From patchwork Wed Sep 22 11:34:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rahul Singh X-Patchwork-Id: 12510321 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D8F74C433F5 for ; Wed, 22 Sep 2021 11:35:57 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 95C07608FB for ; Wed, 22 Sep 2021 11:35:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 95C07608FB Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.192517.343004 (Exim 4.92) (envelope-from ) id 1mT0XW-0004EW-QP; Wed, 22 Sep 2021 11:35:50 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 192517.343004; Wed, 22 Sep 2021 11:35:50 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mT0XW-0004EL-N0; Wed, 22 Sep 2021 11:35:50 +0000 Received: by outflank-mailman (input) for mailman id 192517; Wed, 22 Sep 2021 11:35:49 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mT0XV-0004D6-38 for xen-devel@lists.xenproject.org; Wed, 22 Sep 2021 11:35:49 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTP id 3aaef6c8-1b99-11ec-b970-12813bfff9fa; Wed, 22 Sep 2021 11:35:47 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id BB93A11B3; Wed, 22 Sep 2021 04:35:46 -0700 (PDT) Received: from e109506.cambridge.arm.com (e109506.cambridge.arm.com [10.1.199.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id BE5783F719; Wed, 22 Sep 2021 04:35:44 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 3aaef6c8-1b99-11ec-b970-12813bfff9fa From: Rahul Singh To: xen-devel@lists.xenproject.org Cc: bertrand.marquis@arm.com, rahul.singh@arm.com, andre.przywara@arm.com, Jan Beulich , Andrew Cooper , =?utf-8?q?Roger_Pau_Monn=C3=A9?= , Wei Liu , George Dunlap , Ian Jackson , Julien Grall , Stefano Stabellini , Paul Durrant , Daniel De Graaf , "Daniel P. Smith" Subject: [PATCH v2 01/17] xen/pci: Refactor MSI code that implements MSI functionality within XEN Date: Wed, 22 Sep 2021 12:34:47 +0100 Message-Id: <27a7c53a862c0c8dcbe4ecef203d5efeee5746a8.1632307952.git.rahul.singh@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: On Arm, the initial plan is to only support GICv3 ITS which doesn't require us to manage the MSIs because the HW will protect against spoofing. Move the code under CONFIG_HAS_PCI_MSI flag to gate the code for ARM. No functional change intended. Signed-off-by: Rahul Singh Reviewed-by: Daniel P. Smith --- Change in v2: Fixed minor comments --- xen/arch/x86/Kconfig | 1 + xen/drivers/passthrough/Makefile | 1 + xen/drivers/passthrough/msi.c | 83 ++++++++++++++++++++++++++++++++ xen/drivers/passthrough/pci.c | 54 +++++---------------- xen/drivers/pci/Kconfig | 4 ++ xen/include/xen/msi.h | 43 +++++++++++++++++ xen/xsm/flask/hooks.c | 8 +-- 7 files changed, 149 insertions(+), 45 deletions(-) create mode 100644 xen/drivers/passthrough/msi.c create mode 100644 xen/include/xen/msi.h diff --git a/xen/arch/x86/Kconfig b/xen/arch/x86/Kconfig index 1f83518ee0..b4abfca46f 100644 --- a/xen/arch/x86/Kconfig +++ b/xen/arch/x86/Kconfig @@ -20,6 +20,7 @@ config X86 select HAS_NS16550 select HAS_PASSTHROUGH select HAS_PCI + select HAS_PCI_MSI select HAS_PDX select HAS_SCHED_GRANULARITY select HAS_UBSAN diff --git a/xen/drivers/passthrough/Makefile b/xen/drivers/passthrough/Makefile index 445690e3e5..a5efa22714 100644 --- a/xen/drivers/passthrough/Makefile +++ b/xen/drivers/passthrough/Makefile @@ -7,3 +7,4 @@ obj-y += iommu.o obj-$(CONFIG_HAS_PCI) += pci.o obj-$(CONFIG_HAS_DEVICE_TREE) += device_tree.o obj-$(CONFIG_HAS_PCI) += ats.o +obj-$(CONFIG_HAS_PCI_MSI) += msi.o diff --git a/xen/drivers/passthrough/msi.c b/xen/drivers/passthrough/msi.c new file mode 100644 index 0000000000..ce1a450f6f --- /dev/null +++ b/xen/drivers/passthrough/msi.c @@ -0,0 +1,83 @@ +#include +#include +#include +#include + +int pdev_msix_assign(struct domain *d, struct pci_dev *pdev) +{ + int rc; + + if ( pdev->msix ) + { + rc = pci_reset_msix_state(pdev); + if ( rc ) + return rc; + msixtbl_init(d); + } + + return 0; +} + +int pdev_msi_init(struct pci_dev *pdev) +{ + unsigned int pos; + + INIT_LIST_HEAD(&pdev->msi_list); + + pos = pci_find_cap_offset(pdev->seg, pdev->bus, PCI_SLOT(pdev->devfn), + PCI_FUNC(pdev->devfn), PCI_CAP_ID_MSI); + if ( pos ) + { + uint16_t ctrl = pci_conf_read16(pdev->sbdf, msi_control_reg(pos)); + + pdev->msi_maxvec = multi_msi_capable(ctrl); + } + + pos = pci_find_cap_offset(pdev->seg, pdev->bus, PCI_SLOT(pdev->devfn), + PCI_FUNC(pdev->devfn), PCI_CAP_ID_MSIX); + if ( pos ) + { + struct arch_msix *msix = xzalloc(struct arch_msix); + uint16_t ctrl; + + if ( !msix ) + return -ENOMEM; + + spin_lock_init(&msix->table_lock); + + ctrl = pci_conf_read16(pdev->sbdf, msix_control_reg(pos)); + msix->nr_entries = msix_table_size(ctrl); + + pdev->msix = msix; + } + + return 0; +} + +void pdev_msi_deinit(struct pci_dev *pdev) +{ + XFREE(pdev->msix); +} + +void pdev_dump_msi(const struct pci_dev *pdev) +{ + const struct msi_desc *msi; + + if ( list_empty(&pdev->msi_list) ) + return; + + printk(" - MSIs < "); + list_for_each_entry ( msi, &pdev->msi_list, list ) + printk("%d ", msi->irq); + printk(">"); +} + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * tab-width: 4 + * indent-tabs-mode: nil + * End: + */ diff --git a/xen/drivers/passthrough/pci.c b/xen/drivers/passthrough/pci.c index fc4fa2e5c3..8996403161 100644 --- a/xen/drivers/passthrough/pci.c +++ b/xen/drivers/passthrough/pci.c @@ -32,8 +32,8 @@ #include #include #include +#include #include -#include #include "ats.h" struct pci_seg { @@ -314,6 +314,7 @@ static struct pci_dev *alloc_pdev(struct pci_seg *pseg, u8 bus, u8 devfn) { struct pci_dev *pdev; unsigned int pos; + int rc; list_for_each_entry ( pdev, &pseg->alldevs_list, alldevs_list ) if ( pdev->bus == bus && pdev->devfn == devfn ) @@ -327,35 +328,12 @@ static struct pci_dev *alloc_pdev(struct pci_seg *pseg, u8 bus, u8 devfn) *((u8*) &pdev->bus) = bus; *((u8*) &pdev->devfn) = devfn; pdev->domain = NULL; - INIT_LIST_HEAD(&pdev->msi_list); - - pos = pci_find_cap_offset(pseg->nr, bus, PCI_SLOT(devfn), PCI_FUNC(devfn), - PCI_CAP_ID_MSI); - if ( pos ) - { - uint16_t ctrl = pci_conf_read16(pdev->sbdf, msi_control_reg(pos)); - - pdev->msi_maxvec = multi_msi_capable(ctrl); - } - pos = pci_find_cap_offset(pseg->nr, bus, PCI_SLOT(devfn), PCI_FUNC(devfn), - PCI_CAP_ID_MSIX); - if ( pos ) + rc = pdev_msi_init(pdev); + if ( rc ) { - struct arch_msix *msix = xzalloc(struct arch_msix); - uint16_t ctrl; - - if ( !msix ) - { - xfree(pdev); - return NULL; - } - spin_lock_init(&msix->table_lock); - - ctrl = pci_conf_read16(pdev->sbdf, msix_control_reg(pos)); - msix->nr_entries = msix_table_size(ctrl); - - pdev->msix = msix; + xfree(pdev); + return NULL; } list_add(&pdev->alldevs_list, &pseg->alldevs_list); @@ -449,7 +427,7 @@ static void free_pdev(struct pci_seg *pseg, struct pci_dev *pdev) } list_del(&pdev->alldevs_list); - xfree(pdev->msix); + pdev_msi_deinit(pdev); xfree(pdev); } @@ -1271,18 +1249,16 @@ bool_t pcie_aer_get_firmware_first(const struct pci_dev *pdev) static int _dump_pci_devices(struct pci_seg *pseg, void *arg) { struct pci_dev *pdev; - struct msi_desc *msi; printk("==== segment %04x ====\n", pseg->nr); list_for_each_entry ( pdev, &pseg->alldevs_list, alldevs_list ) { - printk("%pp - %pd - node %-3d - MSIs < ", + printk("%pp - %pd - node %-3d", &pdev->sbdf, pdev->domain, (pdev->node != NUMA_NO_NODE) ? pdev->node : -1); - list_for_each_entry ( msi, &pdev->msi_list, list ) - printk("%d ", msi->irq); - printk(">\n"); + pdev_dump_msi(pdev); + printk("\n"); } return 0; @@ -1422,13 +1398,9 @@ static int assign_device(struct domain *d, u16 seg, u8 bus, u8 devfn, u32 flag) ASSERT(pdev && (pdev->domain == hardware_domain || pdev->domain == dom_io)); - if ( pdev->msix ) - { - rc = pci_reset_msix_state(pdev); - if ( rc ) - goto done; - msixtbl_init(d); - } + rc = pdev_msix_assign(d, pdev); + if ( rc ) + goto done; pdev->fault.count = 0; diff --git a/xen/drivers/pci/Kconfig b/xen/drivers/pci/Kconfig index 7da03fa13b..c6a7bc8007 100644 --- a/xen/drivers/pci/Kconfig +++ b/xen/drivers/pci/Kconfig @@ -1,3 +1,7 @@ config HAS_PCI bool + +config HAS_PCI_MSI + bool + depends on HAS_PCI diff --git a/xen/include/xen/msi.h b/xen/include/xen/msi.h new file mode 100644 index 0000000000..c903d0050c --- /dev/null +++ b/xen/include/xen/msi.h @@ -0,0 +1,43 @@ +#ifndef __XEN_MSI_H_ +#define __XEN_MSI_H_ + +#include + +#ifdef CONFIG_HAS_PCI_MSI + +#include + +int pdev_msix_assign(struct domain *d, struct pci_dev *pdev); +int pdev_msi_init(struct pci_dev *pdev); +void pdev_msi_deinit(struct pci_dev *pdev); +void pdev_dump_msi(const struct pci_dev *pdev); + +#else /* !CONFIG_HAS_PCI_MSI */ + +static inline int pdev_msix_assign(struct domain *d, struct pci_dev *pdev) +{ + return 0; +} + +static inline int pdev_msi_init(struct pci_dev *pdev) +{ + return 0; +} + +static inline void pdev_msi_deinit(struct pci_dev *pdev) {} +static inline void pci_cleanup_msi(struct pci_dev *pdev) {} +static inline void pdev_dump_msi(const struct pci_dev *pdev) {} + +#endif /* CONFIG_HAS_PCI_MSI */ + +#endif /* __XEN_MSI_H */ + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * tab-width: 4 + * indent-tabs-mode: nil + * End: + */ diff --git a/xen/xsm/flask/hooks.c b/xen/xsm/flask/hooks.c index 25e87180b4..ea9a12bd71 100644 --- a/xen/xsm/flask/hooks.c +++ b/xen/xsm/flask/hooks.c @@ -21,7 +21,7 @@ #include #include #include -#ifdef CONFIG_HAS_PCI +#ifdef CONFIG_HAS_PCI_MSI #include #endif #include @@ -114,7 +114,7 @@ static int get_irq_sid(int irq, u32 *sid, struct avc_audit_data *ad) } return security_irq_sid(irq, sid); } -#ifdef CONFIG_HAS_PCI +#ifdef CONFIG_HAS_PCI_MSI { struct irq_desc *desc = irq_to_desc(irq); if ( desc->msi_desc && desc->msi_desc->dev ) { @@ -874,7 +874,7 @@ static int flask_map_domain_pirq (struct domain *d) static int flask_map_domain_msi (struct domain *d, int irq, const void *data, u32 *sid, struct avc_audit_data *ad) { -#ifdef CONFIG_HAS_PCI +#ifdef CONFIG_HAS_PCI_MSI const struct msi_info *msi = data; u32 machine_bdf = (msi->seg << 16) | (msi->bus << 8) | msi->devfn; @@ -940,7 +940,7 @@ static int flask_unmap_domain_pirq (struct domain *d) static int flask_unmap_domain_msi (struct domain *d, int irq, const void *data, u32 *sid, struct avc_audit_data *ad) { -#ifdef CONFIG_HAS_PCI +#ifdef CONFIG_HAS_PCI_MSI const struct pci_dev *pdev = data; u32 machine_bdf = (pdev->seg << 16) | (pdev->bus << 8) | pdev->devfn; From patchwork Wed Sep 22 11:34:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Rahul Singh X-Patchwork-Id: 12510325 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7A158C433EF for ; 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Wed, 22 Sep 2021 11:36:03 +0000 Received: by outflank-mailman (input) for mailman id 192522; Wed, 22 Sep 2021 11:36:02 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mT0Xi-0004iM-32 for xen-devel@lists.xenproject.org; Wed, 22 Sep 2021 11:36:02 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTP id 4207b5f5-1b99-11ec-b970-12813bfff9fa; Wed, 22 Sep 2021 11:36:00 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5C56A11B3; Wed, 22 Sep 2021 04:36:00 -0700 (PDT) Received: from e109506.cambridge.arm.com (e109506.cambridge.arm.com [10.1.199.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 5C6F63F719; Wed, 22 Sep 2021 04:35:59 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 4207b5f5-1b99-11ec-b970-12813bfff9fa From: Rahul Singh To: xen-devel@lists.xenproject.org Cc: bertrand.marquis@arm.com, rahul.singh@arm.com, andre.przywara@arm.com, Stefano Stabellini , Julien Grall , Volodymyr Babchuk Subject: [PATCH v2 02/17] xen/pci: solve compilation error on ARM with HAS_PCI enabled Date: Wed, 22 Sep 2021 12:34:48 +0100 Message-Id: X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: MIME-Version: 1.0 Compilation error is observed when HAS_PCI is enabled for ARM architecture. Add definition for arch_iommu_use_permitted() and arch_pci_clean_pirqs(). pci.c: In function ‘deassign_device’: pci.c:849:49: error: implicit declaration of function ‘pci_to_dev’; did you mean ‘dt_to_dev’? [-Werror=implicit-function-declaration] pci_to_dev(pdev)); pci.c:880: undefined reference to `arch_pci_clean_pirqs’ pci.c:1392: undefined reference to `arch_iommu_use_permitted' Signed-off-by: Rahul Singh Reviewed-by: Stefano Stabellini --- Change in v2: - Remove pci_conf_read*(..) dummy implementation - Add in code comment for arch_pci_clean_pirqs() and arch_iommu_use_permitted() - Fixed minor comments --- xen/arch/arm/Makefile | 1 + xen/arch/arm/pci/Makefile | 1 + xen/arch/arm/pci/pci.c | 33 +++++++++++++++++++++++++++++ xen/drivers/passthrough/arm/iommu.c | 9 ++++++++ xen/include/asm-arm/pci.h | 31 ++++++++++++++++++++++++--- 5 files changed, 72 insertions(+), 3 deletions(-) create mode 100644 xen/arch/arm/pci/Makefile create mode 100644 xen/arch/arm/pci/pci.c diff --git a/xen/arch/arm/Makefile b/xen/arch/arm/Makefile index 3d3b97b5b4..44d7cc81fa 100644 --- a/xen/arch/arm/Makefile +++ b/xen/arch/arm/Makefile @@ -2,6 +2,7 @@ obj-$(CONFIG_ARM_32) += arm32/ obj-$(CONFIG_ARM_64) += arm64/ obj-$(CONFIG_ARM_64) += efi/ obj-$(CONFIG_ACPI) += acpi/ +obj-$(CONFIG_HAS_PCI) += pci/ ifneq ($(CONFIG_NO_PLAT),y) obj-y += platforms/ endif diff --git a/xen/arch/arm/pci/Makefile b/xen/arch/arm/pci/Makefile new file mode 100644 index 0000000000..a98035df4c --- /dev/null +++ b/xen/arch/arm/pci/Makefile @@ -0,0 +1 @@ +obj-y += pci.o diff --git a/xen/arch/arm/pci/pci.c b/xen/arch/arm/pci/pci.c new file mode 100644 index 0000000000..a7a7bc3213 --- /dev/null +++ b/xen/arch/arm/pci/pci.c @@ -0,0 +1,33 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include + +/* + * PIRQ event channels are not supported on Arm, so nothing to do. + */ +int arch_pci_clean_pirqs(struct domain *d) +{ + return 0; +} + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * tab-width: 4 + * indent-tabs-mode: nil + * End: + */ diff --git a/xen/drivers/passthrough/arm/iommu.c b/xen/drivers/passthrough/arm/iommu.c index db3b07a571..ee653a9c48 100644 --- a/xen/drivers/passthrough/arm/iommu.c +++ b/xen/drivers/passthrough/arm/iommu.c @@ -135,3 +135,12 @@ void arch_iommu_domain_destroy(struct domain *d) void __hwdom_init arch_iommu_hwdom_init(struct domain *d) { } + +/* + * Unlike x86, Arm doesn't support mem-sharing, mem-paging and log-dirty (yet). + * So there is no restriction to use the IOMMU. + */ +bool arch_iommu_use_permitted(const struct domain *d) +{ + return true; +} diff --git a/xen/include/asm-arm/pci.h b/xen/include/asm-arm/pci.h index de13359f65..7dd9eb3dba 100644 --- a/xen/include/asm-arm/pci.h +++ b/xen/include/asm-arm/pci.h @@ -1,7 +1,32 @@ -#ifndef __X86_PCI_H__ -#define __X86_PCI_H__ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ +#ifndef __ARM_PCI_H__ +#define __ARM_PCI_H__ + +#ifdef CONFIG_HAS_PCI + +#define pci_to_dev(pcidev) (&(pcidev)->arch.dev) + +/* Arch pci dev struct */ struct arch_pci_dev { + struct device dev; }; -#endif /* __X86_PCI_H__ */ +#else /*!CONFIG_HAS_PCI*/ + +struct arch_pci_dev { }; + +#endif /*!CONFIG_HAS_PCI*/ +#endif /* __ARM_PCI_H__ */ From patchwork Wed Sep 22 11:34:49 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Rahul Singh X-Patchwork-Id: 12510327 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5D392C433EF for ; Wed, 22 Sep 2021 11:36:38 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1D68260EE7 for ; Wed, 22 Sep 2021 11:36:38 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 1D68260EE7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.192536.343026 (Exim 4.92) (envelope-from ) id 1mT0YA-0005di-DC; Wed, 22 Sep 2021 11:36:30 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 192536.343026; Wed, 22 Sep 2021 11:36:30 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mT0YA-0005db-8z; Wed, 22 Sep 2021 11:36:30 +0000 Received: by outflank-mailman (input) for mailman id 192536; Wed, 22 Sep 2021 11:36:28 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mT0Y8-0005a5-Ll for xen-devel@lists.xenproject.org; Wed, 22 Sep 2021 11:36:28 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-rack-iad1.inumbo.com (Halon) with ESMTP id 18472106-50f6-4ff6-aecf-475723fd105f; Wed, 22 Sep 2021 11:36:27 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 580C511B3; Wed, 22 Sep 2021 04:36:27 -0700 (PDT) Received: from e109506.cambridge.arm.com (e109506.cambridge.arm.com [10.1.199.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 72BB73F719; Wed, 22 Sep 2021 04:36:26 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 18472106-50f6-4ff6-aecf-475723fd105f From: Rahul Singh To: xen-devel@lists.xenproject.org Cc: bertrand.marquis@arm.com, rahul.singh@arm.com, andre.przywara@arm.com, Jan Beulich , Paul Durrant Subject: [PATCH v2 03/17] xen/arm: solve compilation error on ARM with ACPI && HAS_PCI Date: Wed, 22 Sep 2021 12:34:49 +0100 Message-Id: X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: MIME-Version: 1.0 prelink.o: In function `pcie_aer_get_firmware_first’: drivers/passthrough/pci.c:1251: undefined reference to `apei_hest_parse' Compilation error is observed when ACPI and HAS_PCI is enabled for ARM architecture. APEI not supported on ARM yet move the code under CONFIG_X86 flag to gate the code for ARM. Signed-off-by: Rahul Singh Acked-by: Stefano Stabellini --- Change in v2: Add in code comment "APEI not supported on ARM yet" --- xen/drivers/passthrough/pci.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/xen/drivers/passthrough/pci.c b/xen/drivers/passthrough/pci.c index 8996403161..d774a6154e 100644 --- a/xen/drivers/passthrough/pci.c +++ b/xen/drivers/passthrough/pci.c @@ -1150,7 +1150,8 @@ void __hwdom_init setup_hwdom_pci_devices( pcidevs_unlock(); } -#ifdef CONFIG_ACPI +/* APEI not supported on ARM yet. */ +#if defined(CONFIG_ACPI) && defined(CONFIG_X86) #include #include From patchwork Wed Sep 22 11:34:50 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rahul Singh X-Patchwork-Id: 12510329 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 08577C433F5 for ; Wed, 22 Sep 2021 11:37:01 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CA7CA60F43 for ; Wed, 22 Sep 2021 11:37:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org CA7CA60F43 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.192543.343037 (Exim 4.92) (envelope-from ) id 1mT0YW-0006Dj-Ka; Wed, 22 Sep 2021 11:36:52 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 192543.343037; Wed, 22 Sep 2021 11:36:52 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mT0YW-0006Dc-HP; Wed, 22 Sep 2021 11:36:52 +0000 Received: by outflank-mailman (input) for mailman id 192543; Wed, 22 Sep 2021 11:36:51 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mT0YV-0006DO-IG for xen-devel@lists.xenproject.org; Wed, 22 Sep 2021 11:36:51 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTP id 60b1227e-1b99-11ec-b970-12813bfff9fa; Wed, 22 Sep 2021 11:36:50 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 7895911B3; Wed, 22 Sep 2021 04:36:50 -0700 (PDT) Received: from e109506.cambridge.arm.com (e109506.cambridge.arm.com [10.1.199.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 7726A3F719; Wed, 22 Sep 2021 04:36:49 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 60b1227e-1b99-11ec-b970-12813bfff9fa From: Rahul Singh To: xen-devel@lists.xenproject.org Cc: bertrand.marquis@arm.com, rahul.singh@arm.com, andre.przywara@arm.com, Ian Jackson , Wei Liu , Juergen Gross Subject: [PATCH v2 04/17] xen/arm: xc_domain_ioport_permission(..) not supported on ARM. Date: Wed, 22 Sep 2021 12:34:50 +0100 Message-Id: X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: ARM architecture does not implement I/O ports. Ignore this call on ARM to avoid the overhead of making a hypercall just for Xen to return -ENOSYS. Signed-off-by: Rahul Singh Reviewed-by: Stefano Stabellini --- Change in v2: - Instead of returning success in XEN, ignored the call in xl. --- tools/libs/ctrl/xc_domain.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/tools/libs/ctrl/xc_domain.c b/tools/libs/ctrl/xc_domain.c index 23322b70b5..25c95f6596 100644 --- a/tools/libs/ctrl/xc_domain.c +++ b/tools/libs/ctrl/xc_domain.c @@ -1348,6 +1348,14 @@ int xc_domain_ioport_permission(xc_interface *xch, uint32_t nr_ports, uint32_t allow_access) { +#if defined(__arm__) || defined(__aarch64__) + /* + * The ARM architecture does not implement I/O ports. + * Avoid the overhead of making a hypercall just for Xen to return -ENOSYS. + * It is safe to ignore this call on ARM so we just return 0. + */ + return 0; +#else DECLARE_DOMCTL; domctl.cmd = XEN_DOMCTL_ioport_permission; @@ -1357,6 +1365,7 @@ int xc_domain_ioport_permission(xc_interface *xch, domctl.u.ioport_permission.allow_access = allow_access; return do_domctl(xch, &domctl); +#endif } int xc_availheap(xc_interface *xch, From patchwork Wed Sep 22 11:34:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rahul Singh X-Patchwork-Id: 12510331 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E0480C433F5 for ; Wed, 22 Sep 2021 11:37:24 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9ECED6103C for ; Wed, 22 Sep 2021 11:37:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 9ECED6103C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.192550.343048 (Exim 4.92) (envelope-from ) id 1mT0Yu-0006yD-TX; Wed, 22 Sep 2021 11:37:16 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 192550.343048; Wed, 22 Sep 2021 11:37:16 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mT0Yu-0006y6-Pd; Wed, 22 Sep 2021 11:37:16 +0000 Received: by outflank-mailman (input) for mailman id 192550; Wed, 22 Sep 2021 11:37:14 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mT0Ys-0006xk-T3 for xen-devel@lists.xenproject.org; Wed, 22 Sep 2021 11:37:14 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTP id 6dea7712-1b99-11ec-b970-12813bfff9fa; Wed, 22 Sep 2021 11:37:13 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id B83D411B3; Wed, 22 Sep 2021 04:37:12 -0700 (PDT) Received: from e109506.cambridge.arm.com (e109506.cambridge.arm.com [10.1.199.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 1806F3F719; Wed, 22 Sep 2021 04:37:10 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 6dea7712-1b99-11ec-b970-12813bfff9fa From: Rahul Singh To: xen-devel@lists.xenproject.org Cc: bertrand.marquis@arm.com, rahul.singh@arm.com, andre.przywara@arm.com, Stefano Stabellini , Julien Grall , Volodymyr Babchuk , Andrew Cooper , George Dunlap , Ian Jackson , Jan Beulich , Wei Liu , =?utf-8?q?Roger_Pau_?= =?utf-8?q?Monn=C3=A9?= Subject: [PATCH v2 05/17] xen/arm: Add PHYSDEVOP_pci_device_* support for ARM Date: Wed, 22 Sep 2021 12:34:51 +0100 Message-Id: X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: Hardware domain is in charge of doing the PCI enumeration and will discover the PCI devices and then will communicate to XEN via hyper call PHYSDEVOP_pci_device_add(..) to add the PCI devices in XEN. Also implement PHYSDEVOP_pci_device_remove(..) to remove the PCI device. As most of the code for PHYSDEVOP_pci_device_* is the same between x86 and ARM, move the code to a common file to avoid duplication. Signed-off-by: Rahul Singh --- Change in v2: - Add support for PHYSDEVOP_pci_device_remove() - Move code to common code --- xen/arch/arm/physdev.c | 5 +- xen/arch/x86/physdev.c | 50 +------------------- xen/arch/x86/x86_64/physdev.c | 4 +- xen/common/Makefile | 1 + xen/common/physdev.c | 81 +++++++++++++++++++++++++++++++++ xen/include/asm-arm/hypercall.h | 2 - xen/include/asm-arm/numa.h | 5 ++ xen/include/asm-x86/hypercall.h | 9 ++-- xen/include/xen/hypercall.h | 8 ++++ 9 files changed, 106 insertions(+), 59 deletions(-) create mode 100644 xen/common/physdev.c diff --git a/xen/arch/arm/physdev.c b/xen/arch/arm/physdev.c index e91355fe22..4e00b03aab 100644 --- a/xen/arch/arm/physdev.c +++ b/xen/arch/arm/physdev.c @@ -8,10 +8,9 @@ #include #include #include -#include +#include - -int do_physdev_op(int cmd, XEN_GUEST_HANDLE_PARAM(void) arg) +long arch_physdev_op(int cmd, XEN_GUEST_HANDLE_PARAM(void) arg) { gdprintk(XENLOG_DEBUG, "PHYSDEVOP cmd=%d: not implemented\n", cmd); return -ENOSYS; diff --git a/xen/arch/x86/physdev.c b/xen/arch/x86/physdev.c index 23465bcd00..c00cc99404 100644 --- a/xen/arch/x86/physdev.c +++ b/xen/arch/x86/physdev.c @@ -174,7 +174,7 @@ int physdev_unmap_pirq(domid_t domid, int pirq) } #endif /* COMPAT */ -ret_t do_physdev_op(int cmd, XEN_GUEST_HANDLE_PARAM(void) arg) +ret_t arch_physdev_op(int cmd, XEN_GUEST_HANDLE_PARAM(void) arg) { int irq; ret_t ret; @@ -480,54 +480,6 @@ ret_t do_physdev_op(int cmd, XEN_GUEST_HANDLE_PARAM(void) arg) break; } - case PHYSDEVOP_pci_device_add: { - struct physdev_pci_device_add add; - struct pci_dev_info pdev_info; - nodeid_t node; - - ret = -EFAULT; - if ( copy_from_guest(&add, arg, 1) != 0 ) - break; - - pdev_info.is_extfn = !!(add.flags & XEN_PCI_DEV_EXTFN); - if ( add.flags & XEN_PCI_DEV_VIRTFN ) - { - pdev_info.is_virtfn = 1; - pdev_info.physfn.bus = add.physfn.bus; - pdev_info.physfn.devfn = add.physfn.devfn; - } - else - pdev_info.is_virtfn = 0; - - if ( add.flags & XEN_PCI_DEV_PXM ) - { - uint32_t pxm; - size_t optarr_off = offsetof(struct physdev_pci_device_add, optarr) / - sizeof(add.optarr[0]); - - if ( copy_from_guest_offset(&pxm, arg, optarr_off, 1) ) - break; - - node = pxm_to_node(pxm); - } - else - node = NUMA_NO_NODE; - - ret = pci_add_device(add.seg, add.bus, add.devfn, &pdev_info, node); - break; - } - - case PHYSDEVOP_pci_device_remove: { - struct physdev_pci_device dev; - - ret = -EFAULT; - if ( copy_from_guest(&dev, arg, 1) != 0 ) - break; - - ret = pci_remove_device(dev.seg, dev.bus, dev.devfn); - break; - } - case PHYSDEVOP_prepare_msix: case PHYSDEVOP_release_msix: { struct physdev_pci_device dev; diff --git a/xen/arch/x86/x86_64/physdev.c b/xen/arch/x86/x86_64/physdev.c index 0a50cbd4d8..5f72652ff7 100644 --- a/xen/arch/x86/x86_64/physdev.c +++ b/xen/arch/x86/x86_64/physdev.c @@ -9,9 +9,10 @@ EMIT_FILE; #include #include #include -#include +#include #define do_physdev_op compat_physdev_op +#define arch_physdev_op arch_compat_physdev_op #define physdev_apic compat_physdev_apic #define physdev_apic_t physdev_apic_compat_t @@ -82,6 +83,7 @@ CHECK_physdev_pci_device typedef int ret_t; #include "../physdev.c" +#include "../../../common/physdev.c" /* * Local variables: diff --git a/xen/common/Makefile b/xen/common/Makefile index 54de70d422..bcb1c8fb03 100644 --- a/xen/common/Makefile +++ b/xen/common/Makefile @@ -29,6 +29,7 @@ obj-y += notifier.o obj-y += page_alloc.o obj-$(CONFIG_HAS_PDX) += pdx.o obj-$(CONFIG_PERF_COUNTERS) += perfc.o +obj-y += physdev.o obj-y += preempt.o obj-y += random.o obj-y += rangeset.o diff --git a/xen/common/physdev.c b/xen/common/physdev.c new file mode 100644 index 0000000000..8d44b20db8 --- /dev/null +++ b/xen/common/physdev.c @@ -0,0 +1,81 @@ + +#include +#include +#include + +#ifndef COMPAT +typedef long ret_t; +#endif + +ret_t do_physdev_op(int cmd, XEN_GUEST_HANDLE_PARAM(void) arg) +{ + ret_t ret; + + switch ( cmd ) + { +#ifdef CONFIG_HAS_PCI + case PHYSDEVOP_pci_device_add: { + struct physdev_pci_device_add add; + struct pci_dev_info pdev_info; + nodeid_t node; + + ret = -EFAULT; + if ( copy_from_guest(&add, arg, 1) != 0 ) + break; + + pdev_info.is_extfn = !!(add.flags & XEN_PCI_DEV_EXTFN); + if ( add.flags & XEN_PCI_DEV_VIRTFN ) + { + pdev_info.is_virtfn = 1; + pdev_info.physfn.bus = add.physfn.bus; + pdev_info.physfn.devfn = add.physfn.devfn; + } + else + pdev_info.is_virtfn = 0; + + if ( add.flags & XEN_PCI_DEV_PXM ) + { + uint32_t pxm; + size_t optarr_off = offsetof(struct physdev_pci_device_add, optarr) / + sizeof(add.optarr[0]); + + if ( copy_from_guest_offset(&pxm, arg, optarr_off, 1) ) + break; + + node = pxm_to_node(pxm); + } + else + node = NUMA_NO_NODE; + + ret = pci_add_device(add.seg, add.bus, add.devfn, &pdev_info, node); + break; + } + + case PHYSDEVOP_pci_device_remove: { + struct physdev_pci_device dev; + + ret = -EFAULT; + if ( copy_from_guest(&dev, arg, 1) != 0 ) + break; + + ret = pci_remove_device(dev.seg, dev.bus, dev.devfn); + break; + } +#endif + default: + ret = arch_physdev_op(cmd, arg);; + break; + } + + return ret; +} + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * tab-width: 4 + * indent-tabs-mode: nil + * End: + */ diff --git a/xen/include/asm-arm/hypercall.h b/xen/include/asm-arm/hypercall.h index a0c5a31a2f..c6e4a04fd6 100644 --- a/xen/include/asm-arm/hypercall.h +++ b/xen/include/asm-arm/hypercall.h @@ -2,8 +2,6 @@ #define __ASM_ARM_HYPERCALL_H__ #include /* for arch_do_domctl */ -int do_physdev_op(int cmd, XEN_GUEST_HANDLE_PARAM(void) arg); - long do_arm_vcpu_op(int cmd, unsigned int vcpuid, XEN_GUEST_HANDLE_PARAM(void) arg); long subarch_do_domctl(struct xen_domctl *domctl, struct domain *d, diff --git a/xen/include/asm-arm/numa.h b/xen/include/asm-arm/numa.h index 31a6de4e23..dbd1c2467f 100644 --- a/xen/include/asm-arm/numa.h +++ b/xen/include/asm-arm/numa.h @@ -25,6 +25,11 @@ extern mfn_t first_valid_mfn; #define node_start_pfn(nid) (mfn_x(first_valid_mfn)) #define __node_distance(a, b) (20) +static inline nodeid_t pxm_to_node(unsigned pxm) +{ + return 0xff; +} + #endif /* __ARCH_ARM_NUMA_H */ /* * Local variables: diff --git a/xen/include/asm-x86/hypercall.h b/xen/include/asm-x86/hypercall.h index 0ae3b8b043..7afba98186 100644 --- a/xen/include/asm-x86/hypercall.h +++ b/xen/include/asm-x86/hypercall.h @@ -105,10 +105,6 @@ do_update_va_mapping( u64 val64, unsigned long flags); -extern long -do_physdev_op( - int cmd, XEN_GUEST_HANDLE_PARAM(void) arg); - extern long do_update_va_mapping_otherdomain( unsigned long va, @@ -151,6 +147,11 @@ compat_physdev_op( int cmd, XEN_GUEST_HANDLE_PARAM(void) arg); +extern int +arch_compat_physdev_op( + int cmd, + XEN_GUEST_HANDLE_PARAM(void) arg); + extern int arch_compat_vcpu_op( int cmd, struct vcpu *v, XEN_GUEST_HANDLE_PARAM(void) arg); diff --git a/xen/include/xen/hypercall.h b/xen/include/xen/hypercall.h index 3771487a30..5cc74f40b7 100644 --- a/xen/include/xen/hypercall.h +++ b/xen/include/xen/hypercall.h @@ -45,6 +45,14 @@ extern long do_platform_op( XEN_GUEST_HANDLE_PARAM(xen_platform_op_t) u_xenpf_op); +extern long +do_physdev_op( + int cmd, XEN_GUEST_HANDLE_PARAM(void) arg); + +extern long +arch_physdev_op( + int cmd, XEN_GUEST_HANDLE_PARAM(void) arg); + /* * To allow safe resume of do_memory_op() after preemption, we need to know * at what point in the page list to resume. For this purpose I steal the From patchwork Wed Sep 22 11:34:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rahul Singh X-Patchwork-Id: 12510333 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9E7CCC433EF for ; Wed, 22 Sep 2021 11:37:43 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6D12060F26 for ; Wed, 22 Sep 2021 11:37:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6D12060F26 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.192558.343059 (Exim 4.92) (envelope-from ) id 1mT0ZE-0007dm-9O; Wed, 22 Sep 2021 11:37:36 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 192558.343059; Wed, 22 Sep 2021 11:37:36 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mT0ZE-0007df-6H; Wed, 22 Sep 2021 11:37:36 +0000 Received: by outflank-mailman (input) for mailman id 192558; Wed, 22 Sep 2021 11:37:35 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mT0ZD-0007Zf-5P for xen-devel@lists.xenproject.org; Wed, 22 Sep 2021 11:37:35 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-rack-iad1.inumbo.com (Halon) with ESMTP id c222c13e-8bb5-4352-b475-868966b89b92; Wed, 22 Sep 2021 11:37:33 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 6B95711B3; Wed, 22 Sep 2021 04:37:33 -0700 (PDT) Received: from e109506.cambridge.arm.com (e109506.cambridge.arm.com [10.1.199.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 8664C3F719; Wed, 22 Sep 2021 04:37:32 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: c222c13e-8bb5-4352-b475-868966b89b92 From: Rahul Singh To: xen-devel@lists.xenproject.org Cc: bertrand.marquis@arm.com, rahul.singh@arm.com, andre.przywara@arm.com, Stefano Stabellini , Julien Grall Subject: [PATCH v2 06/17] xen/device-tree: Add dt_property_read_variable_u32_array helper Date: Wed, 22 Sep 2021 12:34:52 +0100 Message-Id: <35eb7ec429da3a9e1af626af4521c13c9683f8fd.1632307952.git.rahul.singh@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: Based on tag Linux v5.14.2 commit bbdd3de144fc142f2f4b9834c9241cc4e7f3d3fc Import the Linux helper of_property_read_variable_u32_array. This function find and read an array of 32 bit integers from a property, with bounds on the minimum and maximum array size. Signed-off-by: Rahul Singh --- Change in v2: Patch introduced in v2 --- xen/common/device_tree.c | 61 +++++++++++++++++++++++++++++++++++ xen/include/xen/device_tree.h | 26 +++++++++++++++ 2 files changed, 87 insertions(+) diff --git a/xen/common/device_tree.c b/xen/common/device_tree.c index 03d25a81ce..53160d61f8 100644 --- a/xen/common/device_tree.c +++ b/xen/common/device_tree.c @@ -208,6 +208,67 @@ int dt_property_read_string(const struct dt_device_node *np, return 0; } +/** + * dt_find_property_value_of_size + * + * @np: device node from which the property value is to be read. + * @propname: name of the property to be searched. + * @min: minimum allowed length of property value + * @max: maximum allowed length of property value (0 means unlimited) + * @len: if !=NULL, actual length is written to here + * + * Search for a property in a device node and valid the requested size. + * + * Return: The property value on success, -EINVAL if the property does not + * exist, -ENODATA if property does not have a value, and -EOVERFLOW if the + * property data is too small or too large. + */ +static void *dt_find_property_value_of_size(const struct dt_device_node *np, + const char *propname, u32 min, + u32 max, size_t *len) +{ + const struct dt_property *prop = dt_find_property(np, propname, NULL); + + if ( !prop ) + return ERR_PTR(-EINVAL); + if ( !prop->value ) + return ERR_PTR(-ENODATA); + if ( prop->length < min ) + return ERR_PTR(-EOVERFLOW); + if ( max && prop->length > max ) + return ERR_PTR(-EOVERFLOW); + + if ( len ) + *len = prop->length; + + return prop->value; +} + +int dt_property_read_variable_u32_array(const struct dt_device_node *np, + const char *propname, u32 *out_values, + size_t sz_min, size_t sz_max) +{ + size_t sz, count; + const __be32 *val = dt_find_property_value_of_size(np, propname, + (sz_min * sizeof(*out_values)), + (sz_max * sizeof(*out_values)), + &sz); + + if ( IS_ERR(val) ) + return PTR_ERR(val); + + if ( !sz_max ) + sz = sz_min; + else + sz /= sizeof(*out_values); + + count = sz; + while ( count-- ) + *out_values++ = be32_to_cpup(val++); + + return sz; +} + int dt_property_match_string(const struct dt_device_node *np, const char *propname, const char *string) { diff --git a/xen/include/xen/device_tree.h b/xen/include/xen/device_tree.h index b02696be94..1693fb8e8c 100644 --- a/xen/include/xen/device_tree.h +++ b/xen/include/xen/device_tree.h @@ -366,6 +366,32 @@ bool_t dt_property_read_u32(const struct dt_device_node *np, bool_t dt_property_read_u64(const struct dt_device_node *np, const char *name, u64 *out_value); + +/** + * dt_property_read_variable_u32_array - Find and read an array of 32 bit + * integers from a property, with bounds on the minimum and maximum array size. + * + * @np: device node from which the property value is to be read. + * @propname: name of the property to be searched. + * @out_values: pointer to return found values. + * @sz_min: minimum number of array elements to read + * @sz_max: maximum number of array elements to read, if zero there is no + * upper limit on the number of elements in the dts entry but only + * sz_min will be read. + * + * Search for a property in a device node and read 32-bit value(s) from + * it. + * + * Return: The number of elements read on success, -EINVAL if the property + * does not exist, -ENODATA if property does not have a value, and -EOVERFLOW + * if the property data is smaller than sz_min or longer than sz_max. + * + * The out_values is modified only if a valid u32 value can be decoded. + */ +int dt_property_read_variable_u32_array(const struct dt_device_node *np, + const char *propname, u32 *out_values, + size_t sz_min, size_t sz_max); + /** * dt_property_read_bool - Check if a property exists * @np: node to get the value From patchwork Wed Sep 22 11:34:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rahul Singh X-Patchwork-Id: 12510335 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 37598C433EF for ; Wed, 22 Sep 2021 11:38:08 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0486F60EE7 for ; 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Wed, 22 Sep 2021 11:37:58 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-rack-iad1.inumbo.com (Halon) with ESMTP id 2e26ecf1-1f2d-4167-9210-37c43a669938; Wed, 22 Sep 2021 11:37:57 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 1F11011B3; Wed, 22 Sep 2021 04:37:57 -0700 (PDT) Received: from e109506.cambridge.arm.com (e109506.cambridge.arm.com [10.1.199.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 39D573F719; Wed, 22 Sep 2021 04:37:56 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 2e26ecf1-1f2d-4167-9210-37c43a669938 From: Rahul Singh To: xen-devel@lists.xenproject.org Cc: bertrand.marquis@arm.com, rahul.singh@arm.com, andre.przywara@arm.com, Stefano Stabellini , Julien Grall Subject: [PATCH v2 07/17] xen/device-tree: Add dt_property_read_u32_array helper Date: Wed, 22 Sep 2021 12:34:53 +0100 Message-Id: <852610e258d4c36888b68771061afdc0df95e401.1632307952.git.rahul.singh@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: Based on tag Linux v5.14.2 commit bbdd3de144fc142f2f4b9834c9241cc4e7f3d3fc Import the Linux helper of_property_read_u32_array. This function find and read an array of 32 bit integers from a property. Signed-off-by: Rahul Singh --- Change in v2: Patch introduced in v2 --- xen/include/xen/device_tree.h | 31 ++++++++++++++++++++++++++++++- 1 file changed, 30 insertions(+), 1 deletion(-) diff --git a/xen/include/xen/device_tree.h b/xen/include/xen/device_tree.h index 1693fb8e8c..497144b8a7 100644 --- a/xen/include/xen/device_tree.h +++ b/xen/include/xen/device_tree.h @@ -366,7 +366,6 @@ bool_t dt_property_read_u32(const struct dt_device_node *np, bool_t dt_property_read_u64(const struct dt_device_node *np, const char *name, u64 *out_value); - /** * dt_property_read_variable_u32_array - Find and read an array of 32 bit * integers from a property, with bounds on the minimum and maximum array size. @@ -392,6 +391,36 @@ int dt_property_read_variable_u32_array(const struct dt_device_node *np, const char *propname, u32 *out_values, size_t sz_min, size_t sz_max); +/** + * dt_property_read_u32_array - Find and read an array of 32 bit integers + * from a property. + * + * @np: device node from which the property value is to be read. + * @propname: name of the property to be searched. + * @out_values: pointer to return value, modified only if return value is 0. + * @sz: number of array elements to read + * + * Search for a property in a device node and read 32-bit value(s) from + * it. + * + * Return: 0 on success, -EINVAL if the property does not exist, + * -ENODATA if property does not have a value, and -EOVERFLOW if the + * property data isn't large enough. + * + * The out_values is modified only if a valid u32 value can be decoded. + */ +static inline int dt_property_read_u32_array(const struct dt_device_node *np, + const char *propname, + u32 *out_values, size_t sz) +{ + int ret = dt_property_read_variable_u32_array(np, propname, out_values, + sz, 0); + if ( ret >= 0 ) + return 0; + else + return ret; +} + /** * dt_property_read_bool - Check if a property exists * @np: node to get the value From patchwork Wed Sep 22 11:34:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rahul Singh X-Patchwork-Id: 12510337 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 24A6BC433F5 for ; Wed, 22 Sep 2021 11:38:27 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E9FF360FA0 for ; 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Wed, 22 Sep 2021 11:38:18 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-rack-iad1.inumbo.com (Halon) with ESMTP id 4de2483e-8f72-40e6-8d6c-4f95e8c0774b; Wed, 22 Sep 2021 11:38:12 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 6D72C11B3; Wed, 22 Sep 2021 04:38:12 -0700 (PDT) Received: from e109506.cambridge.arm.com (e109506.cambridge.arm.com [10.1.199.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 881CE3F719; Wed, 22 Sep 2021 04:38:11 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 4de2483e-8f72-40e6-8d6c-4f95e8c0774b From: Rahul Singh To: xen-devel@lists.xenproject.org Cc: bertrand.marquis@arm.com, rahul.singh@arm.com, andre.przywara@arm.com, Stefano Stabellini , Julien Grall Subject: [PATCH v2 08/17] xen/device-tree: Add dt_get_pci_domain_nr helper Date: Wed, 22 Sep 2021 12:34:54 +0100 Message-Id: X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: Based on tag Linux v5.14.2 commit bbdd3de144fc142f2f4b9834c9241cc4e7f3d3fc Import the Linux helper of_get_pci_domain_nr. This function will try to obtain the host bridge domain number by finding a property called "linux,pci-domain" of the given device node. Signed-off-by: Rahul Singh --- Change in v2: Patch introduced in v2 --- xen/common/device_tree.c | 12 ++++++++++++ xen/include/xen/device_tree.h | 19 +++++++++++++++++++ 2 files changed, 31 insertions(+) diff --git a/xen/common/device_tree.c b/xen/common/device_tree.c index 53160d61f8..ea93da1725 100644 --- a/xen/common/device_tree.c +++ b/xen/common/device_tree.c @@ -2183,6 +2183,18 @@ void __init dt_unflatten_host_device_tree(void) dt_alias_scan(); } +int dt_get_pci_domain_nr(struct dt_device_node *node) +{ + u32 domain; + int error; + + error = dt_property_read_u32(node, "linux,pci-domain", &domain); + if ( !error ) + return -EINVAL; + + return (u16)domain; +} + /* * Local variables: * mode: C diff --git a/xen/include/xen/device_tree.h b/xen/include/xen/device_tree.h index 497144b8a7..9069040ef7 100644 --- a/xen/include/xen/device_tree.h +++ b/xen/include/xen/device_tree.h @@ -831,6 +831,25 @@ int dt_count_phandle_with_args(const struct dt_device_node *np, const char *list_name, const char *cells_name); +/** + * dt_get_pci_domain_nr - Find the host bridge domain number + * of the given device node. + * @node: Device tree node with the domain information. + * + * This function will try to obtain the host bridge domain number by finding + * a property called "linux,pci-domain" of the given device node. + * + * Return: + * * > 0 - On success, an associated domain number. + * * -EINVAL - The property "linux,pci-domain" does not exist. + * * -ENODATA - The linux,pci-domain" property does not have value. + * * -EOVERFLOW - Invalid "linux,pci-domain" property value. + * + * Returns the associated domain number from DT in the range [0-0xffff], or + * a negative value if the required property is not found. + */ +int dt_get_pci_domain_nr(struct dt_device_node *node); + #ifdef CONFIG_DEVICE_TREE_DEBUG #define dt_dprintk(fmt, args...) \ printk(XENLOG_DEBUG fmt, ## args) From patchwork Wed Sep 22 11:34:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rahul Singh X-Patchwork-Id: 12510339 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C2DF2C433F5 for ; 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Date: Wed, 22 Sep 2021 12:34:55 +0100 Message-Id: <000832623dc7fb429db4b4517583f16affdba35b.1632307952.git.rahul.singh@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: pci_init(..) will be called during xen startup to initialize and probe the PCI host-bridge driver. Signed-off-by: Rahul Singh --- Change in v2: - ACPI init function to return int - pci_segments_init() called before dt/acpi init --- xen/arch/arm/pci/pci.c | 54 ++++++++++++++++++++++++++++++++++++ xen/include/asm-arm/device.h | 1 + 2 files changed, 55 insertions(+) diff --git a/xen/arch/arm/pci/pci.c b/xen/arch/arm/pci/pci.c index a7a7bc3213..71fa532842 100644 --- a/xen/arch/arm/pci/pci.c +++ b/xen/arch/arm/pci/pci.c @@ -12,6 +12,10 @@ * along with this program. If not, see . */ +#include +#include +#include +#include #include /* @@ -22,6 +26,56 @@ int arch_pci_clean_pirqs(struct domain *d) return 0; } +static int __init dt_pci_init(void) +{ + struct dt_device_node *np; + int rc; + + dt_for_each_device_node(dt_host, np) + { + rc = device_init(np, DEVICE_PCI, NULL); + if( !rc ) + continue; + /* + * Ignore the following error codes: + * - EBADF: Indicate the current is not an pci + * - ENODEV: The pci device is not present or cannot be used by + * Xen. + */ + else if ( rc != -EBADF && rc != -ENODEV ) + { + printk(XENLOG_ERR "No driver found in XEN or driver init error.\n"); + return rc; + } + } + + return 0; +} + +#ifdef CONFIG_ACPI +static int __init acpi_pci_init(void) +{ + printk(XENLOG_ERR "ACPI pci init not supported \n"); + return 0; +} +#else +static inline int __init acpi_pci_init(void) +{ + return -EINVAL; +} +#endif + +static int __init pci_init(void) +{ + pci_segments_init(); + + if ( acpi_disabled ) + return dt_pci_init(); + else + return acpi_pci_init(); +} +__initcall(pci_init); + /* * Local variables: * mode: C diff --git a/xen/include/asm-arm/device.h b/xen/include/asm-arm/device.h index ee7cff2d44..5ecd5e7bd1 100644 --- a/xen/include/asm-arm/device.h +++ b/xen/include/asm-arm/device.h @@ -34,6 +34,7 @@ enum device_class DEVICE_SERIAL, DEVICE_IOMMU, DEVICE_GIC, + DEVICE_PCI, /* Use for error */ DEVICE_UNKNOWN, }; From patchwork Wed Sep 22 11:34:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rahul Singh X-Patchwork-Id: 12510345 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B3CCAC433EF for ; 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Wed, 22 Sep 2021 11:39:24 +0000 Received: by outflank-mailman (input) for mailman id 192589; Wed, 22 Sep 2021 11:39:23 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mT0ax-0001l8-DW for xen-devel@lists.xenproject.org; Wed, 22 Sep 2021 11:39:23 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTP id bb17faf8-1b99-11ec-b970-12813bfff9fa; Wed, 22 Sep 2021 11:39:22 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 421DE11B3; Wed, 22 Sep 2021 04:39:22 -0700 (PDT) Received: from e109506.cambridge.arm.com (e109506.cambridge.arm.com [10.1.199.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 5CE9E3F719; Wed, 22 Sep 2021 04:39:20 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: bb17faf8-1b99-11ec-b970-12813bfff9fa From: Rahul Singh To: xen-devel@lists.xenproject.org Cc: bertrand.marquis@arm.com, rahul.singh@arm.com, andre.przywara@arm.com, Andrew Cooper , George Dunlap , Ian Jackson , Jan Beulich , Julien Grall , Stefano Stabellini , Wei Liu , Volodymyr Babchuk , =?utf-8?q?Roger_Pau_Monn?= =?utf-8?q?=C3=A9?= Subject: [PATCH v2 10/17] xen/arm: Add cmdline boot option "pci-passthrough = " Date: Wed, 22 Sep 2021 12:34:56 +0100 Message-Id: <9dcb9b3b6b6923db00d6e56da26a8503d5a4855a.1632307952.git.rahul.singh@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: Add cmdline boot option "pci-passthrough = = " to enable disable the PCI passthrough support on ARM. Signed-off-by: Rahul Singh --- Change in v2: - Add option in xen-command-line.pandoc - Change pci option to pci-passthrough - modify option from custom_param to boolean param --- docs/misc/xen-command-line.pandoc | 7 +++++++ xen/arch/arm/pci/pci.c | 14 ++++++++++++++ xen/common/physdev.c | 6 ++++++ xen/include/asm-arm/pci.h | 13 +++++++++++++ xen/include/asm-x86/pci.h | 8 ++++++++ 5 files changed, 48 insertions(+) diff --git a/docs/misc/xen-command-line.pandoc b/docs/misc/xen-command-line.pandoc index b175645fde..c867f1cf58 100644 --- a/docs/misc/xen-command-line.pandoc +++ b/docs/misc/xen-command-line.pandoc @@ -1783,6 +1783,13 @@ All numbers specified must be hexadecimal ones. This option can be specified more than once (up to 8 times at present). +### pci-passthrough (arm) +> `= ` + +> Default: `false` + +Flag to enable or disable support for PCI passthrough + ### pcid (x86) > `= | xpti=` diff --git a/xen/arch/arm/pci/pci.c b/xen/arch/arm/pci/pci.c index 71fa532842..fe96a9b135 100644 --- a/xen/arch/arm/pci/pci.c +++ b/xen/arch/arm/pci/pci.c @@ -16,6 +16,7 @@ #include #include #include +#include #include /* @@ -65,8 +66,21 @@ static inline int __init acpi_pci_init(void) } #endif +/* + * By default pci passthrough is disabled + */ +bool_t __read_mostly pci_passthrough_enabled = 0; +boolean_param("pci-passthrough", pci_passthrough_enabled); + static int __init pci_init(void) { + /* + * Enable PCI passthrough when has been enabled explicitly + * (pci-passthrough=on) + */ + if ( !pci_passthrough_enabled) + return 0; + pci_segments_init(); if ( acpi_disabled ) diff --git a/xen/common/physdev.c b/xen/common/physdev.c index 8d44b20db8..7390d5d584 100644 --- a/xen/common/physdev.c +++ b/xen/common/physdev.c @@ -19,6 +19,9 @@ ret_t do_physdev_op(int cmd, XEN_GUEST_HANDLE_PARAM(void) arg) struct pci_dev_info pdev_info; nodeid_t node; + if ( !is_pci_passthrough_enabled() ) + return -ENOSYS; + ret = -EFAULT; if ( copy_from_guest(&add, arg, 1) != 0 ) break; @@ -54,6 +57,9 @@ ret_t do_physdev_op(int cmd, XEN_GUEST_HANDLE_PARAM(void) arg) case PHYSDEVOP_pci_device_remove: { struct physdev_pci_device dev; + if ( !is_pci_passthrough_enabled() ) + return -ENOSYS; + ret = -EFAULT; if ( copy_from_guest(&dev, arg, 1) != 0 ) break; diff --git a/xen/include/asm-arm/pci.h b/xen/include/asm-arm/pci.h index 7dd9eb3dba..f2f86be9bc 100644 --- a/xen/include/asm-arm/pci.h +++ b/xen/include/asm-arm/pci.h @@ -19,14 +19,27 @@ #define pci_to_dev(pcidev) (&(pcidev)->arch.dev) +extern bool_t pci_passthrough_enabled; + /* Arch pci dev struct */ struct arch_pci_dev { struct device dev; }; +static always_inline bool is_pci_passthrough_enabled(void) +{ + return pci_passthrough_enabled; +} #else /*!CONFIG_HAS_PCI*/ +#define pci_passthrough_enabled (false) + struct arch_pci_dev { }; +static always_inline bool is_pci_passthrough_enabled(void) +{ + return false; +} + #endif /*!CONFIG_HAS_PCI*/ #endif /* __ARM_PCI_H__ */ diff --git a/xen/include/asm-x86/pci.h b/xen/include/asm-x86/pci.h index cc05045e9c..0e160c6d01 100644 --- a/xen/include/asm-x86/pci.h +++ b/xen/include/asm-x86/pci.h @@ -32,4 +32,12 @@ bool_t pci_ro_mmcfg_decode(unsigned long mfn, unsigned int *seg, extern int pci_mmcfg_config_num; extern struct acpi_mcfg_allocation *pci_mmcfg_config; +/* + * Unlike ARM, PCI passthrough always enabled for x86. + */ +static always_inline bool is_pci_passthrough_enabled(void) +{ + return true; +} + #endif /* __X86_PCI_H__ */ From patchwork Wed Sep 22 11:34:57 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Rahul Singh X-Patchwork-Id: 12510347 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 602BFC433F5 for ; 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Wed, 22 Sep 2021 11:39:47 +0000 Received: by outflank-mailman (input) for mailman id 192593; Wed, 22 Sep 2021 11:39:46 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mT0bK-0002Ir-9B for xen-devel@lists.xenproject.org; Wed, 22 Sep 2021 11:39:46 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTP id c8406eae-1b99-11ec-b970-12813bfff9fa; Wed, 22 Sep 2021 11:39:44 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 57E1711B3; Wed, 22 Sep 2021 04:39:44 -0700 (PDT) Received: from e109506.cambridge.arm.com (e109506.cambridge.arm.com [10.1.199.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 3A0E53F719; Wed, 22 Sep 2021 04:39:43 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: c8406eae-1b99-11ec-b970-12813bfff9fa From: Rahul Singh To: xen-devel@lists.xenproject.org Cc: bertrand.marquis@arm.com, rahul.singh@arm.com, andre.przywara@arm.com, Stefano Stabellini , Julien Grall , Volodymyr Babchuk Subject: [PATCH v2 11/17] xen/arm: PCI host bridge discovery within XEN on ARM Date: Wed, 22 Sep 2021 12:34:57 +0100 Message-Id: X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: MIME-Version: 1.0 XEN during boot will read the PCI device tree node “reg” property and will map the PCI config space to the XEN memory. As of now only "pci-host-ecam-generic" compatible board is supported. "linux,pci-domain" device tree property assigns a fixed PCI domain number to a host bridge, otherwise an unstable (across boots) unique number will be assigned by Linux. XEN access the PCI devices based on Segment:Bus:Device:Function. Segment number in XEN is same as domain number in Linux.Segment number and domain number has to be in sync to access the correct PCI devices. XEN will read the “linux,pci-domain” property from the device tree node and configure the host bridge segment number accordingly. If this property is not available XEN will allocate the unique segment number to the host bridge. dt_pci_bus_find_domain_nr(..) imported from the Linux source tree with slight modification based on tag Linux v5.14.2 commit bbdd3de144fc142f2f4b9834c9241cc4e7f3d3fc. Signed-off-by: Rahul Singh --- Change in v2: - Add more info in commit msg - Add callback to parse register index. - Merge patch pci_ecam_operation into this patch to avoid confusion - Add new struct in struct device for match table --- xen/arch/arm/device.c | 2 + xen/arch/arm/pci/Makefile | 5 + xen/arch/arm/pci/ecam.c | 60 +++++++ xen/arch/arm/pci/pci-access.c | 83 +++++++++ xen/arch/arm/pci/pci-host-common.c | 254 ++++++++++++++++++++++++++++ xen/arch/arm/pci/pci-host-generic.c | 42 +++++ xen/include/asm-arm/device.h | 2 + xen/include/asm-arm/pci.h | 59 +++++++ 8 files changed, 507 insertions(+) create mode 100644 xen/arch/arm/pci/ecam.c create mode 100644 xen/arch/arm/pci/pci-access.c create mode 100644 xen/arch/arm/pci/pci-host-common.c create mode 100644 xen/arch/arm/pci/pci-host-generic.c diff --git a/xen/arch/arm/device.c b/xen/arch/arm/device.c index 70cd6c1a19..197bb3c6e8 100644 --- a/xen/arch/arm/device.c +++ b/xen/arch/arm/device.c @@ -44,6 +44,8 @@ int __init device_init(struct dt_device_node *dev, enum device_class class, { ASSERT(desc->init != NULL); + dev->dev.of_match_table = desc->dt_match; + return desc->init(dev, data); } diff --git a/xen/arch/arm/pci/Makefile b/xen/arch/arm/pci/Makefile index a98035df4c..e86f2b46fd 100644 --- a/xen/arch/arm/pci/Makefile +++ b/xen/arch/arm/pci/Makefile @@ -1 +1,6 @@ obj-y += pci.o +obj-y += pci-access.o +obj-y += pci.o +obj-y += pci-host-generic.o +obj-y += pci-host-common.o +obj-y += ecam.o diff --git a/xen/arch/arm/pci/ecam.c b/xen/arch/arm/pci/ecam.c new file mode 100644 index 0000000000..9b88b1ceda --- /dev/null +++ b/xen/arch/arm/pci/ecam.c @@ -0,0 +1,60 @@ +/* + * Based on Linux drivers/pci/ecam.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include +#include + +/* + * Function to implement the pci_ops ->map_bus method. + */ +void __iomem *pci_ecam_map_bus(struct pci_host_bridge *bridge, + uint32_t sbdf, uint32_t where) +{ + const struct pci_config_window *cfg = bridge->cfg; + const struct pci_ecam_ops *ops = bridge->sysdata; + unsigned int devfn_shift = ops->bus_shift - 8; + void __iomem *base; + + unsigned int busn = PCI_BUS(sbdf); + + if ( busn < cfg->busn_start || busn > cfg->busn_end ) + return NULL; + + busn -= cfg->busn_start; + base = cfg->win + (busn << ops->bus_shift); + + return base + (PCI_DEVFN2(sbdf) << devfn_shift) + where; +} + +/* ECAM ops */ +const struct pci_ecam_ops pci_generic_ecam_ops = { + .bus_shift = 20, + .pci_ops = { + .map_bus = pci_ecam_map_bus, + .read = pci_generic_config_read, + .write = pci_generic_config_write, + } +}; + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * tab-width: 4 + * indent-tabs-mode: nil + * End: + */ diff --git a/xen/arch/arm/pci/pci-access.c b/xen/arch/arm/pci/pci-access.c new file mode 100644 index 0000000000..04fe9fbf92 --- /dev/null +++ b/xen/arch/arm/pci/pci-access.c @@ -0,0 +1,83 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include +#include + +#define INVALID_VALUE (~0U) + +int pci_generic_config_read(struct pci_host_bridge *bridge, uint32_t sbdf, + uint32_t reg, uint32_t len, uint32_t *value) +{ + void __iomem *addr = bridge->ops->map_bus(bridge, sbdf, reg); + + if ( !addr ) + { + *value = INVALID_VALUE; + return -ENODEV; + } + + switch ( len ) + { + case 1: + *value = readb(addr); + break; + case 2: + *value = readw(addr); + break; + case 4: + *value = readl(addr); + break; + default: + ASSERT_UNREACHABLE(); + } + + return 0; +} + +int pci_generic_config_write(struct pci_host_bridge *bridge, uint32_t sbdf, + uint32_t reg, uint32_t len, uint32_t value) +{ + void __iomem *addr = bridge->ops->map_bus(bridge, sbdf, reg); + + if ( !addr ) + return -ENODEV; + + switch ( len ) + { + case 1: + writeb(value, addr); + break; + case 2: + writew(value, addr); + break; + case 4: + writel(value, addr); + break; + default: + ASSERT_UNREACHABLE(); + } + + return 0; +} + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * tab-width: 4 + * indent-tabs-mode: nil + * End: + */ diff --git a/xen/arch/arm/pci/pci-host-common.c b/xen/arch/arm/pci/pci-host-common.c new file mode 100644 index 0000000000..4beec14f2f --- /dev/null +++ b/xen/arch/arm/pci/pci-host-common.c @@ -0,0 +1,254 @@ +/* + * Based on Linux drivers/pci/ecam.c + * Based on Linux drivers/pci/controller/pci-host-common.c + * Based on Linux drivers/pci/controller/pci-host-generic.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include +#include +#include +#include +#include + +/* + * List for all the pci host bridges. + */ + +static LIST_HEAD(pci_host_bridges); + +static atomic_t domain_nr = ATOMIC_INIT(-1); + +static inline void __iomem *pci_remap_cfgspace(paddr_t start, size_t len) +{ + return ioremap_nocache(start, len); +} + +static void pci_ecam_free(struct pci_config_window *cfg) +{ + if ( cfg->win ) + iounmap(cfg->win); + + xfree(cfg); +} + +static struct pci_config_window * __init +gen_pci_init(struct dt_device_node *dev, const struct pci_ecam_ops *ops) +{ + int err, cfg_reg_idx; + u32 bus_range[2]; + paddr_t addr, size; + struct pci_config_window *cfg; + + cfg = xzalloc(struct pci_config_window); + if ( !cfg ) + return NULL; + + err = dt_property_read_u32_array(dev, "bus-range", bus_range, + ARRAY_SIZE(bus_range)); + if ( err ) { + cfg->busn_start = 0; + cfg->busn_end = 0xff; + printk(XENLOG_INFO "%s: No bus range found for pci controller\n", + dt_node_full_name(dev)); + } else { + cfg->busn_start = bus_range[0]; + cfg->busn_end = bus_range[1]; + if ( cfg->busn_end > cfg->busn_start + 0xff ) + cfg->busn_end = cfg->busn_start + 0xff; + } + + if ( ops->cfg_reg_index ) + { + cfg_reg_idx = ops->cfg_reg_index(dev); + if ( cfg_reg_idx < 0 ) + goto err_exit; + } + else + cfg_reg_idx = 0; + + /* Parse our PCI ecam register address */ + err = dt_device_get_address(dev, cfg_reg_idx, &addr, &size); + if ( err ) + goto err_exit; + + cfg->phys_addr = addr; + cfg->size = size; + + /* + * On 64-bit systems, we do a single ioremap for the whole config space + * since we have enough virtual address range available. On 32-bit, we + * ioremap the config space for each bus individually. + * As of now only 64-bit is supported 32-bit is not supported. + * + * TODO: For 32-bit implement the ioremap/iounmap of config space + * dynamically for each read/write call. + */ + cfg->win = pci_remap_cfgspace(cfg->phys_addr, cfg->size); + if ( !cfg->win ) + goto err_exit_remap; + + printk("ECAM at [mem 0x%"PRIpaddr"-0x%"PRIpaddr"] for [bus %x-%x] \n", + cfg->phys_addr, cfg->phys_addr + cfg->size - 1, + cfg->busn_start, cfg->busn_end); + + if ( ops->init ) + { + err = ops->init(cfg); + if (err) + goto err_exit; + } + + return cfg; + +err_exit_remap: + printk(XENLOG_ERR "ECAM ioremap failed\n"); +err_exit: + pci_ecam_free(cfg); + + return NULL; +} + +struct pci_host_bridge *pci_alloc_host_bridge(void) +{ + struct pci_host_bridge *bridge = xzalloc(struct pci_host_bridge); + + if ( !bridge ) + return NULL; + + INIT_LIST_HEAD(&bridge->node); + bridge->bus_start = UINT8_MAX; + bridge->bus_end = UINT8_MAX; + + return bridge; +} + +void pci_add_host_bridge(struct pci_host_bridge *bridge) +{ + list_add_tail(&bridge->node, &pci_host_bridges); +} + +static int pci_get_new_domain_nr(void) +{ + return atomic_inc_return(&domain_nr); +} + +static int pci_bus_find_domain_nr(struct dt_device_node *dev) +{ + static int use_dt_domains = -1; + int domain; + + domain = dt_get_pci_domain_nr(dev); + + /* + * Check DT domain and use_dt_domains values. + * + * If DT domain property is valid (domain >= 0) and + * use_dt_domains != 0, the DT assignment is valid since this means + * we have not previously allocated a domain number by using + * pci_get_new_domain_nr(); we should also update use_dt_domains to + * 1, to indicate that we have just assigned a domain number from + * DT. + * + * If DT domain property value is not valid (ie domain < 0), and we + * have not previously assigned a domain number from DT + * (use_dt_domains != 1) we should assign a domain number by + * using the: + * + * pci_get_new_domain_nr() + * + * API and update the use_dt_domains value to keep track of method we + * are using to assign domain numbers (use_dt_domains = 0). + * + * All other combinations imply we have a platform that is trying + * to mix domain numbers obtained from DT and pci_get_new_domain_nr(), + * which is a recipe for domain mishandling and it is prevented by + * invalidating the domain value (domain = -1) and printing a + * corresponding error. + */ + if ( domain >= 0 && use_dt_domains ) + { + use_dt_domains = 1; + } + else if ( domain < 0 && use_dt_domains != 1 ) + { + use_dt_domains = 0; + domain = pci_get_new_domain_nr(); + } + else + { + domain = -1; + } + + return domain; +} + +int pci_host_common_probe(struct dt_device_node *dev, const void *data) +{ + struct pci_host_bridge *bridge; + struct pci_config_window *cfg; + struct pci_ecam_ops *ops; + const struct dt_device_match *of_id; + int err; + + if ( dt_device_for_passthrough(dev) ) + return 0; + + of_id = dt_match_node(dev->dev.of_match_table, dev->dev.of_node); + ops = (struct pci_ecam_ops *) of_id->data; + + bridge = pci_alloc_host_bridge(); + if ( !bridge ) + return -ENOMEM; + + /* Parse and map our Configuration Space windows */ + cfg = gen_pci_init(dev, ops); + if ( !cfg ) + { + err = -ENOMEM; + goto err_exit; + } + + bridge->dt_node = dev; + bridge->cfg = cfg; + bridge->sysdata = ops; + bridge->ops = &ops->pci_ops; + bridge->bus_start = cfg->busn_start; + bridge->bus_end = cfg->busn_end; + + bridge->segment = pci_bus_find_domain_nr(dev); + if ( bridge->segment < 0 ) + { + printk(XENLOG_ERR "Inconsistent \"linux,pci-domain\" property in DT\n"); + BUG(); + } + pci_add_host_bridge(bridge); + + return 0; + +err_exit: + xfree(bridge); + + return err; +} + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * tab-width: 4 + * indent-tabs-mode: nil + * End: + */ diff --git a/xen/arch/arm/pci/pci-host-generic.c b/xen/arch/arm/pci/pci-host-generic.c new file mode 100644 index 0000000000..6b3288d6f3 --- /dev/null +++ b/xen/arch/arm/pci/pci-host-generic.c @@ -0,0 +1,42 @@ +/* + * Based on Linux drivers/pci/controller/pci-host-common.c + * Based on Linux drivers/pci/controller/pci-host-generic.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include +#include +#include + +static const struct dt_device_match gen_pci_dt_match[] = { + { .compatible = "pci-host-ecam-generic", + .data = &pci_generic_ecam_ops }, + + { }, +}; + +DT_DEVICE_START(pci_gen, "PCI HOST GENERIC", DEVICE_PCI) +.dt_match = gen_pci_dt_match, +.init = pci_host_common_probe, +DT_DEVICE_END + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * tab-width: 4 + * indent-tabs-mode: nil + * End: + */ diff --git a/xen/include/asm-arm/device.h b/xen/include/asm-arm/device.h index 5ecd5e7bd1..582119c31e 100644 --- a/xen/include/asm-arm/device.h +++ b/xen/include/asm-arm/device.h @@ -16,6 +16,8 @@ struct device enum device_type type; #ifdef CONFIG_HAS_DEVICE_TREE struct dt_device_node *of_node; /* Used by drivers imported from Linux */ + /* Used by drivers imported from Linux */ + const struct dt_device_match *of_match_table; #endif struct dev_archdata archdata; struct iommu_fwspec *iommu_fwspec; /* per-device IOMMU instance data */ diff --git a/xen/include/asm-arm/pci.h b/xen/include/asm-arm/pci.h index f2f86be9bc..4b32c7088a 100644 --- a/xen/include/asm-arm/pci.h +++ b/xen/include/asm-arm/pci.h @@ -26,6 +26,65 @@ struct arch_pci_dev { struct device dev; }; +/* + * struct to hold the mappings of a config space window. This + * is expected to be used as sysdata for PCI controllers that + * use ECAM. + */ +struct pci_config_window { + paddr_t phys_addr; + paddr_t size; + uint8_t busn_start; + uint8_t busn_end; + void __iomem *win; +}; + +/* + * struct to hold pci host bridge information + * for a PCI controller. + */ +struct pci_host_bridge { + struct dt_device_node *dt_node; /* Pointer to the associated DT node */ + struct list_head node; /* Node in list of host bridges */ + uint16_t segment; /* Segment number */ + uint8_t bus_start; /* Bus start of this bridge. */ + uint8_t bus_end; /* Bus end of this bridge. */ + struct pci_config_window* cfg; /* Pointer to the bridge config window */ + void *sysdata; /* Pointer to the config space window*/ + const struct pci_ops *ops; +}; + +struct pci_ops { + void __iomem *(*map_bus)(struct pci_host_bridge *bridge, uint32_t sbdf, + uint32_t offset); + int (*read)(struct pci_host_bridge *bridge, uint32_t sbdf, + uint32_t reg, uint32_t len, uint32_t *value); + int (*write)(struct pci_host_bridge *bridge, uint32_t sbdf, + uint32_t reg, uint32_t len, uint32_t value); +}; + +/* + * struct to hold pci ops and bus shift of the config window + * for a PCI controller. + */ +struct pci_ecam_ops { + unsigned int bus_shift; + struct pci_ops pci_ops; + int (*cfg_reg_index)(struct dt_device_node *dev); + int (*init)(struct pci_config_window *); +}; + +/* Default ECAM ops */ +extern const struct pci_ecam_ops pci_generic_ecam_ops; + +int pci_host_common_probe(struct dt_device_node *dev, const void *data); +int pci_generic_config_read(struct pci_host_bridge *bridge, uint32_t sbdf, + uint32_t reg, uint32_t len, uint32_t *value); +int pci_generic_config_write(struct pci_host_bridge *bridge, uint32_t sbdf, + uint32_t reg, uint32_t len, uint32_t value); +void __iomem *pci_ecam_map_bus(struct pci_host_bridge *bridge, + uint32_t sbdf, uint32_t where); + static always_inline bool is_pci_passthrough_enabled(void) { return pci_passthrough_enabled; From patchwork Wed Sep 22 11:34:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rahul Singh X-Patchwork-Id: 12510349 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3C263C433F5 for ; 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Wed, 22 Sep 2021 11:39:58 +0000 Received: by outflank-mailman (input) for mailman id 192597; Wed, 22 Sep 2021 11:39:56 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mT0bU-0002Ir-82 for xen-devel@lists.xenproject.org; Wed, 22 Sep 2021 11:39:56 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTP id ce3e93e4-1b99-11ec-b970-12813bfff9fa; Wed, 22 Sep 2021 11:39:54 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 70A3011B3; Wed, 22 Sep 2021 04:39:54 -0700 (PDT) Received: from e109506.cambridge.arm.com (e109506.cambridge.arm.com [10.1.199.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 55E663F719; Wed, 22 Sep 2021 04:39:53 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: ce3e93e4-1b99-11ec-b970-12813bfff9fa From: Rahul Singh To: xen-devel@lists.xenproject.org Cc: bertrand.marquis@arm.com, rahul.singh@arm.com, andre.przywara@arm.com, Oleksandr Andrushchenko , Stefano Stabellini , Julien Grall , Volodymyr Babchuk Subject: [PATCH v2 12/17] xen/arm: Add support for Xilinx ZynqMP PCI host controller Date: Wed, 22 Sep 2021 12:34:58 +0100 Message-Id: <4b2b04ab1dbc1a5c52bf54c399cdb6cf454183ea.1632307952.git.rahul.singh@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: From: Oleksandr Andrushchenko Add support for Xilinx ZynqMP PCI host controller to map the PCI config space to the XEN memory. Patch helps to understand how the generic infrastructure for PCI host-bridge discovery will be used for future references. Signed-off-by: Oleksandr Andrushchenko --- Change on v2: - Add more info in commit msg --- xen/arch/arm/pci/Makefile | 1 + xen/arch/arm/pci/pci-host-zynqmp.c | 58 ++++++++++++++++++++++++++++++ 2 files changed, 59 insertions(+) create mode 100644 xen/arch/arm/pci/pci-host-zynqmp.c diff --git a/xen/arch/arm/pci/Makefile b/xen/arch/arm/pci/Makefile index e86f2b46fd..0572c68bba 100644 --- a/xen/arch/arm/pci/Makefile +++ b/xen/arch/arm/pci/Makefile @@ -4,3 +4,4 @@ obj-y += pci.o obj-y += pci-host-generic.o obj-y += pci-host-common.o obj-y += ecam.o +obj-y += pci-host-zynqmp.o diff --git a/xen/arch/arm/pci/pci-host-zynqmp.c b/xen/arch/arm/pci/pci-host-zynqmp.c new file mode 100644 index 0000000000..c27b4ea9f0 --- /dev/null +++ b/xen/arch/arm/pci/pci-host-zynqmp.c @@ -0,0 +1,58 @@ +/* + * Based on Linux drivers/pci/controller/pci-host-common.c + * Based on Linux drivers/pci/controller/pci-host-generic.c + * Based on xen/arch/arm/pci/pci-host-generic.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include +#include +#include + +int nwl_cfg_reg_index(struct dt_device_node *np) +{ + return dt_property_match_string(np, "reg-names", "cfg"); +} + +/* ECAM ops */ +const struct pci_ecam_ops nwl_pcie_ops = { + .bus_shift = 20, + .cfg_reg_index = nwl_cfg_reg_index, + .pci_ops = { + .map_bus = pci_ecam_map_bus, + .read = pci_generic_config_read, + .write = pci_generic_config_write, + } +}; + +static const struct dt_device_match nwl_pcie_dt_match[] = { + { .compatible = "xlnx,nwl-pcie-2.11", + .data = &nwl_pcie_ops }, + { }, +}; + +DT_DEVICE_START(pci_gen, "PCI HOST ZYNQMP", DEVICE_PCI) +.dt_match = nwl_pcie_dt_match, +.init = pci_host_common_probe, +DT_DEVICE_END + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * tab-width: 4 + * indent-tabs-mode: nil + * End: + */ From patchwork Wed Sep 22 11:34:59 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rahul Singh X-Patchwork-Id: 12510351 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F2D53C433EF for ; Wed, 22 Sep 2021 11:40:32 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B4DB560EE7 for ; Wed, 22 Sep 2021 11:40:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org B4DB560EE7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.192611.343136 (Exim 4.92) (envelope-from ) id 1mT0bx-0004Hv-DW; Wed, 22 Sep 2021 11:40:25 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 192611.343136; Wed, 22 Sep 2021 11:40:25 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mT0bx-0004Ho-AJ; Wed, 22 Sep 2021 11:40:25 +0000 Received: by outflank-mailman (input) for mailman id 192611; Wed, 22 Sep 2021 11:40:24 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mT0bv-0004AV-Ue for xen-devel@lists.xenproject.org; Wed, 22 Sep 2021 11:40:23 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-rack-iad1.inumbo.com (Halon) with ESMTP id 5d221a6b-b1a8-40fb-9927-c7c79fe36240; Wed, 22 Sep 2021 11:40:18 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id B735D11B3; Wed, 22 Sep 2021 04:40:18 -0700 (PDT) Received: from e109506.cambridge.arm.com (e109506.cambridge.arm.com [10.1.199.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id B5B3C3F719; Wed, 22 Sep 2021 04:40:17 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 5d221a6b-b1a8-40fb-9927-c7c79fe36240 From: Rahul Singh To: xen-devel@lists.xenproject.org Cc: bertrand.marquis@arm.com, rahul.singh@arm.com, andre.przywara@arm.com, Stefano Stabellini , Julien Grall , Volodymyr Babchuk Subject: [PATCH v2 13/17] xen:arm: Implement pci access functions Date: Wed, 22 Sep 2021 12:34:59 +0100 Message-Id: X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: Implement generic pci access functions to read/write the configuration space. Signed-off-by: Rahul Singh --- Change in v2: Fixed comments --- xen/arch/arm/pci/pci-access.c | 58 ++++++++++++++++++++++++++++++ xen/arch/arm/pci/pci-host-common.c | 19 ++++++++++ xen/include/asm-arm/pci.h | 2 ++ 3 files changed, 79 insertions(+) diff --git a/xen/arch/arm/pci/pci-access.c b/xen/arch/arm/pci/pci-access.c index 04fe9fbf92..45500cec2a 100644 --- a/xen/arch/arm/pci/pci-access.c +++ b/xen/arch/arm/pci/pci-access.c @@ -16,6 +16,7 @@ #include #define INVALID_VALUE (~0U) +#define PCI_ERR_VALUE(len) GENMASK(0, len * 8) int pci_generic_config_read(struct pci_host_bridge *bridge, uint32_t sbdf, uint32_t reg, uint32_t len, uint32_t *value) @@ -72,6 +73,63 @@ int pci_generic_config_write(struct pci_host_bridge *bridge, uint32_t sbdf, return 0; } +static uint32_t pci_config_read(pci_sbdf_t sbdf, unsigned int reg, + unsigned int len) +{ + uint32_t val = PCI_ERR_VALUE(len); + + struct pci_host_bridge *bridge = pci_find_host_bridge(sbdf.seg, sbdf.bus); + + if ( unlikely(!bridge) ) + return val; + + if ( unlikely(!bridge->ops->read) ) + return val; + + bridge->ops->read(bridge, (uint32_t) sbdf.sbdf, reg, len, &val); + + return val; +} + +static void pci_config_write(pci_sbdf_t sbdf, unsigned int reg, + unsigned int len, uint32_t val) +{ + struct pci_host_bridge *bridge = pci_find_host_bridge(sbdf.seg, sbdf.bus); + + if ( unlikely(!bridge) ) + return; + + if ( unlikely(!bridge->ops->write) ) + return; + + bridge->ops->write(bridge, (uint32_t) sbdf.sbdf, reg, len, val); +} + +/* + * Wrappers for all PCI configuration access functions. + */ + +#define PCI_OP_WRITE(size, type) \ + void pci_conf_write##size(pci_sbdf_t sbdf, \ + unsigned int reg, type val) \ +{ \ + pci_config_write(sbdf, reg, size / 8, val); \ +} + +#define PCI_OP_READ(size, type) \ + type pci_conf_read##size(pci_sbdf_t sbdf, \ + unsigned int reg) \ +{ \ + return pci_config_read(sbdf, reg, size / 8); \ +} + +PCI_OP_READ(8, uint8_t) +PCI_OP_READ(16, uint16_t) +PCI_OP_READ(32, uint32_t) +PCI_OP_WRITE(8, uint8_t) +PCI_OP_WRITE(16, uint16_t) +PCI_OP_WRITE(32, uint32_t) + /* * Local variables: * mode: C diff --git a/xen/arch/arm/pci/pci-host-common.c b/xen/arch/arm/pci/pci-host-common.c index 4beec14f2f..3bdc336268 100644 --- a/xen/arch/arm/pci/pci-host-common.c +++ b/xen/arch/arm/pci/pci-host-common.c @@ -243,6 +243,25 @@ err_exit: return err; } +/* + * This function will lookup an hostbridge based on the segment and bus + * number. + */ +struct pci_host_bridge *pci_find_host_bridge(uint16_t segment, uint8_t bus) +{ + struct pci_host_bridge *bridge; + + list_for_each_entry( bridge, &pci_host_bridges, node ) + { + if ( bridge->segment != segment ) + continue; + if ( (bus < bridge->bus_start) || (bus > bridge->bus_end) ) + continue; + return bridge; + } + + return NULL; +} /* * Local variables: * mode: C diff --git a/xen/include/asm-arm/pci.h b/xen/include/asm-arm/pci.h index 4b32c7088a..5406daecda 100644 --- a/xen/include/asm-arm/pci.h +++ b/xen/include/asm-arm/pci.h @@ -18,6 +18,7 @@ #ifdef CONFIG_HAS_PCI #define pci_to_dev(pcidev) (&(pcidev)->arch.dev) +#define PRI_pci "%04x:%02x:%02x.%u" extern bool_t pci_passthrough_enabled; @@ -84,6 +85,7 @@ int pci_generic_config_write(struct pci_host_bridge *bridge, uint32_t sbdf, uint32_t reg, uint32_t len, uint32_t value); void __iomem *pci_ecam_map_bus(struct pci_host_bridge *bridge, uint32_t sbdf, uint32_t where); +struct pci_host_bridge *pci_find_host_bridge(uint16_t segment, uint8_t bus); static always_inline bool is_pci_passthrough_enabled(void) { From patchwork Wed Sep 22 11:35:00 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Rahul Singh X-Patchwork-Id: 12510353 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 16B7EC433FE for ; Wed, 22 Sep 2021 11:40:40 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DB01760FA0 for ; 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Wed, 22 Sep 2021 11:40:30 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTP id e2d797c4-1b99-11ec-b970-12813bfff9fa; Wed, 22 Sep 2021 11:40:29 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 089086D; Wed, 22 Sep 2021 04:40:29 -0700 (PDT) Received: from e109506.cambridge.arm.com (e109506.cambridge.arm.com [10.1.199.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 41F453F719; Wed, 22 Sep 2021 04:40:27 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: e2d797c4-1b99-11ec-b970-12813bfff9fa From: Rahul Singh To: xen-devel@lists.xenproject.org Cc: bertrand.marquis@arm.com, rahul.singh@arm.com, andre.przywara@arm.com, Stefano Stabellini , Julien Grall , Volodymyr Babchuk , Andrew Cooper , George Dunlap , Ian Jackson , Jan Beulich , Wei Liu , Paul Durrant , =?utf-8?q?Roger_Pau_Monn=C3=A9?= Subject: [PATCH v2 14/17] xen/arm: Enable the existing x86 virtual PCI support for ARM. Date: Wed, 22 Sep 2021 12:35:00 +0100 Message-Id: <06e0cf146ca4d82526282c1960177fad97346ad5.1632307952.git.rahul.singh@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: MIME-Version: 1.0 The existing VPCI support available for X86 is adapted for Arm. When the device is added to XEN via the hyper call “PHYSDEVOP_pci_device_add”, VPCI handler for the config space access is added to the Xen to emulate the PCI devices config space. A MMIO trap handler for the PCI ECAM space is registered in XEN so that when guest is trying to access the PCI config space,XEN will trap the access and emulate read/write using the VPCI and not the real PCI hardware. For Dom0less systems scan_pci_devices() would be used to discover the PCI device in XEN and VPCI handler will be added during XEN boots. Signed-off-by: Rahul Singh --- Change in v2: - Add new XEN_DOMCTL_CDF_vpci flag - modify has_vpci() to include XEN_DOMCTL_CDF_vpci - enable vpci support when pci-passthough option is enabled. --- xen/arch/arm/Makefile | 1 + xen/arch/arm/domain.c | 6 +- xen/arch/arm/domain_build.c | 3 + xen/arch/arm/vpci.c | 102 ++++++++++++++++++++++++++++++++++ xen/arch/arm/vpci.h | 36 ++++++++++++ xen/common/domain.c | 2 +- xen/drivers/passthrough/pci.c | 12 ++++ xen/include/asm-arm/domain.h | 8 ++- xen/include/asm-x86/pci.h | 2 - xen/include/public/arch-arm.h | 7 +++ xen/include/public/domctl.h | 4 +- xen/include/xen/pci.h | 2 + 12 files changed, 179 insertions(+), 6 deletions(-) create mode 100644 xen/arch/arm/vpci.c create mode 100644 xen/arch/arm/vpci.h diff --git a/xen/arch/arm/Makefile b/xen/arch/arm/Makefile index 44d7cc81fa..fb9c976ea2 100644 --- a/xen/arch/arm/Makefile +++ b/xen/arch/arm/Makefile @@ -7,6 +7,7 @@ ifneq ($(CONFIG_NO_PLAT),y) obj-y += platforms/ endif obj-$(CONFIG_TEE) += tee/ +obj-$(CONFIG_HAS_VPCI) += vpci.o obj-$(CONFIG_HAS_ALTERNATIVE) += alternative.o obj-y += bootfdt.init.o diff --git a/xen/arch/arm/domain.c b/xen/arch/arm/domain.c index 19c756ac3d..f7ed130023 100644 --- a/xen/arch/arm/domain.c +++ b/xen/arch/arm/domain.c @@ -39,6 +39,7 @@ #include #include +#include "vpci.h" #include "vuart.h" DEFINE_PER_CPU(struct vcpu *, curr_vcpu); @@ -623,7 +624,7 @@ int arch_sanitise_domain_config(struct xen_domctl_createdomain *config) unsigned int max_vcpus; /* HVM and HAP must be set. IOMMU may or may not be */ - if ( (config->flags & ~XEN_DOMCTL_CDF_iommu) != + if ( (config->flags & ~XEN_DOMCTL_CDF_iommu & ~XEN_DOMCTL_CDF_vpci) != (XEN_DOMCTL_CDF_hvm | XEN_DOMCTL_CDF_hap) ) { dprintk(XENLOG_INFO, "Unsupported configuration %#x\n", @@ -767,6 +768,9 @@ int arch_domain_create(struct domain *d, if ( is_hardware_domain(d) && (rc = domain_vuart_init(d)) ) goto fail; + if ( (rc = domain_vpci_init(d)) != 0 ) + goto fail; + return 0; fail: diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c index d233d634c1..5eb83b12a1 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arch/arm/domain_build.c @@ -2773,6 +2773,9 @@ void __init create_dom0(void) if ( iommu_enabled ) dom0_cfg.flags |= XEN_DOMCTL_CDF_iommu; + if ( pci_passthrough_enabled ) + dom0_cfg.flags |= XEN_DOMCTL_CDF_vpci; + dom0 = domain_create(0, &dom0_cfg, true); if ( IS_ERR(dom0) || (alloc_dom0_vcpu0(dom0) == NULL) ) panic("Error creating domain 0\n"); diff --git a/xen/arch/arm/vpci.c b/xen/arch/arm/vpci.c new file mode 100644 index 0000000000..76c12b9281 --- /dev/null +++ b/xen/arch/arm/vpci.c @@ -0,0 +1,102 @@ +/* + * xen/arch/arm/vpci.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#include + +#include + +#define REGISTER_OFFSET(addr) ( (addr) & 0x00000fff) + +/* Do some sanity checks. */ +static bool vpci_mmio_access_allowed(unsigned int reg, unsigned int len) +{ + /* Check access size. */ + if ( len > 8 ) + return false; + + /* Check that access is size aligned. */ + if ( (reg & (len - 1)) ) + return false; + + return true; +} + +static int vpci_mmio_read(struct vcpu *v, mmio_info_t *info, + register_t *r, void *p) +{ + unsigned int reg; + pci_sbdf_t sbdf; + unsigned long data = ~0UL; + unsigned int size = 1U << info->dabt.size; + + sbdf.sbdf = MMCFG_BDF(info->gpa); + reg = REGISTER_OFFSET(info->gpa); + + if ( !vpci_mmio_access_allowed(reg, size) ) + return 0; + + data = vpci_read(sbdf, reg, min(4u, size)); + if ( size == 8 ) + data |= (uint64_t)vpci_read(sbdf, reg + 4, 4) << 32; + + *r = data; + + return 1; +} + +static int vpci_mmio_write(struct vcpu *v, mmio_info_t *info, + register_t r, void *p) +{ + unsigned int reg; + pci_sbdf_t sbdf; + unsigned long data = r; + unsigned int size = 1U << info->dabt.size; + + sbdf.sbdf = MMCFG_BDF(info->gpa); + reg = REGISTER_OFFSET(info->gpa); + + if ( !vpci_mmio_access_allowed(reg, size) ) + return 0; + + vpci_write(sbdf, reg, min(4u, size), data); + if ( size == 8 ) + vpci_write(sbdf, reg + 4, 4, data >> 32); + + return 1; +} + +static const struct mmio_handler_ops vpci_mmio_handler = { + .read = vpci_mmio_read, + .write = vpci_mmio_write, +}; + +int domain_vpci_init(struct domain *d) +{ + if ( !has_vpci(d) ) + return 0; + + register_mmio_handler(d, &vpci_mmio_handler, + GUEST_VPCI_ECAM_BASE, GUEST_VPCI_ECAM_SIZE, NULL); + + return 0; +} + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * indent-tabs-mode: nil + * End: + */ + diff --git a/xen/arch/arm/vpci.h b/xen/arch/arm/vpci.h new file mode 100644 index 0000000000..d8a7b0e3e8 --- /dev/null +++ b/xen/arch/arm/vpci.h @@ -0,0 +1,36 @@ +/* + * xen/arch/arm/vpci.h + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __ARCH_ARM_VPCI_H__ +#define __ARCH_ARM_VPCI_H__ + +#ifdef CONFIG_HAS_VPCI +int domain_vpci_init(struct domain *d); +#else +static inline int domain_vpci_init(struct domain *d) +{ + return 0; +} +#endif + +#endif /* __ARCH_ARM_VPCI_H__ */ + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * indent-tabs-mode: nil + * End: + */ diff --git a/xen/common/domain.c b/xen/common/domain.c index 6ee5d033b0..40d67ec342 100644 --- a/xen/common/domain.c +++ b/xen/common/domain.c @@ -483,7 +483,7 @@ static int sanitise_domain_config(struct xen_domctl_createdomain *config) ~(XEN_DOMCTL_CDF_hvm | XEN_DOMCTL_CDF_hap | XEN_DOMCTL_CDF_s3_integrity | XEN_DOMCTL_CDF_oos_off | XEN_DOMCTL_CDF_xs_domain | XEN_DOMCTL_CDF_iommu | - XEN_DOMCTL_CDF_nested_virt) ) + XEN_DOMCTL_CDF_nested_virt | XEN_DOMCTL_CDF_vpci) ) { dprintk(XENLOG_INFO, "Unknown CDF flags %#x\n", config->flags); return -EINVAL; diff --git a/xen/drivers/passthrough/pci.c b/xen/drivers/passthrough/pci.c index d774a6154e..633e89ac13 100644 --- a/xen/drivers/passthrough/pci.c +++ b/xen/drivers/passthrough/pci.c @@ -767,6 +767,18 @@ int pci_add_device(u16 seg, u8 bus, u8 devfn, else iommu_enable_device(pdev); +#ifdef CONFIG_ARM + /* + * On ARM PCI devices discovery will be done by Dom0. Add vpci handler when + * Dom0 inform XEN to add the PCI devices in XEN. + */ + ret = vpci_add_handlers(pdev); + if ( ret ) { + printk(XENLOG_ERR "setup of vPCI for failed: %d\n",ret); + goto out; + } +#endif + pci_enable_acs(pdev); out: diff --git a/xen/include/asm-arm/domain.h b/xen/include/asm-arm/domain.h index c9277b5c6d..5fb4e24adf 100644 --- a/xen/include/asm-arm/domain.h +++ b/xen/include/asm-arm/domain.h @@ -2,6 +2,7 @@ #define __ASM_DOMAIN_H__ #include +#include #include #include #include @@ -262,7 +263,12 @@ static inline void arch_vcpu_block(struct vcpu *v) {} #define arch_vm_assist_valid_mask(d) (1UL << VMASST_TYPE_runstate_update_flag) -#define has_vpci(d) ({ (void)(d); false; }) +/* + * For X86 VPCI is enabled and tested for PVH DOM0 only but + * for ARM we enable support VPCI for guest domain also. + */ +#define has_vpci(d) ((void)(d), IS_ENABLED(CONFIG_HAS_VPCI) && \ + evaluate_nospec(d->options & XEN_DOMCTL_CDF_vpci)) #endif /* __ASM_DOMAIN_H__ */ diff --git a/xen/include/asm-x86/pci.h b/xen/include/asm-x86/pci.h index 0e160c6d01..a5590557db 100644 --- a/xen/include/asm-x86/pci.h +++ b/xen/include/asm-x86/pci.h @@ -6,8 +6,6 @@ #define CF8_ADDR_HI(cf8) ( ((cf8) & 0x0f000000) >> 16) #define CF8_ENABLED(cf8) (!!((cf8) & 0x80000000)) -#define MMCFG_BDF(addr) ( ((addr) & 0x0ffff000) >> 12) - #define IS_SNB_GFX(id) (id == 0x01068086 || id == 0x01168086 \ || id == 0x01268086 || id == 0x01028086 \ || id == 0x01128086 || id == 0x01228086 \ diff --git a/xen/include/public/arch-arm.h b/xen/include/public/arch-arm.h index 6b5a5f818a..727541a321 100644 --- a/xen/include/public/arch-arm.h +++ b/xen/include/public/arch-arm.h @@ -416,6 +416,13 @@ typedef uint64_t xen_callback_t; #define GUEST_GICV3_GICR0_BASE xen_mk_ullong(0x03020000) /* vCPU0..127 */ #define GUEST_GICV3_GICR0_SIZE xen_mk_ullong(0x01000000) +/* + * 256 MB is reserved for VPCI configuration space based on calculation + * 256 buses × 32 devices × 8 functions × 4 KB = 256 MB + */ +#define GUEST_VPCI_ECAM_BASE xen_mk_ullong(0x10000000) +#define GUEST_VPCI_ECAM_SIZE xen_mk_ullong(0x10000000) + /* ACPI tables physical address */ #define GUEST_ACPI_BASE xen_mk_ullong(0x20000000) #define GUEST_ACPI_SIZE xen_mk_ullong(0x02000000) diff --git a/xen/include/public/domctl.h b/xen/include/public/domctl.h index 96696e3842..4245da3f45 100644 --- a/xen/include/public/domctl.h +++ b/xen/include/public/domctl.h @@ -70,9 +70,11 @@ struct xen_domctl_createdomain { #define XEN_DOMCTL_CDF_iommu (1U<<_XEN_DOMCTL_CDF_iommu) #define _XEN_DOMCTL_CDF_nested_virt 6 #define XEN_DOMCTL_CDF_nested_virt (1U << _XEN_DOMCTL_CDF_nested_virt) +#define _XEN_DOMCTL_CDF_vpci 7 +#define XEN_DOMCTL_CDF_vpci (1U << _XEN_DOMCTL_CDF_vpci) /* Max XEN_DOMCTL_CDF_* constant. Used for ABI checking. */ -#define XEN_DOMCTL_CDF_MAX XEN_DOMCTL_CDF_nested_virt +#define XEN_DOMCTL_CDF_MAX XEN_DOMCTL_CDF_vpci uint32_t flags; diff --git a/xen/include/xen/pci.h b/xen/include/xen/pci.h index 8e3d4d9454..2b2dfb6f1b 100644 --- a/xen/include/xen/pci.h +++ b/xen/include/xen/pci.h @@ -41,6 +41,8 @@ #define PCI_SBDF3(s,b,df) \ ((pci_sbdf_t){ .sbdf = (((s) & 0xffff) << 16) | PCI_BDF2(b, df) }) +#define MMCFG_BDF(addr) ( ((addr) & 0x0ffff000) >> 12) + typedef union { uint32_t sbdf; struct { From patchwork Wed Sep 22 11:35:01 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rahul Singh X-Patchwork-Id: 12510355 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C85EAC433EF for ; Wed, 22 Sep 2021 11:40:59 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8485C60EE7 for ; Wed, 22 Sep 2021 11:40:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 8485C60EE7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.192620.343158 (Exim 4.92) (envelope-from ) id 1mT0cJ-0005LS-Vb; Wed, 22 Sep 2021 11:40:47 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 192620.343158; Wed, 22 Sep 2021 11:40:47 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mT0cJ-0005KN-SO; Wed, 22 Sep 2021 11:40:47 +0000 Received: by outflank-mailman (input) for mailman id 192620; Wed, 22 Sep 2021 11:40:46 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mT0cI-0005IC-Aw for xen-devel@lists.xenproject.org; Wed, 22 Sep 2021 11:40:46 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTP id ec8c675e-1b99-11ec-b970-12813bfff9fa; Wed, 22 Sep 2021 11:40:45 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 317106D; Wed, 22 Sep 2021 04:40:45 -0700 (PDT) Received: from e109506.cambridge.arm.com (e109506.cambridge.arm.com [10.1.199.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 16A963F719; Wed, 22 Sep 2021 04:40:43 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: ec8c675e-1b99-11ec-b970-12813bfff9fa From: Rahul Singh To: xen-devel@lists.xenproject.org Cc: bertrand.marquis@arm.com, rahul.singh@arm.com, andre.przywara@arm.com, =?utf-8?q?Roger_Pau_Monn=C3=A9?= , Stefano Stabellini , Julien Grall , Volodymyr Babchuk Subject: [PATCH v2 15/17] xen/arm: Transitional change to build HAS_VPCI on ARM. Date: Wed, 22 Sep 2021 12:35:01 +0100 Message-Id: <0b7654cc44452575cae43c4d1700075c3a42ea2a.1632307952.git.rahul.singh@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: This patch will be reverted once we add support for VPCI MSI/MSIX support on ARM. Signed-off-by: Rahul Singh --- Change in v2: Patch introduced in v2 --- xen/drivers/vpci/Makefile | 3 ++- xen/drivers/vpci/header.c | 2 ++ xen/include/asm-arm/pci.h | 8 ++++++++ 3 files changed, 12 insertions(+), 1 deletion(-) diff --git a/xen/drivers/vpci/Makefile b/xen/drivers/vpci/Makefile index 55d1bdfda0..1a1413b93e 100644 --- a/xen/drivers/vpci/Makefile +++ b/xen/drivers/vpci/Makefile @@ -1 +1,2 @@ -obj-y += vpci.o header.o msi.o msix.o +obj-y += vpci.o header.o +obj-$(CONFIG_HAS_PCI_MSI) += msi.o msix.o diff --git a/xen/drivers/vpci/header.c b/xen/drivers/vpci/header.c index ba9a036202..f8cd55e7c0 100644 --- a/xen/drivers/vpci/header.c +++ b/xen/drivers/vpci/header.c @@ -96,8 +96,10 @@ static void modify_decoding(const struct pci_dev *pdev, uint16_t cmd, * FIXME: punching holes after the p2m has been set up might be racy for * DomU usage, needs to be revisited. */ +#ifdef CONFIG_HAS_PCI_MSI if ( map && !rom_only && vpci_make_msix_hole(pdev) ) return; +#endif for ( i = 0; i < ARRAY_SIZE(header->bars); i++ ) { diff --git a/xen/include/asm-arm/pci.h b/xen/include/asm-arm/pci.h index 5406daecda..9327b7488e 100644 --- a/xen/include/asm-arm/pci.h +++ b/xen/include/asm-arm/pci.h @@ -27,6 +27,14 @@ struct arch_pci_dev { struct device dev; }; +/* Arch-specific MSI data for vPCI. */ +struct vpci_arch_msi { +}; + +/* Arch-specific MSI-X entry data for vPCI. */ +struct vpci_arch_msix_entry { +}; + /* * struct to hold the mappings of a config space window. This * is expected to be used as sysdata for PCI controllers that From patchwork Wed Sep 22 11:35:02 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rahul Singh X-Patchwork-Id: 12510357 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BA42EC433EF for ; Wed, 22 Sep 2021 11:41:12 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 756D66112F for ; Wed, 22 Sep 2021 11:41:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 756D66112F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.192626.343169 (Exim 4.92) (envelope-from ) id 1mT0ca-0005xz-CF; Wed, 22 Sep 2021 11:41:04 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 192626.343169; Wed, 22 Sep 2021 11:41:04 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mT0ca-0005xq-96; Wed, 22 Sep 2021 11:41:04 +0000 Received: by outflank-mailman (input) for mailman id 192626; Wed, 22 Sep 2021 11:41:02 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mT0cY-0005vT-D0 for xen-devel@lists.xenproject.org; Wed, 22 Sep 2021 11:41:02 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-rack-iad1.inumbo.com (Halon) with ESMTP id 671f767b-57c4-4942-a1fc-7bfb0e738a94; Wed, 22 Sep 2021 11:41:00 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id B1AF76D; Wed, 22 Sep 2021 04:41:00 -0700 (PDT) Received: from e109506.cambridge.arm.com (e109506.cambridge.arm.com [10.1.199.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 4778C3F719; Wed, 22 Sep 2021 04:40:59 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 671f767b-57c4-4942-a1fc-7bfb0e738a94 From: Rahul Singh To: xen-devel@lists.xenproject.org Cc: bertrand.marquis@arm.com, rahul.singh@arm.com, andre.przywara@arm.com, Ian Jackson , Wei Liu , Anthony PERARD , Juergen Gross , Stefano Stabellini , Julien Grall , Volodymyr Babchuk Subject: [PATCH v2 16/17] arm/libxl: Emulated PCI device tree node in libxl Date: Wed, 22 Sep 2021 12:35:02 +0100 Message-Id: <5c66821e2333f6b27cb20a345eaf01a141a6c63b.1632307952.git.rahul.singh@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: libxl will create an emulated PCI device tree node in the device tree to enable the guest OS to discover the virtual PCI during guest boot. Emulated PCI device tree node will only be created when there is any device assigned to guest. A new area has been reserved in the arm guest physical map at which the VPCI bus is declared in the device tree (reg and ranges parameters of the node). Signed-off-by: Rahul Singh --- Change in v2: - enable doamin_vpci_init() when XEN_DOMCTL_CDF_vpci is set for domain. --- tools/include/libxl.h | 6 ++ tools/libs/light/libxl_arm.c | 105 +++++++++++++++++++++++++++++++ tools/libs/light/libxl_create.c | 3 + tools/libs/light/libxl_types.idl | 1 + tools/xl/xl_parse.c | 2 + xen/include/public/arch-arm.h | 10 +++ 6 files changed, 127 insertions(+) diff --git a/tools/include/libxl.h b/tools/include/libxl.h index b9ba16d698..3362073b21 100644 --- a/tools/include/libxl.h +++ b/tools/include/libxl.h @@ -358,6 +358,12 @@ */ #define LIBXL_HAVE_BUILDINFO_ARM_VUART 1 +/* + * LIBXL_HAVE_BUILDINFO_ARM_VPCI indicates that the toolstack supports virtual + * PCI for ARM. + */ +#define LIBXL_HAVE_BUILDINFO_ARM_VPCI 1 + /* * LIBXL_HAVE_BUILDINFO_GRANT_LIMITS indicates that libxl_domain_build_info * has the max_grant_frames and max_maptrack_frames fields. diff --git a/tools/libs/light/libxl_arm.c b/tools/libs/light/libxl_arm.c index e3140a6e00..52f1ddce48 100644 --- a/tools/libs/light/libxl_arm.c +++ b/tools/libs/light/libxl_arm.c @@ -269,6 +269,58 @@ static int fdt_property_regs(libxl__gc *gc, void *fdt, return fdt_property(fdt, "reg", regs, sizeof(regs)); } +static int fdt_property_values(libxl__gc *gc, void *fdt, + const char *name, unsigned num_cells, ...) +{ + uint32_t prop[num_cells]; + be32 *cells = &prop[0]; + int i; + va_list ap; + uint32_t arg; + + va_start(ap, num_cells); + for (i = 0 ; i < num_cells; i++) { + arg = va_arg(ap, uint32_t); + set_cell(&cells, 1, arg); + } + va_end(ap); + + return fdt_property(fdt, name, prop, sizeof(prop)); +} + +static int fdt_property_vpci_ranges(libxl__gc *gc, void *fdt, + unsigned addr_cells, + unsigned size_cells, + unsigned num_regs, ...) +{ + uint32_t regs[num_regs*((addr_cells*2)+size_cells+1)]; + be32 *cells = ®s[0]; + int i; + va_list ap; + uint64_t arg; + + va_start(ap, num_regs); + for (i = 0 ; i < num_regs; i++) { + /* Set the memory bit field */ + arg = va_arg(ap, uint32_t); + set_cell(&cells, 1, arg); + + /* Set the vpci bus address */ + arg = addr_cells ? va_arg(ap, uint64_t) : 0; + set_cell(&cells, addr_cells , arg); + + /* Set the cpu bus address where vpci address is mapped */ + set_cell(&cells, addr_cells, arg); + + /* Set the vpci size requested */ + arg = size_cells ? va_arg(ap, uint64_t) : 0; + set_cell(&cells, size_cells, arg); + } + va_end(ap); + + return fdt_property(fdt, "ranges", regs, sizeof(regs)); +} + static int make_root_properties(libxl__gc *gc, const libxl_version_info *vers, void *fdt) @@ -668,6 +720,53 @@ static int make_vpl011_uart_node(libxl__gc *gc, void *fdt, return 0; } +static int make_vpci_node(libxl__gc *gc, void *fdt, + const struct arch_info *ainfo, + struct xc_dom_image *dom) +{ + int res; + const uint64_t vpci_ecam_base = GUEST_VPCI_ECAM_BASE; + const uint64_t vpci_ecam_size = GUEST_VPCI_ECAM_SIZE; + const char *name = GCSPRINTF("pcie@%"PRIx64, vpci_ecam_base); + + res = fdt_begin_node(fdt, name); + if (res) return res; + + res = fdt_property_compat(gc, fdt, 1, "pci-host-ecam-generic"); + if (res) return res; + + res = fdt_property_string(fdt, "device_type", "pci"); + if (res) return res; + + res = fdt_property_regs(gc, fdt, GUEST_ROOT_ADDRESS_CELLS, + GUEST_ROOT_SIZE_CELLS, 1, vpci_ecam_base, vpci_ecam_size); + if (res) return res; + + res = fdt_property_values(gc, fdt, "bus-range", 2, 0, 255); + if (res) return res; + + res = fdt_property_cell(fdt, "#address-cells", 3); + if (res) return res; + + res = fdt_property_cell(fdt, "#size-cells", 2); + if (res) return res; + + res = fdt_property_string(fdt, "status", "okay"); + if (res) return res; + + res = fdt_property_vpci_ranges(gc, fdt, GUEST_ROOT_ADDRESS_CELLS, + GUEST_ROOT_SIZE_CELLS, 2, + GUEST_VPCI_ADDR_TYPE_MEM, GUEST_VPCI_MEM_ADDR, GUEST_VPCI_MEM_SIZE, + GUEST_VPCI_ADDR_TYPE_PREFETCH_MEM, GUEST_VPCI_PREFETCH_MEM_ADDR, + GUEST_VPCI_PREFETCH_MEM_SIZE); + if (res) return res; + + res = fdt_end_node(fdt); + if (res) return res; + + return 0; +} + static const struct arch_info *get_arch_info(libxl__gc *gc, const struct xc_dom_image *dom) { @@ -971,6 +1070,9 @@ next_resize: if (info->tee == LIBXL_TEE_TYPE_OPTEE) FDT( make_optee_node(gc, fdt) ); + if (libxl_defbool_val(info->arch_arm.vpci)) + FDT( make_vpci_node(gc, fdt, ainfo, dom) ); + if (pfdt) FDT( copy_partial_fdt(gc, fdt, pfdt) ); @@ -1189,6 +1291,9 @@ void libxl__arch_domain_build_info_setdefault(libxl__gc *gc, /* ACPI is disabled by default */ libxl_defbool_setdefault(&b_info->acpi, false); + /* VPCI is disabled by default */ + libxl_defbool_setdefault(&b_info->arch_arm.vpci, false); + if (b_info->type != LIBXL_DOMAIN_TYPE_PV) return; diff --git a/tools/libs/light/libxl_create.c b/tools/libs/light/libxl_create.c index e356b2106d..529e475489 100644 --- a/tools/libs/light/libxl_create.c +++ b/tools/libs/light/libxl_create.c @@ -632,6 +632,9 @@ int libxl__domain_make(libxl__gc *gc, libxl_domain_config *d_config, if (info->passthrough == LIBXL_PASSTHROUGH_SYNC_PT) create.iommu_opts |= XEN_DOMCTL_IOMMU_no_sharept; + if ( libxl_defbool_val(b_info->arch_arm.vpci) ) + create.flags |= XEN_DOMCTL_CDF_vpci; + /* Ultimately, handle is an array of 16 uint8_t, same as uuid */ libxl_uuid_copy(ctx, (libxl_uuid *)&create.handle, &info->uuid); diff --git a/tools/libs/light/libxl_types.idl b/tools/libs/light/libxl_types.idl index 3f9fff653a..78b1ddf0b8 100644 --- a/tools/libs/light/libxl_types.idl +++ b/tools/libs/light/libxl_types.idl @@ -644,6 +644,7 @@ libxl_domain_build_info = Struct("domain_build_info",[ ("arch_arm", Struct(None, [("gic_version", libxl_gic_version), ("vuart", libxl_vuart_type), + ("vpci", libxl_defbool), ])), ("arch_x86", Struct(None, [("msr_relaxed", libxl_defbool), ])), diff --git a/tools/xl/xl_parse.c b/tools/xl/xl_parse.c index 17dddb4cd5..ffafbeffb4 100644 --- a/tools/xl/xl_parse.c +++ b/tools/xl/xl_parse.c @@ -1497,6 +1497,8 @@ void parse_config_data(const char *config_source, } if (d_config->num_pcidevs && c_info->type == LIBXL_DOMAIN_TYPE_PV) libxl_defbool_set(&b_info->u.pv.e820_host, true); + if (d_config->num_pcidevs) + libxl_defbool_set(&b_info->arch_arm.vpci, true); } if (!xlu_cfg_get_list (config, "dtdev", &dtdevs, 0, 0)) { diff --git a/xen/include/public/arch-arm.h b/xen/include/public/arch-arm.h index 727541a321..85692eca6c 100644 --- a/xen/include/public/arch-arm.h +++ b/xen/include/public/arch-arm.h @@ -431,6 +431,11 @@ typedef uint64_t xen_callback_t; #define GUEST_PL011_BASE xen_mk_ullong(0x22000000) #define GUEST_PL011_SIZE xen_mk_ullong(0x00001000) +/* Guest PCI-PCIe memory space where config space and BAR will be available.*/ +#define GUEST_VPCI_ADDR_TYPE_MEM xen_mk_ullong(0x02000000) +#define GUEST_VPCI_MEM_ADDR xen_mk_ullong(0x22001000) +#define GUEST_VPCI_MEM_SIZE xen_mk_ullong(0x10000000) + /* * 16MB == 4096 pages reserved for guest to use as a region to map its * grant table in. @@ -446,6 +451,11 @@ typedef uint64_t xen_callback_t; #define GUEST_RAM0_BASE xen_mk_ullong(0x40000000) /* 3GB of low RAM @ 1GB */ #define GUEST_RAM0_SIZE xen_mk_ullong(0xc0000000) +/* 4GB @ 4GB Prefetch Memory for VPCI */ +#define GUEST_VPCI_ADDR_TYPE_PREFETCH_MEM xen_mk_ullong(0x42000000) +#define GUEST_VPCI_PREFETCH_MEM_ADDR xen_mk_ullong(0x100000000) +#define GUEST_VPCI_PREFETCH_MEM_SIZE xen_mk_ullong(0x100000000) + #define GUEST_RAM1_BASE xen_mk_ullong(0x0200000000) /* 1016GB of RAM @ 8GB */ #define GUEST_RAM1_SIZE xen_mk_ullong(0xfe00000000) From patchwork Wed Sep 22 11:35:03 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rahul Singh X-Patchwork-Id: 12510359 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F090DC433EF for ; Wed, 22 Sep 2021 11:41:17 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BA24360F26 for ; Wed, 22 Sep 2021 11:41:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org BA24360F26 Authentication-Results: mail.kernel.org; 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Wed, 22 Sep 2021 11:41:07 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 476036D; Wed, 22 Sep 2021 04:41:07 -0700 (PDT) Received: from e109506.cambridge.arm.com (e109506.cambridge.arm.com [10.1.199.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 46E213F719; Wed, 22 Sep 2021 04:41:06 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 1c2d6418-f2a8-4893-9eda-a6f45f565183 From: Rahul Singh To: xen-devel@lists.xenproject.org Cc: bertrand.marquis@arm.com, rahul.singh@arm.com, andre.przywara@arm.com, Stefano Stabellini , Julien Grall , Volodymyr Babchuk Subject: [PATCH v2 17/17] xen/arm: Add linux,pci-domain property for hwdom if not available. Date: Wed, 22 Sep 2021 12:35:03 +0100 Message-Id: X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: If the property is not present in the device tree node for host bridge, XEN while creating the dtb for hwdom will create this property and assigns the already allocated segment to the host bridge so that XEN and linux will have the same segment for the host bridges. Signed-off-by: Rahul Singh --- Change in v2: - Add linux,pci-domain only when pci-passthrough command line option is enabeld --- xen/arch/arm/domain_build.c | 16 ++++++++++++++++ xen/arch/arm/pci/pci-host-common.c | 21 +++++++++++++++++++++ xen/include/asm-arm/pci.h | 9 +++++++++ 3 files changed, 46 insertions(+) diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c index 5eb83b12a1..83ab0d52cc 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arch/arm/domain_build.c @@ -743,6 +743,22 @@ static int __init write_properties(struct domain *d, struct kernel_info *kinfo, return res; } + if ( pci_passthrough_enabled && dt_device_type_is_equal(node, "pci") ) + { + if ( !dt_find_property(node, "linux,pci-domain", NULL) ) + { + uint16_t segment; + + res = pci_get_host_bridge_segment(node, &segment); + if ( res < 0 ) + return res; + + res = fdt_property_cell(kinfo->fdt, "linux,pci-domain", segment); + if ( res ) + return res; + } + } + /* * Override the property "status" to disable the device when it's * marked for passthrough. diff --git a/xen/arch/arm/pci/pci-host-common.c b/xen/arch/arm/pci/pci-host-common.c index 3bdc336268..a88f20175e 100644 --- a/xen/arch/arm/pci/pci-host-common.c +++ b/xen/arch/arm/pci/pci-host-common.c @@ -262,6 +262,27 @@ struct pci_host_bridge *pci_find_host_bridge(uint16_t segment, uint8_t bus) return NULL; } + +/* + * This function will lookup an hostbridge based on config space address. + */ +int pci_get_host_bridge_segment(const struct dt_device_node *node, + uint16_t *segment) +{ + struct pci_host_bridge *bridge; + + list_for_each_entry( bridge, &pci_host_bridges, node ) + { + if ( bridge->dt_node != node ) + continue; + + *segment = bridge->segment; + return 0; + } + + return -EINVAL; +} + /* * Local variables: * mode: C diff --git a/xen/include/asm-arm/pci.h b/xen/include/asm-arm/pci.h index 9327b7488e..9edc6bc5ae 100644 --- a/xen/include/asm-arm/pci.h +++ b/xen/include/asm-arm/pci.h @@ -94,6 +94,8 @@ int pci_generic_config_write(struct pci_host_bridge *bridge, uint32_t sbdf, void __iomem *pci_ecam_map_bus(struct pci_host_bridge *bridge, uint32_t sbdf, uint32_t where); struct pci_host_bridge *pci_find_host_bridge(uint16_t segment, uint8_t bus); +int pci_get_host_bridge_segment(const struct dt_device_node *node, + uint16_t *segment); static always_inline bool is_pci_passthrough_enabled(void) { @@ -110,5 +112,12 @@ static always_inline bool is_pci_passthrough_enabled(void) return false; } +static inline int pci_get_host_bridge_segment(const struct dt_device_node *node, + uint16_t *segment) +{ + ASSERT_UNREACHABLE(); + return -EINVAL; +} + #endif /*!CONFIG_HAS_PCI*/ #endif /* __ARM_PCI_H__ */