On Tue, Oct 03, 2023 at 10:52:09AM -0400, Frank Li wrote: > Change from v5 to v6 > - Use case 0 and case sizeof(u32) instead of default Ping. I fixed build issue. > > Change from v4 to v5 > - There are still some discussion about 64bit register access. > Drop 64 register support and use sperate patch to enable 64bit register > support in future. > > Change from v3 to v4 > - Fix build warning > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot <lkp@xxxxxxxxx> > | Closes: https://lore.kernel.org/oe-kbuild-all/202309210500.owiirl4c-lkp@xxxxxxxxx/ > > Change from v2 to v3 > - Fixed sparse build warning > - improve debugfs_create_regset32 and use debugfs_create_regset() to dump > all registers > > Change from v1 to v2 > - Fixed tcd trace issue, data need be saved firstly. > > === Trace === > > echo 1 >/sys/kernel/debug/tracing/tracing_on > echo 1 >/sys/kernel/debug/tracing/events/fsl_edma/enable > > Run any dma test > ... > > cat /sys/kernel/debug/tracing/trace > > uart_testapp_11-448 [000] d..1. 69.185019: edma_fill_tcd: > ==== TCD ===== > saddr: 0x831ee020 > soff: 0x8000 > attr: 0xffff > nbytes: 0xfba40000 > slast: 0x00000000 > daddr: 0x8aaa4800 > doff: 0x0001 > citer: 0x0800 > dlast: 0xfba40020 > csr: 0x0052 > biter: 0x0800 > > uart_testapp_11-448 [000] d..2. 69.185022: edma_writew: offset 0001803c: value 00000000 > uart_testapp_11-448 [000] d..2. 69.185023: edma_writel: offset 00018020: value 4259001c > uart_testapp_11-448 [000] d..2. 69.185024: edma_writel: offset 00018030: value 8aaa4000 > > === DebugFS === > > cat /sys/kernel/debug/dmaengine/42000000.dma-controller/42000000.dma-controller-CH00/ch_sbr > 0x00208003 > > Frank Li (3): > debugfs_create_regset32() support 8/16 bit width registers > dmaengine: fsl-emda: add debugfs support > dmaengine: fsl-edma: add trace event support > > drivers/dma/Makefile | 7 +- > drivers/dma/fsl-edma-common.c | 2 + > drivers/dma/fsl-edma-common.h | 37 +++++- > drivers/dma/fsl-edma-debugfs.c | 200 +++++++++++++++++++++++++++++++++ > drivers/dma/fsl-edma-main.c | 2 + > drivers/dma/fsl-edma-trace.c | 4 + > drivers/dma/fsl-edma-trace.h | 134 ++++++++++++++++++++++ > fs/debugfs/file.c | 54 ++++++--- > include/linux/debugfs.h | 17 ++- > 9 files changed, 429 insertions(+), 28 deletions(-) > create mode 100644 drivers/dma/fsl-edma-debugfs.c > create mode 100644 drivers/dma/fsl-edma-trace.c > create mode 100644 drivers/dma/fsl-edma-trace.h > > -- > 2.34.1 >
