diff options
| author | Keith Packard <keithp@keithp.com> | 2016-06-27 17:26:19 -0700 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2016-06-29 19:17:45 -0700 |
| commit | f418584d4d225827e08f56de86055eb3f074f8d1 (patch) | |
| tree | 755f010881cf2d80b75fdae5cbd6b60302a3b232 /src | |
| parent | 2e60cd22f6789c94343e6432822cedab028dc1ba (diff) | |
altos: Add STM DMA debugging
This provides a command that shows current DMA operations when
compiled with -DDEBUG=1. Without that, this patch has no effect.
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/stm/ao_dma_stm.c | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/src/stm/ao_dma_stm.c b/src/stm/ao_dma_stm.c index 93b7fb47..0135de48 100644 --- a/src/stm/ao_dma_stm.c +++ b/src/stm/ao_dma_stm.c @@ -113,6 +113,40 @@ ao_dma_alloc(uint8_t index) ao_dma_allocated[index] = 1; } +#if DEBUG +void +ao_dma_dump_cmd(void) +{ + int i; + + ao_arch_critical( + if (ao_dma_active++ == 0) + stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_DMA1EN); + ); + printf ("isr %08x ifcr%08x\n", stm_dma.isr, stm_dma.ifcr); + for (i = 0; i < NUM_DMA; i++) + printf("%d: done %d allocated %d mutex %2d ccr %04x cndtr %04x cpar %08x cmar %08x isr %08x\n", + i, + ao_dma_done[i], + ao_dma_allocated[i], + ao_dma_mutex[i], + stm_dma.channel[i].ccr, + stm_dma.channel[i].cndtr, + stm_dma.channel[i].cpar, + stm_dma.channel[i].cmar, + ao_dma_config[i].isr); + ao_arch_critical( + if (--ao_dma_active == 0) + stm_rcc.ahbenr &= ~(1 << STM_RCC_AHBENR_DMA1EN); + ); +} + +static const struct ao_cmds ao_dma_cmds[] = { + { ao_dma_dump_cmd, "D\0Dump DMA status" }, + { 0, NULL } +}; +#endif + void ao_dma_init(void) { @@ -124,5 +158,7 @@ ao_dma_init(void) ao_dma_allocated[index] = 0; ao_dma_mutex[index] = 0; } - +#if DEBUG + ao_cmd_register(&ao_dma_cmds[0]); +#endif } |