From patchwork Wed Mar 15 14:26:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chuck Zmudzinski X-Patchwork-Id: 13175932 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 92474C7618B for ; Wed, 15 Mar 2023 14:26:54 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.510083.787138 (Exim 4.92) (envelope-from ) id 1pcS5X-00054s-RA; Wed, 15 Mar 2023 14:26:47 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 510083.787138; Wed, 15 Mar 2023 14:26:47 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pcS5X-00054f-N9; Wed, 15 Mar 2023 14:26:47 +0000 Received: by outflank-mailman (input) for mailman id 510083; Wed, 15 Mar 2023 14:26:45 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pcS5V-0004WZ-Pf for xen-devel@lists.xenproject.org; Wed, 15 Mar 2023 14:26:45 +0000 Received: from sonic304-24.consmr.mail.gq1.yahoo.com (sonic304-24.consmr.mail.gq1.yahoo.com [98.137.68.205]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id 66e99460-c33d-11ed-b464-930f4c7d94ae; Wed, 15 Mar 2023 15:26:43 +0100 (CET) Received: from sonic.gate.mail.ne1.yahoo.com by sonic304.consmr.mail.gq1.yahoo.com with HTTP; Wed, 15 Mar 2023 14:26:39 +0000 Received: by hermes--production-bf1-777648578f-gg2qh (Yahoo Inc. Hermes SMTP Server) with ESMTPA ID 60044a03c62ff9d9db8c181d26f4f55f; Wed, 15 Mar 2023 14:26:38 +0000 (UTC) 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: 66e99460-c33d-11ed-b464-930f4c7d94ae DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=aol.com; s=a2048; t=1678890399; bh=fIhIn9uQIrD1yl4JUmBOZpSdzRAzN+PjSPUPPg3S4P4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From:Subject:Reply-To; b=IFaS+TUJBO4a9swCw7t296GVQal0IRousVosgyYjyEnYvYC9n6E8Vx9doqQfty+mZgsapuQKf1ejCVeQYfBmlzstrO0iznJynX7HhNwItEJwLBGcrQ5ac4hpl53dv6YCewhrGegclWkccZmsIPSfa7hSP+FM7kbNejpmrzxBKUYNL6aGUoT/hmDVMR4i+rte+BswHWs+Uy5GpTKn77AUkuqZzehAhoHLy6RH3bIMZ/Z+Zqxgzjunz9uAtEfpVopttdm8ki4VoD8Js8S2PX2L9UsYRHlM9qsCgnh9/gL4x9RMLX6FvBYwTOJsEZdsEQ1w7XX6shF2Emx+dMGScQUjpg== X-SONIC-DKIM-SIGN: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1678890399; bh=n6stniTtUYkGL8VGERtQx6sX0mKs1g7kvoBUxxiIKGc=; h=X-Sonic-MF:From:To:Subject:Date:From:Subject; b=hnoQ+7baGI24XWnf1FHrnxYeRspBa9Z40+BVa95q3Fum7PowAAFfScrY1EKGoaC0euh7IqqwkaO/E91V5+33VHWHK/kVNCWP9nWwooK4j7eZ8qBZ/d0T3C6ieqLmNnfFwlYG3CVLN8Sbq5oSXzv1X6yxb7w/chPL3WSQDoBHlY8A5PJzrixKDYvZe9JxGoarWVx8Mhr/e0i4Uql/Vm8RkY6snS9kLH749aF1Yq3HPnrM1IkZ+nxEA4xhgADAyBSW4HjNmAbIL55lKzJBwoSNCKaLMrp+xcqizB62Eg64SzV+0fyNwuNYs9bc6RnaECd8PYIF0V7nxEDzwmAULKol/g== X-YMail-OSG: VFrfZgsVM1mlYTeVv2MNOgIQsJ5hQ2HZyDFFVL6rZfqaObiEszmiCdaaP.5b9Y3 0eEg1ve.CH4YUS3BSFc_JoTXGZfkTogL.0h.OE_cydmeXY9PXyBKUxuW4AwDbk5HxZwrPpMjazIb m5cB_NSfKdrOXpEt_kppD3ErndiSlTjXpwNSrw_TIyI0Nc9FXneaQk8nBNEpZClbtl3IrGGbZE0Y __6xEO7Os5CR6wdZjB.HuUuVmhUKkM02GSqb6PGMLZU3twysiORiNQdet4n_Fizh0Ef229sG6fIT _MpDX1d5jhQ3B2dNFL4KnPWtRklbQlcgdSMQiVU5BCRo6yGlfbwsVHyf8YtVWmMmozy1NzDf3nuS 4eExA9NZNDFNk3sZdRxscTR0fLpWdP80F2wkcUWePsGWWZL2r_tO34ZAYTq.gI14DX8UHmsqbL01 tTQK54M4sjRU4oWNI1SzCUcr2KHcLdE4JWRLA.1eQrVBFRINopaZp4zO37XNdksWV3TdRS1sX6GI jKoRrFp5Z9LvP84yxiN2cU0Zk.3D8Vc3.SnRDfCeS9IaoVznuqQALQTkuU1CWwH78WGNAFMDXzuT 3RMUGLMC96y3epjwTP2Bi.ZPGIsRyS8GU9Ny67Z5Gm.fAr5a5m8gPNhdPEcC0x_IjlKat1l3hPey JInLGsyo0NPG_uSDJm0WP3itaBTEf1HeDE5VDptm8r9NJZKimr0g3vikp3E7o2O8gwh7bFEApHxE D48nZz_AKkprp7siaRSTCkdO_ApsRzdSEPR9ARNEQ_OZIQU8Bo90fTPhHirEHS8QWjSoYDsMad9Z 7mU9GX1HriV2AmURGXcKTYtWQ6a_y2ol2lYOwCMM4WIRA6D1M.kzEAg.vKbMKG387SuBpdbSlGlU RXFwAslJlV0ZrSo8WFRnQeX8wsTW5owEtkwYi22tj_FS75ssmFiGDeksOwPUkNqi4_hdOyuhXVbh K0dqIHH6Gal2q8NhVj.PaXGhKqtjnnJjwNINVwoeq7AfRzYdMLvOxGCISzhCgp2x5dUPN18sqmkY b4sI2TJjGxbmUZ9pI_rbPEe_JAeb8x9ScPxpVcmykXehiiqX.FU92aQrL7oXHqiCjLr4Er26sruU 5mIpueeSUqQk7ePnSpJj.qUpsQVH2s0VTs2uWDRk6JyYSCnvOcRB2EXnxnfifca0pL6o0EY9slBW AmQgK9zvThReEPgFzgLPtvvweIg5Hw_RRm4C_pyqEc_vf64o2WqPCgpjczQY_MgUhy5USzoggREX OPdwbxKP1q5IbVDPtEMBghk8Os9FjY_DmK2FSKVRQExfTTfqE_1mZrSSC_cMfWHDtxbRgWnkmSNc oW6x5hZeLd7lehMqqht8XHDqAy269QpD_SH1wg_yiRTr2THmHmvTOrRsX9W1WQ_xTyjdtvfdcsVC uDVxi3ozfuW6EiKrDfkcSjCFzE8r0SH8PoaFTOJQ0NvZKsmDcNjuvjqmfykLO_DNDInBQj458PNk AEkjxQAk0BogF_HIpCFxTI.jyDyzbu3hDcb0mowHGGO2NRGyggfZNgNL72QDGq09K5PSHAOd8OzE AqS3i10EOcu.UFtX124oSD4nz7Wk2tinQgjNiBqhxj77RkJBL0NheqC9rWlxh_wr.3WXPtw7MLM7 l7GhTW0np9v9qkaqfMjZryz9sxLqlCKnhEnGd_KsoICF1oQ7QqVjrfKzypTAMNcv.ALY.ZmlNZhU uttoDNmFQmwCTm.hYFSek6AihQMVCSjngQsBdQEj4gRucir4B8s1GtZmCKLViN25eYWD3aj3Kojy J2ULzPc2C5LCF6NLhbUKoRpw42YjSybygWBVMGExISIiop762YTPvXxU1iQgkjMDvzayKa6B23sw VR1XFbWGP77Pb.sBM6o8dhKiK2qNiv8AyP8lCbGii1xwNQlvf01MhWQH3RuKGuV.WOnLhX45_u_c UOA47tpfJfh3QjnX1Si0r8SXeaJsenbbUk7k_HZV3fUta1oUnu6Qr_7sNP7mu2rdvmVRAkGH8UWe 2Z8jCIVUuu43Y0oEzVNnrT_GJRku7m.jQmzlazKymGSt0Z8sEBjA.xoprninPRO27KT1LF_LftPT QBUk9r83pD9z.m_1THxWlaAAIZuNRnJGWxhN32aDF6XsXb0fzyCVeThW00LDKY3AOhl0H.5hO.BR U7EjATWGKGbDvvnmc3jbgCIvchOWhnnZwnwFFaMaqUss23Mk2h_6QPPTLSsp2UcMVvxjlRur7ocC 7uEw- X-Sonic-MF: X-Sonic-ID: 40f55634-955b-48f1-969e-f546ec2c1cbc From: Chuck Zmudzinski To: qemu-devel@nongnu.org Cc: "Michael S. Tsirkin" , Marcel Apfelbaum , Mark Cave-Ayland , Artyom Tarasenko , Stefano Stabellini , Anthony Perard , Paul Durrant , xen-devel@lists.xenproject.org Subject: [PATCH v4 1/2] pci: avoid accessing slot_reserved_mask directly outside of pci.c Date: Wed, 15 Mar 2023 10:26:19 -0400 Message-Id: X-Mailer: git-send-email 2.39.2 In-Reply-To: References: MIME-Version: 1.0 This patch provides accessor functions as replacements for direct access to slot_reserved_mask according to the comment at the top of include/hw/pci/pci_bus.h which advises that data structures for PCIBus should not be directly accessed but instead be accessed using accessor functions in pci.h. Three accessor functions can conveniently replace all direct accesses of slot_reserved_mask. With this patch, the new accessor functions are used in hw/sparc64/sun4u.c and hw/xen/xen_pt.c and pci_bus.h is removed from the included header files of the same two files. No functional change intended. Signed-off-by: Chuck Zmudzinski --- Changelog v4: This patch is unchanged since v2. v3: This patch is unchanged since v2. v2: This is the first version of this patch, it did not exist in v1. hw/pci/pci.c | 15 +++++++++++++++ hw/sparc64/sun4u.c | 7 +++---- hw/xen/xen_pt.c | 7 +++---- include/hw/pci/pci.h | 3 +++ 4 files changed, 24 insertions(+), 8 deletions(-) diff --git a/hw/pci/pci.c b/hw/pci/pci.c index def5000e7b..8a87ccc8b0 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -1116,6 +1116,21 @@ static bool pci_bus_devfn_reserved(PCIBus *bus, int devfn) return bus->slot_reserved_mask & (1UL << PCI_SLOT(devfn)); } +uint32_t pci_bus_get_slot_reserved_mask(PCIBus *bus) +{ + return bus->slot_reserved_mask; +} + +void pci_bus_set_slot_reserved_mask(PCIBus *bus, uint32_t mask) +{ + bus->slot_reserved_mask |= mask; +} + +void pci_bus_clear_slot_reserved_mask(PCIBus *bus, uint32_t mask) +{ + bus->slot_reserved_mask &= ~mask; +} + /* -1 for devfn means auto assign */ static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, const char *name, int devfn, diff --git a/hw/sparc64/sun4u.c b/hw/sparc64/sun4u.c index a25e951f9d..eae7589462 100644 --- a/hw/sparc64/sun4u.c +++ b/hw/sparc64/sun4u.c @@ -31,7 +31,6 @@ #include "hw/irq.h" #include "hw/pci/pci.h" #include "hw/pci/pci_bridge.h" -#include "hw/pci/pci_bus.h" #include "hw/pci/pci_host.h" #include "hw/qdev-properties.h" #include "hw/pci-host/sabre.h" @@ -608,9 +607,9 @@ static void sun4uv_init(MemoryRegion *address_space_mem, /* Only in-built Simba APBs can exist on the root bus, slot 0 on busA is reserved (leaving no slots free after on-board devices) however slots 0-3 are free on busB */ - pci_bus->slot_reserved_mask = 0xfffffffc; - pci_busA->slot_reserved_mask = 0xfffffff1; - pci_busB->slot_reserved_mask = 0xfffffff0; + pci_bus_set_slot_reserved_mask(pci_bus, 0xfffffffc); + pci_bus_set_slot_reserved_mask(pci_busA, 0xfffffff1); + pci_bus_set_slot_reserved_mask(pci_busB, 0xfffffff0); ebus = pci_new_multifunction(PCI_DEVFN(1, 0), true, TYPE_EBUS); qdev_prop_set_uint64(DEVICE(ebus), "console-serial-base", diff --git a/hw/xen/xen_pt.c b/hw/xen/xen_pt.c index 2d33d178ad..a540149639 100644 --- a/hw/xen/xen_pt.c +++ b/hw/xen/xen_pt.c @@ -57,7 +57,6 @@ #include #include "hw/pci/pci.h" -#include "hw/pci/pci_bus.h" #include "hw/qdev-properties.h" #include "hw/qdev-properties-system.h" #include "xen_pt.h" @@ -951,7 +950,7 @@ void xen_igd_reserve_slot(PCIBus *pci_bus) } XEN_PT_LOG(0, "Reserving PCI slot 2 for IGD\n"); - pci_bus->slot_reserved_mask |= XEN_PCI_IGD_SLOT_MASK; + pci_bus_set_slot_reserved_mask(pci_bus, XEN_PCI_IGD_SLOT_MASK); } static void xen_igd_clear_slot(DeviceState *qdev, Error **errp) @@ -971,7 +970,7 @@ static void xen_igd_clear_slot(DeviceState *qdev, Error **errp) return; } - if (!(pci_bus->slot_reserved_mask & XEN_PCI_IGD_SLOT_MASK)) { + if (!(pci_bus_get_slot_reserved_mask(pci_bus) & XEN_PCI_IGD_SLOT_MASK)) { xpdc->pci_qdev_realize(qdev, errp); return; } @@ -982,7 +981,7 @@ static void xen_igd_clear_slot(DeviceState *qdev, Error **errp) s->real_device.dev == XEN_PCI_IGD_DEV && s->real_device.func == XEN_PCI_IGD_FN && s->real_device.vendor_id == PCI_VENDOR_ID_INTEL) { - pci_bus->slot_reserved_mask &= ~XEN_PCI_IGD_SLOT_MASK; + pci_bus_clear_slot_reserved_mask(pci_bus, XEN_PCI_IGD_SLOT_MASK); XEN_PT_LOG(pci_dev, "Intel IGD found, using slot 2\n"); } xpdc->pci_qdev_realize(qdev, errp); diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h index d5a40cd058..935b4b91b4 100644 --- a/include/hw/pci/pci.h +++ b/include/hw/pci/pci.h @@ -287,6 +287,9 @@ void pci_bus_irqs(PCIBus *bus, pci_set_irq_fn set_irq, void pci_bus_map_irqs(PCIBus *bus, pci_map_irq_fn map_irq); void pci_bus_irqs_cleanup(PCIBus *bus); int pci_bus_get_irq_level(PCIBus *bus, int irq_num); +uint32_t pci_bus_get_slot_reserved_mask(PCIBus *bus); +void pci_bus_set_slot_reserved_mask(PCIBus *bus, uint32_t mask); +void pci_bus_clear_slot_reserved_mask(PCIBus *bus, uint32_t mask); /* 0 <= pin <= 3 0 = INTA, 1 = INTB, 2 = INTC, 3 = INTD */ static inline int pci_swizzle(int slot, int pin) {