130 	struct airq_iv *iv;  in airq_iv_create()  local
133 	iv = kzalloc(sizeof(*iv), GFP_KERNEL);  in airq_iv_create()
134 	if (!iv)  in airq_iv_create()
136 	iv->bits = bits;  in airq_iv_create()
137 	iv->flags = flags;  in airq_iv_create()
145 		iv->vector = dma_pool_zalloc(airq_iv_cache, GFP_KERNEL,  in airq_iv_create()
146 					     &iv->vector_dma);  in airq_iv_create()
147 		if (!iv->vector)  in airq_iv_create()
150 		iv->vector = cio_dma_zalloc(size);  in airq_iv_create()
151 		if (!iv->vector)  in airq_iv_create()
155 		iv->avail = kmalloc(size, GFP_KERNEL);  in airq_iv_create()
156 		if (!iv->avail)  in airq_iv_create()
158 		memset(iv->avail, 0xff, size);  in airq_iv_create()
159 		iv->end = 0;  in airq_iv_create()
161 		iv->end = bits;  in airq_iv_create()
163 		iv->bitlock = kzalloc(size, GFP_KERNEL);  in airq_iv_create()
164 		if (!iv->bitlock)  in airq_iv_create()
169 		iv->ptr = kzalloc(size, GFP_KERNEL);  in airq_iv_create()
170 		if (!iv->ptr)  in airq_iv_create()
175 		iv->data = kzalloc(size, GFP_KERNEL);  in airq_iv_create()
176 		if (!iv->data)  in airq_iv_create()
179 	spin_lock_init(&iv->lock);  in airq_iv_create()
180 	return iv;  in airq_iv_create()
183 	kfree(iv->ptr);  in airq_iv_create()
184 	kfree(iv->bitlock);  in airq_iv_create()
185 	kfree(iv->avail);  in airq_iv_create()
186 	if (iv->flags & AIRQ_IV_CACHELINE && iv->vector)  in airq_iv_create()
187 		dma_pool_free(airq_iv_cache, iv->vector, iv->vector_dma);  in airq_iv_create()
189 		cio_dma_free(iv->vector, size);  in airq_iv_create()
190 	kfree(iv);  in airq_iv_create()
200 void airq_iv_release(struct airq_iv *iv)  in airq_iv_release()  argument
202 	kfree(iv->data);  in airq_iv_release()
203 	kfree(iv->ptr);  in airq_iv_release()
204 	kfree(iv->bitlock);  in airq_iv_release()
205 	if (iv->flags & AIRQ_IV_CACHELINE)  in airq_iv_release()
206 		dma_pool_free(airq_iv_cache, iv->vector, iv->vector_dma);  in airq_iv_release()
208 		cio_dma_free(iv->vector, iv_size(iv->bits));  in airq_iv_release()
209 	kfree(iv->avail);  in airq_iv_release()
210 	kfree(iv);  in airq_iv_release()
223 unsigned long airq_iv_alloc(struct airq_iv *iv, unsigned long num)  in airq_iv_alloc()  argument
227 	if (!iv->avail || num == 0)  in airq_iv_alloc()
229 	spin_lock_irqsave(&iv->lock, flags);  in airq_iv_alloc()
230 	bit = find_first_bit_inv(iv->avail, iv->bits);  in airq_iv_alloc()
231 	while (bit + num <= iv->bits) {  in airq_iv_alloc()
233 			if (!test_bit_inv(bit + i, iv->avail))  in airq_iv_alloc()
238 				clear_bit_inv(bit + i, iv->avail);  in airq_iv_alloc()
239 			if (bit + num >= iv->end)  in airq_iv_alloc()
240 				iv->end = bit + num + 1;  in airq_iv_alloc()
243 		bit = find_next_bit_inv(iv->avail, iv->bits, bit + i + 1);  in airq_iv_alloc()
245 	if (bit + num > iv->bits)  in airq_iv_alloc()
247 	spin_unlock_irqrestore(&iv->lock, flags);  in airq_iv_alloc()
258 void airq_iv_free(struct airq_iv *iv, unsigned long bit, unsigned long num)  in airq_iv_free()  argument
262 	if (!iv->avail || num == 0)  in airq_iv_free()
264 	spin_lock_irqsave(&iv->lock, flags);  in airq_iv_free()
267 		clear_bit_inv(bit + i, iv->vector);  in airq_iv_free()
269 		set_bit_inv(bit + i, iv->avail);  in airq_iv_free()
271 	if (bit + num >= iv->end) {  in airq_iv_free()
273 		while (iv->end > 0 && !test_bit_inv(iv->end - 1, iv->avail))  in airq_iv_free()
274 			iv->end--;  in airq_iv_free()
276 	spin_unlock_irqrestore(&iv->lock, flags);  in airq_iv_free()
289 unsigned long airq_iv_scan(struct airq_iv *iv, unsigned long start,  in airq_iv_scan()  argument
295 	bit = find_next_bit_inv(iv->vector, end, start);  in airq_iv_scan()
298 	clear_bit_inv(bit, iv->vector);  in airq_iv_scan()