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 pci_save_state(dev); 22 pci_disable_device(dev); 23 pci_set_power_state(dev, pci_choose_state(dev, state)); 24 25 return 0; 26 } 27 28 static int ssb_pcihost_resume(struct pci_dev *dev) 29 { 30 int err; 31 32 pci_set_power_state(dev, 0); 33 err = pci_enable_device(dev); 34 if (err) 35 return err; 36 pci_restore_state(dev); 37 38 return 0; 39 } 40 #else /* CONFIG_PM */ 41 # define ssb_pcihost_suspend NULL 42 # define ssb_pcihost_resume NULL 43 #endif /* CONFIG_PM */ 44 45 static int ssb_pcihost_probe(struct pci_dev *dev, 46 const struct pci_device_id *id) 47 { 48 struct ssb_bus *ssb; 49 int err = -ENOMEM; 50 const char *name; 51 52 ssb = kzalloc(sizeof(*ssb), GFP_KERNEL); 53 if (!ssb) 54 goto out; 55 err = pci_enable_device(dev); 56 if (err) 57 goto err_kfree_ssb; 58 name = dev->dev.bus_id; 59 if (dev->driver && dev->driver->name) 60 name = dev->driver->name; 61 err = pci_request_regions(dev, name); 62 if (err) 63 goto err_pci_disable; 64 pci_set_master(dev); 65 66 err = ssb_bus_pcibus_register(ssb, dev); 67 if (err) 68 goto err_pci_release_regions; 69 70 pci_set_drvdata(dev, ssb); 71 72 out: 73 return err; 74 75 err_pci_release_regions: 76 pci_release_regions(dev); 77 err_pci_disable: 78 pci_disable_device(dev); 79 err_kfree_ssb: 80 kfree(ssb); 81 return err; 82 } 83 84 static void ssb_pcihost_remove(struct pci_dev *dev) 85 { 86 struct ssb_bus *ssb = pci_get_drvdata(dev); 87 88 ssb_bus_unregister(ssb); 89 pci_release_regions(dev); 90 pci_disable_device(dev); 91 kfree(ssb); 92 pci_set_drvdata(dev, NULL); 93 } 94 95 int ssb_pcihost_register(struct pci_driver *driver) 96 { 97 driver->probe = ssb_pcihost_probe; 98 driver->remove = ssb_pcihost_remove; 99 driver->suspend = ssb_pcihost_suspend; 100 driver->resume = ssb_pcihost_resume; 101 102 return pci_register_driver(driver); 103 } 104 EXPORT_SYMBOL(ssb_pcihost_register); 105