1 /* 2 * Sonics Silicon Backplane 3 * PCI Hostdevice wrapper 4 * 5 * Copyright (c) 2005 Martin Langer <martin-langer@gmx.de> 6 * Copyright (c) 2005 Stefano Brivio <st3@riseup.net> 7 * Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org> 8 * Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch> 9 * Copyright (c) 2005-2007 Michael Buesch <mbuesch@freenet.de> 10 * 11 * Licensed under the GNU/GPL. See COPYING for details. 12 */ 13 14 #include <linux/pci.h> 15 #include <linux/ssb/ssb.h> 16 17 18 #ifdef CONFIG_PM 19 static int ssb_pcihost_suspend(struct pci_dev *dev, pm_message_t state) 20 { 21 struct ssb_bus *ssb = pci_get_drvdata(dev); 22 int err; 23 24 err = ssb_bus_suspend(ssb); 25 if (err) 26 return err; 27 pci_save_state(dev); 28 pci_disable_device(dev); 29 pci_set_power_state(dev, pci_choose_state(dev, state)); 30 31 return 0; 32 } 33 34 static int ssb_pcihost_resume(struct pci_dev *dev) 35 { 36 struct ssb_bus *ssb = pci_get_drvdata(dev); 37 int err; 38 39 pci_set_power_state(dev, 0); 40 err = pci_enable_device(dev); 41 if (err) 42 return err; 43 pci_restore_state(dev); 44 err = ssb_bus_resume(ssb); 45 if (err) 46 return err; 47 48 return 0; 49 } 50 #else /* CONFIG_PM */ 51 # define ssb_pcihost_suspend NULL 52 # define ssb_pcihost_resume NULL 53 #endif /* CONFIG_PM */ 54 55 static int ssb_pcihost_probe(struct pci_dev *dev, 56 const struct pci_device_id *id) 57 { 58 struct ssb_bus *ssb; 59 int err = -ENOMEM; 60 const char *name; 61 62 ssb = kzalloc(sizeof(*ssb), GFP_KERNEL); 63 if (!ssb) 64 goto out; 65 err = pci_enable_device(dev); 66 if (err) 67 goto err_kfree_ssb; 68 name = dev_name(&dev->dev); 69 if (dev->driver && dev->driver->name) 70 name = dev->driver->name; 71 err = pci_request_regions(dev, name); 72 if (err) 73 goto err_pci_disable; 74 pci_set_master(dev); 75 76 err = ssb_bus_pcibus_register(ssb, dev); 77 if (err) 78 goto err_pci_release_regions; 79 80 pci_set_drvdata(dev, ssb); 81 82 out: 83 return err; 84 85 err_pci_release_regions: 86 pci_release_regions(dev); 87 err_pci_disable: 88 pci_disable_device(dev); 89 err_kfree_ssb: 90 kfree(ssb); 91 return err; 92 } 93 94 static void ssb_pcihost_remove(struct pci_dev *dev) 95 { 96 struct ssb_bus *ssb = pci_get_drvdata(dev); 97 98 ssb_bus_unregister(ssb); 99 pci_release_regions(dev); 100 pci_disable_device(dev); 101 kfree(ssb); 102 pci_set_drvdata(dev, NULL); 103 } 104 105 int ssb_pcihost_register(struct pci_driver *driver) 106 { 107 driver->probe = ssb_pcihost_probe; 108 driver->remove = ssb_pcihost_remove; 109 driver->suspend = ssb_pcihost_suspend; 110 driver->resume = ssb_pcihost_resume; 111 112 return pci_register_driver(driver); 113 } 114 EXPORT_SYMBOL(ssb_pcihost_register); 115