ixgbe: add device flash update via devlink

Use the pldmfw library to implement device flash update for
the Intel ixgbe networking device driver specifically for E610 devices.
This support uses the devlink flash update interface.

Using the pldmfw library, the provided firmware file will be scanned for
the three major components, "fw.undi" for the Option ROM, "fw.mgmt" for
the main NVM module containing the primary device firmware, and
"fw.netlist" containing the netlist module.

The flash is separated into two banks, the active bank containing the
running firmware, and the inactive bank which we use for update. Each
module is updated in a staged process. First, the inactive bank is
erased, preparing the device for update. Second, the contents of the
component are copied to the inactive portion of the flash. After all
components are updated, the driver signals the device to switch the
active bank during the next EMP reset.

With this implementation, basic flash update for the E610 hardware is
supported.

Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Bharath R <bharath.r@intel.com>
Co-developed-by: Slawomir Mrozowicz <slawomirx.mrozowicz@intel.com>
Signed-off-by: Slawomir Mrozowicz <slawomirx.mrozowicz@intel.com>
Co-developed-by: Piotr Kwapulinski <piotr.kwapulinski@intel.com>
Signed-off-by: Piotr Kwapulinski <piotr.kwapulinski@intel.com>
Co-developed-by: Stefan Wegrzyn <stefan.wegrzyn@intel.com>
Signed-off-by: Stefan Wegrzyn <stefan.wegrzyn@intel.com>
Signed-off-by: Jedrzej Jagielski <jedrzej.jagielski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

1 files changed, 209 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c
index 24443db831eb..5abba05554c8 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c
@@ -597,6 +597,11 @@ static bool ixgbe_parse_e610_caps(struct ixgbe_hw *hw,
 	case IXGBE_ACI_CAPS_PENDING_NET_VER:
 		caps->nvm_update_pending_netlist = true;
 		break;
+	case IXGBE_ACI_CAPS_NVM_MGMT:
+		caps->nvm_unified_update =
+			(number & IXGBE_NVM_MGMT_UNIFIED_UPD_SUPPORT) ?
+			true : false;
+		break;
 	case IXGBE_ACI_CAPS_MAX_MTU:
 		caps->max_mtu = number;
 		break;
@@ -2295,6 +2300,131 @@ int ixgbe_aci_read_nvm(struct ixgbe_hw *hw, u16 module_typeid, u32 offset,
 }
 
 /**
+ * ixgbe_aci_erase_nvm - erase NVM sector
+ * @hw: pointer to the HW struct
+ * @module_typeid: module pointer location in words from the NVM beginning
+ *
+ * Erase the NVM sector using the ACI command (0x0702).
+ *
+ * Return: the exit code of the operation.
+ */
+int ixgbe_aci_erase_nvm(struct ixgbe_hw *hw, u16 module_typeid)
+{
+	struct ixgbe_aci_cmd_nvm *cmd;
+	struct ixgbe_aci_desc desc;
+	__le16 len;
+	int err;
+
+	/* Read a length value from SR, so module_typeid is equal to 0,
+	 * calculate offset where module size is placed from bytes to words
+	 * set last command and read from SR values to true.
+	 */
+	err = ixgbe_aci_read_nvm(hw, 0, 2 * module_typeid + 2, 2, &len, true,
+				 true);
+	if (err)
+		return err;
+
+	cmd = &desc.params.nvm;
+
+	ixgbe_fill_dflt_direct_cmd_desc(&desc, ixgbe_aci_opc_nvm_erase);
+
+	cmd->module_typeid = cpu_to_le16(module_typeid);
+	cmd->length = len;
+	cmd->offset_low = 0;
+	cmd->offset_high = 0;
+
+	return ixgbe_aci_send_cmd(hw, &desc, NULL, 0);
+}
+
+/**
+ * ixgbe_aci_update_nvm - update NVM
+ * @hw: pointer to the HW struct
+ * @module_typeid: module pointer location in words from the NVM beginning
+ * @offset: byte offset from the module beginning
+ * @length: length of the section to be written (in bytes from the offset)
+ * @data: command buffer (size [bytes] = length)
+ * @last_command: tells if this is the last command in a series
+ * @command_flags: command parameters
+ *
+ * Update the NVM using the ACI command (0x0703).
+ *
+ * Return: the exit code of the operation.
+ */
+int ixgbe_aci_update_nvm(struct ixgbe_hw *hw, u16 module_typeid,
+			 u32 offset, u16 length, void *data,
+			 bool last_command, u8 command_flags)
+{
+	struct ixgbe_aci_cmd_nvm *cmd;
+	struct ixgbe_aci_desc desc;
+
+	cmd = &desc.params.nvm;
+
+	/* In offset the highest byte must be zeroed. */
+	if (offset & 0xFF000000)
+		return -EINVAL;
+
+	ixgbe_fill_dflt_direct_cmd_desc(&desc, ixgbe_aci_opc_nvm_write);
+
+	cmd->cmd_flags |= command_flags;
+
+	/* If this is the last command in a series, set the proper flag. */
+	if (last_command)
+		cmd->cmd_flags |= IXGBE_ACI_NVM_LAST_CMD;
+	cmd->module_typeid = cpu_to_le16(module_typeid);
+	cmd->offset_low = cpu_to_le16(offset & 0xFFFF);
+	cmd->offset_high = FIELD_GET(IXGBE_ACI_NVM_OFFSET_HI_U_MASK, offset);
+	cmd->length = cpu_to_le16(length);
+
+	desc.flags |= cpu_to_le16(IXGBE_ACI_FLAG_RD);
+
+	return ixgbe_aci_send_cmd(hw, &desc, data, length);
+}
+
+/**
+ * ixgbe_nvm_write_activate - NVM activate write
+ * @hw: pointer to the HW struct
+ * @cmd_flags: flags for write activate command
+ * @response_flags: response indicators from firmware
+ *
+ * Update the control word with the required banks' validity bits
+ * and dumps the Shadow RAM to flash using ACI command (0x0707).
+ *
+ * cmd_flags controls which banks to activate, the preservation level to use
+ * when activating the NVM bank, and whether an EMP reset is required for
+ * activation.
+ *
+ * Note that the 16bit cmd_flags value is split between two separate 1 byte
+ * flag values in the descriptor.
+ *
+ * On successful return of the firmware command, the response_flags variable
+ * is updated with the flags reported by firmware indicating certain status,
+ * such as whether EMP reset is enabled.
+ *
+ * Return: the exit code of the operation.
+ */
+int ixgbe_nvm_write_activate(struct ixgbe_hw *hw, u16 cmd_flags,
+			     u8 *response_flags)
+{
+	struct ixgbe_aci_cmd_nvm *cmd;
+	struct ixgbe_aci_desc desc;
+	s32 err;
+
+	cmd = &desc.params.nvm;
+	ixgbe_fill_dflt_direct_cmd_desc(&desc,
+					ixgbe_aci_opc_nvm_write_activate);
+
+	cmd->cmd_flags = (u8)(cmd_flags & 0xFF);
+	cmd->offset_high = (u8)FIELD_GET(IXGBE_ACI_NVM_OFFSET_HI_A_MASK,
+					 cmd_flags);
+
+	err = ixgbe_aci_send_cmd(hw, &desc, NULL, 0);
+	if (!err && response_flags)
+		*response_flags = cmd->cmd_flags;
+
+	return err;
+}
+
+/**
  * ixgbe_nvm_validate_checksum - validate checksum
  * @hw: pointer to the HW struct
  *
@@ -3171,6 +3301,85 @@ int ixgbe_get_flash_data(struct ixgbe_hw *hw)
 	return err;
 }
 
+/* ixgbe_nvm_set_pkg_data - NVM set package data
+ * @hw: pointer to the HW struct
+ * @del_pkg_data_flag: If is set then the current pkg_data store by FW
+ *		       is deleted.
+ *		       If bit is set to 1, then buffer should be size 0.
+ * @data: pointer to buffer
+ * @length: length of the buffer
+ *
+ * Set package data using ACI command (0x070A).
+ * This command is equivalent to the reception of
+ * a PLDM FW Update GetPackageData cmd. This command should be sent
+ * as part of the NVM update as the first cmd in the flow.
+ *
+ * Return: the exit code of the operation.
+ */
+int ixgbe_nvm_set_pkg_data(struct ixgbe_hw *hw, bool del_pkg_data_flag,
+			   u8 *data, u16 length)
+{
+	struct ixgbe_aci_cmd_nvm_pkg_data *cmd;
+	struct ixgbe_aci_desc desc;
+
+	if (length != 0 && !data)
+		return -EINVAL;
+
+	cmd = &desc.params.pkg_data;
+
+	ixgbe_fill_dflt_direct_cmd_desc(&desc, ixgbe_aci_opc_nvm_pkg_data);
+	desc.flags |= cpu_to_le16(IXGBE_ACI_FLAG_RD);
+
+	if (del_pkg_data_flag)
+		cmd->cmd_flags |= IXGBE_ACI_NVM_PKG_DELETE;
+
+	return ixgbe_aci_send_cmd(hw, &desc, data, length);
+}
+
+/* ixgbe_nvm_pass_component_tbl - NVM pass component table
+ * @hw: pointer to the HW struct
+ * @data: pointer to buffer
+ * @length: length of the buffer
+ * @transfer_flag: parameter for determining stage of the update
+ * @comp_response: a pointer to the response from the 0x070B ACI.
+ * @comp_response_code: a pointer to the response code from the 0x070B ACI.
+ *
+ * Pass component table using ACI command (0x070B). This command is equivalent
+ * to the reception of a PLDM FW Update PassComponentTable cmd.
+ * This command should be sent once per component. It can be only sent after
+ * Set Package Data cmd and before actual update. FW will assume these
+ * commands are going to be sent until the TransferFlag is set to End or
+ * StartAndEnd.
+ *
+ * Return: the exit code of the operation.
+ */
+int ixgbe_nvm_pass_component_tbl(struct ixgbe_hw *hw, u8 *data, u16 length,
+				 u8 transfer_flag, u8 *comp_response,
+				 u8 *comp_response_code)
+{
+	struct ixgbe_aci_cmd_nvm_pass_comp_tbl *cmd;
+	struct ixgbe_aci_desc desc;
+	int err;
+
+	if (!data || !comp_response || !comp_response_code)
+		return -EINVAL;
+
+	cmd = &desc.params.pass_comp_tbl;
+
+	ixgbe_fill_dflt_direct_cmd_desc(&desc,
+					ixgbe_aci_opc_nvm_pass_component_tbl);
+	desc.flags |= cpu_to_le16(IXGBE_ACI_FLAG_RD);
+
+	cmd->transfer_flag = transfer_flag;
+	err = ixgbe_aci_send_cmd(hw, &desc, data, length);
+	if (!err) {
+		*comp_response = cmd->component_response;
+		*comp_response_code = cmd->component_response_code;
+	}
+
+	return err;
+}
+
 /**
  * ixgbe_read_sr_word_aci - Reads Shadow RAM via ACI
  * @hw: pointer to the HW structure