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GET /api/1.1/patches/2230519/?format=api
{ "id": 2230519, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2230519/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260429135717.3048713-10-joshualant@gmail.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/1.1/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20260429135717.3048713-10-joshualant@gmail.com>", "date": "2026-04-29T13:48:43", "name": "[RFC,QEMU,09/10] cxl-mailbox-utils: Add support for VCS bind/unbind commands.", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "a695805e7ae945e69171bc5d6badb88e4dcfef7a", "submitter": { "id": 93283, "url": "http://patchwork.ozlabs.org/api/1.1/people/93283/?format=api", "name": "Joshua Lant", "email": "joshualant@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260429135717.3048713-10-joshualant@gmail.com/mbox/", "series": [ { "id": 502144, "url": "http://patchwork.ozlabs.org/api/1.1/series/502144/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=502144", "date": "2026-04-29T13:48:40", "name": "Initial Support for VCS Switching", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/502144/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2230519/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2230519/checks/", "tags": {}, "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 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5b1f17b1804b1-48a77b19d7dmr144546745e9.22.1777471085901;\n Wed, 29 Apr 2026 06:58:05 -0700 (PDT)", "From": "Joshua Lant <joshualant@gmail.com>", "To": "linux-cxl@vger.kernel.org", "Cc": "qemu-devel@nongnu.org, Jonathan.Cameron@huawei.com,\n arpit1.kumar@samsung.com, Joshua Lant <joshualant@gmail.com>", "Subject": "[RFC QEMU PATCH 09/10] cxl-mailbox-utils: Add support for VCS\n bind/unbind commands.", "Date": "Wed, 29 Apr 2026 14:48:43 +0100", "Message-ID": "<20260429135717.3048713-10-joshualant@gmail.com>", "X-Mailer": "git-send-email 2.47.3", "In-Reply-To": "<20260429135717.3048713-1-joshualant@gmail.com>", "References": "<20260429135717.3048713-1-joshualant@gmail.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Received-SPF": "pass client-ip=2a00:1450:4864:20::335;\n envelope-from=joshualant@gmail.com; helo=mail-wm1-x335.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, 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"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "Adds support for FMAPI commands 0x5201 and 0x5202, for more\ninformation see CXL Specification v3.2 (7.6.7.2.2 and 7.6.7.2.3).\n\nSigned-off-by: Joshua Lant <joshualant@gmail.com>\n---\n hw/cxl/cxl-mailbox-utils.c | 81 +++++++++++++++++++++++++++++++++++++-\n 1 file changed, 80 insertions(+), 1 deletion(-)", "diff": "diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c\nindex 779138cdc8..cf6cb65eb6 100644\n--- a/hw/cxl/cxl-mailbox-utils.c\n+++ b/hw/cxl/cxl-mailbox-utils.c\n@@ -27,6 +27,7 @@\n #include \"system/hostmem.h\"\n #include \"qemu/range.h\"\n #include \"qapi/qapi-types-cxl.h\"\n+#include \"hw/cxl/cxl_vcs_switch.h\"\n \n #define CXL_CAPACITY_MULTIPLIER (256 * MiB)\n #define CXL_DC_EVENT_LOG_SIZE 8\n@@ -121,6 +122,9 @@ enum {\n #define IDENTIFY_SWITCH_DEVICE 0x0\n #define GET_PHYSICAL_PORT_STATE 0x1\n #define PHYSICAL_PORT_CONTROL 0x2\n+ VIRTUAL_SWITCH = 0x52,\n+ #define BIND_VPPB 0x1\n+ #define UNBIND_VPPB 0x2\n TUNNEL = 0x53,\n #define MANAGEMENT_COMMAND 0x0\n FMAPI_DCD_MGMT = 0x56,\n@@ -821,6 +825,51 @@ static CXLRetCode cmd_physical_port_control(const struct cxl_cmd *cmd,\n }\n }\n \n+/* CXL r3.2 Section 7.6.7.2.2: Bind vPPB (Opcode 5201h) */\n+static CXLRetCode cmd_bind_vppb(const struct cxl_cmd *cmd,\n+ uint8_t *payload_in,\n+ size_t len_in,\n+ uint8_t *payload_out,\n+ size_t *len_out,\n+ CXLCCI *cci)\n+{\n+ struct cxl_fmapi_bind_vppb_req_pl {\n+ uint8_t vcs_id;\n+ uint8_t vppb_id;\n+ uint8_t physp_id;\n+ uint8_t rsvd;\n+ uint16_t ld_id;\n+ } QEMU_PACKED *in = (void *)payload_in;\n+ if(!cci->vcs) {\n+ return CXL_MBOX_UNSUPPORTED;\n+ }\n+ // Multi-logical device currently not supported (force 0xFFFF).\n+ if(in->ld_id != CXL_UNSUPPORTED_LD_ID) {\n+ return CXL_MBOX_INVALID_INPUT;\n+ }\n+ return cxl_vcs_bind_vppb(cci->vcs, in->vcs_id, in->vppb_id,\n+ in->physp_id, CXL_UNSUPPORTED_LD_ID);\n+}\n+\n+/* CXL r3.2 Section 7.6.7.2.3: Unbind vPPB (Opcode 5202h) */\n+static CXLRetCode cmd_unbind_vppb(const struct cxl_cmd *cmd,\n+ uint8_t *payload_in,\n+ size_t len_in,\n+ uint8_t *payload_out,\n+ size_t *len_out,\n+ CXLCCI *cci)\n+{\n+ struct cxl_fmapi_bind_vppb_req_pl {\n+ uint8_t vcs_id;\n+ uint8_t vppb_id;\n+ uint16_t option;\n+ } QEMU_PACKED *in = (void *)payload_in;\n+ if(!cci->vcs) {\n+ return CXL_MBOX_UNSUPPORTED;\n+ }\n+ return cxl_vcs_unbind_vppb(cci->vcs, in->vcs_id, in->vppb_id, in->option);\n+}\n+\n /* CXL r3.1 Section 8.2.9.1.2: Background Operation Status (Opcode 0002h) */\n static CXLRetCode cmd_infostat_bg_op_sts(const struct cxl_cmd *cmd,\n uint8_t *payload_in,\n@@ -4903,6 +4952,36 @@ static const struct cxl_cmd cxl_cmd_set_usp_mctp[256][256] = {\n cmd_tunnel_management_cmd, ~0, 0 },\n };\n \n+static const struct cxl_cmd cxl_cmd_set_vcs_mctp[256][256] = {\n+ [INFOSTAT][IS_IDENTIFY] = { \"IDENTIFY\", cmd_infostat_identify, 0, 0 },\n+ [INFOSTAT][GET_RESPONSE_MSG_LIMIT] = { \"GET_RESPONSE_MSG_LIMIT\",\n+ cmd_get_response_msg_limit, 0, 0 },\n+ [INFOSTAT][SET_RESPONSE_MSG_LIMIT] = { \"SET_RESPONSE_MSG_LIMIT\",\n+ cmd_set_response_msg_limit, 1, 0 },\n+ [INFOSTAT][BACKGROUND_OPERATION_STATUS] = { \"BACKGROUND_OPERATION_STATUS\",\n+ cmd_infostat_bg_op_sts, 0, 0 },\n+ [INFOSTAT][BACKGROUND_OPERATION_ABORT] = { \"BACKGROUND_OPERATION_ABORT\",\n+ cmd_infostat_bg_op_abort, 0, 0 },\n+ [TIMESTAMP][GET] = { \"TIMESTAMP_GET\", cmd_timestamp_get, 0, 0 },\n+ [TIMESTAMP][SET] = { \"TIMESTAMP_SET\", cmd_timestamp_set, 8,\n+ CXL_MBOX_IMMEDIATE_POLICY_CHANGE },\n+ [LOGS][GET_SUPPORTED] = { \"LOGS_GET_SUPPORTED\", cmd_logs_get_supported,\n+ 0, 0 },\n+ [LOGS][GET_LOG] = { \"LOGS_GET_LOG\", cmd_logs_get_log, 0x18, 0 },\n+ [PHYSICAL_SWITCH][IDENTIFY_SWITCH_DEVICE] = { \"IDENTIFY_SWITCH_DEVICE\",\n+ cmd_identify_switch_device, 0, 0 },\n+ [PHYSICAL_SWITCH][GET_PHYSICAL_PORT_STATE] = { \"SWITCH_PHYSICAL_PORT_STATS\",\n+ cmd_get_physical_port_state, ~0, 0 },\n+ [PHYSICAL_SWITCH][PHYSICAL_PORT_CONTROL] = { \"SWITCH_PHYSICAL_PORT_CONTROL\",\n+ cmd_physical_port_control, 2, 0 },\n+ [VIRTUAL_SWITCH][BIND_VPPB] = { \"BIND_VPPB\",\n+ cmd_bind_vppb, ~0, 0 },\n+ [VIRTUAL_SWITCH][UNBIND_VPPB] = { \"UNBIND_VPPB\",\n+ cmd_unbind_vppb, ~0, 0 },\n+ [TUNNEL][MANAGEMENT_COMMAND] = { \"TUNNEL_MANAGEMENT_COMMAND\",\n+ cmd_tunnel_management_cmd, ~0, 0 },\n+};\n+\n void cxl_initialize_usp_mctpcci(CXLCCI *cci, DeviceState *d, DeviceState *intf,\n size_t payload_max)\n {\n@@ -4915,7 +4994,7 @@ void cxl_initialize_usp_mctpcci(CXLCCI *cci, DeviceState *d, DeviceState *intf,\n void cxl_initialize_vcs_mctpcci(CXLCCI *cci, CXLVCSSwitch *vcs, DeviceState *d,\n DeviceState *intf, size_t payload_max)\n {\n- cxl_copy_cci_commands(cci, cxl_cmd_set_usp_mctp);\n+ cxl_copy_cci_commands(cci, cxl_cmd_set_vcs_mctp);\n cci->vcs = vcs;\n cci->d = d;\n cci->intf = intf;\n", "prefixes": [ "RFC", "QEMU", "09/10" ] }