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net: dsa: Make most functions take a dsa_port argument

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In preparation for allowing platform data, and therefore no valid
device_node pointer, make most DSA functions takes a pointer to a
dsa_port structure whenever possible. While at it, introduce a
dsa_port_is_valid() helper function which checks whether port->dn is
NULL or not at the moment.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2017-01-26 10:45:52 -08:00 committed by David S. Miller
parent 55ed0ce089
commit 293784a8f8
3 changed files with 44 additions and 36 deletions
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15
net/dsa/dsa.c
View File

@ -110,8 +110,9 @@ dsa_switch_probe(struct device *parent, struct device *host_dev, int sw_addr,
/* basic switch operations **************************************************/
int dsa_cpu_dsa_setup(struct dsa_switch *ds, struct device *dev,
struct device_node *port_dn, int port)
struct dsa_port *dport, int port)
{
struct device_node *port_dn = dport->dn;
struct phy_device *phydev;
int ret, mode;
@ -141,15 +142,15 @@ int dsa_cpu_dsa_setup(struct dsa_switch *ds, struct device *dev,
static int dsa_cpu_dsa_setups(struct dsa_switch *ds, struct device *dev)
{
struct device_node *port_dn;
struct dsa_port *dport;
int ret, port;
for (port = 0; port < DSA_MAX_PORTS; port++) {
if (!(dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port)))
continue;
port_dn = ds->ports[port].dn;
ret = dsa_cpu_dsa_setup(ds, dev, port_dn, port);
dport = &ds->ports[port];
ret = dsa_cpu_dsa_setup(ds, dev, dport, port);
if (ret)
return ret;
}
@ -364,8 +365,10 @@ dsa_switch_setup(struct dsa_switch_tree *dst, int index,
return ds;
}
void dsa_cpu_dsa_destroy(struct device_node *port_dn)
void dsa_cpu_dsa_destroy(struct dsa_port *port)
{
struct device_node *port_dn = port->dn;
if (of_phy_is_fixed_link(port_dn))
of_phy_deregister_fixed_link(port_dn);
}
@ -389,7 +392,7 @@ static void dsa_switch_destroy(struct dsa_switch *ds)
for (port = 0; port < DSA_MAX_PORTS; port++) {
if (!(dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port)))
continue;
dsa_cpu_dsa_destroy(ds->ports[port].dn);
dsa_cpu_dsa_destroy(&ds->ports[port]);
/* Clearing a bit which is not set does no harm */
ds->cpu_port_mask |= ~(1 << port);

61
net/dsa/dsa2.c
View File

@ -78,14 +78,19 @@ static void dsa_dst_del_ds(struct dsa_switch_tree *dst,
kref_put(&dst->refcount, dsa_free_dst);
}
static bool dsa_port_is_dsa(struct device_node *port)
static bool dsa_port_is_valid(struct dsa_port *port)
{
return !!of_parse_phandle(port, "link", 0);
return !!port->dn;
}
static bool dsa_port_is_cpu(struct device_node *port)
static bool dsa_port_is_dsa(struct dsa_port *port)
{
return !!of_parse_phandle(port, "ethernet", 0);
return !!of_parse_phandle(port->dn, "link", 0);
}
static bool dsa_port_is_cpu(struct dsa_port *port)
{
return !!of_parse_phandle(port->dn, "ethernet", 0);
}
static bool dsa_ds_find_port(struct dsa_switch *ds,
@ -119,7 +124,7 @@ static struct dsa_switch *dsa_dst_find_port(struct dsa_switch_tree *dst,
static int dsa_port_complete(struct dsa_switch_tree *dst,
struct dsa_switch *src_ds,
struct device_node *port,
struct dsa_port *port,
u32 src_port)
{
struct device_node *link;
@ -127,7 +132,7 @@ static int dsa_port_complete(struct dsa_switch_tree *dst,
struct dsa_switch *dst_ds;
for (index = 0;; index++) {
link = of_parse_phandle(port, "link", index);
link = of_parse_phandle(port->dn, "link", index);
if (!link)
break;
@ -150,13 +155,13 @@ static int dsa_port_complete(struct dsa_switch_tree *dst,
*/
static int dsa_ds_complete(struct dsa_switch_tree *dst, struct dsa_switch *ds)
{
struct device_node *port;
struct dsa_port *port;
u32 index;
int err;
for (index = 0; index < DSA_MAX_PORTS; index++) {
port = ds->ports[index].dn;
if (!port)
port = &ds->ports[index];
if (!dsa_port_is_valid(port))
continue;
if (!dsa_port_is_dsa(port))
@ -196,7 +201,7 @@ static int dsa_dst_complete(struct dsa_switch_tree *dst)
return 0;
}
static int dsa_dsa_port_apply(struct device_node *port, u32 index,
static int dsa_dsa_port_apply(struct dsa_port *port, u32 index,
struct dsa_switch *ds)
{
int err;
@ -211,13 +216,13 @@ static int dsa_dsa_port_apply(struct device_node *port, u32 index,
return 0;
}
static void dsa_dsa_port_unapply(struct device_node *port, u32 index,
static void dsa_dsa_port_unapply(struct dsa_port *port, u32 index,
struct dsa_switch *ds)
{
dsa_cpu_dsa_destroy(port);
}
static int dsa_cpu_port_apply(struct device_node *port, u32 index,
static int dsa_cpu_port_apply(struct dsa_port *port, u32 index,
struct dsa_switch *ds)
{
int err;
@ -234,7 +239,7 @@ static int dsa_cpu_port_apply(struct device_node *port, u32 index,
return 0;
}
static void dsa_cpu_port_unapply(struct device_node *port, u32 index,
static void dsa_cpu_port_unapply(struct dsa_port *port, u32 index,
struct dsa_switch *ds)
{
dsa_cpu_dsa_destroy(port);
@ -242,13 +247,13 @@ static void dsa_cpu_port_unapply(struct device_node *port, u32 index,
}
static int dsa_user_port_apply(struct device_node *port, u32 index,
static int dsa_user_port_apply(struct dsa_port *port, u32 index,
struct dsa_switch *ds)
{
const char *name;
int err;
name = of_get_property(port, "label", NULL);
name = of_get_property(port->dn, "label", NULL);
if (!name)
name = "eth%d";
@ -262,7 +267,7 @@ static int dsa_user_port_apply(struct device_node *port, u32 index,
return 0;
}
static void dsa_user_port_unapply(struct device_node *port, u32 index,
static void dsa_user_port_unapply(struct dsa_port *port, u32 index,
struct dsa_switch *ds)
{
if (ds->ports[index].netdev) {
@ -274,7 +279,7 @@ static void dsa_user_port_unapply(struct device_node *port, u32 index,
static int dsa_ds_apply(struct dsa_switch_tree *dst, struct dsa_switch *ds)
{
struct device_node *port;
struct dsa_port *port;
u32 index;
int err;
@ -308,8 +313,8 @@ static int dsa_ds_apply(struct dsa_switch_tree *dst, struct dsa_switch *ds)
}
for (index = 0; index < DSA_MAX_PORTS; index++) {
port = ds->ports[index].dn;
if (!port)
port = &ds->ports[index];
if (!dsa_port_is_valid(port))
continue;
if (dsa_port_is_dsa(port)) {
@ -336,12 +341,12 @@ static int dsa_ds_apply(struct dsa_switch_tree *dst, struct dsa_switch *ds)
static void dsa_ds_unapply(struct dsa_switch_tree *dst, struct dsa_switch *ds)
{
struct device_node *port;
struct dsa_port *port;
u32 index;
for (index = 0; index < DSA_MAX_PORTS; index++) {
port = ds->ports[index].dn;
if (!port)
port = &ds->ports[index];
if (!dsa_port_is_valid(port))
continue;
if (dsa_port_is_dsa(port)) {
@ -425,7 +430,7 @@ static void dsa_dst_unapply(struct dsa_switch_tree *dst)
dst->applied = false;
}
static int dsa_cpu_parse(struct device_node *port, u32 index,
static int dsa_cpu_parse(struct dsa_port *port, u32 index,
struct dsa_switch_tree *dst,
struct dsa_switch *ds)
{
@ -433,7 +438,7 @@ static int dsa_cpu_parse(struct device_node *port, u32 index,
struct net_device *ethernet_dev;
struct device_node *ethernet;
ethernet = of_parse_phandle(port, "ethernet", 0);
ethernet = of_parse_phandle(port->dn, "ethernet", 0);
if (!ethernet)
return -EINVAL;
@ -466,13 +471,13 @@ static int dsa_cpu_parse(struct device_node *port, u32 index,
static int dsa_ds_parse(struct dsa_switch_tree *dst, struct dsa_switch *ds)
{
struct device_node *port;
struct dsa_port *port;
u32 index;
int err;
for (index = 0; index < DSA_MAX_PORTS; index++) {
port = ds->ports[index].dn;
if (!port)
port = &ds->ports[index];
if (!dsa_port_is_valid(port))
continue;
if (dsa_port_is_cpu(port)) {
@ -533,7 +538,7 @@ static int dsa_parse_ports_dn(struct device_node *ports, struct dsa_switch *ds)
* to have access to a correct value, just like what
* net/dsa/dsa.c::dsa_switch_setup_one does.
*/
if (!dsa_port_is_cpu(port))
if (!dsa_port_is_cpu(&ds->ports[reg]))
ds->enabled_port_mask |= 1 << reg;
}

4
net/dsa/dsa_priv.h
View File

@ -50,8 +50,8 @@ struct dsa_slave_priv {
/* dsa.c */
int dsa_cpu_dsa_setup(struct dsa_switch *ds, struct device *dev,
struct device_node *port_dn, int port);
void dsa_cpu_dsa_destroy(struct device_node *port_dn);
struct dsa_port *dport, int port);
void dsa_cpu_dsa_destroy(struct dsa_port *dport);
const struct dsa_device_ops *dsa_resolve_tag_protocol(int tag_protocol);
int dsa_cpu_port_ethtool_setup(struct dsa_switch *ds);
void dsa_cpu_port_ethtool_restore(struct dsa_switch *ds);