1 /* SPDX-License-Identifier: GPL-2.0-only */
14 #include <linux/dma-mapping.h>
63 	/* From CTRL-A settings, then set to what is appropriate */
95 	u32    max_scbs;	  /* absolute sequencer scb queue size */
116 	struct scb *scb;	  /* equals dma_scb->vaddr */
123 	/* internally generated command */
129 	/* If this is an Empty SCB, index of first edb in seq->edb_arr. */
157 	struct asd_dma_tok *actual_dl; /* actual_dl->vaddr */
201 	struct asd_seq_data  seq; /* sequencer related */
206 /* ---------- Common macros ---------- */
227 #define PHY_ENABLED(_HA, _I) ((_HA)->hw_prof.enabled_phys & (1<<(_I)))
229 /* ---------- DMA allocs ---------- */
247 		token->size = size;  in asd_alloc_coherent()
248 		token->vaddr = dma_alloc_coherent(&asd_ha->pcidev->dev,  in asd_alloc_coherent()
249 						  token->size,  in asd_alloc_coherent()
250 						  &token->dma_handle,  in asd_alloc_coherent()
252 		if (!token->vaddr) {  in asd_alloc_coherent()
264 		dma_free_coherent(&asd_ha->pcidev->dev, token->size,  in asd_free_coherent()
265 				  token->vaddr, token->dma_handle);  in asd_free_coherent()
273 	INIT_LIST_HEAD(&ascb->list);  in asd_init_ascb()
274 	ascb->scb = ascb->dma_scb.vaddr;  in asd_init_ascb()
275 	ascb->ha = asd_ha;  in asd_init_ascb()
276 	timer_setup(&ascb->timer, NULL, 0);  in asd_init_ascb()
277 	ascb->tc_index = -1;  in asd_init_ascb()
284 	seq->tc_index_array[index] = NULL;  in asd_tc_index_release()
285 	clear_bit(index, seq->tc_index_bitmap);  in asd_tc_index_release()
294 	index = find_first_zero_bit(seq->tc_index_bitmap,  in asd_tc_index_get()
295 				    seq->tc_index_bitmap_bits);  in asd_tc_index_get()
296 	if (index == seq->tc_index_bitmap_bits)  in asd_tc_index_get()
297 		return -1;  in asd_tc_index_get()
299 	seq->tc_index_array[index] = ptr;  in asd_tc_index_get()
300 	set_bit(index, seq->tc_index_bitmap);  in asd_tc_index_get()
309 	return seq->tc_index_array[index];  in asd_tc_index_find()
313  * asd_ascb_free -- free a single aSCB after is has completed
317  * the sequencer.
322 		struct asd_ha_struct *asd_ha = ascb->ha;  in asd_ascb_free()
325 		BUG_ON(!list_empty(&ascb->list));  in asd_ascb_free()
326 		spin_lock_irqsave(&ascb->ha->seq.tc_index_lock, flags);  in asd_ascb_free()
327 		asd_tc_index_release(&ascb->ha->seq, ascb->tc_index);  in asd_ascb_free()
328 		spin_unlock_irqrestore(&ascb->ha->seq.tc_index_lock, flags);  in asd_ascb_free()
329 		dma_pool_free(asd_ha->scb_pool, ascb->dma_scb.vaddr,  in asd_ascb_free()
330 			      ascb->dma_scb.dma_handle);  in asd_ascb_free()
336  * asd_ascb_list_free -- free a list of ascbs
348 	__list_add(&list, ascb_list->list.prev, &ascb_list->list);  in asd_ascb_free_list()
355 /* ---------- Function declarations ---------- */