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[] = { 472703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82946GZ)}, 482703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82G35)}, 492703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82Q965)}, 502703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82G965)}, 512703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82GM965)}, 522703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_82GME965)}, 532703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_82Q35)}, 542703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_82G33)}, 552703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_82Q33)}, 562703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_82X38)}, 572703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_3200)}, 582703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_6)}, 592703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_7)}, 602703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_8)}, 612703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_9)}, 622703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9_10)}, 632703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9M_1)}, 642703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9M_2)}, 652703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9M_3)}, 662703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH9M_4)}, 672703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH10_1)}, 682703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH10_2)}, 692703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH10_3)}, 702703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_ICH10_4)}, 712703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_IBXPK_1)}, 722703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_IBXPK_2)}, 732703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_CPT_1)}, 742703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_PBG_1)}, 752703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_PPT_1)}, 762703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_PPT_2)}, 772703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_PPT_3)}, 7876a96359STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_LPT_H)}, 79838b3a6dSTomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_LPT_W)}, 802703d4b2STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_LPT_LP)}, 8176a96359STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_LPT_HR)}, 8276a96359STomas Winkler {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MEI_DEV_ID_WPT_LP)}, 832703d4b2STomas Winkler 842703d4b2STomas Winkler /* required last entry */ 852703d4b2STomas Winkler {0, } 862703d4b2STomas Winkler }; 872703d4b2STomas Winkler 88b68301e9STomas Winkler MODULE_DEVICE_TABLE(pci, mei_me_pci_tbl); 892703d4b2STomas Winkler 902703d4b2STomas Winkler /** 912703d4b2STomas Winkler * mei_quirk_probe - probe for devices that doesn't valid ME interface 92393b148fSMasanari Iida * 932703d4b2STomas Winkler * @pdev: PCI device structure 942703d4b2STomas Winkler * @ent: entry into pci_device_table 952703d4b2STomas Winkler * 962703d4b2STomas Winkler * returns true if ME Interface is valid, false otherwise 972703d4b2STomas Winkler */ 98b68301e9STomas Winkler static bool mei_me_quirk_probe(struct pci_dev *pdev, 992703d4b2STomas Winkler const struct pci_device_id *ent) 1002703d4b2STomas Winkler { 1012703d4b2STomas Winkler u32 reg; 1025e6533a6STomas Winkler /* Cougar Point || Patsburg */ 1035e6533a6STomas Winkler if (ent->device == MEI_DEV_ID_CPT_1 || 1045e6533a6STomas Winkler ent->device == MEI_DEV_ID_PBG_1) { 1055e6533a6STomas Winkler pci_read_config_dword(pdev, PCI_CFG_HFS_2, ®); 1065e6533a6STomas Winkler /* make sure that bit 9 (NM) is up and bit 10 (DM) is down */ 1075e6533a6STomas Winkler if ((reg & 0x600) == 0x200) 1085e6533a6STomas Winkler goto no_mei; 1095e6533a6STomas Winkler } 1105e6533a6STomas Winkler 1115e6533a6STomas Winkler /* Lynx Point */ 1125e6533a6STomas Winkler if (ent->device == MEI_DEV_ID_LPT_H || 1135e6533a6STomas Winkler ent->device == MEI_DEV_ID_LPT_W || 1145e6533a6STomas Winkler ent->device == MEI_DEV_ID_LPT_HR) { 1155e6533a6STomas Winkler /* Read ME FW Status check for SPS Firmware */ 1165e6533a6STomas Winkler pci_read_config_dword(pdev, PCI_CFG_HFS_1, ®); 1175e6533a6STomas Winkler /* if bits [19:16] = 15, running SPS Firmware */ 1185e6533a6STomas Winkler if ((reg & 0xf0000) == 0xf0000) 1195e6533a6STomas Winkler goto no_mei; 1205e6533a6STomas Winkler } 1215e6533a6STomas Winkler 1225e6533a6STomas Winkler return true; 1235e6533a6STomas Winkler 1245e6533a6STomas Winkler no_mei: 1252703d4b2STomas Winkler dev_info(&pdev->dev, "Device doesn't have valid ME Interface\n"); 1262703d4b2STomas Winkler return false; 1272703d4b2STomas Winkler } 1282703d4b2STomas Winkler /** 1292703d4b2STomas Winkler * mei_probe - Device Initialization Routine 1302703d4b2STomas Winkler * 1312703d4b2STomas Winkler * @pdev: PCI device structure 1322703d4b2STomas Winkler * @ent: entry in kcs_pci_tbl 1332703d4b2STomas Winkler * 1342703d4b2STomas Winkler * returns 0 on success, <0 on failure. 1352703d4b2STomas Winkler */ 136b68301e9STomas Winkler static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 1372703d4b2STomas Winkler { 1382703d4b2STomas Winkler struct mei_device *dev; 13952c34561STomas Winkler struct mei_me_hw *hw; 1402703d4b2STomas Winkler int err; 1412703d4b2STomas Winkler 1422703d4b2STomas Winkler 143b68301e9STomas Winkler if (!mei_me_quirk_probe(pdev, ent)) { 1442703d4b2STomas Winkler err = -ENODEV; 1452703d4b2STomas Winkler goto end; 1462703d4b2STomas Winkler } 1472703d4b2STomas Winkler 1482703d4b2STomas Winkler /* enable pci dev */ 1492703d4b2STomas Winkler err = pci_enable_device(pdev); 1502703d4b2STomas Winkler if (err) { 1512703d4b2STomas Winkler dev_err(&pdev->dev, "failed to enable pci device.\n"); 1522703d4b2STomas Winkler goto end; 1532703d4b2STomas Winkler } 1542703d4b2STomas Winkler /* set PCI host mastering */ 1552703d4b2STomas Winkler pci_set_master(pdev); 1562703d4b2STomas Winkler /* pci request regions for mei driver */ 1572703d4b2STomas Winkler err = pci_request_regions(pdev, KBUILD_MODNAME); 1582703d4b2STomas Winkler if (err) { 1592703d4b2STomas Winkler dev_err(&pdev->dev, "failed to get pci regions.\n"); 1602703d4b2STomas Winkler goto disable_device; 1612703d4b2STomas Winkler } 1623ecfb168STomas Winkler 1633ecfb168STomas Winkler if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) || 1643ecfb168STomas Winkler dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) { 1653ecfb168STomas Winkler 1663ecfb168STomas Winkler err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); 1673ecfb168STomas Winkler if (err) 1683ecfb168STomas Winkler err = dma_set_coherent_mask(&pdev->dev, 1693ecfb168STomas Winkler DMA_BIT_MASK(32)); 1703ecfb168STomas Winkler } 1713ecfb168STomas Winkler if (err) { 1723ecfb168STomas Winkler dev_err(&pdev->dev, "No usable DMA configuration, aborting\n"); 1733ecfb168STomas Winkler goto release_regions; 1743ecfb168STomas Winkler } 1753ecfb168STomas Winkler 1763ecfb168STomas Winkler 1772703d4b2STomas Winkler /* allocates and initializes the mei dev structure */ 17852c34561STomas Winkler dev = mei_me_dev_init(pdev); 1792703d4b2STomas Winkler if (!dev) { 1802703d4b2STomas Winkler err = -ENOMEM; 1812703d4b2STomas Winkler goto release_regions; 1822703d4b2STomas Winkler } 18352c34561STomas Winkler hw = to_me_hw(dev); 1842703d4b2STomas Winkler /* mapping IO device memory */ 18552c34561STomas Winkler hw->mem_addr = pci_iomap(pdev, 0, 0); 18652c34561STomas Winkler if (!hw->mem_addr) { 1872703d4b2STomas Winkler dev_err(&pdev->dev, "mapping I/O device memory failure.\n"); 1882703d4b2STomas Winkler err = -ENOMEM; 1892703d4b2STomas Winkler goto free_device; 1902703d4b2STomas Winkler } 1912703d4b2STomas Winkler pci_enable_msi(pdev); 1922703d4b2STomas Winkler 1932703d4b2STomas Winkler /* request and enable interrupt */ 1942703d4b2STomas Winkler if (pci_dev_msi_enabled(pdev)) 1952703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 1962703d4b2STomas Winkler NULL, 19706ecd645STomas Winkler mei_me_irq_thread_handler, 1982703d4b2STomas Winkler IRQF_ONESHOT, KBUILD_MODNAME, dev); 1992703d4b2STomas Winkler else 2002703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 20106ecd645STomas Winkler mei_me_irq_quick_handler, 20206ecd645STomas Winkler mei_me_irq_thread_handler, 2032703d4b2STomas Winkler IRQF_SHARED, KBUILD_MODNAME, dev); 2042703d4b2STomas Winkler 2052703d4b2STomas Winkler if (err) { 2062703d4b2STomas Winkler dev_err(&pdev->dev, "request_threaded_irq failure. irq = %d\n", 2072703d4b2STomas Winkler pdev->irq); 2082703d4b2STomas Winkler goto disable_msi; 2092703d4b2STomas Winkler } 2102703d4b2STomas Winkler 211c4d589beSTomas Winkler if (mei_start(dev)) { 2122703d4b2STomas Winkler dev_err(&pdev->dev, "init hw failure.\n"); 2132703d4b2STomas Winkler err = -ENODEV; 2142703d4b2STomas Winkler goto release_irq; 2152703d4b2STomas Winkler } 2162703d4b2STomas Winkler 217180ea05bSTomas Winkler pm_runtime_set_autosuspend_delay(&pdev->dev, MEI_ME_RPM_TIMEOUT); 218180ea05bSTomas Winkler pm_runtime_use_autosuspend(&pdev->dev); 219180ea05bSTomas Winkler 22030e53bb8STomas Winkler err = mei_register(dev); 2212703d4b2STomas Winkler if (err) 2222703d4b2STomas Winkler goto release_irq; 2232703d4b2STomas Winkler 2242703d4b2STomas Winkler pci_set_drvdata(pdev, dev); 2252703d4b2STomas Winkler 2262703d4b2STomas Winkler schedule_delayed_work(&dev->timer_work, HZ); 2272703d4b2STomas Winkler 228180ea05bSTomas Winkler if (mei_pg_is_enabled(dev)) 229180ea05bSTomas Winkler pm_runtime_put_noidle(&pdev->dev); 230180ea05bSTomas Winkler 231c4e87b52SAlexander Usyskin dev_dbg(&pdev->dev, "initialization successful.\n"); 2322703d4b2STomas Winkler 2332703d4b2STomas Winkler return 0; 2342703d4b2STomas Winkler 2352703d4b2STomas Winkler release_irq: 236dc844b0dSTomas Winkler mei_cancel_work(dev); 2372703d4b2STomas Winkler mei_disable_interrupts(dev); 2382703d4b2STomas Winkler free_irq(pdev->irq, dev); 2392703d4b2STomas Winkler disable_msi: 2402703d4b2STomas Winkler pci_disable_msi(pdev); 24152c34561STomas Winkler pci_iounmap(pdev, hw->mem_addr); 2422703d4b2STomas Winkler free_device: 2432703d4b2STomas Winkler kfree(dev); 2442703d4b2STomas Winkler release_regions: 2452703d4b2STomas Winkler pci_release_regions(pdev); 2462703d4b2STomas Winkler disable_device: 2472703d4b2STomas Winkler pci_disable_device(pdev); 2482703d4b2STomas Winkler end: 2492703d4b2STomas Winkler dev_err(&pdev->dev, "initialization failed.\n"); 2502703d4b2STomas Winkler return err; 2512703d4b2STomas Winkler } 2522703d4b2STomas Winkler 2532703d4b2STomas Winkler /** 2542703d4b2STomas Winkler * mei_remove - Device Removal Routine 2552703d4b2STomas Winkler * 2562703d4b2STomas Winkler * @pdev: PCI device structure 2572703d4b2STomas Winkler * 2582703d4b2STomas Winkler * mei_remove is called by the PCI subsystem to alert the driver 2592703d4b2STomas Winkler * that it should release a PCI device. 2602703d4b2STomas Winkler */ 261b68301e9STomas Winkler static void mei_me_remove(struct pci_dev *pdev) 2622703d4b2STomas Winkler { 2632703d4b2STomas Winkler struct mei_device *dev; 26452c34561STomas Winkler struct mei_me_hw *hw; 2652703d4b2STomas Winkler 2662703d4b2STomas Winkler dev = pci_get_drvdata(pdev); 2672703d4b2STomas Winkler if (!dev) 2682703d4b2STomas Winkler return; 2692703d4b2STomas Winkler 270180ea05bSTomas Winkler if (mei_pg_is_enabled(dev)) 271180ea05bSTomas Winkler pm_runtime_get_noresume(&pdev->dev); 272180ea05bSTomas Winkler 27352c34561STomas Winkler hw = to_me_hw(dev); 27452c34561STomas Winkler 2752703d4b2STomas Winkler 276ed6f7ac1SPaul Bolle dev_dbg(&pdev->dev, "stop\n"); 2777cb035d9STomas Winkler mei_stop(dev); 2782703d4b2STomas Winkler 2792703d4b2STomas Winkler /* disable interrupts */ 2802703d4b2STomas Winkler mei_disable_interrupts(dev); 2812703d4b2STomas Winkler 2822703d4b2STomas Winkler free_irq(pdev->irq, dev); 2832703d4b2STomas Winkler pci_disable_msi(pdev); 2842703d4b2STomas Winkler 28552c34561STomas Winkler if (hw->mem_addr) 28652c34561STomas Winkler pci_iounmap(pdev, hw->mem_addr); 2872703d4b2STomas Winkler 28830e53bb8STomas Winkler mei_deregister(dev); 28930e53bb8STomas Winkler 2902703d4b2STomas Winkler kfree(dev); 2912703d4b2STomas Winkler 2922703d4b2STomas Winkler pci_release_regions(pdev); 2932703d4b2STomas Winkler pci_disable_device(pdev); 2942703d4b2STomas Winkler 2952703d4b2STomas Winkler 2962703d4b2STomas Winkler } 29716833257SAlexander Usyskin #ifdef CONFIG_PM_SLEEP 298b68301e9STomas Winkler static int mei_me_pci_suspend(struct device *device) 2992703d4b2STomas Winkler { 3002703d4b2STomas Winkler struct pci_dev *pdev = to_pci_dev(device); 3012703d4b2STomas Winkler struct mei_device *dev = pci_get_drvdata(pdev); 3022703d4b2STomas Winkler 3032703d4b2STomas Winkler if (!dev) 3042703d4b2STomas Winkler return -ENODEV; 3052703d4b2STomas Winkler 306ed6f7ac1SPaul Bolle dev_dbg(&pdev->dev, "suspend\n"); 3072703d4b2STomas Winkler 3087cb035d9STomas Winkler mei_stop(dev); 3097cb035d9STomas Winkler 3107cb035d9STomas Winkler mei_disable_interrupts(dev); 3112703d4b2STomas Winkler 3122703d4b2STomas Winkler free_irq(pdev->irq, dev); 3132703d4b2STomas Winkler pci_disable_msi(pdev); 3142703d4b2STomas Winkler 3157cb035d9STomas Winkler return 0; 3162703d4b2STomas Winkler } 3172703d4b2STomas Winkler 318b68301e9STomas Winkler static int mei_me_pci_resume(struct device *device) 3192703d4b2STomas Winkler { 3202703d4b2STomas Winkler struct pci_dev *pdev = to_pci_dev(device); 3212703d4b2STomas Winkler struct mei_device *dev; 3222703d4b2STomas Winkler int err; 3232703d4b2STomas Winkler 3242703d4b2STomas Winkler dev = pci_get_drvdata(pdev); 3252703d4b2STomas Winkler if (!dev) 3262703d4b2STomas Winkler return -ENODEV; 3272703d4b2STomas Winkler 3282703d4b2STomas Winkler pci_enable_msi(pdev); 3292703d4b2STomas Winkler 3302703d4b2STomas Winkler /* request and enable interrupt */ 3312703d4b2STomas Winkler if (pci_dev_msi_enabled(pdev)) 3322703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 3332703d4b2STomas Winkler NULL, 33406ecd645STomas Winkler mei_me_irq_thread_handler, 3352703d4b2STomas Winkler IRQF_ONESHOT, KBUILD_MODNAME, dev); 3362703d4b2STomas Winkler else 3372703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 33806ecd645STomas Winkler mei_me_irq_quick_handler, 33906ecd645STomas Winkler mei_me_irq_thread_handler, 3402703d4b2STomas Winkler IRQF_SHARED, KBUILD_MODNAME, dev); 3412703d4b2STomas Winkler 3422703d4b2STomas Winkler if (err) { 3432703d4b2STomas Winkler dev_err(&pdev->dev, "request_threaded_irq failed: irq = %d.\n", 3442703d4b2STomas Winkler pdev->irq); 3452703d4b2STomas Winkler return err; 3462703d4b2STomas Winkler } 3472703d4b2STomas Winkler 34833ec0826STomas Winkler err = mei_restart(dev); 34933ec0826STomas Winkler if (err) 35033ec0826STomas Winkler return err; 3512703d4b2STomas Winkler 3522703d4b2STomas Winkler /* Start timer if stopped in suspend */ 3532703d4b2STomas Winkler schedule_delayed_work(&dev->timer_work, HZ); 3542703d4b2STomas Winkler 35533ec0826STomas Winkler return 0; 3562703d4b2STomas Winkler } 357180ea05bSTomas Winkler #endif /* CONFIG_PM_SLEEP */ 35816833257SAlexander Usyskin 359180ea05bSTomas Winkler #ifdef CONFIG_PM_RUNTIME 360180ea05bSTomas Winkler static int mei_me_pm_runtime_idle(struct device *device) 361180ea05bSTomas Winkler { 362180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 363180ea05bSTomas Winkler struct mei_device *dev; 364180ea05bSTomas Winkler 365180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime_idle\n"); 366180ea05bSTomas Winkler 367180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 368180ea05bSTomas Winkler if (!dev) 369180ea05bSTomas Winkler return -ENODEV; 370180ea05bSTomas Winkler if (mei_write_is_idle(dev)) 371180ea05bSTomas Winkler pm_schedule_suspend(device, MEI_ME_RPM_TIMEOUT * 2); 372180ea05bSTomas Winkler 373180ea05bSTomas Winkler return -EBUSY; 374180ea05bSTomas Winkler } 375180ea05bSTomas Winkler 376180ea05bSTomas Winkler static int mei_me_pm_runtime_suspend(struct device *device) 377180ea05bSTomas Winkler { 378180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 379180ea05bSTomas Winkler struct mei_device *dev; 380180ea05bSTomas Winkler int ret; 381180ea05bSTomas Winkler 382180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime suspend\n"); 383180ea05bSTomas Winkler 384180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 385180ea05bSTomas Winkler if (!dev) 386180ea05bSTomas Winkler return -ENODEV; 387180ea05bSTomas Winkler 388180ea05bSTomas Winkler mutex_lock(&dev->device_lock); 389180ea05bSTomas Winkler 390180ea05bSTomas Winkler if (mei_write_is_idle(dev)) 391180ea05bSTomas Winkler ret = mei_me_pg_set_sync(dev); 392180ea05bSTomas Winkler else 393180ea05bSTomas Winkler ret = -EAGAIN; 394180ea05bSTomas Winkler 395180ea05bSTomas Winkler mutex_unlock(&dev->device_lock); 396180ea05bSTomas Winkler 397180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime suspend ret=%d\n", ret); 398180ea05bSTomas Winkler 399180ea05bSTomas Winkler return ret; 400180ea05bSTomas Winkler } 401180ea05bSTomas Winkler 402180ea05bSTomas Winkler static int mei_me_pm_runtime_resume(struct device *device) 403180ea05bSTomas Winkler { 404180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 405180ea05bSTomas Winkler struct mei_device *dev; 406180ea05bSTomas Winkler int ret; 407180ea05bSTomas Winkler 408180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime resume\n"); 409180ea05bSTomas Winkler 410180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 411180ea05bSTomas Winkler if (!dev) 412180ea05bSTomas Winkler return -ENODEV; 413180ea05bSTomas Winkler 414180ea05bSTomas Winkler mutex_lock(&dev->device_lock); 415180ea05bSTomas Winkler 416180ea05bSTomas Winkler ret = mei_me_pg_unset_sync(dev); 417180ea05bSTomas Winkler 418180ea05bSTomas Winkler mutex_unlock(&dev->device_lock); 419180ea05bSTomas Winkler 420180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime resume ret = %d\n", ret); 421180ea05bSTomas Winkler 422180ea05bSTomas Winkler return ret; 423180ea05bSTomas Winkler } 424180ea05bSTomas Winkler #endif /* CONFIG_PM_RUNTIME */ 425180ea05bSTomas Winkler 426180ea05bSTomas Winkler #ifdef CONFIG_PM 427180ea05bSTomas Winkler static const struct dev_pm_ops mei_me_pm_ops = { 428180ea05bSTomas Winkler SET_SYSTEM_SLEEP_PM_OPS(mei_me_pci_suspend, 429180ea05bSTomas Winkler mei_me_pci_resume) 430180ea05bSTomas Winkler SET_RUNTIME_PM_OPS( 431180ea05bSTomas Winkler mei_me_pm_runtime_suspend, 432180ea05bSTomas Winkler mei_me_pm_runtime_resume, 433180ea05bSTomas Winkler mei_me_pm_runtime_idle) 434180ea05bSTomas Winkler }; 435180ea05bSTomas Winkler 436b68301e9STomas Winkler #define MEI_ME_PM_OPS (&mei_me_pm_ops) 4372703d4b2STomas Winkler #else 438b68301e9STomas Winkler #define MEI_ME_PM_OPS NULL 439180ea05bSTomas Winkler #endif /* CONFIG_PM */ 4402703d4b2STomas Winkler /* 4412703d4b2STomas Winkler * PCI driver structure 4422703d4b2STomas Winkler */ 443b68301e9STomas Winkler static struct pci_driver mei_me_driver = { 4442703d4b2STomas Winkler .name = KBUILD_MODNAME, 445b68301e9STomas Winkler .id_table = mei_me_pci_tbl, 446b68301e9STomas Winkler .probe = mei_me_probe, 447b68301e9STomas Winkler .remove = mei_me_remove, 448b68301e9STomas Winkler .shutdown = mei_me_remove, 449b68301e9STomas Winkler .driver.pm = MEI_ME_PM_OPS, 4502703d4b2STomas Winkler }; 4512703d4b2STomas Winkler 452b68301e9STomas Winkler module_pci_driver(mei_me_driver); 4532703d4b2STomas Winkler 4542703d4b2STomas Winkler MODULE_AUTHOR("Intel Corporation"); 4552703d4b2STomas Winkler MODULE_DESCRIPTION("Intel(R) Management Engine Interface"); 4562703d4b2STomas Winkler MODULE_LICENSE("GPL v2"); 457