1 // SPDX-License-Identifier: GPL-2.0
116 	return container_of(file->private_data, struct pfru_device, miscdev);  in to_pfru_dev()
122 	acpi_handle handle = ACPI_HANDLE(pfru_dev->parent_dev);  in query_capability()
124 	int ret = -EINVAL;  in query_capability()
127 					  pfru_dev->rev_id,  in query_capability()
131 		dev_dbg(pfru_dev->parent_dev,  in query_capability()
132 			"Query cap failed with no object\n");  in query_capability()
136 	if (out_obj->package.count < CAP_NR_IDX ||  in query_capability()
137 	    out_obj->package.elements[CAP_STATUS_IDX].type != ACPI_TYPE_INTEGER ||  in query_capability()
138 	    out_obj->package.elements[CAP_UPDATE_IDX].type != ACPI_TYPE_INTEGER ||  in query_capability()
139 	    out_obj->package.elements[CAP_CODE_TYPE_IDX].type != ACPI_TYPE_BUFFER ||  in query_capability()
140 	    out_obj->package.elements[CAP_FW_VER_IDX].type != ACPI_TYPE_INTEGER ||  in query_capability()
141 	    out_obj->package.elements[CAP_CODE_RT_VER_IDX].type != ACPI_TYPE_INTEGER ||  in query_capability()
142 	    out_obj->package.elements[CAP_DRV_TYPE_IDX].type != ACPI_TYPE_BUFFER ||  in query_capability()
143 	    out_obj->package.elements[CAP_DRV_RT_VER_IDX].type != ACPI_TYPE_INTEGER ||  in query_capability()
144 	    out_obj->package.elements[CAP_DRV_SVN_IDX].type != ACPI_TYPE_INTEGER ||  in query_capability()
145 	    out_obj->package.elements[CAP_PLAT_ID_IDX].type != ACPI_TYPE_BUFFER ||  in query_capability()
146 	    out_obj->package.elements[CAP_OEM_ID_IDX].type != ACPI_TYPE_BUFFER ||  in query_capability()
147 	    out_obj->package.elements[CAP_OEM_INFO_IDX].type != ACPI_TYPE_BUFFER) {  in query_capability()
148 		dev_dbg(pfru_dev->parent_dev,  in query_capability()
149 			"Query cap failed with invalid package count/type\n");  in query_capability()
153 	cap_hdr->status = out_obj->package.elements[CAP_STATUS_IDX].integer.value;  in query_capability()
154 	if (cap_hdr->status != DSM_SUCCEED) {  in query_capability()
155 		ret = -EBUSY;  in query_capability()
156 		dev_dbg(pfru_dev->parent_dev, "Query cap Error Status:%d\n",  in query_capability()
157 			cap_hdr->status);  in query_capability()
161 	cap_hdr->update_cap = out_obj->package.elements[CAP_UPDATE_IDX].integer.value;  in query_capability()
162 	memcpy(&cap_hdr->code_type,  in query_capability()
163 	       out_obj->package.elements[CAP_CODE_TYPE_IDX].buffer.pointer,  in query_capability()
164 	       out_obj->package.elements[CAP_CODE_TYPE_IDX].buffer.length);  in query_capability()
165 	cap_hdr->fw_version =  in query_capability()
166 		out_obj->package.elements[CAP_FW_VER_IDX].integer.value;  in query_capability()
167 	cap_hdr->code_rt_version =  in query_capability()
168 		out_obj->package.elements[CAP_CODE_RT_VER_IDX].integer.value;  in query_capability()
169 	memcpy(&cap_hdr->drv_type,  in query_capability()
170 	       out_obj->package.elements[CAP_DRV_TYPE_IDX].buffer.pointer,  in query_capability()
171 	       out_obj->package.elements[CAP_DRV_TYPE_IDX].buffer.length);  in query_capability()
172 	cap_hdr->drv_rt_version =  in query_capability()
173 		out_obj->package.elements[CAP_DRV_RT_VER_IDX].integer.value;  in query_capability()
174 	cap_hdr->drv_svn =  in query_capability()
175 		out_obj->package.elements[CAP_DRV_SVN_IDX].integer.value;  in query_capability()
176 	memcpy(&cap_hdr->platform_id,  in query_capability()
177 	       out_obj->package.elements[CAP_PLAT_ID_IDX].buffer.pointer,  in query_capability()
178 	       out_obj->package.elements[CAP_PLAT_ID_IDX].buffer.length);  in query_capability()
179 	memcpy(&cap_hdr->oem_id,  in query_capability()
180 	       out_obj->package.elements[CAP_OEM_ID_IDX].buffer.pointer,  in query_capability()
181 	       out_obj->package.elements[CAP_OEM_ID_IDX].buffer.length);  in query_capability()
182 	cap_hdr->oem_info_len =  in query_capability()
183 		out_obj->package.elements[CAP_OEM_INFO_IDX].buffer.length;  in query_capability()
196 	acpi_handle handle = ACPI_HANDLE(pfru_dev->parent_dev);  in query_buffer()
198 	int ret = -EINVAL;  in query_buffer()
201 					  pfru_dev->rev_id, PFRU_FUNC_QUERY_BUF,  in query_buffer()
204 		dev_dbg(pfru_dev->parent_dev,  in query_buffer()
205 			"Query buf failed with no object\n");  in query_buffer()
209 	if (out_obj->package.count < BUF_NR_IDX ||  in query_buffer()
210 	    out_obj->package.elements[BUF_STATUS_IDX].type != ACPI_TYPE_INTEGER ||  in query_buffer()
211 	    out_obj->package.elements[BUF_EXT_STATUS_IDX].type != ACPI_TYPE_INTEGER ||  in query_buffer()
212 	    out_obj->package.elements[BUF_ADDR_LOW_IDX].type != ACPI_TYPE_INTEGER ||  in query_buffer()
213 	    out_obj->package.elements[BUF_ADDR_HI_IDX].type != ACPI_TYPE_INTEGER ||  in query_buffer()
214 	    out_obj->package.elements[BUF_SIZE_IDX].type != ACPI_TYPE_INTEGER) {  in query_buffer()
215 		dev_dbg(pfru_dev->parent_dev,  in query_buffer()
216 			"Query buf failed with invalid package count/type\n");  in query_buffer()
220 	info->status = out_obj->package.elements[BUF_STATUS_IDX].integer.value;  in query_buffer()
221 	info->ext_status =  in query_buffer()
222 		out_obj->package.elements[BUF_EXT_STATUS_IDX].integer.value;  in query_buffer()
223 	if (info->status != DSM_SUCCEED) {  in query_buffer()
224 		ret = -EBUSY;  in query_buffer()
225 		dev_dbg(pfru_dev->parent_dev,  in query_buffer()
226 			"Query buf failed with Error Status:%d\n", info->status);  in query_buffer()
227 		dev_dbg(pfru_dev->parent_dev,  in query_buffer()
228 			"Query buf failed with Error Extended Status:%d\n", info->ext_status);  in query_buffer()
233 	info->addr_lo =  in query_buffer()
234 		out_obj->package.elements[BUF_ADDR_LOW_IDX].integer.value;  in query_buffer()
235 	info->addr_hi =  in query_buffer()
236 		out_obj->package.elements[BUF_ADDR_HI_IDX].integer.value;  in query_buffer()
237 	info->buf_size = out_obj->package.elements[BUF_SIZE_IDX].integer.value;  in query_buffer()
250 	const efi_guid_t *image_type_id = &img_hdr->image_type_id;  in get_image_type()
259 	return -EINVAL;  in get_image_type()
273 	switch (img_hdr->ver) {  in adjust_efi_size()
275 		return size - 2 * sizeof(u64);  in adjust_efi_size()
278 		return size - sizeof(u64);  in adjust_efi_size()
282 		return -EINVAL;  in adjust_efi_size()
302 	size = cap_hdr->headersize;  in applicable_image()
309 		(m_hdr->emb_drv_cnt + m_hdr->payload_cnt) * sizeof(u64);  in applicable_image()
314 		dev_dbg(pfru_dev->parent_dev, "Invalid image type\n");  in applicable_image()
320 		dev_dbg(pfru_dev->parent_dev, "Invalid image size\n");  in applicable_image()
325 	size += sizeof(u64) + auth->auth_info.hdr.len;  in applicable_image()
330 		return payload_hdr->rt_ver >= cap->code_rt_version;  in applicable_image()
332 	return payload_hdr->svn_ver >= cap->drv_svn;  in applicable_image()
338 	dev_dbg(pfru_dev->parent_dev, "Update result:\n");  in print_update_debug_info()
339 	dev_dbg(pfru_dev->parent_dev, "Authentication Time Low:%lld\n",  in print_update_debug_info()
340 		result->low_auth_time);  in print_update_debug_info()
341 	dev_dbg(pfru_dev->parent_dev, "Authentication Time High:%lld\n",  in print_update_debug_info()
342 		result->high_auth_time);  in print_update_debug_info()
343 	dev_dbg(pfru_dev->parent_dev, "Execution Time Low:%lld\n",  in print_update_debug_info()
344 		result->low_exec_time);  in print_update_debug_info()
345 	dev_dbg(pfru_dev->parent_dev, "Execution Time High:%lld\n",  in print_update_debug_info()
346 		result->high_exec_time);  in print_update_debug_info()
354 	int ret = -EINVAL;  in start_update()
362 	in_buf.integer.value = action;  in start_update()
364 	handle = ACPI_HANDLE(pfru_dev->parent_dev);  in start_update()
366 					  pfru_dev->rev_id, PFRU_FUNC_START,  in start_update()
369 		dev_dbg(pfru_dev->parent_dev,  in start_update()
370 			"Update failed to start with no object\n");  in start_update()
374 	if (out_obj->package.count < UPDATE_NR_IDX ||  in start_update()
375 	    out_obj->package.elements[UPDATE_STATUS_IDX].type != ACPI_TYPE_INTEGER ||  in start_update()
376 	    out_obj->package.elements[UPDATE_EXT_STATUS_IDX].type != ACPI_TYPE_INTEGER ||  in start_update()
377 	    out_obj->package.elements[UPDATE_AUTH_TIME_LOW_IDX].type != ACPI_TYPE_INTEGER ||  in start_update()
378 	    out_obj->package.elements[UPDATE_AUTH_TIME_HI_IDX].type != ACPI_TYPE_INTEGER ||  in start_update()
379 	    out_obj->package.elements[UPDATE_EXEC_TIME_LOW_IDX].type != ACPI_TYPE_INTEGER ||  in start_update()
380 	    out_obj->package.elements[UPDATE_EXEC_TIME_HI_IDX].type != ACPI_TYPE_INTEGER) {  in start_update()
381 		dev_dbg(pfru_dev->parent_dev,  in start_update()
382 			"Update failed with invalid package count/type\n");  in start_update()
387 		out_obj->package.elements[UPDATE_STATUS_IDX].integer.value;  in start_update()
389 		out_obj->package.elements[UPDATE_EXT_STATUS_IDX].integer.value;  in start_update()
392 		ret = -EBUSY;  in start_update()
393 		dev_dbg(pfru_dev->parent_dev,  in start_update()
394 			"Update failed with Error Status:%d\n", update_result.status);  in start_update()
395 		dev_dbg(pfru_dev->parent_dev,  in start_update()
396 			"Update failed with Error Extended Status:%d\n",  in start_update()
403 		out_obj->package.elements[UPDATE_AUTH_TIME_LOW_IDX].integer.value;  in start_update()
405 		out_obj->package.elements[UPDATE_AUTH_TIME_HI_IDX].integer.value;  in start_update()
407 		out_obj->package.elements[UPDATE_EXEC_TIME_LOW_IDX].integer.value;  in start_update()
409 		out_obj->package.elements[UPDATE_EXEC_TIME_HI_IDX].integer.value;  in start_update()
435 			return -EFAULT;  in pfru_ioctl()
441 			return -EFAULT;  in pfru_ioctl()
444 			return -EINVAL;  in pfru_ioctl()
446 		pfru_dev->rev_id = rev;  in pfru_ioctl()
460 		return -ENOTTY;  in pfru_ioctl()
481 		dev_dbg(pfru_dev->parent_dev, "Capsule image size too large\n");  in pfru_write()
482 		return -EINVAL;  in pfru_write()
493 		dev_dbg(pfru_dev->parent_dev, "Failed to remap the buffer\n");  in pfru_write()
494 		return -ENOMEM;  in pfru_write()
498 		dev_dbg(pfru_dev->parent_dev,  in pfru_write()
499 			"Failed to copy the data from the user space buffer\n");  in pfru_write()
500 		ret = -EINVAL;  in pfru_write()
510 		ret = -EINVAL;  in pfru_write()
529 	misc_deregister(&pfru_dev->miscdev);  in acpi_pfru_remove()
536 	ida_free(&pfru_ida, pfru_dev->index);  in pfru_put_idx()
541 	acpi_handle handle = ACPI_HANDLE(&pdev->dev);  in acpi_pfru_probe()
546 		dev_dbg(&pdev->dev, "Missing _DSM\n");  in acpi_pfru_probe()
547 		return -ENODEV;  in acpi_pfru_probe()
550 	pfru_dev = devm_kzalloc(&pdev->dev, sizeof(*pfru_dev), GFP_KERNEL);  in acpi_pfru_probe()
552 		return -ENOMEM;  in acpi_pfru_probe()
558 	pfru_dev->index = ret;  in acpi_pfru_probe()
559 	ret = devm_add_action_or_reset(&pdev->dev, pfru_put_idx, pfru_dev);  in acpi_pfru_probe()
563 	pfru_dev->rev_id = PFRU_DEFAULT_REV_ID;  in acpi_pfru_probe()
564 	pfru_dev->parent_dev = &pdev->dev;  in acpi_pfru_probe()
566 	pfru_dev->miscdev.minor = MISC_DYNAMIC_MINOR;  in acpi_pfru_probe()
567 	pfru_dev->miscdev.name = devm_kasprintf(&pdev->dev, GFP_KERNEL,  in acpi_pfru_probe()
568 						"pfru%d", pfru_dev->index);  in acpi_pfru_probe()
569 	if (!pfru_dev->miscdev.name)  in acpi_pfru_probe()
570 		return -ENOMEM;  in acpi_pfru_probe()
572 	pfru_dev->miscdev.nodename = devm_kasprintf(&pdev->dev, GFP_KERNEL,  in acpi_pfru_probe()
573 						    "acpi_pfr_update%d", pfru_dev->index);  in acpi_pfru_probe()
574 	if (!pfru_dev->miscdev.nodename)  in acpi_pfru_probe()
575 		return -ENOMEM;  in acpi_pfru_probe()
577 	pfru_dev->miscdev.fops = &acpi_pfru_fops;  in acpi_pfru_probe()
578 	pfru_dev->miscdev.parent = &pdev->dev;  in acpi_pfru_probe()
580 	ret = misc_register(&pfru_dev->miscdev);  in acpi_pfru_probe()