dev/mpr/mpr.c

141 /* Rate limit chain-fail messages to 1 per minute */
428 	 * ((SGEs per frame - 1 for chain element) * Max Chain Depth)
429 	 * + 1 for no chain needed in last frame
1446 	struct mpr_chain *chain;
1456 			chain = &sc->chains[i++];
1457 			chain->chain =(MPI2_SGE_IO_UNION *)(sc->chain_frames+o);
1458 			chain->chain_busaddr = segs[s].ds_addr + bo;
1460 			mpr_free_chain(sc, chain);
1498 		mpr_dprint(sc, MPR_ERROR, "Cannot allocate chain memory\n");
1506 		mpr_dprint(sc, MPR_ERROR, "Cannot allocate chain DMA tag\n");
1511 		mpr_dprint(sc, MPR_ERROR, "Cannot allocate chain memory\n");
1516 		mpr_dprint(sc, MPR_ERROR, "Cannot load chain memory\n");
1887 	    &sc->chain_free, 0, "number of free chain elements");
1891 	    &sc->chain_free_lowwater, 0,"lowest number of free chain elements");
1895 	    &sc->max_chains, 0,"maximum chain frames that will be allocated");
1908 	    &sc->chain_alloc_fail, "chain allocation failures");
2074 	struct mpr_chain *chain, *chain1;
2111 		TAILQ_FOREACH_SAFE(chain, &cm->cm_chain_list, chain_link,
2116 		TAILQ_FOREACH_SAFE(chain, &cm->cm_chain_list, chain_link,
2118 			sbuf_bcat(sb, chain->chain, 128);
3173 	 * Put a chain element in main message frame that points to the first
3174 	 * chain buffer.
3176 	 * NOTE:  The ChainOffset field must be 0 when using a chain pointer to
3180 	/* Set main message chain element pointer */
3184 	 * For NVMe the chain element needs to be the 2nd SGL entry in the main
3220 	/* Fill in the chain element and make it an NVMe segment type. */
3244 	 * message is the chain element, and the rest of the PRP entries are
3343 	/* Set chain element Length. */
3351  * Add a chain element as the next SGE for the specified command.
3363 	struct mpr_chain *chain;
3368 	 * Fail if a command is requesting a chain for SIMPLE SGE's.  For SAS3
3373 		mpr_dprint(sc, MPR_ERROR, "A chain element cannot be added to "
3382 	chain = mpr_alloc_chain(cm->cm_sc);
3383 	if (chain == NULL)
3390 	TAILQ_INSERT_TAIL(&cm->cm_chain_list, chain, chain_link);
3403 		 * the chain element.  To know if more than one more frame is
3405 		 * the current frame (with this chain) and the next frame.  If
3423 	ieee_sgc->Address.Low = htole32(chain->chain_busaddr);
3424 	ieee_sgc->Address.High = htole32(chain->chain_busaddr >> 32);
3425 	cm->cm_sge = &((MPI25_SGE_IO_UNION *)chain->chain)->IeeeSimple;
3437  * chain, so don't consider any chain additions.
3522  * Add one IEEE scatter-gather element (chain or simple) to the IEEE scatter-
3535 	 * case 1: No room for chain or segment (error).
3536 	 * case 2: Two or more segments left but only room for chain.
3698 				mpr_dprint(sc, MPR_INFO, "Out of chain frames, "