From patchwork Wed Sep 16 21:57:39 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yinghai Lu X-Patchwork-Id: 518608 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 54D7C1402C2 for ; Thu, 17 Sep 2015 08:06:17 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753657AbbIPWFp (ORCPT ); Wed, 16 Sep 2015 18:05:45 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:50681 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754094AbbIPWD5 (ORCPT ); Wed, 16 Sep 2015 18:03:57 -0400 Received: from userv0022.oracle.com (userv0022.oracle.com [156.151.31.74]) by userp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id t8GLwcWm021570 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 16 Sep 2015 21:58:39 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by userv0022.oracle.com (8.13.8/8.13.8) with ESMTP id t8GLwcjU029410 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL); Wed, 16 Sep 2015 21:58:38 GMT Received: from abhmp0019.oracle.com (abhmp0019.oracle.com [141.146.116.25]) by userv0122.oracle.com (8.13.8/8.13.8) with ESMTP id t8GLwcw7002039; Wed, 16 Sep 2015 21:58:38 GMT Received: from linux-siqj.site (/10.132.127.48) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 16 Sep 2015 14:58:38 -0700 From: Yinghai Lu To: Bjorn Helgaas , David Miller , Benjamin Herrenschmidt , Wei Yang , TJ , Yijing Wang Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Yinghai Lu Subject: [PATCH v5 41/53] sparc/PCI: Add mem64 resource parsing for root bus Date: Wed, 16 Sep 2015 14:57:39 -0700 Message-Id: <1442440671-5361-42-git-send-email-yinghai@kernel.org> X-Mailer: git-send-email 1.8.4.5 In-Reply-To: <1442440671-5361-1-git-send-email-yinghai@kernel.org> References: <1442440671-5361-1-git-send-email-yinghai@kernel.org> X-Source-IP: userv0022.oracle.com [156.151.31.74] Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Found "no compatible bridge window" warning in boot log from T5-8. pci 0000:00:01.0: can't claim BAR 15 [mem 0x100000000-0x4afffffff pref]: no compatible bridge window That resource is above 4G, but does not get offset correctly as root bus only report io and mem32. pci_sun4v f02dbcfc: PCI host bridge to bus 0000:00 pci_bus 0000:00: root bus resource [io 0x804000000000-0x80400fffffff] (bus address [0x0000-0xfffffff]) pci_bus 0000:00: root bus resource [mem 0x800000000000-0x80007effffff] (bus address [0x00000000-0x7effffff]) pci_bus 0000:00: root bus resource [bus 00-77] Add mem64 handling in pci_common for sparc, so we can have 64bit resource registered for root bus at first. After patch, will have: pci_sun4v f02dbcfc: PCI host bridge to bus 0000:00 pci_bus 0000:00: root bus resource [io 0x804000000000-0x80400fffffff] (bus address [0x0000-0xfffffff]) pci_bus 0000:00: root bus resource [mem 0x800000000000-0x80007effffff] (bus address [0x00000000-0x7effffff]) pci_bus 0000:00: root bus resource [mem 0x800100000000-0x8007ffffffff] (bus address [0x100000000-0x7ffffffff]) pci_bus 0000:00: root bus resource [bus 00-77] -v2: mem64_space should use mem_space.start as offset. -v3: add IORESOURCE_MEM_64 flag Fixes: commit d63e2e1f3df9 ("sparc/PCI: Clip bridge windows to fit in upstream windows") Link: http://lkml.kernel.org/r/CAE9FiQU1gJY1LYrxs+ma5LCTEEe4xmtjRG0aXJ9K_Tsu+m9Wuw@mail.gmail.com Reported-by: David Ahern Tested-by: David Ahern Signed-off-by: Yinghai Lu arch/sparc/kernel/pci.c | 7 ++++++- arch/sparc/kernel/pci_common.c | 15 +++++++++++++-- arch/sparc/kernel/pci_impl.h | 1 + 3 files changed, 20 insertions(+), 3 deletions(-) --- arch/sparc/kernel/pci.c | 7 ++++++- arch/sparc/kernel/pci_common.c | 15 +++++++++++++-- arch/sparc/kernel/pci_impl.h | 1 + 3 files changed, 20 insertions(+), 3 deletions(-) diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c index b91d7f1..badf095 100644 --- a/arch/sparc/kernel/pci.c +++ b/arch/sparc/kernel/pci.c @@ -185,8 +185,10 @@ static unsigned long pci_parse_of_flags(u32 addr0) if (addr0 & 0x02000000) { flags = IORESOURCE_MEM | PCI_BASE_ADDRESS_SPACE_MEMORY; - flags |= (addr0 >> 22) & PCI_BASE_ADDRESS_MEM_TYPE_64; flags |= (addr0 >> 28) & PCI_BASE_ADDRESS_MEM_TYPE_1M; + if (addr0 & 0x01000000) + flags |= IORESOURCE_MEM_64 + | PCI_BASE_ADDRESS_MEM_TYPE_64; if (addr0 & 0x40000000) flags |= IORESOURCE_PREFETCH | PCI_BASE_ADDRESS_MEM_PREFETCH; @@ -655,6 +657,9 @@ struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm, pbm->io_space.start); pci_add_resource_offset(&resources, &pbm->mem_space, pbm->mem_space.start); + if (pbm->mem64_space.flags) + pci_add_resource_offset(&resources, &pbm->mem64_space, + pbm->mem_space.start); pbm->busn.start = pbm->pci_first_busno; pbm->busn.end = pbm->pci_last_busno; pbm->busn.flags = IORESOURCE_BUS; diff --git a/arch/sparc/kernel/pci_common.c b/arch/sparc/kernel/pci_common.c index 944a065..a859a86 100644 --- a/arch/sparc/kernel/pci_common.c +++ b/arch/sparc/kernel/pci_common.c @@ -406,6 +406,7 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm) } num_pbm_ranges = i / sizeof(*pbm_ranges); + memset(&pbm->mem64_space, 0, sizeof(struct resource)); for (i = 0; i < num_pbm_ranges; i++) { const struct linux_prom_pci_ranges *pr = &pbm_ranges[i]; @@ -451,7 +452,11 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm) break; case 3: - /* XXX 64-bit MEM handling XXX */ + /* 64-bit MEM handling */ + pbm->mem64_space.start = a; + pbm->mem64_space.end = a + size - 1UL; + pbm->mem64_space.flags = IORESOURCE_MEM; + break; default: break; @@ -465,15 +470,21 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm) prom_halt(); } - printk("%s: PCI IO[%llx] MEM[%llx]\n", + printk("%s: PCI IO[%llx] MEM[%llx]", pbm->name, pbm->io_space.start, pbm->mem_space.start); + if (pbm->mem64_space.flags) + printk(" MEM64[%llx]", + pbm->mem64_space.start); + printk("\n"); pbm->io_space.name = pbm->mem_space.name = pbm->name; request_resource(&ioport_resource, &pbm->io_space); request_resource(&iomem_resource, &pbm->mem_space); + if (pbm->mem64_space.flags) + request_resource(&iomem_resource, &pbm->mem64_space); pci_register_legacy_regions(&pbm->io_space, &pbm->mem_space); diff --git a/arch/sparc/kernel/pci_impl.h b/arch/sparc/kernel/pci_impl.h index 75803c7..37222ca 100644 --- a/arch/sparc/kernel/pci_impl.h +++ b/arch/sparc/kernel/pci_impl.h @@ -97,6 +97,7 @@ struct pci_pbm_info { /* PBM I/O and Memory space resources. */ struct resource io_space; struct resource mem_space; + struct resource mem64_space; struct resource busn; /* Base of PCI Config space, can be per-PBM or shared. */