2  * Copyright 2006-2008, Michael Ellerman, IBM Corporation.
21 	spin_lock_irqsave(&bmp->lock, flags);  in msi_bitmap_alloc_hwirqs()
26 	offset = bitmap_find_free_region(bmp->bitmap, bmp->irq_count, order);  in msi_bitmap_alloc_hwirqs()
27 	spin_unlock_irqrestore(&bmp->lock, flags);  in msi_bitmap_alloc_hwirqs()
44 	spin_lock_irqsave(&bmp->lock, flags);  in msi_bitmap_free_hwirqs()
45 	bitmap_release_region(bmp->bitmap, offset, order);  in msi_bitmap_free_hwirqs()
46 	spin_unlock_irqrestore(&bmp->lock, flags);  in msi_bitmap_free_hwirqs()
55 	spin_lock_irqsave(&bmp->lock, flags);  in msi_bitmap_reserve_hwirq()
56 	bitmap_allocate_region(bmp->bitmap, hwirq, 0);  in msi_bitmap_reserve_hwirq()
57 	spin_unlock_irqrestore(&bmp->lock, flags);  in msi_bitmap_reserve_hwirq()
61  * msi_bitmap_reserve_dt_hwirqs - Reserve irqs specified in the device tree.
62  * @bmp: pointer to the MSI bitmap.
65  * irqs can be used for MSI. If found those irqs reserved in the device tree
76 	if (!bmp->of_node)  in msi_bitmap_reserve_dt_hwirqs()
79 	p = of_get_property(bmp->of_node, "msi-available-ranges", &len);  in msi_bitmap_reserve_dt_hwirqs()
81 		pr_debug("msi_bitmap: no msi-available-ranges property " \  in msi_bitmap_reserve_dt_hwirqs()
82 			 "found on %s\n", bmp->of_node->full_name);  in msi_bitmap_reserve_dt_hwirqs()
87 		printk(KERN_WARNING "msi_bitmap: Malformed msi-available-ranges"  in msi_bitmap_reserve_dt_hwirqs()
88 		       " property on %s\n", bmp->of_node->full_name);  in msi_bitmap_reserve_dt_hwirqs()
89 		return -EINVAL;  in msi_bitmap_reserve_dt_hwirqs()
92 	bitmap_allocate_region(bmp->bitmap, 0, get_count_order(bmp->irq_count));  in msi_bitmap_reserve_dt_hwirqs()
94 	spin_lock(&bmp->lock);  in msi_bitmap_reserve_dt_hwirqs()
100 			bitmap_release_region(bmp->bitmap, *p + j, 0);  in msi_bitmap_reserve_dt_hwirqs()
103 	spin_unlock(&bmp->lock);  in msi_bitmap_reserve_dt_hwirqs()
114 		return -EINVAL;  in msi_bitmap_alloc()
119 	bmp->bitmap = zalloc_maybe_bootmem(size, GFP_KERNEL);  in msi_bitmap_alloc()
120 	if (!bmp->bitmap) {  in msi_bitmap_alloc()
122 		return -ENOMEM;  in msi_bitmap_alloc()
126 	spin_lock_init(&bmp->lock);  in msi_bitmap_alloc()
127 	bmp->of_node = of_node_get(of_node);  in msi_bitmap_alloc()
128 	bmp->irq_count = irq_count;  in msi_bitmap_alloc()
136 	of_node_put(bmp->of_node);  in msi_bitmap_free()
137 	bmp->bitmap = NULL;  in msi_bitmap_free()
161 	/* With no node, there's no msi-available-ranges, so expect > 0 */  in test_basics()
184 	/* Clients may check bitmap == NULL for "not-allocated" */  in test_basics()
193 	const char *expected_str = "0-9,20-24,28-39,41-99,220-255";  in test_of_node()
194 	char *prop_name = "msi-available-ranges";  in test_of_node()
209 	/* No msi-available-ranges, so expect > 0 */  in test_of_node()
217 	/* Now create a fake msi-available-ranges property */  in test_of_node()
227 	/* msi-available-ranges, so expect == 0 */  in test_of_node()
240 	printk(KERN_DEBUG "Running MSI bitmap self-tests ...\n");  in msi_bitmap_selftest()