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 */ 152f8a09605STomas Winkler err = pcim_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); 159f8a09605STomas Winkler /* pci request regions and mapping IO device memory for mei driver */ 160f8a09605STomas Winkler err = pcim_iomap_regions(pdev, BIT(0), KBUILD_MODNAME); 1612703d4b2STomas Winkler if (err) { 1622703d4b2STomas Winkler dev_err(&pdev->dev, "failed to get pci regions.\n"); 163f8a09605STomas Winkler goto end; 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"); 176f8a09605STomas Winkler goto end; 1773ecfb168STomas Winkler } 1783ecfb168STomas Winkler 1792703d4b2STomas Winkler /* allocates and initializes the mei dev structure */ 1808d929d48SAlexander Usyskin dev = mei_me_dev_init(pdev, cfg); 1812703d4b2STomas Winkler if (!dev) { 1822703d4b2STomas Winkler err = -ENOMEM; 183f8a09605STomas Winkler goto end; 1842703d4b2STomas Winkler } 18552c34561STomas Winkler hw = to_me_hw(dev); 186f8a09605STomas Winkler hw->mem_addr = pcim_iomap_table(pdev)[0]; 187f8a09605STomas Winkler 1882703d4b2STomas Winkler pci_enable_msi(pdev); 1892703d4b2STomas Winkler 1902703d4b2STomas Winkler /* request and enable interrupt */ 1911fa55b4eSAlexander Usyskin irqflags = pci_dev_msi_enabled(pdev) ? IRQF_ONESHOT : IRQF_SHARED; 1921fa55b4eSAlexander Usyskin 1932703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 19406ecd645STomas Winkler mei_me_irq_quick_handler, 19506ecd645STomas Winkler mei_me_irq_thread_handler, 1961fa55b4eSAlexander Usyskin irqflags, KBUILD_MODNAME, dev); 1972703d4b2STomas Winkler if (err) { 1982703d4b2STomas Winkler dev_err(&pdev->dev, "request_threaded_irq failure. irq = %d\n", 1992703d4b2STomas Winkler pdev->irq); 200f8a09605STomas Winkler goto end; 2012703d4b2STomas Winkler } 2022703d4b2STomas Winkler 203c4d589beSTomas Winkler if (mei_start(dev)) { 2042703d4b2STomas Winkler dev_err(&pdev->dev, "init hw failure.\n"); 2052703d4b2STomas Winkler err = -ENODEV; 2062703d4b2STomas Winkler goto release_irq; 2072703d4b2STomas Winkler } 2082703d4b2STomas Winkler 209180ea05bSTomas Winkler pm_runtime_set_autosuspend_delay(&pdev->dev, MEI_ME_RPM_TIMEOUT); 210180ea05bSTomas Winkler pm_runtime_use_autosuspend(&pdev->dev); 211180ea05bSTomas Winkler 212f3d8e878SAlexander Usyskin err = mei_register(dev, &pdev->dev); 2132703d4b2STomas Winkler if (err) 2141f7e489aSAlexander Usyskin goto stop; 2152703d4b2STomas Winkler 2162703d4b2STomas Winkler pci_set_drvdata(pdev, dev); 2172703d4b2STomas Winkler 218e13fa90cSTomas Winkler /* 219557909e1SAlexander Usyskin * MEI requires to resume from runtime suspend mode 220557909e1SAlexander Usyskin * in order to perform link reset flow upon system suspend. 221557909e1SAlexander Usyskin */ 222557909e1SAlexander Usyskin pdev->dev_flags |= PCI_DEV_FLAGS_NEEDS_RESUME; 223557909e1SAlexander Usyskin 224557909e1SAlexander Usyskin /* 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 end: 2462703d4b2STomas Winkler dev_err(&pdev->dev, "initialization failed.\n"); 2472703d4b2STomas Winkler return err; 2482703d4b2STomas Winkler } 2492703d4b2STomas Winkler 2502703d4b2STomas Winkler /** 2515c4c0106STomas Winkler * mei_me_shutdown - Device Removal Routine 2525c4c0106STomas Winkler * 2535c4c0106STomas Winkler * @pdev: PCI device structure 2545c4c0106STomas Winkler * 2555c4c0106STomas Winkler * mei_me_shutdown is called from the reboot notifier 2565c4c0106STomas Winkler * it's a simplified version of remove so we go down 2575c4c0106STomas Winkler * faster. 2585c4c0106STomas Winkler */ 2595c4c0106STomas Winkler static void mei_me_shutdown(struct pci_dev *pdev) 2605c4c0106STomas Winkler { 2615c4c0106STomas Winkler struct mei_device *dev; 2625c4c0106STomas Winkler 2635c4c0106STomas Winkler dev = pci_get_drvdata(pdev); 2645c4c0106STomas Winkler if (!dev) 2655c4c0106STomas Winkler return; 2665c4c0106STomas Winkler 2675c4c0106STomas Winkler dev_dbg(&pdev->dev, "shutdown\n"); 2685c4c0106STomas Winkler mei_stop(dev); 2695c4c0106STomas Winkler 2705c4c0106STomas Winkler if (!pci_dev_run_wake(pdev)) 2715c4c0106STomas Winkler mei_me_unset_pm_domain(dev); 2725c4c0106STomas Winkler 2735c4c0106STomas Winkler mei_disable_interrupts(dev); 2745c4c0106STomas Winkler free_irq(pdev->irq, dev); 2755c4c0106STomas Winkler } 2765c4c0106STomas Winkler 2775c4c0106STomas Winkler /** 278ce23139cSAlexander Usyskin * mei_me_remove - Device Removal Routine 2792703d4b2STomas Winkler * 2802703d4b2STomas Winkler * @pdev: PCI device structure 2812703d4b2STomas Winkler * 2825c4c0106STomas Winkler * mei_me_remove is called by the PCI subsystem to alert the driver 2832703d4b2STomas Winkler * that it should release a PCI device. 2842703d4b2STomas Winkler */ 285b68301e9STomas Winkler static void mei_me_remove(struct pci_dev *pdev) 2862703d4b2STomas Winkler { 2872703d4b2STomas Winkler struct mei_device *dev; 2882703d4b2STomas Winkler 2892703d4b2STomas Winkler dev = pci_get_drvdata(pdev); 2902703d4b2STomas Winkler if (!dev) 2912703d4b2STomas Winkler return; 2922703d4b2STomas Winkler 293180ea05bSTomas Winkler if (mei_pg_is_enabled(dev)) 294180ea05bSTomas Winkler pm_runtime_get_noresume(&pdev->dev); 295180ea05bSTomas Winkler 296ed6f7ac1SPaul Bolle dev_dbg(&pdev->dev, "stop\n"); 2977cb035d9STomas Winkler mei_stop(dev); 2982703d4b2STomas Winkler 299e13fa90cSTomas Winkler if (!pci_dev_run_wake(pdev)) 300e13fa90cSTomas Winkler mei_me_unset_pm_domain(dev); 301e13fa90cSTomas Winkler 3022703d4b2STomas Winkler mei_disable_interrupts(dev); 3032703d4b2STomas Winkler 3042703d4b2STomas Winkler free_irq(pdev->irq, dev); 3052703d4b2STomas Winkler 30630e53bb8STomas Winkler mei_deregister(dev); 3072703d4b2STomas Winkler } 308f8a09605STomas Winkler 30916833257SAlexander Usyskin #ifdef CONFIG_PM_SLEEP 310b68301e9STomas Winkler static int mei_me_pci_suspend(struct device *device) 3112703d4b2STomas Winkler { 3122703d4b2STomas Winkler struct pci_dev *pdev = to_pci_dev(device); 3132703d4b2STomas Winkler struct mei_device *dev = pci_get_drvdata(pdev); 3142703d4b2STomas Winkler 3152703d4b2STomas Winkler if (!dev) 3162703d4b2STomas Winkler return -ENODEV; 3172703d4b2STomas Winkler 318ed6f7ac1SPaul Bolle dev_dbg(&pdev->dev, "suspend\n"); 3192703d4b2STomas Winkler 3207cb035d9STomas Winkler mei_stop(dev); 3217cb035d9STomas Winkler 3227cb035d9STomas Winkler mei_disable_interrupts(dev); 3232703d4b2STomas Winkler 3242703d4b2STomas Winkler free_irq(pdev->irq, dev); 3252703d4b2STomas Winkler pci_disable_msi(pdev); 3262703d4b2STomas Winkler 3277cb035d9STomas Winkler return 0; 3282703d4b2STomas Winkler } 3292703d4b2STomas Winkler 330b68301e9STomas Winkler static int mei_me_pci_resume(struct device *device) 3312703d4b2STomas Winkler { 3322703d4b2STomas Winkler struct pci_dev *pdev = to_pci_dev(device); 3332703d4b2STomas Winkler struct mei_device *dev; 3341fa55b4eSAlexander Usyskin unsigned int irqflags; 3352703d4b2STomas Winkler int err; 3362703d4b2STomas Winkler 3372703d4b2STomas Winkler dev = pci_get_drvdata(pdev); 3382703d4b2STomas Winkler if (!dev) 3392703d4b2STomas Winkler return -ENODEV; 3402703d4b2STomas Winkler 3412703d4b2STomas Winkler pci_enable_msi(pdev); 3422703d4b2STomas Winkler 3431fa55b4eSAlexander Usyskin irqflags = pci_dev_msi_enabled(pdev) ? IRQF_ONESHOT : IRQF_SHARED; 3441fa55b4eSAlexander Usyskin 3452703d4b2STomas Winkler /* request and enable interrupt */ 3462703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 34706ecd645STomas Winkler mei_me_irq_quick_handler, 34806ecd645STomas Winkler mei_me_irq_thread_handler, 3491fa55b4eSAlexander Usyskin irqflags, KBUILD_MODNAME, dev); 3502703d4b2STomas Winkler 3512703d4b2STomas Winkler if (err) { 3522703d4b2STomas Winkler dev_err(&pdev->dev, "request_threaded_irq failed: irq = %d.\n", 3532703d4b2STomas Winkler pdev->irq); 3542703d4b2STomas Winkler return err; 3552703d4b2STomas Winkler } 3562703d4b2STomas Winkler 35733ec0826STomas Winkler err = mei_restart(dev); 35833ec0826STomas Winkler if (err) 35933ec0826STomas Winkler return err; 3602703d4b2STomas Winkler 3612703d4b2STomas Winkler /* Start timer if stopped in suspend */ 3622703d4b2STomas Winkler schedule_delayed_work(&dev->timer_work, HZ); 3632703d4b2STomas Winkler 36433ec0826STomas Winkler return 0; 3652703d4b2STomas Winkler } 366180ea05bSTomas Winkler #endif /* CONFIG_PM_SLEEP */ 36716833257SAlexander Usyskin 368bbd6d050SRafael J. Wysocki #ifdef CONFIG_PM 369180ea05bSTomas Winkler static int mei_me_pm_runtime_idle(struct device *device) 370180ea05bSTomas Winkler { 371180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 372180ea05bSTomas Winkler struct mei_device *dev; 373180ea05bSTomas Winkler 374180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime_idle\n"); 375180ea05bSTomas Winkler 376180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 377180ea05bSTomas Winkler if (!dev) 378180ea05bSTomas Winkler return -ENODEV; 379180ea05bSTomas Winkler if (mei_write_is_idle(dev)) 380d5d83f8aSAlexander Usyskin pm_runtime_autosuspend(device); 381180ea05bSTomas Winkler 382180ea05bSTomas Winkler return -EBUSY; 383180ea05bSTomas Winkler } 384180ea05bSTomas Winkler 385180ea05bSTomas Winkler static int mei_me_pm_runtime_suspend(struct device *device) 386180ea05bSTomas Winkler { 387180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 388180ea05bSTomas Winkler struct mei_device *dev; 389180ea05bSTomas Winkler int ret; 390180ea05bSTomas Winkler 391180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime suspend\n"); 392180ea05bSTomas Winkler 393180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 394180ea05bSTomas Winkler if (!dev) 395180ea05bSTomas Winkler return -ENODEV; 396180ea05bSTomas Winkler 397180ea05bSTomas Winkler mutex_lock(&dev->device_lock); 398180ea05bSTomas Winkler 399180ea05bSTomas Winkler if (mei_write_is_idle(dev)) 4002d1995fcSAlexander Usyskin ret = mei_me_pg_enter_sync(dev); 401180ea05bSTomas Winkler else 402180ea05bSTomas Winkler ret = -EAGAIN; 403180ea05bSTomas Winkler 404180ea05bSTomas Winkler mutex_unlock(&dev->device_lock); 405180ea05bSTomas Winkler 406180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime suspend ret=%d\n", ret); 407180ea05bSTomas Winkler 40877537ad2SAlexander Usyskin if (ret && ret != -EAGAIN) 40977537ad2SAlexander Usyskin schedule_work(&dev->reset_work); 41077537ad2SAlexander Usyskin 411180ea05bSTomas Winkler return ret; 412180ea05bSTomas Winkler } 413180ea05bSTomas Winkler 414180ea05bSTomas Winkler static int mei_me_pm_runtime_resume(struct device *device) 415180ea05bSTomas Winkler { 416180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 417180ea05bSTomas Winkler struct mei_device *dev; 418180ea05bSTomas Winkler int ret; 419180ea05bSTomas Winkler 420180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime resume\n"); 421180ea05bSTomas Winkler 422180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 423180ea05bSTomas Winkler if (!dev) 424180ea05bSTomas Winkler return -ENODEV; 425180ea05bSTomas Winkler 426180ea05bSTomas Winkler mutex_lock(&dev->device_lock); 427180ea05bSTomas Winkler 4282d1995fcSAlexander Usyskin ret = mei_me_pg_exit_sync(dev); 429180ea05bSTomas Winkler 430180ea05bSTomas Winkler mutex_unlock(&dev->device_lock); 431180ea05bSTomas Winkler 432180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime resume ret = %d\n", ret); 433180ea05bSTomas Winkler 43477537ad2SAlexander Usyskin if (ret) 43577537ad2SAlexander Usyskin schedule_work(&dev->reset_work); 43677537ad2SAlexander Usyskin 437180ea05bSTomas Winkler return ret; 438180ea05bSTomas Winkler } 439e13fa90cSTomas Winkler 440e13fa90cSTomas Winkler /** 4417efceb55SGeert Uytterhoeven * mei_me_set_pm_domain - fill and set pm domain structure for device 442e13fa90cSTomas Winkler * 443e13fa90cSTomas Winkler * @dev: mei_device 444e13fa90cSTomas Winkler */ 445e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev) 446e13fa90cSTomas Winkler { 447d08b8fc0STomas Winkler struct pci_dev *pdev = to_pci_dev(dev->dev); 448e13fa90cSTomas Winkler 449e13fa90cSTomas Winkler if (pdev->dev.bus && pdev->dev.bus->pm) { 450e13fa90cSTomas Winkler dev->pg_domain.ops = *pdev->dev.bus->pm; 451e13fa90cSTomas Winkler 452e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_suspend = mei_me_pm_runtime_suspend; 453e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_resume = mei_me_pm_runtime_resume; 454e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_idle = mei_me_pm_runtime_idle; 455e13fa90cSTomas Winkler 456989561deSTomeu Vizoso dev_pm_domain_set(&pdev->dev, &dev->pg_domain); 457e13fa90cSTomas Winkler } 458e13fa90cSTomas Winkler } 459e13fa90cSTomas Winkler 460e13fa90cSTomas Winkler /** 4617efceb55SGeert Uytterhoeven * mei_me_unset_pm_domain - clean pm domain structure for device 462e13fa90cSTomas Winkler * 463e13fa90cSTomas Winkler * @dev: mei_device 464e13fa90cSTomas Winkler */ 465e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev) 466e13fa90cSTomas Winkler { 467e13fa90cSTomas Winkler /* stop using pm callbacks if any */ 468989561deSTomeu Vizoso dev_pm_domain_set(dev->dev, NULL); 469e13fa90cSTomas Winkler } 470180ea05bSTomas Winkler 471180ea05bSTomas Winkler static const struct dev_pm_ops mei_me_pm_ops = { 472180ea05bSTomas Winkler SET_SYSTEM_SLEEP_PM_OPS(mei_me_pci_suspend, 473180ea05bSTomas Winkler mei_me_pci_resume) 474180ea05bSTomas Winkler SET_RUNTIME_PM_OPS( 475180ea05bSTomas Winkler mei_me_pm_runtime_suspend, 476180ea05bSTomas Winkler mei_me_pm_runtime_resume, 477180ea05bSTomas Winkler mei_me_pm_runtime_idle) 478180ea05bSTomas Winkler }; 479180ea05bSTomas Winkler 480b68301e9STomas Winkler #define MEI_ME_PM_OPS (&mei_me_pm_ops) 4812703d4b2STomas Winkler #else 482b68301e9STomas Winkler #define MEI_ME_PM_OPS NULL 483180ea05bSTomas Winkler #endif /* CONFIG_PM */ 4842703d4b2STomas Winkler /* 4852703d4b2STomas Winkler * PCI driver structure 4862703d4b2STomas Winkler */ 487b68301e9STomas Winkler static struct pci_driver mei_me_driver = { 4882703d4b2STomas Winkler .name = KBUILD_MODNAME, 489b68301e9STomas Winkler .id_table = mei_me_pci_tbl, 490b68301e9STomas Winkler .probe = mei_me_probe, 491b68301e9STomas Winkler .remove = mei_me_remove, 4925c4c0106STomas Winkler .shutdown = mei_me_shutdown, 493b68301e9STomas Winkler .driver.pm = MEI_ME_PM_OPS, 4942703d4b2STomas Winkler }; 4952703d4b2STomas Winkler 496b68301e9STomas Winkler module_pci_driver(mei_me_driver); 4972703d4b2STomas Winkler 4982703d4b2STomas Winkler MODULE_AUTHOR("Intel Corporation"); 4992703d4b2STomas Winkler MODULE_DESCRIPTION("Intel(R) Management Engine Interface"); 5002703d4b2STomas Winkler MODULE_LICENSE("GPL v2"); 501