From patchwork Wed Aug 9 20:51:22 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "lan,Tianyu" X-Patchwork-Id: 9892691 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 0DB1960325 for ; Thu, 10 Aug 2017 03:00:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F067428A00 for ; Thu, 10 Aug 2017 03:00:31 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E54D628A06; Thu, 10 Aug 2017 03:00:31 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.7 required=2.0 tests=BAYES_00, DATE_IN_PAST_06_12, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id E3F7328A1F for ; Thu, 10 Aug 2017 03:00:29 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dfdfp-00052c-1t; Thu, 10 Aug 2017 02:58:13 +0000 Received: from mail6.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dfdfm-00051m-WC for xen-devel@lists.xenproject.org; Thu, 10 Aug 2017 02:58:11 +0000 Received: from [193.109.254.147] by server-2.bemta-6.messagelabs.com id 71/CF-27137-2CBCB895; Thu, 10 Aug 2017 02:58:10 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmpgkeJIrShJLcpLzFFi42I5YG5SrHvwdHe kwdUPehbft0xmcmD0OPzhCksAYxRrZl5SfkUCa0bTiqOsBfeVKu592MzSwLhPpouRi0NIYDqj xLFJPUxdjJwcEgK8EkeWzWCFsP0l7u14yQ5iCwl0MEo8PWgBYrMJqEucWDyRsYuRg0NEwEpi3 r1UkDnMAl8YJX5t2gPWKyzgLtG+8AqYzSKgKjF9VzcbiM0r4CLxYMEiFoj5ChJTHr5nBrE5BV wlzmxdwgixy0Xi1raPbBMYeRcwMqxi1ChOLSpLLdI1MtJLKspMzyjJTczM0TU0MNPLTS0uTkx PzUlMKtZLzs/dxAgMBwYg2MG4Zn7gIUZJDiYlUd6Ohu5IIb6k/JTKjMTijPii0pzU4kOMMhwc ShK8HaeAcoJFqempFWmZOcDAhElLcPAoifBuAUnzFhck5hZnpkOkTjEac2xYvf4LE8erCf+/M Qmx5OXnpUqJ86aBlAqAlGaU5sENgkXMJUZZKWFeRqDThHgKUotyM0tQ5V8xinMwKgnz7gKZwp OZVwK37xXQKUxAp0T4doKcUpKIkJJqYNSp8wksuL9y+Zou3t33Fyv8s4paf7X/y7XeaKFnE9L e737fr//qlLBRQbH4hgdnVxj0zrs80faJ737V2MWSh2f+dvD6Fr02/7Ipd4bPxjdpLHqpXbX1 /BvfqD1kuRry//Y+Nm810baz0mtLW7QyP2vF3rl9PWOdLMvO0+FLLH2TJnfXdki5zldiKc5IN NRiLipOBADqegkqkwIAAA== X-Env-Sender: tianyu.lan@intel.com X-Msg-Ref: server-16.tower-27.messagelabs.com!1502333887!110799585!1 X-Originating-IP: [192.55.52.115] X-SpamReason: No, hits=1.3 required=7.0 tests=BODY_RANDOM_LONG, DATE_IN_PAST_06_12 X-StarScan-Received: X-StarScan-Version: 9.4.45; banners=-,-,- X-VirusChecked: Checked Received: (qmail 9230 invoked from network); 10 Aug 2017 02:58:09 -0000 Received: from mga14.intel.com (HELO mga14.intel.com) (192.55.52.115) by server-16.tower-27.messagelabs.com with DHE-RSA-AES256-GCM-SHA384 encrypted SMTP; 10 Aug 2017 02:58:09 -0000 Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 09 Aug 2017 19:58:07 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.41,349,1498546800"; d="scan'208";a="888416534" Received: from sky-ws.sh.intel.com (HELO localhost) ([10.239.48.141]) by FMSMGA003.fm.intel.com with ESMTP; 09 Aug 2017 19:58:04 -0700 From: Lan Tianyu To: xen-devel@lists.xenproject.org, qemu-devel@nongnu.org Date: Wed, 9 Aug 2017 16:51:22 -0400 Message-Id: <1502311882-11038-4-git-send-email-tianyu.lan@intel.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1502311882-11038-1-git-send-email-tianyu.lan@intel.com> References: <1502311882-11038-1-git-send-email-tianyu.lan@intel.com> Cc: Lan Tianyu , kevin.tian@intel.com, sstabellini@kernel.org, ehabkost@redhat.com, mst@redhat.com, marcel@redhat.com, anthony.perard@citrix.com, pbonzini@redhat.com, Chao Gao , rth@twiddle.net Subject: [Xen-devel] [PATCH V2 3/3] msi: Handle remappable format interrupt request X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Chao Gao According to VT-d spec Interrupt Remapping and Interrupt Posting -> Interrupt Remapping -> Interrupt Request Formats On Intel 64 Platforms, fields of MSI data register have changed. This patch avoids wrongly regarding a remappable format interrupt request as an interrupt binded with an event channel. Signed-off-by: Chao Gao Signed-off-by: Lan Tianyu Acked-by: Anthony PERARD --- hw/i386/xen/xen-hvm.c | 8 +++++++- hw/pci/msi.c | 5 +++-- hw/pci/msix.c | 4 +++- hw/xen/xen_pt_msi.c | 2 +- include/hw/xen/xen.h | 2 +- stubs/xen-hvm.c | 2 +- 6 files changed, 16 insertions(+), 7 deletions(-) diff --git a/hw/i386/xen/xen-hvm.c b/hw/i386/xen/xen-hvm.c index d9ccd5d..cbbce73 100644 --- a/hw/i386/xen/xen-hvm.c +++ b/hw/i386/xen/xen-hvm.c @@ -145,8 +145,14 @@ void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len) } } -int xen_is_pirq_msi(uint32_t msi_data) +int xen_is_pirq_msi(uint32_t msi_addr_lo, uint32_t msi_data) { + /* If the MSI address is configured in remapping format, the MSI will not + * be remapped into a pirq. + */ + if (msi_addr_lo & MSI_ADDR_IF_MASK) { + return 0; + } /* If vector is 0, the msi is remapped into a pirq, passed as * dest_id. */ diff --git a/hw/pci/msi.c b/hw/pci/msi.c index 5e05ce5..d05c876 100644 --- a/hw/pci/msi.c +++ b/hw/pci/msi.c @@ -289,7 +289,7 @@ void msi_reset(PCIDevice *dev) static bool msi_is_masked(const PCIDevice *dev, unsigned int vector) { uint16_t flags = pci_get_word(dev->config + msi_flags_off(dev)); - uint32_t mask, data; + uint32_t mask, data, addr_lo; bool msi64bit = flags & PCI_MSI_FLAGS_64BIT; assert(vector < PCI_MSI_VECTORS_MAX); @@ -298,7 +298,8 @@ static bool msi_is_masked(const PCIDevice *dev, unsigned int vector) } data = pci_get_word(dev->config + msi_data_off(dev, msi64bit)); - if (xen_is_pirq_msi(data)) { + addr_lo = pci_get_long(dev->config + msi_address_lo_off(dev)); + if (xen_is_pirq_msi(addr_lo, data)) { return false; } diff --git a/hw/pci/msix.c b/hw/pci/msix.c index 5078d3d..65cf00c 100644 --- a/hw/pci/msix.c +++ b/hw/pci/msix.c @@ -83,9 +83,11 @@ static bool msix_vector_masked(PCIDevice *dev, unsigned int vector, bool fmask) { unsigned offset = vector * PCI_MSIX_ENTRY_SIZE; uint8_t *data = &dev->msix_table[offset + PCI_MSIX_ENTRY_DATA]; + uint8_t *addr_lo = &dev->msix_table[offset + PCI_MSIX_ENTRY_LOWER_ADDR]; /* MSIs on Xen can be remapped into pirqs. In those cases, masking * and unmasking go through the PV evtchn path. */ - if (xen_enabled() && xen_is_pirq_msi(pci_get_long(data))) { + if (xen_enabled() && xen_is_pirq_msi(pci_get_long(addr_lo), + pci_get_long(data))) { return false; } return fmask || dev->msix_table[offset + PCI_MSIX_ENTRY_VECTOR_CTRL] & diff --git a/hw/xen/xen_pt_msi.c b/hw/xen/xen_pt_msi.c index 5c5d15a..82e13b2 100644 --- a/hw/xen/xen_pt_msi.c +++ b/hw/xen/xen_pt_msi.c @@ -114,7 +114,7 @@ static int msi_msix_setup(XenPCIPassthroughState *s, assert((!is_msix && msix_entry == 0) || is_msix); - if (xen_is_pirq_msi(data)) { + if (xen_is_pirq_msi(addr, data)) { *ppirq = msi_ext_dest_id(addr >> 32) | msi_dest_id(addr); if (!*ppirq) { /* this probably identifies an misconfiguration of the guest, diff --git a/include/hw/xen/xen.h b/include/hw/xen/xen.h index 7efcdaa..0d6c83e 100644 --- a/include/hw/xen/xen.h +++ b/include/hw/xen/xen.h @@ -34,7 +34,7 @@ int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num); void xen_piix3_set_irq(void *opaque, int irq_num, int level); void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len); void xen_hvm_inject_msi(uint64_t addr, uint32_t data); -int xen_is_pirq_msi(uint32_t msi_data); +int xen_is_pirq_msi(uint32_t msi_addr_lo, uint32_t msi_data); qemu_irq *xen_interrupt_controller_init(void); diff --git a/stubs/xen-hvm.c b/stubs/xen-hvm.c index 3ca6c51..aeb1592 100644 --- a/stubs/xen-hvm.c +++ b/stubs/xen-hvm.c @@ -31,7 +31,7 @@ void xen_hvm_inject_msi(uint64_t addr, uint32_t data) { } -int xen_is_pirq_msi(uint32_t msi_data) +int xen_is_pirq_msi(uint32_t msi_addr_lo, uint32_t msi_data) { return 0; }