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[RAPIDIO] Auto-probe the RapidIO system size
The RapidIO system size will auto probe in RIO setup. The route table and rionet_active in rionet.c are changed to be allocated dynamically according to the size of the system. Signed-off-by: Zhang Wei <wei.zhang@freescale.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Zhang Wei
Paul Mackerras
parent
cc2bb6968a
commit
e042323607
8 changed files with 71 additions and 42 deletions
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@ -1007,6 +1007,12 @@ int fsl_rio_setup(struct of_device *dev)
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rio_register_mport(port);
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priv->regs_win = ioremap(regs.start, regs.end - regs.start + 1);
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port->sys_size = (in_be32((priv->regs_win + RIO_PEF_CAR))
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& RIO_PEF_CTLS) >> 4;
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dev_info(&dev->dev, "RapidIO Common Transport System size: %d\n",
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port->sys_size ? 65536 : 256);
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priv->atmu_regs = (struct rio_atmu_regs *)(priv->regs_win
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+ RIO_ATMU_REGS_OFFSET);
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priv->maint_atmu_regs = priv->atmu_regs + 1;
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@ -77,7 +77,7 @@ static int rionet_capable = 1;
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* could be made into a hash table to save memory depending
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* on system trade-offs.
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*/
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static struct rio_dev *rionet_active[RIO_MAX_ROUTE_ENTRIES];
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static struct rio_dev **rionet_active;
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#define is_rionet_capable(pef, src_ops, dst_ops) \
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((pef & RIO_PEF_INB_MBOX) && \
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@ -195,7 +195,8 @@ static int rionet_start_xmit(struct sk_buff *skb, struct net_device *ndev)
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}
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if (eth->h_dest[0] & 0x01) {
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for (i = 0; i < RIO_MAX_ROUTE_ENTRIES; i++)
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for (i = 0; i < RIO_MAX_ROUTE_ENTRIES(rnet->mport->sys_size);
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i++)
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if (rionet_active[i])
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rionet_queue_tx_msg(skb, ndev,
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rionet_active[i]);
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@ -385,6 +386,8 @@ static void rionet_remove(struct rio_dev *rdev)
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struct net_device *ndev = NULL;
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struct rionet_peer *peer, *tmp;
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free_pages((unsigned long)rionet_active, rdev->net->hport->sys_size ?
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__ilog2(sizeof(void *)) + 4 : 0);
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unregister_netdev(ndev);
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kfree(ndev);
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@ -443,6 +446,15 @@ static int rionet_setup_netdev(struct rio_mport *mport)
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goto out;
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}
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rionet_active = (struct rio_dev **)__get_free_pages(GFP_KERNEL,
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mport->sys_size ? __ilog2(sizeof(void *)) + 4 : 0);
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if (!rionet_active) {
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rc = -ENOMEM;
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goto out;
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}
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memset((void *)rionet_active, 0, sizeof(void *) *
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RIO_MAX_ROUTE_ENTRIES(mport->sys_size));
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/* Set up private area */
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rnet = (struct rionet_private *)ndev->priv;
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rnet->mport = mport;
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@ -1,14 +1,6 @@
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#
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# RapidIO configuration
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#
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config RAPIDIO_8_BIT_TRANSPORT
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bool "8-bit transport addressing"
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depends on RAPIDIO
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---help---
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By default, the kernel assumes a 16-bit addressed RapidIO
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network. By selecting this option, the kernel will support
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an 8-bit addressed network.
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config RAPIDIO_DISC_TIMEOUT
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int "Discovery timeout duration (seconds)"
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depends on RAPIDIO
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@ -73,7 +73,7 @@ static u16 rio_get_device_id(struct rio_mport *port, u16 destid, u8 hopcount)
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rio_mport_read_config_32(port, destid, hopcount, RIO_DID_CSR, &result);
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return RIO_GET_DID(result);
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return RIO_GET_DID(port->sys_size, result);
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}
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/**
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@ -88,7 +88,7 @@ static u16 rio_get_device_id(struct rio_mport *port, u16 destid, u8 hopcount)
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static void rio_set_device_id(struct rio_mport *port, u16 destid, u8 hopcount, u16 did)
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{
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rio_mport_write_config_32(port, destid, hopcount, RIO_DID_CSR,
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RIO_SET_DID(did));
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RIO_SET_DID(port->sys_size, did));
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}
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/**
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@ -100,7 +100,8 @@ static void rio_set_device_id(struct rio_mport *port, u16 destid, u8 hopcount, u
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*/
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static void rio_local_set_device_id(struct rio_mport *port, u16 did)
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{
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rio_local_write_config_32(port, RIO_DID_CSR, RIO_SET_DID(did));
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rio_local_write_config_32(port, RIO_DID_CSR, RIO_SET_DID(port->sys_size,
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did));
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}
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/**
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@ -350,8 +351,18 @@ static struct rio_dev *rio_setup_device(struct rio_net *net,
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rswitch->switchid = next_switchid;
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rswitch->hopcount = hopcount;
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rswitch->destid = destid;
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rswitch->route_table = kzalloc(sizeof(u8)*
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RIO_MAX_ROUTE_ENTRIES(port->sys_size),
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GFP_KERNEL);
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if (!rswitch->route_table) {
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kfree(rdev);
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rdev = NULL;
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kfree(rswitch);
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goto out;
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}
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/* Initialize switch route table */
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for (rdid = 0; rdid < RIO_MAX_ROUTE_ENTRIES; rdid++)
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for (rdid = 0; rdid < RIO_MAX_ROUTE_ENTRIES(port->sys_size);
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rdid++)
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rswitch->route_table[rdid] = RIO_INVALID_ROUTE;
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rdev->rswitch = rswitch;
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sprintf(rio_name(rdev), "%02x:s:%04x", rdev->net->id,
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@ -480,7 +491,7 @@ static u16 rio_get_host_deviceid_lock(struct rio_mport *port, u8 hopcount)
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{
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u32 result;
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rio_mport_read_config_32(port, RIO_ANY_DESTID, hopcount,
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rio_mport_read_config_32(port, RIO_ANY_DESTID(port->sys_size), hopcount,
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RIO_HOST_DID_LOCK_CSR, &result);
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return (u16) (result & 0xffff);
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@ -571,14 +582,16 @@ static int rio_enum_peer(struct rio_net *net, struct rio_mport *port,
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}
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/* Attempt to acquire device lock */
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rio_mport_write_config_32(port, RIO_ANY_DESTID, hopcount,
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rio_mport_write_config_32(port, RIO_ANY_DESTID(port->sys_size),
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hopcount,
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RIO_HOST_DID_LOCK_CSR, port->host_deviceid);
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while ((tmp = rio_get_host_deviceid_lock(port, hopcount))
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< port->host_deviceid) {
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/* Delay a bit */
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mdelay(1);
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/* Attempt to acquire device lock again */
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rio_mport_write_config_32(port, RIO_ANY_DESTID, hopcount,
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rio_mport_write_config_32(port, RIO_ANY_DESTID(port->sys_size),
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hopcount,
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RIO_HOST_DID_LOCK_CSR,
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port->host_deviceid);
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}
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@ -590,7 +603,9 @@ static int rio_enum_peer(struct rio_net *net, struct rio_mport *port,
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}
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/* Setup new RIO device */
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if ((rdev = rio_setup_device(net, port, RIO_ANY_DESTID, hopcount, 1))) {
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rdev = rio_setup_device(net, port, RIO_ANY_DESTID(port->sys_size),
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hopcount, 1);
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if (rdev) {
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/* Add device to the global and bus/net specific list. */
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list_add_tail(&rdev->net_list, &net->devices);
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} else
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@ -598,7 +613,8 @@ static int rio_enum_peer(struct rio_net *net, struct rio_mport *port,
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if (rio_is_switch(rdev)) {
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next_switchid++;
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sw_inport = rio_get_swpinfo_inport(port, RIO_ANY_DESTID, hopcount);
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sw_inport = rio_get_swpinfo_inport(port,
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RIO_ANY_DESTID(port->sys_size), hopcount);
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rio_route_add_entry(port, rdev->rswitch, RIO_GLOBAL_TABLE,
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port->host_deviceid, sw_inport);
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rdev->rswitch->route_table[port->host_deviceid] = sw_inport;
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@ -612,7 +628,8 @@ static int rio_enum_peer(struct rio_net *net, struct rio_mport *port,
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}
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num_ports =
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rio_get_swpinfo_tports(port, RIO_ANY_DESTID, hopcount);
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rio_get_swpinfo_tports(port, RIO_ANY_DESTID(port->sys_size),
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hopcount);
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pr_debug(
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"RIO: found %s (vid %4.4x did %4.4x) with %d ports\n",
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rio_name(rdev), rdev->vid, rdev->did, num_ports);
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@ -624,13 +641,15 @@ static int rio_enum_peer(struct rio_net *net, struct rio_mport *port,
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cur_destid = next_destid;
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if (rio_sport_is_active
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(port, RIO_ANY_DESTID, hopcount, port_num)) {
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(port, RIO_ANY_DESTID(port->sys_size), hopcount,
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port_num)) {
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pr_debug(
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"RIO: scanning device on port %d\n",
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port_num);
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rio_route_add_entry(port, rdev->rswitch,
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RIO_GLOBAL_TABLE,
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RIO_ANY_DESTID, port_num);
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RIO_GLOBAL_TABLE,
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RIO_ANY_DESTID(port->sys_size),
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port_num);
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if (rio_enum_peer(net, port, hopcount + 1) < 0)
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return -1;
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@ -735,7 +754,8 @@ rio_disc_peer(struct rio_net *net, struct rio_mport *port, u16 destid,
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pr_debug(
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"RIO: scanning device on port %d\n",
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port_num);
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for (ndestid = 0; ndestid < RIO_ANY_DESTID;
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for (ndestid = 0;
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ndestid < RIO_ANY_DESTID(port->sys_size);
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ndestid++) {
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rio_route_get_entry(port, rdev->rswitch,
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RIO_GLOBAL_TABLE,
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@ -917,7 +937,9 @@ static void rio_build_route_tables(void)
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list_for_each_entry(rdev, &rio_devices, global_list)
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if (rio_is_switch(rdev))
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for (i = 0; i < RIO_MAX_ROUTE_ENTRIES; i++) {
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for (i = 0;
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i < RIO_MAX_ROUTE_ENTRIES(rdev->net->hport->sys_size);
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i++) {
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if (rio_route_get_entry
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(rdev->net->hport, rdev->rswitch, RIO_GLOBAL_TABLE,
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i, &sport) < 0)
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@ -981,7 +1003,8 @@ int rio_disc_mport(struct rio_mport *mport)
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del_timer_sync(&rio_enum_timer);
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pr_debug("done\n");
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if (rio_disc_peer(net, mport, RIO_ANY_DESTID, 0) < 0) {
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if (rio_disc_peer(net, mport, RIO_ANY_DESTID(mport->sys_size),
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0) < 0) {
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printk(KERN_INFO
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"RIO: master port %d device has failed discovery\n",
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mport->id);
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@ -43,7 +43,8 @@ static ssize_t routes_show(struct device *dev, struct device_attribute *attr, ch
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if (!rdev->rswitch)
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goto out;
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for (i = 0; i < RIO_MAX_ROUTE_ENTRIES; i++) {
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for (i = 0; i < RIO_MAX_ROUTE_ENTRIES(rdev->net->hport->sys_size);
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i++) {
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if (rdev->rswitch->route_table[i] == RIO_INVALID_ROUTE)
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continue;
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str +=
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@ -43,7 +43,7 @@ u16 rio_local_get_device_id(struct rio_mport *port)
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rio_local_read_config_32(port, RIO_DID_CSR, &result);
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return (RIO_GET_DID(result));
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return (RIO_GET_DID(port->sys_size, result));
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}
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/**
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@ -51,10 +51,5 @@ extern struct rio_route_ops __end_rio_route_ops[];
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DECLARE_RIO_ROUTE_SECTION(.rio_route_ops, \
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vid, did, add_hook, get_hook)
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#ifdef CONFIG_RAPIDIO_8_BIT_TRANSPORT
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#define RIO_GET_DID(x) ((x & 0x00ff0000) >> 16)
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#define RIO_SET_DID(x) ((x & 0x000000ff) << 16)
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#else
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#define RIO_GET_DID(x) (x & 0xffff)
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#define RIO_SET_DID(x) (x & 0xffff)
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#endif
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#define RIO_GET_DID(size, x) (size ? (x & 0xffff) : ((x & 0x00ff0000) >> 16))
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#define RIO_SET_DID(size, x) (size ? (x & 0xffff) : ((x & 0x000000ff) << 16))
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@ -23,7 +23,6 @@
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#include <linux/device.h>
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#include <linux/rio_regs.h>
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#define RIO_ANY_DESTID 0xff
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#define RIO_NO_HOPCOUNT -1
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#define RIO_INVALID_DESTID 0xffff
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@ -39,11 +38,8 @@
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entry is invalid (no route
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exists for the device ID) */
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#ifdef CONFIG_RAPIDIO_8_BIT_TRANSPORT
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#define RIO_MAX_ROUTE_ENTRIES (1 << 8)
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#else
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#define RIO_MAX_ROUTE_ENTRIES (1 << 16)
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#endif
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#define RIO_MAX_ROUTE_ENTRIES(size) (size ? (1 << 16) : (1 << 8))
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#define RIO_ANY_DESTID(size) (size ? 0xffff : 0xff)
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#define RIO_MAX_MBOX 4
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#define RIO_MAX_MSG_SIZE 0x1000
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@ -178,6 +174,10 @@ struct rio_mport {
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unsigned char id; /* port ID, unique among all ports */
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unsigned char index; /* port index, unique among all port
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interfaces of the same type */
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unsigned int sys_size; /* RapidIO common transport system size.
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* 0 - Small size. 256 devices.
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* 1 - Large size, 65536 devices.
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*/
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unsigned char name[40];
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void *priv; /* Master port private data */
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};
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@ -213,7 +213,7 @@ struct rio_switch {
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u16 switchid;
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u16 hopcount;
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u16 destid;
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u8 route_table[RIO_MAX_ROUTE_ENTRIES];
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u8 *route_table;
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int (*add_entry) (struct rio_mport * mport, u16 destid, u8 hopcount,
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u16 table, u16 route_destid, u8 route_port);
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int (*get_entry) (struct rio_mport * mport, u16 destid, u8 hopcount,
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