net: wwan: iosm: coredump collection support

Implements protocol for coredump collection.

Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 75 insertions, 0 deletions

diff --git a/drivers/net/wwan/iosm/iosm_ipc_coredump.h b/drivers/net/wwan/iosm/iosm_ipc_coredump.h
new file mode 100644
index 000000000000..d5028153c8d1
--- /dev/null
+++ b/drivers/net/wwan/iosm/iosm_ipc_coredump.h
@@ -0,0 +1,75 @@
+/* SPDX-License-Identifier: GPL-2.0-only
+ *
+ * Copyright (C) 2020-2021 Intel Corporation.
+ */
+
+#ifndef _IOSM_IPC_COREDUMP_H_
+#define _IOSM_IPC_COREDUMP_H_
+
+#include "iosm_ipc_devlink.h"
+
+/* Max number of bytes to receive for Coredump list structure */
+#define MAX_CD_LIST_SIZE  0x1000
+
+/* Max buffer allocated to receive coredump data */
+#define MAX_DATA_SIZE 0x00010000
+
+/* Max number of file entries */
+#define MAX_NOF_ENTRY 256
+
+/* Max length */
+#define MAX_SIZE_LEN 32
+
+/**
+ * struct iosm_cd_list_entry - Structure to hold coredump file info.
+ * @size:       Number of bytes for the entry
+ * @filename:   Coredump filename to be generated on host
+ */
+struct iosm_cd_list_entry {
+	__le32 size;
+	char filename[IOSM_MAX_FILENAME_LEN];
+} __packed;
+
+/**
+ * struct iosm_cd_list - Structure to hold list of coredump files
+ *                      to be collected.
+ * @num_entries:        Number of entries to be received
+ * @entry:              Contains File info
+ */
+struct iosm_cd_list {
+	__le32 num_entries;
+	struct iosm_cd_list_entry entry[MAX_NOF_ENTRY];
+} __packed;
+
+/**
+ * struct iosm_cd_table - Common Coredump table
+ * @version:            Version of coredump structure
+ * @list:               Coredump list structure
+ */
+struct iosm_cd_table {
+	__le32 version;
+	struct iosm_cd_list list;
+} __packed;
+
+/**
+ * ipc_coredump_collect - To collect coredump
+ * @devlink:		Pointer to devlink instance.
+ * @data:		Pointer to snapshot
+ * @entry:		ID of requested snapshot
+ * @region_size:	Region size
+ *
+ * Returns: 0 on success, error on failure
+ */
+int ipc_coredump_collect(struct iosm_devlink *devlink, u8 **data, int entry,
+			 u32 region_size);
+
+/**
+ * ipc_coredump_get_list - Get coredump list
+ * @devlink:         Pointer to devlink instance.
+ * @cmd:	     RPSI command to be sent
+ *
+ * Returns: 0 on success, error on failure
+ */
+int ipc_coredump_get_list(struct iosm_devlink *devlink, u16 cmd);
+
+#endif /* _IOSM_IPC_COREDUMP_H_ */