diff options
Diffstat (limited to 'drivers/edgetpu/edgetpu-firmware.h')
| -rw-r--r-- | drivers/edgetpu/edgetpu-firmware.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/edgetpu/edgetpu-firmware.h b/drivers/edgetpu/edgetpu-firmware.h index 0d3e1d4..f24135b 100644 --- a/drivers/edgetpu/edgetpu-firmware.h +++ b/drivers/edgetpu/edgetpu-firmware.h @@ -94,6 +94,26 @@ struct edgetpu_firmware_buffer { const char *name; /* the name of this firmware */ }; +/* + * Descriptor for loaded firmware, either in shared buffer mode or carveout mode + * (non-shared, custom allocated memory). + */ +struct edgetpu_firmware_desc { + /* + * Mode independent buffer information. This is either passed into or + * updated by handlers. + */ + struct edgetpu_firmware_buffer buf; + /* + * Shared firmware buffer when we're using shared buffer mode. This + * pointer to keep and release the reference count on unloading this + * shared firmware buffer. + * + * This is NULL when firmware is loaded in carveout mode. + */ + struct edgetpu_shared_fw_buffer *shared_buf; +}; + struct edgetpu_firmware_chip_data { /* Name of default firmware image for this chip. */ const char *default_firmware_name; @@ -162,6 +182,19 @@ struct edgetpu_firmware_chip_data { }; /* + * Chip-dependent (actually chip family dependent, mobile vs. MCP) calls + * for loading/unloading firmware images. These handle chip-specified carveout + * buffers vs. shared firmware handling for multi-chip platforms. Used by the + * common firmware layer. + */ +int edgetpu_firmware_chip_load_locked( + struct edgetpu_firmware *et_fw, + struct edgetpu_firmware_desc *fw_desc, const char *name); +void edgetpu_firmware_chip_unload_locked( + struct edgetpu_firmware *et_fw, + struct edgetpu_firmware_desc *fw_desc); + +/* * Returns the chip-specific IOVA where the firmware is mapped. * * Debug purpose only. @@ -252,4 +285,20 @@ uint32_t edgetpu_firmware_get_cl(struct edgetpu_firmware *et_fw); /* Returns the build time of the image in seconds since 1970. */ uint64_t edgetpu_firmware_get_build_time(struct edgetpu_firmware *et_fw); +/* + * Kernel verify firmware signature (if EDGETPU_FEATURE_FW_SIG enabled). + * + * @etdev: the edgetpu_dev for which the initial load of a (probably + * shared) firmware image is requested + * @name: name of the image being validated (request_firmware path) + * @image_data: passes in the pointer to the raw image with signature, returns + * pointer to the firmware code image. + * @image_size: passes in the size of the raw image with signature, returns + * size of the firmware code image. + */ +bool edgetpu_firmware_verify_signature(struct edgetpu_dev *etdev, + const char *name, + void **image_data, size_t *image_size); + + #endif /* __EDGETPU_FIRMWARE_H__ */ |