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bh=8+cUB7OodCQRiZm0/4C8hQJdS3iJ6+mtcYRXeajhZjE=; b=XnoP0urqOT/QdnxaQ4dTInjZetE6TD4PN8FE/k2t763u/3BMlZDVBdrwYlClhoEK2PrcZW tC9e8+0g2C7ZhXe9nReoJlnQuJcCeeIVqwSoMhVBo40eXs4CeqjYFUyk/lnzlPw7TOy8Da s9maWszi3hdHCZ/IcayJMvZ0Zlj+50I= X-MC-Unique: V-fCl2beOaq5NhdhqxMOmg-1 From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PULL 014/113] pci: Let pci_dma_write() propagate MemTxResult Date: Wed, 2 Dec 2020 03:07:10 -0500 Message-Id: <20201202080849.4125477-15-pbonzini@redhat.com> In-Reply-To: <20201202080849.4125477-1-pbonzini@redhat.com> References: <20201202080849.4125477-1-pbonzini@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=pbonzini@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=63.128.21.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -35 X-Spam_score: -3.6 X-Spam_bar: --- X-Spam_report: (-3.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.497, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) From: Philippe Mathieu-Daud=C3=A9 pci_dma_rw() returns a MemTxResult type. Do not discard it, return it to the caller. Reviewed-by: Li Qiang Reviewed-by: Richard Henderson Signed-off-by: Philippe Mathieu-Daud=C3=A9 Message-Id: <20201023151923.3243652-11-philmd@redhat.com> Signed-off-by: Paolo Bonzini --- include/hw/pci/pci.h | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h index a2de236eeb..259f9c992d 100644 --- a/include/hw/pci/pci.h +++ b/include/hw/pci/pci.h @@ -819,8 +819,20 @@ static inline MemTxResult pci_dma_read(PCIDevice *dev,= dma_addr_t addr, return pci_dma_rw(dev, addr, buf, len, DMA_DIRECTION_TO_DEVICE); } =20 -static inline int pci_dma_write(PCIDevice *dev, dma_addr_t addr, - const void *buf, dma_addr_t len) +/** + * pci_dma_write: Write to address space from PCI device. + * + * Return a MemTxResult indicating whether the operation succeeded + * or failed (eg unassigned memory, device rejected the transaction, + * IOMMU fault). + * + * @dev: #PCIDevice doing the memory access + * @addr: address within the #PCIDevice address space + * @buf: buffer with the data transferred + * @len: the number of bytes to write + */ +static inline MemTxResult pci_dma_write(PCIDevice *dev, dma_addr_t addr, + const void *buf, dma_addr_t len) { return pci_dma_rw(dev, addr, (void *) buf, len, DMA_DIRECTION_FROM_DEV= ICE); } --=20 2.26.2