Commit 0ef22dcf authored by Vidya Sagar's avatar Vidya Sagar Committed by Lorenzo Pieralisi
Browse files

PCI: endpoint: Add notification for core init completion 



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

Signed-off-by: default avatarVidya Sagar <vidyas@nvidia.com>
Signed-off-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: default avatarKishon Vijay Abraham I <kishon@ti.com>
parent e966f739

drivers/pci/endpoint/pci-epc-core.c

+18 −1
Original line number Diff line number Diff line
@@ -540,10 +540,27 @@ 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

include/linux/pci-epc.h

+1 −0
Original line number Diff line number Diff line
@@ -165,6 +165,7 @@ 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);

include/linux/pci-epf.h

+5 −0
Original line number Diff line number Diff line
@@ -15,6 +15,11 @@ 


struct pci_epf;



enum pci_notify_event {

	CORE_INIT,

	LINK_UP,

};



enum pci_barno {

	BAR_0,

	BAR_1,