31 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()
38 		rq->bufs[i] = kzalloc(VNIC_RQ_BUF_BLK_SZ(count), GFP_ATOMIC);  in vnic_rq_alloc_bufs()
39 		if (!rq->bufs[i])  in vnic_rq_alloc_bufs()
44 		buf = rq->bufs[i];  in vnic_rq_alloc_bufs()
47 			buf->desc = (u8 *)rq->ring.descs +  in vnic_rq_alloc_bufs()
48 				rq->ring.desc_size * buf->index;  in vnic_rq_alloc_bufs()
50 				buf->next = rq->bufs[0];  in vnic_rq_alloc_bufs()
53 				buf->next = rq->bufs[i + 1];  in vnic_rq_alloc_bufs()
61 	rq->to_use = rq->to_clean = rq->bufs[0];  in vnic_rq_alloc_bufs()
66 void vnic_rq_free(struct vnic_rq *rq)  in vnic_rq_free()  argument
71 	vdev = rq->vdev;  in vnic_rq_free()
73 	vnic_dev_free_desc_ring(vdev, &rq->ring);  in vnic_rq_free()
76 		if (rq->bufs[i]) {  in vnic_rq_free()
77 			kfree(rq->bufs[i]);  in vnic_rq_free()
78 			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 static void vnic_rq_init_start(struct vnic_rq *rq, unsigned int cq_index,  in vnic_rq_init_start()  argument
120 	unsigned int count = rq->ring.desc_count;  in vnic_rq_init_start()
122 	paddr = (u64)rq->ring.base_addr | VNIC_PADDR_TARGET;  in vnic_rq_init_start()
123 	writeq(paddr, &rq->ctrl->ring_base);  in vnic_rq_init_start()
124 	iowrite32(count, &rq->ctrl->ring_size);  in vnic_rq_init_start()
125 	iowrite32(cq_index, &rq->ctrl->cq_index);  in vnic_rq_init_start()
126 	iowrite32(error_interrupt_enable, &rq->ctrl->error_interrupt_enable);  in vnic_rq_init_start()
127 	iowrite32(error_interrupt_offset, &rq->ctrl->error_interrupt_offset);  in vnic_rq_init_start()
128 	iowrite32(0, &rq->ctrl->dropped_packet_count);  in vnic_rq_init_start()
129 	iowrite32(0, &rq->ctrl->error_status);  in vnic_rq_init_start()
130 	iowrite32(fetch_index, &rq->ctrl->fetch_index);  in vnic_rq_init_start()
131 	iowrite32(posted_index, &rq->ctrl->posted_index);  in vnic_rq_init_start()
133 	rq->to_use = rq->to_clean =  in vnic_rq_init_start()
134 		&rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES(count)]  in vnic_rq_init_start()
138 void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,  in vnic_rq_init()  argument
145 	fetch_index = ioread32(&rq->ctrl->fetch_index);  in vnic_rq_init()
152 	vnic_rq_init_start(rq, cq_index,  in vnic_rq_init()
158 unsigned int vnic_rq_error_status(struct vnic_rq *rq)  in vnic_rq_error_status()  argument
160 	return ioread32(&rq->ctrl->error_status);  in vnic_rq_error_status()
163 void vnic_rq_enable(struct vnic_rq *rq)  in vnic_rq_enable()  argument
165 	iowrite32(1, &rq->ctrl->enable);  in vnic_rq_enable()
168 int vnic_rq_disable(struct vnic_rq *rq)  in vnic_rq_disable()  argument
171 	struct vnic_dev *vdev = rq->vdev;  in vnic_rq_disable()
179 		iowrite32(0, &rq->ctrl->enable);  in vnic_rq_disable()
183 			if (!ioread32(&rq->ctrl->running))  in vnic_rq_disable()
187 				    rq->index);  in vnic_rq_disable()
196 void vnic_rq_clean(struct vnic_rq *rq,  in vnic_rq_clean()  argument
197 	void (*buf_clean)(struct vnic_rq *rq, struct vnic_rq_buf *buf))  in vnic_rq_clean()  argument
201 	unsigned int count = rq->ring.desc_count;  in vnic_rq_clean()
204 	buf = rq->to_clean;  in vnic_rq_clean()
206 	for (i = 0; i < rq->ring.desc_count; i++) {  in vnic_rq_clean()
207 		(*buf_clean)(rq, buf);  in vnic_rq_clean()
210 	rq->ring.desc_avail = rq->ring.desc_count - 1;  in vnic_rq_clean()
213 	fetch_index = ioread32(&rq->ctrl->fetch_index);  in vnic_rq_clean()
219 	rq->to_use = rq->to_clean =  in vnic_rq_clean()
220 		&rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES(count)]  in vnic_rq_clean()
222 	iowrite32(fetch_index, &rq->ctrl->posted_index);  in vnic_rq_clean()
227 	iowrite32(0, &rq->ctrl->enable);  in vnic_rq_clean()
229 	vnic_dev_clear_desc_ring(&rq->ring);  in vnic_rq_clean()