116 static bool qcom_ice_check_supported(struct qcom_ice *ice)  in qcom_ice_check_supported()  argument
118 	u32 regval = qcom_ice_readl(ice, QCOM_ICE_REG_VERSION);  in qcom_ice_check_supported()
119 	struct device *dev = ice->dev;  in qcom_ice_check_supported()
136 		ice->hwkm_version = QCOM_ICE_HWKM_V2;  in qcom_ice_check_supported()
138 		ice->hwkm_version = QCOM_ICE_HWKM_V1;  in qcom_ice_check_supported()
140 		ice->hwkm_version = 0;  in qcom_ice_check_supported()
145 	if (ice->hwkm_version)  in qcom_ice_check_supported()
147 			 ice->hwkm_version);  in qcom_ice_check_supported()
150 	regval = qcom_ice_readl(ice, QCOM_ICE_REG_FUSE_SETTING);  in qcom_ice_check_supported()
174 	if (ice->hwkm_version && qcom_scm_has_wrapped_key_support()) {  in qcom_ice_check_supported()
177 			ice->use_hwkm = true;  in qcom_ice_check_supported()
189 static void qcom_ice_low_power_mode_enable(struct qcom_ice *ice)  in qcom_ice_low_power_mode_enable()  argument
193 	regval = qcom_ice_readl(ice, QCOM_ICE_REG_ADVANCED_CONTROL);  in qcom_ice_low_power_mode_enable()
197 	qcom_ice_writel(ice, regval, QCOM_ICE_REG_ADVANCED_CONTROL);  in qcom_ice_low_power_mode_enable()
200 static void qcom_ice_optimization_enable(struct qcom_ice *ice)  in qcom_ice_optimization_enable()  argument
205 	regval = qcom_ice_readl(ice, QCOM_ICE_REG_ADVANCED_CONTROL);  in qcom_ice_optimization_enable()
209 	qcom_ice_writel(ice, regval, QCOM_ICE_REG_ADVANCED_CONTROL);  in qcom_ice_optimization_enable()
225 static int qcom_ice_wait_bist_status(struct qcom_ice *ice)  in qcom_ice_wait_bist_status()  argument
230 	err = readl_poll_timeout(ice->base + QCOM_ICE_REG_BIST_STATUS,  in qcom_ice_wait_bist_status()
234 		dev_err(ice->dev, "Timed out waiting for ICE self-test to complete\n");  in qcom_ice_wait_bist_status()
238 	if (ice->use_hwkm &&  in qcom_ice_wait_bist_status()
239 	    qcom_ice_readl(ice, QCOM_ICE_REG_HWKM_TZ_KM_STATUS) !=  in qcom_ice_wait_bist_status()
243 	     QCOM_ICE_HWKM_CRYPTO_BIST_DONE(ice->hwkm_version) |  in qcom_ice_wait_bist_status()
244 	     QCOM_ICE_HWKM_BIST_DONE(ice->hwkm_version))) {  in qcom_ice_wait_bist_status()
245 		dev_err(ice->dev, "HWKM self-test error!\n");  in qcom_ice_wait_bist_status()
254 static void qcom_ice_hwkm_init(struct qcom_ice *ice)  in qcom_ice_hwkm_init()  argument
258 	if (!ice->use_hwkm)  in qcom_ice_hwkm_init()
269 	if (ice->hwkm_version == QCOM_ICE_HWKM_V2) {  in qcom_ice_hwkm_init()
270 		regval = qcom_ice_readl(ice, QCOM_ICE_REG_CONTROL);  in qcom_ice_hwkm_init()
272 		qcom_ice_writel(ice, regval, QCOM_ICE_REG_CONTROL);  in qcom_ice_hwkm_init()
273 	} else if (ice->hwkm_version == QCOM_ICE_HWKM_V1) {  in qcom_ice_hwkm_init()
274 		regval = qcom_ice_readl(ice, QCOM_ICE_REG_HWKM_TZ_KM_CTL);  in qcom_ice_hwkm_init()
276 		qcom_ice_writel(ice, regval, QCOM_ICE_REG_HWKM_TZ_KM_CTL);  in qcom_ice_hwkm_init()
280 	qcom_ice_writel(ice, QCOM_ICE_HWKM_DISABLE_CRC_CHECKS_VAL,  in qcom_ice_hwkm_init()
287 	qcom_ice_writel(ice, GENMASK(31, 0), QCOM_ICE_REG_HWKM_BANK0_BBAC_0);  in qcom_ice_hwkm_init()
288 	qcom_ice_writel(ice, GENMASK(31, 0), QCOM_ICE_REG_HWKM_BANK0_BBAC_1);  in qcom_ice_hwkm_init()
289 	qcom_ice_writel(ice, GENMASK(31, 0), QCOM_ICE_REG_HWKM_BANK0_BBAC_2);  in qcom_ice_hwkm_init()
290 	qcom_ice_writel(ice, GENMASK(31, 0), QCOM_ICE_REG_HWKM_BANK0_BBAC_3);  in qcom_ice_hwkm_init()
291 	qcom_ice_writel(ice, GENMASK(31, 0), QCOM_ICE_REG_HWKM_BANK0_BBAC_4);  in qcom_ice_hwkm_init()
294 	qcom_ice_writel(ice, QCOM_ICE_HWKM_RSP_FIFO_CLEAR_VAL,  in qcom_ice_hwkm_init()
296 	ice->hwkm_init_complete = true;  in qcom_ice_hwkm_init()
299 int qcom_ice_enable(struct qcom_ice *ice)  in qcom_ice_enable()  argument
301 	qcom_ice_low_power_mode_enable(ice);  in qcom_ice_enable()
302 	qcom_ice_optimization_enable(ice);  in qcom_ice_enable()
303 	qcom_ice_hwkm_init(ice);  in qcom_ice_enable()
304 	return qcom_ice_wait_bist_status(ice);  in qcom_ice_enable()
308 int qcom_ice_resume(struct qcom_ice *ice)  in qcom_ice_resume()  argument
310 	struct device *dev = ice->dev;  in qcom_ice_resume()
313 	err = clk_prepare_enable(ice->core_clk);  in qcom_ice_resume()
319 	qcom_ice_hwkm_init(ice);  in qcom_ice_resume()
320 	return qcom_ice_wait_bist_status(ice);  in qcom_ice_resume()
324 int qcom_ice_suspend(struct qcom_ice *ice)  in qcom_ice_suspend()  argument
326 	clk_disable_unprepare(ice->core_clk);  in qcom_ice_suspend()
327 	ice->hwkm_init_complete = false;  in qcom_ice_suspend()
333 static unsigned int translate_hwkm_slot(struct qcom_ice *ice, unsigned int slot)  in translate_hwkm_slot()  argument
335 	return ice->hwkm_version == QCOM_ICE_HWKM_V1 ? slot : slot * 2;  in translate_hwkm_slot()
338 static int qcom_ice_program_wrapped_key(struct qcom_ice *ice, unsigned int slot,  in qcom_ice_program_wrapped_key()  argument
341 	struct device *dev = ice->dev;  in qcom_ice_program_wrapped_key()
349 	if (!ice->use_hwkm) {  in qcom_ice_program_wrapped_key()
353 	if (!ice->hwkm_init_complete) {  in qcom_ice_program_wrapped_key()
359 	qcom_ice_writel(ice, 0x0, QCOM_ICE_REG_CRYPTOCFG(slot));  in qcom_ice_program_wrapped_key()
362 	err = qcom_scm_ice_set_key(translate_hwkm_slot(ice, slot), bkey->bytes,  in qcom_ice_program_wrapped_key()
372 	qcom_ice_writel(ice, le32_to_cpu(cfg.regval),  in qcom_ice_program_wrapped_key()
377 int qcom_ice_program_key(struct qcom_ice *ice, unsigned int slot,  in qcom_ice_program_key()  argument
380 	struct device *dev = ice->dev;  in qcom_ice_program_key()
397 		return qcom_ice_program_wrapped_key(ice, slot, blk_key);  in qcom_ice_program_key()
399 	if (ice->use_hwkm) {  in qcom_ice_program_key()
424 int qcom_ice_evict_key(struct qcom_ice *ice, int slot)  in qcom_ice_evict_key()  argument
426 	if (ice->hwkm_init_complete)  in qcom_ice_evict_key()
427 		slot = translate_hwkm_slot(ice, slot);  in qcom_ice_evict_key()
440 enum blk_crypto_key_type qcom_ice_get_supported_key_type(struct qcom_ice *ice)  in qcom_ice_get_supported_key_type()  argument
442 	if (ice->use_hwkm)  in qcom_ice_get_supported_key_type()
461 int qcom_ice_derive_sw_secret(struct qcom_ice *ice,  in qcom_ice_derive_sw_secret()  argument
483 int qcom_ice_generate_key(struct qcom_ice *ice,  in qcom_ice_generate_key()  argument
489 					QCOM_ICE_HWKM_WRAPPED_KEY_SIZE(ice->hwkm_version));  in qcom_ice_generate_key()
493 	return QCOM_ICE_HWKM_WRAPPED_KEY_SIZE(ice->hwkm_version);  in qcom_ice_generate_key()
509 int qcom_ice_prepare_key(struct qcom_ice *ice,  in qcom_ice_prepare_key()  argument
516 				       eph_key, QCOM_ICE_HWKM_WRAPPED_KEY_SIZE(ice->hwkm_version));  in qcom_ice_prepare_key()
522 	return QCOM_ICE_HWKM_WRAPPED_KEY_SIZE(ice->hwkm_version);  in qcom_ice_prepare_key()
537 int qcom_ice_import_key(struct qcom_ice *ice,  in qcom_ice_import_key()  argument
544 				      lt_key, QCOM_ICE_HWKM_WRAPPED_KEY_SIZE(ice->hwkm_version));  in qcom_ice_import_key()
548 	return QCOM_ICE_HWKM_WRAPPED_KEY_SIZE(ice->hwkm_version);  in qcom_ice_import_key()
611 	struct qcom_ice *ice;  in of_qcom_ice_get()  local
650 	ice = platform_get_drvdata(pdev);  in of_qcom_ice_get()
651 	if (!ice) {  in of_qcom_ice_get()
664 		ice = ERR_PTR(-EINVAL);  in of_qcom_ice_get()
667 	return ice;  in of_qcom_ice_get()
670 static void qcom_ice_put(const struct qcom_ice *ice)  in qcom_ice_put()  argument
672 	struct platform_device *pdev = to_platform_device(ice->dev);  in qcom_ice_put()
699 	struct qcom_ice *ice, **dr;  in devm_of_qcom_ice_get()  local
705 	ice = of_qcom_ice_get(dev);  in devm_of_qcom_ice_get()
706 	if (!IS_ERR_OR_NULL(ice)) {  in devm_of_qcom_ice_get()
707 		*dr = ice;  in devm_of_qcom_ice_get()
713 	return ice;  in devm_of_qcom_ice_get()