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 90e13fa90cSTomas Winkler #ifdef CONFIG_PM_RUNTIME 91e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev); 92e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev); 93e13fa90cSTomas Winkler #else 94e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev) {} 95e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev) {} 96e13fa90cSTomas Winkler #endif /* CONFIG_PM_RUNTIME */ 97e13fa90cSTomas Winkler 982703d4b2STomas Winkler /** 992703d4b2STomas Winkler * mei_quirk_probe - probe for devices that doesn't valid ME interface 100393b148fSMasanari Iida * 1012703d4b2STomas Winkler * @pdev: PCI device structure 1022703d4b2STomas Winkler * @ent: entry into pci_device_table 1032703d4b2STomas Winkler * 1042703d4b2STomas Winkler * returns true if ME Interface is valid, false otherwise 1052703d4b2STomas Winkler */ 106b68301e9STomas Winkler static bool mei_me_quirk_probe(struct pci_dev *pdev, 1072703d4b2STomas Winkler const struct pci_device_id *ent) 1082703d4b2STomas Winkler { 1092703d4b2STomas Winkler u32 reg; 1105e6533a6STomas Winkler /* Cougar Point || Patsburg */ 1115e6533a6STomas Winkler if (ent->device == MEI_DEV_ID_CPT_1 || 1125e6533a6STomas Winkler ent->device == MEI_DEV_ID_PBG_1) { 1135e6533a6STomas Winkler pci_read_config_dword(pdev, PCI_CFG_HFS_2, ®); 1145e6533a6STomas Winkler /* make sure that bit 9 (NM) is up and bit 10 (DM) is down */ 1155e6533a6STomas Winkler if ((reg & 0x600) == 0x200) 1165e6533a6STomas Winkler goto no_mei; 1175e6533a6STomas Winkler } 1185e6533a6STomas Winkler 1195e6533a6STomas Winkler /* Lynx Point */ 1205e6533a6STomas Winkler if (ent->device == MEI_DEV_ID_LPT_H || 1215e6533a6STomas Winkler ent->device == MEI_DEV_ID_LPT_W || 1225e6533a6STomas Winkler ent->device == MEI_DEV_ID_LPT_HR) { 1235e6533a6STomas Winkler /* Read ME FW Status check for SPS Firmware */ 1245e6533a6STomas Winkler pci_read_config_dword(pdev, PCI_CFG_HFS_1, ®); 1255e6533a6STomas Winkler /* if bits [19:16] = 15, running SPS Firmware */ 1265e6533a6STomas Winkler if ((reg & 0xf0000) == 0xf0000) 1275e6533a6STomas Winkler goto no_mei; 1285e6533a6STomas Winkler } 1295e6533a6STomas Winkler 1305e6533a6STomas Winkler return true; 1315e6533a6STomas Winkler 1325e6533a6STomas Winkler no_mei: 1332703d4b2STomas Winkler dev_info(&pdev->dev, "Device doesn't have valid ME Interface\n"); 1342703d4b2STomas Winkler return false; 1352703d4b2STomas Winkler } 1362703d4b2STomas Winkler /** 1372703d4b2STomas Winkler * mei_probe - Device Initialization Routine 1382703d4b2STomas Winkler * 1392703d4b2STomas Winkler * @pdev: PCI device structure 1402703d4b2STomas Winkler * @ent: entry in kcs_pci_tbl 1412703d4b2STomas Winkler * 1422703d4b2STomas Winkler * returns 0 on success, <0 on failure. 1432703d4b2STomas Winkler */ 144b68301e9STomas Winkler static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 1452703d4b2STomas Winkler { 1462703d4b2STomas Winkler struct mei_device *dev; 14752c34561STomas Winkler struct mei_me_hw *hw; 1482703d4b2STomas Winkler int err; 1492703d4b2STomas Winkler 1502703d4b2STomas Winkler 151b68301e9STomas Winkler if (!mei_me_quirk_probe(pdev, ent)) { 1522703d4b2STomas Winkler err = -ENODEV; 1532703d4b2STomas Winkler goto end; 1542703d4b2STomas Winkler } 1552703d4b2STomas Winkler 1562703d4b2STomas Winkler /* enable pci dev */ 1572703d4b2STomas Winkler err = pci_enable_device(pdev); 1582703d4b2STomas Winkler if (err) { 1592703d4b2STomas Winkler dev_err(&pdev->dev, "failed to enable pci device.\n"); 1602703d4b2STomas Winkler goto end; 1612703d4b2STomas Winkler } 1622703d4b2STomas Winkler /* set PCI host mastering */ 1632703d4b2STomas Winkler pci_set_master(pdev); 1642703d4b2STomas Winkler /* pci request regions for mei driver */ 1652703d4b2STomas Winkler err = pci_request_regions(pdev, KBUILD_MODNAME); 1662703d4b2STomas Winkler if (err) { 1672703d4b2STomas Winkler dev_err(&pdev->dev, "failed to get pci regions.\n"); 1682703d4b2STomas Winkler goto disable_device; 1692703d4b2STomas Winkler } 1703ecfb168STomas Winkler 1713ecfb168STomas Winkler if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) || 1723ecfb168STomas Winkler dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) { 1733ecfb168STomas Winkler 1743ecfb168STomas Winkler err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); 1753ecfb168STomas Winkler if (err) 1763ecfb168STomas Winkler err = dma_set_coherent_mask(&pdev->dev, 1773ecfb168STomas Winkler DMA_BIT_MASK(32)); 1783ecfb168STomas Winkler } 1793ecfb168STomas Winkler if (err) { 1803ecfb168STomas Winkler dev_err(&pdev->dev, "No usable DMA configuration, aborting\n"); 1813ecfb168STomas Winkler goto release_regions; 1823ecfb168STomas Winkler } 1833ecfb168STomas Winkler 1843ecfb168STomas Winkler 1852703d4b2STomas Winkler /* allocates and initializes the mei dev structure */ 18652c34561STomas Winkler dev = mei_me_dev_init(pdev); 1872703d4b2STomas Winkler if (!dev) { 1882703d4b2STomas Winkler err = -ENOMEM; 1892703d4b2STomas Winkler goto release_regions; 1902703d4b2STomas Winkler } 19152c34561STomas Winkler hw = to_me_hw(dev); 1922703d4b2STomas Winkler /* mapping IO device memory */ 19352c34561STomas Winkler hw->mem_addr = pci_iomap(pdev, 0, 0); 19452c34561STomas Winkler if (!hw->mem_addr) { 1952703d4b2STomas Winkler dev_err(&pdev->dev, "mapping I/O device memory failure.\n"); 1962703d4b2STomas Winkler err = -ENOMEM; 1972703d4b2STomas Winkler goto free_device; 1982703d4b2STomas Winkler } 1992703d4b2STomas Winkler pci_enable_msi(pdev); 2002703d4b2STomas Winkler 2012703d4b2STomas Winkler /* request and enable interrupt */ 2022703d4b2STomas Winkler if (pci_dev_msi_enabled(pdev)) 2032703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 2042703d4b2STomas Winkler NULL, 20506ecd645STomas Winkler mei_me_irq_thread_handler, 2062703d4b2STomas Winkler IRQF_ONESHOT, KBUILD_MODNAME, dev); 2072703d4b2STomas Winkler else 2082703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 20906ecd645STomas Winkler mei_me_irq_quick_handler, 21006ecd645STomas Winkler mei_me_irq_thread_handler, 2112703d4b2STomas Winkler IRQF_SHARED, KBUILD_MODNAME, dev); 2122703d4b2STomas Winkler 2132703d4b2STomas Winkler if (err) { 2142703d4b2STomas Winkler dev_err(&pdev->dev, "request_threaded_irq failure. irq = %d\n", 2152703d4b2STomas Winkler pdev->irq); 2162703d4b2STomas Winkler goto disable_msi; 2172703d4b2STomas Winkler } 2182703d4b2STomas Winkler 219c4d589beSTomas Winkler if (mei_start(dev)) { 2202703d4b2STomas Winkler dev_err(&pdev->dev, "init hw failure.\n"); 2212703d4b2STomas Winkler err = -ENODEV; 2222703d4b2STomas Winkler goto release_irq; 2232703d4b2STomas Winkler } 2242703d4b2STomas Winkler 225180ea05bSTomas Winkler pm_runtime_set_autosuspend_delay(&pdev->dev, MEI_ME_RPM_TIMEOUT); 226180ea05bSTomas Winkler pm_runtime_use_autosuspend(&pdev->dev); 227180ea05bSTomas Winkler 22830e53bb8STomas Winkler err = mei_register(dev); 2292703d4b2STomas Winkler if (err) 2302703d4b2STomas Winkler goto release_irq; 2312703d4b2STomas Winkler 2322703d4b2STomas Winkler pci_set_drvdata(pdev, dev); 2332703d4b2STomas Winkler 2342703d4b2STomas Winkler schedule_delayed_work(&dev->timer_work, HZ); 2352703d4b2STomas Winkler 236e13fa90cSTomas Winkler /* 237e13fa90cSTomas Winkler * For not wake-able HW runtime pm framework 238e13fa90cSTomas Winkler * can't be used on pci device level. 239e13fa90cSTomas Winkler * Use domain runtime pm callbacks instead. 240e13fa90cSTomas Winkler */ 241e13fa90cSTomas Winkler if (!pci_dev_run_wake(pdev)) 242e13fa90cSTomas Winkler mei_me_set_pm_domain(dev); 243e13fa90cSTomas Winkler 244180ea05bSTomas Winkler if (mei_pg_is_enabled(dev)) 245180ea05bSTomas Winkler pm_runtime_put_noidle(&pdev->dev); 246180ea05bSTomas Winkler 247c4e87b52SAlexander Usyskin dev_dbg(&pdev->dev, "initialization successful.\n"); 2482703d4b2STomas Winkler 2492703d4b2STomas Winkler return 0; 2502703d4b2STomas Winkler 2512703d4b2STomas Winkler release_irq: 252dc844b0dSTomas Winkler mei_cancel_work(dev); 2532703d4b2STomas Winkler mei_disable_interrupts(dev); 2542703d4b2STomas Winkler free_irq(pdev->irq, dev); 2552703d4b2STomas Winkler disable_msi: 2562703d4b2STomas Winkler pci_disable_msi(pdev); 25752c34561STomas Winkler pci_iounmap(pdev, hw->mem_addr); 2582703d4b2STomas Winkler free_device: 2592703d4b2STomas Winkler kfree(dev); 2602703d4b2STomas Winkler release_regions: 2612703d4b2STomas Winkler pci_release_regions(pdev); 2622703d4b2STomas Winkler disable_device: 2632703d4b2STomas Winkler pci_disable_device(pdev); 2642703d4b2STomas Winkler end: 2652703d4b2STomas Winkler dev_err(&pdev->dev, "initialization failed.\n"); 2662703d4b2STomas Winkler return err; 2672703d4b2STomas Winkler } 2682703d4b2STomas Winkler 2692703d4b2STomas Winkler /** 2702703d4b2STomas Winkler * mei_remove - Device Removal Routine 2712703d4b2STomas Winkler * 2722703d4b2STomas Winkler * @pdev: PCI device structure 2732703d4b2STomas Winkler * 2742703d4b2STomas Winkler * mei_remove is called by the PCI subsystem to alert the driver 2752703d4b2STomas Winkler * that it should release a PCI device. 2762703d4b2STomas Winkler */ 277b68301e9STomas Winkler static void mei_me_remove(struct pci_dev *pdev) 2782703d4b2STomas Winkler { 2792703d4b2STomas Winkler struct mei_device *dev; 28052c34561STomas Winkler struct mei_me_hw *hw; 2812703d4b2STomas Winkler 2822703d4b2STomas Winkler dev = pci_get_drvdata(pdev); 2832703d4b2STomas Winkler if (!dev) 2842703d4b2STomas Winkler return; 2852703d4b2STomas Winkler 286180ea05bSTomas Winkler if (mei_pg_is_enabled(dev)) 287180ea05bSTomas Winkler pm_runtime_get_noresume(&pdev->dev); 288180ea05bSTomas Winkler 28952c34561STomas Winkler hw = to_me_hw(dev); 29052c34561STomas Winkler 2912703d4b2STomas Winkler 292ed6f7ac1SPaul Bolle dev_dbg(&pdev->dev, "stop\n"); 2937cb035d9STomas Winkler mei_stop(dev); 2942703d4b2STomas Winkler 295e13fa90cSTomas Winkler if (!pci_dev_run_wake(pdev)) 296e13fa90cSTomas Winkler mei_me_unset_pm_domain(dev); 297e13fa90cSTomas Winkler 2982703d4b2STomas Winkler /* disable interrupts */ 2992703d4b2STomas Winkler mei_disable_interrupts(dev); 3002703d4b2STomas Winkler 3012703d4b2STomas Winkler free_irq(pdev->irq, dev); 3022703d4b2STomas Winkler pci_disable_msi(pdev); 3032703d4b2STomas Winkler 30452c34561STomas Winkler if (hw->mem_addr) 30552c34561STomas Winkler pci_iounmap(pdev, hw->mem_addr); 3062703d4b2STomas Winkler 30730e53bb8STomas Winkler mei_deregister(dev); 30830e53bb8STomas Winkler 3092703d4b2STomas Winkler kfree(dev); 3102703d4b2STomas Winkler 3112703d4b2STomas Winkler pci_release_regions(pdev); 3122703d4b2STomas Winkler pci_disable_device(pdev); 3132703d4b2STomas Winkler 3142703d4b2STomas Winkler 3152703d4b2STomas Winkler } 31616833257SAlexander Usyskin #ifdef CONFIG_PM_SLEEP 317b68301e9STomas Winkler static int mei_me_pci_suspend(struct device *device) 3182703d4b2STomas Winkler { 3192703d4b2STomas Winkler struct pci_dev *pdev = to_pci_dev(device); 3202703d4b2STomas Winkler struct mei_device *dev = pci_get_drvdata(pdev); 3212703d4b2STomas Winkler 3222703d4b2STomas Winkler if (!dev) 3232703d4b2STomas Winkler return -ENODEV; 3242703d4b2STomas Winkler 325ed6f7ac1SPaul Bolle dev_dbg(&pdev->dev, "suspend\n"); 3262703d4b2STomas Winkler 3277cb035d9STomas Winkler mei_stop(dev); 3287cb035d9STomas Winkler 3297cb035d9STomas Winkler mei_disable_interrupts(dev); 3302703d4b2STomas Winkler 3312703d4b2STomas Winkler free_irq(pdev->irq, dev); 3322703d4b2STomas Winkler pci_disable_msi(pdev); 3332703d4b2STomas Winkler 3347cb035d9STomas Winkler return 0; 3352703d4b2STomas Winkler } 3362703d4b2STomas Winkler 337b68301e9STomas Winkler static int mei_me_pci_resume(struct device *device) 3382703d4b2STomas Winkler { 3392703d4b2STomas Winkler struct pci_dev *pdev = to_pci_dev(device); 3402703d4b2STomas Winkler struct mei_device *dev; 3412703d4b2STomas Winkler int err; 3422703d4b2STomas Winkler 3432703d4b2STomas Winkler dev = pci_get_drvdata(pdev); 3442703d4b2STomas Winkler if (!dev) 3452703d4b2STomas Winkler return -ENODEV; 3462703d4b2STomas Winkler 3472703d4b2STomas Winkler pci_enable_msi(pdev); 3482703d4b2STomas Winkler 3492703d4b2STomas Winkler /* request and enable interrupt */ 3502703d4b2STomas Winkler if (pci_dev_msi_enabled(pdev)) 3512703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 3522703d4b2STomas Winkler NULL, 35306ecd645STomas Winkler mei_me_irq_thread_handler, 3542703d4b2STomas Winkler IRQF_ONESHOT, KBUILD_MODNAME, dev); 3552703d4b2STomas Winkler else 3562703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 35706ecd645STomas Winkler mei_me_irq_quick_handler, 35806ecd645STomas Winkler mei_me_irq_thread_handler, 3592703d4b2STomas Winkler IRQF_SHARED, KBUILD_MODNAME, dev); 3602703d4b2STomas Winkler 3612703d4b2STomas Winkler if (err) { 3622703d4b2STomas Winkler dev_err(&pdev->dev, "request_threaded_irq failed: irq = %d.\n", 3632703d4b2STomas Winkler pdev->irq); 3642703d4b2STomas Winkler return err; 3652703d4b2STomas Winkler } 3662703d4b2STomas Winkler 36733ec0826STomas Winkler err = mei_restart(dev); 36833ec0826STomas Winkler if (err) 36933ec0826STomas Winkler return err; 3702703d4b2STomas Winkler 3712703d4b2STomas Winkler /* Start timer if stopped in suspend */ 3722703d4b2STomas Winkler schedule_delayed_work(&dev->timer_work, HZ); 3732703d4b2STomas Winkler 37433ec0826STomas Winkler return 0; 3752703d4b2STomas Winkler } 376180ea05bSTomas Winkler #endif /* CONFIG_PM_SLEEP */ 37716833257SAlexander Usyskin 378180ea05bSTomas Winkler #ifdef CONFIG_PM_RUNTIME 379180ea05bSTomas Winkler static int mei_me_pm_runtime_idle(struct device *device) 380180ea05bSTomas Winkler { 381180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 382180ea05bSTomas Winkler struct mei_device *dev; 383180ea05bSTomas Winkler 384180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime_idle\n"); 385180ea05bSTomas Winkler 386180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 387180ea05bSTomas Winkler if (!dev) 388180ea05bSTomas Winkler return -ENODEV; 389180ea05bSTomas Winkler if (mei_write_is_idle(dev)) 390180ea05bSTomas Winkler pm_schedule_suspend(device, MEI_ME_RPM_TIMEOUT * 2); 391180ea05bSTomas Winkler 392180ea05bSTomas Winkler return -EBUSY; 393180ea05bSTomas Winkler } 394180ea05bSTomas Winkler 395180ea05bSTomas Winkler static int mei_me_pm_runtime_suspend(struct device *device) 396180ea05bSTomas Winkler { 397180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 398180ea05bSTomas Winkler struct mei_device *dev; 399180ea05bSTomas Winkler int ret; 400180ea05bSTomas Winkler 401180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime suspend\n"); 402180ea05bSTomas Winkler 403180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 404180ea05bSTomas Winkler if (!dev) 405180ea05bSTomas Winkler return -ENODEV; 406180ea05bSTomas Winkler 407180ea05bSTomas Winkler mutex_lock(&dev->device_lock); 408180ea05bSTomas Winkler 409180ea05bSTomas Winkler if (mei_write_is_idle(dev)) 410180ea05bSTomas Winkler ret = mei_me_pg_set_sync(dev); 411180ea05bSTomas Winkler else 412180ea05bSTomas Winkler ret = -EAGAIN; 413180ea05bSTomas Winkler 414180ea05bSTomas Winkler mutex_unlock(&dev->device_lock); 415180ea05bSTomas Winkler 416180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime suspend ret=%d\n", ret); 417180ea05bSTomas Winkler 418180ea05bSTomas Winkler return ret; 419180ea05bSTomas Winkler } 420180ea05bSTomas Winkler 421180ea05bSTomas Winkler static int mei_me_pm_runtime_resume(struct device *device) 422180ea05bSTomas Winkler { 423180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 424180ea05bSTomas Winkler struct mei_device *dev; 425180ea05bSTomas Winkler int ret; 426180ea05bSTomas Winkler 427180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime resume\n"); 428180ea05bSTomas Winkler 429180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 430180ea05bSTomas Winkler if (!dev) 431180ea05bSTomas Winkler return -ENODEV; 432180ea05bSTomas Winkler 433180ea05bSTomas Winkler mutex_lock(&dev->device_lock); 434180ea05bSTomas Winkler 435180ea05bSTomas Winkler ret = mei_me_pg_unset_sync(dev); 436180ea05bSTomas Winkler 437180ea05bSTomas Winkler mutex_unlock(&dev->device_lock); 438180ea05bSTomas Winkler 439180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime resume ret = %d\n", ret); 440180ea05bSTomas Winkler 441180ea05bSTomas Winkler return ret; 442180ea05bSTomas Winkler } 443e13fa90cSTomas Winkler 444e13fa90cSTomas Winkler /** 445e13fa90cSTomas Winkler * mei_me_set_pm_domain - fill and set pm domian stucture for device 446e13fa90cSTomas Winkler * 447e13fa90cSTomas Winkler * @dev: mei_device 448e13fa90cSTomas Winkler */ 449e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev) 450e13fa90cSTomas Winkler { 451e13fa90cSTomas Winkler struct pci_dev *pdev = dev->pdev; 452e13fa90cSTomas Winkler 453e13fa90cSTomas Winkler if (pdev->dev.bus && pdev->dev.bus->pm) { 454e13fa90cSTomas Winkler dev->pg_domain.ops = *pdev->dev.bus->pm; 455e13fa90cSTomas Winkler 456e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_suspend = mei_me_pm_runtime_suspend; 457e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_resume = mei_me_pm_runtime_resume; 458e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_idle = mei_me_pm_runtime_idle; 459e13fa90cSTomas Winkler 460e13fa90cSTomas Winkler pdev->dev.pm_domain = &dev->pg_domain; 461e13fa90cSTomas Winkler } 462e13fa90cSTomas Winkler } 463e13fa90cSTomas Winkler 464e13fa90cSTomas Winkler /** 465e13fa90cSTomas Winkler * mei_me_unset_pm_domain - clean pm domian stucture for device 466e13fa90cSTomas Winkler * 467e13fa90cSTomas Winkler * @dev: mei_device 468e13fa90cSTomas Winkler */ 469e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev) 470e13fa90cSTomas Winkler { 471e13fa90cSTomas Winkler /* stop using pm callbacks if any */ 472e13fa90cSTomas Winkler dev->pdev->dev.pm_domain = NULL; 473e13fa90cSTomas Winkler } 474180ea05bSTomas Winkler #endif /* CONFIG_PM_RUNTIME */ 475180ea05bSTomas Winkler 476180ea05bSTomas Winkler #ifdef CONFIG_PM 477180ea05bSTomas Winkler static const struct dev_pm_ops mei_me_pm_ops = { 478180ea05bSTomas Winkler SET_SYSTEM_SLEEP_PM_OPS(mei_me_pci_suspend, 479180ea05bSTomas Winkler mei_me_pci_resume) 480180ea05bSTomas Winkler SET_RUNTIME_PM_OPS( 481180ea05bSTomas Winkler mei_me_pm_runtime_suspend, 482180ea05bSTomas Winkler mei_me_pm_runtime_resume, 483180ea05bSTomas Winkler mei_me_pm_runtime_idle) 484180ea05bSTomas Winkler }; 485180ea05bSTomas Winkler 486b68301e9STomas Winkler #define MEI_ME_PM_OPS (&mei_me_pm_ops) 4872703d4b2STomas Winkler #else 488b68301e9STomas Winkler #define MEI_ME_PM_OPS NULL 489180ea05bSTomas Winkler #endif /* CONFIG_PM */ 4902703d4b2STomas Winkler /* 4912703d4b2STomas Winkler * PCI driver structure 4922703d4b2STomas Winkler */ 493b68301e9STomas Winkler static struct pci_driver mei_me_driver = { 4942703d4b2STomas Winkler .name = KBUILD_MODNAME, 495b68301e9STomas Winkler .id_table = mei_me_pci_tbl, 496b68301e9STomas Winkler .probe = mei_me_probe, 497b68301e9STomas Winkler .remove = mei_me_remove, 498b68301e9STomas Winkler .shutdown = mei_me_remove, 499b68301e9STomas Winkler .driver.pm = MEI_ME_PM_OPS, 5002703d4b2STomas Winkler }; 5012703d4b2STomas Winkler 502b68301e9STomas Winkler module_pci_driver(mei_me_driver); 5032703d4b2STomas Winkler 5042703d4b2STomas Winkler MODULE_AUTHOR("Intel Corporation"); 5052703d4b2STomas Winkler MODULE_DESCRIPTION("Intel(R) Management Engine Interface"); 5062703d4b2STomas Winkler MODULE_LICENSE("GPL v2"); 507