12703d4b2STomas Winkler /* 22703d4b2STomas Winkler * 32703d4b2STomas Winkler * Intel Management Engine Interface (Intel MEI) Linux driver 42703d4b2STomas Winkler * Copyright (c) 2003-2012, Intel Corporation. 52703d4b2STomas Winkler * 62703d4b2STomas Winkler * This program is free software; you can redistribute it and/or modify it 72703d4b2STomas Winkler * under the terms and conditions of the GNU General Public License, 82703d4b2STomas Winkler * version 2, as published by the Free Software Foundation. 92703d4b2STomas Winkler * 102703d4b2STomas Winkler * This program is distributed in the hope it will be useful, but WITHOUT 112703d4b2STomas Winkler * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 122703d4b2STomas Winkler * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 132703d4b2STomas Winkler * more details. 142703d4b2STomas Winkler * 152703d4b2STomas Winkler */ 162703d4b2STomas Winkler #include <linux/module.h> 172703d4b2STomas Winkler #include <linux/moduleparam.h> 182703d4b2STomas Winkler #include <linux/kernel.h> 192703d4b2STomas Winkler #include <linux/device.h> 202703d4b2STomas Winkler #include <linux/fs.h> 212703d4b2STomas Winkler #include <linux/errno.h> 222703d4b2STomas Winkler #include <linux/types.h> 232703d4b2STomas Winkler #include <linux/fcntl.h> 242703d4b2STomas Winkler #include <linux/pci.h> 252703d4b2STomas Winkler #include <linux/poll.h> 262703d4b2STomas Winkler #include <linux/ioctl.h> 272703d4b2STomas Winkler #include <linux/cdev.h> 282703d4b2STomas Winkler #include <linux/sched.h> 292703d4b2STomas Winkler #include <linux/uuid.h> 302703d4b2STomas Winkler #include <linux/compat.h> 312703d4b2STomas Winkler #include <linux/jiffies.h> 322703d4b2STomas Winkler #include <linux/interrupt.h> 332703d4b2STomas Winkler 34989561deSTomeu Vizoso #include <linux/pm_domain.h> 35180ea05bSTomas Winkler #include <linux/pm_runtime.h> 36180ea05bSTomas Winkler 372703d4b2STomas Winkler #include <linux/mei.h> 382703d4b2STomas Winkler 392703d4b2STomas Winkler #include "mei_dev.h" 402703d4b2STomas Winkler #include "client.h" 416e4cd27aSTomas Winkler #include "hw-me-regs.h" 426e4cd27aSTomas Winkler #include "hw-me.h" 432703d4b2STomas Winkler 442703d4b2STomas Winkler /* mei_pci_tbl - PCI Device ID Table */ 45a05f8f86STomas Winkler static const struct pci_device_id mei_me_pci_tbl[] = { 46f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_82946GZ, MEI_ME_ICH_CFG)}, 47f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_82G35, MEI_ME_ICH_CFG)}, 48f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_82Q965, MEI_ME_ICH_CFG)}, 49f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_82G965, MEI_ME_ICH_CFG)}, 50f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_82GM965, MEI_ME_ICH_CFG)}, 51f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_82GME965, MEI_ME_ICH_CFG)}, 52f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82Q35, MEI_ME_ICH_CFG)}, 53f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82G33, MEI_ME_ICH_CFG)}, 54f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82Q33, MEI_ME_ICH_CFG)}, 55f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82X38, MEI_ME_ICH_CFG)}, 56f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_3200, MEI_ME_ICH_CFG)}, 578d929d48SAlexander Usyskin 58f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_6, MEI_ME_ICH_CFG)}, 59f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_7, MEI_ME_ICH_CFG)}, 60f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_8, MEI_ME_ICH_CFG)}, 61f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_9, MEI_ME_ICH_CFG)}, 62f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_10, MEI_ME_ICH_CFG)}, 63f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_1, MEI_ME_ICH_CFG)}, 64f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_2, MEI_ME_ICH_CFG)}, 65f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_3, MEI_ME_ICH_CFG)}, 66f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_4, MEI_ME_ICH_CFG)}, 678d929d48SAlexander Usyskin 68f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_1, MEI_ME_ICH10_CFG)}, 69f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_2, MEI_ME_ICH10_CFG)}, 70f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_3, MEI_ME_ICH10_CFG)}, 71f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_4, MEI_ME_ICH10_CFG)}, 722703d4b2STomas Winkler 73f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_IBXPK_1, MEI_ME_PCH_CFG)}, 74f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_IBXPK_2, MEI_ME_PCH_CFG)}, 75f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_CPT_1, MEI_ME_PCH_CPT_PBG_CFG)}, 76f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_PBG_1, MEI_ME_PCH_CPT_PBG_CFG)}, 77f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_PPT_1, MEI_ME_PCH_CFG)}, 78f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_PPT_2, MEI_ME_PCH_CFG)}, 79f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_PPT_3, MEI_ME_PCH_CFG)}, 80f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_H, MEI_ME_PCH8_SPS_CFG)}, 81f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_W, MEI_ME_PCH8_SPS_CFG)}, 82f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_LP, MEI_ME_PCH8_CFG)}, 83f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_HR, MEI_ME_PCH8_SPS_CFG)}, 84f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_WPT_LP, MEI_ME_PCH8_CFG)}, 85f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_WPT_LP_2, MEI_ME_PCH8_CFG)}, 861625c7ecSTomas Winkler 87f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_SPT, MEI_ME_PCH8_CFG)}, 88f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_2, MEI_ME_PCH8_CFG)}, 89f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_H, MEI_ME_PCH8_SPS_CFG)}, 90f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_H_2, MEI_ME_PCH8_SPS_CFG)}, 91f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_LBG, MEI_ME_PCH8_CFG)}, 92dd16f6cdSTomas Winkler 93f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_BXT_M, MEI_ME_PCH8_CFG)}, 94f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_APL_I, MEI_ME_PCH8_CFG)}, 95f5ac3c49STomas Winkler 96f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_KBP, MEI_ME_PCH8_CFG)}, 97f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_KBP_2, MEI_ME_PCH8_CFG)}, 98ac182e8aSAlexander Usyskin 992703d4b2STomas Winkler /* required last entry */ 1002703d4b2STomas Winkler {0, } 1012703d4b2STomas Winkler }; 1022703d4b2STomas Winkler 103b68301e9STomas Winkler MODULE_DEVICE_TABLE(pci, mei_me_pci_tbl); 1042703d4b2STomas Winkler 105bbd6d050SRafael J. Wysocki #ifdef CONFIG_PM 106e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev); 107e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev); 108e13fa90cSTomas Winkler #else 109e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev) {} 110e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev) {} 111bbd6d050SRafael J. Wysocki #endif /* CONFIG_PM */ 112e13fa90cSTomas Winkler 1132703d4b2STomas Winkler /** 114ce23139cSAlexander Usyskin * mei_me_quirk_probe - probe for devices that doesn't valid ME interface 115393b148fSMasanari Iida * 1162703d4b2STomas Winkler * @pdev: PCI device structure 117c919951dSTomas Winkler * @cfg: per generation config 1182703d4b2STomas Winkler * 119a8605ea2SAlexander Usyskin * Return: true if ME Interface is valid, false otherwise 1202703d4b2STomas Winkler */ 121b68301e9STomas Winkler static bool mei_me_quirk_probe(struct pci_dev *pdev, 122c919951dSTomas Winkler const struct mei_cfg *cfg) 1232703d4b2STomas Winkler { 124c919951dSTomas Winkler if (cfg->quirk_probe && cfg->quirk_probe(pdev)) { 1252703d4b2STomas Winkler dev_info(&pdev->dev, "Device doesn't have valid ME Interface\n"); 1262703d4b2STomas Winkler return false; 1272703d4b2STomas Winkler } 128c919951dSTomas Winkler 129c919951dSTomas Winkler return true; 130c919951dSTomas Winkler } 131c919951dSTomas Winkler 1322703d4b2STomas Winkler /** 133ce23139cSAlexander Usyskin * mei_me_probe - Device Initialization Routine 1342703d4b2STomas Winkler * 1352703d4b2STomas Winkler * @pdev: PCI device structure 1362703d4b2STomas Winkler * @ent: entry in kcs_pci_tbl 1372703d4b2STomas Winkler * 138a8605ea2SAlexander Usyskin * Return: 0 on success, <0 on failure. 1392703d4b2STomas Winkler */ 140b68301e9STomas Winkler static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 1412703d4b2STomas Winkler { 142f5ac3c49STomas Winkler const struct mei_cfg *cfg; 1432703d4b2STomas Winkler struct mei_device *dev; 14452c34561STomas Winkler struct mei_me_hw *hw; 1451fa55b4eSAlexander Usyskin unsigned int irqflags; 1462703d4b2STomas Winkler int err; 1472703d4b2STomas Winkler 148f5ac3c49STomas Winkler cfg = mei_me_get_cfg(ent->driver_data); 149f5ac3c49STomas Winkler if (!cfg) 150f5ac3c49STomas Winkler return -ENODEV; 1512703d4b2STomas Winkler 152c919951dSTomas Winkler if (!mei_me_quirk_probe(pdev, cfg)) 153c919951dSTomas Winkler return -ENODEV; 1542703d4b2STomas Winkler 1552703d4b2STomas Winkler /* enable pci dev */ 156f8a09605STomas Winkler err = pcim_enable_device(pdev); 1572703d4b2STomas Winkler if (err) { 1582703d4b2STomas Winkler dev_err(&pdev->dev, "failed to enable pci device.\n"); 1592703d4b2STomas Winkler goto end; 1602703d4b2STomas Winkler } 1612703d4b2STomas Winkler /* set PCI host mastering */ 1622703d4b2STomas Winkler pci_set_master(pdev); 163f8a09605STomas Winkler /* pci request regions and mapping IO device memory for mei driver */ 164f8a09605STomas Winkler err = pcim_iomap_regions(pdev, BIT(0), KBUILD_MODNAME); 1652703d4b2STomas Winkler if (err) { 1662703d4b2STomas Winkler dev_err(&pdev->dev, "failed to get pci regions.\n"); 167f8a09605STomas Winkler goto end; 1682703d4b2STomas Winkler } 1693ecfb168STomas Winkler 1703ecfb168STomas Winkler if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) || 1713ecfb168STomas Winkler dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) { 1723ecfb168STomas Winkler 1733ecfb168STomas Winkler err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); 1743ecfb168STomas Winkler if (err) 1753ecfb168STomas Winkler err = dma_set_coherent_mask(&pdev->dev, 1763ecfb168STomas Winkler DMA_BIT_MASK(32)); 1773ecfb168STomas Winkler } 1783ecfb168STomas Winkler if (err) { 1793ecfb168STomas Winkler dev_err(&pdev->dev, "No usable DMA configuration, aborting\n"); 180f8a09605STomas Winkler goto end; 1813ecfb168STomas Winkler } 1823ecfb168STomas Winkler 1832703d4b2STomas Winkler /* allocates and initializes the mei dev structure */ 1848d929d48SAlexander Usyskin dev = mei_me_dev_init(pdev, cfg); 1852703d4b2STomas Winkler if (!dev) { 1862703d4b2STomas Winkler err = -ENOMEM; 187f8a09605STomas Winkler goto end; 1882703d4b2STomas Winkler } 18952c34561STomas Winkler hw = to_me_hw(dev); 190f8a09605STomas Winkler hw->mem_addr = pcim_iomap_table(pdev)[0]; 191f8a09605STomas Winkler 1922703d4b2STomas Winkler pci_enable_msi(pdev); 1932703d4b2STomas Winkler 1942703d4b2STomas Winkler /* request and enable interrupt */ 1951fa55b4eSAlexander Usyskin irqflags = pci_dev_msi_enabled(pdev) ? IRQF_ONESHOT : IRQF_SHARED; 1961fa55b4eSAlexander Usyskin 1972703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 19806ecd645STomas Winkler mei_me_irq_quick_handler, 19906ecd645STomas Winkler mei_me_irq_thread_handler, 2001fa55b4eSAlexander Usyskin irqflags, KBUILD_MODNAME, dev); 2012703d4b2STomas Winkler if (err) { 2022703d4b2STomas Winkler dev_err(&pdev->dev, "request_threaded_irq failure. irq = %d\n", 2032703d4b2STomas Winkler pdev->irq); 204f8a09605STomas Winkler goto end; 2052703d4b2STomas Winkler } 2062703d4b2STomas Winkler 207c4d589beSTomas Winkler if (mei_start(dev)) { 2082703d4b2STomas Winkler dev_err(&pdev->dev, "init hw failure.\n"); 2092703d4b2STomas Winkler err = -ENODEV; 2102703d4b2STomas Winkler goto release_irq; 2112703d4b2STomas Winkler } 2122703d4b2STomas Winkler 213180ea05bSTomas Winkler pm_runtime_set_autosuspend_delay(&pdev->dev, MEI_ME_RPM_TIMEOUT); 214180ea05bSTomas Winkler pm_runtime_use_autosuspend(&pdev->dev); 215180ea05bSTomas Winkler 216f3d8e878SAlexander Usyskin err = mei_register(dev, &pdev->dev); 2172703d4b2STomas Winkler if (err) 2181f7e489aSAlexander Usyskin goto stop; 2192703d4b2STomas Winkler 2202703d4b2STomas Winkler pci_set_drvdata(pdev, dev); 2212703d4b2STomas Winkler 222e13fa90cSTomas Winkler /* 223557909e1SAlexander Usyskin * MEI requires to resume from runtime suspend mode 224557909e1SAlexander Usyskin * in order to perform link reset flow upon system suspend. 225557909e1SAlexander Usyskin */ 226c2eac4d3SRafael J. Wysocki dev_pm_set_driver_flags(&pdev->dev, DPM_FLAG_NEVER_SKIP); 227557909e1SAlexander Usyskin 228557909e1SAlexander Usyskin /* 229e13fa90cSTomas Winkler * For not wake-able HW runtime pm framework 230e13fa90cSTomas Winkler * can't be used on pci device level. 231e13fa90cSTomas Winkler * Use domain runtime pm callbacks instead. 232e13fa90cSTomas Winkler */ 233e13fa90cSTomas Winkler if (!pci_dev_run_wake(pdev)) 234e13fa90cSTomas Winkler mei_me_set_pm_domain(dev); 235e13fa90cSTomas Winkler 236180ea05bSTomas Winkler if (mei_pg_is_enabled(dev)) 237180ea05bSTomas Winkler pm_runtime_put_noidle(&pdev->dev); 238180ea05bSTomas Winkler 239c4e87b52SAlexander Usyskin dev_dbg(&pdev->dev, "initialization successful.\n"); 2402703d4b2STomas Winkler 2412703d4b2STomas Winkler return 0; 2422703d4b2STomas Winkler 2431f7e489aSAlexander Usyskin stop: 2441f7e489aSAlexander Usyskin mei_stop(dev); 2452703d4b2STomas Winkler release_irq: 246dc844b0dSTomas Winkler mei_cancel_work(dev); 2472703d4b2STomas Winkler mei_disable_interrupts(dev); 2482703d4b2STomas Winkler free_irq(pdev->irq, dev); 2492703d4b2STomas Winkler end: 2502703d4b2STomas Winkler dev_err(&pdev->dev, "initialization failed.\n"); 2512703d4b2STomas Winkler return err; 2522703d4b2STomas Winkler } 2532703d4b2STomas Winkler 2542703d4b2STomas Winkler /** 2555c4c0106STomas Winkler * mei_me_shutdown - Device Removal Routine 2565c4c0106STomas Winkler * 2575c4c0106STomas Winkler * @pdev: PCI device structure 2585c4c0106STomas Winkler * 2595c4c0106STomas Winkler * mei_me_shutdown is called from the reboot notifier 2605c4c0106STomas Winkler * it's a simplified version of remove so we go down 2615c4c0106STomas Winkler * faster. 2625c4c0106STomas Winkler */ 2635c4c0106STomas Winkler static void mei_me_shutdown(struct pci_dev *pdev) 2645c4c0106STomas Winkler { 2655c4c0106STomas Winkler struct mei_device *dev; 2665c4c0106STomas Winkler 2675c4c0106STomas Winkler dev = pci_get_drvdata(pdev); 2685c4c0106STomas Winkler if (!dev) 2695c4c0106STomas Winkler return; 2705c4c0106STomas Winkler 2715c4c0106STomas Winkler dev_dbg(&pdev->dev, "shutdown\n"); 2725c4c0106STomas Winkler mei_stop(dev); 2735c4c0106STomas Winkler 2745c4c0106STomas Winkler if (!pci_dev_run_wake(pdev)) 2755c4c0106STomas Winkler mei_me_unset_pm_domain(dev); 2765c4c0106STomas Winkler 2775c4c0106STomas Winkler mei_disable_interrupts(dev); 2785c4c0106STomas Winkler free_irq(pdev->irq, dev); 2795c4c0106STomas Winkler } 2805c4c0106STomas Winkler 2815c4c0106STomas Winkler /** 282ce23139cSAlexander Usyskin * mei_me_remove - Device Removal Routine 2832703d4b2STomas Winkler * 2842703d4b2STomas Winkler * @pdev: PCI device structure 2852703d4b2STomas Winkler * 2865c4c0106STomas Winkler * mei_me_remove is called by the PCI subsystem to alert the driver 2872703d4b2STomas Winkler * that it should release a PCI device. 2882703d4b2STomas Winkler */ 289b68301e9STomas Winkler static void mei_me_remove(struct pci_dev *pdev) 2902703d4b2STomas Winkler { 2912703d4b2STomas Winkler struct mei_device *dev; 2922703d4b2STomas Winkler 2932703d4b2STomas Winkler dev = pci_get_drvdata(pdev); 2942703d4b2STomas Winkler if (!dev) 2952703d4b2STomas Winkler return; 2962703d4b2STomas Winkler 297180ea05bSTomas Winkler if (mei_pg_is_enabled(dev)) 298180ea05bSTomas Winkler pm_runtime_get_noresume(&pdev->dev); 299180ea05bSTomas Winkler 300ed6f7ac1SPaul Bolle dev_dbg(&pdev->dev, "stop\n"); 3017cb035d9STomas Winkler mei_stop(dev); 3022703d4b2STomas Winkler 303e13fa90cSTomas Winkler if (!pci_dev_run_wake(pdev)) 304e13fa90cSTomas Winkler mei_me_unset_pm_domain(dev); 305e13fa90cSTomas Winkler 3062703d4b2STomas Winkler mei_disable_interrupts(dev); 3072703d4b2STomas Winkler 3082703d4b2STomas Winkler free_irq(pdev->irq, dev); 3092703d4b2STomas Winkler 31030e53bb8STomas Winkler mei_deregister(dev); 3112703d4b2STomas Winkler } 312f8a09605STomas Winkler 31316833257SAlexander Usyskin #ifdef CONFIG_PM_SLEEP 314b68301e9STomas Winkler static int mei_me_pci_suspend(struct device *device) 3152703d4b2STomas Winkler { 3162703d4b2STomas Winkler struct pci_dev *pdev = to_pci_dev(device); 3172703d4b2STomas Winkler struct mei_device *dev = pci_get_drvdata(pdev); 3182703d4b2STomas Winkler 3192703d4b2STomas Winkler if (!dev) 3202703d4b2STomas Winkler return -ENODEV; 3212703d4b2STomas Winkler 322ed6f7ac1SPaul Bolle dev_dbg(&pdev->dev, "suspend\n"); 3232703d4b2STomas Winkler 3247cb035d9STomas Winkler mei_stop(dev); 3257cb035d9STomas Winkler 3267cb035d9STomas Winkler mei_disable_interrupts(dev); 3272703d4b2STomas Winkler 3282703d4b2STomas Winkler free_irq(pdev->irq, dev); 3292703d4b2STomas Winkler pci_disable_msi(pdev); 3302703d4b2STomas Winkler 3317cb035d9STomas Winkler return 0; 3322703d4b2STomas Winkler } 3332703d4b2STomas Winkler 334b68301e9STomas Winkler static int mei_me_pci_resume(struct device *device) 3352703d4b2STomas Winkler { 3362703d4b2STomas Winkler struct pci_dev *pdev = to_pci_dev(device); 3372703d4b2STomas Winkler struct mei_device *dev; 3381fa55b4eSAlexander Usyskin unsigned int irqflags; 3392703d4b2STomas Winkler int err; 3402703d4b2STomas Winkler 3412703d4b2STomas Winkler dev = pci_get_drvdata(pdev); 3422703d4b2STomas Winkler if (!dev) 3432703d4b2STomas Winkler return -ENODEV; 3442703d4b2STomas Winkler 3452703d4b2STomas Winkler pci_enable_msi(pdev); 3462703d4b2STomas Winkler 3471fa55b4eSAlexander Usyskin irqflags = pci_dev_msi_enabled(pdev) ? IRQF_ONESHOT : IRQF_SHARED; 3481fa55b4eSAlexander Usyskin 3492703d4b2STomas Winkler /* request and enable interrupt */ 3502703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 35106ecd645STomas Winkler mei_me_irq_quick_handler, 35206ecd645STomas Winkler mei_me_irq_thread_handler, 3531fa55b4eSAlexander Usyskin irqflags, KBUILD_MODNAME, dev); 3542703d4b2STomas Winkler 3552703d4b2STomas Winkler if (err) { 3562703d4b2STomas Winkler dev_err(&pdev->dev, "request_threaded_irq failed: irq = %d.\n", 3572703d4b2STomas Winkler pdev->irq); 3582703d4b2STomas Winkler return err; 3592703d4b2STomas Winkler } 3602703d4b2STomas Winkler 36133ec0826STomas Winkler err = mei_restart(dev); 36233ec0826STomas Winkler if (err) 36333ec0826STomas Winkler return err; 3642703d4b2STomas Winkler 3652703d4b2STomas Winkler /* Start timer if stopped in suspend */ 3662703d4b2STomas Winkler schedule_delayed_work(&dev->timer_work, HZ); 3672703d4b2STomas Winkler 36833ec0826STomas Winkler return 0; 3692703d4b2STomas Winkler } 370180ea05bSTomas Winkler #endif /* CONFIG_PM_SLEEP */ 37116833257SAlexander Usyskin 372bbd6d050SRafael J. Wysocki #ifdef CONFIG_PM 373180ea05bSTomas Winkler static int mei_me_pm_runtime_idle(struct device *device) 374180ea05bSTomas Winkler { 375180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 376180ea05bSTomas Winkler struct mei_device *dev; 377180ea05bSTomas Winkler 378180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime_idle\n"); 379180ea05bSTomas Winkler 380180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 381180ea05bSTomas Winkler if (!dev) 382180ea05bSTomas Winkler return -ENODEV; 383180ea05bSTomas Winkler if (mei_write_is_idle(dev)) 384d5d83f8aSAlexander Usyskin pm_runtime_autosuspend(device); 385180ea05bSTomas Winkler 386180ea05bSTomas Winkler return -EBUSY; 387180ea05bSTomas Winkler } 388180ea05bSTomas Winkler 389180ea05bSTomas Winkler static int mei_me_pm_runtime_suspend(struct device *device) 390180ea05bSTomas Winkler { 391180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 392180ea05bSTomas Winkler struct mei_device *dev; 393180ea05bSTomas Winkler int ret; 394180ea05bSTomas Winkler 395180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime suspend\n"); 396180ea05bSTomas Winkler 397180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 398180ea05bSTomas Winkler if (!dev) 399180ea05bSTomas Winkler return -ENODEV; 400180ea05bSTomas Winkler 401180ea05bSTomas Winkler mutex_lock(&dev->device_lock); 402180ea05bSTomas Winkler 403180ea05bSTomas Winkler if (mei_write_is_idle(dev)) 4042d1995fcSAlexander Usyskin ret = mei_me_pg_enter_sync(dev); 405180ea05bSTomas Winkler else 406180ea05bSTomas Winkler ret = -EAGAIN; 407180ea05bSTomas Winkler 408180ea05bSTomas Winkler mutex_unlock(&dev->device_lock); 409180ea05bSTomas Winkler 410180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime suspend ret=%d\n", ret); 411180ea05bSTomas Winkler 41277537ad2SAlexander Usyskin if (ret && ret != -EAGAIN) 41377537ad2SAlexander Usyskin schedule_work(&dev->reset_work); 41477537ad2SAlexander Usyskin 415180ea05bSTomas Winkler return ret; 416180ea05bSTomas Winkler } 417180ea05bSTomas Winkler 418180ea05bSTomas Winkler static int mei_me_pm_runtime_resume(struct device *device) 419180ea05bSTomas Winkler { 420180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 421180ea05bSTomas Winkler struct mei_device *dev; 422180ea05bSTomas Winkler int ret; 423180ea05bSTomas Winkler 424180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime resume\n"); 425180ea05bSTomas Winkler 426180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 427180ea05bSTomas Winkler if (!dev) 428180ea05bSTomas Winkler return -ENODEV; 429180ea05bSTomas Winkler 430180ea05bSTomas Winkler mutex_lock(&dev->device_lock); 431180ea05bSTomas Winkler 4322d1995fcSAlexander Usyskin ret = mei_me_pg_exit_sync(dev); 433180ea05bSTomas Winkler 434180ea05bSTomas Winkler mutex_unlock(&dev->device_lock); 435180ea05bSTomas Winkler 436180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime resume ret = %d\n", ret); 437180ea05bSTomas Winkler 43877537ad2SAlexander Usyskin if (ret) 43977537ad2SAlexander Usyskin schedule_work(&dev->reset_work); 44077537ad2SAlexander Usyskin 441180ea05bSTomas Winkler return ret; 442180ea05bSTomas Winkler } 443e13fa90cSTomas Winkler 444e13fa90cSTomas Winkler /** 4457efceb55SGeert Uytterhoeven * mei_me_set_pm_domain - fill and set pm domain structure for device 446e13fa90cSTomas Winkler * 447e13fa90cSTomas Winkler * @dev: mei_device 448e13fa90cSTomas Winkler */ 449e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev) 450e13fa90cSTomas Winkler { 451d08b8fc0STomas Winkler struct pci_dev *pdev = to_pci_dev(dev->dev); 452e13fa90cSTomas Winkler 453e13fa90cSTomas Winkler if (pdev->dev.bus && pdev->dev.bus->pm) { 454e13fa90cSTomas Winkler dev->pg_domain.ops = *pdev->dev.bus->pm; 455e13fa90cSTomas Winkler 456e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_suspend = mei_me_pm_runtime_suspend; 457e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_resume = mei_me_pm_runtime_resume; 458e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_idle = mei_me_pm_runtime_idle; 459e13fa90cSTomas Winkler 460989561deSTomeu Vizoso dev_pm_domain_set(&pdev->dev, &dev->pg_domain); 461e13fa90cSTomas Winkler } 462e13fa90cSTomas Winkler } 463e13fa90cSTomas Winkler 464e13fa90cSTomas Winkler /** 4657efceb55SGeert Uytterhoeven * mei_me_unset_pm_domain - clean pm domain structure for device 466e13fa90cSTomas Winkler * 467e13fa90cSTomas Winkler * @dev: mei_device 468e13fa90cSTomas Winkler */ 469e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev) 470e13fa90cSTomas Winkler { 471e13fa90cSTomas Winkler /* stop using pm callbacks if any */ 472989561deSTomeu Vizoso dev_pm_domain_set(dev->dev, NULL); 473e13fa90cSTomas Winkler } 474180ea05bSTomas Winkler 475180ea05bSTomas Winkler static const struct dev_pm_ops mei_me_pm_ops = { 476180ea05bSTomas Winkler SET_SYSTEM_SLEEP_PM_OPS(mei_me_pci_suspend, 477180ea05bSTomas Winkler mei_me_pci_resume) 478180ea05bSTomas Winkler SET_RUNTIME_PM_OPS( 479180ea05bSTomas Winkler mei_me_pm_runtime_suspend, 480180ea05bSTomas Winkler mei_me_pm_runtime_resume, 481180ea05bSTomas Winkler mei_me_pm_runtime_idle) 482180ea05bSTomas Winkler }; 483180ea05bSTomas Winkler 484b68301e9STomas Winkler #define MEI_ME_PM_OPS (&mei_me_pm_ops) 4852703d4b2STomas Winkler #else 486b68301e9STomas Winkler #define MEI_ME_PM_OPS NULL 487180ea05bSTomas Winkler #endif /* CONFIG_PM */ 4882703d4b2STomas Winkler /* 4892703d4b2STomas Winkler * PCI driver structure 4902703d4b2STomas Winkler */ 491b68301e9STomas Winkler static struct pci_driver mei_me_driver = { 4922703d4b2STomas Winkler .name = KBUILD_MODNAME, 493b68301e9STomas Winkler .id_table = mei_me_pci_tbl, 494b68301e9STomas Winkler .probe = mei_me_probe, 495b68301e9STomas Winkler .remove = mei_me_remove, 4965c4c0106STomas Winkler .shutdown = mei_me_shutdown, 497b68301e9STomas Winkler .driver.pm = MEI_ME_PM_OPS, 49867de6bf1SAlexander Usyskin .driver.probe_type = PROBE_PREFER_ASYNCHRONOUS, 4992703d4b2STomas Winkler }; 5002703d4b2STomas Winkler 501b68301e9STomas Winkler module_pci_driver(mei_me_driver); 5022703d4b2STomas Winkler 5032703d4b2STomas Winkler MODULE_AUTHOR("Intel Corporation"); 5042703d4b2STomas Winkler MODULE_DESCRIPTION("Intel(R) Management Engine Interface"); 5052703d4b2STomas Winkler MODULE_LICENSE("GPL v2"); 506