Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932089AbbHUGYi (ORCPT ); Fri, 21 Aug 2015 02:24:38 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:46930 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753703AbbHUGYe (ORCPT ); Fri, 21 Aug 2015 02:24:34 -0400 From: Yinghai Lu To: Bjorn Helgaas , David Miller , Benjamin Herrenschmidt , Wei Yang , TJ , Yijing Wang Cc: Andrew Morton , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Yinghai Lu Subject: [PATCH v4 37/52] PCI: Add has_mem64 for struct host_bridge Date: Thu, 20 Aug 2015 23:20:52 -0700 Message-Id: <1440138067-4314-38-git-send-email-yinghai@kernel.org> X-Mailer: git-send-email 1.8.4.5 In-Reply-To: <1440138067-4314-1-git-send-email-yinghai@kernel.org> References: <1440138067-4314-1-git-send-email-yinghai@kernel.org> X-Source-IP: aserv0022.oracle.com [141.146.126.234] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1800 Lines: 54 Add has_mem64 for struct host_bridge, on root bus that does not support mmio64 above 4g, will not set that. We will use that info next two following patches: 1. Don't treat non-pref mmio64 as pref mmio, so will not put it under bridge's pref range when rescan the devices 2. will keep pref mmio64 and pref mmio32 under bridge pref bar. Signed-off-by: Yinghai Lu --- drivers/pci/probe.c | 9 +++++++++ include/linux/pci.h | 1 + 2 files changed, 10 insertions(+) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 010d8d9..14bdbca 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -2051,6 +2051,15 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int bus, dev_info(&b->dev, "root bus resource %pR%s\n", res, bus_addr); } + resource_list_for_each_entry(window, &bridge->windows) { + res = window->res; + if (resource_type(res) == IORESOURCE_MEM && + (res->end - window->offset) > 0xffffffff) { + bridge->has_mem64 = 1; + break; + } + } + down_write(&pci_bus_sem); list_add_tail(&b->node, &pci_root_buses); up_write(&pci_bus_sem); diff --git a/include/linux/pci.h b/include/linux/pci.h index 33ef25f..0771b37 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -409,6 +409,7 @@ struct pci_host_bridge { void (*release_fn)(struct pci_host_bridge *); void *release_data; unsigned int ignore_reset_delay:1; /* for entire hierarchy */ + unsigned int has_mem64:1; }; #define to_pci_host_bridge(n) container_of(n, struct pci_host_bridge, dev) -- 1.8.4.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/