Function report |
Source Code:kernel\dma\mapping.c |
Create Date:2022-07-28 10:32:41 |
| Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
| home page | Tree |
| Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:dma_get_required_mask
Proto:u64 dma_get_required_mask(struct device *dev)
Type:u64
Parameter:
| Type | Parameter | Name |
|---|---|---|
| struct device * | dev |
| 245 | ops = get_dma_ops(dev) |
| 247 | If dma_is_direct(ops) Then Return dma_direct_get_required_mask(dev) |
| 249 | If get_required_mask Then Return get_required_mask(dev) |
| 260 | Return DMA_BIT_MASK(32) |
| Name | Describe |
|---|---|
| dma_addressing_limited | dma_addressing_limited - return if the device is addressing limited*@dev: device to check* Return %true if the devices DMA mask is too small to address all memory in* the system, else %false. Lack of addressing bits is the prime reason for |
| Source code conversion tool public plug-in interface | X |
|---|---|
| Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion |