27 static int vnic_wq_alloc_bufs(struct vnic_wq *wq)  in vnic_wq_alloc_bufs()  argument
31 	unsigned int i, j, count = wq->ring.desc_count;  in vnic_wq_alloc_bufs()
34 	vdev = wq->vdev;  in vnic_wq_alloc_bufs()
37 		wq->bufs[i] = kzalloc(VNIC_WQ_BUF_BLK_SZ, GFP_ATOMIC);  in vnic_wq_alloc_bufs()
38 		if (!wq->bufs[i]) {  in vnic_wq_alloc_bufs()
45 		buf = wq->bufs[i];  in vnic_wq_alloc_bufs()
48 			buf->desc = (u8 *)wq->ring.descs +  in vnic_wq_alloc_bufs()
49 				wq->ring.desc_size * buf->index;  in vnic_wq_alloc_bufs()
51 				buf->next = wq->bufs[0];  in vnic_wq_alloc_bufs()
54 				buf->next = wq->bufs[i + 1];  in vnic_wq_alloc_bufs()
62 	wq->to_use = wq->to_clean = wq->bufs[0];  in vnic_wq_alloc_bufs()
67 void vnic_wq_free(struct vnic_wq *wq)  in vnic_wq_free()  argument
72 	vdev = wq->vdev;  in vnic_wq_free()
74 	vnic_dev_free_desc_ring(vdev, &wq->ring);  in vnic_wq_free()
77 		kfree(wq->bufs[i]);  in vnic_wq_free()
78 		wq->bufs[i] = NULL;  in vnic_wq_free()
81 	wq->ctrl = NULL;  in vnic_wq_free()
85 int vnic_wq_alloc(struct vnic_dev *vdev, struct vnic_wq *wq, unsigned int index,  in vnic_wq_alloc()  argument
90 	wq->index = index;  in vnic_wq_alloc()
91 	wq->vdev = vdev;  in vnic_wq_alloc()
93 	wq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_WQ, index);  in vnic_wq_alloc()
94 	if (!wq->ctrl) {  in vnic_wq_alloc()
99 	vnic_wq_disable(wq);  in vnic_wq_alloc()
101 	err = vnic_dev_alloc_desc_ring(vdev, &wq->ring, desc_count, desc_size);  in vnic_wq_alloc()
105 	err = vnic_wq_alloc_bufs(wq);  in vnic_wq_alloc()
107 		vnic_wq_free(wq);  in vnic_wq_alloc()
114 void vnic_wq_init(struct vnic_wq *wq, unsigned int cq_index,  in vnic_wq_init()  argument
120 	paddr = (u64)wq->ring.base_addr | VNIC_PADDR_TARGET;  in vnic_wq_init()
121 	writeq(paddr, &wq->ctrl->ring_base);  in vnic_wq_init()
122 	iowrite32(wq->ring.desc_count, &wq->ctrl->ring_size);  in vnic_wq_init()
123 	iowrite32(0, &wq->ctrl->fetch_index);  in vnic_wq_init()
124 	iowrite32(0, &wq->ctrl->posted_index);  in vnic_wq_init()
125 	iowrite32(cq_index, &wq->ctrl->cq_index);  in vnic_wq_init()
126 	iowrite32(error_interrupt_enable, &wq->ctrl->error_interrupt_enable);  in vnic_wq_init()
127 	iowrite32(error_interrupt_offset, &wq->ctrl->error_interrupt_offset);  in vnic_wq_init()
128 	iowrite32(0, &wq->ctrl->error_status);  in vnic_wq_init()
131 unsigned int vnic_wq_error_status(struct vnic_wq *wq)  in vnic_wq_error_status()  argument
133 	return ioread32(&wq->ctrl->error_status);  in vnic_wq_error_status()
136 void vnic_wq_enable(struct vnic_wq *wq)  in vnic_wq_enable()  argument
138 	iowrite32(1, &wq->ctrl->enable);  in vnic_wq_enable()
141 int vnic_wq_disable(struct vnic_wq *wq)  in vnic_wq_disable()  argument
145 	iowrite32(0, &wq->ctrl->enable);  in vnic_wq_disable()
149 		if (!(ioread32(&wq->ctrl->running)))  in vnic_wq_disable()
154 	printk(KERN_ERR "Failed to disable WQ[%d]\n", wq->index);  in vnic_wq_disable()
159 void vnic_wq_clean(struct vnic_wq *wq,  in vnic_wq_clean()  argument
160 	void (*buf_clean)(struct vnic_wq *wq, struct vnic_wq_buf *buf))  in vnic_wq_clean()  argument
164 	BUG_ON(ioread32(&wq->ctrl->enable));  in vnic_wq_clean()
166 	buf = wq->to_clean;  in vnic_wq_clean()
168 	while (vnic_wq_desc_used(wq) > 0) {  in vnic_wq_clean()
170 		(*buf_clean)(wq, buf);  in vnic_wq_clean()
172 		buf = wq->to_clean = buf->next;  in vnic_wq_clean()
173 		wq->ring.desc_avail++;  in vnic_wq_clean()
176 	wq->to_use = wq->to_clean = wq->bufs[0];  in vnic_wq_clean()
178 	iowrite32(0, &wq->ctrl->fetch_index);  in vnic_wq_clean()
179 	iowrite32(0, &wq->ctrl->posted_index);  in vnic_wq_clean()
180 	iowrite32(0, &wq->ctrl->error_status);  in vnic_wq_clean()
182 	vnic_dev_clear_desc_ring(&wq->ring);  in vnic_wq_clean()