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[83.50.86.26]) by smtp.gmail.com with ESMTPSA id j13sm42333500wmq.11.2022.01.04.00.54.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Jan 2022 00:54:47 -0800 (PST) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Subject: [PATCH v2 3/9] hw/pci: Document pci_dma_map() Date: Tue, 4 Jan 2022 09:54:25 +0100 Message-Id: <20220104085431.2122999-4-f4bug@amsat.org> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20220104085431.2122999-1-f4bug@amsat.org> References: <20220104085431.2122999-1-f4bug@amsat.org> MIME-Version: 1.0 X-Host-Lookup-Failed: Reverse DNS lookup failed for 2a00:1450:4864:20::331 (failed) Received-SPF: pass client-ip=2a00:1450:4864:20::331; envelope-from=philippe.mathieu.daude@gmail.com; helo=mail-wm1-x331.google.com X-Spam_score_int: 12 X-Spam_score: 1.2 X-Spam_bar: + X-Spam_report: (1.2 / 5.0 requ) DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.249, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.25, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Fam Zheng , Hannes Reinecke , qemu-block@nongnu.org, "Michael S. Tsirkin" , =?utf-8?q?Phi?= =?utf-8?q?lippe_Mathieu-Daud=C3=A9?= , David Hildenbrand , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Peter Xu , Yuval Shaia , Klaus Jensen , Keith Busch , Paolo Bonzini , John Snow Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Philippe Mathieu-Daudé Signed-off-by: Philippe Mathieu-Daudé Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson --- include/hw/pci/pci.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h index 5b36334a28a..07f08aa0626 100644 --- a/include/hw/pci/pci.h +++ b/include/hw/pci/pci.h @@ -876,6 +876,18 @@ PCI_DMA_DEFINE_LDST(q_be, q_be, 64); #undef PCI_DMA_DEFINE_LDST +/** + * pci_dma_map: Map device PCI address space range into host virtual address + * + * May map a subset of the requested range, given by and returned in @plen. + * May return %NULL and set *@plen to zero(0), if resources needed to perform + * the mapping are exhausted. + * + * @dev: #PCIDevice to be accessed + * @addr: address within that device's address space + * @plen: pointer to length of buffer; updated on return + * @dir: indicates the transfer direction + */ static inline void *pci_dma_map(PCIDevice *dev, dma_addr_t addr, dma_addr_t *plen, DMADirection dir) {