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[] = { 468d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_82946GZ, mei_me_legacy_cfg)}, 478d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_82G35, mei_me_legacy_cfg)}, 488d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_82Q965, mei_me_legacy_cfg)}, 498d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_82G965, mei_me_legacy_cfg)}, 508d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_82GM965, mei_me_legacy_cfg)}, 518d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_82GME965, mei_me_legacy_cfg)}, 528d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82Q35, mei_me_legacy_cfg)}, 538d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82G33, mei_me_legacy_cfg)}, 548d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82Q33, mei_me_legacy_cfg)}, 558d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82X38, mei_me_legacy_cfg)}, 568d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_3200, mei_me_legacy_cfg)}, 578d929d48SAlexander Usyskin 588d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_6, mei_me_legacy_cfg)}, 598d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_7, mei_me_legacy_cfg)}, 608d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_8, mei_me_legacy_cfg)}, 618d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_9, mei_me_legacy_cfg)}, 628d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_10, mei_me_legacy_cfg)}, 638d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_1, mei_me_legacy_cfg)}, 648d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_2, mei_me_legacy_cfg)}, 658d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_3, mei_me_legacy_cfg)}, 668d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_4, mei_me_legacy_cfg)}, 678d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_1, mei_me_ich_cfg)}, 688d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_2, mei_me_ich_cfg)}, 698d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_3, mei_me_ich_cfg)}, 708d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_4, mei_me_ich_cfg)}, 718d929d48SAlexander Usyskin 728d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_IBXPK_1, mei_me_pch_cfg)}, 738d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_IBXPK_2, mei_me_pch_cfg)}, 74c919951dSTomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_CPT_1, mei_me_pch_cpt_pbg_cfg)}, 75c919951dSTomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_PBG_1, mei_me_pch_cpt_pbg_cfg)}, 768d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_PPT_1, mei_me_pch_cfg)}, 778d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_PPT_2, mei_me_pch_cfg)}, 788d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_PPT_3, mei_me_pch_cfg)}, 79edca5ea3SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_H, mei_me_pch8_sps_cfg)}, 80edca5ea3SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_W, mei_me_pch8_sps_cfg)}, 81edca5ea3SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_LP, mei_me_pch8_cfg)}, 82edca5ea3SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_HR, mei_me_pch8_sps_cfg)}, 83edca5ea3SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_WPT_LP, mei_me_pch8_cfg)}, 84edca5ea3SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_WPT_LP_2, mei_me_pch8_cfg)}, 852703d4b2STomas Winkler 861625c7ecSTomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_SPT, mei_me_pch8_cfg)}, 871625c7ecSTomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_2, mei_me_pch8_cfg)}, 888c57cac1STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_H, mei_me_pch8_sps_cfg)}, 898c57cac1STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_H_2, mei_me_pch8_sps_cfg)}, 909ff2007bSTomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_LBG, mei_me_pch8_cfg)}, 911625c7ecSTomas Winkler 92dd16f6cdSTomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_BXT_M, mei_me_pch8_cfg)}, 93dd16f6cdSTomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_APL_I, mei_me_pch8_cfg)}, 94dd16f6cdSTomas Winkler 95ac182e8aSAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_KBP, mei_me_pch8_cfg)}, 96ac182e8aSAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_KBP_2, mei_me_pch8_cfg)}, 97ac182e8aSAlexander Usyskin 982703d4b2STomas Winkler /* required last entry */ 992703d4b2STomas Winkler {0, } 1002703d4b2STomas Winkler }; 1012703d4b2STomas Winkler 102b68301e9STomas Winkler MODULE_DEVICE_TABLE(pci, mei_me_pci_tbl); 1032703d4b2STomas Winkler 104bbd6d050SRafael J. Wysocki #ifdef CONFIG_PM 105e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev); 106e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev); 107e13fa90cSTomas Winkler #else 108e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev) {} 109e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev) {} 110bbd6d050SRafael J. Wysocki #endif /* CONFIG_PM */ 111e13fa90cSTomas Winkler 1122703d4b2STomas Winkler /** 113ce23139cSAlexander Usyskin * mei_me_quirk_probe - probe for devices that doesn't valid ME interface 114393b148fSMasanari Iida * 1152703d4b2STomas Winkler * @pdev: PCI device structure 116c919951dSTomas Winkler * @cfg: per generation config 1172703d4b2STomas Winkler * 118a8605ea2SAlexander Usyskin * Return: true if ME Interface is valid, false otherwise 1192703d4b2STomas Winkler */ 120b68301e9STomas Winkler static bool mei_me_quirk_probe(struct pci_dev *pdev, 121c919951dSTomas Winkler const struct mei_cfg *cfg) 1222703d4b2STomas Winkler { 123c919951dSTomas Winkler if (cfg->quirk_probe && cfg->quirk_probe(pdev)) { 1242703d4b2STomas Winkler dev_info(&pdev->dev, "Device doesn't have valid ME Interface\n"); 1252703d4b2STomas Winkler return false; 1262703d4b2STomas Winkler } 127c919951dSTomas Winkler 128c919951dSTomas Winkler return true; 129c919951dSTomas Winkler } 130c919951dSTomas Winkler 1312703d4b2STomas Winkler /** 132ce23139cSAlexander Usyskin * mei_me_probe - Device Initialization Routine 1332703d4b2STomas Winkler * 1342703d4b2STomas Winkler * @pdev: PCI device structure 1352703d4b2STomas Winkler * @ent: entry in kcs_pci_tbl 1362703d4b2STomas Winkler * 137a8605ea2SAlexander Usyskin * Return: 0 on success, <0 on failure. 1382703d4b2STomas Winkler */ 139b68301e9STomas Winkler static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 1402703d4b2STomas Winkler { 1418d929d48SAlexander Usyskin const struct mei_cfg *cfg = (struct mei_cfg *)(ent->driver_data); 1422703d4b2STomas Winkler struct mei_device *dev; 14352c34561STomas Winkler struct mei_me_hw *hw; 1441fa55b4eSAlexander Usyskin unsigned int irqflags; 1452703d4b2STomas Winkler int err; 1462703d4b2STomas Winkler 1472703d4b2STomas Winkler 148c919951dSTomas Winkler if (!mei_me_quirk_probe(pdev, cfg)) 149c919951dSTomas Winkler return -ENODEV; 1502703d4b2STomas Winkler 1512703d4b2STomas Winkler /* enable pci dev */ 1522703d4b2STomas Winkler err = pci_enable_device(pdev); 1532703d4b2STomas Winkler if (err) { 1542703d4b2STomas Winkler dev_err(&pdev->dev, "failed to enable pci device.\n"); 1552703d4b2STomas Winkler goto end; 1562703d4b2STomas Winkler } 1572703d4b2STomas Winkler /* set PCI host mastering */ 1582703d4b2STomas Winkler pci_set_master(pdev); 1592703d4b2STomas Winkler /* pci request regions for mei driver */ 1602703d4b2STomas Winkler err = pci_request_regions(pdev, KBUILD_MODNAME); 1612703d4b2STomas Winkler if (err) { 1622703d4b2STomas Winkler dev_err(&pdev->dev, "failed to get pci regions.\n"); 1632703d4b2STomas Winkler goto disable_device; 1642703d4b2STomas Winkler } 1653ecfb168STomas Winkler 1663ecfb168STomas Winkler if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) || 1673ecfb168STomas Winkler dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) { 1683ecfb168STomas Winkler 1693ecfb168STomas Winkler err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); 1703ecfb168STomas Winkler if (err) 1713ecfb168STomas Winkler err = dma_set_coherent_mask(&pdev->dev, 1723ecfb168STomas Winkler DMA_BIT_MASK(32)); 1733ecfb168STomas Winkler } 1743ecfb168STomas Winkler if (err) { 1753ecfb168STomas Winkler dev_err(&pdev->dev, "No usable DMA configuration, aborting\n"); 1763ecfb168STomas Winkler goto release_regions; 1773ecfb168STomas Winkler } 1783ecfb168STomas Winkler 1793ecfb168STomas Winkler 1802703d4b2STomas Winkler /* allocates and initializes the mei dev structure */ 1818d929d48SAlexander Usyskin dev = mei_me_dev_init(pdev, cfg); 1822703d4b2STomas Winkler if (!dev) { 1832703d4b2STomas Winkler err = -ENOMEM; 1842703d4b2STomas Winkler goto release_regions; 1852703d4b2STomas Winkler } 18652c34561STomas Winkler hw = to_me_hw(dev); 1872703d4b2STomas Winkler /* mapping IO device memory */ 18852c34561STomas Winkler hw->mem_addr = pci_iomap(pdev, 0, 0); 18952c34561STomas Winkler if (!hw->mem_addr) { 1902703d4b2STomas Winkler dev_err(&pdev->dev, "mapping I/O device memory failure.\n"); 1912703d4b2STomas Winkler err = -ENOMEM; 1922703d4b2STomas Winkler goto free_device; 1932703d4b2STomas Winkler } 1942703d4b2STomas Winkler pci_enable_msi(pdev); 1952703d4b2STomas Winkler 1962703d4b2STomas Winkler /* request and enable interrupt */ 1971fa55b4eSAlexander Usyskin irqflags = pci_dev_msi_enabled(pdev) ? IRQF_ONESHOT : IRQF_SHARED; 1981fa55b4eSAlexander Usyskin 1992703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 20006ecd645STomas Winkler mei_me_irq_quick_handler, 20106ecd645STomas Winkler mei_me_irq_thread_handler, 2021fa55b4eSAlexander Usyskin irqflags, KBUILD_MODNAME, dev); 2032703d4b2STomas Winkler if (err) { 2042703d4b2STomas Winkler dev_err(&pdev->dev, "request_threaded_irq failure. irq = %d\n", 2052703d4b2STomas Winkler pdev->irq); 2062703d4b2STomas Winkler goto disable_msi; 2072703d4b2STomas Winkler } 2082703d4b2STomas Winkler 209c4d589beSTomas Winkler if (mei_start(dev)) { 2102703d4b2STomas Winkler dev_err(&pdev->dev, "init hw failure.\n"); 2112703d4b2STomas Winkler err = -ENODEV; 2122703d4b2STomas Winkler goto release_irq; 2132703d4b2STomas Winkler } 2142703d4b2STomas Winkler 215180ea05bSTomas Winkler pm_runtime_set_autosuspend_delay(&pdev->dev, MEI_ME_RPM_TIMEOUT); 216180ea05bSTomas Winkler pm_runtime_use_autosuspend(&pdev->dev); 217180ea05bSTomas Winkler 218f3d8e878SAlexander Usyskin err = mei_register(dev, &pdev->dev); 2192703d4b2STomas Winkler if (err) 2201f7e489aSAlexander Usyskin goto stop; 2212703d4b2STomas Winkler 2222703d4b2STomas Winkler pci_set_drvdata(pdev, dev); 2232703d4b2STomas Winkler 224e13fa90cSTomas Winkler /* 225e13fa90cSTomas Winkler * For not wake-able HW runtime pm framework 226e13fa90cSTomas Winkler * can't be used on pci device level. 227e13fa90cSTomas Winkler * Use domain runtime pm callbacks instead. 228e13fa90cSTomas Winkler */ 229e13fa90cSTomas Winkler if (!pci_dev_run_wake(pdev)) 230e13fa90cSTomas Winkler mei_me_set_pm_domain(dev); 231e13fa90cSTomas Winkler 232180ea05bSTomas Winkler if (mei_pg_is_enabled(dev)) 233180ea05bSTomas Winkler pm_runtime_put_noidle(&pdev->dev); 234180ea05bSTomas Winkler 235c4e87b52SAlexander Usyskin dev_dbg(&pdev->dev, "initialization successful.\n"); 2362703d4b2STomas Winkler 2372703d4b2STomas Winkler return 0; 2382703d4b2STomas Winkler 2391f7e489aSAlexander Usyskin stop: 2401f7e489aSAlexander Usyskin mei_stop(dev); 2412703d4b2STomas Winkler release_irq: 242dc844b0dSTomas Winkler mei_cancel_work(dev); 2432703d4b2STomas Winkler mei_disable_interrupts(dev); 2442703d4b2STomas Winkler free_irq(pdev->irq, dev); 2452703d4b2STomas Winkler disable_msi: 2462703d4b2STomas Winkler pci_disable_msi(pdev); 24752c34561STomas Winkler pci_iounmap(pdev, hw->mem_addr); 2482703d4b2STomas Winkler free_device: 2492703d4b2STomas Winkler kfree(dev); 2502703d4b2STomas Winkler release_regions: 2512703d4b2STomas Winkler pci_release_regions(pdev); 2522703d4b2STomas Winkler disable_device: 2532703d4b2STomas Winkler pci_disable_device(pdev); 2542703d4b2STomas Winkler end: 2552703d4b2STomas Winkler dev_err(&pdev->dev, "initialization failed.\n"); 2562703d4b2STomas Winkler return err; 2572703d4b2STomas Winkler } 2582703d4b2STomas Winkler 2592703d4b2STomas Winkler /** 260ce23139cSAlexander Usyskin * mei_me_remove - Device Removal Routine 2612703d4b2STomas Winkler * 2622703d4b2STomas Winkler * @pdev: PCI device structure 2632703d4b2STomas Winkler * 2642703d4b2STomas Winkler * mei_remove is called by the PCI subsystem to alert the driver 2652703d4b2STomas Winkler * that it should release a PCI device. 2662703d4b2STomas Winkler */ 267b68301e9STomas Winkler static void mei_me_remove(struct pci_dev *pdev) 2682703d4b2STomas Winkler { 2692703d4b2STomas Winkler struct mei_device *dev; 27052c34561STomas Winkler struct mei_me_hw *hw; 2712703d4b2STomas Winkler 2722703d4b2STomas Winkler dev = pci_get_drvdata(pdev); 2732703d4b2STomas Winkler if (!dev) 2742703d4b2STomas Winkler return; 2752703d4b2STomas Winkler 276180ea05bSTomas Winkler if (mei_pg_is_enabled(dev)) 277180ea05bSTomas Winkler pm_runtime_get_noresume(&pdev->dev); 278180ea05bSTomas Winkler 27952c34561STomas Winkler hw = to_me_hw(dev); 28052c34561STomas Winkler 2812703d4b2STomas Winkler 282ed6f7ac1SPaul Bolle dev_dbg(&pdev->dev, "stop\n"); 2837cb035d9STomas Winkler mei_stop(dev); 2842703d4b2STomas Winkler 285e13fa90cSTomas Winkler if (!pci_dev_run_wake(pdev)) 286e13fa90cSTomas Winkler mei_me_unset_pm_domain(dev); 287e13fa90cSTomas Winkler 2882703d4b2STomas Winkler /* disable interrupts */ 2892703d4b2STomas Winkler mei_disable_interrupts(dev); 2902703d4b2STomas Winkler 2912703d4b2STomas Winkler free_irq(pdev->irq, dev); 2922703d4b2STomas Winkler pci_disable_msi(pdev); 2932703d4b2STomas Winkler 29452c34561STomas Winkler if (hw->mem_addr) 29552c34561STomas Winkler pci_iounmap(pdev, hw->mem_addr); 2962703d4b2STomas Winkler 29730e53bb8STomas Winkler mei_deregister(dev); 29830e53bb8STomas Winkler 2992703d4b2STomas Winkler kfree(dev); 3002703d4b2STomas Winkler 3012703d4b2STomas Winkler pci_release_regions(pdev); 3022703d4b2STomas Winkler pci_disable_device(pdev); 3032703d4b2STomas Winkler 3042703d4b2STomas Winkler 3052703d4b2STomas Winkler } 30616833257SAlexander Usyskin #ifdef CONFIG_PM_SLEEP 307b68301e9STomas Winkler static int mei_me_pci_suspend(struct device *device) 3082703d4b2STomas Winkler { 3092703d4b2STomas Winkler struct pci_dev *pdev = to_pci_dev(device); 3102703d4b2STomas Winkler struct mei_device *dev = pci_get_drvdata(pdev); 3112703d4b2STomas Winkler 3122703d4b2STomas Winkler if (!dev) 3132703d4b2STomas Winkler return -ENODEV; 3142703d4b2STomas Winkler 315ed6f7ac1SPaul Bolle dev_dbg(&pdev->dev, "suspend\n"); 3162703d4b2STomas Winkler 3177cb035d9STomas Winkler mei_stop(dev); 3187cb035d9STomas Winkler 3197cb035d9STomas Winkler mei_disable_interrupts(dev); 3202703d4b2STomas Winkler 3212703d4b2STomas Winkler free_irq(pdev->irq, dev); 3222703d4b2STomas Winkler pci_disable_msi(pdev); 3232703d4b2STomas Winkler 3247cb035d9STomas Winkler return 0; 3252703d4b2STomas Winkler } 3262703d4b2STomas Winkler 327b68301e9STomas Winkler static int mei_me_pci_resume(struct device *device) 3282703d4b2STomas Winkler { 3292703d4b2STomas Winkler struct pci_dev *pdev = to_pci_dev(device); 3302703d4b2STomas Winkler struct mei_device *dev; 3311fa55b4eSAlexander Usyskin unsigned int irqflags; 3322703d4b2STomas Winkler int err; 3332703d4b2STomas Winkler 3342703d4b2STomas Winkler dev = pci_get_drvdata(pdev); 3352703d4b2STomas Winkler if (!dev) 3362703d4b2STomas Winkler return -ENODEV; 3372703d4b2STomas Winkler 3382703d4b2STomas Winkler pci_enable_msi(pdev); 3392703d4b2STomas Winkler 3401fa55b4eSAlexander Usyskin irqflags = pci_dev_msi_enabled(pdev) ? IRQF_ONESHOT : IRQF_SHARED; 3411fa55b4eSAlexander Usyskin 3422703d4b2STomas Winkler /* request and enable interrupt */ 3432703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 34406ecd645STomas Winkler mei_me_irq_quick_handler, 34506ecd645STomas Winkler mei_me_irq_thread_handler, 3461fa55b4eSAlexander Usyskin irqflags, KBUILD_MODNAME, dev); 3472703d4b2STomas Winkler 3482703d4b2STomas Winkler if (err) { 3492703d4b2STomas Winkler dev_err(&pdev->dev, "request_threaded_irq failed: irq = %d.\n", 3502703d4b2STomas Winkler pdev->irq); 3512703d4b2STomas Winkler return err; 3522703d4b2STomas Winkler } 3532703d4b2STomas Winkler 35433ec0826STomas Winkler err = mei_restart(dev); 35533ec0826STomas Winkler if (err) 35633ec0826STomas Winkler return err; 3572703d4b2STomas Winkler 3582703d4b2STomas Winkler /* Start timer if stopped in suspend */ 3592703d4b2STomas Winkler schedule_delayed_work(&dev->timer_work, HZ); 3602703d4b2STomas Winkler 36133ec0826STomas Winkler return 0; 3622703d4b2STomas Winkler } 363180ea05bSTomas Winkler #endif /* CONFIG_PM_SLEEP */ 36416833257SAlexander Usyskin 365bbd6d050SRafael J. Wysocki #ifdef CONFIG_PM 366180ea05bSTomas Winkler static int mei_me_pm_runtime_idle(struct device *device) 367180ea05bSTomas Winkler { 368180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 369180ea05bSTomas Winkler struct mei_device *dev; 370180ea05bSTomas Winkler 371180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime_idle\n"); 372180ea05bSTomas Winkler 373180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 374180ea05bSTomas Winkler if (!dev) 375180ea05bSTomas Winkler return -ENODEV; 376180ea05bSTomas Winkler if (mei_write_is_idle(dev)) 377d5d83f8aSAlexander Usyskin pm_runtime_autosuspend(device); 378180ea05bSTomas Winkler 379180ea05bSTomas Winkler return -EBUSY; 380180ea05bSTomas Winkler } 381180ea05bSTomas Winkler 382180ea05bSTomas Winkler static int mei_me_pm_runtime_suspend(struct device *device) 383180ea05bSTomas Winkler { 384180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 385180ea05bSTomas Winkler struct mei_device *dev; 386180ea05bSTomas Winkler int ret; 387180ea05bSTomas Winkler 388180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime suspend\n"); 389180ea05bSTomas Winkler 390180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 391180ea05bSTomas Winkler if (!dev) 392180ea05bSTomas Winkler return -ENODEV; 393180ea05bSTomas Winkler 394180ea05bSTomas Winkler mutex_lock(&dev->device_lock); 395180ea05bSTomas Winkler 396180ea05bSTomas Winkler if (mei_write_is_idle(dev)) 3972d1995fcSAlexander Usyskin ret = mei_me_pg_enter_sync(dev); 398180ea05bSTomas Winkler else 399180ea05bSTomas Winkler ret = -EAGAIN; 400180ea05bSTomas Winkler 401180ea05bSTomas Winkler mutex_unlock(&dev->device_lock); 402180ea05bSTomas Winkler 403180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime suspend ret=%d\n", ret); 404180ea05bSTomas Winkler 40577537ad2SAlexander Usyskin if (ret && ret != -EAGAIN) 40677537ad2SAlexander Usyskin schedule_work(&dev->reset_work); 40777537ad2SAlexander Usyskin 408180ea05bSTomas Winkler return ret; 409180ea05bSTomas Winkler } 410180ea05bSTomas Winkler 411180ea05bSTomas Winkler static int mei_me_pm_runtime_resume(struct device *device) 412180ea05bSTomas Winkler { 413180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 414180ea05bSTomas Winkler struct mei_device *dev; 415180ea05bSTomas Winkler int ret; 416180ea05bSTomas Winkler 417180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime resume\n"); 418180ea05bSTomas Winkler 419180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 420180ea05bSTomas Winkler if (!dev) 421180ea05bSTomas Winkler return -ENODEV; 422180ea05bSTomas Winkler 423180ea05bSTomas Winkler mutex_lock(&dev->device_lock); 424180ea05bSTomas Winkler 4252d1995fcSAlexander Usyskin ret = mei_me_pg_exit_sync(dev); 426180ea05bSTomas Winkler 427180ea05bSTomas Winkler mutex_unlock(&dev->device_lock); 428180ea05bSTomas Winkler 429180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime resume ret = %d\n", ret); 430180ea05bSTomas Winkler 43177537ad2SAlexander Usyskin if (ret) 43277537ad2SAlexander Usyskin schedule_work(&dev->reset_work); 43377537ad2SAlexander Usyskin 434180ea05bSTomas Winkler return ret; 435180ea05bSTomas Winkler } 436e13fa90cSTomas Winkler 437e13fa90cSTomas Winkler /** 4387efceb55SGeert Uytterhoeven * mei_me_set_pm_domain - fill and set pm domain structure for device 439e13fa90cSTomas Winkler * 440e13fa90cSTomas Winkler * @dev: mei_device 441e13fa90cSTomas Winkler */ 442e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev) 443e13fa90cSTomas Winkler { 444d08b8fc0STomas Winkler struct pci_dev *pdev = to_pci_dev(dev->dev); 445e13fa90cSTomas Winkler 446e13fa90cSTomas Winkler if (pdev->dev.bus && pdev->dev.bus->pm) { 447e13fa90cSTomas Winkler dev->pg_domain.ops = *pdev->dev.bus->pm; 448e13fa90cSTomas Winkler 449e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_suspend = mei_me_pm_runtime_suspend; 450e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_resume = mei_me_pm_runtime_resume; 451e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_idle = mei_me_pm_runtime_idle; 452e13fa90cSTomas Winkler 453989561deSTomeu Vizoso dev_pm_domain_set(&pdev->dev, &dev->pg_domain); 454e13fa90cSTomas Winkler } 455e13fa90cSTomas Winkler } 456e13fa90cSTomas Winkler 457e13fa90cSTomas Winkler /** 4587efceb55SGeert Uytterhoeven * mei_me_unset_pm_domain - clean pm domain structure for device 459e13fa90cSTomas Winkler * 460e13fa90cSTomas Winkler * @dev: mei_device 461e13fa90cSTomas Winkler */ 462e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev) 463e13fa90cSTomas Winkler { 464e13fa90cSTomas Winkler /* stop using pm callbacks if any */ 465989561deSTomeu Vizoso dev_pm_domain_set(dev->dev, NULL); 466e13fa90cSTomas Winkler } 467180ea05bSTomas Winkler 468180ea05bSTomas Winkler static const struct dev_pm_ops mei_me_pm_ops = { 469180ea05bSTomas Winkler SET_SYSTEM_SLEEP_PM_OPS(mei_me_pci_suspend, 470180ea05bSTomas Winkler mei_me_pci_resume) 471180ea05bSTomas Winkler SET_RUNTIME_PM_OPS( 472180ea05bSTomas Winkler mei_me_pm_runtime_suspend, 473180ea05bSTomas Winkler mei_me_pm_runtime_resume, 474180ea05bSTomas Winkler mei_me_pm_runtime_idle) 475180ea05bSTomas Winkler }; 476180ea05bSTomas Winkler 477b68301e9STomas Winkler #define MEI_ME_PM_OPS (&mei_me_pm_ops) 4782703d4b2STomas Winkler #else 479b68301e9STomas Winkler #define MEI_ME_PM_OPS NULL 480180ea05bSTomas Winkler #endif /* CONFIG_PM */ 4812703d4b2STomas Winkler /* 4822703d4b2STomas Winkler * PCI driver structure 4832703d4b2STomas Winkler */ 484b68301e9STomas Winkler static struct pci_driver mei_me_driver = { 4852703d4b2STomas Winkler .name = KBUILD_MODNAME, 486b68301e9STomas Winkler .id_table = mei_me_pci_tbl, 487b68301e9STomas Winkler .probe = mei_me_probe, 488b68301e9STomas Winkler .remove = mei_me_remove, 489b68301e9STomas Winkler .shutdown = mei_me_remove, 490b68301e9STomas Winkler .driver.pm = MEI_ME_PM_OPS, 4912703d4b2STomas Winkler }; 4922703d4b2STomas Winkler 493b68301e9STomas Winkler module_pci_driver(mei_me_driver); 4942703d4b2STomas Winkler 4952703d4b2STomas Winkler MODULE_AUTHOR("Intel Corporation"); 4962703d4b2STomas Winkler MODULE_DESCRIPTION("Intel(R) Management Engine Interface"); 4972703d4b2STomas Winkler MODULE_LICENSE("GPL v2"); 498