/* * sound/mad16.c * * Initialization code for OPTi MAD16 compatible audio chips. Including * * OPTi 82C928 MAD16 (replaced by C929) OAK OTI-601D Mozart * OPTi 82C929 MAD16 Pro * * These audio interface chips don't prduce sound themselves. They just connect * some other components (OPL-[234] and a WSS compatible codec) to the PC bus * and perform I/O, DMA and IRQ address decoding. There is also a UART for * the MPU-401 mode (not 82C928/Mozart). The Mozart chip appears to be * compatible with the 82C928 (can anybody confirm this?). * * NOTE! If you want to set CD-ROM address and/or joystick enable, define * MAD16_CONF in local.h as combination of the following bits: * * 0x01 - joystick disabled * * CD-ROM type selection (select just one): 0x00 - none 0x02 - Sony 31A * 0x04 - Mitsumi 0x06 - Panasonic (type "LaserMate", not * "SoundBlaster") 0x08 - Secondary IDE (address 0x170) 0x0a - Primary * IDE (address 0x1F0) * * For example Mitsumi with joystick disabled = 0x04|0x01 = 0x05 For example * LaserMate (for use with sbpcd) plus joystick = 0x06 * * MAD16_CDSEL: This defaults to CD I/O 0x340, no IRQ and DMA3 (DMA5 with * Mitsumi or IDE). If you like to change these, define MAD16_CDSEL with the * following bits: * * CD-ROM port: 0x00=340, 0x40=330, 0x80=360 or 0xc0=320 OPL4 select: 0x20=OPL4, * 0x00=OPL3 CD-ROM irq: 0x00=disabled, 0x04=IRQ5, 0x08=IRQ7, 0x0a=IRQ3, * 0x10=IRQ9, 0x14=IRQ10 and 0x18=IRQ11. * * CD-ROM DMA (Sony or Panasonic): 0x00=DMA3, 0x01=DMA2, 0x02=DMA1 or * 0x03=disabled or CD-ROM DMA (Mitsumi or IDE): 0x00=DMA5, 0x01=DMA6, * 0x02=DMA7 or 0x03=disabled * * For use with sbpcd, address 0x340, set MAD16_CDSEL to 0x03 or 0x23. * * Copyright by Hannu Savolainen 1995 * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. 2. * Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ #include #if defined(CONFIG_MAD16) static int already_initialized = 0; #define C928 1 #define MOZART 2 #define C929 3 /* * Registers * * The MAD16 occupies I/O ports 0xf8d to 0xf93 (fixed locations). All ports are * inactive by default. They can be activated by writing 0xE2 or 0xE3 to the * password register. The password is valid only until the next I/O read or * write. */ #define MC1_PORT 0xf8d /* SB address, CDROM interface type, joystick */ #define MC2_PORT 0xf8e /* CDROM address, IRQ, DMA, plus OPL4 bit */ #define MC3_PORT 0xf8f #define PASSWD_REG 0xf8f #define MC4_PORT 0xf90 #define MC5_PORT 0xf91 #define MC6_PORT 0xf92 #define MC7_PORT 0xf93 static int board_type = C928; static sound_os_info *mad16_osp; #ifndef DDB #define DDB(x) #endif static unsigned char mad_read(int port) { unsigned long flags; unsigned char tmp; flags = splhigh(); switch (board_type) { /* Output password */ case C928: case MOZART: outb(PASSWD_REG, 0xE2); break; case C929: outb(PASSWD_REG, 0xE3); break; } tmp = inb(port); splx(flags); return tmp; } static void mad_write(int port, int value) { unsigned long flags; flags = splhigh(); switch (board_type) { /* Output password */ case C928: case MOZART: outb(PASSWD_REG, 0xE2); break; case C929: outb(PASSWD_REG, 0xE3); break; } outb(port, (unsigned char) (value & 0xff)); splx(flags); } static int detect_mad16(void) { unsigned char tmp, tmp2; /* * Check that reading a register doesn't return bus float (0xff) when * the card is accessed using password. This may fail in case the * card is in low power mode. Normally at least the power saving mode * bit should be 0. */ if ((tmp = mad_read(MC1_PORT)) == 0xff) { DDB(printf("MC1_PORT returned 0xff\n")); return 0; } /* * Now check that the gate is closed on first I/O after writing the * password. (This is how a MAD16 compatible card works). */ if ((tmp2 = inb(MC1_PORT)) == tmp) { /* It didn't close */ DDB(printf("MC1_PORT didn't close after read (0x%02x)\n", tmp2)); return 0; } mad_write(MC1_PORT, tmp ^ 0x80); /* Togge a bit */ if ((tmp2 = mad_read(MC1_PORT)) != (tmp ^ 0x80)) { /* Compare the bit */ mad_write(MC1_PORT, tmp); /* Restore */ DDB(printf("Bit revert test failed (0x%02x, 0x%02x)\n", tmp, tmp2)); return 0; } mad_write(MC1_PORT, tmp); /* Restore */ return 1; /* Bingo */ } int probe_mad16(struct address_info * hw_config) { int i; static int valid_ports[] = {0x530, 0xe80, 0xf40, 0x604}; unsigned char tmp; unsigned char cs4231_mode = 0; int ad_flags = 0; if (already_initialized) return 0; mad16_osp = hw_config->osp; /* * Check that all ports return 0xff (bus float) when no password is * written to the password register. */ DDB(printf("--- Detecting MAD16 / Mozart ---\n")); /* * Then try to detect with the old password */ board_type = C928; DDB(printf("Detect using password = 0xE2\n")); if (!detect_mad16()) { /* No luck. Try different model */ board_type = C929; DDB(printf("Detect using password = 0xE3\n")); if (!detect_mad16()) return 0; DDB(printf("mad16.c: 82C929 detected\n")); } else { unsigned char model; if (((model = mad_read(MC3_PORT)) & 0x03) == 0x03) { DDB(printf("mad16.c: Mozart detected\n")); board_type = MOZART; } else { DDB(printf("mad16.c: 82C928 detected???\n")); board_type = C928; } } for (i = 0xf8d; i <= 0xf93; i++) DDB(printf("port %03x = %03x\n", i, mad_read(i))); /* * Set the WSS address */ tmp = 0x80; /* Enable WSS, Disable SB */ for (i = 0; i < 5; i++) { if (i > 3) { /* Not a valid port */ printf("MAD16/Mozart: Bad WSS base address 0x%x\n", hw_config->io_base); return 0; } if (valid_ports[i] == hw_config->io_base) { tmp |= i << 4; /* WSS port select bits */ break; } } /* * Set optional CD-ROM and joystick settings. */ #ifdef MAD16_CONF tmp |= ((MAD16_CONF) & 0x0f); /* CD-ROM and joystick bits */ #endif mad_write(MC1_PORT, tmp); #if defined(MAD16_CONF) && defined(MAD16_CDSEL) tmp = MAD16_CDSEL; #else tmp = 0x03; #endif #ifdef MAD16_OPL4 tmp |= 0x20; /* Enable OPL4 access */ #endif mad_write(MC2_PORT, tmp); mad_write(MC3_PORT, 0xf0); /* Disable SB */ if (!ad1848_detect(hw_config->io_base + 4, &ad_flags, mad16_osp)) return 0; if (ad_flags & (AD_F_CS4231 | AD_F_CS4248)) cs4231_mode = 0x02; /* CS4248/CS4231 sync delay switch */ if (board_type == C929) { mad_write(MC4_PORT, 0xa2); mad_write(MC5_PORT, 0xA5 | cs4231_mode); mad_write(MC6_PORT, 0x03); /* Disable MPU401 */ } else { mad_write(MC4_PORT, 0x02); mad_write(MC5_PORT, 0x30 | cs4231_mode); } for (i = 0xf8d; i <= 0xf93; i++) DDB(printf("port %03x after init = %03x\n", i, mad_read(i))); /* * Verify the WSS parameters */ if (0) { printf("MSS: I/O port conflict\n"); 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. */ if ((inb(hw_config->io_base + 3) & 0x3f) != 0x04 && (inb(hw_config->io_base + 3) & 0x3f) != 0x00) { DDB(printf("No MSS signature detected on port 0x%x (0x%x)\n", hw_config->io_base, inb(hw_config->io_base + 3))); return 0; } if (hw_config->irq > 11) { printf("MSS: Bad IRQ %d\n", hw_config->irq); return 0; } if (hw_config->dma != 0 && hw_config->dma != 1 && hw_config->dma != 3) { printf("MSS: Bad DMA %d\n", hw_config->dma); return 0; } /* * Check that DMA0 is not in use with a 8 bit board. */ if (hw_config->dma == 0 && inb(hw_config->io_base + 3) & 0x80) { printf("MSS: Can't use DMA0 with a 8 bit card/slot\n"); return 0; } if (hw_config->irq > 7 && hw_config->irq != 9 && inb(hw_config->io_base + 3) & 0x80) { printf("MSS: Can't use IRQ%d with a 8 bit card/slot\n", hw_config->irq); return 0; } return 1; } void attach_mad16(struct address_info * hw_config) { static char interrupt_bits[12] = { -1, -1, -1, -1, -1, -1, -1, 0x08, -1, 0x10, 0x18, 0x20 }; char bits; static char dma_bits[4] = { 1, 2, 0, 3 }; int config_port = hw_config->io_base + 0, version_port = hw_config->io_base + 3; int ad_flags = 0, dma = hw_config->dma, dma2 = hw_config->dma2; unsigned char dma2_bit = 0; already_initialized = 1; if (!ad1848_detect(hw_config->io_base + 4, &ad_flags, mad16_osp)) return; /* * Set the IRQ and DMA addresses. */ bits = interrupt_bits[hw_config->irq]; if (bits == -1) return; outb(config_port, bits | 0x40); if ((inb(version_port) & 0x40) == 0) printf("[IRQ Conflict?]"); /* * Handle the capture DMA channel */ if (ad_flags & AD_F_CS4231 && dma2 != -1 && dma2 != dma) { if ((dma == 0 && dma2 == 1) || (dma == 1 && dma2 == 0) || (dma == 3 && dma2 == 0)) { dma2_bit = 0x04; /* Enable capture DMA */ } else { printf("MAD16: Invalid capture DMA\n"); dma2 = dma; } } else dma2 = dma; outb(config_port, bits | dma_bits[dma] | dma2_bit); /* Write IRQ+DMA setup */ ad1848_init("MAD16 WSS", hw_config->io_base + 4, hw_config->irq, dma, dma2, 0, hw_config->osp); } void attach_mad16_mpu(struct address_info * hw_config) { if (board_type < C929) {/* Early chip. No MPU support. Just SB MIDI */ #ifdef CONFIG_MIDI if (mad_read(MC1_PORT) & 0x20) hw_config->io_base = 0x240; else hw_config->io_base = 0x220; return mad16_sb_dsp_init(hw_config); #else return 0; #endif } #if (defined(CONFIG_MPU401) || defined(CONFIG_MPU_EMU)) && defined(CONFIG_MIDI) if (!already_initialized) return; attach_mpu401(hw_config); #endif } int probe_mad16_mpu(struct address_info * hw_config) { #if (defined(CONFIG_MPU401) || defined(CONFIG_MPU_EMU)) && defined(CONFIG_MIDI) static int mpu_attached = 0; static int valid_ports[] = {0x330, 0x320, 0x310, 0x300}; static short valid_irqs[] = {9, 10, 5, 7}; unsigned char tmp; int i; /* A variable with secret power */ if (!already_initialized) /* The MSS port must be initialized * first */ return 0; if (mpu_attached) /* Don't let them call this twice */ return 0; mpu_attached = 1; if (board_type < C929) {/* Early chip. No MPU support. Just SB MIDI */ #ifdef CONFIG_MIDI unsigned char tmp; tmp = mad_read(MC3_PORT); /* * MAD16 SB base is defined by the WSS base. It cannot be * changed alone. Ignore configured I/O base. Use the active * setting. */ if (mad_read(MC1_PORT) & 0x20) hw_config->io_base = 0x240; else hw_config->io_base = 0x220; switch (hw_config->irq) { case 5: tmp = (tmp & 0x3f) | 0x80; break; case 7: tmp = (tmp & 0x3f); break; case 11: tmp = (tmp & 0x3f) | 0x40; break; default: printf("mad16/Mozart: Invalid MIDI IRQ\n"); return 0; } mad_write(MC3_PORT, tmp | 0x04); return mad16_sb_dsp_detect(hw_config); #else return 0; #endif } tmp = 0x83; /* MPU-401 enable */ /* * Set the MPU base bits */ for (i = 0; i < 5; i++) { if (i > 3) { /* Out of array bounds */ printf("MAD16 / Mozart: Invalid MIDI port 0x%x\n", hw_config->io_base); return 0; } if (valid_ports[i] == hw_config->io_base) { tmp |= i << 5; break; } } /* * Set the MPU IRQ bits */ for (i = 0; i < 5; i++) { if (i > 3) { /* Out of array bounds */ printf("MAD16 / Mozart: Invalid MIDI IRQ %d\n", hw_config->irq); return 0; } if (valid_irqs[i] == hw_config->irq) { tmp |= i << 3; break; } } mad_write(MC6_PORT, tmp); /* Write MPU401 config */ return probe_mpu401(hw_config); #else return 0; #endif } /* That's all folks */ #endif