Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1 | /******************************************************************* |
| 2 | * This file is part of the Emulex RoCE Device Driver for * |
| 3 | * RoCE (RDMA over Converged Ethernet) adapters. * |
| 4 | * Copyright (C) 2008-2012 Emulex. All rights reserved. * |
| 5 | * EMULEX and SLI are trademarks of Emulex. * |
| 6 | * www.emulex.com * |
| 7 | * * |
| 8 | * This program is free software; you can redistribute it and/or * |
| 9 | * modify it under the terms of version 2 of the GNU General * |
| 10 | * Public License as published by the Free Software Foundation. * |
| 11 | * This program is distributed in the hope that it will be useful. * |
| 12 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * |
| 13 | * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * |
| 14 | * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * |
| 15 | * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * |
| 16 | * TO BE LEGALLY INVALID. See the GNU General Public License for * |
| 17 | * more details, a copy of which can be found in the file COPYING * |
| 18 | * included with this package. * |
| 19 | * |
| 20 | * Contact Information: |
| 21 | * linux-drivers@emulex.com |
| 22 | * |
| 23 | * Emulex |
| 24 | * 3333 Susan Street |
| 25 | * Costa Mesa, CA 92626 |
| 26 | *******************************************************************/ |
| 27 | |
| 28 | #include <linux/dma-mapping.h> |
| 29 | #include <rdma/ib_verbs.h> |
| 30 | #include <rdma/ib_user_verbs.h> |
| 31 | #include <rdma/iw_cm.h> |
| 32 | #include <rdma/ib_umem.h> |
| 33 | #include <rdma/ib_addr.h> |
| 34 | |
| 35 | #include "ocrdma.h" |
| 36 | #include "ocrdma_hw.h" |
| 37 | #include "ocrdma_verbs.h" |
| 38 | #include "ocrdma_abi.h" |
| 39 | |
| 40 | int ocrdma_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) |
| 41 | { |
| 42 | if (index > 1) |
| 43 | return -EINVAL; |
| 44 | |
| 45 | *pkey = 0xffff; |
| 46 | return 0; |
| 47 | } |
| 48 | |
| 49 | int ocrdma_query_gid(struct ib_device *ibdev, u8 port, |
| 50 | int index, union ib_gid *sgid) |
| 51 | { |
| 52 | struct ocrdma_dev *dev; |
| 53 | |
| 54 | dev = get_ocrdma_dev(ibdev); |
| 55 | memset(sgid, 0, sizeof(*sgid)); |
Dan Carpenter | 7b33dc2 | 2012-06-14 21:36:09 +0300 | [diff] [blame] | 56 | if (index >= OCRDMA_MAX_SGID) |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 57 | return -EINVAL; |
| 58 | |
| 59 | memcpy(sgid, &dev->sgid_tbl[index], sizeof(*sgid)); |
| 60 | |
| 61 | return 0; |
| 62 | } |
| 63 | |
| 64 | int ocrdma_query_device(struct ib_device *ibdev, struct ib_device_attr *attr) |
| 65 | { |
| 66 | struct ocrdma_dev *dev = get_ocrdma_dev(ibdev); |
| 67 | |
| 68 | memset(attr, 0, sizeof *attr); |
| 69 | memcpy(&attr->fw_ver, &dev->attr.fw_ver[0], |
| 70 | min(sizeof(dev->attr.fw_ver), sizeof(attr->fw_ver))); |
| 71 | ocrdma_get_guid(dev, (u8 *)&attr->sys_image_guid); |
| 72 | attr->max_mr_size = ~0ull; |
| 73 | attr->page_size_cap = 0xffff000; |
| 74 | attr->vendor_id = dev->nic_info.pdev->vendor; |
| 75 | attr->vendor_part_id = dev->nic_info.pdev->device; |
| 76 | attr->hw_ver = 0; |
| 77 | attr->max_qp = dev->attr.max_qp; |
Naresh Gottumukkala | d3cb6c0 | 2013-08-26 15:27:40 +0530 | [diff] [blame] | 78 | attr->max_ah = OCRDMA_MAX_AH; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 79 | attr->max_qp_wr = dev->attr.max_wqe; |
| 80 | |
| 81 | attr->device_cap_flags = IB_DEVICE_CURR_QP_STATE_MOD | |
| 82 | IB_DEVICE_RC_RNR_NAK_GEN | |
| 83 | IB_DEVICE_SHUTDOWN_PORT | |
| 84 | IB_DEVICE_SYS_IMAGE_GUID | |
Naresh Gottumukkala | 2b51a9b | 2013-08-26 15:27:43 +0530 | [diff] [blame] | 85 | IB_DEVICE_LOCAL_DMA_LKEY | |
| 86 | IB_DEVICE_MEM_MGT_EXTENSIONS; |
Mahesh Vardhamanaiah | 634c579 | 2012-06-08 21:26:11 +0530 | [diff] [blame] | 87 | attr->max_sge = min(dev->attr.max_send_sge, dev->attr.max_srq_sge); |
Naresh Gottumukkala | c43e9ab | 2013-08-26 15:27:46 +0530 | [diff] [blame] | 88 | attr->max_sge_rd = 0; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 89 | attr->max_cq = dev->attr.max_cq; |
| 90 | attr->max_cqe = dev->attr.max_cqe; |
| 91 | attr->max_mr = dev->attr.max_mr; |
| 92 | attr->max_mw = 0; |
| 93 | attr->max_pd = dev->attr.max_pd; |
| 94 | attr->atomic_cap = 0; |
| 95 | attr->max_fmr = 0; |
| 96 | attr->max_map_per_fmr = 0; |
| 97 | attr->max_qp_rd_atom = |
| 98 | min(dev->attr.max_ord_per_qp, dev->attr.max_ird_per_qp); |
| 99 | attr->max_qp_init_rd_atom = dev->attr.max_ord_per_qp; |
Naresh Gottumukkala | 7c33880 | 2013-08-26 15:27:39 +0530 | [diff] [blame] | 100 | attr->max_srq = dev->attr.max_srq; |
Roland Dreier | d1e09eb | 2012-07-07 15:13:47 -0700 | [diff] [blame] | 101 | attr->max_srq_sge = dev->attr.max_srq_sge; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 102 | attr->max_srq_wr = dev->attr.max_rqe; |
| 103 | attr->local_ca_ack_delay = dev->attr.local_ca_ack_delay; |
| 104 | attr->max_fast_reg_page_list_len = 0; |
| 105 | attr->max_pkeys = 1; |
| 106 | return 0; |
| 107 | } |
| 108 | |
Naresh Gottumukkala | f24ceba | 2013-08-26 15:27:47 +0530 | [diff] [blame] | 109 | static inline void get_link_speed_and_width(struct ocrdma_dev *dev, |
| 110 | u8 *ib_speed, u8 *ib_width) |
| 111 | { |
| 112 | int status; |
| 113 | u8 speed; |
| 114 | |
| 115 | status = ocrdma_mbx_get_link_speed(dev, &speed); |
| 116 | if (status) |
| 117 | speed = OCRDMA_PHYS_LINK_SPEED_ZERO; |
| 118 | |
| 119 | switch (speed) { |
| 120 | case OCRDMA_PHYS_LINK_SPEED_1GBPS: |
| 121 | *ib_speed = IB_SPEED_SDR; |
| 122 | *ib_width = IB_WIDTH_1X; |
| 123 | break; |
| 124 | |
| 125 | case OCRDMA_PHYS_LINK_SPEED_10GBPS: |
| 126 | *ib_speed = IB_SPEED_QDR; |
| 127 | *ib_width = IB_WIDTH_1X; |
| 128 | break; |
| 129 | |
| 130 | case OCRDMA_PHYS_LINK_SPEED_20GBPS: |
| 131 | *ib_speed = IB_SPEED_DDR; |
| 132 | *ib_width = IB_WIDTH_4X; |
| 133 | break; |
| 134 | |
| 135 | case OCRDMA_PHYS_LINK_SPEED_40GBPS: |
| 136 | *ib_speed = IB_SPEED_QDR; |
| 137 | *ib_width = IB_WIDTH_4X; |
| 138 | break; |
| 139 | |
| 140 | default: |
| 141 | /* Unsupported */ |
| 142 | *ib_speed = IB_SPEED_SDR; |
| 143 | *ib_width = IB_WIDTH_1X; |
Joe Perches | 2b50176d | 2013-10-08 16:07:22 -0700 | [diff] [blame^] | 144 | } |
Naresh Gottumukkala | f24ceba | 2013-08-26 15:27:47 +0530 | [diff] [blame] | 145 | } |
| 146 | |
| 147 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 148 | int ocrdma_query_port(struct ib_device *ibdev, |
| 149 | u8 port, struct ib_port_attr *props) |
| 150 | { |
| 151 | enum ib_port_state port_state; |
| 152 | struct ocrdma_dev *dev; |
| 153 | struct net_device *netdev; |
| 154 | |
| 155 | dev = get_ocrdma_dev(ibdev); |
| 156 | if (port > 1) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 157 | pr_err("%s(%d) invalid_port=0x%x\n", __func__, |
| 158 | dev->id, port); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 159 | return -EINVAL; |
| 160 | } |
| 161 | netdev = dev->nic_info.netdev; |
| 162 | if (netif_running(netdev) && netif_oper_up(netdev)) { |
| 163 | port_state = IB_PORT_ACTIVE; |
| 164 | props->phys_state = 5; |
| 165 | } else { |
| 166 | port_state = IB_PORT_DOWN; |
| 167 | props->phys_state = 3; |
| 168 | } |
| 169 | props->max_mtu = IB_MTU_4096; |
| 170 | props->active_mtu = iboe_get_mtu(netdev->mtu); |
| 171 | props->lid = 0; |
| 172 | props->lmc = 0; |
| 173 | props->sm_lid = 0; |
| 174 | props->sm_sl = 0; |
| 175 | props->state = port_state; |
| 176 | props->port_cap_flags = |
| 177 | IB_PORT_CM_SUP | |
| 178 | IB_PORT_REINIT_SUP | |
| 179 | IB_PORT_DEVICE_MGMT_SUP | IB_PORT_VENDOR_CLASS_SUP; |
| 180 | props->gid_tbl_len = OCRDMA_MAX_SGID; |
| 181 | props->pkey_tbl_len = 1; |
| 182 | props->bad_pkey_cntr = 0; |
| 183 | props->qkey_viol_cntr = 0; |
Naresh Gottumukkala | f24ceba | 2013-08-26 15:27:47 +0530 | [diff] [blame] | 184 | get_link_speed_and_width(dev, &props->active_speed, |
| 185 | &props->active_width); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 186 | props->max_msg_sz = 0x80000000; |
| 187 | props->max_vl_num = 4; |
| 188 | return 0; |
| 189 | } |
| 190 | |
| 191 | int ocrdma_modify_port(struct ib_device *ibdev, u8 port, int mask, |
| 192 | struct ib_port_modify *props) |
| 193 | { |
| 194 | struct ocrdma_dev *dev; |
| 195 | |
| 196 | dev = get_ocrdma_dev(ibdev); |
| 197 | if (port > 1) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 198 | pr_err("%s(%d) invalid_port=0x%x\n", __func__, dev->id, port); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 199 | return -EINVAL; |
| 200 | } |
| 201 | return 0; |
| 202 | } |
| 203 | |
| 204 | static int ocrdma_add_mmap(struct ocrdma_ucontext *uctx, u64 phy_addr, |
| 205 | unsigned long len) |
| 206 | { |
| 207 | struct ocrdma_mm *mm; |
| 208 | |
| 209 | mm = kzalloc(sizeof(*mm), GFP_KERNEL); |
| 210 | if (mm == NULL) |
| 211 | return -ENOMEM; |
| 212 | mm->key.phy_addr = phy_addr; |
| 213 | mm->key.len = len; |
| 214 | INIT_LIST_HEAD(&mm->entry); |
| 215 | |
| 216 | mutex_lock(&uctx->mm_list_lock); |
| 217 | list_add_tail(&mm->entry, &uctx->mm_head); |
| 218 | mutex_unlock(&uctx->mm_list_lock); |
| 219 | return 0; |
| 220 | } |
| 221 | |
| 222 | static void ocrdma_del_mmap(struct ocrdma_ucontext *uctx, u64 phy_addr, |
| 223 | unsigned long len) |
| 224 | { |
| 225 | struct ocrdma_mm *mm, *tmp; |
| 226 | |
| 227 | mutex_lock(&uctx->mm_list_lock); |
| 228 | list_for_each_entry_safe(mm, tmp, &uctx->mm_head, entry) { |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 229 | if (len != mm->key.len && phy_addr != mm->key.phy_addr) |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 230 | continue; |
| 231 | |
| 232 | list_del(&mm->entry); |
| 233 | kfree(mm); |
| 234 | break; |
| 235 | } |
| 236 | mutex_unlock(&uctx->mm_list_lock); |
| 237 | } |
| 238 | |
| 239 | static bool ocrdma_search_mmap(struct ocrdma_ucontext *uctx, u64 phy_addr, |
| 240 | unsigned long len) |
| 241 | { |
| 242 | bool found = false; |
| 243 | struct ocrdma_mm *mm; |
| 244 | |
| 245 | mutex_lock(&uctx->mm_list_lock); |
| 246 | list_for_each_entry(mm, &uctx->mm_head, entry) { |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 247 | if (len != mm->key.len && phy_addr != mm->key.phy_addr) |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 248 | continue; |
| 249 | |
| 250 | found = true; |
| 251 | break; |
| 252 | } |
| 253 | mutex_unlock(&uctx->mm_list_lock); |
| 254 | return found; |
| 255 | } |
| 256 | |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 257 | static struct ocrdma_pd *_ocrdma_alloc_pd(struct ocrdma_dev *dev, |
| 258 | struct ocrdma_ucontext *uctx, |
| 259 | struct ib_udata *udata) |
| 260 | { |
| 261 | struct ocrdma_pd *pd = NULL; |
| 262 | int status = 0; |
| 263 | |
| 264 | pd = kzalloc(sizeof(*pd), GFP_KERNEL); |
| 265 | if (!pd) |
| 266 | return ERR_PTR(-ENOMEM); |
| 267 | |
| 268 | if (udata && uctx) { |
| 269 | pd->dpp_enabled = |
| 270 | dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY; |
| 271 | pd->num_dpp_qp = |
| 272 | pd->dpp_enabled ? OCRDMA_PD_MAX_DPP_ENABLED_QP : 0; |
| 273 | } |
| 274 | |
| 275 | retry: |
| 276 | status = ocrdma_mbx_alloc_pd(dev, pd); |
| 277 | if (status) { |
| 278 | if (pd->dpp_enabled) { |
| 279 | pd->dpp_enabled = false; |
| 280 | pd->num_dpp_qp = 0; |
| 281 | goto retry; |
| 282 | } else { |
| 283 | kfree(pd); |
| 284 | return ERR_PTR(status); |
| 285 | } |
| 286 | } |
| 287 | |
| 288 | return pd; |
| 289 | } |
| 290 | |
| 291 | static inline int is_ucontext_pd(struct ocrdma_ucontext *uctx, |
| 292 | struct ocrdma_pd *pd) |
| 293 | { |
| 294 | return (uctx->cntxt_pd == pd ? true : false); |
| 295 | } |
| 296 | |
| 297 | static int _ocrdma_dealloc_pd(struct ocrdma_dev *dev, |
| 298 | struct ocrdma_pd *pd) |
| 299 | { |
| 300 | int status = 0; |
| 301 | |
| 302 | status = ocrdma_mbx_dealloc_pd(dev, pd); |
| 303 | kfree(pd); |
| 304 | return status; |
| 305 | } |
| 306 | |
| 307 | static int ocrdma_alloc_ucontext_pd(struct ocrdma_dev *dev, |
| 308 | struct ocrdma_ucontext *uctx, |
| 309 | struct ib_udata *udata) |
| 310 | { |
| 311 | int status = 0; |
| 312 | |
| 313 | uctx->cntxt_pd = _ocrdma_alloc_pd(dev, uctx, udata); |
| 314 | if (IS_ERR(uctx->cntxt_pd)) { |
| 315 | status = PTR_ERR(uctx->cntxt_pd); |
| 316 | uctx->cntxt_pd = NULL; |
| 317 | goto err; |
| 318 | } |
| 319 | |
| 320 | uctx->cntxt_pd->uctx = uctx; |
| 321 | uctx->cntxt_pd->ibpd.device = &dev->ibdev; |
| 322 | err: |
| 323 | return status; |
| 324 | } |
| 325 | |
| 326 | static int ocrdma_dealloc_ucontext_pd(struct ocrdma_ucontext *uctx) |
| 327 | { |
| 328 | int status = 0; |
| 329 | struct ocrdma_pd *pd = uctx->cntxt_pd; |
| 330 | struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device); |
| 331 | |
| 332 | BUG_ON(uctx->pd_in_use); |
| 333 | uctx->cntxt_pd = NULL; |
| 334 | status = _ocrdma_dealloc_pd(dev, pd); |
| 335 | return status; |
| 336 | } |
| 337 | |
| 338 | static struct ocrdma_pd *ocrdma_get_ucontext_pd(struct ocrdma_ucontext *uctx) |
| 339 | { |
| 340 | struct ocrdma_pd *pd = NULL; |
| 341 | |
| 342 | mutex_lock(&uctx->mm_list_lock); |
| 343 | if (!uctx->pd_in_use) { |
| 344 | uctx->pd_in_use = true; |
| 345 | pd = uctx->cntxt_pd; |
| 346 | } |
| 347 | mutex_unlock(&uctx->mm_list_lock); |
| 348 | |
| 349 | return pd; |
| 350 | } |
| 351 | |
| 352 | static void ocrdma_release_ucontext_pd(struct ocrdma_ucontext *uctx) |
| 353 | { |
| 354 | mutex_lock(&uctx->mm_list_lock); |
| 355 | uctx->pd_in_use = false; |
| 356 | mutex_unlock(&uctx->mm_list_lock); |
| 357 | } |
| 358 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 359 | struct ib_ucontext *ocrdma_alloc_ucontext(struct ib_device *ibdev, |
| 360 | struct ib_udata *udata) |
| 361 | { |
| 362 | int status; |
| 363 | struct ocrdma_ucontext *ctx; |
| 364 | struct ocrdma_alloc_ucontext_resp resp; |
| 365 | struct ocrdma_dev *dev = get_ocrdma_dev(ibdev); |
| 366 | struct pci_dev *pdev = dev->nic_info.pdev; |
| 367 | u32 map_len = roundup(sizeof(u32) * 2048, PAGE_SIZE); |
| 368 | |
| 369 | if (!udata) |
| 370 | return ERR_PTR(-EFAULT); |
| 371 | ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); |
| 372 | if (!ctx) |
| 373 | return ERR_PTR(-ENOMEM); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 374 | INIT_LIST_HEAD(&ctx->mm_head); |
| 375 | mutex_init(&ctx->mm_list_lock); |
| 376 | |
| 377 | ctx->ah_tbl.va = dma_alloc_coherent(&pdev->dev, map_len, |
| 378 | &ctx->ah_tbl.pa, GFP_KERNEL); |
| 379 | if (!ctx->ah_tbl.va) { |
| 380 | kfree(ctx); |
| 381 | return ERR_PTR(-ENOMEM); |
| 382 | } |
| 383 | memset(ctx->ah_tbl.va, 0, map_len); |
| 384 | ctx->ah_tbl.len = map_len; |
| 385 | |
Dan Carpenter | 63ea374 | 2013-07-29 22:34:29 +0300 | [diff] [blame] | 386 | memset(&resp, 0, sizeof(resp)); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 387 | resp.ah_tbl_len = ctx->ah_tbl.len; |
| 388 | resp.ah_tbl_page = ctx->ah_tbl.pa; |
| 389 | |
| 390 | status = ocrdma_add_mmap(ctx, resp.ah_tbl_page, resp.ah_tbl_len); |
| 391 | if (status) |
| 392 | goto map_err; |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 393 | |
| 394 | status = ocrdma_alloc_ucontext_pd(dev, ctx, udata); |
| 395 | if (status) |
| 396 | goto pd_err; |
| 397 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 398 | resp.dev_id = dev->id; |
| 399 | resp.max_inline_data = dev->attr.max_inline_data; |
| 400 | resp.wqe_size = dev->attr.wqe_size; |
| 401 | resp.rqe_size = dev->attr.rqe_size; |
| 402 | resp.dpp_wqe_size = dev->attr.wqe_size; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 403 | |
| 404 | memcpy(resp.fw_ver, dev->attr.fw_ver, sizeof(resp.fw_ver)); |
| 405 | status = ib_copy_to_udata(udata, &resp, sizeof(resp)); |
| 406 | if (status) |
| 407 | goto cpy_err; |
| 408 | return &ctx->ibucontext; |
| 409 | |
| 410 | cpy_err: |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 411 | pd_err: |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 412 | ocrdma_del_mmap(ctx, ctx->ah_tbl.pa, ctx->ah_tbl.len); |
| 413 | map_err: |
| 414 | dma_free_coherent(&pdev->dev, ctx->ah_tbl.len, ctx->ah_tbl.va, |
| 415 | ctx->ah_tbl.pa); |
| 416 | kfree(ctx); |
| 417 | return ERR_PTR(status); |
| 418 | } |
| 419 | |
| 420 | int ocrdma_dealloc_ucontext(struct ib_ucontext *ibctx) |
| 421 | { |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 422 | int status = 0; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 423 | struct ocrdma_mm *mm, *tmp; |
| 424 | struct ocrdma_ucontext *uctx = get_ocrdma_ucontext(ibctx); |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 425 | struct ocrdma_dev *dev = get_ocrdma_dev(ibctx->device); |
| 426 | struct pci_dev *pdev = dev->nic_info.pdev; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 427 | |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 428 | status = ocrdma_dealloc_ucontext_pd(uctx); |
| 429 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 430 | ocrdma_del_mmap(uctx, uctx->ah_tbl.pa, uctx->ah_tbl.len); |
| 431 | dma_free_coherent(&pdev->dev, uctx->ah_tbl.len, uctx->ah_tbl.va, |
| 432 | uctx->ah_tbl.pa); |
| 433 | |
| 434 | list_for_each_entry_safe(mm, tmp, &uctx->mm_head, entry) { |
| 435 | list_del(&mm->entry); |
| 436 | kfree(mm); |
| 437 | } |
| 438 | kfree(uctx); |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 439 | return status; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 440 | } |
| 441 | |
| 442 | int ocrdma_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) |
| 443 | { |
| 444 | struct ocrdma_ucontext *ucontext = get_ocrdma_ucontext(context); |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 445 | struct ocrdma_dev *dev = get_ocrdma_dev(context->device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 446 | unsigned long vm_page = vma->vm_pgoff << PAGE_SHIFT; |
| 447 | u64 unmapped_db = (u64) dev->nic_info.unmapped_db; |
| 448 | unsigned long len = (vma->vm_end - vma->vm_start); |
| 449 | int status = 0; |
| 450 | bool found; |
| 451 | |
| 452 | if (vma->vm_start & (PAGE_SIZE - 1)) |
| 453 | return -EINVAL; |
| 454 | found = ocrdma_search_mmap(ucontext, vma->vm_pgoff << PAGE_SHIFT, len); |
| 455 | if (!found) |
| 456 | return -EINVAL; |
| 457 | |
| 458 | if ((vm_page >= unmapped_db) && (vm_page <= (unmapped_db + |
| 459 | dev->nic_info.db_total_size)) && |
| 460 | (len <= dev->nic_info.db_page_size)) { |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 461 | if (vma->vm_flags & VM_READ) |
| 462 | return -EPERM; |
| 463 | |
| 464 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 465 | status = io_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, |
| 466 | len, vma->vm_page_prot); |
| 467 | } else if (dev->nic_info.dpp_unmapped_len && |
| 468 | (vm_page >= (u64) dev->nic_info.dpp_unmapped_addr) && |
| 469 | (vm_page <= (u64) (dev->nic_info.dpp_unmapped_addr + |
| 470 | dev->nic_info.dpp_unmapped_len)) && |
| 471 | (len <= dev->nic_info.dpp_unmapped_len)) { |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 472 | if (vma->vm_flags & VM_READ) |
| 473 | return -EPERM; |
| 474 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 475 | vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); |
| 476 | status = io_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, |
| 477 | len, vma->vm_page_prot); |
| 478 | } else { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 479 | status = remap_pfn_range(vma, vma->vm_start, |
| 480 | vma->vm_pgoff, len, vma->vm_page_prot); |
| 481 | } |
| 482 | return status; |
| 483 | } |
| 484 | |
Naresh Gottumukkala | 45e86b3 | 2013-08-07 12:52:37 +0530 | [diff] [blame] | 485 | static int ocrdma_copy_pd_uresp(struct ocrdma_dev *dev, struct ocrdma_pd *pd, |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 486 | struct ib_ucontext *ib_ctx, |
| 487 | struct ib_udata *udata) |
| 488 | { |
| 489 | int status; |
| 490 | u64 db_page_addr; |
Roland Dreier | da49643 | 2012-04-16 11:32:17 -0700 | [diff] [blame] | 491 | u64 dpp_page_addr = 0; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 492 | u32 db_page_size; |
| 493 | struct ocrdma_alloc_pd_uresp rsp; |
| 494 | struct ocrdma_ucontext *uctx = get_ocrdma_ucontext(ib_ctx); |
| 495 | |
Dan Carpenter | 63ea374 | 2013-07-29 22:34:29 +0300 | [diff] [blame] | 496 | memset(&rsp, 0, sizeof(rsp)); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 497 | rsp.id = pd->id; |
| 498 | rsp.dpp_enabled = pd->dpp_enabled; |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 499 | db_page_addr = ocrdma_get_db_addr(dev, pd->id); |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 500 | db_page_size = dev->nic_info.db_page_size; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 501 | |
| 502 | status = ocrdma_add_mmap(uctx, db_page_addr, db_page_size); |
| 503 | if (status) |
| 504 | return status; |
| 505 | |
| 506 | if (pd->dpp_enabled) { |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 507 | dpp_page_addr = dev->nic_info.dpp_unmapped_addr + |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 508 | (pd->id * PAGE_SIZE); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 509 | status = ocrdma_add_mmap(uctx, dpp_page_addr, |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 510 | PAGE_SIZE); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 511 | if (status) |
| 512 | goto dpp_map_err; |
| 513 | rsp.dpp_page_addr_hi = upper_32_bits(dpp_page_addr); |
| 514 | rsp.dpp_page_addr_lo = dpp_page_addr; |
| 515 | } |
| 516 | |
| 517 | status = ib_copy_to_udata(udata, &rsp, sizeof(rsp)); |
| 518 | if (status) |
| 519 | goto ucopy_err; |
| 520 | |
| 521 | pd->uctx = uctx; |
| 522 | return 0; |
| 523 | |
| 524 | ucopy_err: |
Roland Dreier | da49643 | 2012-04-16 11:32:17 -0700 | [diff] [blame] | 525 | if (pd->dpp_enabled) |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 526 | ocrdma_del_mmap(pd->uctx, dpp_page_addr, PAGE_SIZE); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 527 | dpp_map_err: |
| 528 | ocrdma_del_mmap(pd->uctx, db_page_addr, db_page_size); |
| 529 | return status; |
| 530 | } |
| 531 | |
| 532 | struct ib_pd *ocrdma_alloc_pd(struct ib_device *ibdev, |
| 533 | struct ib_ucontext *context, |
| 534 | struct ib_udata *udata) |
| 535 | { |
| 536 | struct ocrdma_dev *dev = get_ocrdma_dev(ibdev); |
| 537 | struct ocrdma_pd *pd; |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 538 | struct ocrdma_ucontext *uctx = NULL; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 539 | int status; |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 540 | u8 is_uctx_pd = false; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 541 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 542 | if (udata && context) { |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 543 | uctx = get_ocrdma_ucontext(context); |
| 544 | pd = ocrdma_get_ucontext_pd(uctx); |
| 545 | if (pd) { |
| 546 | is_uctx_pd = true; |
| 547 | goto pd_mapping; |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 548 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 549 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 550 | |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 551 | pd = _ocrdma_alloc_pd(dev, uctx, udata); |
| 552 | if (IS_ERR(pd)) { |
| 553 | status = PTR_ERR(pd); |
| 554 | goto exit; |
| 555 | } |
| 556 | |
| 557 | pd_mapping: |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 558 | if (udata && context) { |
Naresh Gottumukkala | 45e86b3 | 2013-08-07 12:52:37 +0530 | [diff] [blame] | 559 | status = ocrdma_copy_pd_uresp(dev, pd, context, udata); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 560 | if (status) |
| 561 | goto err; |
| 562 | } |
| 563 | return &pd->ibpd; |
| 564 | |
| 565 | err: |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 566 | if (is_uctx_pd) { |
| 567 | ocrdma_release_ucontext_pd(uctx); |
| 568 | } else { |
| 569 | status = ocrdma_mbx_dealloc_pd(dev, pd); |
| 570 | kfree(pd); |
| 571 | } |
| 572 | exit: |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 573 | return ERR_PTR(status); |
| 574 | } |
| 575 | |
| 576 | int ocrdma_dealloc_pd(struct ib_pd *ibpd) |
| 577 | { |
| 578 | struct ocrdma_pd *pd = get_ocrdma_pd(ibpd); |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 579 | struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device); |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 580 | struct ocrdma_ucontext *uctx = NULL; |
| 581 | int status = 0; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 582 | u64 usr_db; |
| 583 | |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 584 | uctx = pd->uctx; |
| 585 | if (uctx) { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 586 | u64 dpp_db = dev->nic_info.dpp_unmapped_addr + |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 587 | (pd->id * PAGE_SIZE); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 588 | if (pd->dpp_enabled) |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 589 | ocrdma_del_mmap(pd->uctx, dpp_db, PAGE_SIZE); |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 590 | usr_db = ocrdma_get_db_addr(dev, pd->id); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 591 | ocrdma_del_mmap(pd->uctx, usr_db, dev->nic_info.db_page_size); |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 592 | |
| 593 | if (is_ucontext_pd(uctx, pd)) { |
| 594 | ocrdma_release_ucontext_pd(uctx); |
| 595 | return status; |
| 596 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 597 | } |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 598 | status = _ocrdma_dealloc_pd(dev, pd); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 599 | return status; |
| 600 | } |
| 601 | |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 602 | static int ocrdma_alloc_lkey(struct ocrdma_dev *dev, struct ocrdma_mr *mr, |
| 603 | u32 pdid, int acc, u32 num_pbls, u32 addr_check) |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 604 | { |
| 605 | int status; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 606 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 607 | mr->hwmr.fr_mr = 0; |
| 608 | mr->hwmr.local_rd = 1; |
| 609 | mr->hwmr.remote_rd = (acc & IB_ACCESS_REMOTE_READ) ? 1 : 0; |
| 610 | mr->hwmr.remote_wr = (acc & IB_ACCESS_REMOTE_WRITE) ? 1 : 0; |
| 611 | mr->hwmr.local_wr = (acc & IB_ACCESS_LOCAL_WRITE) ? 1 : 0; |
| 612 | mr->hwmr.mw_bind = (acc & IB_ACCESS_MW_BIND) ? 1 : 0; |
| 613 | mr->hwmr.remote_atomic = (acc & IB_ACCESS_REMOTE_ATOMIC) ? 1 : 0; |
| 614 | mr->hwmr.num_pbls = num_pbls; |
| 615 | |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 616 | status = ocrdma_mbx_alloc_lkey(dev, &mr->hwmr, pdid, addr_check); |
| 617 | if (status) |
| 618 | return status; |
| 619 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 620 | mr->ibmr.lkey = mr->hwmr.lkey; |
| 621 | if (mr->hwmr.remote_wr || mr->hwmr.remote_rd) |
| 622 | mr->ibmr.rkey = mr->hwmr.lkey; |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 623 | return 0; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 624 | } |
| 625 | |
| 626 | struct ib_mr *ocrdma_get_dma_mr(struct ib_pd *ibpd, int acc) |
| 627 | { |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 628 | int status; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 629 | struct ocrdma_mr *mr; |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 630 | struct ocrdma_pd *pd = get_ocrdma_pd(ibpd); |
| 631 | struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 632 | |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 633 | if (acc & IB_ACCESS_REMOTE_WRITE && !(acc & IB_ACCESS_LOCAL_WRITE)) { |
| 634 | pr_err("%s err, invalid access rights\n", __func__); |
| 635 | return ERR_PTR(-EINVAL); |
| 636 | } |
| 637 | |
| 638 | mr = kzalloc(sizeof(*mr), GFP_KERNEL); |
| 639 | if (!mr) |
| 640 | return ERR_PTR(-ENOMEM); |
| 641 | |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 642 | status = ocrdma_alloc_lkey(dev, mr, pd->id, acc, 0, |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 643 | OCRDMA_ADDR_CHECK_DISABLE); |
| 644 | if (status) { |
| 645 | kfree(mr); |
| 646 | return ERR_PTR(status); |
| 647 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 648 | |
| 649 | return &mr->ibmr; |
| 650 | } |
| 651 | |
| 652 | static void ocrdma_free_mr_pbl_tbl(struct ocrdma_dev *dev, |
| 653 | struct ocrdma_hw_mr *mr) |
| 654 | { |
| 655 | struct pci_dev *pdev = dev->nic_info.pdev; |
| 656 | int i = 0; |
| 657 | |
| 658 | if (mr->pbl_table) { |
| 659 | for (i = 0; i < mr->num_pbls; i++) { |
| 660 | if (!mr->pbl_table[i].va) |
| 661 | continue; |
| 662 | dma_free_coherent(&pdev->dev, mr->pbl_size, |
| 663 | mr->pbl_table[i].va, |
| 664 | mr->pbl_table[i].pa); |
| 665 | } |
| 666 | kfree(mr->pbl_table); |
| 667 | mr->pbl_table = NULL; |
| 668 | } |
| 669 | } |
| 670 | |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 671 | static int ocrdma_get_pbl_info(struct ocrdma_dev *dev, struct ocrdma_mr *mr, |
| 672 | u32 num_pbes) |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 673 | { |
| 674 | u32 num_pbls = 0; |
| 675 | u32 idx = 0; |
| 676 | int status = 0; |
| 677 | u32 pbl_size; |
| 678 | |
| 679 | do { |
| 680 | pbl_size = OCRDMA_MIN_HPAGE_SIZE * (1 << idx); |
| 681 | if (pbl_size > MAX_OCRDMA_PBL_SIZE) { |
| 682 | status = -EFAULT; |
| 683 | break; |
| 684 | } |
| 685 | num_pbls = roundup(num_pbes, (pbl_size / sizeof(u64))); |
| 686 | num_pbls = num_pbls / (pbl_size / sizeof(u64)); |
| 687 | idx++; |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 688 | } while (num_pbls >= dev->attr.max_num_mr_pbl); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 689 | |
| 690 | mr->hwmr.num_pbes = num_pbes; |
| 691 | mr->hwmr.num_pbls = num_pbls; |
| 692 | mr->hwmr.pbl_size = pbl_size; |
| 693 | return status; |
| 694 | } |
| 695 | |
| 696 | static int ocrdma_build_pbl_tbl(struct ocrdma_dev *dev, struct ocrdma_hw_mr *mr) |
| 697 | { |
| 698 | int status = 0; |
| 699 | int i; |
| 700 | u32 dma_len = mr->pbl_size; |
| 701 | struct pci_dev *pdev = dev->nic_info.pdev; |
| 702 | void *va; |
| 703 | dma_addr_t pa; |
| 704 | |
| 705 | mr->pbl_table = kzalloc(sizeof(struct ocrdma_pbl) * |
| 706 | mr->num_pbls, GFP_KERNEL); |
| 707 | |
| 708 | if (!mr->pbl_table) |
| 709 | return -ENOMEM; |
| 710 | |
| 711 | for (i = 0; i < mr->num_pbls; i++) { |
| 712 | va = dma_alloc_coherent(&pdev->dev, dma_len, &pa, GFP_KERNEL); |
| 713 | if (!va) { |
| 714 | ocrdma_free_mr_pbl_tbl(dev, mr); |
| 715 | status = -ENOMEM; |
| 716 | break; |
| 717 | } |
| 718 | memset(va, 0, dma_len); |
| 719 | mr->pbl_table[i].va = va; |
| 720 | mr->pbl_table[i].pa = pa; |
| 721 | } |
| 722 | return status; |
| 723 | } |
| 724 | |
| 725 | static void build_user_pbes(struct ocrdma_dev *dev, struct ocrdma_mr *mr, |
| 726 | u32 num_pbes) |
| 727 | { |
| 728 | struct ocrdma_pbe *pbe; |
| 729 | struct ib_umem_chunk *chunk; |
| 730 | struct ocrdma_pbl *pbl_tbl = mr->hwmr.pbl_table; |
| 731 | struct ib_umem *umem = mr->umem; |
| 732 | int i, shift, pg_cnt, pages, pbe_cnt, total_num_pbes = 0; |
| 733 | |
| 734 | if (!mr->hwmr.num_pbes) |
| 735 | return; |
| 736 | |
| 737 | pbe = (struct ocrdma_pbe *)pbl_tbl->va; |
| 738 | pbe_cnt = 0; |
| 739 | |
| 740 | shift = ilog2(umem->page_size); |
| 741 | |
| 742 | list_for_each_entry(chunk, &umem->chunk_list, list) { |
| 743 | /* get all the dma regions from the chunk. */ |
| 744 | for (i = 0; i < chunk->nmap; i++) { |
| 745 | pages = sg_dma_len(&chunk->page_list[i]) >> shift; |
| 746 | for (pg_cnt = 0; pg_cnt < pages; pg_cnt++) { |
| 747 | /* store the page address in pbe */ |
| 748 | pbe->pa_lo = |
| 749 | cpu_to_le32(sg_dma_address |
| 750 | (&chunk->page_list[i]) + |
| 751 | (umem->page_size * pg_cnt)); |
| 752 | pbe->pa_hi = |
| 753 | cpu_to_le32(upper_32_bits |
| 754 | ((sg_dma_address |
| 755 | (&chunk->page_list[i]) + |
| 756 | umem->page_size * pg_cnt))); |
| 757 | pbe_cnt += 1; |
| 758 | total_num_pbes += 1; |
| 759 | pbe++; |
| 760 | |
| 761 | /* if done building pbes, issue the mbx cmd. */ |
| 762 | if (total_num_pbes == num_pbes) |
| 763 | return; |
| 764 | |
| 765 | /* if the given pbl is full storing the pbes, |
| 766 | * move to next pbl. |
| 767 | */ |
| 768 | if (pbe_cnt == |
| 769 | (mr->hwmr.pbl_size / sizeof(u64))) { |
| 770 | pbl_tbl++; |
| 771 | pbe = (struct ocrdma_pbe *)pbl_tbl->va; |
| 772 | pbe_cnt = 0; |
| 773 | } |
| 774 | } |
| 775 | } |
| 776 | } |
| 777 | } |
| 778 | |
| 779 | struct ib_mr *ocrdma_reg_user_mr(struct ib_pd *ibpd, u64 start, u64 len, |
| 780 | u64 usr_addr, int acc, struct ib_udata *udata) |
| 781 | { |
| 782 | int status = -ENOMEM; |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 783 | struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 784 | struct ocrdma_mr *mr; |
| 785 | struct ocrdma_pd *pd; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 786 | u32 num_pbes; |
| 787 | |
| 788 | pd = get_ocrdma_pd(ibpd); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 789 | |
| 790 | if (acc & IB_ACCESS_REMOTE_WRITE && !(acc & IB_ACCESS_LOCAL_WRITE)) |
| 791 | return ERR_PTR(-EINVAL); |
| 792 | |
| 793 | mr = kzalloc(sizeof(*mr), GFP_KERNEL); |
| 794 | if (!mr) |
| 795 | return ERR_PTR(status); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 796 | mr->umem = ib_umem_get(ibpd->uobject->context, start, len, acc, 0); |
| 797 | if (IS_ERR(mr->umem)) { |
| 798 | status = -EFAULT; |
| 799 | goto umem_err; |
| 800 | } |
| 801 | num_pbes = ib_umem_page_count(mr->umem); |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 802 | status = ocrdma_get_pbl_info(dev, mr, num_pbes); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 803 | if (status) |
| 804 | goto umem_err; |
| 805 | |
| 806 | mr->hwmr.pbe_size = mr->umem->page_size; |
| 807 | mr->hwmr.fbo = mr->umem->offset; |
| 808 | mr->hwmr.va = usr_addr; |
| 809 | mr->hwmr.len = len; |
| 810 | mr->hwmr.remote_wr = (acc & IB_ACCESS_REMOTE_WRITE) ? 1 : 0; |
| 811 | mr->hwmr.remote_rd = (acc & IB_ACCESS_REMOTE_READ) ? 1 : 0; |
| 812 | mr->hwmr.local_wr = (acc & IB_ACCESS_LOCAL_WRITE) ? 1 : 0; |
| 813 | mr->hwmr.local_rd = 1; |
| 814 | mr->hwmr.remote_atomic = (acc & IB_ACCESS_REMOTE_ATOMIC) ? 1 : 0; |
| 815 | status = ocrdma_build_pbl_tbl(dev, &mr->hwmr); |
| 816 | if (status) |
| 817 | goto umem_err; |
| 818 | build_user_pbes(dev, mr, num_pbes); |
| 819 | status = ocrdma_reg_mr(dev, &mr->hwmr, pd->id, acc); |
| 820 | if (status) |
| 821 | goto mbx_err; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 822 | mr->ibmr.lkey = mr->hwmr.lkey; |
| 823 | if (mr->hwmr.remote_wr || mr->hwmr.remote_rd) |
| 824 | mr->ibmr.rkey = mr->hwmr.lkey; |
| 825 | |
| 826 | return &mr->ibmr; |
| 827 | |
| 828 | mbx_err: |
| 829 | ocrdma_free_mr_pbl_tbl(dev, &mr->hwmr); |
| 830 | umem_err: |
| 831 | kfree(mr); |
| 832 | return ERR_PTR(status); |
| 833 | } |
| 834 | |
| 835 | int ocrdma_dereg_mr(struct ib_mr *ib_mr) |
| 836 | { |
| 837 | struct ocrdma_mr *mr = get_ocrdma_mr(ib_mr); |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 838 | struct ocrdma_dev *dev = get_ocrdma_dev(ib_mr->device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 839 | int status; |
| 840 | |
| 841 | status = ocrdma_mbx_dealloc_lkey(dev, mr->hwmr.fr_mr, mr->hwmr.lkey); |
| 842 | |
| 843 | if (mr->hwmr.fr_mr == 0) |
| 844 | ocrdma_free_mr_pbl_tbl(dev, &mr->hwmr); |
| 845 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 846 | /* it could be user registered memory. */ |
| 847 | if (mr->umem) |
| 848 | ib_umem_release(mr->umem); |
| 849 | kfree(mr); |
| 850 | return status; |
| 851 | } |
| 852 | |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 853 | static int ocrdma_copy_cq_uresp(struct ocrdma_dev *dev, struct ocrdma_cq *cq, |
| 854 | struct ib_udata *udata, |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 855 | struct ib_ucontext *ib_ctx) |
| 856 | { |
| 857 | int status; |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 858 | struct ocrdma_ucontext *uctx = get_ocrdma_ucontext(ib_ctx); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 859 | struct ocrdma_create_cq_uresp uresp; |
| 860 | |
Dan Carpenter | 63ea374 | 2013-07-29 22:34:29 +0300 | [diff] [blame] | 861 | memset(&uresp, 0, sizeof(uresp)); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 862 | uresp.cq_id = cq->id; |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 863 | uresp.page_size = PAGE_ALIGN(cq->len); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 864 | uresp.num_pages = 1; |
| 865 | uresp.max_hw_cqe = cq->max_hw_cqe; |
| 866 | uresp.page_addr[0] = cq->pa; |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 867 | uresp.db_page_addr = ocrdma_get_db_addr(dev, uctx->cntxt_pd->id); |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 868 | uresp.db_page_size = dev->nic_info.db_page_size; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 869 | uresp.phase_change = cq->phase_change ? 1 : 0; |
| 870 | status = ib_copy_to_udata(udata, &uresp, sizeof(uresp)); |
| 871 | if (status) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 872 | pr_err("%s(%d) copy error cqid=0x%x.\n", |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 873 | __func__, dev->id, cq->id); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 874 | goto err; |
| 875 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 876 | status = ocrdma_add_mmap(uctx, uresp.db_page_addr, uresp.db_page_size); |
| 877 | if (status) |
| 878 | goto err; |
| 879 | status = ocrdma_add_mmap(uctx, uresp.page_addr[0], uresp.page_size); |
| 880 | if (status) { |
| 881 | ocrdma_del_mmap(uctx, uresp.db_page_addr, uresp.db_page_size); |
| 882 | goto err; |
| 883 | } |
| 884 | cq->ucontext = uctx; |
| 885 | err: |
| 886 | return status; |
| 887 | } |
| 888 | |
| 889 | struct ib_cq *ocrdma_create_cq(struct ib_device *ibdev, int entries, int vector, |
| 890 | struct ib_ucontext *ib_ctx, |
| 891 | struct ib_udata *udata) |
| 892 | { |
| 893 | struct ocrdma_cq *cq; |
| 894 | struct ocrdma_dev *dev = get_ocrdma_dev(ibdev); |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 895 | struct ocrdma_ucontext *uctx = NULL; |
| 896 | u16 pd_id = 0; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 897 | int status; |
| 898 | struct ocrdma_create_cq_ureq ureq; |
| 899 | |
| 900 | if (udata) { |
| 901 | if (ib_copy_from_udata(&ureq, udata, sizeof(ureq))) |
| 902 | return ERR_PTR(-EFAULT); |
| 903 | } else |
| 904 | ureq.dpp_cq = 0; |
| 905 | cq = kzalloc(sizeof(*cq), GFP_KERNEL); |
| 906 | if (!cq) |
| 907 | return ERR_PTR(-ENOMEM); |
| 908 | |
| 909 | spin_lock_init(&cq->cq_lock); |
| 910 | spin_lock_init(&cq->comp_handler_lock); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 911 | INIT_LIST_HEAD(&cq->sq_head); |
| 912 | INIT_LIST_HEAD(&cq->rq_head); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 913 | |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 914 | if (ib_ctx) { |
| 915 | uctx = get_ocrdma_ucontext(ib_ctx); |
| 916 | pd_id = uctx->cntxt_pd->id; |
| 917 | } |
| 918 | |
| 919 | status = ocrdma_mbx_create_cq(dev, cq, entries, ureq.dpp_cq, pd_id); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 920 | if (status) { |
| 921 | kfree(cq); |
| 922 | return ERR_PTR(status); |
| 923 | } |
| 924 | if (ib_ctx) { |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 925 | status = ocrdma_copy_cq_uresp(dev, cq, udata, ib_ctx); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 926 | if (status) |
| 927 | goto ctx_err; |
| 928 | } |
| 929 | cq->phase = OCRDMA_CQE_VALID; |
| 930 | cq->arm_needed = true; |
| 931 | dev->cq_tbl[cq->id] = cq; |
| 932 | |
| 933 | return &cq->ibcq; |
| 934 | |
| 935 | ctx_err: |
| 936 | ocrdma_mbx_destroy_cq(dev, cq); |
| 937 | kfree(cq); |
| 938 | return ERR_PTR(status); |
| 939 | } |
| 940 | |
| 941 | int ocrdma_resize_cq(struct ib_cq *ibcq, int new_cnt, |
| 942 | struct ib_udata *udata) |
| 943 | { |
| 944 | int status = 0; |
| 945 | struct ocrdma_cq *cq = get_ocrdma_cq(ibcq); |
| 946 | |
| 947 | if (new_cnt < 1 || new_cnt > cq->max_hw_cqe) { |
| 948 | status = -EINVAL; |
| 949 | return status; |
| 950 | } |
| 951 | ibcq->cqe = new_cnt; |
| 952 | return status; |
| 953 | } |
| 954 | |
| 955 | int ocrdma_destroy_cq(struct ib_cq *ibcq) |
| 956 | { |
| 957 | int status; |
| 958 | struct ocrdma_cq *cq = get_ocrdma_cq(ibcq); |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 959 | struct ocrdma_dev *dev = get_ocrdma_dev(ibcq->device); |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 960 | int pdid = 0; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 961 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 962 | status = ocrdma_mbx_destroy_cq(dev, cq); |
| 963 | |
| 964 | if (cq->ucontext) { |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 965 | pdid = cq->ucontext->cntxt_pd->id; |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 966 | ocrdma_del_mmap(cq->ucontext, (u64) cq->pa, |
| 967 | PAGE_ALIGN(cq->len)); |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 968 | ocrdma_del_mmap(cq->ucontext, |
| 969 | ocrdma_get_db_addr(dev, pdid), |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 970 | dev->nic_info.db_page_size); |
| 971 | } |
| 972 | dev->cq_tbl[cq->id] = NULL; |
| 973 | |
| 974 | kfree(cq); |
| 975 | return status; |
| 976 | } |
| 977 | |
| 978 | static int ocrdma_add_qpn_map(struct ocrdma_dev *dev, struct ocrdma_qp *qp) |
| 979 | { |
| 980 | int status = -EINVAL; |
| 981 | |
| 982 | if (qp->id < OCRDMA_MAX_QP && dev->qp_tbl[qp->id] == NULL) { |
| 983 | dev->qp_tbl[qp->id] = qp; |
| 984 | status = 0; |
| 985 | } |
| 986 | return status; |
| 987 | } |
| 988 | |
| 989 | static void ocrdma_del_qpn_map(struct ocrdma_dev *dev, struct ocrdma_qp *qp) |
| 990 | { |
| 991 | dev->qp_tbl[qp->id] = NULL; |
| 992 | } |
| 993 | |
| 994 | static int ocrdma_check_qp_params(struct ib_pd *ibpd, struct ocrdma_dev *dev, |
| 995 | struct ib_qp_init_attr *attrs) |
| 996 | { |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 997 | if ((attrs->qp_type != IB_QPT_GSI) && |
| 998 | (attrs->qp_type != IB_QPT_RC) && |
| 999 | (attrs->qp_type != IB_QPT_UC) && |
| 1000 | (attrs->qp_type != IB_QPT_UD)) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1001 | pr_err("%s(%d) unsupported qp type=0x%x requested\n", |
| 1002 | __func__, dev->id, attrs->qp_type); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1003 | return -EINVAL; |
| 1004 | } |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1005 | /* Skip the check for QP1 to support CM size of 128 */ |
| 1006 | if ((attrs->qp_type != IB_QPT_GSI) && |
| 1007 | (attrs->cap.max_send_wr > dev->attr.max_wqe)) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1008 | pr_err("%s(%d) unsupported send_wr=0x%x requested\n", |
| 1009 | __func__, dev->id, attrs->cap.max_send_wr); |
| 1010 | pr_err("%s(%d) supported send_wr=0x%x\n", |
| 1011 | __func__, dev->id, dev->attr.max_wqe); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1012 | return -EINVAL; |
| 1013 | } |
| 1014 | if (!attrs->srq && (attrs->cap.max_recv_wr > dev->attr.max_rqe)) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1015 | pr_err("%s(%d) unsupported recv_wr=0x%x requested\n", |
| 1016 | __func__, dev->id, attrs->cap.max_recv_wr); |
| 1017 | pr_err("%s(%d) supported recv_wr=0x%x\n", |
| 1018 | __func__, dev->id, dev->attr.max_rqe); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1019 | return -EINVAL; |
| 1020 | } |
| 1021 | if (attrs->cap.max_inline_data > dev->attr.max_inline_data) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1022 | pr_err("%s(%d) unsupported inline data size=0x%x requested\n", |
| 1023 | __func__, dev->id, attrs->cap.max_inline_data); |
| 1024 | pr_err("%s(%d) supported inline data size=0x%x\n", |
| 1025 | __func__, dev->id, dev->attr.max_inline_data); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1026 | return -EINVAL; |
| 1027 | } |
| 1028 | if (attrs->cap.max_send_sge > dev->attr.max_send_sge) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1029 | pr_err("%s(%d) unsupported send_sge=0x%x requested\n", |
| 1030 | __func__, dev->id, attrs->cap.max_send_sge); |
| 1031 | pr_err("%s(%d) supported send_sge=0x%x\n", |
| 1032 | __func__, dev->id, dev->attr.max_send_sge); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1033 | return -EINVAL; |
| 1034 | } |
| 1035 | if (attrs->cap.max_recv_sge > dev->attr.max_recv_sge) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1036 | pr_err("%s(%d) unsupported recv_sge=0x%x requested\n", |
| 1037 | __func__, dev->id, attrs->cap.max_recv_sge); |
| 1038 | pr_err("%s(%d) supported recv_sge=0x%x\n", |
| 1039 | __func__, dev->id, dev->attr.max_recv_sge); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1040 | return -EINVAL; |
| 1041 | } |
| 1042 | /* unprivileged user space cannot create special QP */ |
| 1043 | if (ibpd->uobject && attrs->qp_type == IB_QPT_GSI) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1044 | pr_err |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1045 | ("%s(%d) Userspace can't create special QPs of type=0x%x\n", |
| 1046 | __func__, dev->id, attrs->qp_type); |
| 1047 | return -EINVAL; |
| 1048 | } |
| 1049 | /* allow creating only one GSI type of QP */ |
| 1050 | if (attrs->qp_type == IB_QPT_GSI && dev->gsi_qp_created) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1051 | pr_err("%s(%d) GSI special QPs already created.\n", |
| 1052 | __func__, dev->id); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1053 | return -EINVAL; |
| 1054 | } |
| 1055 | /* verify consumer QPs are not trying to use GSI QP's CQ */ |
| 1056 | if ((attrs->qp_type != IB_QPT_GSI) && (dev->gsi_qp_created)) { |
| 1057 | if ((dev->gsi_sqcq == get_ocrdma_cq(attrs->send_cq)) || |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1058 | (dev->gsi_rqcq == get_ocrdma_cq(attrs->recv_cq))) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1059 | pr_err("%s(%d) Consumer QP cannot use GSI CQs.\n", |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1060 | __func__, dev->id); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1061 | return -EINVAL; |
| 1062 | } |
| 1063 | } |
| 1064 | return 0; |
| 1065 | } |
| 1066 | |
| 1067 | static int ocrdma_copy_qp_uresp(struct ocrdma_qp *qp, |
| 1068 | struct ib_udata *udata, int dpp_offset, |
| 1069 | int dpp_credit_lmt, int srq) |
| 1070 | { |
| 1071 | int status = 0; |
| 1072 | u64 usr_db; |
| 1073 | struct ocrdma_create_qp_uresp uresp; |
| 1074 | struct ocrdma_dev *dev = qp->dev; |
| 1075 | struct ocrdma_pd *pd = qp->pd; |
| 1076 | |
| 1077 | memset(&uresp, 0, sizeof(uresp)); |
| 1078 | usr_db = dev->nic_info.unmapped_db + |
| 1079 | (pd->id * dev->nic_info.db_page_size); |
| 1080 | uresp.qp_id = qp->id; |
| 1081 | uresp.sq_dbid = qp->sq.dbid; |
| 1082 | uresp.num_sq_pages = 1; |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1083 | uresp.sq_page_size = PAGE_ALIGN(qp->sq.len); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1084 | uresp.sq_page_addr[0] = qp->sq.pa; |
| 1085 | uresp.num_wqe_allocated = qp->sq.max_cnt; |
| 1086 | if (!srq) { |
| 1087 | uresp.rq_dbid = qp->rq.dbid; |
| 1088 | uresp.num_rq_pages = 1; |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1089 | uresp.rq_page_size = PAGE_ALIGN(qp->rq.len); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1090 | uresp.rq_page_addr[0] = qp->rq.pa; |
| 1091 | uresp.num_rqe_allocated = qp->rq.max_cnt; |
| 1092 | } |
| 1093 | uresp.db_page_addr = usr_db; |
| 1094 | uresp.db_page_size = dev->nic_info.db_page_size; |
| 1095 | if (dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY) { |
| 1096 | uresp.db_sq_offset = OCRDMA_DB_GEN2_SQ_OFFSET; |
Naresh Gottumukkala | f11220e | 2013-08-26 15:27:42 +0530 | [diff] [blame] | 1097 | uresp.db_rq_offset = OCRDMA_DB_GEN2_RQ_OFFSET; |
| 1098 | uresp.db_shift = 24; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1099 | } else { |
| 1100 | uresp.db_sq_offset = OCRDMA_DB_SQ_OFFSET; |
| 1101 | uresp.db_rq_offset = OCRDMA_DB_RQ_OFFSET; |
| 1102 | uresp.db_shift = 16; |
| 1103 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1104 | |
| 1105 | if (qp->dpp_enabled) { |
| 1106 | uresp.dpp_credit = dpp_credit_lmt; |
| 1107 | uresp.dpp_offset = dpp_offset; |
| 1108 | } |
| 1109 | status = ib_copy_to_udata(udata, &uresp, sizeof(uresp)); |
| 1110 | if (status) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1111 | pr_err("%s(%d) user copy error.\n", __func__, dev->id); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1112 | goto err; |
| 1113 | } |
| 1114 | status = ocrdma_add_mmap(pd->uctx, uresp.sq_page_addr[0], |
| 1115 | uresp.sq_page_size); |
| 1116 | if (status) |
| 1117 | goto err; |
| 1118 | |
| 1119 | if (!srq) { |
| 1120 | status = ocrdma_add_mmap(pd->uctx, uresp.rq_page_addr[0], |
| 1121 | uresp.rq_page_size); |
| 1122 | if (status) |
| 1123 | goto rq_map_err; |
| 1124 | } |
| 1125 | return status; |
| 1126 | rq_map_err: |
| 1127 | ocrdma_del_mmap(pd->uctx, uresp.sq_page_addr[0], uresp.sq_page_size); |
| 1128 | err: |
| 1129 | return status; |
| 1130 | } |
| 1131 | |
| 1132 | static void ocrdma_set_qp_db(struct ocrdma_dev *dev, struct ocrdma_qp *qp, |
| 1133 | struct ocrdma_pd *pd) |
| 1134 | { |
| 1135 | if (dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY) { |
| 1136 | qp->sq_db = dev->nic_info.db + |
| 1137 | (pd->id * dev->nic_info.db_page_size) + |
| 1138 | OCRDMA_DB_GEN2_SQ_OFFSET; |
| 1139 | qp->rq_db = dev->nic_info.db + |
| 1140 | (pd->id * dev->nic_info.db_page_size) + |
Naresh Gottumukkala | f11220e | 2013-08-26 15:27:42 +0530 | [diff] [blame] | 1141 | OCRDMA_DB_GEN2_RQ_OFFSET; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1142 | } else { |
| 1143 | qp->sq_db = dev->nic_info.db + |
| 1144 | (pd->id * dev->nic_info.db_page_size) + |
| 1145 | OCRDMA_DB_SQ_OFFSET; |
| 1146 | qp->rq_db = dev->nic_info.db + |
| 1147 | (pd->id * dev->nic_info.db_page_size) + |
| 1148 | OCRDMA_DB_RQ_OFFSET; |
| 1149 | } |
| 1150 | } |
| 1151 | |
| 1152 | static int ocrdma_alloc_wr_id_tbl(struct ocrdma_qp *qp) |
| 1153 | { |
| 1154 | qp->wqe_wr_id_tbl = |
| 1155 | kzalloc(sizeof(*(qp->wqe_wr_id_tbl)) * qp->sq.max_cnt, |
| 1156 | GFP_KERNEL); |
| 1157 | if (qp->wqe_wr_id_tbl == NULL) |
| 1158 | return -ENOMEM; |
| 1159 | qp->rqe_wr_id_tbl = |
| 1160 | kzalloc(sizeof(u64) * qp->rq.max_cnt, GFP_KERNEL); |
| 1161 | if (qp->rqe_wr_id_tbl == NULL) |
| 1162 | return -ENOMEM; |
| 1163 | |
| 1164 | return 0; |
| 1165 | } |
| 1166 | |
| 1167 | static void ocrdma_set_qp_init_params(struct ocrdma_qp *qp, |
| 1168 | struct ocrdma_pd *pd, |
| 1169 | struct ib_qp_init_attr *attrs) |
| 1170 | { |
| 1171 | qp->pd = pd; |
| 1172 | spin_lock_init(&qp->q_lock); |
| 1173 | INIT_LIST_HEAD(&qp->sq_entry); |
| 1174 | INIT_LIST_HEAD(&qp->rq_entry); |
| 1175 | |
| 1176 | qp->qp_type = attrs->qp_type; |
| 1177 | qp->cap_flags = OCRDMA_QP_INB_RD | OCRDMA_QP_INB_WR; |
| 1178 | qp->max_inline_data = attrs->cap.max_inline_data; |
| 1179 | qp->sq.max_sges = attrs->cap.max_send_sge; |
| 1180 | qp->rq.max_sges = attrs->cap.max_recv_sge; |
| 1181 | qp->state = OCRDMA_QPS_RST; |
Naresh Gottumukkala | 2b51a9b | 2013-08-26 15:27:43 +0530 | [diff] [blame] | 1182 | qp->signaled = (attrs->sq_sig_type == IB_SIGNAL_ALL_WR) ? true : false; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1183 | } |
| 1184 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1185 | |
| 1186 | static void ocrdma_store_gsi_qp_cq(struct ocrdma_dev *dev, |
| 1187 | struct ib_qp_init_attr *attrs) |
| 1188 | { |
| 1189 | if (attrs->qp_type == IB_QPT_GSI) { |
| 1190 | dev->gsi_qp_created = 1; |
| 1191 | dev->gsi_sqcq = get_ocrdma_cq(attrs->send_cq); |
| 1192 | dev->gsi_rqcq = get_ocrdma_cq(attrs->recv_cq); |
| 1193 | } |
| 1194 | } |
| 1195 | |
| 1196 | struct ib_qp *ocrdma_create_qp(struct ib_pd *ibpd, |
| 1197 | struct ib_qp_init_attr *attrs, |
| 1198 | struct ib_udata *udata) |
| 1199 | { |
| 1200 | int status; |
| 1201 | struct ocrdma_pd *pd = get_ocrdma_pd(ibpd); |
| 1202 | struct ocrdma_qp *qp; |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 1203 | struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1204 | struct ocrdma_create_qp_ureq ureq; |
| 1205 | u16 dpp_credit_lmt, dpp_offset; |
| 1206 | |
| 1207 | status = ocrdma_check_qp_params(ibpd, dev, attrs); |
| 1208 | if (status) |
| 1209 | goto gen_err; |
| 1210 | |
| 1211 | memset(&ureq, 0, sizeof(ureq)); |
| 1212 | if (udata) { |
| 1213 | if (ib_copy_from_udata(&ureq, udata, sizeof(ureq))) |
| 1214 | return ERR_PTR(-EFAULT); |
| 1215 | } |
| 1216 | qp = kzalloc(sizeof(*qp), GFP_KERNEL); |
| 1217 | if (!qp) { |
| 1218 | status = -ENOMEM; |
| 1219 | goto gen_err; |
| 1220 | } |
| 1221 | qp->dev = dev; |
| 1222 | ocrdma_set_qp_init_params(qp, pd, attrs); |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1223 | if (udata == NULL) |
| 1224 | qp->cap_flags |= (OCRDMA_QP_MW_BIND | OCRDMA_QP_LKEY0 | |
| 1225 | OCRDMA_QP_FAST_REG); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1226 | |
| 1227 | mutex_lock(&dev->dev_lock); |
| 1228 | status = ocrdma_mbx_create_qp(qp, attrs, ureq.enable_dpp_cq, |
| 1229 | ureq.dpp_cq_id, |
| 1230 | &dpp_offset, &dpp_credit_lmt); |
| 1231 | if (status) |
| 1232 | goto mbx_err; |
| 1233 | |
| 1234 | /* user space QP's wr_id table are managed in library */ |
| 1235 | if (udata == NULL) { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1236 | status = ocrdma_alloc_wr_id_tbl(qp); |
| 1237 | if (status) |
| 1238 | goto map_err; |
| 1239 | } |
| 1240 | |
| 1241 | status = ocrdma_add_qpn_map(dev, qp); |
| 1242 | if (status) |
| 1243 | goto map_err; |
| 1244 | ocrdma_set_qp_db(dev, qp, pd); |
| 1245 | if (udata) { |
| 1246 | status = ocrdma_copy_qp_uresp(qp, udata, dpp_offset, |
| 1247 | dpp_credit_lmt, |
| 1248 | (attrs->srq != NULL)); |
| 1249 | if (status) |
| 1250 | goto cpy_err; |
| 1251 | } |
| 1252 | ocrdma_store_gsi_qp_cq(dev, attrs); |
Gottumukkala, Naresh | 27159f5 | 2013-06-05 08:50:46 +0000 | [diff] [blame] | 1253 | qp->ibqp.qp_num = qp->id; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1254 | mutex_unlock(&dev->dev_lock); |
| 1255 | return &qp->ibqp; |
| 1256 | |
| 1257 | cpy_err: |
| 1258 | ocrdma_del_qpn_map(dev, qp); |
| 1259 | map_err: |
| 1260 | ocrdma_mbx_destroy_qp(dev, qp); |
| 1261 | mbx_err: |
| 1262 | mutex_unlock(&dev->dev_lock); |
| 1263 | kfree(qp->wqe_wr_id_tbl); |
| 1264 | kfree(qp->rqe_wr_id_tbl); |
| 1265 | kfree(qp); |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1266 | pr_err("%s(%d) error=%d\n", __func__, dev->id, status); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1267 | gen_err: |
| 1268 | return ERR_PTR(status); |
| 1269 | } |
| 1270 | |
Naresh Gottumukkala | 45e86b3 | 2013-08-07 12:52:37 +0530 | [diff] [blame] | 1271 | |
| 1272 | static void ocrdma_flush_rq_db(struct ocrdma_qp *qp) |
| 1273 | { |
| 1274 | if (qp->db_cache) { |
| 1275 | u32 val = qp->rq.dbid | (qp->db_cache << |
| 1276 | ocrdma_get_num_posted_shift(qp)); |
| 1277 | iowrite32(val, qp->rq_db); |
| 1278 | qp->db_cache = 0; |
| 1279 | } |
| 1280 | } |
| 1281 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1282 | int _ocrdma_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, |
| 1283 | int attr_mask) |
| 1284 | { |
| 1285 | int status = 0; |
| 1286 | struct ocrdma_qp *qp; |
| 1287 | struct ocrdma_dev *dev; |
| 1288 | enum ib_qp_state old_qps; |
| 1289 | |
| 1290 | qp = get_ocrdma_qp(ibqp); |
| 1291 | dev = qp->dev; |
| 1292 | if (attr_mask & IB_QP_STATE) |
Naresh Gottumukkala | 057729c | 2013-08-07 12:52:35 +0530 | [diff] [blame] | 1293 | status = ocrdma_qp_state_change(qp, attr->qp_state, &old_qps); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1294 | /* if new and previous states are same hw doesn't need to |
| 1295 | * know about it. |
| 1296 | */ |
| 1297 | if (status < 0) |
| 1298 | return status; |
| 1299 | status = ocrdma_mbx_modify_qp(dev, qp, attr, attr_mask, old_qps); |
Naresh Gottumukkala | 45e86b3 | 2013-08-07 12:52:37 +0530 | [diff] [blame] | 1300 | if (!status && attr_mask & IB_QP_STATE && attr->qp_state == IB_QPS_RTR) |
| 1301 | ocrdma_flush_rq_db(qp); |
| 1302 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1303 | return status; |
| 1304 | } |
| 1305 | |
| 1306 | int ocrdma_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, |
| 1307 | int attr_mask, struct ib_udata *udata) |
| 1308 | { |
| 1309 | unsigned long flags; |
| 1310 | int status = -EINVAL; |
| 1311 | struct ocrdma_qp *qp; |
| 1312 | struct ocrdma_dev *dev; |
| 1313 | enum ib_qp_state old_qps, new_qps; |
| 1314 | |
| 1315 | qp = get_ocrdma_qp(ibqp); |
| 1316 | dev = qp->dev; |
| 1317 | |
| 1318 | /* syncronize with multiple context trying to change, retrive qps */ |
| 1319 | mutex_lock(&dev->dev_lock); |
| 1320 | /* syncronize with wqe, rqe posting and cqe processing contexts */ |
| 1321 | spin_lock_irqsave(&qp->q_lock, flags); |
| 1322 | old_qps = get_ibqp_state(qp->state); |
| 1323 | if (attr_mask & IB_QP_STATE) |
| 1324 | new_qps = attr->qp_state; |
| 1325 | else |
| 1326 | new_qps = old_qps; |
| 1327 | spin_unlock_irqrestore(&qp->q_lock, flags); |
| 1328 | |
| 1329 | if (!ib_modify_qp_is_ok(old_qps, new_qps, ibqp->qp_type, attr_mask)) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1330 | pr_err("%s(%d) invalid attribute mask=0x%x specified for\n" |
| 1331 | "qpn=0x%x of type=0x%x old_qps=0x%x, new_qps=0x%x\n", |
| 1332 | __func__, dev->id, attr_mask, qp->id, ibqp->qp_type, |
| 1333 | old_qps, new_qps); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1334 | goto param_err; |
| 1335 | } |
| 1336 | |
| 1337 | status = _ocrdma_modify_qp(ibqp, attr, attr_mask); |
| 1338 | if (status > 0) |
| 1339 | status = 0; |
| 1340 | param_err: |
| 1341 | mutex_unlock(&dev->dev_lock); |
| 1342 | return status; |
| 1343 | } |
| 1344 | |
| 1345 | static enum ib_mtu ocrdma_mtu_int_to_enum(u16 mtu) |
| 1346 | { |
| 1347 | switch (mtu) { |
| 1348 | case 256: |
| 1349 | return IB_MTU_256; |
| 1350 | case 512: |
| 1351 | return IB_MTU_512; |
| 1352 | case 1024: |
| 1353 | return IB_MTU_1024; |
| 1354 | case 2048: |
| 1355 | return IB_MTU_2048; |
| 1356 | case 4096: |
| 1357 | return IB_MTU_4096; |
| 1358 | default: |
| 1359 | return IB_MTU_1024; |
| 1360 | } |
| 1361 | } |
| 1362 | |
| 1363 | static int ocrdma_to_ib_qp_acc_flags(int qp_cap_flags) |
| 1364 | { |
| 1365 | int ib_qp_acc_flags = 0; |
| 1366 | |
| 1367 | if (qp_cap_flags & OCRDMA_QP_INB_WR) |
| 1368 | ib_qp_acc_flags |= IB_ACCESS_REMOTE_WRITE; |
| 1369 | if (qp_cap_flags & OCRDMA_QP_INB_RD) |
| 1370 | ib_qp_acc_flags |= IB_ACCESS_LOCAL_WRITE; |
| 1371 | return ib_qp_acc_flags; |
| 1372 | } |
| 1373 | |
| 1374 | int ocrdma_query_qp(struct ib_qp *ibqp, |
| 1375 | struct ib_qp_attr *qp_attr, |
| 1376 | int attr_mask, struct ib_qp_init_attr *qp_init_attr) |
| 1377 | { |
| 1378 | int status; |
| 1379 | u32 qp_state; |
| 1380 | struct ocrdma_qp_params params; |
| 1381 | struct ocrdma_qp *qp = get_ocrdma_qp(ibqp); |
| 1382 | struct ocrdma_dev *dev = qp->dev; |
| 1383 | |
| 1384 | memset(¶ms, 0, sizeof(params)); |
| 1385 | mutex_lock(&dev->dev_lock); |
| 1386 | status = ocrdma_mbx_query_qp(dev, qp, ¶ms); |
| 1387 | mutex_unlock(&dev->dev_lock); |
| 1388 | if (status) |
| 1389 | goto mbx_err; |
| 1390 | qp_attr->qp_state = get_ibqp_state(IB_QPS_INIT); |
| 1391 | qp_attr->cur_qp_state = get_ibqp_state(IB_QPS_INIT); |
| 1392 | qp_attr->path_mtu = |
| 1393 | ocrdma_mtu_int_to_enum(params.path_mtu_pkey_indx & |
| 1394 | OCRDMA_QP_PARAMS_PATH_MTU_MASK) >> |
| 1395 | OCRDMA_QP_PARAMS_PATH_MTU_SHIFT; |
| 1396 | qp_attr->path_mig_state = IB_MIG_MIGRATED; |
| 1397 | qp_attr->rq_psn = params.hop_lmt_rq_psn & OCRDMA_QP_PARAMS_RQ_PSN_MASK; |
| 1398 | qp_attr->sq_psn = params.tclass_sq_psn & OCRDMA_QP_PARAMS_SQ_PSN_MASK; |
| 1399 | qp_attr->dest_qp_num = |
| 1400 | params.ack_to_rnr_rtc_dest_qpn & OCRDMA_QP_PARAMS_DEST_QPN_MASK; |
| 1401 | |
| 1402 | qp_attr->qp_access_flags = ocrdma_to_ib_qp_acc_flags(qp->cap_flags); |
| 1403 | qp_attr->cap.max_send_wr = qp->sq.max_cnt - 1; |
| 1404 | qp_attr->cap.max_recv_wr = qp->rq.max_cnt - 1; |
| 1405 | qp_attr->cap.max_send_sge = qp->sq.max_sges; |
| 1406 | qp_attr->cap.max_recv_sge = qp->rq.max_sges; |
Naresh Gottumukkala | c43e9ab | 2013-08-26 15:27:46 +0530 | [diff] [blame] | 1407 | qp_attr->cap.max_inline_data = qp->max_inline_data; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1408 | qp_init_attr->cap = qp_attr->cap; |
| 1409 | memcpy(&qp_attr->ah_attr.grh.dgid, ¶ms.dgid[0], |
| 1410 | sizeof(params.dgid)); |
| 1411 | qp_attr->ah_attr.grh.flow_label = params.rnt_rc_sl_fl & |
| 1412 | OCRDMA_QP_PARAMS_FLOW_LABEL_MASK; |
| 1413 | qp_attr->ah_attr.grh.sgid_index = qp->sgid_idx; |
| 1414 | qp_attr->ah_attr.grh.hop_limit = (params.hop_lmt_rq_psn & |
| 1415 | OCRDMA_QP_PARAMS_HOP_LMT_MASK) >> |
| 1416 | OCRDMA_QP_PARAMS_HOP_LMT_SHIFT; |
| 1417 | qp_attr->ah_attr.grh.traffic_class = (params.tclass_sq_psn & |
| 1418 | OCRDMA_QP_PARAMS_SQ_PSN_MASK) >> |
| 1419 | OCRDMA_QP_PARAMS_TCLASS_SHIFT; |
| 1420 | |
| 1421 | qp_attr->ah_attr.ah_flags = IB_AH_GRH; |
| 1422 | qp_attr->ah_attr.port_num = 1; |
| 1423 | qp_attr->ah_attr.sl = (params.rnt_rc_sl_fl & |
| 1424 | OCRDMA_QP_PARAMS_SL_MASK) >> |
| 1425 | OCRDMA_QP_PARAMS_SL_SHIFT; |
| 1426 | qp_attr->timeout = (params.ack_to_rnr_rtc_dest_qpn & |
| 1427 | OCRDMA_QP_PARAMS_ACK_TIMEOUT_MASK) >> |
| 1428 | OCRDMA_QP_PARAMS_ACK_TIMEOUT_SHIFT; |
| 1429 | qp_attr->rnr_retry = (params.ack_to_rnr_rtc_dest_qpn & |
| 1430 | OCRDMA_QP_PARAMS_RNR_RETRY_CNT_MASK) >> |
| 1431 | OCRDMA_QP_PARAMS_RNR_RETRY_CNT_SHIFT; |
| 1432 | qp_attr->retry_cnt = |
| 1433 | (params.rnt_rc_sl_fl & OCRDMA_QP_PARAMS_RETRY_CNT_MASK) >> |
| 1434 | OCRDMA_QP_PARAMS_RETRY_CNT_SHIFT; |
| 1435 | qp_attr->min_rnr_timer = 0; |
| 1436 | qp_attr->pkey_index = 0; |
| 1437 | qp_attr->port_num = 1; |
| 1438 | qp_attr->ah_attr.src_path_bits = 0; |
| 1439 | qp_attr->ah_attr.static_rate = 0; |
| 1440 | qp_attr->alt_pkey_index = 0; |
| 1441 | qp_attr->alt_port_num = 0; |
| 1442 | qp_attr->alt_timeout = 0; |
| 1443 | memset(&qp_attr->alt_ah_attr, 0, sizeof(qp_attr->alt_ah_attr)); |
| 1444 | qp_state = (params.max_sge_recv_flags & OCRDMA_QP_PARAMS_STATE_MASK) >> |
| 1445 | OCRDMA_QP_PARAMS_STATE_SHIFT; |
| 1446 | qp_attr->sq_draining = (qp_state == OCRDMA_QPS_SQ_DRAINING) ? 1 : 0; |
| 1447 | qp_attr->max_dest_rd_atomic = |
| 1448 | params.max_ord_ird >> OCRDMA_QP_PARAMS_MAX_ORD_SHIFT; |
| 1449 | qp_attr->max_rd_atomic = |
| 1450 | params.max_ord_ird & OCRDMA_QP_PARAMS_MAX_IRD_MASK; |
| 1451 | qp_attr->en_sqd_async_notify = (params.max_sge_recv_flags & |
| 1452 | OCRDMA_QP_PARAMS_FLAGS_SQD_ASYNC) ? 1 : 0; |
| 1453 | mbx_err: |
| 1454 | return status; |
| 1455 | } |
| 1456 | |
| 1457 | static void ocrdma_srq_toggle_bit(struct ocrdma_srq *srq, int idx) |
| 1458 | { |
| 1459 | int i = idx / 32; |
| 1460 | unsigned int mask = (1 << (idx % 32)); |
| 1461 | |
| 1462 | if (srq->idx_bit_fields[i] & mask) |
| 1463 | srq->idx_bit_fields[i] &= ~mask; |
| 1464 | else |
| 1465 | srq->idx_bit_fields[i] |= mask; |
| 1466 | } |
| 1467 | |
| 1468 | static int ocrdma_hwq_free_cnt(struct ocrdma_qp_hwq_info *q) |
| 1469 | { |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1470 | return ((q->max_wqe_idx - q->head) + q->tail) % q->max_cnt; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1471 | } |
| 1472 | |
| 1473 | static int is_hw_sq_empty(struct ocrdma_qp *qp) |
| 1474 | { |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1475 | return (qp->sq.tail == qp->sq.head); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1476 | } |
| 1477 | |
| 1478 | static int is_hw_rq_empty(struct ocrdma_qp *qp) |
| 1479 | { |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1480 | return (qp->rq.tail == qp->rq.head); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1481 | } |
| 1482 | |
| 1483 | static void *ocrdma_hwq_head(struct ocrdma_qp_hwq_info *q) |
| 1484 | { |
| 1485 | return q->va + (q->head * q->entry_size); |
| 1486 | } |
| 1487 | |
| 1488 | static void *ocrdma_hwq_head_from_idx(struct ocrdma_qp_hwq_info *q, |
| 1489 | u32 idx) |
| 1490 | { |
| 1491 | return q->va + (idx * q->entry_size); |
| 1492 | } |
| 1493 | |
| 1494 | static void ocrdma_hwq_inc_head(struct ocrdma_qp_hwq_info *q) |
| 1495 | { |
| 1496 | q->head = (q->head + 1) & q->max_wqe_idx; |
| 1497 | } |
| 1498 | |
| 1499 | static void ocrdma_hwq_inc_tail(struct ocrdma_qp_hwq_info *q) |
| 1500 | { |
| 1501 | q->tail = (q->tail + 1) & q->max_wqe_idx; |
| 1502 | } |
| 1503 | |
| 1504 | /* discard the cqe for a given QP */ |
| 1505 | static void ocrdma_discard_cqes(struct ocrdma_qp *qp, struct ocrdma_cq *cq) |
| 1506 | { |
| 1507 | unsigned long cq_flags; |
| 1508 | unsigned long flags; |
| 1509 | int discard_cnt = 0; |
| 1510 | u32 cur_getp, stop_getp; |
| 1511 | struct ocrdma_cqe *cqe; |
| 1512 | u32 qpn = 0; |
| 1513 | |
| 1514 | spin_lock_irqsave(&cq->cq_lock, cq_flags); |
| 1515 | |
| 1516 | /* traverse through the CQEs in the hw CQ, |
| 1517 | * find the matching CQE for a given qp, |
| 1518 | * mark the matching one discarded by clearing qpn. |
| 1519 | * ring the doorbell in the poll_cq() as |
| 1520 | * we don't complete out of order cqe. |
| 1521 | */ |
| 1522 | |
| 1523 | cur_getp = cq->getp; |
| 1524 | /* find upto when do we reap the cq. */ |
| 1525 | stop_getp = cur_getp; |
| 1526 | do { |
| 1527 | if (is_hw_sq_empty(qp) && (!qp->srq && is_hw_rq_empty(qp))) |
| 1528 | break; |
| 1529 | |
| 1530 | cqe = cq->va + cur_getp; |
| 1531 | /* if (a) done reaping whole hw cq, or |
| 1532 | * (b) qp_xq becomes empty. |
| 1533 | * then exit |
| 1534 | */ |
| 1535 | qpn = cqe->cmn.qpn & OCRDMA_CQE_QPN_MASK; |
| 1536 | /* if previously discarded cqe found, skip that too. */ |
| 1537 | /* check for matching qp */ |
| 1538 | if (qpn == 0 || qpn != qp->id) |
| 1539 | goto skip_cqe; |
| 1540 | |
| 1541 | /* mark cqe discarded so that it is not picked up later |
| 1542 | * in the poll_cq(). |
| 1543 | */ |
| 1544 | discard_cnt += 1; |
| 1545 | cqe->cmn.qpn = 0; |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 1546 | if (is_cqe_for_sq(cqe)) { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1547 | ocrdma_hwq_inc_tail(&qp->sq); |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 1548 | } else { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1549 | if (qp->srq) { |
| 1550 | spin_lock_irqsave(&qp->srq->q_lock, flags); |
| 1551 | ocrdma_hwq_inc_tail(&qp->srq->rq); |
| 1552 | ocrdma_srq_toggle_bit(qp->srq, cur_getp); |
| 1553 | spin_unlock_irqrestore(&qp->srq->q_lock, flags); |
| 1554 | |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 1555 | } else { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1556 | ocrdma_hwq_inc_tail(&qp->rq); |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 1557 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1558 | } |
| 1559 | skip_cqe: |
| 1560 | cur_getp = (cur_getp + 1) % cq->max_hw_cqe; |
| 1561 | } while (cur_getp != stop_getp); |
| 1562 | spin_unlock_irqrestore(&cq->cq_lock, cq_flags); |
| 1563 | } |
| 1564 | |
Naresh Gottumukkala | f11220e | 2013-08-26 15:27:42 +0530 | [diff] [blame] | 1565 | void ocrdma_del_flush_qp(struct ocrdma_qp *qp) |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1566 | { |
| 1567 | int found = false; |
| 1568 | unsigned long flags; |
| 1569 | struct ocrdma_dev *dev = qp->dev; |
| 1570 | /* sync with any active CQ poll */ |
| 1571 | |
| 1572 | spin_lock_irqsave(&dev->flush_q_lock, flags); |
| 1573 | found = ocrdma_is_qp_in_sq_flushlist(qp->sq_cq, qp); |
| 1574 | if (found) |
| 1575 | list_del(&qp->sq_entry); |
| 1576 | if (!qp->srq) { |
| 1577 | found = ocrdma_is_qp_in_rq_flushlist(qp->rq_cq, qp); |
| 1578 | if (found) |
| 1579 | list_del(&qp->rq_entry); |
| 1580 | } |
| 1581 | spin_unlock_irqrestore(&dev->flush_q_lock, flags); |
| 1582 | } |
| 1583 | |
| 1584 | int ocrdma_destroy_qp(struct ib_qp *ibqp) |
| 1585 | { |
| 1586 | int status; |
| 1587 | struct ocrdma_pd *pd; |
| 1588 | struct ocrdma_qp *qp; |
| 1589 | struct ocrdma_dev *dev; |
| 1590 | struct ib_qp_attr attrs; |
| 1591 | int attr_mask = IB_QP_STATE; |
Dan Carpenter | d19081e | 2012-05-02 09:14:47 +0300 | [diff] [blame] | 1592 | unsigned long flags; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1593 | |
| 1594 | qp = get_ocrdma_qp(ibqp); |
| 1595 | dev = qp->dev; |
| 1596 | |
| 1597 | attrs.qp_state = IB_QPS_ERR; |
| 1598 | pd = qp->pd; |
| 1599 | |
| 1600 | /* change the QP state to ERROR */ |
| 1601 | _ocrdma_modify_qp(ibqp, &attrs, attr_mask); |
| 1602 | |
| 1603 | /* ensure that CQEs for newly created QP (whose id may be same with |
| 1604 | * one which just getting destroyed are same), dont get |
| 1605 | * discarded until the old CQEs are discarded. |
| 1606 | */ |
| 1607 | mutex_lock(&dev->dev_lock); |
| 1608 | status = ocrdma_mbx_destroy_qp(dev, qp); |
| 1609 | |
| 1610 | /* |
| 1611 | * acquire CQ lock while destroy is in progress, in order to |
| 1612 | * protect against proessing in-flight CQEs for this QP. |
| 1613 | */ |
Dan Carpenter | d19081e | 2012-05-02 09:14:47 +0300 | [diff] [blame] | 1614 | spin_lock_irqsave(&qp->sq_cq->cq_lock, flags); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1615 | if (qp->rq_cq && (qp->rq_cq != qp->sq_cq)) |
Dan Carpenter | d19081e | 2012-05-02 09:14:47 +0300 | [diff] [blame] | 1616 | spin_lock(&qp->rq_cq->cq_lock); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1617 | |
| 1618 | ocrdma_del_qpn_map(dev, qp); |
| 1619 | |
| 1620 | if (qp->rq_cq && (qp->rq_cq != qp->sq_cq)) |
Dan Carpenter | d19081e | 2012-05-02 09:14:47 +0300 | [diff] [blame] | 1621 | spin_unlock(&qp->rq_cq->cq_lock); |
| 1622 | spin_unlock_irqrestore(&qp->sq_cq->cq_lock, flags); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1623 | |
| 1624 | if (!pd->uctx) { |
| 1625 | ocrdma_discard_cqes(qp, qp->sq_cq); |
| 1626 | ocrdma_discard_cqes(qp, qp->rq_cq); |
| 1627 | } |
| 1628 | mutex_unlock(&dev->dev_lock); |
| 1629 | |
| 1630 | if (pd->uctx) { |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1631 | ocrdma_del_mmap(pd->uctx, (u64) qp->sq.pa, |
| 1632 | PAGE_ALIGN(qp->sq.len)); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1633 | if (!qp->srq) |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1634 | ocrdma_del_mmap(pd->uctx, (u64) qp->rq.pa, |
| 1635 | PAGE_ALIGN(qp->rq.len)); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1636 | } |
| 1637 | |
| 1638 | ocrdma_del_flush_qp(qp); |
| 1639 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1640 | kfree(qp->wqe_wr_id_tbl); |
| 1641 | kfree(qp->rqe_wr_id_tbl); |
| 1642 | kfree(qp); |
| 1643 | return status; |
| 1644 | } |
| 1645 | |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 1646 | static int ocrdma_copy_srq_uresp(struct ocrdma_dev *dev, struct ocrdma_srq *srq, |
| 1647 | struct ib_udata *udata) |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1648 | { |
| 1649 | int status; |
| 1650 | struct ocrdma_create_srq_uresp uresp; |
| 1651 | |
Dan Carpenter | 63ea374 | 2013-07-29 22:34:29 +0300 | [diff] [blame] | 1652 | memset(&uresp, 0, sizeof(uresp)); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1653 | uresp.rq_dbid = srq->rq.dbid; |
| 1654 | uresp.num_rq_pages = 1; |
| 1655 | uresp.rq_page_addr[0] = srq->rq.pa; |
| 1656 | uresp.rq_page_size = srq->rq.len; |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 1657 | uresp.db_page_addr = dev->nic_info.unmapped_db + |
| 1658 | (srq->pd->id * dev->nic_info.db_page_size); |
| 1659 | uresp.db_page_size = dev->nic_info.db_page_size; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1660 | uresp.num_rqe_allocated = srq->rq.max_cnt; |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 1661 | if (dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY) { |
Naresh Gottumukkala | f11220e | 2013-08-26 15:27:42 +0530 | [diff] [blame] | 1662 | uresp.db_rq_offset = OCRDMA_DB_GEN2_RQ_OFFSET; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1663 | uresp.db_shift = 24; |
| 1664 | } else { |
| 1665 | uresp.db_rq_offset = OCRDMA_DB_RQ_OFFSET; |
| 1666 | uresp.db_shift = 16; |
| 1667 | } |
| 1668 | |
| 1669 | status = ib_copy_to_udata(udata, &uresp, sizeof(uresp)); |
| 1670 | if (status) |
| 1671 | return status; |
| 1672 | status = ocrdma_add_mmap(srq->pd->uctx, uresp.rq_page_addr[0], |
| 1673 | uresp.rq_page_size); |
| 1674 | if (status) |
| 1675 | return status; |
| 1676 | return status; |
| 1677 | } |
| 1678 | |
| 1679 | struct ib_srq *ocrdma_create_srq(struct ib_pd *ibpd, |
| 1680 | struct ib_srq_init_attr *init_attr, |
| 1681 | struct ib_udata *udata) |
| 1682 | { |
| 1683 | int status = -ENOMEM; |
| 1684 | struct ocrdma_pd *pd = get_ocrdma_pd(ibpd); |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 1685 | struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1686 | struct ocrdma_srq *srq; |
| 1687 | |
| 1688 | if (init_attr->attr.max_sge > dev->attr.max_recv_sge) |
| 1689 | return ERR_PTR(-EINVAL); |
| 1690 | if (init_attr->attr.max_wr > dev->attr.max_rqe) |
| 1691 | return ERR_PTR(-EINVAL); |
| 1692 | |
| 1693 | srq = kzalloc(sizeof(*srq), GFP_KERNEL); |
| 1694 | if (!srq) |
| 1695 | return ERR_PTR(status); |
| 1696 | |
| 1697 | spin_lock_init(&srq->q_lock); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1698 | srq->pd = pd; |
| 1699 | srq->db = dev->nic_info.db + (pd->id * dev->nic_info.db_page_size); |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 1700 | status = ocrdma_mbx_create_srq(dev, srq, init_attr, pd); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1701 | if (status) |
| 1702 | goto err; |
| 1703 | |
| 1704 | if (udata == NULL) { |
| 1705 | srq->rqe_wr_id_tbl = kzalloc(sizeof(u64) * srq->rq.max_cnt, |
| 1706 | GFP_KERNEL); |
| 1707 | if (srq->rqe_wr_id_tbl == NULL) |
| 1708 | goto arm_err; |
| 1709 | |
| 1710 | srq->bit_fields_len = (srq->rq.max_cnt / 32) + |
| 1711 | (srq->rq.max_cnt % 32 ? 1 : 0); |
| 1712 | srq->idx_bit_fields = |
| 1713 | kmalloc(srq->bit_fields_len * sizeof(u32), GFP_KERNEL); |
| 1714 | if (srq->idx_bit_fields == NULL) |
| 1715 | goto arm_err; |
| 1716 | memset(srq->idx_bit_fields, 0xff, |
| 1717 | srq->bit_fields_len * sizeof(u32)); |
| 1718 | } |
| 1719 | |
| 1720 | if (init_attr->attr.srq_limit) { |
| 1721 | status = ocrdma_mbx_modify_srq(srq, &init_attr->attr); |
| 1722 | if (status) |
| 1723 | goto arm_err; |
| 1724 | } |
| 1725 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1726 | if (udata) { |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 1727 | status = ocrdma_copy_srq_uresp(dev, srq, udata); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1728 | if (status) |
| 1729 | goto arm_err; |
| 1730 | } |
| 1731 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1732 | return &srq->ibsrq; |
| 1733 | |
| 1734 | arm_err: |
| 1735 | ocrdma_mbx_destroy_srq(dev, srq); |
| 1736 | err: |
| 1737 | kfree(srq->rqe_wr_id_tbl); |
| 1738 | kfree(srq->idx_bit_fields); |
| 1739 | kfree(srq); |
| 1740 | return ERR_PTR(status); |
| 1741 | } |
| 1742 | |
| 1743 | int ocrdma_modify_srq(struct ib_srq *ibsrq, |
| 1744 | struct ib_srq_attr *srq_attr, |
| 1745 | enum ib_srq_attr_mask srq_attr_mask, |
| 1746 | struct ib_udata *udata) |
| 1747 | { |
| 1748 | int status = 0; |
| 1749 | struct ocrdma_srq *srq; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1750 | |
| 1751 | srq = get_ocrdma_srq(ibsrq); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1752 | if (srq_attr_mask & IB_SRQ_MAX_WR) |
| 1753 | status = -EINVAL; |
| 1754 | else |
| 1755 | status = ocrdma_mbx_modify_srq(srq, srq_attr); |
| 1756 | return status; |
| 1757 | } |
| 1758 | |
| 1759 | int ocrdma_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr) |
| 1760 | { |
| 1761 | int status; |
| 1762 | struct ocrdma_srq *srq; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1763 | |
| 1764 | srq = get_ocrdma_srq(ibsrq); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1765 | status = ocrdma_mbx_query_srq(srq, srq_attr); |
| 1766 | return status; |
| 1767 | } |
| 1768 | |
| 1769 | int ocrdma_destroy_srq(struct ib_srq *ibsrq) |
| 1770 | { |
| 1771 | int status; |
| 1772 | struct ocrdma_srq *srq; |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 1773 | struct ocrdma_dev *dev = get_ocrdma_dev(ibsrq->device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1774 | |
| 1775 | srq = get_ocrdma_srq(ibsrq); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1776 | |
| 1777 | status = ocrdma_mbx_destroy_srq(dev, srq); |
| 1778 | |
| 1779 | if (srq->pd->uctx) |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1780 | ocrdma_del_mmap(srq->pd->uctx, (u64) srq->rq.pa, |
| 1781 | PAGE_ALIGN(srq->rq.len)); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1782 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1783 | kfree(srq->idx_bit_fields); |
| 1784 | kfree(srq->rqe_wr_id_tbl); |
| 1785 | kfree(srq); |
| 1786 | return status; |
| 1787 | } |
| 1788 | |
| 1789 | /* unprivileged verbs and their support functions. */ |
| 1790 | static void ocrdma_build_ud_hdr(struct ocrdma_qp *qp, |
| 1791 | struct ocrdma_hdr_wqe *hdr, |
| 1792 | struct ib_send_wr *wr) |
| 1793 | { |
| 1794 | struct ocrdma_ewqe_ud_hdr *ud_hdr = |
| 1795 | (struct ocrdma_ewqe_ud_hdr *)(hdr + 1); |
| 1796 | struct ocrdma_ah *ah = get_ocrdma_ah(wr->wr.ud.ah); |
| 1797 | |
| 1798 | ud_hdr->rsvd_dest_qpn = wr->wr.ud.remote_qpn; |
| 1799 | if (qp->qp_type == IB_QPT_GSI) |
| 1800 | ud_hdr->qkey = qp->qkey; |
| 1801 | else |
| 1802 | ud_hdr->qkey = wr->wr.ud.remote_qkey; |
| 1803 | ud_hdr->rsvd_ahid = ah->id; |
| 1804 | } |
| 1805 | |
| 1806 | static void ocrdma_build_sges(struct ocrdma_hdr_wqe *hdr, |
| 1807 | struct ocrdma_sge *sge, int num_sge, |
| 1808 | struct ib_sge *sg_list) |
| 1809 | { |
| 1810 | int i; |
| 1811 | |
| 1812 | for (i = 0; i < num_sge; i++) { |
| 1813 | sge[i].lrkey = sg_list[i].lkey; |
| 1814 | sge[i].addr_lo = sg_list[i].addr; |
| 1815 | sge[i].addr_hi = upper_32_bits(sg_list[i].addr); |
| 1816 | sge[i].len = sg_list[i].length; |
| 1817 | hdr->total_len += sg_list[i].length; |
| 1818 | } |
| 1819 | if (num_sge == 0) |
| 1820 | memset(sge, 0, sizeof(*sge)); |
| 1821 | } |
| 1822 | |
Naresh Gottumukkala | 117e6dd | 2013-08-26 15:27:48 +0530 | [diff] [blame] | 1823 | static inline uint32_t ocrdma_sglist_len(struct ib_sge *sg_list, int num_sge) |
| 1824 | { |
| 1825 | uint32_t total_len = 0, i; |
| 1826 | |
| 1827 | for (i = 0; i < num_sge; i++) |
| 1828 | total_len += sg_list[i].length; |
| 1829 | return total_len; |
| 1830 | } |
| 1831 | |
| 1832 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1833 | static int ocrdma_build_inline_sges(struct ocrdma_qp *qp, |
| 1834 | struct ocrdma_hdr_wqe *hdr, |
| 1835 | struct ocrdma_sge *sge, |
| 1836 | struct ib_send_wr *wr, u32 wqe_size) |
| 1837 | { |
Naresh Gottumukkala | 117e6dd | 2013-08-26 15:27:48 +0530 | [diff] [blame] | 1838 | int i; |
| 1839 | char *dpp_addr; |
| 1840 | |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1841 | if (wr->send_flags & IB_SEND_INLINE && qp->qp_type != IB_QPT_UD) { |
Naresh Gottumukkala | 117e6dd | 2013-08-26 15:27:48 +0530 | [diff] [blame] | 1842 | hdr->total_len = ocrdma_sglist_len(wr->sg_list, wr->num_sge); |
| 1843 | if (unlikely(hdr->total_len > qp->max_inline_data)) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1844 | pr_err("%s() supported_len=0x%x,\n" |
| 1845 | " unspported len req=0x%x\n", __func__, |
Naresh Gottumukkala | 117e6dd | 2013-08-26 15:27:48 +0530 | [diff] [blame] | 1846 | qp->max_inline_data, hdr->total_len); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1847 | return -EINVAL; |
| 1848 | } |
Naresh Gottumukkala | 117e6dd | 2013-08-26 15:27:48 +0530 | [diff] [blame] | 1849 | dpp_addr = (char *)sge; |
| 1850 | for (i = 0; i < wr->num_sge; i++) { |
| 1851 | memcpy(dpp_addr, |
| 1852 | (void *)(unsigned long)wr->sg_list[i].addr, |
| 1853 | wr->sg_list[i].length); |
| 1854 | dpp_addr += wr->sg_list[i].length; |
| 1855 | } |
| 1856 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1857 | wqe_size += roundup(hdr->total_len, OCRDMA_WQE_ALIGN_BYTES); |
Naresh Gottumukkala | 117e6dd | 2013-08-26 15:27:48 +0530 | [diff] [blame] | 1858 | if (0 == hdr->total_len) |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1859 | wqe_size += sizeof(struct ocrdma_sge); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1860 | hdr->cw |= (OCRDMA_TYPE_INLINE << OCRDMA_WQE_TYPE_SHIFT); |
| 1861 | } else { |
| 1862 | ocrdma_build_sges(hdr, sge, wr->num_sge, wr->sg_list); |
| 1863 | if (wr->num_sge) |
| 1864 | wqe_size += (wr->num_sge * sizeof(struct ocrdma_sge)); |
| 1865 | else |
| 1866 | wqe_size += sizeof(struct ocrdma_sge); |
| 1867 | hdr->cw |= (OCRDMA_TYPE_LKEY << OCRDMA_WQE_TYPE_SHIFT); |
| 1868 | } |
| 1869 | hdr->cw |= ((wqe_size / OCRDMA_WQE_STRIDE) << OCRDMA_WQE_SIZE_SHIFT); |
| 1870 | return 0; |
| 1871 | } |
| 1872 | |
| 1873 | static int ocrdma_build_send(struct ocrdma_qp *qp, struct ocrdma_hdr_wqe *hdr, |
| 1874 | struct ib_send_wr *wr) |
| 1875 | { |
| 1876 | int status; |
| 1877 | struct ocrdma_sge *sge; |
| 1878 | u32 wqe_size = sizeof(*hdr); |
| 1879 | |
| 1880 | if (qp->qp_type == IB_QPT_UD || qp->qp_type == IB_QPT_GSI) { |
| 1881 | ocrdma_build_ud_hdr(qp, hdr, wr); |
| 1882 | sge = (struct ocrdma_sge *)(hdr + 2); |
| 1883 | wqe_size += sizeof(struct ocrdma_ewqe_ud_hdr); |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 1884 | } else { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1885 | sge = (struct ocrdma_sge *)(hdr + 1); |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 1886 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1887 | |
| 1888 | status = ocrdma_build_inline_sges(qp, hdr, sge, wr, wqe_size); |
| 1889 | return status; |
| 1890 | } |
| 1891 | |
| 1892 | static int ocrdma_build_write(struct ocrdma_qp *qp, struct ocrdma_hdr_wqe *hdr, |
| 1893 | struct ib_send_wr *wr) |
| 1894 | { |
| 1895 | int status; |
| 1896 | struct ocrdma_sge *ext_rw = (struct ocrdma_sge *)(hdr + 1); |
| 1897 | struct ocrdma_sge *sge = ext_rw + 1; |
| 1898 | u32 wqe_size = sizeof(*hdr) + sizeof(*ext_rw); |
| 1899 | |
| 1900 | status = ocrdma_build_inline_sges(qp, hdr, sge, wr, wqe_size); |
| 1901 | if (status) |
| 1902 | return status; |
| 1903 | ext_rw->addr_lo = wr->wr.rdma.remote_addr; |
| 1904 | ext_rw->addr_hi = upper_32_bits(wr->wr.rdma.remote_addr); |
| 1905 | ext_rw->lrkey = wr->wr.rdma.rkey; |
| 1906 | ext_rw->len = hdr->total_len; |
| 1907 | return 0; |
| 1908 | } |
| 1909 | |
| 1910 | static void ocrdma_build_read(struct ocrdma_qp *qp, struct ocrdma_hdr_wqe *hdr, |
| 1911 | struct ib_send_wr *wr) |
| 1912 | { |
| 1913 | struct ocrdma_sge *ext_rw = (struct ocrdma_sge *)(hdr + 1); |
| 1914 | struct ocrdma_sge *sge = ext_rw + 1; |
| 1915 | u32 wqe_size = ((wr->num_sge + 1) * sizeof(struct ocrdma_sge)) + |
| 1916 | sizeof(struct ocrdma_hdr_wqe); |
| 1917 | |
| 1918 | ocrdma_build_sges(hdr, sge, wr->num_sge, wr->sg_list); |
| 1919 | hdr->cw |= ((wqe_size / OCRDMA_WQE_STRIDE) << OCRDMA_WQE_SIZE_SHIFT); |
| 1920 | hdr->cw |= (OCRDMA_READ << OCRDMA_WQE_OPCODE_SHIFT); |
| 1921 | hdr->cw |= (OCRDMA_TYPE_LKEY << OCRDMA_WQE_TYPE_SHIFT); |
| 1922 | |
| 1923 | ext_rw->addr_lo = wr->wr.rdma.remote_addr; |
| 1924 | ext_rw->addr_hi = upper_32_bits(wr->wr.rdma.remote_addr); |
| 1925 | ext_rw->lrkey = wr->wr.rdma.rkey; |
| 1926 | ext_rw->len = hdr->total_len; |
| 1927 | } |
| 1928 | |
Naresh Gottumukkala | 7c33880 | 2013-08-26 15:27:39 +0530 | [diff] [blame] | 1929 | static void build_frmr_pbes(struct ib_send_wr *wr, struct ocrdma_pbl *pbl_tbl, |
| 1930 | struct ocrdma_hw_mr *hwmr) |
| 1931 | { |
| 1932 | int i; |
| 1933 | u64 buf_addr = 0; |
| 1934 | int num_pbes; |
| 1935 | struct ocrdma_pbe *pbe; |
| 1936 | |
| 1937 | pbe = (struct ocrdma_pbe *)pbl_tbl->va; |
| 1938 | num_pbes = 0; |
| 1939 | |
| 1940 | /* go through the OS phy regions & fill hw pbe entries into pbls. */ |
| 1941 | for (i = 0; i < wr->wr.fast_reg.page_list_len; i++) { |
| 1942 | /* number of pbes can be more for one OS buf, when |
| 1943 | * buffers are of different sizes. |
| 1944 | * split the ib_buf to one or more pbes. |
| 1945 | */ |
| 1946 | buf_addr = wr->wr.fast_reg.page_list->page_list[i]; |
| 1947 | pbe->pa_lo = cpu_to_le32((u32) (buf_addr & PAGE_MASK)); |
| 1948 | pbe->pa_hi = cpu_to_le32((u32) upper_32_bits(buf_addr)); |
| 1949 | num_pbes += 1; |
| 1950 | pbe++; |
| 1951 | |
| 1952 | /* if the pbl is full storing the pbes, |
| 1953 | * move to next pbl. |
| 1954 | */ |
| 1955 | if (num_pbes == (hwmr->pbl_size/sizeof(u64))) { |
| 1956 | pbl_tbl++; |
| 1957 | pbe = (struct ocrdma_pbe *)pbl_tbl->va; |
| 1958 | } |
| 1959 | } |
| 1960 | return; |
| 1961 | } |
| 1962 | |
| 1963 | static int get_encoded_page_size(int pg_sz) |
| 1964 | { |
| 1965 | /* Max size is 256M 4096 << 16 */ |
| 1966 | int i = 0; |
| 1967 | for (; i < 17; i++) |
| 1968 | if (pg_sz == (4096 << i)) |
| 1969 | break; |
| 1970 | return i; |
| 1971 | } |
| 1972 | |
| 1973 | |
| 1974 | static int ocrdma_build_fr(struct ocrdma_qp *qp, struct ocrdma_hdr_wqe *hdr, |
| 1975 | struct ib_send_wr *wr) |
| 1976 | { |
| 1977 | u64 fbo; |
| 1978 | struct ocrdma_ewqe_fr *fast_reg = (struct ocrdma_ewqe_fr *)(hdr + 1); |
| 1979 | struct ocrdma_mr *mr; |
| 1980 | u32 wqe_size = sizeof(*fast_reg) + sizeof(*hdr); |
| 1981 | |
| 1982 | wqe_size = roundup(wqe_size, OCRDMA_WQE_ALIGN_BYTES); |
| 1983 | |
| 1984 | if ((wr->wr.fast_reg.page_list_len > |
| 1985 | qp->dev->attr.max_pages_per_frmr) || |
| 1986 | (wr->wr.fast_reg.length > 0xffffffffULL)) |
| 1987 | return -EINVAL; |
| 1988 | |
| 1989 | hdr->cw |= (OCRDMA_FR_MR << OCRDMA_WQE_OPCODE_SHIFT); |
| 1990 | hdr->cw |= ((wqe_size / OCRDMA_WQE_STRIDE) << OCRDMA_WQE_SIZE_SHIFT); |
| 1991 | |
| 1992 | if (wr->wr.fast_reg.page_list_len == 0) |
| 1993 | BUG(); |
| 1994 | if (wr->wr.fast_reg.access_flags & IB_ACCESS_LOCAL_WRITE) |
| 1995 | hdr->rsvd_lkey_flags |= OCRDMA_LKEY_FLAG_LOCAL_WR; |
| 1996 | if (wr->wr.fast_reg.access_flags & IB_ACCESS_REMOTE_WRITE) |
| 1997 | hdr->rsvd_lkey_flags |= OCRDMA_LKEY_FLAG_REMOTE_WR; |
| 1998 | if (wr->wr.fast_reg.access_flags & IB_ACCESS_REMOTE_READ) |
| 1999 | hdr->rsvd_lkey_flags |= OCRDMA_LKEY_FLAG_REMOTE_RD; |
| 2000 | hdr->lkey = wr->wr.fast_reg.rkey; |
| 2001 | hdr->total_len = wr->wr.fast_reg.length; |
| 2002 | |
| 2003 | fbo = wr->wr.fast_reg.iova_start - |
| 2004 | (wr->wr.fast_reg.page_list->page_list[0] & PAGE_MASK); |
| 2005 | |
| 2006 | fast_reg->va_hi = upper_32_bits(wr->wr.fast_reg.iova_start); |
| 2007 | fast_reg->va_lo = (u32) (wr->wr.fast_reg.iova_start & 0xffffffff); |
| 2008 | fast_reg->fbo_hi = upper_32_bits(fbo); |
| 2009 | fast_reg->fbo_lo = (u32) fbo & 0xffffffff; |
| 2010 | fast_reg->num_sges = wr->wr.fast_reg.page_list_len; |
| 2011 | fast_reg->size_sge = |
| 2012 | get_encoded_page_size(1 << wr->wr.fast_reg.page_shift); |
Roland Dreier | 33ccbd8 | 2013-09-03 09:00:08 -0700 | [diff] [blame] | 2013 | mr = (struct ocrdma_mr *) (unsigned long) qp->dev->stag_arr[(hdr->lkey >> 8) & |
Naresh Gottumukkala | 7c33880 | 2013-08-26 15:27:39 +0530 | [diff] [blame] | 2014 | (OCRDMA_MAX_STAG - 1)]; |
| 2015 | build_frmr_pbes(wr, mr->hwmr.pbl_table, &mr->hwmr); |
| 2016 | return 0; |
| 2017 | } |
| 2018 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2019 | static void ocrdma_ring_sq_db(struct ocrdma_qp *qp) |
| 2020 | { |
| 2021 | u32 val = qp->sq.dbid | (1 << 16); |
| 2022 | |
| 2023 | iowrite32(val, qp->sq_db); |
| 2024 | } |
| 2025 | |
| 2026 | int ocrdma_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, |
| 2027 | struct ib_send_wr **bad_wr) |
| 2028 | { |
| 2029 | int status = 0; |
| 2030 | struct ocrdma_qp *qp = get_ocrdma_qp(ibqp); |
| 2031 | struct ocrdma_hdr_wqe *hdr; |
| 2032 | unsigned long flags; |
| 2033 | |
| 2034 | spin_lock_irqsave(&qp->q_lock, flags); |
| 2035 | if (qp->state != OCRDMA_QPS_RTS && qp->state != OCRDMA_QPS_SQD) { |
| 2036 | spin_unlock_irqrestore(&qp->q_lock, flags); |
Naresh Gottumukkala | f6ddcf7 | 2013-06-10 04:42:40 +0000 | [diff] [blame] | 2037 | *bad_wr = wr; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2038 | return -EINVAL; |
| 2039 | } |
| 2040 | |
| 2041 | while (wr) { |
| 2042 | if (ocrdma_hwq_free_cnt(&qp->sq) == 0 || |
| 2043 | wr->num_sge > qp->sq.max_sges) { |
Naresh Gottumukkala | f6ddcf7 | 2013-06-10 04:42:40 +0000 | [diff] [blame] | 2044 | *bad_wr = wr; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2045 | status = -ENOMEM; |
| 2046 | break; |
| 2047 | } |
| 2048 | hdr = ocrdma_hwq_head(&qp->sq); |
| 2049 | hdr->cw = 0; |
Naresh Gottumukkala | 2b51a9b | 2013-08-26 15:27:43 +0530 | [diff] [blame] | 2050 | if (wr->send_flags & IB_SEND_SIGNALED || qp->signaled) |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2051 | hdr->cw |= (OCRDMA_FLAG_SIG << OCRDMA_WQE_FLAGS_SHIFT); |
| 2052 | if (wr->send_flags & IB_SEND_FENCE) |
| 2053 | hdr->cw |= |
| 2054 | (OCRDMA_FLAG_FENCE_L << OCRDMA_WQE_FLAGS_SHIFT); |
| 2055 | if (wr->send_flags & IB_SEND_SOLICITED) |
| 2056 | hdr->cw |= |
| 2057 | (OCRDMA_FLAG_SOLICIT << OCRDMA_WQE_FLAGS_SHIFT); |
| 2058 | hdr->total_len = 0; |
| 2059 | switch (wr->opcode) { |
| 2060 | case IB_WR_SEND_WITH_IMM: |
| 2061 | hdr->cw |= (OCRDMA_FLAG_IMM << OCRDMA_WQE_FLAGS_SHIFT); |
| 2062 | hdr->immdt = ntohl(wr->ex.imm_data); |
| 2063 | case IB_WR_SEND: |
| 2064 | hdr->cw |= (OCRDMA_SEND << OCRDMA_WQE_OPCODE_SHIFT); |
| 2065 | ocrdma_build_send(qp, hdr, wr); |
| 2066 | break; |
| 2067 | case IB_WR_SEND_WITH_INV: |
| 2068 | hdr->cw |= (OCRDMA_FLAG_INV << OCRDMA_WQE_FLAGS_SHIFT); |
| 2069 | hdr->cw |= (OCRDMA_SEND << OCRDMA_WQE_OPCODE_SHIFT); |
| 2070 | hdr->lkey = wr->ex.invalidate_rkey; |
| 2071 | status = ocrdma_build_send(qp, hdr, wr); |
| 2072 | break; |
| 2073 | case IB_WR_RDMA_WRITE_WITH_IMM: |
| 2074 | hdr->cw |= (OCRDMA_FLAG_IMM << OCRDMA_WQE_FLAGS_SHIFT); |
| 2075 | hdr->immdt = ntohl(wr->ex.imm_data); |
| 2076 | case IB_WR_RDMA_WRITE: |
| 2077 | hdr->cw |= (OCRDMA_WRITE << OCRDMA_WQE_OPCODE_SHIFT); |
| 2078 | status = ocrdma_build_write(qp, hdr, wr); |
| 2079 | break; |
| 2080 | case IB_WR_RDMA_READ_WITH_INV: |
| 2081 | hdr->cw |= (OCRDMA_FLAG_INV << OCRDMA_WQE_FLAGS_SHIFT); |
| 2082 | case IB_WR_RDMA_READ: |
| 2083 | ocrdma_build_read(qp, hdr, wr); |
| 2084 | break; |
| 2085 | case IB_WR_LOCAL_INV: |
| 2086 | hdr->cw |= |
| 2087 | (OCRDMA_LKEY_INV << OCRDMA_WQE_OPCODE_SHIFT); |
Naresh Gottumukkala | 7c33880 | 2013-08-26 15:27:39 +0530 | [diff] [blame] | 2088 | hdr->cw |= ((sizeof(struct ocrdma_hdr_wqe) + |
| 2089 | sizeof(struct ocrdma_sge)) / |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2090 | OCRDMA_WQE_STRIDE) << OCRDMA_WQE_SIZE_SHIFT; |
| 2091 | hdr->lkey = wr->ex.invalidate_rkey; |
| 2092 | break; |
Naresh Gottumukkala | 7c33880 | 2013-08-26 15:27:39 +0530 | [diff] [blame] | 2093 | case IB_WR_FAST_REG_MR: |
| 2094 | status = ocrdma_build_fr(qp, hdr, wr); |
| 2095 | break; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2096 | default: |
| 2097 | status = -EINVAL; |
| 2098 | break; |
| 2099 | } |
| 2100 | if (status) { |
| 2101 | *bad_wr = wr; |
| 2102 | break; |
| 2103 | } |
Naresh Gottumukkala | 2b51a9b | 2013-08-26 15:27:43 +0530 | [diff] [blame] | 2104 | if (wr->send_flags & IB_SEND_SIGNALED || qp->signaled) |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2105 | qp->wqe_wr_id_tbl[qp->sq.head].signaled = 1; |
| 2106 | else |
| 2107 | qp->wqe_wr_id_tbl[qp->sq.head].signaled = 0; |
| 2108 | qp->wqe_wr_id_tbl[qp->sq.head].wrid = wr->wr_id; |
| 2109 | ocrdma_cpu_to_le32(hdr, ((hdr->cw >> OCRDMA_WQE_SIZE_SHIFT) & |
| 2110 | OCRDMA_WQE_SIZE_MASK) * OCRDMA_WQE_STRIDE); |
| 2111 | /* make sure wqe is written before adapter can access it */ |
| 2112 | wmb(); |
| 2113 | /* inform hw to start processing it */ |
| 2114 | ocrdma_ring_sq_db(qp); |
| 2115 | |
| 2116 | /* update pointer, counter for next wr */ |
| 2117 | ocrdma_hwq_inc_head(&qp->sq); |
| 2118 | wr = wr->next; |
| 2119 | } |
| 2120 | spin_unlock_irqrestore(&qp->q_lock, flags); |
| 2121 | return status; |
| 2122 | } |
| 2123 | |
| 2124 | static void ocrdma_ring_rq_db(struct ocrdma_qp *qp) |
| 2125 | { |
Naresh Gottumukkala | df176ea | 2013-06-10 04:42:41 +0000 | [diff] [blame] | 2126 | u32 val = qp->rq.dbid | (1 << ocrdma_get_num_posted_shift(qp)); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2127 | |
Naresh Gottumukkala | 45e86b3 | 2013-08-07 12:52:37 +0530 | [diff] [blame] | 2128 | if (qp->state != OCRDMA_QPS_INIT) |
| 2129 | iowrite32(val, qp->rq_db); |
| 2130 | else |
| 2131 | qp->db_cache++; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2132 | } |
| 2133 | |
| 2134 | static void ocrdma_build_rqe(struct ocrdma_hdr_wqe *rqe, struct ib_recv_wr *wr, |
| 2135 | u16 tag) |
| 2136 | { |
| 2137 | u32 wqe_size = 0; |
| 2138 | struct ocrdma_sge *sge; |
| 2139 | if (wr->num_sge) |
| 2140 | wqe_size = (wr->num_sge * sizeof(*sge)) + sizeof(*rqe); |
| 2141 | else |
| 2142 | wqe_size = sizeof(*sge) + sizeof(*rqe); |
| 2143 | |
| 2144 | rqe->cw = ((wqe_size / OCRDMA_WQE_STRIDE) << |
| 2145 | OCRDMA_WQE_SIZE_SHIFT); |
| 2146 | rqe->cw |= (OCRDMA_FLAG_SIG << OCRDMA_WQE_FLAGS_SHIFT); |
| 2147 | rqe->cw |= (OCRDMA_TYPE_LKEY << OCRDMA_WQE_TYPE_SHIFT); |
| 2148 | rqe->total_len = 0; |
| 2149 | rqe->rsvd_tag = tag; |
| 2150 | sge = (struct ocrdma_sge *)(rqe + 1); |
| 2151 | ocrdma_build_sges(rqe, sge, wr->num_sge, wr->sg_list); |
| 2152 | ocrdma_cpu_to_le32(rqe, wqe_size); |
| 2153 | } |
| 2154 | |
| 2155 | int ocrdma_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr, |
| 2156 | struct ib_recv_wr **bad_wr) |
| 2157 | { |
| 2158 | int status = 0; |
| 2159 | unsigned long flags; |
| 2160 | struct ocrdma_qp *qp = get_ocrdma_qp(ibqp); |
| 2161 | struct ocrdma_hdr_wqe *rqe; |
| 2162 | |
| 2163 | spin_lock_irqsave(&qp->q_lock, flags); |
| 2164 | if (qp->state == OCRDMA_QPS_RST || qp->state == OCRDMA_QPS_ERR) { |
| 2165 | spin_unlock_irqrestore(&qp->q_lock, flags); |
| 2166 | *bad_wr = wr; |
| 2167 | return -EINVAL; |
| 2168 | } |
| 2169 | while (wr) { |
| 2170 | if (ocrdma_hwq_free_cnt(&qp->rq) == 0 || |
| 2171 | wr->num_sge > qp->rq.max_sges) { |
| 2172 | *bad_wr = wr; |
| 2173 | status = -ENOMEM; |
| 2174 | break; |
| 2175 | } |
| 2176 | rqe = ocrdma_hwq_head(&qp->rq); |
| 2177 | ocrdma_build_rqe(rqe, wr, 0); |
| 2178 | |
| 2179 | qp->rqe_wr_id_tbl[qp->rq.head] = wr->wr_id; |
| 2180 | /* make sure rqe is written before adapter can access it */ |
| 2181 | wmb(); |
| 2182 | |
| 2183 | /* inform hw to start processing it */ |
| 2184 | ocrdma_ring_rq_db(qp); |
| 2185 | |
| 2186 | /* update pointer, counter for next wr */ |
| 2187 | ocrdma_hwq_inc_head(&qp->rq); |
| 2188 | wr = wr->next; |
| 2189 | } |
| 2190 | spin_unlock_irqrestore(&qp->q_lock, flags); |
| 2191 | return status; |
| 2192 | } |
| 2193 | |
| 2194 | /* cqe for srq's rqe can potentially arrive out of order. |
| 2195 | * index gives the entry in the shadow table where to store |
| 2196 | * the wr_id. tag/index is returned in cqe to reference back |
| 2197 | * for a given rqe. |
| 2198 | */ |
| 2199 | static int ocrdma_srq_get_idx(struct ocrdma_srq *srq) |
| 2200 | { |
| 2201 | int row = 0; |
| 2202 | int indx = 0; |
| 2203 | |
| 2204 | for (row = 0; row < srq->bit_fields_len; row++) { |
| 2205 | if (srq->idx_bit_fields[row]) { |
| 2206 | indx = ffs(srq->idx_bit_fields[row]); |
| 2207 | indx = (row * 32) + (indx - 1); |
| 2208 | if (indx >= srq->rq.max_cnt) |
| 2209 | BUG(); |
| 2210 | ocrdma_srq_toggle_bit(srq, indx); |
| 2211 | break; |
| 2212 | } |
| 2213 | } |
| 2214 | |
| 2215 | if (row == srq->bit_fields_len) |
| 2216 | BUG(); |
| 2217 | return indx; |
| 2218 | } |
| 2219 | |
| 2220 | static void ocrdma_ring_srq_db(struct ocrdma_srq *srq) |
| 2221 | { |
| 2222 | u32 val = srq->rq.dbid | (1 << 16); |
| 2223 | |
| 2224 | iowrite32(val, srq->db + OCRDMA_DB_GEN2_SRQ_OFFSET); |
| 2225 | } |
| 2226 | |
| 2227 | int ocrdma_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr, |
| 2228 | struct ib_recv_wr **bad_wr) |
| 2229 | { |
| 2230 | int status = 0; |
| 2231 | unsigned long flags; |
| 2232 | struct ocrdma_srq *srq; |
| 2233 | struct ocrdma_hdr_wqe *rqe; |
| 2234 | u16 tag; |
| 2235 | |
| 2236 | srq = get_ocrdma_srq(ibsrq); |
| 2237 | |
| 2238 | spin_lock_irqsave(&srq->q_lock, flags); |
| 2239 | while (wr) { |
| 2240 | if (ocrdma_hwq_free_cnt(&srq->rq) == 0 || |
| 2241 | wr->num_sge > srq->rq.max_sges) { |
| 2242 | status = -ENOMEM; |
| 2243 | *bad_wr = wr; |
| 2244 | break; |
| 2245 | } |
| 2246 | tag = ocrdma_srq_get_idx(srq); |
| 2247 | rqe = ocrdma_hwq_head(&srq->rq); |
| 2248 | ocrdma_build_rqe(rqe, wr, tag); |
| 2249 | |
| 2250 | srq->rqe_wr_id_tbl[tag] = wr->wr_id; |
| 2251 | /* make sure rqe is written before adapter can perform DMA */ |
| 2252 | wmb(); |
| 2253 | /* inform hw to start processing it */ |
| 2254 | ocrdma_ring_srq_db(srq); |
| 2255 | /* update pointer, counter for next wr */ |
| 2256 | ocrdma_hwq_inc_head(&srq->rq); |
| 2257 | wr = wr->next; |
| 2258 | } |
| 2259 | spin_unlock_irqrestore(&srq->q_lock, flags); |
| 2260 | return status; |
| 2261 | } |
| 2262 | |
| 2263 | static enum ib_wc_status ocrdma_to_ibwc_err(u16 status) |
| 2264 | { |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 2265 | enum ib_wc_status ibwc_status; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2266 | |
| 2267 | switch (status) { |
| 2268 | case OCRDMA_CQE_GENERAL_ERR: |
| 2269 | ibwc_status = IB_WC_GENERAL_ERR; |
| 2270 | break; |
| 2271 | case OCRDMA_CQE_LOC_LEN_ERR: |
| 2272 | ibwc_status = IB_WC_LOC_LEN_ERR; |
| 2273 | break; |
| 2274 | case OCRDMA_CQE_LOC_QP_OP_ERR: |
| 2275 | ibwc_status = IB_WC_LOC_QP_OP_ERR; |
| 2276 | break; |
| 2277 | case OCRDMA_CQE_LOC_EEC_OP_ERR: |
| 2278 | ibwc_status = IB_WC_LOC_EEC_OP_ERR; |
| 2279 | break; |
| 2280 | case OCRDMA_CQE_LOC_PROT_ERR: |
| 2281 | ibwc_status = IB_WC_LOC_PROT_ERR; |
| 2282 | break; |
| 2283 | case OCRDMA_CQE_WR_FLUSH_ERR: |
| 2284 | ibwc_status = IB_WC_WR_FLUSH_ERR; |
| 2285 | break; |
| 2286 | case OCRDMA_CQE_MW_BIND_ERR: |
| 2287 | ibwc_status = IB_WC_MW_BIND_ERR; |
| 2288 | break; |
| 2289 | case OCRDMA_CQE_BAD_RESP_ERR: |
| 2290 | ibwc_status = IB_WC_BAD_RESP_ERR; |
| 2291 | break; |
| 2292 | case OCRDMA_CQE_LOC_ACCESS_ERR: |
| 2293 | ibwc_status = IB_WC_LOC_ACCESS_ERR; |
| 2294 | break; |
| 2295 | case OCRDMA_CQE_REM_INV_REQ_ERR: |
| 2296 | ibwc_status = IB_WC_REM_INV_REQ_ERR; |
| 2297 | break; |
| 2298 | case OCRDMA_CQE_REM_ACCESS_ERR: |
| 2299 | ibwc_status = IB_WC_REM_ACCESS_ERR; |
| 2300 | break; |
| 2301 | case OCRDMA_CQE_REM_OP_ERR: |
| 2302 | ibwc_status = IB_WC_REM_OP_ERR; |
| 2303 | break; |
| 2304 | case OCRDMA_CQE_RETRY_EXC_ERR: |
| 2305 | ibwc_status = IB_WC_RETRY_EXC_ERR; |
| 2306 | break; |
| 2307 | case OCRDMA_CQE_RNR_RETRY_EXC_ERR: |
| 2308 | ibwc_status = IB_WC_RNR_RETRY_EXC_ERR; |
| 2309 | break; |
| 2310 | case OCRDMA_CQE_LOC_RDD_VIOL_ERR: |
| 2311 | ibwc_status = IB_WC_LOC_RDD_VIOL_ERR; |
| 2312 | break; |
| 2313 | case OCRDMA_CQE_REM_INV_RD_REQ_ERR: |
| 2314 | ibwc_status = IB_WC_REM_INV_RD_REQ_ERR; |
| 2315 | break; |
| 2316 | case OCRDMA_CQE_REM_ABORT_ERR: |
| 2317 | ibwc_status = IB_WC_REM_ABORT_ERR; |
| 2318 | break; |
| 2319 | case OCRDMA_CQE_INV_EECN_ERR: |
| 2320 | ibwc_status = IB_WC_INV_EECN_ERR; |
| 2321 | break; |
| 2322 | case OCRDMA_CQE_INV_EEC_STATE_ERR: |
| 2323 | ibwc_status = IB_WC_INV_EEC_STATE_ERR; |
| 2324 | break; |
| 2325 | case OCRDMA_CQE_FATAL_ERR: |
| 2326 | ibwc_status = IB_WC_FATAL_ERR; |
| 2327 | break; |
| 2328 | case OCRDMA_CQE_RESP_TIMEOUT_ERR: |
| 2329 | ibwc_status = IB_WC_RESP_TIMEOUT_ERR; |
| 2330 | break; |
| 2331 | default: |
| 2332 | ibwc_status = IB_WC_GENERAL_ERR; |
| 2333 | break; |
Joe Perches | 2b50176d | 2013-10-08 16:07:22 -0700 | [diff] [blame^] | 2334 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2335 | return ibwc_status; |
| 2336 | } |
| 2337 | |
| 2338 | static void ocrdma_update_wc(struct ocrdma_qp *qp, struct ib_wc *ibwc, |
| 2339 | u32 wqe_idx) |
| 2340 | { |
| 2341 | struct ocrdma_hdr_wqe *hdr; |
| 2342 | struct ocrdma_sge *rw; |
| 2343 | int opcode; |
| 2344 | |
| 2345 | hdr = ocrdma_hwq_head_from_idx(&qp->sq, wqe_idx); |
| 2346 | |
| 2347 | ibwc->wr_id = qp->wqe_wr_id_tbl[wqe_idx].wrid; |
| 2348 | /* Undo the hdr->cw swap */ |
| 2349 | opcode = le32_to_cpu(hdr->cw) & OCRDMA_WQE_OPCODE_MASK; |
| 2350 | switch (opcode) { |
| 2351 | case OCRDMA_WRITE: |
| 2352 | ibwc->opcode = IB_WC_RDMA_WRITE; |
| 2353 | break; |
| 2354 | case OCRDMA_READ: |
| 2355 | rw = (struct ocrdma_sge *)(hdr + 1); |
| 2356 | ibwc->opcode = IB_WC_RDMA_READ; |
| 2357 | ibwc->byte_len = rw->len; |
| 2358 | break; |
| 2359 | case OCRDMA_SEND: |
| 2360 | ibwc->opcode = IB_WC_SEND; |
| 2361 | break; |
Naresh Gottumukkala | 7c33880 | 2013-08-26 15:27:39 +0530 | [diff] [blame] | 2362 | case OCRDMA_FR_MR: |
| 2363 | ibwc->opcode = IB_WC_FAST_REG_MR; |
| 2364 | break; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2365 | case OCRDMA_LKEY_INV: |
| 2366 | ibwc->opcode = IB_WC_LOCAL_INV; |
| 2367 | break; |
| 2368 | default: |
| 2369 | ibwc->status = IB_WC_GENERAL_ERR; |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 2370 | pr_err("%s() invalid opcode received = 0x%x\n", |
| 2371 | __func__, hdr->cw & OCRDMA_WQE_OPCODE_MASK); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2372 | break; |
Joe Perches | 2b50176d | 2013-10-08 16:07:22 -0700 | [diff] [blame^] | 2373 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2374 | } |
| 2375 | |
| 2376 | static void ocrdma_set_cqe_status_flushed(struct ocrdma_qp *qp, |
| 2377 | struct ocrdma_cqe *cqe) |
| 2378 | { |
| 2379 | if (is_cqe_for_sq(cqe)) { |
| 2380 | cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu( |
| 2381 | cqe->flags_status_srcqpn) & |
| 2382 | ~OCRDMA_CQE_STATUS_MASK); |
| 2383 | cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu( |
| 2384 | cqe->flags_status_srcqpn) | |
| 2385 | (OCRDMA_CQE_WR_FLUSH_ERR << |
| 2386 | OCRDMA_CQE_STATUS_SHIFT)); |
| 2387 | } else { |
| 2388 | if (qp->qp_type == IB_QPT_UD || qp->qp_type == IB_QPT_GSI) { |
| 2389 | cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu( |
| 2390 | cqe->flags_status_srcqpn) & |
| 2391 | ~OCRDMA_CQE_UD_STATUS_MASK); |
| 2392 | cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu( |
| 2393 | cqe->flags_status_srcqpn) | |
| 2394 | (OCRDMA_CQE_WR_FLUSH_ERR << |
| 2395 | OCRDMA_CQE_UD_STATUS_SHIFT)); |
| 2396 | } else { |
| 2397 | cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu( |
| 2398 | cqe->flags_status_srcqpn) & |
| 2399 | ~OCRDMA_CQE_STATUS_MASK); |
| 2400 | cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu( |
| 2401 | cqe->flags_status_srcqpn) | |
| 2402 | (OCRDMA_CQE_WR_FLUSH_ERR << |
| 2403 | OCRDMA_CQE_STATUS_SHIFT)); |
| 2404 | } |
| 2405 | } |
| 2406 | } |
| 2407 | |
| 2408 | static bool ocrdma_update_err_cqe(struct ib_wc *ibwc, struct ocrdma_cqe *cqe, |
| 2409 | struct ocrdma_qp *qp, int status) |
| 2410 | { |
| 2411 | bool expand = false; |
| 2412 | |
| 2413 | ibwc->byte_len = 0; |
| 2414 | ibwc->qp = &qp->ibqp; |
| 2415 | ibwc->status = ocrdma_to_ibwc_err(status); |
| 2416 | |
| 2417 | ocrdma_flush_qp(qp); |
Naresh Gottumukkala | 057729c | 2013-08-07 12:52:35 +0530 | [diff] [blame] | 2418 | ocrdma_qp_state_change(qp, IB_QPS_ERR, NULL); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2419 | |
| 2420 | /* if wqe/rqe pending for which cqe needs to be returned, |
| 2421 | * trigger inflating it. |
| 2422 | */ |
| 2423 | if (!is_hw_rq_empty(qp) || !is_hw_sq_empty(qp)) { |
| 2424 | expand = true; |
| 2425 | ocrdma_set_cqe_status_flushed(qp, cqe); |
| 2426 | } |
| 2427 | return expand; |
| 2428 | } |
| 2429 | |
| 2430 | static int ocrdma_update_err_rcqe(struct ib_wc *ibwc, struct ocrdma_cqe *cqe, |
| 2431 | struct ocrdma_qp *qp, int status) |
| 2432 | { |
| 2433 | ibwc->opcode = IB_WC_RECV; |
| 2434 | ibwc->wr_id = qp->rqe_wr_id_tbl[qp->rq.tail]; |
| 2435 | ocrdma_hwq_inc_tail(&qp->rq); |
| 2436 | |
| 2437 | return ocrdma_update_err_cqe(ibwc, cqe, qp, status); |
| 2438 | } |
| 2439 | |
| 2440 | static int ocrdma_update_err_scqe(struct ib_wc *ibwc, struct ocrdma_cqe *cqe, |
| 2441 | struct ocrdma_qp *qp, int status) |
| 2442 | { |
| 2443 | ocrdma_update_wc(qp, ibwc, qp->sq.tail); |
| 2444 | ocrdma_hwq_inc_tail(&qp->sq); |
| 2445 | |
| 2446 | return ocrdma_update_err_cqe(ibwc, cqe, qp, status); |
| 2447 | } |
| 2448 | |
| 2449 | |
| 2450 | static bool ocrdma_poll_err_scqe(struct ocrdma_qp *qp, |
| 2451 | struct ocrdma_cqe *cqe, struct ib_wc *ibwc, |
| 2452 | bool *polled, bool *stop) |
| 2453 | { |
| 2454 | bool expand; |
| 2455 | int status = (le32_to_cpu(cqe->flags_status_srcqpn) & |
| 2456 | OCRDMA_CQE_STATUS_MASK) >> OCRDMA_CQE_STATUS_SHIFT; |
| 2457 | |
| 2458 | /* when hw sq is empty, but rq is not empty, so we continue |
| 2459 | * to keep the cqe in order to get the cq event again. |
| 2460 | */ |
| 2461 | if (is_hw_sq_empty(qp) && !is_hw_rq_empty(qp)) { |
| 2462 | /* when cq for rq and sq is same, it is safe to return |
| 2463 | * flush cqe for RQEs. |
| 2464 | */ |
| 2465 | if (!qp->srq && (qp->sq_cq == qp->rq_cq)) { |
| 2466 | *polled = true; |
| 2467 | status = OCRDMA_CQE_WR_FLUSH_ERR; |
| 2468 | expand = ocrdma_update_err_rcqe(ibwc, cqe, qp, status); |
| 2469 | } else { |
| 2470 | /* stop processing further cqe as this cqe is used for |
| 2471 | * triggering cq event on buddy cq of RQ. |
| 2472 | * When QP is destroyed, this cqe will be removed |
| 2473 | * from the cq's hardware q. |
| 2474 | */ |
| 2475 | *polled = false; |
| 2476 | *stop = true; |
| 2477 | expand = false; |
| 2478 | } |
| 2479 | } else { |
| 2480 | *polled = true; |
| 2481 | expand = ocrdma_update_err_scqe(ibwc, cqe, qp, status); |
| 2482 | } |
| 2483 | return expand; |
| 2484 | } |
| 2485 | |
| 2486 | static bool ocrdma_poll_success_scqe(struct ocrdma_qp *qp, |
| 2487 | struct ocrdma_cqe *cqe, |
| 2488 | struct ib_wc *ibwc, bool *polled) |
| 2489 | { |
| 2490 | bool expand = false; |
| 2491 | int tail = qp->sq.tail; |
| 2492 | u32 wqe_idx; |
| 2493 | |
| 2494 | if (!qp->wqe_wr_id_tbl[tail].signaled) { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2495 | *polled = false; /* WC cannot be consumed yet */ |
| 2496 | } else { |
| 2497 | ibwc->status = IB_WC_SUCCESS; |
| 2498 | ibwc->wc_flags = 0; |
| 2499 | ibwc->qp = &qp->ibqp; |
| 2500 | ocrdma_update_wc(qp, ibwc, tail); |
| 2501 | *polled = true; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2502 | } |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 2503 | wqe_idx = (le32_to_cpu(cqe->wq.wqeidx) & |
| 2504 | OCRDMA_CQE_WQEIDX_MASK) & qp->sq.max_wqe_idx; |
Parav Pandit | ae3bca9 | 2012-08-17 14:45:33 +0000 | [diff] [blame] | 2505 | if (tail != wqe_idx) |
| 2506 | expand = true; /* Coalesced CQE can't be consumed yet */ |
| 2507 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2508 | ocrdma_hwq_inc_tail(&qp->sq); |
| 2509 | return expand; |
| 2510 | } |
| 2511 | |
| 2512 | static bool ocrdma_poll_scqe(struct ocrdma_qp *qp, struct ocrdma_cqe *cqe, |
| 2513 | struct ib_wc *ibwc, bool *polled, bool *stop) |
| 2514 | { |
| 2515 | int status; |
| 2516 | bool expand; |
| 2517 | |
| 2518 | status = (le32_to_cpu(cqe->flags_status_srcqpn) & |
| 2519 | OCRDMA_CQE_STATUS_MASK) >> OCRDMA_CQE_STATUS_SHIFT; |
| 2520 | |
| 2521 | if (status == OCRDMA_CQE_SUCCESS) |
| 2522 | expand = ocrdma_poll_success_scqe(qp, cqe, ibwc, polled); |
| 2523 | else |
| 2524 | expand = ocrdma_poll_err_scqe(qp, cqe, ibwc, polled, stop); |
| 2525 | return expand; |
| 2526 | } |
| 2527 | |
| 2528 | static int ocrdma_update_ud_rcqe(struct ib_wc *ibwc, struct ocrdma_cqe *cqe) |
| 2529 | { |
| 2530 | int status; |
| 2531 | |
| 2532 | status = (le32_to_cpu(cqe->flags_status_srcqpn) & |
| 2533 | OCRDMA_CQE_UD_STATUS_MASK) >> OCRDMA_CQE_UD_STATUS_SHIFT; |
| 2534 | ibwc->src_qp = le32_to_cpu(cqe->flags_status_srcqpn) & |
| 2535 | OCRDMA_CQE_SRCQP_MASK; |
| 2536 | ibwc->pkey_index = le32_to_cpu(cqe->ud.rxlen_pkey) & |
| 2537 | OCRDMA_CQE_PKEY_MASK; |
| 2538 | ibwc->wc_flags = IB_WC_GRH; |
| 2539 | ibwc->byte_len = (le32_to_cpu(cqe->ud.rxlen_pkey) >> |
| 2540 | OCRDMA_CQE_UD_XFER_LEN_SHIFT); |
| 2541 | return status; |
| 2542 | } |
| 2543 | |
| 2544 | static void ocrdma_update_free_srq_cqe(struct ib_wc *ibwc, |
| 2545 | struct ocrdma_cqe *cqe, |
| 2546 | struct ocrdma_qp *qp) |
| 2547 | { |
| 2548 | unsigned long flags; |
| 2549 | struct ocrdma_srq *srq; |
| 2550 | u32 wqe_idx; |
| 2551 | |
| 2552 | srq = get_ocrdma_srq(qp->ibqp.srq); |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 2553 | wqe_idx = (le32_to_cpu(cqe->rq.buftag_qpn) >> |
| 2554 | OCRDMA_CQE_BUFTAG_SHIFT) & srq->rq.max_wqe_idx; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2555 | ibwc->wr_id = srq->rqe_wr_id_tbl[wqe_idx]; |
| 2556 | spin_lock_irqsave(&srq->q_lock, flags); |
| 2557 | ocrdma_srq_toggle_bit(srq, wqe_idx); |
| 2558 | spin_unlock_irqrestore(&srq->q_lock, flags); |
| 2559 | ocrdma_hwq_inc_tail(&srq->rq); |
| 2560 | } |
| 2561 | |
| 2562 | static bool ocrdma_poll_err_rcqe(struct ocrdma_qp *qp, struct ocrdma_cqe *cqe, |
| 2563 | struct ib_wc *ibwc, bool *polled, bool *stop, |
| 2564 | int status) |
| 2565 | { |
| 2566 | bool expand; |
| 2567 | |
| 2568 | /* when hw_rq is empty, but wq is not empty, so continue |
| 2569 | * to keep the cqe to get the cq event again. |
| 2570 | */ |
| 2571 | if (is_hw_rq_empty(qp) && !is_hw_sq_empty(qp)) { |
| 2572 | if (!qp->srq && (qp->sq_cq == qp->rq_cq)) { |
| 2573 | *polled = true; |
| 2574 | status = OCRDMA_CQE_WR_FLUSH_ERR; |
| 2575 | expand = ocrdma_update_err_scqe(ibwc, cqe, qp, status); |
| 2576 | } else { |
| 2577 | *polled = false; |
| 2578 | *stop = true; |
| 2579 | expand = false; |
| 2580 | } |
Parav Pandit | a3698a9 | 2012-06-11 16:39:20 +0530 | [diff] [blame] | 2581 | } else { |
| 2582 | *polled = true; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2583 | expand = ocrdma_update_err_rcqe(ibwc, cqe, qp, status); |
Parav Pandit | a3698a9 | 2012-06-11 16:39:20 +0530 | [diff] [blame] | 2584 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2585 | return expand; |
| 2586 | } |
| 2587 | |
| 2588 | static void ocrdma_poll_success_rcqe(struct ocrdma_qp *qp, |
| 2589 | struct ocrdma_cqe *cqe, struct ib_wc *ibwc) |
| 2590 | { |
| 2591 | ibwc->opcode = IB_WC_RECV; |
| 2592 | ibwc->qp = &qp->ibqp; |
| 2593 | ibwc->status = IB_WC_SUCCESS; |
| 2594 | |
| 2595 | if (qp->qp_type == IB_QPT_UD || qp->qp_type == IB_QPT_GSI) |
| 2596 | ocrdma_update_ud_rcqe(ibwc, cqe); |
| 2597 | else |
| 2598 | ibwc->byte_len = le32_to_cpu(cqe->rq.rxlen); |
| 2599 | |
| 2600 | if (is_cqe_imm(cqe)) { |
| 2601 | ibwc->ex.imm_data = htonl(le32_to_cpu(cqe->rq.lkey_immdt)); |
| 2602 | ibwc->wc_flags |= IB_WC_WITH_IMM; |
| 2603 | } else if (is_cqe_wr_imm(cqe)) { |
| 2604 | ibwc->opcode = IB_WC_RECV_RDMA_WITH_IMM; |
| 2605 | ibwc->ex.imm_data = htonl(le32_to_cpu(cqe->rq.lkey_immdt)); |
| 2606 | ibwc->wc_flags |= IB_WC_WITH_IMM; |
| 2607 | } else if (is_cqe_invalidated(cqe)) { |
| 2608 | ibwc->ex.invalidate_rkey = le32_to_cpu(cqe->rq.lkey_immdt); |
| 2609 | ibwc->wc_flags |= IB_WC_WITH_INVALIDATE; |
| 2610 | } |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 2611 | if (qp->ibqp.srq) { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2612 | ocrdma_update_free_srq_cqe(ibwc, cqe, qp); |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 2613 | } else { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2614 | ibwc->wr_id = qp->rqe_wr_id_tbl[qp->rq.tail]; |
| 2615 | ocrdma_hwq_inc_tail(&qp->rq); |
| 2616 | } |
| 2617 | } |
| 2618 | |
| 2619 | static bool ocrdma_poll_rcqe(struct ocrdma_qp *qp, struct ocrdma_cqe *cqe, |
| 2620 | struct ib_wc *ibwc, bool *polled, bool *stop) |
| 2621 | { |
| 2622 | int status; |
| 2623 | bool expand = false; |
| 2624 | |
| 2625 | ibwc->wc_flags = 0; |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 2626 | if (qp->qp_type == IB_QPT_UD || qp->qp_type == IB_QPT_GSI) { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2627 | status = (le32_to_cpu(cqe->flags_status_srcqpn) & |
| 2628 | OCRDMA_CQE_UD_STATUS_MASK) >> |
| 2629 | OCRDMA_CQE_UD_STATUS_SHIFT; |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 2630 | } else { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2631 | status = (le32_to_cpu(cqe->flags_status_srcqpn) & |
| 2632 | OCRDMA_CQE_STATUS_MASK) >> OCRDMA_CQE_STATUS_SHIFT; |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 2633 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2634 | |
| 2635 | if (status == OCRDMA_CQE_SUCCESS) { |
| 2636 | *polled = true; |
| 2637 | ocrdma_poll_success_rcqe(qp, cqe, ibwc); |
| 2638 | } else { |
| 2639 | expand = ocrdma_poll_err_rcqe(qp, cqe, ibwc, polled, stop, |
| 2640 | status); |
| 2641 | } |
| 2642 | return expand; |
| 2643 | } |
| 2644 | |
| 2645 | static void ocrdma_change_cq_phase(struct ocrdma_cq *cq, struct ocrdma_cqe *cqe, |
| 2646 | u16 cur_getp) |
| 2647 | { |
| 2648 | if (cq->phase_change) { |
| 2649 | if (cur_getp == 0) |
| 2650 | cq->phase = (~cq->phase & OCRDMA_CQE_VALID); |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 2651 | } else { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2652 | /* clear valid bit */ |
| 2653 | cqe->flags_status_srcqpn = 0; |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 2654 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2655 | } |
| 2656 | |
| 2657 | static int ocrdma_poll_hwcq(struct ocrdma_cq *cq, int num_entries, |
| 2658 | struct ib_wc *ibwc) |
| 2659 | { |
| 2660 | u16 qpn = 0; |
| 2661 | int i = 0; |
| 2662 | bool expand = false; |
| 2663 | int polled_hw_cqes = 0; |
| 2664 | struct ocrdma_qp *qp = NULL; |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 2665 | struct ocrdma_dev *dev = get_ocrdma_dev(cq->ibcq.device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2666 | struct ocrdma_cqe *cqe; |
| 2667 | u16 cur_getp; bool polled = false; bool stop = false; |
| 2668 | |
| 2669 | cur_getp = cq->getp; |
| 2670 | while (num_entries) { |
| 2671 | cqe = cq->va + cur_getp; |
| 2672 | /* check whether valid cqe or not */ |
| 2673 | if (!is_cqe_valid(cq, cqe)) |
| 2674 | break; |
| 2675 | qpn = (le32_to_cpu(cqe->cmn.qpn) & OCRDMA_CQE_QPN_MASK); |
| 2676 | /* ignore discarded cqe */ |
| 2677 | if (qpn == 0) |
| 2678 | goto skip_cqe; |
| 2679 | qp = dev->qp_tbl[qpn]; |
| 2680 | BUG_ON(qp == NULL); |
| 2681 | |
| 2682 | if (is_cqe_for_sq(cqe)) { |
| 2683 | expand = ocrdma_poll_scqe(qp, cqe, ibwc, &polled, |
| 2684 | &stop); |
| 2685 | } else { |
| 2686 | expand = ocrdma_poll_rcqe(qp, cqe, ibwc, &polled, |
| 2687 | &stop); |
| 2688 | } |
| 2689 | if (expand) |
| 2690 | goto expand_cqe; |
| 2691 | if (stop) |
| 2692 | goto stop_cqe; |
| 2693 | /* clear qpn to avoid duplicate processing by discard_cqe() */ |
| 2694 | cqe->cmn.qpn = 0; |
| 2695 | skip_cqe: |
| 2696 | polled_hw_cqes += 1; |
| 2697 | cur_getp = (cur_getp + 1) % cq->max_hw_cqe; |
| 2698 | ocrdma_change_cq_phase(cq, cqe, cur_getp); |
| 2699 | expand_cqe: |
| 2700 | if (polled) { |
| 2701 | num_entries -= 1; |
| 2702 | i += 1; |
| 2703 | ibwc = ibwc + 1; |
| 2704 | polled = false; |
| 2705 | } |
| 2706 | } |
| 2707 | stop_cqe: |
| 2708 | cq->getp = cur_getp; |
| 2709 | if (polled_hw_cqes || expand || stop) { |
| 2710 | ocrdma_ring_cq_db(dev, cq->id, cq->armed, cq->solicited, |
| 2711 | polled_hw_cqes); |
| 2712 | } |
| 2713 | return i; |
| 2714 | } |
| 2715 | |
| 2716 | /* insert error cqe if the QP's SQ or RQ's CQ matches the CQ under poll. */ |
| 2717 | static int ocrdma_add_err_cqe(struct ocrdma_cq *cq, int num_entries, |
| 2718 | struct ocrdma_qp *qp, struct ib_wc *ibwc) |
| 2719 | { |
| 2720 | int err_cqes = 0; |
| 2721 | |
| 2722 | while (num_entries) { |
| 2723 | if (is_hw_sq_empty(qp) && is_hw_rq_empty(qp)) |
| 2724 | break; |
| 2725 | if (!is_hw_sq_empty(qp) && qp->sq_cq == cq) { |
| 2726 | ocrdma_update_wc(qp, ibwc, qp->sq.tail); |
| 2727 | ocrdma_hwq_inc_tail(&qp->sq); |
| 2728 | } else if (!is_hw_rq_empty(qp) && qp->rq_cq == cq) { |
| 2729 | ibwc->wr_id = qp->rqe_wr_id_tbl[qp->rq.tail]; |
| 2730 | ocrdma_hwq_inc_tail(&qp->rq); |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 2731 | } else { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2732 | return err_cqes; |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 2733 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2734 | ibwc->byte_len = 0; |
| 2735 | ibwc->status = IB_WC_WR_FLUSH_ERR; |
| 2736 | ibwc = ibwc + 1; |
| 2737 | err_cqes += 1; |
| 2738 | num_entries -= 1; |
| 2739 | } |
| 2740 | return err_cqes; |
| 2741 | } |
| 2742 | |
| 2743 | int ocrdma_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc) |
| 2744 | { |
| 2745 | int cqes_to_poll = num_entries; |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 2746 | struct ocrdma_cq *cq = get_ocrdma_cq(ibcq); |
| 2747 | struct ocrdma_dev *dev = get_ocrdma_dev(ibcq->device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2748 | int num_os_cqe = 0, err_cqes = 0; |
| 2749 | struct ocrdma_qp *qp; |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 2750 | unsigned long flags; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2751 | |
| 2752 | /* poll cqes from adapter CQ */ |
| 2753 | spin_lock_irqsave(&cq->cq_lock, flags); |
| 2754 | num_os_cqe = ocrdma_poll_hwcq(cq, cqes_to_poll, wc); |
| 2755 | spin_unlock_irqrestore(&cq->cq_lock, flags); |
| 2756 | cqes_to_poll -= num_os_cqe; |
| 2757 | |
| 2758 | if (cqes_to_poll) { |
| 2759 | wc = wc + num_os_cqe; |
| 2760 | /* adapter returns single error cqe when qp moves to |
| 2761 | * error state. So insert error cqes with wc_status as |
| 2762 | * FLUSHED for pending WQEs and RQEs of QP's SQ and RQ |
| 2763 | * respectively which uses this CQ. |
| 2764 | */ |
| 2765 | spin_lock_irqsave(&dev->flush_q_lock, flags); |
| 2766 | list_for_each_entry(qp, &cq->sq_head, sq_entry) { |
| 2767 | if (cqes_to_poll == 0) |
| 2768 | break; |
| 2769 | err_cqes = ocrdma_add_err_cqe(cq, cqes_to_poll, qp, wc); |
| 2770 | cqes_to_poll -= err_cqes; |
| 2771 | num_os_cqe += err_cqes; |
| 2772 | wc = wc + err_cqes; |
| 2773 | } |
| 2774 | spin_unlock_irqrestore(&dev->flush_q_lock, flags); |
| 2775 | } |
| 2776 | return num_os_cqe; |
| 2777 | } |
| 2778 | |
| 2779 | int ocrdma_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags cq_flags) |
| 2780 | { |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 2781 | struct ocrdma_cq *cq = get_ocrdma_cq(ibcq); |
| 2782 | struct ocrdma_dev *dev = get_ocrdma_dev(ibcq->device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2783 | u16 cq_id; |
| 2784 | u16 cur_getp; |
| 2785 | struct ocrdma_cqe *cqe; |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 2786 | unsigned long flags; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2787 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2788 | cq_id = cq->id; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2789 | |
| 2790 | spin_lock_irqsave(&cq->cq_lock, flags); |
| 2791 | if (cq_flags & IB_CQ_NEXT_COMP || cq_flags & IB_CQ_SOLICITED) |
| 2792 | cq->armed = true; |
| 2793 | if (cq_flags & IB_CQ_SOLICITED) |
| 2794 | cq->solicited = true; |
| 2795 | |
| 2796 | cur_getp = cq->getp; |
| 2797 | cqe = cq->va + cur_getp; |
| 2798 | |
| 2799 | /* check whether any valid cqe exist or not, if not then safe to |
| 2800 | * arm. If cqe is not yet consumed, then let it get consumed and then |
| 2801 | * we arm it to avoid false interrupts. |
| 2802 | */ |
| 2803 | if (!is_cqe_valid(cq, cqe) || cq->arm_needed) { |
| 2804 | cq->arm_needed = false; |
| 2805 | ocrdma_ring_cq_db(dev, cq_id, cq->armed, cq->solicited, 0); |
| 2806 | } |
| 2807 | spin_unlock_irqrestore(&cq->cq_lock, flags); |
| 2808 | return 0; |
| 2809 | } |
Naresh Gottumukkala | 7c33880 | 2013-08-26 15:27:39 +0530 | [diff] [blame] | 2810 | |
| 2811 | struct ib_mr *ocrdma_alloc_frmr(struct ib_pd *ibpd, int max_page_list_len) |
| 2812 | { |
| 2813 | int status; |
| 2814 | struct ocrdma_mr *mr; |
| 2815 | struct ocrdma_pd *pd = get_ocrdma_pd(ibpd); |
| 2816 | struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device); |
| 2817 | |
| 2818 | if (max_page_list_len > dev->attr.max_pages_per_frmr) |
| 2819 | return ERR_PTR(-EINVAL); |
| 2820 | |
| 2821 | mr = kzalloc(sizeof(*mr), GFP_KERNEL); |
| 2822 | if (!mr) |
| 2823 | return ERR_PTR(-ENOMEM); |
| 2824 | |
| 2825 | status = ocrdma_get_pbl_info(dev, mr, max_page_list_len); |
| 2826 | if (status) |
| 2827 | goto pbl_err; |
| 2828 | mr->hwmr.fr_mr = 1; |
| 2829 | mr->hwmr.remote_rd = 0; |
| 2830 | mr->hwmr.remote_wr = 0; |
| 2831 | mr->hwmr.local_rd = 0; |
| 2832 | mr->hwmr.local_wr = 0; |
| 2833 | mr->hwmr.mw_bind = 0; |
| 2834 | status = ocrdma_build_pbl_tbl(dev, &mr->hwmr); |
| 2835 | if (status) |
| 2836 | goto pbl_err; |
| 2837 | status = ocrdma_reg_mr(dev, &mr->hwmr, pd->id, 0); |
| 2838 | if (status) |
| 2839 | goto mbx_err; |
| 2840 | mr->ibmr.rkey = mr->hwmr.lkey; |
| 2841 | mr->ibmr.lkey = mr->hwmr.lkey; |
Roland Dreier | 33ccbd8 | 2013-09-03 09:00:08 -0700 | [diff] [blame] | 2842 | dev->stag_arr[(mr->hwmr.lkey >> 8) & (OCRDMA_MAX_STAG - 1)] = (unsigned long) mr; |
Naresh Gottumukkala | 7c33880 | 2013-08-26 15:27:39 +0530 | [diff] [blame] | 2843 | return &mr->ibmr; |
| 2844 | mbx_err: |
| 2845 | ocrdma_free_mr_pbl_tbl(dev, &mr->hwmr); |
| 2846 | pbl_err: |
| 2847 | kfree(mr); |
| 2848 | return ERR_PTR(-ENOMEM); |
| 2849 | } |
| 2850 | |
| 2851 | struct ib_fast_reg_page_list *ocrdma_alloc_frmr_page_list(struct ib_device |
| 2852 | *ibdev, |
| 2853 | int page_list_len) |
| 2854 | { |
| 2855 | struct ib_fast_reg_page_list *frmr_list; |
| 2856 | int size; |
| 2857 | |
| 2858 | size = sizeof(*frmr_list) + (page_list_len * sizeof(u64)); |
| 2859 | frmr_list = kzalloc(size, GFP_KERNEL); |
| 2860 | if (!frmr_list) |
| 2861 | return ERR_PTR(-ENOMEM); |
| 2862 | frmr_list->page_list = (u64 *)(frmr_list + 1); |
| 2863 | return frmr_list; |
| 2864 | } |
| 2865 | |
| 2866 | void ocrdma_free_frmr_page_list(struct ib_fast_reg_page_list *page_list) |
| 2867 | { |
| 2868 | kfree(page_list); |
| 2869 | } |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 2870 | |
| 2871 | #define MAX_KERNEL_PBE_SIZE 65536 |
| 2872 | static inline int count_kernel_pbes(struct ib_phys_buf *buf_list, |
| 2873 | int buf_cnt, u32 *pbe_size) |
| 2874 | { |
| 2875 | u64 total_size = 0; |
| 2876 | u64 buf_size = 0; |
| 2877 | int i; |
| 2878 | *pbe_size = roundup(buf_list[0].size, PAGE_SIZE); |
| 2879 | *pbe_size = roundup_pow_of_two(*pbe_size); |
| 2880 | |
| 2881 | /* find the smallest PBE size that we can have */ |
| 2882 | for (i = 0; i < buf_cnt; i++) { |
| 2883 | /* first addr may not be page aligned, so ignore checking */ |
| 2884 | if ((i != 0) && ((buf_list[i].addr & ~PAGE_MASK) || |
| 2885 | (buf_list[i].size & ~PAGE_MASK))) { |
| 2886 | return 0; |
| 2887 | } |
| 2888 | |
| 2889 | /* if configured PBE size is greater then the chosen one, |
| 2890 | * reduce the PBE size. |
| 2891 | */ |
| 2892 | buf_size = roundup(buf_list[i].size, PAGE_SIZE); |
| 2893 | /* pbe_size has to be even multiple of 4K 1,2,4,8...*/ |
| 2894 | buf_size = roundup_pow_of_two(buf_size); |
| 2895 | if (*pbe_size > buf_size) |
| 2896 | *pbe_size = buf_size; |
| 2897 | |
| 2898 | total_size += buf_size; |
| 2899 | } |
| 2900 | *pbe_size = *pbe_size > MAX_KERNEL_PBE_SIZE ? |
| 2901 | (MAX_KERNEL_PBE_SIZE) : (*pbe_size); |
| 2902 | |
| 2903 | /* num_pbes = total_size / (*pbe_size); this is implemented below. */ |
| 2904 | |
| 2905 | return total_size >> ilog2(*pbe_size); |
| 2906 | } |
| 2907 | |
| 2908 | static void build_kernel_pbes(struct ib_phys_buf *buf_list, int ib_buf_cnt, |
| 2909 | u32 pbe_size, struct ocrdma_pbl *pbl_tbl, |
| 2910 | struct ocrdma_hw_mr *hwmr) |
| 2911 | { |
| 2912 | int i; |
| 2913 | int idx; |
| 2914 | int pbes_per_buf = 0; |
| 2915 | u64 buf_addr = 0; |
| 2916 | int num_pbes; |
| 2917 | struct ocrdma_pbe *pbe; |
| 2918 | int total_num_pbes = 0; |
| 2919 | |
| 2920 | if (!hwmr->num_pbes) |
| 2921 | return; |
| 2922 | |
| 2923 | pbe = (struct ocrdma_pbe *)pbl_tbl->va; |
| 2924 | num_pbes = 0; |
| 2925 | |
| 2926 | /* go through the OS phy regions & fill hw pbe entries into pbls. */ |
| 2927 | for (i = 0; i < ib_buf_cnt; i++) { |
| 2928 | buf_addr = buf_list[i].addr; |
| 2929 | pbes_per_buf = |
| 2930 | roundup_pow_of_two(roundup(buf_list[i].size, PAGE_SIZE)) / |
| 2931 | pbe_size; |
| 2932 | hwmr->len += buf_list[i].size; |
| 2933 | /* number of pbes can be more for one OS buf, when |
| 2934 | * buffers are of different sizes. |
| 2935 | * split the ib_buf to one or more pbes. |
| 2936 | */ |
| 2937 | for (idx = 0; idx < pbes_per_buf; idx++) { |
| 2938 | /* we program always page aligned addresses, |
| 2939 | * first unaligned address is taken care by fbo. |
| 2940 | */ |
| 2941 | if (i == 0) { |
| 2942 | /* for non zero fbo, assign the |
| 2943 | * start of the page. |
| 2944 | */ |
| 2945 | pbe->pa_lo = |
| 2946 | cpu_to_le32((u32) (buf_addr & PAGE_MASK)); |
| 2947 | pbe->pa_hi = |
| 2948 | cpu_to_le32((u32) upper_32_bits(buf_addr)); |
| 2949 | } else { |
| 2950 | pbe->pa_lo = |
| 2951 | cpu_to_le32((u32) (buf_addr & 0xffffffff)); |
| 2952 | pbe->pa_hi = |
| 2953 | cpu_to_le32((u32) upper_32_bits(buf_addr)); |
| 2954 | } |
| 2955 | buf_addr += pbe_size; |
| 2956 | num_pbes += 1; |
| 2957 | total_num_pbes += 1; |
| 2958 | pbe++; |
| 2959 | |
| 2960 | if (total_num_pbes == hwmr->num_pbes) |
| 2961 | goto mr_tbl_done; |
| 2962 | /* if the pbl is full storing the pbes, |
| 2963 | * move to next pbl. |
| 2964 | */ |
| 2965 | if (num_pbes == (hwmr->pbl_size/sizeof(u64))) { |
| 2966 | pbl_tbl++; |
| 2967 | pbe = (struct ocrdma_pbe *)pbl_tbl->va; |
| 2968 | num_pbes = 0; |
| 2969 | } |
| 2970 | } |
| 2971 | } |
| 2972 | mr_tbl_done: |
| 2973 | return; |
| 2974 | } |
| 2975 | |
| 2976 | struct ib_mr *ocrdma_reg_kernel_mr(struct ib_pd *ibpd, |
| 2977 | struct ib_phys_buf *buf_list, |
| 2978 | int buf_cnt, int acc, u64 *iova_start) |
| 2979 | { |
| 2980 | int status = -ENOMEM; |
| 2981 | struct ocrdma_mr *mr; |
| 2982 | struct ocrdma_pd *pd = get_ocrdma_pd(ibpd); |
| 2983 | struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device); |
| 2984 | u32 num_pbes; |
| 2985 | u32 pbe_size = 0; |
| 2986 | |
| 2987 | if ((acc & IB_ACCESS_REMOTE_WRITE) && !(acc & IB_ACCESS_LOCAL_WRITE)) |
| 2988 | return ERR_PTR(-EINVAL); |
| 2989 | |
| 2990 | mr = kzalloc(sizeof(*mr), GFP_KERNEL); |
| 2991 | if (!mr) |
| 2992 | return ERR_PTR(status); |
| 2993 | |
| 2994 | num_pbes = count_kernel_pbes(buf_list, buf_cnt, &pbe_size); |
| 2995 | if (num_pbes == 0) { |
| 2996 | status = -EINVAL; |
| 2997 | goto pbl_err; |
| 2998 | } |
| 2999 | status = ocrdma_get_pbl_info(dev, mr, num_pbes); |
| 3000 | if (status) |
| 3001 | goto pbl_err; |
| 3002 | |
| 3003 | mr->hwmr.pbe_size = pbe_size; |
| 3004 | mr->hwmr.fbo = *iova_start - (buf_list[0].addr & PAGE_MASK); |
| 3005 | mr->hwmr.va = *iova_start; |
| 3006 | mr->hwmr.local_rd = 1; |
| 3007 | mr->hwmr.remote_wr = (acc & IB_ACCESS_REMOTE_WRITE) ? 1 : 0; |
| 3008 | mr->hwmr.remote_rd = (acc & IB_ACCESS_REMOTE_READ) ? 1 : 0; |
| 3009 | mr->hwmr.local_wr = (acc & IB_ACCESS_LOCAL_WRITE) ? 1 : 0; |
| 3010 | mr->hwmr.remote_atomic = (acc & IB_ACCESS_REMOTE_ATOMIC) ? 1 : 0; |
| 3011 | mr->hwmr.mw_bind = (acc & IB_ACCESS_MW_BIND) ? 1 : 0; |
| 3012 | |
| 3013 | status = ocrdma_build_pbl_tbl(dev, &mr->hwmr); |
| 3014 | if (status) |
| 3015 | goto pbl_err; |
| 3016 | build_kernel_pbes(buf_list, buf_cnt, pbe_size, mr->hwmr.pbl_table, |
| 3017 | &mr->hwmr); |
| 3018 | status = ocrdma_reg_mr(dev, &mr->hwmr, pd->id, acc); |
| 3019 | if (status) |
| 3020 | goto mbx_err; |
| 3021 | |
| 3022 | mr->ibmr.lkey = mr->hwmr.lkey; |
| 3023 | if (mr->hwmr.remote_wr || mr->hwmr.remote_rd) |
| 3024 | mr->ibmr.rkey = mr->hwmr.lkey; |
| 3025 | return &mr->ibmr; |
| 3026 | |
| 3027 | mbx_err: |
| 3028 | ocrdma_free_mr_pbl_tbl(dev, &mr->hwmr); |
| 3029 | pbl_err: |
| 3030 | kfree(mr); |
| 3031 | return ERR_PTR(status); |
| 3032 | } |