Set Channel Access 详情
更新时间：2025/06/26
在Gitcode上查看源码修订记录
| openUBMC版本号 | 修订日期 | 修订人 | 修订内容 |
|---|---|---|---|
| 25.06 | 2025/06/26 | pengqiang-gs | 初稿，新增命令详情 |
基本信息
功能说明
标准命令，设置通道的访问属性。 This command is used to configure whether channels are enabled or disabled, whether alerting is enabled or disabled for a channel, and to set which system modes channels are available under.
权限
UserMgmt
命令信息
请求信息
| 字节顺序 | 域取值说明 |
|---|---|
| 1 | [7:4] - reserved [3:0] - Channel number |
| 2 | [7:6] - 00b = don’t set or change Channel Access 01b = set non-volatile Channel Access according to bits [5:0] 10b = set volatile (active) setting of Channel Access according to bits[5:0] 11b = reserved [5] - PEF Alerting Enable/Disable. This bit globally gates whether PEF alerts can be issued from the given channel. Setting this to enable PEF alerting is a necessary part of enabling alerts for the channel, but for alerts to be generated the PEF and channel configuration must also be set to enable alerting. The setting this bit to 'enable' does not alter the PEF configuration or the alerting settings in the channel's configuration parameters. For example, if PEF is not configured for generating an alert, enabling PEF alerting with this bit will not change that configuration. Setting this bit to 'disable' will block PEF -generated alerts regardless of the PEF and channel configuration parameters. 0b = enable PEF Alerting 1b = disable PEF Alerting on this channel (the Alert Immediate command can still be used to generate alerts) [4] - Per-message Authentication Enable/Disable. This bit is ignored for channels (e.g. serial/modem) that do not support Per-message Authentication. 0b = enable Per-message Authentication 1b = disable Per-message Authentication. [Authentication required to activate any session on this channel, but authentication not used on subsequent packets for the session.] [3] - User Level Authentication Enable/Disable. Optional. Return a CCh ‘invalid data field’ error completion code if an attempt is made to set this bit, but the option is not supported. 0b = enable User Level Authentication. All User Level commands are to be authenticated per the Authentication Type that was negotiated when the session was activated. 1b = disable User Level Authentication. Allow User Level commands to be executed without being authenticated. If the option to disable User Level Command authentication is accepted, the BMC will accept packets with Authentication Type set to None if they contain user level commands. For outgoing packets, the BMC returns responses with the same Authentication Type that was used for the request. [2:0] - Access Mode for IPMI messaging (PEF Alerting is enabled/disabled separately from IPMI messaging, see bit 5) 000b = disabled channel disabled for IPMI messaging 001b = pre-boot only channel only available when system is in a powered down state or in BIOS prior to start of boot. 010b = always available channel always available for communication regardless of system mode. BIOS typically dedicates the serial connection to the BMC. 011b = shared same as always available, but BIOS typically leaves the serial port available for software use |
| 3 | Channel Privilege Level Limit. This value sets the maximum privilege level that can be accepted on the specified channel. [7:6] - 00b = don’t set or change channel Privilege Level Limit 01b = set non-volatile Privilege Level Limit according to bits [3:0] 10b = set volatile setting of Privilege Level Limit according to bits [3:0] 11b = reserved [5:4] - reserved [3:0] - Channel Privilege Level Limit 0h = reserved 1h = CALLBACK level 2h = USER level 3h = OPERATOR level 4h = ADMINISTRATOR level 5h = OEM Proprietary level |
响应信息
| 字节顺序 | 域取值说明 |
|---|---|
| 1 | Completion Code, generic, plus following command-specific completion codes: 82h = set not supported on selected channel (e.g. channel is sessionless.) 83h = access mode not supported |
命令样例
样例1：设置通道1的访问属性
- 请求：
- 响应：