cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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trident.c (4213B)


      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 *  Driver for Trident 4DWave DX/NX & SiS SI7018 Audio PCI soundcard
      4 *
      5 *  Driver was originated by Trident <audio@tridentmicro.com>
      6 *  			     Fri Feb 19 15:55:28 MST 1999
      7 */
      8
      9#include <linux/init.h>
     10#include <linux/pci.h>
     11#include <linux/time.h>
     12#include <linux/module.h>
     13#include <sound/core.h>
     14#include "trident.h"
     15#include <sound/initval.h>
     16
     17MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>, <audio@tridentmicro.com>");
     18MODULE_DESCRIPTION("Trident 4D-WaveDX/NX & SiS SI7018");
     19MODULE_LICENSE("GPL");
     20
     21static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
     22static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
     23static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable this card */
     24static int pcm_channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 32};
     25static int wavetable_size[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 8192};
     26
     27module_param_array(index, int, NULL, 0444);
     28MODULE_PARM_DESC(index, "Index value for Trident 4DWave PCI soundcard.");
     29module_param_array(id, charp, NULL, 0444);
     30MODULE_PARM_DESC(id, "ID string for Trident 4DWave PCI soundcard.");
     31module_param_array(enable, bool, NULL, 0444);
     32MODULE_PARM_DESC(enable, "Enable Trident 4DWave PCI soundcard.");
     33module_param_array(pcm_channels, int, NULL, 0444);
     34MODULE_PARM_DESC(pcm_channels, "Number of hardware channels assigned for PCM.");
     35module_param_array(wavetable_size, int, NULL, 0444);
     36MODULE_PARM_DESC(wavetable_size, "Maximum memory size in kB for wavetable synth.");
     37
     38static const struct pci_device_id snd_trident_ids[] = {
     39	{PCI_DEVICE(PCI_VENDOR_ID_TRIDENT, PCI_DEVICE_ID_TRIDENT_4DWAVE_DX), 
     40		PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0},
     41	{PCI_DEVICE(PCI_VENDOR_ID_TRIDENT, PCI_DEVICE_ID_TRIDENT_4DWAVE_NX), 
     42		0, 0, 0},
     43	{PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_7018), 0, 0, 0},
     44	{ 0, }
     45};
     46
     47MODULE_DEVICE_TABLE(pci, snd_trident_ids);
     48
     49static int snd_trident_probe(struct pci_dev *pci,
     50			     const struct pci_device_id *pci_id)
     51{
     52	static int dev;
     53	struct snd_card *card;
     54	struct snd_trident *trident;
     55	const char *str;
     56	int err, pcm_dev = 0;
     57
     58	if (dev >= SNDRV_CARDS)
     59		return -ENODEV;
     60	if (!enable[dev]) {
     61		dev++;
     62		return -ENOENT;
     63	}
     64
     65	err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
     66				sizeof(*trident), &card);
     67	if (err < 0)
     68		return err;
     69	trident = card->private_data;
     70
     71	err = snd_trident_create(card, pci,
     72				 pcm_channels[dev],
     73				 ((pci->vendor << 16) | pci->device) == TRIDENT_DEVICE_ID_SI7018 ? 1 : 2,
     74				 wavetable_size[dev]);
     75	if (err < 0)
     76		return err;
     77
     78	switch (trident->device) {
     79	case TRIDENT_DEVICE_ID_DX:
     80		str = "TRID4DWAVEDX";
     81		break;
     82	case TRIDENT_DEVICE_ID_NX:
     83		str = "TRID4DWAVENX";
     84		break;
     85	case TRIDENT_DEVICE_ID_SI7018:
     86		str = "SI7018";
     87		break;
     88	default:
     89		str = "Unknown";
     90	}
     91	strcpy(card->driver, str);
     92	if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
     93		strcpy(card->shortname, "SiS ");
     94	} else {
     95		strcpy(card->shortname, "Trident ");
     96	}
     97	strcat(card->shortname, str);
     98	sprintf(card->longname, "%s PCI Audio at 0x%lx, irq %d",
     99		card->shortname, trident->port, trident->irq);
    100
    101	err = snd_trident_pcm(trident, pcm_dev++);
    102	if (err < 0)
    103		return err;
    104	switch (trident->device) {
    105	case TRIDENT_DEVICE_ID_DX:
    106	case TRIDENT_DEVICE_ID_NX:
    107		err = snd_trident_foldback_pcm(trident, pcm_dev++);
    108		if (err < 0)
    109			return err;
    110		break;
    111	}
    112	if (trident->device == TRIDENT_DEVICE_ID_NX || trident->device == TRIDENT_DEVICE_ID_SI7018) {
    113		err = snd_trident_spdif_pcm(trident, pcm_dev++);
    114		if (err < 0)
    115			return err;
    116	}
    117	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
    118		err = snd_mpu401_uart_new(card, 0, MPU401_HW_TRID4DWAVE,
    119					  trident->midi_port,
    120					  MPU401_INFO_INTEGRATED |
    121					  MPU401_INFO_IRQ_HOOK,
    122					  -1, &trident->rmidi);
    123		if (err < 0)
    124			return err;
    125	}
    126
    127	snd_trident_create_gameport(trident);
    128
    129	err = snd_card_register(card);
    130	if (err < 0)
    131		return err;
    132	pci_set_drvdata(pci, card);
    133	dev++;
    134	return 0;
    135}
    136
    137static struct pci_driver trident_driver = {
    138	.name = KBUILD_MODNAME,
    139	.id_table = snd_trident_ids,
    140	.probe = snd_trident_probe,
    141#ifdef CONFIG_PM_SLEEP
    142	.driver = {
    143		.pm = &snd_trident_pm,
    144	},
    145#endif
    146};
    147
    148module_pci_driver(trident_driver);