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path: root/drivers/rapidio/rio-scan.c
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Diffstat (limited to 'drivers/rapidio/rio-scan.c')
-rw-r--r--drivers/rapidio/rio-scan.c135
1 files changed, 65 insertions, 70 deletions
diff --git a/drivers/rapidio/rio-scan.c b/drivers/rapidio/rio-scan.c
index d6a126c17c03..a63a380809d1 100644
--- a/drivers/rapidio/rio-scan.c
+++ b/drivers/rapidio/rio-scan.c
@@ -39,6 +39,13 @@
static void rio_init_em(struct rio_dev *rdev);
+struct rio_id_table {
+ u16 start; /* logical minimal id */
+ u32 max; /* max number of IDs in table */
+ spinlock_t lock;
+ unsigned long table[0];
+};
+
static int next_destid = 0;
static int next_comptag = 1;
@@ -62,7 +69,7 @@ static int rio_mport_phys_table[] = {
static u16 rio_destid_alloc(struct rio_net *net)
{
int destid;
- struct rio_id_table *idtab = &net->destid_table;
+ struct rio_id_table *idtab = (struct rio_id_table *)net->enum_data;
spin_lock(&idtab->lock);
destid = find_first_zero_bit(idtab->table, idtab->max);
@@ -88,7 +95,7 @@ static u16 rio_destid_alloc(struct rio_net *net)
static int rio_destid_reserve(struct rio_net *net, u16 destid)
{
int oldbit;
- struct rio_id_table *idtab = &net->destid_table;
+ struct rio_id_table *idtab = (struct rio_id_table *)net->enum_data;
destid -= idtab->start;
spin_lock(&idtab->lock);
@@ -106,7 +113,7 @@ static int rio_destid_reserve(struct rio_net *net, u16 destid)
*/
static void rio_destid_free(struct rio_net *net, u16 destid)
{
- struct rio_id_table *idtab = &net->destid_table;
+ struct rio_id_table *idtab = (struct rio_id_table *)net->enum_data;
destid -= idtab->start;
spin_lock(&idtab->lock);
@@ -121,7 +128,7 @@ static void rio_destid_free(struct rio_net *net, u16 destid)
static u16 rio_destid_first(struct rio_net *net)
{
int destid;
- struct rio_id_table *idtab = &net->destid_table;
+ struct rio_id_table *idtab = (struct rio_id_table *)net->enum_data;
spin_lock(&idtab->lock);
destid = find_first_bit(idtab->table, idtab->max);
@@ -141,7 +148,7 @@ static u16 rio_destid_first(struct rio_net *net)
static u16 rio_destid_next(struct rio_net *net, u16 from)
{
int destid;
- struct rio_id_table *idtab = &net->destid_table;
+ struct rio_id_table *idtab = (struct rio_id_table *)net->enum_data;
spin_lock(&idtab->lock);
destid = find_next_bit(idtab->table, idtab->max, from);
@@ -187,19 +194,6 @@ static void rio_set_device_id(struct rio_mport *port, u16 destid, u8 hopcount, u
}
/**
- * rio_local_set_device_id - Set the base/extended device id for a port
- * @port: RIO master port
- * @did: Device ID value to be written
- *
- * Writes the base/extended device id from a device.
- */
-static void rio_local_set_device_id(struct rio_mport *port, u16 did)
-{
- rio_local_write_config_32(port, RIO_DID_CSR, RIO_SET_DID(port->sys_size,
- did));
-}
-
-/**
* rio_clear_locks- Release all host locks and signal enumeration complete
* @net: RIO network to run on
*
@@ -449,9 +443,6 @@ static struct rio_dev *rio_setup_device(struct rio_net *net,
if (do_enum)
rio_route_clr_table(rdev, RIO_GLOBAL_TABLE, 0);
-
- list_add_tail(&rswitch->node, &net->switches);
-
} else {
if (do_enum)
/*Enable Input Output Port (transmitter reviever)*/
@@ -461,13 +452,9 @@ static struct rio_dev *rio_setup_device(struct rio_net *net,
rdev->comp_tag & RIO_CTAG_UDEVID);
}
- rdev->dev.parent = &port->dev;
+ rdev->dev.parent = &net->dev;
rio_attach_device(rdev);
-
- device_initialize(&rdev->dev);
rdev->dev.release = rio_release_dev;
- rio_dev_get(rdev);
-
rdev->dma_mask = DMA_BIT_MASK(32);
rdev->dev.dma_mask = &rdev->dma_mask;
rdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
@@ -480,6 +467,8 @@ static struct rio_dev *rio_setup_device(struct rio_net *net,
if (ret)
goto cleanup;
+ rio_dev_get(rdev);
+
return rdev;
cleanup:
@@ -621,8 +610,6 @@ static int rio_enum_peer(struct rio_net *net, struct rio_mport *port,
rdev = rio_setup_device(net, port, RIO_ANY_DESTID(port->sys_size),
hopcount, 1);
if (rdev) {
- /* Add device to the global and bus/net specific list. */
- list_add_tail(&rdev->net_list, &net->devices);
rdev->prev = prev;
if (prev && rio_is_switch(prev))
prev->rswitch->nextdev[prev_port] = rdev;
@@ -778,8 +765,6 @@ rio_disc_peer(struct rio_net *net, struct rio_mport *port, u16 destid,
/* Setup new RIO device */
if ((rdev = rio_setup_device(net, port, destid, hopcount, 0))) {
- /* Add device to the global and bus/net specific list. */
- list_add_tail(&rdev->net_list, &net->devices);
rdev->prev = prev;
if (prev && rio_is_switch(prev))
prev->rswitch->nextdev[prev_port] = rdev;
@@ -864,50 +849,71 @@ static int rio_mport_is_active(struct rio_mport *port)
return result & RIO_PORT_N_ERR_STS_PORT_OK;
}
-/**
- * rio_alloc_net- Allocate and configure a new RIO network
- * @port: Master port associated with the RIO network
+static void rio_scan_release_net(struct rio_net *net)
+{
+ pr_debug("RIO-SCAN: %s: net_%d\n", __func__, net->id);
+ kfree(net->enum_data);
+}
+
+static void rio_scan_release_dev(struct device *dev)
+{
+ struct rio_net *net;
+
+ net = to_rio_net(dev);
+ pr_debug("RIO-SCAN: %s: net_%d\n", __func__, net->id);
+ kfree(net);
+}
+
+/*
+ * rio_scan_alloc_net - Allocate and configure a new RIO network
+ * @mport: Master port associated with the RIO network
* @do_enum: Enumeration/Discovery mode flag
* @start: logical minimal start id for new net
*
- * Allocates a RIO network structure, initializes per-network
- * list heads, and adds the associated master port to the
- * network list of associated master ports. Returns a
- * RIO network pointer on success or %NULL on failure.
+ * Allocates a new RIO network structure and initializes enumerator-specific
+ * part of it (if required).
+ * Returns a RIO network pointer on success or %NULL on failure.
*/
-static struct rio_net *rio_alloc_net(struct rio_mport *port,
- int do_enum, u16 start)
+static struct rio_net *rio_scan_alloc_net(struct rio_mport *mport,
+ int do_enum, u16 start)
{
struct rio_net *net;
- net = kzalloc(sizeof(struct rio_net), GFP_KERNEL);
+ net = rio_alloc_net(mport);
+
if (net && do_enum) {
- net->destid_table.table = kcalloc(
- BITS_TO_LONGS(RIO_MAX_ROUTE_ENTRIES(port->sys_size)),
- sizeof(long),
- GFP_KERNEL);
+ struct rio_id_table *idtab;
+ size_t size;
+
+ size = sizeof(struct rio_id_table) +
+ BITS_TO_LONGS(
+ RIO_MAX_ROUTE_ENTRIES(mport->sys_size)
+ ) * sizeof(long);
+
+ idtab = kzalloc(size, GFP_KERNEL);
- if (net->destid_table.table == NULL) {
+ if (idtab == NULL) {
pr_err("RIO: failed to allocate destID table\n");
- kfree(net);
+ rio_free_net(net);
net = NULL;
} else {
- net->destid_table.start = start;
- net->destid_table.max =
- RIO_MAX_ROUTE_ENTRIES(port->sys_size);
- spin_lock_init(&net->destid_table.lock);
+ net->enum_data = idtab;
+ net->release = rio_scan_release_net;
+ idtab->start = start;
+ idtab->max = RIO_MAX_ROUTE_ENTRIES(mport->sys_size);
+ spin_lock_init(&idtab->lock);
}
}
if (net) {
- INIT_LIST_HEAD(&net->node);
- INIT_LIST_HEAD(&net->devices);
- INIT_LIST_HEAD(&net->switches);
- INIT_LIST_HEAD(&net->mports);
- list_add_tail(&port->nnode, &net->mports);
- net->hport = port;
- net->id = port->id;
+ net->id = mport->id;
+ net->hport = mport;
+ dev_set_name(&net->dev, "rnet_%d", net->id);
+ net->dev.parent = &mport->dev;
+ net->dev.release = rio_scan_release_dev;
+ rio_add_net(net);
}
+
return net;
}
@@ -968,17 +974,6 @@ static void rio_init_em(struct rio_dev *rdev)
}
/**
- * rio_pw_enable - Enables/disables port-write handling by a master port
- * @port: Master port associated with port-write handling
- * @enable: 1=enable, 0=disable
- */
-static void rio_pw_enable(struct rio_mport *port, int enable)
-{
- if (port->ops->pwenable)
- port->ops->pwenable(port, enable);
-}
-
-/**
* rio_enum_mport- Start enumeration through a master port
* @mport: Master port to send transactions
* @flags: Enumeration control flags
@@ -1016,7 +1011,7 @@ static int rio_enum_mport(struct rio_mport *mport, u32 flags)
/* If master port has an active link, allocate net and enum peers */
if (rio_mport_is_active(mport)) {
- net = rio_alloc_net(mport, 1, 0);
+ net = rio_scan_alloc_net(mport, 1, 0);
if (!net) {
printk(KERN_ERR "RIO: failed to allocate new net\n");
rc = -ENOMEM;
@@ -1133,7 +1128,7 @@ static int rio_disc_mport(struct rio_mport *mport, u32 flags)
enum_done:
pr_debug("RIO: ... enumeration done\n");
- net = rio_alloc_net(mport, 0, 0);
+ net = rio_scan_alloc_net(mport, 0, 0);
if (!net) {
printk(KERN_ERR "RIO: Failed to allocate new net\n");
goto bail;
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-01 09:54:24 +0000