From: Yinghai Lu <yinghai@kernel.org>
To: Jesse Barnes <jbarnes@virtuousgeek.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Tony Luck <tony.luck@intel.com>,
David Miller <davem@davemloft.net>, x86 <x86@kernel.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>,
Dominik Brodowski <linux@dominikbrodowski.net>,
Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arch@vger.kernel.org, Yinghai Lu <yinghai@kernel.org>
Subject: [PATCH 04/24] PCI: Add busn_res operation functions
Date: Tue, 28 Feb 2012 14:07:23 -0800 [thread overview]
Message-ID: <1330466863-28469-5-git-send-email-yinghai@kernel.org> (raw)
Message-ID: <20120228220723.MPlfQW-NnMMQBULdOsDxYszzc4wrQCkF42Q1qD7iU2M@z> (raw)
In-Reply-To: <1330466863-28469-1-git-send-email-yinghai@kernel.org>
will use them insert/update busn res in pci_bus
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
drivers/pci/probe.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
include/linux/pci.h | 3 +++
2 files changed, 53 insertions(+), 0 deletions(-)
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 675d7ed..ed82369 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1678,6 +1678,56 @@ err_out:
return NULL;
}
+void pci_bus_insert_busn_res(struct pci_bus *b, int bus, int bus_max)
+{
+ struct resource *res = &b->busn_res;
+ struct resource *parent_res;
+ int ret;
+
+ res->start = bus;
+ res->end = bus_max;
+ res->flags = IORESOURCE_BUS;
+
+ /* no parent for root bus' busn_res */
+ if (!pci_is_root_bus(b)) {
+ parent_res = &b->parent->busn_res;
+
+ ret = insert_resource(parent_res, res);
+
+ dev_printk(KERN_DEBUG, &b->dev,
+ "busn_res: %pR %s inserted under %pR\n",
+ res, ret ? "can not be" : "is", parent_res);
+ } else
+ dev_printk(KERN_DEBUG, &b->dev,
+ "busn_res: %pR for root bus\n",
+ res);
+}
+
+void pci_bus_update_busn_res_end(struct pci_bus *b, int bus_max)
+{
+ struct resource *res = &b->busn_res;
+ struct resource old_res = *res;
+
+ res->end = bus_max;
+ dev_printk(KERN_DEBUG, &b->dev,
+ "busn_res: %pR end updated to %pR\n",
+ &old_res, res);
+}
+
+void pci_bus_release_busn_res(struct pci_bus *b)
+{
+ struct resource *res = &b->busn_res;
+ int ret;
+
+ if (!res->flags)
+ return;
+
+ ret = release_resource(res);
+ dev_printk(KERN_DEBUG, &b->dev,
+ "busn_res: %pR %s released\n",
+ res, ret ? "can not be" : "is");
+}
+
struct pci_bus * __devinit pci_scan_root_bus(struct device *parent, int bus,
struct pci_ops *ops, void *sysdata, struct list_head *resources)
{
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 7c03852..e494759 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -669,6 +669,9 @@ struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata);
struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
struct pci_ops *ops, void *sysdata,
struct list_head *resources);
+void pci_bus_insert_busn_res(struct pci_bus *b, int bus, int busmax);
+void pci_bus_update_busn_res_end(struct pci_bus *b, int busmax);
+void pci_bus_release_busn_res(struct pci_bus *b);
struct pci_bus * __devinit pci_scan_root_bus(struct device *parent, int bus,
struct pci_ops *ops, void *sysdata,
struct list_head *resources);
--
1.7.7
next prev parent reply other threads:[~2012-02-28 22:09 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-28 22:07 [PATCH -v9 00/24] PCI: allocate pci bus num range for unassigned bridge busn Yinghai Lu
2012-02-28 22:07 ` Yinghai Lu
2012-02-28 22:07 ` [PATCH 01/24] x86, PCI: add print all root info for nocrs path Yinghai Lu
2012-02-28 22:07 ` [PATCH 02/24] x86, PCI: Merge pcibios_scan_root and pci_scan_bus_on_node Yinghai Lu
2012-02-28 22:07 ` Yinghai Lu
2012-02-28 22:07 ` [PATCH 03/24] PCI: Add busn_res into struct pci_bus Yinghai Lu
2012-02-28 22:07 ` Yinghai Lu [this message]
2012-02-28 22:07 ` [PATCH 04/24] PCI: Add busn_res operation functions Yinghai Lu
2012-02-28 22:07 ` [PATCH 05/24] PCI: release busn when removing bus Yinghai Lu
2012-02-28 22:07 ` Yinghai Lu
2012-02-28 22:07 ` [PATCH 06/24] PCI: insert busn_res in pci_create_root_bus Yinghai Lu
2012-02-28 22:07 ` Yinghai Lu
2012-02-28 22:07 ` [PATCH 07/24] PCI: checking busn_res in pci_scan_root_bus Yinghai Lu
2012-02-28 22:07 ` Yinghai Lu
2012-02-28 22:07 ` [PATCH 08/24] PCI: default busn_resource Yinghai Lu
2012-02-28 22:07 ` Yinghai Lu
2012-02-28 22:07 ` [PATCH 09/24] PCI: add default res for pci_scan_bus Yinghai Lu
2012-02-28 22:07 ` Yinghai Lu
2012-02-28 22:07 ` [PATCH 10/24] x86, PCI: put busn resource in pci_root_info for acpi path Yinghai Lu
2012-02-28 22:07 ` Yinghai Lu
2012-02-28 22:07 ` [PATCH 11/24] x86, PCI: put busn resource in pci_root_info for no_crs path Yinghai Lu
2012-02-28 22:07 ` Yinghai Lu
2012-02-28 22:07 ` [PATCH 12/24] PCI, ia64: Register busn_res for root buses Yinghai Lu
2012-02-28 22:07 ` Yinghai Lu
2012-02-29 0:01 ` Bjorn Helgaas
2012-02-29 0:01 ` Bjorn Helgaas
2012-02-29 0:12 ` Yinghai Lu
2012-02-29 0:12 ` Yinghai Lu
2012-02-29 0:22 ` Bjorn Helgaas
2012-02-29 4:26 ` Yinghai Lu
2012-02-28 22:07 ` [PATCH 13/24] PCI, sparc: " Yinghai Lu
2012-02-28 22:07 ` Yinghai Lu
2012-02-28 22:07 ` [PATCH 14/24] PCI, powerpc: " Yinghai Lu
2012-02-28 22:07 ` Yinghai Lu
2012-02-28 22:07 ` [PATCH 15/24] PCI, parisc: " Yinghai Lu
2012-02-28 22:07 ` Yinghai Lu
2012-02-28 22:07 ` [PATCH 16/24] PCI: Add pci_bus_extend/shrink_top() Yinghai Lu
2012-02-28 22:07 ` Yinghai Lu
2012-02-28 22:07 ` [PATCH 17/24] PCI: Probe safe range that we can use for unassigned bridge Yinghai Lu
2012-02-28 22:07 ` Yinghai Lu
2012-02-28 22:07 ` [PATCH 18/24] PCI: Strict checking of valid range for bridge Yinghai Lu
2012-02-28 22:07 ` [PATCH 19/24] PCI: Allocate bus range instead of use max blindly Yinghai Lu
2012-02-28 22:07 ` Yinghai Lu
2012-02-28 22:07 ` [PATCH 20/24] PCI: kill pci_fixup_parent_subordinate_busnr() Yinghai Lu
2012-02-28 22:07 ` Yinghai Lu
2012-02-28 22:07 ` [PATCH 21/24] PCI: Seperate child bus scanning to two passes overall Yinghai Lu
2012-02-28 22:07 ` [PATCH 22/24] pcmcia: remove workaround for fixing pci parent bus subordinate Yinghai Lu
2012-02-28 22:07 ` Yinghai Lu
2012-02-28 22:07 ` [PATCH 23/24] PCI: Double checking setting for bus register and bus struct Yinghai Lu
2012-02-28 22:07 ` [PATCH 24/24] PCI, pciehp: Remove not needed bus number range checking Yinghai Lu
2012-02-28 22:07 ` Yinghai Lu
-- strict thread matches above, loose matches on Subject: below --
2012-02-05 6:57 [PATCH -v5 0/24] PCI: allocate pci bus num range for unassigned bridge busn + pci rescan cleanup Yinghai Lu
2012-02-05 6:57 ` [PATCH 04/24] PCI: Add busn_res operation functions Yinghai Lu
2012-02-05 6:57 ` Yinghai Lu
2012-02-06 18:59 ` Bjorn Helgaas
2012-02-06 18:59 ` Bjorn Helgaas
2012-02-06 20:45 ` Yinghai Lu
2012-02-12 23:51 ` Bjorn Helgaas
2012-02-12 23:51 ` Bjorn Helgaas
2012-02-13 0:03 ` Yinghai Lu
2012-02-13 0:03 ` Yinghai Lu
2012-02-13 0:11 ` Bjorn Helgaas
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