18  *      - Redistributions of source code must retain the above
22  *      - Redistributions in binary form must reproduce the above
65 	spin_lock_irqsave(&ctx->lock, flags);  in mlx4_cq_tasklet_cb()
66 	list_splice_tail_init(&ctx->list, &ctx->process_list);  in mlx4_cq_tasklet_cb()
67 	spin_unlock_irqrestore(&ctx->lock, flags);  in mlx4_cq_tasklet_cb()
69 	list_for_each_entry_safe(mcq, temp, &ctx->process_list, tasklet_ctx.list) {  in mlx4_cq_tasklet_cb()
70 		list_del_init(&mcq->tasklet_ctx.list);  in mlx4_cq_tasklet_cb()
71 		mcq->tasklet_ctx.comp(mcq);  in mlx4_cq_tasklet_cb()
72 		if (refcount_dec_and_test(&mcq->refcount))  in mlx4_cq_tasklet_cb()
73 			complete(&mcq->free);  in mlx4_cq_tasklet_cb()
78 	if (!list_empty(&ctx->process_list))  in mlx4_cq_tasklet_cb()
79 		tasklet_schedule(&ctx->task);  in mlx4_cq_tasklet_cb()
84 	struct mlx4_eq_tasklet *tasklet_ctx = cq->tasklet_ctx.priv;  in mlx4_add_cq_to_tasklet()
88 	spin_lock_irqsave(&tasklet_ctx->lock, flags);  in mlx4_add_cq_to_tasklet()
94 	if (list_empty_careful(&cq->tasklet_ctx.list)) {  in mlx4_add_cq_to_tasklet()
95 		refcount_inc(&cq->refcount);  in mlx4_add_cq_to_tasklet()
96 		kick = list_empty(&tasklet_ctx->list);  in mlx4_add_cq_to_tasklet()
97 		list_add_tail(&cq->tasklet_ctx.list, &tasklet_ctx->list);  in mlx4_add_cq_to_tasklet()
99 			tasklet_schedule(&tasklet_ctx->task);  in mlx4_add_cq_to_tasklet()
101 	spin_unlock_irqrestore(&tasklet_ctx->lock, flags);  in mlx4_add_cq_to_tasklet()
109 	cq = radix_tree_lookup(&mlx4_priv(dev)->cq_table.tree,  in mlx4_cq_completion()
110 			       cqn & (dev->caps.num_cqs - 1));  in mlx4_cq_completion()
121 	++cq->arm_sn;  in mlx4_cq_completion()
123 	cq->comp(cq);  in mlx4_cq_completion()
128 	struct mlx4_cq_table *cq_table = &mlx4_priv(dev)->cq_table;  in mlx4_cq_event()
132 	cq = radix_tree_lookup(&cq_table->tree, cqn & (dev->caps.num_cqs - 1));  in mlx4_cq_event()
143 	cq->event(cq, event_type);  in mlx4_cq_event()
146 static int mlx4_SW2HW_CQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,  in mlx4_SW2HW_CQ()  argument
149 	return mlx4_cmd(dev, mailbox->dma, cq_num, opmod,  in mlx4_SW2HW_CQ()
154 static int mlx4_MODIFY_CQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,  in mlx4_MODIFY_CQ()  argument
157 	return mlx4_cmd(dev, mailbox->dma, cq_num, opmod, MLX4_CMD_MODIFY_CQ,  in mlx4_MODIFY_CQ()
161 static int mlx4_HW2SW_CQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,  in mlx4_HW2SW_CQ()  argument
164 	return mlx4_cmd_box(dev, 0, mailbox ? mailbox->dma : 0,  in mlx4_HW2SW_CQ()
165 			    cq_num, mailbox ? 0 : 1, MLX4_CMD_HW2SW_CQ,  in mlx4_HW2SW_CQ()
172 	struct mlx4_cmd_mailbox *mailbox;  in mlx4_cq_modify()  local
176 	mailbox = mlx4_alloc_cmd_mailbox(dev);  in mlx4_cq_modify()
177 	if (IS_ERR(mailbox))  in mlx4_cq_modify()
178 		return PTR_ERR(mailbox);  in mlx4_cq_modify()
180 	cq_context = mailbox->buf;  in mlx4_cq_modify()
181 	cq_context->cq_max_count = cpu_to_be16(count);  in mlx4_cq_modify()
182 	cq_context->cq_period    = cpu_to_be16(period);  in mlx4_cq_modify()
184 	err = mlx4_MODIFY_CQ(dev, mailbox, cq->cqn, 1);  in mlx4_cq_modify()
186 	mlx4_free_cmd_mailbox(dev, mailbox);  in mlx4_cq_modify()
194 	struct mlx4_cmd_mailbox *mailbox;  in mlx4_cq_resize()  local
199 	mailbox = mlx4_alloc_cmd_mailbox(dev);  in mlx4_cq_resize()
200 	if (IS_ERR(mailbox))  in mlx4_cq_resize()
201 		return PTR_ERR(mailbox);  in mlx4_cq_resize()
203 	cq_context = mailbox->buf;  in mlx4_cq_resize()
204 	cq_context->logsize_usrpage = cpu_to_be32(ilog2(entries) << 24);  in mlx4_cq_resize()
205 	cq_context->log_page_size   = mtt->page_shift - 12;  in mlx4_cq_resize()
207 	cq_context->mtt_base_addr_h = mtt_addr >> 32;  in mlx4_cq_resize()
208 	cq_context->mtt_base_addr_l = cpu_to_be32(mtt_addr & 0xffffffff);  in mlx4_cq_resize()
210 	err = mlx4_MODIFY_CQ(dev, mailbox, cq->cqn, 0);  in mlx4_cq_resize()
212 	mlx4_free_cmd_mailbox(dev, mailbox);  in mlx4_cq_resize()
220 	struct mlx4_cq_table *cq_table = &priv->cq_table;  in __mlx4_cq_alloc_icm()
223 	*cqn = mlx4_bitmap_alloc(&cq_table->bitmap);  in __mlx4_cq_alloc_icm()
224 	if (*cqn == -1)  in __mlx4_cq_alloc_icm()
225 		return -ENOMEM;  in __mlx4_cq_alloc_icm()
227 	err = mlx4_table_get(dev, &cq_table->table, *cqn);  in __mlx4_cq_alloc_icm()
231 	err = mlx4_table_get(dev, &cq_table->cmpt_table, *cqn);  in __mlx4_cq_alloc_icm()
237 	mlx4_table_put(dev, &cq_table->table, *cqn);  in __mlx4_cq_alloc_icm()
240 	mlx4_bitmap_free(&cq_table->bitmap, *cqn, MLX4_NO_RR);  in __mlx4_cq_alloc_icm()
267 	struct mlx4_cq_table *cq_table = &priv->cq_table;  in __mlx4_cq_free_icm()
269 	mlx4_table_put(dev, &cq_table->cmpt_table, cqn);  in __mlx4_cq_free_icm()
270 	mlx4_table_put(dev, &cq_table->table, cqn);  in __mlx4_cq_free_icm()
271 	mlx4_bitmap_free(&cq_table->bitmap, cqn, MLX4_NO_RR);  in __mlx4_cq_free_icm()
299 		return -ENOMEM;  in mlx4_init_user_cqes()
310 				-EFAULT : 0;  in mlx4_init_user_cqes()
319 			-EFAULT : 0;  in mlx4_init_user_cqes()
334 	if (buf->nbufs == 1)  in mlx4_init_kernel_cqes()
335 		memset(buf->direct.buf, 0xcc, entries * cqe_size);  in mlx4_init_kernel_cqes()
337 		for (i = 0; i < buf->npages; i++)  in mlx4_init_kernel_cqes()
338 			memset(buf->page_list[i].buf, 0xcc,  in mlx4_init_kernel_cqes()
339 			       1UL << buf->page_shift);  in mlx4_init_kernel_cqes()
347 	bool sw_cq_init = dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SW_CQ_INIT;  in mlx4_cq_alloc()
349 	struct mlx4_cq_table *cq_table = &priv->cq_table;  in mlx4_cq_alloc()
350 	struct mlx4_cmd_mailbox *mailbox;  in mlx4_cq_alloc()  local
355 	if (vector >= dev->caps.num_comp_vectors)  in mlx4_cq_alloc()
356 		return -EINVAL;  in mlx4_cq_alloc()
358 	cq->vector = vector;  in mlx4_cq_alloc()
360 	err = mlx4_cq_alloc_icm(dev, &cq->cqn, cq->usage);  in mlx4_cq_alloc()
364 	spin_lock(&cq_table->lock);  in mlx4_cq_alloc()
365 	err = radix_tree_insert(&cq_table->tree, cq->cqn, cq);  in mlx4_cq_alloc()
366 	spin_unlock(&cq_table->lock);  in mlx4_cq_alloc()
370 	mailbox = mlx4_alloc_cmd_mailbox(dev);  in mlx4_cq_alloc()
371 	if (IS_ERR(mailbox)) {  in mlx4_cq_alloc()
372 		err = PTR_ERR(mailbox);  in mlx4_cq_alloc()
376 	cq_context = mailbox->buf;  in mlx4_cq_alloc()
377 	cq_context->flags	    = cpu_to_be32(!!collapsed << 18);  in mlx4_cq_alloc()
379 		cq_context->flags  |= cpu_to_be32(1 << 19);  in mlx4_cq_alloc()
381 	cq_context->logsize_usrpage =  in mlx4_cq_alloc()
383 			    mlx4_to_hw_uar_index(dev, uar->index));  in mlx4_cq_alloc()
384 	cq_context->comp_eqn	    = priv->eq_table.eq[MLX4_CQ_TO_EQ_VECTOR(vector)].eqn;  in mlx4_cq_alloc()
385 	cq_context->log_page_size   = mtt->page_shift - MLX4_ICM_PAGE_SHIFT;  in mlx4_cq_alloc()
388 	cq_context->mtt_base_addr_h = mtt_addr >> 32;  in mlx4_cq_alloc()
389 	cq_context->mtt_base_addr_l = cpu_to_be32(mtt_addr & 0xffffffff);  in mlx4_cq_alloc()
390 	cq_context->db_rec_addr     = cpu_to_be64(db_rec);  in mlx4_cq_alloc()
395 						  dev->caps.cqe_size);  in mlx4_cq_alloc()
400 					      dev->caps.cqe_size);  in mlx4_cq_alloc()
404 	err = mlx4_SW2HW_CQ(dev, mailbox, cq->cqn, sw_cq_init);  in mlx4_cq_alloc()
406 	mlx4_free_cmd_mailbox(dev, mailbox);  in mlx4_cq_alloc()
410 	cq->cons_index = 0;  in mlx4_cq_alloc()
411 	cq->arm_sn     = 1;  in mlx4_cq_alloc()
412 	cq->uar        = uar;  in mlx4_cq_alloc()
413 	refcount_set(&cq->refcount, 1);  in mlx4_cq_alloc()
414 	init_completion(&cq->free);  in mlx4_cq_alloc()
415 	cq->comp = mlx4_add_cq_to_tasklet;  in mlx4_cq_alloc()
416 	cq->tasklet_ctx.priv =  in mlx4_cq_alloc()
417 		&priv->eq_table.eq[MLX4_CQ_TO_EQ_VECTOR(vector)].tasklet_ctx;  in mlx4_cq_alloc()
418 	INIT_LIST_HEAD(&cq->tasklet_ctx.list);  in mlx4_cq_alloc()
421 	cq->irq = priv->eq_table.eq[MLX4_CQ_TO_EQ_VECTOR(vector)].irq;  in mlx4_cq_alloc()
425 	spin_lock(&cq_table->lock);  in mlx4_cq_alloc()
426 	radix_tree_delete(&cq_table->tree, cq->cqn);  in mlx4_cq_alloc()
427 	spin_unlock(&cq_table->lock);  in mlx4_cq_alloc()
430 	mlx4_cq_free_icm(dev, cq->cqn);  in mlx4_cq_alloc()
439 	struct mlx4_cq_table *cq_table = &priv->cq_table;  in mlx4_cq_free()
442 	err = mlx4_HW2SW_CQ(dev, NULL, cq->cqn);  in mlx4_cq_free()
444 		mlx4_warn(dev, "HW2SW_CQ failed (%d) for CQN %06x\n", err, cq->cqn);  in mlx4_cq_free()
446 	spin_lock(&cq_table->lock);  in mlx4_cq_free()
447 	radix_tree_delete(&cq_table->tree, cq->cqn);  in mlx4_cq_free()
448 	spin_unlock(&cq_table->lock);  in mlx4_cq_free()
450 	synchronize_irq(priv->eq_table.eq[MLX4_CQ_TO_EQ_VECTOR(cq->vector)].irq);  in mlx4_cq_free()
451 	if (priv->eq_table.eq[MLX4_CQ_TO_EQ_VECTOR(cq->vector)].irq !=  in mlx4_cq_free()
452 	    priv->eq_table.eq[MLX4_EQ_ASYNC].irq)  in mlx4_cq_free()
453 		synchronize_irq(priv->eq_table.eq[MLX4_EQ_ASYNC].irq);  in mlx4_cq_free()
455 	if (refcount_dec_and_test(&cq->refcount))  in mlx4_cq_free()
456 		complete(&cq->free);  in mlx4_cq_free()
457 	wait_for_completion(&cq->free);  in mlx4_cq_free()
459 	mlx4_cq_free_icm(dev, cq->cqn);  in mlx4_cq_free()
465 	struct mlx4_cq_table *cq_table = &mlx4_priv(dev)->cq_table;  in mlx4_init_cq_table()
467 	spin_lock_init(&cq_table->lock);  in mlx4_init_cq_table()
468 	INIT_RADIX_TREE(&cq_table->tree, GFP_ATOMIC);  in mlx4_init_cq_table()
472 	return mlx4_bitmap_init(&cq_table->bitmap, dev->caps.num_cqs,  in mlx4_init_cq_table()
473 				dev->caps.num_cqs - 1, dev->caps.reserved_cqs, 0);  in mlx4_init_cq_table()
481 	mlx4_bitmap_cleanup(&mlx4_priv(dev)->cq_table.bitmap);  in mlx4_cleanup_cq_table()