Credit synchronization by sending a value for a local credit in a message sender from a message receiver to the message sender in response to a synchronization trigger

A system, comprising:

• a message receiver in a System On Chip (SOC), wherein the message receiver:
• obtains a synchronization trigger associated with synchronizing credit;
• and
• in response to receiving the synchronization trigger, sends, from the message receiver to a message sender in the SOC, a value for a local credit in the message sender;
• and
• the message sender, wherein:
• the message sender updates the local credit with the value for the credit that is received from the message receiver;
• a requirement to send a message from the message sender to the message receiver is that the local credit has a non-zero value;
• the SOC is associated with a storage controller;
• and
• the storage controller further includes a plurality of channel interface modules, wherein each of the plurality of channel interface modules independently acts as a message receiver.

A system, comprising:

• a message receiver in a System On Chip (SOC), wherein the message receiver:
• obtains a synchronization trigger associated with synchronizing credit;
• and
• in response to receiving the synchronization trigger, sends, from the message receiver to a message sender in the SOC, a value for a local credit in the message sender;
• and
• the message sender, wherein:
• the message sender updates the local credit with the value for the credit that is received from the message receiver;
• a requirement to send a message from the message sender to the message receiver is that the local credit has a non-zero value;
• the SOC is associated with a storage controller;
• the storage controller includes a firmware complex which in turn includes a processor module and firmware;
• and
• the storage controller further includes a plurality of hardware functional modules that access a buffer, wherein each of the plurality of hardware functional modules independently acts as a message receiver with the firmware complex as the message sender.

A method, comprising:

• obtaining, at a message receiver in a System On Chip (SOC), a synchronization trigger associated with synchronizing credit;
• in response to receiving the synchronization trigger, sending, from the message receiver to a message sender in the SOC, a value for a local credit in the message sender;
• and
• updating, at the message sender, the local credit with the value for the credit that is received from the message receiver, wherein a requirement to send a message from the message sender to the message receiver is that the local credit has a non-zero value, wherein:
• obtaining the synchronization trigger includes enabling, at the message receiver, the synchronization trigger during initialization of the message receiver;
• and
• the message receiver is included in a hardware functional module in the SOC.

A method, comprising:

• obtaining, at a message receiver in a System On Chip (SOC), a synchronization trigger associated with synchronizing credit;
• in response to receiving the synchronization trigger, sending, from the message receiver to a message sender in the SOC, a value for a local credit in the message sender;
• and
• updating, at the message sender, the local credit with the value for the credit that is received from the message receiver, wherein a requirement to send a message from the message sender to the message receiver is that the local credit has a non-zero value, wherein:
• the SOC is associated with a storage controller;
• and
• the storage controller further includes a plurality of channel interface modules, wherein each of the plurality of channel interface modules independently acts as a message receiver.

A method, comprising:

• obtaining, at a message receiver in a System On Chip (SOC), a synchronization trigger associated with synchronizing credit;
• in response to receiving the synchronization trigger, sending, from the message receiver to a message sender in the SOC, a value for a local credit in the message sender;
• and
• updating, at the message sender, the local credit with the value for the credit that is received from the message receiver, wherein a requirement to send a message from the message sender to the message receiver is that the local credit has a non-zero value, wherein:
• the SOC is associated with a storage controller;
• the storage controller includes a firmware complex which in turn includes a processor module and firmware;
• and
• the storage controller further includes a plurality of hardware functional modules that access a buffer, wherein each of the plurality of hardware functional modules independently acts as a message receiver with the firmware complex as the message sender.