From: mgross@linux.intel.com
To: linux-kernel@vger.kernel.org
Cc: markgross@kernel.org, mgross@linux.intel.com,
adam.r.gretzinger@intel.com,
Srikanth Thokala <srikanth.thokala@intel.com>,
Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 14/22] misc: xlink-pcie: Add asynchronous event notification support for XLink
Date: Mon, 30 Nov 2020 15:06:59 -0800 [thread overview]
Message-ID: <20201130230707.46351-15-mgross@linux.intel.com> (raw)
In-Reply-To: <20201130230707.46351-1-mgross@linux.intel.com>
From: Srikanth Thokala <srikanth.thokala@intel.com>
Add support to notify XLink layer upon PCIe link UP/DOWN events
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Mark Gross <mgross@linux.intel.com>
Signed-off-by: Srikanth Thokala <srikanth.thokala@intel.com>
---
drivers/misc/xlink-pcie/common/core.h | 3 ++
drivers/misc/xlink-pcie/common/interface.c | 17 ++++++++++
drivers/misc/xlink-pcie/local_host/core.c | 11 +++++++
drivers/misc/xlink-pcie/remote_host/main.c | 3 ++
drivers/misc/xlink-pcie/remote_host/pci.c | 36 ++++++++++++++++++++++
drivers/misc/xlink-pcie/remote_host/pci.h | 3 ++
include/linux/xlink_drv_inf.h | 12 ++++++++
7 files changed, 85 insertions(+)
diff --git a/drivers/misc/xlink-pcie/common/core.h b/drivers/misc/xlink-pcie/common/core.h
index eec8566c19d9..34b6c268aac5 100644
--- a/drivers/misc/xlink-pcie/common/core.h
+++ b/drivers/misc/xlink-pcie/common/core.h
@@ -241,4 +241,7 @@ int intel_xpcie_pci_connect_device(u32 id);
int intel_xpcie_pci_read(u32 id, void *data, size_t *size, u32 timeout);
int intel_xpcie_pci_write(u32 id, void *data, size_t *size, u32 timeout);
int intel_xpcie_pci_reset_device(u32 id);
+int intel_xpcie_pci_register_device_event(u32 sw_device_id,
+ xlink_device_event event_notif_fn);
+int intel_xpcie_pci_unregister_device_event(u32 sw_device_id);
#endif /* XPCIE_CORE_HEADER_ */
diff --git a/drivers/misc/xlink-pcie/common/interface.c b/drivers/misc/xlink-pcie/common/interface.c
index 56c1d9ed9d8f..4ad291ff97c8 100644
--- a/drivers/misc/xlink-pcie/common/interface.c
+++ b/drivers/misc/xlink-pcie/common/interface.c
@@ -107,3 +107,20 @@ int xlink_pcie_reset_device(u32 sw_device_id)
return intel_xpcie_pci_reset_device(sw_device_id);
}
EXPORT_SYMBOL(xlink_pcie_reset_device);
+
+int xlink_pcie_register_device_event(u32 sw_device_id,
+ xlink_device_event event_notif_fn)
+{
+ if (!event_notif_fn)
+ return -EINVAL;
+
+ return intel_xpcie_pci_register_device_event(sw_device_id,
+ event_notif_fn);
+}
+EXPORT_SYMBOL(xlink_pcie_register_device_event);
+
+int xlink_pcie_unregister_device_event(u32 sw_device_id)
+{
+ return intel_xpcie_pci_unregister_device_event(sw_device_id);
+}
+EXPORT_SYMBOL(xlink_pcie_unregister_device_event);
diff --git a/drivers/misc/xlink-pcie/local_host/core.c b/drivers/misc/xlink-pcie/local_host/core.c
index 0f83b5ffc4f2..628c383113ca 100644
--- a/drivers/misc/xlink-pcie/local_host/core.c
+++ b/drivers/misc/xlink-pcie/local_host/core.c
@@ -892,3 +892,14 @@ int intel_xpcie_pci_reset_device(u32 id)
{
return 0;
}
+
+int intel_xpcie_pci_register_device_event(u32 sw_device_id,
+ xlink_device_event event_notif_fn)
+{
+ return 0;
+}
+
+int intel_xpcie_pci_unregister_device_event(u32 sw_device_id)
+{
+ return 0;
+}
diff --git a/drivers/misc/xlink-pcie/remote_host/main.c b/drivers/misc/xlink-pcie/remote_host/main.c
index 810da1509418..421635321f1b 100644
--- a/drivers/misc/xlink-pcie/remote_host/main.c
+++ b/drivers/misc/xlink-pcie/remote_host/main.c
@@ -55,6 +55,8 @@ static int intel_xpcie_probe(struct pci_dev *pdev,
if (new_device)
intel_xpcie_list_add_device(xdev);
+ intel_xpcie_pci_notify_event(xdev, NOTIFY_DEVICE_CONNECTED);
+
return ret;
}
@@ -64,6 +66,7 @@ static void intel_xpcie_remove(struct pci_dev *pdev)
if (xdev) {
intel_xpcie_pci_cleanup(xdev);
+ intel_xpcie_pci_notify_event(xdev, NOTIFY_DEVICE_DISCONNECTED);
intel_xpcie_remove_device(xdev);
}
}
diff --git a/drivers/misc/xlink-pcie/remote_host/pci.c b/drivers/misc/xlink-pcie/remote_host/pci.c
index f92a78f41324..0046bff5f604 100644
--- a/drivers/misc/xlink-pcie/remote_host/pci.c
+++ b/drivers/misc/xlink-pcie/remote_host/pci.c
@@ -8,6 +8,7 @@
****************************************************************************/
#include <linux/mutex.h>
+#include <linux/pci.h>
#include <linux/sched.h>
#include <linux/wait.h>
#include <linux/workqueue.h>
@@ -487,3 +488,38 @@ int intel_xpcie_pci_reset_device(u32 id)
return intel_xpcie_pci_prepare_dev_reset(xdev, true);
}
+
+int intel_xpcie_pci_register_device_event(u32 sw_device_id,
+ xlink_device_event event_notif_fn)
+{
+ struct xpcie_dev *xdev = intel_xpcie_get_device_by_id(sw_device_id);
+
+ if (!xdev)
+ return -ENOMEM;
+
+ xdev->event_fn = event_notif_fn;
+
+ return 0;
+}
+
+int intel_xpcie_pci_unregister_device_event(u32 sw_device_id)
+{
+ struct xpcie_dev *xdev = intel_xpcie_get_device_by_id(sw_device_id);
+
+ if (!xdev)
+ return -ENOMEM;
+
+ xdev->event_fn = NULL;
+
+ return 0;
+}
+
+void intel_xpcie_pci_notify_event(struct xpcie_dev *xdev,
+ enum xlink_device_event_type event_type)
+{
+ if (event_type >= NUM_EVENT_TYPE)
+ return;
+
+ if (xdev->event_fn)
+ xdev->event_fn(xdev->devid, event_type);
+}
diff --git a/drivers/misc/xlink-pcie/remote_host/pci.h b/drivers/misc/xlink-pcie/remote_host/pci.h
index 72de3701f83a..a05dedf36a12 100644
--- a/drivers/misc/xlink-pcie/remote_host/pci.h
+++ b/drivers/misc/xlink-pcie/remote_host/pci.h
@@ -38,6 +38,7 @@ struct xpcie_dev {
irq_handler_t core_irq_callback;
struct xpcie xpcie;
+ xlink_device_event event_fn;
};
static inline struct device *xpcie_to_dev(struct xpcie *xpcie)
@@ -60,5 +61,7 @@ struct xpcie_dev *intel_xpcie_create_device(u32 sw_device_id,
void intel_xpcie_remove_device(struct xpcie_dev *xdev);
void intel_xpcie_list_add_device(struct xpcie_dev *xdev);
void intel_xpcie_list_del_device(struct xpcie_dev *xdev);
+void intel_xpcie_pci_notify_event(struct xpcie_dev *xdev,
+ enum xlink_device_event_type event_type);
#endif /* XPCIE_PCI_HEADER_ */
diff --git a/include/linux/xlink_drv_inf.h b/include/linux/xlink_drv_inf.h
index ffe8f4c253e6..5ca0ae1ae2e3 100644
--- a/include/linux/xlink_drv_inf.h
+++ b/include/linux/xlink_drv_inf.h
@@ -44,6 +44,15 @@ enum _xlink_device_status {
_XLINK_DEV_READY
};
+enum xlink_device_event_type {
+ NOTIFY_DEVICE_DISCONNECTED,
+ NOTIFY_DEVICE_CONNECTED,
+ NUM_EVENT_TYPE
+};
+
+typedef int (*xlink_device_event)(u32 sw_device_id,
+ enum xlink_device_event_type event_type);
+
int xlink_pcie_get_device_list(u32 *sw_device_id_list,
u32 *num_devices);
int xlink_pcie_get_device_name(u32 sw_device_id, char *device_name,
@@ -57,4 +66,7 @@ int xlink_pcie_read(u32 sw_device_id, void *data, size_t *const size,
int xlink_pcie_write(u32 sw_device_id, void *data, size_t *const size,
u32 timeout);
int xlink_pcie_reset_device(u32 sw_device_id);
+int xlink_pcie_register_device_event(u32 sw_device_id,
+ xlink_device_event event_notif_fn);
+int xlink_pcie_unregister_device_event(u32 sw_device_id);
#endif
--
2.17.1
next prev parent reply other threads:[~2020-11-30 23:09 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-30 23:06 [PATCH 00/22] Intel Vision Processing Unit base enabling part 1 mgross
2020-11-30 23:06 ` [PATCH 01/22] Add Vision Processing Unit (VPU) documentation mgross
2020-11-30 23:06 ` [PATCH 02/22] dt-bindings: Add bindings for Keem Bay IPC driver mgross
2020-11-30 23:06 ` [PATCH 03/22] keembay-ipc: Add Keem Bay IPC module mgross
2020-11-30 23:06 ` [PATCH 04/22] dt-bindings: Add bindings for Keem Bay VPU IPC driver mgross
2020-11-30 23:06 ` [PATCH 05/22] keembay-vpu-ipc: Add Keem Bay VPU IPC module mgross
2020-11-30 23:06 ` [PATCH 06/22] misc: xlink-pcie: Add documentation for XLink PCIe driver mgross
2020-11-30 23:06 ` [PATCH 07/22] misc: xlink-pcie: lh: Add PCIe EPF driver for Local Host mgross
2020-12-01 10:13 ` Greg Kroah-Hartman
2020-12-01 17:45 ` mark gross
2020-12-01 17:54 ` Greg Kroah-Hartman
2020-12-01 22:00 ` mark gross
2020-12-01 18:29 ` Dragan Cvetic
2020-12-01 10:17 ` Greg Kroah-Hartman
2020-12-02 16:48 ` Thokala, Srikanth
2020-11-30 23:06 ` [PATCH 08/22] misc: xlink-pcie: lh: Add PCIe EP DMA functionality mgross
2020-11-30 23:06 ` [PATCH 09/22] misc: xlink-pcie: lh: Add core communication logic mgross
2020-12-01 10:15 ` Greg Kroah-Hartman
2020-11-30 23:06 ` [PATCH 10/22] misc: xlink-pcie: lh: Prepare changes for adding remote host driver mgross
2020-11-30 23:06 ` [PATCH 11/22] misc: xlink-pcie: rh: Add PCIe EP driver for Remote Host mgross
2020-11-30 23:06 ` [PATCH 12/22] misc: xlink-pcie: rh: Add core communication logic mgross
2020-11-30 23:06 ` [PATCH 13/22] misc: xlink-pcie: Add XLink API interface mgross
2020-11-30 23:06 ` mgross [this message]
2020-11-30 23:07 ` [PATCH 15/22] xlink-ipc: Add xlink ipc device tree bindings mgross
2020-11-30 23:07 ` [PATCH 16/22] xlink-ipc: Add xlink ipc driver mgross
2020-11-30 23:07 ` [PATCH 17/22] xlink-core: Add xlink core device tree bindings mgross
2020-11-30 23:07 ` [PATCH 18/22] xlink-core: Add xlink core driver xLink mgross
2020-11-30 23:07 ` [PATCH 19/22] xlink-core: Enable xlink protocol over pcie mgross
2020-11-30 23:07 ` [PATCH 20/22] xlink-core: Enable VPU IP management and runtime control mgross
2020-11-30 23:07 ` [PATCH 21/22] xlink-core: add async channel and events mgross
2020-11-30 23:07 ` [PATCH 22/22] xlink-core: factorize xlink_ioctl function by creating sub-functions for each ioctl command mgross
2020-12-01 10:14 ` [PATCH 00/22] Intel Vision Processing Unit base enabling part 1 Greg KH
2020-12-01 17:53 ` mark gross
-- strict thread matches above, loose matches on Subject: below --
2020-12-01 22:34 mgross
2020-12-01 22:35 ` [PATCH 14/22] misc: xlink-pcie: Add asynchronous event notification support for XLink mgross
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