1 #include <linux/init.h>
2 #include <linux/module.h>
3 #include <linux/device.h>
5 #include <linux/slab.h>
8 #include <linux/uio_driver.h>
11 #define PCI_VENDOR_ID_HUMUSOFT 0x186c
12 #define PCI_DEVICE_ID_MF614 0x0614
13 #define PCI_SUBVENDOR_ID_HUMUSOFT 0x186c
14 #define PCI_SUBDEVICE_DEVICE 0x0000
16 #define STATUS_OFFSET 0x10
17 #define STATUS_T5INTE (u32) (1 << 19)
18 #define STATUS_T5 (u32) (1 << 3)
19 #define STATUS_CCINTE (u32) (1 << 18)
20 #define STATUS_CC (u32) (1 << 2)
23 static irqreturn_t mf614_irq_handler(int irq, struct uio_info *info)
25 void __iomem *status_reg = info->priv + STATUS_OFFSET;
27 if ((ioread16(status_reg) & STATUS_T5INTE)
28 && (ioread16(status_reg) & STATUS_T5))
30 iowrite16(ioread16(status_reg) & ~STATUS_T5INTE, status_reg);
34 if ((ioread16(status_reg) & STATUS_CCINTE)
35 && (ioread16(status_reg) & STATUS_CC))
37 iowrite16(ioread16(status_reg) & ~STATUS_CCINTE, status_reg);
44 static int mf614_irqcontrol(struct uio_info *info, s32 irq_on)
46 void __iomem *status_reg = info->priv + STATUS_OFFSET;
48 if (irq_on == 0) { /* Disable interrupts */
49 iowrite16(ioread16(status_reg) & ~STATUS_T5INTE, status_reg);
50 iowrite16(ioread16(status_reg) & ~STATUS_CCINTE, status_reg);
52 else if (irq_on == 1) {
53 iowrite16(ioread16(status_reg) | STATUS_T5INTE, status_reg);
54 iowrite16(ioread16(status_reg) | STATUS_CCINTE, status_reg);
60 static int __devinit mf614_pci_probe(struct pci_dev *dev,
61 const struct pci_device_id *id)
63 struct uio_info *info;
65 info = kzalloc(sizeof(struct uio_info), GFP_KERNEL);
69 if (pci_enable_device(dev))
72 if (pci_request_regions(dev, "mf614"))
76 info->version = "0.0.1";
78 info->port[0].name = "Board programming registers";
79 info->port[0].porttype = UIO_PORT_X86;
80 info->port[0].start = pci_resource_start(dev, 0);
81 if (!info->port[0].start)
83 info->port[0].size = pci_resource_len(dev, 0);
85 info->port[1].name = "OX9162 local configuration registers";
86 info->port[1].porttype = UIO_PORT_X86;
87 info->port[1].start = pci_resource_start(dev, 2);
88 if (!info->port[1].start)
90 info->port[1].size = pci_resource_len(dev, 2);
92 info->priv = pci_iomap(dev, 2, 0);
96 info->mem[0].name = "Board programming registers";
97 info->mem[0].addr = pci_resource_start(dev, 4);
98 if (!info->mem[0].addr)
100 info->mem[0].size = pci_resource_len(dev, 4);
101 info->mem[0].memtype = UIO_MEM_PHYS;
102 info->mem[0].internal_addr = pci_ioremap_bar(dev, 4);
103 if (!info->mem[0].internal_addr)
106 info->irq = dev->irq;
107 info->irq_flags = IRQF_SHARED;
108 info->handler = mf614_irq_handler;
110 info->irqcontrol = mf614_irqcontrol;
112 if(uio_register_device(&dev->dev, info))
115 pci_set_drvdata(dev, info);
120 iounmap(info->mem[0].internal_addr);
122 pci_release_regions(dev);
124 pci_disable_device(dev);
130 static void mf614_pci_remove(struct pci_dev *dev)
132 struct uio_info *info = pci_get_drvdata(dev);
133 void __iomem *status_reg = info->priv + STATUS_OFFSET;
135 /* Disable interrupts */
136 iowrite16(ioread16(status_reg) & ~STATUS_T5INTE, status_reg);
137 iowrite16(ioread16(status_reg) & ~STATUS_CCINTE, status_reg);
139 uio_unregister_device(info);
140 pci_release_regions(dev);
141 pci_disable_device(dev);
142 pci_set_drvdata(dev, NULL);
148 static struct pci_device_id mf614_pci_id[] __devinitdata = {
150 .vendor = PCI_VENDOR_ID_HUMUSOFT,
151 .device = PCI_DEVICE_ID_MF614,
152 .subvendor = PCI_SUBVENDOR_ID_HUMUSOFT,
153 .subdevice = PCI_SUBDEVICE_DEVICE,
158 static struct pci_driver mf614_pci_driver = {
160 .id_table = mf614_pci_id,
161 .probe = mf614_pci_probe,
162 .remove = mf614_pci_remove,
165 static int __init mf614_init_module(void)
167 return pci_register_driver(&mf614_pci_driver);
170 static void __exit mf614_exit_module(void)
172 pci_unregister_driver(&mf614_pci_driver);
175 module_init(mf614_init_module);
176 module_exit(mf614_exit_module);
178 MODULE_LICENSE("GPL v2");
179 MODULE_AUTHOR("Rostislav Lisovy <lisovy@gmail.com>");