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 V2 3/5] PCI: endpoint: Add notification for core init completion
Date: Fri, 3 Jan 2020 15:37:34 +0530 [thread overview]
Message-ID: <20200103100736.27627-4-vidyas@nvidia.com> (raw)
In-Reply-To: <20200103100736.27627-1-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>
---
V2:
* None
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 ec8d4d896564..31cdae7e2cdd 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
next prev parent reply other threads:[~2020-01-03 10:08 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-03 10:07 [PATCH V2 0/5] Add support to defer core initialization Vidya Sagar
2020-01-03 10:07 ` [PATCH V2 1/5] PCI: endpoint: Add core init notifying feature Vidya Sagar
2020-01-03 10:07 ` [PATCH V2 2/5] PCI: dwc: Refactor core initialization code for EP mode Vidya Sagar
2020-01-03 10:07 ` Vidya Sagar [this message]
2020-01-03 10:07 ` [PATCH V2 4/5] PCI: dwc: Add API to notify core initialization completion Vidya Sagar
2020-01-03 10:07 ` [PATCH V2 5/5] PCI: pci-epf-test: Add support to defer core initialization Vidya Sagar
2020-01-11 11:48 ` [PATCH V2 0/5] " Vidya Sagar
2020-01-23 9:24 ` Vidya Sagar
2020-01-23 9:55 ` Kishon Vijay Abraham I
2020-02-03 9:37 ` Vidya Sagar
2020-02-05 6:37 ` Kishon Vijay Abraham I
2020-02-19 13:36 ` Vidya Sagar
2020-02-20 16:00 ` Lorenzo Pieralisi
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