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-rw-r--r--sound/pci/au88x0/au88x0.c326
1 files changed, 326 insertions, 0 deletions
diff --git a/sound/pci/au88x0/au88x0.c b/sound/pci/au88x0/au88x0.c
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+++ b/sound/pci/au88x0/au88x0.c
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+// 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);
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