9377  *	t4_bar2_sge_qregs - return BAR2 SGE Queue register information
9382  *	@pbar2_qoffset: BAR2 Queue Offset
9383  *	@pbar2_qid: BAR2 Queue ID or 0 for Queue ID inferred SGE Queues
9385  *	Returns the BAR2 SGE Queue Registers information associated with the
9390  *	This may return an error which indicates that BAR2 SGE Queue
9394  *	  *@pbar2_qoffset: the BAR2 Offset of the @qid Registers
9395  *	  *@pbar2_qid: the BAR2 SGE Queue ID or 0 of @qid
9397  *	If the returned BAR2 Queue ID is 0, then BAR2 SGE registers which
9399  *	Write Combining Doorbell Buffer. If the BAR2 Queue ID is not 0,
9413 	/* T4 doesn't support BAR2 SGE Queue registers for kernel  in t4_bar2_sge_qregs()
9431 	/* Calculate the basics of the BAR2 SGE Queue register area:  in t4_bar2_sge_qregs()
9432 	 *  o The BAR2 page the Queue registers will be in.  in t4_bar2_sge_qregs()
9433 	 *  o The BAR2 Queue ID.  in t4_bar2_sge_qregs()
9434 	 *  o The BAR2 Queue ID Offset into the BAR2 page.  in t4_bar2_sge_qregs()
9440 	/* If the BAR2 Queue ID Offset is less than the Page Size, then the  in t4_bar2_sge_qregs()
9442 	 * the BAR2 Queue ID Offset within the BAR2 Page (and we need to use a  in t4_bar2_sge_qregs()
9443 	 * BAR2 Queue ID of 0 for those writes).  Otherwise, we'll simply  in t4_bar2_sge_qregs()
9444 	 * write to the first BAR2 SGE Queue Area within the BAR2 Page with  in t4_bar2_sge_qregs()
9445 	 * the BAR2 Queue ID and the hardware will infer the Absolute Queue ID  in t4_bar2_sge_qregs()
9446 	 * from the BAR2 Page and BAR2 Queue ID.  in t4_bar2_sge_qregs()
9448 	 * One important censequence of this is that some BAR2 SGE registers  in t4_bar2_sge_qregs()
9449 	 * have a "Queue ID" field and we can write the BAR2 SGE Queue ID  in t4_bar2_sge_qregs()
9452 	 * Buffer is a good example.  These BAR2 SGE Registers are only  in t4_bar2_sge_qregs()
9453 	 * available for those BAR2 SGE Register areas where the SGE Absolute  in t4_bar2_sge_qregs()
9581 	/* egress queues: log2 of # of doorbells per BAR2 page */  in t4_init_sge_params()
9587 	/* ingress queues: log2 of # of doorbells per BAR2 page */  in t4_init_sge_params()