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OpenCloudOS-Kernel/drivers/infiniband/hw/ehca/ehca_main.c

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/*
* 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_0018");
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(void)
{
void *ret = kmem_cache_zalloc(ctblk_cache, SLAB_KERNEL);
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();
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();
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(); \
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_0018)\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);
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