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Diffstat (limited to '')
| -rw-r--r-- | sound/pci/au88x0/au88x0.c | 326 |
1 files changed, 326 insertions, 0 deletions
diff --git a/sound/pci/au88x0/au88x0.c b/sound/pci/au88x0/au88x0.c new file mode 100644 index 000000000..eb2341536 --- /dev/null +++ b/sound/pci/au88x0/au88x0.c @@ -0,0 +1,326 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * ALSA driver for the Aureal Vortex family of soundprocessors. + * Author: Manuel Jander (mjander@embedded.cl) + * + * This driver is the result of the OpenVortex Project from Savannah + * (savannah.nongnu.org/projects/openvortex). I would like to thank + * the developers of OpenVortex, Jeff Muizelaar and Kester Maddock, from + * whom i got plenty of help, and their codebase was invaluable. + * Thanks to the ALSA developers, they helped a lot working out + * the ALSA part. + * Thanks also to Sourceforge for maintaining the old binary drivers, + * and the forum, where developers could comunicate. + * + * Now at least i can play Legacy DOOM with MIDI music :-) + */ + +#include "au88x0.h" +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/dma-mapping.h> +#include <sound/initval.h> + +// module parameters (see "Module Parameters") +static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; +static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; +static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; +static int pcifix[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 255 }; + +module_param_array(index, int, NULL, 0444); +MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard."); +module_param_array(id, charp, NULL, 0444); +MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard."); +module_param_array(enable, bool, NULL, 0444); +MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard."); +module_param_array(pcifix, int, NULL, 0444); +MODULE_PARM_DESC(pcifix, "Enable VIA-workaround for " CARD_NAME " soundcard."); + +MODULE_DESCRIPTION("Aureal vortex"); +MODULE_LICENSE("GPL"); +MODULE_DEVICE_TABLE(pci, snd_vortex_ids); + +static void vortex_fix_latency(struct pci_dev *vortex) +{ + int rc; + rc = pci_write_config_byte(vortex, 0x40, 0xff); + if (!rc) { + dev_info(&vortex->dev, "vortex latency is 0xff\n"); + } else { + dev_warn(&vortex->dev, + "could not set vortex latency: pci error 0x%x\n", rc); + } +} + +static void vortex_fix_agp_bridge(struct pci_dev *via) +{ + int rc; + u8 value; + + /* + * only set the bit (Extend PCI#2 Internal Master for + * Efficient Handling of Dummy Requests) if the can + * read the config and it is not already set + */ + + rc = pci_read_config_byte(via, 0x42, &value); + if (!rc) { + if (!(value & 0x10)) + rc = pci_write_config_byte(via, 0x42, value | 0x10); + } + if (!rc) { + dev_info(&via->dev, "bridge config is 0x%x\n", value | 0x10); + } else { + dev_warn(&via->dev, + "could not set vortex latency: pci error 0x%x\n", rc); + } +} + +static void snd_vortex_workaround(struct pci_dev *vortex, int fix) +{ + struct pci_dev *via = NULL; + + /* autodetect if workarounds are required */ + if (fix == 255) { + /* VIA KT133 */ + via = pci_get_device(PCI_VENDOR_ID_VIA, + PCI_DEVICE_ID_VIA_8365_1, NULL); + /* VIA Apollo */ + if (via == NULL) { + via = pci_get_device(PCI_VENDOR_ID_VIA, + PCI_DEVICE_ID_VIA_82C598_1, NULL); + /* AMD Irongate */ + if (via == NULL) + via = pci_get_device(PCI_VENDOR_ID_AMD, + PCI_DEVICE_ID_AMD_FE_GATE_7007, NULL); + } + if (via) { + dev_info(&vortex->dev, + "Activating latency workaround...\n"); + vortex_fix_latency(vortex); + vortex_fix_agp_bridge(via); + } + } else { + if (fix & 0x1) + vortex_fix_latency(vortex); + if (fix & 0x2) + via = pci_get_device(PCI_VENDOR_ID_VIA, + PCI_DEVICE_ID_VIA_8365_1, NULL); + else if (fix & 0x4) + via = pci_get_device(PCI_VENDOR_ID_VIA, + PCI_DEVICE_ID_VIA_82C598_1, NULL); + else if (fix & 0x8) + via = pci_get_device(PCI_VENDOR_ID_AMD, + PCI_DEVICE_ID_AMD_FE_GATE_7007, NULL); + if (via) + vortex_fix_agp_bridge(via); + } + pci_dev_put(via); +} + +// component-destructor +// (see "Management of Cards and Components") +static void snd_vortex_free(struct snd_card *card) +{ + vortex_t *vortex = card->private_data; + + vortex_gameport_unregister(vortex); + vortex_core_shutdown(vortex); +} + +// chip-specific constructor +// (see "Management of Cards and Components") +static int +snd_vortex_create(struct snd_card *card, struct pci_dev *pci) +{ + vortex_t *chip = card->private_data; + int err; + + // check PCI availability (DMA). + err = pcim_enable_device(pci); + if (err < 0) + return err; + if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(32))) { + dev_err(card->dev, "error to set DMA mask\n"); + return -ENXIO; + } + + chip->card = card; + + // initialize the stuff + chip->pci_dev = pci; + chip->vendor = pci->vendor; + chip->device = pci->device; + chip->card = card; + chip->irq = -1; + + // (1) PCI resource allocation + // Get MMIO area + // + err = pcim_iomap_regions(pci, 1 << 0, CARD_NAME_SHORT); + if (err) + return err; + + chip->io = pci_resource_start(pci, 0); + chip->mmio = pcim_iomap_table(pci)[0]; + + /* Init audio core. + * This must be done before we do request_irq otherwise we can get spurious + * interrupts that we do not handle properly and make a mess of things */ + err = vortex_core_init(chip); + if (err) { + dev_err(card->dev, "hw core init failed\n"); + return err; + } + + err = devm_request_irq(&pci->dev, pci->irq, vortex_interrupt, + IRQF_SHARED, KBUILD_MODNAME, chip); + if (err) { + dev_err(card->dev, "cannot grab irq\n"); + return err; + } + chip->irq = pci->irq; + card->sync_irq = chip->irq; + card->private_free = snd_vortex_free; + + pci_set_master(pci); + // End of PCI setup. + return 0; +} + +// constructor -- see "Constructor" sub-section +static int +__snd_vortex_probe(struct pci_dev *pci, const struct pci_device_id *pci_id) +{ + static int dev; + struct snd_card *card; + vortex_t *chip; + int err; + + // (1) + if (dev >= SNDRV_CARDS) + return -ENODEV; + if (!enable[dev]) { + dev++; + return -ENOENT; + } + // (2) + err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE, + sizeof(*chip), &card); + if (err < 0) + return err; + chip = card->private_data; + + // (3) + err = snd_vortex_create(card, pci); + if (err < 0) + return err; + snd_vortex_workaround(pci, pcifix[dev]); + + // Card details needed in snd_vortex_midi + strcpy(card->driver, CARD_NAME_SHORT); + sprintf(card->shortname, "Aureal Vortex %s", CARD_NAME_SHORT); + sprintf(card->longname, "%s at 0x%lx irq %i", + card->shortname, chip->io, chip->irq); + + // (4) Alloc components. + err = snd_vortex_mixer(chip); + if (err < 0) + return err; + // ADB pcm. + err = snd_vortex_new_pcm(chip, VORTEX_PCM_ADB, NR_PCM); + if (err < 0) + return err; +#ifndef CHIP_AU8820 + // ADB SPDIF + err = snd_vortex_new_pcm(chip, VORTEX_PCM_SPDIF, 1); + if (err < 0) + return err; + // A3D + err = snd_vortex_new_pcm(chip, VORTEX_PCM_A3D, NR_A3D); + if (err < 0) + return err; +#endif + /* + // ADB I2S + if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_I2S, 1)) < 0) { + return err; + } + */ +#ifndef CHIP_AU8810 + // WT pcm. + err = snd_vortex_new_pcm(chip, VORTEX_PCM_WT, NR_WT); + if (err < 0) + return err; +#endif + err = snd_vortex_midi(chip); + if (err < 0) + return err; + + vortex_gameport_register(chip); + +#if 0 + if (snd_seq_device_new(card, 1, SNDRV_SEQ_DEV_ID_VORTEX_SYNTH, + sizeof(snd_vortex_synth_arg_t), &wave) < 0 + || wave == NULL) { + dev_err(card->dev, "Can't initialize Aureal wavetable synth\n"); + } else { + snd_vortex_synth_arg_t *arg; + + arg = SNDRV_SEQ_DEVICE_ARGPTR(wave); + strcpy(wave->name, "Aureal Synth"); + arg->hwptr = vortex; + arg->index = 1; + arg->seq_ports = seq_ports[dev]; + arg->max_voices = max_synth_voices[dev]; + } +#endif + + // (5) + err = pci_read_config_word(pci, PCI_DEVICE_ID, &chip->device); + if (err < 0) + return err; + err = pci_read_config_word(pci, PCI_VENDOR_ID, &chip->vendor); + if (err < 0) + return err; + chip->rev = pci->revision; +#ifdef CHIP_AU8830 + if ((chip->rev) != 0xfe && (chip->rev) != 0xfa) { + dev_alert(card->dev, + "The revision (%x) of your card has not been seen before.\n", + chip->rev); + dev_alert(card->dev, + "Please email the results of 'lspci -vv' to openvortex-dev@nongnu.org.\n"); + return -ENODEV; + } +#endif + + // (6) + err = snd_card_register(card); + if (err < 0) + return err; + // (7) + pci_set_drvdata(pci, card); + dev++; + vortex_connect_default(chip, 1); + vortex_enable_int(chip); + return 0; +} + +static int +snd_vortex_probe(struct pci_dev *pci, const struct pci_device_id *pci_id) +{ + return snd_card_free_on_error(&pci->dev, __snd_vortex_probe(pci, pci_id)); +} + +// pci_driver definition +static struct pci_driver vortex_driver = { + .name = KBUILD_MODNAME, + .id_table = snd_vortex_ids, + .probe = snd_vortex_probe, +}; + +module_pci_driver(vortex_driver); |