Scemstatic void 361287117Scemioat_dma_test(void *arg) 362287117Scem{ 363292229Scem struct ioat_softc *ioat; 364287117Scem struct ioat_test *test; 365287117Scem bus_dmaengine_t dmaengine; 366287117Scem uint32_t loops; 367292229Scem int index, rc, start, end, error; 368287117Scem 369287117Scem test = arg; 370289733Scem memset(__DEVOLATILE(void *, test->status), 0, sizeof(test->status)); 371287117Scem 372355198Smav if ((test->testkind == IOAT_TEST_DMA_8K || 373355198Smav test->testkind == IOAT_TEST_DMA_8K_PB) && 374292044Scem test->buffer_size != 2 * PAGE_SIZE) { 375292044Scem ioat_test_log(0, "Asked for 8k test and buffer size isn't 8k\n"); 376292044Scem test->status[IOAT_TEST_INVALID_INPUT]++; 377292044Scem return; 378292044Scem } 379292044Scem 380289733Scem if (test->buffer_size > 1024 * 1024) { 381289776Scem ioat_test_log(0, "Buffer size too large >1MB\n"); 382289733Scem test->status[IOAT_TEST_NO_MEMORY]++; 383289733Scem return; 384289733Scem } 385287117Scem 386289733Scem if (test->chain_depth * 2 > IOAT_MAX_BUFS) { 387289776Scem ioat_test_log(0, "Depth too large (> %u)\n", 388289733Scem (unsigned)IOAT_MAX_BUFS / 2); 389289733Scem test->status[IOAT_TEST_NO_MEMORY]++; 390289733Scem return; 391289733Scem } 392289733Scem 393289733Scem if (btoc((uint64_t)test->buffer_size * test->chain_depth * 394289733Scem test->transactions) > (physmem / 4)) { 395289776Scem ioat_test_log(0, "Sanity check failed -- test would " 396289733Scem "use more than 1/4 of phys mem.\n"); 397289733Scem test->status[IOAT_TEST_NO_MEMORY]++; 398289733Scem return; 399289733Scem } 400289733Scem 401289733Scem if ((uint64_t)test->transactions * test->chain_depth > (1<<16)) { 402289776Scem ioat_test_log(0, "Sanity check failed -- test would " 403289733Scem "use more than available IOAT ring space.\n"); 404289733Scem test->status[IOAT_TEST_NO_MEMORY]++; 405289733Scem return; 406289733Scem } 407289733Scem 408290021Scem if (test->testkind >= IOAT_NUM_TESTKINDS) { 409290021Scem ioat_test_log(0, "Invalid kind %u\n", 410290021Scem (unsigned)test->testkind); 411290021Scem test->status[IOAT_TEST_INVALID_INPUT]++; 412290021Scem return; 413290021Scem } 414290021Scem 415297746Scem dmaengine = ioat_get_dmaengine(test->channel_index, M_NOWAIT); 416287117Scem if (dmaengine == NULL) { 417289776Scem ioat_test_log(0, "Couldn't acquire dmaengine\n"); 418289733Scem test->status[IOAT_TEST_NO_DMA_ENGINE]++; 419287117Scem return; 420287117Scem } 421292229Scem ioat = to_ioat_softc(dmaengine); 422287117Scem 423290087Scem if (test->testkind == IOAT_TEST_FILL && 424292229Scem (ioat->capabilities & IOAT_DMACAP_BFILL) == 0) 425290087Scem { 426290087Scem ioat_test_log(0, 427290087Scem "Hardware doesn't support block fill, aborting test\n"); 428290087Scem test->status[IOAT_TEST_INVALID_INPUT]++; 429290087Scem goto out; 430290087Scem } 431290087Scem 432292229Scem if (test->coalesce_period > ioat->intrdelay_max) { 433292229Scem ioat_test_log(0, 434292229Scem "Hardware doesn't support intrdelay of %u us.\n", 435292229Scem (unsigned)test->coalesce_period); 436292229Scem test->status[IOAT_TEST_INVALID_INPUT]++; 437292229Scem goto out; 438292229Scem } 439292229Scem error = ioat_set_interrupt_coalesce(dmaengine, test->coalesce_period); 440292229Scem if (error == ENODEV && test->coalesce_period == 0) 441292229Scem error = 0; 442292229Scem if (error != 0) { 443292229Scem ioat_test_log(0, "ioat_set_interrupt_coalesce: %d\n", error); 444292229Scem test->status[IOAT_TEST_INVALID_INPUT]++; 445292229Scem goto out; 446292229Scem } 447292229Scem 448292229Scem if (test->zero_stats) 449292229Scem memset(&ioat->stats, 0, sizeof(ioat->stats)); 450292229Scem 451290129Scem if (test->testkind == IOAT_TEST_RAW_DMA) { 452290129Scem if (test->raw_is_virtual) { 453290129Scem test->raw_vtarget = (void *)test->raw_target; 454290129Scem test->raw_target = vtophys(test->raw_vtarget); 455290129Scem } else { 456290129Scem test->raw_vtarget = pmap_mapdev(test->raw_target, 457290129Scem test->buffer_size); 458290129Scem } 459290129Scem } 460290129Scem 461289733Scem index = g_thread_index++; 462289733Scem TAILQ_INIT(&test->free_q); 463289733Scem TAILQ_INIT(&test->pend_q); 464287117Scem 465289733Scem if (test->duration == 0) 466289776Scem ioat_test_log(1, "Thread %d: num_loops remaining: 0x%08x\n", 467289733Scem index, test->transactions); 468289733Scem else 469289776Scem ioat_test_log(1, "Thread %d: starting\n", index); 470287117Scem 471289733Scem rc = ioat_test_prealloc_memory(test, index); 472289733Scem if (rc != 0) { 473289776Scem ioat_test_log(0, "prealloc_memory: %d\n", rc); 474289907Scem goto out; 475289733Scem } 476289733Scem wmb(); 477287117Scem 478289733Scem test->too_late = false; 479289733Scem start = ticks; 480289733Scem end = start + (((sbintime_t)test->duration * hz) / 1000); 481289733Scem 482289733Scem for (loops = 0;; loops++) { 483289733Scem if (test->duration == 0 && loops >= test->transactions) 484289733Scem break; 485289733Scem else if (test->duration != 0 && time_after(ticks, end)) { 486289733Scem test->too_late = true; 487289733Scem break; 488287117Scem } 489287117Scem 490289733Scem ioat_test_submit_1_tx(test, dmaengine); 491289733Scem } 492287117Scem 493289776Scem ioat_test_log(1, "Test Elapsed: %d ticks (overrun %d), %d sec.\n", 494289733Scem ticks - start, ticks - end, (ticks - start) / hz); 495287117Scem 496289733Scem IT_LOCK(); 497289733Scem while (!TAILQ_EMPTY(&test->pend_q)) 498289733Scem msleep(&test->free_q, &ioat_test_lk, 0, "ioattestcompl", hz); 499289733Scem IT_UNLOCK(); 500287117Scem 501289776Scem ioat_test_log(1, "Test Elapsed2: %d ticks (overrun %d), %d sec.\n", 502289733Scem ticks - start, ticks - end, (ticks - start) / hz); 503287117Scem 504289733Scem ioat_test_release_memory(test); 505289907Scemout: 506290129Scem if (test->testkind == IOAT_TEST_RAW_DMA && !test->raw_is_virtual) 507290129Scem pmap_unmapdev((vm_offset_t)test->raw_vtarget, 508290129Scem test->buffer_size); 509289907Scem ioat_put_dmaengine(dmaengine); 510287117Scem} 511287117Scem 512287117Scemstatic int 513287117Scemioat_test_open(struct cdev *dev, int flags, int fmt, struct thread *td) 514287117Scem{ 515287117Scem 516287117Scem return (0); 517287117Scem} 518287117Scem 519287117Scemstatic int 520287117Scemioat_test_close(struct cdev *dev, int flags, int fmt, struct thread *td) 521287117Scem{ 522287117Scem 523287117Scem return (0); 524287117Scem} 525287117Scem 526287117Scemstatic int 527287117Scemioat_test_ioctl(struct cdev *dev, unsigned long cmd, caddr_t arg, int flag, 528287117Scem struct thread *td) 529287117Scem{ 530287117Scem 531287117Scem switch (cmd) { 532287117Scem case IOAT_DMATEST: 533287117Scem ioat_dma_test(arg); 534287117Scem break; 535287117Scem default: 536287117Scem return (EINVAL); 537287117Scem } 538287117Scem return (0); 539287117Scem} 540287117Scem 541287117Scemstatic struct cdevsw ioat_cdevsw = { 542287117Scem .d_version = D_VERSION, 543287117Scem .d_flags = 0, 544287117Scem .d_open = ioat_test_open, 545287117Scem .d_close = ioat_test_close, 546287117Scem .d_ioctl = ioat_test_ioctl, 547287117Scem .d_name = "ioat_test", 548287117Scem}; 549287117Scem 550287117Scemstatic int 551289760Scemenable_ioat_test(bool enable) 552289760Scem{ 553289760Scem 554289760Scem mtx_assert(&Giant, MA_OWNED); 555289760Scem 556289760Scem if (enable && g_ioat_cdev == NULL) { 557289760Scem g_ioat_cdev = make_dev(&ioat_cdevsw, 0, UID_ROOT, GID_WHEEL, 558289760Scem 0600, "ioat_test"); 559289760Scem } else if (!enable && g_ioat_cdev != NULL) { 560289760Scem destroy_dev(g_ioat_cdev); 561289760Scem g_ioat_cdev = NULL; 562289760Scem } 563289760Scem return (0); 564289760Scem} 565289760Scem 566289760Scemstatic int 567287117Scemsysctl_enable_ioat_test(SYSCTL_HANDLER_ARGS) 568287117Scem{ 569287117Scem int error, enabled; 570287117Scem 571287117Scem enabled = (g_ioat_cdev != NULL); 572287117Scem error = sysctl_handle_int(oidp, &enabled, 0, req); 573287117Scem if (error != 0 || req->newptr == NULL) 574287117Scem return (error); 575287117Scem 576289760Scem enable_ioat_test(enabled); 577287117Scem return (0); 578287117Scem} 579287117ScemSYSCTL_PROC(_hw_ioat, OID_AUTO, enable_ioat_test, CTLTYPE_INT | CTLFLAG_RW, 580287117Scem 0, 0, sysctl_enable_ioat_test, "I", 581287117Scem "Non-zero: Enable the /dev/ioat_test device"); 582289760Scem 583289760Scemvoid 584289760Scemioat_test_attach(void) 585289760Scem{ 586289760Scem char *val; 587289760Scem 588289760Scem val = kern_getenv("hw.ioat.enable_ioat_test"); 589289760Scem if (val != NULL && strcmp(val, "0") != 0) { 590289760Scem mtx_lock(&Giant); 591289760Scem enable_ioat_test(true); 592289760Scem mtx_unlock(&Giant); 593289760Scem } 594289760Scem freeenv(val); 595289760Scem} 596289760Scem 597289760Scemvoid 598289760Scemioat_test_detach(void) 599289760Scem{ 600289760Scem 601289760Scem mtx_lock(&Giant); 602289760Scem enable_ioat_test(false); 603289760Scem mtx_unlock(&Giant); 604289760Scem} 605289776Scem 606315070Savgstatic void 607289776Scem_ioat_test_log(int verbosity, const char *fmt, ...) 608289776Scem{ 609289776Scem va_list argp; 610289776Scem 611289776Scem if (verbosity > g_ioat_debug_level) 612289776Scem return; 613289776Scem 614289776Scem va_start(argp, fmt); 615289776Scem vprintf(fmt, argp); 616289776Scem va_end(argp); 617289776Scem} 618