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From: Tomasz Nowicki <tomasz.nowicki@linaro.org>
To: bhelgaas@google.com, wangyijing@huawei.com, arnd@arndb.de,
	hanjun.guo@linaro.org, Liviu.Dudau@arm.com, tglx@linutronix.de,
	mingo@redhat.com, hpa@zytor.com, rjw@rjwysocki.net,
	al.stone@linaro.org
Cc: linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, x86@kernel.org,
	linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org,
	linaro-acpi@lists.linaro.org,
	Tomasz Nowicki <tomasz.nowicki@linaro.org>
Subject: [PATCH v3 5/9] pci, acpi, mcfg: Provide generic implementation of MCFG code initialization.
Date: Tue, 10 Mar 2015 12:35:16 +0100	[thread overview]
Message-ID: <1425987320-15020-6-git-send-email-tomasz.nowicki@linaro.org> (raw)
In-Reply-To: <1425987320-15020-1-git-send-email-tomasz.nowicki@linaro.org>

Those two functions are required by ACPI subsystem to make PCI config
space accessible. Generic code assume to do nothing for early init call but
late init call does as follow:
- parse MCFG table and add regions to ECAM resource list
- map regions
- add regions to iomem_resource

Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org>
---
 drivers/acpi/mcfg.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/acpi/mcfg.c b/drivers/acpi/mcfg.c
index a2e2326..1e646fc 100644
--- a/drivers/acpi/mcfg.c
+++ b/drivers/acpi/mcfg.c
@@ -79,3 +79,23 @@ int __init acpi_parse_mcfg(struct acpi_table_header *header)
 
 	return 0;
 }
+
+void __init __weak pci_mmcfg_early_init(void)
+{
+
+}
+
+void __init __weak pci_mmcfg_late_init(void)
+{
+	struct pci_mmcfg_region *cfg;
+
+	acpi_table_parse(ACPI_SIG_MCFG, acpi_parse_mcfg);
+
+	if (list_empty(&pci_mmcfg_list))
+		return;
+	if (!pci_mmcfg_arch_init())
+		free_all_mmcfg();
+
+	list_for_each_entry(cfg, &pci_mmcfg_list, list)
+		insert_resource(&iomem_resource, &cfg->res);
+}
-- 
1.9.1


  parent reply	other threads:[~2015-03-10 11:34 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-10 11:35 [PATCH v3 0/9] PCI: MMCONFIG clean up Tomasz Nowicki
2015-03-10 11:35 ` [PATCH v3 1/9] x86, pci: Clean up comment about buggy MMIO config space access for AMD Fam10h CPUs Tomasz Nowicki
2015-03-10 11:35 ` [PATCH v3 2/9] x86, pci: Abstract PCI config accessors and use AMD Fam10h workaround exclusively Tomasz Nowicki
2015-03-10 11:35 ` [PATCH v3 3/9] x86, pci: Reorder logic of pci_mmconfig_insert() function Tomasz Nowicki
2015-03-10 11:35 ` [PATCH v3 4/9] x86, pci, acpi: Move arch-agnostic MMCONFIG (aka ECAM) and ACPI code out of arch/x86/ directory Tomasz Nowicki
2015-03-13 16:35   ` Mark Salter
2015-03-16 14:38     ` Tomasz Nowicki
2015-03-10 11:35 ` Tomasz Nowicki [this message]
2015-03-10 11:35 ` [PATCH v3 6/9] x86, pci: mmconfig_{32,64}.c code refactoring - remove code duplication Tomasz Nowicki
2015-03-10 11:35 ` [PATCH v3 7/9] x86, pci, ecam: mmconfig_64.c becomes default implementation for ECAM driver Tomasz Nowicki
2015-03-10 11:35 ` [PATCH v3 8/9] pci, acpi, mcfg: Share ACPI PCI config space accessors Tomasz Nowicki
2015-03-10 11:35 ` [PATCH v3 9/9] pci, ecam: Improve naming for ecam.c content and areas where it is used Tomasz Nowicki
2015-03-10 12:22   ` Tomasz Nowicki
2015-03-10 12:25   ` Tomasz Nowicki

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