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Mon, 24 Jul 2023 09:23:22 -0700 From: Fan Ni To: "qemu-devel@nongnu.org" CC: "jonathan.cameron@huawei.com" , "linux-cxl@vger.kernel.org" , "gregory.price@memverge.com" , "hchkuo@avery-design.com.tw" , "cbrowy@avery-design.com" , "ira.weiny@intel.com" , "dan.j.williams@intel.com" , Adam Manzanares , "dave@stgolabs.net" , "nmtadam.samsung@gmail.com" , "nifan@outlook.com" , Fan Ni Subject: [Qemu PATCH RESEND 0/9] Enabling DCD emulation support in Qemu Thread-Topic: [Qemu PATCH RESEND 0/9] Enabling DCD emulation support in Qemu Thread-Index: AQHZvksp2bw7Dgb440GNbJM6Ngh03A== Date: Mon, 24 Jul 2023 16:23:22 +0000 Message-ID: <20230724162313.34196-1-fan.ni@samsung.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.25.1 x-originating-ip: [105.128.2.176] MIME-Version: 1.0 X-CFilter-Loop: Reflected X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrFKsWRmVeSWpSXmKPExsWy7djX87rVS/elGHxdIm7RfX4Do8X0qRcY LVbfXMNo0dD0iMWiZfd7Jov9T5+zWKxaeI3N4vysUywWzyc+Z7JYuuQRs8Xx3h0sDtweFyZP YPVY3ODqsXPWXXaPliNvgbw9L5k8Nn78z+7x5NpmJo/Nr18we0ydXe/xeZNcAFcUl01Kak5m WWqRvl0CV8bUyxeYCw5JVPzc+Jy9gbFLpIuRk0NCwETi0a6trF2MXBxCAisZJa49e8YC4bQy STRP/cQIU/Vy0WVmiMRaRomWtdMZIZxPjBLLzzRDtSxjlLi+oIcdpIVNQFFiX9d2NhBbRMBY 4tjhJWDtzAJvWSQ+rnkD1MHBISzgLtE9LRqixkdi8eZ17CBhEQE9iT8nYkHCLAKqEod29ION 5BUwlziy/QXYRYwCYhLfT61hArGZBcQlbj2ZzwRxqaDEotl7mCFsMYl/ux6yQdjyEpN/zICy FSXuf3/JDtGrJ3Fj6hQ2CFtbYtnC18wQuwQlTs58wgJRLylxcMUNsB8lBH5wSNy88wNqkIvE 1007oEEkLfH37jImkPslBJIlVn3kggjnSMxfsgVqjrXEwj/roW7mk/j76xHjBEblWUhemIXk pFlITpqF5KQFjCyrGMVLi4tz01OLDfNSy/WKE3OLS/PS9ZLzczcxApPb6X+Hc3cw7rj1Ue8Q IxMH4yFGCQ5mJRFew5h9KUK8KYmVValF+fFFpTmpxYcYpTlYlMR5DW1PJgsJpCeWpGanphak FsFkmTg4pRqYgl4bMXRPnDXhSJgZ5yLOjksXufmbewTqWV7p9vKbrnt5Ypvnwp/uJj1u041u eq1+xjzza9TGzvsv+lxZE38ddl7uV3gq/nrshf07zGJORew68VZ1Q8bUoMkWjnfPPP2iu0jb lJFBps3dbYnl10zmI21le1Z6iH1knOzhoDT5yHqDN3XPdm//JsDNw+nNFSbtcWLaQcX7h5If CSv07bJVSzPP/trN4f257dNks7KZpX2RawsbPdt8VObPaN50c6PWvc/JRVwL1ld77na5ziy1 ubphV3K3rKSGy8tFz/J+cSyK67n/71z9ir51z+9VTgly8PUXUOHuu3V8ss2bPQY7tqvsnf5U cZ/XzL/dUyuNlViKMxINtZiLihMBphrBzN0DAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrPIsWRmVeSWpSXmKPExsWS2cA0Sbdq6b4Ug71HDSy6z29gtJg+9QKj xeqbaxgtGpoesVi07H7PZLH/6XMWi1ULr7FZnJ91isXi+cTnTBZLlzxitjjeu4PFgdvjwuQJ rB6LG1w9ds66y+7RcuQtkLfnJZPHxo//2T2eXNvM5LH59Qtmj6mz6z0+b5IL4IrisklJzcks Sy3St0vgyph6+QJzwSGJip8bn7M3MHaJdDFyckgImEi8XHSZuYuRi0NIYDWjxLd9fxkhnE+M Eof23WGHcJYxSrTPmMwG0sImoCixr2s7mC0iYCxx7PASZhCbWeA1i8S3i9xdjBwcwgLuEt3T oiFKfCQWb17HDhIWEdCT+HMiFiTMIqAqcWhHPzuIzStgLnFk+wtGEJtRQEzi+6k1TBATxSVu PZnPBHGogMSSPeeZIWxRiZeP/7FC2PISk3/MYIOwFSXuf3/JDtGrJ3Fj6hQ2CFtbYtnC18wQ uwQlTs58wgJRLylxcMUNlgmMYrOQrJuFpH0WkvZZSNoXMLKsYhQvLS7OTa8oNspLLdcrTswt Ls1L10vOz93ECIzz0/8OR+9gvH3ro94hRiYOxkOMEhzMSiK8hjH7UoR4UxIrq1KL8uOLSnNS iw8xSnOwKInzvoyaGC8kkJ5YkpqdmlqQWgSTZeLglGpgMn491evguhJRzqf9C0IbDorGza9N 4a1k4/ffzXmeuVFG2zlz894kq8LvBhdmHSjh6bqpp7d95eQnmu5Pl77mSt809XDMPLcTb86w dTXUvnoeNefWZ1kTf54ZZ/dIREtJL4iWccnbfUDxUtekYHW5xXXT3os83SJq0hrj8mI5885H cyawm1VPFFYs0Fiv81Zhg8yj/q818VsaMnLUJEsF2HTj75Q8fff+6ppN4et+BM/Zbb68OefF M5e3W9UTXG7ddLQ+c6lQ/k9oXwZX19mZAktVLnF99pT0btjKuHCTkIsEb535cfFtu701BR6s 32Of/7hmO89qU/tqjdPhNof3PFuZ1ON93uiEsIj97dqPSizFGYmGWsxFxYkA+ipbG2IDAAA= X-CMS-MailID: 20230724162322uscas1p2578574c26c5d5b92c695bc36404242c2 CMS-TYPE: 301P X-CMS-RootMailID: 20230724162322uscas1p2578574c26c5d5b92c695bc36404242c2 References: Received-SPF: pass client-ip=211.189.100.12; envelope-from=fan.ni@samsung.com; helo=mailout2.w2.samsung.com X-Spam_score_int: -70 X-Spam_score: -7.1 X-Spam_bar: ------- X-Spam_report: (-7.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org The patch series provides dynamic capacity device (DCD) emulation in Qemu. More specifically, it provides the following functionalities: 1. Extended type3 memory device to support DC regions and extents. 2. Implemented DCD related mailbox command support in CXL r3.0: 8.2.9.8.9. 3. ADD QMP interfaces for adding and releasing DC extents to simulate FM functions for DCD described in cxl r3.0: 7.6.7.6.5 and 7.6.7.6.6. 4. Add new ct3d properties for DCD devices (host backend, number of dc regions, etc.) 5. Add read/write support from/to DC regions of the device. 6. Add mechanism to validate accessed to DC region address space. A more detailed description can be found from the previously posted RFC[1]. Compared to the previously posted RFC[1], following changes have been made: 1. Rebased the code on top of Jonathan's branch https://gitlab.com/jic23/qemu/-/tree/cxl-2023-05-25. 2. Extracted the rename of mem_size to a separated patch.(Jonathan) 3. Reordered the patch series to improve its readability.(Jonathan) 4. Split the validation of accesses to DC region address space as a separate patch. 5. Redesigned the QMP interfaces for adding and releasing DC extents to make them easier to understand and act like existing QMP interfaces (like the interface for cxl-inject-uncorrectable-errors). (Jonathan) 6. Updated dvsec range register setting to support DCD devices without static capacity. 7. Fixed issues mentioned in the comments (Jonathan&Nathan Fontenot). 8. Fixed the format issue and checked with checkpatch.pl under qemu code dir. The code is tested with the DCD patch series at the kernel side[2]. The test is similar to those mentioned in the cover letter of [1]. [1]: https://lore.kernel.org/all/20230511175609.2091136-1-fan.ni@samsung.com/ [2]: https://lore.kernel.org/linux-cxl/649da378c28a3_968bb29420@iweiny-mobl.notmuch/T/#t Fan Ni (9): hw/cxl/cxl-mailbox-utils: Add dc_event_log_size field to output payload of identify memory device command hw/cxl/cxl-mailbox-utils: Add dynamic capacity region representative and mailbox command support include/hw/cxl/cxl_device: Rename mem_size as static_mem_size for type3 memory devices hw/mem/cxl_type3: Add support to create DC regions to type3 memory devices hw/mem/cxl_type3: Add host backend and address space handling for DC regions hw/mem/cxl_type3: Add DC extent list representative and get DC extent list mailbox support hw/cxl/cxl-mailbox-utils: Add mailbox commands to support add/release dynamic capacity response hw/cxl/events: Add qmp interfaces to add/release dynamic capacity extents hw/mem/cxl_type3: Add dpa range validation for accesses to dc regions hw/cxl/cxl-mailbox-utils.c | 421 +++++++++++++++++++++++++++- hw/mem/cxl_type3.c | 539 +++++++++++++++++++++++++++++++++--- hw/mem/cxl_type3_stubs.c | 6 + include/hw/cxl/cxl_device.h | 49 +++- include/hw/cxl/cxl_events.h | 16 ++ qapi/cxl.json | 49 ++++ 6 files changed, 1034 insertions(+), 46 deletions(-)