net: wwan: iosm: fw flashing support

Implements protocol for fw flashing and PSI injection 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, 271 insertions, 0 deletions

diff --git a/drivers/net/wwan/iosm/iosm_ipc_flash.h b/drivers/net/wwan/iosm/iosm_ipc_flash.h
new file mode 100644
index 000000000000..aee848927228
--- /dev/null
+++ b/drivers/net/wwan/iosm/iosm_ipc_flash.h
@@ -0,0 +1,271 @@
+/* SPDX-License-Identifier: GPL-2.0-only
+ *
+ * Copyright (C) 2020-2021 Intel Corporation.
+ */
+
+#ifndef _IOSM_IPC_FLASH_H
+#define _IOSM_IPC_FLASH_H
+
+/* Buffer size used to read the fls image */
+#define IOSM_FLS_BUF_SIZE 0x00100000
+/* Full erase start address */
+#define IOSM_ERASE_START_ADDR 0x00000000
+/* Erase length for NAND flash */
+#define IOSM_ERASE_LEN 0xFFFFFFFF
+/* EBL response Header size */
+#define IOSM_EBL_HEAD_SIZE  8
+/* EBL payload size */
+#define IOSM_EBL_W_PAYL_SIZE  2048
+/* Total EBL pack size */
+#define IOSM_EBL_W_PACK_SIZE  (IOSM_EBL_HEAD_SIZE + IOSM_EBL_W_PAYL_SIZE)
+/* EBL payload size */
+#define IOSM_EBL_DW_PAYL_SIZE  16384
+/* Total EBL pack size */
+#define IOSM_EBL_DW_PACK_SIZE  (IOSM_EBL_HEAD_SIZE + IOSM_EBL_DW_PAYL_SIZE)
+/* EBL name size */
+#define IOSM_EBL_NAME  32
+/* Maximum supported error types */
+#define IOSM_MAX_ERRORS 8
+/* Read size for RPSI/EBL response */
+#define IOSM_READ_SIZE 2
+/* Link establishment response ack size */
+#define IOSM_LER_ACK_SIZE 2
+/* PSI ACK len */
+#define IOSM_PSI_ACK 8
+/* SWID capability for packed swid type */
+#define IOSM_EXT_CAP_SWID_OOS_PACK     0x02
+/* EBL error response buffer */
+#define IOSM_EBL_RSP_BUFF 0x0041
+/* SWID string length */
+#define IOSM_SWID_STR 64
+/* Load EBL command size */
+#define IOSM_RPSI_LOAD_SIZE 0
+/* EBL payload checksum */
+#define IOSM_EBL_CKSM 0x0000FFFF
+/* SWID msg len and argument */
+#define IOSM_MSG_LEN_ARG 0
+/* Data to be sent to modem */
+#define IOSM_MDM_SEND_DATA 0x0000
+/* Data received from modem as part of erase check */
+#define IOSM_MDM_ERASE_RSP 0x0001
+/* Bit shift to calculate Checksum */
+#define IOSM_EBL_PAYL_SHIFT 16
+/* Flag To be set */
+#define IOSM_SET_FLAG 1
+/* Set flash erase check timeout to 100 msec */
+#define IOSM_FLASH_ERASE_CHECK_TIMEOUT 100
+/* Set flash erase check interval to 20 msec */
+#define IOSM_FLASH_ERASE_CHECK_INTERVAL 20
+/* Link establishment response ack size */
+#define IOSM_LER_RSP_SIZE 60
+
+/**
+ * enum iosm_flash_package_type -	Enum for the flashing operations
+ * @FLASH_SET_PROT_CONF:	Write EBL capabilities
+ * @FLASH_SEC_START:		Start writing the secpack
+ * @FLASH_SEC_END:		Validate secpack end
+ * @FLASH_SET_ADDRESS:		Set the address for flashing
+ * @FLASH_ERASE_START:		Start erase before flashing
+ * @FLASH_ERASE_CHECK:		Validate the erase functionality
+ * @FLASH_OOS_CONTROL:		Retrieve data based on oos actions
+ * @FLASH_OOS_DATA_READ:	Read data from EBL
+ * @FLASH_WRITE_IMAGE_RAW:	Write the raw image to flash
+ */
+enum iosm_flash_package_type {
+	FLASH_SET_PROT_CONF = 0x0086,
+	FLASH_SEC_START = 0x0204,
+	FLASH_SEC_END,
+	FLASH_SET_ADDRESS = 0x0802,
+	FLASH_ERASE_START = 0x0805,
+	FLASH_ERASE_CHECK,
+	FLASH_OOS_CONTROL = 0x080C,
+	FLASH_OOS_DATA_READ = 0x080E,
+	FLASH_WRITE_IMAGE_RAW,
+};
+
+/**
+ * enum iosm_out_of_session_action -	Actions possible over the
+ *					OutOfSession command interface
+ * @FLASH_OOSC_ACTION_READ:		Read data according to its type
+ * @FLASH_OOSC_ACTION_ERASE:		Erase data according to its type
+ */
+enum iosm_out_of_session_action {
+	FLASH_OOSC_ACTION_READ = 2,
+	FLASH_OOSC_ACTION_ERASE = 3,
+};
+
+/**
+ * enum iosm_out_of_session_type -	Data types that can be handled over the
+ *					Out Of Session command Interface
+ * @FLASH_OOSC_TYPE_ALL_FLASH:		The whole flash area
+ * @FLASH_OOSC_TYPE_SWID_TABLE:		Read the swid table from the target
+ */
+enum iosm_out_of_session_type {
+	FLASH_OOSC_TYPE_ALL_FLASH = 8,
+	FLASH_OOSC_TYPE_SWID_TABLE = 16,
+};
+
+/**
+ * enum iosm_ebl_caps -	EBL capability settings
+ * @IOSM_CAP_NOT_ENHANCED:	If capability not supported
+ * @IOSM_CAP_USE_EXT_CAP:	To be set if extended capability is set
+ * @IOSM_EXT_CAP_ERASE_ALL:	Set Erase all capability
+ * @IOSM_EXT_CAP_COMMIT_ALL:	Set the commit all capability
+ */
+enum iosm_ebl_caps {
+	IOSM_CAP_NOT_ENHANCED = 0x00,
+	IOSM_CAP_USE_EXT_CAP = 0x01,
+	IOSM_EXT_CAP_ERASE_ALL = 0x08,
+	IOSM_EXT_CAP_COMMIT_ALL = 0x20,
+};
+
+/**
+ * enum iosm_ebl_rsp -  EBL response field
+ * @EBL_CAPS_FLAG:	EBL capability flag
+ * @EBL_SKIP_ERASE:	EBL skip erase flag
+ * @EBL_SKIP_CRC:	EBL skip wr_pack crc
+ * @EBL_EXT_CAPS_HANDLED:	EBL extended capability handled flag
+ * @EBL_OOS_CONFIG:	EBL oos configuration
+ * @EBL_RSP_SW_INFO_VER: EBL SW info version
+ */
+enum iosm_ebl_rsp {
+	EBL_CAPS_FLAG = 50,
+	EBL_SKIP_ERASE = 54,
+	EBL_SKIP_CRC = 55,
+	EBL_EXT_CAPS_HANDLED = 57,
+	EBL_OOS_CONFIG = 64,
+	EBL_RSP_SW_INFO_VER = 70,
+};
+
+/**
+ * enum iosm_mdm_send_recv_data - Data to send to modem
+ * @IOSM_MDM_SEND_2:	Send 2 bytes of payload
+ * @IOSM_MDM_SEND_4:	Send 4 bytes of payload
+ * @IOSM_MDM_SEND_8:	Send 8 bytes of payload
+ * @IOSM_MDM_SEND_16:	Send 16 bytes of payload
+ */
+enum iosm_mdm_send_recv_data {
+	IOSM_MDM_SEND_2 = 2,
+	IOSM_MDM_SEND_4 = 4,
+	IOSM_MDM_SEND_8 = 8,
+	IOSM_MDM_SEND_16 = 16,
+};
+
+/**
+ * struct iosm_ebl_one_error -	Structure containing error details
+ * @error_class:		Error type- standard, security and text error
+ * @error_code:			Specific error from error type
+ */
+struct iosm_ebl_one_error {
+	u16 error_class;
+	u16 error_code;
+};
+
+/**
+ * struct iosm_ebl_error- Structure with max error type supported
+ * @error:		Array of one_error structure with max errors
+ */
+struct iosm_ebl_error {
+	struct iosm_ebl_one_error error[IOSM_MAX_ERRORS];
+};
+
+/**
+ * struct iosm_swid_table - SWID table data for modem
+ * @number_of_data_sets:	Number of swid types
+ * @sw_id_type:			SWID type - SWID
+ * @sw_id_val:			SWID value
+ * @rf_engine_id_type:		RF engine ID type - RF_ENGINE_ID
+ * @rf_engine_id_val:		RF engine ID value
+ */
+struct iosm_swid_table {
+	u32 number_of_data_sets;
+	char sw_id_type[IOSM_EBL_NAME];
+	u32 sw_id_val;
+	char rf_engine_id_type[IOSM_EBL_NAME];
+	u32 rf_engine_id_val;
+};
+
+/**
+ * struct iosm_flash_msg_control - Data sent to modem
+ * @action:	Action to be performed
+ * @type:	Type of action
+ * @length:	Length of the action
+ * @arguments:	Argument value sent to modem
+ */
+struct iosm_flash_msg_control {
+	__le32 action;
+	__le32 type;
+	__le32 length;
+	__le32 arguments;
+};
+
+/**
+ * struct iosm_flash_data -  Header Data to be sent to modem
+ * @checksum:	Checksum value calculated for the payload data
+ * @pack_id:	Flash Action type
+ * @msg_length:	Payload length
+ */
+struct iosm_flash_data {
+	__le16  checksum;
+	__le16  pack_id;
+	__le32  msg_length;
+};
+
+/**
+ * ipc_flash_boot_psi - Inject PSI image
+ * @ipc_devlink:	Pointer to devlink structure
+ * @fw:			FW image
+ *
+ * Returns:             0 on success and failure value on error
+ */
+int ipc_flash_boot_psi(struct iosm_devlink *ipc_devlink,
+		       const struct firmware *fw);
+
+/**
+ * ipc_flash_boot_ebl  - Inject EBL image
+ * @ipc_devlink:        Pointer to devlink structure
+ * @fw:			FW image
+ *
+ * Returns:             0 on success and failure value on error
+ */
+int ipc_flash_boot_ebl(struct iosm_devlink *ipc_devlink,
+		       const struct firmware *fw);
+
+/**
+ * ipc_flash_boot_set_capabilities  - Set modem bool capabilities in flash
+ * @ipc_devlink:        Pointer to devlink structure
+ * @mdm_rsp:		Pointer to modem response buffer
+ *
+ * Returns:             0 on success and failure value on error
+ */
+int ipc_flash_boot_set_capabilities(struct iosm_devlink *ipc_devlink,
+				    u8 *mdm_rsp);
+
+/**
+ * ipc_flash_link_establish - Flash link establishment
+ * @ipc_imem:		Pointer to struct iosm_imem
+ *
+ * Returns:	0 on success and failure value on error
+ */
+int ipc_flash_link_establish(struct iosm_imem *ipc_imem);
+
+/**
+ * ipc_flash_read_swid - Get swid during flash phase
+ * @ipc_devlink:        Pointer to devlink structure
+ * @mdm_rsp:		Pointer to modem response buffer
+ *
+ * Returns:             0 on success and failure value on error
+ */
+int ipc_flash_read_swid(struct iosm_devlink *ipc_devlink, u8 *mdm_rsp);
+
+/**
+ * ipc_flash_send_fls  - Inject Modem subsystem fls file to device
+ * @ipc_devlink:        Pointer to devlink structure
+ * @fw:			FW image
+ * @mdm_rsp:		Pointer to modem response buffer
+ *
+ * Returns:             0 on success and failure value on error
+ */
+int ipc_flash_send_fls(struct iosm_devlink *ipc_devlink,
+		       const struct firmware *fw, u8 *mdm_rsp);
+#endif