Lines Matching refs:rq
27 static int vnic_rq_alloc_bufs(struct vnic_rq *rq)
30 unsigned int i, j, count = rq->ring.desc_count;
34 rq->bufs[i] = kzalloc(VNIC_RQ_BUF_BLK_SZ, GFP_ATOMIC);
35 if (!rq->bufs[i]) {
42 buf = rq->bufs[i];
45 buf->desc = (u8 *)rq->ring.descs +
46 rq->ring.desc_size * buf->index;
48 buf->next = rq->bufs[0];
51 buf->next = rq->bufs[i + 1];
59 rq->to_use = rq->to_clean = rq->bufs[0];
60 rq->buf_index = 0;
65 void vnic_rq_free(struct vnic_rq *rq)
70 vdev = rq->vdev;
72 vnic_dev_free_desc_ring(vdev, &rq->ring);
75 kfree(rq->bufs[i]);
76 rq->bufs[i] = NULL;
79 rq->ctrl = NULL;
82 int vnic_rq_alloc(struct vnic_dev *vdev, struct vnic_rq *rq, unsigned int index,
87 rq->index = index;
88 rq->vdev = vdev;
90 rq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_RQ, index);
91 if (!rq->ctrl) {
96 vnic_rq_disable(rq);
98 err = vnic_dev_alloc_desc_ring(vdev, &rq->ring, desc_count, desc_size);
102 err = vnic_rq_alloc_bufs(rq);
104 vnic_rq_free(rq);
111 void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,
118 paddr = (u64)rq->ring.base_addr | VNIC_PADDR_TARGET;
119 writeq(paddr, &rq->ctrl->ring_base);
120 iowrite32(rq->ring.desc_count, &rq->ctrl->ring_size);
121 iowrite32(cq_index, &rq->ctrl->cq_index);
122 iowrite32(error_interrupt_enable, &rq->ctrl->error_interrupt_enable);
123 iowrite32(error_interrupt_offset, &rq->ctrl->error_interrupt_offset);
124 iowrite32(0, &rq->ctrl->dropped_packet_count);
125 iowrite32(0, &rq->ctrl->error_status);
128 fetch_index = ioread32(&rq->ctrl->fetch_index);
129 rq->to_use = rq->to_clean =
130 &rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES]
132 iowrite32(fetch_index, &rq->ctrl->posted_index);
134 rq->buf_index = 0;
137 unsigned int vnic_rq_error_status(struct vnic_rq *rq)
139 return ioread32(&rq->ctrl->error_status);
142 void vnic_rq_enable(struct vnic_rq *rq)
144 iowrite32(1, &rq->ctrl->enable);
147 int vnic_rq_disable(struct vnic_rq *rq)
151 iowrite32(0, &rq->ctrl->enable);
155 if (!(ioread32(&rq->ctrl->running)))
160 printk(KERN_ERR "Failed to disable RQ[%d]\n", rq->index);
165 void vnic_rq_clean(struct vnic_rq *rq,
166 void (*buf_clean)(struct vnic_rq *rq, struct vnic_rq_buf *buf))
171 WARN_ON(ioread32(&rq->ctrl->enable));
173 buf = rq->to_clean;
175 while (vnic_rq_desc_used(rq) > 0) {
177 (*buf_clean)(rq, buf);
179 buf = rq->to_clean = buf->next;
180 rq->ring.desc_avail++;
184 fetch_index = ioread32(&rq->ctrl->fetch_index);
185 rq->to_use = rq->to_clean =
186 &rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES]
188 iowrite32(fetch_index, &rq->ctrl->posted_index);
190 rq->buf_index = 0;
192 vnic_dev_clear_desc_ring(&rq->ring);