rapidio: add relation links between RIO device structures
Create back and forward links between RIO devices. These links are intended for use by error management and hot-plug extensions. Links for redundant RIO connections between switches are not set (will be fixed in a separate patch). Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Thomas Moll <thomas.moll@sysgo.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Micha Nelissen <micha@neli.hopto.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alexandre Bounine
Linus Torvalds
Родитель
ae05cbd5ad
Коммит
68fe4df5d2
|
|
@ -444,7 +444,10 @@ static struct rio_dev __devinit *rio_setup_device(struct rio_net *net,
|
|||
|
||||
/* If a PE has both switch and other functions, show it as a switch */
|
||||
if (rio_is_switch(rdev)) {
|
||||
rswitch = kzalloc(sizeof(struct rio_switch), GFP_KERNEL);
|
||||
rswitch = kzalloc(sizeof(*rswitch) +
|
||||
RIO_GET_TOTAL_PORTS(rdev->swpinfo) *
|
||||
sizeof(rswitch->nextdev[0]),
|
||||
GFP_KERNEL);
|
||||
if (!rswitch)
|
||||
goto cleanup;
|
||||
rswitch->switchid = next_switchid;
|
||||
|
|
@ -722,25 +725,6 @@ static u16 rio_get_host_deviceid_lock(struct rio_mport *port, u8 hopcount)
|
|||
return (u16) (result & 0xffff);
|
||||
}
|
||||
|
||||
/**
|
||||
* rio_get_swpinfo_tports- Gets total number of ports on the switch
|
||||
* @mport: Master port to send transaction
|
||||
* @destid: Destination ID associated with the switch
|
||||
* @hopcount: Number of hops to the device
|
||||
*
|
||||
* Returns total numbers of ports implemented by the switch device.
|
||||
*/
|
||||
static u8 rio_get_swpinfo_tports(struct rio_mport *mport, u16 destid,
|
||||
u8 hopcount)
|
||||
{
|
||||
u32 result;
|
||||
|
||||
rio_mport_read_config_32(mport, destid, hopcount, RIO_SWP_INFO_CAR,
|
||||
&result);
|
||||
|
||||
return RIO_GET_TOTAL_PORTS(result);
|
||||
}
|
||||
|
||||
/**
|
||||
* rio_net_add_mport- Add a master port to a RIO network
|
||||
* @net: RIO network
|
||||
|
|
@ -761,15 +745,16 @@ static void rio_net_add_mport(struct rio_net *net, struct rio_mport *port)
|
|||
* @net: RIO network being enumerated
|
||||
* @port: Master port to send transactions
|
||||
* @hopcount: Number of hops into the network
|
||||
* @prev: Previous RIO device connected to the enumerated one
|
||||
* @prev_port: Port on previous RIO device
|
||||
*
|
||||
* Recursively enumerates a RIO network. Transactions are sent via the
|
||||
* master port passed in @port.
|
||||
*/
|
||||
static int __devinit rio_enum_peer(struct rio_net *net, struct rio_mport *port,
|
||||
u8 hopcount)
|
||||
u8 hopcount, struct rio_dev *prev, int prev_port)
|
||||
{
|
||||
int port_num;
|
||||
int num_ports;
|
||||
int cur_destid;
|
||||
int sw_destid;
|
||||
int sw_inport;
|
||||
|
|
@ -814,6 +799,9 @@ static int __devinit rio_enum_peer(struct rio_net *net, struct rio_mport *port,
|
|||
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;
|
||||
} else
|
||||
return -1;
|
||||
|
||||
|
|
@ -832,14 +820,14 @@ static int __devinit rio_enum_peer(struct rio_net *net, struct rio_mport *port,
|
|||
rdev->rswitch->route_table[destid] = sw_inport;
|
||||
}
|
||||
|
||||
num_ports =
|
||||
rio_get_swpinfo_tports(port, RIO_ANY_DESTID(port->sys_size),
|
||||
hopcount);
|
||||
pr_debug(
|
||||
"RIO: found %s (vid %4.4x did %4.4x) with %d ports\n",
|
||||
rio_name(rdev), rdev->vid, rdev->did, num_ports);
|
||||
rio_name(rdev), rdev->vid, rdev->did,
|
||||
RIO_GET_TOTAL_PORTS(rdev->swpinfo));
|
||||
sw_destid = next_destid;
|
||||
for (port_num = 0; port_num < num_ports; port_num++) {
|
||||
for (port_num = 0;
|
||||
port_num < RIO_GET_TOTAL_PORTS(rdev->swpinfo);
|
||||
port_num++) {
|
||||
/*Enable Input Output Port (transmitter reviever)*/
|
||||
rio_enable_rx_tx_port(port, 0,
|
||||
RIO_ANY_DESTID(port->sys_size),
|
||||
|
|
@ -864,7 +852,8 @@ static int __devinit rio_enum_peer(struct rio_net *net, struct rio_mport *port,
|
|||
RIO_ANY_DESTID(port->sys_size),
|
||||
port_num, 0);
|
||||
|
||||
if (rio_enum_peer(net, port, hopcount + 1) < 0)
|
||||
if (rio_enum_peer(net, port, hopcount + 1,
|
||||
rdev, port_num) < 0)
|
||||
return -1;
|
||||
|
||||
/* Update routing tables */
|
||||
|
|
@ -951,7 +940,6 @@ rio_disc_peer(struct rio_net *net, struct rio_mport *port, u16 destid,
|
|||
u8 hopcount)
|
||||
{
|
||||
u8 port_num, route_port;
|
||||
int num_ports;
|
||||
struct rio_dev *rdev;
|
||||
u16 ndestid;
|
||||
|
||||
|
|
@ -968,11 +956,13 @@ rio_disc_peer(struct rio_net *net, struct rio_mport *port, u16 destid,
|
|||
/* Associated destid is how we accessed this switch */
|
||||
rdev->rswitch->destid = destid;
|
||||
|
||||
num_ports = rio_get_swpinfo_tports(port, destid, hopcount);
|
||||
pr_debug(
|
||||
"RIO: found %s (vid %4.4x did %4.4x) with %d ports\n",
|
||||
rio_name(rdev), rdev->vid, rdev->did, num_ports);
|
||||
for (port_num = 0; port_num < num_ports; port_num++) {
|
||||
rio_name(rdev), rdev->vid, rdev->did,
|
||||
RIO_GET_TOTAL_PORTS(rdev->swpinfo));
|
||||
for (port_num = 0;
|
||||
port_num < RIO_GET_TOTAL_PORTS(rdev->swpinfo);
|
||||
port_num++) {
|
||||
if (RIO_GET_PORT_NUM(rdev->swpinfo) == port_num)
|
||||
continue;
|
||||
|
||||
|
|
@ -1167,7 +1157,7 @@ int __devinit rio_enum_mport(struct rio_mport *mport)
|
|||
/* Enable Input Output Port (transmitter reviever) */
|
||||
rio_enable_rx_tx_port(mport, 1, 0, 0, 0);
|
||||
|
||||
if (rio_enum_peer(net, mport, 0) < 0) {
|
||||
if (rio_enum_peer(net, mport, 0, NULL, 0) < 0) {
|
||||
/* A higher priority host won enumeration, bail. */
|
||||
printk(KERN_INFO
|
||||
"RIO: master port %d device has lost enumeration to a remote host\n",
|
||||
|
|
|
|||
|
|
@ -99,6 +99,7 @@ union rio_pw_msg;
|
|||
* @riores: RIO resources this device owns
|
||||
* @pwcback: port-write callback function for this device
|
||||
* @destid: Network destination ID
|
||||
* @prev: Previous RIO device connected to the current one
|
||||
*/
|
||||
struct rio_dev {
|
||||
struct list_head global_list; /* node in list of all RIO devices */
|
||||
|
|
@ -125,6 +126,7 @@ struct rio_dev {
|
|||
struct resource riores[RIO_MAX_DEV_RESOURCES];
|
||||
int (*pwcback) (struct rio_dev *rdev, union rio_pw_msg *msg, int step);
|
||||
u16 destid;
|
||||
struct rio_dev *prev;
|
||||
};
|
||||
|
||||
#define rio_dev_g(n) list_entry(n, struct rio_dev, global_list)
|
||||
|
|
@ -232,6 +234,7 @@ struct rio_net {
|
|||
* @get_domain: Callback for switch-specific domain get function
|
||||
* @em_init: Callback for switch-specific error management initialization function
|
||||
* @em_handle: Callback for switch-specific error management handler function
|
||||
* @nextdev: Array of per-port pointers to the next attached device
|
||||
*/
|
||||
struct rio_switch {
|
||||
struct list_head node;
|
||||
|
|
@ -253,6 +256,7 @@ struct rio_switch {
|
|||
u8 *sw_domain);
|
||||
int (*em_init) (struct rio_dev *dev);
|
||||
int (*em_handle) (struct rio_dev *dev, u8 swport);
|
||||
struct rio_dev *nextdev[0];
|
||||
};
|
||||
|
||||
/* Low-level architecture-dependent routines */
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче