Lines Matching refs: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_or_panic(size, SMP_CACHE_BYTES);
129 kmemleak_not_leak(bmp->bitmap);
132 if (!bmp->bitmap) {
138 spin_lock_init(&bmp->lock);
139 bmp->of_node = of_node_get(of_node);
140 bmp->irq_count = irq_count;
145 void msi_bitmap_free(struct msi_bitmap *bmp)
147 if (bmp->bitmap_from_slab)
148 kfree(bmp->bitmap);
149 of_node_put(bmp->of_node);
150 bmp->bitmap = NULL;
157 struct msi_bitmap bmp;
161 WARN_ON(msi_bitmap_alloc(&bmp, 0, NULL) == 0);
164 WARN_ON(msi_bitmap_alloc(&bmp, size, NULL));
167 WARN_ON(bitmap_find_free_region(bmp.bitmap, size, get_count_order(size)));
168 bitmap_release_region(bmp.bitmap, 0, get_count_order(size));
171 WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp) <= 0);
174 WARN_ON(bitmap_find_free_region(bmp.bitmap, size, get_count_order(size)));
175 bitmap_release_region(bmp.bitmap, 0, get_count_order(size));
179 WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) < 0);
181 WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) >= 0);
184 WARN_ON(bitmap_find_free_region(bmp.bitmap, size, 0) >= 0);
187 msi_bitmap_free_hwirqs(&bmp, size / 2, 1);
188 WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) != size / 2);
191 msi_bitmap_free_hwirqs(&bmp, 3, size - 3);
194 rc = msi_bitmap_alloc_hwirqs(&bmp, 2);
196 rc = msi_bitmap_alloc_hwirqs(&bmp, 4);
198 rc = msi_bitmap_alloc_hwirqs(&bmp, 8);
200 rc = msi_bitmap_alloc_hwirqs(&bmp, 9);
202 rc = msi_bitmap_alloc_hwirqs(&bmp, 3);
204 rc = msi_bitmap_alloc_hwirqs(&bmp, 7);
206 rc = msi_bitmap_alloc_hwirqs(&bmp, 121);
209 msi_bitmap_free(&bmp);
212 WARN_ON(bmp.bitmap != NULL);
223 struct msi_bitmap bmp;
232 WARN_ON(msi_bitmap_alloc(&bmp, SIZE_EXPECTED, &of_node));
235 WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp) <= 0);
238 WARN_ON(bitmap_find_free_region(bmp.bitmap, SIZE_EXPECTED,
240 bitmap_release_region(bmp.bitmap, 0, get_count_order(SIZE_EXPECTED));
253 WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp));
257 WARN_ON(!bitmap_equal(expected, bmp.bitmap, SIZE_EXPECTED));
259 msi_bitmap_free(&bmp);
260 kfree(bmp.bitmap);