diff options
Diffstat (limited to 'sys/compat/linuxkpi/common/src/linux_firmware.c')
| -rw-r--r-- | sys/compat/linuxkpi/common/src/linux_firmware.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/sys/compat/linuxkpi/common/src/linux_firmware.c b/sys/compat/linuxkpi/common/src/linux_firmware.c index 47cccd42da20..17da91381280 100644 --- a/sys/compat/linuxkpi/common/src/linux_firmware.c +++ b/sys/compat/linuxkpi/common/src/linux_firmware.c @@ -2,6 +2,7 @@ * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2020-2021 The FreeBSD Foundation + * Copyright (c) 2022 Bjoern A. Zeeb * * This software was developed by Björn Zeeb under sponsorship from * the FreeBSD Foundation. @@ -26,8 +27,6 @@ * 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. - * - * $FreeBSD$ */ #include <sys/param.h> @@ -223,3 +222,26 @@ linuxkpi_release_firmware(const struct linuxkpi_firmware *fw) firmware_put(fw->fbdfw, FIRMWARE_UNLOAD); free(__DECONST(void *, fw), M_LKPI_FW); } + +int +linuxkpi_request_partial_firmware_into_buf(const struct linuxkpi_firmware **fw, + const char *fw_name, struct device *dev, uint8_t *buf, size_t buflen, + size_t offset) +{ + const struct linuxkpi_firmware *lfw; + int error; + + error = linuxkpi_request_firmware(fw, fw_name, dev); + if (error != 0) + return (error); + + lfw = *fw; + if ((offset + buflen) >= lfw->size) { + linuxkpi_release_firmware(lfw); + return (-ERANGE); + } + + memcpy(buf, lfw->data + offset, buflen); + + return (0); +} |