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- #include <linux/delay.h>
- #include <linux/init.h>
- #include <linux/module.h>
- #include <linux/pci.h>
- #include <linux/slab.h>
- #include "sound_config.h"
- #include "sb.h"
- static u8 mixer_read(unsigned long io, u8 reg)
- {
- outb(reg, io + 4);
- udelay(20);
- reg = inb(io + 5);
- udelay(20);
- return reg;
- }
- static int probe_one(struct pci_dev *pdev, const struct pci_device_id *ent)
- {
- struct address_info *hw_config;
- unsigned long base;
- void __iomem *mem;
- unsigned long io;
- u16 map;
- u8 irq, dma8, dma16;
- int oldquiet;
- extern int sb_be_quiet;
-
- base = pci_resource_start(pdev, 0);
- if(base == 0UL)
- return 1;
-
- mem = ioremap(base, 128);
- if (!mem)
- return 1;
- map = readw(mem + 0x18);
- iounmap(mem);
-
-
- io = 0x220 + 0x20 * (map & 3);
-
- if(map & (1<<2))
- printk(KERN_INFO "kahlua: XpressAudio at 0x%lx\n", io);
- else
- return 1;
-
- if(map & (1<<5))
- printk(KERN_INFO "kahlua: MPU at 0x300\n");
- else if(map & (1<<6))
- printk(KERN_INFO "kahlua: MPU at 0x330\n");
-
- irq = mixer_read(io, 0x80) & 0x0F;
- dma8 = mixer_read(io, 0x81);
-
-
- if(dma8 & 0x20)
- dma16 = 5;
- else if(dma8 & 0x40)
- dma16 = 6;
- else if(dma8 & 0x80)
- dma16 = 7;
- else
- {
- printk(KERN_ERR "kahlua: No 16bit DMA enabled.\n");
- return 1;
- }
-
- if(dma8 & 0x01)
- dma8 = 0;
- else if(dma8 & 0x02)
- dma8 = 1;
- else if(dma8 & 0x08)
- dma8 = 3;
- else
- {
- printk(KERN_ERR "kahlua: No 8bit DMA enabled.\n");
- return 1;
- }
-
- if(irq & 1)
- irq = 9;
- else if(irq & 2)
- irq = 5;
- else if(irq & 4)
- irq = 7;
- else if(irq & 8)
- irq = 10;
- else
- {
- printk(KERN_ERR "kahlua: SB IRQ not set.\n");
- return 1;
- }
-
- printk(KERN_INFO "kahlua: XpressAudio on IRQ %d, DMA %d, %d\n",
- irq, dma8, dma16);
-
- hw_config = kzalloc(sizeof(struct address_info), GFP_KERNEL);
- if(hw_config == NULL)
- {
- printk(KERN_ERR "kahlua: out of memory.\n");
- return 1;
- }
-
- pci_set_drvdata(pdev, hw_config);
-
- hw_config->io_base = io;
- hw_config->irq = irq;
- hw_config->dma = dma8;
- hw_config->dma2 = dma16;
- hw_config->name = "Cyrix XpressAudio";
- hw_config->driver_use_1 = SB_NO_MIDI | SB_PCI_IRQ;
- if (!request_region(io, 16, "soundblaster"))
- goto err_out_free;
-
- if(sb_dsp_detect(hw_config, 0, 0, NULL)==0)
- {
- printk(KERN_ERR "kahlua: audio not responding.\n");
- release_region(io, 16);
- goto err_out_free;
- }
- oldquiet = sb_be_quiet;
- sb_be_quiet = 1;
- if(sb_dsp_init(hw_config, THIS_MODULE))
- {
- sb_be_quiet = oldquiet;
- goto err_out_free;
- }
- sb_be_quiet = oldquiet;
-
- return 0;
- err_out_free:
- kfree(hw_config);
- return 1;
- }
- static void remove_one(struct pci_dev *pdev)
- {
- struct address_info *hw_config = pci_get_drvdata(pdev);
- sb_dsp_unload(hw_config, 0);
- kfree(hw_config);
- }
- MODULE_AUTHOR("Alan Cox");
- MODULE_DESCRIPTION("Kahlua VSA1 PCI Audio");
- MODULE_LICENSE("GPL");
- static const struct pci_device_id id_tbl[] = {
- { PCI_VDEVICE(CYRIX, PCI_DEVICE_ID_CYRIX_5530_AUDIO), 0 },
- { }
- };
- MODULE_DEVICE_TABLE(pci, id_tbl);
- static struct pci_driver kahlua_driver = {
- .name = "kahlua",
- .id_table = id_tbl,
- .probe = probe_one,
- .remove = remove_one,
- };
- static int __init kahlua_init_module(void)
- {
- printk(KERN_INFO "Cyrix Kahlua VSA1 XpressAudio support (c) Copyright 2003 Red Hat Inc\n");
- return pci_register_driver(&kahlua_driver);
- }
- static void kahlua_cleanup_module(void)
- {
- pci_unregister_driver(&kahlua_driver);
- }
- module_init(kahlua_init_module);
- module_exit(kahlua_cleanup_module);
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