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Tsirkin" , Marcel Apfelbaum , Palmer Dabbelt , Alistair Francis , Bin Meng , Weiwei Li , Daniel Henrique Barboza , Liu Zhiwei , qemu-arm@nongnu.org (open list:MCIMX7D SABRE / i...), Jason Chien Subject: [RFC PATCH 4/6] hw/riscv/riscv-iommu: Allow PCI hosts with iommu_ops registered connecting to the IOMMU Date: Mon, 16 Dec 2024 08:48:55 +0800 Message-ID: <20241216004857.9367-5-jason.chien@sifive.com> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20241216004857.9367-1-jason.chien@sifive.com> References: <20241216004857.9367-1-jason.chien@sifive.com> MIME-Version: 1.0 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=2607:f8b0:4864:20::42b; envelope-from=jason.chien@sifive.com; helo=mail-pf1-x42b.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @sifive.com) X-ZM-MESSAGEID: 1734310294569116600 Content-Type: text/plain; charset="utf-8" pci_setup_iommu_downstream_mem() is called to set the downstream memory region of the PCIe devices. Signed-off-by: Jason Chien Reviewed-by: Daniel Henrique Barboza --- hw/riscv/riscv-iommu.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/hw/riscv/riscv-iommu.c b/hw/riscv/riscv-iommu.c index e9a0775d6e..f5d53a36b2 100644 --- a/hw/riscv/riscv-iommu.c +++ b/hw/riscv/riscv-iommu.c @@ -2436,6 +2436,14 @@ void riscv_iommu_pci_setup_iommu(RISCVIOMMUState *io= mmu, PCIBus *bus, QLIST_INSERT_AFTER(last, iommu, iommus); } else if (!bus->iommu_ops && !bus->iommu_opaque) { pci_setup_iommu(bus, &riscv_iommu_ops, iommu); + } else if (bus->iommu_ops && bus->iommu_ops->set_memory_region) { + /* + * TODO: + * All memory transactions of this bus will be directed to this AS. + * We need to distinguish the source device dynamically. + */ + AddressSpace *as =3D riscv_iommu_space(iommu, 0); + pci_setup_iommu_downstream_mem(bus, as->root); } else { error_setg(errp, "can't register secondary IOMMU for PCI bus #%d", pci_bus_num(bus)); --=20 2.43.2