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GET /api/patches/1035063/?format=api
{ "id": 1035063, "url": "http://patchwork.ozlabs.org/api/patches/1035063/?format=api", "web_url": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/1549048453-3584-2-git-send-email-megha.dey@linux.intel.com/", "project": { "id": 46, "url": "http://patchwork.ozlabs.org/api/projects/46/?format=api", "name": "Intel Wired Ethernet development", "link_name": "intel-wired-lan", "list_id": "intel-wired-lan.osuosl.org", "list_email": "intel-wired-lan@osuosl.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<1549048453-3584-2-git-send-email-megha.dey@linux.intel.com>", "list_archive_url": null, "date": "2019-02-01T19:14:08", "name": "[RFC,v4,1/6] PCI/MSI: New structures/macros for dynamic MSI-X allocation", "commit_ref": null, "pull_url": null, "state": "rfc", "archived": false, "hash": "19790a81c3fa4d1326e269d9038954339089fb6e", "submitter": { "id": 75876, "url": "http://patchwork.ozlabs.org/api/people/75876/?format=api", "name": "Dey, Megha", "email": "megha.dey@linux.intel.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/1549048453-3584-2-git-send-email-megha.dey@linux.intel.com/mbox/", "series": [ { "id": 89594, "url": "http://patchwork.ozlabs.org/api/series/89594/?format=api", "web_url": "http://patchwork.ozlabs.org/project/intel-wired-lan/list/?series=89594", "date": "2019-02-01T19:14:07", "name": "Introduce dynamic allocation/freeing of MSI-X vectors", "version": 4, "mbox": "http://patchwork.ozlabs.org/series/89594/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/1035063/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/1035063/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<intel-wired-lan-bounces@osuosl.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "intel-wired-lan@lists.osuosl.org" ], "Delivered-To": [ "patchwork-incoming@bilbo.ozlabs.org", "intel-wired-lan@lists.osuosl.org" ], "Authentication-Results": [ "ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=osuosl.org\n\t(client-ip=140.211.166.137; helo=fraxinus.osuosl.org;\n\tenvelope-from=intel-wired-lan-bounces@osuosl.org;\n\treceiver=<UNKNOWN>)", "ozlabs.org; dmarc=none (p=none dis=none)\n\theader.from=linux.intel.com" ], "Received": [ "from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256\n\tbits)) (No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 43rmzn11BLz9sDX\n\tfor <incoming@patchwork.ozlabs.org>;\n\tSat, 2 Feb 2019 06:16:20 +1100 (AEDT)", "from localhost (localhost [127.0.0.1])\n\tby fraxinus.osuosl.org (Postfix) with ESMTP id 4A27686C3E;\n\tFri, 1 Feb 2019 19:16:19 +0000 (UTC)", "from fraxinus.osuosl.org ([127.0.0.1])\n\tby localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024)\n\twith ESMTP id X84D0MKYpkRt; Fri, 1 Feb 2019 19:16:17 +0000 (UTC)", "from ash.osuosl.org (ash.osuosl.org [140.211.166.34])\n\tby fraxinus.osuosl.org (Postfix) with ESMTP id 597D986C18;\n\tFri, 1 Feb 2019 19:16:17 +0000 (UTC)", "from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133])\n\tby ash.osuosl.org (Postfix) with ESMTP id 3209A1BF954\n\tfor <intel-wired-lan@lists.osuosl.org>;\n\tFri, 1 Feb 2019 18:52:35 +0000 (UTC)", "from localhost (localhost [127.0.0.1])\n\tby hemlock.osuosl.org (Postfix) with ESMTP id 0D6A3851FF\n\tfor <intel-wired-lan@lists.osuosl.org>;\n\tFri, 1 Feb 2019 18:52:35 +0000 (UTC)", "from hemlock.osuosl.org ([127.0.0.1])\n\tby localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024)\n\twith ESMTP id Y9dy2kgF0cul for <intel-wired-lan@lists.osuosl.org>;\n\tFri, 1 Feb 2019 18:52:24 +0000 (UTC)", "from mga03.intel.com (mga03.intel.com [134.134.136.65])\n\tby hemlock.osuosl.org (Postfix) with ESMTPS id 14FBC81BDC\n\tfor <intel-wired-lan@lists.osuosl.org>;\n\tFri, 1 Feb 2019 18:52:23 +0000 (UTC)", "from orsmga003.jf.intel.com ([10.7.209.27])\n\tby orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384;\n\t01 Feb 2019 10:50:52 -0800", "from megha-z97x-ud7-th.sc.intel.com ([143.183.85.162])\n\tby orsmga003.jf.intel.com with ESMTP; 01 Feb 2019 10:50:52 -0800" ], "X-Virus-Scanned": [ "amavisd-new at osuosl.org", "amavisd-new at osuosl.org" ], "X-Greylist": "domain auto-whitelisted by SQLgrey-1.7.6", "X-Amp-Result": "SKIPPED(no attachment in message)", "X-Amp-File-Uploaded": "False", "X-ExtLoop1": "1", "X-IronPort-AV": "E=Sophos;i=\"5.56,549,1539673200\"; d=\"scan'208\";a=\"123233683\"", "From": "Megha Dey <megha.dey@linux.intel.com>", "To": "linux-drivers-review@linux.intel.com,\n\tintel-wired-lan@lists.osuosl.org", "Date": "Fri, 1 Feb 2019 11:14:08 -0800", "Message-Id": "<1549048453-3584-2-git-send-email-megha.dey@linux.intel.com>", "X-Mailer": "git-send-email 2.7.4", "In-Reply-To": "<1549048453-3584-1-git-send-email-megha.dey@linux.intel.com>", "References": "<1549048453-3584-1-git-send-email-megha.dey@linux.intel.com>", "X-Mailman-Approved-At": "Fri, 01 Feb 2019 19:16:15 +0000", "Subject": "[Intel-wired-lan] [RFC v4 1/6] PCI/MSI: New structures/macros for\n\tdynamic MSI-X allocation", "X-BeenThere": "intel-wired-lan@osuosl.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "Intel Wired Ethernet Linux Kernel Driver Development\n\t<intel-wired-lan.osuosl.org>", "List-Unsubscribe": "<https://lists.osuosl.org/mailman/options/intel-wired-lan>, \n\t<mailto:intel-wired-lan-request@osuosl.org?subject=unsubscribe>", "List-Archive": "<http://lists.osuosl.org/pipermail/intel-wired-lan/>", "List-Post": "<mailto:intel-wired-lan@osuosl.org>", "List-Help": "<mailto:intel-wired-lan-request@osuosl.org?subject=help>", "List-Subscribe": "<https://lists.osuosl.org/mailman/listinfo/intel-wired-lan>, \n\t<mailto:intel-wired-lan-request@osuosl.org?subject=subscribe>", "Cc": "ravi.v.shankar@intel.com, ashok.raj@intel.com, kyung.min.park@intel.com, \n\tjacob.jun.pan@intel.com, Megha Dey <megha.dey@linux.intel.com>,\n\tmegha.dey@intel.com", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Errors-To": "intel-wired-lan-bounces@osuosl.org", "Sender": "\"Intel-wired-lan\" <intel-wired-lan-bounces@osuosl.org>" }, "content": "This is a preparatory patch to introduce the dynamic allocation of\nMSI-X vectors. In this patch, we add new structure members, introduce\nrelevant structures and macros which will be consumed by the API which\nwill dynamically allocate the MSI-X vectors.\n\nSigned-off-by: Megha Dey <megha.dey@linux.intel.com>\n---\n include/linux/device.h | 14 ++++++++++++++\n include/linux/msi.h | 7 +++++++\n include/linux/pci.h | 2 ++\n 3 files changed, 23 insertions(+)", "diff": "diff --git a/include/linux/device.h b/include/linux/device.h\nindex 6cb4640..3e9b138 100644\n--- a/include/linux/device.h\n+++ b/include/linux/device.h\n@@ -887,6 +887,16 @@ struct dev_links_info {\n };\n \n /**\n+ * struct dev_idr - Device group and entry ID allocator.\n+ * @grp_idr: group ID allocator\n+ * @entry_idr: entry ID allocator\n+ */\n+struct dev_idr {\n+\tstruct idr *grp_idr;\n+\tstruct idr *entry_idr;\n+};\n+\n+/**\n * struct device - The basic device structure\n * @parent:\tThe device's \"parent\" device, the device to which it is attached.\n * \t\tIn most cases, a parent device is some sort of bus or host\n@@ -1051,6 +1061,10 @@ struct device {\n defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU_ALL)\n \tbool\t\t\tdma_coherent:1;\n #endif\n+\t/* For dynamic MSI-X allocation */\n+\tstruct msi_desc\t\t*first_desc;\t/* 1st MSI-X desc of the latest allocated group */\n+\tstruct dev_idr\t\t*msix_dev_idr;\t/* entry/group allocator */\n+\tbool\t\t\tone_shot;\t/* dynamic or oneshot MSI-X allocation */\n };\n \n static inline struct device *kobj_to_dev(struct kobject *kobj)\ndiff --git a/include/linux/msi.h b/include/linux/msi.h\nindex 784fb52..2092abf 100644\n--- a/include/linux/msi.h\n+++ b/include/linux/msi.h\n@@ -118,11 +118,18 @@ struct msi_desc {\n \tlist_for_each_entry((desc), dev_to_msi_list((dev)), list)\n #define for_each_msi_entry_safe(desc, tmp, dev)\t\\\n \tlist_for_each_entry_safe((desc), (tmp), dev_to_msi_list((dev)), list)\n+/* Iterate through MSI entries from a given entry */\n+#define for_each_msi_entry_from(desc, dev) \\\n+\tdesc = (*dev).first_desc; \\\n+\tlist_for_each_entry_from((desc), dev_to_msi_list((dev)), list) \\\n \n #ifdef CONFIG_PCI_MSI\n #define first_pci_msi_entry(pdev)\tfirst_msi_entry(&(pdev)->dev)\n #define for_each_pci_msi_entry(desc, pdev)\t\\\n \tfor_each_msi_entry((desc), &(pdev)->dev)\n+/* Iterate through PCI-MSI entries from a given entry */\n+#define for_each_pci_msi_entry_from(desc, pdev) \\\n+\tfor_each_msi_entry_from((desc), &(pdev)->dev)\n \n struct pci_dev *msi_desc_to_pci_dev(struct msi_desc *desc);\n void *msi_desc_to_pci_sysdata(struct msi_desc *desc);\ndiff --git a/include/linux/pci.h b/include/linux/pci.h\nindex 65f1d8c..177305f 100644\n--- a/include/linux/pci.h\n+++ b/include/linux/pci.h\n@@ -459,6 +459,8 @@ struct pci_dev {\n \tchar\t\t*driver_override; /* Driver name to force a match */\n \n \tunsigned long\tpriv_flags;\t/* Private flags for the PCI driver */\n+\tunsigned int\tnum_msix;\t/* Number of MSI-X vectors supported */\n+\tvoid __iomem\t*base;\t\t/* Base address of MSI-X table */\n };\n \n static inline struct pci_dev *pci_physfn(struct pci_dev *dev)\n", "prefixes": [ "RFC", "v4", "1/6" ] }