thunderbolt: Generalize port finding routines to support all port types
We will be needing these routines to find Display Port adapters as well
so modify them to take port type as the second parameter.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c
index 00aec21..028e9a2 100644
--- a/drivers/thunderbolt/switch.c
+++ b/drivers/thunderbolt/switch.c
@@ -731,6 +731,22 @@
}
/**
+ * tb_port_is_enabled() - Is the adapter port enabled
+ * @port: Port to check
+ */
+bool tb_port_is_enabled(struct tb_port *port)
+{
+ switch (port->config.type) {
+ case TB_TYPE_PCIE_UP:
+ case TB_TYPE_PCIE_DOWN:
+ return tb_pci_port_is_enabled(port);
+
+ default:
+ return false;
+ }
+}
+
+/**
* tb_pci_port_is_enabled() - Is the PCIe adapter port enabled
* @port: PCIe port to check
*/
diff --git a/drivers/thunderbolt/tb.c b/drivers/thunderbolt/tb.c
index fb01396..903922a 100644
--- a/drivers/thunderbolt/tb.c
+++ b/drivers/thunderbolt/tb.c
@@ -180,40 +180,39 @@
}
}
-
/**
- * find_pci_up_port() - return the first PCIe up port on @sw or NULL
+ * tb_find_port() - return the first port of @type on @sw or NULL
+ * @sw: Switch to find the port from
+ * @type: Port type to look for
*/
-static struct tb_port *tb_find_pci_up_port(struct tb_switch *sw)
+static struct tb_port *tb_find_port(struct tb_switch *sw,
+ enum tb_port_type type)
{
int i;
for (i = 1; i <= sw->config.max_port_number; i++)
- if (sw->ports[i].config.type == TB_TYPE_PCIE_UP)
+ if (sw->ports[i].config.type == type)
return &sw->ports[i];
return NULL;
}
/**
- * find_unused_down_port() - return the first inactive PCIe down port on @sw
+ * tb_find_unused_port() - return the first inactive port on @sw
+ * @sw: Switch to find the port on
+ * @type: Port type to look for
*/
-static struct tb_port *tb_find_unused_down_port(struct tb_switch *sw)
+static struct tb_port *tb_find_unused_port(struct tb_switch *sw,
+ enum tb_port_type type)
{
int i;
- int cap;
- int res;
- int data;
+
for (i = 1; i <= sw->config.max_port_number; i++) {
if (tb_is_upstream_port(&sw->ports[i]))
continue;
- if (sw->ports[i].config.type != TB_TYPE_PCIE_DOWN)
+ if (sw->ports[i].config.type != type)
continue;
- cap = sw->ports[i].cap_adap;
- if (!cap)
+ if (!sw->ports[i].cap_adap)
continue;
- res = tb_port_read(&sw->ports[i], &data, TB_CFG_PORT, cap, 1);
- if (res < 0)
- continue;
- if (data & 0x80000000)
+ if (tb_port_is_enabled(&sw->ports[i]))
continue;
return &sw->ports[i];
}
@@ -255,7 +254,7 @@
}
out:
- return tb_find_unused_down_port(sw);
+ return tb_find_unused_port(sw, TB_TYPE_PCIE_DOWN);
}
static int tb_tunnel_pci(struct tb *tb, struct tb_switch *sw)
@@ -265,7 +264,7 @@
struct tb_switch *parent_sw;
struct tb_tunnel *tunnel;
- up = tb_find_pci_up_port(sw);
+ up = tb_find_port(sw, TB_TYPE_PCIE_UP);
if (!up)
return 0;
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h
index 260360e..e6040c9 100644
--- a/drivers/thunderbolt/tb.h
+++ b/drivers/thunderbolt/tb.h
@@ -576,6 +576,7 @@
int tb_switch_find_vse_cap(struct tb_switch *sw, enum tb_switch_vse_cap vsec);
int tb_port_find_cap(struct tb_port *port, enum tb_port_cap cap);
+bool tb_port_is_enabled(struct tb_port *port);
bool tb_pci_port_is_enabled(struct tb_port *port);
int tb_pci_port_enable(struct tb_port *port, bool enable);
