1 // SPDX-License-Identifier: GPL-2.0-or-later
5  * Copyright (C) 2011-2013 Samsung India Software Operations
48 	return fn < 32 && fn >= 0 && (host->dsm_fns & (1u << fn));  in __intel_dsm_supported()
63 		return -EOPNOTSUPP;  in __intel_dsm()
65 	if (obj->type != ACPI_TYPE_BUFFER || obj->buffer.length < 1) {  in __intel_dsm()
66 		err = -EINVAL;  in __intel_dsm()
70 	len = min_t(size_t, obj->buffer.length, 4);  in __intel_dsm()
73 	memcpy(result, obj->buffer.pointer, len);  in __intel_dsm()
84 		return -EOPNOTSUPP;  in intel_dsm()
93 	err = __intel_dsm(intel_host, dev, INTEL_DSM_FNS, &intel_host->dsm_fns);  in intel_dsm_init()
94 	dev_dbg(dev, "DSM fns %#x, error %d\n", intel_host->dsm_fns, err);  in intel_dsm_init()
101 	if (status == POST_CHANGE && hba->caps & UFSHCD_CAP_CRYPTO) {  in ufs_intel_hce_enable_notify()
143 	struct ufs_pa_layer_attr pwr_info = hba->pwr_info;  in ufs_intel_set_lanes()
150 		dev_err(hba->dev, "%s: Setting %u lanes, err = %d\n",  in ufs_intel_set_lanes()
165 		    (hba->pwr_info.lane_rx != 2 || hba->pwr_info.lane_tx != 2))  in ufs_intel_lkf_pwr_change_notify()
229 	host->active_ltr = readl(hba->mmio_base + INTEL_ACTIVELTR);  in intel_cache_ltr()
230 	host->idle_ltr = readl(hba->mmio_base + INTEL_IDLELTR);  in intel_cache_ltr()
246 	ltr = readl(hba->mmio_base + INTEL_ACTIVELTR);  in intel_ltr_set()
265 	if (ltr == host->active_ltr)  in intel_ltr_set()
268 	writel(ltr, hba->mmio_base + INTEL_ACTIVELTR);  in intel_ltr_set()
269 	writel(ltr, hba->mmio_base + INTEL_IDLELTR);  in intel_ltr_set()
279 	dev->power.set_latency_tolerance = intel_ltr_set;  in intel_ltr_expose()
286 	dev->power.set_latency_tolerance = NULL;  in intel_ltr_hide()
291 	struct dentry *dir = debugfs_create_dir(dev_name(hba->dev), NULL);  in intel_add_debugfs()
296 	host->debugfs_root = dir;  in intel_add_debugfs()
297 	debugfs_create_x32("active_ltr", 0444, dir, &host->active_ltr);  in intel_add_debugfs()
298 	debugfs_create_x32("idle_ltr", 0444, dir, &host->idle_ltr);  in intel_add_debugfs()
305 	debugfs_remove_recursive(host->debugfs_root);  in intel_remove_debugfs()
312 	if (INTEL_DSM_SUPPORTED(host, RESET)) {  in ufs_intel_device_reset()
316 		err = intel_dsm(host, hba->dev, INTEL_DSM_RESET, &result);  in ufs_intel_device_reset()
318 			err = -EIO;  in ufs_intel_device_reset()
320 			dev_err(hba->dev, "%s: DSM error %d result %u\n",  in ufs_intel_device_reset()
325 	if (!host->reset_gpio)  in ufs_intel_device_reset()
326 		return -EOPNOTSUPP;  in ufs_intel_device_reset()
328 	gpiod_set_value_cansleep(host->reset_gpio, 1);  in ufs_intel_device_reset()
331 	gpiod_set_value_cansleep(host->reset_gpio, 0);  in ufs_intel_device_reset()
340 	return devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);  in ufs_intel_get_reset_gpio()
347 	hba->caps |= UFSHCD_CAP_RPM_AUTOSUSPEND;  in ufs_intel_common_init()
349 	host = devm_kzalloc(hba->dev, sizeof(*host), GFP_KERNEL);  in ufs_intel_common_init()
351 		return -ENOMEM;  in ufs_intel_common_init()
353 	intel_dsm_init(host, hba->dev);  in ufs_intel_common_init()
354 	if (INTEL_DSM_SUPPORTED(host, RESET)) {  in ufs_intel_common_init()
355 		if (hba->vops->device_reset)  in ufs_intel_common_init()
356 			hba->caps |= UFSHCD_CAP_DEEPSLEEP;  in ufs_intel_common_init()
358 		if (hba->vops->device_reset)  in ufs_intel_common_init()
359 			host->reset_gpio = ufs_intel_get_reset_gpio(hba->dev);  in ufs_intel_common_init()
360 		if (IS_ERR(host->reset_gpio)) {  in ufs_intel_common_init()
361 			dev_err(hba->dev, "%s: failed to get reset GPIO, error %ld\n",  in ufs_intel_common_init()
362 				__func__, PTR_ERR(host->reset_gpio));  in ufs_intel_common_init()
363 			host->reset_gpio = NULL;  in ufs_intel_common_init()
365 		if (host->reset_gpio) {  in ufs_intel_common_init()
366 			gpiod_set_value_cansleep(host->reset_gpio, 0);  in ufs_intel_common_init()
367 			hba->caps |= UFSHCD_CAP_DEEPSLEEP;  in ufs_intel_common_init()
370 	intel_ltr_expose(hba->dev);  in ufs_intel_common_init()
378 	intel_ltr_hide(hba->dev);  in ufs_intel_common_exit()
389 			dev_err(hba->dev, "%s: hibern8 exit failed %d\n",  in ufs_intel_resume()
392 			 * Force reset and restore. Any other actions can lead  in ufs_intel_resume()
404 	hba->quirks |= UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8;  in ufs_intel_ehl_init()
410 	/* LKF always needs a full reset, so set PM accordingly */  in ufs_intel_lkf_late_init()
411 	if (hba->caps & UFSHCD_CAP_DEEPSLEEP) {  in ufs_intel_lkf_late_init()
412 		hba->spm_lvl = UFS_PM_LVL_6;  in ufs_intel_lkf_late_init()
413 		hba->rpm_lvl = UFS_PM_LVL_6;  in ufs_intel_lkf_late_init()
415 		hba->spm_lvl = UFS_PM_LVL_5;  in ufs_intel_lkf_late_init()
416 		hba->rpm_lvl = UFS_PM_LVL_5;  in ufs_intel_lkf_late_init()
425 	hba->nop_out_timeout = 200;  in ufs_intel_lkf_init()
426 	hba->quirks |= UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8;  in ufs_intel_lkf_init()
427 	hba->caps |= UFSHCD_CAP_CRYPTO;  in ufs_intel_lkf_init()
430 	ufs_host->late_init = ufs_intel_lkf_late_init;  in ufs_intel_lkf_init()
436 	hba->nop_out_timeout = 200;  in ufs_intel_adl_init()
437 	hba->quirks |= UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8;  in ufs_intel_adl_init()
438 	hba->caps |= UFSHCD_CAP_WB_EN;  in ufs_intel_adl_init()
444 	hba->caps |= UFSHCD_CAP_CRYPTO | UFSHCD_CAP_WB_EN;  in ufs_intel_mtl_init()
449 	.name                   = "intel-pci",
453 	.resume			= ufs_intel_resume,
457 	.name                   = "intel-pci",
461 	.resume			= ufs_intel_resume,
465 	.name                   = "intel-pci",
472 	.resume			= ufs_intel_resume,
477 	.name			= "intel-pci",
481 	.resume			= ufs_intel_resume,
486 	.name                   = "intel-pci",
491 	.resume			= ufs_intel_resume,
500 	/* Force a full reset and restore */  in ufshcd_pci_restore()
508  * ufshcd_pci_remove - de-allocate PCI/SCSI host and host memory space
516 	pm_runtime_forbid(&pdev->dev);  in ufshcd_pci_remove()
517 	pm_runtime_get_noresume(&pdev->dev);  in ufshcd_pci_remove()
523  * ufshcd_pci_probe - probe routine of the driver
527  * Return: 0 on success, non-zero value on failure.
539 		dev_err(&pdev->dev, "pcim_enable_device failed\n");  in ufshcd_pci_probe()
547 		dev_err(&pdev->dev, "request and iomap failed\n");  in ufshcd_pci_probe()
553 	err = ufshcd_alloc_host(&pdev->dev, &hba);  in ufshcd_pci_probe()
555 		dev_err(&pdev->dev, "Allocation failed\n");  in ufshcd_pci_probe()
559 	hba->vops = (struct ufs_hba_variant_ops *)id->driver_data;  in ufshcd_pci_probe()
561 	err = ufshcd_init(hba, mmio_base, pdev->irq);  in ufshcd_pci_probe()
563 		dev_err(&pdev->dev, "Initialization failed\n");  in ufshcd_pci_probe()
569 	if (ufs_host && ufs_host->late_init)  in ufshcd_pci_probe()
570 		ufs_host->late_init(hba);  in ufshcd_pci_probe()
572 	pm_runtime_put_noidle(&pdev->dev);  in ufshcd_pci_probe()
573 	pm_runtime_allow(&pdev->dev);  in ufshcd_pci_probe()
582 	.resume		= ufshcd_system_resume,