2306 lines
64 KiB
C
2306 lines
64 KiB
C
/*
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* Copyright(c) 2015 - 2017 Intel Corporation.
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* BSD LICENSE
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* - Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <linux/firmware.h>
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#include <linux/mutex.h>
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#include <linux/module.h>
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#include <linux/delay.h>
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#include <linux/crc32.h>
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#include "hfi.h"
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#include "trace.h"
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/*
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* Make it easy to toggle firmware file name and if it gets loaded by
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* editing the following. This may be something we do while in development
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* but not necessarily something a user would ever need to use.
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*/
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#define DEFAULT_FW_8051_NAME_FPGA "hfi_dc8051.bin"
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#define DEFAULT_FW_8051_NAME_ASIC "hfi1_dc8051.fw"
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#define DEFAULT_FW_FABRIC_NAME "hfi1_fabric.fw"
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#define DEFAULT_FW_SBUS_NAME "hfi1_sbus.fw"
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#define DEFAULT_FW_PCIE_NAME "hfi1_pcie.fw"
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#define ALT_FW_8051_NAME_ASIC "hfi1_dc8051_d.fw"
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#define ALT_FW_FABRIC_NAME "hfi1_fabric_d.fw"
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#define ALT_FW_SBUS_NAME "hfi1_sbus_d.fw"
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#define ALT_FW_PCIE_NAME "hfi1_pcie_d.fw"
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MODULE_FIRMWARE(DEFAULT_FW_8051_NAME_ASIC);
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MODULE_FIRMWARE(DEFAULT_FW_FABRIC_NAME);
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MODULE_FIRMWARE(DEFAULT_FW_SBUS_NAME);
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MODULE_FIRMWARE(DEFAULT_FW_PCIE_NAME);
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static uint fw_8051_load = 1;
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static uint fw_fabric_serdes_load = 1;
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static uint fw_pcie_serdes_load = 1;
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static uint fw_sbus_load = 1;
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/* Firmware file names get set in hfi1_firmware_init() based on the above */
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static char *fw_8051_name;
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static char *fw_fabric_serdes_name;
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static char *fw_sbus_name;
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static char *fw_pcie_serdes_name;
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#define SBUS_MAX_POLL_COUNT 100
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#define SBUS_COUNTER(reg, name) \
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(((reg) >> ASIC_STS_SBUS_COUNTERS_##name##_CNT_SHIFT) & \
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ASIC_STS_SBUS_COUNTERS_##name##_CNT_MASK)
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/*
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* Firmware security header.
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*/
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struct css_header {
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u32 module_type;
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u32 header_len;
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u32 header_version;
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u32 module_id;
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u32 module_vendor;
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u32 date; /* BCD yyyymmdd */
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u32 size; /* in DWORDs */
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u32 key_size; /* in DWORDs */
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u32 modulus_size; /* in DWORDs */
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u32 exponent_size; /* in DWORDs */
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u32 reserved[22];
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};
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/* expected field values */
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#define CSS_MODULE_TYPE 0x00000006
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#define CSS_HEADER_LEN 0x000000a1
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#define CSS_HEADER_VERSION 0x00010000
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#define CSS_MODULE_VENDOR 0x00008086
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#define KEY_SIZE 256
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#define MU_SIZE 8
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#define EXPONENT_SIZE 4
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/* size of platform configuration partition */
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#define MAX_PLATFORM_CONFIG_FILE_SIZE 4096
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/* size of file of plaform configuration encoded in format version 4 */
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#define PLATFORM_CONFIG_FORMAT_4_FILE_SIZE 528
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/* the file itself */
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struct firmware_file {
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struct css_header css_header;
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u8 modulus[KEY_SIZE];
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u8 exponent[EXPONENT_SIZE];
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u8 signature[KEY_SIZE];
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u8 firmware[];
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};
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struct augmented_firmware_file {
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struct css_header css_header;
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u8 modulus[KEY_SIZE];
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u8 exponent[EXPONENT_SIZE];
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u8 signature[KEY_SIZE];
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u8 r2[KEY_SIZE];
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u8 mu[MU_SIZE];
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u8 firmware[];
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};
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/* augmented file size difference */
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#define AUGMENT_SIZE (sizeof(struct augmented_firmware_file) - \
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sizeof(struct firmware_file))
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struct firmware_details {
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/* Linux core piece */
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const struct firmware *fw;
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struct css_header *css_header;
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u8 *firmware_ptr; /* pointer to binary data */
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u32 firmware_len; /* length in bytes */
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u8 *modulus; /* pointer to the modulus */
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u8 *exponent; /* pointer to the exponent */
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u8 *signature; /* pointer to the signature */
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u8 *r2; /* pointer to r2 */
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u8 *mu; /* pointer to mu */
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struct augmented_firmware_file dummy_header;
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};
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/*
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* The mutex protects fw_state, fw_err, and all of the firmware_details
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* variables.
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*/
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static DEFINE_MUTEX(fw_mutex);
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enum fw_state {
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FW_EMPTY,
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FW_TRY,
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FW_FINAL,
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FW_ERR
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};
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static enum fw_state fw_state = FW_EMPTY;
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static int fw_err;
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static struct firmware_details fw_8051;
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static struct firmware_details fw_fabric;
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static struct firmware_details fw_pcie;
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static struct firmware_details fw_sbus;
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/* flags for turn_off_spicos() */
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#define SPICO_SBUS 0x1
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#define SPICO_FABRIC 0x2
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#define ENABLE_SPICO_SMASK 0x1
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/* security block commands */
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#define RSA_CMD_INIT 0x1
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#define RSA_CMD_START 0x2
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/* security block status */
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#define RSA_STATUS_IDLE 0x0
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#define RSA_STATUS_ACTIVE 0x1
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#define RSA_STATUS_DONE 0x2
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#define RSA_STATUS_FAILED 0x3
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/* RSA engine timeout, in ms */
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#define RSA_ENGINE_TIMEOUT 100 /* ms */
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/* hardware mutex timeout, in ms */
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#define HM_TIMEOUT 10 /* ms */
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/* 8051 memory access timeout, in us */
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#define DC8051_ACCESS_TIMEOUT 100 /* us */
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/* the number of fabric SerDes on the SBus */
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#define NUM_FABRIC_SERDES 4
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/* ASIC_STS_SBUS_RESULT.RESULT_CODE value */
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#define SBUS_READ_COMPLETE 0x4
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/* SBus fabric SerDes addresses, one set per HFI */
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static const u8 fabric_serdes_addrs[2][NUM_FABRIC_SERDES] = {
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{ 0x01, 0x02, 0x03, 0x04 },
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{ 0x28, 0x29, 0x2a, 0x2b }
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};
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/* SBus PCIe SerDes addresses, one set per HFI */
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static const u8 pcie_serdes_addrs[2][NUM_PCIE_SERDES] = {
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{ 0x08, 0x0a, 0x0c, 0x0e, 0x10, 0x12, 0x14, 0x16,
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0x18, 0x1a, 0x1c, 0x1e, 0x20, 0x22, 0x24, 0x26 },
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{ 0x2f, 0x31, 0x33, 0x35, 0x37, 0x39, 0x3b, 0x3d,
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0x3f, 0x41, 0x43, 0x45, 0x47, 0x49, 0x4b, 0x4d }
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};
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/* SBus PCIe PCS addresses, one set per HFI */
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const u8 pcie_pcs_addrs[2][NUM_PCIE_SERDES] = {
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{ 0x09, 0x0b, 0x0d, 0x0f, 0x11, 0x13, 0x15, 0x17,
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0x19, 0x1b, 0x1d, 0x1f, 0x21, 0x23, 0x25, 0x27 },
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{ 0x30, 0x32, 0x34, 0x36, 0x38, 0x3a, 0x3c, 0x3e,
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0x40, 0x42, 0x44, 0x46, 0x48, 0x4a, 0x4c, 0x4e }
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};
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/* SBus fabric SerDes broadcast addresses, one per HFI */
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static const u8 fabric_serdes_broadcast[2] = { 0xe4, 0xe5 };
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static const u8 all_fabric_serdes_broadcast = 0xe1;
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/* SBus PCIe SerDes broadcast addresses, one per HFI */
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const u8 pcie_serdes_broadcast[2] = { 0xe2, 0xe3 };
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static const u8 all_pcie_serdes_broadcast = 0xe0;
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static const u32 platform_config_table_limits[PLATFORM_CONFIG_TABLE_MAX] = {
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0,
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SYSTEM_TABLE_MAX,
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PORT_TABLE_MAX,
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RX_PRESET_TABLE_MAX,
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TX_PRESET_TABLE_MAX,
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QSFP_ATTEN_TABLE_MAX,
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VARIABLE_SETTINGS_TABLE_MAX
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};
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/* forwards */
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static void dispose_one_firmware(struct firmware_details *fdet);
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static int load_fabric_serdes_firmware(struct hfi1_devdata *dd,
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struct firmware_details *fdet);
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static void dump_fw_version(struct hfi1_devdata *dd);
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/*
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* Read a single 64-bit value from 8051 data memory.
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*
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* Expects:
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* o caller to have already set up data read, no auto increment
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* o caller to turn off read enable when finished
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*
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* The address argument is a byte offset. Bits 0:2 in the address are
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* ignored - i.e. the hardware will always do aligned 8-byte reads as if
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* the lower bits are zero.
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*
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* Return 0 on success, -ENXIO on a read error (timeout).
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*/
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static int __read_8051_data(struct hfi1_devdata *dd, u32 addr, u64 *result)
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{
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u64 reg;
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int count;
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/* step 1: set the address, clear enable */
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reg = (addr & DC_DC8051_CFG_RAM_ACCESS_CTRL_ADDRESS_MASK)
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<< DC_DC8051_CFG_RAM_ACCESS_CTRL_ADDRESS_SHIFT;
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write_csr(dd, DC_DC8051_CFG_RAM_ACCESS_CTRL, reg);
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/* step 2: enable */
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write_csr(dd, DC_DC8051_CFG_RAM_ACCESS_CTRL,
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reg | DC_DC8051_CFG_RAM_ACCESS_CTRL_READ_ENA_SMASK);
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/* wait until ACCESS_COMPLETED is set */
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count = 0;
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while ((read_csr(dd, DC_DC8051_CFG_RAM_ACCESS_STATUS)
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& DC_DC8051_CFG_RAM_ACCESS_STATUS_ACCESS_COMPLETED_SMASK)
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== 0) {
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count++;
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if (count > DC8051_ACCESS_TIMEOUT) {
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dd_dev_err(dd, "timeout reading 8051 data\n");
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return -ENXIO;
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}
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ndelay(10);
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}
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/* gather the data */
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*result = read_csr(dd, DC_DC8051_CFG_RAM_ACCESS_RD_DATA);
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return 0;
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}
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/*
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* Read 8051 data starting at addr, for len bytes. Will read in 8-byte chunks.
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* Return 0 on success, -errno on error.
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*/
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int read_8051_data(struct hfi1_devdata *dd, u32 addr, u32 len, u64 *result)
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{
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unsigned long flags;
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u32 done;
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int ret = 0;
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spin_lock_irqsave(&dd->dc8051_memlock, flags);
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/* data read set-up, no auto-increment */
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write_csr(dd, DC_DC8051_CFG_RAM_ACCESS_SETUP, 0);
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for (done = 0; done < len; addr += 8, done += 8, result++) {
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ret = __read_8051_data(dd, addr, result);
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if (ret)
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break;
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}
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/* turn off read enable */
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write_csr(dd, DC_DC8051_CFG_RAM_ACCESS_CTRL, 0);
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spin_unlock_irqrestore(&dd->dc8051_memlock, flags);
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return ret;
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}
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/*
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* Write data or code to the 8051 code or data RAM.
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*/
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static int write_8051(struct hfi1_devdata *dd, int code, u32 start,
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const u8 *data, u32 len)
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{
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u64 reg;
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u32 offset;
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int aligned, count;
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/* check alignment */
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aligned = ((unsigned long)data & 0x7) == 0;
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/* write set-up */
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reg = (code ? DC_DC8051_CFG_RAM_ACCESS_SETUP_RAM_SEL_SMASK : 0ull)
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| DC_DC8051_CFG_RAM_ACCESS_SETUP_AUTO_INCR_ADDR_SMASK;
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write_csr(dd, DC_DC8051_CFG_RAM_ACCESS_SETUP, reg);
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reg = ((start & DC_DC8051_CFG_RAM_ACCESS_CTRL_ADDRESS_MASK)
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<< DC_DC8051_CFG_RAM_ACCESS_CTRL_ADDRESS_SHIFT)
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| DC_DC8051_CFG_RAM_ACCESS_CTRL_WRITE_ENA_SMASK;
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write_csr(dd, DC_DC8051_CFG_RAM_ACCESS_CTRL, reg);
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/* write */
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for (offset = 0; offset < len; offset += 8) {
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int bytes = len - offset;
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if (bytes < 8) {
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reg = 0;
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memcpy(®, &data[offset], bytes);
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} else if (aligned) {
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reg = *(u64 *)&data[offset];
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} else {
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memcpy(®, &data[offset], 8);
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}
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write_csr(dd, DC_DC8051_CFG_RAM_ACCESS_WR_DATA, reg);
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/* wait until ACCESS_COMPLETED is set */
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count = 0;
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while ((read_csr(dd, DC_DC8051_CFG_RAM_ACCESS_STATUS)
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& DC_DC8051_CFG_RAM_ACCESS_STATUS_ACCESS_COMPLETED_SMASK)
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== 0) {
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count++;
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if (count > DC8051_ACCESS_TIMEOUT) {
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dd_dev_err(dd, "timeout writing 8051 data\n");
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return -ENXIO;
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}
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udelay(1);
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}
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}
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/* turn off write access, auto increment (also sets to data access) */
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write_csr(dd, DC_DC8051_CFG_RAM_ACCESS_CTRL, 0);
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write_csr(dd, DC_DC8051_CFG_RAM_ACCESS_SETUP, 0);
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return 0;
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}
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/* return 0 if values match, non-zero and complain otherwise */
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static int invalid_header(struct hfi1_devdata *dd, const char *what,
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u32 actual, u32 expected)
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{
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if (actual == expected)
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return 0;
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dd_dev_err(dd,
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"invalid firmware header field %s: expected 0x%x, actual 0x%x\n",
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what, expected, actual);
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return 1;
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}
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/*
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* Verify that the static fields in the CSS header match.
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*/
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static int verify_css_header(struct hfi1_devdata *dd, struct css_header *css)
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{
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/* verify CSS header fields (most sizes are in DW, so add /4) */
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if (invalid_header(dd, "module_type", css->module_type,
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CSS_MODULE_TYPE) ||
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invalid_header(dd, "header_len", css->header_len,
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(sizeof(struct firmware_file) / 4)) ||
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invalid_header(dd, "header_version", css->header_version,
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CSS_HEADER_VERSION) ||
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invalid_header(dd, "module_vendor", css->module_vendor,
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CSS_MODULE_VENDOR) ||
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invalid_header(dd, "key_size", css->key_size, KEY_SIZE / 4) ||
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invalid_header(dd, "modulus_size", css->modulus_size,
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KEY_SIZE / 4) ||
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invalid_header(dd, "exponent_size", css->exponent_size,
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EXPONENT_SIZE / 4)) {
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return -EINVAL;
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}
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return 0;
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}
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|
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/*
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* Make sure there are at least some bytes after the prefix.
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*/
|
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static int payload_check(struct hfi1_devdata *dd, const char *name,
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long file_size, long prefix_size)
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{
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/* make sure we have some payload */
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if (prefix_size >= file_size) {
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dd_dev_err(dd,
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"firmware \"%s\", size %ld, must be larger than %ld bytes\n",
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name, file_size, prefix_size);
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return -EINVAL;
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}
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return 0;
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}
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|
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/*
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* Request the firmware from the system. Extract the pieces and fill in
|
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* fdet. If successful, the caller will need to call dispose_one_firmware().
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* Returns 0 on success, -ERRNO on error.
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*/
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static int obtain_one_firmware(struct hfi1_devdata *dd, const char *name,
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struct firmware_details *fdet)
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{
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struct css_header *css;
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int ret;
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|
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memset(fdet, 0, sizeof(*fdet));
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ret = request_firmware(&fdet->fw, name, &dd->pcidev->dev);
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if (ret) {
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dd_dev_warn(dd, "cannot find firmware \"%s\", err %d\n",
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name, ret);
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return ret;
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}
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|
|
|
/* verify the firmware */
|
|
if (fdet->fw->size < sizeof(struct css_header)) {
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dd_dev_err(dd, "firmware \"%s\" is too small\n", name);
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ret = -EINVAL;
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goto done;
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}
|
|
css = (struct css_header *)fdet->fw->data;
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|
|
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hfi1_cdbg(FIRMWARE, "Firmware %s details:", name);
|
|
hfi1_cdbg(FIRMWARE, "file size: 0x%lx bytes", fdet->fw->size);
|
|
hfi1_cdbg(FIRMWARE, "CSS structure:");
|
|
hfi1_cdbg(FIRMWARE, " module_type 0x%x", css->module_type);
|
|
hfi1_cdbg(FIRMWARE, " header_len 0x%03x (0x%03x bytes)",
|
|
css->header_len, 4 * css->header_len);
|
|
hfi1_cdbg(FIRMWARE, " header_version 0x%x", css->header_version);
|
|
hfi1_cdbg(FIRMWARE, " module_id 0x%x", css->module_id);
|
|
hfi1_cdbg(FIRMWARE, " module_vendor 0x%x", css->module_vendor);
|
|
hfi1_cdbg(FIRMWARE, " date 0x%x", css->date);
|
|
hfi1_cdbg(FIRMWARE, " size 0x%03x (0x%03x bytes)",
|
|
css->size, 4 * css->size);
|
|
hfi1_cdbg(FIRMWARE, " key_size 0x%03x (0x%03x bytes)",
|
|
css->key_size, 4 * css->key_size);
|
|
hfi1_cdbg(FIRMWARE, " modulus_size 0x%03x (0x%03x bytes)",
|
|
css->modulus_size, 4 * css->modulus_size);
|
|
hfi1_cdbg(FIRMWARE, " exponent_size 0x%03x (0x%03x bytes)",
|
|
css->exponent_size, 4 * css->exponent_size);
|
|
hfi1_cdbg(FIRMWARE, "firmware size: 0x%lx bytes",
|
|
fdet->fw->size - sizeof(struct firmware_file));
|
|
|
|
/*
|
|
* If the file does not have a valid CSS header, fail.
|
|
* Otherwise, check the CSS size field for an expected size.
|
|
* The augmented file has r2 and mu inserted after the header
|
|
* was generated, so there will be a known difference between
|
|
* the CSS header size and the actual file size. Use this
|
|
* difference to identify an augmented file.
|
|
*
|
|
* Note: css->size is in DWORDs, multiply by 4 to get bytes.
|
|
*/
|
|
ret = verify_css_header(dd, css);
|
|
if (ret) {
|
|
dd_dev_info(dd, "Invalid CSS header for \"%s\"\n", name);
|
|
} else if ((css->size * 4) == fdet->fw->size) {
|
|
/* non-augmented firmware file */
|
|
struct firmware_file *ff = (struct firmware_file *)
|
|
fdet->fw->data;
|
|
|
|
/* make sure there are bytes in the payload */
|
|
ret = payload_check(dd, name, fdet->fw->size,
|
|
sizeof(struct firmware_file));
|
|
if (ret == 0) {
|
|
fdet->css_header = css;
|
|
fdet->modulus = ff->modulus;
|
|
fdet->exponent = ff->exponent;
|
|
fdet->signature = ff->signature;
|
|
fdet->r2 = fdet->dummy_header.r2; /* use dummy space */
|
|
fdet->mu = fdet->dummy_header.mu; /* use dummy space */
|
|
fdet->firmware_ptr = ff->firmware;
|
|
fdet->firmware_len = fdet->fw->size -
|
|
sizeof(struct firmware_file);
|
|
/*
|
|
* Header does not include r2 and mu - generate here.
|
|
* For now, fail.
|
|
*/
|
|
dd_dev_err(dd, "driver is unable to validate firmware without r2 and mu (not in firmware file)\n");
|
|
ret = -EINVAL;
|
|
}
|
|
} else if ((css->size * 4) + AUGMENT_SIZE == fdet->fw->size) {
|
|
/* augmented firmware file */
|
|
struct augmented_firmware_file *aff =
|
|
(struct augmented_firmware_file *)fdet->fw->data;
|
|
|
|
/* make sure there are bytes in the payload */
|
|
ret = payload_check(dd, name, fdet->fw->size,
|
|
sizeof(struct augmented_firmware_file));
|
|
if (ret == 0) {
|
|
fdet->css_header = css;
|
|
fdet->modulus = aff->modulus;
|
|
fdet->exponent = aff->exponent;
|
|
fdet->signature = aff->signature;
|
|
fdet->r2 = aff->r2;
|
|
fdet->mu = aff->mu;
|
|
fdet->firmware_ptr = aff->firmware;
|
|
fdet->firmware_len = fdet->fw->size -
|
|
sizeof(struct augmented_firmware_file);
|
|
}
|
|
} else {
|
|
/* css->size check failed */
|
|
dd_dev_err(dd,
|
|
"invalid firmware header field size: expected 0x%lx or 0x%lx, actual 0x%x\n",
|
|
fdet->fw->size / 4,
|
|
(fdet->fw->size - AUGMENT_SIZE) / 4,
|
|
css->size);
|
|
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
done:
|
|
/* if returning an error, clean up after ourselves */
|
|
if (ret)
|
|
dispose_one_firmware(fdet);
|
|
return ret;
|
|
}
|
|
|
|
static void dispose_one_firmware(struct firmware_details *fdet)
|
|
{
|
|
release_firmware(fdet->fw);
|
|
/* erase all previous information */
|
|
memset(fdet, 0, sizeof(*fdet));
|
|
}
|
|
|
|
/*
|
|
* Obtain the 4 firmwares from the OS. All must be obtained at once or not
|
|
* at all. If called with the firmware state in FW_TRY, use alternate names.
|
|
* On exit, this routine will have set the firmware state to one of FW_TRY,
|
|
* FW_FINAL, or FW_ERR.
|
|
*
|
|
* Must be holding fw_mutex.
|
|
*/
|
|
static void __obtain_firmware(struct hfi1_devdata *dd)
|
|
{
|
|
int err = 0;
|
|
|
|
if (fw_state == FW_FINAL) /* nothing more to obtain */
|
|
return;
|
|
if (fw_state == FW_ERR) /* already in error */
|
|
return;
|
|
|
|
/* fw_state is FW_EMPTY or FW_TRY */
|
|
retry:
|
|
if (fw_state == FW_TRY) {
|
|
/*
|
|
* We tried the original and it failed. Move to the
|
|
* alternate.
|
|
*/
|
|
dd_dev_warn(dd, "using alternate firmware names\n");
|
|
/*
|
|
* Let others run. Some systems, when missing firmware, does
|
|
* something that holds for 30 seconds. If we do that twice
|
|
* in a row it triggers task blocked warning.
|
|
*/
|
|
cond_resched();
|
|
if (fw_8051_load)
|
|
dispose_one_firmware(&fw_8051);
|
|
if (fw_fabric_serdes_load)
|
|
dispose_one_firmware(&fw_fabric);
|
|
if (fw_sbus_load)
|
|
dispose_one_firmware(&fw_sbus);
|
|
if (fw_pcie_serdes_load)
|
|
dispose_one_firmware(&fw_pcie);
|
|
fw_8051_name = ALT_FW_8051_NAME_ASIC;
|
|
fw_fabric_serdes_name = ALT_FW_FABRIC_NAME;
|
|
fw_sbus_name = ALT_FW_SBUS_NAME;
|
|
fw_pcie_serdes_name = ALT_FW_PCIE_NAME;
|
|
|
|
/*
|
|
* Add a delay before obtaining and loading debug firmware.
|
|
* Authorization will fail if the delay between firmware
|
|
* authorization events is shorter than 50us. Add 100us to
|
|
* make a delay time safe.
|
|
*/
|
|
usleep_range(100, 120);
|
|
}
|
|
|
|
if (fw_sbus_load) {
|
|
err = obtain_one_firmware(dd, fw_sbus_name, &fw_sbus);
|
|
if (err)
|
|
goto done;
|
|
}
|
|
|
|
if (fw_pcie_serdes_load) {
|
|
err = obtain_one_firmware(dd, fw_pcie_serdes_name, &fw_pcie);
|
|
if (err)
|
|
goto done;
|
|
}
|
|
|
|
if (fw_fabric_serdes_load) {
|
|
err = obtain_one_firmware(dd, fw_fabric_serdes_name,
|
|
&fw_fabric);
|
|
if (err)
|
|
goto done;
|
|
}
|
|
|
|
if (fw_8051_load) {
|
|
err = obtain_one_firmware(dd, fw_8051_name, &fw_8051);
|
|
if (err)
|
|
goto done;
|
|
}
|
|
|
|
done:
|
|
if (err) {
|
|
/* oops, had problems obtaining a firmware */
|
|
if (fw_state == FW_EMPTY && dd->icode == ICODE_RTL_SILICON) {
|
|
/* retry with alternate (RTL only) */
|
|
fw_state = FW_TRY;
|
|
goto retry;
|
|
}
|
|
dd_dev_err(dd, "unable to obtain working firmware\n");
|
|
fw_state = FW_ERR;
|
|
fw_err = -ENOENT;
|
|
} else {
|
|
/* success */
|
|
if (fw_state == FW_EMPTY &&
|
|
dd->icode != ICODE_FUNCTIONAL_SIMULATOR)
|
|
fw_state = FW_TRY; /* may retry later */
|
|
else
|
|
fw_state = FW_FINAL; /* cannot try again */
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Called by all HFIs when loading their firmware - i.e. device probe time.
|
|
* The first one will do the actual firmware load. Use a mutex to resolve
|
|
* any possible race condition.
|
|
*
|
|
* The call to this routine cannot be moved to driver load because the kernel
|
|
* call request_firmware() requires a device which is only available after
|
|
* the first device probe.
|
|
*/
|
|
static int obtain_firmware(struct hfi1_devdata *dd)
|
|
{
|
|
unsigned long timeout;
|
|
|
|
mutex_lock(&fw_mutex);
|
|
|
|
/* 40s delay due to long delay on missing firmware on some systems */
|
|
timeout = jiffies + msecs_to_jiffies(40000);
|
|
while (fw_state == FW_TRY) {
|
|
/*
|
|
* Another device is trying the firmware. Wait until it
|
|
* decides what works (or not).
|
|
*/
|
|
if (time_after(jiffies, timeout)) {
|
|
/* waited too long */
|
|
dd_dev_err(dd, "Timeout waiting for firmware try");
|
|
fw_state = FW_ERR;
|
|
fw_err = -ETIMEDOUT;
|
|
break;
|
|
}
|
|
mutex_unlock(&fw_mutex);
|
|
msleep(20); /* arbitrary delay */
|
|
mutex_lock(&fw_mutex);
|
|
}
|
|
/* not in FW_TRY state */
|
|
|
|
/* set fw_state to FW_TRY, FW_FINAL, or FW_ERR, and fw_err */
|
|
if (fw_state == FW_EMPTY)
|
|
__obtain_firmware(dd);
|
|
|
|
mutex_unlock(&fw_mutex);
|
|
return fw_err;
|
|
}
|
|
|
|
/*
|
|
* Called when the driver unloads. The timing is asymmetric with its
|
|
* counterpart, obtain_firmware(). If called at device remove time,
|
|
* then it is conceivable that another device could probe while the
|
|
* firmware is being disposed. The mutexes can be moved to do that
|
|
* safely, but then the firmware would be requested from the OS multiple
|
|
* times.
|
|
*
|
|
* No mutex is needed as the driver is unloading and there cannot be any
|
|
* other callers.
|
|
*/
|
|
void dispose_firmware(void)
|
|
{
|
|
dispose_one_firmware(&fw_8051);
|
|
dispose_one_firmware(&fw_fabric);
|
|
dispose_one_firmware(&fw_pcie);
|
|
dispose_one_firmware(&fw_sbus);
|
|
|
|
/* retain the error state, otherwise revert to empty */
|
|
if (fw_state != FW_ERR)
|
|
fw_state = FW_EMPTY;
|
|
}
|
|
|
|
/*
|
|
* Called with the result of a firmware download.
|
|
*
|
|
* Return 1 to retry loading the firmware, 0 to stop.
|
|
*/
|
|
static int retry_firmware(struct hfi1_devdata *dd, int load_result)
|
|
{
|
|
int retry;
|
|
|
|
mutex_lock(&fw_mutex);
|
|
|
|
if (load_result == 0) {
|
|
/*
|
|
* The load succeeded, so expect all others to do the same.
|
|
* Do not retry again.
|
|
*/
|
|
if (fw_state == FW_TRY)
|
|
fw_state = FW_FINAL;
|
|
retry = 0; /* do NOT retry */
|
|
} else if (fw_state == FW_TRY) {
|
|
/* load failed, obtain alternate firmware */
|
|
__obtain_firmware(dd);
|
|
retry = (fw_state == FW_FINAL);
|
|
} else {
|
|
/* else in FW_FINAL or FW_ERR, no retry in either case */
|
|
retry = 0;
|
|
}
|
|
|
|
mutex_unlock(&fw_mutex);
|
|
return retry;
|
|
}
|
|
|
|
/*
|
|
* Write a block of data to a given array CSR. All calls will be in
|
|
* multiples of 8 bytes.
|
|
*/
|
|
static void write_rsa_data(struct hfi1_devdata *dd, int what,
|
|
const u8 *data, int nbytes)
|
|
{
|
|
int qw_size = nbytes / 8;
|
|
int i;
|
|
|
|
if (((unsigned long)data & 0x7) == 0) {
|
|
/* aligned */
|
|
u64 *ptr = (u64 *)data;
|
|
|
|
for (i = 0; i < qw_size; i++, ptr++)
|
|
write_csr(dd, what + (8 * i), *ptr);
|
|
} else {
|
|
/* not aligned */
|
|
for (i = 0; i < qw_size; i++, data += 8) {
|
|
u64 value;
|
|
|
|
memcpy(&value, data, 8);
|
|
write_csr(dd, what + (8 * i), value);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Write a block of data to a given CSR as a stream of writes. All calls will
|
|
* be in multiples of 8 bytes.
|
|
*/
|
|
static void write_streamed_rsa_data(struct hfi1_devdata *dd, int what,
|
|
const u8 *data, int nbytes)
|
|
{
|
|
u64 *ptr = (u64 *)data;
|
|
int qw_size = nbytes / 8;
|
|
|
|
for (; qw_size > 0; qw_size--, ptr++)
|
|
write_csr(dd, what, *ptr);
|
|
}
|
|
|
|
/*
|
|
* Download the signature and start the RSA mechanism. Wait for
|
|
* RSA_ENGINE_TIMEOUT before giving up.
|
|
*/
|
|
static int run_rsa(struct hfi1_devdata *dd, const char *who,
|
|
const u8 *signature)
|
|
{
|
|
unsigned long timeout;
|
|
u64 reg;
|
|
u32 status;
|
|
int ret = 0;
|
|
|
|
/* write the signature */
|
|
write_rsa_data(dd, MISC_CFG_RSA_SIGNATURE, signature, KEY_SIZE);
|
|
|
|
/* initialize RSA */
|
|
write_csr(dd, MISC_CFG_RSA_CMD, RSA_CMD_INIT);
|
|
|
|
/*
|
|
* Make sure the engine is idle and insert a delay between the two
|
|
* writes to MISC_CFG_RSA_CMD.
|
|
*/
|
|
status = (read_csr(dd, MISC_CFG_FW_CTRL)
|
|
& MISC_CFG_FW_CTRL_RSA_STATUS_SMASK)
|
|
>> MISC_CFG_FW_CTRL_RSA_STATUS_SHIFT;
|
|
if (status != RSA_STATUS_IDLE) {
|
|
dd_dev_err(dd, "%s security engine not idle - giving up\n",
|
|
who);
|
|
return -EBUSY;
|
|
}
|
|
|
|
/* start RSA */
|
|
write_csr(dd, MISC_CFG_RSA_CMD, RSA_CMD_START);
|
|
|
|
/*
|
|
* Look for the result.
|
|
*
|
|
* The RSA engine is hooked up to two MISC errors. The driver
|
|
* masks these errors as they do not respond to the standard
|
|
* error "clear down" mechanism. Look for these errors here and
|
|
* clear them when possible. This routine will exit with the
|
|
* errors of the current run still set.
|
|
*
|
|
* MISC_FW_AUTH_FAILED_ERR
|
|
* Firmware authorization failed. This can be cleared by
|
|
* re-initializing the RSA engine, then clearing the status bit.
|
|
* Do not re-init the RSA angine immediately after a successful
|
|
* run - this will reset the current authorization.
|
|
*
|
|
* MISC_KEY_MISMATCH_ERR
|
|
* Key does not match. The only way to clear this is to load
|
|
* a matching key then clear the status bit. If this error
|
|
* is raised, it will persist outside of this routine until a
|
|
* matching key is loaded.
|
|
*/
|
|
timeout = msecs_to_jiffies(RSA_ENGINE_TIMEOUT) + jiffies;
|
|
while (1) {
|
|
status = (read_csr(dd, MISC_CFG_FW_CTRL)
|
|
& MISC_CFG_FW_CTRL_RSA_STATUS_SMASK)
|
|
>> MISC_CFG_FW_CTRL_RSA_STATUS_SHIFT;
|
|
|
|
if (status == RSA_STATUS_IDLE) {
|
|
/* should not happen */
|
|
dd_dev_err(dd, "%s firmware security bad idle state\n",
|
|
who);
|
|
ret = -EINVAL;
|
|
break;
|
|
} else if (status == RSA_STATUS_DONE) {
|
|
/* finished successfully */
|
|
break;
|
|
} else if (status == RSA_STATUS_FAILED) {
|
|
/* finished unsuccessfully */
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
/* else still active */
|
|
|
|
if (time_after(jiffies, timeout)) {
|
|
/*
|
|
* Timed out while active. We can't reset the engine
|
|
* if it is stuck active, but run through the
|
|
* error code to see what error bits are set.
|
|
*/
|
|
dd_dev_err(dd, "%s firmware security time out\n", who);
|
|
ret = -ETIMEDOUT;
|
|
break;
|
|
}
|
|
|
|
msleep(20);
|
|
}
|
|
|
|
/*
|
|
* Arrive here on success or failure. Clear all RSA engine
|
|
* errors. All current errors will stick - the RSA logic is keeping
|
|
* error high. All previous errors will clear - the RSA logic
|
|
* is not keeping the error high.
|
|
*/
|
|
write_csr(dd, MISC_ERR_CLEAR,
|
|
MISC_ERR_STATUS_MISC_FW_AUTH_FAILED_ERR_SMASK |
|
|
MISC_ERR_STATUS_MISC_KEY_MISMATCH_ERR_SMASK);
|
|
/*
|
|
* All that is left are the current errors. Print warnings on
|
|
* authorization failure details, if any. Firmware authorization
|
|
* can be retried, so these are only warnings.
|
|
*/
|
|
reg = read_csr(dd, MISC_ERR_STATUS);
|
|
if (ret) {
|
|
if (reg & MISC_ERR_STATUS_MISC_FW_AUTH_FAILED_ERR_SMASK)
|
|
dd_dev_warn(dd, "%s firmware authorization failed\n",
|
|
who);
|
|
if (reg & MISC_ERR_STATUS_MISC_KEY_MISMATCH_ERR_SMASK)
|
|
dd_dev_warn(dd, "%s firmware key mismatch\n", who);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void load_security_variables(struct hfi1_devdata *dd,
|
|
struct firmware_details *fdet)
|
|
{
|
|
/* Security variables a. Write the modulus */
|
|
write_rsa_data(dd, MISC_CFG_RSA_MODULUS, fdet->modulus, KEY_SIZE);
|
|
/* Security variables b. Write the r2 */
|
|
write_rsa_data(dd, MISC_CFG_RSA_R2, fdet->r2, KEY_SIZE);
|
|
/* Security variables c. Write the mu */
|
|
write_rsa_data(dd, MISC_CFG_RSA_MU, fdet->mu, MU_SIZE);
|
|
/* Security variables d. Write the header */
|
|
write_streamed_rsa_data(dd, MISC_CFG_SHA_PRELOAD,
|
|
(u8 *)fdet->css_header,
|
|
sizeof(struct css_header));
|
|
}
|
|
|
|
/* return the 8051 firmware state */
|
|
static inline u32 get_firmware_state(struct hfi1_devdata *dd)
|
|
{
|
|
u64 reg = read_csr(dd, DC_DC8051_STS_CUR_STATE);
|
|
|
|
return (reg >> DC_DC8051_STS_CUR_STATE_FIRMWARE_SHIFT)
|
|
& DC_DC8051_STS_CUR_STATE_FIRMWARE_MASK;
|
|
}
|
|
|
|
/*
|
|
* Wait until the firmware is up and ready to take host requests.
|
|
* Return 0 on success, -ETIMEDOUT on timeout.
|
|
*/
|
|
int wait_fm_ready(struct hfi1_devdata *dd, u32 mstimeout)
|
|
{
|
|
unsigned long timeout;
|
|
|
|
/* in the simulator, the fake 8051 is always ready */
|
|
if (dd->icode == ICODE_FUNCTIONAL_SIMULATOR)
|
|
return 0;
|
|
|
|
timeout = msecs_to_jiffies(mstimeout) + jiffies;
|
|
while (1) {
|
|
if (get_firmware_state(dd) == 0xa0) /* ready */
|
|
return 0;
|
|
if (time_after(jiffies, timeout)) /* timed out */
|
|
return -ETIMEDOUT;
|
|
usleep_range(1950, 2050); /* sleep 2ms-ish */
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Load the 8051 firmware.
|
|
*/
|
|
static int load_8051_firmware(struct hfi1_devdata *dd,
|
|
struct firmware_details *fdet)
|
|
{
|
|
u64 reg;
|
|
int ret;
|
|
u8 ver_major;
|
|
u8 ver_minor;
|
|
u8 ver_patch;
|
|
|
|
/*
|
|
* DC Reset sequence
|
|
* Load DC 8051 firmware
|
|
*/
|
|
/*
|
|
* DC reset step 1: Reset DC8051
|
|
*/
|
|
reg = DC_DC8051_CFG_RST_M8051W_SMASK
|
|
| DC_DC8051_CFG_RST_CRAM_SMASK
|
|
| DC_DC8051_CFG_RST_DRAM_SMASK
|
|
| DC_DC8051_CFG_RST_IRAM_SMASK
|
|
| DC_DC8051_CFG_RST_SFR_SMASK;
|
|
write_csr(dd, DC_DC8051_CFG_RST, reg);
|
|
|
|
/*
|
|
* DC reset step 2 (optional): Load 8051 data memory with link
|
|
* configuration
|
|
*/
|
|
|
|
/*
|
|
* DC reset step 3: Load DC8051 firmware
|
|
*/
|
|
/* release all but the core reset */
|
|
reg = DC_DC8051_CFG_RST_M8051W_SMASK;
|
|
write_csr(dd, DC_DC8051_CFG_RST, reg);
|
|
|
|
/* Firmware load step 1 */
|
|
load_security_variables(dd, fdet);
|
|
|
|
/*
|
|
* Firmware load step 2. Clear MISC_CFG_FW_CTRL.FW_8051_LOADED
|
|
*/
|
|
write_csr(dd, MISC_CFG_FW_CTRL, 0);
|
|
|
|
/* Firmware load steps 3-5 */
|
|
ret = write_8051(dd, 1/*code*/, 0, fdet->firmware_ptr,
|
|
fdet->firmware_len);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/*
|
|
* DC reset step 4. Host starts the DC8051 firmware
|
|
*/
|
|
/*
|
|
* Firmware load step 6. Set MISC_CFG_FW_CTRL.FW_8051_LOADED
|
|
*/
|
|
write_csr(dd, MISC_CFG_FW_CTRL, MISC_CFG_FW_CTRL_FW_8051_LOADED_SMASK);
|
|
|
|
/* Firmware load steps 7-10 */
|
|
ret = run_rsa(dd, "8051", fdet->signature);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* clear all reset bits, releasing the 8051 */
|
|
write_csr(dd, DC_DC8051_CFG_RST, 0ull);
|
|
|
|
/*
|
|
* DC reset step 5. Wait for firmware to be ready to accept host
|
|
* requests.
|
|
*/
|
|
ret = wait_fm_ready(dd, TIMEOUT_8051_START);
|
|
if (ret) { /* timed out */
|
|
dd_dev_err(dd, "8051 start timeout, current state 0x%x\n",
|
|
get_firmware_state(dd));
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
read_misc_status(dd, &ver_major, &ver_minor, &ver_patch);
|
|
dd_dev_info(dd, "8051 firmware version %d.%d.%d\n",
|
|
(int)ver_major, (int)ver_minor, (int)ver_patch);
|
|
dd->dc8051_ver = dc8051_ver(ver_major, ver_minor, ver_patch);
|
|
ret = write_host_interface_version(dd, HOST_INTERFACE_VERSION);
|
|
if (ret != HCMD_SUCCESS) {
|
|
dd_dev_err(dd,
|
|
"Failed to set host interface version, return 0x%x\n",
|
|
ret);
|
|
return -EIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Write the SBus request register
|
|
*
|
|
* No need for masking - the arguments are sized exactly.
|
|
*/
|
|
void sbus_request(struct hfi1_devdata *dd,
|
|
u8 receiver_addr, u8 data_addr, u8 command, u32 data_in)
|
|
{
|
|
write_csr(dd, ASIC_CFG_SBUS_REQUEST,
|
|
((u64)data_in << ASIC_CFG_SBUS_REQUEST_DATA_IN_SHIFT) |
|
|
((u64)command << ASIC_CFG_SBUS_REQUEST_COMMAND_SHIFT) |
|
|
((u64)data_addr << ASIC_CFG_SBUS_REQUEST_DATA_ADDR_SHIFT) |
|
|
((u64)receiver_addr <<
|
|
ASIC_CFG_SBUS_REQUEST_RECEIVER_ADDR_SHIFT));
|
|
}
|
|
|
|
/*
|
|
* Read a value from the SBus.
|
|
*
|
|
* Requires the caller to be in fast mode
|
|
*/
|
|
static u32 sbus_read(struct hfi1_devdata *dd, u8 receiver_addr, u8 data_addr,
|
|
u32 data_in)
|
|
{
|
|
u64 reg;
|
|
int retries;
|
|
int success = 0;
|
|
u32 result = 0;
|
|
u32 result_code = 0;
|
|
|
|
sbus_request(dd, receiver_addr, data_addr, READ_SBUS_RECEIVER, data_in);
|
|
|
|
for (retries = 0; retries < 100; retries++) {
|
|
usleep_range(1000, 1200); /* arbitrary */
|
|
reg = read_csr(dd, ASIC_STS_SBUS_RESULT);
|
|
result_code = (reg >> ASIC_STS_SBUS_RESULT_RESULT_CODE_SHIFT)
|
|
& ASIC_STS_SBUS_RESULT_RESULT_CODE_MASK;
|
|
if (result_code != SBUS_READ_COMPLETE)
|
|
continue;
|
|
|
|
success = 1;
|
|
result = (reg >> ASIC_STS_SBUS_RESULT_DATA_OUT_SHIFT)
|
|
& ASIC_STS_SBUS_RESULT_DATA_OUT_MASK;
|
|
break;
|
|
}
|
|
|
|
if (!success) {
|
|
dd_dev_err(dd, "%s: read failed, result code 0x%x\n", __func__,
|
|
result_code);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Turn off the SBus and fabric serdes spicos.
|
|
*
|
|
* + Must be called with Sbus fast mode turned on.
|
|
* + Must be called after fabric serdes broadcast is set up.
|
|
* + Must be called before the 8051 is loaded - assumes 8051 is not loaded
|
|
* when using MISC_CFG_FW_CTRL.
|
|
*/
|
|
static void turn_off_spicos(struct hfi1_devdata *dd, int flags)
|
|
{
|
|
/* only needed on A0 */
|
|
if (!is_ax(dd))
|
|
return;
|
|
|
|
dd_dev_info(dd, "Turning off spicos:%s%s\n",
|
|
flags & SPICO_SBUS ? " SBus" : "",
|
|
flags & SPICO_FABRIC ? " fabric" : "");
|
|
|
|
write_csr(dd, MISC_CFG_FW_CTRL, ENABLE_SPICO_SMASK);
|
|
/* disable SBus spico */
|
|
if (flags & SPICO_SBUS)
|
|
sbus_request(dd, SBUS_MASTER_BROADCAST, 0x01,
|
|
WRITE_SBUS_RECEIVER, 0x00000040);
|
|
|
|
/* disable the fabric serdes spicos */
|
|
if (flags & SPICO_FABRIC)
|
|
sbus_request(dd, fabric_serdes_broadcast[dd->hfi1_id],
|
|
0x07, WRITE_SBUS_RECEIVER, 0x00000000);
|
|
write_csr(dd, MISC_CFG_FW_CTRL, 0);
|
|
}
|
|
|
|
/*
|
|
* Reset all of the fabric serdes for this HFI in preparation to take the
|
|
* link to Polling.
|
|
*
|
|
* To do a reset, we need to write to to the serdes registers. Unfortunately,
|
|
* the fabric serdes download to the other HFI on the ASIC will have turned
|
|
* off the firmware validation on this HFI. This means we can't write to the
|
|
* registers to reset the serdes. Work around this by performing a complete
|
|
* re-download and validation of the fabric serdes firmware. This, as a
|
|
* by-product, will reset the serdes. NOTE: the re-download requires that
|
|
* the 8051 be in the Offline state. I.e. not actively trying to use the
|
|
* serdes. This routine is called at the point where the link is Offline and
|
|
* is getting ready to go to Polling.
|
|
*/
|
|
void fabric_serdes_reset(struct hfi1_devdata *dd)
|
|
{
|
|
int ret;
|
|
|
|
if (!fw_fabric_serdes_load)
|
|
return;
|
|
|
|
ret = acquire_chip_resource(dd, CR_SBUS, SBUS_TIMEOUT);
|
|
if (ret) {
|
|
dd_dev_err(dd,
|
|
"Cannot acquire SBus resource to reset fabric SerDes - perhaps you should reboot\n");
|
|
return;
|
|
}
|
|
set_sbus_fast_mode(dd);
|
|
|
|
if (is_ax(dd)) {
|
|
/* A0 serdes do not work with a re-download */
|
|
u8 ra = fabric_serdes_broadcast[dd->hfi1_id];
|
|
|
|
/* place SerDes in reset and disable SPICO */
|
|
sbus_request(dd, ra, 0x07, WRITE_SBUS_RECEIVER, 0x00000011);
|
|
/* wait 100 refclk cycles @ 156.25MHz => 640ns */
|
|
udelay(1);
|
|
/* remove SerDes reset */
|
|
sbus_request(dd, ra, 0x07, WRITE_SBUS_RECEIVER, 0x00000010);
|
|
/* turn SPICO enable on */
|
|
sbus_request(dd, ra, 0x07, WRITE_SBUS_RECEIVER, 0x00000002);
|
|
} else {
|
|
turn_off_spicos(dd, SPICO_FABRIC);
|
|
/*
|
|
* No need for firmware retry - what to download has already
|
|
* been decided.
|
|
* No need to pay attention to the load return - the only
|
|
* failure is a validation failure, which has already been
|
|
* checked by the initial download.
|
|
*/
|
|
(void)load_fabric_serdes_firmware(dd, &fw_fabric);
|
|
}
|
|
|
|
clear_sbus_fast_mode(dd);
|
|
release_chip_resource(dd, CR_SBUS);
|
|
}
|
|
|
|
/* Access to the SBus in this routine should probably be serialized */
|
|
int sbus_request_slow(struct hfi1_devdata *dd,
|
|
u8 receiver_addr, u8 data_addr, u8 command, u32 data_in)
|
|
{
|
|
u64 reg, count = 0;
|
|
|
|
/* make sure fast mode is clear */
|
|
clear_sbus_fast_mode(dd);
|
|
|
|
sbus_request(dd, receiver_addr, data_addr, command, data_in);
|
|
write_csr(dd, ASIC_CFG_SBUS_EXECUTE,
|
|
ASIC_CFG_SBUS_EXECUTE_EXECUTE_SMASK);
|
|
/* Wait for both DONE and RCV_DATA_VALID to go high */
|
|
reg = read_csr(dd, ASIC_STS_SBUS_RESULT);
|
|
while (!((reg & ASIC_STS_SBUS_RESULT_DONE_SMASK) &&
|
|
(reg & ASIC_STS_SBUS_RESULT_RCV_DATA_VALID_SMASK))) {
|
|
if (count++ >= SBUS_MAX_POLL_COUNT) {
|
|
u64 counts = read_csr(dd, ASIC_STS_SBUS_COUNTERS);
|
|
/*
|
|
* If the loop has timed out, we are OK if DONE bit
|
|
* is set and RCV_DATA_VALID and EXECUTE counters
|
|
* are the same. If not, we cannot proceed.
|
|
*/
|
|
if ((reg & ASIC_STS_SBUS_RESULT_DONE_SMASK) &&
|
|
(SBUS_COUNTER(counts, RCV_DATA_VALID) ==
|
|
SBUS_COUNTER(counts, EXECUTE)))
|
|
break;
|
|
return -ETIMEDOUT;
|
|
}
|
|
udelay(1);
|
|
reg = read_csr(dd, ASIC_STS_SBUS_RESULT);
|
|
}
|
|
count = 0;
|
|
write_csr(dd, ASIC_CFG_SBUS_EXECUTE, 0);
|
|
/* Wait for DONE to clear after EXECUTE is cleared */
|
|
reg = read_csr(dd, ASIC_STS_SBUS_RESULT);
|
|
while (reg & ASIC_STS_SBUS_RESULT_DONE_SMASK) {
|
|
if (count++ >= SBUS_MAX_POLL_COUNT)
|
|
return -ETIME;
|
|
udelay(1);
|
|
reg = read_csr(dd, ASIC_STS_SBUS_RESULT);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int load_fabric_serdes_firmware(struct hfi1_devdata *dd,
|
|
struct firmware_details *fdet)
|
|
{
|
|
int i, err;
|
|
const u8 ra = fabric_serdes_broadcast[dd->hfi1_id]; /* receiver addr */
|
|
|
|
dd_dev_info(dd, "Downloading fabric firmware\n");
|
|
|
|
/* step 1: load security variables */
|
|
load_security_variables(dd, fdet);
|
|
/* step 2: place SerDes in reset and disable SPICO */
|
|
sbus_request(dd, ra, 0x07, WRITE_SBUS_RECEIVER, 0x00000011);
|
|
/* wait 100 refclk cycles @ 156.25MHz => 640ns */
|
|
udelay(1);
|
|
/* step 3: remove SerDes reset */
|
|
sbus_request(dd, ra, 0x07, WRITE_SBUS_RECEIVER, 0x00000010);
|
|
/* step 4: assert IMEM override */
|
|
sbus_request(dd, ra, 0x00, WRITE_SBUS_RECEIVER, 0x40000000);
|
|
/* step 5: download SerDes machine code */
|
|
for (i = 0; i < fdet->firmware_len; i += 4) {
|
|
sbus_request(dd, ra, 0x0a, WRITE_SBUS_RECEIVER,
|
|
*(u32 *)&fdet->firmware_ptr[i]);
|
|
}
|
|
/* step 6: IMEM override off */
|
|
sbus_request(dd, ra, 0x00, WRITE_SBUS_RECEIVER, 0x00000000);
|
|
/* step 7: turn ECC on */
|
|
sbus_request(dd, ra, 0x0b, WRITE_SBUS_RECEIVER, 0x000c0000);
|
|
|
|
/* steps 8-11: run the RSA engine */
|
|
err = run_rsa(dd, "fabric serdes", fdet->signature);
|
|
if (err)
|
|
return err;
|
|
|
|
/* step 12: turn SPICO enable on */
|
|
sbus_request(dd, ra, 0x07, WRITE_SBUS_RECEIVER, 0x00000002);
|
|
/* step 13: enable core hardware interrupts */
|
|
sbus_request(dd, ra, 0x08, WRITE_SBUS_RECEIVER, 0x00000000);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int load_sbus_firmware(struct hfi1_devdata *dd,
|
|
struct firmware_details *fdet)
|
|
{
|
|
int i, err;
|
|
const u8 ra = SBUS_MASTER_BROADCAST; /* receiver address */
|
|
|
|
dd_dev_info(dd, "Downloading SBus firmware\n");
|
|
|
|
/* step 1: load security variables */
|
|
load_security_variables(dd, fdet);
|
|
/* step 2: place SPICO into reset and enable off */
|
|
sbus_request(dd, ra, 0x01, WRITE_SBUS_RECEIVER, 0x000000c0);
|
|
/* step 3: remove reset, enable off, IMEM_CNTRL_EN on */
|
|
sbus_request(dd, ra, 0x01, WRITE_SBUS_RECEIVER, 0x00000240);
|
|
/* step 4: set starting IMEM address for burst download */
|
|
sbus_request(dd, ra, 0x03, WRITE_SBUS_RECEIVER, 0x80000000);
|
|
/* step 5: download the SBus Master machine code */
|
|
for (i = 0; i < fdet->firmware_len; i += 4) {
|
|
sbus_request(dd, ra, 0x14, WRITE_SBUS_RECEIVER,
|
|
*(u32 *)&fdet->firmware_ptr[i]);
|
|
}
|
|
/* step 6: set IMEM_CNTL_EN off */
|
|
sbus_request(dd, ra, 0x01, WRITE_SBUS_RECEIVER, 0x00000040);
|
|
/* step 7: turn ECC on */
|
|
sbus_request(dd, ra, 0x16, WRITE_SBUS_RECEIVER, 0x000c0000);
|
|
|
|
/* steps 8-11: run the RSA engine */
|
|
err = run_rsa(dd, "SBus", fdet->signature);
|
|
if (err)
|
|
return err;
|
|
|
|
/* step 12: set SPICO_ENABLE on */
|
|
sbus_request(dd, ra, 0x01, WRITE_SBUS_RECEIVER, 0x00000140);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int load_pcie_serdes_firmware(struct hfi1_devdata *dd,
|
|
struct firmware_details *fdet)
|
|
{
|
|
int i;
|
|
const u8 ra = SBUS_MASTER_BROADCAST; /* receiver address */
|
|
|
|
dd_dev_info(dd, "Downloading PCIe firmware\n");
|
|
|
|
/* step 1: load security variables */
|
|
load_security_variables(dd, fdet);
|
|
/* step 2: assert single step (halts the SBus Master spico) */
|
|
sbus_request(dd, ra, 0x05, WRITE_SBUS_RECEIVER, 0x00000001);
|
|
/* step 3: enable XDMEM access */
|
|
sbus_request(dd, ra, 0x01, WRITE_SBUS_RECEIVER, 0x00000d40);
|
|
/* step 4: load firmware into SBus Master XDMEM */
|
|
/*
|
|
* NOTE: the dmem address, write_en, and wdata are all pre-packed,
|
|
* we only need to pick up the bytes and write them
|
|
*/
|
|
for (i = 0; i < fdet->firmware_len; i += 4) {
|
|
sbus_request(dd, ra, 0x04, WRITE_SBUS_RECEIVER,
|
|
*(u32 *)&fdet->firmware_ptr[i]);
|
|
}
|
|
/* step 5: disable XDMEM access */
|
|
sbus_request(dd, ra, 0x01, WRITE_SBUS_RECEIVER, 0x00000140);
|
|
/* step 6: allow SBus Spico to run */
|
|
sbus_request(dd, ra, 0x05, WRITE_SBUS_RECEIVER, 0x00000000);
|
|
|
|
/*
|
|
* steps 7-11: run RSA, if it succeeds, firmware is available to
|
|
* be swapped
|
|
*/
|
|
return run_rsa(dd, "PCIe serdes", fdet->signature);
|
|
}
|
|
|
|
/*
|
|
* Set the given broadcast values on the given list of devices.
|
|
*/
|
|
static void set_serdes_broadcast(struct hfi1_devdata *dd, u8 bg1, u8 bg2,
|
|
const u8 *addrs, int count)
|
|
{
|
|
while (--count >= 0) {
|
|
/*
|
|
* Set BROADCAST_GROUP_1 and BROADCAST_GROUP_2, leave
|
|
* defaults for everything else. Do not read-modify-write,
|
|
* per instruction from the manufacturer.
|
|
*
|
|
* Register 0xfd:
|
|
* bits what
|
|
* ----- ---------------------------------
|
|
* 0 IGNORE_BROADCAST (default 0)
|
|
* 11:4 BROADCAST_GROUP_1 (default 0xff)
|
|
* 23:16 BROADCAST_GROUP_2 (default 0xff)
|
|
*/
|
|
sbus_request(dd, addrs[count], 0xfd, WRITE_SBUS_RECEIVER,
|
|
(u32)bg1 << 4 | (u32)bg2 << 16);
|
|
}
|
|
}
|
|
|
|
int acquire_hw_mutex(struct hfi1_devdata *dd)
|
|
{
|
|
unsigned long timeout;
|
|
int try = 0;
|
|
u8 mask = 1 << dd->hfi1_id;
|
|
u8 user = (u8)read_csr(dd, ASIC_CFG_MUTEX);
|
|
|
|
if (user == mask) {
|
|
dd_dev_info(dd,
|
|
"Hardware mutex already acquired, mutex mask %u\n",
|
|
(u32)mask);
|
|
return 0;
|
|
}
|
|
|
|
retry:
|
|
timeout = msecs_to_jiffies(HM_TIMEOUT) + jiffies;
|
|
while (1) {
|
|
write_csr(dd, ASIC_CFG_MUTEX, mask);
|
|
user = (u8)read_csr(dd, ASIC_CFG_MUTEX);
|
|
if (user == mask)
|
|
return 0; /* success */
|
|
if (time_after(jiffies, timeout))
|
|
break; /* timed out */
|
|
msleep(20);
|
|
}
|
|
|
|
/* timed out */
|
|
dd_dev_err(dd,
|
|
"Unable to acquire hardware mutex, mutex mask %u, my mask %u (%s)\n",
|
|
(u32)user, (u32)mask, (try == 0) ? "retrying" : "giving up");
|
|
|
|
if (try == 0) {
|
|
/* break mutex and retry */
|
|
write_csr(dd, ASIC_CFG_MUTEX, 0);
|
|
try++;
|
|
goto retry;
|
|
}
|
|
|
|
return -EBUSY;
|
|
}
|
|
|
|
void release_hw_mutex(struct hfi1_devdata *dd)
|
|
{
|
|
u8 mask = 1 << dd->hfi1_id;
|
|
u8 user = (u8)read_csr(dd, ASIC_CFG_MUTEX);
|
|
|
|
if (user != mask)
|
|
dd_dev_warn(dd,
|
|
"Unable to release hardware mutex, mutex mask %u, my mask %u\n",
|
|
(u32)user, (u32)mask);
|
|
else
|
|
write_csr(dd, ASIC_CFG_MUTEX, 0);
|
|
}
|
|
|
|
/* return the given resource bit(s) as a mask for the given HFI */
|
|
static inline u64 resource_mask(u32 hfi1_id, u32 resource)
|
|
{
|
|
return ((u64)resource) << (hfi1_id ? CR_DYN_SHIFT : 0);
|
|
}
|
|
|
|
static void fail_mutex_acquire_message(struct hfi1_devdata *dd,
|
|
const char *func)
|
|
{
|
|
dd_dev_err(dd,
|
|
"%s: hardware mutex stuck - suggest rebooting the machine\n",
|
|
func);
|
|
}
|
|
|
|
/*
|
|
* Acquire access to a chip resource.
|
|
*
|
|
* Return 0 on success, -EBUSY if resource busy, -EIO if mutex acquire failed.
|
|
*/
|
|
static int __acquire_chip_resource(struct hfi1_devdata *dd, u32 resource)
|
|
{
|
|
u64 scratch0, all_bits, my_bit;
|
|
int ret;
|
|
|
|
if (resource & CR_DYN_MASK) {
|
|
/* a dynamic resource is in use if either HFI has set the bit */
|
|
if (dd->pcidev->device == PCI_DEVICE_ID_INTEL0 &&
|
|
(resource & (CR_I2C1 | CR_I2C2))) {
|
|
/* discrete devices must serialize across both chains */
|
|
all_bits = resource_mask(0, CR_I2C1 | CR_I2C2) |
|
|
resource_mask(1, CR_I2C1 | CR_I2C2);
|
|
} else {
|
|
all_bits = resource_mask(0, resource) |
|
|
resource_mask(1, resource);
|
|
}
|
|
my_bit = resource_mask(dd->hfi1_id, resource);
|
|
} else {
|
|
/* non-dynamic resources are not split between HFIs */
|
|
all_bits = resource;
|
|
my_bit = resource;
|
|
}
|
|
|
|
/* lock against other callers within the driver wanting a resource */
|
|
mutex_lock(&dd->asic_data->asic_resource_mutex);
|
|
|
|
ret = acquire_hw_mutex(dd);
|
|
if (ret) {
|
|
fail_mutex_acquire_message(dd, __func__);
|
|
ret = -EIO;
|
|
goto done;
|
|
}
|
|
|
|
scratch0 = read_csr(dd, ASIC_CFG_SCRATCH);
|
|
if (scratch0 & all_bits) {
|
|
ret = -EBUSY;
|
|
} else {
|
|
write_csr(dd, ASIC_CFG_SCRATCH, scratch0 | my_bit);
|
|
/* force write to be visible to other HFI on another OS */
|
|
(void)read_csr(dd, ASIC_CFG_SCRATCH);
|
|
}
|
|
|
|
release_hw_mutex(dd);
|
|
|
|
done:
|
|
mutex_unlock(&dd->asic_data->asic_resource_mutex);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Acquire access to a chip resource, wait up to mswait milliseconds for
|
|
* the resource to become available.
|
|
*
|
|
* Return 0 on success, -EBUSY if busy (even after wait), -EIO if mutex
|
|
* acquire failed.
|
|
*/
|
|
int acquire_chip_resource(struct hfi1_devdata *dd, u32 resource, u32 mswait)
|
|
{
|
|
unsigned long timeout;
|
|
int ret;
|
|
|
|
timeout = jiffies + msecs_to_jiffies(mswait);
|
|
while (1) {
|
|
ret = __acquire_chip_resource(dd, resource);
|
|
if (ret != -EBUSY)
|
|
return ret;
|
|
/* resource is busy, check our timeout */
|
|
if (time_after_eq(jiffies, timeout))
|
|
return -EBUSY;
|
|
usleep_range(80, 120); /* arbitrary delay */
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Release access to a chip resource
|
|
*/
|
|
void release_chip_resource(struct hfi1_devdata *dd, u32 resource)
|
|
{
|
|
u64 scratch0, bit;
|
|
|
|
/* only dynamic resources should ever be cleared */
|
|
if (!(resource & CR_DYN_MASK)) {
|
|
dd_dev_err(dd, "%s: invalid resource 0x%x\n", __func__,
|
|
resource);
|
|
return;
|
|
}
|
|
bit = resource_mask(dd->hfi1_id, resource);
|
|
|
|
/* lock against other callers within the driver wanting a resource */
|
|
mutex_lock(&dd->asic_data->asic_resource_mutex);
|
|
|
|
if (acquire_hw_mutex(dd)) {
|
|
fail_mutex_acquire_message(dd, __func__);
|
|
goto done;
|
|
}
|
|
|
|
scratch0 = read_csr(dd, ASIC_CFG_SCRATCH);
|
|
if ((scratch0 & bit) != 0) {
|
|
scratch0 &= ~bit;
|
|
write_csr(dd, ASIC_CFG_SCRATCH, scratch0);
|
|
/* force write to be visible to other HFI on another OS */
|
|
(void)read_csr(dd, ASIC_CFG_SCRATCH);
|
|
} else {
|
|
dd_dev_warn(dd, "%s: id %d, resource 0x%x: bit not set\n",
|
|
__func__, dd->hfi1_id, resource);
|
|
}
|
|
|
|
release_hw_mutex(dd);
|
|
|
|
done:
|
|
mutex_unlock(&dd->asic_data->asic_resource_mutex);
|
|
}
|
|
|
|
/*
|
|
* Return true if resource is set, false otherwise. Print a warning
|
|
* if not set and a function is supplied.
|
|
*/
|
|
bool check_chip_resource(struct hfi1_devdata *dd, u32 resource,
|
|
const char *func)
|
|
{
|
|
u64 scratch0, bit;
|
|
|
|
if (resource & CR_DYN_MASK)
|
|
bit = resource_mask(dd->hfi1_id, resource);
|
|
else
|
|
bit = resource;
|
|
|
|
scratch0 = read_csr(dd, ASIC_CFG_SCRATCH);
|
|
if ((scratch0 & bit) == 0) {
|
|
if (func)
|
|
dd_dev_warn(dd,
|
|
"%s: id %d, resource 0x%x, not acquired!\n",
|
|
func, dd->hfi1_id, resource);
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static void clear_chip_resources(struct hfi1_devdata *dd, const char *func)
|
|
{
|
|
u64 scratch0;
|
|
|
|
/* lock against other callers within the driver wanting a resource */
|
|
mutex_lock(&dd->asic_data->asic_resource_mutex);
|
|
|
|
if (acquire_hw_mutex(dd)) {
|
|
fail_mutex_acquire_message(dd, func);
|
|
goto done;
|
|
}
|
|
|
|
/* clear all dynamic access bits for this HFI */
|
|
scratch0 = read_csr(dd, ASIC_CFG_SCRATCH);
|
|
scratch0 &= ~resource_mask(dd->hfi1_id, CR_DYN_MASK);
|
|
write_csr(dd, ASIC_CFG_SCRATCH, scratch0);
|
|
/* force write to be visible to other HFI on another OS */
|
|
(void)read_csr(dd, ASIC_CFG_SCRATCH);
|
|
|
|
release_hw_mutex(dd);
|
|
|
|
done:
|
|
mutex_unlock(&dd->asic_data->asic_resource_mutex);
|
|
}
|
|
|
|
void init_chip_resources(struct hfi1_devdata *dd)
|
|
{
|
|
/* clear any holds left by us */
|
|
clear_chip_resources(dd, __func__);
|
|
}
|
|
|
|
void finish_chip_resources(struct hfi1_devdata *dd)
|
|
{
|
|
/* clear any holds left by us */
|
|
clear_chip_resources(dd, __func__);
|
|
}
|
|
|
|
void set_sbus_fast_mode(struct hfi1_devdata *dd)
|
|
{
|
|
write_csr(dd, ASIC_CFG_SBUS_EXECUTE,
|
|
ASIC_CFG_SBUS_EXECUTE_FAST_MODE_SMASK);
|
|
}
|
|
|
|
void clear_sbus_fast_mode(struct hfi1_devdata *dd)
|
|
{
|
|
u64 reg, count = 0;
|
|
|
|
reg = read_csr(dd, ASIC_STS_SBUS_COUNTERS);
|
|
while (SBUS_COUNTER(reg, EXECUTE) !=
|
|
SBUS_COUNTER(reg, RCV_DATA_VALID)) {
|
|
if (count++ >= SBUS_MAX_POLL_COUNT)
|
|
break;
|
|
udelay(1);
|
|
reg = read_csr(dd, ASIC_STS_SBUS_COUNTERS);
|
|
}
|
|
write_csr(dd, ASIC_CFG_SBUS_EXECUTE, 0);
|
|
}
|
|
|
|
int load_firmware(struct hfi1_devdata *dd)
|
|
{
|
|
int ret;
|
|
|
|
if (fw_fabric_serdes_load) {
|
|
ret = acquire_chip_resource(dd, CR_SBUS, SBUS_TIMEOUT);
|
|
if (ret)
|
|
return ret;
|
|
|
|
set_sbus_fast_mode(dd);
|
|
|
|
set_serdes_broadcast(dd, all_fabric_serdes_broadcast,
|
|
fabric_serdes_broadcast[dd->hfi1_id],
|
|
fabric_serdes_addrs[dd->hfi1_id],
|
|
NUM_FABRIC_SERDES);
|
|
turn_off_spicos(dd, SPICO_FABRIC);
|
|
do {
|
|
ret = load_fabric_serdes_firmware(dd, &fw_fabric);
|
|
} while (retry_firmware(dd, ret));
|
|
|
|
clear_sbus_fast_mode(dd);
|
|
release_chip_resource(dd, CR_SBUS);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
if (fw_8051_load) {
|
|
do {
|
|
ret = load_8051_firmware(dd, &fw_8051);
|
|
} while (retry_firmware(dd, ret));
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
dump_fw_version(dd);
|
|
return 0;
|
|
}
|
|
|
|
int hfi1_firmware_init(struct hfi1_devdata *dd)
|
|
{
|
|
/* only RTL can use these */
|
|
if (dd->icode != ICODE_RTL_SILICON) {
|
|
fw_fabric_serdes_load = 0;
|
|
fw_pcie_serdes_load = 0;
|
|
fw_sbus_load = 0;
|
|
}
|
|
|
|
/* no 8051 or QSFP on simulator */
|
|
if (dd->icode == ICODE_FUNCTIONAL_SIMULATOR)
|
|
fw_8051_load = 0;
|
|
|
|
if (!fw_8051_name) {
|
|
if (dd->icode == ICODE_RTL_SILICON)
|
|
fw_8051_name = DEFAULT_FW_8051_NAME_ASIC;
|
|
else
|
|
fw_8051_name = DEFAULT_FW_8051_NAME_FPGA;
|
|
}
|
|
if (!fw_fabric_serdes_name)
|
|
fw_fabric_serdes_name = DEFAULT_FW_FABRIC_NAME;
|
|
if (!fw_sbus_name)
|
|
fw_sbus_name = DEFAULT_FW_SBUS_NAME;
|
|
if (!fw_pcie_serdes_name)
|
|
fw_pcie_serdes_name = DEFAULT_FW_PCIE_NAME;
|
|
|
|
return obtain_firmware(dd);
|
|
}
|
|
|
|
/*
|
|
* This function is a helper function for parse_platform_config(...) and
|
|
* does not check for validity of the platform configuration cache
|
|
* (because we know it is invalid as we are building up the cache).
|
|
* As such, this should not be called from anywhere other than
|
|
* parse_platform_config
|
|
*/
|
|
static int check_meta_version(struct hfi1_devdata *dd, u32 *system_table)
|
|
{
|
|
u32 meta_ver, meta_ver_meta, ver_start, ver_len, mask;
|
|
struct platform_config_cache *pcfgcache = &dd->pcfg_cache;
|
|
|
|
if (!system_table)
|
|
return -EINVAL;
|
|
|
|
meta_ver_meta =
|
|
*(pcfgcache->config_tables[PLATFORM_CONFIG_SYSTEM_TABLE].table_metadata
|
|
+ SYSTEM_TABLE_META_VERSION);
|
|
|
|
mask = ((1 << METADATA_TABLE_FIELD_START_LEN_BITS) - 1);
|
|
ver_start = meta_ver_meta & mask;
|
|
|
|
meta_ver_meta >>= METADATA_TABLE_FIELD_LEN_SHIFT;
|
|
|
|
mask = ((1 << METADATA_TABLE_FIELD_LEN_LEN_BITS) - 1);
|
|
ver_len = meta_ver_meta & mask;
|
|
|
|
ver_start /= 8;
|
|
meta_ver = *((u8 *)system_table + ver_start) & ((1 << ver_len) - 1);
|
|
|
|
if (meta_ver < 4) {
|
|
dd_dev_info(
|
|
dd, "%s:Please update platform config\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int parse_platform_config(struct hfi1_devdata *dd)
|
|
{
|
|
struct platform_config_cache *pcfgcache = &dd->pcfg_cache;
|
|
struct hfi1_pportdata *ppd = dd->pport;
|
|
u32 *ptr = NULL;
|
|
u32 header1 = 0, header2 = 0, magic_num = 0, crc = 0, file_length = 0;
|
|
u32 record_idx = 0, table_type = 0, table_length_dwords = 0;
|
|
int ret = -EINVAL; /* assume failure */
|
|
|
|
/*
|
|
* For integrated devices that did not fall back to the default file,
|
|
* the SI tuning information for active channels is acquired from the
|
|
* scratch register bitmap, thus there is no platform config to parse.
|
|
* Skip parsing in these situations.
|
|
*/
|
|
if (ppd->config_from_scratch)
|
|
return 0;
|
|
|
|
if (!dd->platform_config.data) {
|
|
dd_dev_err(dd, "%s: Missing config file\n", __func__);
|
|
goto bail;
|
|
}
|
|
ptr = (u32 *)dd->platform_config.data;
|
|
|
|
magic_num = *ptr;
|
|
ptr++;
|
|
if (magic_num != PLATFORM_CONFIG_MAGIC_NUM) {
|
|
dd_dev_err(dd, "%s: Bad config file\n", __func__);
|
|
goto bail;
|
|
}
|
|
|
|
/* Field is file size in DWORDs */
|
|
file_length = (*ptr) * 4;
|
|
|
|
/*
|
|
* Length can't be larger than partition size. Assume platform
|
|
* config format version 4 is being used. Interpret the file size
|
|
* field as header instead by not moving the pointer.
|
|
*/
|
|
if (file_length > MAX_PLATFORM_CONFIG_FILE_SIZE) {
|
|
dd_dev_info(dd,
|
|
"%s:File length out of bounds, using alternative format\n",
|
|
__func__);
|
|
file_length = PLATFORM_CONFIG_FORMAT_4_FILE_SIZE;
|
|
} else {
|
|
ptr++;
|
|
}
|
|
|
|
if (file_length > dd->platform_config.size) {
|
|
dd_dev_info(dd, "%s:File claims to be larger than read size\n",
|
|
__func__);
|
|
goto bail;
|
|
} else if (file_length < dd->platform_config.size) {
|
|
dd_dev_info(dd,
|
|
"%s:File claims to be smaller than read size, continuing\n",
|
|
__func__);
|
|
}
|
|
/* exactly equal, perfection */
|
|
|
|
/*
|
|
* In both cases where we proceed, using the self-reported file length
|
|
* is the safer option. In case of old format a predefined value is
|
|
* being used.
|
|
*/
|
|
while (ptr < (u32 *)(dd->platform_config.data + file_length)) {
|
|
header1 = *ptr;
|
|
header2 = *(ptr + 1);
|
|
if (header1 != ~header2) {
|
|
dd_dev_err(dd, "%s: Failed validation at offset %ld\n",
|
|
__func__, (ptr - (u32 *)
|
|
dd->platform_config.data));
|
|
goto bail;
|
|
}
|
|
|
|
record_idx = *ptr &
|
|
((1 << PLATFORM_CONFIG_HEADER_RECORD_IDX_LEN_BITS) - 1);
|
|
|
|
table_length_dwords = (*ptr >>
|
|
PLATFORM_CONFIG_HEADER_TABLE_LENGTH_SHIFT) &
|
|
((1 << PLATFORM_CONFIG_HEADER_TABLE_LENGTH_LEN_BITS) - 1);
|
|
|
|
table_type = (*ptr >> PLATFORM_CONFIG_HEADER_TABLE_TYPE_SHIFT) &
|
|
((1 << PLATFORM_CONFIG_HEADER_TABLE_TYPE_LEN_BITS) - 1);
|
|
|
|
/* Done with this set of headers */
|
|
ptr += 2;
|
|
|
|
if (record_idx) {
|
|
/* data table */
|
|
switch (table_type) {
|
|
case PLATFORM_CONFIG_SYSTEM_TABLE:
|
|
pcfgcache->config_tables[table_type].num_table =
|
|
1;
|
|
ret = check_meta_version(dd, ptr);
|
|
if (ret)
|
|
goto bail;
|
|
break;
|
|
case PLATFORM_CONFIG_PORT_TABLE:
|
|
pcfgcache->config_tables[table_type].num_table =
|
|
2;
|
|
break;
|
|
case PLATFORM_CONFIG_RX_PRESET_TABLE:
|
|
/* fall through */
|
|
case PLATFORM_CONFIG_TX_PRESET_TABLE:
|
|
/* fall through */
|
|
case PLATFORM_CONFIG_QSFP_ATTEN_TABLE:
|
|
/* fall through */
|
|
case PLATFORM_CONFIG_VARIABLE_SETTINGS_TABLE:
|
|
pcfgcache->config_tables[table_type].num_table =
|
|
table_length_dwords;
|
|
break;
|
|
default:
|
|
dd_dev_err(dd,
|
|
"%s: Unknown data table %d, offset %ld\n",
|
|
__func__, table_type,
|
|
(ptr - (u32 *)
|
|
dd->platform_config.data));
|
|
goto bail; /* We don't trust this file now */
|
|
}
|
|
pcfgcache->config_tables[table_type].table = ptr;
|
|
} else {
|
|
/* metadata table */
|
|
switch (table_type) {
|
|
case PLATFORM_CONFIG_SYSTEM_TABLE:
|
|
/* fall through */
|
|
case PLATFORM_CONFIG_PORT_TABLE:
|
|
/* fall through */
|
|
case PLATFORM_CONFIG_RX_PRESET_TABLE:
|
|
/* fall through */
|
|
case PLATFORM_CONFIG_TX_PRESET_TABLE:
|
|
/* fall through */
|
|
case PLATFORM_CONFIG_QSFP_ATTEN_TABLE:
|
|
/* fall through */
|
|
case PLATFORM_CONFIG_VARIABLE_SETTINGS_TABLE:
|
|
break;
|
|
default:
|
|
dd_dev_err(dd,
|
|
"%s: Unknown meta table %d, offset %ld\n",
|
|
__func__, table_type,
|
|
(ptr -
|
|
(u32 *)dd->platform_config.data));
|
|
goto bail; /* We don't trust this file now */
|
|
}
|
|
pcfgcache->config_tables[table_type].table_metadata =
|
|
ptr;
|
|
}
|
|
|
|
/* Calculate and check table crc */
|
|
crc = crc32_le(~(u32)0, (unsigned char const *)ptr,
|
|
(table_length_dwords * 4));
|
|
crc ^= ~(u32)0;
|
|
|
|
/* Jump the table */
|
|
ptr += table_length_dwords;
|
|
if (crc != *ptr) {
|
|
dd_dev_err(dd, "%s: Failed CRC check at offset %ld\n",
|
|
__func__, (ptr -
|
|
(u32 *)dd->platform_config.data));
|
|
goto bail;
|
|
}
|
|
/* Jump the CRC DWORD */
|
|
ptr++;
|
|
}
|
|
|
|
pcfgcache->cache_valid = 1;
|
|
return 0;
|
|
bail:
|
|
memset(pcfgcache, 0, sizeof(struct platform_config_cache));
|
|
return ret;
|
|
}
|
|
|
|
static void get_integrated_platform_config_field(
|
|
struct hfi1_devdata *dd,
|
|
enum platform_config_table_type_encoding table_type,
|
|
int field_index, u32 *data)
|
|
{
|
|
struct hfi1_pportdata *ppd = dd->pport;
|
|
u8 *cache = ppd->qsfp_info.cache;
|
|
u32 tx_preset = 0;
|
|
|
|
switch (table_type) {
|
|
case PLATFORM_CONFIG_SYSTEM_TABLE:
|
|
if (field_index == SYSTEM_TABLE_QSFP_POWER_CLASS_MAX)
|
|
*data = ppd->max_power_class;
|
|
else if (field_index == SYSTEM_TABLE_QSFP_ATTENUATION_DEFAULT_25G)
|
|
*data = ppd->default_atten;
|
|
break;
|
|
case PLATFORM_CONFIG_PORT_TABLE:
|
|
if (field_index == PORT_TABLE_PORT_TYPE)
|
|
*data = ppd->port_type;
|
|
else if (field_index == PORT_TABLE_LOCAL_ATTEN_25G)
|
|
*data = ppd->local_atten;
|
|
else if (field_index == PORT_TABLE_REMOTE_ATTEN_25G)
|
|
*data = ppd->remote_atten;
|
|
break;
|
|
case PLATFORM_CONFIG_RX_PRESET_TABLE:
|
|
if (field_index == RX_PRESET_TABLE_QSFP_RX_CDR_APPLY)
|
|
*data = (ppd->rx_preset & QSFP_RX_CDR_APPLY_SMASK) >>
|
|
QSFP_RX_CDR_APPLY_SHIFT;
|
|
else if (field_index == RX_PRESET_TABLE_QSFP_RX_EMP_APPLY)
|
|
*data = (ppd->rx_preset & QSFP_RX_EMP_APPLY_SMASK) >>
|
|
QSFP_RX_EMP_APPLY_SHIFT;
|
|
else if (field_index == RX_PRESET_TABLE_QSFP_RX_AMP_APPLY)
|
|
*data = (ppd->rx_preset & QSFP_RX_AMP_APPLY_SMASK) >>
|
|
QSFP_RX_AMP_APPLY_SHIFT;
|
|
else if (field_index == RX_PRESET_TABLE_QSFP_RX_CDR)
|
|
*data = (ppd->rx_preset & QSFP_RX_CDR_SMASK) >>
|
|
QSFP_RX_CDR_SHIFT;
|
|
else if (field_index == RX_PRESET_TABLE_QSFP_RX_EMP)
|
|
*data = (ppd->rx_preset & QSFP_RX_EMP_SMASK) >>
|
|
QSFP_RX_EMP_SHIFT;
|
|
else if (field_index == RX_PRESET_TABLE_QSFP_RX_AMP)
|
|
*data = (ppd->rx_preset & QSFP_RX_AMP_SMASK) >>
|
|
QSFP_RX_AMP_SHIFT;
|
|
break;
|
|
case PLATFORM_CONFIG_TX_PRESET_TABLE:
|
|
if (cache[QSFP_EQ_INFO_OFFS] & 0x4)
|
|
tx_preset = ppd->tx_preset_eq;
|
|
else
|
|
tx_preset = ppd->tx_preset_noeq;
|
|
if (field_index == TX_PRESET_TABLE_PRECUR)
|
|
*data = (tx_preset & TX_PRECUR_SMASK) >>
|
|
TX_PRECUR_SHIFT;
|
|
else if (field_index == TX_PRESET_TABLE_ATTN)
|
|
*data = (tx_preset & TX_ATTN_SMASK) >>
|
|
TX_ATTN_SHIFT;
|
|
else if (field_index == TX_PRESET_TABLE_POSTCUR)
|
|
*data = (tx_preset & TX_POSTCUR_SMASK) >>
|
|
TX_POSTCUR_SHIFT;
|
|
else if (field_index == TX_PRESET_TABLE_QSFP_TX_CDR_APPLY)
|
|
*data = (tx_preset & QSFP_TX_CDR_APPLY_SMASK) >>
|
|
QSFP_TX_CDR_APPLY_SHIFT;
|
|
else if (field_index == TX_PRESET_TABLE_QSFP_TX_EQ_APPLY)
|
|
*data = (tx_preset & QSFP_TX_EQ_APPLY_SMASK) >>
|
|
QSFP_TX_EQ_APPLY_SHIFT;
|
|
else if (field_index == TX_PRESET_TABLE_QSFP_TX_CDR)
|
|
*data = (tx_preset & QSFP_TX_CDR_SMASK) >>
|
|
QSFP_TX_CDR_SHIFT;
|
|
else if (field_index == TX_PRESET_TABLE_QSFP_TX_EQ)
|
|
*data = (tx_preset & QSFP_TX_EQ_SMASK) >>
|
|
QSFP_TX_EQ_SHIFT;
|
|
break;
|
|
case PLATFORM_CONFIG_QSFP_ATTEN_TABLE:
|
|
case PLATFORM_CONFIG_VARIABLE_SETTINGS_TABLE:
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int get_platform_fw_field_metadata(struct hfi1_devdata *dd, int table,
|
|
int field, u32 *field_len_bits,
|
|
u32 *field_start_bits)
|
|
{
|
|
struct platform_config_cache *pcfgcache = &dd->pcfg_cache;
|
|
u32 *src_ptr = NULL;
|
|
|
|
if (!pcfgcache->cache_valid)
|
|
return -EINVAL;
|
|
|
|
switch (table) {
|
|
case PLATFORM_CONFIG_SYSTEM_TABLE:
|
|
/* fall through */
|
|
case PLATFORM_CONFIG_PORT_TABLE:
|
|
/* fall through */
|
|
case PLATFORM_CONFIG_RX_PRESET_TABLE:
|
|
/* fall through */
|
|
case PLATFORM_CONFIG_TX_PRESET_TABLE:
|
|
/* fall through */
|
|
case PLATFORM_CONFIG_QSFP_ATTEN_TABLE:
|
|
/* fall through */
|
|
case PLATFORM_CONFIG_VARIABLE_SETTINGS_TABLE:
|
|
if (field && field < platform_config_table_limits[table])
|
|
src_ptr =
|
|
pcfgcache->config_tables[table].table_metadata + field;
|
|
break;
|
|
default:
|
|
dd_dev_info(dd, "%s: Unknown table\n", __func__);
|
|
break;
|
|
}
|
|
|
|
if (!src_ptr)
|
|
return -EINVAL;
|
|
|
|
if (field_start_bits)
|
|
*field_start_bits = *src_ptr &
|
|
((1 << METADATA_TABLE_FIELD_START_LEN_BITS) - 1);
|
|
|
|
if (field_len_bits)
|
|
*field_len_bits = (*src_ptr >> METADATA_TABLE_FIELD_LEN_SHIFT)
|
|
& ((1 << METADATA_TABLE_FIELD_LEN_LEN_BITS) - 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* This is the central interface to getting data out of the platform config
|
|
* file. It depends on parse_platform_config() having populated the
|
|
* platform_config_cache in hfi1_devdata, and checks the cache_valid member to
|
|
* validate the sanity of the cache.
|
|
*
|
|
* The non-obvious parameters:
|
|
* @table_index: Acts as a look up key into which instance of the tables the
|
|
* relevant field is fetched from.
|
|
*
|
|
* This applies to the data tables that have multiple instances. The port table
|
|
* is an exception to this rule as each HFI only has one port and thus the
|
|
* relevant table can be distinguished by hfi_id.
|
|
*
|
|
* @data: pointer to memory that will be populated with the field requested.
|
|
* @len: length of memory pointed by @data in bytes.
|
|
*/
|
|
int get_platform_config_field(struct hfi1_devdata *dd,
|
|
enum platform_config_table_type_encoding
|
|
table_type, int table_index, int field_index,
|
|
u32 *data, u32 len)
|
|
{
|
|
int ret = 0, wlen = 0, seek = 0;
|
|
u32 field_len_bits = 0, field_start_bits = 0, *src_ptr = NULL;
|
|
struct platform_config_cache *pcfgcache = &dd->pcfg_cache;
|
|
struct hfi1_pportdata *ppd = dd->pport;
|
|
|
|
if (data)
|
|
memset(data, 0, len);
|
|
else
|
|
return -EINVAL;
|
|
|
|
if (ppd->config_from_scratch) {
|
|
/*
|
|
* Use saved configuration from ppd for integrated platforms
|
|
*/
|
|
get_integrated_platform_config_field(dd, table_type,
|
|
field_index, data);
|
|
return 0;
|
|
}
|
|
|
|
ret = get_platform_fw_field_metadata(dd, table_type, field_index,
|
|
&field_len_bits,
|
|
&field_start_bits);
|
|
if (ret)
|
|
return -EINVAL;
|
|
|
|
/* Convert length to bits */
|
|
len *= 8;
|
|
|
|
/* Our metadata function checked cache_valid and field_index for us */
|
|
switch (table_type) {
|
|
case PLATFORM_CONFIG_SYSTEM_TABLE:
|
|
src_ptr = pcfgcache->config_tables[table_type].table;
|
|
|
|
if (field_index != SYSTEM_TABLE_QSFP_POWER_CLASS_MAX) {
|
|
if (len < field_len_bits)
|
|
return -EINVAL;
|
|
|
|
seek = field_start_bits / 8;
|
|
wlen = field_len_bits / 8;
|
|
|
|
src_ptr = (u32 *)((u8 *)src_ptr + seek);
|
|
|
|
/*
|
|
* We expect the field to be byte aligned and whole byte
|
|
* lengths if we are here
|
|
*/
|
|
memcpy(data, src_ptr, wlen);
|
|
return 0;
|
|
}
|
|
break;
|
|
case PLATFORM_CONFIG_PORT_TABLE:
|
|
/* Port table is 4 DWORDS */
|
|
src_ptr = dd->hfi1_id ?
|
|
pcfgcache->config_tables[table_type].table + 4 :
|
|
pcfgcache->config_tables[table_type].table;
|
|
break;
|
|
case PLATFORM_CONFIG_RX_PRESET_TABLE:
|
|
/* fall through */
|
|
case PLATFORM_CONFIG_TX_PRESET_TABLE:
|
|
/* fall through */
|
|
case PLATFORM_CONFIG_QSFP_ATTEN_TABLE:
|
|
/* fall through */
|
|
case PLATFORM_CONFIG_VARIABLE_SETTINGS_TABLE:
|
|
src_ptr = pcfgcache->config_tables[table_type].table;
|
|
|
|
if (table_index <
|
|
pcfgcache->config_tables[table_type].num_table)
|
|
src_ptr += table_index;
|
|
else
|
|
src_ptr = NULL;
|
|
break;
|
|
default:
|
|
dd_dev_info(dd, "%s: Unknown table\n", __func__);
|
|
break;
|
|
}
|
|
|
|
if (!src_ptr || len < field_len_bits)
|
|
return -EINVAL;
|
|
|
|
src_ptr += (field_start_bits / 32);
|
|
*data = (*src_ptr >> (field_start_bits % 32)) &
|
|
((1 << field_len_bits) - 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Download the firmware needed for the Gen3 PCIe SerDes. An update
|
|
* to the SBus firmware is needed before updating the PCIe firmware.
|
|
*
|
|
* Note: caller must be holding the SBus resource.
|
|
*/
|
|
int load_pcie_firmware(struct hfi1_devdata *dd)
|
|
{
|
|
int ret = 0;
|
|
|
|
/* both firmware loads below use the SBus */
|
|
set_sbus_fast_mode(dd);
|
|
|
|
if (fw_sbus_load) {
|
|
turn_off_spicos(dd, SPICO_SBUS);
|
|
do {
|
|
ret = load_sbus_firmware(dd, &fw_sbus);
|
|
} while (retry_firmware(dd, ret));
|
|
if (ret)
|
|
goto done;
|
|
}
|
|
|
|
if (fw_pcie_serdes_load) {
|
|
dd_dev_info(dd, "Setting PCIe SerDes broadcast\n");
|
|
set_serdes_broadcast(dd, all_pcie_serdes_broadcast,
|
|
pcie_serdes_broadcast[dd->hfi1_id],
|
|
pcie_serdes_addrs[dd->hfi1_id],
|
|
NUM_PCIE_SERDES);
|
|
do {
|
|
ret = load_pcie_serdes_firmware(dd, &fw_pcie);
|
|
} while (retry_firmware(dd, ret));
|
|
if (ret)
|
|
goto done;
|
|
}
|
|
|
|
done:
|
|
clear_sbus_fast_mode(dd);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Read the GUID from the hardware, store it in dd.
|
|
*/
|
|
void read_guid(struct hfi1_devdata *dd)
|
|
{
|
|
/* Take the DC out of reset to get a valid GUID value */
|
|
write_csr(dd, CCE_DC_CTRL, 0);
|
|
(void)read_csr(dd, CCE_DC_CTRL);
|
|
|
|
dd->base_guid = read_csr(dd, DC_DC8051_CFG_LOCAL_GUID);
|
|
dd_dev_info(dd, "GUID %llx",
|
|
(unsigned long long)dd->base_guid);
|
|
}
|
|
|
|
/* read and display firmware version info */
|
|
static void dump_fw_version(struct hfi1_devdata *dd)
|
|
{
|
|
u32 pcie_vers[NUM_PCIE_SERDES];
|
|
u32 fabric_vers[NUM_FABRIC_SERDES];
|
|
u32 sbus_vers;
|
|
int i;
|
|
int all_same;
|
|
int ret;
|
|
u8 rcv_addr;
|
|
|
|
ret = acquire_chip_resource(dd, CR_SBUS, SBUS_TIMEOUT);
|
|
if (ret) {
|
|
dd_dev_err(dd, "Unable to acquire SBus to read firmware versions\n");
|
|
return;
|
|
}
|
|
|
|
/* set fast mode */
|
|
set_sbus_fast_mode(dd);
|
|
|
|
/* read version for SBus Master */
|
|
sbus_request(dd, SBUS_MASTER_BROADCAST, 0x02, WRITE_SBUS_RECEIVER, 0);
|
|
sbus_request(dd, SBUS_MASTER_BROADCAST, 0x07, WRITE_SBUS_RECEIVER, 0x1);
|
|
/* wait for interrupt to be processed */
|
|
usleep_range(10000, 11000);
|
|
sbus_vers = sbus_read(dd, SBUS_MASTER_BROADCAST, 0x08, 0x1);
|
|
dd_dev_info(dd, "SBus Master firmware version 0x%08x\n", sbus_vers);
|
|
|
|
/* read version for PCIe SerDes */
|
|
all_same = 1;
|
|
pcie_vers[0] = 0;
|
|
for (i = 0; i < NUM_PCIE_SERDES; i++) {
|
|
rcv_addr = pcie_serdes_addrs[dd->hfi1_id][i];
|
|
sbus_request(dd, rcv_addr, 0x03, WRITE_SBUS_RECEIVER, 0);
|
|
/* wait for interrupt to be processed */
|
|
usleep_range(10000, 11000);
|
|
pcie_vers[i] = sbus_read(dd, rcv_addr, 0x04, 0x0);
|
|
if (i > 0 && pcie_vers[0] != pcie_vers[i])
|
|
all_same = 0;
|
|
}
|
|
|
|
if (all_same) {
|
|
dd_dev_info(dd, "PCIe SerDes firmware version 0x%x\n",
|
|
pcie_vers[0]);
|
|
} else {
|
|
dd_dev_warn(dd, "PCIe SerDes do not have the same firmware version\n");
|
|
for (i = 0; i < NUM_PCIE_SERDES; i++) {
|
|
dd_dev_info(dd,
|
|
"PCIe SerDes lane %d firmware version 0x%x\n",
|
|
i, pcie_vers[i]);
|
|
}
|
|
}
|
|
|
|
/* read version for fabric SerDes */
|
|
all_same = 1;
|
|
fabric_vers[0] = 0;
|
|
for (i = 0; i < NUM_FABRIC_SERDES; i++) {
|
|
rcv_addr = fabric_serdes_addrs[dd->hfi1_id][i];
|
|
sbus_request(dd, rcv_addr, 0x03, WRITE_SBUS_RECEIVER, 0);
|
|
/* wait for interrupt to be processed */
|
|
usleep_range(10000, 11000);
|
|
fabric_vers[i] = sbus_read(dd, rcv_addr, 0x04, 0x0);
|
|
if (i > 0 && fabric_vers[0] != fabric_vers[i])
|
|
all_same = 0;
|
|
}
|
|
|
|
if (all_same) {
|
|
dd_dev_info(dd, "Fabric SerDes firmware version 0x%x\n",
|
|
fabric_vers[0]);
|
|
} else {
|
|
dd_dev_warn(dd, "Fabric SerDes do not have the same firmware version\n");
|
|
for (i = 0; i < NUM_FABRIC_SERDES; i++) {
|
|
dd_dev_info(dd,
|
|
"Fabric SerDes lane %d firmware version 0x%x\n",
|
|
i, fabric_vers[i]);
|
|
}
|
|
}
|
|
|
|
clear_sbus_fast_mode(dd);
|
|
release_chip_resource(dd, CR_SBUS);
|
|
}
|