2 * UIO driver for Hilscher NetX based fieldbus cards (cifX, comX).
3 * See http://www.hilscher.com for details.
5 * (C) 2007 Hans J. Koch <hjk@hansjkoch.de>
6 * (C) 2008 Manuel Traut <manut@linutronix.de>
8 * Licensed under GPL version 2 only.
12 #include <linux/device.h>
14 #include <linux/module.h>
15 #include <linux/pci.h>
16 #include <linux/slab.h>
17 #include <linux/uio_driver.h>
19 #define PCI_VENDOR_ID_HILSCHER 0x15CF
20 #define PCI_DEVICE_ID_HILSCHER_NETX 0x0000
21 #define PCI_DEVICE_ID_HILSCHER_NETPLC 0x0010
22 #define PCI_SUBDEVICE_ID_NETPLC_RAM 0x0000
23 #define PCI_SUBDEVICE_ID_NETPLC_FLASH 0x0001
24 #define PCI_SUBDEVICE_ID_NXSB_PCA 0x3235
25 #define PCI_SUBDEVICE_ID_NXPCA 0x3335
27 #define DPM_HOST_INT_EN0 0xfff0
28 #define DPM_HOST_INT_STAT0 0xffe0
30 #define DPM_HOST_INT_MASK 0xe600ffff
31 #define DPM_HOST_INT_GLOBAL_EN 0x80000000
33 static irqreturn_t netx_handler(int irq, struct uio_info *dev_info)
35 void __iomem *int_enable_reg = dev_info->mem[0].internal_addr
37 void __iomem *int_status_reg = dev_info->mem[0].internal_addr
40 /* Is one of our interrupts enabled and active ? */
41 if (!(ioread32(int_enable_reg) & ioread32(int_status_reg)
45 /* Disable interrupt */
46 iowrite32(ioread32(int_enable_reg) & ~DPM_HOST_INT_GLOBAL_EN,
51 static int __devinit netx_pci_probe(struct pci_dev *dev,
52 const struct pci_device_id *id)
54 struct uio_info *info;
57 info = kzalloc(sizeof(struct uio_info), GFP_KERNEL);
61 if (pci_enable_device(dev))
64 if (pci_request_regions(dev, "netx"))
68 case PCI_DEVICE_ID_HILSCHER_NETX:
72 case PCI_DEVICE_ID_HILSCHER_NETPLC:
74 info->name = "netplc";
78 info->name = "netx_plx";
81 /* BAR0 or 2 points to the card's dual port memory */
82 info->mem[0].addr = pci_resource_start(dev, bar);
83 if (!info->mem[0].addr)
85 info->mem[0].internal_addr = ioremap(pci_resource_start(dev, bar),
86 pci_resource_len(dev, bar));
88 if (!info->mem[0].internal_addr)
91 info->mem[0].size = pci_resource_len(dev, bar);
92 info->mem[0].memtype = UIO_MEM_PHYS;
94 info->irq_flags = IRQF_SHARED;
95 info->handler = netx_handler;
96 info->version = "0.0.1";
98 /* Make sure all interrupts are disabled */
99 iowrite32(0, info->mem[0].internal_addr + DPM_HOST_INT_EN0);
101 if (uio_register_device(&dev->dev, info))
104 pci_set_drvdata(dev, info);
105 dev_info(&dev->dev, "Found %s card, registered UIO device.\n",
111 iounmap(info->mem[0].internal_addr);
113 pci_release_regions(dev);
115 pci_disable_device(dev);
121 static void netx_pci_remove(struct pci_dev *dev)
123 struct uio_info *info = pci_get_drvdata(dev);
125 /* Disable all interrupts */
126 iowrite32(0, info->mem[0].internal_addr + DPM_HOST_INT_EN0);
127 uio_unregister_device(info);
128 pci_release_regions(dev);
129 pci_disable_device(dev);
130 pci_set_drvdata(dev, NULL);
131 iounmap(info->mem[0].internal_addr);
136 static struct pci_device_id netx_pci_ids[] = {
138 .vendor = PCI_VENDOR_ID_HILSCHER,
139 .device = PCI_DEVICE_ID_HILSCHER_NETX,
144 .vendor = PCI_VENDOR_ID_HILSCHER,
145 .device = PCI_DEVICE_ID_HILSCHER_NETPLC,
146 .subvendor = PCI_VENDOR_ID_HILSCHER,
147 .subdevice = PCI_SUBDEVICE_ID_NETPLC_RAM,
150 .vendor = PCI_VENDOR_ID_HILSCHER,
151 .device = PCI_DEVICE_ID_HILSCHER_NETPLC,
152 .subvendor = PCI_VENDOR_ID_HILSCHER,
153 .subdevice = PCI_SUBDEVICE_ID_NETPLC_FLASH,
156 .vendor = PCI_VENDOR_ID_PLX,
157 .device = PCI_DEVICE_ID_PLX_9030,
158 .subvendor = PCI_VENDOR_ID_PLX,
159 .subdevice = PCI_SUBDEVICE_ID_NXSB_PCA,
162 .vendor = PCI_VENDOR_ID_PLX,
163 .device = PCI_DEVICE_ID_PLX_9030,
164 .subvendor = PCI_VENDOR_ID_PLX,
165 .subdevice = PCI_SUBDEVICE_ID_NXPCA,
170 static struct pci_driver netx_pci_driver = {
172 .id_table = netx_pci_ids,
173 .probe = netx_pci_probe,
174 .remove = netx_pci_remove,
177 static int __init netx_init_module(void)
179 return pci_register_driver(&netx_pci_driver);
182 static void __exit netx_exit_module(void)
184 pci_unregister_driver(&netx_pci_driver);
187 module_init(netx_init_module);
188 module_exit(netx_exit_module);
190 MODULE_DEVICE_TABLE(pci, netx_pci_ids);
191 MODULE_LICENSE("GPL v2");
192 MODULE_AUTHOR("Hans J. Koch, Manuel Traut");