From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tomasz Nowicki Subject: [PATCH V3 03/21] pci, acpi, mcfg: Provide generic implementation of MCFG code initialization. Date: Wed, 13 Jan 2016 14:20:49 +0100 Message-ID: <1452691267-32240-4-git-send-email-tn@semihalf.com> References: <1452691267-32240-1-git-send-email-tn@semihalf.com> Return-path: In-Reply-To: <1452691267-32240-1-git-send-email-tn@semihalf.com> Sender: linux-kernel-owner@vger.kernel.org To: bhelgaas@google.com, arnd@arndb.de, will.deacon@arm.com, catalin.marinas@arm.com, rjw@rjwysocki.net, hanjun.guo@linaro.org, Lorenzo.Pieralisi@arm.com, okaya@codeaurora.org, jiang.liu@linux.intel.com, Stefano.Stabellini@eu.citrix.com Cc: robert.richter@caviumnetworks.com, mw@semihalf.com, Liviu.Dudau@arm.com, ddaney@caviumnetworks.com, tglx@linutronix.de, wangyijing@huawei.com, Suravee.Suthikulpanit@amd.com, msalter@redhat.com, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linaro-acpi@lists.linaro.org, jchandra@broadcom.com, jcm@redhat.com, Tomasz Nowicki List-Id: linux-acpi@vger.kernel.org First function acpi_mcfg_check_entry() does not apply any quirks by default. Last 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 Tested-by: Suravee Suthikulpanit Tested-by: Jeremy Linton --- drivers/acpi/mcfg.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/acpi/mcfg.c b/drivers/acpi/mcfg.c index 5ecef20..fad9917 100644 --- a/drivers/acpi/mcfg.c +++ b/drivers/acpi/mcfg.c @@ -57,3 +57,29 @@ int __init acpi_parse_mcfg(struct acpi_table_header *header) return 0; } + +int __init __weak acpi_mcfg_check_entry(struct acpi_table_mcfg *mcfg, + struct acpi_mcfg_allocation *cfg) +{ + 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 From mboxrd@z Thu Jan 1 00:00:00 1970 From: tn@semihalf.com (Tomasz Nowicki) Date: Wed, 13 Jan 2016 14:20:49 +0100 Subject: [PATCH V3 03/21] pci, acpi, mcfg: Provide generic implementation of MCFG code initialization. In-Reply-To: <1452691267-32240-1-git-send-email-tn@semihalf.com> References: <1452691267-32240-1-git-send-email-tn@semihalf.com> Message-ID: <1452691267-32240-4-git-send-email-tn@semihalf.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org First function acpi_mcfg_check_entry() does not apply any quirks by default. Last 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 Tested-by: Suravee Suthikulpanit Tested-by: Jeremy Linton --- drivers/acpi/mcfg.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/acpi/mcfg.c b/drivers/acpi/mcfg.c index 5ecef20..fad9917 100644 --- a/drivers/acpi/mcfg.c +++ b/drivers/acpi/mcfg.c @@ -57,3 +57,29 @@ int __init acpi_parse_mcfg(struct acpi_table_header *header) return 0; } + +int __init __weak acpi_mcfg_check_entry(struct acpi_table_mcfg *mcfg, + struct acpi_mcfg_allocation *cfg) +{ + 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