From: Sergey Miroshnichenko <s.miroshnichenko@yadro.com>
To: <linuxppc-dev@lists.ozlabs.org>
Cc: <linux@yadro.com>, Sergey Miroshnichenko <s.miroshnichenko@yadro.com>
Subject: [PATCH v3 4/6] powerpc/powernv/pci: Enable reassigning the bus numbers
Date: Tue, 11 Sep 2018 14:56:18 +0300 [thread overview]
Message-ID: <20180911115620.10507-5-s.miroshnichenko@yadro.com> (raw)
In-Reply-To: <20180911115620.10507-1-s.miroshnichenko@yadro.com>
PowerNV doesn't depend on PCIe topology info from DT anymore, and now
it is able to enumerate the fabric and assign the bus numbers.
This is enabled by the pci=realloc command line switch.
Signed-off-by: Sergey Miroshnichenko <s.miroshnichenko@yadro.com>
---
arch/powerpc/kernel/pci_dn.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/arch/powerpc/kernel/pci_dn.c b/arch/powerpc/kernel/pci_dn.c
index 8bcf10fb13ad..863d00561c50 100644
--- a/arch/powerpc/kernel/pci_dn.c
+++ b/arch/powerpc/kernel/pci_dn.c
@@ -592,3 +592,15 @@ static void pci_dev_pdn_setup(struct pci_dev *pdev)
pdev->dev.archdata.pci_data = pdn;
}
DECLARE_PCI_FIXUP_EARLY(PCI_ANY_ID, PCI_ANY_ID, pci_dev_pdn_setup);
+
+char * __init pcibios_setup(char *str)
+{
+ if (!strncmp(str, "realloc=", 8)) {
+ if (!strncmp(str + 8, "on", 2))
+ pci_add_flags(PCI_REASSIGN_ALL_BUS);
+ } else if (!strncmp(str, "realloc", 7)) {
+ pci_add_flags(PCI_REASSIGN_ALL_BUS);
+ }
+
+ return str;
+}
--
2.17.1
next prev parent reply other threads:[~2018-09-11 11:56 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-11 11:56 [PATCH v3 0/6] powerpc/powernv/pci: Discover surprise-hotplugged PCIe devices during rescan Sergey Miroshnichenko
2018-09-11 11:56 ` [PATCH v3 1/6] powerpc/pci: Access PCI config space directly w/o pci_dn Sergey Miroshnichenko
2018-09-11 11:56 ` [PATCH v3 2/6] powerpc/pci: Create pci_dn on demand Sergey Miroshnichenko
2018-09-11 11:56 ` [PATCH v3 3/6] powerpc/pci: Use DT to create pci_dn for root bridges only Sergey Miroshnichenko
2018-09-11 11:56 ` Sergey Miroshnichenko [this message]
2018-09-11 11:56 ` [PATCH v3 5/6] PCI/powerpc/eeh: Add pcibios hooks for preparing to rescan Sergey Miroshnichenko
2018-09-11 11:56 ` [PATCH v3 6/6] powerpc/pci: Reduce code duplication in pci_add_device_node_info Sergey Miroshnichenko
2018-09-12 9:49 ` [PATCH v3 0/6] powerpc/powernv/pci: Discover surprise-hotplugged PCIe devices during rescan Oliver
2018-09-14 20:42 ` Sergey Miroshnichenko
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