56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana * This file and its contents are supplied under the terms of the
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana * Common Development and Distribution License ("CDDL"), version 1.0.
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana * You may only use this file in accordance with the terms of version
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana * 1.0 of the CDDL.
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana * A full copy of the text of the CDDL should have accompanied this
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana * source. A copy of the CDDL is also available via the Internet at
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana * This file is part of the Chelsio T4 support code.
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana * Copyright (C) 2011-2013 Chelsio Communications. All rights reserved.
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana * This program is distributed in the hope that it will be useful, but WITHOUT
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana * FITNESS FOR A PARTICULAR PURPOSE. See the LICENSE file included in this
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana * release for licensing terms and conditions.
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushanastatic int rxbuf_ctor(void *, void *, int);
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushanastatic void rxbuf_dtor(void *, void *);
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushanacxgb_printf(dev_info_t *dip, int level, char *f, ...)
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana (void) snprintf(fmt, sizeof (fmt), "%s%d: %s", ddi_driver_name(dip),
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushanarxbuf_cache_create(struct rxbuf_cache_params *p)
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana (void) snprintf(name, sizeof (name), "%s%d_rxbuf_cache",
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana ddi_driver_name(p->dip), ddi_get_instance(p->dip));
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana return kmem_cache_create(name, sizeof (struct rxbuf), CACHE_LINE,
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana rxbuf_ctor, rxbuf_dtor, NULL, p, NULL, 0);
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushanarxbuf_cache_destroy(kmem_cache_t *cache)
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana * If ref_cnt is more than 1 then those many calls to rxbuf_free will
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana * have to be made before the rxb is released back to the kmem_cache.
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushanarxbuf_alloc(kmem_cache_t *cache, int kmflags, uint_t ref_cnt)
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana rxb = kmem_cache_alloc(cache, kmflags);
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana * This is normally called via the rxb's freefunc, when an mblk referencing the
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana * rxb is freed.
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana if (atomic_dec_uint_nv(&rxb->ref_cnt) == 0)
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushanarxbuf_ctor(void *arg1, void *arg2, int kmflag)
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana rc = ddi_dma_alloc_handle(p->dip, &p->dma_attr_rx, callback, 0,
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana return (rc == DDI_DMA_BADATTR ? EINVAL : ENOMEM);
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana rc = ddi_dma_mem_alloc(rxb->dhdl, p->buf_size, &p->acc_attr_rx,
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana DDI_DMA_STREAMING, callback, 0, &rxb->va, &real_len, &rxb->ahdl);
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana rc = ddi_dma_addr_bind_handle(rxb->dhdl, NULL, rxb->va, p->buf_size,
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushana DDI_DMA_READ | DDI_DMA_STREAMING, NULL, NULL, &cookie, &ccount);
56b2bdd1f04d465cfe4a95b88ae5cba5884154e4Gireesh Nagabhushanafail3: (void) ddi_dma_unbind_handle(rxb->dhdl);