int ib_find_exact_cached_pkey(struct ib_device *device,
u8 port_num,
u16 pkey,
u16 *index)
{
struct ib_pkey_cache *cache;
unsigned long flags;
int i;
int ret = -ENOENT;
if (port_num < start_port(device) || port_num > end_port(device))
return -EINVAL;
*index = -1;
read_lock_irqsave(&device->cache.lock, flags);
if (!device->cache.pkey_cache)
goto out;
cache = device->cache.pkey_cache[port_num - start_port(device)];
if (!cache)
goto out;
for (i = 0; i < cache->table_len; ++i)
if (cache->table[i] == pkey) {
*index = i;
ret = 0;
break;
}
out:
read_unlock_irqrestore(&device->cache.lock, flags);
return ret;
}
static int _roce_gid_cache_find_gid(struct ib_device *ib_dev, union ib_gid *gid,
const struct ib_gid_attr *val,
unsigned long mask,
u8 *port, u16 *index)
{
struct ib_roce_gid_cache *cache;
u8 p;
int local_index;
if (!ib_dev->cache.roce_gid_cache)
return -ENOENT;
for (p = 0; p < ib_dev->phys_port_cnt; p++) {
if (rdma_port_get_link_layer(ib_dev, p + start_port(ib_dev)) !=
IB_LINK_LAYER_ETHERNET)
continue;
cache = ib_dev->cache.roce_gid_cache[p];
if (!cache || !cache->active)
continue;
local_index = find_gid(cache, gid, val, mask);
if (local_index >= 0) {
if (index)
*index = local_index;
if (port)
*port = p + start_port(ib_dev);
return 0;
}
}
return -ENOENT;
}
int ib_find_cached_gid(struct ib_device *device,
union ib_gid *gid,
u8 *port_num,
u16 *index)
{
struct ib_gid_cache *cache;
unsigned long flags;
int p, i;
int ret = -ENOENT;
*port_num = -1;
if (index)
*index = -1;
read_lock_irqsave(&device->cache.lock, flags);
for (p = 0; p <= end_port(device) - start_port(device); ++p) {
cache = device->cache.gid_cache[p];
for (i = 0; i < cache->table_len; ++i) {
if (!memcmp(gid, &cache->table[i], sizeof *gid)) {
*port_num = p + start_port(device);
if (index)
*index = i;
ret = 0;
goto found;
}
}
}
found:
read_unlock_irqrestore(&device->cache.lock, flags);
return ret;
}
int ib_get_cached_pkey(struct ib_device *device,
u8 port_num,
int index,
u16 *pkey)
{
struct ib_pkey_cache *cache;
unsigned long flags;
int i, ret = 0;
if (port_num < start_port(device) || port_num > end_port(device))
return -EINVAL;
read_lock_irqsave(&device->cache.lock, flags);
cache = device->cache.pkey_cache[port_num - start_port(device)];
if (index < 0 || index >= cache->table_len) {
ret = -EINVAL;
goto out_unlock;
}
for (i = 0; i < cache->table_len; ++i)
if (cache->entry[i].index == index)
break;
if (i < cache->table_len)
*pkey = cache->entry[i].pkey;
else
*pkey = 0x0000;
out_unlock:
read_unlock_irqrestore(&device->cache.lock, flags);
return ret;
}
int roce_gid_cache_find_gid_by_port(struct ib_device *ib_dev, union ib_gid *gid,
enum ib_gid_type gid_type, u8 port,
struct net *net, int if_index, u16 *index)
{
int local_index;
struct ib_roce_gid_cache *cache;
unsigned long mask = GID_ATTR_FIND_MASK_GID_TYPE;
struct ib_gid_attr val = {.gid_type = gid_type};
if (!ib_dev->cache.roce_gid_cache || port < start_port(ib_dev) ||
port >= (start_port(ib_dev) + ib_dev->phys_port_cnt))
return -ENOENT;
cache = ib_dev->cache.roce_gid_cache[port - start_port(ib_dev)];
if (!cache || !cache->active)
return -ENOENT;
mask |= get_netdev_from_ifindex(net, if_index, &val);
local_index = find_gid(cache, gid, &val, mask);
if (local_index >= 0) {
if (index)
*index = local_index;
return 0;
}
return -ENOENT;
}
int ib_get_cached_pkey(struct ib_device *device,
u8 port_num,
int index,
u16 *pkey)
{
struct ib_pkey_cache *cache;
unsigned long flags;
int ret = -EINVAL;
if (port_num < start_port(device) || port_num > end_port(device))
return -EINVAL;
read_lock_irqsave(&device->cache.lock, flags);
if (device->cache.pkey_cache) {
cache = device->cache.pkey_cache[port_num - start_port(device)];
if (cache && index >= 0 && index < cache->table_len) {
*pkey = cache->table[index];
ret = 0;
}
}
read_unlock_irqrestore(&device->cache.lock, flags);
return ret;
}
int ib_get_cached_gid(struct ib_device *device,
u8 port_num,
int index,
union ib_gid *gid)
{
struct ib_gid_cache *cache;
unsigned long flags;
int ret = 0;
if (port_num < start_port(device) || port_num > end_port(device))
return -EINVAL;
read_lock_irqsave(&device->cache.lock, flags);
cache = device->cache.gid_cache[port_num - start_port(device)];
if (index < 0 || index >= cache->table_len)
ret = -EINVAL;
else
*gid = cache->table[index];
read_unlock_irqrestore(&device->cache.lock, flags);
return ret;
}
int ib_find_cached_pkey(struct ib_device *device,
u8 port_num,
u16 pkey,
u16 *index)
{
struct ib_pkey_cache *cache;
unsigned long flags;
int i;
int ret = -ENOENT;
if (port_num < start_port(device) || port_num > end_port(device))
return -EINVAL;
read_lock_irqsave(&device->cache.lock, flags);
cache = device->cache.pkey_cache[port_num - start_port(device)];
*index = -1;
for (i = 0; i < cache->table_len; ++i)
if ((cache->table[i] & 0x7fff) == (pkey & 0x7fff)) {
*index = i;
ret = 0;
break;
}
read_unlock_irqrestore(&device->cache.lock, flags);
return ret;
}
int ib_find_cached_pkey(struct ib_device *device,
u8 port_num,
u16 pkey,
u16 *index)
{
struct ib_pkey_cache *cache;
int i;
int ret = -ENOENT;
if (port_num < start_port(device) || port_num > end_port(device))
return -EINVAL;
mtx_lock(&device->cache.lock);
cache = device->cache.pkey_cache[port_num - start_port(device)];
*index = -1;
for (i = 0; i < cache->table_len; ++i)
if ((cache->table[i] & 0x7fff) == (pkey & 0x7fff)) {
*index = i;
ret = 0;
break;
}
mtx_unlock(&device->cache.lock);
return ret;
}
/* Register console for printk's, etc. */
int __init
init_etrax_debug(void)
{
start_port(port);
#ifdef CONFIG_ETRAX_KGDB
start_port(kgdb_port);
#endif /* CONFIG_ETRAX_KGDB */
return 0;
}
int ib_get_cached_lmc(struct ib_device *device,
u8 port_num,
u8 *lmc)
{
int ret = 0;
if (port_num < start_port(device) || port_num > end_port(device))
return -EINVAL;
mtx_lock(&device->cache.lock);
*lmc = device->cache.lmc_cache[port_num - start_port(device)];
mtx_unlock(&device->cache.lock);
return ret;
}
static void
console_write(struct console *co, const char *buf, unsigned int len)
{
if (!port)
return;
#ifdef CONFIG_SVINTO_SIM
/* no use to simulate the serial debug output */
SIMCOUT(buf, len);
return;
#endif
start_port();
#ifdef CONFIG_ETRAX_KGDB
/* kgdb needs to output debug info using the gdb protocol */
putDebugString(buf, len);
return;
#endif
if (debug_write_function)
debug_write_function(co->index, buf, len);
else
console_write_direct(co, buf, len);
}
int roce_sync_all_netdev_gids(struct ib_device *ib_dev, u8 port,
struct list_head *list)
{
struct ib_roce_gid_cache *cache;
int ix;
if (!ib_dev->cache.roce_gid_cache)
return 0;
cache = ib_dev->cache.roce_gid_cache[port - start_port(ib_dev)];
if (!cache || !cache->active)
return -ENOSYS;
mutex_lock(&cache->lock);
for (ix = 0; ix < cache->sz; ix++) {
bool found = false;
struct roce_netdev_list *entry;
list_for_each_entry(entry, list, list) {
if (cache->data_vec[ix].attr.ndev == entry->ndev) {
found = true;
break;
}
}
if (!found)
write_gid(ib_dev, port, cache, ix, &zgid, &zattr);
}
mutex_unlock(&cache->lock);
return 0;
}
int ib_get_cached_lmc(struct ib_device *device,
u8 port_num,
u8 *lmc)
{
unsigned long flags;
int ret = 0;
if (port_num < start_port(device) || port_num > end_port(device))
return -EINVAL;
read_lock_irqsave(&device->cache.lock, flags);
*lmc = device->cache.lmc_cache[port_num - start_port(device)];
read_unlock_irqrestore(&device->cache.lock, flags);
return ret;
}
int roce_del_gid(struct ib_device *ib_dev, u8 port,
union ib_gid *gid, struct ib_gid_attr *attr)
{
struct ib_roce_gid_cache *cache;
int ix;
if (!ib_dev->cache.roce_gid_cache)
return 0;
cache = ib_dev->cache.roce_gid_cache[port - start_port(ib_dev)];
if (!cache || !cache->active)
return -ENOSYS;
if (attr->ndev) {
/* Deleting default GIDs in not permitted */
if (rdma_is_default_gid(attr->ndev, gid,
roce_v1_noncompat_gid ? true : false))
return -EPERM;
}
mutex_lock(&cache->lock);
ix = find_gid(cache, gid, attr,
GID_ATTR_FIND_MASK_GID_TYPE |
GID_ATTR_FIND_MASK_NETDEV);
if (ix < 0)
goto out_unlock;
write_gid(ib_dev, port, cache, ix, &zgid, &zattr);
out_unlock:
mutex_unlock(&cache->lock);
return 0;
}
int ib_find_cached_pkey(struct ib_device *device,
u8 port_num,
u16 pkey,
u16 *index)
{
struct ib_pkey_cache *cache;
unsigned long flags;
int i;
int ret = -ENOENT;
int partial_ix = -1;
if (port_num < start_port(device) || port_num > end_port(device))
return -EINVAL;
*index = -1;
read_lock_irqsave(&device->cache.lock, flags);
if (!device->cache.pkey_cache)
goto out;
cache = device->cache.pkey_cache[port_num - start_port(device)];
if (!cache)
goto out;
for (i = 0; i < cache->table_len; ++i)
if ((cache->table[i] & 0x7fff) == (pkey & 0x7fff)) {
if (cache->table[i] & 0x8000) {
*index = i;
ret = 0;
break;
} else
partial_ix = i;
}
if (ret && partial_ix >= 0) {
*index = partial_ix;
ret = 0;
}
out:
read_unlock_irqrestore(&device->cache.lock, flags);
return ret;
}
static void ib_cache_setup_one(struct ib_device *device)
{
int p;
rwlock_init(&device->cache.lock);
device->cache.pkey_cache =
kmalloc(sizeof *device->cache.pkey_cache *
(end_port(device) - start_port(device) + 1), GFP_KERNEL);
device->cache.gid_cache =
kmalloc(sizeof *device->cache.pkey_cache *
(end_port(device) - start_port(device) + 1), GFP_KERNEL);
if (!device->cache.pkey_cache || !device->cache.gid_cache) {
printk(KERN_WARNING "Couldn't allocate cache "
"for %s\n", device->name);
goto err;
}
for (p = 0; p <= end_port(device) - start_port(device); ++p) {
device->cache.pkey_cache[p] = NULL;
device->cache.gid_cache [p] = NULL;
ib_cache_update(device, p + start_port(device));
}
INIT_IB_EVENT_HANDLER(&device->cache.event_handler,
device, ib_cache_event);
if (ib_register_event_handler(&device->cache.event_handler))
goto err_cache;
return;
err_cache:
for (p = 0; p <= end_port(device) - start_port(device); ++p) {
kfree(device->cache.pkey_cache[p]);
kfree(device->cache.gid_cache[p]);
}
err:
kfree(device->cache.pkey_cache);
kfree(device->cache.gid_cache);
}
int roce_add_gid(struct ib_device *ib_dev, u8 port,
union ib_gid *gid, struct ib_gid_attr *attr)
{
struct ib_roce_gid_cache *cache;
int ix;
int ret = 0;
struct net_device *idev;
if (!ib_dev->cache.roce_gid_cache)
return -ENOSYS;
cache = ib_dev->cache.roce_gid_cache[port - start_port(ib_dev)];
if (!cache || !cache->active)
return -ENOSYS;
if (!memcmp(gid, &zgid, sizeof(*gid)))
return -EINVAL;
if (ib_dev->get_netdev) {
rcu_read_lock();
idev = ib_dev->get_netdev(ib_dev, port);
if (idev && attr->ndev != idev)
/* Adding default GIDs in not permitted */
if (rdma_is_default_gid(idev, gid,
roce_v1_noncompat_gid ? true : false)) {
rcu_read_unlock();
return -EPERM;
}
rcu_read_unlock();
}
mutex_lock(&cache->lock);
ix = find_gid(cache, gid, attr, GID_ATTR_FIND_MASK_GID_TYPE |
GID_ATTR_FIND_MASK_NETDEV);
if (ix >= 0)
goto out_unlock;
ix = find_gid(cache, &zgid, NULL, 0);
if (ix < 0) {
ret = -ENOSPC;
goto out_unlock;
}
write_gid(ib_dev, port, cache, ix, gid, attr);
out_unlock:
mutex_unlock(&cache->lock);
return ret;
}
int ib_get_cached_gid(struct ib_device *device,
u8 port_num,
int index,
union ib_gid *gid)
{
struct ib_gid_cache *cache;
unsigned long flags;
int i, ret = 0;
if (port_num < start_port(device) || port_num > end_port(device))
return -EINVAL;
read_lock_irqsave(&device->cache.lock, flags);
cache = device->cache.gid_cache[port_num - start_port(device)];
if (index < 0 || index >= cache->table_len) {
ret = -EINVAL;
goto out_unlock;
}
for (i = 0; i < cache->table_len; ++i)
if (cache->entry[i].index == index)
break;
if (i < cache->table_len)
*gid = cache->entry[i].gid;
else {
ret = ib_query_gid(device, port_num, index, gid);
if (ret)
printk(KERN_WARNING "ib_query_gid failed (%d) for %s (index %d)\n",
ret, device->name, index);
}
out_unlock:
read_unlock_irqrestore(&device->cache.lock, flags);
return ret;
}
int __init
init_etrax_debug(void)
{
static int first = 1;
if (!first) {
unregister_console(&sercons);
register_console(&sercons0);
register_console(&sercons1);
register_console(&sercons2);
register_console(&sercons3);
init_dummy_console();
return 0;
}
first = 0;
register_console(&sercons);
start_port(port);
#ifdef CONFIG_ETRAX_KGDB
start_port(kgdb_port);
#endif
return 0;
}
static void ib_cache_cleanup_one(struct ib_device *device)
{
int p;
ib_unregister_event_handler(&device->cache.event_handler);
flush_scheduled_work();
for (p = 0; p <= end_port(device) - start_port(device); ++p) {
kfree(device->cache.pkey_cache[p]);
kfree(device->cache.gid_cache[p]);
}
kfree(device->cache.pkey_cache);
kfree(device->cache.gid_cache);
}
int ib_get_cached_gid(struct ib_device *device,
u8 port_num,
int index,
union ib_gid *gid)
{
struct ib_gid_cache *cache;
int ret = 0;
if (port_num < start_port(device) || port_num > end_port(device))
return -EINVAL;
mtx_lock(&device->cache.lock);
cache = device->cache.gid_cache[port_num - start_port(device)];
if (index < 0 || index >= cache->table_len)
ret = -EINVAL;
else
*gid = cache->table[index];
mtx_unlock(&device->cache.lock);
return ret;
}
int raw_printk(const char *fmt, ...)
{
static char buf[1024];
int printed_len;
static int first = 1;
if (first) {
/* Force reinitialization of the port to get manual mode. */
port->started = 0;
start_port(port);
first = 0;
}
va_list args;
va_start(args, fmt);
printed_len = vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
console_write_direct(NULL, buf, strlen(buf));
return printed_len;
}
static void ib_cache_cleanup_one(struct ib_device *device)
{
int p;
ib_unregister_event_handler(&device->cache.event_handler);
#ifdef XXX
flush_scheduled_work();
#endif
for (p = 0; p <= end_port(device) - start_port(device); ++p) {
free(device->cache.pkey_cache[p], M_DEVBUF);
free(device->cache.gid_cache[p], M_DEVBUF);
}
free(device->cache.pkey_cache, M_DEVBUF);
free(device->cache.gid_cache, M_DEVBUF);
free(device->cache.lmc_cache, M_DEVBUF);
}
static void ib_cache_setup_one(struct ib_device *device)
{
int p;
mtx_init(&device->cache.lock, "ib device cache", NULL,
MTX_DUPOK|MTX_DEF);
device->cache.pkey_cache =
malloc(sizeof *device->cache.pkey_cache *
(end_port(device) - start_port(device) + 1), M_DEVBUF,
M_NOWAIT);
device->cache.gid_cache =
malloc(sizeof *device->cache.gid_cache *
(end_port(device) - start_port(device) + 1), M_DEVBUF,
M_NOWAIT);
device->cache.lmc_cache = malloc(sizeof *device->cache.lmc_cache *
(end_port(device) -
start_port(device) + 1),
M_DEVBUF, M_NOWAIT);
if (!device->cache.pkey_cache || !device->cache.gid_cache ||
!device->cache.lmc_cache) {
log(LOG_WARNING, "Couldn't allocate cache "
"for %s\n", device->name);
goto err;
}
for (p = 0; p <= end_port(device) - start_port(device); ++p) {
device->cache.pkey_cache[p] = NULL;
device->cache.gid_cache [p] = NULL;
ib_cache_update(device, p + start_port(device));
}
INIT_IB_EVENT_HANDLER(&device->cache.event_handler,
device, ib_cache_event);
if (ib_register_event_handler(&device->cache.event_handler))
goto err_cache;
return;
err_cache:
for (p = 0; p <= end_port(device) - start_port(device); ++p) {
free(device->cache.pkey_cache[p], M_DEVBUF);
free(device->cache.gid_cache[p], M_DEVBUF);
}
err:
free(device->cache.pkey_cache, M_DEVBUF);
free(device->cache.gid_cache, M_DEVBUF);
free(device->cache.lmc_cache, M_DEVBUF);
}
static void ib_cache_cleanup_one(struct ib_device *device)
{
int p;
if (!(device->cache.pkey_cache && device->cache.gid_cache &&
device->cache.lmc_cache))
return;
ib_unregister_event_handler(&device->cache.event_handler);
flush_workqueue(ib_wq);
for (p = 0; p <= end_port(device) - start_port(device); ++p) {
kfree(device->cache.pkey_cache[p]);
kfree(device->cache.gid_cache[p]);
}
kfree(device->cache.pkey_cache);
kfree(device->cache.gid_cache);
kfree(device->cache.lmc_cache);
}
static int __init
console_setup(struct console *co, char *options)
{
char* s;
if (options) {
port = &ports[co->index];
port->baudrate = 115200;
port->parity = 'N';
port->bits = 8;
port->baudrate = simple_strtoul(options, NULL, 10);
s = options;
while(*s >= '0' && *s <= '9')
s++;
if (*s) port->parity = *s++;
if (*s) port->bits = *s++ - '0';
port->started = 0;
start_port(0);
}
return 0;
}
int roce_gid_cache_get_gid(struct ib_device *ib_dev, u8 port, int index,
union ib_gid *gid, struct ib_gid_attr *attr)
{
struct ib_roce_gid_cache *cache;
union ib_gid local_gid;
struct ib_gid_attr local_attr;
unsigned int orig_seq;
if (!ib_dev->cache.roce_gid_cache)
return -EINVAL;
cache = ib_dev->cache.roce_gid_cache[port - start_port(ib_dev)];
if (!cache || !cache->active)
return -ENOSYS;
if (index < 0 || index >= cache->sz)
return -EINVAL;
orig_seq = ACCESS_ONCE(cache->data_vec[index].seq);
/* Make sure we read the sequence number before copying the
* gid to local storage. */
smp_rmb();
memcpy(&local_gid, &cache->data_vec[index].gid, sizeof(local_gid));
memcpy(&local_attr, &cache->data_vec[index].attr, sizeof(local_attr));
/* Ensure the local copy completed reading before verifying
* the new sequence number. */
smp_rmb();
if (orig_seq == -1 ||
orig_seq != ACCESS_ONCE(cache->data_vec[index].seq))
return -EAGAIN;
memcpy(gid, &local_gid, sizeof(*gid));
if (attr)
memcpy(attr, &local_attr, sizeof(*attr));
return 0;
}
static int roce_gid_cache_setup_one(struct ib_device *ib_dev)
{
u8 port;
int err = 0;
if (!ib_dev->modify_gid)
return -ENOSYS;
ib_dev->cache.roce_gid_cache =
kcalloc(ib_dev->phys_port_cnt,
sizeof(*ib_dev->cache.roce_gid_cache), GFP_KERNEL);
if (!ib_dev->cache.roce_gid_cache) {
pr_warn("failed to allocate roce addr cache for %s\n",
ib_dev->name);
return -ENOMEM;
}
for (port = 0; port < ib_dev->phys_port_cnt; port++) {
if (rdma_port_get_link_layer(ib_dev, port + start_port(ib_dev))
!= IB_LINK_LAYER_ETHERNET)
continue;
ib_dev->cache.roce_gid_cache[port] =
alloc_roce_gid_cache(ib_dev->gid_tbl_len[port]);
if (!ib_dev->cache.roce_gid_cache[port]) {
err = -ENOMEM;
goto rollback_cache_setup;
}
}
return 0;
rollback_cache_setup:
for (port = 1; port <= ib_dev->phys_port_cnt; port++)
free_roce_gid_cache(ib_dev, port);
kfree(ib_dev->cache.roce_gid_cache);
ib_dev->cache.roce_gid_cache = NULL;
return err;
}
int roce_del_all_netdev_gids(struct ib_device *ib_dev, u8 port,
struct net_device *ndev)
{
struct ib_roce_gid_cache *cache;
int ix;
if (!ib_dev->cache.roce_gid_cache)
return 0;
cache = ib_dev->cache.roce_gid_cache[port - start_port(ib_dev)];
if (!cache || !cache->active)
return -ENOSYS;
mutex_lock(&cache->lock);
for (ix = 0; ix < cache->sz; ix++)
if (cache->data_vec[ix].attr.ndev == ndev)
write_gid(ib_dev, port, cache, ix, &zgid, &zattr);
mutex_unlock(&cache->lock);
return 0;
}
