cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

emu10k1-gp.c (2405B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 *  Copyright (c) 2001 Vojtech Pavlik
      4 */
      5
      6/*
      7 * EMU10k1 - SB Live / Audigy - gameport driver for Linux
      8 */
      9
     10/*
     11 */
     12
     13#include <asm/io.h>
     14
     15#include <linux/module.h>
     16#include <linux/ioport.h>
     17#include <linux/gameport.h>
     18#include <linux/slab.h>
     19#include <linux/pci.h>
     20
     21MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
     22MODULE_DESCRIPTION("EMU10k1 gameport driver");
     23MODULE_LICENSE("GPL");
     24
     25struct emu {
     26	struct pci_dev *dev;
     27	struct gameport *gameport;
     28	int io;
     29	int size;
     30};
     31
     32static const struct pci_device_id emu_tbl[] = {
     33
     34	{ 0x1102, 0x7002, PCI_ANY_ID, PCI_ANY_ID }, /* SB Live gameport */
     35	{ 0x1102, 0x7003, PCI_ANY_ID, PCI_ANY_ID }, /* Audigy gameport */
     36	{ 0x1102, 0x7004, PCI_ANY_ID, PCI_ANY_ID }, /* Dell SB Live */
     37	{ 0x1102, 0x7005, PCI_ANY_ID, PCI_ANY_ID }, /* Audigy LS gameport */
     38	{ 0, }
     39};
     40
     41MODULE_DEVICE_TABLE(pci, emu_tbl);
     42
     43static int emu_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
     44{
     45	struct emu *emu;
     46	struct gameport *port;
     47	int error;
     48
     49	emu = kzalloc(sizeof(struct emu), GFP_KERNEL);
     50	port = gameport_allocate_port();
     51	if (!emu || !port) {
     52		printk(KERN_ERR "emu10k1-gp: Memory allocation failed\n");
     53		error = -ENOMEM;
     54		goto err_out_free;
     55	}
     56
     57	error = pci_enable_device(pdev);
     58	if (error)
     59		goto err_out_free;
     60
     61	emu->io = pci_resource_start(pdev, 0);
     62	emu->size = pci_resource_len(pdev, 0);
     63
     64	emu->dev = pdev;
     65	emu->gameport = port;
     66
     67	gameport_set_name(port, "EMU10K1");
     68	gameport_set_phys(port, "pci%s/gameport0", pci_name(pdev));
     69	port->dev.parent = &pdev->dev;
     70	port->io = emu->io;
     71
     72	if (!request_region(emu->io, emu->size, "emu10k1-gp")) {
     73		printk(KERN_ERR "emu10k1-gp: unable to grab region 0x%x-0x%x\n",
     74			emu->io, emu->io + emu->size - 1);
     75		error = -EBUSY;
     76		goto err_out_disable_dev;
     77	}
     78
     79	pci_set_drvdata(pdev, emu);
     80
     81	gameport_register_port(port);
     82
     83	return 0;
     84
     85 err_out_disable_dev:
     86	pci_disable_device(pdev);
     87 err_out_free:
     88	gameport_free_port(port);
     89	kfree(emu);
     90	return error;
     91}
     92
     93static void emu_remove(struct pci_dev *pdev)
     94{
     95	struct emu *emu = pci_get_drvdata(pdev);
     96
     97	gameport_unregister_port(emu->gameport);
     98	release_region(emu->io, emu->size);
     99	kfree(emu);
    100
    101	pci_disable_device(pdev);
    102}
    103
    104static struct pci_driver emu_driver = {
    105        .name =         "Emu10k1_gameport",
    106        .id_table =     emu_tbl,
    107        .probe =        emu_probe,
    108	.remove =	emu_remove,
    109};
    110
    111module_pci_driver(emu_driver);