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Wed, 07 May 2025 17:18:59 -0700 (PDT) Received: from deb-101020-bm01.dtc.local ([149.97.161.244]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7405902167csm12378724b3a.98.2025.05.07.17.18.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 07 May 2025 17:18:59 -0700 (PDT) From: anisa.su887@gmail.com To: qemu-devel@nongnu.org Cc: Jonathan.Cameron@huawei.com, nifan.cxl@gmail.com, dave@stgolabs.net, linux-cxl@vger.kernel.org, Anisa Su Subject: [PATCH v2 10/10] cxl-mailbox-utils: 0x5605 - FMAPI Initiate DC Release Date: Thu, 8 May 2025 00:01:06 +0000 Message-ID: <20250508001754.122180-11-anisa.su887@gmail.com> X-Mailer: git-send-email 2.47.2 In-Reply-To: <20250508001754.122180-1-anisa.su887@gmail.com> References: <20250508001754.122180-1-anisa.su887@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::42b; envelope-from=anisa.su887@gmail.com; helo=mail-pf1-x42b.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 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, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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: 2.1.29 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 From: Anisa Su FM DCD Managment command 0x5605 implemented per CXL r3.2 Spec Section 7.6.7.6.6 Signed-off-by: Anisa Su --- hw/cxl/cxl-mailbox-utils.c | 56 ++++++++++++++++++++++++++++++++++++ include/hw/cxl/cxl_opcodes.h | 1 + 2 files changed, 57 insertions(+) diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c index 9b176dea08..28266b16f7 100644 --- a/hw/cxl/cxl-mailbox-utils.c +++ b/hw/cxl/cxl-mailbox-utils.c @@ -3638,6 +3638,10 @@ static CXLRetCode cxl_mbox_dc_prescriptive_sanity_check(CXLType3Dev *dcd, ext.start_dpa, ext.len)) { return CXL_MBOX_INVALID_EXTENT_LIST; } + } else if (type == DC_EVENT_RELEASE_CAPACITY) { + if (!ct3_test_region_block_backed(dcd, ext.start_dpa, ext.len)) { + return CXL_MBOX_INVALID_PA; + } } } @@ -3777,6 +3781,51 @@ static CXLRetCode cmd_fm_initiate_dc_add(const struct cxl_cmd *cmd, return CXL_MBOX_SUCCESS; } +#define CXL_EXTENT_REMOVAL_POLICY_MASK 0x7 +/* CXL r3.2 Section 7.6.7.6.6 Initiate Dynamic Capacity Release (Opcode 5605h) */ +static CXLRetCode cmd_fm_initiate_dc_release(const struct cxl_cmd *cmd, + uint8_t *payload_in, + size_t len_in, + uint8_t *payload_out, + size_t *len_out, + CXLCCI *cci) +{ + struct { + uint16_t host_id; + uint8_t flags; + uint8_t reg_num; + uint64_t length; + uint8_t tag[0x10]; + uint32_t ext_count; + CXLDCExtentRaw extents[]; + } QEMU_PACKED *in = (void *)payload_in; + CXLType3Dev *ct3d = CXL_TYPE3(cci->d); + int rc; + + switch (in->flags & CXL_EXTENT_REMOVAL_POLICY_MASK) { + case CXL_EXTENT_REMOVAL_POLICY_PRESCRIPTIVE: + rc = cxl_mbox_dc_prescriptive_sanity_check(ct3d, + in->host_id, + in->ext_count, + in->extents, + DC_EVENT_RELEASE_CAPACITY); + if (rc) { + return rc; + } + cxl_mbox_create_dc_event_records_for_extents(ct3d, + DC_EVENT_RELEASE_CAPACITY, + in->extents, + in->ext_count); + return CXL_MBOX_SUCCESS; + default: + qemu_log_mask(LOG_UNIMP, + "CXL extent selection policy not supported.\n"); + return CXL_MBOX_INVALID_INPUT; + } + + return CXL_MBOX_SUCCESS; +} + static const struct cxl_cmd cxl_cmd_set[256][256] = { [INFOSTAT][BACKGROUND_OPERATION_ABORT] = { "BACKGROUND_OPERATION_ABORT", cmd_infostat_bg_op_abort, 0, 0 }, @@ -3919,6 +3968,13 @@ static const struct cxl_cmd cxl_cmd_set_fm_dcd[256][256] = { CXL_MBOX_CONFIG_CHANGE_CXL_RESET | CXL_MBOX_IMMEDIATE_CONFIG_CHANGE | CXL_MBOX_IMMEDIATE_DATA_CHANGE) }, + [FMAPI_DCD_MGMT][INITIATE_DC_RELEASE] = { "INIT_DC_RELEASE", + cmd_fm_initiate_dc_release, ~0, + (CXL_MBOX_CONFIG_CHANGE_COLD_RESET | + CXL_MBOX_CONFIG_CHANGE_CONV_RESET | + CXL_MBOX_CONFIG_CHANGE_CXL_RESET | + CXL_MBOX_IMMEDIATE_CONFIG_CHANGE | + CXL_MBOX_IMMEDIATE_DATA_CHANGE) }, }; /* diff --git a/include/hw/cxl/cxl_opcodes.h b/include/hw/cxl/cxl_opcodes.h index 72ea0a7d44..7ac6cb9f34 100644 --- a/include/hw/cxl/cxl_opcodes.h +++ b/include/hw/cxl/cxl_opcodes.h @@ -67,5 +67,6 @@ enum { #define SET_DC_REGION_CONFIG 0x2 #define GET_DC_REGION_EXTENT_LIST 0x3 #define INITIATE_DC_ADD 0x4 + #define INITIATE_DC_RELEASE 0x5 GLOBAL_MEMORY_ACCESS_EP_MGMT = 0X59 }; -- 2.47.2