[PATCH v3 13/14] ASoC: SOF: Add xtensa support

Pierre-Louis Bossart
2018-12-11T21:23:17Z

Add common directory for xtensa architecture

Signed-off-by: Pan Xiuli <xiuli.pan@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
include/sound/sof/xtensa.h | 44 ++++++++++
sound/soc/sof/xtensa/Kconfig | 3 +
sound/soc/sof/xtensa/Makefile | 5 ++
sound/soc/sof/xtensa/core.c | 152 ++++++++++++++++++++++++++++++++++
4 files changed, 204 insertions(+)
create mode 100644 include/sound/sof/xtensa.h
create mode 100644 sound/soc/sof/xtensa/Kconfig
create mode 100644 sound/soc/sof/xtensa/Makefile
create mode 100644 sound/soc/sof/xtensa/core.c

diff --git a/include/sound/sof/xtensa.h b/include/sound/sof/xtensa.h
new file mode 100644
index 000000000000..a7189984000d
--- /dev/null
+++ b/include/sound/sof/xtensa.h
@@ -0,0 +1,44 @@
+/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */
+/*
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * Copyright(c) 2018 Intel Corporation. All rights reserved.
+ */
+
+#ifndef __INCLUDE_SOUND_SOF_XTENSA_H__
+#define __INCLUDE_SOUND_SOF_XTENSA_H__
+
+#include <sound/sof/header.h>
+
+/*
+ * Architecture specific debug
+ */
+
+/* Xtensa Firmware Oops data */
+struct sof_ipc_dsp_oops_xtensa {
+ struct sof_ipc_hdr hdr;
+ uint32_t exccause;
+ uint32_t excvaddr;
+ uint32_t ps;
+ uint32_t epc1;
+ uint32_t epc2;
+ uint32_t epc3;
+ uint32_t epc4;
+ uint32_t epc5;
+ uint32_t epc6;
+ uint32_t epc7;
+ uint32_t eps2;
+ uint32_t eps3;
+ uint32_t eps4;
+ uint32_t eps5;
+ uint32_t eps6;
+ uint32_t eps7;
+ uint32_t depc;
+ uint32_t intenable;
+ uint32_t interrupt;
+ uint32_t sar;
+ uint32_t stack;
+} __packed;
+
+#endif
diff --git a/sound/soc/sof/xtensa/Kconfig b/sound/soc/sof/xtensa/Kconfig
new file mode 100644
index 000000000000..f66f17bb0335
--- /dev/null
+++ b/sound/soc/sof/xtensa/Kconfig
@@ -0,0 +1,3 @@
+config SND_SOC_SOF_XTENSA
+ tristate
+
diff --git a/sound/soc/sof/xtensa/Makefile b/sound/soc/sof/xtensa/Makefile
new file mode 100644
index 000000000000..cc89c7472a38
--- /dev/null
+++ b/sound/soc/sof/xtensa/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
+
+snd-sof-xtensa-dsp-objs := core.o
+
+obj-$(CONFIG_SND_SOC_SOF_XTENSA) += snd-sof-xtensa-dsp.o
diff --git a/sound/soc/sof/xtensa/core.c b/sound/soc/sof/xtensa/core.c
new file mode 100644
index 000000000000..8bc3b782c16e
--- /dev/null
+++ b/sound/soc/sof/xtensa/core.c
@@ -0,0 +1,152 @@
+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
+//
+// This file is provided under a dual BSD/GPLv2 license. When using or
+// redistributing this file, you may do so under either license.
+//
+// Copyright(c) 2018 Intel Corporation. All rights reserved.
+//
+// Author: Pan Xiuli <xiuli.pan@linux.intel.com>
+//
+
+#include <sound/sof.h>
+#include <sound/sof/xtensa.h>
+#include "../sof-priv.h"
+
+struct xtensa_exception_cause {
+ u32 id;
+ const char *msg;
+ const char *description;
+};
+
+/* From 4.4.1.5 table 4-64 Exception Causes of
+ * Xtensa Instruction Set Architecture (ISA) Reference Manual
+ */
+static const struct xtensa_exception_cause xtensa_exception_causes[] = {
+ {0, "IllegalInstructionCause", "Illegal instruction"},
+ {1, "SyscallCause", "SYSCALL instruction"},
+ {2, "InstructionFetchErrorCause",
+ "Processor internal physical address or data error during instruction fetch"},
+ {3, "LoadStoreErrorCause",
+ "Processor internal physical address or data error during load or store"},
+ {4, "Level1InterruptCause",
+ "Level-1 interrupt as indicated by set level-1 bits in the INTERRUPT register"},
+ {5, "AllocaCause",
+ "MOVSP instruction, if caller’s registers are not in the register file"},
+ {6, "IntegerDivideByZeroCause",
+ "QUOS, QUOU, REMS, or REMU divisor operand is zero"},
+ {8, "PrivilegedCause",
+ "Attempt to execute a privileged operation when CRING ? 0"},
+ {9, "LoadStoreAlignmentCause", "Load or store to an unaligned address"},
+ {12, "InstrPIFDataErrorCause",
+ "PIF data error during instruction fetch"},
+ {13, "LoadStorePIFDataErrorCause",
+ "Synchronous PIF data error during LoadStore access"},
+ {14, "InstrPIFAddrErrorCause",
+ "PIF address error during instruction fetch"},
+ {15, "LoadStorePIFAddrErrorCause",
+ "Synchronous PIF address error during LoadStore access"},
+ {16, "InstTLBMissCause", "Error during Instruction TLB refill"},
+ {17, "InstTLBMultiHitCause",
+ "Multiple instruction TLB entries matched"},
+ {18, "InstFetchPrivilegeCause",
+ "An instruction fetch referenced a virtual address at a ring level less than CRING"},
+ {20, "InstFetchProhibitedCause",
+ "An instruction fetch referenced a page mapped with an attribute that does not permit instruction fetch"},
+ {24, "LoadStoreTLBMissCause",
+ "Error during TLB refill for a load or store"},
+ {25, "LoadStoreTLBMultiHitCause",
+ "Multiple TLB entries matched for a load or store"},
+ {26, "LoadStorePrivilegeCause",
+ "A load or store referenced a virtual address at a ring level less than CRING"},
+ {28, "LoadProhibitedCause",
+ "A load referenced a page mapped with an attribute that does not permit loads"},
+ {32, "Coprocessor0Disabled",
+ "Coprocessor 0 instruction when cp0 disabled"},
+ {33, "Coprocessor1Disabled",
+ "Coprocessor 1 instruction when cp1 disabled"},
+ {34, "Coprocessor2Disabled",
+ "Coprocessor 2 instruction when cp2 disabled"},
+ {35, "Coprocessor3Disabled",
+ "Coprocessor 3 instruction when cp3 disabled"},
+ {36, "Coprocessor4Disabled",
+ "Coprocessor 4 instruction when cp4 disabled"},
+ {37, "Coprocessor5Disabled",
+ "Coprocessor 5 instruction when cp5 disabled"},
+ {38, "Coprocessor6Disabled",
+ "Coprocessor 6 instruction when cp6 disabled"},
+ {39, "Coprocessor7Disabled",
+ "Coprocessor 7 instruction when cp7 disabled"},
+};
+
+/* only need xtensa atm */
+static void xtensa_dsp_oops(struct snd_sof_dev *sdev, void *oops)
+{
+ struct sof_ipc_dsp_oops_xtensa *xoops = oops;
+ int i;
+
+ dev_err(sdev->dev, "error: DSP Firmware Oops\n");
+ for (i = 0; i < ARRAY_SIZE(xtensa_exception_causes); i++) {
+ if (xtensa_exception_causes[i].id == xoops->exccause) {
+ dev_err(sdev->dev, "error: Exception Cause: %s, %s\n",
+ xtensa_exception_causes[i].msg,
+ xtensa_exception_causes[i].description);
+ }
+ }
+ dev_err(sdev->dev, "EXCCAUSE 0x%8.8x EXCVADDR 0x%8.8x PS 0x%8.8x SAR 0x%8.8x\n",
+ xoops->exccause, xoops->excvaddr, xoops->ps, xoops->sar);
+ dev_err(sdev->dev, "EPC1 0x%8.8x EPC2 0x%8.8x EPC3 0x%8.8x EPC4 0x%8.8x",
+ xoops->epc1, xoops->epc2, xoops->epc3, xoops->epc4);
+ dev_err(sdev->dev, "EPC5 0x%8.8x EPC6 0x%8.8x EPC7 0x%8.8x DEPC 0x%8.8x",
+ xoops->epc5, xoops->epc6, xoops->epc7, xoops->depc);
+ dev_err(sdev->dev, "EPS2 0x%8.8x EPS3 0x%8.8x EPS4 0x%8.8x EPS5 0x%8.8x",
+ xoops->eps2, xoops->eps3, xoops->eps4, xoops->eps5);
+ dev_err(sdev->dev, "EPS6 0x%8.8x EPS7 0x%8.8x INTENABL 0x%8.8x INTERRU 0x%8.8x",
+ xoops->eps6, xoops->eps7, xoops->intenable, xoops->interrupt);
+}
+
+static void xtensa_stack(struct snd_sof_dev *sdev, void *oops, u32 *stack,
+ u32 stack_words)
+{
+ struct sof_ipc_dsp_oops_xtensa *xoops = oops;
+ u32 stack_ptr = xoops->stack;
+ int i;
+
+ dev_err(sdev->dev, "stack dump from 0x%8.8x\n", stack_ptr);
+
+ for (i = 0; i <= stack_words - 4; i += 4) {
+ dev_err(sdev->dev, "0x%8.8x: 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x\n",
+ stack_ptr + i, stack[i], stack[i + 1], stack[i + 2],
+ stack[i + 3]);
+ }
+
+ /* deal with any remaining words */
+ switch (stack_words - i) {
+ case 0:
+ break;
+ case 1:
+ dev_err(sdev->dev, "0x%8.8x: 0x%8.8x\n",
+ stack_ptr + stack_words - 1, stack[stack_words - 1]);
+ break;
+ case 2:
+ dev_err(sdev->dev, "0x%8.8x: 0x%8.8x 0x%8.8x\n",
+ stack_ptr + stack_words - 2, stack[stack_words - 2],
+ stack[stack_words - 1]);
+ break;
+ case 3:
+ dev_err(sdev->dev, "0x%8.8x: 0x%8.8x 0x%8.8x 0x%8.8x\n",
+ stack_ptr + stack_words - 3, stack[stack_words - 3],
+ stack[stack_words - 2], stack[stack_words - 1]);
+ break;
+ default:
+ break;
+ }
+}
+
+const struct sof_arch_ops sof_xtensa_arch_ops = {
+ .dsp_oops = xtensa_dsp_oops,
+ .dsp_stack = xtensa_stack,
+};
+EXPORT_SYMBOL(sof_xtensa_arch_ops);
+
+MODULE_DESCRIPTION("SOF Xtensa DSP support");
+MODULE_LICENSE("Dual BSD/GPL");
--
2.17.1

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