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Wed, 07 May 2025 17:18:55 -0700 (PDT) Received: from deb-101020-bm01.dtc.local ([149.97.161.244]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7405902167csm12378724b3a.98.2025.05.07.17.18.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 07 May 2025 17:18:55 -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 08/10] cxl-mailbox-utils: 0x5603 - FMAPI Get DC Region Extent Lists Date: Thu, 8 May 2025 00:01:04 +0000 Message-ID: <20250508001754.122180-9-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::42f; envelope-from=anisa.su887@gmail.com; helo=mail-pf1-x42f.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 Management command 0x5603 implemented per CXL r3.2 Spec Section 7.6.7.6.4 Very similar to previously implemented command 0x4801. Signed-off-by: Anisa Su --- hw/cxl/cxl-mailbox-utils.c | 75 ++++++++++++++++++++++++++++++++++++ include/hw/cxl/cxl_opcodes.h | 1 + 2 files changed, 76 insertions(+) diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c index fe38a13f71..a897a34ef9 100644 --- a/hw/cxl/cxl-mailbox-utils.c +++ b/hw/cxl/cxl-mailbox-utils.c @@ -3516,6 +3516,79 @@ static CXLRetCode cmd_fm_set_dc_region_config(const struct cxl_cmd *cmd, return CXL_MBOX_SUCCESS; } +/* CXL r3.2 section 7.6.7.6.4 Get DC Region Extent Lists (Opcode 5603h) */ +static CXLRetCode cmd_fm_get_dc_region_extent_list(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 rsvd[2]; + uint32_t extent_cnt; + uint32_t start_extent_id; + } QEMU_PACKED *in = (void *)payload_in; + struct { + uint16_t host_id; + uint8_t rsvd[2]; + uint32_t start_extent_id; + uint32_t extents_returned; + uint32_t total_extents; + uint32_t list_generation_num; + uint8_t rsvd2[4]; + CXLDCExtentRaw records[]; + } QEMU_PACKED *out = (void *)payload_out; + QEMU_BUILD_BUG_ON(sizeof(*in) != 0xc); + CXLType3Dev *ct3d = CXL_TYPE3(cci->d); + CXLDCExtent *ent; + CXLDCExtentRaw *out_rec; + uint16_t record_count = 0, record_done = 0, i = 0; + uint16_t out_pl_len, max_size; + + if (in->host_id != 0) { + return CXL_MBOX_INVALID_INPUT; + } + + if (in->start_extent_id > ct3d->dc.total_extent_count) { + return CXL_MBOX_INVALID_INPUT; + } + + record_count = MIN(in->extent_cnt, + ct3d->dc.total_extent_count - in->start_extent_id); + max_size = CXL_MAILBOX_MAX_PAYLOAD_SIZE - sizeof(*out); + record_count = MIN(record_count, max_size / sizeof(out->records[0])); + out_pl_len = sizeof(*out) + record_count * sizeof(out->records[0]); + + stw_le_p(&out->host_id, in->host_id); + stl_le_p(&out->start_extent_id, in->start_extent_id); + stl_le_p(&out->extents_returned, record_count); + stl_le_p(&out->total_extents, ct3d->dc.total_extent_count); + stl_le_p(&out->list_generation_num, ct3d->dc.ext_list_gen_seq); + + if (record_count > 0) { + QTAILQ_FOREACH(ent, &ct3d->dc.extents, node) { + if (i++ < in->start_extent_id) { + continue; + } + out_rec = &out->records[record_done]; + stq_le_p(&out_rec->start_dpa, ent->start_dpa); + stq_le_p(&out_rec->len, ent->len); + memcpy(&out_rec->tag, ent->tag, 0x10); + stw_le_p(&out_rec->shared_seq, ent->shared_seq); + + record_done++; + if (record_done == record_count) { + break; + } + } + } + + *len_out = out_pl_len; + 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 }, @@ -3649,6 +3722,8 @@ 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][GET_DC_REGION_EXTENT_LIST] = { "GET_DC_REGION_EXTENT_LIST", + cmd_fm_get_dc_region_extent_list, 12, 0 }, }; /* diff --git a/include/hw/cxl/cxl_opcodes.h b/include/hw/cxl/cxl_opcodes.h index ed4be23b75..ad4e614daa 100644 --- a/include/hw/cxl/cxl_opcodes.h +++ b/include/hw/cxl/cxl_opcodes.h @@ -65,5 +65,6 @@ enum { #define GET_DCD_INFO 0x0 #define GET_HOST_DC_REGION_CONFIG 0x1 #define SET_DC_REGION_CONFIG 0x2 + #define GET_DC_REGION_EXTENT_LIST 0x3 GLOBAL_MEMORY_ACCESS_EP_MGMT = 0X59 }; -- 2.47.2