[PATCH v3 05/23] PCI: endpoint: Create configfs entry for EPC device and EPF driver

Kishon Vijay Abraham I
2017-03-09T07:59:09Z

Invoke API's provided by pci-ep-cfs to create configfs entry for
every EPC device and EPF driver to help users in creating EPF device
and binding the EPF device to the EPC device.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
drivers/pci/endpoint/pci-epc-core.c | 4 ++++
drivers/pci/endpoint/pci-epf-core.c | 4 ++++
include/linux/pci-epc.h | 2 ++
include/linux/pci-epf.h | 2 ++
4 files changed, 12 insertions(+)

diff --git a/drivers/pci/endpoint/pci-epc-core.c b/drivers/pci/endpoint/pci-epc-core.c
index 06808ed..29cbe9a 100644
--- a/drivers/pci/endpoint/pci-epc-core.c
+++ b/drivers/pci/endpoint/pci-epc-core.c
@@ -24,6 +24,7 @@

#include <linux/pci-epc.h>
#include <linux/pci-epf.h>
+#include <linux/pci-ep-cfs.h>

static struct class *pci_epc_class;

@@ -441,6 +442,7 @@ void pci_epc_linkup(struct pci_epc *epc)
*/
void pci_epc_destroy(struct pci_epc *epc)
{
+ pci_ep_cfs_remove_epc_group(epc->group);
device_unregister(&epc->dev);
kfree(epc);
}
@@ -507,6 +509,8 @@ struct pci_epc *
if (ret)
goto put_dev;

+ epc->group = pci_ep_cfs_add_epc_group(dev_name(dev));
+
return epc;

put_dev:
diff --git a/drivers/pci/endpoint/pci-epf-core.c b/drivers/pci/endpoint/pci-epf-core.c
index 4c903fc..9ec1639 100644
--- a/drivers/pci/endpoint/pci-epf-core.c
+++ b/drivers/pci/endpoint/pci-epf-core.c
@@ -24,6 +24,7 @@

#include <linux/pci-epc.h>
#include <linux/pci-epf.h>
+#include <linux/pci-ep-cfs.h>

static struct bus_type pci_epf_bus_type;
static struct device_type pci_epf_type;
@@ -143,6 +144,7 @@ void *pci_epf_alloc_space(struct pci_epf *epf, size_t size, enum pci_barno bar)
*/
void pci_epf_unregister_driver(struct pci_epf_driver *driver)
{
+ pci_ep_cfs_remove_epf_group(driver->group);
driver_unregister(&driver->driver);
}
EXPORT_SYMBOL_GPL(pci_epf_unregister_driver);
@@ -172,6 +174,8 @@ int __pci_epf_register_driver(struct pci_epf_driver *driver,
if (ret)
return ret;

+ driver->group = pci_ep_cfs_add_epf_group(driver->driver.name);
+
return 0;
}
EXPORT_SYMBOL_GPL(__pci_epf_register_driver);
diff --git a/include/linux/pci-epc.h b/include/linux/pci-epc.h
index ad0cd46..d6eb322 100644
--- a/include/linux/pci-epc.h
+++ b/include/linux/pci-epc.h
@@ -77,6 +77,7 @@ struct pci_epc_mem {
* @ops: function pointers for performing endpoint operations
* @mem: address space of the endpoint controller
* @max_functions: max number of functions that can be configured in this EPC
+ * @group: configfs group representing the PCI EPC device
* @lock: spinlock to protect pci_epc ops
*/
struct pci_epc {
@@ -85,6 +86,7 @@ struct pci_epc {
const struct pci_epc_ops *ops;
struct pci_epc_mem *mem;
u8 max_functions;
+ struct config_group *group;
/* spinlock to protect against concurrent access of EP controller */
spinlock_t lock;
};
diff --git a/include/linux/pci-epf.h b/include/linux/pci-epf.h
index 54f1338..5ff2c5a 100644
--- a/include/linux/pci-epf.h
+++ b/include/linux/pci-epf.h
@@ -82,6 +82,7 @@ struct pci_epf_ops {
* @driver: PCI EPF driver
* @ops: set of function pointers for performing EPF operations
* @owner: the owner of the module that registers the PCI EPF driver
+ * @group: configfs group corresponding to the PCI EPF driver
* @id_table: identifies EPF devices for probing
*/
struct pci_epf_driver {
@@ -91,6 +92,7 @@ struct pci_epf_driver {
struct device_driver driver;
struct pci_epf_ops *ops;
struct module *owner;
+ struct config_group *group;
const struct pci_epf_device_id *id_table;
};

--
1.7.9.5