1// SPDX-License-Identifier: GPL-2.0
  2/*
  3 * UIO Hilscher CIF card driver
  4 *
  5 * (C) 2007 Hans J. Koch <hjk@hansjkoch.de>
  6 * Original code (C) 2005 Benedikt Spranger <b.spranger@linutronix.de>
  7 */
  8
  9#include <linux/device.h>
 10#include <linux/module.h>
 11#include <linux/pci.h>
 12#include <linux/slab.h>
 13#include <linux/uio_driver.h>
 14
 15#include <asm/io.h>
 16
 17#define PLX9030_INTCSR		0x4C
 18#define INTSCR_INT1_ENABLE	0x01
 19#define INTSCR_INT1_STATUS	0x04
 20#define INT1_ENABLED_AND_ACTIVE	(INTSCR_INT1_ENABLE | INTSCR_INT1_STATUS)
 21
 22#define PCI_SUBVENDOR_ID_PEP	0x1518
 23#define CIF_SUBDEVICE_PROFIBUS	0x430
 24#define CIF_SUBDEVICE_DEVICENET	0x432
 25
 26
 27static irqreturn_t hilscher_handler(int irq, struct uio_info *dev_info)
 28{
 29	void __iomem *plx_intscr = dev_info->mem[0].internal_addr
 30					+ PLX9030_INTCSR;
 31
 32	if ((ioread8(plx_intscr) & INT1_ENABLED_AND_ACTIVE)
 33	    != INT1_ENABLED_AND_ACTIVE)
 34		return IRQ_NONE;
 35
 36	/* Disable interrupt */
 37	iowrite8(ioread8(plx_intscr) & ~INTSCR_INT1_ENABLE, plx_intscr);
 38	return IRQ_HANDLED;
 39}
 40
 41static int hilscher_pci_probe(struct pci_dev *dev,
 42					const struct pci_device_id *id)
 43{
 44	struct uio_info *info;
 45
 46	info = devm_kzalloc(&dev->dev, sizeof(struct uio_info), GFP_KERNEL);
 47	if (!info)
 48		return -ENOMEM;
 49
 50	if (pci_enable_device(dev))
 51		return -ENODEV;
 52
 53	if (pci_request_regions(dev, "hilscher"))
 54		goto out_disable;
 55
 56	info->mem[0].addr = pci_resource_start(dev, 0);
 57	if (!info->mem[0].addr)
 58		goto out_release;
 59	info->mem[0].internal_addr = pci_ioremap_bar(dev, 0);
 60	if (!info->mem[0].internal_addr)
 61		goto out_release;
 62
 63	info->mem[0].size = pci_resource_len(dev, 0);
 64	info->mem[0].memtype = UIO_MEM_PHYS;
 65	info->mem[1].addr = pci_resource_start(dev, 2);
 66	info->mem[1].size = pci_resource_len(dev, 2);
 67	info->mem[1].memtype = UIO_MEM_PHYS;
 68	switch (id->subdevice) {
 69		case CIF_SUBDEVICE_PROFIBUS:
 70			info->name = "CIF_Profibus";
 71			break;
 72		case CIF_SUBDEVICE_DEVICENET:
 73			info->name = "CIF_Devicenet";
 74			break;
 75		default:
 76			info->name = "CIF_???";
 77	}
 78	info->version = "0.0.1";
 79	info->irq = dev->irq;
 80	info->irq_flags = IRQF_SHARED;
 81	info->handler = hilscher_handler;
 82
 83	if (uio_register_device(&dev->dev, info))
 84		goto out_unmap;
 85
 86	pci_set_drvdata(dev, info);
 87
 88	return 0;
 89out_unmap:
 90	iounmap(info->mem[0].internal_addr);
 91out_release:
 92	pci_release_regions(dev);
 93out_disable:
 94	pci_disable_device(dev);
 95	return -ENODEV;
 96}
 97
 98static void hilscher_pci_remove(struct pci_dev *dev)
 99{
100	struct uio_info *info = pci_get_drvdata(dev);
101
102	uio_unregister_device(info);
103	pci_release_regions(dev);
104	pci_disable_device(dev);
105	iounmap(info->mem[0].internal_addr);
106}
107
108static struct pci_device_id hilscher_pci_ids[] = {
109	{
110		.vendor =	PCI_VENDOR_ID_PLX,
111		.device =	PCI_DEVICE_ID_PLX_9030,
112		.subvendor =	PCI_SUBVENDOR_ID_PEP,
113		.subdevice =	CIF_SUBDEVICE_PROFIBUS,
114	},
115	{
116		.vendor =	PCI_VENDOR_ID_PLX,
117		.device =	PCI_DEVICE_ID_PLX_9030,
118		.subvendor =	PCI_SUBVENDOR_ID_PEP,
119		.subdevice =	CIF_SUBDEVICE_DEVICENET,
120	},
121	{ 0, }
122};
123
124static struct pci_driver hilscher_pci_driver = {
125	.name = "hilscher",
126	.id_table = hilscher_pci_ids,
127	.probe = hilscher_pci_probe,
128	.remove = hilscher_pci_remove,
129};
130
131module_pci_driver(hilscher_pci_driver);
132MODULE_DEVICE_TABLE(pci, hilscher_pci_ids);
133MODULE_DESCRIPTION("UIO Hilscher CIF card driver");
134MODULE_LICENSE("GPL v2");
135MODULE_AUTHOR("Hans J. Koch, Benedikt Spranger");

  1// SPDX-License-Identifier: GPL-2.0
  2/*
  3 * UIO Hilscher CIF card driver
  4 *
  5 * (C) 2007 Hans J. Koch <hjk@hansjkoch.de>
  6 * Original code (C) 2005 Benedikt Spranger <b.spranger@linutronix.de>
  7 */
  8
  9#include <linux/device.h>
 10#include <linux/module.h>
 11#include <linux/pci.h>
 12#include <linux/slab.h>
 13#include <linux/uio_driver.h>
 14
 15#include <asm/io.h>
 16
 17#define PLX9030_INTCSR		0x4C
 18#define INTSCR_INT1_ENABLE	0x01
 19#define INTSCR_INT1_STATUS	0x04
 20#define INT1_ENABLED_AND_ACTIVE	(INTSCR_INT1_ENABLE | INTSCR_INT1_STATUS)
 21
 22#define PCI_SUBVENDOR_ID_PEP	0x1518
 23#define CIF_SUBDEVICE_PROFIBUS	0x430
 24#define CIF_SUBDEVICE_DEVICENET	0x432
 25
 26
 27static irqreturn_t hilscher_handler(int irq, struct uio_info *dev_info)
 28{
 29	void __iomem *plx_intscr = dev_info->mem[0].internal_addr
 30					+ PLX9030_INTCSR;
 31
 32	if ((ioread8(plx_intscr) & INT1_ENABLED_AND_ACTIVE)
 33	    != INT1_ENABLED_AND_ACTIVE)
 34		return IRQ_NONE;
 35
 36	/* Disable interrupt */
 37	iowrite8(ioread8(plx_intscr) & ~INTSCR_INT1_ENABLE, plx_intscr);
 38	return IRQ_HANDLED;
 39}
 40
 41static int hilscher_pci_probe(struct pci_dev *dev,
 42					const struct pci_device_id *id)
 43{
 44	struct uio_info *info;
 45
 46	info = devm_kzalloc(&dev->dev, sizeof(struct uio_info), GFP_KERNEL);
 47	if (!info)
 48		return -ENOMEM;
 49
 50	if (pci_enable_device(dev))
 51		return -ENODEV;
 52
 53	if (pci_request_regions(dev, "hilscher"))
 54		goto out_disable;
 55
 56	info->mem[0].addr = pci_resource_start(dev, 0);
 57	if (!info->mem[0].addr)
 58		goto out_release;
 59	info->mem[0].internal_addr = pci_ioremap_bar(dev, 0);
 60	if (!info->mem[0].internal_addr)
 61		goto out_release;
 62
 63	info->mem[0].size = pci_resource_len(dev, 0);
 64	info->mem[0].memtype = UIO_MEM_PHYS;
 65	info->mem[1].addr = pci_resource_start(dev, 2);
 66	info->mem[1].size = pci_resource_len(dev, 2);
 67	info->mem[1].memtype = UIO_MEM_PHYS;
 68	switch (id->subdevice) {
 69		case CIF_SUBDEVICE_PROFIBUS:
 70			info->name = "CIF_Profibus";
 71			break;
 72		case CIF_SUBDEVICE_DEVICENET:
 73			info->name = "CIF_Devicenet";
 74			break;
 75		default:
 76			info->name = "CIF_???";
 77	}
 78	info->version = "0.0.1";
 79	info->irq = dev->irq;
 80	info->irq_flags = IRQF_SHARED;
 81	info->handler = hilscher_handler;
 82
 83	if (uio_register_device(&dev->dev, info))
 84		goto out_unmap;
 85
 86	pci_set_drvdata(dev, info);
 87
 88	return 0;
 89out_unmap:
 90	iounmap(info->mem[0].internal_addr);
 91out_release:
 92	pci_release_regions(dev);
 93out_disable:
 94	pci_disable_device(dev);
 95	return -ENODEV;
 96}
 97
 98static void hilscher_pci_remove(struct pci_dev *dev)
 99{
100	struct uio_info *info = pci_get_drvdata(dev);
101
102	uio_unregister_device(info);
103	pci_release_regions(dev);
104	pci_disable_device(dev);
105	iounmap(info->mem[0].internal_addr);
106}
107
108static struct pci_device_id hilscher_pci_ids[] = {
109	{
110		.vendor =	PCI_VENDOR_ID_PLX,
111		.device =	PCI_DEVICE_ID_PLX_9030,
112		.subvendor =	PCI_SUBVENDOR_ID_PEP,
113		.subdevice =	CIF_SUBDEVICE_PROFIBUS,
114	},
115	{
116		.vendor =	PCI_VENDOR_ID_PLX,
117		.device =	PCI_DEVICE_ID_PLX_9030,
118		.subvendor =	PCI_SUBVENDOR_ID_PEP,
119		.subdevice =	CIF_SUBDEVICE_DEVICENET,
120	},
121	{ 0, }
122};
123
124static struct pci_driver hilscher_pci_driver = {
125	.name = "hilscher",
126	.id_table = hilscher_pci_ids,
127	.probe = hilscher_pci_probe,
128	.remove = hilscher_pci_remove,
129};
130
131module_pci_driver(hilscher_pci_driver);
132MODULE_DEVICE_TABLE(pci, hilscher_pci_ids);
 
133MODULE_LICENSE("GPL v2");
134MODULE_AUTHOR("Hans J. Koch, Benedikt Spranger");