Lines Matching refs:wq
30 static int vnic_wq_alloc_bufs(struct vnic_wq *wq)
34 unsigned int i, j, count = wq->ring.desc_count;
37 vdev = wq->vdev;
40 wq->bufs[i] = kzalloc(VNIC_WQ_BUF_BLK_SZ(count), GFP_ATOMIC);
41 if (!wq->bufs[i]) {
48 buf = wq->bufs[i];
51 buf->desc = (u8 *)wq->ring.descs +
52 wq->ring.desc_size * buf->index;
54 buf->next = wq->bufs[0];
57 buf->next = wq->bufs[i + 1];
65 wq->to_use = wq->to_clean = wq->bufs[0];
70 void vnic_wq_free(struct vnic_wq *wq)
75 vdev = wq->vdev;
77 vnic_dev_free_desc_ring(vdev, &wq->ring);
80 kfree(wq->bufs[i]);
81 wq->bufs[i] = NULL;
84 wq->ctrl = NULL;
87 int vnic_wq_alloc(struct vnic_dev *vdev, struct vnic_wq *wq, unsigned int index,
92 wq->index = index;
93 wq->vdev = vdev;
95 wq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_WQ, index);
96 if (!wq->ctrl) {
101 vnic_wq_disable(wq);
103 err = vnic_dev_alloc_desc_ring(vdev, &wq->ring, desc_count, desc_size);
107 err = vnic_wq_alloc_bufs(wq);
109 vnic_wq_free(wq);
116 void vnic_wq_init_start(struct vnic_wq *wq, unsigned int cq_index,
122 unsigned int count = wq->ring.desc_count;
124 paddr = (u64)wq->ring.base_addr | VNIC_PADDR_TARGET;
125 writeq(paddr, &wq->ctrl->ring_base);
126 iowrite32(count, &wq->ctrl->ring_size);
127 iowrite32(fetch_index, &wq->ctrl->fetch_index);
128 iowrite32(posted_index, &wq->ctrl->posted_index);
129 iowrite32(cq_index, &wq->ctrl->cq_index);
130 iowrite32(error_interrupt_enable, &wq->ctrl->error_interrupt_enable);
131 iowrite32(error_interrupt_offset, &wq->ctrl->error_interrupt_offset);
132 iowrite32(0, &wq->ctrl->error_status);
134 wq->to_use = wq->to_clean =
135 &wq->bufs[fetch_index / VNIC_WQ_BUF_BLK_ENTRIES(count)]
139 void vnic_wq_init(struct vnic_wq *wq, unsigned int cq_index,
143 vnic_wq_init_start(wq, cq_index, 0, 0,
148 unsigned int vnic_wq_error_status(struct vnic_wq *wq)
150 return ioread32(&wq->ctrl->error_status);
153 void vnic_wq_enable(struct vnic_wq *wq)
155 iowrite32(1, &wq->ctrl->enable);
158 int vnic_wq_disable(struct vnic_wq *wq)
162 iowrite32(0, &wq->ctrl->enable);
166 if (!(ioread32(&wq->ctrl->running)))
171 pr_err("Failed to disable WQ[%d]\n", wq->index);
176 void vnic_wq_clean(struct vnic_wq *wq,
177 void (*buf_clean)(struct vnic_wq *wq, struct vnic_wq_buf *buf))
181 buf = wq->to_clean;
183 while (vnic_wq_desc_used(wq) > 0) {
185 (*buf_clean)(wq, buf);
187 buf = wq->to_clean = buf->next;
188 wq->ring.desc_avail++;
191 wq->to_use = wq->to_clean = wq->bufs[0];
193 iowrite32(0, &wq->ctrl->fetch_index);
194 iowrite32(0, &wq->ctrl->posted_index);
195 iowrite32(0, &wq->ctrl->error_status);
197 vnic_dev_clear_desc_ring(&wq->ring);