Lines Matching defs:bmp
15 int msi_bitmap_alloc_hwirqs(struct msi_bitmap *bmp, int num)
20 spin_lock_irqsave(&bmp->lock, flags);
22 offset = bitmap_find_next_zero_area(bmp->bitmap, bmp->irq_count, 0,
24 if (offset > bmp->irq_count)
27 bitmap_set(bmp->bitmap, offset, num);
28 spin_unlock_irqrestore(&bmp->lock, flags);
34 spin_unlock_irqrestore(&bmp->lock, flags);
39 void msi_bitmap_free_hwirqs(struct msi_bitmap *bmp, unsigned int offset,
47 spin_lock_irqsave(&bmp->lock, flags);
48 bitmap_clear(bmp->bitmap, offset, num);
49 spin_unlock_irqrestore(&bmp->lock, flags);
53 void msi_bitmap_reserve_hwirq(struct msi_bitmap *bmp, unsigned int hwirq)
59 spin_lock_irqsave(&bmp->lock, flags);
60 bitmap_allocate_region(bmp->bitmap, hwirq, 0);
61 spin_unlock_irqrestore(&bmp->lock, flags);
66 * @bmp: pointer to the MSI bitmap.
75 int msi_bitmap_reserve_dt_hwirqs(struct msi_bitmap *bmp)
80 if (!bmp->of_node)
83 p = of_get_property(bmp->of_node, "msi-available-ranges", &len);
86 "found on %pOF\n", bmp->of_node);
92 " property on %pOF\n", bmp->of_node);
96 bitmap_allocate_region(bmp->bitmap, 0, get_count_order(bmp->irq_count));
98 spin_lock(&bmp->lock);
104 bitmap_release_region(bmp->bitmap, *p + j, 0);
107 spin_unlock(&bmp->lock);
112 int __ref msi_bitmap_alloc(struct msi_bitmap *bmp, unsigned int irq_count,
123 bmp->bitmap_from_slab = slab_is_available();
124 if (bmp->bitmap_from_slab)
125 bmp->bitmap = kzalloc(size, GFP_KERNEL);
127 bmp->bitmap = memblock_alloc(size, SMP_CACHE_BYTES);
128 if (!bmp->bitmap)
132 kmemleak_not_leak(bmp->bitmap);
135 if (!bmp->bitmap) {
141 spin_lock_init(&bmp->lock);
142 bmp->of_node = of_node_get(of_node);
143 bmp->irq_count = irq_count;
148 void msi_bitmap_free(struct msi_bitmap *bmp)
150 if (bmp->bitmap_from_slab)
151 kfree(bmp->bitmap);
152 of_node_put(bmp->of_node);
153 bmp->bitmap = NULL;
160 struct msi_bitmap bmp;
164 WARN_ON(msi_bitmap_alloc(&bmp, 0, NULL) == 0);
167 WARN_ON(msi_bitmap_alloc(&bmp, size, NULL));
170 WARN_ON(bitmap_find_free_region(bmp.bitmap, size, get_count_order(size)));
171 bitmap_release_region(bmp.bitmap, 0, get_count_order(size));
174 WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp) <= 0);
177 WARN_ON(bitmap_find_free_region(bmp.bitmap, size, get_count_order(size)));
178 bitmap_release_region(bmp.bitmap, 0, get_count_order(size));
182 WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) < 0);
184 WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) >= 0);
187 WARN_ON(bitmap_find_free_region(bmp.bitmap, size, 0) >= 0);
190 msi_bitmap_free_hwirqs(&bmp, size / 2, 1);
191 WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) != size / 2);
194 msi_bitmap_free_hwirqs(&bmp, 3, size - 3);
197 rc = msi_bitmap_alloc_hwirqs(&bmp, 2);
199 rc = msi_bitmap_alloc_hwirqs(&bmp, 4);
201 rc = msi_bitmap_alloc_hwirqs(&bmp, 8);
203 rc = msi_bitmap_alloc_hwirqs(&bmp, 9);
205 rc = msi_bitmap_alloc_hwirqs(&bmp, 3);
207 rc = msi_bitmap_alloc_hwirqs(&bmp, 7);
209 rc = msi_bitmap_alloc_hwirqs(&bmp, 121);
212 msi_bitmap_free(&bmp);
215 WARN_ON(bmp.bitmap != NULL);
226 struct msi_bitmap bmp;
235 WARN_ON(msi_bitmap_alloc(&bmp, SIZE_EXPECTED, &of_node));
238 WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp) <= 0);
241 WARN_ON(bitmap_find_free_region(bmp.bitmap, SIZE_EXPECTED,
243 bitmap_release_region(bmp.bitmap, 0, get_count_order(SIZE_EXPECTED));
256 WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp));
260 WARN_ON(!bitmap_equal(expected, bmp.bitmap, SIZE_EXPECTED));
262 msi_bitmap_free(&bmp);
263 kfree(bmp.bitmap);