From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Yinghai Lu To: Jesse Barnes , Benjamin Herrenschmidt , Tony Luck Cc: Bjorn Helgaas , Linus Torvalds , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, Yinghai Lu Subject: [PATCH 02/13] PCI: Add busn_res operation functions Date: Fri, 27 Jan 2012 18:49:20 -0800 Message-Id: <1327718971-9598-3-git-send-email-yinghai@kernel.org> In-Reply-To: <1327718971-9598-1-git-send-email-yinghai@kernel.org> References: <1327718971-9598-1-git-send-email-yinghai@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: will use them insert/update busn res in pci_bus Signed-off-by: Yinghai Lu --- drivers/pci/probe.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ include/linux/pci.h | 3 +++ 2 files changed, 47 insertions(+), 0 deletions(-) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index a114173..71261da 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -1622,6 +1622,50 @@ 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 = &iobusn_resource; + int ret; + + res->start = (pci_domain_nr(b) << 8) | bus; + res->end = (pci_domain_nr(b) << 8) | bus_max; + res->flags = IORESOURCE_BUS; + + 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: %06llx-%06llx %s inserted under %06llx-%06llx\n", + (unsigned long long)res->start, + (unsigned long long)res->end, + ret ? "can not be" : "is", + (unsigned long long)parent_res->start, + (unsigned long long)parent_res->end); +} + +void pci_bus_update_busn_res_end(struct pci_bus *b, int bus_max) +{ + struct resource *res = &b->busn_res; + unsigned long long old_end = res->end; + + res->end &= ~0xff; + res->end |= bus_max; + dev_printk(KERN_DEBUG, &b->dev, + "busn_res: %06llx-%06llx end updated to %06llx-%06llx\n", + (unsigned long long)res->start, + old_end, + (unsigned long long)res->start, + (unsigned long long)res->end); +} + +void pci_bus_release_busn_res(struct pci_bus *b) +{ + release_resource(&b->busn_res); +} + 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 94ad468..3da935c 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -665,6 +665,9 @@ 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