30 static int vnic_wq_alloc_bufs(struct vnic_wq *wq)  in vnic_wq_alloc_bufs()  argument
33 	unsigned int i, j, count = wq->ring.desc_count;  in vnic_wq_alloc_bufs()
37 		wq->bufs[i] = kzalloc(VNIC_WQ_BUF_BLK_SZ(count), GFP_ATOMIC);  in vnic_wq_alloc_bufs()
38 		if (!wq->bufs[i])  in vnic_wq_alloc_bufs()
43 		buf = wq->bufs[i];  in vnic_wq_alloc_bufs()
46 			buf->desc = (u8 *)wq->ring.descs +  in vnic_wq_alloc_bufs()
47 				wq->ring.desc_size * buf->index;  in vnic_wq_alloc_bufs()
49 				buf->next = wq->bufs[0];  in vnic_wq_alloc_bufs()
53 				buf->next = wq->bufs[i + 1];  in vnic_wq_alloc_bufs()
63 	wq->to_use = wq->to_clean = wq->bufs[0];  in vnic_wq_alloc_bufs()
68 void vnic_wq_free(struct vnic_wq *wq)  in vnic_wq_free()  argument
73 	vdev = wq->vdev;  in vnic_wq_free()
75 	vnic_dev_free_desc_ring(vdev, &wq->ring);  in vnic_wq_free()
78 		if (wq->bufs[i]) {  in vnic_wq_free()
79 			kfree(wq->bufs[i]);  in vnic_wq_free()
80 			wq->bufs[i] = NULL;  in vnic_wq_free()
84 	wq->ctrl = NULL;  in vnic_wq_free()
87 int vnic_wq_alloc(struct vnic_dev *vdev, struct vnic_wq *wq, unsigned int index,  in vnic_wq_alloc()  argument
92 	wq->index = index;  in vnic_wq_alloc()
93 	wq->vdev = vdev;  in vnic_wq_alloc()
95 	wq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_WQ, index);  in vnic_wq_alloc()
96 	if (!wq->ctrl) {  in vnic_wq_alloc()
101 	vnic_wq_disable(wq);  in vnic_wq_alloc()
103 	err = vnic_dev_alloc_desc_ring(vdev, &wq->ring, desc_count, desc_size);  in vnic_wq_alloc()
107 	err = vnic_wq_alloc_bufs(wq);  in vnic_wq_alloc()
109 		vnic_wq_free(wq);  in vnic_wq_alloc()
116 static void vnic_wq_init_start(struct vnic_wq *wq, unsigned int cq_index,  in vnic_wq_init_start()  argument
122 	unsigned int count = wq->ring.desc_count;  in vnic_wq_init_start()
124 	paddr = (u64)wq->ring.base_addr | VNIC_PADDR_TARGET;  in vnic_wq_init_start()
125 	writeq(paddr, &wq->ctrl->ring_base);  in vnic_wq_init_start()
126 	iowrite32(count, &wq->ctrl->ring_size);  in vnic_wq_init_start()
127 	iowrite32(fetch_index, &wq->ctrl->fetch_index);  in vnic_wq_init_start()
128 	iowrite32(posted_index, &wq->ctrl->posted_index);  in vnic_wq_init_start()
129 	iowrite32(cq_index, &wq->ctrl->cq_index);  in vnic_wq_init_start()
130 	iowrite32(error_interrupt_enable, &wq->ctrl->error_interrupt_enable);  in vnic_wq_init_start()
131 	iowrite32(error_interrupt_offset, &wq->ctrl->error_interrupt_offset);  in vnic_wq_init_start()
132 	iowrite32(0, &wq->ctrl->error_status);  in vnic_wq_init_start()
134 	wq->to_use = wq->to_clean =  in vnic_wq_init_start()
135 		&wq->bufs[fetch_index / VNIC_WQ_BUF_BLK_ENTRIES(count)]  in vnic_wq_init_start()
139 void vnic_wq_init(struct vnic_wq *wq, unsigned int cq_index,  in vnic_wq_init()  argument
143 	vnic_wq_init_start(wq, cq_index, 0, 0,  in vnic_wq_init()
148 unsigned int vnic_wq_error_status(struct vnic_wq *wq)  in vnic_wq_error_status()  argument
150 	return ioread32(&wq->ctrl->error_status);  in vnic_wq_error_status()
153 void vnic_wq_enable(struct vnic_wq *wq)  in vnic_wq_enable()  argument
155 	iowrite32(1, &wq->ctrl->enable);  in vnic_wq_enable()
158 int vnic_wq_disable(struct vnic_wq *wq)  in vnic_wq_disable()  argument
162 	iowrite32(0, &wq->ctrl->enable);  in vnic_wq_disable()
166 		if (!(ioread32(&wq->ctrl->running)))  in vnic_wq_disable()
171 	pr_err("Failed to disable WQ[%d]\n", wq->index);  in vnic_wq_disable()
176 void vnic_wq_clean(struct vnic_wq *wq,  in vnic_wq_clean()  argument
177 	void (*buf_clean)(struct vnic_wq *wq, struct vnic_wq_buf *buf))  in vnic_wq_clean()  argument
181 	buf = wq->to_clean;  in vnic_wq_clean()
183 	while (vnic_wq_desc_used(wq) > 0) {  in vnic_wq_clean()
185 		(*buf_clean)(wq, buf);  in vnic_wq_clean()
187 		buf = wq->to_clean = buf->next;  in vnic_wq_clean()
188 		wq->ring.desc_avail++;  in vnic_wq_clean()
191 	wq->to_use = wq->to_clean = wq->bufs[0];  in vnic_wq_clean()
193 	iowrite32(0, &wq->ctrl->fetch_index);  in vnic_wq_clean()
194 	iowrite32(0, &wq->ctrl->posted_index);  in vnic_wq_clean()
195 	iowrite32(0, &wq->ctrl->error_status);  in vnic_wq_clean()
197 	vnic_dev_clear_desc_ring(&wq->ring);  in vnic_wq_clean()