+++ /dev/null
-/*
- * 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 bool ehca_open_aqp1 = 0;
-static int ehca_hw_level = 0;
-static bool ehca_poll_all_eqs = 1;
-
-int ehca_debug_level = 0;
-int ehca_nr_ports = -1;
-bool ehca_use_hp_mr = 0;
-int ehca_port_act_time = 30;
-int ehca_static_rate = -1;
-bool 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, bint, 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();
- ret = -ENOMEM;
- 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->dev.of_node->full_name);
- loc_code = of_get_property(shca->ofdev->dev.of_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 = !EHCA_BMASK_GET(HCA_CAP_H_ALLOC_RES_SYNC,
- shca->hca_cap);
-
- /* 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 ehca_probe(struct platform_device *dev)
-{
- struct ehca_shca *shca;
- const u64 *handle;
- struct ib_pd *ibpd;
- int ret, i, eq_size;
- unsigned long flags;
-
- handle = of_get_property(dev->dev.of_node, "ibm,hca-handle", NULL);
- if (!handle) {
- ehca_gen_err("Cannot get eHCA handle for adapter: %s.",
- dev->dev.of_node->full_name);
- return -ENODEV;
- }
-
- if (!(*handle)) {
- ehca_gen_err("Wrong eHCA handle for adapter: %s.",
- dev->dev.of_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 ehca_remove(struct platform_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 platform_driver ehca_driver = {
- .probe = ehca_probe,
- .remove = ehca_remove,
- .driver = {
- .name = "ehca",
- .owner = THIS_MODULE,
- .groups = ehca_drv_attr_groups,
- .of_match_table = ehca_device_table,
- },
-};
-
-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);
Code Review / kvmfornfv.git / blobdiff