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[] = { 46f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_82946GZ, MEI_ME_ICH_CFG)}, 47f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_82G35, MEI_ME_ICH_CFG)}, 48f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_82Q965, MEI_ME_ICH_CFG)}, 49f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_82G965, MEI_ME_ICH_CFG)}, 50f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_82GM965, MEI_ME_ICH_CFG)}, 51f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_82GME965, MEI_ME_ICH_CFG)}, 52f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82Q35, MEI_ME_ICH_CFG)}, 53f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82G33, MEI_ME_ICH_CFG)}, 54f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82Q33, MEI_ME_ICH_CFG)}, 55f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82X38, MEI_ME_ICH_CFG)}, 56f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_3200, MEI_ME_ICH_CFG)}, 578d929d48SAlexander Usyskin 58f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_6, MEI_ME_ICH_CFG)}, 59f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_7, MEI_ME_ICH_CFG)}, 60f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_8, MEI_ME_ICH_CFG)}, 61f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_9, MEI_ME_ICH_CFG)}, 62f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_10, MEI_ME_ICH_CFG)}, 63f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_1, MEI_ME_ICH_CFG)}, 64f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_2, MEI_ME_ICH_CFG)}, 65f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_3, MEI_ME_ICH_CFG)}, 66f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_4, MEI_ME_ICH_CFG)}, 678d929d48SAlexander Usyskin 68f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_1, MEI_ME_ICH10_CFG)}, 69f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_2, MEI_ME_ICH10_CFG)}, 70f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_3, MEI_ME_ICH10_CFG)}, 71f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_4, MEI_ME_ICH10_CFG)}, 722703d4b2STomas Winkler 73f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_IBXPK_1, MEI_ME_PCH_CFG)}, 74f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_IBXPK_2, MEI_ME_PCH_CFG)}, 75f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_CPT_1, MEI_ME_PCH_CPT_PBG_CFG)}, 76f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_PBG_1, MEI_ME_PCH_CPT_PBG_CFG)}, 77f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_PPT_1, MEI_ME_PCH_CFG)}, 78f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_PPT_2, MEI_ME_PCH_CFG)}, 79f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_PPT_3, MEI_ME_PCH_CFG)}, 80f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_H, MEI_ME_PCH8_SPS_CFG)}, 81f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_W, MEI_ME_PCH8_SPS_CFG)}, 82f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_LP, MEI_ME_PCH8_CFG)}, 83f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_HR, MEI_ME_PCH8_SPS_CFG)}, 84f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_WPT_LP, MEI_ME_PCH8_CFG)}, 85f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_WPT_LP_2, MEI_ME_PCH8_CFG)}, 861625c7ecSTomas Winkler 87f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_SPT, MEI_ME_PCH8_CFG)}, 88f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_2, MEI_ME_PCH8_CFG)}, 89f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_H, MEI_ME_PCH8_SPS_CFG)}, 90f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_H_2, MEI_ME_PCH8_SPS_CFG)}, 91f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_LBG, MEI_ME_PCH8_CFG)}, 92dd16f6cdSTomas Winkler 93f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_BXT_M, MEI_ME_PCH8_CFG)}, 94f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_APL_I, MEI_ME_PCH8_CFG)}, 95f5ac3c49STomas Winkler 96f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_KBP, MEI_ME_PCH8_CFG)}, 97f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_KBP_2, MEI_ME_PCH8_CFG)}, 98ac182e8aSAlexander Usyskin 992703d4b2STomas Winkler /* required last entry */ 1002703d4b2STomas Winkler {0, } 1012703d4b2STomas Winkler }; 1022703d4b2STomas Winkler 103b68301e9STomas Winkler MODULE_DEVICE_TABLE(pci, mei_me_pci_tbl); 1042703d4b2STomas Winkler 105bbd6d050SRafael J. Wysocki #ifdef CONFIG_PM 106e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev); 107e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev); 108e13fa90cSTomas Winkler #else 109e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev) {} 110e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev) {} 111bbd6d050SRafael J. Wysocki #endif /* CONFIG_PM */ 112e13fa90cSTomas Winkler 1132703d4b2STomas Winkler /** 114ce23139cSAlexander Usyskin * mei_me_quirk_probe - probe for devices that doesn't valid ME interface 115393b148fSMasanari Iida * 1162703d4b2STomas Winkler * @pdev: PCI device structure 117c919951dSTomas Winkler * @cfg: per generation config 1182703d4b2STomas Winkler * 119a8605ea2SAlexander Usyskin * Return: true if ME Interface is valid, false otherwise 1202703d4b2STomas Winkler */ 121b68301e9STomas Winkler static bool mei_me_quirk_probe(struct pci_dev *pdev, 122c919951dSTomas Winkler const struct mei_cfg *cfg) 1232703d4b2STomas Winkler { 124c919951dSTomas Winkler if (cfg->quirk_probe && cfg->quirk_probe(pdev)) { 1252703d4b2STomas Winkler dev_info(&pdev->dev, "Device doesn't have valid ME Interface\n"); 1262703d4b2STomas Winkler return false; 1272703d4b2STomas Winkler } 128c919951dSTomas Winkler 129c919951dSTomas Winkler return true; 130c919951dSTomas Winkler } 131c919951dSTomas Winkler 1322703d4b2STomas Winkler /** 133ce23139cSAlexander Usyskin * mei_me_probe - Device Initialization Routine 1342703d4b2STomas Winkler * 1352703d4b2STomas Winkler * @pdev: PCI device structure 1362703d4b2STomas Winkler * @ent: entry in kcs_pci_tbl 1372703d4b2STomas Winkler * 138a8605ea2SAlexander Usyskin * Return: 0 on success, <0 on failure. 1392703d4b2STomas Winkler */ 140b68301e9STomas Winkler static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 1412703d4b2STomas Winkler { 142f5ac3c49STomas Winkler const struct mei_cfg *cfg; 1432703d4b2STomas Winkler struct mei_device *dev; 14452c34561STomas Winkler struct mei_me_hw *hw; 1451fa55b4eSAlexander Usyskin unsigned int irqflags; 1462703d4b2STomas Winkler int err; 1472703d4b2STomas Winkler 148f5ac3c49STomas Winkler cfg = mei_me_get_cfg(ent->driver_data); 149f5ac3c49STomas Winkler if (!cfg) 150f5ac3c49STomas Winkler return -ENODEV; 1512703d4b2STomas Winkler 152c919951dSTomas Winkler if (!mei_me_quirk_probe(pdev, cfg)) 153c919951dSTomas Winkler return -ENODEV; 1542703d4b2STomas Winkler 1552703d4b2STomas Winkler /* enable pci dev */ 156f8a09605STomas Winkler err = pcim_enable_device(pdev); 1572703d4b2STomas Winkler if (err) { 1582703d4b2STomas Winkler dev_err(&pdev->dev, "failed to enable pci device.\n"); 1592703d4b2STomas Winkler goto end; 1602703d4b2STomas Winkler } 1612703d4b2STomas Winkler /* set PCI host mastering */ 1622703d4b2STomas Winkler pci_set_master(pdev); 163f8a09605STomas Winkler /* pci request regions and mapping IO device memory for mei driver */ 164f8a09605STomas Winkler err = pcim_iomap_regions(pdev, BIT(0), KBUILD_MODNAME); 1652703d4b2STomas Winkler if (err) { 1662703d4b2STomas Winkler dev_err(&pdev->dev, "failed to get pci regions.\n"); 167f8a09605STomas Winkler goto end; 1682703d4b2STomas Winkler } 1693ecfb168STomas Winkler 1703ecfb168STomas Winkler if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) || 1713ecfb168STomas Winkler dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) { 1723ecfb168STomas Winkler 1733ecfb168STomas Winkler err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); 1743ecfb168STomas Winkler if (err) 1753ecfb168STomas Winkler err = dma_set_coherent_mask(&pdev->dev, 1763ecfb168STomas Winkler DMA_BIT_MASK(32)); 1773ecfb168STomas Winkler } 1783ecfb168STomas Winkler if (err) { 1793ecfb168STomas Winkler dev_err(&pdev->dev, "No usable DMA configuration, aborting\n"); 180f8a09605STomas Winkler goto end; 1813ecfb168STomas Winkler } 1823ecfb168STomas Winkler 1832703d4b2STomas Winkler /* allocates and initializes the mei dev structure */ 1848d929d48SAlexander Usyskin dev = mei_me_dev_init(pdev, cfg); 1852703d4b2STomas Winkler if (!dev) { 1862703d4b2STomas Winkler err = -ENOMEM; 187f8a09605STomas Winkler goto end; 1882703d4b2STomas Winkler } 18952c34561STomas Winkler hw = to_me_hw(dev); 190f8a09605STomas Winkler hw->mem_addr = pcim_iomap_table(pdev)[0]; 191f8a09605STomas Winkler 1922703d4b2STomas Winkler pci_enable_msi(pdev); 1932703d4b2STomas Winkler 1942703d4b2STomas Winkler /* request and enable interrupt */ 1951fa55b4eSAlexander Usyskin irqflags = pci_dev_msi_enabled(pdev) ? IRQF_ONESHOT : IRQF_SHARED; 1961fa55b4eSAlexander Usyskin 1972703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 19806ecd645STomas Winkler mei_me_irq_quick_handler, 19906ecd645STomas Winkler mei_me_irq_thread_handler, 2001fa55b4eSAlexander Usyskin irqflags, KBUILD_MODNAME, dev); 2012703d4b2STomas Winkler if (err) { 2022703d4b2STomas Winkler dev_err(&pdev->dev, "request_threaded_irq failure. irq = %d\n", 2032703d4b2STomas Winkler pdev->irq); 204f8a09605STomas Winkler goto end; 2052703d4b2STomas Winkler } 2062703d4b2STomas Winkler 207c4d589beSTomas Winkler if (mei_start(dev)) { 2082703d4b2STomas Winkler dev_err(&pdev->dev, "init hw failure.\n"); 2092703d4b2STomas Winkler err = -ENODEV; 2102703d4b2STomas Winkler goto release_irq; 2112703d4b2STomas Winkler } 2122703d4b2STomas Winkler 213180ea05bSTomas Winkler pm_runtime_set_autosuspend_delay(&pdev->dev, MEI_ME_RPM_TIMEOUT); 214180ea05bSTomas Winkler pm_runtime_use_autosuspend(&pdev->dev); 215180ea05bSTomas Winkler 216f3d8e878SAlexander Usyskin err = mei_register(dev, &pdev->dev); 2172703d4b2STomas Winkler if (err) 2181f7e489aSAlexander Usyskin goto stop; 2192703d4b2STomas Winkler 2202703d4b2STomas Winkler pci_set_drvdata(pdev, dev); 2212703d4b2STomas Winkler 222e13fa90cSTomas Winkler /* 223e13fa90cSTomas Winkler * For not wake-able HW runtime pm framework 224e13fa90cSTomas Winkler * can't be used on pci device level. 225e13fa90cSTomas Winkler * Use domain runtime pm callbacks instead. 226e13fa90cSTomas Winkler */ 227e13fa90cSTomas Winkler if (!pci_dev_run_wake(pdev)) 228e13fa90cSTomas Winkler mei_me_set_pm_domain(dev); 229e13fa90cSTomas Winkler 230180ea05bSTomas Winkler if (mei_pg_is_enabled(dev)) 231180ea05bSTomas Winkler pm_runtime_put_noidle(&pdev->dev); 232180ea05bSTomas Winkler 233c4e87b52SAlexander Usyskin dev_dbg(&pdev->dev, "initialization successful.\n"); 2342703d4b2STomas Winkler 2352703d4b2STomas Winkler return 0; 2362703d4b2STomas Winkler 2371f7e489aSAlexander Usyskin stop: 2381f7e489aSAlexander Usyskin mei_stop(dev); 2392703d4b2STomas Winkler release_irq: 240dc844b0dSTomas Winkler mei_cancel_work(dev); 2412703d4b2STomas Winkler mei_disable_interrupts(dev); 2422703d4b2STomas Winkler free_irq(pdev->irq, dev); 2432703d4b2STomas Winkler end: 2442703d4b2STomas Winkler dev_err(&pdev->dev, "initialization failed.\n"); 2452703d4b2STomas Winkler return err; 2462703d4b2STomas Winkler } 2472703d4b2STomas Winkler 2482703d4b2STomas Winkler /** 2495c4c0106STomas Winkler * mei_me_shutdown - Device Removal Routine 2505c4c0106STomas Winkler * 2515c4c0106STomas Winkler * @pdev: PCI device structure 2525c4c0106STomas Winkler * 2535c4c0106STomas Winkler * mei_me_shutdown is called from the reboot notifier 2545c4c0106STomas Winkler * it's a simplified version of remove so we go down 2555c4c0106STomas Winkler * faster. 2565c4c0106STomas Winkler */ 2575c4c0106STomas Winkler static void mei_me_shutdown(struct pci_dev *pdev) 2585c4c0106STomas Winkler { 2595c4c0106STomas Winkler struct mei_device *dev; 2605c4c0106STomas Winkler 2615c4c0106STomas Winkler dev = pci_get_drvdata(pdev); 2625c4c0106STomas Winkler if (!dev) 2635c4c0106STomas Winkler return; 2645c4c0106STomas Winkler 2655c4c0106STomas Winkler dev_dbg(&pdev->dev, "shutdown\n"); 2665c4c0106STomas Winkler mei_stop(dev); 2675c4c0106STomas Winkler 2685c4c0106STomas Winkler if (!pci_dev_run_wake(pdev)) 2695c4c0106STomas Winkler mei_me_unset_pm_domain(dev); 2705c4c0106STomas Winkler 2715c4c0106STomas Winkler mei_disable_interrupts(dev); 2725c4c0106STomas Winkler free_irq(pdev->irq, dev); 2735c4c0106STomas Winkler } 2745c4c0106STomas Winkler 2755c4c0106STomas Winkler /** 276ce23139cSAlexander Usyskin * mei_me_remove - Device Removal Routine 2772703d4b2STomas Winkler * 2782703d4b2STomas Winkler * @pdev: PCI device structure 2792703d4b2STomas Winkler * 2805c4c0106STomas Winkler * mei_me_remove is called by the PCI subsystem to alert the driver 2812703d4b2STomas Winkler * that it should release a PCI device. 2822703d4b2STomas Winkler */ 283b68301e9STomas Winkler static void mei_me_remove(struct pci_dev *pdev) 2842703d4b2STomas Winkler { 2852703d4b2STomas Winkler struct mei_device *dev; 2862703d4b2STomas Winkler 2872703d4b2STomas Winkler dev = pci_get_drvdata(pdev); 2882703d4b2STomas Winkler if (!dev) 2892703d4b2STomas Winkler return; 2902703d4b2STomas Winkler 291180ea05bSTomas Winkler if (mei_pg_is_enabled(dev)) 292180ea05bSTomas Winkler pm_runtime_get_noresume(&pdev->dev); 293180ea05bSTomas Winkler 294ed6f7ac1SPaul Bolle dev_dbg(&pdev->dev, "stop\n"); 2957cb035d9STomas Winkler mei_stop(dev); 2962703d4b2STomas Winkler 297e13fa90cSTomas Winkler if (!pci_dev_run_wake(pdev)) 298e13fa90cSTomas Winkler mei_me_unset_pm_domain(dev); 299e13fa90cSTomas Winkler 3002703d4b2STomas Winkler mei_disable_interrupts(dev); 3012703d4b2STomas Winkler 3022703d4b2STomas Winkler free_irq(pdev->irq, dev); 3032703d4b2STomas Winkler 30430e53bb8STomas Winkler mei_deregister(dev); 3052703d4b2STomas Winkler } 306f8a09605STomas Winkler 30716833257SAlexander Usyskin #ifdef CONFIG_PM_SLEEP 308b68301e9STomas Winkler static int mei_me_pci_suspend(struct device *device) 3092703d4b2STomas Winkler { 3102703d4b2STomas Winkler struct pci_dev *pdev = to_pci_dev(device); 3112703d4b2STomas Winkler struct mei_device *dev = pci_get_drvdata(pdev); 3122703d4b2STomas Winkler 3132703d4b2STomas Winkler if (!dev) 3142703d4b2STomas Winkler return -ENODEV; 3152703d4b2STomas Winkler 316ed6f7ac1SPaul Bolle dev_dbg(&pdev->dev, "suspend\n"); 3172703d4b2STomas Winkler 3187cb035d9STomas Winkler mei_stop(dev); 3197cb035d9STomas Winkler 3207cb035d9STomas Winkler mei_disable_interrupts(dev); 3212703d4b2STomas Winkler 3222703d4b2STomas Winkler free_irq(pdev->irq, dev); 3232703d4b2STomas Winkler pci_disable_msi(pdev); 3242703d4b2STomas Winkler 3257cb035d9STomas Winkler return 0; 3262703d4b2STomas Winkler } 3272703d4b2STomas Winkler 328b68301e9STomas Winkler static int mei_me_pci_resume(struct device *device) 3292703d4b2STomas Winkler { 3302703d4b2STomas Winkler struct pci_dev *pdev = to_pci_dev(device); 3312703d4b2STomas Winkler struct mei_device *dev; 3321fa55b4eSAlexander Usyskin unsigned int irqflags; 3332703d4b2STomas Winkler int err; 3342703d4b2STomas Winkler 3352703d4b2STomas Winkler dev = pci_get_drvdata(pdev); 3362703d4b2STomas Winkler if (!dev) 3372703d4b2STomas Winkler return -ENODEV; 3382703d4b2STomas Winkler 3392703d4b2STomas Winkler pci_enable_msi(pdev); 3402703d4b2STomas Winkler 3411fa55b4eSAlexander Usyskin irqflags = pci_dev_msi_enabled(pdev) ? IRQF_ONESHOT : IRQF_SHARED; 3421fa55b4eSAlexander Usyskin 3432703d4b2STomas Winkler /* request and enable interrupt */ 3442703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 34506ecd645STomas Winkler mei_me_irq_quick_handler, 34606ecd645STomas Winkler mei_me_irq_thread_handler, 3471fa55b4eSAlexander Usyskin irqflags, KBUILD_MODNAME, dev); 3482703d4b2STomas Winkler 3492703d4b2STomas Winkler if (err) { 3502703d4b2STomas Winkler dev_err(&pdev->dev, "request_threaded_irq failed: irq = %d.\n", 3512703d4b2STomas Winkler pdev->irq); 3522703d4b2STomas Winkler return err; 3532703d4b2STomas Winkler } 3542703d4b2STomas Winkler 35533ec0826STomas Winkler err = mei_restart(dev); 35633ec0826STomas Winkler if (err) 35733ec0826STomas Winkler return err; 3582703d4b2STomas Winkler 3592703d4b2STomas Winkler /* Start timer if stopped in suspend */ 3602703d4b2STomas Winkler schedule_delayed_work(&dev->timer_work, HZ); 3612703d4b2STomas Winkler 36233ec0826STomas Winkler return 0; 3632703d4b2STomas Winkler } 364180ea05bSTomas Winkler #endif /* CONFIG_PM_SLEEP */ 36516833257SAlexander Usyskin 366bbd6d050SRafael J. Wysocki #ifdef CONFIG_PM 367180ea05bSTomas Winkler static int mei_me_pm_runtime_idle(struct device *device) 368180ea05bSTomas Winkler { 369180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 370180ea05bSTomas Winkler struct mei_device *dev; 371180ea05bSTomas Winkler 372180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime_idle\n"); 373180ea05bSTomas Winkler 374180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 375180ea05bSTomas Winkler if (!dev) 376180ea05bSTomas Winkler return -ENODEV; 377180ea05bSTomas Winkler if (mei_write_is_idle(dev)) 378d5d83f8aSAlexander Usyskin pm_runtime_autosuspend(device); 379180ea05bSTomas Winkler 380180ea05bSTomas Winkler return -EBUSY; 381180ea05bSTomas Winkler } 382180ea05bSTomas Winkler 383180ea05bSTomas Winkler static int mei_me_pm_runtime_suspend(struct device *device) 384180ea05bSTomas Winkler { 385180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 386180ea05bSTomas Winkler struct mei_device *dev; 387180ea05bSTomas Winkler int ret; 388180ea05bSTomas Winkler 389180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime suspend\n"); 390180ea05bSTomas Winkler 391180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 392180ea05bSTomas Winkler if (!dev) 393180ea05bSTomas Winkler return -ENODEV; 394180ea05bSTomas Winkler 395180ea05bSTomas Winkler mutex_lock(&dev->device_lock); 396180ea05bSTomas Winkler 397180ea05bSTomas Winkler if (mei_write_is_idle(dev)) 3982d1995fcSAlexander Usyskin ret = mei_me_pg_enter_sync(dev); 399180ea05bSTomas Winkler else 400180ea05bSTomas Winkler ret = -EAGAIN; 401180ea05bSTomas Winkler 402180ea05bSTomas Winkler mutex_unlock(&dev->device_lock); 403180ea05bSTomas Winkler 404180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime suspend ret=%d\n", ret); 405180ea05bSTomas Winkler 40677537ad2SAlexander Usyskin if (ret && ret != -EAGAIN) 40777537ad2SAlexander Usyskin schedule_work(&dev->reset_work); 40877537ad2SAlexander Usyskin 409180ea05bSTomas Winkler return ret; 410180ea05bSTomas Winkler } 411180ea05bSTomas Winkler 412180ea05bSTomas Winkler static int mei_me_pm_runtime_resume(struct device *device) 413180ea05bSTomas Winkler { 414180ea05bSTomas Winkler struct pci_dev *pdev = to_pci_dev(device); 415180ea05bSTomas Winkler struct mei_device *dev; 416180ea05bSTomas Winkler int ret; 417180ea05bSTomas Winkler 418180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime resume\n"); 419180ea05bSTomas Winkler 420180ea05bSTomas Winkler dev = pci_get_drvdata(pdev); 421180ea05bSTomas Winkler if (!dev) 422180ea05bSTomas Winkler return -ENODEV; 423180ea05bSTomas Winkler 424180ea05bSTomas Winkler mutex_lock(&dev->device_lock); 425180ea05bSTomas Winkler 4262d1995fcSAlexander Usyskin ret = mei_me_pg_exit_sync(dev); 427180ea05bSTomas Winkler 428180ea05bSTomas Winkler mutex_unlock(&dev->device_lock); 429180ea05bSTomas Winkler 430180ea05bSTomas Winkler dev_dbg(&pdev->dev, "rpm: me: runtime resume ret = %d\n", ret); 431180ea05bSTomas Winkler 43277537ad2SAlexander Usyskin if (ret) 43377537ad2SAlexander Usyskin schedule_work(&dev->reset_work); 43477537ad2SAlexander Usyskin 435180ea05bSTomas Winkler return ret; 436180ea05bSTomas Winkler } 437e13fa90cSTomas Winkler 438e13fa90cSTomas Winkler /** 4397efceb55SGeert Uytterhoeven * mei_me_set_pm_domain - fill and set pm domain structure for device 440e13fa90cSTomas Winkler * 441e13fa90cSTomas Winkler * @dev: mei_device 442e13fa90cSTomas Winkler */ 443e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev) 444e13fa90cSTomas Winkler { 445d08b8fc0STomas Winkler struct pci_dev *pdev = to_pci_dev(dev->dev); 446e13fa90cSTomas Winkler 447e13fa90cSTomas Winkler if (pdev->dev.bus && pdev->dev.bus->pm) { 448e13fa90cSTomas Winkler dev->pg_domain.ops = *pdev->dev.bus->pm; 449e13fa90cSTomas Winkler 450e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_suspend = mei_me_pm_runtime_suspend; 451e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_resume = mei_me_pm_runtime_resume; 452e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_idle = mei_me_pm_runtime_idle; 453e13fa90cSTomas Winkler 454989561deSTomeu Vizoso dev_pm_domain_set(&pdev->dev, &dev->pg_domain); 455e13fa90cSTomas Winkler } 456e13fa90cSTomas Winkler } 457e13fa90cSTomas Winkler 458e13fa90cSTomas Winkler /** 4597efceb55SGeert Uytterhoeven * mei_me_unset_pm_domain - clean pm domain structure for device 460e13fa90cSTomas Winkler * 461e13fa90cSTomas Winkler * @dev: mei_device 462e13fa90cSTomas Winkler */ 463e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev) 464e13fa90cSTomas Winkler { 465e13fa90cSTomas Winkler /* stop using pm callbacks if any */ 466989561deSTomeu Vizoso dev_pm_domain_set(dev->dev, NULL); 467e13fa90cSTomas Winkler } 468180ea05bSTomas Winkler 469180ea05bSTomas Winkler static const struct dev_pm_ops mei_me_pm_ops = { 470180ea05bSTomas Winkler SET_SYSTEM_SLEEP_PM_OPS(mei_me_pci_suspend, 471180ea05bSTomas Winkler mei_me_pci_resume) 472180ea05bSTomas Winkler SET_RUNTIME_PM_OPS( 473180ea05bSTomas Winkler mei_me_pm_runtime_suspend, 474180ea05bSTomas Winkler mei_me_pm_runtime_resume, 475180ea05bSTomas Winkler mei_me_pm_runtime_idle) 476180ea05bSTomas Winkler }; 477180ea05bSTomas Winkler 478b68301e9STomas Winkler #define MEI_ME_PM_OPS (&mei_me_pm_ops) 4792703d4b2STomas Winkler #else 480b68301e9STomas Winkler #define MEI_ME_PM_OPS NULL 481180ea05bSTomas Winkler #endif /* CONFIG_PM */ 4822703d4b2STomas Winkler /* 4832703d4b2STomas Winkler * PCI driver structure 4842703d4b2STomas Winkler */ 485b68301e9STomas Winkler static struct pci_driver mei_me_driver = { 4862703d4b2STomas Winkler .name = KBUILD_MODNAME, 487b68301e9STomas Winkler .id_table = mei_me_pci_tbl, 488b68301e9STomas Winkler .probe = mei_me_probe, 489b68301e9STomas Winkler .remove = mei_me_remove, 4905c4c0106STomas Winkler .shutdown = mei_me_shutdown, 491b68301e9STomas Winkler .driver.pm = MEI_ME_PM_OPS, 49267de6bf1SAlexander Usyskin .driver.probe_type = PROBE_PREFER_ASYNCHRONOUS, 4932703d4b2STomas Winkler }; 4942703d4b2STomas Winkler 495b68301e9STomas Winkler module_pci_driver(mei_me_driver); 4962703d4b2STomas Winkler 4972703d4b2STomas Winkler MODULE_AUTHOR("Intel Corporation"); 4982703d4b2STomas Winkler MODULE_DESCRIPTION("Intel(R) Management Engine Interface"); 4992703d4b2STomas Winkler MODULE_LICENSE("GPL v2"); 500