diff options
Diffstat (limited to 'sys/contrib/rdma/rdma_device.c')
| -rw-r--r-- | sys/contrib/rdma/rdma_device.c | 776 |
1 files changed, 0 insertions, 776 deletions
diff --git a/sys/contrib/rdma/rdma_device.c b/sys/contrib/rdma/rdma_device.c deleted file mode 100644 index 53cf31f..0000000 --- a/sys/contrib/rdma/rdma_device.c +++ /dev/null @@ -1,776 +0,0 @@ -/* - * Copyright (c) 2004 Topspin Communications. All rights reserved. - * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * 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. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - * $Id: device.c 1349 2004-12-16 21:09:43Z roland $ - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/types.h> -#include <sys/param.h> -#include <sys/condvar.h> -#include <sys/systm.h> -#include <sys/malloc.h> -#include <sys/kernel.h> -#include <sys/libkern.h> -#include <sys/socket.h> -#include <sys/module.h> -#include <sys/lock.h> -#include <sys/mutex.h> -#include <sys/rwlock.h> -#include <sys/queue.h> -#include <sys/taskqueue.h> -#include <sys/priv.h> -#include <sys/syslog.h> - -#include <contrib/rdma/core_priv.h> - -struct ib_client_data { - TAILQ_ENTRY(ib_client_data) list; - struct ib_client *client; - void * data; -}; - -static TAILQ_HEAD(, ib_device) device_list; -static TAILQ_HEAD(client_list_s, ib_client) client_list; - -/* - * device_mutex protects access to both device_list and client_list. - * There's no real point to using multiple locks or something fancier - * like an rwsem: we always access both lists, and we're always - * modifying one list or the other list. In any case this is not a - * hot path so there's no point in trying to optimize. - */ -static struct mtx device_mutex; - -static int ib_device_check_mandatory(struct ib_device *device) -{ -#define IB_MANDATORY_FUNC(x) { offsetof(struct ib_device, x), #x } -#define MANDATORY_TABLE_DEPTH 19 - static const struct { - size_t offset; - char *name; - } mandatory_table[] = { - IB_MANDATORY_FUNC(query_device), - IB_MANDATORY_FUNC(query_port), - IB_MANDATORY_FUNC(query_pkey), - IB_MANDATORY_FUNC(query_gid), - IB_MANDATORY_FUNC(alloc_pd), - IB_MANDATORY_FUNC(dealloc_pd), - IB_MANDATORY_FUNC(create_ah), - IB_MANDATORY_FUNC(destroy_ah), - IB_MANDATORY_FUNC(create_qp), - IB_MANDATORY_FUNC(modify_qp), - IB_MANDATORY_FUNC(destroy_qp), - IB_MANDATORY_FUNC(post_send), - IB_MANDATORY_FUNC(post_recv), - IB_MANDATORY_FUNC(create_cq), - IB_MANDATORY_FUNC(destroy_cq), - IB_MANDATORY_FUNC(poll_cq), - IB_MANDATORY_FUNC(req_notify_cq), - IB_MANDATORY_FUNC(get_dma_mr), - IB_MANDATORY_FUNC(dereg_mr) - }; - int i; - - for (i = 0; i < MANDATORY_TABLE_DEPTH; ++i) { - if (!*(void **) ((void *) ((unsigned long)device + mandatory_table[i].offset))) { - log(LOG_WARNING, "Device %s is missing mandatory function %s\n", - device->name, mandatory_table[i].name); - return (EINVAL); - } - } - - return 0; -} - -static struct ib_device *__ib_device_get_by_name(const char *name) -{ - struct ib_device *device; - - TAILQ_FOREACH(device, &device_list, core_list) - if (!strncmp(name, device->name, IB_DEVICE_NAME_MAX)) - return device; - - return NULL; -} - - -static int alloc_name(char *name) -{ - long *inuse; - char buf[IB_DEVICE_NAME_MAX]; - struct ib_device *device; - int i; - - inuse = malloc(PAGE_SIZE, M_DEVBUF, M_NOWAIT); - if (!inuse) - return (ENOMEM); - - TAILQ_FOREACH(device, &device_list, core_list) { - if (!sscanf(device->name, name, &i)) - continue; - if (i < 0 || i >= PAGE_SIZE * 8) - continue; - snprintf(buf, sizeof buf, name, i); - if (!strncmp(buf, device->name, IB_DEVICE_NAME_MAX)) - setbit(inuse, i); - } - - i = find_first_zero_bit(inuse, PAGE_SIZE * 8); - free(inuse, M_DEVBUF); - snprintf(buf, sizeof buf, name, i); - - if (__ib_device_get_by_name(buf)) - return (ENFILE); - - strlcpy(name, buf, IB_DEVICE_NAME_MAX); - return 0; -} - -static int start_port(struct ib_device *device) -{ - return (device->node_type == RDMA_NODE_IB_SWITCH) ? 0 : 1; -} - - -static int end_port(struct ib_device *device) -{ - return (device->node_type == RDMA_NODE_IB_SWITCH) ? - 0 : device->phys_port_cnt; -} - -/** - * ib_alloc_device - allocate an IB device struct - * @size:size of structure to allocate - * - * Low-level drivers should use ib_alloc_device() to allocate &struct - * ib_device. @size is the size of the structure to be allocated, - * including any private data used by the low-level driver. - * ib_dealloc_device() must be used to free structures allocated with - * ib_alloc_device(). - */ -struct ib_device *ib_alloc_device(size_t size) -{ - void *dev; - - if (size < sizeof (struct ib_device)) - panic("size=%zd < sizeof (struct ib_device)=%zd)", - size, sizeof (struct ib_device)); - - dev = malloc(size, M_DEVBUF, M_NOWAIT); - if (dev) - bzero(dev, size); - return dev; -} - -/** - * ib_dealloc_device - free an IB device struct - * @device:structure to free - * - * Free a structure allocated with ib_alloc_device(). - */ -void ib_dealloc_device(struct ib_device *device) -{ - if (device->reg_state == IB_DEV_UNINITIALIZED) { - free(device, M_DEVBUF); - return; - } - - if (device->reg_state != IB_DEV_UNREGISTERED) - panic("device->reg_state=%d != IB_DEV_UNREGISTERED)", - device->reg_state); -#ifdef notyet - ib_device_unregister_sysfs(device); -#endif -} - -static int add_client_context(struct ib_device *device, struct ib_client *client) -{ - struct ib_client_data *context; - - context = malloc(sizeof *context, M_DEVBUF, M_NOWAIT); - if (!context) { - log(LOG_WARNING, "Couldn't allocate client context for %s/%s\n", - device->name, client->name); - return (ENOMEM); - } - - context->client = client; - context->data = NULL; - - mtx_lock(&device->client_data_lock); - TAILQ_INSERT_TAIL(&device->client_data_list, context, list); - mtx_unlock(&device->client_data_lock); - - return 0; -} - -static int read_port_table_lengths(struct ib_device *device) -{ - struct ib_port_attr *tprops = NULL; - int num_ports, ret = ENOMEM; - u8 port_index; - - tprops = malloc(sizeof *tprops, M_DEVBUF, M_NOWAIT); - if (!tprops) - goto out; - - num_ports = end_port(device) - start_port(device) + 1; - - device->pkey_tbl_len = malloc(sizeof *device->pkey_tbl_len * num_ports, - M_DEVBUF, M_NOWAIT); - device->gid_tbl_len = malloc(sizeof *device->gid_tbl_len * num_ports, - M_DEVBUF, M_NOWAIT); - if (!device->pkey_tbl_len || !device->gid_tbl_len) - goto err; - - for (port_index = 0; port_index < num_ports; ++port_index) { - ret = ib_query_port(device, port_index + start_port(device), - tprops); - if (ret) - goto err; - device->pkey_tbl_len[port_index] = tprops->pkey_tbl_len; - device->gid_tbl_len[port_index] = tprops->gid_tbl_len; - } - - ret = 0; - goto out; - -err: - free(device->gid_tbl_len, M_DEVBUF); - free(device->pkey_tbl_len, M_DEVBUF); -out: - free(tprops, M_DEVBUF); - return ret; -} - -/** - * ib_register_device - Register an IB device with IB core - * @device:Device to register - * - * Low-level drivers use ib_register_device() to register their - * devices with the IB core. All registered clients will receive a - * callback for each device that is added. @device must be allocated - * with ib_alloc_device(). - */ -int ib_register_device(struct ib_device *device) -{ - int ret; - - mtx_lock(&device_mutex); - - if (strchr(device->name, '%')) { - ret = alloc_name(device->name); - if (ret) - goto out; - } - - if (ib_device_check_mandatory(device)) { - ret = EINVAL; - goto out; - } - - TAILQ_INIT(&device->event_handler_list); - TAILQ_INIT(&device->client_data_list); - mtx_init(&device->event_handler_lock, "ib event handler", NULL, - MTX_DUPOK|MTX_DEF); - mtx_init(&device->client_data_lock, "ib client data", NULL, - MTX_DUPOK|MTX_DEF); - - ret = read_port_table_lengths(device); - if (ret) { - log(LOG_WARNING, "Couldn't create table lengths cache for device %s\n", - device->name); - goto out; - } - -#ifdef notyet - ret = ib_device_register_sysfs(device); - if (ret) { - log(LOG_WARNING, "Couldn't register device %s with driver model\n", - device->name); - free(device->gid_tbl_len, M_DEVBUF); - free(device->pkey_tbl_len, M_DEVBUF); - goto out; - } -#endif - - TAILQ_INSERT_TAIL(&device_list, device, core_list); - - device->reg_state = IB_DEV_REGISTERED; - - { - struct ib_client *client; - - TAILQ_FOREACH(client, &client_list, list) - if (client->add && !add_client_context(device, client)) - client->add(device); - } - - out: - mtx_unlock(&device_mutex); - return ret; -} - -/** - * ib_unregister_device - Unregister an IB device - * @device:Device to unregister - * - * Unregister an IB device. All clients will receive a remove callback. - */ -void ib_unregister_device(struct ib_device *device) -{ - struct ib_client *client; - struct ib_client_data *context, *tmp; - - mtx_lock(&device_mutex); - - TAILQ_FOREACH_REVERSE(client, &client_list, client_list_s, list) - if (client->remove) - client->remove(device); - - TAILQ_REMOVE(&device_list, device, core_list); - - free(device->gid_tbl_len, M_DEVBUF); - free(device->pkey_tbl_len, M_DEVBUF); - - mtx_unlock(&device_mutex); - - mtx_lock(&device->client_data_lock); - TAILQ_FOREACH_SAFE(context, &device->client_data_list, list, tmp) - free(context, M_DEVBUF); - mtx_unlock(&device->client_data_lock); - - device->reg_state = IB_DEV_UNREGISTERED; -} - -/** - * ib_register_client - Register an IB client - * @client:Client to register - * - * Upper level users of the IB drivers can use ib_register_client() to - * register callbacks for IB device addition and removal. When an IB - * device is added, each registered client's add method will be called - * (in the order the clients were registered), and when a device is - * removed, each client's remove method will be called (in the reverse - * order that clients were registered). In addition, when - * ib_register_client() is called, the client will receive an add - * callback for all devices already registered. - */ -int ib_register_client(struct ib_client *client) -{ - struct ib_device *device; - - mtx_lock(&device_mutex); - - TAILQ_INSERT_TAIL(&client_list, client, list); - TAILQ_FOREACH(device, &device_list, core_list) - if (client->add && !add_client_context(device, client)) - client->add(device); - - mtx_unlock(&device_mutex); - - return 0; -} - -/** - * ib_unregister_client - Unregister an IB client - * @client:Client to unregister - * - * Upper level users use ib_unregister_client() to remove their client - * registration. When ib_unregister_client() is called, the client - * will receive a remove callback for each IB device still registered. - */ -void ib_unregister_client(struct ib_client *client) -{ - struct ib_client_data *context, *tmp; - struct ib_device *device; - - mtx_lock(&device_mutex); - - TAILQ_FOREACH(device, &device_list, core_list) { - if (client->remove) - client->remove(device); - - mtx_lock(&device->client_data_lock); - TAILQ_FOREACH_SAFE(context, &device->client_data_list, list,tmp) - if (context->client == client) { - TAILQ_REMOVE(&device->client_data_list, context, - list); - free(context, M_DEVBUF); - } - mtx_unlock(&device->client_data_lock); - } - TAILQ_REMOVE(&client_list, client, list); - - mtx_unlock(&device_mutex); -} - -/** - * ib_get_client_data - Get IB client context - * @device:Device to get context for - * @client:Client to get context for - * - * ib_get_client_data() returns client context set with - * ib_set_client_data(). - */ -void *ib_get_client_data(struct ib_device *device, struct ib_client *client) -{ - struct ib_client_data *context; - void *ret = NULL; - - mtx_lock(&device->client_data_lock); - TAILQ_FOREACH(context, &device->client_data_list, list) - if (context->client == client) { - ret = context->data; - break; - } - mtx_unlock(&device->client_data_lock); - - return ret; -} - -/** - * ib_set_client_data - Set IB client context - * @device:Device to set context for - * @client:Client to set context for - * @data:Context to set - * - * ib_set_client_data() sets client context that can be retrieved with - * ib_get_client_data(). - */ -void ib_set_client_data(struct ib_device *device, struct ib_client *client, - void *data) -{ - struct ib_client_data *context; - - mtx_lock(&device->client_data_lock); - TAILQ_FOREACH(context, &device->client_data_list, list) - if (context->client == client) { - context->data = data; - goto out; - } - - log(LOG_WARNING, "No client context found for %s/%s\n", - device->name, client->name); - -out: - mtx_unlock(&device->client_data_lock); -} - -/** - * ib_register_event_handler - Register an IB event handler - * @event_handler:Handler to register - * - * ib_register_event_handler() registers an event handler that will be - * called back when asynchronous IB events occur (as defined in - * chapter 11 of the InfiniBand Architecture Specification). This - * callback may occur in interrupt context. - */ -int ib_register_event_handler (struct ib_event_handler *event_handler) -{ - mtx_lock(&event_handler->device->event_handler_lock); - TAILQ_INSERT_TAIL(&event_handler->device->event_handler_list, - event_handler, list); - mtx_unlock(&event_handler->device->event_handler_lock); - - return 0; -} - -/** - * ib_unregister_event_handler - Unregister an event handler - * @event_handler:Handler to unregister - * - * Unregister an event handler registered with - * ib_register_event_handler(). - */ -int ib_unregister_event_handler(struct ib_event_handler *event_handler) -{ - mtx_lock(&event_handler->device->event_handler_lock); - TAILQ_REMOVE(&event_handler->device->event_handler_list, event_handler, - list); - mtx_unlock(&event_handler->device->event_handler_lock); - - return 0; -} - -/** - * ib_dispatch_event - Dispatch an asynchronous event - * @event:Event to dispatch - * - * Low-level drivers must call ib_dispatch_event() to dispatch the - * event to all registered event handlers when an asynchronous event - * occurs. - */ -void ib_dispatch_event(struct ib_event *event) -{ - struct ib_event_handler *handler; - - mtx_lock(&event->device->event_handler_lock); - - TAILQ_FOREACH(handler, &event->device->event_handler_list, list) - handler->handler(handler, event); - - mtx_unlock(&event->device->event_handler_lock); -} - -/** - * ib_query_device - Query IB device attributes - * @device:Device to query - * @device_attr:Device attributes - * - * ib_query_device() returns the attributes of a device through the - * @device_attr pointer. - */ -int ib_query_device(struct ib_device *device, - struct ib_device_attr *device_attr) -{ - return device->query_device(device, device_attr); -} - -/** - * ib_query_port - Query IB port attributes - * @device:Device to query - * @port_num:Port number to query - * @port_attr:Port attributes - * - * ib_query_port() returns the attributes of a port through the - * @port_attr pointer. - */ -int ib_query_port(struct ib_device *device, - u8 port_num, - struct ib_port_attr *port_attr) -{ - if (port_num < start_port(device) || port_num > end_port(device)) - return (EINVAL); - - return device->query_port(device, port_num, port_attr); -} - -/** - * ib_query_gid - Get GID table entry - * @device:Device to query - * @port_num:Port number to query - * @index:GID table index to query - * @gid:Returned GID - * - * ib_query_gid() fetches the specified GID table entry. - */ -int ib_query_gid(struct ib_device *device, - u8 port_num, int index, union ib_gid *gid) -{ - return device->query_gid(device, port_num, index, gid); -} - -/** - * ib_query_pkey - Get P_Key table entry - * @device:Device to query - * @port_num:Port number to query - * @index:P_Key table index to query - * @pkey:Returned P_Key - * - * ib_query_pkey() fetches the specified P_Key table entry. - */ -int ib_query_pkey(struct ib_device *device, - u8 port_num, u16 index, u16 *pkey) -{ - return device->query_pkey(device, port_num, index, pkey); -} - -/** - * ib_modify_device - Change IB device attributes - * @device:Device to modify - * @device_modify_mask:Mask of attributes to change - * @device_modify:New attribute values - * - * ib_modify_device() changes a device's attributes as specified by - * the @device_modify_mask and @device_modify structure. - */ -int ib_modify_device(struct ib_device *device, - int device_modify_mask, - struct ib_device_modify *device_modify) -{ - return device->modify_device(device, device_modify_mask, - device_modify); -} - -/** - * ib_modify_port - Modifies the attributes for the specified port. - * @device: The device to modify. - * @port_num: The number of the port to modify. - * @port_modify_mask: Mask used to specify which attributes of the port - * to change. - * @port_modify: New attribute values for the port. - * - * ib_modify_port() changes a port's attributes as specified by the - * @port_modify_mask and @port_modify structure. - */ -int ib_modify_port(struct ib_device *device, - u8 port_num, int port_modify_mask, - struct ib_port_modify *port_modify) -{ - if (port_num < start_port(device) || port_num > end_port(device)) - return (EINVAL); - - return device->modify_port(device, port_num, port_modify_mask, - port_modify); -} - -/** - * ib_find_gid - Returns the port number and GID table index where - * a specified GID value occurs. - * @device: The device to query. - * @gid: The GID value to search for. - * @port_num: The port number of the device where the GID value was found. - * @index: The index into the GID table where the GID was found. This - * parameter may be NULL. - */ -int ib_find_gid(struct ib_device *device, union ib_gid *gid, - u8 *port_num, u16 *index) -{ - union ib_gid tmp_gid; - int ret, port, i; - - for (port = start_port(device); port <= end_port(device); ++port) { - for (i = 0; i < device->gid_tbl_len[port - start_port(device)]; ++i) { - ret = ib_query_gid(device, port, i, &tmp_gid); - if (ret) - return ret; - if (!memcmp(&tmp_gid, gid, sizeof *gid)) { - *port_num = port; - if (index) - *index = i; - return 0; - } - } - } - - return (ENOENT); -} - -/** - * ib_find_pkey - Returns the PKey table index where a specified - * PKey value occurs. - * @device: The device to query. - * @port_num: The port number of the device to search for the PKey. - * @pkey: The PKey value to search for. - * @index: The index into the PKey table where the PKey was found. - */ -int ib_find_pkey(struct ib_device *device, - u8 port_num, u16 pkey, u16 *index) -{ - int ret, i; - u16 tmp_pkey; - - for (i = 0; i < device->pkey_tbl_len[port_num - start_port(device)]; ++i) { - ret = ib_query_pkey(device, port_num, i, &tmp_pkey); - if (ret) - return ret; - - if (pkey == tmp_pkey) { - *index = i; - return 0; - } - } - - return (ENOENT); -} - -static int rdma_core_init(void) -{ - int ret; -#ifdef notyet - ret = ib_sysfs_setup(); - if (ret) - log(LOG_WARNING, "Couldn't create InfiniBand device class\n"); -#endif - - mtx_init(&device_mutex, "rdma_device mutex", NULL, MTX_DEF); - TAILQ_INIT(&client_list); - TAILQ_INIT(&device_list); - ret = ib_cache_setup(); - if (ret) { - log(LOG_WARNING, "Couldn't set up InfiniBand P_Key/GID cache\n"); -#ifdef notyet - ib_sysfs_cleanup(); -#endif - } - - return ret; -} - -static void rdma_core_cleanup(void) -{ - ib_cache_cleanup(); -#ifdef notyet - ib_sysfs_cleanup(); - /* Make sure that any pending umem accounting work is done. */ - flush_scheduled_work(); -#endif -} - -static int -rdma_core_load(module_t mod, int cmd, void *arg) -{ - int err = 0; - - switch (cmd) { - case MOD_LOAD: - printf("Loading rdma_core.\n"); - rdma_core_init(); - break; - case MOD_QUIESCE: - break; - case MOD_UNLOAD: - printf("Unloading rdma_core.\n"); - rdma_core_cleanup(); - break; - case MOD_SHUTDOWN: - break; - default: - err = EOPNOTSUPP; - break; - } - - return (err); -} - -static moduledata_t mod_data = { - "rdma_core", - rdma_core_load, - 0 -}; - -MODULE_VERSION(rdma_core, 1); -DECLARE_MODULE(rdma_core, mod_data, SI_SUB_EXEC, SI_ORDER_ANY); |
