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charset="utf-8" X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20250220052734epcas5p2c0e082880350b5fa314c9062294bbc80 References: <20250220052724.1256642-1-vinayak.kh@samsung.com> 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=203.254.224.33; envelope-from=vinayak.kh@samsung.com; helo=mailout3.samsung.com X-Spam_score_int: -45 X-Spam_score: -4.6 X-Spam_bar: ---- X-Spam_report: (-4.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.191, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_PASS=-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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @samsung.com) X-ZM-MESSAGEID: 1740029403126019000 CXL spec 3.2 section 8.2.10.9.5.3 describes media operations commands. CXL devices supports media operations discovery command. Signed-off-by: Vinayak Holikatti --- hw/cxl/cxl-mailbox-utils.c | 133 +++++++++++++++++++++++++++++++++++++ 1 file changed, 133 insertions(+) diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c index 9c7ea5bc35..f55a2fe614 100644 --- a/hw/cxl/cxl-mailbox-utils.c +++ b/hw/cxl/cxl-mailbox-utils.c @@ -89,6 +89,7 @@ enum { SANITIZE =3D 0x44, #define OVERWRITE 0x0 #define SECURE_ERASE 0x1 + #define MEDIA_OPERATIONS 0x2 PERSISTENT_MEM =3D 0x45, #define GET_SECURITY_STATE 0x0 MEDIA_AND_POISON =3D 0x43, @@ -1721,6 +1722,134 @@ static CXLRetCode cmd_sanitize_overwrite(const stru= ct cxl_cmd *cmd, return CXL_MBOX_BG_STARTED; } =20 +enum { + MEDIA_OP_CLASS_GENERAL =3D 0x0, + #define MEDIA_OP_GEN_SUBC_DISCOVERY 0x0 + MEDIA_OP_CLASS_SANITIZE =3D 0x1, + #define MEDIA_OP_SAN_SUBC_SANITIZE 0x0 + #define MEDIA_OP_SAN_SUBC_ZERO 0x1 + MEDIA_OP_CLASS_MAX +}; + +struct media_op_supported_list_entry { + uint8_t media_op_class; + uint8_t media_op_subclass; +}; + +struct media_op_discovery_out_pl { + uint64_t dpa_range_granularity; + uint16_t total_supported_operations; + uint16_t num_of_supported_operations; + struct media_op_supported_list_entry entry[]; +} QEMU_PACKED; + +static const struct media_op_supported_list_entry media_op_matrix[] =3D { + { MEDIA_OP_CLASS_GENERAL, MEDIA_OP_GEN_SUBC_DISCOVERY }, + { MEDIA_OP_CLASS_SANITIZE, MEDIA_OP_SAN_SUBC_SANITIZE }, + { MEDIA_OP_CLASS_SANITIZE, MEDIA_OP_SAN_SUBC_ZERO }, +}; + +static CXLRetCode media_operations_discovery(uint8_t *payload_in, + size_t len_in, + uint8_t *payload_out, + size_t *len_out) +{ + struct { + uint8_t media_operation_class; + uint8_t media_operation_subclass; + uint8_t rsvd[2]; + uint32_t dpa_range_count; + struct { + uint16_t start_index; + uint16_t num_ops; + } discovery_osa; + } QEMU_PACKED *media_op_in_disc_pl =3D (void *)payload_in; + int count =3D 0; + int num_ops =3D 0; + int start_index =3D 0; + int i =3D 0; + uint32_t dpa_range_count =3D 0; + struct media_op_discovery_out_pl *media_out_pl =3D NULL; + + if (len_in < sizeof(*media_op_in_disc_pl)) { + return CXL_MBOX_INVALID_PAYLOAD_LENGTH; + } + + media_out_pl =3D (struct media_op_discovery_out_pl *)payload_out; + num_ops =3D media_op_in_disc_pl->discovery_osa.num_ops; + start_index =3D media_op_in_disc_pl->discovery_osa.start_index; + dpa_range_count =3D media_op_in_disc_pl->dpa_range_count; + + /* + * As per spec CXL 3.2 8.2.10.9.5.3 dpa_range_count + * should be zero for discovery sub class command + */ + if (dpa_range_count) { + return CXL_MBOX_INVALID_INPUT; + } + + if (start_index + num_ops > ARRAY_SIZE(media_op_matrix)) { + return CXL_MBOX_INVALID_INPUT; + } + + media_out_pl->dpa_range_granularity =3D CXL_CACHE_LINE_SIZE; + media_out_pl->total_supported_operations =3D + ARRAY_SIZE(media_op_matrix); + if (num_ops > 0) { + for (i =3D start_index; i < start_index + num_ops; i++) { + media_out_pl->entry[count].media_op_class =3D + media_op_matrix[i].media_op_class; + media_out_pl->entry[count].media_op_subclass =3D + media_op_matrix[i].media_op_subclass; + count++; + if (count =3D=3D num_ops) { + break; + } + } + } + + media_out_pl->num_of_supported_operations =3D count; + *len_out =3D sizeof(struct media_op_discovery_out_pl) + + (sizeof(struct media_op_supported_list_entry) * count); + return CXL_MBOX_SUCCESS; +} + +static CXLRetCode cmd_media_operations(const struct cxl_cmd *cmd, + uint8_t *payload_in, + size_t len_in, + uint8_t *payload_out, + size_t *len_out, + CXLCCI *cci) +{ + struct { + uint8_t media_operation_class; + uint8_t media_operation_subclass; + uint8_t rsvd[2]; + uint32_t dpa_range_count; + } QEMU_PACKED *media_op_in_common_pl =3D (void *)payload_in; + uint8_t media_op_cl =3D 0; + uint8_t media_op_subclass =3D 0; + + if (len_in < sizeof(*media_op_in_common_pl)) { + return CXL_MBOX_INVALID_PAYLOAD_LENGTH; + } + + media_op_cl =3D media_op_in_common_pl->media_operation_class; + media_op_subclass =3D media_op_in_common_pl->media_operation_subclass; + + switch (media_op_cl) { + case MEDIA_OP_CLASS_GENERAL: + if (media_op_subclass !=3D MEDIA_OP_GEN_SUBC_DISCOVERY) { + return CXL_MBOX_UNSUPPORTED; + } + + return media_operations_discovery(payload_in, len_in, payload_out, + len_out); + default: + return CXL_MBOX_UNSUPPORTED; + } +} + static CXLRetCode cmd_get_security_state(const struct cxl_cmd *cmd, uint8_t *payload_in, size_t len_in, @@ -2864,6 +2993,10 @@ static const struct cxl_cmd cxl_cmd_set[256][256] = =3D { CXL_MBOX_SECURITY_STATE_CHANGE | CXL_MBOX_BACKGROUND_OPERATION | CXL_MBOX_BACKGROUND_OPERATION_ABORT)}, + [SANITIZE][MEDIA_OPERATIONS] =3D { "MEDIA_OPERATIONS", cmd_media_opera= tions, + ~0, + (CXL_MBOX_IMMEDIATE_DATA_CHANGE | + CXL_MBOX_BACKGROUND_OPERATION)}, [PERSISTENT_MEM][GET_SECURITY_STATE] =3D { "GET_SECURITY_STATE", cmd_get_security_state, 0, 0 }, [MEDIA_AND_POISON][GET_POISON_LIST] =3D { "MEDIA_AND_POISON_GET_POISON= _LIST", --=20 2.34.1