Lines Matching defs:pool
2 /* TI K3 CPPI5 descriptors pool API
15 #include "k3-cppi-desc-pool.h"
27 void k3_cppi_desc_pool_destroy(struct k3_cppi_desc_pool *pool)
29 if (!pool)
32 WARN(gen_pool_size(pool->gen_pool) != gen_pool_avail(pool->gen_pool),
34 gen_pool_size(pool->gen_pool),
35 gen_pool_avail(pool->gen_pool));
36 if (pool->cpumem)
37 dma_free_coherent(pool->dev, pool->mem_size, pool->cpumem,
38 pool->dma_addr);
40 gen_pool_destroy(pool->gen_pool); /* frees pool->name */
49 struct k3_cppi_desc_pool *pool;
53 pool = devm_kzalloc(dev, sizeof(*pool), GFP_KERNEL);
54 if (!pool)
57 pool->dev = dev;
58 pool->desc_size = roundup_pow_of_two(desc_size);
59 pool->num_desc = size;
60 pool->mem_size = pool->num_desc * pool->desc_size;
62 pool_name = kstrdup_const(name ? name : dev_name(pool->dev),
67 pool->gen_pool = gen_pool_create(ilog2(pool->desc_size), -1);
68 if (!pool->gen_pool) {
70 dev_err(pool->dev, "pool create failed %d\n", ret);
75 pool->gen_pool->name = pool_name;
77 pool->cpumem = dma_alloc_coherent(pool->dev, pool->mem_size,
78 &pool->dma_addr, GFP_KERNEL);
80 if (!pool->cpumem)
83 ret = gen_pool_add_virt(pool->gen_pool, (unsigned long)pool->cpumem,
84 (phys_addr_t)pool->dma_addr, pool->mem_size,
87 dev_err(pool->dev, "pool add failed %d\n", ret);
91 return pool;
94 dma_free_coherent(pool->dev, pool->mem_size, pool->cpumem,
95 pool->dma_addr);
97 gen_pool_destroy(pool->gen_pool); /* frees pool->name */
99 devm_kfree(pool->dev, pool);
104 dma_addr_t k3_cppi_desc_pool_virt2dma(struct k3_cppi_desc_pool *pool,
107 return addr ? pool->dma_addr + (addr - pool->cpumem) : 0;
111 void *k3_cppi_desc_pool_dma2virt(struct k3_cppi_desc_pool *pool, dma_addr_t dma)
113 return dma ? pool->cpumem + (dma - pool->dma_addr) : NULL;
117 void *k3_cppi_desc_pool_alloc(struct k3_cppi_desc_pool *pool)
119 return (void *)gen_pool_alloc(pool->gen_pool, pool->desc_size);
123 void k3_cppi_desc_pool_free(struct k3_cppi_desc_pool *pool, void *addr)
125 gen_pool_free(pool->gen_pool, (unsigned long)addr, pool->desc_size);
129 size_t k3_cppi_desc_pool_avail(struct k3_cppi_desc_pool *pool)
131 return gen_pool_avail(pool->gen_pool) / pool->desc_size;
136 MODULE_DESCRIPTION("TI K3 CPPI5 descriptors pool API");