From: Kishon Vijay Abraham I <kishon@ti.com>
To: <kishon@ti.com>, Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Bjorn Helgaas <bhelgaas@google.com>
Cc: <linux-pci@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Subject: [PATCH] PCI: endpoint: Create configfs entry for each pci_epf_device_id table entry
Date: Mon, 2 Apr 2018 18:59:35 +0530 [thread overview]
Message-ID: <20180402132935.32008-1-kishon@ti.com> (raw)
In order to be able to provide correct driver_data for pci_epf device,
a separate configfs entry for each pci_epf_device_id table entry in
pci_epf_driver is required.
Add support to create configfs entry for each pci_epf_device_id
table entry here.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
drivers/pci/endpoint/pci-epf-core.c | 23 +++++++++++++++++++++--
include/linux/pci-epf.h | 4 ++--
2 files changed, 23 insertions(+), 4 deletions(-)
diff --git a/drivers/pci/endpoint/pci-epf-core.c b/drivers/pci/endpoint/pci-epf-core.c
index 59ed29e550e9..d6787f39fd41 100644
--- a/drivers/pci/endpoint/pci-epf-core.c
+++ b/drivers/pci/endpoint/pci-epf-core.c
@@ -15,6 +15,8 @@
#include <linux/pci-epf.h>
#include <linux/pci-ep-cfs.h>
+static DEFINE_MUTEX(pci_epf_mutex);
+
static struct bus_type pci_epf_bus_type;
static const struct device_type pci_epf_type;
@@ -139,7 +141,13 @@ 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);
+ struct config_group *group;
+
+ mutex_lock(&pci_epf_mutex);
+ list_for_each_entry(group, &driver->epf_group, group_entry)
+ pci_ep_cfs_remove_epf_group(group);
+ list_del(&driver->epf_group);
+ mutex_unlock(&pci_epf_mutex);
driver_unregister(&driver->driver);
}
EXPORT_SYMBOL_GPL(pci_epf_unregister_driver);
@@ -155,6 +163,8 @@ int __pci_epf_register_driver(struct pci_epf_driver *driver,
struct module *owner)
{
int ret;
+ struct config_group *group;
+ const struct pci_epf_device_id *id;
if (!driver->ops)
return -EINVAL;
@@ -169,7 +179,16 @@ 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);
+ INIT_LIST_HEAD(&driver->epf_group);
+
+ id = driver->id_table;
+ while (id->name[0]) {
+ group = pci_ep_cfs_add_epf_group(id->name);
+ mutex_lock(&pci_epf_mutex);
+ list_add_tail(&group->group_entry, &driver->epf_group);
+ mutex_unlock(&pci_epf_mutex);
+ id++;
+ }
return 0;
}
diff --git a/include/linux/pci-epf.h b/include/linux/pci-epf.h
index e897bf076701..a30dcaafa6e8 100644
--- a/include/linux/pci-epf.h
+++ b/include/linux/pci-epf.h
@@ -72,7 +72,7 @@ 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
+ * @epf_group: list of configfs group corresponding to the PCI EPF driver
* @id_table: identifies EPF devices for probing
*/
struct pci_epf_driver {
@@ -82,7 +82,7 @@ struct pci_epf_driver {
struct device_driver driver;
struct pci_epf_ops *ops;
struct module *owner;
- struct config_group *group;
+ struct list_head epf_group;
const struct pci_epf_device_id *id_table;
};
--
2.16.2
next reply other threads:[~2018-04-02 13:29 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-02 13:29 Kishon Vijay Abraham I [this message]
2018-04-06 15:27 ` [PATCH] PCI: endpoint: Create configfs entry for each pci_epf_device_id table entry Gustavo Pimentel
2018-05-18 14:22 ` Lorenzo Pieralisi
2018-05-18 14:49 ` Kishon Vijay Abraham I
2018-05-18 16:01 ` Lorenzo Pieralisi
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