blob: e6f677e42007751d1f51f9749c1cf48177bb65ab [file] [log] [blame]
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/* Copyright (c) 2017-2019 Mellanox Technologies. All rights reserved */
#define pr_fmt(fmt) "mlxfw_mfa2: " fmt
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/netlink.h>
#include <linux/vmalloc.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 = kzalloc(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);
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[];
};
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 = vzalloc(sizeof(*comp_data) + comp_buf_size);
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");
err = -EINVAL;
goto err_out;
}
comp_data->comp.data = comp_data->buff + mlxfw_mfa2_comp_magic_len;
return &comp_data->comp;
err_out:
vfree(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);
vfree(comp_data);
}
void mlxfw_mfa2_file_fini(struct mlxfw_mfa2_file *mfa2_file)
{
kfree(mfa2_file);
}