/* * UIO Hilscher CIF card driver * * (C) 2007 Hans J. Koch * Original code (C) 2005 Benedikt Spranger * * Licensed under GPL version 2 only. * */ #include #include #include #include #include #include #define PLX9030_INTCSR 0x4C #define INTSCR_INT1_ENABLE 0x01 #define INTSCR_INT1_STATUS 0x04 #define INT1_ENABLED_AND_ACTIVE (INTSCR_INT1_ENABLE | INTSCR_INT1_STATUS) #define PCI_SUBVENDOR_ID_PEP 0x1518 #define CIF_SUBDEVICE_PROFIBUS 0x430 #define CIF_SUBDEVICE_DEVICENET 0x432 static irqreturn_t hilscher_handler(int irq, struct uio_info *dev_info) { void __iomem *plx_intscr = dev_info->mem[0].internal_addr + PLX9030_INTCSR; if ((ioread8(plx_intscr) & INT1_ENABLED_AND_ACTIVE) != INT1_ENABLED_AND_ACTIVE) return IRQ_NONE; /* Disable interrupt */ iowrite8(ioread8(plx_intscr) & ~INTSCR_INT1_ENABLE, plx_intscr); return IRQ_HANDLED; } static int hilscher_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) { struct uio_info *info; info = kzalloc(sizeof(struct uio_info), GFP_KERNEL); if (!info) return -ENOMEM; if (pci_enable_device(dev)) goto out_free; if (pci_request_regions(dev, "hilscher")) goto out_disable; info->mem[0].addr = pci_resource_start(dev, 0); if (!info->mem[0].addr) goto out_release; info->mem[0].internal_addr = pci_ioremap_bar(dev, 0); if (!info->mem[0].internal_addr) goto out_release; info->mem[0].size = pci_resource_len(dev, 0); info->mem[0].memtype = UIO_MEM_PHYS; info->mem[1].addr = pci_resource_start(dev, 2); info->mem[1].size = pci_resource_len(dev, 2); info->mem[1].memtype = UIO_MEM_PHYS; switch (id->subdevice) { case CIF_SUBDEVICE_PROFIBUS: info->name = "CIF_Profibus"; break; case CIF_SUBDEVICE_DEVICENET: info->name = "CIF_Devicenet"; break; default: info->name = "CIF_???"; } info->version = "0.0.1"; info->irq = dev->irq; info->irq_flags = IRQF_SHARED; info->handler = hilscher_handler; if (uio_register_device(&dev->dev, info)) goto out_unmap; pci_set_drvdata(dev, info); return 0; out_unmap: iounmap(info->mem[0].internal_addr); out_release: pci_release_regions(dev); out_disable: pci_disable_device(dev); out_free: kfree (info); return -ENODEV; } static void hilscher_pci_remove(struct pci_dev *dev) { struct uio_info *info = pci_get_drvdata(dev); uio_unregister_device(info); pci_release_regions(dev); pci_disable_device(dev); iounmap(info->mem[0].internal_addr); kfree (info); } static struct pci_device_id hilscher_pci_ids[] = { { .vendor = PCI_VENDOR_ID_PLX, .device = PCI_DEVICE_ID_PLX_9030, .subvendor = PCI_SUBVENDOR_ID_PEP, .subdevice = CIF_SUBDEVICE_PROFIBUS, }, { .vendor = PCI_VENDOR_ID_PLX, .device = PCI_DEVICE_ID_PLX_9030, .subvendor = PCI_SUBVENDOR_ID_PEP, .subdevice = CIF_SUBDEVICE_DEVICENET, }, { 0, } }; static struct pci_driver hilscher_pci_driver = { .name = "hilscher", .id_table = hilscher_pci_ids, .probe = hilscher_pci_probe, .remove = hilscher_pci_remove, }; module_pci_driver(hilscher_pci_driver); MODULE_DEVICE_TABLE(pci, hilscher_pci_ids); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Hans J. Koch, Benedikt Spranger"); t-bindings/clock
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