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@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202309210500.owiirl4c-lkp@intel.com/
>
> 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
>