diff options
Diffstat (limited to 'libhw_cr/rp2040_dma.h')
| -rw-r--r-- | libhw_cr/rp2040_dma.h | 29 |
1 files changed, 15 insertions, 14 deletions
diff --git a/libhw_cr/rp2040_dma.h b/libhw_cr/rp2040_dma.h index c7f5a8f..a6f4ae3 100644 --- a/libhw_cr/rp2040_dma.h +++ b/libhw_cr/rp2040_dma.h @@ -17,6 +17,7 @@ #include <hardware/regs/dreq.h> /* for DREQ_* for use with DMA_CTRL_TREQ_SEL() */ #include <hardware/structs/dma.h> /* for dma_hw, dma_channel_hw_t, DMA_NUM_CHANNELS */ +#include <libmisc/assert.h> #include <libmisc/macro.h> /* for LM_FLOORLOG2() */ /* Borrowed from <hardware/dma.h> *********************************************/ @@ -52,20 +53,20 @@ typedef void (*dmairq_handler_t)(void *arg, enum dmairq irq, uint channel); */ void dmairq_set_and_enable_exclusive_handler(enum dmairq irq, uint channel, dmairq_handler_t fn, void *arg); -#define DMA_CTRL_ENABLE (1<<0) -#define DMA_CTRL_HI_PRIO (1<<1) -#define DMA_CTRL_DATA_SIZE(sz) ((sz)<<2) -#define DMA_CTRL_INCR_READ (1<<4) -#define DMA_CTRL_INCR_WRITE (1<<5) -#define _DMA_CTRL_RING_BITS(b) ((b)<<6) -#define _DMA_CTRL_RING_RD (0) -#define _DMA_CTRL_RING_WR (1<<10) -#define DMA_CTRL_RING(rdwr, bits) (_DMA_CTRL_RING_##rdwr | _DMA_CTRL_RING_BITS(bits)) -#define DMA_CTRL_CHAIN_TO(ch) ((ch)<<11) -#define DMA_CTRL_TREQ_SEL(dreq) ((dreq)<<15) -#define DMA_CTRL_IRQ_QUIET (1<<21) -#define DMA_CTRL_BSWAP (1<<22) -#define DMA_CTRL_SNIFF_EN (1<<23) +#define DMA_CTRL_ENABLE (((uint32_t)1)<<0) +#define DMA_CTRL_HI_PRIO (((uint32_t)1)<<1) +#define DMA_CTRL_DATA_SIZE(sz) (((uint32_t)(sz))<<(2 + static_assert_as_expr((sz) <= 0b11))) +#define DMA_CTRL_INCR_READ (((uint32_t)1)<<4) +#define DMA_CTRL_INCR_WRITE (((uint32_t)1)<<5) +#define _DMA_CTRL_RING_BITS(bitcnt) (((uint32_t)(bitcnt))<<(6 + static_assert_as_expr((bitcnt) <= 0b1111))) +#define _DMA_CTRL_RING_RD ((uint32_t)0) +#define _DMA_CTRL_RING_WR (((uint32_t)1)<<10) +#define DMA_CTRL_RING(rdwr, bitcnt) (_DMA_CTRL_RING_##rdwr | _DMA_CTRL_RING_BITS(bitcnt)) +#define DMA_CTRL_CHAIN_TO(ch) (((uint32_t)(ch))<<11) +#define DMA_CTRL_TREQ_SEL(dreq) (((uint32_t)(dreq))<<(15 + static_assert_as_expr((dreq) <= 0b111111))) +#define DMA_CTRL_IRQ_QUIET (((uint32_t)1)<<21) +#define DMA_CTRL_BSWAP (((uint32_t)1)<<22) +#define DMA_CTRL_SNIFF_EN (((uint32_t)1)<<23) /* | elem | val | name */ #define READ_ADDR /*|*/volatile const void/*|*/ * /*|*/read_addr |