8727c174b0
- limit maximum segment size to 2048 bytes. Although dwmmc supports a buffer fragment with a maximum length of 4095 bytes, use the nearest lower power of two as the maximum fragment size. Otherwise, busdma create excessive buffer fragments. - fix off by one error in computation of the maximum data transfer length. - in addition, reserve two DMA descriptors that can be used by busdma bouncing. The beginning or end of the buffer can be misaligned. - Don’t ignore errors passed to bus_dmamap_load() callback function. - In theory, a DMA engine may be running at time when next dma descriptor is constructed. Create a full DMA descriptor before OWN bit is set. MFC after: 2 weeks |
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| .. | ||
| dwmmc_altera.c | ||
| dwmmc_hisi.c | ||
| dwmmc_reg.h | ||
| dwmmc_rockchip.c | ||
| dwmmc_samsung.c | ||
| dwmmc_var.h | ||
| dwmmc.c | ||