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Add the mlxfw module for Mellanox firmware flash process 

The mlxfw module is in charge of common logic needed to flash Mellanox
devices firmware, which consists of:
 - Parse the Mellanox Firmware Archive version 2 (MFA2) format, which is
   the format used to store the Mellanox firmware. The MFA2 format file can
   hold firmware for many different silicon variants, differentiated by a
   unique ID called PSID. In addition, the MFA2 file data section is
   compressed using xz compression to save both file-system space and
   memory at extraction time.
 - Implement the firmware flash state machine logic, which is a common
   logic for Mellanox products needed to flash the firmware to the device.

As the module is shared between different Mellanox products, it defines a
set of callbacks to be implemented by the specific driver for hardware
interaction.

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yotam Gigi 2017-05-23 21:56:23 +02:00 committed by David S. Miller
parent ff5f58f53c
commit 410ed13cae
14 changed files with 1537 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
MAINTAINERS
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@ -8330,6 +8330,14 @@ W: http://www.mellanox.com
Q: http://patchwork.ozlabs.org/project/netdev/list/
F: drivers/net/ethernet/mellanox/mlxsw/
MELLANOX FIRMWARE FLASH LIBRARY (mlxfw)
M: Yotam Gigi <yotamg@mellanox.com>
L: netdev@vger.kernel.org
S: Supported
W: http://www.mellanox.com
Q: http://patchwork.ozlabs.org/project/netdev/list/
F: drivers/net/ethernet/mellanox/mlxfw/
MELLANOX MLXCPLD I2C AND MUX DRIVER
M: Vadim Pasternak <vadimp@mellanox.com>
M: Michael Shych <michaelsh@mellanox.com>

1
drivers/net/ethernet/mellanox/Kconfig
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@ -19,5 +19,6 @@ if NET_VENDOR_MELLANOX
source "drivers/net/ethernet/mellanox/mlx4/Kconfig"
source "drivers/net/ethernet/mellanox/mlx5/core/Kconfig"
source "drivers/net/ethernet/mellanox/mlxsw/Kconfig"
source "drivers/net/ethernet/mellanox/mlxfw/Kconfig"
endif # NET_VENDOR_MELLANOX

1
drivers/net/ethernet/mellanox/Makefile
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@ -5,3 +5,4 @@
obj-$(CONFIG_MLX4_CORE) += mlx4/
obj-$(CONFIG_MLX5_CORE) += mlx5/core/
obj-$(CONFIG_MLXSW_CORE) += mlxsw/
obj-$(CONFIG_MLXFW) += mlxfw/

6
drivers/net/ethernet/mellanox/mlxfw/Kconfig Normal file
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@ -0,0 +1,6 @@
#
# Mellanox firmware flash library configuration
#
config MLXFW
tristate "mlxfw" if COMPILE_TEST

2
drivers/net/ethernet/mellanox/mlxfw/Makefile Normal file
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@ -0,0 +1,2 @@
obj-$(CONFIG_MLXFW) += mlxfw.o
mlxfw-objs := mlxfw_fsm.o mlxfw_mfa2_tlv_multi.o mlxfw_mfa2.o

102
drivers/net/ethernet/mellanox/mlxfw/mlxfw.h Normal file
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@ -0,0 +1,102 @@
/*
* drivers/net/ethernet/mellanox/mlxfw/mlxfw.h
* Copyright (c) 2017 Mellanox Technologies. All rights reserved.
* Copyright (c) 2017 Yotam Gigi <yotamg@mellanox.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _MLXFW_H
#define _MLXFW_H
#include <linux/firmware.h>
enum mlxfw_fsm_state {
MLXFW_FSM_STATE_IDLE,
MLXFW_FSM_STATE_LOCKED,
MLXFW_FSM_STATE_INITIALIZE,
MLXFW_FSM_STATE_DOWNLOAD,
MLXFW_FSM_STATE_VERIFY,
MLXFW_FSM_STATE_APPLY,
MLXFW_FSM_STATE_ACTIVATE,
};
enum mlxfw_fsm_state_err {
MLXFW_FSM_STATE_ERR_OK,
MLXFW_FSM_STATE_ERR_ERROR,
MLXFW_FSM_STATE_ERR_REJECTED_DIGEST_ERR,
MLXFW_FSM_STATE_ERR_REJECTED_NOT_APPLICABLE,
MLXFW_FSM_STATE_ERR_REJECTED_UNKNOWN_KEY,
MLXFW_FSM_STATE_ERR_REJECTED_AUTH_FAILED,
MLXFW_FSM_STATE_ERR_REJECTED_UNSIGNED,
MLXFW_FSM_STATE_ERR_REJECTED_KEY_NOT_APPLICABLE,
MLXFW_FSM_STATE_ERR_REJECTED_BAD_FORMAT,
MLXFW_FSM_STATE_ERR_BLOCKED_PENDING_RESET,
MLXFW_FSM_STATE_ERR_MAX,
};
struct mlxfw_dev;
struct mlxfw_dev_ops {
int (*component_query)(struct mlxfw_dev *mlxfw_dev, u16 component_index,
u32 *p_max_size, u8 *p_align_bits,
u16 *p_max_write_size);
int (*fsm_lock)(struct mlxfw_dev *mlxfw_dev, u32 *fwhandle);
int (*fsm_component_update)(struct mlxfw_dev *mlxfw_dev, u32 fwhandle,
u16 component_index, u32 component_size);
int (*fsm_block_download)(struct mlxfw_dev *mlxfw_dev, u32 fwhandle,
u8 *data, u16 size, u32 offset);
int (*fsm_component_verify)(struct mlxfw_dev *mlxfw_dev, u32 fwhandle,
u16 component_index);
int (*fsm_activate)(struct mlxfw_dev *mlxfw_dev, u32 fwhandle);
int (*fsm_query_state)(struct mlxfw_dev *mlxfw_dev, u32 fwhandle,
enum mlxfw_fsm_state *fsm_state,
enum mlxfw_fsm_state_err *fsm_state_err);
void (*fsm_cancel)(struct mlxfw_dev *mlxfw_dev, u32 fwhandle);
void (*fsm_release)(struct mlxfw_dev *mlxfw_dev, u32 fwhandle);
};
struct mlxfw_dev {
const struct mlxfw_dev_ops *ops;
const char *psid;
u16 psid_size;
};
int mlxfw_firmware_flash(struct mlxfw_dev *mlxfw_dev,
const struct firmware *firmware);
#endif

273
drivers/net/ethernet/mellanox/mlxfw/mlxfw_fsm.c Normal file
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@ -0,0 +1,273 @@
/*
* drivers/net/ethernet/mellanox/mlxfw/mlxfw.c
* Copyright (c) 2017 Mellanox Technologies. All rights reserved.
* Copyright (c) 2017 Yotam Gigi <yotamg@mellanox.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#define pr_fmt(fmt) "mlxfw: " fmt
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/delay.h>
#include "mlxfw.h"
#include "mlxfw_mfa2.h"
#define MLXFW_FSM_STATE_WAIT_CYCLE_MS 200
#define MLXFW_FSM_STATE_WAIT_TIMEOUT_MS 30000
#define MLXFW_FSM_STATE_WAIT_ROUNDS \
(MLXFW_FSM_STATE_WAIT_TIMEOUT_MS / MLXFW_FSM_STATE_WAIT_CYCLE_MS)
#define MLXFW_FSM_MAX_COMPONENT_SIZE (10 * (1 << 20))
static const char * const mlxfw_fsm_state_err_str[] = {
[MLXFW_FSM_STATE_ERR_ERROR] =
"general error",
[MLXFW_FSM_STATE_ERR_REJECTED_DIGEST_ERR] =
"component hash mismatch",
[MLXFW_FSM_STATE_ERR_REJECTED_NOT_APPLICABLE] =
"component not applicable",
[MLXFW_FSM_STATE_ERR_REJECTED_UNKNOWN_KEY] =
"unknown key",
[MLXFW_FSM_STATE_ERR_REJECTED_AUTH_FAILED] =
"authentication failed",
[MLXFW_FSM_STATE_ERR_REJECTED_UNSIGNED] =
"component was not signed",
[MLXFW_FSM_STATE_ERR_REJECTED_KEY_NOT_APPLICABLE] =
"key not applicable",
[MLXFW_FSM_STATE_ERR_REJECTED_BAD_FORMAT] =
"bad format",
[MLXFW_FSM_STATE_ERR_BLOCKED_PENDING_RESET] =
"pending reset",
[MLXFW_FSM_STATE_ERR_MAX] =
"unknown error"
};
static int mlxfw_fsm_state_wait(struct mlxfw_dev *mlxfw_dev, u32 fwhandle,
enum mlxfw_fsm_state fsm_state)
{
enum mlxfw_fsm_state_err fsm_state_err;
enum mlxfw_fsm_state curr_fsm_state;
int times;
int err;
times = MLXFW_FSM_STATE_WAIT_ROUNDS;
retry:
err = mlxfw_dev->ops->fsm_query_state(mlxfw_dev, fwhandle,
&curr_fsm_state, &fsm_state_err);
if (err)
return err;
if (fsm_state_err != MLXFW_FSM_STATE_ERR_OK) {
pr_err("Firmware flash failed: %s\n",
mlxfw_fsm_state_err_str[fsm_state_err]);
return -EINVAL;
}
if (curr_fsm_state != fsm_state) {
if (--times == 0) {
pr_err("Timeout reached on FSM state change");
return -ETIMEDOUT;
}
msleep(MLXFW_FSM_STATE_WAIT_CYCLE_MS);
goto retry;
}
return 0;
}
#define MLXFW_ALIGN_DOWN(x, align_bits) ((x) & ~((1 << (align_bits)) - 1))
#define MLXFW_ALIGN_UP(x, align_bits) \
MLXFW_ALIGN_DOWN((x) + ((1 << (align_bits)) - 1), (align_bits))
static int mlxfw_flash_component(struct mlxfw_dev *mlxfw_dev,
u32 fwhandle,
struct mlxfw_mfa2_component *comp)
{
u16 comp_max_write_size;
u8 comp_align_bits;
u32 comp_max_size;
u16 block_size;
u8 *block_ptr;
u32 offset;
int err;
err = mlxfw_dev->ops->component_query(mlxfw_dev, comp->index,
&comp_max_size, &comp_align_bits,
&comp_max_write_size);
if (err)
return err;
comp_max_size = min_t(u32, comp_max_size, MLXFW_FSM_MAX_COMPONENT_SIZE);
if (comp->data_size > comp_max_size) {
pr_err("Component %d is of size %d which is bigger than limit %d\n",
comp->index, comp->data_size, comp_max_size);
return -EINVAL;
}
comp_max_write_size = MLXFW_ALIGN_DOWN(comp_max_write_size,
comp_align_bits);
pr_debug("Component update\n");
err = mlxfw_dev->ops->fsm_component_update(mlxfw_dev, fwhandle,
comp->index,
comp->data_size);
if (err)
return err;
err = mlxfw_fsm_state_wait(mlxfw_dev, fwhandle,
MLXFW_FSM_STATE_DOWNLOAD);
if (err)
goto err_out;
pr_debug("Component download\n");
for (offset = 0;
offset < MLXFW_ALIGN_UP(comp->data_size, comp_align_bits);
offset += comp_max_write_size) {
block_ptr = comp->data + offset;
block_size = (u16) min_t(u32, comp->data_size - offset,
comp_max_write_size);
err = mlxfw_dev->ops->fsm_block_download(mlxfw_dev, fwhandle,
block_ptr, block_size,
offset);
if (err)
goto err_out;
}
pr_debug("Component verify\n");
err = mlxfw_dev->ops->fsm_component_verify(mlxfw_dev, fwhandle,
comp->index);
if (err)
goto err_out;
err = mlxfw_fsm_state_wait(mlxfw_dev, fwhandle, MLXFW_FSM_STATE_LOCKED);
if (err)
goto err_out;
return 0;
err_out:
mlxfw_dev->ops->fsm_cancel(mlxfw_dev, fwhandle);
return err;
}
static int mlxfw_flash_components(struct mlxfw_dev *mlxfw_dev, u32 fwhandle,
struct mlxfw_mfa2_file *mfa2_file)
{
u32 component_count;
int err;
int i;
err = mlxfw_mfa2_file_component_count(mfa2_file, mlxfw_dev->psid,
mlxfw_dev->psid_size,
&component_count);
if (err) {
pr_err("Could not find device PSID in MFA2 file\n");
return err;
}
for (i = 0; i < component_count; i++) {
struct mlxfw_mfa2_component *comp;
comp = mlxfw_mfa2_file_component_get(mfa2_file, mlxfw_dev->psid,
mlxfw_dev->psid_size, i);
if (IS_ERR(comp))
return PTR_ERR(comp);
pr_info("Flashing component type %d\n", comp->index);
err = mlxfw_flash_component(mlxfw_dev, fwhandle, comp);
mlxfw_mfa2_file_component_put(comp);
if (err)
return err;
}
return 0;
}
int mlxfw_firmware_flash(struct mlxfw_dev *mlxfw_dev,
const struct firmware *firmware)
{
struct mlxfw_mfa2_file *mfa2_file;
u32 fwhandle;
int err;
if (!mlxfw_mfa2_check(firmware)) {
pr_err("Firmware file is not MFA2\n");
return -EINVAL;
}
mfa2_file = mlxfw_mfa2_file_init(firmware);
if (IS_ERR(mfa2_file))
return PTR_ERR(mfa2_file);
pr_info("Initialize firmware flash process\n");
err = mlxfw_dev->ops->fsm_lock(mlxfw_dev, &fwhandle);
if (err) {
pr_err("Could not lock the firmware FSM\n");
goto err_fsm_lock;
}
err = mlxfw_fsm_state_wait(mlxfw_dev, fwhandle,
MLXFW_FSM_STATE_LOCKED);
if (err)
goto err_state_wait_idle_to_locked;
err = mlxfw_flash_components(mlxfw_dev, fwhandle, mfa2_file);
if (err)
goto err_flash_components;
pr_debug("Activate image\n");
err = mlxfw_dev->ops->fsm_activate(mlxfw_dev, fwhandle);
if (err) {
pr_err("Could not activate the downloaded image\n");
goto err_fsm_activate;
}
err = mlxfw_fsm_state_wait(mlxfw_dev, fwhandle, MLXFW_FSM_STATE_LOCKED);
if (err)
goto err_state_wait_activate_to_locked;
pr_debug("Handle release\n");
mlxfw_dev->ops->fsm_release(mlxfw_dev, fwhandle);
pr_info("Firmware flash done.\n");
mlxfw_mfa2_file_fini(mfa2_file);
return 0;
err_state_wait_activate_to_locked:
err_fsm_activate:
err_flash_components:
err_state_wait_idle_to_locked:
mlxfw_dev->ops->fsm_release(mlxfw_dev, fwhandle);
err_fsm_lock:
mlxfw_mfa2_file_fini(mfa2_file);
return err;
}
EXPORT_SYMBOL(mlxfw_firmware_flash);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Yotam Gigi <yotamg@mellanox.com>");
MODULE_DESCRIPTION("Mellanox firmware flash lib");

620
drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2.c Normal file
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@ -0,0 +1,620 @@
/*
* drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2.c
* Copyright (c) 2017 Mellanox Technologies. All rights reserved.
* Copyright (c) 2017 Yotam Gigi <yotamg@mellanox.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#define pr_fmt(fmt) "mlxfw_mfa2: " fmt
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/netlink.h>
#include <linux/xz.h>
#include "mlxfw_mfa2.h"
#include "mlxfw_mfa2_file.h"
#include "mlxfw_mfa2_tlv.h"
#include "mlxfw_mfa2_format.h"
#include "mlxfw_mfa2_tlv_multi.h"
/* MFA2 FILE
* +----------------------------------+
* | MFA2 finger print |
* +----------------------------------+
* | package descriptor multi_tlv |
* | +------------------------------+ | +-----------------+
* | | package descriptor tlv +-----> |num_devices=n |
* | +------------------------------+ | |num_components=m |
* +----------------------------------+ |CB offset |
* | device descriptor multi_tlv | |... |
* | +------------------------------+ | | |
* | | PSID tlv | | +-----------------+
* | +------------------------------+ |
* | | component index tlv | |
* | +------------------------------+ |
* +----------------------------------+
* | component descriptor multi_tlv |
* | +------------------------------+ | +-----------------+
* | | component descriptor tlv +-----> |Among others: |
* | +------------------------------+ | |CB offset=o |
* +----------------------------------+ |comp index=i |
* | | |... |
* | | | |
* | | +-----------------+
* | COMPONENT BLOCK (CB) |
* | |
* | |
* | |
* +----------------------------------+
*
* On the top level, an MFA2 file contains:
* - Fingerprint
* - Several multi_tlvs (TLVs of type MLXFW_MFA2_TLV_MULTI, as defined in
* mlxfw_mfa2_format.h)
* - Compresses content block
*
* The first multi_tlv
* -------------------
* The first multi TLV is treated as package descriptor, and expected to have a
* first TLV child of type MLXFW_MFA2_TLV_PACKAGE_DESCRIPTOR which contains all
* the global information needed to parse the file. Among others, it contains
* the number of device descriptors and component descriptor following this
* multi TLV.
*
* The device descriptor multi_tlv
* -------------------------------
* The multi TLVs following the package descriptor are treated as device
* descriptor, and are expected to have the following children:
* - PSID TLV child of type MLXFW_MFA2_TLV_PSID containing that device PSID.
* - Component index of type MLXFW_MFA2_TLV_COMPONENT_PTR that contains that
* device component index.
*
* The component descriptor multi_tlv
* ----------------------------------
* The multi TLVs following the device descriptor multi TLVs are treated as
* component descriptor, and are expected to have a first child of type
* MLXFW_MFA2_TLV_COMPONENT_DESCRIPTOR that contains mostly the component index,
* needed for the flash process and the offset to the binary within the
* component block.
*/
static const u8 mlxfw_mfa2_fingerprint[] = "MLNX.MFA2.XZ.00!";
static const int mlxfw_mfa2_fingerprint_len =
sizeof(mlxfw_mfa2_fingerprint) - 1;
static const u8 mlxfw_mfa2_comp_magic[] = "#BIN.COMPONENT!#";
static const int mlxfw_mfa2_comp_magic_len = sizeof(mlxfw_mfa2_comp_magic) - 1;
bool mlxfw_mfa2_check(const struct firmware *fw)
{
if (fw->size < sizeof(mlxfw_mfa2_fingerprint))
return false;
return memcmp(fw->data, mlxfw_mfa2_fingerprint,
mlxfw_mfa2_fingerprint_len) == 0;
}
static bool
mlxfw_mfa2_tlv_multi_validate(const struct mlxfw_mfa2_file *mfa2_file,
const struct mlxfw_mfa2_tlv_multi *multi)
{
const struct mlxfw_mfa2_tlv *tlv;
u16 idx;
/* Check that all children are valid */
mlxfw_mfa2_tlv_multi_foreach(mfa2_file, tlv, idx, multi) {
if (!tlv) {
pr_err("Multi has invalid child");
return false;
}
}
return true;
}
static bool
mlxfw_mfa2_file_dev_validate(const struct mlxfw_mfa2_file *mfa2_file,
const struct mlxfw_mfa2_tlv *dev_tlv,
u16 dev_idx)
{
const struct mlxfw_mfa2_tlv_component_ptr *cptr;
const struct mlxfw_mfa2_tlv_multi *multi;
const struct mlxfw_mfa2_tlv_psid *psid;
const struct mlxfw_mfa2_tlv *tlv;
u16 cptr_count;
u16 cptr_idx;
int err;
pr_debug("Device %d\n", dev_idx);
multi = mlxfw_mfa2_tlv_multi_get(mfa2_file, dev_tlv);
if (!multi) {
pr_err("Device %d is not a valid TLV error\n", dev_idx);
return false;
}
if (!mlxfw_mfa2_tlv_multi_validate(mfa2_file, multi))
return false;
/* Validate the device has PSID tlv */
tlv = mlxfw_mfa2_tlv_multi_child_find(mfa2_file, multi,
MLXFW_MFA2_TLV_PSID, 0);
if (!tlv) {
pr_err("Device %d does not have PSID\n", dev_idx);
return false;
}
psid = mlxfw_mfa2_tlv_psid_get(mfa2_file, tlv);
if (!psid) {
pr_err("Device %d PSID TLV is not valid\n", dev_idx);
return false;
}
print_hex_dump_debug(" -- Device PSID ", DUMP_PREFIX_NONE, 16, 16,
psid->psid, be16_to_cpu(tlv->len), true);
/* Validate the device has COMPONENT_PTR */
err = mlxfw_mfa2_tlv_multi_child_count(mfa2_file, multi,
MLXFW_MFA2_TLV_COMPONENT_PTR,
&cptr_count);
if (err)
return false;
if (cptr_count == 0) {
pr_err("Device %d has no components\n", dev_idx);
return false;
}
for (cptr_idx = 0; cptr_idx < cptr_count; cptr_idx++) {
tlv = mlxfw_mfa2_tlv_multi_child_find(mfa2_file, multi,
MLXFW_MFA2_TLV_COMPONENT_PTR,
cptr_idx);
if (!tlv)
return false;
cptr = mlxfw_mfa2_tlv_component_ptr_get(mfa2_file, tlv);
if (!cptr) {
pr_err("Device %d COMPONENT_PTR TLV is not valid\n",
dev_idx);
return false;
}
pr_debug(" -- Component index %d\n",
be16_to_cpu(cptr->component_index));
}
return true;
}
static bool
mlxfw_mfa2_file_comp_validate(const struct mlxfw_mfa2_file *mfa2_file,
const struct mlxfw_mfa2_tlv *comp_tlv,
u16 comp_idx)
{
const struct mlxfw_mfa2_tlv_component_descriptor *cdesc;
const struct mlxfw_mfa2_tlv_multi *multi;
const struct mlxfw_mfa2_tlv *tlv;
pr_debug("Component %d\n", comp_idx);
multi = mlxfw_mfa2_tlv_multi_get(mfa2_file, comp_tlv);
if (!multi) {
pr_err("Component %d is not a valid TLV error\n", comp_idx);
return false;
}
if (!mlxfw_mfa2_tlv_multi_validate(mfa2_file, multi))
return false;
/* Check that component have COMPONENT_DESCRIPTOR as first child */
tlv = mlxfw_mfa2_tlv_multi_child(mfa2_file, multi);
if (!tlv) {
pr_err("Component descriptor %d multi TLV error\n", comp_idx);
return false;
}
cdesc = mlxfw_mfa2_tlv_component_descriptor_get(mfa2_file, tlv);
if (!cdesc) {
pr_err("Component %d does not have a valid descriptor\n",
comp_idx);
return false;
}
pr_debug(" -- Component type %d\n", be16_to_cpu(cdesc->identifier));
pr_debug(" -- Offset 0x%llx and size %d\n",
((u64) be32_to_cpu(cdesc->cb_offset_h) << 32)
| be32_to_cpu(cdesc->cb_offset_l), be32_to_cpu(cdesc->size));
return true;
}
static bool mlxfw_mfa2_file_validate(const struct mlxfw_mfa2_file *mfa2_file)
{
const struct mlxfw_mfa2_tlv *tlv;
u16 idx;
pr_debug("Validating file\n");
/* check that all the devices exist */
mlxfw_mfa2_tlv_foreach(mfa2_file, tlv, idx, mfa2_file->first_dev,
mfa2_file->dev_count) {
if (!tlv) {
pr_err("Device TLV error\n");
return false;
}
/* Check each device */
if (!mlxfw_mfa2_file_dev_validate(mfa2_file, tlv, idx))
return false;
}
/* check that all the components exist */
mlxfw_mfa2_tlv_foreach(mfa2_file, tlv, idx, mfa2_file->first_component,
mfa2_file->component_count) {
if (!tlv) {
pr_err("Device TLV error\n");
return false;
}
/* Check each component */
if (!mlxfw_mfa2_file_comp_validate(mfa2_file, tlv, idx))
return false;
}
return true;
}
struct mlxfw_mfa2_file *mlxfw_mfa2_file_init(const struct firmware *fw)
{
const struct mlxfw_mfa2_tlv_package_descriptor *pd;
const struct mlxfw_mfa2_tlv_multi *multi;
const struct mlxfw_mfa2_tlv *multi_child;
const struct mlxfw_mfa2_tlv *first_tlv;
struct mlxfw_mfa2_file *mfa2_file;
const void *first_tlv_ptr;
const void *cb_top_ptr;
mfa2_file = kcalloc(1, sizeof(*mfa2_file), GFP_KERNEL);
if (!mfa2_file)
return ERR_PTR(-ENOMEM);
mfa2_file->fw = fw;
first_tlv_ptr = fw->data + NLA_ALIGN(mlxfw_mfa2_fingerprint_len);
first_tlv = mlxfw_mfa2_tlv_get(mfa2_file, first_tlv_ptr);
if (!first_tlv) {
pr_err("Could not parse package descriptor TLV\n");
goto err_out;
}
multi = mlxfw_mfa2_tlv_multi_get(mfa2_file, first_tlv);
if (!multi) {
pr_err("First TLV is not of valid multi type\n");
goto err_out;
}
multi_child = mlxfw_mfa2_tlv_multi_child(mfa2_file, multi);
if (!multi_child)
goto err_out;
pd = mlxfw_mfa2_tlv_package_descriptor_get(mfa2_file, multi_child);
if (!pd) {
pr_err("Could not parse package descriptor TLV\n");
goto err_out;
}
mfa2_file->first_dev = mlxfw_mfa2_tlv_next(mfa2_file, first_tlv);
if (!mfa2_file->first_dev) {
pr_err("First device TLV is not valid\n");
goto err_out;
}
mfa2_file->dev_count = be16_to_cpu(pd->num_devices);
mfa2_file->first_component = mlxfw_mfa2_tlv_advance(mfa2_file,
mfa2_file->first_dev,
mfa2_file->dev_count);
mfa2_file->component_count = be16_to_cpu(pd->num_components);
mfa2_file->cb = fw->data + NLA_ALIGN(be32_to_cpu(pd->cb_offset));
if (!mlxfw_mfa2_valid_ptr(mfa2_file, mfa2_file->cb)) {
pr_err("Component block is out side the file\n");
goto err_out;
}
mfa2_file->cb_archive_size = be32_to_cpu(pd->cb_archive_size);
cb_top_ptr = mfa2_file->cb + mfa2_file->cb_archive_size - 1;
if (!mlxfw_mfa2_valid_ptr(mfa2_file, cb_top_ptr)) {
pr_err("Component block size is too big\n");
goto err_out;
}
if (!mlxfw_mfa2_file_validate(mfa2_file))
goto err_out;
return mfa2_file;
err_out:
kfree(mfa2_file);
return ERR_PTR(-EINVAL);
}
static const struct mlxfw_mfa2_tlv_multi *
mlxfw_mfa2_tlv_dev_get(const struct mlxfw_mfa2_file *mfa2_file,
const char *psid, u16 psid_size)
{
const struct mlxfw_mfa2_tlv_psid *tlv_psid;
const struct mlxfw_mfa2_tlv_multi *dev_multi;
const struct mlxfw_mfa2_tlv *dev_tlv;
const struct mlxfw_mfa2_tlv *tlv;
u32 idx;
/* for each device tlv */
mlxfw_mfa2_tlv_foreach(mfa2_file, dev_tlv, idx, mfa2_file->first_dev,
mfa2_file->dev_count) {
if (!dev_tlv)
return NULL;
dev_multi = mlxfw_mfa2_tlv_multi_get(mfa2_file, dev_tlv);
if (!dev_multi)
return NULL;
/* find psid child and compare */
tlv = mlxfw_mfa2_tlv_multi_child_find(mfa2_file, dev_multi,
MLXFW_MFA2_TLV_PSID, 0);
if (!tlv)
return NULL;
if (be16_to_cpu(tlv->len) != psid_size)
continue;
tlv_psid = mlxfw_mfa2_tlv_psid_get(mfa2_file, tlv);
if (!tlv_psid)
return NULL;
if (memcmp(psid, tlv_psid->psid, psid_size) == 0)
return dev_multi;
}
return NULL;
}
int mlxfw_mfa2_file_component_count(const struct mlxfw_mfa2_file *mfa2_file,
const char *psid, u32 psid_size,
u32 *p_count)
{
const struct mlxfw_mfa2_tlv_multi *dev_multi;
u16 count;
int err;
dev_multi = mlxfw_mfa2_tlv_dev_get(mfa2_file, psid, psid_size);
if (!dev_multi)
return -EINVAL;
err = mlxfw_mfa2_tlv_multi_child_count(mfa2_file, dev_multi,
MLXFW_MFA2_TLV_COMPONENT_PTR,
&count);
if (err)
return err;
*p_count = count;
return 0;
}
static int mlxfw_mfa2_xz_dec_run(struct xz_dec *xz_dec, struct xz_buf *xz_buf,
bool *finished)
{
enum xz_ret xz_ret;
xz_ret = xz_dec_run(xz_dec, xz_buf);
switch (xz_ret) {
case XZ_STREAM_END:
*finished = true;
return 0;
case XZ_OK:
*finished = false;
return 0;
case XZ_MEM_ERROR:
pr_err("xz no memory\n");
return -ENOMEM;
case XZ_DATA_ERROR:
pr_err("xz file corrupted\n");
return -EINVAL;
case XZ_FORMAT_ERROR:
pr_err("xz format not found\n");
return -EINVAL;
case XZ_OPTIONS_ERROR:
pr_err("unsupported xz option\n");
return -EINVAL;
case XZ_MEMLIMIT_ERROR:
pr_err("xz dictionary too small\n");
return -EINVAL;
default:
pr_err("xz error %d\n", xz_ret);
return -EINVAL;
}
}
static int mlxfw_mfa2_file_cb_offset_xz(const struct mlxfw_mfa2_file *mfa2_file,
off_t off, size_t size, u8 *buf)
{
struct xz_dec *xz_dec;
struct xz_buf dec_buf;
off_t curr_off = 0;
bool finished;
int err;
xz_dec = xz_dec_init(XZ_DYNALLOC, (u32) -1);
if (!xz_dec)
return -EINVAL;
dec_buf.in_size = mfa2_file->cb_archive_size;
dec_buf.in = mfa2_file->cb;
dec_buf.in_pos = 0;
dec_buf.out = buf;
/* decode up to the offset */
do {
dec_buf.out_pos = 0;
dec_buf.out_size = min_t(size_t, size, off - curr_off);
if (dec_buf.out_size == 0)
break;
err = mlxfw_mfa2_xz_dec_run(xz_dec, &dec_buf, &finished);
if (err)
goto out;
if (finished) {
pr_err("xz section too short\n");
err = -EINVAL;
goto out;
}
curr_off += dec_buf.out_pos;
} while (curr_off != off);
/* decode the needed section */
dec_buf.out_pos = 0;
dec_buf.out_size = size;
err = mlxfw_mfa2_xz_dec_run(xz_dec, &dec_buf, &finished);
if (err)
goto out;
out:
xz_dec_end(xz_dec);
return err;
}
static const struct mlxfw_mfa2_tlv_component_descriptor *
mlxfw_mfa2_file_component_tlv_get(const struct mlxfw_mfa2_file *mfa2_file,
u16 comp_index)
{
const struct mlxfw_mfa2_tlv_multi *multi;
const struct mlxfw_mfa2_tlv *multi_child;
const struct mlxfw_mfa2_tlv *comp_tlv;
if (comp_index > mfa2_file->component_count)
return NULL;
comp_tlv = mlxfw_mfa2_tlv_advance(mfa2_file, mfa2_file->first_component,
comp_index);
if (!comp_tlv)
return NULL;
multi = mlxfw_mfa2_tlv_multi_get(mfa2_file, comp_tlv);
if (!multi)
return NULL;
multi_child = mlxfw_mfa2_tlv_multi_child(mfa2_file, multi);
if (!multi_child)
return NULL;
return mlxfw_mfa2_tlv_component_descriptor_get(mfa2_file, multi_child);
}
struct mlxfw_mfa2_comp_data {
struct mlxfw_mfa2_component comp;
u8 buff[0];
};
static const struct mlxfw_mfa2_tlv_component_descriptor *
mlxfw_mfa2_file_component_find(const struct mlxfw_mfa2_file *mfa2_file,
const char *psid, int psid_size,
int component_index)
{
const struct mlxfw_mfa2_tlv_component_ptr *cptr;
const struct mlxfw_mfa2_tlv_multi *dev_multi;
const struct mlxfw_mfa2_tlv *cptr_tlv;
u16 comp_idx;
dev_multi = mlxfw_mfa2_tlv_dev_get(mfa2_file, psid, psid_size);
if (!dev_multi)
return NULL;
cptr_tlv = mlxfw_mfa2_tlv_multi_child_find(mfa2_file, dev_multi,
MLXFW_MFA2_TLV_COMPONENT_PTR,
component_index);
if (!cptr_tlv)
return NULL;
cptr = mlxfw_mfa2_tlv_component_ptr_get(mfa2_file, cptr_tlv);
if (!cptr)
return NULL;
comp_idx = be16_to_cpu(cptr->component_index);
return mlxfw_mfa2_file_component_tlv_get(mfa2_file, comp_idx);
}
struct mlxfw_mfa2_component *
mlxfw_mfa2_file_component_get(const struct mlxfw_mfa2_file *mfa2_file,
const char *psid, int psid_size,
int component_index)
{
const struct mlxfw_mfa2_tlv_component_descriptor *comp;
struct mlxfw_mfa2_comp_data *comp_data;
u32 comp_buf_size;
off_t cb_offset;
u32 comp_size;
int err;
comp = mlxfw_mfa2_file_component_find(mfa2_file, psid, psid_size,
component_index);
if (!comp)
return ERR_PTR(-EINVAL);
cb_offset = (u64) be32_to_cpu(comp->cb_offset_h) << 32 |
be32_to_cpu(comp->cb_offset_l);
comp_size = be32_to_cpu(comp->size);
comp_buf_size = comp_size + mlxfw_mfa2_comp_magic_len;
comp_data = kmalloc(sizeof(*comp_data) + comp_buf_size, GFP_KERNEL);
if (!comp_data)
return ERR_PTR(-ENOMEM);
comp_data->comp.data_size = comp_size;
comp_data->comp.index = be16_to_cpu(comp->identifier);
err = mlxfw_mfa2_file_cb_offset_xz(mfa2_file, cb_offset, comp_buf_size,
comp_data->buff);
if (err) {
pr_err("Component could not be reached in CB\n");
goto err_out;
}
if (memcmp(comp_data->buff, mlxfw_mfa2_comp_magic,
mlxfw_mfa2_comp_magic_len) != 0) {
pr_err("Component has wrong magic\n");
goto err_out;
}
comp_data->comp.data = comp_data->buff + mlxfw_mfa2_comp_magic_len;
return &comp_data->comp;
err_out:
kfree(comp_data);
return ERR_PTR(err);
}
void mlxfw_mfa2_file_component_put(struct mlxfw_mfa2_component *comp)
{
const struct mlxfw_mfa2_comp_data *comp_data;
comp_data = container_of(comp, struct mlxfw_mfa2_comp_data, comp);
kfree(comp_data);
}
void mlxfw_mfa2_file_fini(struct mlxfw_mfa2_file *mfa2_file)
{
kfree(mfa2_file);
}

66
drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2.h Normal file
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/*
* drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2.h
* Copyright (c) 2017 Mellanox Technologies. All rights reserved.
* Copyright (c) 2017 Yotam Gigi <yotamg@mellanox.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _MLXFW_MFA2_H
#define _MLXFW_MFA2_H
#include <linux/firmware.h>
#include "mlxfw.h"
struct mlxfw_mfa2_component {
u16 index;
u32 data_size;
u8 *data;
};
struct mlxfw_mfa2_file;
bool mlxfw_mfa2_check(const struct firmware *fw);
struct mlxfw_mfa2_file *mlxfw_mfa2_file_init(const struct firmware *fw);
int mlxfw_mfa2_file_component_count(const struct mlxfw_mfa2_file *mfa2_file,
const char *psid, u32 psid_size,
u32 *p_count);
struct mlxfw_mfa2_component *
mlxfw_mfa2_file_component_get(const struct mlxfw_mfa2_file *mfa2_file,
const char *psid, int psid_size,
int component_index);
void mlxfw_mfa2_file_component_put(struct mlxfw_mfa2_component *component);
void mlxfw_mfa2_file_fini(struct mlxfw_mfa2_file *mfa2_file);
#endif

60
drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2_file.h Normal file
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@ -0,0 +1,60 @@
/*
* drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2_file.h
* Copyright (c) 2017 Mellanox Technologies. All rights reserved.
* Copyright (c) 2017 Yotam Gigi <yotamg@mellanox.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _MLXFW_MFA2_FILE_H
#define _MLXFW_MFA2_FILE_H
#include <linux/firmware.h>
#include <linux/kernel.h>
struct mlxfw_mfa2_file {
const struct firmware *fw;
const struct mlxfw_mfa2_tlv *first_dev;
u16 dev_count;
const struct mlxfw_mfa2_tlv *first_component;
u16 component_count;
const void *cb; /* components block */
u32 cb_archive_size; /* size of compressed components block */
};
static inline bool mlxfw_mfa2_valid_ptr(const struct mlxfw_mfa2_file *mfa2_file,
const void *ptr)
{
const void *valid_to = mfa2_file->fw->data + mfa2_file->fw->size;
const void *valid_from = mfa2_file->fw->data;
return ptr > valid_from && ptr < valid_to;
}
#endif

103
drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2_format.h Normal file
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@ -0,0 +1,103 @@
/*
* drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2_format.h
* Copyright (c) 2017 Mellanox Technologies. All rights reserved.
* Copyright (c) 2017 Yotam Gigi <yotamg@mellanox.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _MLXFW_MFA2_FORMAT_H
#define _MLXFW_MFA2_FORMAT_H
#include "mlxfw_mfa2_file.h"
#include "mlxfw_mfa2_tlv.h"
enum mlxfw_mfa2_tlv_type {
MLXFW_MFA2_TLV_MULTI_PART = 0x01,
MLXFW_MFA2_TLV_PACKAGE_DESCRIPTOR = 0x02,
MLXFW_MFA2_TLV_COMPONENT_DESCRIPTOR = 0x04,
MLXFW_MFA2_TLV_COMPONENT_PTR = 0x22,
MLXFW_MFA2_TLV_PSID = 0x2A,
};
enum mlxfw_mfa2_compression_type {
MLXFW_MFA2_COMPRESSION_TYPE_NONE,
MLXFW_MFA2_COMPRESSION_TYPE_XZ,
};
struct mlxfw_mfa2_tlv_package_descriptor {
__be16 num_components;
__be16 num_devices;
__be32 cb_offset;
__be32 cb_archive_size;
__be32 cb_size_h;
__be32 cb_size_l;
u8 padding[3];
u8 cv_compression;
__be32 user_data_offset;
} __packed;
MLXFW_MFA2_TLV(package_descriptor, struct mlxfw_mfa2_tlv_package_descriptor,
MLXFW_MFA2_TLV_PACKAGE_DESCRIPTOR);
struct mlxfw_mfa2_tlv_multi {
__be16 num_extensions;
__be16 total_len;
} __packed;
MLXFW_MFA2_TLV(multi, struct mlxfw_mfa2_tlv_multi,
MLXFW_MFA2_TLV_MULTI_PART);
struct mlxfw_mfa2_tlv_psid {
u8 psid[0];
} __packed;
MLXFW_MFA2_TLV_VARSIZE(psid, struct mlxfw_mfa2_tlv_psid,
MLXFW_MFA2_TLV_PSID);
struct mlxfw_mfa2_tlv_component_ptr {
__be16 storage_id;
__be16 component_index;
__be32 storage_address;
} __packed;
MLXFW_MFA2_TLV(component_ptr, struct mlxfw_mfa2_tlv_component_ptr,
MLXFW_MFA2_TLV_COMPONENT_PTR);
struct mlxfw_mfa2_tlv_component_descriptor {
__be16 pldm_classification;
__be16 identifier;
__be32 cb_offset_h;
__be32 cb_offset_l;
__be32 size;
} __packed;
MLXFW_MFA2_TLV(component_descriptor, struct mlxfw_mfa2_tlv_component_descriptor,
MLXFW_MFA2_TLV_COMPONENT_DESCRIPTOR);
#endif

98
drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2_tlv.h Normal file
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@ -0,0 +1,98 @@
/*
* drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2_tlv.h
* Copyright (c) 2017 Mellanox Technologies. All rights reserved.
* Copyright (c) 2017 Yotam Gigi <yotamg@mellanox.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _MLXFW_MFA2_TLV_H
#define _MLXFW_MFA2_TLV_H
#include <linux/kernel.h>
#include "mlxfw_mfa2_file.h"
struct mlxfw_mfa2_tlv {
u8 version;
u8 type;
__be16 len;
u8 data[0];
} __packed;
static inline const struct mlxfw_mfa2_tlv *
mlxfw_mfa2_tlv_get(const struct mlxfw_mfa2_file *mfa2_file, const void *ptr)
{
if (!mlxfw_mfa2_valid_ptr(mfa2_file, ptr) ||
!mlxfw_mfa2_valid_ptr(mfa2_file, ptr + sizeof(struct mlxfw_mfa2_tlv)))
return NULL;
return ptr;
}
static inline const void *
mlxfw_mfa2_tlv_payload_get(const struct mlxfw_mfa2_file *mfa2_file,
const struct mlxfw_mfa2_tlv *tlv, u8 payload_type,
size_t payload_size, bool varsize)
{
void *tlv_top;
tlv_top = (void *) tlv + be16_to_cpu(tlv->len) - 1;
if (!mlxfw_mfa2_valid_ptr(mfa2_file, tlv) ||
!mlxfw_mfa2_valid_ptr(mfa2_file, tlv_top))
return NULL;
if (tlv->type != payload_type)
return NULL;
if (varsize && (be16_to_cpu(tlv->len) < payload_size))
return NULL;
if (!varsize && (be16_to_cpu(tlv->len) != payload_size))
return NULL;
return tlv->data;
}
#define MLXFW_MFA2_TLV(name, payload_type, tlv_type) \
static inline const payload_type * \
mlxfw_mfa2_tlv_ ## name ## _get(const struct mlxfw_mfa2_file *mfa2_file, \
const struct mlxfw_mfa2_tlv *tlv) \
{ \
return mlxfw_mfa2_tlv_payload_get(mfa2_file, tlv, \
tlv_type, sizeof(payload_type), \
false); \
}
#define MLXFW_MFA2_TLV_VARSIZE(name, payload_type, tlv_type) \
static inline const payload_type * \
mlxfw_mfa2_tlv_ ## name ## _get(const struct mlxfw_mfa2_file *mfa2_file, \
const struct mlxfw_mfa2_tlv *tlv) \
{ \
return mlxfw_mfa2_tlv_payload_get(mfa2_file, tlv, \
tlv_type, sizeof(payload_type), \
true); \
}
#endif

126
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/*
* drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2_tlv_multi.c
* Copyright (c) 2017 Mellanox Technologies. All rights reserved.
* Copyright (c) 2017 Yotam Gigi <yotamg@mellanox.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#define pr_fmt(fmt) "MFA2: " fmt
#include "mlxfw_mfa2_tlv_multi.h"
#include <uapi/linux/netlink.h>
#define MLXFW_MFA2_TLV_TOTAL_SIZE(tlv) \
NLA_ALIGN(sizeof(*(tlv)) + be16_to_cpu((tlv)->len))
const struct mlxfw_mfa2_tlv *
mlxfw_mfa2_tlv_multi_child(const struct mlxfw_mfa2_file *mfa2_file,
const struct mlxfw_mfa2_tlv_multi *multi)
{
size_t multi_len;
multi_len = NLA_ALIGN(sizeof(struct mlxfw_mfa2_tlv_multi));
return mlxfw_mfa2_tlv_get(mfa2_file, (void *) multi + multi_len);
}
const struct mlxfw_mfa2_tlv *
mlxfw_mfa2_tlv_next(const struct mlxfw_mfa2_file *mfa2_file,
const struct mlxfw_mfa2_tlv *tlv)
{
const struct mlxfw_mfa2_tlv_multi *multi;
u16 tlv_len;
void *next;
tlv_len = MLXFW_MFA2_TLV_TOTAL_SIZE(tlv);
if (tlv->type == MLXFW_MFA2_TLV_MULTI_PART) {
multi = mlxfw_mfa2_tlv_multi_get(mfa2_file, tlv);
tlv_len = NLA_ALIGN(tlv_len + be16_to_cpu(multi->total_len));
}
next = (void *) tlv + tlv_len;
return mlxfw_mfa2_tlv_get(mfa2_file, next);
}
const struct mlxfw_mfa2_tlv *
mlxfw_mfa2_tlv_advance(const struct mlxfw_mfa2_file *mfa2_file,
const struct mlxfw_mfa2_tlv *from_tlv, u16 count)
{
const struct mlxfw_mfa2_tlv *tlv;
u16 idx;
mlxfw_mfa2_tlv_foreach(mfa2_file, tlv, idx, from_tlv, count)
if (!tlv)
return NULL;
return tlv;
}
const struct mlxfw_mfa2_tlv *
mlxfw_mfa2_tlv_multi_child_find(const struct mlxfw_mfa2_file *mfa2_file,
const struct mlxfw_mfa2_tlv_multi *multi,
enum mlxfw_mfa2_tlv_type type, u16 index)
{
const struct mlxfw_mfa2_tlv *tlv;
u16 skip = 0;
u16 idx;
mlxfw_mfa2_tlv_multi_foreach(mfa2_file, tlv, idx, multi) {
if (!tlv) {
pr_err("TLV parsing error\n");
return NULL;
}
if (tlv->type == type)
if (skip++ == index)
return tlv;
}
return NULL;
}
int mlxfw_mfa2_tlv_multi_child_count(const struct mlxfw_mfa2_file *mfa2_file,
const struct mlxfw_mfa2_tlv_multi *multi,
enum mlxfw_mfa2_tlv_type type,
u16 *p_count)
{
const struct mlxfw_mfa2_tlv *tlv;
u16 count = 0;
u16 idx;
mlxfw_mfa2_tlv_multi_foreach(mfa2_file, tlv, idx, multi) {
if (!tlv) {
pr_err("TLV parsing error\n");
return -EINVAL;
}
if (tlv->type == type)
count++;
}
*p_count = count;
return 0;
}

71
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/*
* drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2_tlv_multi.h
* Copyright (c) 2017 Mellanox Technologies. All rights reserved.
* Copyright (c) 2017 Yotam Gigi <yotamg@mellanox.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _MLXFW_MFA2_TLV_MULTI_H
#define _MLXFW_MFA2_TLV_MULTI_H
#include "mlxfw_mfa2_tlv.h"
#include "mlxfw_mfa2_format.h"
#include "mlxfw_mfa2_file.h"
const struct mlxfw_mfa2_tlv *
mlxfw_mfa2_tlv_multi_child(const struct mlxfw_mfa2_file *mfa2_file,
const struct mlxfw_mfa2_tlv_multi *multi);
const struct mlxfw_mfa2_tlv *
mlxfw_mfa2_tlv_next(const struct mlxfw_mfa2_file *mfa2_file,
const struct mlxfw_mfa2_tlv *tlv);
const struct mlxfw_mfa2_tlv *
mlxfw_mfa2_tlv_advance(const struct mlxfw_mfa2_file *mfa2_file,
const struct mlxfw_mfa2_tlv *from_tlv, u16 count);
const struct mlxfw_mfa2_tlv *
mlxfw_mfa2_tlv_multi_child_find(const struct mlxfw_mfa2_file *mfa2_file,
const struct mlxfw_mfa2_tlv_multi *multi,
enum mlxfw_mfa2_tlv_type type, u16 index);
int mlxfw_mfa2_tlv_multi_child_count(const struct mlxfw_mfa2_file *mfa2_file,
const struct mlxfw_mfa2_tlv_multi *multi,
enum mlxfw_mfa2_tlv_type type,
u16 *p_count);
#define mlxfw_mfa2_tlv_foreach(mfa2_file, tlv, idx, from_tlv, count) \
for (idx = 0, tlv = from_tlv; idx < (count); \
idx++, tlv = mlxfw_mfa2_tlv_next(mfa2_file, tlv))
#define mlxfw_mfa2_tlv_multi_foreach(mfa2_file, tlv, idx, multi) \
mlxfw_mfa2_tlv_foreach(mfa2_file, tlv, idx, \
mlxfw_mfa2_tlv_multi_child(mfa2_file, multi), \
be16_to_cpu(multi->num_extensions) + 1)
#endif