Cross Reference: /drivers/scsi/fnic/vnic

Lines Matching refs:rq
27 static int vnic_rq_alloc_bufs(struct vnic_rq *rq)
31 	unsigned int i, j, count = rq->ring.desc_count;
34 	vdev = rq->vdev;
37 		rq->bufs[i] = kzalloc(VNIC_RQ_BUF_BLK_SZ, GFP_ATOMIC);
38 		if (!rq->bufs[i]) {
45 		buf = rq->bufs[i];
48 			buf->desc = (u8 *)rq->ring.descs +
49 				rq->ring.desc_size * buf->index;
51 				buf->next = rq->bufs[0];
54 				buf->next = rq->bufs[i + 1];
62 	rq->to_use = rq->to_clean = rq->bufs[0];
63 	rq->buf_index = 0;
68 void vnic_rq_free(struct vnic_rq *rq)
73 	vdev = rq->vdev;
75 	vnic_dev_free_desc_ring(vdev, &rq->ring);
78 		kfree(rq->bufs[i]);
79 		rq->bufs[i] = NULL;
82 	rq->ctrl = NULL;
85 int vnic_rq_alloc(struct vnic_dev *vdev, struct vnic_rq *rq, unsigned int index,
90 	rq->index = index;
91 	rq->vdev = vdev;
93 	rq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_RQ, index);
94 	if (!rq->ctrl) {
99 	vnic_rq_disable(rq);
101 	err = vnic_dev_alloc_desc_ring(vdev, &rq->ring, desc_count, desc_size);
105 	err = vnic_rq_alloc_bufs(rq);
107 		vnic_rq_free(rq);
114 void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,
121 	paddr = (u64)rq->ring.base_addr | VNIC_PADDR_TARGET;
122 	writeq(paddr, &rq->ctrl->ring_base);
123 	iowrite32(rq->ring.desc_count, &rq->ctrl->ring_size);
124 	iowrite32(cq_index, &rq->ctrl->cq_index);
125 	iowrite32(error_interrupt_enable, &rq->ctrl->error_interrupt_enable);
126 	iowrite32(error_interrupt_offset, &rq->ctrl->error_interrupt_offset);
127 	iowrite32(0, &rq->ctrl->dropped_packet_count);
128 	iowrite32(0, &rq->ctrl->error_status);
131 	fetch_index = ioread32(&rq->ctrl->fetch_index);
132 	rq->to_use = rq->to_clean =
133 		&rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES]
135 	iowrite32(fetch_index, &rq->ctrl->posted_index);
137 	rq->buf_index = 0;
140 unsigned int vnic_rq_error_status(struct vnic_rq *rq)
142 	return ioread32(&rq->ctrl->error_status);
145 void vnic_rq_enable(struct vnic_rq *rq)
147 	iowrite32(1, &rq->ctrl->enable);
150 int vnic_rq_disable(struct vnic_rq *rq)
154 	iowrite32(0, &rq->ctrl->enable);
158 		if (!(ioread32(&rq->ctrl->running)))
163 	printk(KERN_ERR "Failed to disable RQ[%d]\n", rq->index);
168 void vnic_rq_clean(struct vnic_rq *rq,
169 	void (*buf_clean)(struct vnic_rq *rq, struct vnic_rq_buf *buf))
174 	BUG_ON(ioread32(&rq->ctrl->enable));
176 	buf = rq->to_clean;
178 	while (vnic_rq_desc_used(rq) > 0) {
180 		(*buf_clean)(rq, buf);
182 		buf = rq->to_clean = buf->next;
183 		rq->ring.desc_avail++;
187 	fetch_index = ioread32(&rq->ctrl->fetch_index);
188 	rq->to_use = rq->to_clean =
189 		&rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES]
191 	iowrite32(fetch_index, &rq->ctrl->posted_index);
193 	rq->buf_index = 0;
195 	vnic_dev_clear_desc_ring(&rq->ring);