Add support for IPC and DSP dumps for AMD platforms.

Signed-off-by: V sujith kumar Reddy Vsujithkumar.Reddy@amd.com --- sound/soc/sof/amd/Kconfig | 1 + sound/soc/sof/amd/acp-common.c | 108 +++++++++++++++++++++++++++++++++ sound/soc/sof/amd/acp-ipc.c | 13 ++++ sound/soc/sof/amd/acp.h | 6 ++ 4 files changed, 128 insertions(+)

diff --git a/sound/soc/sof/amd/Kconfig b/sound/soc/sof/amd/Kconfig index a305ea6efea9..1cb92d6030e3 100644 --- a/sound/soc/sof/amd/Kconfig +++ b/sound/soc/sof/amd/Kconfig @@ -20,6 +20,7 @@ config SND_SOC_SOF_AMD_COMMON select SND_SOC_SOF_IPC3 select SND_SOC_SOF_PCI_DEV select SND_AMD_ACP_CONFIG + select SND_SOC_SOF_XTENSA select SND_SOC_ACPI if ACPI help This option is not user-selectable but automatically handled by diff --git a/sound/soc/sof/amd/acp-common.c b/sound/soc/sof/amd/acp-common.c index 150e042e4039..bd6c1b198736 100644 --- a/sound/soc/sof/amd/acp-common.c +++ b/sound/soc/sof/amd/acp-common.c @@ -16,6 +16,7 @@ #include "../sof-audio.h" #include "acp.h" #include "acp-dsp-offset.h" +#include <sound/sof/xtensa.h>

int acp_dai_probe(struct snd_soc_dai *dai) { @@ -33,6 +34,107 @@ int acp_dai_probe(struct snd_soc_dai *dai) } EXPORT_SYMBOL_NS(acp_dai_probe, SND_SOC_SOF_AMD_COMMON);

+/** + * amd_sof_ipc_dump() - This function is called when IPC tx times out. + * @sdev: SOF device. + */ +void amd_sof_ipc_dump(struct snd_sof_dev *sdev) +{ + const struct sof_amd_acp_desc *desc = get_chip_info(sdev->pdata); + u32 base = desc->dsp_intr_base; + u32 dsp_msg_write = sdev->debug_box.offset + + offsetof(struct scratch_ipc_conf, sof_dsp_msg_write); + u32 dsp_ack_write = sdev->debug_box.offset + + offsetof(struct scratch_ipc_conf, sof_dsp_ack_write); + u32 host_msg_write = sdev->debug_box.offset + + offsetof(struct scratch_ipc_conf, sof_host_msg_write); + u32 host_ack_write = sdev->debug_box.offset + + offsetof(struct scratch_ipc_conf, sof_host_ack_write); + u32 dsp_msg, dsp_ack, host_msg, host_ack, irq_stat; + + dsp_msg = snd_sof_dsp_read(sdev, ACP_DSP_BAR, ACP_SCRATCH_REG_0 + dsp_msg_write); + dsp_ack = snd_sof_dsp_read(sdev, ACP_DSP_BAR, ACP_SCRATCH_REG_0 + dsp_ack_write); + host_msg = snd_sof_dsp_read(sdev, ACP_DSP_BAR, ACP_SCRATCH_REG_0 + host_msg_write); + host_ack = snd_sof_dsp_read(sdev, ACP_DSP_BAR, ACP_SCRATCH_REG_0 + host_ack_write); + irq_stat = snd_sof_dsp_read(sdev, ACP_DSP_BAR, base + DSP_SW_INTR_STAT_OFFSET); + + dev_err(sdev->dev, + "dsp_msg = %#x dsp_ack = %#x host_msg = %#x host_ack = %#x irq_stat = %#x\n", + dsp_msg, dsp_ack, host_msg, host_ack, irq_stat); +} + +/** + * amd_get_registers() - This function is called in case of DSP oops + * in order to gather information about the registers, filename and + * linenumber and stack. + * @sdev: SOF device. + * @xoops: Stores information about registers. + * @panic_info: Stores information about filename and line number. + * @stack: Stores the stack dump. + * @stack_words: Size of the stack dump. + */ +static void amd_get_registers(struct snd_sof_dev *sdev, + struct sof_ipc_dsp_oops_xtensa *xoops, + struct sof_ipc_panic_info *panic_info, + u32 *stack, size_t stack_words) +{ + u32 offset = sdev->dsp_oops_offset; + + /* first read registers */ + acp_mailbox_read(sdev, offset, xoops, sizeof(*xoops)); + + /* then get panic info */ + if (xoops->arch_hdr.totalsize > EXCEPT_MAX_HDR_SIZE) { + dev_err(sdev->dev, "invalid header size 0x%x. FW oops is bogus\n", + xoops->arch_hdr.totalsize); + return; + } + + offset += xoops->arch_hdr.totalsize; + acp_mailbox_read(sdev, offset, panic_info, sizeof(*panic_info)); + + /* then get the stack */ + offset += sizeof(*panic_info); + acp_mailbox_read(sdev, offset, stack, stack_words * sizeof(u32)); +} + +/** + * amd_sof_dump() - This function is called when a panic message is + * received from the firmware. + * @sdev: SOF device. + * @flags: parameter not used but required by ops prototype + */ +void amd_sof_dump(struct snd_sof_dev *sdev, u32 flags) +{ + struct sof_ipc_dsp_oops_xtensa xoops; + struct sof_ipc_panic_info panic_info; + u32 stack[AMD_STACK_DUMP_SIZE]; + u32 status; + + /* Get information about the panic status from the debug box area. + * Compute the trace point based on the status. + */ + if (sdev->dsp_oops_offset > sdev->debug_box.offset) { + acp_mailbox_read(sdev, sdev->debug_box.offset, &status, sizeof(u32)); + } else { + /* Read DSP Panic status from dsp_box. + * As window information for exception box offset and size is not available + * before FW_READY + */ + acp_mailbox_read(sdev, sdev->dsp_box.offset, &status, sizeof(u32)); + sdev->dsp_oops_offset = sdev->dsp_box.offset + sizeof(status); + } + + /* Get information about the registers, the filename and line + * number and the stack. + */ + amd_get_registers(sdev, &xoops, &panic_info, stack, AMD_STACK_DUMP_SIZE); + + /* Print the information to the console */ + sof_print_oops_and_stack(sdev, KERN_ERR, status, status, &xoops, + &panic_info, stack, AMD_STACK_DUMP_SIZE); +} + struct snd_soc_acpi_mach *amd_sof_machine_select(struct snd_sof_dev *sdev) { struct snd_sof_pdata *sof_pdata = sdev->pdata; @@ -104,9 +206,15 @@ struct snd_sof_dsp_ops sof_acp_common_ops = { /* PM */ .suspend = amd_sof_acp_suspend, .resume = amd_sof_acp_resume, + + .ipc_dump = amd_sof_ipc_dump, + .dbg_dump = amd_sof_dump, + .debugfs_add_region_item = snd_sof_debugfs_add_region_item_iomem, + .dsp_arch_ops = &sof_xtensa_arch_ops, }; EXPORT_SYMBOL_NS(sof_acp_common_ops, SND_SOC_SOF_AMD_COMMON);

MODULE_IMPORT_NS(SND_SOC_SOF_AMD_COMMON); +MODULE_IMPORT_NS(SND_SOC_SOF_XTENSA); MODULE_DESCRIPTION("ACP SOF COMMON Driver"); MODULE_LICENSE("Dual BSD/GPL"); diff --git a/sound/soc/sof/amd/acp-ipc.c b/sound/soc/sof/amd/acp-ipc.c index dd6e53c63407..5a02753c4610 100644 --- a/sound/soc/sof/amd/acp-ipc.c +++ b/sound/soc/sof/amd/acp-ipc.c @@ -154,8 +154,15 @@ irqreturn_t acp_sof_ipc_irq_thread(int irq, void *context) offsetof(struct scratch_ipc_conf, sof_dsp_ack_write); bool ipc_irq = false; int dsp_msg, dsp_ack; + unsigned int status;

if (sdev->first_boot && sdev->fw_state != SOF_FW_BOOT_COMPLETE) { + acp_mailbox_read(sdev, sdev->dsp_box.offset, &status, sizeof(status)); + if ((status & SOF_IPC_PANIC_MAGIC_MASK) == SOF_IPC_PANIC_MAGIC) { + snd_sof_dsp_panic(sdev, sdev->dsp_box.offset + sizeof(status), + true); + return IRQ_HANDLED; + } snd_sof_ipc_msgs_rx(sdev); acp_dsp_ipc_host_done(sdev); return IRQ_HANDLED; @@ -180,6 +187,12 @@ irqreturn_t acp_sof_ipc_irq_thread(int irq, void *context) ipc_irq = true; }

+ acp_mailbox_read(sdev, sdev->debug_box.offset, &status, sizeof(u32)); + if ((status & SOF_IPC_PANIC_MAGIC_MASK) == SOF_IPC_PANIC_MAGIC) { + snd_sof_dsp_panic(sdev, sdev->dsp_oops_offset, true); + return IRQ_HANDLED; + } + if (!ipc_irq) dev_dbg_ratelimited(sdev->dev, "nothing to do in IPC IRQ thread\n");

diff --git a/sound/soc/sof/amd/acp.h b/sound/soc/sof/amd/acp.h index 76ad963faec1..09e16ef8afa0 100644 --- a/sound/soc/sof/amd/acp.h +++ b/sound/soc/sof/amd/acp.h @@ -69,6 +69,9 @@ #define BOX_SIZE_512 0x200 #define BOX_SIZE_1024 0x400

+#define EXCEPT_MAX_HDR_SIZE 0x400 +#define AMD_STACK_DUMP_SIZE 32 + enum clock_source { ACP_CLOCK_96M = 0, ACP_CLOCK_48M, @@ -254,6 +257,9 @@ int acp_sof_trace_release(struct snd_sof_dev *sdev); int amd_sof_acp_suspend(struct snd_sof_dev *sdev, u32 target_state); int amd_sof_acp_resume(struct snd_sof_dev *sdev);

+void amd_sof_ipc_dump(struct snd_sof_dev *sdev); +void amd_sof_dump(struct snd_sof_dev *sdev, u32 flags); + static inline const struct sof_amd_acp_desc *get_chip_info(struct snd_sof_pdata *pdata) { const struct sof_dev_desc *desc = pdata->desc;