222 int mthca_table_get(struct mthca_dev *dev, struct mthca_icm_table *table, int obj)  in mthca_table_get()  argument
224 	int i = (obj & (table->num_obj - 1)) * table->obj_size / MTHCA_TABLE_CHUNK_SIZE;  in mthca_table_get()
227 	mutex_lock(&table->mutex);  in mthca_table_get()
229 	if (table->icm[i]) {  in mthca_table_get()
230 		++table->icm[i]->refcount;  in mthca_table_get()
234 	table->icm[i] = mthca_alloc_icm(dev, MTHCA_TABLE_CHUNK_SIZE >> PAGE_SHIFT,  in mthca_table_get()
235 					(table->lowmem ? GFP_KERNEL : GFP_HIGHUSER) |  in mthca_table_get()
236 					__GFP_NOWARN, table->coherent);  in mthca_table_get()
237 	if (!table->icm[i]) {  in mthca_table_get()
242 	if (mthca_MAP_ICM(dev, table->icm[i],  in mthca_table_get()
243 			  table->virt + i * MTHCA_TABLE_CHUNK_SIZE)) {  in mthca_table_get()
244 		mthca_free_icm(dev, table->icm[i], table->coherent);  in mthca_table_get()
245 		table->icm[i] = NULL;  in mthca_table_get()
250 	++table->icm[i]->refcount;  in mthca_table_get()
253 	mutex_unlock(&table->mutex);  in mthca_table_get()
257 void mthca_table_put(struct mthca_dev *dev, struct mthca_icm_table *table, int obj)  in mthca_table_put()  argument
264 	i = (obj & (table->num_obj - 1)) * table->obj_size / MTHCA_TABLE_CHUNK_SIZE;  in mthca_table_put()
266 	mutex_lock(&table->mutex);  in mthca_table_put()
268 	if (--table->icm[i]->refcount == 0) {  in mthca_table_put()
269 		mthca_UNMAP_ICM(dev, table->virt + i * MTHCA_TABLE_CHUNK_SIZE,  in mthca_table_put()
271 		mthca_free_icm(dev, table->icm[i], table->coherent);  in mthca_table_put()
272 		table->icm[i] = NULL;  in mthca_table_put()
275 	mutex_unlock(&table->mutex);  in mthca_table_put()
278 void *mthca_table_find(struct mthca_icm_table *table, int obj, dma_addr_t *dma_handle)  in mthca_table_find()  argument
285 	if (!table->lowmem)  in mthca_table_find()
288 	mutex_lock(&table->mutex);  in mthca_table_find()
290 	idx = (obj & (table->num_obj - 1)) * table->obj_size;  in mthca_table_find()
291 	icm = table->icm[idx / MTHCA_TABLE_CHUNK_SIZE];  in mthca_table_find()
317 	mutex_unlock(&table->mutex);  in mthca_table_find()
321 int mthca_table_get_range(struct mthca_dev *dev, struct mthca_icm_table *table,  in mthca_table_get_range()  argument
324 	int inc = MTHCA_TABLE_CHUNK_SIZE / table->obj_size;  in mthca_table_get_range()
328 		err = mthca_table_get(dev, table, i);  in mthca_table_get_range()
338 		mthca_table_put(dev, table, i);  in mthca_table_get_range()
344 void mthca_table_put_range(struct mthca_dev *dev, struct mthca_icm_table *table,  in mthca_table_put_range()  argument
352 	for (i = start; i <= end; i += MTHCA_TABLE_CHUNK_SIZE / table->obj_size)  in mthca_table_put_range()
353 		mthca_table_put(dev, table, i);  in mthca_table_put_range()
361 	struct mthca_icm_table *table;  in mthca_alloc_icm_table()  local
370 	table = kmalloc(struct_size(table, icm, num_icm), GFP_KERNEL);  in mthca_alloc_icm_table()
371 	if (!table)  in mthca_alloc_icm_table()
374 	table->virt     = virt;  in mthca_alloc_icm_table()
375 	table->num_icm  = num_icm;  in mthca_alloc_icm_table()
376 	table->num_obj  = nobj;  in mthca_alloc_icm_table()
377 	table->obj_size = obj_size;  in mthca_alloc_icm_table()
378 	table->lowmem   = use_lowmem;  in mthca_alloc_icm_table()
379 	table->coherent = use_coherent;  in mthca_alloc_icm_table()
380 	mutex_init(&table->mutex);  in mthca_alloc_icm_table()
383 		table->icm[i] = NULL;  in mthca_alloc_icm_table()
390 		table->icm[i] = mthca_alloc_icm(dev, chunk_size >> PAGE_SHIFT,  in mthca_alloc_icm_table()
393 		if (!table->icm[i])  in mthca_alloc_icm_table()
395 		if (mthca_MAP_ICM(dev, table->icm[i],  in mthca_alloc_icm_table()
397 			mthca_free_icm(dev, table->icm[i], table->coherent);  in mthca_alloc_icm_table()
398 			table->icm[i] = NULL;  in mthca_alloc_icm_table()
406 		++table->icm[i]->refcount;  in mthca_alloc_icm_table()
409 	return table;  in mthca_alloc_icm_table()
413 		if (table->icm[i]) {  in mthca_alloc_icm_table()
416 			mthca_free_icm(dev, table->icm[i], table->coherent);  in mthca_alloc_icm_table()
419 	kfree(table);  in mthca_alloc_icm_table()
424 void mthca_free_icm_table(struct mthca_dev *dev, struct mthca_icm_table *table)  in mthca_free_icm_table()  argument
428 	for (i = 0; i < table->num_icm; ++i)  in mthca_free_icm_table()
429 		if (table->icm[i]) {  in mthca_free_icm_table()
431 					table->virt + i * MTHCA_TABLE_CHUNK_SIZE,  in mthca_free_icm_table()
433 			mthca_free_icm(dev, table->icm[i], table->coherent);  in mthca_free_icm_table()
436 	kfree(table);  in mthca_free_icm_table()