| 1 | /* |
| 2 | * Copyright (c) 2004-07 Applied Micro Circuits Corporation. |
| 3 | * Copyright (c) 2004-05 Vinod Kashyap. |
| 4 | * Copyright (c) 2000 Michael Smith |
| 5 | * Copyright (c) 2000 BSDi |
| 6 | * All rights reserved. |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions |
| 10 | * are met: |
| 11 | * 1. Redistributions of source code must retain the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer. |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer in the |
| 15 | * documentation and/or other materials provided with the distribution. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 27 | * SUCH DAMAGE. |
| 28 | * |
| 29 | * $FreeBSD: src/sys/dev/twa/tw_osl_freebsd.c,v 1.18 2010/09/04 16:27:14 bz Exp $ |
| 30 | */ |
| 31 | |
| 32 | /* |
| 33 | * AMCC'S 3ware driver for 9000 series storage controllers. |
| 34 | * |
| 35 | * Author: Vinod Kashyap |
| 36 | * Modifications by: Adam Radford |
| 37 | * Modifications by: Manjunath Ranganathaiah |
| 38 | */ |
| 39 | |
| 40 | |
| 41 | /* |
| 42 | * FreeBSD specific functions not related to CAM, and other |
| 43 | * miscellaneous functions. |
| 44 | */ |
| 45 | |
| 46 | |
| 47 | #include <dev/raid/twa/tw_osl_includes.h> |
| 48 | #include <dev/raid/twa/tw_cl_fwif.h> |
| 49 | #include <dev/raid/twa/tw_cl_ioctl.h> |
| 50 | #include <dev/raid/twa/tw_osl_ioctl.h> |
| 51 | |
| 52 | #ifdef TW_OSL_DEBUG |
| 53 | TW_INT32 TW_DEBUG_LEVEL_FOR_OSL = TW_OSL_DEBUG; |
| 54 | TW_INT32 TW_OSL_DEBUG_LEVEL_FOR_CL = TW_OSL_DEBUG; |
| 55 | #endif /* TW_OSL_DEBUG */ |
| 56 | |
| 57 | MALLOC_DEFINE(TW_OSLI_MALLOC_CLASS, "twa_commands", "twa commands"); |
| 58 | |
| 59 | |
| 60 | static d_open_t twa_open; |
| 61 | static d_close_t twa_close; |
| 62 | static d_ioctl_t twa_ioctl; |
| 63 | |
| 64 | static struct dev_ops twa_ops = { |
| 65 | { "twa", 0, 0 }, |
| 66 | .d_open = twa_open, |
| 67 | .d_close = twa_close, |
| 68 | .d_ioctl = twa_ioctl, |
| 69 | }; |
| 70 | |
| 71 | static devclass_t twa_devclass; |
| 72 | |
| 73 | |
| 74 | /* |
| 75 | * Function name: twa_open |
| 76 | * Description: Called when the controller is opened. |
| 77 | * Simply marks the controller as open. |
| 78 | * |
| 79 | * Input: dev -- control device corresponding to the ctlr |
| 80 | * flags -- mode of open |
| 81 | * fmt -- device type (character/block etc.) |
| 82 | * proc -- current process |
| 83 | * Output: None |
| 84 | * Return value: 0 -- success |
| 85 | * non-zero-- failure |
| 86 | */ |
| 87 | static TW_INT32 |
| 88 | twa_open(struct dev_open_args *ap) |
| 89 | { |
| 90 | cdev_t dev = ap->a_head.a_dev; |
| 91 | struct twa_softc *sc = (struct twa_softc *)(dev->si_drv1); |
| 92 | |
| 93 | tw_osli_dbg_dprintf(5, sc, "entered"); |
| 94 | sc->open = TW_CL_TRUE; |
| 95 | return(0); |
| 96 | } |
| 97 | |
| 98 | |
| 99 | |
| 100 | /* |
| 101 | * Function name: twa_close |
| 102 | * Description: Called when the controller is closed. |
| 103 | * Simply marks the controller as not open. |
| 104 | * |
| 105 | * Input: dev -- control device corresponding to the ctlr |
| 106 | * flags -- mode of corresponding open |
| 107 | * fmt -- device type (character/block etc.) |
| 108 | * proc -- current process |
| 109 | * Output: None |
| 110 | * Return value: 0 -- success |
| 111 | * non-zero-- failure |
| 112 | */ |
| 113 | static TW_INT32 |
| 114 | twa_close(struct dev_close_args *ap) |
| 115 | { |
| 116 | cdev_t dev = ap->a_head.a_dev; |
| 117 | struct twa_softc *sc = (struct twa_softc *)(dev->si_drv1); |
| 118 | |
| 119 | tw_osli_dbg_dprintf(5, sc, "entered"); |
| 120 | sc->open = TW_CL_FALSE; |
| 121 | return(0); |
| 122 | } |
| 123 | |
| 124 | |
| 125 | |
| 126 | /* |
| 127 | * Function name: twa_ioctl |
| 128 | * Description: Called when an ioctl is posted to the controller. |
| 129 | * Handles any OS Layer specific cmds, passes the rest |
| 130 | * on to the Common Layer. |
| 131 | * |
| 132 | * Input: dev -- control device corresponding to the ctlr |
| 133 | * cmd -- ioctl cmd |
| 134 | * buf -- ptr to buffer in kernel memory, which is |
| 135 | * a copy of the input buffer in user-space |
| 136 | * flags -- mode of corresponding open |
| 137 | * proc -- current process |
| 138 | * Output: buf -- ptr to buffer in kernel memory, which will |
| 139 | * be copied to the output buffer in user-space |
| 140 | * Return value: 0 -- success |
| 141 | * non-zero-- failure |
| 142 | */ |
| 143 | static TW_INT32 |
| 144 | twa_ioctl(struct dev_ioctl_args *ap) |
| 145 | { |
| 146 | cdev_t dev = ap->a_head.a_dev; |
| 147 | u_long cmd = ap->a_cmd; |
| 148 | caddr_t buf = ap->a_data; |
| 149 | struct twa_softc *sc = (struct twa_softc *)(dev->si_drv1); |
| 150 | TW_INT32 error; |
| 151 | |
| 152 | tw_osli_dbg_dprintf(5, sc, "entered"); |
| 153 | |
| 154 | switch (cmd) { |
| 155 | case TW_OSL_IOCTL_FIRMWARE_PASS_THROUGH: |
| 156 | tw_osli_dbg_dprintf(6, sc, "ioctl: fw_passthru"); |
| 157 | error = tw_osli_fw_passthru(sc, (TW_INT8 *)buf); |
| 158 | break; |
| 159 | |
| 160 | case TW_OSL_IOCTL_SCAN_BUS: |
| 161 | /* Request CAM for a bus scan. */ |
| 162 | tw_osli_dbg_dprintf(6, sc, "ioctl: scan bus"); |
| 163 | error = tw_osli_request_bus_scan(sc); |
| 164 | break; |
| 165 | |
| 166 | default: |
| 167 | tw_osli_dbg_dprintf(6, sc, "ioctl: 0x%lx", cmd); |
| 168 | error = tw_cl_ioctl(&sc->ctlr_handle, cmd, buf); |
| 169 | break; |
| 170 | } |
| 171 | return(error); |
| 172 | } |
| 173 | |
| 174 | |
| 175 | |
| 176 | static TW_INT32 twa_probe(device_t dev); |
| 177 | static TW_INT32 twa_attach(device_t dev); |
| 178 | static TW_INT32 twa_detach(device_t dev); |
| 179 | static TW_INT32 twa_shutdown(device_t dev); |
| 180 | #if 0 /* XXX swildner */ |
| 181 | static TW_VOID twa_busdma_lock(TW_VOID *lock_arg, bus_dma_lock_op_t op); |
| 182 | #endif |
| 183 | static TW_VOID twa_pci_intr(TW_VOID *arg); |
| 184 | static TW_VOID twa_watchdog(TW_VOID *arg); |
| 185 | int twa_setup_intr(struct twa_softc *sc); |
| 186 | int twa_teardown_intr(struct twa_softc *sc); |
| 187 | |
| 188 | static TW_INT32 tw_osli_alloc_mem(struct twa_softc *sc); |
| 189 | static TW_VOID tw_osli_free_resources(struct twa_softc *sc); |
| 190 | |
| 191 | static TW_VOID twa_map_load_data_callback(TW_VOID *arg, |
| 192 | bus_dma_segment_t *segs, TW_INT32 nsegments, TW_INT32 error); |
| 193 | static TW_VOID twa_map_load_callback(TW_VOID *arg, |
| 194 | bus_dma_segment_t *segs, TW_INT32 nsegments, TW_INT32 error); |
| 195 | |
| 196 | |
| 197 | static device_method_t twa_methods[] = { |
| 198 | /* Device interface */ |
| 199 | DEVMETHOD(device_probe, twa_probe), |
| 200 | DEVMETHOD(device_attach, twa_attach), |
| 201 | DEVMETHOD(device_detach, twa_detach), |
| 202 | DEVMETHOD(device_shutdown, twa_shutdown), |
| 203 | |
| 204 | DEVMETHOD(bus_print_child, bus_generic_print_child), |
| 205 | DEVMETHOD(bus_driver_added, bus_generic_driver_added), |
| 206 | {0, 0} |
| 207 | }; |
| 208 | |
| 209 | static driver_t twa_pci_driver = { |
| 210 | "twa", |
| 211 | twa_methods, |
| 212 | sizeof(struct twa_softc) |
| 213 | }; |
| 214 | |
| 215 | DRIVER_MODULE(twa, pci, twa_pci_driver, twa_devclass, 0, 0); |
| 216 | MODULE_DEPEND(twa, cam, 1, 1, 1); |
| 217 | MODULE_DEPEND(twa, pci, 1, 1, 1); |
| 218 | |
| 219 | |
| 220 | /* |
| 221 | * Function name: twa_probe |
| 222 | * Description: Called at driver load time. Claims 9000 ctlrs. |
| 223 | * |
| 224 | * Input: dev -- bus device corresponding to the ctlr |
| 225 | * Output: None |
| 226 | * Return value: <= 0 -- success |
| 227 | * > 0 -- failure |
| 228 | */ |
| 229 | static TW_INT32 |
| 230 | twa_probe(device_t dev) |
| 231 | { |
| 232 | static TW_UINT8 first_ctlr = 1; |
| 233 | |
| 234 | tw_osli_dbg_printf(3, "entered"); |
| 235 | |
| 236 | if (tw_cl_ctlr_supported(pci_get_vendor(dev), pci_get_device(dev))) { |
| 237 | device_set_desc(dev, TW_OSLI_DEVICE_NAME); |
| 238 | /* Print the driver version only once. */ |
| 239 | if (first_ctlr) { |
| 240 | kprintf("3ware device driver for 9000 series storage " |
| 241 | "controllers, version: %s\n", |
| 242 | TW_OSL_DRIVER_VERSION_STRING); |
| 243 | first_ctlr = 0; |
| 244 | } |
| 245 | return(0); |
| 246 | } |
| 247 | return(ENXIO); |
| 248 | } |
| 249 | |
| 250 | int twa_setup_intr(struct twa_softc *sc) |
| 251 | { |
| 252 | int error = 0; |
| 253 | |
| 254 | if (!(sc->intr_handle) && (sc->irq_res)) { |
| 255 | error = bus_setup_intr(sc->bus_dev, sc->irq_res, |
| 256 | 0, |
| 257 | twa_pci_intr, |
| 258 | sc, &sc->intr_handle, NULL); |
| 259 | } |
| 260 | return( error ); |
| 261 | } |
| 262 | |
| 263 | |
| 264 | int twa_teardown_intr(struct twa_softc *sc) |
| 265 | { |
| 266 | int error = 0; |
| 267 | |
| 268 | if ((sc->intr_handle) && (sc->irq_res)) { |
| 269 | error = bus_teardown_intr(sc->bus_dev, |
| 270 | sc->irq_res, sc->intr_handle); |
| 271 | sc->intr_handle = NULL; |
| 272 | } |
| 273 | return( error ); |
| 274 | } |
| 275 | |
| 276 | |
| 277 | |
| 278 | /* |
| 279 | * Function name: twa_attach |
| 280 | * Description: Allocates pci resources; updates sc; adds a node to the |
| 281 | * sysctl tree to expose the driver version; makes calls |
| 282 | * (to the Common Layer) to initialize ctlr, and to |
| 283 | * attach to CAM. |
| 284 | * |
| 285 | * Input: dev -- bus device corresponding to the ctlr |
| 286 | * Output: None |
| 287 | * Return value: 0 -- success |
| 288 | * non-zero-- failure |
| 289 | */ |
| 290 | static TW_INT32 |
| 291 | twa_attach(device_t dev) |
| 292 | { |
| 293 | struct twa_softc *sc = device_get_softc(dev); |
| 294 | TW_UINT32 command; |
| 295 | TW_INT32 bar_num; |
| 296 | TW_INT32 bar0_offset; |
| 297 | TW_INT32 bar_size; |
| 298 | TW_INT32 error; |
| 299 | |
| 300 | tw_osli_dbg_dprintf(3, sc, "entered"); |
| 301 | |
| 302 | sc->ctlr_handle.osl_ctlr_ctxt = sc; |
| 303 | |
| 304 | /* Initialize the softc structure. */ |
| 305 | sc->bus_dev = dev; |
| 306 | sc->device_id = pci_get_device(dev); |
| 307 | |
| 308 | /* Initialize the mutexes right here. */ |
| 309 | sc->io_lock = &(sc->io_lock_handle); |
| 310 | spin_init(sc->io_lock); |
| 311 | sc->q_lock = &(sc->q_lock_handle); |
| 312 | spin_init(sc->q_lock); |
| 313 | sc->sim_lock = &(sc->sim_lock_handle); |
| 314 | lockinit(sc->sim_lock, "tw_osl_sim_lock", 0, LK_CANRECURSE); |
| 315 | |
| 316 | sysctl_ctx_init(&sc->sysctl_ctxt); |
| 317 | sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctxt, |
| 318 | SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, |
| 319 | device_get_nameunit(dev), CTLFLAG_RD, 0, ""); |
| 320 | if (sc->sysctl_tree == NULL) { |
| 321 | tw_osli_printf(sc, "error = %d", |
| 322 | TW_CL_SEVERITY_ERROR_STRING, |
| 323 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 324 | 0x2000, |
| 325 | "Cannot add sysctl tree node", |
| 326 | ENXIO); |
| 327 | return(ENXIO); |
| 328 | } |
| 329 | SYSCTL_ADD_STRING(&sc->sysctl_ctxt, SYSCTL_CHILDREN(sc->sysctl_tree), |
| 330 | OID_AUTO, "driver_version", CTLFLAG_RD, |
| 331 | TW_OSL_DRIVER_VERSION_STRING, 0, "TWA driver version"); |
| 332 | |
| 333 | /* Make sure we are going to be able to talk to this board. */ |
| 334 | command = pci_read_config(dev, PCIR_COMMAND, 2); |
| 335 | if ((command & PCIM_CMD_PORTEN) == 0) { |
| 336 | tw_osli_printf(sc, "error = %d", |
| 337 | TW_CL_SEVERITY_ERROR_STRING, |
| 338 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 339 | 0x2001, |
| 340 | "Register window not available", |
| 341 | ENXIO); |
| 342 | tw_osli_free_resources(sc); |
| 343 | return(ENXIO); |
| 344 | } |
| 345 | |
| 346 | /* Force the busmaster enable bit on, in case the BIOS forgot. */ |
| 347 | command |= PCIM_CMD_BUSMASTEREN; |
| 348 | pci_write_config(dev, PCIR_COMMAND, command, 2); |
| 349 | |
| 350 | /* Allocate the PCI register window. */ |
| 351 | if ((error = tw_cl_get_pci_bar_info(sc->device_id, TW_CL_BAR_TYPE_MEM, |
| 352 | &bar_num, &bar0_offset, &bar_size))) { |
| 353 | tw_osli_printf(sc, "error = %d", |
| 354 | TW_CL_SEVERITY_ERROR_STRING, |
| 355 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 356 | 0x201F, |
| 357 | "Can't get PCI BAR info", |
| 358 | error); |
| 359 | tw_osli_free_resources(sc); |
| 360 | return(error); |
| 361 | } |
| 362 | sc->reg_res_id = PCIR_BARS + bar0_offset; |
| 363 | if ((sc->reg_res = bus_alloc_resource(dev, SYS_RES_MEMORY, |
| 364 | &(sc->reg_res_id), 0, ~0, 1, RF_ACTIVE)) |
| 365 | == NULL) { |
| 366 | tw_osli_printf(sc, "error = %d", |
| 367 | TW_CL_SEVERITY_ERROR_STRING, |
| 368 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 369 | 0x2002, |
| 370 | "Can't allocate register window", |
| 371 | ENXIO); |
| 372 | tw_osli_free_resources(sc); |
| 373 | return(ENXIO); |
| 374 | } |
| 375 | sc->bus_tag = rman_get_bustag(sc->reg_res); |
| 376 | sc->bus_handle = rman_get_bushandle(sc->reg_res); |
| 377 | |
| 378 | /* Allocate and register our interrupt. */ |
| 379 | sc->irq_res_id = 0; |
| 380 | if ((sc->irq_res = bus_alloc_resource(sc->bus_dev, SYS_RES_IRQ, |
| 381 | &(sc->irq_res_id), 0, ~0, 1, |
| 382 | RF_SHAREABLE | RF_ACTIVE)) == NULL) { |
| 383 | tw_osli_printf(sc, "error = %d", |
| 384 | TW_CL_SEVERITY_ERROR_STRING, |
| 385 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 386 | 0x2003, |
| 387 | "Can't allocate interrupt", |
| 388 | ENXIO); |
| 389 | tw_osli_free_resources(sc); |
| 390 | return(ENXIO); |
| 391 | } |
| 392 | if ((error = twa_setup_intr(sc))) { |
| 393 | tw_osli_printf(sc, "error = %d", |
| 394 | TW_CL_SEVERITY_ERROR_STRING, |
| 395 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 396 | 0x2004, |
| 397 | "Can't set up interrupt", |
| 398 | error); |
| 399 | tw_osli_free_resources(sc); |
| 400 | return(error); |
| 401 | } |
| 402 | |
| 403 | if ((error = tw_osli_alloc_mem(sc))) { |
| 404 | tw_osli_printf(sc, "error = %d", |
| 405 | TW_CL_SEVERITY_ERROR_STRING, |
| 406 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 407 | 0x2005, |
| 408 | "Memory allocation failure", |
| 409 | error); |
| 410 | tw_osli_free_resources(sc); |
| 411 | return(error); |
| 412 | } |
| 413 | |
| 414 | /* Initialize the Common Layer for this controller. */ |
| 415 | if ((error = tw_cl_init_ctlr(&sc->ctlr_handle, sc->flags, sc->device_id, |
| 416 | TW_OSLI_MAX_NUM_REQUESTS, TW_OSLI_MAX_NUM_AENS, |
| 417 | sc->non_dma_mem, sc->dma_mem, |
| 418 | sc->dma_mem_phys |
| 419 | ))) { |
| 420 | tw_osli_printf(sc, "error = %d", |
| 421 | TW_CL_SEVERITY_ERROR_STRING, |
| 422 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 423 | 0x2006, |
| 424 | "Failed to initialize Common Layer/controller", |
| 425 | error); |
| 426 | tw_osli_free_resources(sc); |
| 427 | return(error); |
| 428 | } |
| 429 | |
| 430 | /* Create the control device. */ |
| 431 | sc->ctrl_dev = make_dev(&twa_ops, device_get_unit(sc->bus_dev), |
| 432 | UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR, |
| 433 | "twa%d", device_get_unit(sc->bus_dev)); |
| 434 | sc->ctrl_dev->si_drv1 = sc; |
| 435 | |
| 436 | if ((error = tw_osli_cam_attach(sc))) { |
| 437 | tw_osli_free_resources(sc); |
| 438 | tw_osli_printf(sc, "error = %d", |
| 439 | TW_CL_SEVERITY_ERROR_STRING, |
| 440 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 441 | 0x2007, |
| 442 | "Failed to initialize CAM", |
| 443 | error); |
| 444 | return(error); |
| 445 | } |
| 446 | |
| 447 | sc->watchdog_index = 0; |
| 448 | callout_init(&(sc->watchdog_callout[0])); |
| 449 | callout_init(&(sc->watchdog_callout[1])); |
| 450 | callout_reset(&(sc->watchdog_callout[0]), 5*hz, twa_watchdog, &sc->ctlr_handle); |
| 451 | |
| 452 | return(0); |
| 453 | } |
| 454 | |
| 455 | |
| 456 | static TW_VOID |
| 457 | twa_watchdog(TW_VOID *arg) |
| 458 | { |
| 459 | struct tw_cl_ctlr_handle *ctlr_handle = |
| 460 | (struct tw_cl_ctlr_handle *)arg; |
| 461 | struct twa_softc *sc = ctlr_handle->osl_ctlr_ctxt; |
| 462 | int i; |
| 463 | int i_need_a_reset = 0; |
| 464 | int driver_is_active = 0; |
| 465 | TW_UINT64 current_time; |
| 466 | struct tw_osli_req_context *my_req; |
| 467 | |
| 468 | |
| 469 | //============================================================================== |
| 470 | current_time = (TW_UINT64) (tw_osl_get_local_time()); |
| 471 | |
| 472 | for (i = 0; i < TW_OSLI_MAX_NUM_REQUESTS; i++) { |
| 473 | my_req = &(sc->req_ctx_buf[i]); |
| 474 | |
| 475 | if ((my_req->state == TW_OSLI_REQ_STATE_BUSY) && |
| 476 | (my_req->deadline) && |
| 477 | (my_req->deadline < current_time)) { |
| 478 | tw_cl_set_reset_needed(ctlr_handle); |
| 479 | #ifdef TW_OSL_DEBUG |
| 480 | device_printf((sc)->bus_dev, "Request %d timed out! d = %llu, c = %llu\n", i, my_req->deadline, current_time); |
| 481 | #else /* TW_OSL_DEBUG */ |
| 482 | device_printf((sc)->bus_dev, "Request %d timed out!\n", i); |
| 483 | #endif /* TW_OSL_DEBUG */ |
| 484 | break; |
| 485 | } |
| 486 | } |
| 487 | //============================================================================== |
| 488 | |
| 489 | i_need_a_reset = tw_cl_is_reset_needed(ctlr_handle); |
| 490 | |
| 491 | i = (int) ((sc->watchdog_index++) & 1); |
| 492 | |
| 493 | driver_is_active = tw_cl_is_active(ctlr_handle); |
| 494 | |
| 495 | if (i_need_a_reset) { |
| 496 | #ifdef TW_OSL_DEBUG |
| 497 | device_printf((sc)->bus_dev, "Watchdog rescheduled in 70 seconds\n"); |
| 498 | #endif /* TW_OSL_DEBUG */ |
| 499 | callout_reset(&(sc->watchdog_callout[i]), 70*hz, twa_watchdog, &sc->ctlr_handle); |
| 500 | tw_cl_reset_ctlr(ctlr_handle); |
| 501 | #ifdef TW_OSL_DEBUG |
| 502 | device_printf((sc)->bus_dev, "Watchdog reset completed!\n"); |
| 503 | #endif /* TW_OSL_DEBUG */ |
| 504 | } else if (driver_is_active) { |
| 505 | callout_reset(&(sc->watchdog_callout[i]), 5*hz, twa_watchdog, &sc->ctlr_handle); |
| 506 | } |
| 507 | #ifdef TW_OSL_DEBUG |
| 508 | if (i_need_a_reset) |
| 509 | device_printf((sc)->bus_dev, "i_need_a_reset = %d, " |
| 510 | "driver_is_active = %d\n", |
| 511 | i_need_a_reset, driver_is_active); |
| 512 | #endif /* TW_OSL_DEBUG */ |
| 513 | } |
| 514 | |
| 515 | |
| 516 | /* |
| 517 | * Function name: tw_osli_alloc_mem |
| 518 | * Description: Allocates memory needed both by CL and OSL. |
| 519 | * |
| 520 | * Input: sc -- OSL internal controller context |
| 521 | * Output: None |
| 522 | * Return value: 0 -- success |
| 523 | * non-zero-- failure |
| 524 | */ |
| 525 | static TW_INT32 |
| 526 | tw_osli_alloc_mem(struct twa_softc *sc) |
| 527 | { |
| 528 | struct tw_osli_req_context *req; |
| 529 | TW_UINT32 max_sg_elements; |
| 530 | TW_UINT32 non_dma_mem_size; |
| 531 | TW_UINT32 dma_mem_size; |
| 532 | TW_INT32 error; |
| 533 | TW_INT32 i; |
| 534 | |
| 535 | tw_osli_dbg_dprintf(3, sc, "entered"); |
| 536 | |
| 537 | sc->flags |= (sizeof(bus_addr_t) == 8) ? TW_CL_64BIT_ADDRESSES : 0; |
| 538 | sc->flags |= (sizeof(bus_size_t) == 8) ? TW_CL_64BIT_SG_LENGTH : 0; |
| 539 | |
| 540 | max_sg_elements = (sizeof(bus_addr_t) == 8) ? |
| 541 | TW_CL_MAX_64BIT_SG_ELEMENTS : TW_CL_MAX_32BIT_SG_ELEMENTS; |
| 542 | |
| 543 | if ((error = tw_cl_get_mem_requirements(&sc->ctlr_handle, sc->flags, |
| 544 | sc->device_id, TW_OSLI_MAX_NUM_REQUESTS, TW_OSLI_MAX_NUM_AENS, |
| 545 | &(sc->alignment), &(sc->sg_size_factor), |
| 546 | &non_dma_mem_size, &dma_mem_size |
| 547 | ))) { |
| 548 | tw_osli_printf(sc, "error = %d", |
| 549 | TW_CL_SEVERITY_ERROR_STRING, |
| 550 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 551 | 0x2008, |
| 552 | "Can't get Common Layer's memory requirements", |
| 553 | error); |
| 554 | return(error); |
| 555 | } |
| 556 | |
| 557 | if ((sc->non_dma_mem = kmalloc(non_dma_mem_size, TW_OSLI_MALLOC_CLASS, |
| 558 | M_WAITOK)) == NULL) { |
| 559 | tw_osli_printf(sc, "error = %d", |
| 560 | TW_CL_SEVERITY_ERROR_STRING, |
| 561 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 562 | 0x2009, |
| 563 | "Can't allocate non-dma memory", |
| 564 | ENOMEM); |
| 565 | return(ENOMEM); |
| 566 | } |
| 567 | |
| 568 | /* Create the parent dma tag. */ |
| 569 | if (bus_dma_tag_create(NULL, /* parent */ |
| 570 | sc->alignment, /* alignment */ |
| 571 | TW_OSLI_DMA_BOUNDARY, /* boundary */ |
| 572 | BUS_SPACE_MAXADDR, /* lowaddr */ |
| 573 | BUS_SPACE_MAXADDR, /* highaddr */ |
| 574 | NULL, NULL, /* filter, filterarg */ |
| 575 | TW_CL_MAX_IO_SIZE, /* maxsize */ |
| 576 | max_sg_elements, /* nsegments */ |
| 577 | TW_CL_MAX_IO_SIZE, /* maxsegsize */ |
| 578 | 0, /* flags */ |
| 579 | &sc->parent_tag /* tag */)) { |
| 580 | tw_osli_printf(sc, "error = %d", |
| 581 | TW_CL_SEVERITY_ERROR_STRING, |
| 582 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 583 | 0x200A, |
| 584 | "Can't allocate parent DMA tag", |
| 585 | ENOMEM); |
| 586 | return(ENOMEM); |
| 587 | } |
| 588 | |
| 589 | /* Create a dma tag for Common Layer's DMA'able memory (dma_mem). */ |
| 590 | if (bus_dma_tag_create(sc->parent_tag, /* parent */ |
| 591 | sc->alignment, /* alignment */ |
| 592 | 0, /* boundary */ |
| 593 | BUS_SPACE_MAXADDR, /* lowaddr */ |
| 594 | BUS_SPACE_MAXADDR, /* highaddr */ |
| 595 | NULL, NULL, /* filter, filterarg */ |
| 596 | dma_mem_size, /* maxsize */ |
| 597 | 1, /* nsegments */ |
| 598 | BUS_SPACE_MAXSIZE, /* maxsegsize */ |
| 599 | 0, /* flags */ |
| 600 | &sc->cmd_tag /* tag */)) { |
| 601 | tw_osli_printf(sc, "error = %d", |
| 602 | TW_CL_SEVERITY_ERROR_STRING, |
| 603 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 604 | 0x200B, |
| 605 | "Can't allocate DMA tag for Common Layer's " |
| 606 | "DMA'able memory", |
| 607 | ENOMEM); |
| 608 | return(ENOMEM); |
| 609 | } |
| 610 | |
| 611 | if (bus_dmamem_alloc(sc->cmd_tag, &sc->dma_mem, |
| 612 | BUS_DMA_NOWAIT, &sc->cmd_map)) { |
| 613 | /* Try a second time. */ |
| 614 | if (bus_dmamem_alloc(sc->cmd_tag, &sc->dma_mem, |
| 615 | BUS_DMA_NOWAIT, &sc->cmd_map)) { |
| 616 | tw_osli_printf(sc, "error = %d", |
| 617 | TW_CL_SEVERITY_ERROR_STRING, |
| 618 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 619 | 0x200C, |
| 620 | "Can't allocate DMA'able memory for the" |
| 621 | "Common Layer", |
| 622 | ENOMEM); |
| 623 | return(ENOMEM); |
| 624 | } |
| 625 | } |
| 626 | |
| 627 | bus_dmamap_load(sc->cmd_tag, sc->cmd_map, sc->dma_mem, |
| 628 | dma_mem_size, twa_map_load_callback, |
| 629 | &sc->dma_mem_phys, 0); |
| 630 | |
| 631 | /* |
| 632 | * Create a dma tag for data buffers; size will be the maximum |
| 633 | * possible I/O size (128kB). |
| 634 | */ |
| 635 | if (bus_dma_tag_create(sc->parent_tag, /* parent */ |
| 636 | sc->alignment, /* alignment */ |
| 637 | 0, /* boundary */ |
| 638 | BUS_SPACE_MAXADDR, /* lowaddr */ |
| 639 | BUS_SPACE_MAXADDR, /* highaddr */ |
| 640 | NULL, NULL, /* filter, filterarg */ |
| 641 | TW_CL_MAX_IO_SIZE, /* maxsize */ |
| 642 | max_sg_elements, /* nsegments */ |
| 643 | TW_CL_MAX_IO_SIZE, /* maxsegsize */ |
| 644 | BUS_DMA_ALLOCNOW, /* flags */ |
| 645 | #if 0 /* XXX swildner */ |
| 646 | twa_busdma_lock, /* lockfunc */ |
| 647 | sc->io_lock, /* lockfuncarg */ |
| 648 | #endif |
| 649 | &sc->dma_tag /* tag */)) { |
| 650 | tw_osli_printf(sc, "error = %d", |
| 651 | TW_CL_SEVERITY_ERROR_STRING, |
| 652 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 653 | 0x200F, |
| 654 | "Can't allocate DMA tag for data buffers", |
| 655 | ENOMEM); |
| 656 | return(ENOMEM); |
| 657 | } |
| 658 | |
| 659 | /* |
| 660 | * Create a dma tag for ioctl data buffers; size will be the maximum |
| 661 | * possible I/O size (128kB). |
| 662 | */ |
| 663 | if (bus_dma_tag_create(sc->parent_tag, /* parent */ |
| 664 | sc->alignment, /* alignment */ |
| 665 | 0, /* boundary */ |
| 666 | BUS_SPACE_MAXADDR, /* lowaddr */ |
| 667 | BUS_SPACE_MAXADDR, /* highaddr */ |
| 668 | NULL, NULL, /* filter, filterarg */ |
| 669 | TW_CL_MAX_IO_SIZE, /* maxsize */ |
| 670 | max_sg_elements, /* nsegments */ |
| 671 | TW_CL_MAX_IO_SIZE, /* maxsegsize */ |
| 672 | BUS_DMA_ALLOCNOW, /* flags */ |
| 673 | #if 0 /* XXX swildner */ |
| 674 | twa_busdma_lock, /* lockfunc */ |
| 675 | sc->io_lock, /* lockfuncarg */ |
| 676 | #endif |
| 677 | &sc->ioctl_tag /* tag */)) { |
| 678 | tw_osli_printf(sc, "error = %d", |
| 679 | TW_CL_SEVERITY_ERROR_STRING, |
| 680 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 681 | 0x2010, |
| 682 | "Can't allocate DMA tag for ioctl data buffers", |
| 683 | ENOMEM); |
| 684 | return(ENOMEM); |
| 685 | } |
| 686 | |
| 687 | /* Create just one map for all ioctl request data buffers. */ |
| 688 | if (bus_dmamap_create(sc->ioctl_tag, 0, &sc->ioctl_map)) { |
| 689 | tw_osli_printf(sc, "error = %d", |
| 690 | TW_CL_SEVERITY_ERROR_STRING, |
| 691 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 692 | 0x2011, |
| 693 | "Can't create ioctl map", |
| 694 | ENOMEM); |
| 695 | return(ENOMEM); |
| 696 | } |
| 697 | |
| 698 | |
| 699 | /* Initialize request queues. */ |
| 700 | tw_osli_req_q_init(sc, TW_OSLI_FREE_Q); |
| 701 | tw_osli_req_q_init(sc, TW_OSLI_BUSY_Q); |
| 702 | |
| 703 | if ((sc->req_ctx_buf = (struct tw_osli_req_context *) |
| 704 | kmalloc((sizeof(struct tw_osli_req_context) * |
| 705 | TW_OSLI_MAX_NUM_REQUESTS), |
| 706 | TW_OSLI_MALLOC_CLASS, M_WAITOK)) == NULL) { |
| 707 | tw_osli_printf(sc, "error = %d", |
| 708 | TW_CL_SEVERITY_ERROR_STRING, |
| 709 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 710 | 0x2012, |
| 711 | "Failed to allocate request packets", |
| 712 | ENOMEM); |
| 713 | return(ENOMEM); |
| 714 | } |
| 715 | bzero(sc->req_ctx_buf, |
| 716 | sizeof(struct tw_osli_req_context) * TW_OSLI_MAX_NUM_REQUESTS); |
| 717 | |
| 718 | for (i = 0; i < TW_OSLI_MAX_NUM_REQUESTS; i++) { |
| 719 | req = &(sc->req_ctx_buf[i]); |
| 720 | req->ctlr = sc; |
| 721 | if (bus_dmamap_create(sc->dma_tag, 0, &req->dma_map)) { |
| 722 | tw_osli_printf(sc, "request # = %d, error = %d", |
| 723 | TW_CL_SEVERITY_ERROR_STRING, |
| 724 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 725 | 0x2013, |
| 726 | "Can't create dma map", |
| 727 | i, ENOMEM); |
| 728 | return(ENOMEM); |
| 729 | } |
| 730 | |
| 731 | /* Initialize the ioctl wakeup/ timeout mutex */ |
| 732 | req->ioctl_wake_timeout_lock = &(req->ioctl_wake_timeout_lock_handle); |
| 733 | lockinit(req->ioctl_wake_timeout_lock, "tw_ioctl_wake_timeout_lock", 0, 0); |
| 734 | |
| 735 | /* Insert request into the free queue. */ |
| 736 | tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); |
| 737 | } |
| 738 | |
| 739 | return(0); |
| 740 | } |
| 741 | |
| 742 | |
| 743 | |
| 744 | /* |
| 745 | * Function name: tw_osli_free_resources |
| 746 | * Description: Performs clean-up at the time of going down. |
| 747 | * |
| 748 | * Input: sc -- ptr to OSL internal ctlr context |
| 749 | * Output: None |
| 750 | * Return value: None |
| 751 | */ |
| 752 | static TW_VOID |
| 753 | tw_osli_free_resources(struct twa_softc *sc) |
| 754 | { |
| 755 | struct tw_osli_req_context *req; |
| 756 | TW_INT32 error = 0; |
| 757 | |
| 758 | tw_osli_dbg_dprintf(3, sc, "entered"); |
| 759 | |
| 760 | /* Detach from CAM */ |
| 761 | tw_osli_cam_detach(sc); |
| 762 | |
| 763 | if (sc->req_ctx_buf) |
| 764 | while ((req = tw_osli_req_q_remove_head(sc, TW_OSLI_FREE_Q)) != |
| 765 | NULL) { |
| 766 | lockuninit(req->ioctl_wake_timeout_lock); |
| 767 | |
| 768 | if ((error = bus_dmamap_destroy(sc->dma_tag, |
| 769 | req->dma_map))) |
| 770 | tw_osli_dbg_dprintf(1, sc, |
| 771 | "dmamap_destroy(dma) returned %d", |
| 772 | error); |
| 773 | } |
| 774 | |
| 775 | if ((sc->ioctl_tag) && (sc->ioctl_map)) |
| 776 | if ((error = bus_dmamap_destroy(sc->ioctl_tag, sc->ioctl_map))) |
| 777 | tw_osli_dbg_dprintf(1, sc, |
| 778 | "dmamap_destroy(ioctl) returned %d", error); |
| 779 | |
| 780 | /* Free all memory allocated so far. */ |
| 781 | if (sc->req_ctx_buf) |
| 782 | kfree(sc->req_ctx_buf, TW_OSLI_MALLOC_CLASS); |
| 783 | |
| 784 | if (sc->non_dma_mem) |
| 785 | kfree(sc->non_dma_mem, TW_OSLI_MALLOC_CLASS); |
| 786 | |
| 787 | if (sc->dma_mem) { |
| 788 | bus_dmamap_unload(sc->cmd_tag, sc->cmd_map); |
| 789 | bus_dmamem_free(sc->cmd_tag, sc->dma_mem, |
| 790 | sc->cmd_map); |
| 791 | } |
| 792 | if (sc->cmd_tag) |
| 793 | if ((error = bus_dma_tag_destroy(sc->cmd_tag))) |
| 794 | tw_osli_dbg_dprintf(1, sc, |
| 795 | "dma_tag_destroy(cmd) returned %d", error); |
| 796 | |
| 797 | if (sc->dma_tag) |
| 798 | if ((error = bus_dma_tag_destroy(sc->dma_tag))) |
| 799 | tw_osli_dbg_dprintf(1, sc, |
| 800 | "dma_tag_destroy(dma) returned %d", error); |
| 801 | |
| 802 | if (sc->ioctl_tag) |
| 803 | if ((error = bus_dma_tag_destroy(sc->ioctl_tag))) |
| 804 | tw_osli_dbg_dprintf(1, sc, |
| 805 | "dma_tag_destroy(ioctl) returned %d", error); |
| 806 | |
| 807 | if (sc->parent_tag) |
| 808 | if ((error = bus_dma_tag_destroy(sc->parent_tag))) |
| 809 | tw_osli_dbg_dprintf(1, sc, |
| 810 | "dma_tag_destroy(parent) returned %d", error); |
| 811 | |
| 812 | |
| 813 | /* Disconnect the interrupt handler. */ |
| 814 | if ((error = twa_teardown_intr(sc))) |
| 815 | tw_osli_dbg_dprintf(1, sc, |
| 816 | "teardown_intr returned %d", error); |
| 817 | |
| 818 | if (sc->irq_res != NULL) |
| 819 | if ((error = bus_release_resource(sc->bus_dev, |
| 820 | SYS_RES_IRQ, sc->irq_res_id, sc->irq_res))) |
| 821 | tw_osli_dbg_dprintf(1, sc, |
| 822 | "release_resource(irq) returned %d", error); |
| 823 | |
| 824 | |
| 825 | /* Release the register window mapping. */ |
| 826 | if (sc->reg_res != NULL) |
| 827 | if ((error = bus_release_resource(sc->bus_dev, |
| 828 | SYS_RES_MEMORY, sc->reg_res_id, sc->reg_res))) |
| 829 | tw_osli_dbg_dprintf(1, sc, |
| 830 | "release_resource(io) returned %d", error); |
| 831 | |
| 832 | dev_ops_remove_minor(&twa_ops, device_get_unit(sc->bus_dev)); |
| 833 | |
| 834 | /* Destroy the control device. */ |
| 835 | if (sc->ctrl_dev != (struct cdev *)NULL) |
| 836 | destroy_dev(sc->ctrl_dev); |
| 837 | |
| 838 | if ((error = sysctl_ctx_free(&sc->sysctl_ctxt))) |
| 839 | tw_osli_dbg_dprintf(1, sc, |
| 840 | "sysctl_ctx_free returned %d", error); |
| 841 | |
| 842 | } |
| 843 | |
| 844 | |
| 845 | |
| 846 | /* |
| 847 | * Function name: twa_detach |
| 848 | * Description: Called when the controller is being detached from |
| 849 | * the pci bus. |
| 850 | * |
| 851 | * Input: dev -- bus device corresponding to the ctlr |
| 852 | * Output: None |
| 853 | * Return value: 0 -- success |
| 854 | * non-zero-- failure |
| 855 | */ |
| 856 | static TW_INT32 |
| 857 | twa_detach(device_t dev) |
| 858 | { |
| 859 | struct twa_softc *sc = device_get_softc(dev); |
| 860 | TW_INT32 error; |
| 861 | |
| 862 | tw_osli_dbg_dprintf(3, sc, "entered"); |
| 863 | |
| 864 | error = EBUSY; |
| 865 | if (sc->open) { |
| 866 | tw_osli_printf(sc, "error = %d", |
| 867 | TW_CL_SEVERITY_ERROR_STRING, |
| 868 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 869 | 0x2014, |
| 870 | "Device open", |
| 871 | error); |
| 872 | goto out; |
| 873 | } |
| 874 | |
| 875 | /* Shut the controller down. */ |
| 876 | if ((error = twa_shutdown(dev))) |
| 877 | goto out; |
| 878 | |
| 879 | /* Free all resources associated with this controller. */ |
| 880 | tw_osli_free_resources(sc); |
| 881 | error = 0; |
| 882 | |
| 883 | out: |
| 884 | return(error); |
| 885 | } |
| 886 | |
| 887 | |
| 888 | |
| 889 | /* |
| 890 | * Function name: twa_shutdown |
| 891 | * Description: Called at unload/shutdown time. Lets the controller |
| 892 | * know that we are going down. |
| 893 | * |
| 894 | * Input: dev -- bus device corresponding to the ctlr |
| 895 | * Output: None |
| 896 | * Return value: 0 -- success |
| 897 | * non-zero-- failure |
| 898 | */ |
| 899 | static TW_INT32 |
| 900 | twa_shutdown(device_t dev) |
| 901 | { |
| 902 | struct twa_softc *sc = device_get_softc(dev); |
| 903 | TW_INT32 error = 0; |
| 904 | |
| 905 | tw_osli_dbg_dprintf(3, sc, "entered"); |
| 906 | |
| 907 | /* Disconnect interrupts. */ |
| 908 | error = twa_teardown_intr(sc); |
| 909 | |
| 910 | #if 0 /* XXX swildner */ |
| 911 | /* Stop watchdog task. */ |
| 912 | callout_drain(&(sc->watchdog_callout[0])); |
| 913 | callout_drain(&(sc->watchdog_callout[1])); |
| 914 | #endif |
| 915 | |
| 916 | /* Disconnect from the controller. */ |
| 917 | if ((error = tw_cl_shutdown_ctlr(&(sc->ctlr_handle), 0))) { |
| 918 | tw_osli_printf(sc, "error = %d", |
| 919 | TW_CL_SEVERITY_ERROR_STRING, |
| 920 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 921 | 0x2015, |
| 922 | "Failed to shutdown Common Layer/controller", |
| 923 | error); |
| 924 | } |
| 925 | return(error); |
| 926 | } |
| 927 | |
| 928 | |
| 929 | |
| 930 | #if 0 /* XXX swildner */ |
| 931 | /* |
| 932 | * Function name: twa_busdma_lock |
| 933 | * Description: Function to provide synchronization during busdma_swi. |
| 934 | * |
| 935 | * Input: lock_arg -- lock mutex sent as argument |
| 936 | * op -- operation (lock/unlock) expected of the function |
| 937 | * Output: None |
| 938 | * Return value: None |
| 939 | */ |
| 940 | TW_VOID |
| 941 | twa_busdma_lock(TW_VOID *lock_arg, bus_dma_lock_op_t op) |
| 942 | { |
| 943 | struct spinlock *lock; |
| 944 | |
| 945 | lock = (struct spinlock *)lock_arg; |
| 946 | switch (op) { |
| 947 | case BUS_DMA_LOCK: |
| 948 | spin_lock(lock); |
| 949 | break; |
| 950 | |
| 951 | case BUS_DMA_UNLOCK: |
| 952 | spin_unlock(lock); |
| 953 | break; |
| 954 | |
| 955 | default: |
| 956 | panic("Unknown operation 0x%x for twa_busdma_lock!", op); |
| 957 | } |
| 958 | } |
| 959 | #endif |
| 960 | |
| 961 | |
| 962 | /* |
| 963 | * Function name: twa_pci_intr |
| 964 | * Description: Interrupt handler. Wrapper for twa_interrupt. |
| 965 | * |
| 966 | * Input: arg -- ptr to OSL internal ctlr context |
| 967 | * Output: None |
| 968 | * Return value: None |
| 969 | */ |
| 970 | static TW_VOID |
| 971 | twa_pci_intr(TW_VOID *arg) |
| 972 | { |
| 973 | struct twa_softc *sc = (struct twa_softc *)arg; |
| 974 | |
| 975 | tw_osli_dbg_dprintf(10, sc, "entered"); |
| 976 | tw_cl_interrupt(&(sc->ctlr_handle)); |
| 977 | } |
| 978 | |
| 979 | |
| 980 | /* |
| 981 | * Function name: tw_osli_fw_passthru |
| 982 | * Description: Builds a fw passthru cmd pkt, and submits it to CL. |
| 983 | * |
| 984 | * Input: sc -- ptr to OSL internal ctlr context |
| 985 | * buf -- ptr to ioctl pkt understood by CL |
| 986 | * Output: None |
| 987 | * Return value: 0 -- success |
| 988 | * non-zero-- failure |
| 989 | */ |
| 990 | TW_INT32 |
| 991 | tw_osli_fw_passthru(struct twa_softc *sc, TW_INT8 *buf) |
| 992 | { |
| 993 | struct tw_osli_req_context *req; |
| 994 | struct tw_osli_ioctl_no_data_buf *user_buf = |
| 995 | (struct tw_osli_ioctl_no_data_buf *)buf; |
| 996 | TW_TIME end_time; |
| 997 | TW_UINT32 timeout = 60; |
| 998 | TW_UINT32 data_buf_size_adjusted; |
| 999 | struct tw_cl_req_packet *req_pkt; |
| 1000 | struct tw_cl_passthru_req_packet *pt_req; |
| 1001 | TW_INT32 error; |
| 1002 | |
| 1003 | tw_osli_dbg_dprintf(5, sc, "ioctl: passthru"); |
| 1004 | |
| 1005 | if ((req = tw_osli_get_request(sc)) == NULL) |
| 1006 | return(EBUSY); |
| 1007 | |
| 1008 | req->req_handle.osl_req_ctxt = req; |
| 1009 | req->orig_req = buf; |
| 1010 | req->flags |= TW_OSLI_REQ_FLAGS_PASSTHRU; |
| 1011 | |
| 1012 | req_pkt = &(req->req_pkt); |
| 1013 | req_pkt->status = 0; |
| 1014 | req_pkt->tw_osl_callback = tw_osl_complete_passthru; |
| 1015 | /* Let the Common Layer retry the request on cmd queue full. */ |
| 1016 | req_pkt->flags |= TW_CL_REQ_RETRY_ON_BUSY; |
| 1017 | |
| 1018 | pt_req = &(req_pkt->gen_req_pkt.pt_req); |
| 1019 | /* |
| 1020 | * Make sure that the data buffer sent to firmware is a |
| 1021 | * 512 byte multiple in size. |
| 1022 | */ |
| 1023 | data_buf_size_adjusted = |
| 1024 | (user_buf->driver_pkt.buffer_length + |
| 1025 | (sc->sg_size_factor - 1)) & ~(sc->sg_size_factor - 1); |
| 1026 | if ((req->length = data_buf_size_adjusted)) { |
| 1027 | if ((req->data = kmalloc(data_buf_size_adjusted, |
| 1028 | TW_OSLI_MALLOC_CLASS, M_WAITOK)) == NULL) { |
| 1029 | error = ENOMEM; |
| 1030 | tw_osli_printf(sc, "error = %d", |
| 1031 | TW_CL_SEVERITY_ERROR_STRING, |
| 1032 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 1033 | 0x2016, |
| 1034 | "Could not alloc mem for " |
| 1035 | "fw_passthru data_buf", |
| 1036 | error); |
| 1037 | goto fw_passthru_err; |
| 1038 | } |
| 1039 | /* Copy the payload. */ |
| 1040 | if ((error = copyin((TW_VOID *)(user_buf->pdata), |
| 1041 | req->data, |
| 1042 | user_buf->driver_pkt.buffer_length)) != 0) { |
| 1043 | tw_osli_printf(sc, "error = %d", |
| 1044 | TW_CL_SEVERITY_ERROR_STRING, |
| 1045 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 1046 | 0x2017, |
| 1047 | "Could not copyin fw_passthru data_buf", |
| 1048 | error); |
| 1049 | goto fw_passthru_err; |
| 1050 | } |
| 1051 | pt_req->sgl_entries = 1; /* will be updated during mapping */ |
| 1052 | req->flags |= (TW_OSLI_REQ_FLAGS_DATA_IN | |
| 1053 | TW_OSLI_REQ_FLAGS_DATA_OUT); |
| 1054 | } else |
| 1055 | pt_req->sgl_entries = 0; /* no payload */ |
| 1056 | |
| 1057 | pt_req->cmd_pkt = (TW_VOID *)(&(user_buf->cmd_pkt)); |
| 1058 | pt_req->cmd_pkt_length = sizeof(struct tw_cl_command_packet); |
| 1059 | |
| 1060 | if ((error = tw_osli_map_request(req))) |
| 1061 | goto fw_passthru_err; |
| 1062 | |
| 1063 | end_time = tw_osl_get_local_time() + timeout; |
| 1064 | while (req->state != TW_OSLI_REQ_STATE_COMPLETE) { |
| 1065 | lockmgr(req->ioctl_wake_timeout_lock, LK_EXCLUSIVE); |
| 1066 | req->flags |= TW_OSLI_REQ_FLAGS_SLEEPING; |
| 1067 | |
| 1068 | error = lksleep(req, req->ioctl_wake_timeout_lock, 0, |
| 1069 | "twa_passthru", timeout*hz); |
| 1070 | lockmgr(req->ioctl_wake_timeout_lock, LK_RELEASE); |
| 1071 | |
| 1072 | if (!(req->flags & TW_OSLI_REQ_FLAGS_SLEEPING)) |
| 1073 | error = 0; |
| 1074 | req->flags &= ~TW_OSLI_REQ_FLAGS_SLEEPING; |
| 1075 | |
| 1076 | if (! error) { |
| 1077 | if (((error = req->error_code)) || |
| 1078 | ((error = (req->state != |
| 1079 | TW_OSLI_REQ_STATE_COMPLETE))) || |
| 1080 | ((error = req_pkt->status))) |
| 1081 | goto fw_passthru_err; |
| 1082 | break; |
| 1083 | } |
| 1084 | |
| 1085 | if (req_pkt->status) { |
| 1086 | error = req_pkt->status; |
| 1087 | goto fw_passthru_err; |
| 1088 | } |
| 1089 | |
| 1090 | if (error == EWOULDBLOCK) { |
| 1091 | /* Time out! */ |
| 1092 | if ((!(req->error_code)) && |
| 1093 | (req->state == TW_OSLI_REQ_STATE_COMPLETE) && |
| 1094 | (!(req_pkt->status)) ) { |
| 1095 | #ifdef TW_OSL_DEBUG |
| 1096 | tw_osli_printf(sc, "request = %p", |
| 1097 | TW_CL_SEVERITY_ERROR_STRING, |
| 1098 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 1099 | 0x7777, |
| 1100 | "FALSE Passthru timeout!", |
| 1101 | req); |
| 1102 | #endif /* TW_OSL_DEBUG */ |
| 1103 | error = 0; /* False error */ |
| 1104 | break; |
| 1105 | } |
| 1106 | if (!(tw_cl_is_reset_needed(&(req->ctlr->ctlr_handle)))) { |
| 1107 | #ifdef TW_OSL_DEBUG |
| 1108 | tw_osli_printf(sc, "request = %p", |
| 1109 | TW_CL_SEVERITY_ERROR_STRING, |
| 1110 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 1111 | 0x2018, |
| 1112 | "Passthru request timed out!", |
| 1113 | req); |
| 1114 | #else /* TW_OSL_DEBUG */ |
| 1115 | device_printf((sc)->bus_dev, "Passthru request timed out!\n"); |
| 1116 | #endif /* TW_OSL_DEBUG */ |
| 1117 | tw_cl_reset_ctlr(&(req->ctlr->ctlr_handle)); |
| 1118 | } |
| 1119 | |
| 1120 | error = 0; |
| 1121 | end_time = tw_osl_get_local_time() + timeout; |
| 1122 | continue; |
| 1123 | /* |
| 1124 | * Don't touch req after a reset. It (and any |
| 1125 | * associated data) will be |
| 1126 | * unmapped by the callback. |
| 1127 | */ |
| 1128 | } |
| 1129 | /* |
| 1130 | * Either the request got completed, or we were woken up by a |
| 1131 | * signal. Calculate the new timeout, in case it was the latter. |
| 1132 | */ |
| 1133 | timeout = (end_time - tw_osl_get_local_time()); |
| 1134 | } /* End of while loop */ |
| 1135 | |
| 1136 | /* If there was a payload, copy it back. */ |
| 1137 | if ((!error) && (req->length)) |
| 1138 | if ((error = copyout(req->data, user_buf->pdata, |
| 1139 | user_buf->driver_pkt.buffer_length))) |
| 1140 | tw_osli_printf(sc, "error = %d", |
| 1141 | TW_CL_SEVERITY_ERROR_STRING, |
| 1142 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 1143 | 0x2019, |
| 1144 | "Could not copyout fw_passthru data_buf", |
| 1145 | error); |
| 1146 | |
| 1147 | fw_passthru_err: |
| 1148 | |
| 1149 | if (req_pkt->status == TW_CL_ERR_REQ_BUS_RESET) |
| 1150 | error = EBUSY; |
| 1151 | |
| 1152 | user_buf->driver_pkt.os_status = error; |
| 1153 | /* Free resources. */ |
| 1154 | if (req->data) |
| 1155 | kfree(req->data, TW_OSLI_MALLOC_CLASS); |
| 1156 | tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); |
| 1157 | return(error); |
| 1158 | } |
| 1159 | |
| 1160 | |
| 1161 | |
| 1162 | /* |
| 1163 | * Function name: tw_osl_complete_passthru |
| 1164 | * Description: Called to complete passthru requests. |
| 1165 | * |
| 1166 | * Input: req_handle -- ptr to request handle |
| 1167 | * Output: None |
| 1168 | * Return value: None |
| 1169 | */ |
| 1170 | TW_VOID |
| 1171 | tw_osl_complete_passthru(struct tw_cl_req_handle *req_handle) |
| 1172 | { |
| 1173 | struct tw_osli_req_context *req = req_handle->osl_req_ctxt; |
| 1174 | struct tw_cl_req_packet *req_pkt = |
| 1175 | (struct tw_cl_req_packet *)(&req->req_pkt); |
| 1176 | struct twa_softc *sc = req->ctlr; |
| 1177 | |
| 1178 | tw_osli_dbg_dprintf(5, sc, "entered"); |
| 1179 | |
| 1180 | if (req->state != TW_OSLI_REQ_STATE_BUSY) { |
| 1181 | tw_osli_printf(sc, "request = %p, status = %d", |
| 1182 | TW_CL_SEVERITY_ERROR_STRING, |
| 1183 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 1184 | 0x201B, |
| 1185 | "Unposted command completed!!", |
| 1186 | req, req->state); |
| 1187 | } |
| 1188 | |
| 1189 | /* |
| 1190 | * Remove request from the busy queue. Just mark it complete. |
| 1191 | * There's no need to move it into the complete queue as we are |
| 1192 | * going to be done with it right now. |
| 1193 | */ |
| 1194 | req->state = TW_OSLI_REQ_STATE_COMPLETE; |
| 1195 | tw_osli_req_q_remove_item(req, TW_OSLI_BUSY_Q); |
| 1196 | |
| 1197 | tw_osli_unmap_request(req); |
| 1198 | |
| 1199 | /* |
| 1200 | * Don't do a wake up if there was an error even before the request |
| 1201 | * was sent down to the Common Layer, and we hadn't gotten an |
| 1202 | * EINPROGRESS. The request originator will then be returned an |
| 1203 | * error, and he can do the clean-up. |
| 1204 | */ |
| 1205 | if ((req->error_code) && (!(req->flags & TW_OSLI_REQ_FLAGS_IN_PROGRESS))) |
| 1206 | return; |
| 1207 | |
| 1208 | if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) { |
| 1209 | if (req->flags & TW_OSLI_REQ_FLAGS_SLEEPING) { |
| 1210 | /* Wake up the sleeping command originator. */ |
| 1211 | tw_osli_dbg_dprintf(5, sc, |
| 1212 | "Waking up originator of request %p", req); |
| 1213 | req->flags &= ~TW_OSLI_REQ_FLAGS_SLEEPING; |
| 1214 | wakeup_one(req); |
| 1215 | } else { |
| 1216 | /* |
| 1217 | * If the request completed even before mtx_sleep |
| 1218 | * was called, simply return. |
| 1219 | */ |
| 1220 | if (req->flags & TW_OSLI_REQ_FLAGS_MAPPED) |
| 1221 | return; |
| 1222 | |
| 1223 | if (req_pkt->status == TW_CL_ERR_REQ_BUS_RESET) |
| 1224 | return; |
| 1225 | |
| 1226 | tw_osli_printf(sc, "request = %p", |
| 1227 | TW_CL_SEVERITY_ERROR_STRING, |
| 1228 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 1229 | 0x201C, |
| 1230 | "Passthru callback called, " |
| 1231 | "and caller not sleeping", |
| 1232 | req); |
| 1233 | } |
| 1234 | } else { |
| 1235 | tw_osli_printf(sc, "request = %p", |
| 1236 | TW_CL_SEVERITY_ERROR_STRING, |
| 1237 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 1238 | 0x201D, |
| 1239 | "Passthru callback called for non-passthru request", |
| 1240 | req); |
| 1241 | } |
| 1242 | } |
| 1243 | |
| 1244 | |
| 1245 | |
| 1246 | /* |
| 1247 | * Function name: tw_osli_get_request |
| 1248 | * Description: Gets a request pkt from the free queue. |
| 1249 | * |
| 1250 | * Input: sc -- ptr to OSL internal ctlr context |
| 1251 | * Output: None |
| 1252 | * Return value: ptr to request pkt -- success |
| 1253 | * NULL -- failure |
| 1254 | */ |
| 1255 | struct tw_osli_req_context * |
| 1256 | tw_osli_get_request(struct twa_softc *sc) |
| 1257 | { |
| 1258 | struct tw_osli_req_context *req; |
| 1259 | |
| 1260 | tw_osli_dbg_dprintf(4, sc, "entered"); |
| 1261 | |
| 1262 | /* Get a free request packet. */ |
| 1263 | req = tw_osli_req_q_remove_head(sc, TW_OSLI_FREE_Q); |
| 1264 | |
| 1265 | /* Initialize some fields to their defaults. */ |
| 1266 | if (req) { |
| 1267 | req->req_handle.osl_req_ctxt = NULL; |
| 1268 | req->req_handle.cl_req_ctxt = NULL; |
| 1269 | req->req_handle.is_io = 0; |
| 1270 | req->data = NULL; |
| 1271 | req->length = 0; |
| 1272 | req->deadline = 0; |
| 1273 | req->real_data = NULL; |
| 1274 | req->real_length = 0; |
| 1275 | req->state = TW_OSLI_REQ_STATE_INIT;/* req being initialized */ |
| 1276 | req->flags = 0; |
| 1277 | req->error_code = 0; |
| 1278 | req->orig_req = NULL; |
| 1279 | |
| 1280 | bzero(&(req->req_pkt), sizeof(struct tw_cl_req_packet)); |
| 1281 | |
| 1282 | } |
| 1283 | return(req); |
| 1284 | } |
| 1285 | |
| 1286 | |
| 1287 | |
| 1288 | /* |
| 1289 | * Function name: twa_map_load_data_callback |
| 1290 | * Description: Callback of bus_dmamap_load for the buffer associated |
| 1291 | * with data. Updates the cmd pkt (size/sgl_entries |
| 1292 | * fields, as applicable) to reflect the number of sg |
| 1293 | * elements. |
| 1294 | * |
| 1295 | * Input: arg -- ptr to OSL internal request context |
| 1296 | * segs -- ptr to a list of segment descriptors |
| 1297 | * nsegments--# of segments |
| 1298 | * error -- 0 if no errors encountered before callback, |
| 1299 | * non-zero if errors were encountered |
| 1300 | * Output: None |
| 1301 | * Return value: None |
| 1302 | */ |
| 1303 | static TW_VOID |
| 1304 | twa_map_load_data_callback(TW_VOID *arg, bus_dma_segment_t *segs, |
| 1305 | TW_INT32 nsegments, TW_INT32 error) |
| 1306 | { |
| 1307 | struct tw_osli_req_context *req = |
| 1308 | (struct tw_osli_req_context *)arg; |
| 1309 | struct twa_softc *sc = req->ctlr; |
| 1310 | struct tw_cl_req_packet *req_pkt = &(req->req_pkt); |
| 1311 | |
| 1312 | tw_osli_dbg_dprintf(10, sc, "entered"); |
| 1313 | |
| 1314 | if (error == EINVAL) { |
| 1315 | req->error_code = error; |
| 1316 | return; |
| 1317 | } |
| 1318 | |
| 1319 | /* Mark the request as currently being processed. */ |
| 1320 | req->state = TW_OSLI_REQ_STATE_BUSY; |
| 1321 | /* Move the request into the busy queue. */ |
| 1322 | tw_osli_req_q_insert_tail(req, TW_OSLI_BUSY_Q); |
| 1323 | |
| 1324 | req->flags |= TW_OSLI_REQ_FLAGS_MAPPED; |
| 1325 | |
| 1326 | if (error == EFBIG) { |
| 1327 | req->error_code = error; |
| 1328 | goto out; |
| 1329 | } |
| 1330 | |
| 1331 | if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) { |
| 1332 | struct tw_cl_passthru_req_packet *pt_req; |
| 1333 | |
| 1334 | if (req->flags & TW_OSLI_REQ_FLAGS_DATA_IN) |
| 1335 | bus_dmamap_sync(sc->ioctl_tag, sc->ioctl_map, |
| 1336 | BUS_DMASYNC_PREREAD); |
| 1337 | |
| 1338 | if (req->flags & TW_OSLI_REQ_FLAGS_DATA_OUT) { |
| 1339 | /* |
| 1340 | * If we're using an alignment buffer, and we're |
| 1341 | * writing data, copy the real data out. |
| 1342 | */ |
| 1343 | if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) |
| 1344 | bcopy(req->real_data, req->data, req->real_length); |
| 1345 | bus_dmamap_sync(sc->ioctl_tag, sc->ioctl_map, |
| 1346 | BUS_DMASYNC_PREWRITE); |
| 1347 | } |
| 1348 | |
| 1349 | pt_req = &(req_pkt->gen_req_pkt.pt_req); |
| 1350 | pt_req->sg_list = (TW_UINT8 *)segs; |
| 1351 | pt_req->sgl_entries += (nsegments - 1); |
| 1352 | error = tw_cl_fw_passthru(&(sc->ctlr_handle), req_pkt, |
| 1353 | &(req->req_handle)); |
| 1354 | } else { |
| 1355 | struct tw_cl_scsi_req_packet *scsi_req; |
| 1356 | |
| 1357 | if (req->flags & TW_OSLI_REQ_FLAGS_DATA_IN) |
| 1358 | bus_dmamap_sync(sc->dma_tag, req->dma_map, |
| 1359 | BUS_DMASYNC_PREREAD); |
| 1360 | |
| 1361 | if (req->flags & TW_OSLI_REQ_FLAGS_DATA_OUT) { |
| 1362 | /* |
| 1363 | * If we're using an alignment buffer, and we're |
| 1364 | * writing data, copy the real data out. |
| 1365 | */ |
| 1366 | if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) |
| 1367 | bcopy(req->real_data, req->data, req->real_length); |
| 1368 | bus_dmamap_sync(sc->dma_tag, req->dma_map, |
| 1369 | BUS_DMASYNC_PREWRITE); |
| 1370 | } |
| 1371 | |
| 1372 | scsi_req = &(req_pkt->gen_req_pkt.scsi_req); |
| 1373 | scsi_req->sg_list = (TW_UINT8 *)segs; |
| 1374 | scsi_req->sgl_entries += (nsegments - 1); |
| 1375 | error = tw_cl_start_io(&(sc->ctlr_handle), req_pkt, |
| 1376 | &(req->req_handle)); |
| 1377 | } |
| 1378 | |
| 1379 | out: |
| 1380 | if (error) { |
| 1381 | req->error_code = error; |
| 1382 | req_pkt->tw_osl_callback(&(req->req_handle)); |
| 1383 | /* |
| 1384 | * If the caller had been returned EINPROGRESS, and he has |
| 1385 | * registered a callback for handling completion, the callback |
| 1386 | * will never get called because we were unable to submit the |
| 1387 | * request. So, free up the request right here. |
| 1388 | */ |
| 1389 | if (req->flags & TW_OSLI_REQ_FLAGS_IN_PROGRESS) |
| 1390 | tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); |
| 1391 | } |
| 1392 | } |
| 1393 | |
| 1394 | |
| 1395 | |
| 1396 | /* |
| 1397 | * Function name: twa_map_load_callback |
| 1398 | * Description: Callback of bus_dmamap_load for the buffer associated |
| 1399 | * with a cmd pkt. |
| 1400 | * |
| 1401 | * Input: arg -- ptr to variable to hold phys addr |
| 1402 | * segs -- ptr to a list of segment descriptors |
| 1403 | * nsegments--# of segments |
| 1404 | * error -- 0 if no errors encountered before callback, |
| 1405 | * non-zero if errors were encountered |
| 1406 | * Output: None |
| 1407 | * Return value: None |
| 1408 | */ |
| 1409 | static TW_VOID |
| 1410 | twa_map_load_callback(TW_VOID *arg, bus_dma_segment_t *segs, |
| 1411 | TW_INT32 nsegments, TW_INT32 error) |
| 1412 | { |
| 1413 | *((bus_addr_t *)arg) = segs[0].ds_addr; |
| 1414 | } |
| 1415 | |
| 1416 | |
| 1417 | |
| 1418 | /* |
| 1419 | * Function name: tw_osli_map_request |
| 1420 | * Description: Maps a cmd pkt and data associated with it, into |
| 1421 | * DMA'able memory. |
| 1422 | * |
| 1423 | * Input: req -- ptr to request pkt |
| 1424 | * Output: None |
| 1425 | * Return value: 0 -- success |
| 1426 | * non-zero-- failure |
| 1427 | */ |
| 1428 | TW_INT32 |
| 1429 | tw_osli_map_request(struct tw_osli_req_context *req) |
| 1430 | { |
| 1431 | struct twa_softc *sc = req->ctlr; |
| 1432 | TW_INT32 error = 0; |
| 1433 | |
| 1434 | tw_osli_dbg_dprintf(10, sc, "entered"); |
| 1435 | |
| 1436 | /* If the command involves data, map that too. */ |
| 1437 | if (req->data != NULL) { |
| 1438 | /* |
| 1439 | * It's sufficient for the data pointer to be 4-byte aligned |
| 1440 | * to work with 9000. However, if 4-byte aligned addresses |
| 1441 | * are passed to bus_dmamap_load, we can get back sg elements |
| 1442 | * that are not 512-byte multiples in size. So, we will let |
| 1443 | * only those buffers that are 512-byte aligned to pass |
| 1444 | * through, and bounce the rest, so as to make sure that we |
| 1445 | * always get back sg elements that are 512-byte multiples |
| 1446 | * in size. |
| 1447 | */ |
| 1448 | if (((vm_offset_t)req->data % sc->sg_size_factor) || |
| 1449 | (req->length % sc->sg_size_factor)) { |
| 1450 | req->flags |= TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED; |
| 1451 | /* Save original data pointer and length. */ |
| 1452 | req->real_data = req->data; |
| 1453 | req->real_length = req->length; |
| 1454 | req->length = (req->length + |
| 1455 | (sc->sg_size_factor - 1)) & |
| 1456 | ~(sc->sg_size_factor - 1); |
| 1457 | req->data = kmalloc(req->length, TW_OSLI_MALLOC_CLASS, |
| 1458 | M_NOWAIT); |
| 1459 | if (req->data == NULL) { |
| 1460 | tw_osli_printf(sc, "error = %d", |
| 1461 | TW_CL_SEVERITY_ERROR_STRING, |
| 1462 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 1463 | 0x201E, |
| 1464 | "Failed to allocate memory " |
| 1465 | "for bounce buffer", |
| 1466 | ENOMEM); |
| 1467 | /* Restore original data pointer and length. */ |
| 1468 | req->data = req->real_data; |
| 1469 | req->length = req->real_length; |
| 1470 | return(ENOMEM); |
| 1471 | } |
| 1472 | } |
| 1473 | |
| 1474 | /* |
| 1475 | * Map the data buffer into bus space and build the SG list. |
| 1476 | */ |
| 1477 | if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) { |
| 1478 | /* Lock against multiple simultaneous ioctl calls. */ |
| 1479 | spin_lock(sc->io_lock); |
| 1480 | error = bus_dmamap_load(sc->ioctl_tag, sc->ioctl_map, |
| 1481 | req->data, req->length, |
| 1482 | twa_map_load_data_callback, req, |
| 1483 | BUS_DMA_WAITOK); |
| 1484 | spin_unlock(sc->io_lock); |
| 1485 | } else { |
| 1486 | /* |
| 1487 | * There's only one CAM I/O thread running at a time. |
| 1488 | * So, there's no need to hold the io_lock. |
| 1489 | */ |
| 1490 | error = bus_dmamap_load(sc->dma_tag, req->dma_map, |
| 1491 | req->data, req->length, |
| 1492 | twa_map_load_data_callback, req, |
| 1493 | BUS_DMA_WAITOK); |
| 1494 | } |
| 1495 | |
| 1496 | if (!error) |
| 1497 | error = req->error_code; |
| 1498 | else { |
| 1499 | if (error == EINPROGRESS) { |
| 1500 | /* |
| 1501 | * Specifying sc->io_lock as the lockfuncarg |
| 1502 | * in ...tag_create should protect the access |
| 1503 | * of ...FLAGS_MAPPED from the callback. |
| 1504 | */ |
| 1505 | spin_lock(sc->io_lock); |
| 1506 | if (!(req->flags & TW_OSLI_REQ_FLAGS_MAPPED)) |
| 1507 | req->flags |= TW_OSLI_REQ_FLAGS_IN_PROGRESS; |
| 1508 | tw_osli_disallow_new_requests(sc, &(req->req_handle)); |
| 1509 | spin_unlock(sc->io_lock); |
| 1510 | error = 0; |
| 1511 | } else { |
| 1512 | tw_osli_printf(sc, "error = %d", |
| 1513 | TW_CL_SEVERITY_ERROR_STRING, |
| 1514 | TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, |
| 1515 | 0x9999, |
| 1516 | "Failed to map DMA memory " |
| 1517 | "for I/O request", |
| 1518 | error); |
| 1519 | req->flags |= TW_OSLI_REQ_FLAGS_FAILED; |
| 1520 | /* Free alignment buffer if it was used. */ |
| 1521 | if (req->flags & |
| 1522 | TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) { |
| 1523 | kfree(req->data, TW_OSLI_MALLOC_CLASS); |
| 1524 | /* |
| 1525 | * Restore original data pointer |
| 1526 | * and length. |
| 1527 | */ |
| 1528 | req->data = req->real_data; |
| 1529 | req->length = req->real_length; |
| 1530 | } |
| 1531 | } |
| 1532 | } |
| 1533 | |
| 1534 | } else { |
| 1535 | /* Mark the request as currently being processed. */ |
| 1536 | req->state = TW_OSLI_REQ_STATE_BUSY; |
| 1537 | /* Move the request into the busy queue. */ |
| 1538 | tw_osli_req_q_insert_tail(req, TW_OSLI_BUSY_Q); |
| 1539 | if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) |
| 1540 | error = tw_cl_fw_passthru(&sc->ctlr_handle, |
| 1541 | &(req->req_pkt), &(req->req_handle)); |
| 1542 | else |
| 1543 | error = tw_cl_start_io(&sc->ctlr_handle, |
| 1544 | &(req->req_pkt), &(req->req_handle)); |
| 1545 | if (error) { |
| 1546 | req->error_code = error; |
| 1547 | req->req_pkt.tw_osl_callback(&(req->req_handle)); |
| 1548 | } |
| 1549 | } |
| 1550 | return(error); |
| 1551 | } |
| 1552 | |
| 1553 | |
| 1554 | |
| 1555 | /* |
| 1556 | * Function name: tw_osli_unmap_request |
| 1557 | * Description: Undoes the mapping done by tw_osli_map_request. |
| 1558 | * |
| 1559 | * Input: req -- ptr to request pkt |
| 1560 | * Output: None |
| 1561 | * Return value: None |
| 1562 | */ |
| 1563 | TW_VOID |
| 1564 | tw_osli_unmap_request(struct tw_osli_req_context *req) |
| 1565 | { |
| 1566 | struct twa_softc *sc = req->ctlr; |
| 1567 | |
| 1568 | tw_osli_dbg_dprintf(10, sc, "entered"); |
| 1569 | |
| 1570 | /* If the command involved data, unmap that too. */ |
| 1571 | if (req->data != NULL) { |
| 1572 | if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) { |
| 1573 | /* Lock against multiple simultaneous ioctl calls. */ |
| 1574 | spin_lock(sc->io_lock); |
| 1575 | |
| 1576 | if (req->flags & TW_OSLI_REQ_FLAGS_DATA_IN) { |
| 1577 | bus_dmamap_sync(sc->ioctl_tag, |
| 1578 | sc->ioctl_map, BUS_DMASYNC_POSTREAD); |
| 1579 | |
| 1580 | /* |
| 1581 | * If we are using a bounce buffer, and we are |
| 1582 | * reading data, copy the real data in. |
| 1583 | */ |
| 1584 | if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) |
| 1585 | bcopy(req->data, req->real_data, |
| 1586 | req->real_length); |
| 1587 | } |
| 1588 | |
| 1589 | if (req->flags & TW_OSLI_REQ_FLAGS_DATA_OUT) |
| 1590 | bus_dmamap_sync(sc->ioctl_tag, sc->ioctl_map, |
| 1591 | BUS_DMASYNC_POSTWRITE); |
| 1592 | |
| 1593 | bus_dmamap_unload(sc->ioctl_tag, sc->ioctl_map); |
| 1594 | |
| 1595 | spin_unlock(sc->io_lock); |
| 1596 | } else { |
| 1597 | if (req->flags & TW_OSLI_REQ_FLAGS_DATA_IN) { |
| 1598 | bus_dmamap_sync(sc->dma_tag, |
| 1599 | req->dma_map, BUS_DMASYNC_POSTREAD); |
| 1600 | |
| 1601 | /* |
| 1602 | * If we are using a bounce buffer, and we are |
| 1603 | * reading data, copy the real data in. |
| 1604 | */ |
| 1605 | if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) |
| 1606 | bcopy(req->data, req->real_data, |
| 1607 | req->real_length); |
| 1608 | } |
| 1609 | if (req->flags & TW_OSLI_REQ_FLAGS_DATA_OUT) |
| 1610 | bus_dmamap_sync(sc->dma_tag, req->dma_map, |
| 1611 | BUS_DMASYNC_POSTWRITE); |
| 1612 | |
| 1613 | bus_dmamap_unload(sc->dma_tag, req->dma_map); |
| 1614 | } |
| 1615 | } |
| 1616 | |
| 1617 | /* Free alignment buffer if it was used. */ |
| 1618 | if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) { |
| 1619 | kfree(req->data, TW_OSLI_MALLOC_CLASS); |
| 1620 | /* Restore original data pointer and length. */ |
| 1621 | req->data = req->real_data; |
| 1622 | req->length = req->real_length; |
| 1623 | } |
| 1624 | } |
| 1625 | |
| 1626 | |
| 1627 | |
| 1628 | #ifdef TW_OSL_DEBUG |
| 1629 | |
| 1630 | TW_VOID twa_report_stats(TW_VOID); |
| 1631 | TW_VOID twa_reset_stats(TW_VOID); |
| 1632 | TW_VOID tw_osli_print_ctlr_stats(struct twa_softc *sc); |
| 1633 | TW_VOID twa_print_req_info(struct tw_osli_req_context *req); |
| 1634 | |
| 1635 | |
| 1636 | /* |
| 1637 | * Function name: twa_report_stats |
| 1638 | * Description: For being called from ddb. Calls functions that print |
| 1639 | * OSL and CL internal stats for the controller. |
| 1640 | * |
| 1641 | * Input: None |
| 1642 | * Output: None |
| 1643 | * Return value: None |
| 1644 | */ |
| 1645 | TW_VOID |
| 1646 | twa_report_stats(TW_VOID) |
| 1647 | { |
| 1648 | struct twa_softc *sc; |
| 1649 | TW_INT32 i; |
| 1650 | |
| 1651 | for (i = 0; (sc = devclass_get_softc(twa_devclass, i)) != NULL; i++) { |
| 1652 | tw_osli_print_ctlr_stats(sc); |
| 1653 | tw_cl_print_ctlr_stats(&sc->ctlr_handle); |
| 1654 | } |
| 1655 | } |
| 1656 | |
| 1657 | |
| 1658 | |
| 1659 | /* |
| 1660 | * Function name: tw_osli_print_ctlr_stats |
| 1661 | * Description: For being called from ddb. Prints OSL controller stats |
| 1662 | * |
| 1663 | * Input: sc -- ptr to OSL internal controller context |
| 1664 | * Output: None |
| 1665 | * Return value: None |
| 1666 | */ |
| 1667 | TW_VOID |
| 1668 | tw_osli_print_ctlr_stats(struct twa_softc *sc) |
| 1669 | { |
| 1670 | twa_printf(sc, "osl_ctlr_ctxt = %p\n", sc); |
| 1671 | twa_printf(sc, "OSLq type current max\n"); |
| 1672 | twa_printf(sc, "free %04d %04d\n", |
| 1673 | sc->q_stats[TW_OSLI_FREE_Q].cur_len, |
| 1674 | sc->q_stats[TW_OSLI_FREE_Q].max_len); |
| 1675 | twa_printf(sc, "busy %04d %04d\n", |
| 1676 | sc->q_stats[TW_OSLI_BUSY_Q].cur_len, |
| 1677 | sc->q_stats[TW_OSLI_BUSY_Q].max_len); |
| 1678 | } |
| 1679 | |
| 1680 | |
| 1681 | |
| 1682 | /* |
| 1683 | * Function name: twa_print_req_info |
| 1684 | * Description: For being called from ddb. Calls functions that print |
| 1685 | * OSL and CL internal details for the request. |
| 1686 | * |
| 1687 | * Input: req -- ptr to OSL internal request context |
| 1688 | * Output: None |
| 1689 | * Return value: None |
| 1690 | */ |
| 1691 | TW_VOID |
| 1692 | twa_print_req_info(struct tw_osli_req_context *req) |
| 1693 | { |
| 1694 | struct twa_softc *sc = req->ctlr; |
| 1695 | |
| 1696 | twa_printf(sc, "OSL details for request:\n"); |
| 1697 | twa_printf(sc, "osl_req_ctxt = %p, cl_req_ctxt = %p\n" |
| 1698 | "data = %p, length = 0x%x, real_data = %p, real_length = 0x%x\n" |
| 1699 | "state = 0x%x, flags = 0x%x, error = 0x%x, orig_req = %p\n" |
| 1700 | "next_req = %p, prev_req = %p, dma_map = %p\n", |
| 1701 | req->req_handle.osl_req_ctxt, req->req_handle.cl_req_ctxt, |
| 1702 | req->data, req->length, req->real_data, req->real_length, |
| 1703 | req->state, req->flags, req->error_code, req->orig_req, |
| 1704 | req->link.next, req->link.prev, req->dma_map); |
| 1705 | tw_cl_print_req_info(&(req->req_handle)); |
| 1706 | } |
| 1707 | |
| 1708 | |
| 1709 | |
| 1710 | /* |
| 1711 | * Function name: twa_reset_stats |
| 1712 | * Description: For being called from ddb. |
| 1713 | * Resets some OSL controller stats. |
| 1714 | * |
| 1715 | * Input: None |
| 1716 | * Output: None |
| 1717 | * Return value: None |
| 1718 | */ |
| 1719 | TW_VOID |
| 1720 | twa_reset_stats(TW_VOID) |
| 1721 | { |
| 1722 | struct twa_softc *sc; |
| 1723 | TW_INT32 i; |
| 1724 | |
| 1725 | for (i = 0; (sc = devclass_get_softc(twa_devclass, i)) != NULL; i++) { |
| 1726 | sc->q_stats[TW_OSLI_FREE_Q].max_len = 0; |
| 1727 | sc->q_stats[TW_OSLI_BUSY_Q].max_len = 0; |
| 1728 | tw_cl_reset_stats(&sc->ctlr_handle); |
| 1729 | } |
| 1730 | } |
| 1731 | |
| 1732 | #endif /* TW_OSL_DEBUG */ |