1bce5c2eaSStephen Hemminger // SPDX-License-Identifier: GPL-2.0
2bc4c4f45SHans-Jürgen Koch /*
3bc4c4f45SHans-Jürgen Koch * UIO Hilscher CIF card driver
4bc4c4f45SHans-Jürgen Koch *
5318af55dSHans J. Koch * (C) 2007 Hans J. Koch <hjk@hansjkoch.de>
6bc4c4f45SHans-Jürgen Koch * Original code (C) 2005 Benedikt Spranger <b.spranger@linutronix.de>
7bc4c4f45SHans-Jürgen Koch */
8bc4c4f45SHans-Jürgen Koch
9bc4c4f45SHans-Jürgen Koch #include <linux/device.h>
10bc4c4f45SHans-Jürgen Koch #include <linux/module.h>
11bc4c4f45SHans-Jürgen Koch #include <linux/pci.h>
125a0e3ad6STejun Heo #include <linux/slab.h>
13bc4c4f45SHans-Jürgen Koch #include <linux/uio_driver.h>
14bc4c4f45SHans-Jürgen Koch
15bc4c4f45SHans-Jürgen Koch #include <asm/io.h>
16bc4c4f45SHans-Jürgen Koch
17bc4c4f45SHans-Jürgen Koch #define PLX9030_INTCSR 0x4C
18bc4c4f45SHans-Jürgen Koch #define INTSCR_INT1_ENABLE 0x01
19bc4c4f45SHans-Jürgen Koch #define INTSCR_INT1_STATUS 0x04
20bc4c4f45SHans-Jürgen Koch #define INT1_ENABLED_AND_ACTIVE (INTSCR_INT1_ENABLE | INTSCR_INT1_STATUS)
21bc4c4f45SHans-Jürgen Koch
22bc4c4f45SHans-Jürgen Koch #define PCI_SUBVENDOR_ID_PEP 0x1518
23bc4c4f45SHans-Jürgen Koch #define CIF_SUBDEVICE_PROFIBUS 0x430
24bc4c4f45SHans-Jürgen Koch #define CIF_SUBDEVICE_DEVICENET 0x432
25bc4c4f45SHans-Jürgen Koch
26bc4c4f45SHans-Jürgen Koch
hilscher_handler(int irq,struct uio_info * dev_info)27bc4c4f45SHans-Jürgen Koch static irqreturn_t hilscher_handler(int irq, struct uio_info *dev_info)
28bc4c4f45SHans-Jürgen Koch {
29bc4c4f45SHans-Jürgen Koch void __iomem *plx_intscr = dev_info->mem[0].internal_addr
30bc4c4f45SHans-Jürgen Koch + PLX9030_INTCSR;
31bc4c4f45SHans-Jürgen Koch
32bc4c4f45SHans-Jürgen Koch if ((ioread8(plx_intscr) & INT1_ENABLED_AND_ACTIVE)
33bc4c4f45SHans-Jürgen Koch != INT1_ENABLED_AND_ACTIVE)
34bc4c4f45SHans-Jürgen Koch return IRQ_NONE;
35bc4c4f45SHans-Jürgen Koch
36bc4c4f45SHans-Jürgen Koch /* Disable interrupt */
37bc4c4f45SHans-Jürgen Koch iowrite8(ioread8(plx_intscr) & ~INTSCR_INT1_ENABLE, plx_intscr);
38bc4c4f45SHans-Jürgen Koch return IRQ_HANDLED;
39bc4c4f45SHans-Jürgen Koch }
40bc4c4f45SHans-Jürgen Koch
hilscher_pci_probe(struct pci_dev * dev,const struct pci_device_id * id)41b17b75bbSBill Pemberton static int hilscher_pci_probe(struct pci_dev *dev,
42bc4c4f45SHans-Jürgen Koch const struct pci_device_id *id)
43bc4c4f45SHans-Jürgen Koch {
44bc4c4f45SHans-Jürgen Koch struct uio_info *info;
45bc4c4f45SHans-Jürgen Koch
460a4ade53SAlexandru Ardelean info = devm_kzalloc(&dev->dev, sizeof(struct uio_info), GFP_KERNEL);
47bc4c4f45SHans-Jürgen Koch if (!info)
48bc4c4f45SHans-Jürgen Koch return -ENOMEM;
49bc4c4f45SHans-Jürgen Koch
50bc4c4f45SHans-Jürgen Koch if (pci_enable_device(dev))
510a4ade53SAlexandru Ardelean return -ENODEV;
52bc4c4f45SHans-Jürgen Koch
53bc4c4f45SHans-Jürgen Koch if (pci_request_regions(dev, "hilscher"))
54bc4c4f45SHans-Jürgen Koch goto out_disable;
55bc4c4f45SHans-Jürgen Koch
56bc4c4f45SHans-Jürgen Koch info->mem[0].addr = pci_resource_start(dev, 0);
57bc4c4f45SHans-Jürgen Koch if (!info->mem[0].addr)
58bc4c4f45SHans-Jürgen Koch goto out_release;
597898aa5cSArjan van de Ven info->mem[0].internal_addr = pci_ioremap_bar(dev, 0);
60bc4c4f45SHans-Jürgen Koch if (!info->mem[0].internal_addr)
61bc4c4f45SHans-Jürgen Koch goto out_release;
62bc4c4f45SHans-Jürgen Koch
63bc4c4f45SHans-Jürgen Koch info->mem[0].size = pci_resource_len(dev, 0);
64bc4c4f45SHans-Jürgen Koch info->mem[0].memtype = UIO_MEM_PHYS;
65bc4c4f45SHans-Jürgen Koch info->mem[1].addr = pci_resource_start(dev, 2);
66bc4c4f45SHans-Jürgen Koch info->mem[1].size = pci_resource_len(dev, 2);
67bc4c4f45SHans-Jürgen Koch info->mem[1].memtype = UIO_MEM_PHYS;
68bc4c4f45SHans-Jürgen Koch switch (id->subdevice) {
69bc4c4f45SHans-Jürgen Koch case CIF_SUBDEVICE_PROFIBUS:
70bc4c4f45SHans-Jürgen Koch info->name = "CIF_Profibus";
71bc4c4f45SHans-Jürgen Koch break;
72bc4c4f45SHans-Jürgen Koch case CIF_SUBDEVICE_DEVICENET:
73bc4c4f45SHans-Jürgen Koch info->name = "CIF_Devicenet";
74bc4c4f45SHans-Jürgen Koch break;
75bc4c4f45SHans-Jürgen Koch default:
76bc4c4f45SHans-Jürgen Koch info->name = "CIF_???";
77bc4c4f45SHans-Jürgen Koch }
78bc4c4f45SHans-Jürgen Koch info->version = "0.0.1";
79bc4c4f45SHans-Jürgen Koch info->irq = dev->irq;
8014ec5394SHans J. Koch info->irq_flags = IRQF_SHARED;
81bc4c4f45SHans-Jürgen Koch info->handler = hilscher_handler;
82bc4c4f45SHans-Jürgen Koch
83bc4c4f45SHans-Jürgen Koch if (uio_register_device(&dev->dev, info))
84bc4c4f45SHans-Jürgen Koch goto out_unmap;
85bc4c4f45SHans-Jürgen Koch
86bc4c4f45SHans-Jürgen Koch pci_set_drvdata(dev, info);
87bc4c4f45SHans-Jürgen Koch
88bc4c4f45SHans-Jürgen Koch return 0;
89bc4c4f45SHans-Jürgen Koch out_unmap:
90bc4c4f45SHans-Jürgen Koch iounmap(info->mem[0].internal_addr);
91bc4c4f45SHans-Jürgen Koch out_release:
92bc4c4f45SHans-Jürgen Koch pci_release_regions(dev);
93bc4c4f45SHans-Jürgen Koch out_disable:
94bc4c4f45SHans-Jürgen Koch pci_disable_device(dev);
95bc4c4f45SHans-Jürgen Koch return -ENODEV;
96bc4c4f45SHans-Jürgen Koch }
97bc4c4f45SHans-Jürgen Koch
hilscher_pci_remove(struct pci_dev * dev)98bc4c4f45SHans-Jürgen Koch static void hilscher_pci_remove(struct pci_dev *dev)
99bc4c4f45SHans-Jürgen Koch {
100bc4c4f45SHans-Jürgen Koch struct uio_info *info = pci_get_drvdata(dev);
101bc4c4f45SHans-Jürgen Koch
102bc4c4f45SHans-Jürgen Koch uio_unregister_device(info);
103bc4c4f45SHans-Jürgen Koch pci_release_regions(dev);
104bc4c4f45SHans-Jürgen Koch pci_disable_device(dev);
105bc4c4f45SHans-Jürgen Koch iounmap(info->mem[0].internal_addr);
106bc4c4f45SHans-Jürgen Koch }
107bc4c4f45SHans-Jürgen Koch
108d46f7438SBill Pemberton static struct pci_device_id hilscher_pci_ids[] = {
109bc4c4f45SHans-Jürgen Koch {
110bc4c4f45SHans-Jürgen Koch .vendor = PCI_VENDOR_ID_PLX,
111bc4c4f45SHans-Jürgen Koch .device = PCI_DEVICE_ID_PLX_9030,
112bc4c4f45SHans-Jürgen Koch .subvendor = PCI_SUBVENDOR_ID_PEP,
113bc4c4f45SHans-Jürgen Koch .subdevice = CIF_SUBDEVICE_PROFIBUS,
114bc4c4f45SHans-Jürgen Koch },
115bc4c4f45SHans-Jürgen Koch {
116bc4c4f45SHans-Jürgen Koch .vendor = PCI_VENDOR_ID_PLX,
117bc4c4f45SHans-Jürgen Koch .device = PCI_DEVICE_ID_PLX_9030,
118bc4c4f45SHans-Jürgen Koch .subvendor = PCI_SUBVENDOR_ID_PEP,
119bc4c4f45SHans-Jürgen Koch .subdevice = CIF_SUBDEVICE_DEVICENET,
120bc4c4f45SHans-Jürgen Koch },
121bc4c4f45SHans-Jürgen Koch { 0, }
122bc4c4f45SHans-Jürgen Koch };
123bc4c4f45SHans-Jürgen Koch
124bc4c4f45SHans-Jürgen Koch static struct pci_driver hilscher_pci_driver = {
125bc4c4f45SHans-Jürgen Koch .name = "hilscher",
126bc4c4f45SHans-Jürgen Koch .id_table = hilscher_pci_ids,
127bc4c4f45SHans-Jürgen Koch .probe = hilscher_pci_probe,
128bc4c4f45SHans-Jürgen Koch .remove = hilscher_pci_remove,
129bc4c4f45SHans-Jürgen Koch };
130bc4c4f45SHans-Jürgen Koch
131ced9017aSPeter Huewe module_pci_driver(hilscher_pci_driver);
132912335c4SHans J. Koch MODULE_DEVICE_TABLE(pci, hilscher_pci_ids);
133*63921944SJeff Johnson MODULE_DESCRIPTION("UIO Hilscher CIF card driver");
134bc4c4f45SHans-Jürgen Koch MODULE_LICENSE("GPL v2");
135bc4c4f45SHans-Jürgen Koch MODULE_AUTHOR("Hans J. Koch, Benedikt Spranger");
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