cregit-Linux how code gets into the kernel

Release 4.7 sound/oss/trix.c

Directory: sound/oss
/*
 * sound/oss/trix.c
 *
 * Low level driver for the MediaTrix AudioTrix Pro
 * (MT-0002-PC Control Chip)
 *
 *
 * Copyright (C) by Hannu Savolainen 1993-1997
 *
 * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
 * Version 2 (June 1991). See the "COPYING" file distributed with this software
 * for more info.
 *
 * Changes
 *      Alan Cox                Modularisation, cleanup.
 *      Christoph Hellwig       Adapted to module_init/module_exit
 *      Arnaldo C. de Melo      Got rid of attach_uart401
 */
 
#include <linux/init.h>
#include <linux/module.h>

#include "sound_config.h"
#include "sb.h"
#include "sound_firmware.h"

#include "ad1848.h"
#include "mpu401.h"

#include "trix_boot.h"


static int mpu;


static bool joystick;


static unsigned char trix_read(int addr) { outb(((unsigned char) addr), 0x390); /* MT-0002-PC ASIC address */ return inb(0x391); /* MT-0002-PC ASIC data */ }

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static void trix_write(int addr, int data) { outb(((unsigned char) addr), 0x390); /* MT-0002-PC ASIC address */ outb(((unsigned char) data), 0x391); /* MT-0002-PC ASIC data */ }

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static void download_boot(int base) { int i = 0, n = trix_boot_len; if (trix_boot_len == 0) return; trix_write(0xf8, 0x00); /* ??????? */ outb((0x01), base + 6); /* Clear the internal data pointer */ outb((0x00), base + 6); /* Restart */ /* * Write the boot code to the RAM upload/download register. * Each write increments the internal data pointer. */ outb((0x01), base + 6); /* Clear the internal data pointer */ outb((0x1A), 0x390); /* Select RAM download/upload port */ for (i = 0; i < n; i++) outb((trix_boot[i]), 0x391); for (i = n; i < 10016; i++) /* Clear up to first 16 bytes of data RAM */ outb((0x00), 0x391); outb((0x00), base + 6); /* Reset */ outb((0x50), 0x390); /* ?????? */ }

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static int trix_set_wss_port(struct address_info *hw_config) { unsigned char addr_bits; if (trix_read(0x15) != 0x71) /* No ASIC signature */ { MDB(printk(KERN_ERR "No AudioTrix ASIC signature found\n")); return 0; } /* * Reset some registers. */ trix_write(0x13, 0); trix_write(0x14, 0); /* * Configure the ASIC to place the codec to the proper I/O location */ switch (hw_config->io_base) { case 0x530: addr_bits = 0; break; case 0x604: addr_bits = 1; break; case 0xE80: addr_bits = 2; break; case 0xF40: addr_bits = 3; break; default: return 0; } trix_write(0x19, (trix_read(0x19) & 0x03) | addr_bits); return 1; }

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/* * Probe and attach routines for the Windows Sound System mode of * AudioTrix Pro */
static int __init init_trix_wss(struct address_info *hw_config) { static unsigned char dma_bits[4] = { 1, 2, 0, 3 }; struct resource *ports; int config_port = hw_config->io_base + 0; int dma1 = hw_config->dma, dma2 = hw_config->dma2; int old_num_mixers = num_mixers; u8 config, bits; int ret; switch(hw_config->irq) { case 7: bits = 8; break; case 9: bits = 0x10; break; case 10: bits = 0x18; break; case 11: bits = 0x20; break; default: printk(KERN_ERR "AudioTrix: Bad WSS IRQ %d\n", hw_config->irq); return 0; } switch (dma1) { case 0: case 1: case 3: break; default: printk(KERN_ERR "AudioTrix: Bad WSS DMA %d\n", dma1); return 0; } switch (dma2) { case -1: case 0: case 1: case 3: break; default: printk(KERN_ERR "AudioTrix: Bad capture DMA %d\n", dma2); return 0; } /* * Check if the IO port returns valid signature. The original MS Sound * system returns 0x04 while some cards (AudioTrix Pro for example) * return 0x00. */ ports = request_region(hw_config->io_base + 4, 4, "ad1848"); if (!ports) { printk(KERN_ERR "AudioTrix: MSS I/O port conflict (%x)\n", hw_config->io_base); return 0; } if (!request_region(hw_config->io_base, 4, "MSS config")) { printk(KERN_ERR "AudioTrix: MSS I/O port conflict (%x)\n", hw_config->io_base); release_region(hw_config->io_base + 4, 4); return 0; } if (!trix_set_wss_port(hw_config)) goto fail; config = inb(hw_config->io_base + 3); if ((config & 0x3f) != 0x00) { MDB(printk(KERN_ERR "No MSS signature detected on port 0x%x\n", hw_config->io_base)); goto fail; } /* * Check that DMA0 is not in use with a 8 bit board. */ if (dma1 == 0 && config & 0x80) { printk(KERN_ERR "AudioTrix: Can't use DMA0 with a 8 bit card slot\n"); goto fail; } if (hw_config->irq > 9 && config & 0x80) { printk(KERN_ERR "AudioTrix: Can't use IRQ%d with a 8 bit card slot\n", hw_config->irq); goto fail; } ret = ad1848_detect(ports, NULL, hw_config->osp); if (!ret) goto fail; if (joystick==1) trix_write(0x15, 0x80); /* * Set the IRQ and DMA addresses. */ outb((bits | 0x40), config_port); if (dma2 == -1 || dma2 == dma1) { bits |= dma_bits[dma1]; dma2 = dma1; } else { unsigned char tmp; tmp = trix_read(0x13) & ~30; trix_write(0x13, tmp | 0x80 | (dma1 << 4)); tmp = trix_read(0x14) & ~30; trix_write(0x14, tmp | 0x80 | (dma2 << 4)); } outb((bits), config_port); /* Write IRQ+DMA setup */ hw_config->slots[0] = ad1848_init("AudioTrix Pro", ports, hw_config->irq, dma1, dma2, 0, hw_config->osp, THIS_MODULE); if (num_mixers > old_num_mixers) /* Mixer got installed */ { AD1848_REROUTE(SOUND_MIXER_LINE1, SOUND_MIXER_LINE); /* Line in */ AD1848_REROUTE(SOUND_MIXER_LINE2, SOUND_MIXER_CD); AD1848_REROUTE(SOUND_MIXER_LINE3, SOUND_MIXER_SYNTH); /* OPL4 */ AD1848_REROUTE(SOUND_MIXER_SPEAKER, SOUND_MIXER_ALTPCM); /* SB */ } return 1; fail: release_region(hw_config->io_base, 4); release_region(hw_config->io_base + 4, 4); return 0; }

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static int __init probe_trix_sb(struct address_info *hw_config) { int tmp; unsigned char conf; extern int sb_be_quiet; int old_quiet; static signed char irq_translate[] = { -1, -1, -1, 0, 1, 2, -1, 3 }; if (trix_boot_len == 0) return 0; /* No boot code -> no fun */ if ((hw_config->io_base & 0xffffff8f) != 0x200) return 0; tmp = hw_config->irq; if (tmp > 7) return 0; if (irq_translate[tmp] == -1) return 0; tmp = hw_config->dma; if (tmp != 1 && tmp != 3) return 0; if (!request_region(hw_config->io_base, 16, "soundblaster")) { printk(KERN_ERR "AudioTrix: SB I/O port conflict (%x)\n", hw_config->io_base); return 0; } conf = 0x84; /* DMA and IRQ enable */ conf |= hw_config->io_base & 0x70; /* I/O address bits */ conf |= irq_translate[hw_config->irq]; if (hw_config->dma == 3) conf |= 0x08; trix_write(0x1b, conf); download_boot(hw_config->io_base); hw_config->name = "AudioTrix SB"; if (!sb_dsp_detect(hw_config, 0, 0, NULL)) { release_region(hw_config->io_base, 16); return 0; } hw_config->driver_use_1 = SB_NO_MIDI | SB_NO_MIXER | SB_NO_RECORDING; /* Prevent false alarms */ old_quiet = sb_be_quiet; sb_be_quiet = 1; sb_dsp_init(hw_config, THIS_MODULE); sb_be_quiet = old_quiet; return 1; }

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static int __init probe_trix_mpu(struct address_info *hw_config) { unsigned char conf; static int irq_bits[] = { -1, -1, -1, 1, 2, 3, -1, 4, -1, 5 }; if (hw_config->irq > 9) { printk(KERN_ERR "AudioTrix: Bad MPU IRQ %d\n", hw_config->irq); return 0; } if (irq_bits[hw_config->irq] == -1) { printk(KERN_ERR "AudioTrix: Bad MPU IRQ %d\n", hw_config->irq); return 0; } switch (hw_config->io_base) { case 0x330: conf = 0x00; break; case 0x370: conf = 0x04; break; case 0x3b0: conf = 0x08; break; case 0x3f0: conf = 0x0c; break; default: return 0; /* Invalid port */ } conf |= irq_bits[hw_config->irq] << 4; trix_write(0x19, (trix_read(0x19) & 0x83) | conf); hw_config->name = "AudioTrix Pro"; return probe_uart401(hw_config, THIS_MODULE); }

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static void __exit unload_trix_wss(struct address_info *hw_config) { int dma2 = hw_config->dma2; if (dma2 == -1) dma2 = hw_config->dma; release_region(0x390, 2); release_region(hw_config->io_base, 4); ad1848_unload(hw_config->io_base + 4, hw_config->irq, hw_config->dma, dma2, 0); sound_unload_audiodev(hw_config->slots[0]); }

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static inline void __exit unload_trix_mpu(struct address_info *hw_config) { unload_uart401(hw_config); }

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static inline void __exit unload_trix_sb(struct address_info *hw_config) { sb_dsp_unload(hw_config, mpu); }

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static struct address_info cfg; static struct address_info cfg2; static struct address_info cfg_mpu; static int sb; static int fw_load; static int __initdata io = -1; static int __initdata irq = -1; static int __initdata dma = -1; static int __initdata dma2 = -1; /* Set this for modules that need it */ static int __initdata sb_io = -1; static int __initdata sb_dma = -1; static int __initdata sb_irq = -1; static int __initdata mpu_io = -1; static int __initdata mpu_irq = -1; module_param(io, int, 0); module_param(irq, int, 0); module_param(dma, int, 0); module_param(dma2, int, 0); module_param(sb_io, int, 0); module_param(sb_dma, int, 0); module_param(sb_irq, int, 0); module_param(mpu_io, int, 0); module_param(mpu_irq, int, 0); module_param(joystick, bool, 0);
static int __init init_trix(void) { printk(KERN_INFO "MediaTrix audio driver Copyright (C) by Hannu Savolainen 1993-1996\n"); cfg.io_base = io; cfg.irq = irq; cfg.dma = dma; cfg.dma2 = dma2; cfg2.io_base = sb_io; cfg2.irq = sb_irq; cfg2.dma = sb_dma; cfg_mpu.io_base = mpu_io; cfg_mpu.irq = mpu_irq; if (cfg.io_base == -1 || cfg.dma == -1 || cfg.irq == -1) { printk(KERN_INFO "I/O, IRQ, DMA and type are mandatory\n"); return -EINVAL; } if (cfg2.io_base != -1 && (cfg2.irq == -1 || cfg2.dma == -1)) { printk(KERN_INFO "CONFIG_SB_IRQ and CONFIG_SB_DMA must be specified if SB_IO is set.\n"); return -EINVAL; } if (cfg_mpu.io_base != -1 && cfg_mpu.irq == -1) { printk(KERN_INFO "CONFIG_MPU_IRQ must be specified if MPU_IO is set.\n"); return -EINVAL; } if (!trix_boot) { fw_load = 1; trix_boot_len = mod_firmware_load("/etc/sound/trxpro.bin", (char **) &trix_boot); } if (!request_region(0x390, 2, "AudioTrix")) { printk(KERN_ERR "AudioTrix: Config port I/O conflict\n"); return -ENODEV; } if (!init_trix_wss(&cfg)) { release_region(0x390, 2); return -ENODEV; } /* * We must attach in the right order to get the firmware * loaded up in time. */ if (cfg2.io_base != -1) { sb = probe_trix_sb(&cfg2); } if (cfg_mpu.io_base != -1) mpu = probe_trix_mpu(&cfg_mpu); return 0; }

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static void __exit cleanup_trix(void) { if (fw_load) vfree(trix_boot); if (sb) unload_trix_sb(&cfg2); if (mpu) unload_trix_mpu(&cfg_mpu); unload_trix_wss(&cfg); }

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module_init(init_trix); module_exit(cleanup_trix); #ifndef MODULE
static int __init setup_trix (char *str) { /* io, irq, dma, dma2, sb_io, sb_irq, sb_dma, mpu_io, mpu_irq */ int ints[9]; str = get_options(str, ARRAY_SIZE(ints), ints); io = ints[1]; irq = ints[2]; dma = ints[3]; dma2 = ints[4]; sb_io = ints[5]; sb_irq = ints[6]; sb_dma = ints[6]; mpu_io = ints[7]; mpu_irq = ints[8]; return 1; }

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__setup("trix=", setup_trix); #endif MODULE_LICENSE("GPL");

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Directory: sound/oss
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