projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * File: portdrv_pci.c | |
| 3 | * Purpose: PCI Express Port Bus Driver | |
| 4 | * | |
| 5 | * Copyright (C) 2004 Intel | |
| 6 | * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com) | |
| 7 | */ | |
| 8 | ||
| 9 | #include <linux/module.h> | |
| 10 | #include <linux/pci.h> | |
| 11 | #include <linux/kernel.h> | |
| 12 | #include <linux/errno.h> | |
| 13 | #include <linux/pm.h> | |
| 14 | #include <linux/init.h> | |
| 15 | #include <linux/pcieport_if.h> | |
| 16 | ||
| 17 | #include "portdrv.h" | |
| 18 | ||
| 19 | /* | |
| 20 | * Version Information | |
| 21 | */ | |
| 22 | #define DRIVER_VERSION "v1.0" | |
| 23 | #define DRIVER_AUTHOR "tom.l.nguyen@intel.com" | |
| 24 | #define DRIVER_DESC "PCIE Port Bus Driver" | |
| 25 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
| 26 | MODULE_DESCRIPTION(DRIVER_DESC); | |
| 27 | MODULE_LICENSE("GPL"); | |
| 28 | ||
| 29 | /* global data */ | |
| 30 | static const char device_name[] = "pcieport-driver"; | |
| 31 | ||
| 32 | /* | |
| 33 | * pcie_portdrv_probe - Probe PCI-Express port devices | |
| 34 | * @dev: PCI-Express port device being probed | |
| 35 | * | |
| 36 | * If detected invokes the pcie_port_device_register() method for | |
| 37 | * this port device. | |
| 38 | * | |
| 39 | */ | |
| 40 | static int __devinit pcie_portdrv_probe (struct pci_dev *dev, | |
| 41 | const struct pci_device_id *id ) | |
| 42 | { | |
| 43 | int status; | |
| 44 | ||
| 45 | status = pcie_port_device_probe(dev); | |
| 46 | if (status) | |
| 47 | return status; | |
| 48 | ||
| 49 | if (pci_enable_device(dev) < 0) | |
| 50 | return -ENODEV; | |
| 51 | ||
| 52 | pci_set_master(dev); | |
| 53 | if (!dev->irq) { | |
| 54 | printk(KERN_WARNING | |
| 55 | "%s->Dev[%04x:%04x] has invalid IRQ. Check vendor BIOS\n", | |
| 56 | __FUNCTION__, dev->device, dev->vendor); | |
| 57 | } | |
| 58 | if (pcie_port_device_register(dev)) | |
| 59 | return -ENOMEM; | |
| 60 | ||
| 61 | return 0; | |
| 62 | } | |
| 63 | ||
| 64 | static void pcie_portdrv_remove (struct pci_dev *dev) | |
| 65 | { | |
| 66 | pcie_port_device_remove(dev); | |
| 67 | } | |
| 68 | ||
| 69 | #ifdef CONFIG_PM | |
| 7f4927c1 | 70 | static int pcie_portdrv_suspend (struct pci_dev *dev, pm_message_t state) |
| 1da177e4 LT |
71 | { |
| 72 | return pcie_port_device_suspend(dev, state); | |
| 73 | } | |
| 74 | ||
| 75 | static int pcie_portdrv_resume (struct pci_dev *dev) | |
| 76 | { | |
| 77 | return pcie_port_device_resume(dev); | |
| 78 | } | |
| 79 | #endif | |
| 80 | ||
| 81 | /* | |
| 82 | * LINUX Device Driver Model | |
| 83 | */ | |
| 84 | static const struct pci_device_id port_pci_ids[] = { { | |
| 85 | /* handle any PCI-Express port */ | |
| 86 | PCI_DEVICE_CLASS(((PCI_CLASS_BRIDGE_PCI << 8) | 0x00), ~0), | |
| 87 | }, { /* end: all zeroes */ } | |
| 88 | }; | |
| 89 | MODULE_DEVICE_TABLE(pci, port_pci_ids); | |
| 90 | ||
| 91 | static struct pci_driver pcie_portdrv = { | |
| 92 | .name = (char *)device_name, | |
| 93 | .id_table = &port_pci_ids[0], | |
| 94 | ||
| 95 | .probe = pcie_portdrv_probe, | |
| 96 | .remove = pcie_portdrv_remove, | |
| 97 | ||
| 98 | #ifdef CONFIG_PM | |
| 99 | .suspend = pcie_portdrv_suspend, | |
| 100 | .resume = pcie_portdrv_resume, | |
| 101 | #endif /* PM */ | |
| 102 | }; | |
| 103 | ||
| 104 | static int __init pcie_portdrv_init(void) | |
| 105 | { | |
| 106 | int retval = 0; | |
| 107 | ||
| 108 | pcie_port_bus_register(); | |
| 109 | retval = pci_register_driver(&pcie_portdrv); | |
| 110 | if (retval) | |
| 111 | pcie_port_bus_unregister(); | |
| 112 | return retval; | |
| 113 | } | |
| 114 | ||
| 115 | static void __exit pcie_portdrv_exit(void) | |
| 116 | { | |
| 117 | pci_unregister_driver(&pcie_portdrv); | |
| 118 | pcie_port_bus_unregister(); | |
| 119 | } | |
| 120 | ||
| 121 | module_init(pcie_portdrv_init); | |
| 122 | module_exit(pcie_portdrv_exit); |