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PCI: endpoint: Create configfs entry for EPC device and EPF driver

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Invoke APIs 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>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Kishon Vijay Abraham I 2017-03-27 15:15:01 +05:30 committed by Bjorn Helgaas
parent bea37d3d31
commit 3a401a2ce1
4 changed files with 12 additions and 0 deletions
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4
drivers/pci/endpoint/pci-epc-core.c
View File

@ -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;
@ -442,6 +443,7 @@ EXPORT_SYMBOL_GPL(pci_epc_linkup);
*/
void pci_epc_destroy(struct pci_epc *epc)
{
pci_ep_cfs_remove_epc_group(epc->group);
device_unregister(&epc->dev);
kfree(epc);
}
@ -508,6 +510,8 @@ __pci_epc_create(struct device *dev, const struct pci_epc_ops *ops,
if (ret)
goto put_dev;
epc->group = pci_ep_cfs_add_epc_group(dev_name(dev));
return epc;
put_dev:

4
drivers/pci/endpoint/pci-epf-core.c
View File

@ -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;
@ -149,6 +150,7 @@ EXPORT_SYMBOL_GPL(pci_epf_alloc_space);
*/
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);
@ -178,6 +180,8 @@ 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);

2
include/linux/pci-epc.h
View File

@ -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;
};

2
include/linux/pci-epf.h
View File

@ -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;
};