27 static int vnic_rq_alloc_bufs(struct vnic_rq *rq)  in vnic_rq_alloc_bufs()  argument
31 	unsigned int i, j, count = rq->ring.desc_count;  in vnic_rq_alloc_bufs()
34 	vdev = rq->vdev;  in vnic_rq_alloc_bufs()
37 		rq->bufs[i] = kzalloc(VNIC_RQ_BUF_BLK_SZ, GFP_ATOMIC);  in vnic_rq_alloc_bufs()
38 		if (!rq->bufs[i]) {  in vnic_rq_alloc_bufs()
45 		buf = rq->bufs[i];  in vnic_rq_alloc_bufs()
48 			buf->desc = (u8 *)rq->ring.descs +  in vnic_rq_alloc_bufs()
49 				rq->ring.desc_size * buf->index;  in vnic_rq_alloc_bufs()
51 				buf->next = rq->bufs[0];  in vnic_rq_alloc_bufs()
54 				buf->next = rq->bufs[i + 1];  in vnic_rq_alloc_bufs()
62 	rq->to_use = rq->to_clean = rq->bufs[0];  in vnic_rq_alloc_bufs()
63 	rq->buf_index = 0;  in vnic_rq_alloc_bufs()
68 void vnic_rq_free(struct vnic_rq *rq)  in vnic_rq_free()  argument
73 	vdev = rq->vdev;  in vnic_rq_free()
75 	vnic_dev_free_desc_ring(vdev, &rq->ring);  in vnic_rq_free()
78 		kfree(rq->bufs[i]);  in vnic_rq_free()
79 		rq->bufs[i] = NULL;  in vnic_rq_free()
82 	rq->ctrl = NULL;  in vnic_rq_free()
85 int vnic_rq_alloc(struct vnic_dev *vdev, struct vnic_rq *rq, unsigned int index,  in vnic_rq_alloc()  argument
90 	rq->index = index;  in vnic_rq_alloc()
91 	rq->vdev = vdev;  in vnic_rq_alloc()
93 	rq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_RQ, index);  in vnic_rq_alloc()
94 	if (!rq->ctrl) {  in vnic_rq_alloc()
99 	vnic_rq_disable(rq);  in vnic_rq_alloc()
101 	err = vnic_dev_alloc_desc_ring(vdev, &rq->ring, desc_count, desc_size);  in vnic_rq_alloc()
105 	err = vnic_rq_alloc_bufs(rq);  in vnic_rq_alloc()
107 		vnic_rq_free(rq);  in vnic_rq_alloc()
114 void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,  in vnic_rq_init()  argument
121 	paddr = (u64)rq->ring.base_addr | VNIC_PADDR_TARGET;  in vnic_rq_init()
122 	writeq(paddr, &rq->ctrl->ring_base);  in vnic_rq_init()
123 	iowrite32(rq->ring.desc_count, &rq->ctrl->ring_size);  in vnic_rq_init()
124 	iowrite32(cq_index, &rq->ctrl->cq_index);  in vnic_rq_init()
125 	iowrite32(error_interrupt_enable, &rq->ctrl->error_interrupt_enable);  in vnic_rq_init()
126 	iowrite32(error_interrupt_offset, &rq->ctrl->error_interrupt_offset);  in vnic_rq_init()
127 	iowrite32(0, &rq->ctrl->dropped_packet_count);  in vnic_rq_init()
128 	iowrite32(0, &rq->ctrl->error_status);  in vnic_rq_init()
131 	fetch_index = ioread32(&rq->ctrl->fetch_index);  in vnic_rq_init()
132 	rq->to_use = rq->to_clean =  in vnic_rq_init()
133 		&rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES]  in vnic_rq_init()
135 	iowrite32(fetch_index, &rq->ctrl->posted_index);  in vnic_rq_init()
137 	rq->buf_index = 0;  in vnic_rq_init()
140 unsigned int vnic_rq_error_status(struct vnic_rq *rq)  in vnic_rq_error_status()  argument
142 	return ioread32(&rq->ctrl->error_status);  in vnic_rq_error_status()
145 void vnic_rq_enable(struct vnic_rq *rq)  in vnic_rq_enable()  argument
147 	iowrite32(1, &rq->ctrl->enable);  in vnic_rq_enable()
150 int vnic_rq_disable(struct vnic_rq *rq)  in vnic_rq_disable()  argument
154 	iowrite32(0, &rq->ctrl->enable);  in vnic_rq_disable()
158 		if (!(ioread32(&rq->ctrl->running)))  in vnic_rq_disable()
163 	printk(KERN_ERR "Failed to disable RQ[%d]\n", rq->index);  in vnic_rq_disable()
168 void vnic_rq_clean(struct vnic_rq *rq,  in vnic_rq_clean()  argument
169 	void (*buf_clean)(struct vnic_rq *rq, struct vnic_rq_buf *buf))  in vnic_rq_clean()  argument
174 	BUG_ON(ioread32(&rq->ctrl->enable));  in vnic_rq_clean()
176 	buf = rq->to_clean;  in vnic_rq_clean()
178 	while (vnic_rq_desc_used(rq) > 0) {  in vnic_rq_clean()
180 		(*buf_clean)(rq, buf);  in vnic_rq_clean()
182 		buf = rq->to_clean = buf->next;  in vnic_rq_clean()
183 		rq->ring.desc_avail++;  in vnic_rq_clean()
187 	fetch_index = ioread32(&rq->ctrl->fetch_index);  in vnic_rq_clean()
188 	rq->to_use = rq->to_clean =  in vnic_rq_clean()
189 		&rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES]  in vnic_rq_clean()
191 	iowrite32(fetch_index, &rq->ctrl->posted_index);  in vnic_rq_clean()
193 	rq->buf_index = 0;  in vnic_rq_clean()
195 	vnic_dev_clear_desc_ring(&rq->ring);  in vnic_rq_clean()