30 static int vnic_rq_alloc_bufs(struct vnic_rq *rq)  in vnic_rq_alloc_bufs()  argument
34 	unsigned int i, j, count = rq->ring.desc_count;  in vnic_rq_alloc_bufs()
37 	vdev = rq->vdev;  in vnic_rq_alloc_bufs()
40 		rq->bufs[i] = kzalloc(VNIC_RQ_BUF_BLK_SZ(count), GFP_ATOMIC);  in vnic_rq_alloc_bufs()
41 		if (!rq->bufs[i])  in vnic_rq_alloc_bufs()
46 		buf = rq->bufs[i];  in vnic_rq_alloc_bufs()
49 			buf->desc = (u8 *)rq->ring.descs +  in vnic_rq_alloc_bufs()
50 				rq->ring.desc_size * buf->index;  in vnic_rq_alloc_bufs()
52 				buf->next = rq->bufs[0];  in vnic_rq_alloc_bufs()
55 				buf->next = rq->bufs[i + 1];  in vnic_rq_alloc_bufs()
63 	rq->to_use = rq->to_clean = rq->bufs[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 		if (rq->bufs[i]) {  in vnic_rq_free()
79 			kfree(rq->bufs[i]);  in vnic_rq_free()
80 			rq->bufs[i] = NULL;  in vnic_rq_free()
84 	rq->ctrl = NULL;  in vnic_rq_free()
87 int vnic_rq_alloc(struct vnic_dev *vdev, struct vnic_rq *rq, unsigned int index,  in vnic_rq_alloc()  argument
92 	rq->index = index;  in vnic_rq_alloc()
93 	rq->vdev = vdev;  in vnic_rq_alloc()
95 	rq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_RQ, index);  in vnic_rq_alloc()
96 	if (!rq->ctrl) {  in vnic_rq_alloc()
101 	vnic_rq_disable(rq);  in vnic_rq_alloc()
103 	err = vnic_dev_alloc_desc_ring(vdev, &rq->ring, desc_count, desc_size);  in vnic_rq_alloc()
107 	err = vnic_rq_alloc_bufs(rq);  in vnic_rq_alloc()
109 		vnic_rq_free(rq);  in vnic_rq_alloc()
116 static void vnic_rq_init_start(struct vnic_rq *rq, unsigned int cq_index,  in vnic_rq_init_start()  argument
122 	unsigned int count = rq->ring.desc_count;  in vnic_rq_init_start()
124 	paddr = (u64)rq->ring.base_addr | VNIC_PADDR_TARGET;  in vnic_rq_init_start()
125 	writeq(paddr, &rq->ctrl->ring_base);  in vnic_rq_init_start()
126 	iowrite32(count, &rq->ctrl->ring_size);  in vnic_rq_init_start()
127 	iowrite32(cq_index, &rq->ctrl->cq_index);  in vnic_rq_init_start()
128 	iowrite32(error_interrupt_enable, &rq->ctrl->error_interrupt_enable);  in vnic_rq_init_start()
129 	iowrite32(error_interrupt_offset, &rq->ctrl->error_interrupt_offset);  in vnic_rq_init_start()
130 	iowrite32(0, &rq->ctrl->dropped_packet_count);  in vnic_rq_init_start()
131 	iowrite32(0, &rq->ctrl->error_status);  in vnic_rq_init_start()
132 	iowrite32(fetch_index, &rq->ctrl->fetch_index);  in vnic_rq_init_start()
133 	iowrite32(posted_index, &rq->ctrl->posted_index);  in vnic_rq_init_start()
135 	rq->to_use = rq->to_clean =  in vnic_rq_init_start()
136 		&rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES(count)]  in vnic_rq_init_start()
140 void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,  in vnic_rq_init()  argument
147 	fetch_index = ioread32(&rq->ctrl->fetch_index);  in vnic_rq_init()
154 	vnic_rq_init_start(rq, cq_index,  in vnic_rq_init()
160 unsigned int vnic_rq_error_status(struct vnic_rq *rq)  in vnic_rq_error_status()  argument
162 	return ioread32(&rq->ctrl->error_status);  in vnic_rq_error_status()
165 void vnic_rq_enable(struct vnic_rq *rq)  in vnic_rq_enable()  argument
167 	iowrite32(1, &rq->ctrl->enable);  in vnic_rq_enable()
170 int vnic_rq_disable(struct vnic_rq *rq)  in vnic_rq_disable()  argument
174 	iowrite32(0, &rq->ctrl->enable);  in vnic_rq_disable()
178 		if (!(ioread32(&rq->ctrl->running)))  in vnic_rq_disable()
183 	pr_err("Failed to disable RQ[%d]\n", rq->index);  in vnic_rq_disable()
188 void vnic_rq_clean(struct vnic_rq *rq,  in vnic_rq_clean()  argument
189 	void (*buf_clean)(struct vnic_rq *rq, struct vnic_rq_buf *buf))  in vnic_rq_clean()  argument
193 	unsigned int count = rq->ring.desc_count;  in vnic_rq_clean()
195 	buf = rq->to_clean;  in vnic_rq_clean()
197 	while (vnic_rq_desc_used(rq) > 0) {  in vnic_rq_clean()
199 		(*buf_clean)(rq, buf);  in vnic_rq_clean()
201 		buf = rq->to_clean = buf->next;  in vnic_rq_clean()
202 		rq->ring.desc_avail++;  in vnic_rq_clean()
206 	fetch_index = ioread32(&rq->ctrl->fetch_index);  in vnic_rq_clean()
212 	rq->to_use = rq->to_clean =  in vnic_rq_clean()
213 		&rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES(count)]  in vnic_rq_clean()
215 	iowrite32(fetch_index, &rq->ctrl->posted_index);  in vnic_rq_clean()
217 	vnic_dev_clear_desc_ring(&rq->ring);  in vnic_rq_clean()