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/aio.h> 252703d4b2STomas Winkler #include <linux/pci.h> 262703d4b2STomas Winkler #include <linux/poll.h> 272703d4b2STomas Winkler #include <linux/ioctl.h> 282703d4b2STomas Winkler #include <linux/cdev.h> 292703d4b2STomas Winkler #include <linux/sched.h> 302703d4b2STomas Winkler #include <linux/uuid.h> 312703d4b2STomas Winkler #include <linux/compat.h> 322703d4b2STomas Winkler #include <linux/jiffies.h> 332703d4b2STomas Winkler #include <linux/interrupt.h> 342703d4b2STomas Winkler #include <linux/miscdevice.h> 352703d4b2STomas Winkler 36180ea05bSTomas Winkler #include <linux/pm_runtime.h> 37180ea05bSTomas Winkler 382703d4b2STomas Winkler #include <linux/mei.h> 392703d4b2STomas Winkler 402703d4b2STomas Winkler #include "mei_dev.h" 412703d4b2STomas Winkler #include "client.h" 426e4cd27aSTomas Winkler #include "hw-me-regs.h" 436e4cd27aSTomas Winkler #include "hw-me.h" 442703d4b2STomas Winkler 452703d4b2STomas Winkler /* mei_pci_tbl - PCI Device ID Table */ 46a05f8f86STomas Winkler static const struct pci_device_id mei_me_pci_tbl[] = { 478d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_82946GZ, mei_me_legacy_cfg)}, 488d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_82G35, mei_me_legacy_cfg)}, 498d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_82Q965, mei_me_legacy_cfg)}, 508d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_82G965, mei_me_legacy_cfg)}, 518d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_82GM965, mei_me_legacy_cfg)}, 528d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_82GME965, mei_me_legacy_cfg)}, 538d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82Q35, mei_me_legacy_cfg)}, 548d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82G33, mei_me_legacy_cfg)}, 558d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82Q33, mei_me_legacy_cfg)}, 568d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82X38, mei_me_legacy_cfg)}, 578d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_3200, mei_me_legacy_cfg)}, 588d929d48SAlexander Usyskin 598d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_6, mei_me_legacy_cfg)}, 608d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_7, mei_me_legacy_cfg)}, 618d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_8, mei_me_legacy_cfg)}, 628d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_9, mei_me_legacy_cfg)}, 638d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_10, mei_me_legacy_cfg)}, 648d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_1, mei_me_legacy_cfg)}, 658d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_2, mei_me_legacy_cfg)}, 668d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_3, mei_me_legacy_cfg)}, 678d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_4, mei_me_legacy_cfg)}, 688d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_1, mei_me_ich_cfg)}, 698d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_2, mei_me_ich_cfg)}, 708d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_3, mei_me_ich_cfg)}, 718d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_4, mei_me_ich_cfg)}, 728d929d48SAlexander Usyskin 738d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_IBXPK_1, mei_me_pch_cfg)}, 748d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_IBXPK_2, mei_me_pch_cfg)}, 758d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_CPT_1, mei_me_pch_cfg)}, 768d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_PBG_1, mei_me_pch_cfg)}, 778d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_PPT_1, mei_me_pch_cfg)}, 788d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_PPT_2, mei_me_pch_cfg)}, 798d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_PPT_3, mei_me_pch_cfg)}, 808d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_H, mei_me_pch_cfg)}, 818d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_W, mei_me_pch_cfg)}, 828d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_LP, mei_me_pch_cfg)}, 838d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_HR, mei_me_pch_cfg)}, 848d929d48SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_WPT_LP, mei_me_pch_cfg)}, 852703d4b2STomas Winkler 862703d4b2STomas Winkler /* required last entry */ 872703d4b2STomas Winkler {0, } 882703d4b2STomas Winkler }; 892703d4b2STomas Winkler 90b68301e9STomas Winkler MODULE_DEVICE_TABLE(pci, mei_me_pci_tbl); 912703d4b2STomas Winkler 92e13fa90cSTomas Winkler #ifdef CONFIG_PM_RUNTIME 93e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev); 94e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev); 95e13fa90cSTomas Winkler #else 96e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev) {} 97e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev) {} 98e13fa90cSTomas Winkler #endif /* CONFIG_PM_RUNTIME */ 99e13fa90cSTomas Winkler 1002703d4b2STomas Winkler /** 1012703d4b2STomas Winkler * mei_quirk_probe - probe for devices that doesn't valid ME interface 102393b148fSMasanari Iida * 1032703d4b2STomas Winkler * @pdev: PCI device structure 1042703d4b2STomas Winkler * @ent: entry into pci_device_table 1052703d4b2STomas Winkler * 1062703d4b2STomas Winkler * returns true if ME Interface is valid, false otherwise 1072703d4b2STomas Winkler */ 108b68301e9STomas Winkler static bool mei_me_quirk_probe(struct pci_dev *pdev, 1092703d4b2STomas Winkler const struct pci_device_id *ent) 1102703d4b2STomas Winkler { 1112703d4b2STomas Winkler u32 reg; 1125e6533a6STomas Winkler /* Cougar Point || Patsburg */ 1135e6533a6STomas Winkler if (ent->device == MEI_DEV_ID_CPT_1 || 1145e6533a6STomas Winkler ent->device == MEI_DEV_ID_PBG_1) { 1155e6533a6STomas Winkler pci_read_config_dword(pdev, PCI_CFG_HFS_2, ®); 1165e6533a6STomas Winkler /* make sure that bit 9 (NM) is up and bit 10 (DM) is down */ 1175e6533a6STomas Winkler if ((reg & 0x600) == 0x200) 1185e6533a6STomas Winkler goto no_mei; 1195e6533a6STomas Winkler } 1205e6533a6STomas Winkler 1215e6533a6STomas Winkler /* Lynx Point */ 1225e6533a6STomas Winkler if (ent->device == MEI_DEV_ID_LPT_H || 1235e6533a6STomas Winkler ent->device == MEI_DEV_ID_LPT_W || 1245e6533a6STomas Winkler ent->device == MEI_DEV_ID_LPT_HR) { 1255e6533a6STomas Winkler /* Read ME FW Status check for SPS Firmware */ 1265e6533a6STomas Winkler pci_read_config_dword(pdev, PCI_CFG_HFS_1, ®); 1275e6533a6STomas Winkler /* if bits [19:16] = 15, running SPS Firmware */ 1285e6533a6STomas Winkler if ((reg & 0xf0000) == 0xf0000) 1295e6533a6STomas Winkler goto no_mei; 1305e6533a6STomas Winkler } 1315e6533a6STomas Winkler 1325e6533a6STomas Winkler return true; 1335e6533a6STomas Winkler 1345e6533a6STomas Winkler no_mei: 1352703d4b2STomas Winkler dev_info(&pdev->dev, "Device doesn't have valid ME Interface\n"); 1362703d4b2STomas Winkler return false; 1372703d4b2STomas Winkler } 1382703d4b2STomas Winkler /** 1392703d4b2STomas Winkler * mei_probe - Device Initialization Routine 1402703d4b2STomas Winkler * 1412703d4b2STomas Winkler * @pdev: PCI device structure 1422703d4b2STomas Winkler * @ent: entry in kcs_pci_tbl 1432703d4b2STomas Winkler * 1442703d4b2STomas Winkler * returns 0 on success, <0 on failure. 1452703d4b2STomas Winkler */ 146b68301e9STomas Winkler static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 1472703d4b2STomas Winkler { 1488d929d48SAlexander Usyskin const struct mei_cfg *cfg = (struct mei_cfg *)(ent->driver_data); 1492703d4b2STomas Winkler struct mei_device *dev; 15052c34561STomas Winkler struct mei_me_hw *hw; 1512703d4b2STomas Winkler int err; 1522703d4b2STomas Winkler 1532703d4b2STomas Winkler 154b68301e9STomas Winkler if (!mei_me_quirk_probe(pdev, ent)) { 1552703d4b2STomas Winkler err = -ENODEV; 1562703d4b2STomas Winkler goto end; 1572703d4b2STomas Winkler } 1582703d4b2STomas Winkler 1592703d4b2STomas Winkler /* enable pci dev */ 1602703d4b2STomas Winkler err = pci_enable_device(pdev); 1612703d4b2STomas Winkler if (err) { 1622703d4b2STomas Winkler dev_err(&pdev->dev, "failed to enable pci device.\n"); 1632703d4b2STomas Winkler goto end; 1642703d4b2STomas Winkler } 1652703d4b2STomas Winkler /* set PCI host mastering */ 1662703d4b2STomas Winkler pci_set_master(pdev); 1672703d4b2STomas Winkler /* pci request regions for mei driver */ 1682703d4b2STomas Winkler err = pci_request_regions(pdev, KBUILD_MODNAME); 1692703d4b2STomas Winkler if (err) { 1702703d4b2STomas Winkler dev_err(&pdev->dev, "failed to get pci regions.\n"); 1712703d4b2STomas Winkler goto disable_device; 1722703d4b2STomas Winkler } 1733ecfb168STomas Winkler 1743ecfb168STomas Winkler if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) || 1753ecfb168STomas Winkler dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) { 1763ecfb168STomas Winkler 1773ecfb168STomas Winkler err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); 1783ecfb168STomas Winkler if (err) 1793ecfb168STomas Winkler err = dma_set_coherent_mask(&pdev->dev, 1803ecfb168STomas Winkler DMA_BIT_MASK(32)); 1813ecfb168STomas Winkler } 1823ecfb168STomas Winkler if (err) { 1833ecfb168STomas Winkler dev_err(&pdev->dev, "No usable DMA configuration, aborting\n"); 1843ecfb168STomas Winkler goto release_regions; 1853ecfb168STomas Winkler } 1863ecfb168STomas Winkler 1873ecfb168STomas Winkler 1882703d4b2STomas Winkler /* allocates and initializes the mei dev structure */ 1898d929d48SAlexander Usyskin dev = mei_me_dev_init(pdev, cfg); 1902703d4b2STomas Winkler if (!dev) { 1912703d4b2STomas Winkler err = -ENOMEM; 1922703d4b2STomas Winkler goto release_regions; 1932703d4b2STomas Winkler } 19452c34561STomas Winkler hw = to_me_hw(dev); 1952703d4b2STomas Winkler /* mapping IO device memory */ 19652c34561STomas Winkler hw->mem_addr = pci_iomap(pdev, 0, 0); 19752c34561STomas Winkler if (!hw->mem_addr) { 1982703d4b2STomas Winkler dev_err(&pdev->dev, "mapping I/O device memory failure.\n"); 1992703d4b2STomas Winkler err = -ENOMEM; 2002703d4b2STomas Winkler goto free_device; 2012703d4b2STomas Winkler } 2022703d4b2STomas Winkler pci_enable_msi(pdev); 2032703d4b2STomas Winkler 2042703d4b2STomas Winkler /* request and enable interrupt */ 2052703d4b2STomas Winkler if (pci_dev_msi_enabled(pdev)) 2062703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 2072703d4b2STomas Winkler NULL, 20806ecd645STomas Winkler mei_me_irq_thread_handler, 2092703d4b2STomas Winkler IRQF_ONESHOT, KBUILD_MODNAME, dev); 2102703d4b2STomas Winkler else 2112703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 21206ecd645STomas Winkler mei_me_irq_quick_handler, 21306ecd645STomas Winkler mei_me_irq_thread_handler, 2142703d4b2STomas Winkler IRQF_SHARED, KBUILD_MODNAME, dev); 2152703d4b2STomas Winkler 2162703d4b2STomas Winkler if (err) { 2172703d4b2STomas Winkler dev_err(&pdev->dev, "request_threaded_irq failure. irq = %d\n", 2182703d4b2STomas Winkler pdev->irq); 2192703d4b2STomas Winkler goto disable_msi; 2202703d4b2STomas Winkler } 2212703d4b2STomas Winkler 222c4d589beSTomas Winkler if (mei_start(dev)) { 2232703d4b2STomas Winkler dev_err(&pdev->dev, "init hw failure.\n"); 2242703d4b2STomas Winkler err = -ENODEV; 2252703d4b2STomas Winkler goto release_irq; 2262703d4b2STomas Winkler } 2272703d4b2STomas Winkler 228180ea05bSTomas Winkler pm_runtime_set_autosuspend_delay(&pdev->dev, MEI_ME_RPM_TIMEOUT); 229180ea05bSTomas Winkler pm_runtime_use_autosuspend(&pdev->dev); 230180ea05bSTomas Winkler 23130e53bb8STomas Winkler err = mei_register(dev); 2322703d4b2STomas Winkler if (err) 2332703d4b2STomas Winkler goto release_irq; 2342703d4b2STomas Winkler 2352703d4b2STomas Winkler pci_set_drvdata(pdev, dev); 2362703d4b2STomas Winkler 2372703d4b2STomas Winkler schedule_delayed_work(&dev->timer_work, HZ); 2382703d4b2STomas Winkler 239e13fa90cSTomas Winkler /* 240e13fa90cSTomas Winkler * For not wake-able HW runtime pm framework 241e13fa90cSTomas Winkler * can't be used on pci device level. 242e13fa90cSTomas Winkler * Use domain runtime pm callbacks instead. 243e13fa90cSTomas Winkler */ 244e13fa90cSTomas Winkler if (!pci_dev_run_wake(pdev)) 245e13fa90cSTomas Winkler mei_me_set_pm_domain(dev); 246e13fa90cSTomas Winkler 247180ea05bSTomas Winkler if (mei_pg_is_enabled(dev)) 248180ea05bSTomas Winkler pm_runtime_put_noidle(&pdev->dev); 249180ea05bSTomas Winkler 250c4e87b52SAlexander Usyskin dev_dbg(&pdev->dev, "initialization successful.\n"); 2512703d4b2STomas Winkler 2522703d4b2STomas Winkler return 0; 2532703d4b2STomas Winkler 2542703d4b2STomas Winkler release_irq: 255dc844b0dSTomas Winkler mei_cancel_work(dev); 2562703d4b2STomas Winkler mei_disable_interrupts(dev); 2572703d4b2STomas Winkler free_irq(pdev->irq, dev); 2582703d4b2STomas Winkler disable_msi: 2592703d4b2STomas Winkler pci_disable_msi(pdev); 26052c34561STomas Winkler pci_iounmap(pdev, hw->mem_addr); 2612703d4b2STomas Winkler free_device: 2622703d4b2STomas Winkler kfree(dev); 2632703d4b2STomas Winkler release_regions: 2642703d4b2STomas Winkler pci_release_regions(pdev); 2652703d4b2STomas Winkler disable_device: 2662703d4b2STomas Winkler pci_disable_device(pdev); 2672703d4b2STomas Winkler end: 2682703d4b2STomas Winkler dev_err(&pdev->dev, "initialization failed.\n"); 2692703d4b2STomas Winkler return err; 2702703d4b2STomas Winkler } 2712703d4b2STomas Winkler 2722703d4b2STomas Winkler /** 2732703d4b2STomas Winkler * mei_remove - Device Removal Routine 2742703d4b2STomas Winkler * 2752703d4b2STomas Winkler * @pdev: PCI device structure 2762703d4b2STomas Winkler * 2772703d4b2STomas Winkler * mei_remove is called by the PCI subsystem to alert the driver 2782703d4b2STomas Winkler * that it should release a PCI device. 2792703d4b2STomas Winkler */ 280b68301e9STomas Winkler static void mei_me_remove(struct pci_dev *pdev) 2812703d4b2STomas Winkler { 2822703d4b2STomas Winkler struct mei_device *dev; 28352c34561STomas Winkler struct mei_me_hw *hw; 2842703d4b2STomas Winkler 2852703d4b2STomas Winkler dev = pci_get_drvdata(pdev); 2862703d4b2STomas Winkler if (!dev) 2872703d4b2STomas Winkler return; 2882703d4b2STomas Winkler 289180ea05bSTomas Winkler if (mei_pg_is_enabled(dev)) 290180ea05bSTomas Winkler pm_runtime_get_noresume(&pdev->dev); 291180ea05bSTomas Winkler 29252c34561STomas Winkler hw = to_me_hw(dev); 29352c34561STomas Winkler 2942703d4b2STomas Winkler 295ed6f7ac1SPaul Bolle dev_dbg(&pdev->dev, "stop\n"); 2967cb035d9STomas Winkler mei_stop(dev); 2972703d4b2STomas Winkler 298e13fa90cSTomas Winkler if (!pci_dev_run_wake(pdev)) 299e13fa90cSTomas Winkler mei_me_unset_pm_domain(dev); 300e13fa90cSTomas Winkler 3012703d4b2STomas Winkler /* disable interrupts */ 3022703d4b2STomas Winkler mei_disable_interrupts(dev); 3032703d4b2STomas Winkler 3042703d4b2STomas Winkler free_irq(pdev->irq, dev); 3052703d4b2STomas Winkler pci_disable_msi(pdev); 3062703d4b2STomas Winkler 30752c34561STomas Winkler if (hw->mem_addr) 30852c34561STomas Winkler pci_iounmap(pdev, hw->mem_addr); 3092703d4b2STomas Winkler 31030e53bb8STomas Winkler mei_deregister(dev); 31130e53bb8STomas Winkler 3122703d4b2STomas Winkler kfree(dev); 3132703d4b2STomas Winkler 3142703d4b2STomas Winkler pci_release_regions(pdev); 3152703d4b2STomas Winkler pci_disable_device(pdev); 3162703d4b2STomas Winkler 3172703d4b2STomas Winkler 3182703d4b2STomas Winkler } 31916833257SAlexander Usyskin #ifdef CONFIG_PM_SLEEP 320b68301e9STomas Winkler static int mei_me_pci_suspend(struct device *device) 3212703d4b2STomas Winkler { 3222703d4b2STomas Winkler struct pci_dev *pdev = to_pci_dev(device); 3232703d4b2STomas Winkler struct mei_device *dev = pci_get_drvdata(pdev); 3242703d4b2STomas Winkler 3252703d4b2STomas Winkler if (!dev) 3262703d4b2STomas Winkler return -ENODEV; 3272703d4b2STomas Winkler 328ed6f7ac1SPaul Bolle dev_dbg(&pdev->dev, "suspend\n"); 3292703d4b2STomas Winkler 3307cb035d9STomas Winkler mei_stop(dev); 3317cb035d9STomas Winkler 3327cb035d9STomas Winkler mei_disable_interrupts(dev); 3332703d4b2STomas Winkler 3342703d4b2STomas Winkler free_irq(pdev->irq, dev); 3352703d4b2STomas Winkler pci_disable_msi(pdev); 3362703d4b2STomas Winkler 3377cb035d9STomas Winkler return 0; 3382703d4b2STomas Winkler } 3392703d4b2STomas Winkler 340b68301e9STomas Winkler static int mei_me_pci_resume(struct device *device) 3412703d4b2STomas Winkler { 3422703d4b2STomas Winkler struct pci_dev *pdev = to_pci_dev(device); 3432703d4b2STomas Winkler struct mei_device *dev; 3442703d4b2STomas Winkler int err; 3452703d4b2STomas Winkler 3462703d4b2STomas Winkler dev = pci_get_drvdata(pdev); 3472703d4b2STomas Winkler if (!dev) 3482703d4b2STomas Winkler return -ENODEV; 3492703d4b2STomas Winkler 3502703d4b2STomas Winkler pci_enable_msi(pdev); 3512703d4b2STomas Winkler 3522703d4b2STomas Winkler /* request and enable interrupt */ 3532703d4b2STomas Winkler if (pci_dev_msi_enabled(pdev)) 3542703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 3552703d4b2STomas Winkler NULL, 35606ecd645STomas Winkler mei_me_irq_thread_handler, 3572703d4b2STomas Winkler IRQF_ONESHOT, KBUILD_MODNAME, dev); 3582703d4b2STomas Winkler else 3592703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 36006ecd645STomas Winkler mei_me_irq_quick_handler, 36106ecd645STomas Winkler mei_me_irq_thread_handler, 3622703d4b2STomas Winkler IRQF_SHARED, KBUILD_MODNAME, dev); 3632703d4b2STomas Winkler 3642703d4b2STomas Winkler if (err) { 3652703d4b2STomas Winkler dev_err(&pdev->dev, "request_threaded_irq failed: irq = %d.\n", 3662703d4b2STomas Winkler pdev->irq); 3672703d4b2STomas Winkler return err; 3682703d4b2STomas Winkler } 3692703d4b2STomas Winkler 37033ec0826STomas Winkler err = mei_restart(dev); 37133ec0826STomas Winkler if (err) 37233ec0826STomas Winkler return err; 3732703d4b2STomas Winkler 3742703d4b2STomas Winkler /* Start timer if stopped in suspend */ 3752703d4b2STomas Winkler schedule_delayed_work(&dev->timer_work, HZ); 3762703d4b2STomas Winkler 37733ec0826STomas Winkler return 0; 3782703d4b2STomas Winkler } 379180ea05bSTomas Winkler #endif /* CONFIG_PM_SLEEP */ 38016833257SAlexander Usyskin 381180ea05bSTomas Winkler #ifdef CONFIG_PM_RUNTIME 382180ea05bSTomas Winkler static int mei_me_pm_runtime_idle(struct device *device) 383180ea05bSTomas Winkler { 384180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 385180ea05bSTomas Winkler struct mei_device *dev; 386180ea05bSTomas Winkler 387180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime_idle\n"); 388180ea05bSTomas Winkler 389180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 390180ea05bSTomas Winkler if (!dev) 391180ea05bSTomas Winkler return -ENODEV; 392180ea05bSTomas Winkler if (mei_write_is_idle(dev)) 393180ea05bSTomas Winkler pm_schedule_suspend(device, MEI_ME_RPM_TIMEOUT * 2); 394180ea05bSTomas Winkler 395180ea05bSTomas Winkler return -EBUSY; 396180ea05bSTomas Winkler } 397180ea05bSTomas Winkler 398180ea05bSTomas Winkler static int mei_me_pm_runtime_suspend(struct device *device) 399180ea05bSTomas Winkler { 400180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 401180ea05bSTomas Winkler struct mei_device *dev; 402180ea05bSTomas Winkler int ret; 403180ea05bSTomas Winkler 404180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime suspend\n"); 405180ea05bSTomas Winkler 406180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 407180ea05bSTomas Winkler if (!dev) 408180ea05bSTomas Winkler return -ENODEV; 409180ea05bSTomas Winkler 410180ea05bSTomas Winkler mutex_lock(&dev->device_lock); 411180ea05bSTomas Winkler 412180ea05bSTomas Winkler if (mei_write_is_idle(dev)) 413180ea05bSTomas Winkler ret = mei_me_pg_set_sync(dev); 414180ea05bSTomas Winkler else 415180ea05bSTomas Winkler ret = -EAGAIN; 416180ea05bSTomas Winkler 417180ea05bSTomas Winkler mutex_unlock(&dev->device_lock); 418180ea05bSTomas Winkler 419180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime suspend ret=%d\n", ret); 420180ea05bSTomas Winkler 421180ea05bSTomas Winkler return ret; 422180ea05bSTomas Winkler } 423180ea05bSTomas Winkler 424180ea05bSTomas Winkler static int mei_me_pm_runtime_resume(struct device *device) 425180ea05bSTomas Winkler { 426180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 427180ea05bSTomas Winkler struct mei_device *dev; 428180ea05bSTomas Winkler int ret; 429180ea05bSTomas Winkler 430180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime resume\n"); 431180ea05bSTomas Winkler 432180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 433180ea05bSTomas Winkler if (!dev) 434180ea05bSTomas Winkler return -ENODEV; 435180ea05bSTomas Winkler 436180ea05bSTomas Winkler mutex_lock(&dev->device_lock); 437180ea05bSTomas Winkler 438180ea05bSTomas Winkler ret = mei_me_pg_unset_sync(dev); 439180ea05bSTomas Winkler 440180ea05bSTomas Winkler mutex_unlock(&dev->device_lock); 441180ea05bSTomas Winkler 442180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime resume ret = %d\n", ret); 443180ea05bSTomas Winkler 444180ea05bSTomas Winkler return ret; 445180ea05bSTomas Winkler } 446e13fa90cSTomas Winkler 447e13fa90cSTomas Winkler /** 448e13fa90cSTomas Winkler * mei_me_set_pm_domain - fill and set pm domian stucture for device 449e13fa90cSTomas Winkler * 450e13fa90cSTomas Winkler * @dev: mei_device 451e13fa90cSTomas Winkler */ 452e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev) 453e13fa90cSTomas Winkler { 454e13fa90cSTomas Winkler struct pci_dev *pdev = dev->pdev; 455e13fa90cSTomas Winkler 456e13fa90cSTomas Winkler if (pdev->dev.bus && pdev->dev.bus->pm) { 457e13fa90cSTomas Winkler dev->pg_domain.ops = *pdev->dev.bus->pm; 458e13fa90cSTomas Winkler 459e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_suspend = mei_me_pm_runtime_suspend; 460e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_resume = mei_me_pm_runtime_resume; 461e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_idle = mei_me_pm_runtime_idle; 462e13fa90cSTomas Winkler 463e13fa90cSTomas Winkler pdev->dev.pm_domain = &dev->pg_domain; 464e13fa90cSTomas Winkler } 465e13fa90cSTomas Winkler } 466e13fa90cSTomas Winkler 467e13fa90cSTomas Winkler /** 468e13fa90cSTomas Winkler * mei_me_unset_pm_domain - clean pm domian stucture for device 469e13fa90cSTomas Winkler * 470e13fa90cSTomas Winkler * @dev: mei_device 471e13fa90cSTomas Winkler */ 472e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev) 473e13fa90cSTomas Winkler { 474e13fa90cSTomas Winkler /* stop using pm callbacks if any */ 475e13fa90cSTomas Winkler dev->pdev->dev.pm_domain = NULL; 476e13fa90cSTomas Winkler } 477180ea05bSTomas Winkler #endif /* CONFIG_PM_RUNTIME */ 478180ea05bSTomas Winkler 479180ea05bSTomas Winkler #ifdef CONFIG_PM 480180ea05bSTomas Winkler static const struct dev_pm_ops mei_me_pm_ops = { 481180ea05bSTomas Winkler SET_SYSTEM_SLEEP_PM_OPS(mei_me_pci_suspend, 482180ea05bSTomas Winkler mei_me_pci_resume) 483180ea05bSTomas Winkler SET_RUNTIME_PM_OPS( 484180ea05bSTomas Winkler mei_me_pm_runtime_suspend, 485180ea05bSTomas Winkler mei_me_pm_runtime_resume, 486180ea05bSTomas Winkler mei_me_pm_runtime_idle) 487180ea05bSTomas Winkler }; 488180ea05bSTomas Winkler 489b68301e9STomas Winkler #define MEI_ME_PM_OPS (&mei_me_pm_ops) 4902703d4b2STomas Winkler #else 491b68301e9STomas Winkler #define MEI_ME_PM_OPS NULL 492180ea05bSTomas Winkler #endif /* CONFIG_PM */ 4932703d4b2STomas Winkler /* 4942703d4b2STomas Winkler * PCI driver structure 4952703d4b2STomas Winkler */ 496b68301e9STomas Winkler static struct pci_driver mei_me_driver = { 4972703d4b2STomas Winkler .name = KBUILD_MODNAME, 498b68301e9STomas Winkler .id_table = mei_me_pci_tbl, 499b68301e9STomas Winkler .probe = mei_me_probe, 500b68301e9STomas Winkler .remove = mei_me_remove, 501b68301e9STomas Winkler .shutdown = mei_me_remove, 502b68301e9STomas Winkler .driver.pm = MEI_ME_PM_OPS, 5032703d4b2STomas Winkler }; 5042703d4b2STomas Winkler 505b68301e9STomas Winkler module_pci_driver(mei_me_driver); 5062703d4b2STomas Winkler 5072703d4b2STomas Winkler MODULE_AUTHOR("Intel Corporation"); 5082703d4b2STomas Winkler MODULE_DESCRIPTION("Intel(R) Management Engine Interface"); 5092703d4b2STomas Winkler MODULE_LICENSE("GPL v2"); 510