| /* |
| * IBM eServer eHCA Infiniband device driver for Linux on POWER |
| * |
| * module start stop, hca detection |
| * |
| * Authors: Heiko J Schick <schickhj@de.ibm.com> |
| * Hoang-Nam Nguyen <hnguyen@de.ibm.com> |
| * Joachim Fenkes <fenkes@de.ibm.com> |
| * |
| * Copyright (c) 2005 IBM Corporation |
| * |
| * All rights reserved. |
| * |
| * This source code is distributed under a dual license of GPL v2.0 and OpenIB |
| * BSD. |
| * |
| * OpenIB BSD License |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * Redistributions of source code must retain the above copyright notice, this |
| * list of conditions and the following disclaimer. |
| * |
| * Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials |
| * provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER |
| * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifdef CONFIG_PPC_64K_PAGES |
| #include <linux/slab.h> |
| #endif |
| |
| #include <linux/notifier.h> |
| #include <linux/memory.h> |
| #include "ehca_classes.h" |
| #include "ehca_iverbs.h" |
| #include "ehca_mrmw.h" |
| #include "ehca_tools.h" |
| #include "hcp_if.h" |
| |
| #define HCAD_VERSION "0029" |
| |
| MODULE_LICENSE("Dual BSD/GPL"); |
| MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>"); |
| MODULE_DESCRIPTION("IBM eServer HCA InfiniBand Device Driver"); |
| MODULE_VERSION(HCAD_VERSION); |
| |
| static int ehca_open_aqp1 = 0; |
| static int ehca_hw_level = 0; |
| static int ehca_poll_all_eqs = 1; |
| |
| int ehca_debug_level = 0; |
| int ehca_nr_ports = -1; |
| int ehca_use_hp_mr = 0; |
| int ehca_port_act_time = 30; |
| int ehca_static_rate = -1; |
| int ehca_scaling_code = 0; |
| int ehca_lock_hcalls = -1; |
| int ehca_max_cq = -1; |
| int ehca_max_qp = -1; |
| |
| module_param_named(open_aqp1, ehca_open_aqp1, bool, S_IRUGO); |
| module_param_named(debug_level, ehca_debug_level, int, S_IRUGO); |
| module_param_named(hw_level, ehca_hw_level, int, S_IRUGO); |
| module_param_named(nr_ports, ehca_nr_ports, int, S_IRUGO); |
| module_param_named(use_hp_mr, ehca_use_hp_mr, bool, S_IRUGO); |
| module_param_named(port_act_time, ehca_port_act_time, int, S_IRUGO); |
| module_param_named(poll_all_eqs, ehca_poll_all_eqs, bool, S_IRUGO); |
| module_param_named(static_rate, ehca_static_rate, int, S_IRUGO); |
| module_param_named(scaling_code, ehca_scaling_code, bool, S_IRUGO); |
| module_param_named(lock_hcalls, ehca_lock_hcalls, bool, S_IRUGO); |
| module_param_named(number_of_cqs, ehca_max_cq, int, S_IRUGO); |
| module_param_named(number_of_qps, ehca_max_qp, int, S_IRUGO); |
| |
| MODULE_PARM_DESC(open_aqp1, |
| "Open AQP1 on startup (default: no)"); |
| MODULE_PARM_DESC(debug_level, |
| "Amount of debug output (0: none (default), 1: traces, " |
| "2: some dumps, 3: lots)"); |
| MODULE_PARM_DESC(hw_level, |
| "Hardware level (0: autosensing (default), " |
| "0x10..0x14: eHCA, 0x20..0x23: eHCA2)"); |
| MODULE_PARM_DESC(nr_ports, |
| "number of connected ports (-1: autodetect (default), " |
| "1: port one only, 2: two ports)"); |
| MODULE_PARM_DESC(use_hp_mr, |
| "Use high performance MRs (default: no)"); |
| MODULE_PARM_DESC(port_act_time, |
| "Time to wait for port activation (default: 30 sec)"); |
| MODULE_PARM_DESC(poll_all_eqs, |
| "Poll all event queues periodically (default: yes)"); |
| MODULE_PARM_DESC(static_rate, |
| "Set permanent static rate (default: no static rate)"); |
| MODULE_PARM_DESC(scaling_code, |
| "Enable scaling code (default: no)"); |
| MODULE_PARM_DESC(lock_hcalls, |
| "Serialize all hCalls made by the driver " |
| "(default: autodetect)"); |
| MODULE_PARM_DESC(number_of_cqs, |
| "Max number of CQs which can be allocated " |
| "(default: autodetect)"); |
| MODULE_PARM_DESC(number_of_qps, |
| "Max number of QPs which can be allocated " |
| "(default: autodetect)"); |
| |
| DEFINE_RWLOCK(ehca_qp_idr_lock); |
| DEFINE_RWLOCK(ehca_cq_idr_lock); |
| DEFINE_IDR(ehca_qp_idr); |
| DEFINE_IDR(ehca_cq_idr); |
| |
| static LIST_HEAD(shca_list); /* list of all registered ehcas */ |
| DEFINE_SPINLOCK(shca_list_lock); |
| |
| static struct timer_list poll_eqs_timer; |
| |
| #ifdef CONFIG_PPC_64K_PAGES |
| static struct kmem_cache *ctblk_cache; |
| |
| void *ehca_alloc_fw_ctrlblock(gfp_t flags) |
| { |
| void *ret = kmem_cache_zalloc(ctblk_cache, flags); |
| if (!ret) |
| ehca_gen_err("Out of memory for ctblk"); |
| return ret; |
| } |
| |
| void ehca_free_fw_ctrlblock(void *ptr) |
| { |
| if (ptr) |
| kmem_cache_free(ctblk_cache, ptr); |
| |
| } |
| #endif |
| |
| int ehca2ib_return_code(u64 ehca_rc) |
| { |
| switch (ehca_rc) { |
| case H_SUCCESS: |
| return 0; |
| case H_RESOURCE: /* Resource in use */ |
| case H_BUSY: |
| return -EBUSY; |
| case H_NOT_ENOUGH_RESOURCES: /* insufficient resources */ |
| case H_CONSTRAINED: /* resource constraint */ |
| case H_NO_MEM: |
| return -ENOMEM; |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| static int ehca_create_slab_caches(void) |
| { |
| int ret; |
| |
| ret = ehca_init_pd_cache(); |
| if (ret) { |
| ehca_gen_err("Cannot create PD SLAB cache."); |
| return ret; |
| } |
| |
| ret = ehca_init_cq_cache(); |
| if (ret) { |
| ehca_gen_err("Cannot create CQ SLAB cache."); |
| goto create_slab_caches2; |
| } |
| |
| ret = ehca_init_qp_cache(); |
| if (ret) { |
| ehca_gen_err("Cannot create QP SLAB cache."); |
| goto create_slab_caches3; |
| } |
| |
| ret = ehca_init_av_cache(); |
| if (ret) { |
| ehca_gen_err("Cannot create AV SLAB cache."); |
| goto create_slab_caches4; |
| } |
| |
| ret = ehca_init_mrmw_cache(); |
| if (ret) { |
| ehca_gen_err("Cannot create MR&MW SLAB cache."); |
| goto create_slab_caches5; |
| } |
| |
| ret = ehca_init_small_qp_cache(); |
| if (ret) { |
| ehca_gen_err("Cannot create small queue SLAB cache."); |
| goto create_slab_caches6; |
| } |
| |
| #ifdef CONFIG_PPC_64K_PAGES |
| ctblk_cache = kmem_cache_create("ehca_cache_ctblk", |
| EHCA_PAGESIZE, H_CB_ALIGNMENT, |
| SLAB_HWCACHE_ALIGN, |
| NULL); |
| if (!ctblk_cache) { |
| ehca_gen_err("Cannot create ctblk SLAB cache."); |
| ehca_cleanup_small_qp_cache(); |
| goto create_slab_caches6; |
| } |
| #endif |
| return 0; |
| |
| create_slab_caches6: |
| ehca_cleanup_mrmw_cache(); |
| |
| create_slab_caches5: |
| ehca_cleanup_av_cache(); |
| |
| create_slab_caches4: |
| ehca_cleanup_qp_cache(); |
| |
| create_slab_caches3: |
| ehca_cleanup_cq_cache(); |
| |
| create_slab_caches2: |
| ehca_cleanup_pd_cache(); |
| |
| return ret; |
| } |
| |
| static void ehca_destroy_slab_caches(void) |
| { |
| ehca_cleanup_small_qp_cache(); |
| ehca_cleanup_mrmw_cache(); |
| ehca_cleanup_av_cache(); |
| ehca_cleanup_qp_cache(); |
| ehca_cleanup_cq_cache(); |
| ehca_cleanup_pd_cache(); |
| #ifdef CONFIG_PPC_64K_PAGES |
| if (ctblk_cache) |
| kmem_cache_destroy(ctblk_cache); |
| #endif |
| } |
| |
| #define EHCA_HCAAVER EHCA_BMASK_IBM(32, 39) |
| #define EHCA_REVID EHCA_BMASK_IBM(40, 63) |
| |
| static struct cap_descr { |
| u64 mask; |
| char *descr; |
| } hca_cap_descr[] = { |
| { HCA_CAP_AH_PORT_NR_CHECK, "HCA_CAP_AH_PORT_NR_CHECK" }, |
| { HCA_CAP_ATOMIC, "HCA_CAP_ATOMIC" }, |
| { HCA_CAP_AUTO_PATH_MIG, "HCA_CAP_AUTO_PATH_MIG" }, |
| { HCA_CAP_BAD_P_KEY_CTR, "HCA_CAP_BAD_P_KEY_CTR" }, |
| { HCA_CAP_SQD_RTS_PORT_CHANGE, "HCA_CAP_SQD_RTS_PORT_CHANGE" }, |
| { HCA_CAP_CUR_QP_STATE_MOD, "HCA_CAP_CUR_QP_STATE_MOD" }, |
| { HCA_CAP_INIT_TYPE, "HCA_CAP_INIT_TYPE" }, |
| { HCA_CAP_PORT_ACTIVE_EVENT, "HCA_CAP_PORT_ACTIVE_EVENT" }, |
| { HCA_CAP_Q_KEY_VIOL_CTR, "HCA_CAP_Q_KEY_VIOL_CTR" }, |
| { HCA_CAP_WQE_RESIZE, "HCA_CAP_WQE_RESIZE" }, |
| { HCA_CAP_RAW_PACKET_MCAST, "HCA_CAP_RAW_PACKET_MCAST" }, |
| { HCA_CAP_SHUTDOWN_PORT, "HCA_CAP_SHUTDOWN_PORT" }, |
| { HCA_CAP_RC_LL_QP, "HCA_CAP_RC_LL_QP" }, |
| { HCA_CAP_SRQ, "HCA_CAP_SRQ" }, |
| { HCA_CAP_UD_LL_QP, "HCA_CAP_UD_LL_QP" }, |
| { HCA_CAP_RESIZE_MR, "HCA_CAP_RESIZE_MR" }, |
| { HCA_CAP_MINI_QP, "HCA_CAP_MINI_QP" }, |
| { HCA_CAP_H_ALLOC_RES_SYNC, "HCA_CAP_H_ALLOC_RES_SYNC" }, |
| }; |
| |
| static int ehca_sense_attributes(struct ehca_shca *shca) |
| { |
| int i, ret = 0; |
| u64 h_ret; |
| struct hipz_query_hca *rblock; |
| struct hipz_query_port *port; |
| const char *loc_code; |
| |
| static const u32 pgsize_map[] = { |
| HCA_CAP_MR_PGSIZE_4K, 0x1000, |
| HCA_CAP_MR_PGSIZE_64K, 0x10000, |
| HCA_CAP_MR_PGSIZE_1M, 0x100000, |
| HCA_CAP_MR_PGSIZE_16M, 0x1000000, |
| }; |
| |
| ehca_gen_dbg("Probing adapter %s...", |
| shca->ofdev->node->full_name); |
| loc_code = of_get_property(shca->ofdev->node, "ibm,loc-code", NULL); |
| if (loc_code) |
| ehca_gen_dbg(" ... location lode=%s", loc_code); |
| |
| rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); |
| if (!rblock) { |
| ehca_gen_err("Cannot allocate rblock memory."); |
| return -ENOMEM; |
| } |
| |
| h_ret = hipz_h_query_hca(shca->ipz_hca_handle, rblock); |
| if (h_ret != H_SUCCESS) { |
| ehca_gen_err("Cannot query device properties. h_ret=%lli", |
| h_ret); |
| ret = -EPERM; |
| goto sense_attributes1; |
| } |
| |
| if (ehca_nr_ports == 1) |
| shca->num_ports = 1; |
| else |
| shca->num_ports = (u8)rblock->num_ports; |
| |
| ehca_gen_dbg(" ... found %x ports", rblock->num_ports); |
| |
| if (ehca_hw_level == 0) { |
| u32 hcaaver; |
| u32 revid; |
| |
| hcaaver = EHCA_BMASK_GET(EHCA_HCAAVER, rblock->hw_ver); |
| revid = EHCA_BMASK_GET(EHCA_REVID, rblock->hw_ver); |
| |
| ehca_gen_dbg(" ... hardware version=%x:%x", hcaaver, revid); |
| |
| if (hcaaver == 1) { |
| if (revid <= 3) |
| shca->hw_level = 0x10 | (revid + 1); |
| else |
| shca->hw_level = 0x14; |
| } else if (hcaaver == 2) { |
| if (revid == 0) |
| shca->hw_level = 0x21; |
| else if (revid == 0x10) |
| shca->hw_level = 0x22; |
| else if (revid == 0x20 || revid == 0x21) |
| shca->hw_level = 0x23; |
| } |
| |
| if (!shca->hw_level) { |
| ehca_gen_warn("unknown hardware version" |
| " - assuming default level"); |
| shca->hw_level = 0x22; |
| } |
| } else |
| shca->hw_level = ehca_hw_level; |
| ehca_gen_dbg(" ... hardware level=%x", shca->hw_level); |
| |
| shca->hca_cap = rblock->hca_cap_indicators; |
| ehca_gen_dbg(" ... HCA capabilities:"); |
| for (i = 0; i < ARRAY_SIZE(hca_cap_descr); i++) |
| if (EHCA_BMASK_GET(hca_cap_descr[i].mask, shca->hca_cap)) |
| ehca_gen_dbg(" %s", hca_cap_descr[i].descr); |
| |
| /* Autodetect hCall locking -- the "H_ALLOC_RESOURCE synced" flag is |
| * a firmware property, so it's valid across all adapters |
| */ |
| if (ehca_lock_hcalls == -1) |
| ehca_lock_hcalls = !(shca->hca_cap & HCA_CAP_H_ALLOC_RES_SYNC); |
| |
| /* translate supported MR page sizes; always support 4K */ |
| shca->hca_cap_mr_pgsize = EHCA_PAGESIZE; |
| for (i = 0; i < ARRAY_SIZE(pgsize_map); i += 2) |
| if (rblock->memory_page_size_supported & pgsize_map[i]) |
| shca->hca_cap_mr_pgsize |= pgsize_map[i + 1]; |
| |
| /* Set maximum number of CQs and QPs to calculate EQ size */ |
| if (shca->max_num_qps == -1) |
| shca->max_num_qps = min_t(int, rblock->max_qp, |
| EHCA_MAX_NUM_QUEUES); |
| else if (shca->max_num_qps < 1 || shca->max_num_qps > rblock->max_qp) { |
| ehca_gen_warn("The requested number of QPs is out of range " |
| "(1 - %i) specified by HW. Value is set to %i", |
| rblock->max_qp, rblock->max_qp); |
| shca->max_num_qps = rblock->max_qp; |
| } |
| |
| if (shca->max_num_cqs == -1) |
| shca->max_num_cqs = min_t(int, rblock->max_cq, |
| EHCA_MAX_NUM_QUEUES); |
| else if (shca->max_num_cqs < 1 || shca->max_num_cqs > rblock->max_cq) { |
| ehca_gen_warn("The requested number of CQs is out of range " |
| "(1 - %i) specified by HW. Value is set to %i", |
| rblock->max_cq, rblock->max_cq); |
| } |
| |
| /* query max MTU from first port -- it's the same for all ports */ |
| port = (struct hipz_query_port *)rblock; |
| h_ret = hipz_h_query_port(shca->ipz_hca_handle, 1, port); |
| if (h_ret != H_SUCCESS) { |
| ehca_gen_err("Cannot query port properties. h_ret=%lli", |
| h_ret); |
| ret = -EPERM; |
| goto sense_attributes1; |
| } |
| |
| shca->max_mtu = port->max_mtu; |
| |
| sense_attributes1: |
| ehca_free_fw_ctrlblock(rblock); |
| return ret; |
| } |
| |
| static int init_node_guid(struct ehca_shca *shca) |
| { |
| int ret = 0; |
| struct hipz_query_hca *rblock; |
| |
| rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); |
| if (!rblock) { |
| ehca_err(&shca->ib_device, "Can't allocate rblock memory."); |
| return -ENOMEM; |
| } |
| |
| if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { |
| ehca_err(&shca->ib_device, "Can't query device properties"); |
| ret = -EINVAL; |
| goto init_node_guid1; |
| } |
| |
| memcpy(&shca->ib_device.node_guid, &rblock->node_guid, sizeof(u64)); |
| |
| init_node_guid1: |
| ehca_free_fw_ctrlblock(rblock); |
| return ret; |
| } |
| |
| static int ehca_init_device(struct ehca_shca *shca) |
| { |
| int ret; |
| |
| ret = init_node_guid(shca); |
| if (ret) |
| return ret; |
| |
| strlcpy(shca->ib_device.name, "ehca%d", IB_DEVICE_NAME_MAX); |
| shca->ib_device.owner = THIS_MODULE; |
| |
| shca->ib_device.uverbs_abi_ver = 8; |
| shca->ib_device.uverbs_cmd_mask = |
| (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | |
| (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | |
| (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | |
| (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | |
| (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | |
| (1ull << IB_USER_VERBS_CMD_REG_MR) | |
| (1ull << IB_USER_VERBS_CMD_DEREG_MR) | |
| (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | |
| (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | |
| (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | |
| (1ull << IB_USER_VERBS_CMD_CREATE_QP) | |
| (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | |
| (1ull << IB_USER_VERBS_CMD_QUERY_QP) | |
| (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | |
| (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | |
| (1ull << IB_USER_VERBS_CMD_DETACH_MCAST); |
| |
| shca->ib_device.node_type = RDMA_NODE_IB_CA; |
| shca->ib_device.phys_port_cnt = shca->num_ports; |
| shca->ib_device.num_comp_vectors = 1; |
| shca->ib_device.dma_device = &shca->ofdev->dev; |
| shca->ib_device.query_device = ehca_query_device; |
| shca->ib_device.query_port = ehca_query_port; |
| shca->ib_device.query_gid = ehca_query_gid; |
| shca->ib_device.query_pkey = ehca_query_pkey; |
| /* shca->in_device.modify_device = ehca_modify_device */ |
| shca->ib_device.modify_port = ehca_modify_port; |
| shca->ib_device.alloc_ucontext = ehca_alloc_ucontext; |
| shca->ib_device.dealloc_ucontext = ehca_dealloc_ucontext; |
| shca->ib_device.alloc_pd = ehca_alloc_pd; |
| shca->ib_device.dealloc_pd = ehca_dealloc_pd; |
| shca->ib_device.create_ah = ehca_create_ah; |
| /* shca->ib_device.modify_ah = ehca_modify_ah; */ |
| shca->ib_device.query_ah = ehca_query_ah; |
| shca->ib_device.destroy_ah = ehca_destroy_ah; |
| shca->ib_device.create_qp = ehca_create_qp; |
| shca->ib_device.modify_qp = ehca_modify_qp; |
| shca->ib_device.query_qp = ehca_query_qp; |
| shca->ib_device.destroy_qp = ehca_destroy_qp; |
| shca->ib_device.post_send = ehca_post_send; |
| shca->ib_device.post_recv = ehca_post_recv; |
| shca->ib_device.create_cq = ehca_create_cq; |
| shca->ib_device.destroy_cq = ehca_destroy_cq; |
| shca->ib_device.resize_cq = ehca_resize_cq; |
| shca->ib_device.poll_cq = ehca_poll_cq; |
| /* shca->ib_device.peek_cq = ehca_peek_cq; */ |
| shca->ib_device.req_notify_cq = ehca_req_notify_cq; |
| /* shca->ib_device.req_ncomp_notif = ehca_req_ncomp_notif; */ |
| shca->ib_device.get_dma_mr = ehca_get_dma_mr; |
| shca->ib_device.reg_phys_mr = ehca_reg_phys_mr; |
| shca->ib_device.reg_user_mr = ehca_reg_user_mr; |
| shca->ib_device.query_mr = ehca_query_mr; |
| shca->ib_device.dereg_mr = ehca_dereg_mr; |
| shca->ib_device.rereg_phys_mr = ehca_rereg_phys_mr; |
| shca->ib_device.alloc_mw = ehca_alloc_mw; |
| shca->ib_device.bind_mw = ehca_bind_mw; |
| shca->ib_device.dealloc_mw = ehca_dealloc_mw; |
| shca->ib_device.alloc_fmr = ehca_alloc_fmr; |
| shca->ib_device.map_phys_fmr = ehca_map_phys_fmr; |
| shca->ib_device.unmap_fmr = ehca_unmap_fmr; |
| shca->ib_device.dealloc_fmr = ehca_dealloc_fmr; |
| shca->ib_device.attach_mcast = ehca_attach_mcast; |
| shca->ib_device.detach_mcast = ehca_detach_mcast; |
| shca->ib_device.process_mad = ehca_process_mad; |
| shca->ib_device.mmap = ehca_mmap; |
| shca->ib_device.dma_ops = &ehca_dma_mapping_ops; |
| |
| if (EHCA_BMASK_GET(HCA_CAP_SRQ, shca->hca_cap)) { |
| shca->ib_device.uverbs_cmd_mask |= |
| (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | |
| (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | |
| (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | |
| (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ); |
| |
| shca->ib_device.create_srq = ehca_create_srq; |
| shca->ib_device.modify_srq = ehca_modify_srq; |
| shca->ib_device.query_srq = ehca_query_srq; |
| shca->ib_device.destroy_srq = ehca_destroy_srq; |
| shca->ib_device.post_srq_recv = ehca_post_srq_recv; |
| } |
| |
| return ret; |
| } |
| |
| static int ehca_create_aqp1(struct ehca_shca *shca, u32 port) |
| { |
| struct ehca_sport *sport = &shca->sport[port - 1]; |
| struct ib_cq *ibcq; |
| struct ib_qp *ibqp; |
| struct ib_qp_init_attr qp_init_attr; |
| int ret; |
| |
| if (sport->ibcq_aqp1) { |
| ehca_err(&shca->ib_device, "AQP1 CQ is already created."); |
| return -EPERM; |
| } |
| |
| ibcq = ib_create_cq(&shca->ib_device, NULL, NULL, (void *)(-1), 10, 0); |
| if (IS_ERR(ibcq)) { |
| ehca_err(&shca->ib_device, "Cannot create AQP1 CQ."); |
| return PTR_ERR(ibcq); |
| } |
| sport->ibcq_aqp1 = ibcq; |
| |
| if (sport->ibqp_sqp[IB_QPT_GSI]) { |
| ehca_err(&shca->ib_device, "AQP1 QP is already created."); |
| ret = -EPERM; |
| goto create_aqp1; |
| } |
| |
| memset(&qp_init_attr, 0, sizeof(struct ib_qp_init_attr)); |
| qp_init_attr.send_cq = ibcq; |
| qp_init_attr.recv_cq = ibcq; |
| qp_init_attr.sq_sig_type = IB_SIGNAL_ALL_WR; |
| qp_init_attr.cap.max_send_wr = 100; |
| qp_init_attr.cap.max_recv_wr = 100; |
| qp_init_attr.cap.max_send_sge = 2; |
| qp_init_attr.cap.max_recv_sge = 1; |
| qp_init_attr.qp_type = IB_QPT_GSI; |
| qp_init_attr.port_num = port; |
| qp_init_attr.qp_context = NULL; |
| qp_init_attr.event_handler = NULL; |
| qp_init_attr.srq = NULL; |
| |
| ibqp = ib_create_qp(&shca->pd->ib_pd, &qp_init_attr); |
| if (IS_ERR(ibqp)) { |
| ehca_err(&shca->ib_device, "Cannot create AQP1 QP."); |
| ret = PTR_ERR(ibqp); |
| goto create_aqp1; |
| } |
| sport->ibqp_sqp[IB_QPT_GSI] = ibqp; |
| |
| return 0; |
| |
| create_aqp1: |
| ib_destroy_cq(sport->ibcq_aqp1); |
| return ret; |
| } |
| |
| static int ehca_destroy_aqp1(struct ehca_sport *sport) |
| { |
| int ret; |
| |
| ret = ib_destroy_qp(sport->ibqp_sqp[IB_QPT_GSI]); |
| if (ret) { |
| ehca_gen_err("Cannot destroy AQP1 QP. ret=%i", ret); |
| return ret; |
| } |
| |
| ret = ib_destroy_cq(sport->ibcq_aqp1); |
| if (ret) |
| ehca_gen_err("Cannot destroy AQP1 CQ. ret=%i", ret); |
| |
| return ret; |
| } |
| |
| static ssize_t ehca_show_debug_level(struct device_driver *ddp, char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%d\n", ehca_debug_level); |
| } |
| |
| static ssize_t ehca_store_debug_level(struct device_driver *ddp, |
| const char *buf, size_t count) |
| { |
| int value = (*buf) - '0'; |
| if (value >= 0 && value <= 9) |
| ehca_debug_level = value; |
| return 1; |
| } |
| |
| static DRIVER_ATTR(debug_level, S_IRUSR | S_IWUSR, |
| ehca_show_debug_level, ehca_store_debug_level); |
| |
| static struct attribute *ehca_drv_attrs[] = { |
| &driver_attr_debug_level.attr, |
| NULL |
| }; |
| |
| static struct attribute_group ehca_drv_attr_grp = { |
| .attrs = ehca_drv_attrs |
| }; |
| |
| static const struct attribute_group *ehca_drv_attr_groups[] = { |
| &ehca_drv_attr_grp, |
| NULL, |
| }; |
| |
| #define EHCA_RESOURCE_ATTR(name) \ |
| static ssize_t ehca_show_##name(struct device *dev, \ |
| struct device_attribute *attr, \ |
| char *buf) \ |
| { \ |
| struct ehca_shca *shca; \ |
| struct hipz_query_hca *rblock; \ |
| int data; \ |
| \ |
| shca = dev_get_drvdata(dev); \ |
| \ |
| rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); \ |
| if (!rblock) { \ |
| dev_err(dev, "Can't allocate rblock memory.\n"); \ |
| return 0; \ |
| } \ |
| \ |
| if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \ |
| dev_err(dev, "Can't query device properties\n"); \ |
| ehca_free_fw_ctrlblock(rblock); \ |
| return 0; \ |
| } \ |
| \ |
| data = rblock->name; \ |
| ehca_free_fw_ctrlblock(rblock); \ |
| \ |
| if ((strcmp(#name, "num_ports") == 0) && (ehca_nr_ports == 1)) \ |
| return snprintf(buf, 256, "1\n"); \ |
| else \ |
| return snprintf(buf, 256, "%d\n", data); \ |
| \ |
| } \ |
| static DEVICE_ATTR(name, S_IRUGO, ehca_show_##name, NULL); |
| |
| EHCA_RESOURCE_ATTR(num_ports); |
| EHCA_RESOURCE_ATTR(hw_ver); |
| EHCA_RESOURCE_ATTR(max_eq); |
| EHCA_RESOURCE_ATTR(cur_eq); |
| EHCA_RESOURCE_ATTR(max_cq); |
| EHCA_RESOURCE_ATTR(cur_cq); |
| EHCA_RESOURCE_ATTR(max_qp); |
| EHCA_RESOURCE_ATTR(cur_qp); |
| EHCA_RESOURCE_ATTR(max_mr); |
| EHCA_RESOURCE_ATTR(cur_mr); |
| EHCA_RESOURCE_ATTR(max_mw); |
| EHCA_RESOURCE_ATTR(cur_mw); |
| EHCA_RESOURCE_ATTR(max_pd); |
| EHCA_RESOURCE_ATTR(max_ah); |
| |
| static ssize_t ehca_show_adapter_handle(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct ehca_shca *shca = dev_get_drvdata(dev); |
| |
| return sprintf(buf, "%llx\n", shca->ipz_hca_handle.handle); |
| |
| } |
| static DEVICE_ATTR(adapter_handle, S_IRUGO, ehca_show_adapter_handle, NULL); |
| |
| static struct attribute *ehca_dev_attrs[] = { |
| &dev_attr_adapter_handle.attr, |
| &dev_attr_num_ports.attr, |
| &dev_attr_hw_ver.attr, |
| &dev_attr_max_eq.attr, |
| &dev_attr_cur_eq.attr, |
| &dev_attr_max_cq.attr, |
| &dev_attr_cur_cq.attr, |
| &dev_attr_max_qp.attr, |
| &dev_attr_cur_qp.attr, |
| &dev_attr_max_mr.attr, |
| &dev_attr_cur_mr.attr, |
| &dev_attr_max_mw.attr, |
| &dev_attr_cur_mw.attr, |
| &dev_attr_max_pd.attr, |
| &dev_attr_max_ah.attr, |
| NULL |
| }; |
| |
| static struct attribute_group ehca_dev_attr_grp = { |
| .attrs = ehca_dev_attrs |
| }; |
| |
| static int __devinit ehca_probe(struct of_device *dev, |
| const struct of_device_id *id) |
| { |
| struct ehca_shca *shca; |
| const u64 *handle; |
| struct ib_pd *ibpd; |
| int ret, i, eq_size; |
| unsigned long flags; |
| |
| handle = of_get_property(dev->node, "ibm,hca-handle", NULL); |
| if (!handle) { |
| ehca_gen_err("Cannot get eHCA handle for adapter: %s.", |
| dev->node->full_name); |
| return -ENODEV; |
| } |
| |
| if (!(*handle)) { |
| ehca_gen_err("Wrong eHCA handle for adapter: %s.", |
| dev->node->full_name); |
| return -ENODEV; |
| } |
| |
| shca = (struct ehca_shca *)ib_alloc_device(sizeof(*shca)); |
| if (!shca) { |
| ehca_gen_err("Cannot allocate shca memory."); |
| return -ENOMEM; |
| } |
| |
| mutex_init(&shca->modify_mutex); |
| atomic_set(&shca->num_cqs, 0); |
| atomic_set(&shca->num_qps, 0); |
| shca->max_num_qps = ehca_max_qp; |
| shca->max_num_cqs = ehca_max_cq; |
| |
| for (i = 0; i < ARRAY_SIZE(shca->sport); i++) |
| spin_lock_init(&shca->sport[i].mod_sqp_lock); |
| |
| shca->ofdev = dev; |
| shca->ipz_hca_handle.handle = *handle; |
| dev_set_drvdata(&dev->dev, shca); |
| |
| ret = ehca_sense_attributes(shca); |
| if (ret < 0) { |
| ehca_gen_err("Cannot sense eHCA attributes."); |
| goto probe1; |
| } |
| |
| ret = ehca_init_device(shca); |
| if (ret) { |
| ehca_gen_err("Cannot init ehca device struct"); |
| goto probe1; |
| } |
| |
| eq_size = 2 * shca->max_num_cqs + 4 * shca->max_num_qps; |
| /* create event queues */ |
| ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, eq_size); |
| if (ret) { |
| ehca_err(&shca->ib_device, "Cannot create EQ."); |
| goto probe1; |
| } |
| |
| ret = ehca_create_eq(shca, &shca->neq, EHCA_NEQ, 513); |
| if (ret) { |
| ehca_err(&shca->ib_device, "Cannot create NEQ."); |
| goto probe3; |
| } |
| |
| /* create internal protection domain */ |
| ibpd = ehca_alloc_pd(&shca->ib_device, (void *)(-1), NULL); |
| if (IS_ERR(ibpd)) { |
| ehca_err(&shca->ib_device, "Cannot create internal PD."); |
| ret = PTR_ERR(ibpd); |
| goto probe4; |
| } |
| |
| shca->pd = container_of(ibpd, struct ehca_pd, ib_pd); |
| shca->pd->ib_pd.device = &shca->ib_device; |
| |
| /* create internal max MR */ |
| ret = ehca_reg_internal_maxmr(shca, shca->pd, &shca->maxmr); |
| |
| if (ret) { |
| ehca_err(&shca->ib_device, "Cannot create internal MR ret=%i", |
| ret); |
| goto probe5; |
| } |
| |
| ret = ib_register_device(&shca->ib_device, NULL); |
| if (ret) { |
| ehca_err(&shca->ib_device, |
| "ib_register_device() failed ret=%i", ret); |
| goto probe6; |
| } |
| |
| /* create AQP1 for port 1 */ |
| if (ehca_open_aqp1 == 1) { |
| shca->sport[0].port_state = IB_PORT_DOWN; |
| ret = ehca_create_aqp1(shca, 1); |
| if (ret) { |
| ehca_err(&shca->ib_device, |
| "Cannot create AQP1 for port 1."); |
| goto probe7; |
| } |
| } |
| |
| /* create AQP1 for port 2 */ |
| if ((ehca_open_aqp1 == 1) && (shca->num_ports == 2)) { |
| shca->sport[1].port_state = IB_PORT_DOWN; |
| ret = ehca_create_aqp1(shca, 2); |
| if (ret) { |
| ehca_err(&shca->ib_device, |
| "Cannot create AQP1 for port 2."); |
| goto probe8; |
| } |
| } |
| |
| ret = sysfs_create_group(&dev->dev.kobj, &ehca_dev_attr_grp); |
| if (ret) /* only complain; we can live without attributes */ |
| ehca_err(&shca->ib_device, |
| "Cannot create device attributes ret=%d", ret); |
| |
| spin_lock_irqsave(&shca_list_lock, flags); |
| list_add(&shca->shca_list, &shca_list); |
| spin_unlock_irqrestore(&shca_list_lock, flags); |
| |
| return 0; |
| |
| probe8: |
| ret = ehca_destroy_aqp1(&shca->sport[0]); |
| if (ret) |
| ehca_err(&shca->ib_device, |
| "Cannot destroy AQP1 for port 1. ret=%i", ret); |
| |
| probe7: |
| ib_unregister_device(&shca->ib_device); |
| |
| probe6: |
| ret = ehca_dereg_internal_maxmr(shca); |
| if (ret) |
| ehca_err(&shca->ib_device, |
| "Cannot destroy internal MR. ret=%x", ret); |
| |
| probe5: |
| ret = ehca_dealloc_pd(&shca->pd->ib_pd); |
| if (ret) |
| ehca_err(&shca->ib_device, |
| "Cannot destroy internal PD. ret=%x", ret); |
| |
| probe4: |
| ret = ehca_destroy_eq(shca, &shca->neq); |
| if (ret) |
| ehca_err(&shca->ib_device, |
| "Cannot destroy NEQ. ret=%x", ret); |
| |
| probe3: |
| ret = ehca_destroy_eq(shca, &shca->eq); |
| if (ret) |
| ehca_err(&shca->ib_device, |
| "Cannot destroy EQ. ret=%x", ret); |
| |
| probe1: |
| ib_dealloc_device(&shca->ib_device); |
| |
| return -EINVAL; |
| } |
| |
| static int __devexit ehca_remove(struct of_device *dev) |
| { |
| struct ehca_shca *shca = dev_get_drvdata(&dev->dev); |
| unsigned long flags; |
| int ret; |
| |
| sysfs_remove_group(&dev->dev.kobj, &ehca_dev_attr_grp); |
| |
| if (ehca_open_aqp1 == 1) { |
| int i; |
| for (i = 0; i < shca->num_ports; i++) { |
| ret = ehca_destroy_aqp1(&shca->sport[i]); |
| if (ret) |
| ehca_err(&shca->ib_device, |
| "Cannot destroy AQP1 for port %x " |
| "ret=%i", ret, i); |
| } |
| } |
| |
| ib_unregister_device(&shca->ib_device); |
| |
| ret = ehca_dereg_internal_maxmr(shca); |
| if (ret) |
| ehca_err(&shca->ib_device, |
| "Cannot destroy internal MR. ret=%i", ret); |
| |
| ret = ehca_dealloc_pd(&shca->pd->ib_pd); |
| if (ret) |
| ehca_err(&shca->ib_device, |
| "Cannot destroy internal PD. ret=%i", ret); |
| |
| ret = ehca_destroy_eq(shca, &shca->eq); |
| if (ret) |
| ehca_err(&shca->ib_device, "Cannot destroy EQ. ret=%i", ret); |
| |
| ret = ehca_destroy_eq(shca, &shca->neq); |
| if (ret) |
| ehca_err(&shca->ib_device, "Canot destroy NEQ. ret=%i", ret); |
| |
| ib_dealloc_device(&shca->ib_device); |
| |
| spin_lock_irqsave(&shca_list_lock, flags); |
| list_del(&shca->shca_list); |
| spin_unlock_irqrestore(&shca_list_lock, flags); |
| |
| return ret; |
| } |
| |
| static struct of_device_id ehca_device_table[] = |
| { |
| { |
| .name = "lhca", |
| .compatible = "IBM,lhca", |
| }, |
| {}, |
| }; |
| MODULE_DEVICE_TABLE(of, ehca_device_table); |
| |
| static struct of_platform_driver ehca_driver = { |
| .name = "ehca", |
| .match_table = ehca_device_table, |
| .probe = ehca_probe, |
| .remove = ehca_remove, |
| .driver = { |
| .groups = ehca_drv_attr_groups, |
| }, |
| }; |
| |
| void ehca_poll_eqs(unsigned long data) |
| { |
| struct ehca_shca *shca; |
| |
| spin_lock(&shca_list_lock); |
| list_for_each_entry(shca, &shca_list, shca_list) { |
| if (shca->eq.is_initialized) { |
| /* call deadman proc only if eq ptr does not change */ |
| struct ehca_eq *eq = &shca->eq; |
| int max = 3; |
| volatile u64 q_ofs, q_ofs2; |
| unsigned long flags; |
| spin_lock_irqsave(&eq->spinlock, flags); |
| q_ofs = eq->ipz_queue.current_q_offset; |
| spin_unlock_irqrestore(&eq->spinlock, flags); |
| do { |
| spin_lock_irqsave(&eq->spinlock, flags); |
| q_ofs2 = eq->ipz_queue.current_q_offset; |
| spin_unlock_irqrestore(&eq->spinlock, flags); |
| max--; |
| } while (q_ofs == q_ofs2 && max > 0); |
| if (q_ofs == q_ofs2) |
| ehca_process_eq(shca, 0); |
| } |
| } |
| mod_timer(&poll_eqs_timer, round_jiffies(jiffies + HZ)); |
| spin_unlock(&shca_list_lock); |
| } |
| |
| static int ehca_mem_notifier(struct notifier_block *nb, |
| unsigned long action, void *data) |
| { |
| static unsigned long ehca_dmem_warn_time; |
| unsigned long flags; |
| |
| switch (action) { |
| case MEM_CANCEL_OFFLINE: |
| case MEM_CANCEL_ONLINE: |
| case MEM_ONLINE: |
| case MEM_OFFLINE: |
| return NOTIFY_OK; |
| case MEM_GOING_ONLINE: |
| case MEM_GOING_OFFLINE: |
| /* only ok if no hca is attached to the lpar */ |
| spin_lock_irqsave(&shca_list_lock, flags); |
| if (list_empty(&shca_list)) { |
| spin_unlock_irqrestore(&shca_list_lock, flags); |
| return NOTIFY_OK; |
| } else { |
| spin_unlock_irqrestore(&shca_list_lock, flags); |
| if (printk_timed_ratelimit(&ehca_dmem_warn_time, |
| 30 * 1000)) |
| ehca_gen_err("DMEM operations are not allowed" |
| "in conjunction with eHCA"); |
| return NOTIFY_BAD; |
| } |
| } |
| return NOTIFY_OK; |
| } |
| |
| static struct notifier_block ehca_mem_nb = { |
| .notifier_call = ehca_mem_notifier, |
| }; |
| |
| static int __init ehca_module_init(void) |
| { |
| int ret; |
| |
| printk(KERN_INFO "eHCA Infiniband Device Driver " |
| "(Version " HCAD_VERSION ")\n"); |
| |
| ret = ehca_create_comp_pool(); |
| if (ret) { |
| ehca_gen_err("Cannot create comp pool."); |
| return ret; |
| } |
| |
| ret = ehca_create_slab_caches(); |
| if (ret) { |
| ehca_gen_err("Cannot create SLAB caches"); |
| ret = -ENOMEM; |
| goto module_init1; |
| } |
| |
| ret = ehca_create_busmap(); |
| if (ret) { |
| ehca_gen_err("Cannot create busmap."); |
| goto module_init2; |
| } |
| |
| ret = ibmebus_register_driver(&ehca_driver); |
| if (ret) { |
| ehca_gen_err("Cannot register eHCA device driver"); |
| ret = -EINVAL; |
| goto module_init3; |
| } |
| |
| ret = register_memory_notifier(&ehca_mem_nb); |
| if (ret) { |
| ehca_gen_err("Failed registering memory add/remove notifier"); |
| goto module_init4; |
| } |
| |
| if (ehca_poll_all_eqs != 1) { |
| ehca_gen_err("WARNING!!!"); |
| ehca_gen_err("It is possible to lose interrupts."); |
| } else { |
| init_timer(&poll_eqs_timer); |
| poll_eqs_timer.function = ehca_poll_eqs; |
| poll_eqs_timer.expires = jiffies + HZ; |
| add_timer(&poll_eqs_timer); |
| } |
| |
| return 0; |
| |
| module_init4: |
| ibmebus_unregister_driver(&ehca_driver); |
| |
| module_init3: |
| ehca_destroy_busmap(); |
| |
| module_init2: |
| ehca_destroy_slab_caches(); |
| |
| module_init1: |
| ehca_destroy_comp_pool(); |
| return ret; |
| }; |
| |
| static void __exit ehca_module_exit(void) |
| { |
| if (ehca_poll_all_eqs == 1) |
| del_timer_sync(&poll_eqs_timer); |
| |
| ibmebus_unregister_driver(&ehca_driver); |
| |
| unregister_memory_notifier(&ehca_mem_nb); |
| |
| ehca_destroy_busmap(); |
| |
| ehca_destroy_slab_caches(); |
| |
| ehca_destroy_comp_pool(); |
| |
| idr_destroy(&ehca_cq_idr); |
| idr_destroy(&ehca_qp_idr); |
| }; |
| |
| module_init(ehca_module_init); |
| module_exit(ehca_module_exit); |