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 | 59a39ca | 2015-02-16 13:01:36 +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); |
Mitesh Ahuja | 033edd4 | 2014-06-10 19:32:22 +0530 | [diff] [blame] | 72 | attr->max_mr_size = dev->attr.max_mr_size; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 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; |
Mitesh Ahuja | 96c51ab | 2014-07-02 11:36:06 +0530 | [diff] [blame] | 76 | attr->hw_ver = dev->asic_id; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 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; |
Selvin Xavier | ac578ae | 2014-02-04 11:57:04 +0530 | [diff] [blame] | 92 | attr->max_mw = dev->attr.max_mw; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 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; |
Devesh Sharma | d6a488f | 2014-06-09 10:52:37 +0530 | [diff] [blame] | 104 | attr->max_fast_reg_page_list_len = dev->attr.max_pages_per_frmr; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 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 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 147 | int ocrdma_query_port(struct ib_device *ibdev, |
| 148 | u8 port, struct ib_port_attr *props) |
| 149 | { |
| 150 | enum ib_port_state port_state; |
| 151 | struct ocrdma_dev *dev; |
| 152 | struct net_device *netdev; |
| 153 | |
| 154 | dev = get_ocrdma_dev(ibdev); |
| 155 | if (port > 1) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 156 | pr_err("%s(%d) invalid_port=0x%x\n", __func__, |
| 157 | dev->id, port); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 158 | return -EINVAL; |
| 159 | } |
| 160 | netdev = dev->nic_info.netdev; |
| 161 | if (netif_running(netdev) && netif_oper_up(netdev)) { |
| 162 | port_state = IB_PORT_ACTIVE; |
| 163 | props->phys_state = 5; |
| 164 | } else { |
| 165 | port_state = IB_PORT_DOWN; |
| 166 | props->phys_state = 3; |
| 167 | } |
| 168 | props->max_mtu = IB_MTU_4096; |
| 169 | props->active_mtu = iboe_get_mtu(netdev->mtu); |
| 170 | props->lid = 0; |
| 171 | props->lmc = 0; |
| 172 | props->sm_lid = 0; |
| 173 | props->sm_sl = 0; |
| 174 | props->state = port_state; |
| 175 | props->port_cap_flags = |
| 176 | IB_PORT_CM_SUP | |
| 177 | IB_PORT_REINIT_SUP | |
Moni Shoua | b4a26a2 | 2014-02-09 11:54:34 +0200 | [diff] [blame] | 178 | IB_PORT_DEVICE_MGMT_SUP | IB_PORT_VENDOR_CLASS_SUP | IB_PORT_IP_BASED_GIDS; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 179 | props->gid_tbl_len = OCRDMA_MAX_SGID; |
| 180 | props->pkey_tbl_len = 1; |
| 181 | props->bad_pkey_cntr = 0; |
| 182 | props->qkey_viol_cntr = 0; |
Naresh Gottumukkala | f24ceba | 2013-08-26 15:27:47 +0530 | [diff] [blame] | 183 | get_link_speed_and_width(dev, &props->active_speed, |
| 184 | &props->active_width); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 185 | props->max_msg_sz = 0x80000000; |
| 186 | props->max_vl_num = 4; |
| 187 | return 0; |
| 188 | } |
| 189 | |
| 190 | int ocrdma_modify_port(struct ib_device *ibdev, u8 port, int mask, |
| 191 | struct ib_port_modify *props) |
| 192 | { |
| 193 | struct ocrdma_dev *dev; |
| 194 | |
| 195 | dev = get_ocrdma_dev(ibdev); |
| 196 | if (port > 1) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 197 | 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] | 198 | return -EINVAL; |
| 199 | } |
| 200 | return 0; |
| 201 | } |
| 202 | |
| 203 | static int ocrdma_add_mmap(struct ocrdma_ucontext *uctx, u64 phy_addr, |
| 204 | unsigned long len) |
| 205 | { |
| 206 | struct ocrdma_mm *mm; |
| 207 | |
| 208 | mm = kzalloc(sizeof(*mm), GFP_KERNEL); |
| 209 | if (mm == NULL) |
| 210 | return -ENOMEM; |
| 211 | mm->key.phy_addr = phy_addr; |
| 212 | mm->key.len = len; |
| 213 | INIT_LIST_HEAD(&mm->entry); |
| 214 | |
| 215 | mutex_lock(&uctx->mm_list_lock); |
| 216 | list_add_tail(&mm->entry, &uctx->mm_head); |
| 217 | mutex_unlock(&uctx->mm_list_lock); |
| 218 | return 0; |
| 219 | } |
| 220 | |
| 221 | static void ocrdma_del_mmap(struct ocrdma_ucontext *uctx, u64 phy_addr, |
| 222 | unsigned long len) |
| 223 | { |
| 224 | struct ocrdma_mm *mm, *tmp; |
| 225 | |
| 226 | mutex_lock(&uctx->mm_list_lock); |
| 227 | list_for_each_entry_safe(mm, tmp, &uctx->mm_head, entry) { |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 228 | if (len != mm->key.len && phy_addr != mm->key.phy_addr) |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 229 | continue; |
| 230 | |
| 231 | list_del(&mm->entry); |
| 232 | kfree(mm); |
| 233 | break; |
| 234 | } |
| 235 | mutex_unlock(&uctx->mm_list_lock); |
| 236 | } |
| 237 | |
| 238 | static bool ocrdma_search_mmap(struct ocrdma_ucontext *uctx, u64 phy_addr, |
| 239 | unsigned long len) |
| 240 | { |
| 241 | bool found = false; |
| 242 | struct ocrdma_mm *mm; |
| 243 | |
| 244 | mutex_lock(&uctx->mm_list_lock); |
| 245 | list_for_each_entry(mm, &uctx->mm_head, entry) { |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 246 | if (len != mm->key.len && phy_addr != mm->key.phy_addr) |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 247 | continue; |
| 248 | |
| 249 | found = true; |
| 250 | break; |
| 251 | } |
| 252 | mutex_unlock(&uctx->mm_list_lock); |
| 253 | return found; |
| 254 | } |
| 255 | |
Mitesh Ahuja | 9ba1377 | 2014-12-18 14:12:57 +0530 | [diff] [blame] | 256 | |
| 257 | static u16 _ocrdma_pd_mgr_get_bitmap(struct ocrdma_dev *dev, bool dpp_pool) |
| 258 | { |
| 259 | u16 pd_bitmap_idx = 0; |
| 260 | const unsigned long *pd_bitmap; |
| 261 | |
| 262 | if (dpp_pool) { |
| 263 | pd_bitmap = dev->pd_mgr->pd_dpp_bitmap; |
| 264 | pd_bitmap_idx = find_first_zero_bit(pd_bitmap, |
| 265 | dev->pd_mgr->max_dpp_pd); |
| 266 | __set_bit(pd_bitmap_idx, dev->pd_mgr->pd_dpp_bitmap); |
| 267 | dev->pd_mgr->pd_dpp_count++; |
| 268 | if (dev->pd_mgr->pd_dpp_count > dev->pd_mgr->pd_dpp_thrsh) |
| 269 | dev->pd_mgr->pd_dpp_thrsh = dev->pd_mgr->pd_dpp_count; |
| 270 | } else { |
| 271 | pd_bitmap = dev->pd_mgr->pd_norm_bitmap; |
| 272 | pd_bitmap_idx = find_first_zero_bit(pd_bitmap, |
| 273 | dev->pd_mgr->max_normal_pd); |
| 274 | __set_bit(pd_bitmap_idx, dev->pd_mgr->pd_norm_bitmap); |
| 275 | dev->pd_mgr->pd_norm_count++; |
| 276 | if (dev->pd_mgr->pd_norm_count > dev->pd_mgr->pd_norm_thrsh) |
| 277 | dev->pd_mgr->pd_norm_thrsh = dev->pd_mgr->pd_norm_count; |
| 278 | } |
| 279 | return pd_bitmap_idx; |
| 280 | } |
| 281 | |
| 282 | static int _ocrdma_pd_mgr_put_bitmap(struct ocrdma_dev *dev, u16 pd_id, |
| 283 | bool dpp_pool) |
| 284 | { |
| 285 | u16 pd_count; |
| 286 | u16 pd_bit_index; |
| 287 | |
| 288 | pd_count = dpp_pool ? dev->pd_mgr->pd_dpp_count : |
| 289 | dev->pd_mgr->pd_norm_count; |
| 290 | if (pd_count == 0) |
| 291 | return -EINVAL; |
| 292 | |
| 293 | if (dpp_pool) { |
| 294 | pd_bit_index = pd_id - dev->pd_mgr->pd_dpp_start; |
| 295 | if (pd_bit_index >= dev->pd_mgr->max_dpp_pd) { |
| 296 | return -EINVAL; |
| 297 | } else { |
| 298 | __clear_bit(pd_bit_index, dev->pd_mgr->pd_dpp_bitmap); |
| 299 | dev->pd_mgr->pd_dpp_count--; |
| 300 | } |
| 301 | } else { |
| 302 | pd_bit_index = pd_id - dev->pd_mgr->pd_norm_start; |
| 303 | if (pd_bit_index >= dev->pd_mgr->max_normal_pd) { |
| 304 | return -EINVAL; |
| 305 | } else { |
| 306 | __clear_bit(pd_bit_index, dev->pd_mgr->pd_norm_bitmap); |
| 307 | dev->pd_mgr->pd_norm_count--; |
| 308 | } |
| 309 | } |
| 310 | |
| 311 | return 0; |
| 312 | } |
| 313 | |
| 314 | static u8 ocrdma_put_pd_num(struct ocrdma_dev *dev, u16 pd_id, |
| 315 | bool dpp_pool) |
| 316 | { |
| 317 | int status; |
| 318 | |
| 319 | mutex_lock(&dev->dev_lock); |
| 320 | status = _ocrdma_pd_mgr_put_bitmap(dev, pd_id, dpp_pool); |
| 321 | mutex_unlock(&dev->dev_lock); |
| 322 | return status; |
| 323 | } |
| 324 | |
| 325 | static int ocrdma_get_pd_num(struct ocrdma_dev *dev, struct ocrdma_pd *pd) |
| 326 | { |
| 327 | u16 pd_idx = 0; |
| 328 | int status = 0; |
| 329 | |
| 330 | mutex_lock(&dev->dev_lock); |
| 331 | if (pd->dpp_enabled) { |
| 332 | /* try allocating DPP PD, if not available then normal PD */ |
| 333 | if (dev->pd_mgr->pd_dpp_count < dev->pd_mgr->max_dpp_pd) { |
| 334 | pd_idx = _ocrdma_pd_mgr_get_bitmap(dev, true); |
| 335 | pd->id = dev->pd_mgr->pd_dpp_start + pd_idx; |
| 336 | pd->dpp_page = dev->pd_mgr->dpp_page_index + pd_idx; |
| 337 | } else if (dev->pd_mgr->pd_norm_count < |
| 338 | dev->pd_mgr->max_normal_pd) { |
| 339 | pd_idx = _ocrdma_pd_mgr_get_bitmap(dev, false); |
| 340 | pd->id = dev->pd_mgr->pd_norm_start + pd_idx; |
| 341 | pd->dpp_enabled = false; |
| 342 | } else { |
| 343 | status = -EINVAL; |
| 344 | } |
| 345 | } else { |
| 346 | if (dev->pd_mgr->pd_norm_count < dev->pd_mgr->max_normal_pd) { |
| 347 | pd_idx = _ocrdma_pd_mgr_get_bitmap(dev, false); |
| 348 | pd->id = dev->pd_mgr->pd_norm_start + pd_idx; |
| 349 | } else { |
| 350 | status = -EINVAL; |
| 351 | } |
| 352 | } |
| 353 | mutex_unlock(&dev->dev_lock); |
| 354 | return status; |
| 355 | } |
| 356 | |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 357 | static struct ocrdma_pd *_ocrdma_alloc_pd(struct ocrdma_dev *dev, |
| 358 | struct ocrdma_ucontext *uctx, |
| 359 | struct ib_udata *udata) |
| 360 | { |
| 361 | struct ocrdma_pd *pd = NULL; |
| 362 | int status = 0; |
| 363 | |
| 364 | pd = kzalloc(sizeof(*pd), GFP_KERNEL); |
| 365 | if (!pd) |
| 366 | return ERR_PTR(-ENOMEM); |
| 367 | |
| 368 | if (udata && uctx) { |
| 369 | pd->dpp_enabled = |
Devesh Sharma | 21c3391 | 2014-02-04 11:56:56 +0530 | [diff] [blame] | 370 | ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R; |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 371 | pd->num_dpp_qp = |
Devesh Sharma | a53d77a | 2014-06-10 19:32:17 +0530 | [diff] [blame] | 372 | pd->dpp_enabled ? (dev->nic_info.db_page_size / |
| 373 | dev->attr.wqe_size) : 0; |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 374 | } |
| 375 | |
Mitesh Ahuja | 9ba1377 | 2014-12-18 14:12:57 +0530 | [diff] [blame] | 376 | if (dev->pd_mgr->pd_prealloc_valid) { |
| 377 | status = ocrdma_get_pd_num(dev, pd); |
| 378 | return (status == 0) ? pd : ERR_PTR(status); |
| 379 | } |
| 380 | |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 381 | retry: |
| 382 | status = ocrdma_mbx_alloc_pd(dev, pd); |
| 383 | if (status) { |
| 384 | if (pd->dpp_enabled) { |
| 385 | pd->dpp_enabled = false; |
| 386 | pd->num_dpp_qp = 0; |
| 387 | goto retry; |
| 388 | } else { |
| 389 | kfree(pd); |
| 390 | return ERR_PTR(status); |
| 391 | } |
| 392 | } |
| 393 | |
| 394 | return pd; |
| 395 | } |
| 396 | |
| 397 | static inline int is_ucontext_pd(struct ocrdma_ucontext *uctx, |
| 398 | struct ocrdma_pd *pd) |
| 399 | { |
| 400 | return (uctx->cntxt_pd == pd ? true : false); |
| 401 | } |
| 402 | |
| 403 | static int _ocrdma_dealloc_pd(struct ocrdma_dev *dev, |
| 404 | struct ocrdma_pd *pd) |
| 405 | { |
| 406 | int status = 0; |
| 407 | |
Mitesh Ahuja | 9ba1377 | 2014-12-18 14:12:57 +0530 | [diff] [blame] | 408 | if (dev->pd_mgr->pd_prealloc_valid) |
| 409 | status = ocrdma_put_pd_num(dev, pd->id, pd->dpp_enabled); |
| 410 | else |
| 411 | status = ocrdma_mbx_dealloc_pd(dev, pd); |
| 412 | |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 413 | kfree(pd); |
| 414 | return status; |
| 415 | } |
| 416 | |
| 417 | static int ocrdma_alloc_ucontext_pd(struct ocrdma_dev *dev, |
| 418 | struct ocrdma_ucontext *uctx, |
| 419 | struct ib_udata *udata) |
| 420 | { |
| 421 | int status = 0; |
| 422 | |
| 423 | uctx->cntxt_pd = _ocrdma_alloc_pd(dev, uctx, udata); |
| 424 | if (IS_ERR(uctx->cntxt_pd)) { |
| 425 | status = PTR_ERR(uctx->cntxt_pd); |
| 426 | uctx->cntxt_pd = NULL; |
| 427 | goto err; |
| 428 | } |
| 429 | |
| 430 | uctx->cntxt_pd->uctx = uctx; |
| 431 | uctx->cntxt_pd->ibpd.device = &dev->ibdev; |
| 432 | err: |
| 433 | return status; |
| 434 | } |
| 435 | |
| 436 | static int ocrdma_dealloc_ucontext_pd(struct ocrdma_ucontext *uctx) |
| 437 | { |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 438 | struct ocrdma_pd *pd = uctx->cntxt_pd; |
| 439 | struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device); |
| 440 | |
Mitesh Ahuja | 6dab026 | 2014-06-10 19:32:21 +0530 | [diff] [blame] | 441 | if (uctx->pd_in_use) { |
| 442 | pr_err("%s(%d) Freeing in use pdid=0x%x.\n", |
| 443 | __func__, dev->id, pd->id); |
| 444 | } |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 445 | uctx->cntxt_pd = NULL; |
Mitesh Ahuja | 4b8180a | 2014-12-18 14:13:01 +0530 | [diff] [blame] | 446 | (void)_ocrdma_dealloc_pd(dev, pd); |
| 447 | return 0; |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 448 | } |
| 449 | |
| 450 | static struct ocrdma_pd *ocrdma_get_ucontext_pd(struct ocrdma_ucontext *uctx) |
| 451 | { |
| 452 | struct ocrdma_pd *pd = NULL; |
| 453 | |
| 454 | mutex_lock(&uctx->mm_list_lock); |
| 455 | if (!uctx->pd_in_use) { |
| 456 | uctx->pd_in_use = true; |
| 457 | pd = uctx->cntxt_pd; |
| 458 | } |
| 459 | mutex_unlock(&uctx->mm_list_lock); |
| 460 | |
| 461 | return pd; |
| 462 | } |
| 463 | |
| 464 | static void ocrdma_release_ucontext_pd(struct ocrdma_ucontext *uctx) |
| 465 | { |
| 466 | mutex_lock(&uctx->mm_list_lock); |
| 467 | uctx->pd_in_use = false; |
| 468 | mutex_unlock(&uctx->mm_list_lock); |
| 469 | } |
| 470 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 471 | struct ib_ucontext *ocrdma_alloc_ucontext(struct ib_device *ibdev, |
| 472 | struct ib_udata *udata) |
| 473 | { |
| 474 | int status; |
| 475 | struct ocrdma_ucontext *ctx; |
| 476 | struct ocrdma_alloc_ucontext_resp resp; |
| 477 | struct ocrdma_dev *dev = get_ocrdma_dev(ibdev); |
| 478 | struct pci_dev *pdev = dev->nic_info.pdev; |
| 479 | u32 map_len = roundup(sizeof(u32) * 2048, PAGE_SIZE); |
| 480 | |
| 481 | if (!udata) |
| 482 | return ERR_PTR(-EFAULT); |
| 483 | ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); |
| 484 | if (!ctx) |
| 485 | return ERR_PTR(-ENOMEM); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 486 | INIT_LIST_HEAD(&ctx->mm_head); |
| 487 | mutex_init(&ctx->mm_list_lock); |
| 488 | |
| 489 | ctx->ah_tbl.va = dma_alloc_coherent(&pdev->dev, map_len, |
| 490 | &ctx->ah_tbl.pa, GFP_KERNEL); |
| 491 | if (!ctx->ah_tbl.va) { |
| 492 | kfree(ctx); |
| 493 | return ERR_PTR(-ENOMEM); |
| 494 | } |
| 495 | memset(ctx->ah_tbl.va, 0, map_len); |
| 496 | ctx->ah_tbl.len = map_len; |
| 497 | |
Dan Carpenter | 63ea374 | 2013-07-29 22:34:29 +0300 | [diff] [blame] | 498 | memset(&resp, 0, sizeof(resp)); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 499 | resp.ah_tbl_len = ctx->ah_tbl.len; |
Devesh Sharma | 1b76d38 | 2014-09-05 19:35:40 +0530 | [diff] [blame] | 500 | resp.ah_tbl_page = virt_to_phys(ctx->ah_tbl.va); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 501 | |
| 502 | status = ocrdma_add_mmap(ctx, resp.ah_tbl_page, resp.ah_tbl_len); |
| 503 | if (status) |
| 504 | goto map_err; |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 505 | |
| 506 | status = ocrdma_alloc_ucontext_pd(dev, ctx, udata); |
| 507 | if (status) |
| 508 | goto pd_err; |
| 509 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 510 | resp.dev_id = dev->id; |
| 511 | resp.max_inline_data = dev->attr.max_inline_data; |
| 512 | resp.wqe_size = dev->attr.wqe_size; |
| 513 | resp.rqe_size = dev->attr.rqe_size; |
| 514 | resp.dpp_wqe_size = dev->attr.wqe_size; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 515 | |
| 516 | memcpy(resp.fw_ver, dev->attr.fw_ver, sizeof(resp.fw_ver)); |
| 517 | status = ib_copy_to_udata(udata, &resp, sizeof(resp)); |
| 518 | if (status) |
| 519 | goto cpy_err; |
| 520 | return &ctx->ibucontext; |
| 521 | |
| 522 | cpy_err: |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 523 | pd_err: |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 524 | ocrdma_del_mmap(ctx, ctx->ah_tbl.pa, ctx->ah_tbl.len); |
| 525 | map_err: |
| 526 | dma_free_coherent(&pdev->dev, ctx->ah_tbl.len, ctx->ah_tbl.va, |
| 527 | ctx->ah_tbl.pa); |
| 528 | kfree(ctx); |
| 529 | return ERR_PTR(status); |
| 530 | } |
| 531 | |
| 532 | int ocrdma_dealloc_ucontext(struct ib_ucontext *ibctx) |
| 533 | { |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 534 | int status = 0; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 535 | struct ocrdma_mm *mm, *tmp; |
| 536 | struct ocrdma_ucontext *uctx = get_ocrdma_ucontext(ibctx); |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 537 | struct ocrdma_dev *dev = get_ocrdma_dev(ibctx->device); |
| 538 | struct pci_dev *pdev = dev->nic_info.pdev; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 539 | |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 540 | status = ocrdma_dealloc_ucontext_pd(uctx); |
| 541 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 542 | ocrdma_del_mmap(uctx, uctx->ah_tbl.pa, uctx->ah_tbl.len); |
| 543 | dma_free_coherent(&pdev->dev, uctx->ah_tbl.len, uctx->ah_tbl.va, |
| 544 | uctx->ah_tbl.pa); |
| 545 | |
| 546 | list_for_each_entry_safe(mm, tmp, &uctx->mm_head, entry) { |
| 547 | list_del(&mm->entry); |
| 548 | kfree(mm); |
| 549 | } |
| 550 | kfree(uctx); |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 551 | return status; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 552 | } |
| 553 | |
| 554 | int ocrdma_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) |
| 555 | { |
| 556 | struct ocrdma_ucontext *ucontext = get_ocrdma_ucontext(context); |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 557 | struct ocrdma_dev *dev = get_ocrdma_dev(context->device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 558 | unsigned long vm_page = vma->vm_pgoff << PAGE_SHIFT; |
| 559 | u64 unmapped_db = (u64) dev->nic_info.unmapped_db; |
| 560 | unsigned long len = (vma->vm_end - vma->vm_start); |
| 561 | int status = 0; |
| 562 | bool found; |
| 563 | |
| 564 | if (vma->vm_start & (PAGE_SIZE - 1)) |
| 565 | return -EINVAL; |
| 566 | found = ocrdma_search_mmap(ucontext, vma->vm_pgoff << PAGE_SHIFT, len); |
| 567 | if (!found) |
| 568 | return -EINVAL; |
| 569 | |
| 570 | if ((vm_page >= unmapped_db) && (vm_page <= (unmapped_db + |
| 571 | dev->nic_info.db_total_size)) && |
| 572 | (len <= dev->nic_info.db_page_size)) { |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 573 | if (vma->vm_flags & VM_READ) |
| 574 | return -EPERM; |
| 575 | |
| 576 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 577 | status = io_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, |
| 578 | len, vma->vm_page_prot); |
| 579 | } else if (dev->nic_info.dpp_unmapped_len && |
| 580 | (vm_page >= (u64) dev->nic_info.dpp_unmapped_addr) && |
| 581 | (vm_page <= (u64) (dev->nic_info.dpp_unmapped_addr + |
| 582 | dev->nic_info.dpp_unmapped_len)) && |
| 583 | (len <= dev->nic_info.dpp_unmapped_len)) { |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 584 | if (vma->vm_flags & VM_READ) |
| 585 | return -EPERM; |
| 586 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 587 | vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); |
| 588 | status = io_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, |
| 589 | len, vma->vm_page_prot); |
| 590 | } else { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 591 | status = remap_pfn_range(vma, vma->vm_start, |
| 592 | vma->vm_pgoff, len, vma->vm_page_prot); |
| 593 | } |
| 594 | return status; |
| 595 | } |
| 596 | |
Naresh Gottumukkala | 45e86b3 | 2013-08-07 12:52:37 +0530 | [diff] [blame] | 597 | 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] | 598 | struct ib_ucontext *ib_ctx, |
| 599 | struct ib_udata *udata) |
| 600 | { |
| 601 | int status; |
| 602 | u64 db_page_addr; |
Roland Dreier | da49643 | 2012-04-16 11:32:17 -0700 | [diff] [blame] | 603 | u64 dpp_page_addr = 0; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 604 | u32 db_page_size; |
| 605 | struct ocrdma_alloc_pd_uresp rsp; |
| 606 | struct ocrdma_ucontext *uctx = get_ocrdma_ucontext(ib_ctx); |
| 607 | |
Dan Carpenter | 63ea374 | 2013-07-29 22:34:29 +0300 | [diff] [blame] | 608 | memset(&rsp, 0, sizeof(rsp)); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 609 | rsp.id = pd->id; |
| 610 | rsp.dpp_enabled = pd->dpp_enabled; |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 611 | db_page_addr = ocrdma_get_db_addr(dev, pd->id); |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 612 | db_page_size = dev->nic_info.db_page_size; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 613 | |
| 614 | status = ocrdma_add_mmap(uctx, db_page_addr, db_page_size); |
| 615 | if (status) |
| 616 | return status; |
| 617 | |
| 618 | if (pd->dpp_enabled) { |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 619 | dpp_page_addr = dev->nic_info.dpp_unmapped_addr + |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 620 | (pd->id * PAGE_SIZE); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 621 | status = ocrdma_add_mmap(uctx, dpp_page_addr, |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 622 | PAGE_SIZE); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 623 | if (status) |
| 624 | goto dpp_map_err; |
| 625 | rsp.dpp_page_addr_hi = upper_32_bits(dpp_page_addr); |
| 626 | rsp.dpp_page_addr_lo = dpp_page_addr; |
| 627 | } |
| 628 | |
| 629 | status = ib_copy_to_udata(udata, &rsp, sizeof(rsp)); |
| 630 | if (status) |
| 631 | goto ucopy_err; |
| 632 | |
| 633 | pd->uctx = uctx; |
| 634 | return 0; |
| 635 | |
| 636 | ucopy_err: |
Roland Dreier | da49643 | 2012-04-16 11:32:17 -0700 | [diff] [blame] | 637 | if (pd->dpp_enabled) |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 638 | ocrdma_del_mmap(pd->uctx, dpp_page_addr, PAGE_SIZE); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 639 | dpp_map_err: |
| 640 | ocrdma_del_mmap(pd->uctx, db_page_addr, db_page_size); |
| 641 | return status; |
| 642 | } |
| 643 | |
| 644 | struct ib_pd *ocrdma_alloc_pd(struct ib_device *ibdev, |
| 645 | struct ib_ucontext *context, |
| 646 | struct ib_udata *udata) |
| 647 | { |
| 648 | struct ocrdma_dev *dev = get_ocrdma_dev(ibdev); |
| 649 | struct ocrdma_pd *pd; |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 650 | struct ocrdma_ucontext *uctx = NULL; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 651 | int status; |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 652 | u8 is_uctx_pd = false; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 653 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 654 | if (udata && context) { |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 655 | uctx = get_ocrdma_ucontext(context); |
| 656 | pd = ocrdma_get_ucontext_pd(uctx); |
| 657 | if (pd) { |
| 658 | is_uctx_pd = true; |
| 659 | goto pd_mapping; |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 660 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 661 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 662 | |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 663 | pd = _ocrdma_alloc_pd(dev, uctx, udata); |
| 664 | if (IS_ERR(pd)) { |
| 665 | status = PTR_ERR(pd); |
| 666 | goto exit; |
| 667 | } |
| 668 | |
| 669 | pd_mapping: |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 670 | if (udata && context) { |
Naresh Gottumukkala | 45e86b3 | 2013-08-07 12:52:37 +0530 | [diff] [blame] | 671 | status = ocrdma_copy_pd_uresp(dev, pd, context, udata); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 672 | if (status) |
| 673 | goto err; |
| 674 | } |
| 675 | return &pd->ibpd; |
| 676 | |
| 677 | err: |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 678 | if (is_uctx_pd) { |
| 679 | ocrdma_release_ucontext_pd(uctx); |
| 680 | } else { |
Mitesh Ahuja | 9ba1377 | 2014-12-18 14:12:57 +0530 | [diff] [blame] | 681 | status = _ocrdma_dealloc_pd(dev, pd); |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 682 | kfree(pd); |
| 683 | } |
| 684 | exit: |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 685 | return ERR_PTR(status); |
| 686 | } |
| 687 | |
| 688 | int ocrdma_dealloc_pd(struct ib_pd *ibpd) |
| 689 | { |
| 690 | struct ocrdma_pd *pd = get_ocrdma_pd(ibpd); |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 691 | struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device); |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 692 | struct ocrdma_ucontext *uctx = NULL; |
| 693 | int status = 0; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 694 | u64 usr_db; |
| 695 | |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 696 | uctx = pd->uctx; |
| 697 | if (uctx) { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 698 | u64 dpp_db = dev->nic_info.dpp_unmapped_addr + |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 699 | (pd->id * PAGE_SIZE); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 700 | if (pd->dpp_enabled) |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 701 | ocrdma_del_mmap(pd->uctx, dpp_db, PAGE_SIZE); |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 702 | usr_db = ocrdma_get_db_addr(dev, pd->id); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 703 | 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] | 704 | |
| 705 | if (is_ucontext_pd(uctx, pd)) { |
| 706 | ocrdma_release_ucontext_pd(uctx); |
| 707 | return status; |
| 708 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 709 | } |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 710 | status = _ocrdma_dealloc_pd(dev, pd); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 711 | return status; |
| 712 | } |
| 713 | |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 714 | static int ocrdma_alloc_lkey(struct ocrdma_dev *dev, struct ocrdma_mr *mr, |
| 715 | u32 pdid, int acc, u32 num_pbls, u32 addr_check) |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 716 | { |
| 717 | int status; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 718 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 719 | mr->hwmr.fr_mr = 0; |
| 720 | mr->hwmr.local_rd = 1; |
| 721 | mr->hwmr.remote_rd = (acc & IB_ACCESS_REMOTE_READ) ? 1 : 0; |
| 722 | mr->hwmr.remote_wr = (acc & IB_ACCESS_REMOTE_WRITE) ? 1 : 0; |
| 723 | mr->hwmr.local_wr = (acc & IB_ACCESS_LOCAL_WRITE) ? 1 : 0; |
| 724 | mr->hwmr.mw_bind = (acc & IB_ACCESS_MW_BIND) ? 1 : 0; |
| 725 | mr->hwmr.remote_atomic = (acc & IB_ACCESS_REMOTE_ATOMIC) ? 1 : 0; |
| 726 | mr->hwmr.num_pbls = num_pbls; |
| 727 | |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 728 | status = ocrdma_mbx_alloc_lkey(dev, &mr->hwmr, pdid, addr_check); |
| 729 | if (status) |
| 730 | return status; |
| 731 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 732 | mr->ibmr.lkey = mr->hwmr.lkey; |
| 733 | if (mr->hwmr.remote_wr || mr->hwmr.remote_rd) |
| 734 | mr->ibmr.rkey = mr->hwmr.lkey; |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 735 | return 0; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 736 | } |
| 737 | |
| 738 | struct ib_mr *ocrdma_get_dma_mr(struct ib_pd *ibpd, int acc) |
| 739 | { |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 740 | int status; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 741 | struct ocrdma_mr *mr; |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 742 | struct ocrdma_pd *pd = get_ocrdma_pd(ibpd); |
| 743 | struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 744 | |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 745 | if (acc & IB_ACCESS_REMOTE_WRITE && !(acc & IB_ACCESS_LOCAL_WRITE)) { |
| 746 | pr_err("%s err, invalid access rights\n", __func__); |
| 747 | return ERR_PTR(-EINVAL); |
| 748 | } |
| 749 | |
| 750 | mr = kzalloc(sizeof(*mr), GFP_KERNEL); |
| 751 | if (!mr) |
| 752 | return ERR_PTR(-ENOMEM); |
| 753 | |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 754 | status = ocrdma_alloc_lkey(dev, mr, pd->id, acc, 0, |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 755 | OCRDMA_ADDR_CHECK_DISABLE); |
| 756 | if (status) { |
| 757 | kfree(mr); |
| 758 | return ERR_PTR(status); |
| 759 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 760 | |
| 761 | return &mr->ibmr; |
| 762 | } |
| 763 | |
| 764 | static void ocrdma_free_mr_pbl_tbl(struct ocrdma_dev *dev, |
| 765 | struct ocrdma_hw_mr *mr) |
| 766 | { |
| 767 | struct pci_dev *pdev = dev->nic_info.pdev; |
| 768 | int i = 0; |
| 769 | |
| 770 | if (mr->pbl_table) { |
| 771 | for (i = 0; i < mr->num_pbls; i++) { |
| 772 | if (!mr->pbl_table[i].va) |
| 773 | continue; |
| 774 | dma_free_coherent(&pdev->dev, mr->pbl_size, |
| 775 | mr->pbl_table[i].va, |
| 776 | mr->pbl_table[i].pa); |
| 777 | } |
| 778 | kfree(mr->pbl_table); |
| 779 | mr->pbl_table = NULL; |
| 780 | } |
| 781 | } |
| 782 | |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 783 | static int ocrdma_get_pbl_info(struct ocrdma_dev *dev, struct ocrdma_mr *mr, |
| 784 | u32 num_pbes) |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 785 | { |
| 786 | u32 num_pbls = 0; |
| 787 | u32 idx = 0; |
| 788 | int status = 0; |
| 789 | u32 pbl_size; |
| 790 | |
| 791 | do { |
| 792 | pbl_size = OCRDMA_MIN_HPAGE_SIZE * (1 << idx); |
| 793 | if (pbl_size > MAX_OCRDMA_PBL_SIZE) { |
| 794 | status = -EFAULT; |
| 795 | break; |
| 796 | } |
| 797 | num_pbls = roundup(num_pbes, (pbl_size / sizeof(u64))); |
| 798 | num_pbls = num_pbls / (pbl_size / sizeof(u64)); |
| 799 | idx++; |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 800 | } while (num_pbls >= dev->attr.max_num_mr_pbl); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 801 | |
| 802 | mr->hwmr.num_pbes = num_pbes; |
| 803 | mr->hwmr.num_pbls = num_pbls; |
| 804 | mr->hwmr.pbl_size = pbl_size; |
| 805 | return status; |
| 806 | } |
| 807 | |
| 808 | static int ocrdma_build_pbl_tbl(struct ocrdma_dev *dev, struct ocrdma_hw_mr *mr) |
| 809 | { |
| 810 | int status = 0; |
| 811 | int i; |
| 812 | u32 dma_len = mr->pbl_size; |
| 813 | struct pci_dev *pdev = dev->nic_info.pdev; |
| 814 | void *va; |
| 815 | dma_addr_t pa; |
| 816 | |
| 817 | mr->pbl_table = kzalloc(sizeof(struct ocrdma_pbl) * |
| 818 | mr->num_pbls, GFP_KERNEL); |
| 819 | |
| 820 | if (!mr->pbl_table) |
| 821 | return -ENOMEM; |
| 822 | |
| 823 | for (i = 0; i < mr->num_pbls; i++) { |
| 824 | va = dma_alloc_coherent(&pdev->dev, dma_len, &pa, GFP_KERNEL); |
| 825 | if (!va) { |
| 826 | ocrdma_free_mr_pbl_tbl(dev, mr); |
| 827 | status = -ENOMEM; |
| 828 | break; |
| 829 | } |
| 830 | memset(va, 0, dma_len); |
| 831 | mr->pbl_table[i].va = va; |
| 832 | mr->pbl_table[i].pa = pa; |
| 833 | } |
| 834 | return status; |
| 835 | } |
| 836 | |
| 837 | static void build_user_pbes(struct ocrdma_dev *dev, struct ocrdma_mr *mr, |
| 838 | u32 num_pbes) |
| 839 | { |
| 840 | struct ocrdma_pbe *pbe; |
Yishai Hadas | eeb8461 | 2014-01-28 13:40:15 +0200 | [diff] [blame] | 841 | struct scatterlist *sg; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 842 | struct ocrdma_pbl *pbl_tbl = mr->hwmr.pbl_table; |
| 843 | struct ib_umem *umem = mr->umem; |
Yishai Hadas | eeb8461 | 2014-01-28 13:40:15 +0200 | [diff] [blame] | 844 | int shift, pg_cnt, pages, pbe_cnt, entry, total_num_pbes = 0; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 845 | |
| 846 | if (!mr->hwmr.num_pbes) |
| 847 | return; |
| 848 | |
| 849 | pbe = (struct ocrdma_pbe *)pbl_tbl->va; |
| 850 | pbe_cnt = 0; |
| 851 | |
| 852 | shift = ilog2(umem->page_size); |
| 853 | |
Yishai Hadas | eeb8461 | 2014-01-28 13:40:15 +0200 | [diff] [blame] | 854 | for_each_sg(umem->sg_head.sgl, sg, umem->nmap, entry) { |
| 855 | pages = sg_dma_len(sg) >> shift; |
| 856 | for (pg_cnt = 0; pg_cnt < pages; pg_cnt++) { |
| 857 | /* store the page address in pbe */ |
| 858 | pbe->pa_lo = |
| 859 | cpu_to_le32(sg_dma_address |
| 860 | (sg) + |
| 861 | (umem->page_size * pg_cnt)); |
| 862 | pbe->pa_hi = |
| 863 | cpu_to_le32(upper_32_bits |
| 864 | ((sg_dma_address |
| 865 | (sg) + |
| 866 | umem->page_size * pg_cnt))); |
| 867 | pbe_cnt += 1; |
| 868 | total_num_pbes += 1; |
| 869 | pbe++; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 870 | |
Yishai Hadas | eeb8461 | 2014-01-28 13:40:15 +0200 | [diff] [blame] | 871 | /* if done building pbes, issue the mbx cmd. */ |
| 872 | if (total_num_pbes == num_pbes) |
| 873 | return; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 874 | |
Yishai Hadas | eeb8461 | 2014-01-28 13:40:15 +0200 | [diff] [blame] | 875 | /* if the given pbl is full storing the pbes, |
| 876 | * move to next pbl. |
| 877 | */ |
| 878 | if (pbe_cnt == |
| 879 | (mr->hwmr.pbl_size / sizeof(u64))) { |
| 880 | pbl_tbl++; |
| 881 | pbe = (struct ocrdma_pbe *)pbl_tbl->va; |
| 882 | pbe_cnt = 0; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 883 | } |
Yishai Hadas | eeb8461 | 2014-01-28 13:40:15 +0200 | [diff] [blame] | 884 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 885 | } |
| 886 | } |
| 887 | } |
| 888 | |
| 889 | struct ib_mr *ocrdma_reg_user_mr(struct ib_pd *ibpd, u64 start, u64 len, |
| 890 | u64 usr_addr, int acc, struct ib_udata *udata) |
| 891 | { |
| 892 | int status = -ENOMEM; |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 893 | struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 894 | struct ocrdma_mr *mr; |
| 895 | struct ocrdma_pd *pd; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 896 | u32 num_pbes; |
| 897 | |
| 898 | pd = get_ocrdma_pd(ibpd); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 899 | |
| 900 | if (acc & IB_ACCESS_REMOTE_WRITE && !(acc & IB_ACCESS_LOCAL_WRITE)) |
| 901 | return ERR_PTR(-EINVAL); |
| 902 | |
| 903 | mr = kzalloc(sizeof(*mr), GFP_KERNEL); |
| 904 | if (!mr) |
| 905 | return ERR_PTR(status); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 906 | mr->umem = ib_umem_get(ibpd->uobject->context, start, len, acc, 0); |
| 907 | if (IS_ERR(mr->umem)) { |
| 908 | status = -EFAULT; |
| 909 | goto umem_err; |
| 910 | } |
| 911 | num_pbes = ib_umem_page_count(mr->umem); |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 912 | status = ocrdma_get_pbl_info(dev, mr, num_pbes); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 913 | if (status) |
| 914 | goto umem_err; |
| 915 | |
| 916 | mr->hwmr.pbe_size = mr->umem->page_size; |
Haggai Eran | 406f9e5 | 2014-12-11 17:04:12 +0200 | [diff] [blame] | 917 | mr->hwmr.fbo = ib_umem_offset(mr->umem); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 918 | mr->hwmr.va = usr_addr; |
| 919 | mr->hwmr.len = len; |
| 920 | mr->hwmr.remote_wr = (acc & IB_ACCESS_REMOTE_WRITE) ? 1 : 0; |
| 921 | mr->hwmr.remote_rd = (acc & IB_ACCESS_REMOTE_READ) ? 1 : 0; |
| 922 | mr->hwmr.local_wr = (acc & IB_ACCESS_LOCAL_WRITE) ? 1 : 0; |
| 923 | mr->hwmr.local_rd = 1; |
| 924 | mr->hwmr.remote_atomic = (acc & IB_ACCESS_REMOTE_ATOMIC) ? 1 : 0; |
| 925 | status = ocrdma_build_pbl_tbl(dev, &mr->hwmr); |
| 926 | if (status) |
| 927 | goto umem_err; |
| 928 | build_user_pbes(dev, mr, num_pbes); |
| 929 | status = ocrdma_reg_mr(dev, &mr->hwmr, pd->id, acc); |
| 930 | if (status) |
| 931 | goto mbx_err; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 932 | mr->ibmr.lkey = mr->hwmr.lkey; |
| 933 | if (mr->hwmr.remote_wr || mr->hwmr.remote_rd) |
| 934 | mr->ibmr.rkey = mr->hwmr.lkey; |
| 935 | |
| 936 | return &mr->ibmr; |
| 937 | |
| 938 | mbx_err: |
| 939 | ocrdma_free_mr_pbl_tbl(dev, &mr->hwmr); |
| 940 | umem_err: |
| 941 | kfree(mr); |
| 942 | return ERR_PTR(status); |
| 943 | } |
| 944 | |
| 945 | int ocrdma_dereg_mr(struct ib_mr *ib_mr) |
| 946 | { |
| 947 | struct ocrdma_mr *mr = get_ocrdma_mr(ib_mr); |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 948 | struct ocrdma_dev *dev = get_ocrdma_dev(ib_mr->device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 949 | |
Mitesh Ahuja | 4b8180a | 2014-12-18 14:13:01 +0530 | [diff] [blame] | 950 | (void) ocrdma_mbx_dealloc_lkey(dev, mr->hwmr.fr_mr, mr->hwmr.lkey); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 951 | |
Selvin Xavier | 9d1878a | 2014-02-04 11:57:02 +0530 | [diff] [blame] | 952 | ocrdma_free_mr_pbl_tbl(dev, &mr->hwmr); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 953 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 954 | /* it could be user registered memory. */ |
| 955 | if (mr->umem) |
| 956 | ib_umem_release(mr->umem); |
| 957 | kfree(mr); |
Mitesh Ahuja | 6dab026 | 2014-06-10 19:32:21 +0530 | [diff] [blame] | 958 | |
| 959 | /* Don't stop cleanup, in case FW is unresponsive */ |
| 960 | if (dev->mqe_ctx.fw_error_state) { |
Mitesh Ahuja | 6dab026 | 2014-06-10 19:32:21 +0530 | [diff] [blame] | 961 | pr_err("%s(%d) fw not responding.\n", |
| 962 | __func__, dev->id); |
| 963 | } |
Mitesh Ahuja | 4b8180a | 2014-12-18 14:13:01 +0530 | [diff] [blame] | 964 | return 0; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 965 | } |
| 966 | |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 967 | static int ocrdma_copy_cq_uresp(struct ocrdma_dev *dev, struct ocrdma_cq *cq, |
| 968 | struct ib_udata *udata, |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 969 | struct ib_ucontext *ib_ctx) |
| 970 | { |
| 971 | int status; |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 972 | struct ocrdma_ucontext *uctx = get_ocrdma_ucontext(ib_ctx); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 973 | struct ocrdma_create_cq_uresp uresp; |
| 974 | |
Dan Carpenter | 63ea374 | 2013-07-29 22:34:29 +0300 | [diff] [blame] | 975 | memset(&uresp, 0, sizeof(uresp)); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 976 | uresp.cq_id = cq->id; |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 977 | uresp.page_size = PAGE_ALIGN(cq->len); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 978 | uresp.num_pages = 1; |
| 979 | uresp.max_hw_cqe = cq->max_hw_cqe; |
Devesh Sharma | 1b76d38 | 2014-09-05 19:35:40 +0530 | [diff] [blame] | 980 | uresp.page_addr[0] = virt_to_phys(cq->va); |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 981 | 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] | 982 | uresp.db_page_size = dev->nic_info.db_page_size; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 983 | uresp.phase_change = cq->phase_change ? 1 : 0; |
| 984 | status = ib_copy_to_udata(udata, &uresp, sizeof(uresp)); |
| 985 | if (status) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 986 | pr_err("%s(%d) copy error cqid=0x%x.\n", |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 987 | __func__, dev->id, cq->id); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 988 | goto err; |
| 989 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 990 | status = ocrdma_add_mmap(uctx, uresp.db_page_addr, uresp.db_page_size); |
| 991 | if (status) |
| 992 | goto err; |
| 993 | status = ocrdma_add_mmap(uctx, uresp.page_addr[0], uresp.page_size); |
| 994 | if (status) { |
| 995 | ocrdma_del_mmap(uctx, uresp.db_page_addr, uresp.db_page_size); |
| 996 | goto err; |
| 997 | } |
| 998 | cq->ucontext = uctx; |
| 999 | err: |
| 1000 | return status; |
| 1001 | } |
| 1002 | |
| 1003 | struct ib_cq *ocrdma_create_cq(struct ib_device *ibdev, int entries, int vector, |
| 1004 | struct ib_ucontext *ib_ctx, |
| 1005 | struct ib_udata *udata) |
| 1006 | { |
| 1007 | struct ocrdma_cq *cq; |
| 1008 | struct ocrdma_dev *dev = get_ocrdma_dev(ibdev); |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 1009 | struct ocrdma_ucontext *uctx = NULL; |
| 1010 | u16 pd_id = 0; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1011 | int status; |
| 1012 | struct ocrdma_create_cq_ureq ureq; |
| 1013 | |
| 1014 | if (udata) { |
| 1015 | if (ib_copy_from_udata(&ureq, udata, sizeof(ureq))) |
| 1016 | return ERR_PTR(-EFAULT); |
| 1017 | } else |
| 1018 | ureq.dpp_cq = 0; |
| 1019 | cq = kzalloc(sizeof(*cq), GFP_KERNEL); |
| 1020 | if (!cq) |
| 1021 | return ERR_PTR(-ENOMEM); |
| 1022 | |
| 1023 | spin_lock_init(&cq->cq_lock); |
| 1024 | spin_lock_init(&cq->comp_handler_lock); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1025 | INIT_LIST_HEAD(&cq->sq_head); |
| 1026 | INIT_LIST_HEAD(&cq->rq_head); |
Devesh Sharma | ea617626 | 2014-02-04 11:56:54 +0530 | [diff] [blame] | 1027 | cq->first_arm = true; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1028 | |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 1029 | if (ib_ctx) { |
| 1030 | uctx = get_ocrdma_ucontext(ib_ctx); |
| 1031 | pd_id = uctx->cntxt_pd->id; |
| 1032 | } |
| 1033 | |
| 1034 | 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] | 1035 | if (status) { |
| 1036 | kfree(cq); |
| 1037 | return ERR_PTR(status); |
| 1038 | } |
| 1039 | if (ib_ctx) { |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 1040 | status = ocrdma_copy_cq_uresp(dev, cq, udata, ib_ctx); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1041 | if (status) |
| 1042 | goto ctx_err; |
| 1043 | } |
| 1044 | cq->phase = OCRDMA_CQE_VALID; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1045 | dev->cq_tbl[cq->id] = cq; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1046 | return &cq->ibcq; |
| 1047 | |
| 1048 | ctx_err: |
| 1049 | ocrdma_mbx_destroy_cq(dev, cq); |
| 1050 | kfree(cq); |
| 1051 | return ERR_PTR(status); |
| 1052 | } |
| 1053 | |
| 1054 | int ocrdma_resize_cq(struct ib_cq *ibcq, int new_cnt, |
| 1055 | struct ib_udata *udata) |
| 1056 | { |
| 1057 | int status = 0; |
| 1058 | struct ocrdma_cq *cq = get_ocrdma_cq(ibcq); |
| 1059 | |
| 1060 | if (new_cnt < 1 || new_cnt > cq->max_hw_cqe) { |
| 1061 | status = -EINVAL; |
| 1062 | return status; |
| 1063 | } |
| 1064 | ibcq->cqe = new_cnt; |
| 1065 | return status; |
| 1066 | } |
| 1067 | |
Devesh Sharma | ea617626 | 2014-02-04 11:56:54 +0530 | [diff] [blame] | 1068 | static void ocrdma_flush_cq(struct ocrdma_cq *cq) |
| 1069 | { |
| 1070 | int cqe_cnt; |
| 1071 | int valid_count = 0; |
| 1072 | unsigned long flags; |
| 1073 | |
| 1074 | struct ocrdma_dev *dev = get_ocrdma_dev(cq->ibcq.device); |
| 1075 | struct ocrdma_cqe *cqe = NULL; |
| 1076 | |
| 1077 | cqe = cq->va; |
| 1078 | cqe_cnt = cq->cqe_cnt; |
| 1079 | |
| 1080 | /* Last irq might have scheduled a polling thread |
| 1081 | * sync-up with it before hard flushing. |
| 1082 | */ |
| 1083 | spin_lock_irqsave(&cq->cq_lock, flags); |
| 1084 | while (cqe_cnt) { |
| 1085 | if (is_cqe_valid(cq, cqe)) |
| 1086 | valid_count++; |
| 1087 | cqe++; |
| 1088 | cqe_cnt--; |
| 1089 | } |
| 1090 | ocrdma_ring_cq_db(dev, cq->id, false, false, valid_count); |
| 1091 | spin_unlock_irqrestore(&cq->cq_lock, flags); |
| 1092 | } |
| 1093 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1094 | int ocrdma_destroy_cq(struct ib_cq *ibcq) |
| 1095 | { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1096 | struct ocrdma_cq *cq = get_ocrdma_cq(ibcq); |
Devesh Sharma | ea617626 | 2014-02-04 11:56:54 +0530 | [diff] [blame] | 1097 | struct ocrdma_eq *eq = NULL; |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 1098 | struct ocrdma_dev *dev = get_ocrdma_dev(ibcq->device); |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 1099 | int pdid = 0; |
Devesh Sharma | ea617626 | 2014-02-04 11:56:54 +0530 | [diff] [blame] | 1100 | u32 irq, indx; |
| 1101 | |
| 1102 | dev->cq_tbl[cq->id] = NULL; |
| 1103 | indx = ocrdma_get_eq_table_index(dev, cq->eqn); |
| 1104 | if (indx == -EINVAL) |
| 1105 | BUG(); |
| 1106 | |
| 1107 | eq = &dev->eq_tbl[indx]; |
| 1108 | irq = ocrdma_get_irq(dev, eq); |
| 1109 | synchronize_irq(irq); |
| 1110 | ocrdma_flush_cq(cq); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1111 | |
Mitesh Ahuja | 4b8180a | 2014-12-18 14:13:01 +0530 | [diff] [blame] | 1112 | (void)ocrdma_mbx_destroy_cq(dev, cq); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1113 | if (cq->ucontext) { |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 1114 | pdid = cq->ucontext->cntxt_pd->id; |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1115 | ocrdma_del_mmap(cq->ucontext, (u64) cq->pa, |
| 1116 | PAGE_ALIGN(cq->len)); |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 1117 | ocrdma_del_mmap(cq->ucontext, |
| 1118 | ocrdma_get_db_addr(dev, pdid), |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1119 | dev->nic_info.db_page_size); |
| 1120 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1121 | |
| 1122 | kfree(cq); |
Mitesh Ahuja | 4b8180a | 2014-12-18 14:13:01 +0530 | [diff] [blame] | 1123 | return 0; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1124 | } |
| 1125 | |
| 1126 | static int ocrdma_add_qpn_map(struct ocrdma_dev *dev, struct ocrdma_qp *qp) |
| 1127 | { |
| 1128 | int status = -EINVAL; |
| 1129 | |
| 1130 | if (qp->id < OCRDMA_MAX_QP && dev->qp_tbl[qp->id] == NULL) { |
| 1131 | dev->qp_tbl[qp->id] = qp; |
| 1132 | status = 0; |
| 1133 | } |
| 1134 | return status; |
| 1135 | } |
| 1136 | |
| 1137 | static void ocrdma_del_qpn_map(struct ocrdma_dev *dev, struct ocrdma_qp *qp) |
| 1138 | { |
| 1139 | dev->qp_tbl[qp->id] = NULL; |
| 1140 | } |
| 1141 | |
| 1142 | static int ocrdma_check_qp_params(struct ib_pd *ibpd, struct ocrdma_dev *dev, |
| 1143 | struct ib_qp_init_attr *attrs) |
| 1144 | { |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1145 | if ((attrs->qp_type != IB_QPT_GSI) && |
| 1146 | (attrs->qp_type != IB_QPT_RC) && |
| 1147 | (attrs->qp_type != IB_QPT_UC) && |
| 1148 | (attrs->qp_type != IB_QPT_UD)) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1149 | pr_err("%s(%d) unsupported qp type=0x%x requested\n", |
| 1150 | __func__, dev->id, attrs->qp_type); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1151 | return -EINVAL; |
| 1152 | } |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1153 | /* Skip the check for QP1 to support CM size of 128 */ |
| 1154 | if ((attrs->qp_type != IB_QPT_GSI) && |
| 1155 | (attrs->cap.max_send_wr > dev->attr.max_wqe)) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1156 | pr_err("%s(%d) unsupported send_wr=0x%x requested\n", |
| 1157 | __func__, dev->id, attrs->cap.max_send_wr); |
| 1158 | pr_err("%s(%d) supported send_wr=0x%x\n", |
| 1159 | __func__, dev->id, dev->attr.max_wqe); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1160 | return -EINVAL; |
| 1161 | } |
| 1162 | if (!attrs->srq && (attrs->cap.max_recv_wr > dev->attr.max_rqe)) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1163 | pr_err("%s(%d) unsupported recv_wr=0x%x requested\n", |
| 1164 | __func__, dev->id, attrs->cap.max_recv_wr); |
| 1165 | pr_err("%s(%d) supported recv_wr=0x%x\n", |
| 1166 | __func__, dev->id, dev->attr.max_rqe); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1167 | return -EINVAL; |
| 1168 | } |
| 1169 | if (attrs->cap.max_inline_data > dev->attr.max_inline_data) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1170 | pr_err("%s(%d) unsupported inline data size=0x%x requested\n", |
| 1171 | __func__, dev->id, attrs->cap.max_inline_data); |
| 1172 | pr_err("%s(%d) supported inline data size=0x%x\n", |
| 1173 | __func__, dev->id, dev->attr.max_inline_data); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1174 | return -EINVAL; |
| 1175 | } |
| 1176 | if (attrs->cap.max_send_sge > dev->attr.max_send_sge) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1177 | pr_err("%s(%d) unsupported send_sge=0x%x requested\n", |
| 1178 | __func__, dev->id, attrs->cap.max_send_sge); |
| 1179 | pr_err("%s(%d) supported send_sge=0x%x\n", |
| 1180 | __func__, dev->id, dev->attr.max_send_sge); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1181 | return -EINVAL; |
| 1182 | } |
| 1183 | if (attrs->cap.max_recv_sge > dev->attr.max_recv_sge) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1184 | pr_err("%s(%d) unsupported recv_sge=0x%x requested\n", |
| 1185 | __func__, dev->id, attrs->cap.max_recv_sge); |
| 1186 | pr_err("%s(%d) supported recv_sge=0x%x\n", |
| 1187 | __func__, dev->id, dev->attr.max_recv_sge); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1188 | return -EINVAL; |
| 1189 | } |
| 1190 | /* unprivileged user space cannot create special QP */ |
| 1191 | if (ibpd->uobject && attrs->qp_type == IB_QPT_GSI) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1192 | pr_err |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1193 | ("%s(%d) Userspace can't create special QPs of type=0x%x\n", |
| 1194 | __func__, dev->id, attrs->qp_type); |
| 1195 | return -EINVAL; |
| 1196 | } |
| 1197 | /* allow creating only one GSI type of QP */ |
| 1198 | if (attrs->qp_type == IB_QPT_GSI && dev->gsi_qp_created) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1199 | pr_err("%s(%d) GSI special QPs already created.\n", |
| 1200 | __func__, dev->id); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1201 | return -EINVAL; |
| 1202 | } |
| 1203 | /* verify consumer QPs are not trying to use GSI QP's CQ */ |
| 1204 | if ((attrs->qp_type != IB_QPT_GSI) && (dev->gsi_qp_created)) { |
| 1205 | if ((dev->gsi_sqcq == get_ocrdma_cq(attrs->send_cq)) || |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1206 | (dev->gsi_rqcq == get_ocrdma_cq(attrs->recv_cq))) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1207 | pr_err("%s(%d) Consumer QP cannot use GSI CQs.\n", |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1208 | __func__, dev->id); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1209 | return -EINVAL; |
| 1210 | } |
| 1211 | } |
| 1212 | return 0; |
| 1213 | } |
| 1214 | |
| 1215 | static int ocrdma_copy_qp_uresp(struct ocrdma_qp *qp, |
| 1216 | struct ib_udata *udata, int dpp_offset, |
| 1217 | int dpp_credit_lmt, int srq) |
| 1218 | { |
| 1219 | int status = 0; |
| 1220 | u64 usr_db; |
| 1221 | struct ocrdma_create_qp_uresp uresp; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1222 | struct ocrdma_pd *pd = qp->pd; |
Mitesh Ahuja | d2b8f7b | 2014-12-18 14:13:06 +0530 | [diff] [blame] | 1223 | struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1224 | |
| 1225 | memset(&uresp, 0, sizeof(uresp)); |
| 1226 | usr_db = dev->nic_info.unmapped_db + |
| 1227 | (pd->id * dev->nic_info.db_page_size); |
| 1228 | uresp.qp_id = qp->id; |
| 1229 | uresp.sq_dbid = qp->sq.dbid; |
| 1230 | uresp.num_sq_pages = 1; |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1231 | uresp.sq_page_size = PAGE_ALIGN(qp->sq.len); |
Devesh Sharma | 1b76d38 | 2014-09-05 19:35:40 +0530 | [diff] [blame] | 1232 | uresp.sq_page_addr[0] = virt_to_phys(qp->sq.va); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1233 | uresp.num_wqe_allocated = qp->sq.max_cnt; |
| 1234 | if (!srq) { |
| 1235 | uresp.rq_dbid = qp->rq.dbid; |
| 1236 | uresp.num_rq_pages = 1; |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1237 | uresp.rq_page_size = PAGE_ALIGN(qp->rq.len); |
Devesh Sharma | 1b76d38 | 2014-09-05 19:35:40 +0530 | [diff] [blame] | 1238 | uresp.rq_page_addr[0] = virt_to_phys(qp->rq.va); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1239 | uresp.num_rqe_allocated = qp->rq.max_cnt; |
| 1240 | } |
| 1241 | uresp.db_page_addr = usr_db; |
| 1242 | uresp.db_page_size = dev->nic_info.db_page_size; |
Devesh Sharma | 2df84fa8 | 2014-02-04 11:56:55 +0530 | [diff] [blame] | 1243 | uresp.db_sq_offset = OCRDMA_DB_GEN2_SQ_OFFSET; |
| 1244 | uresp.db_rq_offset = OCRDMA_DB_GEN2_RQ_OFFSET; |
| 1245 | uresp.db_shift = OCRDMA_DB_RQ_SHIFT; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1246 | |
| 1247 | if (qp->dpp_enabled) { |
| 1248 | uresp.dpp_credit = dpp_credit_lmt; |
| 1249 | uresp.dpp_offset = dpp_offset; |
| 1250 | } |
| 1251 | status = ib_copy_to_udata(udata, &uresp, sizeof(uresp)); |
| 1252 | if (status) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1253 | pr_err("%s(%d) user copy error.\n", __func__, dev->id); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1254 | goto err; |
| 1255 | } |
| 1256 | status = ocrdma_add_mmap(pd->uctx, uresp.sq_page_addr[0], |
| 1257 | uresp.sq_page_size); |
| 1258 | if (status) |
| 1259 | goto err; |
| 1260 | |
| 1261 | if (!srq) { |
| 1262 | status = ocrdma_add_mmap(pd->uctx, uresp.rq_page_addr[0], |
| 1263 | uresp.rq_page_size); |
| 1264 | if (status) |
| 1265 | goto rq_map_err; |
| 1266 | } |
| 1267 | return status; |
| 1268 | rq_map_err: |
| 1269 | ocrdma_del_mmap(pd->uctx, uresp.sq_page_addr[0], uresp.sq_page_size); |
| 1270 | err: |
| 1271 | return status; |
| 1272 | } |
| 1273 | |
| 1274 | static void ocrdma_set_qp_db(struct ocrdma_dev *dev, struct ocrdma_qp *qp, |
| 1275 | struct ocrdma_pd *pd) |
| 1276 | { |
Devesh Sharma | 21c3391 | 2014-02-04 11:56:56 +0530 | [diff] [blame] | 1277 | if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1278 | qp->sq_db = dev->nic_info.db + |
| 1279 | (pd->id * dev->nic_info.db_page_size) + |
| 1280 | OCRDMA_DB_GEN2_SQ_OFFSET; |
| 1281 | qp->rq_db = dev->nic_info.db + |
| 1282 | (pd->id * dev->nic_info.db_page_size) + |
Naresh Gottumukkala | f11220e | 2013-08-26 15:27:42 +0530 | [diff] [blame] | 1283 | OCRDMA_DB_GEN2_RQ_OFFSET; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1284 | } else { |
| 1285 | qp->sq_db = dev->nic_info.db + |
| 1286 | (pd->id * dev->nic_info.db_page_size) + |
| 1287 | OCRDMA_DB_SQ_OFFSET; |
| 1288 | qp->rq_db = dev->nic_info.db + |
| 1289 | (pd->id * dev->nic_info.db_page_size) + |
| 1290 | OCRDMA_DB_RQ_OFFSET; |
| 1291 | } |
| 1292 | } |
| 1293 | |
| 1294 | static int ocrdma_alloc_wr_id_tbl(struct ocrdma_qp *qp) |
| 1295 | { |
| 1296 | qp->wqe_wr_id_tbl = |
| 1297 | kzalloc(sizeof(*(qp->wqe_wr_id_tbl)) * qp->sq.max_cnt, |
| 1298 | GFP_KERNEL); |
| 1299 | if (qp->wqe_wr_id_tbl == NULL) |
| 1300 | return -ENOMEM; |
| 1301 | qp->rqe_wr_id_tbl = |
| 1302 | kzalloc(sizeof(u64) * qp->rq.max_cnt, GFP_KERNEL); |
| 1303 | if (qp->rqe_wr_id_tbl == NULL) |
| 1304 | return -ENOMEM; |
| 1305 | |
| 1306 | return 0; |
| 1307 | } |
| 1308 | |
| 1309 | static void ocrdma_set_qp_init_params(struct ocrdma_qp *qp, |
| 1310 | struct ocrdma_pd *pd, |
| 1311 | struct ib_qp_init_attr *attrs) |
| 1312 | { |
| 1313 | qp->pd = pd; |
| 1314 | spin_lock_init(&qp->q_lock); |
| 1315 | INIT_LIST_HEAD(&qp->sq_entry); |
| 1316 | INIT_LIST_HEAD(&qp->rq_entry); |
| 1317 | |
| 1318 | qp->qp_type = attrs->qp_type; |
| 1319 | qp->cap_flags = OCRDMA_QP_INB_RD | OCRDMA_QP_INB_WR; |
| 1320 | qp->max_inline_data = attrs->cap.max_inline_data; |
| 1321 | qp->sq.max_sges = attrs->cap.max_send_sge; |
| 1322 | qp->rq.max_sges = attrs->cap.max_recv_sge; |
| 1323 | qp->state = OCRDMA_QPS_RST; |
Naresh Gottumukkala | 2b51a9b | 2013-08-26 15:27:43 +0530 | [diff] [blame] | 1324 | qp->signaled = (attrs->sq_sig_type == IB_SIGNAL_ALL_WR) ? true : false; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1325 | } |
| 1326 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1327 | static void ocrdma_store_gsi_qp_cq(struct ocrdma_dev *dev, |
| 1328 | struct ib_qp_init_attr *attrs) |
| 1329 | { |
| 1330 | if (attrs->qp_type == IB_QPT_GSI) { |
| 1331 | dev->gsi_qp_created = 1; |
| 1332 | dev->gsi_sqcq = get_ocrdma_cq(attrs->send_cq); |
| 1333 | dev->gsi_rqcq = get_ocrdma_cq(attrs->recv_cq); |
| 1334 | } |
| 1335 | } |
| 1336 | |
| 1337 | struct ib_qp *ocrdma_create_qp(struct ib_pd *ibpd, |
| 1338 | struct ib_qp_init_attr *attrs, |
| 1339 | struct ib_udata *udata) |
| 1340 | { |
| 1341 | int status; |
| 1342 | struct ocrdma_pd *pd = get_ocrdma_pd(ibpd); |
| 1343 | struct ocrdma_qp *qp; |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 1344 | struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1345 | struct ocrdma_create_qp_ureq ureq; |
| 1346 | u16 dpp_credit_lmt, dpp_offset; |
| 1347 | |
| 1348 | status = ocrdma_check_qp_params(ibpd, dev, attrs); |
| 1349 | if (status) |
| 1350 | goto gen_err; |
| 1351 | |
| 1352 | memset(&ureq, 0, sizeof(ureq)); |
| 1353 | if (udata) { |
| 1354 | if (ib_copy_from_udata(&ureq, udata, sizeof(ureq))) |
| 1355 | return ERR_PTR(-EFAULT); |
| 1356 | } |
| 1357 | qp = kzalloc(sizeof(*qp), GFP_KERNEL); |
| 1358 | if (!qp) { |
| 1359 | status = -ENOMEM; |
| 1360 | goto gen_err; |
| 1361 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1362 | ocrdma_set_qp_init_params(qp, pd, attrs); |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1363 | if (udata == NULL) |
| 1364 | qp->cap_flags |= (OCRDMA_QP_MW_BIND | OCRDMA_QP_LKEY0 | |
| 1365 | OCRDMA_QP_FAST_REG); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1366 | |
| 1367 | mutex_lock(&dev->dev_lock); |
| 1368 | status = ocrdma_mbx_create_qp(qp, attrs, ureq.enable_dpp_cq, |
| 1369 | ureq.dpp_cq_id, |
| 1370 | &dpp_offset, &dpp_credit_lmt); |
| 1371 | if (status) |
| 1372 | goto mbx_err; |
| 1373 | |
| 1374 | /* user space QP's wr_id table are managed in library */ |
| 1375 | if (udata == NULL) { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1376 | status = ocrdma_alloc_wr_id_tbl(qp); |
| 1377 | if (status) |
| 1378 | goto map_err; |
| 1379 | } |
| 1380 | |
| 1381 | status = ocrdma_add_qpn_map(dev, qp); |
| 1382 | if (status) |
| 1383 | goto map_err; |
| 1384 | ocrdma_set_qp_db(dev, qp, pd); |
| 1385 | if (udata) { |
| 1386 | status = ocrdma_copy_qp_uresp(qp, udata, dpp_offset, |
| 1387 | dpp_credit_lmt, |
| 1388 | (attrs->srq != NULL)); |
| 1389 | if (status) |
| 1390 | goto cpy_err; |
| 1391 | } |
| 1392 | ocrdma_store_gsi_qp_cq(dev, attrs); |
Gottumukkala, Naresh | 27159f5 | 2013-06-05 08:50:46 +0000 | [diff] [blame] | 1393 | qp->ibqp.qp_num = qp->id; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1394 | mutex_unlock(&dev->dev_lock); |
| 1395 | return &qp->ibqp; |
| 1396 | |
| 1397 | cpy_err: |
| 1398 | ocrdma_del_qpn_map(dev, qp); |
| 1399 | map_err: |
| 1400 | ocrdma_mbx_destroy_qp(dev, qp); |
| 1401 | mbx_err: |
| 1402 | mutex_unlock(&dev->dev_lock); |
| 1403 | kfree(qp->wqe_wr_id_tbl); |
| 1404 | kfree(qp->rqe_wr_id_tbl); |
| 1405 | kfree(qp); |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1406 | pr_err("%s(%d) error=%d\n", __func__, dev->id, status); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1407 | gen_err: |
| 1408 | return ERR_PTR(status); |
| 1409 | } |
| 1410 | |
| 1411 | int _ocrdma_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, |
| 1412 | int attr_mask) |
| 1413 | { |
| 1414 | int status = 0; |
| 1415 | struct ocrdma_qp *qp; |
| 1416 | struct ocrdma_dev *dev; |
| 1417 | enum ib_qp_state old_qps; |
| 1418 | |
| 1419 | qp = get_ocrdma_qp(ibqp); |
Mitesh Ahuja | d2b8f7b | 2014-12-18 14:13:06 +0530 | [diff] [blame] | 1420 | dev = get_ocrdma_dev(ibqp->device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1421 | if (attr_mask & IB_QP_STATE) |
Naresh Gottumukkala | 057729c | 2013-08-07 12:52:35 +0530 | [diff] [blame] | 1422 | status = ocrdma_qp_state_change(qp, attr->qp_state, &old_qps); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1423 | /* if new and previous states are same hw doesn't need to |
| 1424 | * know about it. |
| 1425 | */ |
| 1426 | if (status < 0) |
| 1427 | return status; |
Prarit Bhargava | bc1b04a | 2014-02-19 15:05:16 -0500 | [diff] [blame] | 1428 | status = ocrdma_mbx_modify_qp(dev, qp, attr, attr_mask); |
Naresh Gottumukkala | 45e86b3 | 2013-08-07 12:52:37 +0530 | [diff] [blame] | 1429 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1430 | return status; |
| 1431 | } |
| 1432 | |
| 1433 | int ocrdma_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, |
| 1434 | int attr_mask, struct ib_udata *udata) |
| 1435 | { |
| 1436 | unsigned long flags; |
| 1437 | int status = -EINVAL; |
| 1438 | struct ocrdma_qp *qp; |
| 1439 | struct ocrdma_dev *dev; |
| 1440 | enum ib_qp_state old_qps, new_qps; |
| 1441 | |
| 1442 | qp = get_ocrdma_qp(ibqp); |
Mitesh Ahuja | d2b8f7b | 2014-12-18 14:13:06 +0530 | [diff] [blame] | 1443 | dev = get_ocrdma_dev(ibqp->device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1444 | |
| 1445 | /* syncronize with multiple context trying to change, retrive qps */ |
| 1446 | mutex_lock(&dev->dev_lock); |
| 1447 | /* syncronize with wqe, rqe posting and cqe processing contexts */ |
| 1448 | spin_lock_irqsave(&qp->q_lock, flags); |
| 1449 | old_qps = get_ibqp_state(qp->state); |
| 1450 | if (attr_mask & IB_QP_STATE) |
| 1451 | new_qps = attr->qp_state; |
| 1452 | else |
| 1453 | new_qps = old_qps; |
| 1454 | spin_unlock_irqrestore(&qp->q_lock, flags); |
| 1455 | |
Matan Barak | dd5f03b | 2013-12-12 18:03:11 +0200 | [diff] [blame] | 1456 | if (!ib_modify_qp_is_ok(old_qps, new_qps, ibqp->qp_type, attr_mask, |
Moni Shoua | 37721d8 | 2013-12-12 18:03:16 +0200 | [diff] [blame] | 1457 | IB_LINK_LAYER_ETHERNET)) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1458 | pr_err("%s(%d) invalid attribute mask=0x%x specified for\n" |
| 1459 | "qpn=0x%x of type=0x%x old_qps=0x%x, new_qps=0x%x\n", |
| 1460 | __func__, dev->id, attr_mask, qp->id, ibqp->qp_type, |
| 1461 | old_qps, new_qps); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1462 | goto param_err; |
| 1463 | } |
| 1464 | |
| 1465 | status = _ocrdma_modify_qp(ibqp, attr, attr_mask); |
| 1466 | if (status > 0) |
| 1467 | status = 0; |
| 1468 | param_err: |
| 1469 | mutex_unlock(&dev->dev_lock); |
| 1470 | return status; |
| 1471 | } |
| 1472 | |
| 1473 | static enum ib_mtu ocrdma_mtu_int_to_enum(u16 mtu) |
| 1474 | { |
| 1475 | switch (mtu) { |
| 1476 | case 256: |
| 1477 | return IB_MTU_256; |
| 1478 | case 512: |
| 1479 | return IB_MTU_512; |
| 1480 | case 1024: |
| 1481 | return IB_MTU_1024; |
| 1482 | case 2048: |
| 1483 | return IB_MTU_2048; |
| 1484 | case 4096: |
| 1485 | return IB_MTU_4096; |
| 1486 | default: |
| 1487 | return IB_MTU_1024; |
| 1488 | } |
| 1489 | } |
| 1490 | |
| 1491 | static int ocrdma_to_ib_qp_acc_flags(int qp_cap_flags) |
| 1492 | { |
| 1493 | int ib_qp_acc_flags = 0; |
| 1494 | |
| 1495 | if (qp_cap_flags & OCRDMA_QP_INB_WR) |
| 1496 | ib_qp_acc_flags |= IB_ACCESS_REMOTE_WRITE; |
| 1497 | if (qp_cap_flags & OCRDMA_QP_INB_RD) |
| 1498 | ib_qp_acc_flags |= IB_ACCESS_LOCAL_WRITE; |
| 1499 | return ib_qp_acc_flags; |
| 1500 | } |
| 1501 | |
| 1502 | int ocrdma_query_qp(struct ib_qp *ibqp, |
| 1503 | struct ib_qp_attr *qp_attr, |
| 1504 | int attr_mask, struct ib_qp_init_attr *qp_init_attr) |
| 1505 | { |
| 1506 | int status; |
| 1507 | u32 qp_state; |
| 1508 | struct ocrdma_qp_params params; |
| 1509 | struct ocrdma_qp *qp = get_ocrdma_qp(ibqp); |
Mitesh Ahuja | d2b8f7b | 2014-12-18 14:13:06 +0530 | [diff] [blame] | 1510 | struct ocrdma_dev *dev = get_ocrdma_dev(ibqp->device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1511 | |
| 1512 | memset(¶ms, 0, sizeof(params)); |
| 1513 | mutex_lock(&dev->dev_lock); |
| 1514 | status = ocrdma_mbx_query_qp(dev, qp, ¶ms); |
| 1515 | mutex_unlock(&dev->dev_lock); |
| 1516 | if (status) |
| 1517 | goto mbx_err; |
Mitesh Ahuja | 95bf009 | 2014-12-03 11:36:33 +0530 | [diff] [blame] | 1518 | if (qp->qp_type == IB_QPT_UD) |
| 1519 | qp_attr->qkey = params.qkey; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1520 | qp_attr->path_mtu = |
| 1521 | ocrdma_mtu_int_to_enum(params.path_mtu_pkey_indx & |
| 1522 | OCRDMA_QP_PARAMS_PATH_MTU_MASK) >> |
| 1523 | OCRDMA_QP_PARAMS_PATH_MTU_SHIFT; |
| 1524 | qp_attr->path_mig_state = IB_MIG_MIGRATED; |
| 1525 | qp_attr->rq_psn = params.hop_lmt_rq_psn & OCRDMA_QP_PARAMS_RQ_PSN_MASK; |
| 1526 | qp_attr->sq_psn = params.tclass_sq_psn & OCRDMA_QP_PARAMS_SQ_PSN_MASK; |
| 1527 | qp_attr->dest_qp_num = |
| 1528 | params.ack_to_rnr_rtc_dest_qpn & OCRDMA_QP_PARAMS_DEST_QPN_MASK; |
| 1529 | |
| 1530 | qp_attr->qp_access_flags = ocrdma_to_ib_qp_acc_flags(qp->cap_flags); |
| 1531 | qp_attr->cap.max_send_wr = qp->sq.max_cnt - 1; |
| 1532 | qp_attr->cap.max_recv_wr = qp->rq.max_cnt - 1; |
| 1533 | qp_attr->cap.max_send_sge = qp->sq.max_sges; |
| 1534 | qp_attr->cap.max_recv_sge = qp->rq.max_sges; |
Naresh Gottumukkala | c43e9ab | 2013-08-26 15:27:46 +0530 | [diff] [blame] | 1535 | qp_attr->cap.max_inline_data = qp->max_inline_data; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1536 | qp_init_attr->cap = qp_attr->cap; |
| 1537 | memcpy(&qp_attr->ah_attr.grh.dgid, ¶ms.dgid[0], |
| 1538 | sizeof(params.dgid)); |
| 1539 | qp_attr->ah_attr.grh.flow_label = params.rnt_rc_sl_fl & |
| 1540 | OCRDMA_QP_PARAMS_FLOW_LABEL_MASK; |
| 1541 | qp_attr->ah_attr.grh.sgid_index = qp->sgid_idx; |
| 1542 | qp_attr->ah_attr.grh.hop_limit = (params.hop_lmt_rq_psn & |
| 1543 | OCRDMA_QP_PARAMS_HOP_LMT_MASK) >> |
| 1544 | OCRDMA_QP_PARAMS_HOP_LMT_SHIFT; |
| 1545 | qp_attr->ah_attr.grh.traffic_class = (params.tclass_sq_psn & |
Devesh Sharma | a61d93d | 2014-02-10 13:48:58 +0530 | [diff] [blame] | 1546 | OCRDMA_QP_PARAMS_TCLASS_MASK) >> |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1547 | OCRDMA_QP_PARAMS_TCLASS_SHIFT; |
| 1548 | |
| 1549 | qp_attr->ah_attr.ah_flags = IB_AH_GRH; |
| 1550 | qp_attr->ah_attr.port_num = 1; |
| 1551 | qp_attr->ah_attr.sl = (params.rnt_rc_sl_fl & |
| 1552 | OCRDMA_QP_PARAMS_SL_MASK) >> |
| 1553 | OCRDMA_QP_PARAMS_SL_SHIFT; |
| 1554 | qp_attr->timeout = (params.ack_to_rnr_rtc_dest_qpn & |
| 1555 | OCRDMA_QP_PARAMS_ACK_TIMEOUT_MASK) >> |
| 1556 | OCRDMA_QP_PARAMS_ACK_TIMEOUT_SHIFT; |
| 1557 | qp_attr->rnr_retry = (params.ack_to_rnr_rtc_dest_qpn & |
| 1558 | OCRDMA_QP_PARAMS_RNR_RETRY_CNT_MASK) >> |
| 1559 | OCRDMA_QP_PARAMS_RNR_RETRY_CNT_SHIFT; |
| 1560 | qp_attr->retry_cnt = |
| 1561 | (params.rnt_rc_sl_fl & OCRDMA_QP_PARAMS_RETRY_CNT_MASK) >> |
| 1562 | OCRDMA_QP_PARAMS_RETRY_CNT_SHIFT; |
| 1563 | qp_attr->min_rnr_timer = 0; |
| 1564 | qp_attr->pkey_index = 0; |
| 1565 | qp_attr->port_num = 1; |
| 1566 | qp_attr->ah_attr.src_path_bits = 0; |
| 1567 | qp_attr->ah_attr.static_rate = 0; |
| 1568 | qp_attr->alt_pkey_index = 0; |
| 1569 | qp_attr->alt_port_num = 0; |
| 1570 | qp_attr->alt_timeout = 0; |
| 1571 | memset(&qp_attr->alt_ah_attr, 0, sizeof(qp_attr->alt_ah_attr)); |
| 1572 | qp_state = (params.max_sge_recv_flags & OCRDMA_QP_PARAMS_STATE_MASK) >> |
| 1573 | OCRDMA_QP_PARAMS_STATE_SHIFT; |
Padmanabh Ratnakar | 43c706b | 2014-12-18 14:13:00 +0530 | [diff] [blame] | 1574 | qp_attr->qp_state = get_ibqp_state(qp_state); |
| 1575 | qp_attr->cur_qp_state = qp_attr->qp_state; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1576 | qp_attr->sq_draining = (qp_state == OCRDMA_QPS_SQ_DRAINING) ? 1 : 0; |
| 1577 | qp_attr->max_dest_rd_atomic = |
| 1578 | params.max_ord_ird >> OCRDMA_QP_PARAMS_MAX_ORD_SHIFT; |
| 1579 | qp_attr->max_rd_atomic = |
| 1580 | params.max_ord_ird & OCRDMA_QP_PARAMS_MAX_IRD_MASK; |
| 1581 | qp_attr->en_sqd_async_notify = (params.max_sge_recv_flags & |
| 1582 | OCRDMA_QP_PARAMS_FLAGS_SQD_ASYNC) ? 1 : 0; |
Padmanabh Ratnakar | 43c706b | 2014-12-18 14:13:00 +0530 | [diff] [blame] | 1583 | /* Sync driver QP state with FW */ |
| 1584 | ocrdma_qp_state_change(qp, qp_attr->qp_state, NULL); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1585 | mbx_err: |
| 1586 | return status; |
| 1587 | } |
| 1588 | |
Rasmus Villemoes | f3070e7 | 2015-01-16 15:39:56 +0100 | [diff] [blame] | 1589 | static void ocrdma_srq_toggle_bit(struct ocrdma_srq *srq, unsigned int idx) |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1590 | { |
Rasmus Villemoes | f3070e7 | 2015-01-16 15:39:56 +0100 | [diff] [blame] | 1591 | unsigned int i = idx / 32; |
| 1592 | u32 mask = (1U << (idx % 32)); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1593 | |
Rasmus Villemoes | ba64fdc | 2015-01-16 15:39:55 +0100 | [diff] [blame] | 1594 | srq->idx_bit_fields[i] ^= mask; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1595 | } |
| 1596 | |
| 1597 | static int ocrdma_hwq_free_cnt(struct ocrdma_qp_hwq_info *q) |
| 1598 | { |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1599 | return ((q->max_wqe_idx - q->head) + q->tail) % q->max_cnt; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1600 | } |
| 1601 | |
| 1602 | static int is_hw_sq_empty(struct ocrdma_qp *qp) |
| 1603 | { |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1604 | return (qp->sq.tail == qp->sq.head); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1605 | } |
| 1606 | |
| 1607 | static int is_hw_rq_empty(struct ocrdma_qp *qp) |
| 1608 | { |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1609 | return (qp->rq.tail == qp->rq.head); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1610 | } |
| 1611 | |
| 1612 | static void *ocrdma_hwq_head(struct ocrdma_qp_hwq_info *q) |
| 1613 | { |
| 1614 | return q->va + (q->head * q->entry_size); |
| 1615 | } |
| 1616 | |
| 1617 | static void *ocrdma_hwq_head_from_idx(struct ocrdma_qp_hwq_info *q, |
| 1618 | u32 idx) |
| 1619 | { |
| 1620 | return q->va + (idx * q->entry_size); |
| 1621 | } |
| 1622 | |
| 1623 | static void ocrdma_hwq_inc_head(struct ocrdma_qp_hwq_info *q) |
| 1624 | { |
| 1625 | q->head = (q->head + 1) & q->max_wqe_idx; |
| 1626 | } |
| 1627 | |
| 1628 | static void ocrdma_hwq_inc_tail(struct ocrdma_qp_hwq_info *q) |
| 1629 | { |
| 1630 | q->tail = (q->tail + 1) & q->max_wqe_idx; |
| 1631 | } |
| 1632 | |
| 1633 | /* discard the cqe for a given QP */ |
| 1634 | static void ocrdma_discard_cqes(struct ocrdma_qp *qp, struct ocrdma_cq *cq) |
| 1635 | { |
| 1636 | unsigned long cq_flags; |
| 1637 | unsigned long flags; |
| 1638 | int discard_cnt = 0; |
| 1639 | u32 cur_getp, stop_getp; |
| 1640 | struct ocrdma_cqe *cqe; |
Selvin Xavier | cf5788a | 2014-02-04 11:57:03 +0530 | [diff] [blame] | 1641 | u32 qpn = 0, wqe_idx = 0; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1642 | |
| 1643 | spin_lock_irqsave(&cq->cq_lock, cq_flags); |
| 1644 | |
| 1645 | /* traverse through the CQEs in the hw CQ, |
| 1646 | * find the matching CQE for a given qp, |
| 1647 | * mark the matching one discarded by clearing qpn. |
| 1648 | * ring the doorbell in the poll_cq() as |
| 1649 | * we don't complete out of order cqe. |
| 1650 | */ |
| 1651 | |
| 1652 | cur_getp = cq->getp; |
| 1653 | /* find upto when do we reap the cq. */ |
| 1654 | stop_getp = cur_getp; |
| 1655 | do { |
| 1656 | if (is_hw_sq_empty(qp) && (!qp->srq && is_hw_rq_empty(qp))) |
| 1657 | break; |
| 1658 | |
| 1659 | cqe = cq->va + cur_getp; |
| 1660 | /* if (a) done reaping whole hw cq, or |
| 1661 | * (b) qp_xq becomes empty. |
| 1662 | * then exit |
| 1663 | */ |
| 1664 | qpn = cqe->cmn.qpn & OCRDMA_CQE_QPN_MASK; |
| 1665 | /* if previously discarded cqe found, skip that too. */ |
| 1666 | /* check for matching qp */ |
| 1667 | if (qpn == 0 || qpn != qp->id) |
| 1668 | goto skip_cqe; |
| 1669 | |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 1670 | if (is_cqe_for_sq(cqe)) { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1671 | ocrdma_hwq_inc_tail(&qp->sq); |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 1672 | } else { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1673 | if (qp->srq) { |
Selvin Xavier | cf5788a | 2014-02-04 11:57:03 +0530 | [diff] [blame] | 1674 | wqe_idx = (le32_to_cpu(cqe->rq.buftag_qpn) >> |
| 1675 | OCRDMA_CQE_BUFTAG_SHIFT) & |
| 1676 | qp->srq->rq.max_wqe_idx; |
| 1677 | if (wqe_idx < 1) |
| 1678 | BUG(); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1679 | spin_lock_irqsave(&qp->srq->q_lock, flags); |
| 1680 | ocrdma_hwq_inc_tail(&qp->srq->rq); |
Selvin Xavier | cf5788a | 2014-02-04 11:57:03 +0530 | [diff] [blame] | 1681 | ocrdma_srq_toggle_bit(qp->srq, wqe_idx - 1); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1682 | spin_unlock_irqrestore(&qp->srq->q_lock, flags); |
| 1683 | |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 1684 | } else { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1685 | ocrdma_hwq_inc_tail(&qp->rq); |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 1686 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1687 | } |
Selvin Xavier | cf5788a | 2014-02-04 11:57:03 +0530 | [diff] [blame] | 1688 | /* mark cqe discarded so that it is not picked up later |
| 1689 | * in the poll_cq(). |
| 1690 | */ |
| 1691 | discard_cnt += 1; |
| 1692 | cqe->cmn.qpn = 0; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1693 | skip_cqe: |
| 1694 | cur_getp = (cur_getp + 1) % cq->max_hw_cqe; |
| 1695 | } while (cur_getp != stop_getp); |
| 1696 | spin_unlock_irqrestore(&cq->cq_lock, cq_flags); |
| 1697 | } |
| 1698 | |
Naresh Gottumukkala | f11220e | 2013-08-26 15:27:42 +0530 | [diff] [blame] | 1699 | void ocrdma_del_flush_qp(struct ocrdma_qp *qp) |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1700 | { |
| 1701 | int found = false; |
| 1702 | unsigned long flags; |
Mitesh Ahuja | d2b8f7b | 2014-12-18 14:13:06 +0530 | [diff] [blame] | 1703 | struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1704 | /* sync with any active CQ poll */ |
| 1705 | |
| 1706 | spin_lock_irqsave(&dev->flush_q_lock, flags); |
| 1707 | found = ocrdma_is_qp_in_sq_flushlist(qp->sq_cq, qp); |
| 1708 | if (found) |
| 1709 | list_del(&qp->sq_entry); |
| 1710 | if (!qp->srq) { |
| 1711 | found = ocrdma_is_qp_in_rq_flushlist(qp->rq_cq, qp); |
| 1712 | if (found) |
| 1713 | list_del(&qp->rq_entry); |
| 1714 | } |
| 1715 | spin_unlock_irqrestore(&dev->flush_q_lock, flags); |
| 1716 | } |
| 1717 | |
| 1718 | int ocrdma_destroy_qp(struct ib_qp *ibqp) |
| 1719 | { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1720 | struct ocrdma_pd *pd; |
| 1721 | struct ocrdma_qp *qp; |
| 1722 | struct ocrdma_dev *dev; |
| 1723 | struct ib_qp_attr attrs; |
| 1724 | int attr_mask = IB_QP_STATE; |
Dan Carpenter | d19081e | 2012-05-02 09:14:47 +0300 | [diff] [blame] | 1725 | unsigned long flags; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1726 | |
| 1727 | qp = get_ocrdma_qp(ibqp); |
Mitesh Ahuja | d2b8f7b | 2014-12-18 14:13:06 +0530 | [diff] [blame] | 1728 | dev = get_ocrdma_dev(ibqp->device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1729 | |
| 1730 | attrs.qp_state = IB_QPS_ERR; |
| 1731 | pd = qp->pd; |
| 1732 | |
| 1733 | /* change the QP state to ERROR */ |
| 1734 | _ocrdma_modify_qp(ibqp, &attrs, attr_mask); |
| 1735 | |
| 1736 | /* ensure that CQEs for newly created QP (whose id may be same with |
| 1737 | * one which just getting destroyed are same), dont get |
| 1738 | * discarded until the old CQEs are discarded. |
| 1739 | */ |
| 1740 | mutex_lock(&dev->dev_lock); |
Mitesh Ahuja | 4b8180a | 2014-12-18 14:13:01 +0530 | [diff] [blame] | 1741 | (void) ocrdma_mbx_destroy_qp(dev, qp); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1742 | |
| 1743 | /* |
| 1744 | * acquire CQ lock while destroy is in progress, in order to |
| 1745 | * protect against proessing in-flight CQEs for this QP. |
| 1746 | */ |
Dan Carpenter | d19081e | 2012-05-02 09:14:47 +0300 | [diff] [blame] | 1747 | spin_lock_irqsave(&qp->sq_cq->cq_lock, flags); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1748 | if (qp->rq_cq && (qp->rq_cq != qp->sq_cq)) |
Dan Carpenter | d19081e | 2012-05-02 09:14:47 +0300 | [diff] [blame] | 1749 | spin_lock(&qp->rq_cq->cq_lock); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1750 | |
| 1751 | ocrdma_del_qpn_map(dev, qp); |
| 1752 | |
| 1753 | if (qp->rq_cq && (qp->rq_cq != qp->sq_cq)) |
Dan Carpenter | d19081e | 2012-05-02 09:14:47 +0300 | [diff] [blame] | 1754 | spin_unlock(&qp->rq_cq->cq_lock); |
| 1755 | spin_unlock_irqrestore(&qp->sq_cq->cq_lock, flags); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1756 | |
| 1757 | if (!pd->uctx) { |
| 1758 | ocrdma_discard_cqes(qp, qp->sq_cq); |
| 1759 | ocrdma_discard_cqes(qp, qp->rq_cq); |
| 1760 | } |
| 1761 | mutex_unlock(&dev->dev_lock); |
| 1762 | |
| 1763 | if (pd->uctx) { |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1764 | ocrdma_del_mmap(pd->uctx, (u64) qp->sq.pa, |
| 1765 | PAGE_ALIGN(qp->sq.len)); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1766 | if (!qp->srq) |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1767 | ocrdma_del_mmap(pd->uctx, (u64) qp->rq.pa, |
| 1768 | PAGE_ALIGN(qp->rq.len)); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1769 | } |
| 1770 | |
| 1771 | ocrdma_del_flush_qp(qp); |
| 1772 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1773 | kfree(qp->wqe_wr_id_tbl); |
| 1774 | kfree(qp->rqe_wr_id_tbl); |
| 1775 | kfree(qp); |
Mitesh Ahuja | 4b8180a | 2014-12-18 14:13:01 +0530 | [diff] [blame] | 1776 | return 0; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1777 | } |
| 1778 | |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 1779 | static int ocrdma_copy_srq_uresp(struct ocrdma_dev *dev, struct ocrdma_srq *srq, |
| 1780 | struct ib_udata *udata) |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1781 | { |
| 1782 | int status; |
| 1783 | struct ocrdma_create_srq_uresp uresp; |
| 1784 | |
Dan Carpenter | 63ea374 | 2013-07-29 22:34:29 +0300 | [diff] [blame] | 1785 | memset(&uresp, 0, sizeof(uresp)); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1786 | uresp.rq_dbid = srq->rq.dbid; |
| 1787 | uresp.num_rq_pages = 1; |
Devesh Sharma | 1b76d38 | 2014-09-05 19:35:40 +0530 | [diff] [blame] | 1788 | uresp.rq_page_addr[0] = virt_to_phys(srq->rq.va); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1789 | uresp.rq_page_size = srq->rq.len; |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 1790 | uresp.db_page_addr = dev->nic_info.unmapped_db + |
| 1791 | (srq->pd->id * dev->nic_info.db_page_size); |
| 1792 | uresp.db_page_size = dev->nic_info.db_page_size; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1793 | uresp.num_rqe_allocated = srq->rq.max_cnt; |
Devesh Sharma | 21c3391 | 2014-02-04 11:56:56 +0530 | [diff] [blame] | 1794 | if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) { |
Naresh Gottumukkala | f11220e | 2013-08-26 15:27:42 +0530 | [diff] [blame] | 1795 | uresp.db_rq_offset = OCRDMA_DB_GEN2_RQ_OFFSET; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1796 | uresp.db_shift = 24; |
| 1797 | } else { |
| 1798 | uresp.db_rq_offset = OCRDMA_DB_RQ_OFFSET; |
| 1799 | uresp.db_shift = 16; |
| 1800 | } |
| 1801 | |
| 1802 | status = ib_copy_to_udata(udata, &uresp, sizeof(uresp)); |
| 1803 | if (status) |
| 1804 | return status; |
| 1805 | status = ocrdma_add_mmap(srq->pd->uctx, uresp.rq_page_addr[0], |
| 1806 | uresp.rq_page_size); |
| 1807 | if (status) |
| 1808 | return status; |
| 1809 | return status; |
| 1810 | } |
| 1811 | |
| 1812 | struct ib_srq *ocrdma_create_srq(struct ib_pd *ibpd, |
| 1813 | struct ib_srq_init_attr *init_attr, |
| 1814 | struct ib_udata *udata) |
| 1815 | { |
| 1816 | int status = -ENOMEM; |
| 1817 | struct ocrdma_pd *pd = get_ocrdma_pd(ibpd); |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 1818 | struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1819 | struct ocrdma_srq *srq; |
| 1820 | |
| 1821 | if (init_attr->attr.max_sge > dev->attr.max_recv_sge) |
| 1822 | return ERR_PTR(-EINVAL); |
| 1823 | if (init_attr->attr.max_wr > dev->attr.max_rqe) |
| 1824 | return ERR_PTR(-EINVAL); |
| 1825 | |
| 1826 | srq = kzalloc(sizeof(*srq), GFP_KERNEL); |
| 1827 | if (!srq) |
| 1828 | return ERR_PTR(status); |
| 1829 | |
| 1830 | spin_lock_init(&srq->q_lock); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1831 | srq->pd = pd; |
| 1832 | 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] | 1833 | status = ocrdma_mbx_create_srq(dev, srq, init_attr, pd); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1834 | if (status) |
| 1835 | goto err; |
| 1836 | |
| 1837 | if (udata == NULL) { |
| 1838 | srq->rqe_wr_id_tbl = kzalloc(sizeof(u64) * srq->rq.max_cnt, |
| 1839 | GFP_KERNEL); |
| 1840 | if (srq->rqe_wr_id_tbl == NULL) |
| 1841 | goto arm_err; |
| 1842 | |
| 1843 | srq->bit_fields_len = (srq->rq.max_cnt / 32) + |
| 1844 | (srq->rq.max_cnt % 32 ? 1 : 0); |
| 1845 | srq->idx_bit_fields = |
| 1846 | kmalloc(srq->bit_fields_len * sizeof(u32), GFP_KERNEL); |
| 1847 | if (srq->idx_bit_fields == NULL) |
| 1848 | goto arm_err; |
| 1849 | memset(srq->idx_bit_fields, 0xff, |
| 1850 | srq->bit_fields_len * sizeof(u32)); |
| 1851 | } |
| 1852 | |
| 1853 | if (init_attr->attr.srq_limit) { |
| 1854 | status = ocrdma_mbx_modify_srq(srq, &init_attr->attr); |
| 1855 | if (status) |
| 1856 | goto arm_err; |
| 1857 | } |
| 1858 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1859 | if (udata) { |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 1860 | status = ocrdma_copy_srq_uresp(dev, srq, udata); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1861 | if (status) |
| 1862 | goto arm_err; |
| 1863 | } |
| 1864 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1865 | return &srq->ibsrq; |
| 1866 | |
| 1867 | arm_err: |
| 1868 | ocrdma_mbx_destroy_srq(dev, srq); |
| 1869 | err: |
| 1870 | kfree(srq->rqe_wr_id_tbl); |
| 1871 | kfree(srq->idx_bit_fields); |
| 1872 | kfree(srq); |
| 1873 | return ERR_PTR(status); |
| 1874 | } |
| 1875 | |
| 1876 | int ocrdma_modify_srq(struct ib_srq *ibsrq, |
| 1877 | struct ib_srq_attr *srq_attr, |
| 1878 | enum ib_srq_attr_mask srq_attr_mask, |
| 1879 | struct ib_udata *udata) |
| 1880 | { |
| 1881 | int status = 0; |
| 1882 | struct ocrdma_srq *srq; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1883 | |
| 1884 | srq = get_ocrdma_srq(ibsrq); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1885 | if (srq_attr_mask & IB_SRQ_MAX_WR) |
| 1886 | status = -EINVAL; |
| 1887 | else |
| 1888 | status = ocrdma_mbx_modify_srq(srq, srq_attr); |
| 1889 | return status; |
| 1890 | } |
| 1891 | |
| 1892 | int ocrdma_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr) |
| 1893 | { |
| 1894 | int status; |
| 1895 | struct ocrdma_srq *srq; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1896 | |
| 1897 | srq = get_ocrdma_srq(ibsrq); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1898 | status = ocrdma_mbx_query_srq(srq, srq_attr); |
| 1899 | return status; |
| 1900 | } |
| 1901 | |
| 1902 | int ocrdma_destroy_srq(struct ib_srq *ibsrq) |
| 1903 | { |
| 1904 | int status; |
| 1905 | struct ocrdma_srq *srq; |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 1906 | struct ocrdma_dev *dev = get_ocrdma_dev(ibsrq->device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1907 | |
| 1908 | srq = get_ocrdma_srq(ibsrq); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1909 | |
| 1910 | status = ocrdma_mbx_destroy_srq(dev, srq); |
| 1911 | |
| 1912 | if (srq->pd->uctx) |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1913 | ocrdma_del_mmap(srq->pd->uctx, (u64) srq->rq.pa, |
| 1914 | PAGE_ALIGN(srq->rq.len)); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1915 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1916 | kfree(srq->idx_bit_fields); |
| 1917 | kfree(srq->rqe_wr_id_tbl); |
| 1918 | kfree(srq); |
| 1919 | return status; |
| 1920 | } |
| 1921 | |
| 1922 | /* unprivileged verbs and their support functions. */ |
| 1923 | static void ocrdma_build_ud_hdr(struct ocrdma_qp *qp, |
| 1924 | struct ocrdma_hdr_wqe *hdr, |
| 1925 | struct ib_send_wr *wr) |
| 1926 | { |
| 1927 | struct ocrdma_ewqe_ud_hdr *ud_hdr = |
| 1928 | (struct ocrdma_ewqe_ud_hdr *)(hdr + 1); |
| 1929 | struct ocrdma_ah *ah = get_ocrdma_ah(wr->wr.ud.ah); |
| 1930 | |
| 1931 | ud_hdr->rsvd_dest_qpn = wr->wr.ud.remote_qpn; |
| 1932 | if (qp->qp_type == IB_QPT_GSI) |
| 1933 | ud_hdr->qkey = qp->qkey; |
| 1934 | else |
| 1935 | ud_hdr->qkey = wr->wr.ud.remote_qkey; |
| 1936 | ud_hdr->rsvd_ahid = ah->id; |
Devesh Sharma | 29565f2 | 2014-12-18 14:13:07 +0530 | [diff] [blame] | 1937 | if (ah->av->valid & OCRDMA_AV_VLAN_VALID) |
| 1938 | hdr->cw |= (OCRDMA_FLAG_AH_VLAN_PR << OCRDMA_WQE_FLAGS_SHIFT); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1939 | } |
| 1940 | |
| 1941 | static void ocrdma_build_sges(struct ocrdma_hdr_wqe *hdr, |
| 1942 | struct ocrdma_sge *sge, int num_sge, |
| 1943 | struct ib_sge *sg_list) |
| 1944 | { |
| 1945 | int i; |
| 1946 | |
| 1947 | for (i = 0; i < num_sge; i++) { |
| 1948 | sge[i].lrkey = sg_list[i].lkey; |
| 1949 | sge[i].addr_lo = sg_list[i].addr; |
| 1950 | sge[i].addr_hi = upper_32_bits(sg_list[i].addr); |
| 1951 | sge[i].len = sg_list[i].length; |
| 1952 | hdr->total_len += sg_list[i].length; |
| 1953 | } |
| 1954 | if (num_sge == 0) |
| 1955 | memset(sge, 0, sizeof(*sge)); |
| 1956 | } |
| 1957 | |
Naresh Gottumukkala | 117e6dd | 2013-08-26 15:27:48 +0530 | [diff] [blame] | 1958 | static inline uint32_t ocrdma_sglist_len(struct ib_sge *sg_list, int num_sge) |
| 1959 | { |
| 1960 | uint32_t total_len = 0, i; |
| 1961 | |
| 1962 | for (i = 0; i < num_sge; i++) |
| 1963 | total_len += sg_list[i].length; |
| 1964 | return total_len; |
| 1965 | } |
| 1966 | |
| 1967 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1968 | static int ocrdma_build_inline_sges(struct ocrdma_qp *qp, |
| 1969 | struct ocrdma_hdr_wqe *hdr, |
| 1970 | struct ocrdma_sge *sge, |
| 1971 | struct ib_send_wr *wr, u32 wqe_size) |
| 1972 | { |
Naresh Gottumukkala | 117e6dd | 2013-08-26 15:27:48 +0530 | [diff] [blame] | 1973 | int i; |
| 1974 | char *dpp_addr; |
| 1975 | |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1976 | 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] | 1977 | hdr->total_len = ocrdma_sglist_len(wr->sg_list, wr->num_sge); |
| 1978 | if (unlikely(hdr->total_len > qp->max_inline_data)) { |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 1979 | pr_err("%s() supported_len=0x%x,\n" |
Masanari Iida | 1a84db5 | 2014-08-29 23:37:33 +0900 | [diff] [blame] | 1980 | " unsupported len req=0x%x\n", __func__, |
Naresh Gottumukkala | 117e6dd | 2013-08-26 15:27:48 +0530 | [diff] [blame] | 1981 | qp->max_inline_data, hdr->total_len); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1982 | return -EINVAL; |
| 1983 | } |
Naresh Gottumukkala | 117e6dd | 2013-08-26 15:27:48 +0530 | [diff] [blame] | 1984 | dpp_addr = (char *)sge; |
| 1985 | for (i = 0; i < wr->num_sge; i++) { |
| 1986 | memcpy(dpp_addr, |
| 1987 | (void *)(unsigned long)wr->sg_list[i].addr, |
| 1988 | wr->sg_list[i].length); |
| 1989 | dpp_addr += wr->sg_list[i].length; |
| 1990 | } |
| 1991 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1992 | wqe_size += roundup(hdr->total_len, OCRDMA_WQE_ALIGN_BYTES); |
Naresh Gottumukkala | 117e6dd | 2013-08-26 15:27:48 +0530 | [diff] [blame] | 1993 | if (0 == hdr->total_len) |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 1994 | wqe_size += sizeof(struct ocrdma_sge); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 1995 | hdr->cw |= (OCRDMA_TYPE_INLINE << OCRDMA_WQE_TYPE_SHIFT); |
| 1996 | } else { |
| 1997 | ocrdma_build_sges(hdr, sge, wr->num_sge, wr->sg_list); |
| 1998 | if (wr->num_sge) |
| 1999 | wqe_size += (wr->num_sge * sizeof(struct ocrdma_sge)); |
| 2000 | else |
| 2001 | wqe_size += sizeof(struct ocrdma_sge); |
| 2002 | hdr->cw |= (OCRDMA_TYPE_LKEY << OCRDMA_WQE_TYPE_SHIFT); |
| 2003 | } |
| 2004 | hdr->cw |= ((wqe_size / OCRDMA_WQE_STRIDE) << OCRDMA_WQE_SIZE_SHIFT); |
| 2005 | return 0; |
| 2006 | } |
| 2007 | |
| 2008 | static int ocrdma_build_send(struct ocrdma_qp *qp, struct ocrdma_hdr_wqe *hdr, |
| 2009 | struct ib_send_wr *wr) |
| 2010 | { |
| 2011 | int status; |
| 2012 | struct ocrdma_sge *sge; |
| 2013 | u32 wqe_size = sizeof(*hdr); |
| 2014 | |
| 2015 | if (qp->qp_type == IB_QPT_UD || qp->qp_type == IB_QPT_GSI) { |
| 2016 | ocrdma_build_ud_hdr(qp, hdr, wr); |
| 2017 | sge = (struct ocrdma_sge *)(hdr + 2); |
| 2018 | wqe_size += sizeof(struct ocrdma_ewqe_ud_hdr); |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 2019 | } else { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2020 | sge = (struct ocrdma_sge *)(hdr + 1); |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 2021 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2022 | |
| 2023 | status = ocrdma_build_inline_sges(qp, hdr, sge, wr, wqe_size); |
| 2024 | return status; |
| 2025 | } |
| 2026 | |
| 2027 | static int ocrdma_build_write(struct ocrdma_qp *qp, struct ocrdma_hdr_wqe *hdr, |
| 2028 | struct ib_send_wr *wr) |
| 2029 | { |
| 2030 | int status; |
| 2031 | struct ocrdma_sge *ext_rw = (struct ocrdma_sge *)(hdr + 1); |
| 2032 | struct ocrdma_sge *sge = ext_rw + 1; |
| 2033 | u32 wqe_size = sizeof(*hdr) + sizeof(*ext_rw); |
| 2034 | |
| 2035 | status = ocrdma_build_inline_sges(qp, hdr, sge, wr, wqe_size); |
| 2036 | if (status) |
| 2037 | return status; |
| 2038 | ext_rw->addr_lo = wr->wr.rdma.remote_addr; |
| 2039 | ext_rw->addr_hi = upper_32_bits(wr->wr.rdma.remote_addr); |
| 2040 | ext_rw->lrkey = wr->wr.rdma.rkey; |
| 2041 | ext_rw->len = hdr->total_len; |
| 2042 | return 0; |
| 2043 | } |
| 2044 | |
| 2045 | static void ocrdma_build_read(struct ocrdma_qp *qp, struct ocrdma_hdr_wqe *hdr, |
| 2046 | struct ib_send_wr *wr) |
| 2047 | { |
| 2048 | struct ocrdma_sge *ext_rw = (struct ocrdma_sge *)(hdr + 1); |
| 2049 | struct ocrdma_sge *sge = ext_rw + 1; |
| 2050 | u32 wqe_size = ((wr->num_sge + 1) * sizeof(struct ocrdma_sge)) + |
| 2051 | sizeof(struct ocrdma_hdr_wqe); |
| 2052 | |
| 2053 | ocrdma_build_sges(hdr, sge, wr->num_sge, wr->sg_list); |
| 2054 | hdr->cw |= ((wqe_size / OCRDMA_WQE_STRIDE) << OCRDMA_WQE_SIZE_SHIFT); |
| 2055 | hdr->cw |= (OCRDMA_READ << OCRDMA_WQE_OPCODE_SHIFT); |
| 2056 | hdr->cw |= (OCRDMA_TYPE_LKEY << OCRDMA_WQE_TYPE_SHIFT); |
| 2057 | |
| 2058 | ext_rw->addr_lo = wr->wr.rdma.remote_addr; |
| 2059 | ext_rw->addr_hi = upper_32_bits(wr->wr.rdma.remote_addr); |
| 2060 | ext_rw->lrkey = wr->wr.rdma.rkey; |
| 2061 | ext_rw->len = hdr->total_len; |
| 2062 | } |
| 2063 | |
Naresh Gottumukkala | 7c33880 | 2013-08-26 15:27:39 +0530 | [diff] [blame] | 2064 | static void build_frmr_pbes(struct ib_send_wr *wr, struct ocrdma_pbl *pbl_tbl, |
| 2065 | struct ocrdma_hw_mr *hwmr) |
| 2066 | { |
| 2067 | int i; |
| 2068 | u64 buf_addr = 0; |
| 2069 | int num_pbes; |
| 2070 | struct ocrdma_pbe *pbe; |
| 2071 | |
| 2072 | pbe = (struct ocrdma_pbe *)pbl_tbl->va; |
| 2073 | num_pbes = 0; |
| 2074 | |
| 2075 | /* go through the OS phy regions & fill hw pbe entries into pbls. */ |
| 2076 | for (i = 0; i < wr->wr.fast_reg.page_list_len; i++) { |
| 2077 | /* number of pbes can be more for one OS buf, when |
| 2078 | * buffers are of different sizes. |
| 2079 | * split the ib_buf to one or more pbes. |
| 2080 | */ |
| 2081 | buf_addr = wr->wr.fast_reg.page_list->page_list[i]; |
| 2082 | pbe->pa_lo = cpu_to_le32((u32) (buf_addr & PAGE_MASK)); |
| 2083 | pbe->pa_hi = cpu_to_le32((u32) upper_32_bits(buf_addr)); |
| 2084 | num_pbes += 1; |
| 2085 | pbe++; |
| 2086 | |
| 2087 | /* if the pbl is full storing the pbes, |
| 2088 | * move to next pbl. |
| 2089 | */ |
| 2090 | if (num_pbes == (hwmr->pbl_size/sizeof(u64))) { |
| 2091 | pbl_tbl++; |
| 2092 | pbe = (struct ocrdma_pbe *)pbl_tbl->va; |
| 2093 | } |
| 2094 | } |
| 2095 | return; |
| 2096 | } |
| 2097 | |
| 2098 | static int get_encoded_page_size(int pg_sz) |
| 2099 | { |
| 2100 | /* Max size is 256M 4096 << 16 */ |
| 2101 | int i = 0; |
| 2102 | for (; i < 17; i++) |
| 2103 | if (pg_sz == (4096 << i)) |
| 2104 | break; |
| 2105 | return i; |
| 2106 | } |
| 2107 | |
| 2108 | |
| 2109 | static int ocrdma_build_fr(struct ocrdma_qp *qp, struct ocrdma_hdr_wqe *hdr, |
| 2110 | struct ib_send_wr *wr) |
| 2111 | { |
| 2112 | u64 fbo; |
| 2113 | struct ocrdma_ewqe_fr *fast_reg = (struct ocrdma_ewqe_fr *)(hdr + 1); |
| 2114 | struct ocrdma_mr *mr; |
Mitesh Ahuja | d2b8f7b | 2014-12-18 14:13:06 +0530 | [diff] [blame] | 2115 | struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device); |
Naresh Gottumukkala | 7c33880 | 2013-08-26 15:27:39 +0530 | [diff] [blame] | 2116 | u32 wqe_size = sizeof(*fast_reg) + sizeof(*hdr); |
| 2117 | |
| 2118 | wqe_size = roundup(wqe_size, OCRDMA_WQE_ALIGN_BYTES); |
| 2119 | |
Mitesh Ahuja | d2b8f7b | 2014-12-18 14:13:06 +0530 | [diff] [blame] | 2120 | if (wr->wr.fast_reg.page_list_len > dev->attr.max_pages_per_frmr) |
Naresh Gottumukkala | 7c33880 | 2013-08-26 15:27:39 +0530 | [diff] [blame] | 2121 | return -EINVAL; |
| 2122 | |
| 2123 | hdr->cw |= (OCRDMA_FR_MR << OCRDMA_WQE_OPCODE_SHIFT); |
| 2124 | hdr->cw |= ((wqe_size / OCRDMA_WQE_STRIDE) << OCRDMA_WQE_SIZE_SHIFT); |
| 2125 | |
| 2126 | if (wr->wr.fast_reg.page_list_len == 0) |
| 2127 | BUG(); |
| 2128 | if (wr->wr.fast_reg.access_flags & IB_ACCESS_LOCAL_WRITE) |
| 2129 | hdr->rsvd_lkey_flags |= OCRDMA_LKEY_FLAG_LOCAL_WR; |
| 2130 | if (wr->wr.fast_reg.access_flags & IB_ACCESS_REMOTE_WRITE) |
| 2131 | hdr->rsvd_lkey_flags |= OCRDMA_LKEY_FLAG_REMOTE_WR; |
| 2132 | if (wr->wr.fast_reg.access_flags & IB_ACCESS_REMOTE_READ) |
| 2133 | hdr->rsvd_lkey_flags |= OCRDMA_LKEY_FLAG_REMOTE_RD; |
| 2134 | hdr->lkey = wr->wr.fast_reg.rkey; |
| 2135 | hdr->total_len = wr->wr.fast_reg.length; |
| 2136 | |
| 2137 | fbo = wr->wr.fast_reg.iova_start - |
| 2138 | (wr->wr.fast_reg.page_list->page_list[0] & PAGE_MASK); |
| 2139 | |
| 2140 | fast_reg->va_hi = upper_32_bits(wr->wr.fast_reg.iova_start); |
| 2141 | fast_reg->va_lo = (u32) (wr->wr.fast_reg.iova_start & 0xffffffff); |
| 2142 | fast_reg->fbo_hi = upper_32_bits(fbo); |
| 2143 | fast_reg->fbo_lo = (u32) fbo & 0xffffffff; |
| 2144 | fast_reg->num_sges = wr->wr.fast_reg.page_list_len; |
| 2145 | fast_reg->size_sge = |
| 2146 | get_encoded_page_size(1 << wr->wr.fast_reg.page_shift); |
Roland Dreier | 7a1e89d | 2014-03-17 23:14:17 -0700 | [diff] [blame] | 2147 | mr = (struct ocrdma_mr *) (unsigned long) |
Mitesh Ahuja | d2b8f7b | 2014-12-18 14:13:06 +0530 | [diff] [blame] | 2148 | dev->stag_arr[(hdr->lkey >> 8) & (OCRDMA_MAX_STAG - 1)]; |
Naresh Gottumukkala | 7c33880 | 2013-08-26 15:27:39 +0530 | [diff] [blame] | 2149 | build_frmr_pbes(wr, mr->hwmr.pbl_table, &mr->hwmr); |
| 2150 | return 0; |
| 2151 | } |
| 2152 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2153 | static void ocrdma_ring_sq_db(struct ocrdma_qp *qp) |
| 2154 | { |
Devesh Sharma | 2df84fa8 | 2014-02-04 11:56:55 +0530 | [diff] [blame] | 2155 | u32 val = qp->sq.dbid | (1 << OCRDMA_DB_SQ_SHIFT); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2156 | |
| 2157 | iowrite32(val, qp->sq_db); |
| 2158 | } |
| 2159 | |
| 2160 | int ocrdma_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, |
| 2161 | struct ib_send_wr **bad_wr) |
| 2162 | { |
| 2163 | int status = 0; |
| 2164 | struct ocrdma_qp *qp = get_ocrdma_qp(ibqp); |
| 2165 | struct ocrdma_hdr_wqe *hdr; |
| 2166 | unsigned long flags; |
| 2167 | |
| 2168 | spin_lock_irqsave(&qp->q_lock, flags); |
| 2169 | if (qp->state != OCRDMA_QPS_RTS && qp->state != OCRDMA_QPS_SQD) { |
| 2170 | spin_unlock_irqrestore(&qp->q_lock, flags); |
Naresh Gottumukkala | f6ddcf7 | 2013-06-10 04:42:40 +0000 | [diff] [blame] | 2171 | *bad_wr = wr; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2172 | return -EINVAL; |
| 2173 | } |
| 2174 | |
| 2175 | while (wr) { |
Mitesh Ahuja | f252b5d | 2014-06-10 19:32:20 +0530 | [diff] [blame] | 2176 | if (qp->qp_type == IB_QPT_UD && |
| 2177 | (wr->opcode != IB_WR_SEND && |
| 2178 | wr->opcode != IB_WR_SEND_WITH_IMM)) { |
| 2179 | *bad_wr = wr; |
| 2180 | status = -EINVAL; |
| 2181 | break; |
| 2182 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2183 | if (ocrdma_hwq_free_cnt(&qp->sq) == 0 || |
| 2184 | wr->num_sge > qp->sq.max_sges) { |
Naresh Gottumukkala | f6ddcf7 | 2013-06-10 04:42:40 +0000 | [diff] [blame] | 2185 | *bad_wr = wr; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2186 | status = -ENOMEM; |
| 2187 | break; |
| 2188 | } |
| 2189 | hdr = ocrdma_hwq_head(&qp->sq); |
| 2190 | hdr->cw = 0; |
Naresh Gottumukkala | 2b51a9b | 2013-08-26 15:27:43 +0530 | [diff] [blame] | 2191 | if (wr->send_flags & IB_SEND_SIGNALED || qp->signaled) |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2192 | hdr->cw |= (OCRDMA_FLAG_SIG << OCRDMA_WQE_FLAGS_SHIFT); |
| 2193 | if (wr->send_flags & IB_SEND_FENCE) |
| 2194 | hdr->cw |= |
| 2195 | (OCRDMA_FLAG_FENCE_L << OCRDMA_WQE_FLAGS_SHIFT); |
| 2196 | if (wr->send_flags & IB_SEND_SOLICITED) |
| 2197 | hdr->cw |= |
| 2198 | (OCRDMA_FLAG_SOLICIT << OCRDMA_WQE_FLAGS_SHIFT); |
| 2199 | hdr->total_len = 0; |
| 2200 | switch (wr->opcode) { |
| 2201 | case IB_WR_SEND_WITH_IMM: |
| 2202 | hdr->cw |= (OCRDMA_FLAG_IMM << OCRDMA_WQE_FLAGS_SHIFT); |
| 2203 | hdr->immdt = ntohl(wr->ex.imm_data); |
| 2204 | case IB_WR_SEND: |
| 2205 | hdr->cw |= (OCRDMA_SEND << OCRDMA_WQE_OPCODE_SHIFT); |
| 2206 | ocrdma_build_send(qp, hdr, wr); |
| 2207 | break; |
| 2208 | case IB_WR_SEND_WITH_INV: |
| 2209 | hdr->cw |= (OCRDMA_FLAG_INV << OCRDMA_WQE_FLAGS_SHIFT); |
| 2210 | hdr->cw |= (OCRDMA_SEND << OCRDMA_WQE_OPCODE_SHIFT); |
| 2211 | hdr->lkey = wr->ex.invalidate_rkey; |
| 2212 | status = ocrdma_build_send(qp, hdr, wr); |
| 2213 | break; |
| 2214 | case IB_WR_RDMA_WRITE_WITH_IMM: |
| 2215 | hdr->cw |= (OCRDMA_FLAG_IMM << OCRDMA_WQE_FLAGS_SHIFT); |
| 2216 | hdr->immdt = ntohl(wr->ex.imm_data); |
| 2217 | case IB_WR_RDMA_WRITE: |
| 2218 | hdr->cw |= (OCRDMA_WRITE << OCRDMA_WQE_OPCODE_SHIFT); |
| 2219 | status = ocrdma_build_write(qp, hdr, wr); |
| 2220 | break; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2221 | case IB_WR_RDMA_READ: |
| 2222 | ocrdma_build_read(qp, hdr, wr); |
| 2223 | break; |
| 2224 | case IB_WR_LOCAL_INV: |
| 2225 | hdr->cw |= |
| 2226 | (OCRDMA_LKEY_INV << OCRDMA_WQE_OPCODE_SHIFT); |
Naresh Gottumukkala | 7c33880 | 2013-08-26 15:27:39 +0530 | [diff] [blame] | 2227 | hdr->cw |= ((sizeof(struct ocrdma_hdr_wqe) + |
| 2228 | sizeof(struct ocrdma_sge)) / |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2229 | OCRDMA_WQE_STRIDE) << OCRDMA_WQE_SIZE_SHIFT; |
| 2230 | hdr->lkey = wr->ex.invalidate_rkey; |
| 2231 | break; |
Naresh Gottumukkala | 7c33880 | 2013-08-26 15:27:39 +0530 | [diff] [blame] | 2232 | case IB_WR_FAST_REG_MR: |
| 2233 | status = ocrdma_build_fr(qp, hdr, wr); |
| 2234 | break; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2235 | default: |
| 2236 | status = -EINVAL; |
| 2237 | break; |
| 2238 | } |
| 2239 | if (status) { |
| 2240 | *bad_wr = wr; |
| 2241 | break; |
| 2242 | } |
Naresh Gottumukkala | 2b51a9b | 2013-08-26 15:27:43 +0530 | [diff] [blame] | 2243 | if (wr->send_flags & IB_SEND_SIGNALED || qp->signaled) |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2244 | qp->wqe_wr_id_tbl[qp->sq.head].signaled = 1; |
| 2245 | else |
| 2246 | qp->wqe_wr_id_tbl[qp->sq.head].signaled = 0; |
| 2247 | qp->wqe_wr_id_tbl[qp->sq.head].wrid = wr->wr_id; |
| 2248 | ocrdma_cpu_to_le32(hdr, ((hdr->cw >> OCRDMA_WQE_SIZE_SHIFT) & |
| 2249 | OCRDMA_WQE_SIZE_MASK) * OCRDMA_WQE_STRIDE); |
| 2250 | /* make sure wqe is written before adapter can access it */ |
| 2251 | wmb(); |
| 2252 | /* inform hw to start processing it */ |
| 2253 | ocrdma_ring_sq_db(qp); |
| 2254 | |
| 2255 | /* update pointer, counter for next wr */ |
| 2256 | ocrdma_hwq_inc_head(&qp->sq); |
| 2257 | wr = wr->next; |
| 2258 | } |
| 2259 | spin_unlock_irqrestore(&qp->q_lock, flags); |
| 2260 | return status; |
| 2261 | } |
| 2262 | |
| 2263 | static void ocrdma_ring_rq_db(struct ocrdma_qp *qp) |
| 2264 | { |
Devesh Sharma | 2df84fa8 | 2014-02-04 11:56:55 +0530 | [diff] [blame] | 2265 | u32 val = qp->rq.dbid | (1 << OCRDMA_DB_RQ_SHIFT); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2266 | |
Devesh Sharma | 2df84fa8 | 2014-02-04 11:56:55 +0530 | [diff] [blame] | 2267 | iowrite32(val, qp->rq_db); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2268 | } |
| 2269 | |
| 2270 | static void ocrdma_build_rqe(struct ocrdma_hdr_wqe *rqe, struct ib_recv_wr *wr, |
| 2271 | u16 tag) |
| 2272 | { |
| 2273 | u32 wqe_size = 0; |
| 2274 | struct ocrdma_sge *sge; |
| 2275 | if (wr->num_sge) |
| 2276 | wqe_size = (wr->num_sge * sizeof(*sge)) + sizeof(*rqe); |
| 2277 | else |
| 2278 | wqe_size = sizeof(*sge) + sizeof(*rqe); |
| 2279 | |
| 2280 | rqe->cw = ((wqe_size / OCRDMA_WQE_STRIDE) << |
| 2281 | OCRDMA_WQE_SIZE_SHIFT); |
| 2282 | rqe->cw |= (OCRDMA_FLAG_SIG << OCRDMA_WQE_FLAGS_SHIFT); |
| 2283 | rqe->cw |= (OCRDMA_TYPE_LKEY << OCRDMA_WQE_TYPE_SHIFT); |
| 2284 | rqe->total_len = 0; |
| 2285 | rqe->rsvd_tag = tag; |
| 2286 | sge = (struct ocrdma_sge *)(rqe + 1); |
| 2287 | ocrdma_build_sges(rqe, sge, wr->num_sge, wr->sg_list); |
| 2288 | ocrdma_cpu_to_le32(rqe, wqe_size); |
| 2289 | } |
| 2290 | |
| 2291 | int ocrdma_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr, |
| 2292 | struct ib_recv_wr **bad_wr) |
| 2293 | { |
| 2294 | int status = 0; |
| 2295 | unsigned long flags; |
| 2296 | struct ocrdma_qp *qp = get_ocrdma_qp(ibqp); |
| 2297 | struct ocrdma_hdr_wqe *rqe; |
| 2298 | |
| 2299 | spin_lock_irqsave(&qp->q_lock, flags); |
| 2300 | if (qp->state == OCRDMA_QPS_RST || qp->state == OCRDMA_QPS_ERR) { |
| 2301 | spin_unlock_irqrestore(&qp->q_lock, flags); |
| 2302 | *bad_wr = wr; |
| 2303 | return -EINVAL; |
| 2304 | } |
| 2305 | while (wr) { |
| 2306 | if (ocrdma_hwq_free_cnt(&qp->rq) == 0 || |
| 2307 | wr->num_sge > qp->rq.max_sges) { |
| 2308 | *bad_wr = wr; |
| 2309 | status = -ENOMEM; |
| 2310 | break; |
| 2311 | } |
| 2312 | rqe = ocrdma_hwq_head(&qp->rq); |
| 2313 | ocrdma_build_rqe(rqe, wr, 0); |
| 2314 | |
| 2315 | qp->rqe_wr_id_tbl[qp->rq.head] = wr->wr_id; |
| 2316 | /* make sure rqe is written before adapter can access it */ |
| 2317 | wmb(); |
| 2318 | |
| 2319 | /* inform hw to start processing it */ |
| 2320 | ocrdma_ring_rq_db(qp); |
| 2321 | |
| 2322 | /* update pointer, counter for next wr */ |
| 2323 | ocrdma_hwq_inc_head(&qp->rq); |
| 2324 | wr = wr->next; |
| 2325 | } |
| 2326 | spin_unlock_irqrestore(&qp->q_lock, flags); |
| 2327 | return status; |
| 2328 | } |
| 2329 | |
| 2330 | /* cqe for srq's rqe can potentially arrive out of order. |
| 2331 | * index gives the entry in the shadow table where to store |
| 2332 | * the wr_id. tag/index is returned in cqe to reference back |
| 2333 | * for a given rqe. |
| 2334 | */ |
| 2335 | static int ocrdma_srq_get_idx(struct ocrdma_srq *srq) |
| 2336 | { |
| 2337 | int row = 0; |
| 2338 | int indx = 0; |
| 2339 | |
| 2340 | for (row = 0; row < srq->bit_fields_len; row++) { |
| 2341 | if (srq->idx_bit_fields[row]) { |
| 2342 | indx = ffs(srq->idx_bit_fields[row]); |
| 2343 | indx = (row * 32) + (indx - 1); |
| 2344 | if (indx >= srq->rq.max_cnt) |
| 2345 | BUG(); |
| 2346 | ocrdma_srq_toggle_bit(srq, indx); |
| 2347 | break; |
| 2348 | } |
| 2349 | } |
| 2350 | |
| 2351 | if (row == srq->bit_fields_len) |
| 2352 | BUG(); |
Selvin Xavier | cf5788a | 2014-02-04 11:57:03 +0530 | [diff] [blame] | 2353 | return indx + 1; /* Use from index 1 */ |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2354 | } |
| 2355 | |
| 2356 | static void ocrdma_ring_srq_db(struct ocrdma_srq *srq) |
| 2357 | { |
| 2358 | u32 val = srq->rq.dbid | (1 << 16); |
| 2359 | |
| 2360 | iowrite32(val, srq->db + OCRDMA_DB_GEN2_SRQ_OFFSET); |
| 2361 | } |
| 2362 | |
| 2363 | int ocrdma_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr, |
| 2364 | struct ib_recv_wr **bad_wr) |
| 2365 | { |
| 2366 | int status = 0; |
| 2367 | unsigned long flags; |
| 2368 | struct ocrdma_srq *srq; |
| 2369 | struct ocrdma_hdr_wqe *rqe; |
| 2370 | u16 tag; |
| 2371 | |
| 2372 | srq = get_ocrdma_srq(ibsrq); |
| 2373 | |
| 2374 | spin_lock_irqsave(&srq->q_lock, flags); |
| 2375 | while (wr) { |
| 2376 | if (ocrdma_hwq_free_cnt(&srq->rq) == 0 || |
| 2377 | wr->num_sge > srq->rq.max_sges) { |
| 2378 | status = -ENOMEM; |
| 2379 | *bad_wr = wr; |
| 2380 | break; |
| 2381 | } |
| 2382 | tag = ocrdma_srq_get_idx(srq); |
| 2383 | rqe = ocrdma_hwq_head(&srq->rq); |
| 2384 | ocrdma_build_rqe(rqe, wr, tag); |
| 2385 | |
| 2386 | srq->rqe_wr_id_tbl[tag] = wr->wr_id; |
| 2387 | /* make sure rqe is written before adapter can perform DMA */ |
| 2388 | wmb(); |
| 2389 | /* inform hw to start processing it */ |
| 2390 | ocrdma_ring_srq_db(srq); |
| 2391 | /* update pointer, counter for next wr */ |
| 2392 | ocrdma_hwq_inc_head(&srq->rq); |
| 2393 | wr = wr->next; |
| 2394 | } |
| 2395 | spin_unlock_irqrestore(&srq->q_lock, flags); |
| 2396 | return status; |
| 2397 | } |
| 2398 | |
| 2399 | static enum ib_wc_status ocrdma_to_ibwc_err(u16 status) |
| 2400 | { |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 2401 | enum ib_wc_status ibwc_status; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2402 | |
| 2403 | switch (status) { |
| 2404 | case OCRDMA_CQE_GENERAL_ERR: |
| 2405 | ibwc_status = IB_WC_GENERAL_ERR; |
| 2406 | break; |
| 2407 | case OCRDMA_CQE_LOC_LEN_ERR: |
| 2408 | ibwc_status = IB_WC_LOC_LEN_ERR; |
| 2409 | break; |
| 2410 | case OCRDMA_CQE_LOC_QP_OP_ERR: |
| 2411 | ibwc_status = IB_WC_LOC_QP_OP_ERR; |
| 2412 | break; |
| 2413 | case OCRDMA_CQE_LOC_EEC_OP_ERR: |
| 2414 | ibwc_status = IB_WC_LOC_EEC_OP_ERR; |
| 2415 | break; |
| 2416 | case OCRDMA_CQE_LOC_PROT_ERR: |
| 2417 | ibwc_status = IB_WC_LOC_PROT_ERR; |
| 2418 | break; |
| 2419 | case OCRDMA_CQE_WR_FLUSH_ERR: |
| 2420 | ibwc_status = IB_WC_WR_FLUSH_ERR; |
| 2421 | break; |
| 2422 | case OCRDMA_CQE_MW_BIND_ERR: |
| 2423 | ibwc_status = IB_WC_MW_BIND_ERR; |
| 2424 | break; |
| 2425 | case OCRDMA_CQE_BAD_RESP_ERR: |
| 2426 | ibwc_status = IB_WC_BAD_RESP_ERR; |
| 2427 | break; |
| 2428 | case OCRDMA_CQE_LOC_ACCESS_ERR: |
| 2429 | ibwc_status = IB_WC_LOC_ACCESS_ERR; |
| 2430 | break; |
| 2431 | case OCRDMA_CQE_REM_INV_REQ_ERR: |
| 2432 | ibwc_status = IB_WC_REM_INV_REQ_ERR; |
| 2433 | break; |
| 2434 | case OCRDMA_CQE_REM_ACCESS_ERR: |
| 2435 | ibwc_status = IB_WC_REM_ACCESS_ERR; |
| 2436 | break; |
| 2437 | case OCRDMA_CQE_REM_OP_ERR: |
| 2438 | ibwc_status = IB_WC_REM_OP_ERR; |
| 2439 | break; |
| 2440 | case OCRDMA_CQE_RETRY_EXC_ERR: |
| 2441 | ibwc_status = IB_WC_RETRY_EXC_ERR; |
| 2442 | break; |
| 2443 | case OCRDMA_CQE_RNR_RETRY_EXC_ERR: |
| 2444 | ibwc_status = IB_WC_RNR_RETRY_EXC_ERR; |
| 2445 | break; |
| 2446 | case OCRDMA_CQE_LOC_RDD_VIOL_ERR: |
| 2447 | ibwc_status = IB_WC_LOC_RDD_VIOL_ERR; |
| 2448 | break; |
| 2449 | case OCRDMA_CQE_REM_INV_RD_REQ_ERR: |
| 2450 | ibwc_status = IB_WC_REM_INV_RD_REQ_ERR; |
| 2451 | break; |
| 2452 | case OCRDMA_CQE_REM_ABORT_ERR: |
| 2453 | ibwc_status = IB_WC_REM_ABORT_ERR; |
| 2454 | break; |
| 2455 | case OCRDMA_CQE_INV_EECN_ERR: |
| 2456 | ibwc_status = IB_WC_INV_EECN_ERR; |
| 2457 | break; |
| 2458 | case OCRDMA_CQE_INV_EEC_STATE_ERR: |
| 2459 | ibwc_status = IB_WC_INV_EEC_STATE_ERR; |
| 2460 | break; |
| 2461 | case OCRDMA_CQE_FATAL_ERR: |
| 2462 | ibwc_status = IB_WC_FATAL_ERR; |
| 2463 | break; |
| 2464 | case OCRDMA_CQE_RESP_TIMEOUT_ERR: |
| 2465 | ibwc_status = IB_WC_RESP_TIMEOUT_ERR; |
| 2466 | break; |
| 2467 | default: |
| 2468 | ibwc_status = IB_WC_GENERAL_ERR; |
| 2469 | break; |
Joe Perches | 2b50176d | 2013-10-08 16:07:22 -0700 | [diff] [blame] | 2470 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2471 | return ibwc_status; |
| 2472 | } |
| 2473 | |
| 2474 | static void ocrdma_update_wc(struct ocrdma_qp *qp, struct ib_wc *ibwc, |
| 2475 | u32 wqe_idx) |
| 2476 | { |
| 2477 | struct ocrdma_hdr_wqe *hdr; |
| 2478 | struct ocrdma_sge *rw; |
| 2479 | int opcode; |
| 2480 | |
| 2481 | hdr = ocrdma_hwq_head_from_idx(&qp->sq, wqe_idx); |
| 2482 | |
| 2483 | ibwc->wr_id = qp->wqe_wr_id_tbl[wqe_idx].wrid; |
| 2484 | /* Undo the hdr->cw swap */ |
| 2485 | opcode = le32_to_cpu(hdr->cw) & OCRDMA_WQE_OPCODE_MASK; |
| 2486 | switch (opcode) { |
| 2487 | case OCRDMA_WRITE: |
| 2488 | ibwc->opcode = IB_WC_RDMA_WRITE; |
| 2489 | break; |
| 2490 | case OCRDMA_READ: |
| 2491 | rw = (struct ocrdma_sge *)(hdr + 1); |
| 2492 | ibwc->opcode = IB_WC_RDMA_READ; |
| 2493 | ibwc->byte_len = rw->len; |
| 2494 | break; |
| 2495 | case OCRDMA_SEND: |
| 2496 | ibwc->opcode = IB_WC_SEND; |
| 2497 | break; |
Naresh Gottumukkala | 7c33880 | 2013-08-26 15:27:39 +0530 | [diff] [blame] | 2498 | case OCRDMA_FR_MR: |
| 2499 | ibwc->opcode = IB_WC_FAST_REG_MR; |
| 2500 | break; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2501 | case OCRDMA_LKEY_INV: |
| 2502 | ibwc->opcode = IB_WC_LOCAL_INV; |
| 2503 | break; |
| 2504 | default: |
| 2505 | ibwc->status = IB_WC_GENERAL_ERR; |
Naresh Gottumukkala | ef99c4c | 2013-06-10 04:42:39 +0000 | [diff] [blame] | 2506 | pr_err("%s() invalid opcode received = 0x%x\n", |
| 2507 | __func__, hdr->cw & OCRDMA_WQE_OPCODE_MASK); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2508 | break; |
Joe Perches | 2b50176d | 2013-10-08 16:07:22 -0700 | [diff] [blame] | 2509 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2510 | } |
| 2511 | |
| 2512 | static void ocrdma_set_cqe_status_flushed(struct ocrdma_qp *qp, |
| 2513 | struct ocrdma_cqe *cqe) |
| 2514 | { |
| 2515 | if (is_cqe_for_sq(cqe)) { |
| 2516 | cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu( |
| 2517 | cqe->flags_status_srcqpn) & |
| 2518 | ~OCRDMA_CQE_STATUS_MASK); |
| 2519 | cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu( |
| 2520 | cqe->flags_status_srcqpn) | |
| 2521 | (OCRDMA_CQE_WR_FLUSH_ERR << |
| 2522 | OCRDMA_CQE_STATUS_SHIFT)); |
| 2523 | } else { |
| 2524 | if (qp->qp_type == IB_QPT_UD || qp->qp_type == IB_QPT_GSI) { |
| 2525 | cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu( |
| 2526 | cqe->flags_status_srcqpn) & |
| 2527 | ~OCRDMA_CQE_UD_STATUS_MASK); |
| 2528 | cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu( |
| 2529 | cqe->flags_status_srcqpn) | |
| 2530 | (OCRDMA_CQE_WR_FLUSH_ERR << |
| 2531 | OCRDMA_CQE_UD_STATUS_SHIFT)); |
| 2532 | } else { |
| 2533 | cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu( |
| 2534 | cqe->flags_status_srcqpn) & |
| 2535 | ~OCRDMA_CQE_STATUS_MASK); |
| 2536 | cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu( |
| 2537 | cqe->flags_status_srcqpn) | |
| 2538 | (OCRDMA_CQE_WR_FLUSH_ERR << |
| 2539 | OCRDMA_CQE_STATUS_SHIFT)); |
| 2540 | } |
| 2541 | } |
| 2542 | } |
| 2543 | |
| 2544 | static bool ocrdma_update_err_cqe(struct ib_wc *ibwc, struct ocrdma_cqe *cqe, |
| 2545 | struct ocrdma_qp *qp, int status) |
| 2546 | { |
| 2547 | bool expand = false; |
| 2548 | |
| 2549 | ibwc->byte_len = 0; |
| 2550 | ibwc->qp = &qp->ibqp; |
| 2551 | ibwc->status = ocrdma_to_ibwc_err(status); |
| 2552 | |
| 2553 | ocrdma_flush_qp(qp); |
Naresh Gottumukkala | 057729c | 2013-08-07 12:52:35 +0530 | [diff] [blame] | 2554 | ocrdma_qp_state_change(qp, IB_QPS_ERR, NULL); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2555 | |
| 2556 | /* if wqe/rqe pending for which cqe needs to be returned, |
| 2557 | * trigger inflating it. |
| 2558 | */ |
| 2559 | if (!is_hw_rq_empty(qp) || !is_hw_sq_empty(qp)) { |
| 2560 | expand = true; |
| 2561 | ocrdma_set_cqe_status_flushed(qp, cqe); |
| 2562 | } |
| 2563 | return expand; |
| 2564 | } |
| 2565 | |
| 2566 | static int ocrdma_update_err_rcqe(struct ib_wc *ibwc, struct ocrdma_cqe *cqe, |
| 2567 | struct ocrdma_qp *qp, int status) |
| 2568 | { |
| 2569 | ibwc->opcode = IB_WC_RECV; |
| 2570 | ibwc->wr_id = qp->rqe_wr_id_tbl[qp->rq.tail]; |
| 2571 | ocrdma_hwq_inc_tail(&qp->rq); |
| 2572 | |
| 2573 | return ocrdma_update_err_cqe(ibwc, cqe, qp, status); |
| 2574 | } |
| 2575 | |
| 2576 | static int ocrdma_update_err_scqe(struct ib_wc *ibwc, struct ocrdma_cqe *cqe, |
| 2577 | struct ocrdma_qp *qp, int status) |
| 2578 | { |
| 2579 | ocrdma_update_wc(qp, ibwc, qp->sq.tail); |
| 2580 | ocrdma_hwq_inc_tail(&qp->sq); |
| 2581 | |
| 2582 | return ocrdma_update_err_cqe(ibwc, cqe, qp, status); |
| 2583 | } |
| 2584 | |
| 2585 | |
| 2586 | static bool ocrdma_poll_err_scqe(struct ocrdma_qp *qp, |
| 2587 | struct ocrdma_cqe *cqe, struct ib_wc *ibwc, |
| 2588 | bool *polled, bool *stop) |
| 2589 | { |
| 2590 | bool expand; |
Selvin Xavier | ad56ebb | 2014-12-18 14:12:59 +0530 | [diff] [blame] | 2591 | struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2592 | int status = (le32_to_cpu(cqe->flags_status_srcqpn) & |
| 2593 | OCRDMA_CQE_STATUS_MASK) >> OCRDMA_CQE_STATUS_SHIFT; |
Selvin Xavier | ad56ebb | 2014-12-18 14:12:59 +0530 | [diff] [blame] | 2594 | if (status < OCRDMA_MAX_CQE_ERR) |
| 2595 | atomic_inc(&dev->cqe_err_stats[status]); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2596 | |
| 2597 | /* when hw sq is empty, but rq is not empty, so we continue |
| 2598 | * to keep the cqe in order to get the cq event again. |
| 2599 | */ |
| 2600 | if (is_hw_sq_empty(qp) && !is_hw_rq_empty(qp)) { |
| 2601 | /* when cq for rq and sq is same, it is safe to return |
| 2602 | * flush cqe for RQEs. |
| 2603 | */ |
| 2604 | if (!qp->srq && (qp->sq_cq == qp->rq_cq)) { |
| 2605 | *polled = true; |
| 2606 | status = OCRDMA_CQE_WR_FLUSH_ERR; |
| 2607 | expand = ocrdma_update_err_rcqe(ibwc, cqe, qp, status); |
| 2608 | } else { |
| 2609 | /* stop processing further cqe as this cqe is used for |
| 2610 | * triggering cq event on buddy cq of RQ. |
| 2611 | * When QP is destroyed, this cqe will be removed |
| 2612 | * from the cq's hardware q. |
| 2613 | */ |
| 2614 | *polled = false; |
| 2615 | *stop = true; |
| 2616 | expand = false; |
| 2617 | } |
Selvin Xavier | a96ffb1 | 2014-06-10 19:32:19 +0530 | [diff] [blame] | 2618 | } else if (is_hw_sq_empty(qp)) { |
| 2619 | /* Do nothing */ |
| 2620 | expand = false; |
| 2621 | *polled = false; |
| 2622 | *stop = false; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2623 | } else { |
| 2624 | *polled = true; |
| 2625 | expand = ocrdma_update_err_scqe(ibwc, cqe, qp, status); |
| 2626 | } |
| 2627 | return expand; |
| 2628 | } |
| 2629 | |
| 2630 | static bool ocrdma_poll_success_scqe(struct ocrdma_qp *qp, |
| 2631 | struct ocrdma_cqe *cqe, |
| 2632 | struct ib_wc *ibwc, bool *polled) |
| 2633 | { |
| 2634 | bool expand = false; |
| 2635 | int tail = qp->sq.tail; |
| 2636 | u32 wqe_idx; |
| 2637 | |
| 2638 | if (!qp->wqe_wr_id_tbl[tail].signaled) { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2639 | *polled = false; /* WC cannot be consumed yet */ |
| 2640 | } else { |
| 2641 | ibwc->status = IB_WC_SUCCESS; |
| 2642 | ibwc->wc_flags = 0; |
| 2643 | ibwc->qp = &qp->ibqp; |
| 2644 | ocrdma_update_wc(qp, ibwc, tail); |
| 2645 | *polled = true; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2646 | } |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 2647 | wqe_idx = (le32_to_cpu(cqe->wq.wqeidx) & |
| 2648 | OCRDMA_CQE_WQEIDX_MASK) & qp->sq.max_wqe_idx; |
Parav Pandit | ae3bca9 | 2012-08-17 14:45:33 +0000 | [diff] [blame] | 2649 | if (tail != wqe_idx) |
| 2650 | expand = true; /* Coalesced CQE can't be consumed yet */ |
| 2651 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2652 | ocrdma_hwq_inc_tail(&qp->sq); |
| 2653 | return expand; |
| 2654 | } |
| 2655 | |
| 2656 | static bool ocrdma_poll_scqe(struct ocrdma_qp *qp, struct ocrdma_cqe *cqe, |
| 2657 | struct ib_wc *ibwc, bool *polled, bool *stop) |
| 2658 | { |
| 2659 | int status; |
| 2660 | bool expand; |
| 2661 | |
| 2662 | status = (le32_to_cpu(cqe->flags_status_srcqpn) & |
| 2663 | OCRDMA_CQE_STATUS_MASK) >> OCRDMA_CQE_STATUS_SHIFT; |
| 2664 | |
| 2665 | if (status == OCRDMA_CQE_SUCCESS) |
| 2666 | expand = ocrdma_poll_success_scqe(qp, cqe, ibwc, polled); |
| 2667 | else |
| 2668 | expand = ocrdma_poll_err_scqe(qp, cqe, ibwc, polled, stop); |
| 2669 | return expand; |
| 2670 | } |
| 2671 | |
| 2672 | static int ocrdma_update_ud_rcqe(struct ib_wc *ibwc, struct ocrdma_cqe *cqe) |
| 2673 | { |
| 2674 | int status; |
| 2675 | |
| 2676 | status = (le32_to_cpu(cqe->flags_status_srcqpn) & |
| 2677 | OCRDMA_CQE_UD_STATUS_MASK) >> OCRDMA_CQE_UD_STATUS_SHIFT; |
| 2678 | ibwc->src_qp = le32_to_cpu(cqe->flags_status_srcqpn) & |
| 2679 | OCRDMA_CQE_SRCQP_MASK; |
| 2680 | ibwc->pkey_index = le32_to_cpu(cqe->ud.rxlen_pkey) & |
| 2681 | OCRDMA_CQE_PKEY_MASK; |
| 2682 | ibwc->wc_flags = IB_WC_GRH; |
| 2683 | ibwc->byte_len = (le32_to_cpu(cqe->ud.rxlen_pkey) >> |
| 2684 | OCRDMA_CQE_UD_XFER_LEN_SHIFT); |
| 2685 | return status; |
| 2686 | } |
| 2687 | |
| 2688 | static void ocrdma_update_free_srq_cqe(struct ib_wc *ibwc, |
| 2689 | struct ocrdma_cqe *cqe, |
| 2690 | struct ocrdma_qp *qp) |
| 2691 | { |
| 2692 | unsigned long flags; |
| 2693 | struct ocrdma_srq *srq; |
| 2694 | u32 wqe_idx; |
| 2695 | |
| 2696 | srq = get_ocrdma_srq(qp->ibqp.srq); |
Naresh Gottumukkala | 43a6b40 | 2013-08-26 15:27:38 +0530 | [diff] [blame] | 2697 | wqe_idx = (le32_to_cpu(cqe->rq.buftag_qpn) >> |
Selvin Xavier | cf5788a | 2014-02-04 11:57:03 +0530 | [diff] [blame] | 2698 | OCRDMA_CQE_BUFTAG_SHIFT) & srq->rq.max_wqe_idx; |
| 2699 | if (wqe_idx < 1) |
| 2700 | BUG(); |
| 2701 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2702 | ibwc->wr_id = srq->rqe_wr_id_tbl[wqe_idx]; |
| 2703 | spin_lock_irqsave(&srq->q_lock, flags); |
Selvin Xavier | cf5788a | 2014-02-04 11:57:03 +0530 | [diff] [blame] | 2704 | ocrdma_srq_toggle_bit(srq, wqe_idx - 1); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2705 | spin_unlock_irqrestore(&srq->q_lock, flags); |
| 2706 | ocrdma_hwq_inc_tail(&srq->rq); |
| 2707 | } |
| 2708 | |
| 2709 | static bool ocrdma_poll_err_rcqe(struct ocrdma_qp *qp, struct ocrdma_cqe *cqe, |
| 2710 | struct ib_wc *ibwc, bool *polled, bool *stop, |
| 2711 | int status) |
| 2712 | { |
| 2713 | bool expand; |
Selvin Xavier | ad56ebb | 2014-12-18 14:12:59 +0530 | [diff] [blame] | 2714 | struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device); |
| 2715 | |
| 2716 | if (status < OCRDMA_MAX_CQE_ERR) |
| 2717 | atomic_inc(&dev->cqe_err_stats[status]); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2718 | |
| 2719 | /* when hw_rq is empty, but wq is not empty, so continue |
| 2720 | * to keep the cqe to get the cq event again. |
| 2721 | */ |
| 2722 | if (is_hw_rq_empty(qp) && !is_hw_sq_empty(qp)) { |
| 2723 | if (!qp->srq && (qp->sq_cq == qp->rq_cq)) { |
| 2724 | *polled = true; |
| 2725 | status = OCRDMA_CQE_WR_FLUSH_ERR; |
| 2726 | expand = ocrdma_update_err_scqe(ibwc, cqe, qp, status); |
| 2727 | } else { |
| 2728 | *polled = false; |
| 2729 | *stop = true; |
| 2730 | expand = false; |
| 2731 | } |
Selvin Xavier | a96ffb1 | 2014-06-10 19:32:19 +0530 | [diff] [blame] | 2732 | } else if (is_hw_rq_empty(qp)) { |
| 2733 | /* Do nothing */ |
| 2734 | expand = false; |
| 2735 | *polled = false; |
| 2736 | *stop = false; |
Parav Pandit | a3698a9 | 2012-06-11 16:39:20 +0530 | [diff] [blame] | 2737 | } else { |
| 2738 | *polled = true; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2739 | expand = ocrdma_update_err_rcqe(ibwc, cqe, qp, status); |
Parav Pandit | a3698a9 | 2012-06-11 16:39:20 +0530 | [diff] [blame] | 2740 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2741 | return expand; |
| 2742 | } |
| 2743 | |
| 2744 | static void ocrdma_poll_success_rcqe(struct ocrdma_qp *qp, |
| 2745 | struct ocrdma_cqe *cqe, struct ib_wc *ibwc) |
| 2746 | { |
| 2747 | ibwc->opcode = IB_WC_RECV; |
| 2748 | ibwc->qp = &qp->ibqp; |
| 2749 | ibwc->status = IB_WC_SUCCESS; |
| 2750 | |
| 2751 | if (qp->qp_type == IB_QPT_UD || qp->qp_type == IB_QPT_GSI) |
| 2752 | ocrdma_update_ud_rcqe(ibwc, cqe); |
| 2753 | else |
| 2754 | ibwc->byte_len = le32_to_cpu(cqe->rq.rxlen); |
| 2755 | |
| 2756 | if (is_cqe_imm(cqe)) { |
| 2757 | ibwc->ex.imm_data = htonl(le32_to_cpu(cqe->rq.lkey_immdt)); |
| 2758 | ibwc->wc_flags |= IB_WC_WITH_IMM; |
| 2759 | } else if (is_cqe_wr_imm(cqe)) { |
| 2760 | ibwc->opcode = IB_WC_RECV_RDMA_WITH_IMM; |
| 2761 | ibwc->ex.imm_data = htonl(le32_to_cpu(cqe->rq.lkey_immdt)); |
| 2762 | ibwc->wc_flags |= IB_WC_WITH_IMM; |
| 2763 | } else if (is_cqe_invalidated(cqe)) { |
| 2764 | ibwc->ex.invalidate_rkey = le32_to_cpu(cqe->rq.lkey_immdt); |
| 2765 | ibwc->wc_flags |= IB_WC_WITH_INVALIDATE; |
| 2766 | } |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 2767 | if (qp->ibqp.srq) { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2768 | ocrdma_update_free_srq_cqe(ibwc, cqe, qp); |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 2769 | } else { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2770 | ibwc->wr_id = qp->rqe_wr_id_tbl[qp->rq.tail]; |
| 2771 | ocrdma_hwq_inc_tail(&qp->rq); |
| 2772 | } |
| 2773 | } |
| 2774 | |
| 2775 | static bool ocrdma_poll_rcqe(struct ocrdma_qp *qp, struct ocrdma_cqe *cqe, |
| 2776 | struct ib_wc *ibwc, bool *polled, bool *stop) |
| 2777 | { |
| 2778 | int status; |
| 2779 | bool expand = false; |
| 2780 | |
| 2781 | ibwc->wc_flags = 0; |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 2782 | 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] | 2783 | status = (le32_to_cpu(cqe->flags_status_srcqpn) & |
| 2784 | OCRDMA_CQE_UD_STATUS_MASK) >> |
| 2785 | OCRDMA_CQE_UD_STATUS_SHIFT; |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 2786 | } else { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2787 | status = (le32_to_cpu(cqe->flags_status_srcqpn) & |
| 2788 | OCRDMA_CQE_STATUS_MASK) >> OCRDMA_CQE_STATUS_SHIFT; |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 2789 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2790 | |
| 2791 | if (status == OCRDMA_CQE_SUCCESS) { |
| 2792 | *polled = true; |
| 2793 | ocrdma_poll_success_rcqe(qp, cqe, ibwc); |
| 2794 | } else { |
| 2795 | expand = ocrdma_poll_err_rcqe(qp, cqe, ibwc, polled, stop, |
| 2796 | status); |
| 2797 | } |
| 2798 | return expand; |
| 2799 | } |
| 2800 | |
| 2801 | static void ocrdma_change_cq_phase(struct ocrdma_cq *cq, struct ocrdma_cqe *cqe, |
| 2802 | u16 cur_getp) |
| 2803 | { |
| 2804 | if (cq->phase_change) { |
| 2805 | if (cur_getp == 0) |
| 2806 | cq->phase = (~cq->phase & OCRDMA_CQE_VALID); |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 2807 | } else { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2808 | /* clear valid bit */ |
| 2809 | cqe->flags_status_srcqpn = 0; |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 2810 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2811 | } |
| 2812 | |
| 2813 | static int ocrdma_poll_hwcq(struct ocrdma_cq *cq, int num_entries, |
| 2814 | struct ib_wc *ibwc) |
| 2815 | { |
| 2816 | u16 qpn = 0; |
| 2817 | int i = 0; |
| 2818 | bool expand = false; |
| 2819 | int polled_hw_cqes = 0; |
| 2820 | struct ocrdma_qp *qp = NULL; |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 2821 | struct ocrdma_dev *dev = get_ocrdma_dev(cq->ibcq.device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2822 | struct ocrdma_cqe *cqe; |
| 2823 | u16 cur_getp; bool polled = false; bool stop = false; |
| 2824 | |
| 2825 | cur_getp = cq->getp; |
| 2826 | while (num_entries) { |
| 2827 | cqe = cq->va + cur_getp; |
| 2828 | /* check whether valid cqe or not */ |
| 2829 | if (!is_cqe_valid(cq, cqe)) |
| 2830 | break; |
| 2831 | qpn = (le32_to_cpu(cqe->cmn.qpn) & OCRDMA_CQE_QPN_MASK); |
| 2832 | /* ignore discarded cqe */ |
| 2833 | if (qpn == 0) |
| 2834 | goto skip_cqe; |
| 2835 | qp = dev->qp_tbl[qpn]; |
| 2836 | BUG_ON(qp == NULL); |
| 2837 | |
| 2838 | if (is_cqe_for_sq(cqe)) { |
| 2839 | expand = ocrdma_poll_scqe(qp, cqe, ibwc, &polled, |
| 2840 | &stop); |
| 2841 | } else { |
| 2842 | expand = ocrdma_poll_rcqe(qp, cqe, ibwc, &polled, |
| 2843 | &stop); |
| 2844 | } |
| 2845 | if (expand) |
| 2846 | goto expand_cqe; |
| 2847 | if (stop) |
| 2848 | goto stop_cqe; |
| 2849 | /* clear qpn to avoid duplicate processing by discard_cqe() */ |
| 2850 | cqe->cmn.qpn = 0; |
| 2851 | skip_cqe: |
| 2852 | polled_hw_cqes += 1; |
| 2853 | cur_getp = (cur_getp + 1) % cq->max_hw_cqe; |
| 2854 | ocrdma_change_cq_phase(cq, cqe, cur_getp); |
| 2855 | expand_cqe: |
| 2856 | if (polled) { |
| 2857 | num_entries -= 1; |
| 2858 | i += 1; |
| 2859 | ibwc = ibwc + 1; |
| 2860 | polled = false; |
| 2861 | } |
| 2862 | } |
| 2863 | stop_cqe: |
| 2864 | cq->getp = cur_getp; |
Devesh Sharma | ea617626 | 2014-02-04 11:56:54 +0530 | [diff] [blame] | 2865 | if (cq->deferred_arm) { |
| 2866 | ocrdma_ring_cq_db(dev, cq->id, true, cq->deferred_sol, |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2867 | polled_hw_cqes); |
Devesh Sharma | ea617626 | 2014-02-04 11:56:54 +0530 | [diff] [blame] | 2868 | cq->deferred_arm = false; |
| 2869 | cq->deferred_sol = false; |
| 2870 | } else { |
| 2871 | /* We need to pop the CQE. No need to arm */ |
| 2872 | ocrdma_ring_cq_db(dev, cq->id, false, cq->deferred_sol, |
| 2873 | polled_hw_cqes); |
| 2874 | cq->deferred_sol = false; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2875 | } |
Devesh Sharma | ea617626 | 2014-02-04 11:56:54 +0530 | [diff] [blame] | 2876 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2877 | return i; |
| 2878 | } |
| 2879 | |
| 2880 | /* insert error cqe if the QP's SQ or RQ's CQ matches the CQ under poll. */ |
| 2881 | static int ocrdma_add_err_cqe(struct ocrdma_cq *cq, int num_entries, |
| 2882 | struct ocrdma_qp *qp, struct ib_wc *ibwc) |
| 2883 | { |
| 2884 | int err_cqes = 0; |
| 2885 | |
| 2886 | while (num_entries) { |
| 2887 | if (is_hw_sq_empty(qp) && is_hw_rq_empty(qp)) |
| 2888 | break; |
| 2889 | if (!is_hw_sq_empty(qp) && qp->sq_cq == cq) { |
| 2890 | ocrdma_update_wc(qp, ibwc, qp->sq.tail); |
| 2891 | ocrdma_hwq_inc_tail(&qp->sq); |
| 2892 | } else if (!is_hw_rq_empty(qp) && qp->rq_cq == cq) { |
| 2893 | ibwc->wr_id = qp->rqe_wr_id_tbl[qp->rq.tail]; |
| 2894 | ocrdma_hwq_inc_tail(&qp->rq); |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 2895 | } else { |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2896 | return err_cqes; |
Naresh Gottumukkala | f99b164 | 2013-08-07 12:52:32 +0530 | [diff] [blame] | 2897 | } |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2898 | ibwc->byte_len = 0; |
| 2899 | ibwc->status = IB_WC_WR_FLUSH_ERR; |
| 2900 | ibwc = ibwc + 1; |
| 2901 | err_cqes += 1; |
| 2902 | num_entries -= 1; |
| 2903 | } |
| 2904 | return err_cqes; |
| 2905 | } |
| 2906 | |
| 2907 | int ocrdma_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc) |
| 2908 | { |
| 2909 | int cqes_to_poll = num_entries; |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 2910 | struct ocrdma_cq *cq = get_ocrdma_cq(ibcq); |
| 2911 | struct ocrdma_dev *dev = get_ocrdma_dev(ibcq->device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2912 | int num_os_cqe = 0, err_cqes = 0; |
| 2913 | struct ocrdma_qp *qp; |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 2914 | unsigned long flags; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2915 | |
| 2916 | /* poll cqes from adapter CQ */ |
| 2917 | spin_lock_irqsave(&cq->cq_lock, flags); |
| 2918 | num_os_cqe = ocrdma_poll_hwcq(cq, cqes_to_poll, wc); |
| 2919 | spin_unlock_irqrestore(&cq->cq_lock, flags); |
| 2920 | cqes_to_poll -= num_os_cqe; |
| 2921 | |
| 2922 | if (cqes_to_poll) { |
| 2923 | wc = wc + num_os_cqe; |
| 2924 | /* adapter returns single error cqe when qp moves to |
| 2925 | * error state. So insert error cqes with wc_status as |
| 2926 | * FLUSHED for pending WQEs and RQEs of QP's SQ and RQ |
| 2927 | * respectively which uses this CQ. |
| 2928 | */ |
| 2929 | spin_lock_irqsave(&dev->flush_q_lock, flags); |
| 2930 | list_for_each_entry(qp, &cq->sq_head, sq_entry) { |
| 2931 | if (cqes_to_poll == 0) |
| 2932 | break; |
| 2933 | err_cqes = ocrdma_add_err_cqe(cq, cqes_to_poll, qp, wc); |
| 2934 | cqes_to_poll -= err_cqes; |
| 2935 | num_os_cqe += err_cqes; |
| 2936 | wc = wc + err_cqes; |
| 2937 | } |
| 2938 | spin_unlock_irqrestore(&dev->flush_q_lock, flags); |
| 2939 | } |
| 2940 | return num_os_cqe; |
| 2941 | } |
| 2942 | |
| 2943 | int ocrdma_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags cq_flags) |
| 2944 | { |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 2945 | struct ocrdma_cq *cq = get_ocrdma_cq(ibcq); |
| 2946 | struct ocrdma_dev *dev = get_ocrdma_dev(ibcq->device); |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2947 | u16 cq_id; |
Naresh Gottumukkala | 1afc045 | 2013-08-07 12:52:33 +0530 | [diff] [blame] | 2948 | unsigned long flags; |
Devesh Sharma | ea617626 | 2014-02-04 11:56:54 +0530 | [diff] [blame] | 2949 | bool arm_needed = false, sol_needed = false; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2950 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2951 | cq_id = cq->id; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2952 | |
| 2953 | spin_lock_irqsave(&cq->cq_lock, flags); |
| 2954 | if (cq_flags & IB_CQ_NEXT_COMP || cq_flags & IB_CQ_SOLICITED) |
Devesh Sharma | ea617626 | 2014-02-04 11:56:54 +0530 | [diff] [blame] | 2955 | arm_needed = true; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2956 | if (cq_flags & IB_CQ_SOLICITED) |
Devesh Sharma | ea617626 | 2014-02-04 11:56:54 +0530 | [diff] [blame] | 2957 | sol_needed = true; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2958 | |
Devesh Sharma | ea617626 | 2014-02-04 11:56:54 +0530 | [diff] [blame] | 2959 | if (cq->first_arm) { |
| 2960 | ocrdma_ring_cq_db(dev, cq_id, arm_needed, sol_needed, 0); |
| 2961 | cq->first_arm = false; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2962 | } |
Devesh Sharma | ea617626 | 2014-02-04 11:56:54 +0530 | [diff] [blame] | 2963 | |
Devesh Sharma | f93439e | 2014-06-09 10:52:38 +0530 | [diff] [blame] | 2964 | cq->deferred_arm = true; |
Devesh Sharma | ea617626 | 2014-02-04 11:56:54 +0530 | [diff] [blame] | 2965 | cq->deferred_sol = sol_needed; |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2966 | spin_unlock_irqrestore(&cq->cq_lock, flags); |
Devesh Sharma | ea617626 | 2014-02-04 11:56:54 +0530 | [diff] [blame] | 2967 | |
Parav Pandit | fe2caef | 2012-03-21 04:09:06 +0530 | [diff] [blame] | 2968 | return 0; |
| 2969 | } |
Naresh Gottumukkala | 7c33880 | 2013-08-26 15:27:39 +0530 | [diff] [blame] | 2970 | |
| 2971 | struct ib_mr *ocrdma_alloc_frmr(struct ib_pd *ibpd, int max_page_list_len) |
| 2972 | { |
| 2973 | int status; |
| 2974 | struct ocrdma_mr *mr; |
| 2975 | struct ocrdma_pd *pd = get_ocrdma_pd(ibpd); |
| 2976 | struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device); |
| 2977 | |
| 2978 | if (max_page_list_len > dev->attr.max_pages_per_frmr) |
| 2979 | return ERR_PTR(-EINVAL); |
| 2980 | |
| 2981 | mr = kzalloc(sizeof(*mr), GFP_KERNEL); |
| 2982 | if (!mr) |
| 2983 | return ERR_PTR(-ENOMEM); |
| 2984 | |
| 2985 | status = ocrdma_get_pbl_info(dev, mr, max_page_list_len); |
| 2986 | if (status) |
| 2987 | goto pbl_err; |
| 2988 | mr->hwmr.fr_mr = 1; |
| 2989 | mr->hwmr.remote_rd = 0; |
| 2990 | mr->hwmr.remote_wr = 0; |
| 2991 | mr->hwmr.local_rd = 0; |
| 2992 | mr->hwmr.local_wr = 0; |
| 2993 | mr->hwmr.mw_bind = 0; |
| 2994 | status = ocrdma_build_pbl_tbl(dev, &mr->hwmr); |
| 2995 | if (status) |
| 2996 | goto pbl_err; |
| 2997 | status = ocrdma_reg_mr(dev, &mr->hwmr, pd->id, 0); |
| 2998 | if (status) |
| 2999 | goto mbx_err; |
| 3000 | mr->ibmr.rkey = mr->hwmr.lkey; |
| 3001 | mr->ibmr.lkey = mr->hwmr.lkey; |
Roland Dreier | 7a1e89d | 2014-03-17 23:14:17 -0700 | [diff] [blame] | 3002 | dev->stag_arr[(mr->hwmr.lkey >> 8) & (OCRDMA_MAX_STAG - 1)] = |
| 3003 | (unsigned long) mr; |
Naresh Gottumukkala | 7c33880 | 2013-08-26 15:27:39 +0530 | [diff] [blame] | 3004 | return &mr->ibmr; |
| 3005 | mbx_err: |
| 3006 | ocrdma_free_mr_pbl_tbl(dev, &mr->hwmr); |
| 3007 | pbl_err: |
| 3008 | kfree(mr); |
| 3009 | return ERR_PTR(-ENOMEM); |
| 3010 | } |
| 3011 | |
| 3012 | struct ib_fast_reg_page_list *ocrdma_alloc_frmr_page_list(struct ib_device |
| 3013 | *ibdev, |
| 3014 | int page_list_len) |
| 3015 | { |
| 3016 | struct ib_fast_reg_page_list *frmr_list; |
| 3017 | int size; |
| 3018 | |
| 3019 | size = sizeof(*frmr_list) + (page_list_len * sizeof(u64)); |
| 3020 | frmr_list = kzalloc(size, GFP_KERNEL); |
| 3021 | if (!frmr_list) |
| 3022 | return ERR_PTR(-ENOMEM); |
| 3023 | frmr_list->page_list = (u64 *)(frmr_list + 1); |
| 3024 | return frmr_list; |
| 3025 | } |
| 3026 | |
| 3027 | void ocrdma_free_frmr_page_list(struct ib_fast_reg_page_list *page_list) |
| 3028 | { |
| 3029 | kfree(page_list); |
| 3030 | } |
Naresh Gottumukkala | cffce99 | 2013-08-26 15:27:44 +0530 | [diff] [blame] | 3031 | |
| 3032 | #define MAX_KERNEL_PBE_SIZE 65536 |
| 3033 | static inline int count_kernel_pbes(struct ib_phys_buf *buf_list, |
| 3034 | int buf_cnt, u32 *pbe_size) |
| 3035 | { |
| 3036 | u64 total_size = 0; |
| 3037 | u64 buf_size = 0; |
| 3038 | int i; |
| 3039 | *pbe_size = roundup(buf_list[0].size, PAGE_SIZE); |
| 3040 | *pbe_size = roundup_pow_of_two(*pbe_size); |
| 3041 | |
| 3042 | /* find the smallest PBE size that we can have */ |
| 3043 | for (i = 0; i < buf_cnt; i++) { |
| 3044 | /* first addr may not be page aligned, so ignore checking */ |
| 3045 | if ((i != 0) && ((buf_list[i].addr & ~PAGE_MASK) || |
| 3046 | (buf_list[i].size & ~PAGE_MASK))) { |
| 3047 | return 0; |
| 3048 | } |
| 3049 | |
| 3050 | /* if configured PBE size is greater then the chosen one, |
| 3051 | * reduce the PBE size. |
| 3052 | */ |
| 3053 | buf_size = roundup(buf_list[i].size, PAGE_SIZE); |
| 3054 | /* pbe_size has to be even multiple of 4K 1,2,4,8...*/ |
| 3055 | buf_size = roundup_pow_of_two(buf_size); |
| 3056 | if (*pbe_size > buf_size) |
| 3057 | *pbe_size = buf_size; |
| 3058 | |
| 3059 | total_size += buf_size; |
| 3060 | } |
| 3061 | *pbe_size = *pbe_size > MAX_KERNEL_PBE_SIZE ? |
| 3062 | (MAX_KERNEL_PBE_SIZE) : (*pbe_size); |
| 3063 | |
| 3064 | /* num_pbes = total_size / (*pbe_size); this is implemented below. */ |
| 3065 | |
| 3066 | return total_size >> ilog2(*pbe_size); |
| 3067 | } |
| 3068 | |
| 3069 | static void build_kernel_pbes(struct ib_phys_buf *buf_list, int ib_buf_cnt, |
| 3070 | u32 pbe_size, struct ocrdma_pbl *pbl_tbl, |
| 3071 | struct ocrdma_hw_mr *hwmr) |
| 3072 | { |
| 3073 | int i; |
| 3074 | int idx; |
| 3075 | int pbes_per_buf = 0; |
| 3076 | u64 buf_addr = 0; |
| 3077 | int num_pbes; |
| 3078 | struct ocrdma_pbe *pbe; |
| 3079 | int total_num_pbes = 0; |
| 3080 | |
| 3081 | if (!hwmr->num_pbes) |
| 3082 | return; |
| 3083 | |
| 3084 | pbe = (struct ocrdma_pbe *)pbl_tbl->va; |
| 3085 | num_pbes = 0; |
| 3086 | |
| 3087 | /* go through the OS phy regions & fill hw pbe entries into pbls. */ |
| 3088 | for (i = 0; i < ib_buf_cnt; i++) { |
| 3089 | buf_addr = buf_list[i].addr; |
| 3090 | pbes_per_buf = |
| 3091 | roundup_pow_of_two(roundup(buf_list[i].size, PAGE_SIZE)) / |
| 3092 | pbe_size; |
| 3093 | hwmr->len += buf_list[i].size; |
| 3094 | /* number of pbes can be more for one OS buf, when |
| 3095 | * buffers are of different sizes. |
| 3096 | * split the ib_buf to one or more pbes. |
| 3097 | */ |
| 3098 | for (idx = 0; idx < pbes_per_buf; idx++) { |
| 3099 | /* we program always page aligned addresses, |
| 3100 | * first unaligned address is taken care by fbo. |
| 3101 | */ |
| 3102 | if (i == 0) { |
| 3103 | /* for non zero fbo, assign the |
| 3104 | * start of the page. |
| 3105 | */ |
| 3106 | pbe->pa_lo = |
| 3107 | cpu_to_le32((u32) (buf_addr & PAGE_MASK)); |
| 3108 | pbe->pa_hi = |
| 3109 | cpu_to_le32((u32) upper_32_bits(buf_addr)); |
| 3110 | } else { |
| 3111 | pbe->pa_lo = |
| 3112 | cpu_to_le32((u32) (buf_addr & 0xffffffff)); |
| 3113 | pbe->pa_hi = |
| 3114 | cpu_to_le32((u32) upper_32_bits(buf_addr)); |
| 3115 | } |
| 3116 | buf_addr += pbe_size; |
| 3117 | num_pbes += 1; |
| 3118 | total_num_pbes += 1; |
| 3119 | pbe++; |
| 3120 | |
| 3121 | if (total_num_pbes == hwmr->num_pbes) |
| 3122 | goto mr_tbl_done; |
| 3123 | /* if the pbl is full storing the pbes, |
| 3124 | * move to next pbl. |
| 3125 | */ |
| 3126 | if (num_pbes == (hwmr->pbl_size/sizeof(u64))) { |
| 3127 | pbl_tbl++; |
| 3128 | pbe = (struct ocrdma_pbe *)pbl_tbl->va; |
| 3129 | num_pbes = 0; |
| 3130 | } |
| 3131 | } |
| 3132 | } |
| 3133 | mr_tbl_done: |
| 3134 | return; |
| 3135 | } |
| 3136 | |
| 3137 | struct ib_mr *ocrdma_reg_kernel_mr(struct ib_pd *ibpd, |
| 3138 | struct ib_phys_buf *buf_list, |
| 3139 | int buf_cnt, int acc, u64 *iova_start) |
| 3140 | { |
| 3141 | int status = -ENOMEM; |
| 3142 | struct ocrdma_mr *mr; |
| 3143 | struct ocrdma_pd *pd = get_ocrdma_pd(ibpd); |
| 3144 | struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device); |
| 3145 | u32 num_pbes; |
| 3146 | u32 pbe_size = 0; |
| 3147 | |
| 3148 | if ((acc & IB_ACCESS_REMOTE_WRITE) && !(acc & IB_ACCESS_LOCAL_WRITE)) |
| 3149 | return ERR_PTR(-EINVAL); |
| 3150 | |
| 3151 | mr = kzalloc(sizeof(*mr), GFP_KERNEL); |
| 3152 | if (!mr) |
| 3153 | return ERR_PTR(status); |
| 3154 | |
| 3155 | num_pbes = count_kernel_pbes(buf_list, buf_cnt, &pbe_size); |
| 3156 | if (num_pbes == 0) { |
| 3157 | status = -EINVAL; |
| 3158 | goto pbl_err; |
| 3159 | } |
| 3160 | status = ocrdma_get_pbl_info(dev, mr, num_pbes); |
| 3161 | if (status) |
| 3162 | goto pbl_err; |
| 3163 | |
| 3164 | mr->hwmr.pbe_size = pbe_size; |
| 3165 | mr->hwmr.fbo = *iova_start - (buf_list[0].addr & PAGE_MASK); |
| 3166 | mr->hwmr.va = *iova_start; |
| 3167 | mr->hwmr.local_rd = 1; |
| 3168 | mr->hwmr.remote_wr = (acc & IB_ACCESS_REMOTE_WRITE) ? 1 : 0; |
| 3169 | mr->hwmr.remote_rd = (acc & IB_ACCESS_REMOTE_READ) ? 1 : 0; |
| 3170 | mr->hwmr.local_wr = (acc & IB_ACCESS_LOCAL_WRITE) ? 1 : 0; |
| 3171 | mr->hwmr.remote_atomic = (acc & IB_ACCESS_REMOTE_ATOMIC) ? 1 : 0; |
| 3172 | mr->hwmr.mw_bind = (acc & IB_ACCESS_MW_BIND) ? 1 : 0; |
| 3173 | |
| 3174 | status = ocrdma_build_pbl_tbl(dev, &mr->hwmr); |
| 3175 | if (status) |
| 3176 | goto pbl_err; |
| 3177 | build_kernel_pbes(buf_list, buf_cnt, pbe_size, mr->hwmr.pbl_table, |
| 3178 | &mr->hwmr); |
| 3179 | status = ocrdma_reg_mr(dev, &mr->hwmr, pd->id, acc); |
| 3180 | if (status) |
| 3181 | goto mbx_err; |
| 3182 | |
| 3183 | mr->ibmr.lkey = mr->hwmr.lkey; |
| 3184 | if (mr->hwmr.remote_wr || mr->hwmr.remote_rd) |
| 3185 | mr->ibmr.rkey = mr->hwmr.lkey; |
| 3186 | return &mr->ibmr; |
| 3187 | |
| 3188 | mbx_err: |
| 3189 | ocrdma_free_mr_pbl_tbl(dev, &mr->hwmr); |
| 3190 | pbl_err: |
| 3191 | kfree(mr); |
| 3192 | return ERR_PTR(status); |
| 3193 | } |