Lines Matching refs:wq
28 static int vnic_wq_get_ctrl(struct vnic_dev *vdev, struct vnic_wq *wq,
31 wq->ctrl = vnic_dev_get_res(vdev, res_type, index);
33 if (!wq->ctrl)
40 static int vnic_wq_alloc_ring(struct vnic_dev *vdev, struct vnic_wq *wq,
43 return vnic_dev_alloc_desc_ring(vdev, &wq->ring, desc_count, desc_size);
47 static int vnic_wq_alloc_bufs(struct vnic_wq *wq)
50 unsigned int i, j, count = wq->ring.desc_count;
54 wq->bufs[i] = kzalloc(VNIC_WQ_BUF_BLK_SZ, GFP_ATOMIC);
55 if (!wq->bufs[i]) {
62 buf = wq->bufs[i];
65 buf->desc = (u8 *)wq->ring.descs +
66 wq->ring.desc_size * buf->index;
68 buf->next = wq->bufs[0];
71 buf->next = wq->bufs[i + 1];
79 wq->to_use = wq->to_clean = wq->bufs[0];
84 void vnic_wq_free(struct vnic_wq *wq)
89 vdev = wq->vdev;
91 vnic_dev_free_desc_ring(vdev, &wq->ring);
94 kfree(wq->bufs[i]);
95 wq->bufs[i] = NULL;
98 wq->ctrl = NULL;
102 int vnic_wq_alloc(struct vnic_dev *vdev, struct vnic_wq *wq, unsigned int index,
107 wq->index = index;
108 wq->vdev = vdev;
110 wq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_WQ, index);
111 if (!wq->ctrl) {
116 vnic_wq_disable(wq);
118 err = vnic_dev_alloc_desc_ring(vdev, &wq->ring, desc_count, desc_size);
122 err = vnic_wq_alloc_bufs(wq);
124 vnic_wq_free(wq);
132 int vnic_wq_devcmd2_alloc(struct vnic_dev *vdev, struct vnic_wq *wq,
137 wq->index = 0;
138 wq->vdev = vdev;
140 err = vnic_wq_get_ctrl(vdev, wq, 0, RES_TYPE_DEVCMD2);
145 vnic_wq_disable(wq);
147 err = vnic_wq_alloc_ring(vdev, wq, desc_count, desc_size);
153 void vnic_wq_init_start(struct vnic_wq *wq, unsigned int cq_index,
159 unsigned int count = wq->ring.desc_count;
161 paddr = (u64)wq->ring.base_addr | VNIC_PADDR_TARGET;
162 writeq(paddr, &wq->ctrl->ring_base);
163 iowrite32(count, &wq->ctrl->ring_size);
164 iowrite32(fetch_index, &wq->ctrl->fetch_index);
165 iowrite32(posted_index, &wq->ctrl->posted_index);
166 iowrite32(cq_index, &wq->ctrl->cq_index);
167 iowrite32(error_interrupt_enable, &wq->ctrl->error_interrupt_enable);
168 iowrite32(error_interrupt_offset, &wq->ctrl->error_interrupt_offset);
169 iowrite32(0, &wq->ctrl->error_status);
171 wq->to_use = wq->to_clean =
172 &wq->bufs[fetch_index / VNIC_WQ_BUF_BLK_ENTRIES]
177 void vnic_wq_init(struct vnic_wq *wq, unsigned int cq_index,
183 paddr = (u64)wq->ring.base_addr | VNIC_PADDR_TARGET;
184 writeq(paddr, &wq->ctrl->ring_base);
185 iowrite32(wq->ring.desc_count, &wq->ctrl->ring_size);
186 iowrite32(0, &wq->ctrl->fetch_index);
187 iowrite32(0, &wq->ctrl->posted_index);
188 iowrite32(cq_index, &wq->ctrl->cq_index);
189 iowrite32(error_interrupt_enable, &wq->ctrl->error_interrupt_enable);
190 iowrite32(error_interrupt_offset, &wq->ctrl->error_interrupt_offset);
191 iowrite32(0, &wq->ctrl->error_status);
194 unsigned int vnic_wq_error_status(struct vnic_wq *wq)
196 return ioread32(&wq->ctrl->error_status);
199 void vnic_wq_enable(struct vnic_wq *wq)
201 iowrite32(1, &wq->ctrl->enable);
204 int vnic_wq_disable(struct vnic_wq *wq)
208 iowrite32(0, &wq->ctrl->enable);
212 if (!(ioread32(&wq->ctrl->running)))
217 printk(KERN_ERR "Failed to disable WQ[%d]\n", wq->index);
222 void vnic_wq_clean(struct vnic_wq *wq,
223 void (*buf_clean)(struct vnic_wq *wq, struct vnic_wq_buf *buf))
227 BUG_ON(ioread32(&wq->ctrl->enable));
229 buf = wq->to_clean;
231 while (vnic_wq_desc_used(wq) > 0) {
233 (*buf_clean)(wq, buf);
235 buf = wq->to_clean = buf->next;
236 wq->ring.desc_avail++;
239 wq->to_use = wq->to_clean = wq->bufs[0];
241 iowrite32(0, &wq->ctrl->fetch_index);
242 iowrite32(0, &wq->ctrl->posted_index);
243 iowrite32(0, &wq->ctrl->error_status);
245 vnic_dev_clear_desc_ring(&wq->ring);