From: mgross@linux.intel.com
To: markgross@kernel.org, mgross@linux.intel.com, arnd@arndb.de,
bp@suse.de, damien.lemoal@wdc.com, dragan.cvetic@xilinx.com,
gregkh@linuxfoundation.org, corbet@lwn.net,
palmerdabbelt@google.com, paul.walmsley@sifive.com,
peng.fan@nxp.com, robh+dt@kernel.org, shawnguo@kernel.org,
jassisinghbrar@gmail.com
Cc: linux-kernel@vger.kernel.org,
Srikanth Thokala <srikanth.thokala@intel.com>
Subject: [PATCH v3 16/34] misc: xlink-pcie: Add asynchronous event notification support for XLink
Date: Mon, 25 Jan 2021 21:40:18 -0800 [thread overview]
Message-ID: <20210126054036.61587-17-mgross@linux.intel.com> (raw)
In-Reply-To: <20210126054036.61587-1-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 f43c175b7a48..87b302f87cfd 100644
--- a/drivers/misc/xlink-pcie/common/core.h
+++ b/drivers/misc/xlink-pcie/common/core.h
@@ -239,4 +239,7 @@ 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 fcc69a940a4c..5d30c27dd18d 100644
--- a/drivers/misc/xlink-pcie/common/interface.c
+++ b/drivers/misc/xlink-pcie/common/interface.c
@@ -105,3 +105,20 @@ int xlink_pcie_reset_device(u32 sw_device_id)
return intel_xpcie_pci_reset_device(sw_device_id);
}
EXPORT_SYMBOL_GPL(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_GPL(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_GPL(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 2c4e29bce7f7..bfb14c18c24c 100644
--- a/drivers/misc/xlink-pcie/local_host/core.c
+++ b/drivers/misc/xlink-pcie/local_host/core.c
@@ -804,3 +804,14 @@ 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 ed1a431ed5d4..efc9143a2fac 100644
--- a/drivers/misc/xlink-pcie/remote_host/main.c
+++ b/drivers/misc/xlink-pcie/remote_host/main.c
@@ -53,6 +53,8 @@ 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;
}
@@ -62,6 +64,7 @@ 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 71cbe779d1bc..6a79782b983e 100644
--- a/drivers/misc/xlink-pcie/remote_host/pci.c
+++ b/drivers/misc/xlink-pcie/remote_host/pci.c
@@ -6,6 +6,7 @@
*/
#include <linux/mutex.h>
+#include <linux/pci.h>
#include <linux/sched.h>
#include <linux/wait.h>
#include <linux/workqueue.h>
@@ -485,3 +486,38 @@ 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 bd6b01cc58b8..b082bfb73e4f 100644
--- a/drivers/misc/xlink-pcie/remote_host/pci.h
+++ b/drivers/misc/xlink-pcie/remote_host/pci.h
@@ -36,6 +36,7 @@ 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)
@@ -58,5 +59,7 @@ 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 8ffbaafecc88..f20f69bd879a 100644
--- a/include/linux/xlink_drv_inf.h
+++ b/include/linux/xlink_drv_inf.h
@@ -42,6 +42,15 @@ 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,
@@ -55,4 +64,7 @@ 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:[~2021-01-26 23:33 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-26 5:40 [PATCH v3 00/34] Intel Vision Processing base enabling mgross
2021-01-26 5:40 ` [PATCH v3 01/34] Add Vision Processing Unit (VPU) documentation mgross
2021-01-26 5:40 ` [PATCH v3 02/34] dt-bindings: mailbox: Add Intel VPU IPC mailbox bindings mgross
2021-01-26 13:44 ` Rob Herring
2021-01-26 14:47 ` Gross, Mark
2021-01-28 21:42 ` mark gross
2021-01-26 5:40 ` [PATCH v3 03/34] mailbox: vpu-ipc-mailbox: Add support for Intel VPU IPC mailbox mgross
2021-01-26 5:40 ` [PATCH v3 04/34] dt-bindings: Add bindings for Keem Bay IPC driver mgross
2021-01-26 5:40 ` [PATCH v3 05/34] keembay-ipc: Add Keem Bay IPC module mgross
2021-01-26 5:40 ` [PATCH v3 06/34] dt-bindings: Add bindings for Keem Bay VPU IPC driver mgross
2021-01-27 14:00 ` Rob Herring
2021-01-30 2:02 ` mark gross
2021-01-26 5:40 ` [PATCH v3 07/34] keembay-vpu-ipc: Add Keem Bay VPU IPC module mgross
2021-01-26 5:40 ` [PATCH v3 08/34] misc: xlink-pcie: Add documentation for XLink PCIe driver mgross
2021-01-26 5:40 ` [PATCH v3 09/34] misc: xlink-pcie: lh: Add PCIe EPF driver for Local Host mgross
2021-01-26 5:40 ` [PATCH v3 10/34] misc: xlink-pcie: lh: Add PCIe EP DMA functionality mgross
2021-01-26 5:40 ` [PATCH v3 11/34] misc: xlink-pcie: lh: Add core communication logic mgross
2021-01-26 5:40 ` [PATCH v3 12/34] misc: xlink-pcie: lh: Prepare changes for adding remote host driver mgross
2021-01-26 5:40 ` [PATCH v3 13/34] misc: xlink-pcie: rh: Add PCIe EP driver for Remote Host mgross
2021-01-26 5:40 ` [PATCH v3 14/34] misc: xlink-pcie: rh: Add core communication logic mgross
2021-01-26 5:40 ` [PATCH v3 15/34] misc: xlink-pcie: Add XLink API interface mgross
2021-01-26 5:40 ` mgross [this message]
2021-01-26 5:40 ` [PATCH v3 17/34] xlink-ipc: Add xlink ipc device tree bindings mgross
2021-01-27 14:00 ` Rob Herring
2021-01-26 5:40 ` [PATCH v3 18/34] xlink-ipc: Add xlink ipc driver mgross
2021-01-26 5:40 ` [PATCH v3 19/34] xlink-core: Add xlink core device tree bindings mgross
2021-01-27 14:00 ` Rob Herring
2021-01-26 5:40 ` [PATCH v3 20/34] xlink-core: Add xlink core driver xLink mgross
2021-01-26 5:40 ` [PATCH v3 21/34] xlink-core: Enable xlink protocol over pcie mgross
2021-01-26 5:40 ` [PATCH v3 22/34] xlink-core: Enable VPU IP management and runtime control mgross
2021-01-26 5:40 ` [PATCH v3 23/34] xlink-core: add async channel and events mgross
2021-01-26 5:40 ` [PATCH v3 24/34] dt-bindings: misc: Add Keem Bay vpumgr mgross
2021-01-26 5:40 ` [PATCH v3 25/34] misc: Add Keem Bay VPU manager mgross
2021-01-27 4:31 ` Randy Dunlap
2021-01-26 5:40 ` [PATCH v3 26/34] dt-bindings: misc: intel_tsens: Add tsens thermal bindings documentation mgross
2021-01-26 5:40 ` [PATCH v3 27/34] misc: Tsens ARM host thermal driver mgross
2021-01-26 5:40 ` [PATCH v3 28/34] misc: Intel tsens IA host driver mgross
2021-01-26 5:40 ` [PATCH v3 29/34] Intel tsens i2c slave driver mgross
2021-01-27 4:36 ` Randy Dunlap
2021-01-26 5:40 ` [PATCH v3 30/34] misc:intel_tsens: Intel Keem Bay tsens driver mgross
2021-01-26 5:40 ` [PATCH v3 31/34] Intel Keem Bay XLink SMBus driver mgross
2021-01-27 4:29 ` Randy Dunlap
2021-01-26 5:40 ` [PATCH v3 32/34] dt-bindings: misc: hddl_dev: Add hddl device management documentation mgross
2021-01-26 5:40 ` [PATCH v3 33/34] misc: Hddl device management for local host mgross
2021-01-27 4:34 ` Randy Dunlap
2021-01-26 5:40 ` [PATCH v3 34/34] misc: HDDL device management for IA host mgross
2021-01-27 4:26 ` Randy Dunlap
2021-01-30 2:20 [PATCH v3 00/34] Intel Vision Processing base enabling mgross
2021-01-30 2:20 ` [PATCH v3 16/34] misc: xlink-pcie: Add asynchronous event notification support for XLink mgross
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