Lines Matching refs:rq
15 static int vnic_rq_alloc_bufs(struct vnic_rq *rq)
18 unsigned int i, j, count = rq->ring.desc_count;
22 rq->bufs[i] = kzalloc(VNIC_RQ_BUF_BLK_SZ, GFP_ATOMIC);
23 if (!rq->bufs[i]) {
30 buf = rq->bufs[i];
33 buf->desc = (u8 *)rq->ring.descs +
34 rq->ring.desc_size * buf->index;
36 buf->next = rq->bufs[0];
39 buf->next = rq->bufs[i + 1];
47 rq->to_use = rq->to_clean = rq->bufs[0];
48 rq->buf_index = 0;
53 void vnic_rq_free(struct vnic_rq *rq)
58 vdev = rq->vdev;
60 vnic_dev_free_desc_ring(vdev, &rq->ring);
63 kfree(rq->bufs[i]);
64 rq->bufs[i] = NULL;
67 rq->ctrl = NULL;
70 int vnic_rq_alloc(struct vnic_dev *vdev, struct vnic_rq *rq, unsigned int index,
75 rq->index = index;
76 rq->vdev = vdev;
78 rq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_RQ, index);
79 if (!rq->ctrl) {
84 vnic_rq_disable(rq);
86 err = vnic_dev_alloc_desc_ring(vdev, &rq->ring, desc_count, desc_size);
90 err = vnic_rq_alloc_bufs(rq);
92 vnic_rq_free(rq);
99 void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,
106 paddr = (u64)rq->ring.base_addr | VNIC_PADDR_TARGET;
107 writeq(paddr, &rq->ctrl->ring_base);
108 iowrite32(rq->ring.desc_count, &rq->ctrl->ring_size);
109 iowrite32(cq_index, &rq->ctrl->cq_index);
110 iowrite32(error_interrupt_enable, &rq->ctrl->error_interrupt_enable);
111 iowrite32(error_interrupt_offset, &rq->ctrl->error_interrupt_offset);
112 iowrite32(0, &rq->ctrl->dropped_packet_count);
113 iowrite32(0, &rq->ctrl->error_status);
116 fetch_index = ioread32(&rq->ctrl->fetch_index);
117 rq->to_use = rq->to_clean =
118 &rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES]
120 iowrite32(fetch_index, &rq->ctrl->posted_index);
122 rq->buf_index = 0;
125 unsigned int vnic_rq_error_status(struct vnic_rq *rq)
127 return ioread32(&rq->ctrl->error_status);
130 void vnic_rq_enable(struct vnic_rq *rq)
132 iowrite32(1, &rq->ctrl->enable);
135 int vnic_rq_disable(struct vnic_rq *rq)
139 iowrite32(0, &rq->ctrl->enable);
143 if (!(ioread32(&rq->ctrl->running)))
148 printk(KERN_ERR "Failed to disable RQ[%d]\n", rq->index);
153 void vnic_rq_clean(struct vnic_rq *rq,
154 void (*buf_clean)(struct vnic_rq *rq, struct vnic_rq_buf *buf))
159 WARN_ON(ioread32(&rq->ctrl->enable));
161 buf = rq->to_clean;
163 while (vnic_rq_desc_used(rq) > 0) {
165 (*buf_clean)(rq, buf);
167 buf = rq->to_clean = buf->next;
168 rq->ring.desc_avail++;
172 fetch_index = ioread32(&rq->ctrl->fetch_index);
173 rq->to_use = rq->to_clean =
174 &rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES]
176 iowrite32(fetch_index, &rq->ctrl->posted_index);
178 rq->buf_index = 0;
180 vnic_dev_clear_desc_ring(&rq->ring);