On Wed, Dec 06, 2023 at 03:12:55PM -0500, Frank Li wrote:
> Fixed a kernel dump when access edma3 registers.
>
> [ 1.517547] SError Interrupt on CPU1, code 0x00000000bf000002 -- SError
> [ 1.517556] CPU: 1 PID: 59 Comm: kworker/u8:2 Not tainted 6.7.0-rc3-next-20231129-dirty #3
> [ 1.517564] Hardware name: Freescale i.MX8QM MEK (DT)
> [ 1.517570] Workqueue: events_unbound deferred_probe_work_func
> [ 1.517593] pstate: 80000005 (Nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
> [ 1.517601] pc : vsnprintf+0x60/0x770
> [ 1.517612] lr : snprintf+0x58/0x80
> [ 1.517619] sp : ffff800082f0b9e0
> [ 1.517622] x29: ffff800082f0b9e0 x28: ffff8000819a8af8 x27: ffff000801f90080
> [ 1.517632] x26: ffff000801f90510 x25: 0000000000000001 x24: 0000000000000020
> [ 1.517640] x23: 00000000ffffffd8 x22: ffff000800114800 x21: ffff800082f0baf0
> [ 1.517650] x20: ffff000801f90698 x19: ffff000801f906b8 x18: ffffffffffffffff
> [ 1.517659] x17: 6e6f632d616d642e x16: 3030303066396135 x15: ffff800102f0b687
> [ 1.517668] x14: 0000000000000000 x13: 30206e6168632065 x12: 74697277203a7265
> [ 1.517677] x11: 6c6c6f72746e6f63 x10: 2d616d642e303030 x9 : 72656c6c6f72746e
> [ 1.517686] x8 : ffff000800396740 x7 : 205d333337383035 x6 : ffff800082f0baf0
> [ 1.517694] x5 : 00000000ffffffd8 x4 : ffff000800396740 x3 : ffff800082f0ba70
> [ 1.517703] x2 : ffff8000819a8af8 x1 : ffff800082f0baf0 x0 : 0000000000000025
> [ 1.517713] Kernel panic - not syncing: Asynchronous SError Interrupt
> [ 1.517718] CPU: 1 PID: 59 Comm: kworker/u8:2 Not tainted 6.7.0-rc3-next-20231129-dirty #3
> [ 1.517724] Hardware name: Freescale i.MX8QM MEK (DT)
> [ 1.517727] Workqueue: events_unbound deferred_probe_work_func
> [ 1.517736] Call trace:
> [ 1.517739] dump_backtrace+0x90/0xe8
> [ 1.517752] show_stack+0x18/0x24
> [ 1.517761] dump_stack_lvl+0x48/0x60
> [ 1.517771] dump_stack+0x18/0x24
> [ 1.517780] panic+0x36c/0x3ac
> [ 1.517789] nmi_panic+0x48/0x94
> [ 1.517796] arm64_serror_panic+0x6c/0x78
> [ 1.517801] do_serror+0x3c/0x78
> [ 1.517806] el1h_64_error_handler+0x30/0x48
> [ 1.517813] el1h_64_error+0x64/0x68
> [ 1.517819] vsnprintf+0x60/0x770
> [ 1.517827] snprintf+0x58/0x80
> [ 1.517834] fsl_edma_probe+0x2ac/0x830
>
> It is eDMA1 at QM, which have the same register with eDMA3 at qxp.
>
> Fixes: e4d7a330fb7a ("arm64: dts: imx8: add edma[0..3]")
> Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
Hi Frank,
Did you see the fix [1] from Xiaolei? It has landed on Linus' tree.
Shawn
[1] https://lore.kernel.org/all/20231110072531.1957891-1-xiaolei.wang@xxxxxxxxxxxxx/
> ---
> .../boot/dts/freescale/imx8qm-ss-dma.dtsi | 27 +++++++++++++++++++
> 1 file changed, 27 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8qm-ss-dma.dtsi b/arch/arm64/boot/dts/freescale/imx8qm-ss-dma.dtsi
> index 01539df335f8c..5d76b4dee4cef 100644
> --- a/arch/arm64/boot/dts/freescale/imx8qm-ss-dma.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8qm-ss-dma.dtsi
> @@ -44,6 +44,33 @@ can2_lpcg: clock-controller@5acf0000 {
> };
> };
>
> +/* It is eDMA1 in 8QM RM, but 8QXP it is eDMA3 */
> +&edma3 {
> + reg = <0x5a9f0000 0x210000>;
> + dma-channels = <10>;
> + interrupts = <GIC_SPI 424 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 425 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 426 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 427 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 428 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 429 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 430 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 431 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 432 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 433 IRQ_TYPE_LEVEL_HIGH>;
> + power-domains = <&pd IMX_SC_R_DMA_1_CH0>,
> + <&pd IMX_SC_R_DMA_1_CH1>,
> + <&pd IMX_SC_R_DMA_1_CH2>,
> + <&pd IMX_SC_R_DMA_1_CH3>,
> + <&pd IMX_SC_R_DMA_1_CH4>,
> + <&pd IMX_SC_R_DMA_1_CH5>,
> + <&pd IMX_SC_R_DMA_1_CH6>,
> + <&pd IMX_SC_R_DMA_1_CH7>,
> + <&pd IMX_SC_R_DMA_1_CH8>,
> + <&pd IMX_SC_R_DMA_1_CH9>;
> +};
> +
> +/* It is edma0 in 8QM RM, but it is eDMA2 at 8QXP */
> &edma2 {
> reg = <0x5a1f0000 0x170000>;
> #dma-cells = <3>;
> --
> 2.34.1
>
