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From: Sergey Miroshnichenko <s.miroshnichenko@yadro.com>
To: <linuxppc-dev@lists.ozlabs.org>, <linux-pci@vger.kernel.org>
Cc: Oliver O'Halloran <oohall@gmail.com>,
	Stewart Smith <stewart@linux.vnet.ibm.com>,
	Alexey Kardashevskiy <aik@ozlabs.ru>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Russell Currey <ruscur@russell.cc>, <linux@yadro.com>,
	Sergey Miroshnichenko <s.miroshnichenko@yadro.com>
Subject: [PATCH v5 6/8] powerpc/pci: Don't rely on DT is the PCI_REASSIGN_ALL_BUS is set
Date: Mon, 11 Mar 2019 14:52:31 +0300
Message-ID: <20190311115233.6514-7-s.miroshnichenko@yadro.com> (raw)
In-Reply-To: <20190311115233.6514-1-s.miroshnichenko@yadro.com>

If supported by the platform, endpoint's pci_dn can be created dynamically,
without need to wait for DT updates from the firmware.

Signed-off-by: Sergey Miroshnichenko <s.miroshnichenko@yadro.com>
---
 arch/powerpc/kernel/pci_dn.c                 | 6 ++++--
 arch/powerpc/platforms/powernv/eeh-powernv.c | 2 +-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/kernel/pci_dn.c b/arch/powerpc/kernel/pci_dn.c
index 7fa362f8038d..17362a9b4678 100644
--- a/arch/powerpc/kernel/pci_dn.c
+++ b/arch/powerpc/kernel/pci_dn.c
@@ -555,8 +555,10 @@ void pci_devs_phb_init_dynamic(struct pci_controller *phb)
 		phb->pci_data = pdn;
 	}
 
-	/* Update dn->phb ptrs for new phb and children devices */
-	pci_traverse_device_nodes(dn, add_pdn, phb);
+	if (!pci_has_flag(PCI_REASSIGN_ALL_BUS)) {
+		/* Update dn->phb ptrs for new phb and children devices */
+		pci_traverse_device_nodes(dn, add_pdn, phb);
+	}
 }
 
 /** 
diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c
index f38078976c5d..40feff2653a0 100644
--- a/arch/powerpc/platforms/powernv/eeh-powernv.c
+++ b/arch/powerpc/platforms/powernv/eeh-powernv.c
@@ -47,7 +47,7 @@ void pnv_pcibios_bus_add_device(struct pci_dev *pdev)
 {
 	struct pci_dn *pdn = pci_get_pdn(pdev);
 
-	if (!pdev->is_virtfn)
+	if (!pci_has_flag(PCI_REASSIGN_ALL_BUS) && !pdev->is_virtfn)
 		return;
 
 	/*
-- 
2.20.1


  parent reply index

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-11 11:52 [PATCH v5 0/8] powerpc/powernv/pci: Make hotplug self-sufficient, independent of FW and DT Sergey Miroshnichenko
2019-03-11 11:52 ` [PATCH v5 1/8] powerpc/pci: Access PCI config space directly w/o pci_dn Sergey Miroshnichenko
2019-04-30  4:22   ` Oliver
2019-03-11 11:52 ` [PATCH v5 2/8] powerpc/powernv/pci: Suppress an EEH error when reading an empty slot Sergey Miroshnichenko
2019-04-30  4:26   ` Oliver
2019-03-11 11:52 ` [PATCH v5 3/8] powerpc/pci: Create pci_dn on demand Sergey Miroshnichenko
2019-03-11 11:52 ` [PATCH v5 4/8] powerpc/pci: Reduce code duplication in pci_add_device_node_info Sergey Miroshnichenko
2019-03-11 11:52 ` [PATCH v5 5/8] powerpc/pci/IOV: Add support for runtime enabling the VFs Sergey Miroshnichenko
2019-04-30  6:00   ` Oliver O'Halloran
2019-05-14 14:44     ` Sergey Miroshnichenko
2019-03-11 11:52 ` Sergey Miroshnichenko [this message]
2019-03-11 11:52 ` [PATCH v5 7/8] powerpc/powernv/pci: Hook up the writes to PCI_SECONDARY_BUS register Sergey Miroshnichenko
2019-03-11 11:52 ` [PATCH v5 8/8] powerpc/powernv/pci: Enable reassigning the bus numbers Sergey Miroshnichenko
2019-03-27 14:10 ` [PATCH v5 0/8] powerpc/powernv/pci: Make hotplug self-sufficient, independent of FW and DT Bjorn Helgaas
2019-03-28 12:44   ` Oliver

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