19fff0425STomas Winkler // SPDX-License-Identifier: GPL-2.0 22703d4b2STomas Winkler /* 3a27ad0f7STomas Winkler * Copyright (c) 2003-2020, Intel Corporation. All rights reserved. 42703d4b2STomas Winkler * Intel Management Engine Interface (Intel MEI) Linux driver 52703d4b2STomas Winkler */ 69fff0425STomas Winkler 72703d4b2STomas Winkler #include <linux/module.h> 82703d4b2STomas Winkler #include <linux/kernel.h> 92703d4b2STomas Winkler #include <linux/device.h> 102703d4b2STomas Winkler #include <linux/errno.h> 112703d4b2STomas Winkler #include <linux/types.h> 122703d4b2STomas Winkler #include <linux/pci.h> 132703d4b2STomas Winkler #include <linux/sched.h> 142703d4b2STomas Winkler #include <linux/interrupt.h> 152703d4b2STomas Winkler 16989561deSTomeu Vizoso #include <linux/pm_domain.h> 17180ea05bSTomas Winkler #include <linux/pm_runtime.h> 18180ea05bSTomas Winkler 192703d4b2STomas Winkler #include <linux/mei.h> 202703d4b2STomas Winkler 212703d4b2STomas Winkler #include "mei_dev.h" 222703d4b2STomas Winkler #include "client.h" 236e4cd27aSTomas Winkler #include "hw-me-regs.h" 246e4cd27aSTomas Winkler #include "hw-me.h" 252703d4b2STomas Winkler 262703d4b2STomas Winkler /* mei_pci_tbl - PCI Device ID Table */ 27a05f8f86STomas Winkler static const struct pci_device_id mei_me_pci_tbl[] = { 28f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_82946GZ, MEI_ME_ICH_CFG)}, 29f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_82G35, MEI_ME_ICH_CFG)}, 30f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_82Q965, MEI_ME_ICH_CFG)}, 31f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_82G965, MEI_ME_ICH_CFG)}, 32f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_82GM965, MEI_ME_ICH_CFG)}, 33f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_82GME965, MEI_ME_ICH_CFG)}, 34f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82Q35, MEI_ME_ICH_CFG)}, 35f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82G33, MEI_ME_ICH_CFG)}, 36f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82Q33, MEI_ME_ICH_CFG)}, 37f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_82X38, MEI_ME_ICH_CFG)}, 38f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_3200, MEI_ME_ICH_CFG)}, 398d929d48SAlexander Usyskin 40f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_6, MEI_ME_ICH_CFG)}, 41f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_7, MEI_ME_ICH_CFG)}, 42f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_8, MEI_ME_ICH_CFG)}, 43f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_9, MEI_ME_ICH_CFG)}, 44f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9_10, MEI_ME_ICH_CFG)}, 45f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_1, MEI_ME_ICH_CFG)}, 46f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_2, MEI_ME_ICH_CFG)}, 47f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_3, MEI_ME_ICH_CFG)}, 48f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH9M_4, MEI_ME_ICH_CFG)}, 498d929d48SAlexander Usyskin 50f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_1, MEI_ME_ICH10_CFG)}, 51f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_2, MEI_ME_ICH10_CFG)}, 52f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_3, MEI_ME_ICH10_CFG)}, 53f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICH10_4, MEI_ME_ICH10_CFG)}, 542703d4b2STomas Winkler 55f8204f0dSAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_IBXPK_1, MEI_ME_PCH6_CFG)}, 56f8204f0dSAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_IBXPK_2, MEI_ME_PCH6_CFG)}, 57f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_CPT_1, MEI_ME_PCH_CPT_PBG_CFG)}, 58f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_PBG_1, MEI_ME_PCH_CPT_PBG_CFG)}, 59f8204f0dSAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_PPT_1, MEI_ME_PCH7_CFG)}, 60f8204f0dSAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_PPT_2, MEI_ME_PCH7_CFG)}, 61f8204f0dSAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_PPT_3, MEI_ME_PCH7_CFG)}, 62f76d77f5STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_H, MEI_ME_PCH8_SPS_4_CFG)}, 63f76d77f5STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_W, MEI_ME_PCH8_SPS_4_CFG)}, 64f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_LP, MEI_ME_PCH8_CFG)}, 65f76d77f5STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_LPT_HR, MEI_ME_PCH8_SPS_4_CFG)}, 66f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_WPT_LP, MEI_ME_PCH8_CFG)}, 67f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_WPT_LP_2, MEI_ME_PCH8_CFG)}, 681625c7ecSTomas Winkler 69f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_SPT, MEI_ME_PCH8_CFG)}, 70f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_2, MEI_ME_PCH8_CFG)}, 712f79d3d1SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_3, MEI_ME_PCH8_ITOUCH_CFG)}, 72f76d77f5STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_H, MEI_ME_PCH8_SPS_4_CFG)}, 73f76d77f5STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_H_2, MEI_ME_PCH8_SPS_4_CFG)}, 74f76d77f5STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_LBG, MEI_ME_PCH12_SPS_4_CFG)}, 75dd16f6cdSTomas Winkler 76f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_BXT_M, MEI_ME_PCH8_CFG)}, 77f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_APL_I, MEI_ME_PCH8_CFG)}, 78f5ac3c49STomas Winkler 79f7ee8eadSTomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_DNV_IE, MEI_ME_PCH8_CFG)}, 80f7ee8eadSTomas Winkler 81688cb678STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_GLK, MEI_ME_PCH8_CFG)}, 82688cb678STomas Winkler 83f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_KBP, MEI_ME_PCH8_CFG)}, 84f5ac3c49STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_KBP_2, MEI_ME_PCH8_CFG)}, 854afc339eSTomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_KBP_3, MEI_ME_PCH8_CFG)}, 86ac182e8aSAlexander Usyskin 871dbfe7f2SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_CNP_LP, MEI_ME_PCH12_CFG)}, 882f79d3d1SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_CNP_LP_3, MEI_ME_PCH8_ITOUCH_CFG)}, 89f76d77f5STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_CNP_H, MEI_ME_PCH12_SPS_CFG)}, 902f79d3d1SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_CNP_H_3, MEI_ME_PCH12_SPS_ITOUCH_CFG)}, 91f8f4aa68SAlexander Usyskin 924d86dfd3STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_CMP_LP, MEI_ME_PCH12_CFG)}, 932f79d3d1SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_CMP_LP_3, MEI_ME_PCH8_ITOUCH_CFG)}, 9482b29b9fSAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_CMP_V, MEI_ME_PCH12_CFG)}, 95559e575aSTomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_CMP_H, MEI_ME_PCH12_CFG)}, 962f79d3d1SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_CMP_H_3, MEI_ME_PCH8_ITOUCH_CFG)}, 974d86dfd3STomas Winkler 98efe814e9STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ICP_LP, MEI_ME_PCH12_CFG)}, 99*75c10c5eSAndy Shevchenko {MEI_PCI_DEVICE(MEI_DEV_ID_ICP_N, MEI_ME_PCH12_CFG)}, 100efe814e9STomas Winkler 10152f6efdfSAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_TGP_LP, MEI_ME_PCH15_CFG)}, 1028c289ea0SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_TGP_H, MEI_ME_PCH15_SPS_CFG)}, 103587f1740STomas Winkler 1040db4a15dSTomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_JSP_N, MEI_ME_PCH15_CFG)}, 1050db4a15dSTomas Winkler 10652f6efdfSAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_MCC, MEI_ME_PCH15_CFG)}, 1071be8624aSAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_MCC_4, MEI_ME_PCH8_CFG)}, 1081be8624aSAlexander Usyskin 10999397d33SAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_CDF, MEI_ME_PCH8_CFG)}, 11099397d33SAlexander Usyskin 111372726cbSTomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_EBG, MEI_ME_PCH15_SPS_CFG)}, 112372726cbSTomas Winkler 113f7545efaSAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ADP_S, MEI_ME_PCH15_CFG)}, 114930c922aSAlexander Usyskin {MEI_PCI_DEVICE(MEI_DEV_ID_ADP_LP, MEI_ME_PCH15_CFG)}, 1150df74278STomas Winkler {MEI_PCI_DEVICE(MEI_DEV_ID_ADP_P, MEI_ME_PCH15_CFG)}, 116f7545efaSAlexander Usyskin 1172703d4b2STomas Winkler /* required last entry */ 1182703d4b2STomas Winkler {0, } 1192703d4b2STomas Winkler }; 1202703d4b2STomas Winkler 121b68301e9STomas Winkler MODULE_DEVICE_TABLE(pci, mei_me_pci_tbl); 1222703d4b2STomas Winkler 123bbd6d050SRafael J. Wysocki #ifdef CONFIG_PM 124e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev); 125e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev); 126e13fa90cSTomas Winkler #else 127e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev) {} 128e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev) {} 129bbd6d050SRafael J. Wysocki #endif /* CONFIG_PM */ 130e13fa90cSTomas Winkler 131261e071aSTomas Winkler static int mei_me_read_fws(const struct mei_device *dev, int where, u32 *val) 132261e071aSTomas Winkler { 133261e071aSTomas Winkler struct pci_dev *pdev = to_pci_dev(dev->dev); 134261e071aSTomas Winkler 135261e071aSTomas Winkler return pci_read_config_dword(pdev, where, val); 136261e071aSTomas Winkler } 137261e071aSTomas Winkler 1382703d4b2STomas Winkler /** 139ce23139cSAlexander Usyskin * mei_me_quirk_probe - probe for devices that doesn't valid ME interface 140393b148fSMasanari Iida * 1412703d4b2STomas Winkler * @pdev: PCI device structure 142c919951dSTomas Winkler * @cfg: per generation config 1432703d4b2STomas Winkler * 144a8605ea2SAlexander Usyskin * Return: true if ME Interface is valid, false otherwise 1452703d4b2STomas Winkler */ 146b68301e9STomas Winkler static bool mei_me_quirk_probe(struct pci_dev *pdev, 147c919951dSTomas Winkler const struct mei_cfg *cfg) 1482703d4b2STomas Winkler { 149c919951dSTomas Winkler if (cfg->quirk_probe && cfg->quirk_probe(pdev)) { 1502703d4b2STomas Winkler dev_info(&pdev->dev, "Device doesn't have valid ME Interface\n"); 1512703d4b2STomas Winkler return false; 1522703d4b2STomas Winkler } 153c919951dSTomas Winkler 154c919951dSTomas Winkler return true; 155c919951dSTomas Winkler } 156c919951dSTomas Winkler 1572703d4b2STomas Winkler /** 158ce23139cSAlexander Usyskin * mei_me_probe - Device Initialization Routine 1592703d4b2STomas Winkler * 1602703d4b2STomas Winkler * @pdev: PCI device structure 1612703d4b2STomas Winkler * @ent: entry in kcs_pci_tbl 1622703d4b2STomas Winkler * 163a8605ea2SAlexander Usyskin * Return: 0 on success, <0 on failure. 1642703d4b2STomas Winkler */ 165b68301e9STomas Winkler static int mei_me_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 1662703d4b2STomas Winkler { 167f5ac3c49STomas Winkler const struct mei_cfg *cfg; 1682703d4b2STomas Winkler struct mei_device *dev; 16952c34561STomas Winkler struct mei_me_hw *hw; 1701fa55b4eSAlexander Usyskin unsigned int irqflags; 1712703d4b2STomas Winkler int err; 1722703d4b2STomas Winkler 173f5ac3c49STomas Winkler cfg = mei_me_get_cfg(ent->driver_data); 174f5ac3c49STomas Winkler if (!cfg) 175f5ac3c49STomas Winkler return -ENODEV; 1762703d4b2STomas Winkler 177c919951dSTomas Winkler if (!mei_me_quirk_probe(pdev, cfg)) 178c919951dSTomas Winkler return -ENODEV; 1792703d4b2STomas Winkler 1802703d4b2STomas Winkler /* enable pci dev */ 181f8a09605STomas Winkler err = pcim_enable_device(pdev); 1822703d4b2STomas Winkler if (err) { 1832703d4b2STomas Winkler dev_err(&pdev->dev, "failed to enable pci device.\n"); 1842703d4b2STomas Winkler goto end; 1852703d4b2STomas Winkler } 1862703d4b2STomas Winkler /* set PCI host mastering */ 1872703d4b2STomas Winkler pci_set_master(pdev); 188f8a09605STomas Winkler /* pci request regions and mapping IO device memory for mei driver */ 189f8a09605STomas Winkler err = pcim_iomap_regions(pdev, BIT(0), KBUILD_MODNAME); 1902703d4b2STomas Winkler if (err) { 1912703d4b2STomas Winkler dev_err(&pdev->dev, "failed to get pci regions.\n"); 192f8a09605STomas Winkler goto end; 1932703d4b2STomas Winkler } 1943ecfb168STomas Winkler 1953ecfb168STomas Winkler if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) || 1963ecfb168STomas Winkler dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) { 1973ecfb168STomas Winkler 1983ecfb168STomas Winkler err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); 1993ecfb168STomas Winkler if (err) 2003ecfb168STomas Winkler err = dma_set_coherent_mask(&pdev->dev, 2013ecfb168STomas Winkler DMA_BIT_MASK(32)); 2023ecfb168STomas Winkler } 2033ecfb168STomas Winkler if (err) { 2043ecfb168STomas Winkler dev_err(&pdev->dev, "No usable DMA configuration, aborting\n"); 205f8a09605STomas Winkler goto end; 2063ecfb168STomas Winkler } 2073ecfb168STomas Winkler 2082703d4b2STomas Winkler /* allocates and initializes the mei dev structure */ 209907b471cSTomas Winkler dev = mei_me_dev_init(&pdev->dev, cfg); 2102703d4b2STomas Winkler if (!dev) { 2112703d4b2STomas Winkler err = -ENOMEM; 212f8a09605STomas Winkler goto end; 2132703d4b2STomas Winkler } 21452c34561STomas Winkler hw = to_me_hw(dev); 215f8a09605STomas Winkler hw->mem_addr = pcim_iomap_table(pdev)[0]; 216261e071aSTomas Winkler hw->read_fws = mei_me_read_fws; 217f8a09605STomas Winkler 2182703d4b2STomas Winkler pci_enable_msi(pdev); 2192703d4b2STomas Winkler 220fec874a8SBenjamin Lee hw->irq = pdev->irq; 221fec874a8SBenjamin Lee 2222703d4b2STomas Winkler /* request and enable interrupt */ 2231fa55b4eSAlexander Usyskin irqflags = pci_dev_msi_enabled(pdev) ? IRQF_ONESHOT : IRQF_SHARED; 2241fa55b4eSAlexander Usyskin 2252703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 22606ecd645STomas Winkler mei_me_irq_quick_handler, 22706ecd645STomas Winkler mei_me_irq_thread_handler, 2281fa55b4eSAlexander Usyskin irqflags, KBUILD_MODNAME, dev); 2292703d4b2STomas Winkler if (err) { 2302703d4b2STomas Winkler dev_err(&pdev->dev, "request_threaded_irq failure. irq = %d\n", 2312703d4b2STomas Winkler pdev->irq); 232f8a09605STomas Winkler goto end; 2332703d4b2STomas Winkler } 2342703d4b2STomas Winkler 235c4d589beSTomas Winkler if (mei_start(dev)) { 2362703d4b2STomas Winkler dev_err(&pdev->dev, "init hw failure.\n"); 2372703d4b2STomas Winkler err = -ENODEV; 2382703d4b2STomas Winkler goto release_irq; 2392703d4b2STomas Winkler } 2402703d4b2STomas Winkler 241180ea05bSTomas Winkler pm_runtime_set_autosuspend_delay(&pdev->dev, MEI_ME_RPM_TIMEOUT); 242180ea05bSTomas Winkler pm_runtime_use_autosuspend(&pdev->dev); 243180ea05bSTomas Winkler 244f3d8e878SAlexander Usyskin err = mei_register(dev, &pdev->dev); 2452703d4b2STomas Winkler if (err) 2461f7e489aSAlexander Usyskin goto stop; 2472703d4b2STomas Winkler 2482703d4b2STomas Winkler pci_set_drvdata(pdev, dev); 2492703d4b2STomas Winkler 250e13fa90cSTomas Winkler /* 251557909e1SAlexander Usyskin * MEI requires to resume from runtime suspend mode 252557909e1SAlexander Usyskin * in order to perform link reset flow upon system suspend. 253557909e1SAlexander Usyskin */ 254e0751556SRafael J. Wysocki dev_pm_set_driver_flags(&pdev->dev, DPM_FLAG_NO_DIRECT_COMPLETE); 255557909e1SAlexander Usyskin 256557909e1SAlexander Usyskin /* 257b42dc063SAlexander Usyskin * ME maps runtime suspend/resume to D0i states, 258b42dc063SAlexander Usyskin * hence we need to go around native PCI runtime service which 259b42dc063SAlexander Usyskin * eventually brings the device into D3cold/hot state, 260b42dc063SAlexander Usyskin * but the mei device cannot wake up from D3 unlike from D0i3. 261b42dc063SAlexander Usyskin * To get around the PCI device native runtime pm, 262b42dc063SAlexander Usyskin * ME uses runtime pm domain handlers which take precedence 263b42dc063SAlexander Usyskin * over the driver's pm handlers. 264e13fa90cSTomas Winkler */ 265e13fa90cSTomas Winkler mei_me_set_pm_domain(dev); 266e13fa90cSTomas Winkler 267cc365dcfSTomas Winkler if (mei_pg_is_enabled(dev)) { 268180ea05bSTomas Winkler pm_runtime_put_noidle(&pdev->dev); 269cc365dcfSTomas Winkler if (hw->d0i3_supported) 270cc365dcfSTomas Winkler pm_runtime_allow(&pdev->dev); 271cc365dcfSTomas Winkler } 272180ea05bSTomas Winkler 273c4e87b52SAlexander Usyskin dev_dbg(&pdev->dev, "initialization successful.\n"); 2742703d4b2STomas Winkler 2752703d4b2STomas Winkler return 0; 2762703d4b2STomas Winkler 2771f7e489aSAlexander Usyskin stop: 2781f7e489aSAlexander Usyskin mei_stop(dev); 2792703d4b2STomas Winkler release_irq: 280dc844b0dSTomas Winkler mei_cancel_work(dev); 2812703d4b2STomas Winkler mei_disable_interrupts(dev); 2822703d4b2STomas Winkler free_irq(pdev->irq, dev); 2832703d4b2STomas Winkler end: 2842703d4b2STomas Winkler dev_err(&pdev->dev, "initialization failed.\n"); 2852703d4b2STomas Winkler return err; 2862703d4b2STomas Winkler } 2872703d4b2STomas Winkler 2882703d4b2STomas Winkler /** 2895c4c0106STomas Winkler * mei_me_shutdown - Device Removal Routine 2905c4c0106STomas Winkler * 2915c4c0106STomas Winkler * @pdev: PCI device structure 2925c4c0106STomas Winkler * 2935c4c0106STomas Winkler * mei_me_shutdown is called from the reboot notifier 2945c4c0106STomas Winkler * it's a simplified version of remove so we go down 2955c4c0106STomas Winkler * faster. 2965c4c0106STomas Winkler */ 2975c4c0106STomas Winkler static void mei_me_shutdown(struct pci_dev *pdev) 2985c4c0106STomas Winkler { 2995c4c0106STomas Winkler struct mei_device *dev; 3005c4c0106STomas Winkler 3015c4c0106STomas Winkler dev = pci_get_drvdata(pdev); 3025c4c0106STomas Winkler if (!dev) 3035c4c0106STomas Winkler return; 3045c4c0106STomas Winkler 3055c4c0106STomas Winkler dev_dbg(&pdev->dev, "shutdown\n"); 3065c4c0106STomas Winkler mei_stop(dev); 3075c4c0106STomas Winkler 3085c4c0106STomas Winkler mei_me_unset_pm_domain(dev); 3095c4c0106STomas Winkler 3105c4c0106STomas Winkler mei_disable_interrupts(dev); 3115c4c0106STomas Winkler free_irq(pdev->irq, dev); 3125c4c0106STomas Winkler } 3135c4c0106STomas Winkler 3145c4c0106STomas Winkler /** 315ce23139cSAlexander Usyskin * mei_me_remove - Device Removal Routine 3162703d4b2STomas Winkler * 3172703d4b2STomas Winkler * @pdev: PCI device structure 3182703d4b2STomas Winkler * 3195c4c0106STomas Winkler * mei_me_remove is called by the PCI subsystem to alert the driver 3202703d4b2STomas Winkler * that it should release a PCI device. 3212703d4b2STomas Winkler */ 322b68301e9STomas Winkler static void mei_me_remove(struct pci_dev *pdev) 3232703d4b2STomas Winkler { 3242703d4b2STomas Winkler struct mei_device *dev; 3252703d4b2STomas Winkler 3262703d4b2STomas Winkler dev = pci_get_drvdata(pdev); 3272703d4b2STomas Winkler if (!dev) 3282703d4b2STomas Winkler return; 3292703d4b2STomas Winkler 330180ea05bSTomas Winkler if (mei_pg_is_enabled(dev)) 331180ea05bSTomas Winkler pm_runtime_get_noresume(&pdev->dev); 332180ea05bSTomas Winkler 333ed6f7ac1SPaul Bolle dev_dbg(&pdev->dev, "stop\n"); 3347cb035d9STomas Winkler mei_stop(dev); 3352703d4b2STomas Winkler 336e13fa90cSTomas Winkler mei_me_unset_pm_domain(dev); 337e13fa90cSTomas Winkler 3382703d4b2STomas Winkler mei_disable_interrupts(dev); 3392703d4b2STomas Winkler 3402703d4b2STomas Winkler free_irq(pdev->irq, dev); 3412703d4b2STomas Winkler 34230e53bb8STomas Winkler mei_deregister(dev); 3432703d4b2STomas Winkler } 344f8a09605STomas Winkler 34516833257SAlexander Usyskin #ifdef CONFIG_PM_SLEEP 346b68301e9STomas Winkler static int mei_me_pci_suspend(struct device *device) 3472703d4b2STomas Winkler { 3482703d4b2STomas Winkler struct pci_dev *pdev = to_pci_dev(device); 3492703d4b2STomas Winkler struct mei_device *dev = pci_get_drvdata(pdev); 3502703d4b2STomas Winkler 3512703d4b2STomas Winkler if (!dev) 3522703d4b2STomas Winkler return -ENODEV; 3532703d4b2STomas Winkler 354ed6f7ac1SPaul Bolle dev_dbg(&pdev->dev, "suspend\n"); 3552703d4b2STomas Winkler 3567cb035d9STomas Winkler mei_stop(dev); 3577cb035d9STomas Winkler 3587cb035d9STomas Winkler mei_disable_interrupts(dev); 3592703d4b2STomas Winkler 3602703d4b2STomas Winkler free_irq(pdev->irq, dev); 3612703d4b2STomas Winkler pci_disable_msi(pdev); 3622703d4b2STomas Winkler 3637cb035d9STomas Winkler return 0; 3642703d4b2STomas Winkler } 3652703d4b2STomas Winkler 366b68301e9STomas Winkler static int mei_me_pci_resume(struct device *device) 3672703d4b2STomas Winkler { 3682703d4b2STomas Winkler struct pci_dev *pdev = to_pci_dev(device); 3692703d4b2STomas Winkler struct mei_device *dev; 3701fa55b4eSAlexander Usyskin unsigned int irqflags; 3712703d4b2STomas Winkler int err; 3722703d4b2STomas Winkler 3732703d4b2STomas Winkler dev = pci_get_drvdata(pdev); 3742703d4b2STomas Winkler if (!dev) 3752703d4b2STomas Winkler return -ENODEV; 3762703d4b2STomas Winkler 3772703d4b2STomas Winkler pci_enable_msi(pdev); 3782703d4b2STomas Winkler 3791fa55b4eSAlexander Usyskin irqflags = pci_dev_msi_enabled(pdev) ? IRQF_ONESHOT : IRQF_SHARED; 3801fa55b4eSAlexander Usyskin 3812703d4b2STomas Winkler /* request and enable interrupt */ 3822703d4b2STomas Winkler err = request_threaded_irq(pdev->irq, 38306ecd645STomas Winkler mei_me_irq_quick_handler, 38406ecd645STomas Winkler mei_me_irq_thread_handler, 3851fa55b4eSAlexander Usyskin irqflags, KBUILD_MODNAME, dev); 3862703d4b2STomas Winkler 3872703d4b2STomas Winkler if (err) { 3882703d4b2STomas Winkler dev_err(&pdev->dev, "request_threaded_irq failed: irq = %d.\n", 3892703d4b2STomas Winkler pdev->irq); 3902703d4b2STomas Winkler return err; 3912703d4b2STomas Winkler } 3922703d4b2STomas Winkler 39333ec0826STomas Winkler err = mei_restart(dev); 39433ec0826STomas Winkler if (err) 39533ec0826STomas Winkler return err; 3962703d4b2STomas Winkler 3972703d4b2STomas Winkler /* Start timer if stopped in suspend */ 3982703d4b2STomas Winkler schedule_delayed_work(&dev->timer_work, HZ); 3992703d4b2STomas Winkler 40033ec0826STomas Winkler return 0; 4012703d4b2STomas Winkler } 402180ea05bSTomas Winkler #endif /* CONFIG_PM_SLEEP */ 40316833257SAlexander Usyskin 404bbd6d050SRafael J. Wysocki #ifdef CONFIG_PM 405180ea05bSTomas Winkler static int mei_me_pm_runtime_idle(struct device *device) 406180ea05bSTomas Winkler { 407180ea05bSTomas Winkler struct mei_device *dev; 408180ea05bSTomas Winkler 409ab81f3f3SChuhong Yuan dev_dbg(device, "rpm: me: runtime_idle\n"); 410180ea05bSTomas Winkler 411ab81f3f3SChuhong Yuan dev = dev_get_drvdata(device); 412180ea05bSTomas Winkler if (!dev) 413180ea05bSTomas Winkler return -ENODEV; 414180ea05bSTomas Winkler if (mei_write_is_idle(dev)) 415d5d83f8aSAlexander Usyskin pm_runtime_autosuspend(device); 416180ea05bSTomas Winkler 417180ea05bSTomas Winkler return -EBUSY; 418180ea05bSTomas Winkler } 419180ea05bSTomas Winkler 420180ea05bSTomas Winkler static int mei_me_pm_runtime_suspend(struct device *device) 421180ea05bSTomas Winkler { 422180ea05bSTomas Winkler struct mei_device *dev; 423180ea05bSTomas Winkler int ret; 424180ea05bSTomas Winkler 425ab81f3f3SChuhong Yuan dev_dbg(device, "rpm: me: runtime suspend\n"); 426180ea05bSTomas Winkler 427ab81f3f3SChuhong Yuan dev = dev_get_drvdata(device); 428180ea05bSTomas Winkler if (!dev) 429180ea05bSTomas Winkler return -ENODEV; 430180ea05bSTomas Winkler 431180ea05bSTomas Winkler mutex_lock(&dev->device_lock); 432180ea05bSTomas Winkler 433180ea05bSTomas Winkler if (mei_write_is_idle(dev)) 4342d1995fcSAlexander Usyskin ret = mei_me_pg_enter_sync(dev); 435180ea05bSTomas Winkler else 436180ea05bSTomas Winkler ret = -EAGAIN; 437180ea05bSTomas Winkler 438180ea05bSTomas Winkler mutex_unlock(&dev->device_lock); 439180ea05bSTomas Winkler 440ab81f3f3SChuhong Yuan dev_dbg(device, "rpm: me: runtime suspend ret=%d\n", ret); 441180ea05bSTomas Winkler 44277537ad2SAlexander Usyskin if (ret && ret != -EAGAIN) 44377537ad2SAlexander Usyskin schedule_work(&dev->reset_work); 44477537ad2SAlexander Usyskin 445180ea05bSTomas Winkler return ret; 446180ea05bSTomas Winkler } 447180ea05bSTomas Winkler 448180ea05bSTomas Winkler static int mei_me_pm_runtime_resume(struct device *device) 449180ea05bSTomas Winkler { 450180ea05bSTomas Winkler struct mei_device *dev; 451180ea05bSTomas Winkler int ret; 452180ea05bSTomas Winkler 453ab81f3f3SChuhong Yuan dev_dbg(device, "rpm: me: runtime resume\n"); 454180ea05bSTomas Winkler 455ab81f3f3SChuhong Yuan dev = dev_get_drvdata(device); 456180ea05bSTomas Winkler if (!dev) 457180ea05bSTomas Winkler return -ENODEV; 458180ea05bSTomas Winkler 459180ea05bSTomas Winkler mutex_lock(&dev->device_lock); 460180ea05bSTomas Winkler 4612d1995fcSAlexander Usyskin ret = mei_me_pg_exit_sync(dev); 462180ea05bSTomas Winkler 463180ea05bSTomas Winkler mutex_unlock(&dev->device_lock); 464180ea05bSTomas Winkler 465ab81f3f3SChuhong Yuan dev_dbg(device, "rpm: me: runtime resume ret = %d\n", ret); 466180ea05bSTomas Winkler 46777537ad2SAlexander Usyskin if (ret) 46877537ad2SAlexander Usyskin schedule_work(&dev->reset_work); 46977537ad2SAlexander Usyskin 470180ea05bSTomas Winkler return ret; 471180ea05bSTomas Winkler } 472e13fa90cSTomas Winkler 473e13fa90cSTomas Winkler /** 4747efceb55SGeert Uytterhoeven * mei_me_set_pm_domain - fill and set pm domain structure for device 475e13fa90cSTomas Winkler * 476e13fa90cSTomas Winkler * @dev: mei_device 477e13fa90cSTomas Winkler */ 478e13fa90cSTomas Winkler static inline void mei_me_set_pm_domain(struct mei_device *dev) 479e13fa90cSTomas Winkler { 480d08b8fc0STomas Winkler struct pci_dev *pdev = to_pci_dev(dev->dev); 481e13fa90cSTomas Winkler 482e13fa90cSTomas Winkler if (pdev->dev.bus && pdev->dev.bus->pm) { 483e13fa90cSTomas Winkler dev->pg_domain.ops = *pdev->dev.bus->pm; 484e13fa90cSTomas Winkler 485e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_suspend = mei_me_pm_runtime_suspend; 486e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_resume = mei_me_pm_runtime_resume; 487e13fa90cSTomas Winkler dev->pg_domain.ops.runtime_idle = mei_me_pm_runtime_idle; 488e13fa90cSTomas Winkler 489989561deSTomeu Vizoso dev_pm_domain_set(&pdev->dev, &dev->pg_domain); 490e13fa90cSTomas Winkler } 491e13fa90cSTomas Winkler } 492e13fa90cSTomas Winkler 493e13fa90cSTomas Winkler /** 4947efceb55SGeert Uytterhoeven * mei_me_unset_pm_domain - clean pm domain structure for device 495e13fa90cSTomas Winkler * 496e13fa90cSTomas Winkler * @dev: mei_device 497e13fa90cSTomas Winkler */ 498e13fa90cSTomas Winkler static inline void mei_me_unset_pm_domain(struct mei_device *dev) 499e13fa90cSTomas Winkler { 500e13fa90cSTomas Winkler /* stop using pm callbacks if any */ 501989561deSTomeu Vizoso dev_pm_domain_set(dev->dev, NULL); 502e13fa90cSTomas Winkler } 503180ea05bSTomas Winkler 504180ea05bSTomas Winkler static const struct dev_pm_ops mei_me_pm_ops = { 505180ea05bSTomas Winkler SET_SYSTEM_SLEEP_PM_OPS(mei_me_pci_suspend, 506180ea05bSTomas Winkler mei_me_pci_resume) 507180ea05bSTomas Winkler SET_RUNTIME_PM_OPS( 508180ea05bSTomas Winkler mei_me_pm_runtime_suspend, 509180ea05bSTomas Winkler mei_me_pm_runtime_resume, 510180ea05bSTomas Winkler mei_me_pm_runtime_idle) 511180ea05bSTomas Winkler }; 512180ea05bSTomas Winkler 513b68301e9STomas Winkler #define MEI_ME_PM_OPS (&mei_me_pm_ops) 5142703d4b2STomas Winkler #else 515b68301e9STomas Winkler #define MEI_ME_PM_OPS NULL 516180ea05bSTomas Winkler #endif /* CONFIG_PM */ 5172703d4b2STomas Winkler /* 5182703d4b2STomas Winkler * PCI driver structure 5192703d4b2STomas Winkler */ 520b68301e9STomas Winkler static struct pci_driver mei_me_driver = { 5212703d4b2STomas Winkler .name = KBUILD_MODNAME, 522b68301e9STomas Winkler .id_table = mei_me_pci_tbl, 523b68301e9STomas Winkler .probe = mei_me_probe, 524b68301e9STomas Winkler .remove = mei_me_remove, 5255c4c0106STomas Winkler .shutdown = mei_me_shutdown, 526b68301e9STomas Winkler .driver.pm = MEI_ME_PM_OPS, 52767de6bf1SAlexander Usyskin .driver.probe_type = PROBE_PREFER_ASYNCHRONOUS, 5282703d4b2STomas Winkler }; 5292703d4b2STomas Winkler 530b68301e9STomas Winkler module_pci_driver(mei_me_driver); 5312703d4b2STomas Winkler 5322703d4b2STomas Winkler MODULE_AUTHOR("Intel Corporation"); 5332703d4b2STomas Winkler MODULE_DESCRIPTION("Intel(R) Management Engine Interface"); 5342703d4b2STomas Winkler MODULE_LICENSE("GPL v2"); 535