System and method for overcoming in-band interrupt starvation with dynamic address remapping

A method, comprising:

• coupling an Improved Inter-Integrated Circuit (I3C) master interface of a processor to a first I3C slave interface of first device separate from the processor, wherein the first I3C slave interface has a first I3C address;
• providing, by the first I3C slave interface, first In-Band Interrupts (IBIs) to the I3C master interface;
• receiving, by the processor, the first IBIs;
• coupling the I3C master interface to a second I3C slave interface of second device separate from the processor, wherein the second I3C slave interface has a second I3C address;
• providing, by the second I3C slave interface, second IBIs to the I3C master interface;
• determining, by the processor, that the second IBIs are masked by the first IBIs due to the second I3C address being higher than the first I3C address;
• assigning, by the processor, a third I3C address to one of the first I3C slave interface and the second I3C slave interface in response to determining that the second IBIs are masked by the first IBIs;
• and
• assigning a fourth I3C address to the other one of the first I3C slave interface and the second I3C slave interface in further response to determining that the second IBIs are masked by the first IBIs.

An information handling system, comprising:

• a processor including an I3C master interface;
• a first device including a first I3C slave interface coupled to the I3C master interface, the first I3C slave interface configured to provide first IBIs to the I3C master interface and having a first I3C address;
• and
• a second device including a second I3C slave interface coupled to the I3C master interface, the second I3C slave interface configured to provide second IBIs to the I3C master interface and having a second I3C address, wherein the second I3C address is higher than the first I3C address;
• wherein the processor is configured a) to determine a frequency of the second IBIs, b) to determine, based upon the frequency of the second IBIs, whether the second IBIs are masked by the first IBIs due to the second I3C address being higher than the first I3C address, and c), in response to determining that the second IBIs are masked by the first IBIs, to assign a third I3C address to the second I3C slave interface and to assign a fourth I3C address to the first I3C slave interface, wherein the third I3C address is lower than the first I3C address.