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From: Vidya Sagar <vidyas@nvidia.com>
To: <jingoohan1@gmail.com>, <gustavo.pimentel@synopsys.com>,
	<lorenzo.pieralisi@arm.com>, <andrew.murray@arm.com>,
	<bhelgaas@google.com>, <kishon@ti.com>,
	<thierry.reding@gmail.com>
Cc: <Jisheng.Zhang@synaptics.com>, <jonathanh@nvidia.com>,
	<linux-pci@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<kthota@nvidia.com>, <mmaddireddy@nvidia.com>,
	<vidyas@nvidia.com>, <sagar.tv@gmail.com>
Subject: [PATCH 2/4] PCI: endpoint: Add notification for core init completion
Date: Wed, 13 Nov 2019 14:38:49 +0530	[thread overview]
Message-ID: <20191113090851.26345-3-vidyas@nvidia.com> (raw)
In-Reply-To: <20191113090851.26345-1-vidyas@nvidia.com>

Add support to send notifications to EPF from EPC once the core
registers initialization is complete.

Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
---
 drivers/pci/endpoint/pci-epc-core.c | 19 ++++++++++++++++++-
 include/linux/pci-epc.h             |  1 +
 include/linux/pci-epf.h             |  5 +++++
 3 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/endpoint/pci-epc-core.c b/drivers/pci/endpoint/pci-epc-core.c
index 2f6436599fcb..fcc3f7fb19c0 100644
--- a/drivers/pci/endpoint/pci-epc-core.c
+++ b/drivers/pci/endpoint/pci-epc-core.c
@@ -542,10 +542,27 @@ void pci_epc_linkup(struct pci_epc *epc)
 	if (!epc || IS_ERR(epc))
 		return;
 
-	atomic_notifier_call_chain(&epc->notifier, 0, NULL);
+	atomic_notifier_call_chain(&epc->notifier, LINK_UP, NULL);
 }
 EXPORT_SYMBOL_GPL(pci_epc_linkup);
 
+/**
+ * pci_epc_init_notify() - Notify the EPF device that EPC device's core
+ *			   initialization is completed.
+ * @epc: the EPC device whose core initialization is completeds
+ *
+ * Invoke to Notify the EPF device that the EPC device's initialization
+ * is completed.
+ */
+void pci_epc_init_notify(struct pci_epc *epc)
+{
+	if (!epc || IS_ERR(epc))
+		return;
+
+	atomic_notifier_call_chain(&epc->notifier, CORE_INIT, NULL);
+}
+EXPORT_SYMBOL_GPL(pci_epc_init_notify);
+
 /**
  * pci_epc_destroy() - destroy the EPC device
  * @epc: the EPC device that has to be destroyed
diff --git a/include/linux/pci-epc.h b/include/linux/pci-epc.h
index 241e6a6f39fb..c670543e42f9 100644
--- a/include/linux/pci-epc.h
+++ b/include/linux/pci-epc.h
@@ -160,6 +160,7 @@ void devm_pci_epc_destroy(struct device *dev, struct pci_epc *epc);
 void pci_epc_destroy(struct pci_epc *epc);
 int pci_epc_add_epf(struct pci_epc *epc, struct pci_epf *epf);
 void pci_epc_linkup(struct pci_epc *epc);
+void pci_epc_init_notify(struct pci_epc *epc);
 void pci_epc_remove_epf(struct pci_epc *epc, struct pci_epf *epf);
 int pci_epc_write_header(struct pci_epc *epc, u8 func_no,
 			 struct pci_epf_header *hdr);
diff --git a/include/linux/pci-epf.h b/include/linux/pci-epf.h
index 4993f7f6439b..3cb65ac1648c 100644
--- a/include/linux/pci-epf.h
+++ b/include/linux/pci-epf.h
@@ -15,6 +15,11 @@
 
 struct pci_epf;
 
+enum pci_notify_event {
+	CORE_INIT,
+	LINK_UP,
+};
+
 enum pci_barno {
 	BAR_0,
 	BAR_1,
-- 
2.17.1


  parent reply	other threads:[~2019-11-13  9:09 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-13  9:08 [PATCH 0/4] Add support to defer core initialization Vidya Sagar
2019-11-13  9:08 ` [PATCH 1/4] PCI: dwc: Add new feature to skip " Vidya Sagar
2019-11-27  8:14   ` Kishon Vijay Abraham I
2019-11-27  8:40     ` Vidya Sagar
2019-11-27  9:18       ` Kishon Vijay Abraham I
2019-11-27  9:48   ` Christoph Hellwig
2019-11-29 14:40     ` Vidya Sagar
2019-12-05  9:59       ` Vidya Sagar
2019-12-05 10:04   ` Kishon Vijay Abraham I
2020-01-03  9:40     ` Vidya Sagar
2019-11-13  9:08 ` Vidya Sagar [this message]
2019-11-27  8:18   ` [PATCH 2/4] PCI: endpoint: Add notification for core init completion Kishon Vijay Abraham I
2019-11-27  8:22     ` Kishon Vijay Abraham I
2019-11-13  9:08 ` [PATCH 3/4] PCI: dwc: Add API to notify core initialization completion Vidya Sagar
2019-11-13  9:08 ` [PATCH 4/4] PCI: pci-epf-test: Add support to defer core initialization Vidya Sagar
2019-11-27  9:20   ` Kishon Vijay Abraham I
2019-12-01 14:29     ` Vidya Sagar
2019-12-05 11:22       ` Kishon Vijay Abraham I
2020-01-03  9:40         ` Vidya Sagar
2019-11-18  6:55 ` [PATCH 0/4] " Vidya Sagar
2019-11-18 16:43   ` Jingoo Han
2019-11-25  4:33     ` Vidya Sagar
2019-11-25  4:45       ` Kishon Vijay Abraham I

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