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