Version:  2.0.40 2.2.26 2.4.37 2.6.39 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15

Linux/drivers/uio/uio_cif.c

  1 /*
  2  * UIO Hilscher CIF card driver
  3  *
  4  * (C) 2007 Hans J. Koch <hjk@hansjkoch.de>
  5  * Original code (C) 2005 Benedikt Spranger <b.spranger@linutronix.de>
  6  *
  7  * Licensed under GPL version 2 only.
  8  *
  9  */
 10 
 11 #include <linux/device.h>
 12 #include <linux/module.h>
 13 #include <linux/pci.h>
 14 #include <linux/slab.h>
 15 #include <linux/uio_driver.h>
 16 
 17 #include <asm/io.h>
 18 
 19 #define PLX9030_INTCSR          0x4C
 20 #define INTSCR_INT1_ENABLE      0x01
 21 #define INTSCR_INT1_STATUS      0x04
 22 #define INT1_ENABLED_AND_ACTIVE (INTSCR_INT1_ENABLE | INTSCR_INT1_STATUS)
 23 
 24 #define PCI_SUBVENDOR_ID_PEP    0x1518
 25 #define CIF_SUBDEVICE_PROFIBUS  0x430
 26 #define CIF_SUBDEVICE_DEVICENET 0x432
 27 
 28 
 29 static irqreturn_t hilscher_handler(int irq, struct uio_info *dev_info)
 30 {
 31         void __iomem *plx_intscr = dev_info->mem[0].internal_addr
 32                                         + PLX9030_INTCSR;
 33 
 34         if ((ioread8(plx_intscr) & INT1_ENABLED_AND_ACTIVE)
 35             != INT1_ENABLED_AND_ACTIVE)
 36                 return IRQ_NONE;
 37 
 38         /* Disable interrupt */
 39         iowrite8(ioread8(plx_intscr) & ~INTSCR_INT1_ENABLE, plx_intscr);
 40         return IRQ_HANDLED;
 41 }
 42 
 43 static int hilscher_pci_probe(struct pci_dev *dev,
 44                                         const struct pci_device_id *id)
 45 {
 46         struct uio_info *info;
 47 
 48         info = kzalloc(sizeof(struct uio_info), GFP_KERNEL);
 49         if (!info)
 50                 return -ENOMEM;
 51 
 52         if (pci_enable_device(dev))
 53                 goto out_free;
 54 
 55         if (pci_request_regions(dev, "hilscher"))
 56                 goto out_disable;
 57 
 58         info->mem[0].addr = pci_resource_start(dev, 0);
 59         if (!info->mem[0].addr)
 60                 goto out_release;
 61         info->mem[0].internal_addr = pci_ioremap_bar(dev, 0);
 62         if (!info->mem[0].internal_addr)
 63                 goto out_release;
 64 
 65         info->mem[0].size = pci_resource_len(dev, 0);
 66         info->mem[0].memtype = UIO_MEM_PHYS;
 67         info->mem[1].addr = pci_resource_start(dev, 2);
 68         info->mem[1].size = pci_resource_len(dev, 2);
 69         info->mem[1].memtype = UIO_MEM_PHYS;
 70         switch (id->subdevice) {
 71                 case CIF_SUBDEVICE_PROFIBUS:
 72                         info->name = "CIF_Profibus";
 73                         break;
 74                 case CIF_SUBDEVICE_DEVICENET:
 75                         info->name = "CIF_Devicenet";
 76                         break;
 77                 default:
 78                         info->name = "CIF_???";
 79         }
 80         info->version = "0.0.1";
 81         info->irq = dev->irq;
 82         info->irq_flags = IRQF_SHARED;
 83         info->handler = hilscher_handler;
 84 
 85         if (uio_register_device(&dev->dev, info))
 86                 goto out_unmap;
 87 
 88         pci_set_drvdata(dev, info);
 89 
 90         return 0;
 91 out_unmap:
 92         iounmap(info->mem[0].internal_addr);
 93 out_release:
 94         pci_release_regions(dev);
 95 out_disable:
 96         pci_disable_device(dev);
 97 out_free:
 98         kfree (info);
 99         return -ENODEV;
100 }
101 
102 static void hilscher_pci_remove(struct pci_dev *dev)
103 {
104         struct uio_info *info = pci_get_drvdata(dev);
105 
106         uio_unregister_device(info);
107         pci_release_regions(dev);
108         pci_disable_device(dev);
109         iounmap(info->mem[0].internal_addr);
110 
111         kfree (info);
112 }
113 
114 static struct pci_device_id hilscher_pci_ids[] = {
115         {
116                 .vendor =       PCI_VENDOR_ID_PLX,
117                 .device =       PCI_DEVICE_ID_PLX_9030,
118                 .subvendor =    PCI_SUBVENDOR_ID_PEP,
119                 .subdevice =    CIF_SUBDEVICE_PROFIBUS,
120         },
121         {
122                 .vendor =       PCI_VENDOR_ID_PLX,
123                 .device =       PCI_DEVICE_ID_PLX_9030,
124                 .subvendor =    PCI_SUBVENDOR_ID_PEP,
125                 .subdevice =    CIF_SUBDEVICE_DEVICENET,
126         },
127         { 0, }
128 };
129 
130 static struct pci_driver hilscher_pci_driver = {
131         .name = "hilscher",
132         .id_table = hilscher_pci_ids,
133         .probe = hilscher_pci_probe,
134         .remove = hilscher_pci_remove,
135 };
136 
137 module_pci_driver(hilscher_pci_driver);
138 MODULE_DEVICE_TABLE(pci, hilscher_pci_ids);
139 MODULE_LICENSE("GPL v2");
140 MODULE_AUTHOR("Hans J. Koch, Benedikt Spranger");
141 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us