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4c34bdf58c
This patch removes do_mmap() from ehca: - Call remap_pfn_range() for hardware register block - Use vm_insert_page() to register memory allocated for completion queues and queue pairs - The actual mmap() call/trigger is now controlled by user space, ie. libehca Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
859 lines
23 KiB
C
859 lines
23 KiB
C
/*
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* IBM eServer eHCA Infiniband device driver for Linux on POWER
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*
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* module start stop, hca detection
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*
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* Authors: Heiko J Schick <schickhj@de.ibm.com>
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* Hoang-Nam Nguyen <hnguyen@de.ibm.com>
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* Joachim Fenkes <fenkes@de.ibm.com>
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*
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* Copyright (c) 2005 IBM Corporation
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*
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* All rights reserved.
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*
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* This source code is distributed under a dual license of GPL v2.0 and OpenIB
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* BSD.
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*
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* OpenIB BSD License
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef CONFIG_PPC_64K_PAGES
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#include <linux/slab.h>
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#endif
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#include "ehca_classes.h"
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#include "ehca_iverbs.h"
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#include "ehca_mrmw.h"
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#include "ehca_tools.h"
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#include "hcp_if.h"
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MODULE_LICENSE("Dual BSD/GPL");
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MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
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MODULE_DESCRIPTION("IBM eServer HCA InfiniBand Device Driver");
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MODULE_VERSION("SVNEHCA_0020");
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int ehca_open_aqp1 = 0;
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int ehca_debug_level = 0;
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int ehca_hw_level = 0;
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int ehca_nr_ports = 2;
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int ehca_use_hp_mr = 0;
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int ehca_port_act_time = 30;
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int ehca_poll_all_eqs = 1;
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int ehca_static_rate = -1;
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module_param_named(open_aqp1, ehca_open_aqp1, int, 0);
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module_param_named(debug_level, ehca_debug_level, int, 0);
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module_param_named(hw_level, ehca_hw_level, int, 0);
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module_param_named(nr_ports, ehca_nr_ports, int, 0);
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module_param_named(use_hp_mr, ehca_use_hp_mr, int, 0);
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module_param_named(port_act_time, ehca_port_act_time, int, 0);
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module_param_named(poll_all_eqs, ehca_poll_all_eqs, int, 0);
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module_param_named(static_rate, ehca_static_rate, int, 0);
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MODULE_PARM_DESC(open_aqp1,
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"AQP1 on startup (0: no (default), 1: yes)");
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MODULE_PARM_DESC(debug_level,
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"debug level"
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" (0: no debug traces (default), 1: with debug traces)");
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MODULE_PARM_DESC(hw_level,
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"hardware level"
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" (0: autosensing (default), 1: v. 0.20, 2: v. 0.21)");
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MODULE_PARM_DESC(nr_ports,
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"number of connected ports (default: 2)");
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MODULE_PARM_DESC(use_hp_mr,
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"high performance MRs (0: no (default), 1: yes)");
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MODULE_PARM_DESC(port_act_time,
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"time to wait for port activation (default: 30 sec)");
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MODULE_PARM_DESC(poll_all_eqs,
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"polls all event queues periodically"
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" (0: no, 1: yes (default))");
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MODULE_PARM_DESC(static_rate,
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"set permanent static rate (default: disabled)");
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spinlock_t ehca_qp_idr_lock;
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spinlock_t ehca_cq_idr_lock;
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DEFINE_IDR(ehca_qp_idr);
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DEFINE_IDR(ehca_cq_idr);
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static struct list_head shca_list; /* list of all registered ehcas */
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static spinlock_t shca_list_lock;
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static struct timer_list poll_eqs_timer;
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#ifdef CONFIG_PPC_64K_PAGES
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static struct kmem_cache *ctblk_cache = NULL;
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void *ehca_alloc_fw_ctrlblock(gfp_t flags)
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{
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void *ret = kmem_cache_zalloc(ctblk_cache, flags);
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if (!ret)
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ehca_gen_err("Out of memory for ctblk");
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return ret;
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}
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void ehca_free_fw_ctrlblock(void *ptr)
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{
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if (ptr)
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kmem_cache_free(ctblk_cache, ptr);
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}
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#endif
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static int ehca_create_slab_caches(void)
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{
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int ret;
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ret = ehca_init_pd_cache();
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if (ret) {
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ehca_gen_err("Cannot create PD SLAB cache.");
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return ret;
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}
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ret = ehca_init_cq_cache();
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if (ret) {
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ehca_gen_err("Cannot create CQ SLAB cache.");
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goto create_slab_caches2;
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}
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ret = ehca_init_qp_cache();
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if (ret) {
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ehca_gen_err("Cannot create QP SLAB cache.");
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goto create_slab_caches3;
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}
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ret = ehca_init_av_cache();
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if (ret) {
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ehca_gen_err("Cannot create AV SLAB cache.");
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goto create_slab_caches4;
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}
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ret = ehca_init_mrmw_cache();
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if (ret) {
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ehca_gen_err("Cannot create MR&MW SLAB cache.");
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goto create_slab_caches5;
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}
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#ifdef CONFIG_PPC_64K_PAGES
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ctblk_cache = kmem_cache_create("ehca_cache_ctblk",
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EHCA_PAGESIZE, H_CB_ALIGNMENT,
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SLAB_HWCACHE_ALIGN,
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NULL, NULL);
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if (!ctblk_cache) {
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ehca_gen_err("Cannot create ctblk SLAB cache.");
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ehca_cleanup_mrmw_cache();
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goto create_slab_caches5;
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}
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#endif
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return 0;
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create_slab_caches5:
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ehca_cleanup_av_cache();
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create_slab_caches4:
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ehca_cleanup_qp_cache();
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create_slab_caches3:
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ehca_cleanup_cq_cache();
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create_slab_caches2:
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ehca_cleanup_pd_cache();
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return ret;
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}
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static void ehca_destroy_slab_caches(void)
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{
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ehca_cleanup_mrmw_cache();
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ehca_cleanup_av_cache();
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ehca_cleanup_qp_cache();
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ehca_cleanup_cq_cache();
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ehca_cleanup_pd_cache();
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#ifdef CONFIG_PPC_64K_PAGES
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if (ctblk_cache)
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kmem_cache_destroy(ctblk_cache);
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#endif
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}
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#define EHCA_HCAAVER EHCA_BMASK_IBM(32,39)
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#define EHCA_REVID EHCA_BMASK_IBM(40,63)
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int ehca_sense_attributes(struct ehca_shca *shca)
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{
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int ret = 0;
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u64 h_ret;
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struct hipz_query_hca *rblock;
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rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
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if (!rblock) {
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ehca_gen_err("Cannot allocate rblock memory.");
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return -ENOMEM;
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}
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h_ret = hipz_h_query_hca(shca->ipz_hca_handle, rblock);
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if (h_ret != H_SUCCESS) {
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ehca_gen_err("Cannot query device properties. h_ret=%lx",
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h_ret);
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ret = -EPERM;
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goto num_ports1;
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}
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if (ehca_nr_ports == 1)
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shca->num_ports = 1;
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else
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shca->num_ports = (u8)rblock->num_ports;
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ehca_gen_dbg(" ... found %x ports", rblock->num_ports);
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if (ehca_hw_level == 0) {
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u32 hcaaver;
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u32 revid;
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hcaaver = EHCA_BMASK_GET(EHCA_HCAAVER, rblock->hw_ver);
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revid = EHCA_BMASK_GET(EHCA_REVID, rblock->hw_ver);
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ehca_gen_dbg(" ... hardware version=%x:%x", hcaaver, revid);
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if ((hcaaver == 1) && (revid == 0))
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shca->hw_level = 0;
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else if ((hcaaver == 1) && (revid == 1))
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shca->hw_level = 1;
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else if ((hcaaver == 1) && (revid == 2))
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shca->hw_level = 2;
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}
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ehca_gen_dbg(" ... hardware level=%x", shca->hw_level);
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shca->sport[0].rate = IB_RATE_30_GBPS;
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shca->sport[1].rate = IB_RATE_30_GBPS;
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num_ports1:
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ehca_free_fw_ctrlblock(rblock);
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return ret;
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}
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static int init_node_guid(struct ehca_shca *shca)
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{
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int ret = 0;
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struct hipz_query_hca *rblock;
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rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
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if (!rblock) {
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ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
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return -ENOMEM;
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}
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if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) {
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ehca_err(&shca->ib_device, "Can't query device properties");
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ret = -EINVAL;
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goto init_node_guid1;
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}
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memcpy(&shca->ib_device.node_guid, &rblock->node_guid, sizeof(u64));
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init_node_guid1:
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ehca_free_fw_ctrlblock(rblock);
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return ret;
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}
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int ehca_init_device(struct ehca_shca *shca)
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{
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int ret;
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ret = init_node_guid(shca);
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if (ret)
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return ret;
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strlcpy(shca->ib_device.name, "ehca%d", IB_DEVICE_NAME_MAX);
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shca->ib_device.owner = THIS_MODULE;
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shca->ib_device.uverbs_abi_ver = 6;
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shca->ib_device.uverbs_cmd_mask =
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(1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
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(1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
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(1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
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(1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
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(1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
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(1ull << IB_USER_VERBS_CMD_REG_MR) |
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(1ull << IB_USER_VERBS_CMD_DEREG_MR) |
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(1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
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(1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
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(1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
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(1ull << IB_USER_VERBS_CMD_CREATE_QP) |
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(1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
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(1ull << IB_USER_VERBS_CMD_QUERY_QP) |
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(1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
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(1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
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(1ull << IB_USER_VERBS_CMD_DETACH_MCAST);
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shca->ib_device.node_type = RDMA_NODE_IB_CA;
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shca->ib_device.phys_port_cnt = shca->num_ports;
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shca->ib_device.dma_device = &shca->ibmebus_dev->ofdev.dev;
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shca->ib_device.query_device = ehca_query_device;
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shca->ib_device.query_port = ehca_query_port;
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shca->ib_device.query_gid = ehca_query_gid;
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shca->ib_device.query_pkey = ehca_query_pkey;
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/* shca->in_device.modify_device = ehca_modify_device */
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shca->ib_device.modify_port = ehca_modify_port;
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shca->ib_device.alloc_ucontext = ehca_alloc_ucontext;
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shca->ib_device.dealloc_ucontext = ehca_dealloc_ucontext;
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shca->ib_device.alloc_pd = ehca_alloc_pd;
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shca->ib_device.dealloc_pd = ehca_dealloc_pd;
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shca->ib_device.create_ah = ehca_create_ah;
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/* shca->ib_device.modify_ah = ehca_modify_ah; */
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shca->ib_device.query_ah = ehca_query_ah;
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shca->ib_device.destroy_ah = ehca_destroy_ah;
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shca->ib_device.create_qp = ehca_create_qp;
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shca->ib_device.modify_qp = ehca_modify_qp;
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shca->ib_device.query_qp = ehca_query_qp;
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shca->ib_device.destroy_qp = ehca_destroy_qp;
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shca->ib_device.post_send = ehca_post_send;
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shca->ib_device.post_recv = ehca_post_recv;
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shca->ib_device.create_cq = ehca_create_cq;
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shca->ib_device.destroy_cq = ehca_destroy_cq;
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shca->ib_device.resize_cq = ehca_resize_cq;
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shca->ib_device.poll_cq = ehca_poll_cq;
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/* shca->ib_device.peek_cq = ehca_peek_cq; */
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shca->ib_device.req_notify_cq = ehca_req_notify_cq;
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/* shca->ib_device.req_ncomp_notif = ehca_req_ncomp_notif; */
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shca->ib_device.get_dma_mr = ehca_get_dma_mr;
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shca->ib_device.reg_phys_mr = ehca_reg_phys_mr;
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shca->ib_device.reg_user_mr = ehca_reg_user_mr;
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shca->ib_device.query_mr = ehca_query_mr;
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shca->ib_device.dereg_mr = ehca_dereg_mr;
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shca->ib_device.rereg_phys_mr = ehca_rereg_phys_mr;
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shca->ib_device.alloc_mw = ehca_alloc_mw;
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shca->ib_device.bind_mw = ehca_bind_mw;
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shca->ib_device.dealloc_mw = ehca_dealloc_mw;
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shca->ib_device.alloc_fmr = ehca_alloc_fmr;
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shca->ib_device.map_phys_fmr = ehca_map_phys_fmr;
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shca->ib_device.unmap_fmr = ehca_unmap_fmr;
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shca->ib_device.dealloc_fmr = ehca_dealloc_fmr;
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shca->ib_device.attach_mcast = ehca_attach_mcast;
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shca->ib_device.detach_mcast = ehca_detach_mcast;
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/* shca->ib_device.process_mad = ehca_process_mad; */
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shca->ib_device.mmap = ehca_mmap;
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return ret;
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}
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static int ehca_create_aqp1(struct ehca_shca *shca, u32 port)
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{
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struct ehca_sport *sport = &shca->sport[port - 1];
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struct ib_cq *ibcq;
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struct ib_qp *ibqp;
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struct ib_qp_init_attr qp_init_attr;
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int ret;
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if (sport->ibcq_aqp1) {
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ehca_err(&shca->ib_device, "AQP1 CQ is already created.");
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return -EPERM;
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}
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ibcq = ib_create_cq(&shca->ib_device, NULL, NULL, (void*)(-1), 10);
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if (IS_ERR(ibcq)) {
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ehca_err(&shca->ib_device, "Cannot create AQP1 CQ.");
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return PTR_ERR(ibcq);
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}
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sport->ibcq_aqp1 = ibcq;
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if (sport->ibqp_aqp1) {
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ehca_err(&shca->ib_device, "AQP1 QP is already created.");
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ret = -EPERM;
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goto create_aqp1;
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}
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memset(&qp_init_attr, 0, sizeof(struct ib_qp_init_attr));
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qp_init_attr.send_cq = ibcq;
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qp_init_attr.recv_cq = ibcq;
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qp_init_attr.sq_sig_type = IB_SIGNAL_ALL_WR;
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qp_init_attr.cap.max_send_wr = 100;
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qp_init_attr.cap.max_recv_wr = 100;
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qp_init_attr.cap.max_send_sge = 2;
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qp_init_attr.cap.max_recv_sge = 1;
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qp_init_attr.qp_type = IB_QPT_GSI;
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qp_init_attr.port_num = port;
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qp_init_attr.qp_context = NULL;
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qp_init_attr.event_handler = NULL;
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qp_init_attr.srq = NULL;
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ibqp = ib_create_qp(&shca->pd->ib_pd, &qp_init_attr);
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if (IS_ERR(ibqp)) {
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ehca_err(&shca->ib_device, "Cannot create AQP1 QP.");
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ret = PTR_ERR(ibqp);
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goto create_aqp1;
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}
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sport->ibqp_aqp1 = ibqp;
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return 0;
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create_aqp1:
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ib_destroy_cq(sport->ibcq_aqp1);
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return ret;
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}
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static int ehca_destroy_aqp1(struct ehca_sport *sport)
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{
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int ret;
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ret = ib_destroy_qp(sport->ibqp_aqp1);
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if (ret) {
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ehca_gen_err("Cannot destroy AQP1 QP. ret=%x", ret);
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return ret;
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}
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ret = ib_destroy_cq(sport->ibcq_aqp1);
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if (ret)
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ehca_gen_err("Cannot destroy AQP1 CQ. ret=%x", ret);
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return ret;
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}
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static ssize_t ehca_show_debug_level(struct device_driver *ddp, char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%d\n",
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ehca_debug_level);
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}
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|
|
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;
|
|
}
|
|
|
|
DRIVER_ATTR(debug_level, S_IRUSR | S_IWUSR,
|
|
ehca_show_debug_level, ehca_store_debug_level);
|
|
|
|
void ehca_create_driver_sysfs(struct ibmebus_driver *drv)
|
|
{
|
|
driver_create_file(&drv->driver, &driver_attr_debug_level);
|
|
}
|
|
|
|
void ehca_remove_driver_sysfs(struct ibmebus_driver *drv)
|
|
{
|
|
driver_remove_file(&drv->driver, &driver_attr_debug_level);
|
|
}
|
|
|
|
#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->driver_data; \
|
|
\
|
|
rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL); \
|
|
if (!rblock) { \
|
|
dev_err(dev, "Can't allocate rblock memory."); \
|
|
return 0; \
|
|
} \
|
|
\
|
|
if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) { \
|
|
dev_err(dev, "Can't query device properties"); \
|
|
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->driver_data;
|
|
|
|
return sprintf(buf, "%lx\n", shca->ipz_hca_handle.handle);
|
|
|
|
}
|
|
static DEVICE_ATTR(adapter_handle, S_IRUGO, ehca_show_adapter_handle, NULL);
|
|
|
|
|
|
void ehca_create_device_sysfs(struct ibmebus_dev *dev)
|
|
{
|
|
device_create_file(&dev->ofdev.dev, &dev_attr_adapter_handle);
|
|
device_create_file(&dev->ofdev.dev, &dev_attr_num_ports);
|
|
device_create_file(&dev->ofdev.dev, &dev_attr_hw_ver);
|
|
device_create_file(&dev->ofdev.dev, &dev_attr_max_eq);
|
|
device_create_file(&dev->ofdev.dev, &dev_attr_cur_eq);
|
|
device_create_file(&dev->ofdev.dev, &dev_attr_max_cq);
|
|
device_create_file(&dev->ofdev.dev, &dev_attr_cur_cq);
|
|
device_create_file(&dev->ofdev.dev, &dev_attr_max_qp);
|
|
device_create_file(&dev->ofdev.dev, &dev_attr_cur_qp);
|
|
device_create_file(&dev->ofdev.dev, &dev_attr_max_mr);
|
|
device_create_file(&dev->ofdev.dev, &dev_attr_cur_mr);
|
|
device_create_file(&dev->ofdev.dev, &dev_attr_max_mw);
|
|
device_create_file(&dev->ofdev.dev, &dev_attr_cur_mw);
|
|
device_create_file(&dev->ofdev.dev, &dev_attr_max_pd);
|
|
device_create_file(&dev->ofdev.dev, &dev_attr_max_ah);
|
|
}
|
|
|
|
void ehca_remove_device_sysfs(struct ibmebus_dev *dev)
|
|
{
|
|
device_remove_file(&dev->ofdev.dev, &dev_attr_adapter_handle);
|
|
device_remove_file(&dev->ofdev.dev, &dev_attr_num_ports);
|
|
device_remove_file(&dev->ofdev.dev, &dev_attr_hw_ver);
|
|
device_remove_file(&dev->ofdev.dev, &dev_attr_max_eq);
|
|
device_remove_file(&dev->ofdev.dev, &dev_attr_cur_eq);
|
|
device_remove_file(&dev->ofdev.dev, &dev_attr_max_cq);
|
|
device_remove_file(&dev->ofdev.dev, &dev_attr_cur_cq);
|
|
device_remove_file(&dev->ofdev.dev, &dev_attr_max_qp);
|
|
device_remove_file(&dev->ofdev.dev, &dev_attr_cur_qp);
|
|
device_remove_file(&dev->ofdev.dev, &dev_attr_max_mr);
|
|
device_remove_file(&dev->ofdev.dev, &dev_attr_cur_mr);
|
|
device_remove_file(&dev->ofdev.dev, &dev_attr_max_mw);
|
|
device_remove_file(&dev->ofdev.dev, &dev_attr_cur_mw);
|
|
device_remove_file(&dev->ofdev.dev, &dev_attr_max_pd);
|
|
device_remove_file(&dev->ofdev.dev, &dev_attr_max_ah);
|
|
}
|
|
|
|
static int __devinit ehca_probe(struct ibmebus_dev *dev,
|
|
const struct of_device_id *id)
|
|
{
|
|
struct ehca_shca *shca;
|
|
u64 *handle;
|
|
struct ib_pd *ibpd;
|
|
int ret;
|
|
|
|
handle = (u64 *)get_property(dev->ofdev.node, "ibm,hca-handle", NULL);
|
|
if (!handle) {
|
|
ehca_gen_err("Cannot get eHCA handle for adapter: %s.",
|
|
dev->ofdev.node->full_name);
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (!(*handle)) {
|
|
ehca_gen_err("Wrong eHCA handle for adapter: %s.",
|
|
dev->ofdev.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;
|
|
}
|
|
|
|
shca->ibmebus_dev = dev;
|
|
shca->ipz_hca_handle.handle = *handle;
|
|
dev->ofdev.dev.driver_data = 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;
|
|
}
|
|
|
|
/* create event queues */
|
|
ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, 2048);
|
|
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=%x",
|
|
ret);
|
|
goto probe5;
|
|
}
|
|
|
|
ret = ib_register_device(&shca->ib_device);
|
|
if (ret) {
|
|
ehca_err(&shca->ib_device,
|
|
"ib_register_device() failed ret=%x", 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;
|
|
}
|
|
}
|
|
|
|
ehca_create_device_sysfs(dev);
|
|
|
|
spin_lock(&shca_list_lock);
|
|
list_add(&shca->shca_list, &shca_list);
|
|
spin_unlock(&shca_list_lock);
|
|
|
|
return 0;
|
|
|
|
probe8:
|
|
ret = ehca_destroy_aqp1(&shca->sport[0]);
|
|
if (ret)
|
|
ehca_err(&shca->ib_device,
|
|
"Cannot destroy AQP1 for port 1. ret=%x", 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 ibmebus_dev *dev)
|
|
{
|
|
struct ehca_shca *shca = dev->ofdev.dev.driver_data;
|
|
int ret;
|
|
|
|
ehca_remove_device_sysfs(dev);
|
|
|
|
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=%x", 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=%x", ret);
|
|
|
|
ret = ehca_dealloc_pd(&shca->pd->ib_pd);
|
|
if (ret)
|
|
ehca_err(&shca->ib_device,
|
|
"Cannot destroy internal PD. ret=%x", ret);
|
|
|
|
ret = ehca_destroy_eq(shca, &shca->eq);
|
|
if (ret)
|
|
ehca_err(&shca->ib_device, "Cannot destroy EQ. ret=%x", ret);
|
|
|
|
ret = ehca_destroy_eq(shca, &shca->neq);
|
|
if (ret)
|
|
ehca_err(&shca->ib_device, "Canot destroy NEQ. ret=%x", ret);
|
|
|
|
ib_dealloc_device(&shca->ib_device);
|
|
|
|
spin_lock(&shca_list_lock);
|
|
list_del(&shca->shca_list);
|
|
spin_unlock(&shca_list_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct of_device_id ehca_device_table[] =
|
|
{
|
|
{
|
|
.name = "lhca",
|
|
.compatible = "IBM,lhca",
|
|
},
|
|
{},
|
|
};
|
|
|
|
static struct ibmebus_driver ehca_driver = {
|
|
.name = "ehca",
|
|
.id_table = ehca_device_table,
|
|
.probe = ehca_probe,
|
|
.remove = ehca_remove,
|
|
};
|
|
|
|
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)
|
|
ehca_tasklet_eq((unsigned long)(void*)shca);
|
|
}
|
|
mod_timer(&poll_eqs_timer, jiffies + HZ);
|
|
spin_unlock(&shca_list_lock);
|
|
}
|
|
|
|
int __init ehca_module_init(void)
|
|
{
|
|
int ret;
|
|
|
|
printk(KERN_INFO "eHCA Infiniband Device Driver "
|
|
"(Rel.: SVNEHCA_0020)\n");
|
|
idr_init(&ehca_qp_idr);
|
|
idr_init(&ehca_cq_idr);
|
|
spin_lock_init(&ehca_qp_idr_lock);
|
|
spin_lock_init(&ehca_cq_idr_lock);
|
|
|
|
INIT_LIST_HEAD(&shca_list);
|
|
spin_lock_init(&shca_list_lock);
|
|
|
|
if ((ret = ehca_create_comp_pool())) {
|
|
ehca_gen_err("Cannot create comp pool.");
|
|
return ret;
|
|
}
|
|
|
|
if ((ret = ehca_create_slab_caches())) {
|
|
ehca_gen_err("Cannot create SLAB caches");
|
|
ret = -ENOMEM;
|
|
goto module_init1;
|
|
}
|
|
|
|
if ((ret = ibmebus_register_driver(&ehca_driver))) {
|
|
ehca_gen_err("Cannot register eHCA device driver");
|
|
ret = -EINVAL;
|
|
goto module_init2;
|
|
}
|
|
|
|
ehca_create_driver_sysfs(&ehca_driver);
|
|
|
|
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_init2:
|
|
ehca_destroy_slab_caches();
|
|
|
|
module_init1:
|
|
ehca_destroy_comp_pool();
|
|
return ret;
|
|
};
|
|
|
|
void __exit ehca_module_exit(void)
|
|
{
|
|
if (ehca_poll_all_eqs == 1)
|
|
del_timer_sync(&poll_eqs_timer);
|
|
|
|
ehca_remove_driver_sysfs(&ehca_driver);
|
|
ibmebus_unregister_driver(&ehca_driver);
|
|
|
|
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);
|