Lines Matching refs:bmp
15 int msi_bitmap_alloc_hwirqs(struct msi_bitmap *bmp, int num) in msi_bitmap_alloc_hwirqs() argument
20 spin_lock_irqsave(&bmp->lock, flags); in msi_bitmap_alloc_hwirqs()
22 offset = bitmap_find_next_zero_area(bmp->bitmap, bmp->irq_count, 0, in msi_bitmap_alloc_hwirqs()
24 if (offset > bmp->irq_count) in msi_bitmap_alloc_hwirqs()
27 bitmap_set(bmp->bitmap, offset, num); in msi_bitmap_alloc_hwirqs()
28 spin_unlock_irqrestore(&bmp->lock, flags); in msi_bitmap_alloc_hwirqs()
34 spin_unlock_irqrestore(&bmp->lock, flags); in msi_bitmap_alloc_hwirqs()
39 void msi_bitmap_free_hwirqs(struct msi_bitmap *bmp, unsigned int offset, in msi_bitmap_free_hwirqs() argument
47 spin_lock_irqsave(&bmp->lock, flags); in msi_bitmap_free_hwirqs()
48 bitmap_clear(bmp->bitmap, offset, num); in msi_bitmap_free_hwirqs()
49 spin_unlock_irqrestore(&bmp->lock, flags); in msi_bitmap_free_hwirqs()
53 void msi_bitmap_reserve_hwirq(struct msi_bitmap *bmp, unsigned int hwirq) in msi_bitmap_reserve_hwirq() argument
59 spin_lock_irqsave(&bmp->lock, flags); in msi_bitmap_reserve_hwirq()
60 bitmap_allocate_region(bmp->bitmap, hwirq, 0); in msi_bitmap_reserve_hwirq()
61 spin_unlock_irqrestore(&bmp->lock, flags); in msi_bitmap_reserve_hwirq()
75 int msi_bitmap_reserve_dt_hwirqs(struct msi_bitmap *bmp) in msi_bitmap_reserve_dt_hwirqs() argument
80 if (!bmp->of_node) in msi_bitmap_reserve_dt_hwirqs()
83 p = of_get_property(bmp->of_node, "msi-available-ranges", &len); in msi_bitmap_reserve_dt_hwirqs()
86 "found on %pOF\n", bmp->of_node); in msi_bitmap_reserve_dt_hwirqs()
92 " property on %pOF\n", bmp->of_node); in msi_bitmap_reserve_dt_hwirqs()
96 bitmap_allocate_region(bmp->bitmap, 0, get_count_order(bmp->irq_count)); in msi_bitmap_reserve_dt_hwirqs()
98 spin_lock(&bmp->lock); in msi_bitmap_reserve_dt_hwirqs()
104 bitmap_release_region(bmp->bitmap, *p + j, 0); in msi_bitmap_reserve_dt_hwirqs()
107 spin_unlock(&bmp->lock); in msi_bitmap_reserve_dt_hwirqs()
112 int __ref msi_bitmap_alloc(struct msi_bitmap *bmp, unsigned int irq_count, in msi_bitmap_alloc() argument
123 bmp->bitmap_from_slab = slab_is_available(); in msi_bitmap_alloc()
124 if (bmp->bitmap_from_slab) in msi_bitmap_alloc()
125 bmp->bitmap = kzalloc(size, GFP_KERNEL); in msi_bitmap_alloc()
127 bmp->bitmap = memblock_alloc_or_panic(size, SMP_CACHE_BYTES); in msi_bitmap_alloc()
129 kmemleak_not_leak(bmp->bitmap); in msi_bitmap_alloc()
132 if (!bmp->bitmap) { in msi_bitmap_alloc()
138 spin_lock_init(&bmp->lock); in msi_bitmap_alloc()
139 bmp->of_node = of_node_get(of_node); in msi_bitmap_alloc()
140 bmp->irq_count = irq_count; in msi_bitmap_alloc()
145 void msi_bitmap_free(struct msi_bitmap *bmp) in msi_bitmap_free() argument
147 if (bmp->bitmap_from_slab) in msi_bitmap_free()
148 kfree(bmp->bitmap); in msi_bitmap_free()
149 of_node_put(bmp->of_node); in msi_bitmap_free()
150 bmp->bitmap = NULL; in msi_bitmap_free()
157 struct msi_bitmap bmp; in test_basics() local
161 WARN_ON(msi_bitmap_alloc(&bmp, 0, NULL) == 0); in test_basics()
164 WARN_ON(msi_bitmap_alloc(&bmp, size, NULL)); in test_basics()
167 WARN_ON(bitmap_find_free_region(bmp.bitmap, size, get_count_order(size))); in test_basics()
168 bitmap_release_region(bmp.bitmap, 0, get_count_order(size)); in test_basics()
171 WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp) <= 0); in test_basics()
174 WARN_ON(bitmap_find_free_region(bmp.bitmap, size, get_count_order(size))); in test_basics()
175 bitmap_release_region(bmp.bitmap, 0, get_count_order(size)); in test_basics()
179 WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) < 0); in test_basics()
181 WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) >= 0); in test_basics()
184 WARN_ON(bitmap_find_free_region(bmp.bitmap, size, 0) >= 0); in test_basics()
187 msi_bitmap_free_hwirqs(&bmp, size / 2, 1); in test_basics()
188 WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) != size / 2); in test_basics()
191 msi_bitmap_free_hwirqs(&bmp, 3, size - 3); in test_basics()
194 rc = msi_bitmap_alloc_hwirqs(&bmp, 2); in test_basics()
196 rc = msi_bitmap_alloc_hwirqs(&bmp, 4); in test_basics()
198 rc = msi_bitmap_alloc_hwirqs(&bmp, 8); in test_basics()
200 rc = msi_bitmap_alloc_hwirqs(&bmp, 9); in test_basics()
202 rc = msi_bitmap_alloc_hwirqs(&bmp, 3); in test_basics()
204 rc = msi_bitmap_alloc_hwirqs(&bmp, 7); in test_basics()
206 rc = msi_bitmap_alloc_hwirqs(&bmp, 121); in test_basics()
209 msi_bitmap_free(&bmp); in test_basics()
212 WARN_ON(bmp.bitmap != NULL); in test_basics()
223 struct msi_bitmap bmp; in test_of_node() local
232 WARN_ON(msi_bitmap_alloc(&bmp, SIZE_EXPECTED, &of_node)); in test_of_node()
235 WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp) <= 0); in test_of_node()
238 WARN_ON(bitmap_find_free_region(bmp.bitmap, SIZE_EXPECTED, in test_of_node()
240 bitmap_release_region(bmp.bitmap, 0, get_count_order(SIZE_EXPECTED)); in test_of_node()
253 WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp)); in test_of_node()
257 WARN_ON(!bitmap_equal(expected, bmp.bitmap, SIZE_EXPECTED)); in test_of_node()
259 msi_bitmap_free(&bmp); in test_of_node()
260 kfree(bmp.bitmap); in test_of_node()