27 static int vnic_rq_alloc_bufs(struct vnic_rq *rq)  in vnic_rq_alloc_bufs()  argument
30 	unsigned int i, j, count = rq->ring.desc_count;  in vnic_rq_alloc_bufs()
34 		rq->bufs[i] = kzalloc(VNIC_RQ_BUF_BLK_SZ, GFP_ATOMIC);  in vnic_rq_alloc_bufs()
35 		if (!rq->bufs[i]) {  in vnic_rq_alloc_bufs()
42 		buf = rq->bufs[i];  in vnic_rq_alloc_bufs()
45 			buf->desc = (u8 *)rq->ring.descs +  in vnic_rq_alloc_bufs()
46 				rq->ring.desc_size * buf->index;  in vnic_rq_alloc_bufs()
48 				buf->next = rq->bufs[0];  in vnic_rq_alloc_bufs()
51 				buf->next = rq->bufs[i + 1];  in vnic_rq_alloc_bufs()
59 	rq->to_use = rq->to_clean = rq->bufs[0];  in vnic_rq_alloc_bufs()
60 	rq->buf_index = 0;  in vnic_rq_alloc_bufs()
65 void vnic_rq_free(struct vnic_rq *rq)  in vnic_rq_free()  argument
70 	vdev = rq->vdev;  in vnic_rq_free()
72 	vnic_dev_free_desc_ring(vdev, &rq->ring);  in vnic_rq_free()
75 		kfree(rq->bufs[i]);  in vnic_rq_free()
76 		rq->bufs[i] = NULL;  in vnic_rq_free()
79 	rq->ctrl = NULL;  in vnic_rq_free()
82 int vnic_rq_alloc(struct vnic_dev *vdev, struct vnic_rq *rq, unsigned int index,  in vnic_rq_alloc()  argument
87 	rq->index = index;  in vnic_rq_alloc()
88 	rq->vdev = vdev;  in vnic_rq_alloc()
90 	rq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_RQ, index);  in vnic_rq_alloc()
91 	if (!rq->ctrl) {  in vnic_rq_alloc()
96 	vnic_rq_disable(rq);  in vnic_rq_alloc()
98 	err = vnic_dev_alloc_desc_ring(vdev, &rq->ring, desc_count, desc_size);  in vnic_rq_alloc()
102 	err = vnic_rq_alloc_bufs(rq);  in vnic_rq_alloc()
104 		vnic_rq_free(rq);  in vnic_rq_alloc()
111 void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,  in vnic_rq_init()  argument
118 	paddr = (u64)rq->ring.base_addr | VNIC_PADDR_TARGET;  in vnic_rq_init()
119 	writeq(paddr, &rq->ctrl->ring_base);  in vnic_rq_init()
120 	iowrite32(rq->ring.desc_count, &rq->ctrl->ring_size);  in vnic_rq_init()
121 	iowrite32(cq_index, &rq->ctrl->cq_index);  in vnic_rq_init()
122 	iowrite32(error_interrupt_enable, &rq->ctrl->error_interrupt_enable);  in vnic_rq_init()
123 	iowrite32(error_interrupt_offset, &rq->ctrl->error_interrupt_offset);  in vnic_rq_init()
124 	iowrite32(0, &rq->ctrl->dropped_packet_count);  in vnic_rq_init()
125 	iowrite32(0, &rq->ctrl->error_status);  in vnic_rq_init()
128 	fetch_index = ioread32(&rq->ctrl->fetch_index);  in vnic_rq_init()
129 	rq->to_use = rq->to_clean =  in vnic_rq_init()
130 		&rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES]  in vnic_rq_init()
132 	iowrite32(fetch_index, &rq->ctrl->posted_index);  in vnic_rq_init()
134 	rq->buf_index = 0;  in vnic_rq_init()
137 unsigned int vnic_rq_error_status(struct vnic_rq *rq)  in vnic_rq_error_status()  argument
139 	return ioread32(&rq->ctrl->error_status);  in vnic_rq_error_status()
142 void vnic_rq_enable(struct vnic_rq *rq)  in vnic_rq_enable()  argument
144 	iowrite32(1, &rq->ctrl->enable);  in vnic_rq_enable()
147 int vnic_rq_disable(struct vnic_rq *rq)  in vnic_rq_disable()  argument
151 	iowrite32(0, &rq->ctrl->enable);  in vnic_rq_disable()
155 		if (!(ioread32(&rq->ctrl->running)))  in vnic_rq_disable()
160 	printk(KERN_ERR "Failed to disable RQ[%d]\n", rq->index);  in vnic_rq_disable()
165 void vnic_rq_clean(struct vnic_rq *rq,  in vnic_rq_clean()  argument
166 	void (*buf_clean)(struct vnic_rq *rq, struct vnic_rq_buf *buf))  in vnic_rq_clean()  argument
171 	WARN_ON(ioread32(&rq->ctrl->enable));  in vnic_rq_clean()
173 	buf = rq->to_clean;  in vnic_rq_clean()
175 	while (vnic_rq_desc_used(rq) > 0) {  in vnic_rq_clean()
177 		(*buf_clean)(rq, buf);  in vnic_rq_clean()
179 		buf = rq->to_clean = buf->next;  in vnic_rq_clean()
180 		rq->ring.desc_avail++;  in vnic_rq_clean()
184 	fetch_index = ioread32(&rq->ctrl->fetch_index);  in vnic_rq_clean()
185 	rq->to_use = rq->to_clean =  in vnic_rq_clean()
186 		&rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES]  in vnic_rq_clean()
188 	iowrite32(fetch_index, &rq->ctrl->posted_index);  in vnic_rq_clean()
190 	rq->buf_index = 0;  in vnic_rq_clean()
192 	vnic_dev_clear_desc_ring(&rq->ring);  in vnic_rq_clean()