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)}, 881625c7ecSTomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_H, mei_me_pch8_cfg)}, 891625c7ecSTomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_H_2, mei_me_pch8_cfg)}, 901625c7ecSTomas Winkler 91dd16f6cdSTomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_BXT_M, mei_me_pch8_cfg)}, 92dd16f6cdSTomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_APL_I, mei_me_pch8_cfg)}, 93dd16f6cdSTomas Winkler 942703d4b2STomas Winkler /* required last entry */ 952703d4b2STomas Winkler {0, } 962703d4b2STomas Winkler }; 972703d4b2STomas Winkler 98b68301e9STomas Winkler MODULE_DEVICE_TABLE(pci, mei_me_pci_tbl); 992703d4b2STomas Winkler 100bbd6d050SRafael J. Wysocki #ifdef CONFIG_PM 101e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev); 102e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev); 103e13fa90cSTomas Winkler #else 104e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev) {} 105e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev) {} 106bbd6d050SRafael J. Wysocki #endif /* CONFIG_PM */ 107e13fa90cSTomas Winkler 1082703d4b2STomas Winkler /** 109ce23139cSAlexander Usyskin * mei_me_quirk_probe - probe for devices that doesn't valid ME interface 110393b148fSMasanari Iida * 1112703d4b2STomas Winkler * @pdev: PCI device structure 112c919951dSTomas Winkler * @cfg: per generation config 1132703d4b2STomas Winkler * 114a8605ea2SAlexander Usyskin * Return: true if ME Interface is valid, false otherwise 1152703d4b2STomas Winkler */ 116b68301e9STomas Winkler static bool mei_me_quirk_probe(struct pci_dev *pdev, 117c919951dSTomas Winkler const struct mei_cfg *cfg) 1182703d4b2STomas Winkler { 119c919951dSTomas Winkler if (cfg->quirk_probe && cfg->quirk_probe(pdev)) { 1202703d4b2STomas Winkler dev_info(&pdev->dev, "Device doesn't have valid ME Interface\n"); 1212703d4b2STomas Winkler return false; 1222703d4b2STomas Winkler } 123c919951dSTomas Winkler 124c919951dSTomas Winkler return true; 125c919951dSTomas Winkler } 126c919951dSTomas Winkler 1272703d4b2STomas Winkler /** 128ce23139cSAlexander Usyskin * mei_me_probe - Device Initialization Routine 1292703d4b2STomas Winkler * 1302703d4b2STomas Winkler * @pdev: PCI device structure 1312703d4b2STomas Winkler * @ent: entry in kcs_pci_tbl 1322703d4b2STomas Winkler * 133a8605ea2SAlexander Usyskin * Return: 0 on success, <0 on failure. 1342703d4b2STomas Winkler */ 135b68301e9STomas Winkler static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 1362703d4b2STomas Winkler { 1378d929d48SAlexander Usyskin const struct mei_cfg *cfg = (struct mei_cfg *)(ent->driver_data); 1382703d4b2STomas Winkler struct mei_device *dev; 13952c34561STomas Winkler struct mei_me_hw *hw; 1401fa55b4eSAlexander Usyskin unsigned int irqflags; 1412703d4b2STomas Winkler int err; 1422703d4b2STomas Winkler 1432703d4b2STomas Winkler 144c919951dSTomas Winkler if (!mei_me_quirk_probe(pdev, cfg)) 145c919951dSTomas Winkler return -ENODEV; 1462703d4b2STomas Winkler 1472703d4b2STomas Winkler /* enable pci dev */ 1482703d4b2STomas Winkler err = pci_enable_device(pdev); 1492703d4b2STomas Winkler if (err) { 1502703d4b2STomas Winkler dev_err(&pdev->dev, "failed to enable pci device.\n"); 1512703d4b2STomas Winkler goto end; 1522703d4b2STomas Winkler } 1532703d4b2STomas Winkler /* set PCI host mastering */ 1542703d4b2STomas Winkler pci_set_master(pdev); 1552703d4b2STomas Winkler /* pci request regions for mei driver */ 1562703d4b2STomas Winkler err = pci_request_regions(pdev, KBUILD_MODNAME); 1572703d4b2STomas Winkler if (err) { 1582703d4b2STomas Winkler dev_err(&pdev->dev, "failed to get pci regions.\n"); 1592703d4b2STomas Winkler goto disable_device; 1602703d4b2STomas Winkler } 1613ecfb168STomas Winkler 1623ecfb168STomas Winkler if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) || 1633ecfb168STomas Winkler dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) { 1643ecfb168STomas Winkler 1653ecfb168STomas Winkler err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); 1663ecfb168STomas Winkler if (err) 1673ecfb168STomas Winkler err = dma_set_coherent_mask(&pdev->dev, 1683ecfb168STomas Winkler DMA_BIT_MASK(32)); 1693ecfb168STomas Winkler } 1703ecfb168STomas Winkler if (err) { 1713ecfb168STomas Winkler dev_err(&pdev->dev, "No usable DMA configuration, aborting\n"); 1723ecfb168STomas Winkler goto release_regions; 1733ecfb168STomas Winkler } 1743ecfb168STomas Winkler 1753ecfb168STomas Winkler 1762703d4b2STomas Winkler /* allocates and initializes the mei dev structure */ 1778d929d48SAlexander Usyskin dev = mei_me_dev_init(pdev, cfg); 1782703d4b2STomas Winkler if (!dev) { 1792703d4b2STomas Winkler err = -ENOMEM; 1802703d4b2STomas Winkler goto release_regions; 1812703d4b2STomas Winkler } 18252c34561STomas Winkler hw = to_me_hw(dev); 1832703d4b2STomas Winkler /* mapping IO device memory */ 18452c34561STomas Winkler hw->mem_addr = pci_iomap(pdev, 0, 0); 18552c34561STomas Winkler if (!hw->mem_addr) { 1862703d4b2STomas Winkler dev_err(&pdev->dev, "mapping I/O device memory failure.\n"); 1872703d4b2STomas Winkler err = -ENOMEM; 1882703d4b2STomas Winkler goto free_device; 1892703d4b2STomas Winkler } 1902703d4b2STomas Winkler pci_enable_msi(pdev); 1912703d4b2STomas Winkler 1922703d4b2STomas Winkler /* request and enable interrupt */ 1931fa55b4eSAlexander Usyskin irqflags = pci_dev_msi_enabled(pdev) ? IRQF_ONESHOT : IRQF_SHARED; 1941fa55b4eSAlexander Usyskin 1952703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 19606ecd645STomas Winkler mei_me_irq_quick_handler, 19706ecd645STomas Winkler mei_me_irq_thread_handler, 1981fa55b4eSAlexander Usyskin irqflags, KBUILD_MODNAME, dev); 1992703d4b2STomas Winkler if (err) { 2002703d4b2STomas Winkler dev_err(&pdev->dev, "request_threaded_irq failure. irq = %d\n", 2012703d4b2STomas Winkler pdev->irq); 2022703d4b2STomas Winkler goto disable_msi; 2032703d4b2STomas Winkler } 2042703d4b2STomas Winkler 205c4d589beSTomas Winkler if (mei_start(dev)) { 2062703d4b2STomas Winkler dev_err(&pdev->dev, "init hw failure.\n"); 2072703d4b2STomas Winkler err = -ENODEV; 2082703d4b2STomas Winkler goto release_irq; 2092703d4b2STomas Winkler } 2102703d4b2STomas Winkler 211180ea05bSTomas Winkler pm_runtime_set_autosuspend_delay(&pdev->dev, MEI_ME_RPM_TIMEOUT); 212180ea05bSTomas Winkler pm_runtime_use_autosuspend(&pdev->dev); 213180ea05bSTomas Winkler 214f3d8e878SAlexander Usyskin err = mei_register(dev, &pdev->dev); 2152703d4b2STomas Winkler if (err) 2161f7e489aSAlexander Usyskin goto stop; 2172703d4b2STomas Winkler 2182703d4b2STomas Winkler pci_set_drvdata(pdev, dev); 2192703d4b2STomas Winkler 2202703d4b2STomas Winkler schedule_delayed_work(&dev->timer_work, HZ); 2212703d4b2STomas Winkler 222e13fa90cSTomas Winkler /* 223e13fa90cSTomas Winkler * For not wake-able HW runtime pm framework 224e13fa90cSTomas Winkler * can't be used on pci device level. 225e13fa90cSTomas Winkler * Use domain runtime pm callbacks instead. 226e13fa90cSTomas Winkler */ 227e13fa90cSTomas Winkler if (!pci_dev_run_wake(pdev)) 228e13fa90cSTomas Winkler mei_me_set_pm_domain(dev); 229e13fa90cSTomas Winkler 230180ea05bSTomas Winkler if (mei_pg_is_enabled(dev)) 231180ea05bSTomas Winkler pm_runtime_put_noidle(&pdev->dev); 232180ea05bSTomas Winkler 233c4e87b52SAlexander Usyskin dev_dbg(&pdev->dev, "initialization successful.\n"); 2342703d4b2STomas Winkler 2352703d4b2STomas Winkler return 0; 2362703d4b2STomas Winkler 2371f7e489aSAlexander Usyskin stop: 2381f7e489aSAlexander Usyskin mei_stop(dev); 2392703d4b2STomas Winkler release_irq: 240dc844b0dSTomas Winkler mei_cancel_work(dev); 2412703d4b2STomas Winkler mei_disable_interrupts(dev); 2422703d4b2STomas Winkler free_irq(pdev->irq, dev); 2432703d4b2STomas Winkler disable_msi: 2442703d4b2STomas Winkler pci_disable_msi(pdev); 24552c34561STomas Winkler pci_iounmap(pdev, hw->mem_addr); 2462703d4b2STomas Winkler free_device: 2472703d4b2STomas Winkler kfree(dev); 2482703d4b2STomas Winkler release_regions: 2492703d4b2STomas Winkler pci_release_regions(pdev); 2502703d4b2STomas Winkler disable_device: 2512703d4b2STomas Winkler pci_disable_device(pdev); 2522703d4b2STomas Winkler end: 2532703d4b2STomas Winkler dev_err(&pdev->dev, "initialization failed.\n"); 2542703d4b2STomas Winkler return err; 2552703d4b2STomas Winkler } 2562703d4b2STomas Winkler 2572703d4b2STomas Winkler /** 258ce23139cSAlexander Usyskin * mei_me_remove - Device Removal Routine 2592703d4b2STomas Winkler * 2602703d4b2STomas Winkler * @pdev: PCI device structure 2612703d4b2STomas Winkler * 2622703d4b2STomas Winkler * mei_remove is called by the PCI subsystem to alert the driver 2632703d4b2STomas Winkler * that it should release a PCI device. 2642703d4b2STomas Winkler */ 265b68301e9STomas Winkler static void mei_me_remove(struct pci_dev *pdev) 2662703d4b2STomas Winkler { 2672703d4b2STomas Winkler struct mei_device *dev; 26852c34561STomas Winkler struct mei_me_hw *hw; 2692703d4b2STomas Winkler 2702703d4b2STomas Winkler dev = pci_get_drvdata(pdev); 2712703d4b2STomas Winkler if (!dev) 2722703d4b2STomas Winkler return; 2732703d4b2STomas Winkler 274180ea05bSTomas Winkler if (mei_pg_is_enabled(dev)) 275180ea05bSTomas Winkler pm_runtime_get_noresume(&pdev->dev); 276180ea05bSTomas Winkler 27752c34561STomas Winkler hw = to_me_hw(dev); 27852c34561STomas Winkler 2792703d4b2STomas Winkler 280ed6f7ac1SPaul Bolle dev_dbg(&pdev->dev, "stop\n"); 2817cb035d9STomas Winkler mei_stop(dev); 2822703d4b2STomas Winkler 283e13fa90cSTomas Winkler if (!pci_dev_run_wake(pdev)) 284e13fa90cSTomas Winkler mei_me_unset_pm_domain(dev); 285e13fa90cSTomas Winkler 2862703d4b2STomas Winkler /* disable interrupts */ 2872703d4b2STomas Winkler mei_disable_interrupts(dev); 2882703d4b2STomas Winkler 2892703d4b2STomas Winkler free_irq(pdev->irq, dev); 2902703d4b2STomas Winkler pci_disable_msi(pdev); 2912703d4b2STomas Winkler 29252c34561STomas Winkler if (hw->mem_addr) 29352c34561STomas Winkler pci_iounmap(pdev, hw->mem_addr); 2942703d4b2STomas Winkler 29530e53bb8STomas Winkler mei_deregister(dev); 29630e53bb8STomas Winkler 2972703d4b2STomas Winkler kfree(dev); 2982703d4b2STomas Winkler 2992703d4b2STomas Winkler pci_release_regions(pdev); 3002703d4b2STomas Winkler pci_disable_device(pdev); 3012703d4b2STomas Winkler 3022703d4b2STomas Winkler 3032703d4b2STomas Winkler } 30416833257SAlexander Usyskin #ifdef CONFIG_PM_SLEEP 305b68301e9STomas Winkler static int mei_me_pci_suspend(struct device *device) 3062703d4b2STomas Winkler { 3072703d4b2STomas Winkler struct pci_dev *pdev = to_pci_dev(device); 3082703d4b2STomas Winkler struct mei_device *dev = pci_get_drvdata(pdev); 3092703d4b2STomas Winkler 3102703d4b2STomas Winkler if (!dev) 3112703d4b2STomas Winkler return -ENODEV; 3122703d4b2STomas Winkler 313ed6f7ac1SPaul Bolle dev_dbg(&pdev->dev, "suspend\n"); 3142703d4b2STomas Winkler 3157cb035d9STomas Winkler mei_stop(dev); 3167cb035d9STomas Winkler 3177cb035d9STomas Winkler mei_disable_interrupts(dev); 3182703d4b2STomas Winkler 3192703d4b2STomas Winkler free_irq(pdev->irq, dev); 3202703d4b2STomas Winkler pci_disable_msi(pdev); 3212703d4b2STomas Winkler 3227cb035d9STomas Winkler return 0; 3232703d4b2STomas Winkler } 3242703d4b2STomas Winkler 325b68301e9STomas Winkler static int mei_me_pci_resume(struct device *device) 3262703d4b2STomas Winkler { 3272703d4b2STomas Winkler struct pci_dev *pdev = to_pci_dev(device); 3282703d4b2STomas Winkler struct mei_device *dev; 3291fa55b4eSAlexander Usyskin unsigned int irqflags; 3302703d4b2STomas Winkler int err; 3312703d4b2STomas Winkler 3322703d4b2STomas Winkler dev = pci_get_drvdata(pdev); 3332703d4b2STomas Winkler if (!dev) 3342703d4b2STomas Winkler return -ENODEV; 3352703d4b2STomas Winkler 3362703d4b2STomas Winkler pci_enable_msi(pdev); 3372703d4b2STomas Winkler 3381fa55b4eSAlexander Usyskin irqflags = pci_dev_msi_enabled(pdev) ? IRQF_ONESHOT : IRQF_SHARED; 3391fa55b4eSAlexander Usyskin 3402703d4b2STomas Winkler /* request and enable interrupt */ 3412703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 34206ecd645STomas Winkler mei_me_irq_quick_handler, 34306ecd645STomas Winkler mei_me_irq_thread_handler, 3441fa55b4eSAlexander Usyskin irqflags, KBUILD_MODNAME, dev); 3452703d4b2STomas Winkler 3462703d4b2STomas Winkler if (err) { 3472703d4b2STomas Winkler dev_err(&pdev->dev, "request_threaded_irq failed: irq = %d.\n", 3482703d4b2STomas Winkler pdev->irq); 3492703d4b2STomas Winkler return err; 3502703d4b2STomas Winkler } 3512703d4b2STomas Winkler 35233ec0826STomas Winkler err = mei_restart(dev); 35333ec0826STomas Winkler if (err) 35433ec0826STomas Winkler return err; 3552703d4b2STomas Winkler 3562703d4b2STomas Winkler /* Start timer if stopped in suspend */ 3572703d4b2STomas Winkler schedule_delayed_work(&dev->timer_work, HZ); 3582703d4b2STomas Winkler 35933ec0826STomas Winkler return 0; 3602703d4b2STomas Winkler } 361180ea05bSTomas Winkler #endif /* CONFIG_PM_SLEEP */ 36216833257SAlexander Usyskin 363bbd6d050SRafael J. Wysocki #ifdef CONFIG_PM 364180ea05bSTomas Winkler static int mei_me_pm_runtime_idle(struct device *device) 365180ea05bSTomas Winkler { 366180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 367180ea05bSTomas Winkler struct mei_device *dev; 368180ea05bSTomas Winkler 369180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime_idle\n"); 370180ea05bSTomas Winkler 371180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 372180ea05bSTomas Winkler if (!dev) 373180ea05bSTomas Winkler return -ENODEV; 374180ea05bSTomas Winkler if (mei_write_is_idle(dev)) 375d5d83f8aSAlexander Usyskin pm_runtime_autosuspend(device); 376180ea05bSTomas Winkler 377180ea05bSTomas Winkler return -EBUSY; 378180ea05bSTomas Winkler } 379180ea05bSTomas Winkler 380180ea05bSTomas Winkler static int mei_me_pm_runtime_suspend(struct device *device) 381180ea05bSTomas Winkler { 382180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 383180ea05bSTomas Winkler struct mei_device *dev; 384180ea05bSTomas Winkler int ret; 385180ea05bSTomas Winkler 386180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime suspend\n"); 387180ea05bSTomas Winkler 388180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 389180ea05bSTomas Winkler if (!dev) 390180ea05bSTomas Winkler return -ENODEV; 391180ea05bSTomas Winkler 392180ea05bSTomas Winkler mutex_lock(&dev->device_lock); 393180ea05bSTomas Winkler 394180ea05bSTomas Winkler if (mei_write_is_idle(dev)) 3952d1995fcSAlexander Usyskin ret = mei_me_pg_enter_sync(dev); 396180ea05bSTomas Winkler else 397180ea05bSTomas Winkler ret = -EAGAIN; 398180ea05bSTomas Winkler 399180ea05bSTomas Winkler mutex_unlock(&dev->device_lock); 400180ea05bSTomas Winkler 401180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime suspend ret=%d\n", ret); 402180ea05bSTomas Winkler 403180ea05bSTomas Winkler return ret; 404180ea05bSTomas Winkler } 405180ea05bSTomas Winkler 406180ea05bSTomas Winkler static int mei_me_pm_runtime_resume(struct device *device) 407180ea05bSTomas Winkler { 408180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 409180ea05bSTomas Winkler struct mei_device *dev; 410180ea05bSTomas Winkler int ret; 411180ea05bSTomas Winkler 412180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime resume\n"); 413180ea05bSTomas Winkler 414180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 415180ea05bSTomas Winkler if (!dev) 416180ea05bSTomas Winkler return -ENODEV; 417180ea05bSTomas Winkler 418180ea05bSTomas Winkler mutex_lock(&dev->device_lock); 419180ea05bSTomas Winkler 4202d1995fcSAlexander Usyskin ret = mei_me_pg_exit_sync(dev); 421180ea05bSTomas Winkler 422180ea05bSTomas Winkler mutex_unlock(&dev->device_lock); 423180ea05bSTomas Winkler 424180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime resume ret = %d\n", ret); 425180ea05bSTomas Winkler 426180ea05bSTomas Winkler return ret; 427180ea05bSTomas Winkler } 428e13fa90cSTomas Winkler 429e13fa90cSTomas Winkler /** 4307efceb55SGeert Uytterhoeven * mei_me_set_pm_domain - fill and set pm domain structure for device 431e13fa90cSTomas Winkler * 432e13fa90cSTomas Winkler * @dev: mei_device 433e13fa90cSTomas Winkler */ 434e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev) 435e13fa90cSTomas Winkler { 436d08b8fc0STomas Winkler struct pci_dev *pdev = to_pci_dev(dev->dev); 437e13fa90cSTomas Winkler 438e13fa90cSTomas Winkler if (pdev->dev.bus && pdev->dev.bus->pm) { 439e13fa90cSTomas Winkler dev->pg_domain.ops = *pdev->dev.bus->pm; 440e13fa90cSTomas Winkler 441e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_suspend = mei_me_pm_runtime_suspend; 442e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_resume = mei_me_pm_runtime_resume; 443e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_idle = mei_me_pm_runtime_idle; 444e13fa90cSTomas Winkler 445989561deSTomeu Vizoso dev_pm_domain_set(&pdev->dev, &dev->pg_domain); 446e13fa90cSTomas Winkler } 447e13fa90cSTomas Winkler } 448e13fa90cSTomas Winkler 449e13fa90cSTomas Winkler /** 4507efceb55SGeert Uytterhoeven * mei_me_unset_pm_domain - clean pm domain structure for device 451e13fa90cSTomas Winkler * 452e13fa90cSTomas Winkler * @dev: mei_device 453e13fa90cSTomas Winkler */ 454e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev) 455e13fa90cSTomas Winkler { 456e13fa90cSTomas Winkler /* stop using pm callbacks if any */ 457989561deSTomeu Vizoso dev_pm_domain_set(dev->dev, NULL); 458e13fa90cSTomas Winkler } 459180ea05bSTomas Winkler 460180ea05bSTomas Winkler static const struct dev_pm_ops mei_me_pm_ops = { 461180ea05bSTomas Winkler SET_SYSTEM_SLEEP_PM_OPS(mei_me_pci_suspend, 462180ea05bSTomas Winkler mei_me_pci_resume) 463180ea05bSTomas Winkler SET_RUNTIME_PM_OPS( 464180ea05bSTomas Winkler mei_me_pm_runtime_suspend, 465180ea05bSTomas Winkler mei_me_pm_runtime_resume, 466180ea05bSTomas Winkler mei_me_pm_runtime_idle) 467180ea05bSTomas Winkler }; 468180ea05bSTomas Winkler 469b68301e9STomas Winkler #define MEI_ME_PM_OPS (&mei_me_pm_ops) 4702703d4b2STomas Winkler #else 471b68301e9STomas Winkler #define MEI_ME_PM_OPS NULL 472180ea05bSTomas Winkler #endif /* CONFIG_PM */ 4732703d4b2STomas Winkler /* 4742703d4b2STomas Winkler * PCI driver structure 4752703d4b2STomas Winkler */ 476b68301e9STomas Winkler static struct pci_driver mei_me_driver = { 4772703d4b2STomas Winkler .name = KBUILD_MODNAME, 478b68301e9STomas Winkler .id_table = mei_me_pci_tbl, 479b68301e9STomas Winkler .probe = mei_me_probe, 480b68301e9STomas Winkler .remove = mei_me_remove, 481b68301e9STomas Winkler .shutdown = mei_me_remove, 482b68301e9STomas Winkler .driver.pm = MEI_ME_PM_OPS, 4832703d4b2STomas Winkler }; 4842703d4b2STomas Winkler 485b68301e9STomas Winkler module_pci_driver(mei_me_driver); 4862703d4b2STomas Winkler 4872703d4b2STomas Winkler MODULE_AUTHOR("Intel Corporation"); 4882703d4b2STomas Winkler MODULE_DESCRIPTION("Intel(R) Management Engine Interface"); 4892703d4b2STomas Winkler MODULE_LICENSE("GPL v2"); 490