From: Taku Izumi <izumi.taku@jp.fujitsu.com>
To: linux-pci@vger.kernel.org
Cc: bhelgaas@google.com, linux-acpi@vger.kernel.org,
kaneshige.kenji@jp.fujitsu.com, jiang.liu@huawei.com,
Yinghai Lu <yinghai@kernel.org>
Subject: Re: [PATCH v3 8/8] ACPI, PCI: add resoruce-assign code for devices under hot-added hostbridge
Date: Fri, 28 Sep 2012 18:48:33 +0900 [thread overview]
Message-ID: <20120928184833.910cf605.izumi.taku@jp.fujitsu.com> (raw)
In-Reply-To: <CAE9FiQWujHz9D180Av8Vupdtu3Zqz2gKzv0FHW0PdpmJ3DM3sA@mail.gmail.com>
Devices under hot-added hostbridge have no chance to assign resources
and to configure them, so this patch adds such code for hot-added
hostbridges at acpi_pci_root_start().
diff: updated according to Yinhai's comment
disconnect dependency on CONFIG_HOTPLUG
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
---
drivers/acpi/pci_root.c | 13 +++++++++++++
include/acpi/acpi_bus.h | 1 +
2 files changed, 14 insertions(+)
Index: Bjorn-next-0925/drivers/acpi/pci_root.c
===================================================================
--- Bjorn-next-0925.orig/drivers/acpi/pci_root.c
+++ Bjorn-next-0925/drivers/acpi/pci_root.c
@@ -628,6 +628,9 @@ static int __devinit acpi_pci_root_add(s
if (device->wakeup.flags.run_wake)
device_set_run_wake(root->bus->bridge, true);
+ if (system_state != SYSTEM_BOOTING)
+ root->hot_added = true;
+
return 0;
out_del_root:
@@ -644,6 +647,16 @@ static int acpi_pci_root_start(struct ac
struct acpi_pci_root *root = acpi_driver_data(device);
struct acpi_pci_driver *driver;
+ /*
+ * Devices under hot-added hostbridge have no chance to assign
+ * resources and to configure them, so do that here
+ */
+ if (root->hot_added) {
+ pci_bus_size_bridges(root->bus);
+ pci_bus_assign_resources(root->bus);
+ pci_enable_bridges(root->bus);
+ }
+
mutex_lock(&acpi_pci_root_lock);
list_for_each_entry(driver, &acpi_pci_drivers, node)
if (driver->add)
Index: Bjorn-next-0925/include/acpi/acpi_bus.h
===================================================================
--- Bjorn-next-0925.orig/include/acpi/acpi_bus.h
+++ Bjorn-next-0925/include/acpi/acpi_bus.h
@@ -407,6 +407,7 @@ struct acpi_pci_root {
u32 osc_support_set; /* _OSC state of support bits */
u32 osc_control_set; /* _OSC state of control bits */
phys_addr_t mcfg_addr;
+ bool hot_added;
};
/* helper */
next prev parent reply other threads:[~2012-09-28 9:48 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-18 6:12 [PATCH v3 0/6] acpi,pci: hostbridge hotplug support Taku Izumi
2012-09-18 6:19 ` [PATCH v3 1/8] ACPI, PCI: Use normal list for struct acpi_pci_driver Taku Izumi
2012-09-18 6:20 ` [PATCH v3 2/8] ACPI, PCI: Notify acpi_pci_drivers when hot-plugging PCI root bridges Taku Izumi
2012-09-18 6:21 ` [PATCH v3 3/8] ACPI, PCI: add acpi_pci_drivers protection Taku Izumi
2012-09-18 6:22 ` [PATCH v3 4/8] ACPI, PCI: change acpi_pci_drivers' add/remove interface Taku Izumi
2012-09-19 22:46 ` Bjorn Helgaas
2012-09-20 10:15 ` Taku Izumi
2012-09-21 7:03 ` [PATCH] change signature of walk_root_bridge() function Taku Izumi
2012-09-21 13:24 ` Bjorn Helgaas
2012-09-18 6:23 ` [PATCH v3 5/8] ACPI, PCI: change acpi_pci_find_root implementation Taku Izumi
2012-09-19 22:03 ` Bjorn Helgaas
2012-09-21 7:14 ` Taku Izumi
2012-09-21 17:57 ` Bjorn Helgaas
2012-09-18 6:24 ` [PATCH v3 6/8] ACPI, PCI: add acpi_pci_roots protection Taku Izumi
2012-09-20 19:32 ` Bjorn Helgaas
2012-09-18 6:25 ` [PATCH v3 7/8] ACPI, PCI: add hostbridge removal function Taku Izumi
2012-09-21 20:09 ` Bjorn Helgaas
2012-09-27 16:48 ` Bjorn Helgaas
2012-09-27 17:23 ` Yinghai Lu
2012-09-27 17:59 ` Yinghai Lu
2012-09-27 18:44 ` Bjorn Helgaas
2012-09-27 20:17 ` Yinghai Lu
2012-09-28 16:07 ` Bjorn Helgaas
2012-09-28 16:19 ` Yinghai Lu
2012-09-28 19:44 ` Bjorn Helgaas
2012-09-28 0:15 ` Taku Izumi
2012-09-28 0:23 ` Bjorn Helgaas
2012-09-28 14:16 ` Bjorn Helgaas
2012-09-28 9:46 ` Taku Izumi
2012-10-30 4:02 ` Bjorn Helgaas
2012-10-30 17:42 ` Yinghai Lu
2012-10-30 17:42 ` [PATCH 1/8] PCI: Separate out pci_assign_unassigned_bus_resources() Yinghai Lu
2012-10-30 17:42 ` [PATCH 2/8] PCI: Move pci_rescan_bus() back to probe.c Yinghai Lu
2012-10-30 17:42 ` [PATCH 3/8] PCI: Move out pci_enable_bridges out of assign_unsigned_bus_res Yinghai Lu
2012-11-02 10:02 ` Taku Izumi
2012-11-02 14:56 ` Yinghai Lu
2012-10-30 17:42 ` [PATCH 4/8] PCI, ACPI: assign unassigned resource for hot add root bus Yinghai Lu
2012-10-30 17:42 ` [PATCH 5/8] PCI: Add pci_stop/remove_root_bus() Yinghai Lu
2012-10-30 17:42 ` [PATCH 6/8] PCI, ACPI: Make acpi_pci_root_remove stop/remove pci root bus Yinghai Lu
2012-10-30 17:42 ` [PATCH 7/8] PCI, ACPI: delete root bus prt during hot remove path Yinghai Lu
2012-10-30 17:42 ` [PATCH 8/8] PCI, ACPI: remove acpi_root_driver in reserse order Yinghai Lu
2012-11-02 0:17 ` Rafael J. Wysocki
2012-11-05 22:27 ` Re: Bjorn Helgaas
2012-11-05 22:49 ` Re: Yinghai Lu
2012-11-06 5:03 ` Taku Izumi
2012-10-31 8:26 ` [PATCH v3,RESEND 7/8] ACPI, PCI: add hostbridge removal function Taku Izumi
2012-10-31 8:27 ` [PATCH v3,RESEND 8/8] ACPI, PCI: add resoruce-assign code for devices under hot-added hostbridge Taku Izumi
2012-11-04 4:39 ` [PATCH 0/8] PCI, ACPI, x86: Reserve fw allocated resource for hot-add root bus Yinghai Lu
2012-11-04 4:39 ` [PATCH 1/8] PCI, x86: Separate out pcibios_allocate_bridge_resources() Yinghai Lu
2012-11-04 4:39 ` [PATCH 2/8] PCI, x86: Separate out pcibios_allocate_dev_resources() Yinghai Lu
2012-11-04 4:39 ` [PATCH 3/8] PCI, x86: Let pcibios_allocate_bus_resources() take bus instead Yinghai Lu
2012-11-04 4:39 ` [PATCH 4/8] PCI, x86: Separate out rom resource claim Yinghai Lu
2012-11-04 4:39 ` [PATCH 5/8] PCI, x86: Add pcibios_fw_addr_done Yinghai Lu
2012-11-04 4:39 ` [PATCH 6/8] PCI, x86: Remove __init for hw/fw allocated functions Yinghai Lu
2012-11-04 4:39 ` [PATCH 7/8] PCI, x86: Claim FW allocated resources in hot add path Yinghai Lu
2012-11-04 4:39 ` [PATCH 8/8] PCI, ACPI: reserve fw allocated resource for hot added root bus Yinghai Lu
2012-12-07 7:15 ` [PATCH 0/8] PCI, ACPI, x86: Reserve fw allocated resource for hot-add " Yinghai Lu
2013-01-07 23:49 ` Bjorn Helgaas
2013-01-08 17:57 ` Bjorn Helgaas
2013-01-08 18:27 ` Yinghai Lu
2013-01-09 17:35 ` Bjorn Helgaas
2013-01-09 17:53 ` Yinghai Lu
2013-01-09 18:39 ` Bjorn Helgaas
2013-01-09 19:01 ` Yinghai Lu
2013-01-09 20:10 ` Rafael J. Wysocki
2013-01-10 0:34 ` Bjorn Helgaas
2013-01-10 13:07 ` Rafael J. Wysocki
2013-01-10 14:49 ` Bjorn Helgaas
2013-01-09 20:59 ` Benjamin Herrenschmidt
2013-07-02 21:31 ` Bjorn Helgaas
2013-07-02 22:55 ` Yinghai Lu
2012-09-18 6:26 ` [PATCH v3 8/8] ACPI, PCI: add resoruce-assign code for devices under hot-added hostbridge Taku Izumi
2012-09-20 5:41 ` Yinghai Lu
2012-09-23 22:48 ` Yinghai Lu
2012-09-28 9:48 ` Taku Izumi [this message]
2012-09-18 18:41 ` [PATCH v3 0/6] acpi,pci: hostbridge hotplug support Yinghai Lu
2012-09-18 18:57 ` Yinghai Lu
2012-09-19 4:53 ` Taku Izumi
2012-09-20 6:19 ` Yinghai Lu
2012-09-19 0:50 ` Jiang Liu
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