drivers/thunderbolt/nvm.c

38 	int (*read_version)(struct tb_nvm *nvm);
39 	int (*validate)(struct tb_nvm *nvm);
40 	int (*write_headers)(struct tb_nvm *nvm);
56 static int intel_switch_nvm_version(struct tb_nvm *nvm)
58 	struct tb_switch *sw = tb_to_switch(nvm->dev);
82 	nvm->major = (val >> 16) & 0xff;
83 	nvm->minor = (val >> 8) & 0xff;
84 	nvm->active_size = nvm_size;
89 static int intel_switch_nvm_validate(struct tb_nvm *nvm)
91 	struct tb_switch *sw = tb_to_switch(nvm->dev);
94 	u8 *buf = nvm->buf;
96 	image_size = nvm->buf_data_size;
130 	nvm->buf_data_start = buf + hdr_size;
131 	nvm->buf_data_size = image_size - hdr_size;
136 static int intel_switch_nvm_write_headers(struct tb_nvm *nvm)
138 	struct tb_switch *sw = tb_to_switch(nvm->dev);
145 			DMA_PORT_CSS_ADDRESS, nvm->buf + INTEL_NVM_CSS,
160 static int asmedia_switch_nvm_version(struct tb_nvm *nvm)
162 	struct tb_switch *sw = tb_to_switch(nvm->dev);
170 	nvm->major = (val << 16) & 0xff0000;
171 	nvm->major |= val & 0x00ff00;
172 	nvm->major |= (val >> 16) & 0x0000ff;
178 	nvm->minor = (val << 16) & 0xff0000;
179 	nvm->minor |= val & 0x00ff00;
180 	nvm->minor |= (val >> 16) & 0x0000ff;
183 	nvm->active_size = SZ_512K;
199 static int intel_retimer_nvm_version(struct tb_nvm *nvm)
201 	struct tb_retimer *rt = tb_to_retimer(nvm->dev);
209 	nvm->major = (val >> 16) & 0xff;
210 	nvm->minor = (val >> 8) & 0xff;
218 	nvm->active_size = nvm_size;
223 static int intel_retimer_nvm_validate(struct tb_nvm *nvm)
225 	struct tb_retimer *rt = tb_to_retimer(nvm->dev);
227 	u8 *buf = nvm->buf;
230 	image_size = nvm->buf_data_size;
261 	nvm->buf_data_start = buf + hdr_size;
262 	nvm->buf_data_size = image_size - hdr_size;
288 	struct tb_nvm *nvm;
329 	nvm = kzalloc(sizeof(*nvm), GFP_KERNEL);
330 	if (!nvm)
335 		kfree(nvm);
339 	nvm->id = ret;
340 	nvm->dev = dev;
341 	nvm->vops = vops;
343 	return nvm;
348  * @nvm: NVM structure
354 int tb_nvm_read_version(struct tb_nvm *nvm)
356 	const struct tb_nvm_vendor_ops *vops = nvm->vops;
359 		return vops->read_version(nvm);
366  * @nvm: NVM structure
369  * checks pass returns %0. As side effect updates @nvm->buf_data_start
370  * and @nvm->buf_data_size fields to match the actual data to be written
375 int tb_nvm_validate(struct tb_nvm *nvm)
377 	const struct tb_nvm_vendor_ops *vops = nvm->vops;
379 	u8 *buf = nvm->buf;
387 	image_size = nvm->buf_data_size;
395 	nvm->buf_data_start = buf;
397 	return vops->validate ? vops->validate(nvm) : 0;
402  * @nvm: NVM structure
410 int tb_nvm_write_headers(struct tb_nvm *nvm)
412 	const struct tb_nvm_vendor_ops *vops = nvm->vops;
414 	return vops->write_headers ? vops->write_headers(nvm) : 0;
419  * @nvm: NVM structure
423  * Registers new active NVmem device for @nvm. The @reg_read is called
425  * needed. The first parameter passed to @reg_read is @nvm structure.
428 int tb_nvm_add_active(struct tb_nvm *nvm, nvmem_reg_read_t reg_read)
438 	config.id = nvm->id;
441 	config.size = nvm->active_size;
442 	config.dev = nvm->dev;
444 	config.priv = nvm;
450 	nvm->active = nvmem;
455  * tb_nvm_write_buf() - Write data to @nvm buffer
456  * @nvm: NVM structure
462  * written to the flash. Copies @bytes from @val to @nvm->buf starting
465 int tb_nvm_write_buf(struct tb_nvm *nvm, unsigned int offset, void *val,
468 	if (!nvm->buf) {
469 		nvm->buf = vmalloc(NVM_MAX_SIZE);
470 		if (!nvm->buf)
474 	nvm->flushed = false;
475 	nvm->buf_data_size = offset + bytes;
476 	memcpy(nvm->buf + offset, val, bytes);
482  * @nvm: NVM structure
486  * Registers new non-active NVmem device for @nvm. The @reg_write is called
488  * needed. The first parameter passed to @reg_write is @nvm structure.
493 int tb_nvm_add_non_active(struct tb_nvm *nvm, nvmem_reg_write_t reg_write)
503 	config.id = nvm->id;
507 	config.dev = nvm->dev;
509 	config.priv = nvm;
515 	nvm->non_active = nvmem;
521  * @nvm: NVM structure to release
525 void tb_nvm_free(struct tb_nvm *nvm)
527 	if (nvm) {
528 		nvmem_unregister(nvm->non_active);
529 		nvmem_unregister(nvm->active);
530 		vfree(nvm->buf);
531 		ida_free(&nvm_ida, nvm->id);
533 	kfree(nvm);