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 912703d4b2STomas Winkler /* required last entry */ 922703d4b2STomas Winkler {0, } 932703d4b2STomas Winkler }; 942703d4b2STomas Winkler 95b68301e9STomas Winkler MODULE_DEVICE_TABLE(pci, mei_me_pci_tbl); 962703d4b2STomas Winkler 97bbd6d050SRafael J. Wysocki #ifdef CONFIG_PM 98e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev); 99e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev); 100e13fa90cSTomas Winkler #else 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) {} 103bbd6d050SRafael J. Wysocki #endif /* CONFIG_PM */ 104e13fa90cSTomas Winkler 1052703d4b2STomas Winkler /** 106ce23139cSAlexander Usyskin * mei_me_quirk_probe - probe for devices that doesn't valid ME interface 107393b148fSMasanari Iida * 1082703d4b2STomas Winkler * @pdev: PCI device structure 109c919951dSTomas Winkler * @cfg: per generation config 1102703d4b2STomas Winkler * 111a8605ea2SAlexander Usyskin * Return: true if ME Interface is valid, false otherwise 1122703d4b2STomas Winkler */ 113b68301e9STomas Winkler static bool mei_me_quirk_probe(struct pci_dev *pdev, 114c919951dSTomas Winkler const struct mei_cfg *cfg) 1152703d4b2STomas Winkler { 116c919951dSTomas Winkler if (cfg->quirk_probe && cfg->quirk_probe(pdev)) { 1172703d4b2STomas Winkler dev_info(&pdev->dev, "Device doesn't have valid ME Interface\n"); 1182703d4b2STomas Winkler return false; 1192703d4b2STomas Winkler } 120c919951dSTomas Winkler 121c919951dSTomas Winkler return true; 122c919951dSTomas Winkler } 123c919951dSTomas Winkler 1242703d4b2STomas Winkler /** 125ce23139cSAlexander Usyskin * mei_me_probe - Device Initialization Routine 1262703d4b2STomas Winkler * 1272703d4b2STomas Winkler * @pdev: PCI device structure 1282703d4b2STomas Winkler * @ent: entry in kcs_pci_tbl 1292703d4b2STomas Winkler * 130a8605ea2SAlexander Usyskin * Return: 0 on success, <0 on failure. 1312703d4b2STomas Winkler */ 132b68301e9STomas Winkler static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 1332703d4b2STomas Winkler { 1348d929d48SAlexander Usyskin const struct mei_cfg *cfg = (struct mei_cfg *)(ent->driver_data); 1352703d4b2STomas Winkler struct mei_device *dev; 13652c34561STomas Winkler struct mei_me_hw *hw; 1371fa55b4eSAlexander Usyskin unsigned int irqflags; 1382703d4b2STomas Winkler int err; 1392703d4b2STomas Winkler 1402703d4b2STomas Winkler 141c919951dSTomas Winkler if (!mei_me_quirk_probe(pdev, cfg)) 142c919951dSTomas Winkler return -ENODEV; 1432703d4b2STomas Winkler 1442703d4b2STomas Winkler /* enable pci dev */ 1452703d4b2STomas Winkler err = pci_enable_device(pdev); 1462703d4b2STomas Winkler if (err) { 1472703d4b2STomas Winkler dev_err(&pdev->dev, "failed to enable pci device.\n"); 1482703d4b2STomas Winkler goto end; 1492703d4b2STomas Winkler } 1502703d4b2STomas Winkler /* set PCI host mastering */ 1512703d4b2STomas Winkler pci_set_master(pdev); 1522703d4b2STomas Winkler /* pci request regions for mei driver */ 1532703d4b2STomas Winkler err = pci_request_regions(pdev, KBUILD_MODNAME); 1542703d4b2STomas Winkler if (err) { 1552703d4b2STomas Winkler dev_err(&pdev->dev, "failed to get pci regions.\n"); 1562703d4b2STomas Winkler goto disable_device; 1572703d4b2STomas Winkler } 1583ecfb168STomas Winkler 1593ecfb168STomas Winkler if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) || 1603ecfb168STomas Winkler dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) { 1613ecfb168STomas Winkler 1623ecfb168STomas Winkler err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); 1633ecfb168STomas Winkler if (err) 1643ecfb168STomas Winkler err = dma_set_coherent_mask(&pdev->dev, 1653ecfb168STomas Winkler DMA_BIT_MASK(32)); 1663ecfb168STomas Winkler } 1673ecfb168STomas Winkler if (err) { 1683ecfb168STomas Winkler dev_err(&pdev->dev, "No usable DMA configuration, aborting\n"); 1693ecfb168STomas Winkler goto release_regions; 1703ecfb168STomas Winkler } 1713ecfb168STomas Winkler 1723ecfb168STomas Winkler 1732703d4b2STomas Winkler /* allocates and initializes the mei dev structure */ 1748d929d48SAlexander Usyskin dev = mei_me_dev_init(pdev, cfg); 1752703d4b2STomas Winkler if (!dev) { 1762703d4b2STomas Winkler err = -ENOMEM; 1772703d4b2STomas Winkler goto release_regions; 1782703d4b2STomas Winkler } 17952c34561STomas Winkler hw = to_me_hw(dev); 1802703d4b2STomas Winkler /* mapping IO device memory */ 18152c34561STomas Winkler hw->mem_addr = pci_iomap(pdev, 0, 0); 18252c34561STomas Winkler if (!hw->mem_addr) { 1832703d4b2STomas Winkler dev_err(&pdev->dev, "mapping I/O device memory failure.\n"); 1842703d4b2STomas Winkler err = -ENOMEM; 1852703d4b2STomas Winkler goto free_device; 1862703d4b2STomas Winkler } 1872703d4b2STomas Winkler pci_enable_msi(pdev); 1882703d4b2STomas Winkler 1892703d4b2STomas Winkler /* request and enable interrupt */ 1901fa55b4eSAlexander Usyskin irqflags = pci_dev_msi_enabled(pdev) ? IRQF_ONESHOT : IRQF_SHARED; 1911fa55b4eSAlexander Usyskin 1922703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 19306ecd645STomas Winkler mei_me_irq_quick_handler, 19406ecd645STomas Winkler mei_me_irq_thread_handler, 1951fa55b4eSAlexander Usyskin irqflags, KBUILD_MODNAME, dev); 1962703d4b2STomas Winkler if (err) { 1972703d4b2STomas Winkler dev_err(&pdev->dev, "request_threaded_irq failure. irq = %d\n", 1982703d4b2STomas Winkler pdev->irq); 1992703d4b2STomas Winkler goto disable_msi; 2002703d4b2STomas Winkler } 2012703d4b2STomas Winkler 202c4d589beSTomas Winkler if (mei_start(dev)) { 2032703d4b2STomas Winkler dev_err(&pdev->dev, "init hw failure.\n"); 2042703d4b2STomas Winkler err = -ENODEV; 2052703d4b2STomas Winkler goto release_irq; 2062703d4b2STomas Winkler } 2072703d4b2STomas Winkler 208180ea05bSTomas Winkler pm_runtime_set_autosuspend_delay(&pdev->dev, MEI_ME_RPM_TIMEOUT); 209180ea05bSTomas Winkler pm_runtime_use_autosuspend(&pdev->dev); 210180ea05bSTomas Winkler 211f3d8e878SAlexander Usyskin err = mei_register(dev, &pdev->dev); 2122703d4b2STomas Winkler if (err) 2132703d4b2STomas Winkler goto release_irq; 2142703d4b2STomas Winkler 2152703d4b2STomas Winkler pci_set_drvdata(pdev, dev); 2162703d4b2STomas Winkler 2172703d4b2STomas Winkler schedule_delayed_work(&dev->timer_work, HZ); 2182703d4b2STomas Winkler 219e13fa90cSTomas Winkler /* 220e13fa90cSTomas Winkler * For not wake-able HW runtime pm framework 221e13fa90cSTomas Winkler * can't be used on pci device level. 222e13fa90cSTomas Winkler * Use domain runtime pm callbacks instead. 223e13fa90cSTomas Winkler */ 224e13fa90cSTomas Winkler if (!pci_dev_run_wake(pdev)) 225e13fa90cSTomas Winkler mei_me_set_pm_domain(dev); 226e13fa90cSTomas Winkler 227180ea05bSTomas Winkler if (mei_pg_is_enabled(dev)) 228180ea05bSTomas Winkler pm_runtime_put_noidle(&pdev->dev); 229180ea05bSTomas Winkler 230c4e87b52SAlexander Usyskin dev_dbg(&pdev->dev, "initialization successful.\n"); 2312703d4b2STomas Winkler 2322703d4b2STomas Winkler return 0; 2332703d4b2STomas Winkler 2342703d4b2STomas Winkler release_irq: 235dc844b0dSTomas Winkler mei_cancel_work(dev); 2362703d4b2STomas Winkler mei_disable_interrupts(dev); 2372703d4b2STomas Winkler free_irq(pdev->irq, dev); 2382703d4b2STomas Winkler disable_msi: 2392703d4b2STomas Winkler pci_disable_msi(pdev); 24052c34561STomas Winkler pci_iounmap(pdev, hw->mem_addr); 2412703d4b2STomas Winkler free_device: 2422703d4b2STomas Winkler kfree(dev); 2432703d4b2STomas Winkler release_regions: 2442703d4b2STomas Winkler pci_release_regions(pdev); 2452703d4b2STomas Winkler disable_device: 2462703d4b2STomas Winkler pci_disable_device(pdev); 2472703d4b2STomas Winkler end: 2482703d4b2STomas Winkler dev_err(&pdev->dev, "initialization failed.\n"); 2492703d4b2STomas Winkler return err; 2502703d4b2STomas Winkler } 2512703d4b2STomas Winkler 2522703d4b2STomas Winkler /** 253ce23139cSAlexander Usyskin * mei_me_remove - Device Removal Routine 2542703d4b2STomas Winkler * 2552703d4b2STomas Winkler * @pdev: PCI device structure 2562703d4b2STomas Winkler * 2572703d4b2STomas Winkler * mei_remove is called by the PCI subsystem to alert the driver 2582703d4b2STomas Winkler * that it should release a PCI device. 2592703d4b2STomas Winkler */ 260b68301e9STomas Winkler static void mei_me_remove(struct pci_dev *pdev) 2612703d4b2STomas Winkler { 2622703d4b2STomas Winkler struct mei_device *dev; 26352c34561STomas Winkler struct mei_me_hw *hw; 2642703d4b2STomas Winkler 2652703d4b2STomas Winkler dev = pci_get_drvdata(pdev); 2662703d4b2STomas Winkler if (!dev) 2672703d4b2STomas Winkler return; 2682703d4b2STomas Winkler 269180ea05bSTomas Winkler if (mei_pg_is_enabled(dev)) 270180ea05bSTomas Winkler pm_runtime_get_noresume(&pdev->dev); 271180ea05bSTomas Winkler 27252c34561STomas Winkler hw = to_me_hw(dev); 27352c34561STomas Winkler 2742703d4b2STomas Winkler 275ed6f7ac1SPaul Bolle dev_dbg(&pdev->dev, "stop\n"); 2767cb035d9STomas Winkler mei_stop(dev); 2772703d4b2STomas Winkler 278e13fa90cSTomas Winkler if (!pci_dev_run_wake(pdev)) 279e13fa90cSTomas Winkler mei_me_unset_pm_domain(dev); 280e13fa90cSTomas Winkler 2812703d4b2STomas Winkler /* disable interrupts */ 2822703d4b2STomas Winkler mei_disable_interrupts(dev); 2832703d4b2STomas Winkler 2842703d4b2STomas Winkler free_irq(pdev->irq, dev); 2852703d4b2STomas Winkler pci_disable_msi(pdev); 2862703d4b2STomas Winkler 28752c34561STomas Winkler if (hw->mem_addr) 28852c34561STomas Winkler pci_iounmap(pdev, hw->mem_addr); 2892703d4b2STomas Winkler 29030e53bb8STomas Winkler mei_deregister(dev); 29130e53bb8STomas Winkler 2922703d4b2STomas Winkler kfree(dev); 2932703d4b2STomas Winkler 2942703d4b2STomas Winkler pci_release_regions(pdev); 2952703d4b2STomas Winkler pci_disable_device(pdev); 2962703d4b2STomas Winkler 2972703d4b2STomas Winkler 2982703d4b2STomas Winkler } 29916833257SAlexander Usyskin #ifdef CONFIG_PM_SLEEP 300b68301e9STomas Winkler static int mei_me_pci_suspend(struct device *device) 3012703d4b2STomas Winkler { 3022703d4b2STomas Winkler struct pci_dev *pdev = to_pci_dev(device); 3032703d4b2STomas Winkler struct mei_device *dev = pci_get_drvdata(pdev); 3042703d4b2STomas Winkler 3052703d4b2STomas Winkler if (!dev) 3062703d4b2STomas Winkler return -ENODEV; 3072703d4b2STomas Winkler 308ed6f7ac1SPaul Bolle dev_dbg(&pdev->dev, "suspend\n"); 3092703d4b2STomas Winkler 3107cb035d9STomas Winkler mei_stop(dev); 3117cb035d9STomas Winkler 3127cb035d9STomas Winkler mei_disable_interrupts(dev); 3132703d4b2STomas Winkler 3142703d4b2STomas Winkler free_irq(pdev->irq, dev); 3152703d4b2STomas Winkler pci_disable_msi(pdev); 3162703d4b2STomas Winkler 3177cb035d9STomas Winkler return 0; 3182703d4b2STomas Winkler } 3192703d4b2STomas Winkler 320b68301e9STomas Winkler static int mei_me_pci_resume(struct device *device) 3212703d4b2STomas Winkler { 3222703d4b2STomas Winkler struct pci_dev *pdev = to_pci_dev(device); 3232703d4b2STomas Winkler struct mei_device *dev; 3241fa55b4eSAlexander Usyskin unsigned int irqflags; 3252703d4b2STomas Winkler int err; 3262703d4b2STomas Winkler 3272703d4b2STomas Winkler dev = pci_get_drvdata(pdev); 3282703d4b2STomas Winkler if (!dev) 3292703d4b2STomas Winkler return -ENODEV; 3302703d4b2STomas Winkler 3312703d4b2STomas Winkler pci_enable_msi(pdev); 3322703d4b2STomas Winkler 3331fa55b4eSAlexander Usyskin irqflags = pci_dev_msi_enabled(pdev) ? IRQF_ONESHOT : IRQF_SHARED; 3341fa55b4eSAlexander Usyskin 3352703d4b2STomas Winkler /* request and enable interrupt */ 3362703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 33706ecd645STomas Winkler mei_me_irq_quick_handler, 33806ecd645STomas Winkler mei_me_irq_thread_handler, 3391fa55b4eSAlexander Usyskin irqflags, KBUILD_MODNAME, dev); 3402703d4b2STomas Winkler 3412703d4b2STomas Winkler if (err) { 3422703d4b2STomas Winkler dev_err(&pdev->dev, "request_threaded_irq failed: irq = %d.\n", 3432703d4b2STomas Winkler pdev->irq); 3442703d4b2STomas Winkler return err; 3452703d4b2STomas Winkler } 3462703d4b2STomas Winkler 34733ec0826STomas Winkler err = mei_restart(dev); 34833ec0826STomas Winkler if (err) 34933ec0826STomas Winkler return err; 3502703d4b2STomas Winkler 3512703d4b2STomas Winkler /* Start timer if stopped in suspend */ 3522703d4b2STomas Winkler schedule_delayed_work(&dev->timer_work, HZ); 3532703d4b2STomas Winkler 35433ec0826STomas Winkler return 0; 3552703d4b2STomas Winkler } 356180ea05bSTomas Winkler #endif /* CONFIG_PM_SLEEP */ 35716833257SAlexander Usyskin 358bbd6d050SRafael J. Wysocki #ifdef CONFIG_PM 359180ea05bSTomas Winkler static int mei_me_pm_runtime_idle(struct device *device) 360180ea05bSTomas Winkler { 361180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 362180ea05bSTomas Winkler struct mei_device *dev; 363180ea05bSTomas Winkler 364180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime_idle\n"); 365180ea05bSTomas Winkler 366180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 367180ea05bSTomas Winkler if (!dev) 368180ea05bSTomas Winkler return -ENODEV; 369180ea05bSTomas Winkler if (mei_write_is_idle(dev)) 370d5d83f8aSAlexander Usyskin pm_runtime_autosuspend(device); 371180ea05bSTomas Winkler 372180ea05bSTomas Winkler return -EBUSY; 373180ea05bSTomas Winkler } 374180ea05bSTomas Winkler 375180ea05bSTomas Winkler static int mei_me_pm_runtime_suspend(struct device *device) 376180ea05bSTomas Winkler { 377180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 378180ea05bSTomas Winkler struct mei_device *dev; 379180ea05bSTomas Winkler int ret; 380180ea05bSTomas Winkler 381180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime suspend\n"); 382180ea05bSTomas Winkler 383180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 384180ea05bSTomas Winkler if (!dev) 385180ea05bSTomas Winkler return -ENODEV; 386180ea05bSTomas Winkler 387180ea05bSTomas Winkler mutex_lock(&dev->device_lock); 388180ea05bSTomas Winkler 389180ea05bSTomas Winkler if (mei_write_is_idle(dev)) 3902d1995fcSAlexander Usyskin ret = mei_me_pg_enter_sync(dev); 391180ea05bSTomas Winkler else 392180ea05bSTomas Winkler ret = -EAGAIN; 393180ea05bSTomas Winkler 394180ea05bSTomas Winkler mutex_unlock(&dev->device_lock); 395180ea05bSTomas Winkler 396180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime suspend ret=%d\n", ret); 397180ea05bSTomas Winkler 398180ea05bSTomas Winkler return ret; 399180ea05bSTomas Winkler } 400180ea05bSTomas Winkler 401180ea05bSTomas Winkler static int mei_me_pm_runtime_resume(struct device *device) 402180ea05bSTomas Winkler { 403180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 404180ea05bSTomas Winkler struct mei_device *dev; 405180ea05bSTomas Winkler int ret; 406180ea05bSTomas Winkler 407180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime resume\n"); 408180ea05bSTomas Winkler 409180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 410180ea05bSTomas Winkler if (!dev) 411180ea05bSTomas Winkler return -ENODEV; 412180ea05bSTomas Winkler 413180ea05bSTomas Winkler mutex_lock(&dev->device_lock); 414180ea05bSTomas Winkler 4152d1995fcSAlexander Usyskin ret = mei_me_pg_exit_sync(dev); 416180ea05bSTomas Winkler 417180ea05bSTomas Winkler mutex_unlock(&dev->device_lock); 418180ea05bSTomas Winkler 419180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime resume ret = %d\n", ret); 420180ea05bSTomas Winkler 421180ea05bSTomas Winkler return ret; 422180ea05bSTomas Winkler } 423e13fa90cSTomas Winkler 424e13fa90cSTomas Winkler /** 4257efceb55SGeert Uytterhoeven * mei_me_set_pm_domain - fill and set pm domain structure for device 426e13fa90cSTomas Winkler * 427e13fa90cSTomas Winkler * @dev: mei_device 428e13fa90cSTomas Winkler */ 429e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev) 430e13fa90cSTomas Winkler { 431d08b8fc0STomas Winkler struct pci_dev *pdev = to_pci_dev(dev->dev); 432e13fa90cSTomas Winkler 433e13fa90cSTomas Winkler if (pdev->dev.bus && pdev->dev.bus->pm) { 434e13fa90cSTomas Winkler dev->pg_domain.ops = *pdev->dev.bus->pm; 435e13fa90cSTomas Winkler 436e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_suspend = mei_me_pm_runtime_suspend; 437e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_resume = mei_me_pm_runtime_resume; 438e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_idle = mei_me_pm_runtime_idle; 439e13fa90cSTomas Winkler 440989561deSTomeu Vizoso dev_pm_domain_set(&pdev->dev, &dev->pg_domain); 441e13fa90cSTomas Winkler } 442e13fa90cSTomas Winkler } 443e13fa90cSTomas Winkler 444e13fa90cSTomas Winkler /** 4457efceb55SGeert Uytterhoeven * mei_me_unset_pm_domain - clean pm domain structure for device 446e13fa90cSTomas Winkler * 447e13fa90cSTomas Winkler * @dev: mei_device 448e13fa90cSTomas Winkler */ 449e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev) 450e13fa90cSTomas Winkler { 451e13fa90cSTomas Winkler /* stop using pm callbacks if any */ 452989561deSTomeu Vizoso dev_pm_domain_set(dev->dev, NULL); 453e13fa90cSTomas Winkler } 454180ea05bSTomas Winkler 455180ea05bSTomas Winkler static const struct dev_pm_ops mei_me_pm_ops = { 456180ea05bSTomas Winkler SET_SYSTEM_SLEEP_PM_OPS(mei_me_pci_suspend, 457180ea05bSTomas Winkler mei_me_pci_resume) 458180ea05bSTomas Winkler SET_RUNTIME_PM_OPS( 459180ea05bSTomas Winkler mei_me_pm_runtime_suspend, 460180ea05bSTomas Winkler mei_me_pm_runtime_resume, 461180ea05bSTomas Winkler mei_me_pm_runtime_idle) 462180ea05bSTomas Winkler }; 463180ea05bSTomas Winkler 464b68301e9STomas Winkler #define MEI_ME_PM_OPS (&mei_me_pm_ops) 4652703d4b2STomas Winkler #else 466b68301e9STomas Winkler #define MEI_ME_PM_OPS NULL 467180ea05bSTomas Winkler #endif /* CONFIG_PM */ 4682703d4b2STomas Winkler /* 4692703d4b2STomas Winkler * PCI driver structure 4702703d4b2STomas Winkler */ 471b68301e9STomas Winkler static struct pci_driver mei_me_driver = { 4722703d4b2STomas Winkler .name = KBUILD_MODNAME, 473b68301e9STomas Winkler .id_table = mei_me_pci_tbl, 474b68301e9STomas Winkler .probe = mei_me_probe, 475b68301e9STomas Winkler .remove = mei_me_remove, 476b68301e9STomas Winkler .shutdown = mei_me_remove, 477b68301e9STomas Winkler .driver.pm = MEI_ME_PM_OPS, 4782703d4b2STomas Winkler }; 4792703d4b2STomas Winkler 480b68301e9STomas Winkler module_pci_driver(mei_me_driver); 4812703d4b2STomas Winkler 4822703d4b2STomas Winkler MODULE_AUTHOR("Intel Corporation"); 4832703d4b2STomas Winkler MODULE_DESCRIPTION("Intel(R) Management Engine Interface"); 4842703d4b2STomas Winkler MODULE_LICENSE("GPL v2"); 485