--- /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 "ehca_classes.h"
+#include "ehca_iverbs.h"
+#include "ehca_mrmw.h"
+#include "ehca_tools.h"
+#include "hcp_if.h"
+
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
+MODULE_DESCRIPTION("IBM eServer HCA InfiniBand Device Driver");
+MODULE_VERSION("SVNEHCA_0019");
+
+int ehca_open_aqp1 = 0;
+int ehca_debug_level = 0;
+int ehca_hw_level = 0;
+int ehca_nr_ports = 2;
+int ehca_use_hp_mr = 0;
+int ehca_port_act_time = 30;
+int ehca_poll_all_eqs = 1;
+int ehca_static_rate = -1;
+
+module_param_named(open_aqp1, ehca_open_aqp1, int, 0);
+module_param_named(debug_level, ehca_debug_level, int, 0);
+module_param_named(hw_level, ehca_hw_level, int, 0);
+module_param_named(nr_ports, ehca_nr_ports, int, 0);
+module_param_named(use_hp_mr, ehca_use_hp_mr, int, 0);
+module_param_named(port_act_time, ehca_port_act_time, int, 0);
+module_param_named(poll_all_eqs, ehca_poll_all_eqs, int, 0);
+module_param_named(static_rate, ehca_static_rate, int, 0);
+
+MODULE_PARM_DESC(open_aqp1,
+ "AQP1 on startup (0: no (default), 1: yes)");
+MODULE_PARM_DESC(debug_level,
+ "debug level"
+ " (0: no debug traces (default), 1: with debug traces)");
+MODULE_PARM_DESC(hw_level,
+ "hardware level"
+ " (0: autosensing (default), 1: v. 0.20, 2: v. 0.21)");
+MODULE_PARM_DESC(nr_ports,
+ "number of connected ports (default: 2)");
+MODULE_PARM_DESC(use_hp_mr,
+ "high performance MRs (0: no (default), 1: yes)");
+MODULE_PARM_DESC(port_act_time,
+ "time to wait for port activation (default: 30 sec)");
+MODULE_PARM_DESC(poll_all_eqs,
+ "polls all event queues periodically"
+ " (0: no, 1: yes (default))");
+MODULE_PARM_DESC(static_rate,
+ "set permanent static rate (default: disabled)");
+
+spinlock_t ehca_qp_idr_lock;
+spinlock_t ehca_cq_idr_lock;
+DEFINE_IDR(ehca_qp_idr);
+DEFINE_IDR(ehca_cq_idr);
+
+
+static struct list_head shca_list; /* list of all registered ehcas */
+static spinlock_t shca_list_lock;
+
+static struct timer_list poll_eqs_timer;
+
+#ifdef CONFIG_PPC_64K_PAGES
+static struct kmem_cache *ctblk_cache = NULL;
+
+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
+
+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;
+ }
+
+#ifdef CONFIG_PPC_64K_PAGES
+ ctblk_cache = kmem_cache_create("ehca_cache_ctblk",
+ EHCA_PAGESIZE, H_CB_ALIGNMENT,
+ SLAB_HWCACHE_ALIGN,
+ NULL, NULL);
+ if (!ctblk_cache) {
+ ehca_gen_err("Cannot create ctblk SLAB cache.");
+ ehca_cleanup_mrmw_cache();
+ goto create_slab_caches5;
+ }
+#endif
+ return 0;
+
+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_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)
+
+int ehca_sense_attributes(struct ehca_shca *shca)
+{
+ int ret = 0;
+ u64 h_ret;
+ struct hipz_query_hca *rblock;
+
+ 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=%lx",
+ h_ret);
+ ret = -EPERM;
+ goto num_ports1;
+ }
+
+ 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) && (revid == 0))
+ shca->hw_level = 0;
+ else if ((hcaaver == 1) && (revid == 1))
+ shca->hw_level = 1;
+ else if ((hcaaver == 1) && (revid == 2))
+ shca->hw_level = 2;
+ }
+ ehca_gen_dbg(" ... hardware level=%x", shca->hw_level);
+
+ shca->sport[0].rate = IB_RATE_30_GBPS;
+ shca->sport[1].rate = IB_RATE_30_GBPS;
+
+num_ports1:
+ 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;
+}
+
+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 = 5;
+ 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.dma_device = &shca->ibmebus_dev->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;
+
+ 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);
+ if (IS_ERR(ibcq)) {
+ ehca_err(&shca->ib_device, "Cannot create AQP1 CQ.");
+ return PTR_ERR(ibcq);
+ }
+ sport->ibcq_aqp1 = ibcq;
+
+ if (sport->ibqp_aqp1) {
+ 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_aqp1 = 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_aqp1);
+ if (ret) {
+ ehca_gen_err("Cannot destroy AQP1 QP. ret=%x", ret);
+ return ret;
+ }
+
+ ret = ib_destroy_cq(sport->ibcq_aqp1);
+ if (ret)
+ ehca_gen_err("Cannot destroy AQP1 CQ. ret=%x", 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;
+}
+
+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_0019)\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);
git://git.onelab.eu / linux-2.6.git / blobdiff