Lines Matching refs:bmp
14 int msi_bitmap_alloc_hwirqs(struct msi_bitmap *bmp, int num) in msi_bitmap_alloc_hwirqs() argument
19 spin_lock_irqsave(&bmp->lock, flags); in msi_bitmap_alloc_hwirqs()
21 offset = bitmap_find_next_zero_area(bmp->bitmap, bmp->irq_count, 0, in msi_bitmap_alloc_hwirqs()
23 if (offset > bmp->irq_count) in msi_bitmap_alloc_hwirqs()
26 bitmap_set(bmp->bitmap, offset, num); in msi_bitmap_alloc_hwirqs()
27 spin_unlock_irqrestore(&bmp->lock, flags); in msi_bitmap_alloc_hwirqs()
33 spin_unlock_irqrestore(&bmp->lock, flags); in msi_bitmap_alloc_hwirqs()
38 void msi_bitmap_free_hwirqs(struct msi_bitmap *bmp, unsigned int offset, in msi_bitmap_free_hwirqs() argument
46 spin_lock_irqsave(&bmp->lock, flags); in msi_bitmap_free_hwirqs()
47 bitmap_clear(bmp->bitmap, offset, num); in msi_bitmap_free_hwirqs()
48 spin_unlock_irqrestore(&bmp->lock, flags); in msi_bitmap_free_hwirqs()
52 void msi_bitmap_reserve_hwirq(struct msi_bitmap *bmp, unsigned int hwirq) in msi_bitmap_reserve_hwirq() argument
58 spin_lock_irqsave(&bmp->lock, flags); in msi_bitmap_reserve_hwirq()
59 bitmap_allocate_region(bmp->bitmap, hwirq, 0); in msi_bitmap_reserve_hwirq()
60 spin_unlock_irqrestore(&bmp->lock, flags); in msi_bitmap_reserve_hwirq()
74 int msi_bitmap_reserve_dt_hwirqs(struct msi_bitmap *bmp) in msi_bitmap_reserve_dt_hwirqs() argument
79 if (!bmp->of_node) in msi_bitmap_reserve_dt_hwirqs()
82 p = of_get_property(bmp->of_node, "msi-available-ranges", &len); in msi_bitmap_reserve_dt_hwirqs()
85 "found on %pOF\n", bmp->of_node); in msi_bitmap_reserve_dt_hwirqs()
91 " property on %pOF\n", bmp->of_node); in msi_bitmap_reserve_dt_hwirqs()
95 bitmap_allocate_region(bmp->bitmap, 0, get_count_order(bmp->irq_count)); in msi_bitmap_reserve_dt_hwirqs()
97 spin_lock(&bmp->lock); in msi_bitmap_reserve_dt_hwirqs()
103 bitmap_release_region(bmp->bitmap, *p + j, 0); in msi_bitmap_reserve_dt_hwirqs()
106 spin_unlock(&bmp->lock); in msi_bitmap_reserve_dt_hwirqs()
111 int __ref msi_bitmap_alloc(struct msi_bitmap *bmp, unsigned int irq_count, in msi_bitmap_alloc() argument
122 bmp->bitmap_from_slab = slab_is_available(); in msi_bitmap_alloc()
123 if (bmp->bitmap_from_slab) in msi_bitmap_alloc()
124 bmp->bitmap = kzalloc(size, GFP_KERNEL); in msi_bitmap_alloc()
126 bmp->bitmap = memblock_alloc(size, SMP_CACHE_BYTES); in msi_bitmap_alloc()
127 if (!bmp->bitmap) in msi_bitmap_alloc()
131 kmemleak_not_leak(bmp->bitmap); in msi_bitmap_alloc()
134 if (!bmp->bitmap) { in msi_bitmap_alloc()
140 spin_lock_init(&bmp->lock); in msi_bitmap_alloc()
141 bmp->of_node = of_node_get(of_node); in msi_bitmap_alloc()
142 bmp->irq_count = irq_count; in msi_bitmap_alloc()
147 void msi_bitmap_free(struct msi_bitmap *bmp) in msi_bitmap_free() argument
149 if (bmp->bitmap_from_slab) in msi_bitmap_free()
150 kfree(bmp->bitmap); in msi_bitmap_free()
151 of_node_put(bmp->of_node); in msi_bitmap_free()
152 bmp->bitmap = NULL; in msi_bitmap_free()
159 struct msi_bitmap bmp; in test_basics() local
163 WARN_ON(msi_bitmap_alloc(&bmp, 0, NULL) == 0); in test_basics()
166 WARN_ON(msi_bitmap_alloc(&bmp, size, NULL)); in test_basics()
169 WARN_ON(bitmap_find_free_region(bmp.bitmap, size, get_count_order(size))); in test_basics()
170 bitmap_release_region(bmp.bitmap, 0, get_count_order(size)); in test_basics()
173 WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp) <= 0); in test_basics()
176 WARN_ON(bitmap_find_free_region(bmp.bitmap, size, get_count_order(size))); in test_basics()
177 bitmap_release_region(bmp.bitmap, 0, get_count_order(size)); in test_basics()
181 WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) < 0); in test_basics()
183 WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) >= 0); in test_basics()
186 WARN_ON(bitmap_find_free_region(bmp.bitmap, size, 0) >= 0); in test_basics()
189 msi_bitmap_free_hwirqs(&bmp, size / 2, 1); in test_basics()
190 WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) != size / 2); in test_basics()
193 msi_bitmap_free_hwirqs(&bmp, 3, size - 3); in test_basics()
196 rc = msi_bitmap_alloc_hwirqs(&bmp, 2); in test_basics()
198 rc = msi_bitmap_alloc_hwirqs(&bmp, 4); in test_basics()
200 rc = msi_bitmap_alloc_hwirqs(&bmp, 8); in test_basics()
202 rc = msi_bitmap_alloc_hwirqs(&bmp, 9); in test_basics()
204 rc = msi_bitmap_alloc_hwirqs(&bmp, 3); in test_basics()
206 rc = msi_bitmap_alloc_hwirqs(&bmp, 7); in test_basics()
208 rc = msi_bitmap_alloc_hwirqs(&bmp, 121); in test_basics()
211 msi_bitmap_free(&bmp); in test_basics()
214 WARN_ON(bmp.bitmap != NULL); in test_basics()
225 struct msi_bitmap bmp; in test_of_node() local
234 WARN_ON(msi_bitmap_alloc(&bmp, SIZE_EXPECTED, &of_node)); in test_of_node()
237 WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp) <= 0); in test_of_node()
240 WARN_ON(bitmap_find_free_region(bmp.bitmap, SIZE_EXPECTED, in test_of_node()
242 bitmap_release_region(bmp.bitmap, 0, get_count_order(SIZE_EXPECTED)); in test_of_node()
255 WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp)); in test_of_node()
259 WARN_ON(!bitmap_equal(expected, bmp.bitmap, SIZE_EXPECTED)); in test_of_node()
261 msi_bitmap_free(&bmp); in test_of_node()
262 kfree(bmp.bitmap); in test_of_node()