Jan-Bernd Themann | 7a29108 | 2006-09-13 17:44:31 +0200 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/net/ehea/ehea_qmr.c |
| 3 | * |
| 4 | * eHEA ethernet device driver for IBM eServer System p |
| 5 | * |
| 6 | * (C) Copyright IBM Corp. 2006 |
| 7 | * |
| 8 | * Authors: |
| 9 | * Christoph Raisch <raisch@de.ibm.com> |
| 10 | * Jan-Bernd Themann <themann@de.ibm.com> |
| 11 | * Thomas Klein <tklein@de.ibm.com> |
| 12 | * |
| 13 | * |
| 14 | * This program is free software; you can redistribute it and/or modify |
| 15 | * it under the terms of the GNU General Public License as published by |
| 16 | * the Free Software Foundation; either version 2, or (at your option) |
| 17 | * any later version. |
| 18 | * |
| 19 | * This program is distributed in the hope that it will be useful, |
| 20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | * GNU General Public License for more details. |
| 23 | * |
| 24 | * You should have received a copy of the GNU General Public License |
| 25 | * along with this program; if not, write to the Free Software |
| 26 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 27 | */ |
| 28 | |
| 29 | #include "ehea.h" |
| 30 | #include "ehea_phyp.h" |
| 31 | #include "ehea_qmr.h" |
| 32 | |
| 33 | static void *hw_qpageit_get_inc(struct hw_queue *queue) |
| 34 | { |
| 35 | void *retvalue = hw_qeit_get(queue); |
| 36 | |
| 37 | queue->current_q_offset += queue->pagesize; |
| 38 | if (queue->current_q_offset > queue->queue_length) { |
| 39 | queue->current_q_offset -= queue->pagesize; |
| 40 | retvalue = NULL; |
| 41 | } else if (((u64) retvalue) & (EHEA_PAGESIZE-1)) { |
| 42 | ehea_error("not on pageboundary"); |
| 43 | retvalue = NULL; |
| 44 | } |
| 45 | return retvalue; |
| 46 | } |
| 47 | |
| 48 | static int hw_queue_ctor(struct hw_queue *queue, const u32 nr_of_pages, |
| 49 | const u32 pagesize, const u32 qe_size) |
| 50 | { |
| 51 | int pages_per_kpage = PAGE_SIZE / pagesize; |
| 52 | int i, k; |
| 53 | |
| 54 | if ((pagesize > PAGE_SIZE) || (!pages_per_kpage)) { |
| 55 | ehea_error("pagesize conflict! kernel pagesize=%d, " |
| 56 | "ehea pagesize=%d", (int)PAGE_SIZE, (int)pagesize); |
| 57 | return -EINVAL; |
| 58 | } |
| 59 | |
| 60 | queue->queue_length = nr_of_pages * pagesize; |
| 61 | queue->queue_pages = kmalloc(nr_of_pages * sizeof(void*), GFP_KERNEL); |
| 62 | if (!queue->queue_pages) { |
| 63 | ehea_error("no mem for queue_pages"); |
| 64 | return -ENOMEM; |
| 65 | } |
| 66 | |
| 67 | /* |
| 68 | * allocate pages for queue: |
| 69 | * outer loop allocates whole kernel pages (page aligned) and |
| 70 | * inner loop divides a kernel page into smaller hea queue pages |
| 71 | */ |
| 72 | i = 0; |
| 73 | while (i < nr_of_pages) { |
| 74 | u8 *kpage = (u8*)get_zeroed_page(GFP_KERNEL); |
| 75 | if (!kpage) |
| 76 | goto out_nomem; |
| 77 | for (k = 0; k < pages_per_kpage && i < nr_of_pages; k++) { |
| 78 | (queue->queue_pages)[i] = (struct ehea_page*)kpage; |
| 79 | kpage += pagesize; |
| 80 | i++; |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | queue->current_q_offset = 0; |
| 85 | queue->qe_size = qe_size; |
| 86 | queue->pagesize = pagesize; |
| 87 | queue->toggle_state = 1; |
| 88 | |
| 89 | return 0; |
| 90 | out_nomem: |
| 91 | for (i = 0; i < nr_of_pages; i += pages_per_kpage) { |
| 92 | if (!(queue->queue_pages)[i]) |
| 93 | break; |
| 94 | free_page((unsigned long)(queue->queue_pages)[i]); |
| 95 | } |
| 96 | return -ENOMEM; |
| 97 | } |
| 98 | |
| 99 | static void hw_queue_dtor(struct hw_queue *queue) |
| 100 | { |
| 101 | int pages_per_kpage = PAGE_SIZE / queue->pagesize; |
| 102 | int i, nr_pages; |
| 103 | |
| 104 | if (!queue || !queue->queue_pages) |
| 105 | return; |
| 106 | |
| 107 | nr_pages = queue->queue_length / queue->pagesize; |
| 108 | |
| 109 | for (i = 0; i < nr_pages; i += pages_per_kpage) |
| 110 | free_page((unsigned long)(queue->queue_pages)[i]); |
| 111 | |
| 112 | kfree(queue->queue_pages); |
| 113 | } |
| 114 | |
| 115 | struct ehea_cq *ehea_create_cq(struct ehea_adapter *adapter, |
| 116 | int nr_of_cqe, u64 eq_handle, u32 cq_token) |
| 117 | { |
| 118 | struct ehea_cq *cq; |
| 119 | struct h_epa epa; |
| 120 | u64 *cq_handle_ref, hret, rpage; |
| 121 | u32 act_nr_of_entries, act_pages, counter; |
| 122 | int ret; |
| 123 | void *vpage; |
| 124 | |
| 125 | cq = kzalloc(sizeof(*cq), GFP_KERNEL); |
| 126 | if (!cq) { |
| 127 | ehea_error("no mem for cq"); |
| 128 | goto out_nomem; |
| 129 | } |
| 130 | |
| 131 | cq->attr.max_nr_of_cqes = nr_of_cqe; |
| 132 | cq->attr.cq_token = cq_token; |
| 133 | cq->attr.eq_handle = eq_handle; |
| 134 | |
| 135 | cq->adapter = adapter; |
| 136 | |
| 137 | cq_handle_ref = &cq->fw_handle; |
| 138 | act_nr_of_entries = 0; |
| 139 | act_pages = 0; |
| 140 | |
| 141 | hret = ehea_h_alloc_resource_cq(adapter->handle, &cq->attr, |
| 142 | &cq->fw_handle, &cq->epas); |
| 143 | if (hret != H_SUCCESS) { |
| 144 | ehea_error("alloc_resource_cq failed"); |
| 145 | goto out_freemem; |
| 146 | } |
| 147 | |
| 148 | ret = hw_queue_ctor(&cq->hw_queue, cq->attr.nr_pages, |
| 149 | EHEA_PAGESIZE, sizeof(struct ehea_cqe)); |
| 150 | if (ret) |
| 151 | goto out_freeres; |
| 152 | |
| 153 | for (counter = 0; counter < cq->attr.nr_pages; counter++) { |
| 154 | vpage = hw_qpageit_get_inc(&cq->hw_queue); |
| 155 | if (!vpage) { |
| 156 | ehea_error("hw_qpageit_get_inc failed"); |
| 157 | goto out_kill_hwq; |
| 158 | } |
| 159 | |
| 160 | rpage = virt_to_abs(vpage); |
| 161 | hret = ehea_h_register_rpage(adapter->handle, |
| 162 | 0, EHEA_CQ_REGISTER_ORIG, |
| 163 | cq->fw_handle, rpage, 1); |
| 164 | if (hret < H_SUCCESS) { |
| 165 | ehea_error("register_rpage_cq failed ehea_cq=%p " |
| 166 | "hret=%lx counter=%i act_pages=%i", |
| 167 | cq, hret, counter, cq->attr.nr_pages); |
| 168 | goto out_kill_hwq; |
| 169 | } |
| 170 | |
| 171 | if (counter == (cq->attr.nr_pages - 1)) { |
| 172 | vpage = hw_qpageit_get_inc(&cq->hw_queue); |
| 173 | |
| 174 | if ((hret != H_SUCCESS) || (vpage)) { |
| 175 | ehea_error("registration of pages not " |
| 176 | "complete hret=%lx\n", hret); |
| 177 | goto out_kill_hwq; |
| 178 | } |
| 179 | } else { |
| 180 | if ((hret != H_PAGE_REGISTERED) || (!vpage)) { |
| 181 | ehea_error("CQ: registration of page failed " |
| 182 | "hret=%lx\n", hret); |
| 183 | goto out_kill_hwq; |
| 184 | } |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | hw_qeit_reset(&cq->hw_queue); |
| 189 | epa = cq->epas.kernel; |
| 190 | ehea_reset_cq_ep(cq); |
| 191 | ehea_reset_cq_n1(cq); |
| 192 | |
| 193 | return cq; |
| 194 | |
| 195 | out_kill_hwq: |
| 196 | hw_queue_dtor(&cq->hw_queue); |
| 197 | |
| 198 | out_freeres: |
| 199 | ehea_h_free_resource(adapter->handle, cq->fw_handle); |
| 200 | |
| 201 | out_freemem: |
| 202 | kfree(cq); |
| 203 | |
| 204 | out_nomem: |
| 205 | return NULL; |
| 206 | } |
| 207 | |
| 208 | int ehea_destroy_cq(struct ehea_cq *cq) |
| 209 | { |
| 210 | u64 adapter_handle, hret; |
| 211 | |
Jan-Bernd Themann | 7a29108 | 2006-09-13 17:44:31 +0200 | [diff] [blame] | 212 | if (!cq) |
| 213 | return 0; |
| 214 | |
Thomas Klein | 1b5135d | 2006-11-03 17:47:20 +0100 | [diff] [blame] | 215 | adapter_handle = cq->adapter->handle; |
| 216 | |
Jan-Bernd Themann | 7a29108 | 2006-09-13 17:44:31 +0200 | [diff] [blame] | 217 | /* deregister all previous registered pages */ |
| 218 | hret = ehea_h_free_resource(adapter_handle, cq->fw_handle); |
| 219 | if (hret != H_SUCCESS) { |
| 220 | ehea_error("destroy CQ failed"); |
| 221 | return -EIO; |
| 222 | } |
| 223 | |
| 224 | hw_queue_dtor(&cq->hw_queue); |
| 225 | kfree(cq); |
| 226 | |
| 227 | return 0; |
| 228 | } |
| 229 | |
| 230 | struct ehea_eq *ehea_create_eq(struct ehea_adapter *adapter, |
| 231 | const enum ehea_eq_type type, |
| 232 | const u32 max_nr_of_eqes, const u8 eqe_gen) |
| 233 | { |
| 234 | int ret, i; |
| 235 | u64 hret, rpage; |
| 236 | void *vpage; |
| 237 | struct ehea_eq *eq; |
| 238 | |
| 239 | eq = kzalloc(sizeof(*eq), GFP_KERNEL); |
| 240 | if (!eq) { |
| 241 | ehea_error("no mem for eq"); |
| 242 | return NULL; |
| 243 | } |
| 244 | |
| 245 | eq->adapter = adapter; |
| 246 | eq->attr.type = type; |
| 247 | eq->attr.max_nr_of_eqes = max_nr_of_eqes; |
| 248 | eq->attr.eqe_gen = eqe_gen; |
| 249 | spin_lock_init(&eq->spinlock); |
| 250 | |
| 251 | hret = ehea_h_alloc_resource_eq(adapter->handle, |
| 252 | &eq->attr, &eq->fw_handle); |
| 253 | if (hret != H_SUCCESS) { |
| 254 | ehea_error("alloc_resource_eq failed"); |
| 255 | goto out_freemem; |
| 256 | } |
| 257 | |
| 258 | ret = hw_queue_ctor(&eq->hw_queue, eq->attr.nr_pages, |
| 259 | EHEA_PAGESIZE, sizeof(struct ehea_eqe)); |
| 260 | if (ret) { |
| 261 | ehea_error("can't allocate eq pages"); |
| 262 | goto out_freeres; |
| 263 | } |
| 264 | |
| 265 | for (i = 0; i < eq->attr.nr_pages; i++) { |
| 266 | vpage = hw_qpageit_get_inc(&eq->hw_queue); |
| 267 | if (!vpage) { |
| 268 | ehea_error("hw_qpageit_get_inc failed"); |
| 269 | hret = H_RESOURCE; |
| 270 | goto out_kill_hwq; |
| 271 | } |
| 272 | |
| 273 | rpage = virt_to_abs(vpage); |
| 274 | |
| 275 | hret = ehea_h_register_rpage(adapter->handle, 0, |
| 276 | EHEA_EQ_REGISTER_ORIG, |
| 277 | eq->fw_handle, rpage, 1); |
| 278 | |
| 279 | if (i == (eq->attr.nr_pages - 1)) { |
| 280 | /* last page */ |
| 281 | vpage = hw_qpageit_get_inc(&eq->hw_queue); |
| 282 | if ((hret != H_SUCCESS) || (vpage)) { |
| 283 | goto out_kill_hwq; |
| 284 | } |
| 285 | } else { |
| 286 | if ((hret != H_PAGE_REGISTERED) || (!vpage)) { |
| 287 | goto out_kill_hwq; |
| 288 | } |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | hw_qeit_reset(&eq->hw_queue); |
| 293 | return eq; |
| 294 | |
| 295 | out_kill_hwq: |
| 296 | hw_queue_dtor(&eq->hw_queue); |
| 297 | |
| 298 | out_freeres: |
| 299 | ehea_h_free_resource(adapter->handle, eq->fw_handle); |
| 300 | |
| 301 | out_freemem: |
| 302 | kfree(eq); |
| 303 | return NULL; |
| 304 | } |
| 305 | |
| 306 | struct ehea_eqe *ehea_poll_eq(struct ehea_eq *eq) |
| 307 | { |
| 308 | struct ehea_eqe *eqe; |
| 309 | unsigned long flags; |
| 310 | |
| 311 | spin_lock_irqsave(&eq->spinlock, flags); |
| 312 | eqe = (struct ehea_eqe*)hw_eqit_eq_get_inc_valid(&eq->hw_queue); |
| 313 | spin_unlock_irqrestore(&eq->spinlock, flags); |
| 314 | |
| 315 | return eqe; |
| 316 | } |
| 317 | |
| 318 | int ehea_destroy_eq(struct ehea_eq *eq) |
| 319 | { |
| 320 | u64 hret; |
| 321 | unsigned long flags; |
| 322 | |
| 323 | if (!eq) |
| 324 | return 0; |
| 325 | |
| 326 | spin_lock_irqsave(&eq->spinlock, flags); |
| 327 | |
| 328 | hret = ehea_h_free_resource(eq->adapter->handle, eq->fw_handle); |
| 329 | spin_unlock_irqrestore(&eq->spinlock, flags); |
| 330 | |
| 331 | if (hret != H_SUCCESS) { |
| 332 | ehea_error("destroy_eq failed"); |
| 333 | return -EIO; |
| 334 | } |
| 335 | |
| 336 | hw_queue_dtor(&eq->hw_queue); |
| 337 | kfree(eq); |
| 338 | |
| 339 | return 0; |
| 340 | } |
| 341 | |
| 342 | /** |
| 343 | * allocates memory for a queue and registers pages in phyp |
| 344 | */ |
| 345 | int ehea_qp_alloc_register(struct ehea_qp *qp, struct hw_queue *hw_queue, |
| 346 | int nr_pages, int wqe_size, int act_nr_sges, |
| 347 | struct ehea_adapter *adapter, int h_call_q_selector) |
| 348 | { |
| 349 | u64 hret, rpage; |
| 350 | int ret, cnt; |
| 351 | void *vpage; |
| 352 | |
| 353 | ret = hw_queue_ctor(hw_queue, nr_pages, EHEA_PAGESIZE, wqe_size); |
| 354 | if (ret) |
| 355 | return ret; |
| 356 | |
| 357 | for (cnt = 0; cnt < nr_pages; cnt++) { |
| 358 | vpage = hw_qpageit_get_inc(hw_queue); |
| 359 | if (!vpage) { |
| 360 | ehea_error("hw_qpageit_get_inc failed"); |
| 361 | goto out_kill_hwq; |
| 362 | } |
| 363 | rpage = virt_to_abs(vpage); |
| 364 | hret = ehea_h_register_rpage(adapter->handle, |
| 365 | 0, h_call_q_selector, |
| 366 | qp->fw_handle, rpage, 1); |
| 367 | if (hret < H_SUCCESS) { |
| 368 | ehea_error("register_rpage_qp failed"); |
| 369 | goto out_kill_hwq; |
| 370 | } |
| 371 | } |
| 372 | hw_qeit_reset(hw_queue); |
| 373 | return 0; |
| 374 | |
| 375 | out_kill_hwq: |
| 376 | hw_queue_dtor(hw_queue); |
| 377 | return -EIO; |
| 378 | } |
| 379 | |
| 380 | static inline u32 map_wqe_size(u8 wqe_enc_size) |
| 381 | { |
| 382 | return 128 << wqe_enc_size; |
| 383 | } |
| 384 | |
| 385 | struct ehea_qp *ehea_create_qp(struct ehea_adapter *adapter, |
| 386 | u32 pd, struct ehea_qp_init_attr *init_attr) |
| 387 | { |
| 388 | int ret; |
| 389 | u64 hret; |
| 390 | struct ehea_qp *qp; |
| 391 | u32 wqe_size_in_bytes_sq, wqe_size_in_bytes_rq1; |
| 392 | u32 wqe_size_in_bytes_rq2, wqe_size_in_bytes_rq3; |
| 393 | |
| 394 | |
| 395 | qp = kzalloc(sizeof(*qp), GFP_KERNEL); |
| 396 | if (!qp) { |
| 397 | ehea_error("no mem for qp"); |
| 398 | return NULL; |
| 399 | } |
| 400 | |
| 401 | qp->adapter = adapter; |
| 402 | |
| 403 | hret = ehea_h_alloc_resource_qp(adapter->handle, init_attr, pd, |
| 404 | &qp->fw_handle, &qp->epas); |
| 405 | if (hret != H_SUCCESS) { |
| 406 | ehea_error("ehea_h_alloc_resource_qp failed"); |
| 407 | goto out_freemem; |
| 408 | } |
| 409 | |
| 410 | wqe_size_in_bytes_sq = map_wqe_size(init_attr->act_wqe_size_enc_sq); |
| 411 | wqe_size_in_bytes_rq1 = map_wqe_size(init_attr->act_wqe_size_enc_rq1); |
| 412 | wqe_size_in_bytes_rq2 = map_wqe_size(init_attr->act_wqe_size_enc_rq2); |
| 413 | wqe_size_in_bytes_rq3 = map_wqe_size(init_attr->act_wqe_size_enc_rq3); |
| 414 | |
| 415 | ret = ehea_qp_alloc_register(qp, &qp->hw_squeue, init_attr->nr_sq_pages, |
| 416 | wqe_size_in_bytes_sq, |
| 417 | init_attr->act_wqe_size_enc_sq, adapter, |
| 418 | 0); |
| 419 | if (ret) { |
| 420 | ehea_error("can't register for sq ret=%x", ret); |
| 421 | goto out_freeres; |
| 422 | } |
| 423 | |
| 424 | ret = ehea_qp_alloc_register(qp, &qp->hw_rqueue1, |
| 425 | init_attr->nr_rq1_pages, |
| 426 | wqe_size_in_bytes_rq1, |
| 427 | init_attr->act_wqe_size_enc_rq1, |
| 428 | adapter, 1); |
| 429 | if (ret) { |
| 430 | ehea_error("can't register for rq1 ret=%x", ret); |
| 431 | goto out_kill_hwsq; |
| 432 | } |
| 433 | |
| 434 | if (init_attr->rq_count > 1) { |
| 435 | ret = ehea_qp_alloc_register(qp, &qp->hw_rqueue2, |
| 436 | init_attr->nr_rq2_pages, |
| 437 | wqe_size_in_bytes_rq2, |
| 438 | init_attr->act_wqe_size_enc_rq2, |
| 439 | adapter, 2); |
| 440 | if (ret) { |
| 441 | ehea_error("can't register for rq2 ret=%x", ret); |
| 442 | goto out_kill_hwr1q; |
| 443 | } |
| 444 | } |
| 445 | |
| 446 | if (init_attr->rq_count > 2) { |
| 447 | ret = ehea_qp_alloc_register(qp, &qp->hw_rqueue3, |
| 448 | init_attr->nr_rq3_pages, |
| 449 | wqe_size_in_bytes_rq3, |
| 450 | init_attr->act_wqe_size_enc_rq3, |
| 451 | adapter, 3); |
| 452 | if (ret) { |
| 453 | ehea_error("can't register for rq3 ret=%x", ret); |
| 454 | goto out_kill_hwr2q; |
| 455 | } |
| 456 | } |
| 457 | |
| 458 | qp->init_attr = *init_attr; |
| 459 | |
| 460 | return qp; |
| 461 | |
| 462 | out_kill_hwr2q: |
| 463 | hw_queue_dtor(&qp->hw_rqueue2); |
| 464 | |
| 465 | out_kill_hwr1q: |
| 466 | hw_queue_dtor(&qp->hw_rqueue1); |
| 467 | |
| 468 | out_kill_hwsq: |
| 469 | hw_queue_dtor(&qp->hw_squeue); |
| 470 | |
| 471 | out_freeres: |
| 472 | ehea_h_disable_and_get_hea(adapter->handle, qp->fw_handle); |
| 473 | ehea_h_free_resource(adapter->handle, qp->fw_handle); |
| 474 | |
| 475 | out_freemem: |
| 476 | kfree(qp); |
| 477 | return NULL; |
| 478 | } |
| 479 | |
| 480 | int ehea_destroy_qp(struct ehea_qp *qp) |
| 481 | { |
| 482 | u64 hret; |
| 483 | struct ehea_qp_init_attr *qp_attr = &qp->init_attr; |
| 484 | |
| 485 | if (!qp) |
| 486 | return 0; |
| 487 | |
| 488 | hret = ehea_h_free_resource(qp->adapter->handle, qp->fw_handle); |
| 489 | if (hret != H_SUCCESS) { |
| 490 | ehea_error("destroy_qp failed"); |
| 491 | return -EIO; |
| 492 | } |
| 493 | |
| 494 | hw_queue_dtor(&qp->hw_squeue); |
| 495 | hw_queue_dtor(&qp->hw_rqueue1); |
| 496 | |
| 497 | if (qp_attr->rq_count > 1) |
| 498 | hw_queue_dtor(&qp->hw_rqueue2); |
| 499 | if (qp_attr->rq_count > 2) |
| 500 | hw_queue_dtor(&qp->hw_rqueue3); |
| 501 | kfree(qp); |
| 502 | |
| 503 | return 0; |
| 504 | } |
| 505 | |
| 506 | int ehea_reg_mr_adapter(struct ehea_adapter *adapter) |
| 507 | { |
| 508 | int i, k, ret; |
| 509 | u64 hret, pt_abs, start, end, nr_pages; |
| 510 | u32 acc_ctrl = EHEA_MR_ACC_CTRL; |
| 511 | u64 *pt; |
| 512 | |
| 513 | start = KERNELBASE; |
| 514 | end = (u64)high_memory; |
Thomas Klein | a1d261c | 2006-11-03 17:48:23 +0100 | [diff] [blame] | 515 | nr_pages = (end - start) / EHEA_PAGESIZE; |
Jan-Bernd Themann | 7a29108 | 2006-09-13 17:44:31 +0200 | [diff] [blame] | 516 | |
| 517 | pt = kzalloc(PAGE_SIZE, GFP_KERNEL); |
| 518 | if (!pt) { |
| 519 | ehea_error("no mem"); |
| 520 | ret = -ENOMEM; |
| 521 | goto out; |
| 522 | } |
| 523 | pt_abs = virt_to_abs(pt); |
| 524 | |
| 525 | hret = ehea_h_alloc_resource_mr(adapter->handle, start, end - start, |
| 526 | acc_ctrl, adapter->pd, |
| 527 | &adapter->mr.handle, &adapter->mr.lkey); |
| 528 | if (hret != H_SUCCESS) { |
| 529 | ehea_error("alloc_resource_mr failed"); |
| 530 | ret = -EIO; |
| 531 | goto out; |
| 532 | } |
| 533 | |
| 534 | adapter->mr.vaddr = KERNELBASE; |
| 535 | k = 0; |
| 536 | |
| 537 | while (nr_pages > 0) { |
| 538 | if (nr_pages > 1) { |
| 539 | u64 num_pages = min(nr_pages, (u64)512); |
| 540 | for (i = 0; i < num_pages; i++) |
Thomas Klein | a1d261c | 2006-11-03 17:48:23 +0100 | [diff] [blame] | 541 | pt[i] = virt_to_abs((void*)(((u64)start) + |
| 542 | ((k++) * |
| 543 | EHEA_PAGESIZE))); |
Jan-Bernd Themann | 7a29108 | 2006-09-13 17:44:31 +0200 | [diff] [blame] | 544 | |
| 545 | hret = ehea_h_register_rpage_mr(adapter->handle, |
| 546 | adapter->mr.handle, 0, |
| 547 | 0, (u64)pt_abs, |
| 548 | num_pages); |
| 549 | nr_pages -= num_pages; |
| 550 | } else { |
Thomas Klein | a1d261c | 2006-11-03 17:48:23 +0100 | [diff] [blame] | 551 | u64 abs_adr = virt_to_abs((void*)(((u64)start) + |
| 552 | (k * EHEA_PAGESIZE))); |
| 553 | |
Jan-Bernd Themann | 7a29108 | 2006-09-13 17:44:31 +0200 | [diff] [blame] | 554 | hret = ehea_h_register_rpage_mr(adapter->handle, |
| 555 | adapter->mr.handle, 0, |
| 556 | 0, abs_adr,1); |
| 557 | nr_pages--; |
| 558 | } |
| 559 | |
| 560 | if ((hret != H_SUCCESS) && (hret != H_PAGE_REGISTERED)) { |
| 561 | ehea_h_free_resource(adapter->handle, |
| 562 | adapter->mr.handle); |
| 563 | ehea_error("register_rpage_mr failed: hret = %lX", |
| 564 | hret); |
| 565 | ret = -EIO; |
| 566 | goto out; |
| 567 | } |
| 568 | } |
| 569 | |
| 570 | if (hret != H_SUCCESS) { |
| 571 | ehea_h_free_resource(adapter->handle, adapter->mr.handle); |
| 572 | ehea_error("register_rpage failed for last page: hret = %lX", |
| 573 | hret); |
| 574 | ret = -EIO; |
| 575 | goto out; |
| 576 | } |
| 577 | ret = 0; |
| 578 | out: |
| 579 | kfree(pt); |
| 580 | return ret; |
| 581 | } |
| 582 | |
| 583 | |