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From: Gavin Shan <gwshan@linux.vnet.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: linux-pci@vger.kernel.org, benh@kernel.crashing.org,
	mpe@ellerman.id.au, alistair@popple.id.au, aik@ozlabs.ru,
	Gavin Shan <gwshan@linux.vnet.ibm.com>
Subject: [PATCH v10 12/18] powerpc/pci: Update bridge windows on PCI plug
Date: Fri, 20 May 2016 16:41:36 +1000	[thread overview]
Message-ID: <1463726502-14679-13-git-send-email-gwshan@linux.vnet.ibm.com> (raw)
In-Reply-To: <1463726502-14679-1-git-send-email-gwshan@linux.vnet.ibm.com>

On the PCI plugging event, PCI slot's subordinate devices are
scanned and their (IO and MMIO) resources are assigned. Platform
dependent resources (PE#, IO/MMIO/DMA windows) are allocated or
created on updating windows of the slot's upstream bridge.

This updates the windows of the hot plugged slot's upstream bridge
in pcibios_finish_adding_to_bus() so that the platform resources
(PE#, IO/MMIO/DMA segments) are allocated or created accordingly.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
---
 arch/powerpc/kernel/pci-common.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 40df3a5..be9e515 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -1444,8 +1444,12 @@ void pcibios_finish_adding_to_bus(struct pci_bus *bus)
 	/* Allocate bus and devices resources */
 	pcibios_allocate_bus_resources(bus);
 	pcibios_claim_one_bus(bus);
-	if (!pci_has_flag(PCI_PROBE_ONLY))
-		pci_assign_unassigned_bus_resources(bus);
+	if (!pci_has_flag(PCI_PROBE_ONLY)) {
+		if (bus->self)
+			pci_assign_unassigned_bridge_resources(bus->self);
+		else
+			pci_assign_unassigned_bus_resources(bus);
+	}
 
 	/* Fixup EEH */
 	eeh_add_device_tree_late(bus);
-- 
2.1.0


  parent reply	other threads:[~2016-05-20  6:43 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-20  6:41 [PATCH v10 00/18] powerpc/powernv: PCI hotplug support Gavin Shan
2016-05-20  6:41 ` [PATCH v10 01/18] PCI: Add pcibios_setup_bridge() Gavin Shan
2016-06-21 12:27   ` [v10,01/18] " Michael Ellerman
2016-05-20  6:41 ` [PATCH v10 02/18] powerpc/pci: Override pcibios_setup_bridge() Gavin Shan
2016-05-20  6:41 ` [PATCH v10 03/18] powerpc/powernv: Remove PCI_RESET_DELAY_US Gavin Shan
2016-06-01  2:35   ` Andrew Donnellan
2016-05-20  6:41 ` [PATCH v10 04/18] powerpc/powernv: Move pnv_pci_ioda_setup_opal_tce_kill() around Gavin Shan
2016-05-20  6:41 ` [PATCH v10 05/18] powerpc/powernv: Increase PE# capacity Gavin Shan
2016-05-20  6:41 ` [PATCH v10 06/18] powerpc/powernv: Allocate PE# in reverse order Gavin Shan
2016-05-20  6:41 ` [PATCH v10 07/18] powerpc/powernv: Create PEs in pcibios_setup_bridge() Gavin Shan
2016-05-20  6:41 ` [PATCH v10 08/18] powerpc/powernv: Setup PE for root bus Gavin Shan
2016-05-20  6:41 ` [PATCH v10 09/18] powerpc/powernv: Extend PCI bridge resources Gavin Shan
2016-06-08  3:47   ` Alexey Kardashevskiy
2016-06-10  4:33     ` Gavin Shan
2016-06-10  5:28       ` Alexey Kardashevskiy
2016-06-10  5:45         ` Benjamin Herrenschmidt
2016-06-10  6:37           ` Gavin Shan
2016-05-20  6:41 ` [PATCH v10 10/18] powerpc/powernv: Make pnv_ioda_deconfigure_pe() visible Gavin Shan
2016-05-20  6:41 ` [PATCH v10 11/18] powerpc/powernv: Dynamically release PE Gavin Shan
2016-05-20  6:41 ` Gavin Shan [this message]
2016-05-20  6:41 ` [PATCH v10 13/18] powerpc/pci: Delay populating pdn Gavin Shan
2016-06-23  0:59   ` Daniel Axtens
2016-06-23  1:34     ` Gavin Shan
2016-05-20  6:41 ` [PATCH v10 14/18] powerpc/powernv: Support PCI slot ID Gavin Shan
2016-05-20  6:41 ` [PATCH v10 15/18] powerpc/powernv: Use PCI slot reset infrastructure Gavin Shan
2016-05-20  6:41 ` [PATCH v10 16/18] powerpc/powernv: Introduce pnv_pci_get_slot_id() Gavin Shan
2016-05-20  6:41 ` [PATCH v10 17/18] powerpc/powernv: Functions to get/set PCI slot state Gavin Shan
2016-06-17 10:32   ` [v10,17/18] " Michael Ellerman
2016-06-18  3:18     ` Gavin Shan
2016-05-20  6:41 ` [PATCH v10 18/18] PCI/hotplug: PowerPC PowerNV PCI hotplug driver Gavin Shan

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