2 * UIO Hilscher CIF card driver
4 * (C) 2007 Hans J. Koch <hjk@linutronix.de>
5 * Original code (C) 2005 Benedikt Spranger <b.spranger@linutronix.de>
7 * Licensed under GPL version 2 only.
11 #include <linux/device.h>
12 #include <linux/module.h>
13 #include <linux/pci.h>
14 #include <linux/uio_driver.h>
18 #define PLX9030_INTCSR 0x4C
19 #define INTSCR_INT1_ENABLE 0x01
20 #define INTSCR_INT1_STATUS 0x04
21 #define INT1_ENABLED_AND_ACTIVE (INTSCR_INT1_ENABLE | INTSCR_INT1_STATUS)
23 #define PCI_SUBVENDOR_ID_PEP 0x1518
24 #define CIF_SUBDEVICE_PROFIBUS 0x430
25 #define CIF_SUBDEVICE_DEVICENET 0x432
28 static irqreturn_t hilscher_handler(int irq, struct uio_info *dev_info)
30 void __iomem *plx_intscr = dev_info->mem[0].internal_addr
33 if ((ioread8(plx_intscr) & INT1_ENABLED_AND_ACTIVE)
34 != INT1_ENABLED_AND_ACTIVE)
37 /* Disable interrupt */
38 iowrite8(ioread8(plx_intscr) & ~INTSCR_INT1_ENABLE, plx_intscr);
42 static int __devinit hilscher_pci_probe(struct pci_dev *dev,
43 const struct pci_device_id *id)
45 struct uio_info *info;
47 info = kzalloc(sizeof(struct uio_info), GFP_KERNEL);
51 if (pci_enable_device(dev))
54 if (pci_request_regions(dev, "hilscher"))
57 info->mem[0].addr = pci_resource_start(dev, 0);
58 if (!info->mem[0].addr)
60 info->mem[0].internal_addr = pci_ioremap_bar(dev, 0);
61 if (!info->mem[0].internal_addr)
64 info->mem[0].size = pci_resource_len(dev, 0);
65 info->mem[0].memtype = UIO_MEM_PHYS;
66 info->mem[1].addr = pci_resource_start(dev, 2);
67 info->mem[1].size = pci_resource_len(dev, 2);
68 info->mem[1].memtype = UIO_MEM_PHYS;
69 switch (id->subdevice) {
70 case CIF_SUBDEVICE_PROFIBUS:
71 info->name = "CIF_Profibus";
73 case CIF_SUBDEVICE_DEVICENET:
74 info->name = "CIF_Devicenet";
77 info->name = "CIF_???";
79 info->version = "0.0.1";
81 info->irq_flags = IRQF_DISABLED | IRQF_SHARED;
82 info->handler = hilscher_handler;
84 if (uio_register_device(&dev->dev, info))
87 pci_set_drvdata(dev, info);
91 iounmap(info->mem[0].internal_addr);
93 pci_release_regions(dev);
95 pci_disable_device(dev);
101 static void hilscher_pci_remove(struct pci_dev *dev)
103 struct uio_info *info = pci_get_drvdata(dev);
105 uio_unregister_device(info);
106 pci_release_regions(dev);
107 pci_disable_device(dev);
108 pci_set_drvdata(dev, NULL);
109 iounmap(info->mem[0].internal_addr);
114 static struct pci_device_id hilscher_pci_ids[] __devinitdata = {
116 .vendor = PCI_VENDOR_ID_PLX,
117 .device = PCI_DEVICE_ID_PLX_9030,
118 .subvendor = PCI_SUBVENDOR_ID_PEP,
119 .subdevice = CIF_SUBDEVICE_PROFIBUS,
122 .vendor = PCI_VENDOR_ID_PLX,
123 .device = PCI_DEVICE_ID_PLX_9030,
124 .subvendor = PCI_SUBVENDOR_ID_PEP,
125 .subdevice = CIF_SUBDEVICE_DEVICENET,
130 static struct pci_driver hilscher_pci_driver = {
132 .id_table = hilscher_pci_ids,
133 .probe = hilscher_pci_probe,
134 .remove = hilscher_pci_remove,
137 static int __init hilscher_init_module(void)
139 return pci_register_driver(&hilscher_pci_driver);
142 static void __exit hilscher_exit_module(void)
144 pci_unregister_driver(&hilscher_pci_driver);
147 module_init(hilscher_init_module);
148 module_exit(hilscher_exit_module);
150 MODULE_LICENSE("GPL v2");
151 MODULE_AUTHOR("Hans J. Koch, Benedikt Spranger");