1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
17  * 3. Neither the name of the Emulex Corporation nor the names of its
34  * freebsd-drivers@emulex.com
64 	rc = bus_dma_tag_create(bus_get_dma_tag(sc->dev),  in oce_dma_alloc()
69 				size, 1, size, 0, NULL, NULL, &dma->tag);  in oce_dma_alloc()
72 		rc = bus_dmamem_alloc(dma->tag,  in oce_dma_alloc()
73 				      &dma->ptr,  in oce_dma_alloc()
76 				      &dma->map);  in oce_dma_alloc()
79 	dma->paddr = 0;  in oce_dma_alloc()
81 		rc = bus_dmamap_load(dma->tag,  in oce_dma_alloc()
82 				     dma->map,  in oce_dma_alloc()
83 				     dma->ptr,  in oce_dma_alloc()
86 				     &dma->paddr, flags | BUS_DMA_NOWAIT);  in oce_dma_alloc()
87 		if (dma->paddr == 0)  in oce_dma_alloc()
105 	if (dma->tag == NULL)  in oce_dma_free()
108 	if (dma->paddr != 0) {  in oce_dma_free()
109 		bus_dmamap_sync(dma->tag, dma->map,  in oce_dma_free()
111 		bus_dmamap_unload(dma->tag, dma->map);  in oce_dma_free()
112 		dma->paddr = 0;  in oce_dma_free()
115 	if (dma->ptr != NULL) {  in oce_dma_free()
116 		bus_dmamem_free(dma->tag, dma->ptr, dma->map);  in oce_dma_free()
117 		dma->ptr = NULL;  in oce_dma_free()
120 	bus_dma_tag_destroy(dma->tag);  in oce_dma_free()
121 	dma->tag = NULL;  in oce_dma_free()
141 		*paddr = segs->ds_addr;  in oce_dma_map_addr()
145  * @brief		Destroy a ring buffer
147  * @param ring		ring buffer
151 oce_destroy_ring_buffer(POCE_SOFTC sc, oce_ring_buffer_t *ring)  in oce_destroy_ring_buffer()  argument
153 	oce_dma_free(sc, &ring->dma);  in oce_destroy_ring_buffer()
154 	free(ring, M_DEVBUF);  in oce_destroy_ring_buffer()
163 	oce_ring_buffer_t *ring;  in oce_create_ring_buffer()  local
165 	ring = malloc(sizeof(oce_ring_buffer_t), M_DEVBUF, M_NOWAIT | M_ZERO);  in oce_create_ring_buffer()
166 	if (ring == NULL)   in oce_create_ring_buffer()
169 	ring->item_size = item_size;  in oce_create_ring_buffer()
170 	ring->num_items = q_len;  in oce_create_ring_buffer()
172 	rc = bus_dma_tag_create(bus_get_dma_tag(sc->dev),  in oce_create_ring_buffer()
177 				size, 8, 4096, 0, NULL, NULL, &ring->dma.tag);  in oce_create_ring_buffer()
181 	rc = bus_dmamem_alloc(ring->dma.tag,  in oce_create_ring_buffer()
182 				&ring->dma.ptr,  in oce_create_ring_buffer()
184 				&ring->dma.map);  in oce_create_ring_buffer()
188 	bzero(ring->dma.ptr, size);  in oce_create_ring_buffer()
189 	bus_dmamap_sync(ring->dma.tag, ring->dma.map,  in oce_create_ring_buffer()
191 	ring->dma.paddr = 0;  in oce_create_ring_buffer()
193 	return ring;  in oce_create_ring_buffer()
196 	oce_dma_free(sc, &ring->dma);  in oce_create_ring_buffer()
197 	free(ring, M_DEVBUF);  in oce_create_ring_buffer()
198 	ring = NULL;  in oce_create_ring_buffer()
209  * @brief		Map ring buffer
223 		if (nseg <= dpt->max_entries) {  in oce_dma_map_ring()
225 				dpt->paddrs[i].lo = ADDR_LO(segs[i].ds_addr);  in oce_dma_map_ring()
226 				dpt->paddrs[i].hi = ADDR_HI(segs[i].ds_addr);  in oce_dma_map_ring()
228 			dpt->num_entries = nseg;  in oce_dma_map_ring()
234  * @brief		Load bus dma map for a ring buffer
235  * @param ring		ring buffer pointer
240 oce_page_list(oce_ring_buffer_t *ring, struct phys_addr *pa_list)  in oce_page_list()  argument
248 	bus_dmamap_load(ring->dma.tag,  in oce_page_list()
249 			ring->dma.map,  in oce_page_list()
250 			ring->dma.ptr,  in oce_page_list()
251 			ring->item_size * ring->num_items,  in oce_page_list()