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staging: ion: ion_system_heap implement ION_FLAG_DMA32

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Change-Id: I580b9cc9f256252b16bbb1211a116bf31c9eacd8
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
This commit is contained in:
Jianqun Xu
2021-04-25 09:51:07 +08:00
committed by Tao Huang
parent 781ccbba7a
commit da6f4621d7
1 changed files with 49 additions and 4 deletions
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53
drivers/staging/android/ion/ion_system_heap.c
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@@ -43,14 +43,19 @@ static inline unsigned int order_to_size(int order)
struct ion_system_heap {
struct ion_heap heap;
struct ion_page_pool *pools[NUM_ORDERS];
struct ion_page_pool *dma32_pools[NUM_ORDERS];
};
static struct page *alloc_buffer_page(struct ion_system_heap *heap,
struct ion_buffer *buffer,
unsigned long order)
unsigned long order,
unsigned long flags)
{
struct ion_page_pool *pool = heap->pools[order_to_index(order)];
if (flags & ION_FLAG_DMA32)
pool = heap->dma32_pools[order_to_index(order)];
return ion_page_pool_alloc(pool);
}
@@ -74,7 +79,8 @@ static void free_buffer_page(struct ion_system_heap *heap,
static struct page *alloc_largest_available(struct ion_system_heap *heap,
struct ion_buffer *buffer,
unsigned long size,
unsigned int max_order)
unsigned int max_order,
unsigned long flags)
{
struct page *page;
int i;
@@ -85,7 +91,7 @@ static struct page *alloc_largest_available(struct ion_system_heap *heap,
if (max_order < orders[i])
continue;
page = alloc_buffer_page(heap, buffer, orders[i]);
page = alloc_buffer_page(heap, buffer, orders[i], flags);
if (!page)
continue;
@@ -127,7 +133,7 @@ static int ion_system_heap_allocate(struct ion_heap *heap,
i = 0;
while (size_remaining > 0) {
page = alloc_largest_available(sys_heap, buffer, size_remaining,
max_order);
max_order, flags);
if (!page)
goto free_pages;
@@ -286,6 +292,17 @@ static int ion_system_heap_debug_show(struct ion_heap *heap, struct seq_file *s,
pool->low_count, pool->order,
(PAGE_SIZE << pool->order) * pool->low_count);
}
seq_puts(s, "dma32 pools\n");
for (i = 0; i < NUM_ORDERS; i++) {
pool = sys_heap->dma32_pools[i];
seq_printf(s, "%d order %u highmem pages %lu total\n",
pool->high_count, pool->order,
(PAGE_SIZE << pool->order) * pool->high_count);
seq_printf(s, "%d order %u lowmem pages %lu total\n",
pool->low_count, pool->order,
(PAGE_SIZE << pool->order) * pool->low_count);
}
return 0;
}
@@ -322,6 +339,29 @@ err_create_pool:
return -ENOMEM;
}
static int ion_system_heap_create_dma32_pools(struct ion_page_pool **pools)
{
int i;
for (i = 0; i < NUM_ORDERS; i++) {
struct ion_page_pool *pool;
gfp_t gfp_flags = low_order_gfp_flags;
if (orders[i] > 4)
gfp_flags = high_order_gfp_flags;
pool = ion_page_pool_create(gfp_flags | GFP_DMA32, orders[i]);
if (!pool)
goto err_create_pool;
pools[i] = pool;
}
return 0;
err_create_pool:
ion_system_heap_destroy_pools(pools);
return -ENOMEM;
}
static struct ion_heap *__ion_system_heap_create(void)
{
struct ion_system_heap *heap;
@@ -336,9 +376,14 @@ static struct ion_heap *__ion_system_heap_create(void)
if (ion_system_heap_create_pools(heap->pools))
goto free_heap;
if (ion_system_heap_create_dma32_pools(heap->dma32_pools))
goto free_dma32_heap;
heap->heap.debug_show = ion_system_heap_debug_show;
return &heap->heap;
free_dma32_heap:
ion_system_heap_destroy_pools(heap->pools);
free_heap:
kfree(heap);
return ERR_PTR(-ENOMEM);