Documented in 1 files:
Defined in 1 files as a prototype:
Defined in 2 files as a function:
- include/linux/dma-map-ops.h, line 138 (as a function)
- kernel/dma/contiguous.c, line 413 (as a function)
Referenced in 3 files:
- drivers/iommu/dma-iommu.c, line 1630
- kernel/dma/direct.c, line 127
- kernel/dma/ops_helpers.c, line 69
Smatch caller information:
kernel/dma/ops_helpers.c dma_common_alloc_pages() -> dma_alloc_contiguous()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | dev | 4096-ptr_max |
| PARAM_VALUE | 0 | dev->cma_area->available_count | 0-s64max |
| PARAM_VALUE | 0 | dev->cma_area->nranges | s32min-s32max |
| PARAM_VALUE | 0 | dev->coherent_dma_mask | 1-u64max |
| PARAM_VALUE | 0 | dev->flags | 4096-ptr_max |
| PARAM_VALUE | 0 | dev->iommu_group->default_domain | 0-s64max |
| PARAM_VALUE | 1 | size | 0,4096-u64max |
| PARAM_VALUE | 2 | gfp | 0,64-u32max |
| CAPPED_DATA | 2 | gfp | 1 |
| DATA_SOURCE | 0 | dev | $0 |
| DATA_SOURCE | 1 | size | $1 |
| DATA_SOURCE | 2 | gfp | $4 |
| BIT_INFO | 1 | size | 0x0,0xfffffffffffff000 |
| BIT_INFO | 1 | size | 0x0,0xfffffffffffff000 |
| BIT_INFO | 2 | gfp | 0x0,0xfffbfff8 |
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| HOST_DATA | 1 | size | 0,4096-12884905984[c] |
| USER_DATA | 1 | size | 0,4096-4294967296[c] |
| NO_OVERFLOW_SIMPLE | 0 | dev->cma_area->available_count | |
| UNITS | 0 | dev | unit_byte |
| UNITS | 1 | size | unit_byte |
drivers/iommu/dma-iommu.c iommu_dma_alloc_pages() -> dma_alloc_contiguous()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | dev | 4096-ptr_max |
| PARAM_VALUE | 0 | dev->dma_mem | 0 |
| PARAM_VALUE | 0 | dev->flags | 4096-ptr_max |
| PARAM_VALUE | 1 | size | 0,4096-u64max |
| PARAM_VALUE | 2 | gfp | 0,256-u32max |
| DATA_SOURCE | 0 | dev | $0 |
| DATA_SOURCE | 2 | gfp | $3 |
| BIT_INFO | 1 | size | 0x0,0xfffffffffffff000 |
| BIT_INFO | 1 | size | 0x0,0xfffffffffffff000 |
| BIT_INFO | 2 | gfp | 0x100,0xffffffff |
kernel/dma/direct.c __dma_direct_alloc_pages() -> dma_alloc_contiguous()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | dev | 4096-ptr_max |
| PARAM_VALUE | 0 | dev->cma_area->available_count | 0-s64max |
| PARAM_VALUE | 0 | dev->cma_area->nranges | s32min-s32max |
| PARAM_VALUE | 0 | dev->dma_io_tlb_mem | 4096-ptr_max |
| PARAM_VALUE | 0 | dev->dma_io_tlb_mem->for_alloc | 0 |
| PARAM_VALUE | 0 | dev->dma_range_map | 0,4096-ptr_max |
| PARAM_VALUE | 0 | dev->flags | 4096-ptr_max |
| PARAM_VALUE | 1 | size | 0,4096-u64max |
| DATA_SOURCE | 0 | dev | $0 |
| DATA_SOURCE | 1 | size | $1 |
| DATA_SOURCE | 2 | gfp | $2 [m] |
| BIT_INFO | 1 | size | 0x0,0xfffffffffffff000 |
| BIT_INFO | 1 | size | 0x0,0xfffffffffffff000 |
| BIT_INFO | 2 | gfp | 0x0,0xfffbffff |
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| HOST_DATA | 1 | size | 0,4096-12884905984[c] |
| USER_DATA | 1 | size | 0,4096-4294967296[c] |
| NO_OVERFLOW_SIMPLE | 0 | dev->cma_area->available_count | |
| UNITS | 0 | dev | unit_byte |
| UNITS | 1 | size | unit_byte |