72 hv_get_next_write_location(struct hv_ring_buffer_info *ring_info)  in hv_get_next_write_location()  argument
74 	u32 next = ring_info->ring_buffer->write_index;  in hv_get_next_write_location()
81 hv_set_next_write_location(struct hv_ring_buffer_info *ring_info,  in hv_set_next_write_location()  argument
84 	ring_info->ring_buffer->write_index = next_write_location;  in hv_set_next_write_location()
89 hv_get_ring_buffersize(const struct hv_ring_buffer_info *ring_info)  in hv_get_ring_buffersize()  argument
91 	return ring_info->ring_datasize;  in hv_get_ring_buffersize()
96 hv_get_ring_bufferindices(struct hv_ring_buffer_info *ring_info)  in hv_get_ring_bufferindices()  argument
98 	return (u64)ring_info->ring_buffer->write_index << 32;  in hv_get_ring_bufferindices()
106 	struct hv_ring_buffer_info	*ring_info,  in hv_copyto_ringbuffer()  argument
111 	void *ring_buffer = hv_get_ring_buffer(ring_info);  in hv_copyto_ringbuffer()
112 	u32 ring_buffer_size = hv_get_ring_buffersize(ring_info);  in hv_copyto_ringbuffer()
147 int hv_ringbuffer_get_debuginfo(struct hv_ring_buffer_info *ring_info,  in hv_ringbuffer_get_debuginfo()  argument
153 	mutex_lock(&ring_info->ring_buffer_mutex);  in hv_ringbuffer_get_debuginfo()
155 	if (!ring_info->ring_buffer) {  in hv_ringbuffer_get_debuginfo()
156 		mutex_unlock(&ring_info->ring_buffer_mutex);  in hv_ringbuffer_get_debuginfo()
160 	hv_get_ringbuffer_availbytes(ring_info,  in hv_ringbuffer_get_debuginfo()
165 	debug_info->current_read_index = ring_info->ring_buffer->read_index;  in hv_ringbuffer_get_debuginfo()
166 	debug_info->current_write_index = ring_info->ring_buffer->write_index;  in hv_ringbuffer_get_debuginfo()
168 		= ring_info->ring_buffer->interrupt_mask;  in hv_ringbuffer_get_debuginfo()
169 	mutex_unlock(&ring_info->ring_buffer_mutex);  in hv_ringbuffer_get_debuginfo()
183 int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info,  in hv_ringbuffer_init()  argument
204 	ring_info->ring_buffer = (struct hv_ring_buffer *)  in hv_ringbuffer_init()
210 	if (!ring_info->ring_buffer)  in hv_ringbuffer_init()
213 	ring_info->ring_buffer->read_index =  in hv_ringbuffer_init()
214 		ring_info->ring_buffer->write_index = 0;  in hv_ringbuffer_init()
217 	ring_info->ring_buffer->feature_bits.value = 1;  in hv_ringbuffer_init()
219 	ring_info->ring_size = page_cnt << PAGE_SHIFT;  in hv_ringbuffer_init()
220 	ring_info->ring_size_div10_reciprocal =  in hv_ringbuffer_init()
221 		reciprocal_value(ring_info->ring_size / 10);  in hv_ringbuffer_init()
222 	ring_info->ring_datasize = ring_info->ring_size -  in hv_ringbuffer_init()
224 	ring_info->priv_read_index = 0;  in hv_ringbuffer_init()
228 		ring_info->pkt_buffer = kzalloc(max_pkt_size, GFP_KERNEL);  in hv_ringbuffer_init()
229 		if (!ring_info->pkt_buffer)  in hv_ringbuffer_init()
231 		ring_info->pkt_buffer_size = max_pkt_size;  in hv_ringbuffer_init()
234 	spin_lock_init(&ring_info->ring_lock);  in hv_ringbuffer_init()
240 void hv_ringbuffer_cleanup(struct hv_ring_buffer_info *ring_info)  in hv_ringbuffer_cleanup()  argument
242 	mutex_lock(&ring_info->ring_buffer_mutex);  in hv_ringbuffer_cleanup()
243 	vunmap(ring_info->ring_buffer);  in hv_ringbuffer_cleanup()
244 	ring_info->ring_buffer = NULL;  in hv_ringbuffer_cleanup()
245 	mutex_unlock(&ring_info->ring_buffer_mutex);  in hv_ringbuffer_cleanup()
247 	kfree(ring_info->pkt_buffer);  in hv_ringbuffer_cleanup()
248 	ring_info->pkt_buffer = NULL;  in hv_ringbuffer_cleanup()
249 	ring_info->pkt_buffer_size = 0;  in hv_ringbuffer_cleanup()