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-rw-r--r--sys/i386/isa/sound/sscape.c1061
1 files changed, 1061 insertions, 0 deletions
diff --git a/sys/i386/isa/sound/sscape.c b/sys/i386/isa/sound/sscape.c
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+++ b/sys/i386/isa/sound/sscape.c
@@ -0,0 +1,1061 @@
+/*
+ * sound/sscape.c
+ *
+ * Low level driver for Ensoniq Soundscape
+ *
+ * Copyright by Hannu Savolainen 1994
+ *
+ * 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 <i386/isa/sound/sound_config.h>
+
+#if NSSCAPE > 0
+
+#include <i386/isa/sound/coproc.h>
+
+#define EXCLUDE_NATIVE_PCM
+
+/*
+ * I/O ports
+ */
+#define MIDI_DATA 0
+#define MIDI_CTRL 1
+#define HOST_CTRL 2
+#define TX_READY 0x02
+#define RX_READY 0x01
+#define HOST_DATA 3
+#define ODIE_ADDR 4
+#define ODIE_DATA 5
+
+/*
+ * Indirect registers
+ */
+#define GA_INTSTAT_REG 0
+#define GA_INTENA_REG 1
+#define GA_DMAA_REG 2
+#define GA_DMAB_REG 3
+#define GA_INTCFG_REG 4
+#define GA_DMACFG_REG 5
+#define GA_CDCFG_REG 6
+#define GA_SMCFGA_REG 7
+#define GA_SMCFGB_REG 8
+#define GA_HMCTL_REG 9
+
+/*
+ * DMA channel identifiers (A and B)
+ */
+#define SSCAPE_DMA_A 0
+#define SSCAPE_DMA_B 1
+
+#define PORT(name) (devc->base+name)
+
+/*
+ * Host commands recognized by the OBP microcode
+ */
+#define CMD_GEN_HOST_ACK 0x80
+#define CMD_GEN_MPU_ACK 0x81
+#define CMD_GET_BOARD_TYPE 0x82
+#define CMD_SET_CONTROL 0x88
+#define CMD_GET_CONTROL 0x89
+#define CTL_MASTER_VOL 0
+#define CTL_MIC_MODE 2
+#define CTL_SYNTH_VOL 4
+#define CTL_WAVE_VOL 7
+#define CMD_SET_MT32 0x96
+#define CMD_GET_MT32 0x97
+#define CMD_SET_EXTMIDI 0x9b
+#define CMD_GET_EXTMIDI 0x9c
+
+#define CMD_ACK 0x80
+
+typedef struct sscape_info {
+ int base, irq, dma;
+ int ok; /* Properly detected */
+ int failed;
+ int dma_allocated;
+ int my_audiodev;
+ int opened;
+ sound_os_info *osp;
+}
+
+ sscape_info;
+static struct sscape_info dev_info =
+{0};
+static struct sscape_info *devc = &dev_info;
+
+static int *sscape_sleeper = NULL;
+static volatile struct snd_wait sscape_sleep_flag =
+{0};
+
+/* Some older cards have assigned interrupt bits differently than new ones */
+static char valid_interrupts_old[] =
+{9, 7, 5, 15};
+
+static char valid_interrupts_new[] =
+{9, 5, 7, 10};
+
+static char *valid_interrupts = valid_interrupts_new;
+
+#ifdef REVEAL_SPEA
+static char old_hardware = 1;
+
+#else
+static char old_hardware = 0;
+
+#endif
+
+static u_char
+sscape_read(struct sscape_info * devc, int reg)
+{
+ u_long flags;
+ u_char val;
+
+ flags = splhigh();
+ outb(PORT(ODIE_ADDR), reg);
+ val = inb(PORT(ODIE_DATA));
+ splx(flags);
+ return val;
+}
+
+static void
+sscape_write(struct sscape_info * devc, int reg, int data)
+{
+ u_long flags;
+
+ flags = splhigh();
+ outb(PORT(ODIE_ADDR), reg);
+ outb(PORT(ODIE_DATA), data);
+ splx(flags);
+}
+
+static void
+host_open(struct sscape_info * devc)
+{
+ outb(PORT(HOST_CTRL), 0x00); /* Put the board to the host mode */
+}
+
+static void
+host_close(struct sscape_info * devc)
+{
+ outb(PORT(HOST_CTRL), 0x03); /* Put the board to the MIDI mode */
+}
+
+static int
+host_write(struct sscape_info * devc, u_char *data, int count)
+{
+ u_long flags;
+ int i, timeout_val;
+
+ flags = splhigh();
+
+ /*
+ * Send the command and data bytes
+ */
+
+ for (i = 0; i < count; i++) {
+ for (timeout_val = 10000; timeout_val > 0; timeout_val--)
+ if (inb(PORT(HOST_CTRL)) & TX_READY)
+ break;
+
+ if (timeout_val <= 0) {
+ splx(flags);
+ return 0;
+ }
+ outb(PORT(HOST_DATA), data[i]);
+ }
+
+
+ splx(flags);
+
+ return 1;
+}
+
+static int
+host_read(struct sscape_info * devc)
+{
+ u_long flags;
+ int timeout_val;
+ u_char data;
+
+ flags = splhigh();
+
+ /*
+ * Read a byte
+ */
+
+ for (timeout_val = 10000; timeout_val > 0; timeout_val--)
+ if (inb(PORT(HOST_CTRL)) & RX_READY)
+ break;
+
+ if (timeout_val <= 0) {
+ splx(flags);
+ return -1;
+ }
+ data = inb(PORT(HOST_DATA));
+
+ splx(flags);
+
+ return data;
+}
+
+static int
+host_command1(struct sscape_info * devc, int cmd)
+{
+ u_char buf[10];
+
+ buf[0] = (u_char) (cmd & 0xff);
+
+ return host_write(devc, buf, 1);
+}
+
+static int
+host_command2(struct sscape_info * devc, int cmd, int parm1)
+{
+ u_char buf[10];
+
+ buf[0] = (u_char) (cmd & 0xff);
+ buf[1] = (u_char) (parm1 & 0xff);
+
+ return host_write(devc, buf, 2);
+}
+
+static int
+host_command3(struct sscape_info * devc, int cmd, int parm1, int parm2)
+{
+ u_char buf[10];
+
+ buf[0] = (u_char) (cmd & 0xff);
+ buf[1] = (u_char) (parm1 & 0xff);
+ buf[2] = (u_char) (parm2 & 0xff);
+
+ return host_write(devc, buf, 3);
+}
+
+static void
+set_mt32(struct sscape_info * devc, int value)
+{
+ host_open(devc);
+ host_command2(devc, CMD_SET_MT32,
+ value ? 1 : 0);
+ if (host_read(devc) != CMD_ACK) {
+ printf("SNDSCAPE: Setting MT32 mode failed\n");
+ }
+ host_close(devc);
+}
+
+static void
+set_control(struct sscape_info * devc, int ctrl, int value)
+{
+ host_open(devc);
+ host_command3(devc, CMD_SET_CONTROL, ctrl, value);
+ if (host_read(devc) != CMD_ACK) {
+ printf("SNDSCAPE: Setting control (%d) failed\n", ctrl);
+ }
+ host_close(devc);
+}
+
+static int
+get_board_type(struct sscape_info * devc)
+{
+ int tmp;
+
+ host_open(devc);
+ if (!host_command1(devc, CMD_GET_BOARD_TYPE))
+ tmp = -1;
+ else
+ tmp = host_read(devc);
+ host_close(devc);
+ return tmp;
+}
+
+void
+sscapeintr(int irq)
+{
+ u_char bits, tmp;
+
+ DEB(printf("sscapeintr(0x%02x)\n", (bits = sscape_read(devc, GA_INTSTAT_REG))));
+ if ((sscape_sleep_flag.mode & WK_SLEEP)) {
+ sscape_sleep_flag.mode = WK_WAKEUP;
+ wakeup(sscape_sleeper);
+ }
+ if (bits & 0x02) { /* Host interface interrupt */
+ printf("SSCAPE: Host interrupt, data=%02x\n", host_read(devc));
+ }
+#if (defined(CONFIG_MPU401) || defined(CONFIG_MPU_EMU)) && defined(CONFIG_MIDI)
+ if (bits & 0x01) {
+ static int debug = 0;
+
+ mpuintr(irq);
+ if (debug++ > 10) { /* Temporary debugging hack */
+ sscape_write(devc, GA_INTENA_REG, 0x00); /* Disable all interr. */
+ }
+ }
+#endif
+
+ /*
+ * Acknowledge interrupts (toggle the interrupt bits)
+ */
+
+ tmp = sscape_read(devc, GA_INTENA_REG);
+ sscape_write(devc, GA_INTENA_REG, (~bits & 0x0e) | (tmp & 0xf1));
+}
+
+
+static void
+do_dma(struct sscape_info * devc, int dma_chan, u_long buf, int blk_size, int mode)
+{
+ u_char temp;
+
+ if (dma_chan != SSCAPE_DMA_A) {
+ printf("SSCAPE: Tried to use DMA channel != A. Why?\n");
+ return;
+ }
+ DMAbuf_start_dma(devc->my_audiodev, buf, blk_size, mode);
+
+ temp = devc->dma << 4; /* Setup DMA channel select bits */
+ if (devc->dma <= 3)
+ temp |= 0x80; /* 8 bit DMA channel */
+
+ temp |= 1; /* Trigger DMA */
+ sscape_write(devc, GA_DMAA_REG, temp);
+ temp &= 0xfe; /* Clear DMA trigger */
+ sscape_write(devc, GA_DMAA_REG, temp);
+}
+
+static int
+verify_mpu(struct sscape_info * devc)
+{
+ /*
+ * The SoundScape board could be in three modes (MPU, 8250 and host).
+ * If the card is not in the MPU mode, enabling the MPU driver will
+ * cause infinite loop (the driver believes that there is always some
+ * received data in the buffer.
+ *
+ * Detect this by looking if there are more than 10 received MIDI bytes
+ * (0x00) in the buffer.
+ */
+
+ int i;
+
+ for (i = 0; i < 10; i++) {
+ if (inb(devc->base + HOST_CTRL) & 0x80)
+ return 1;
+
+ if (inb(devc->base) != 0x00)
+ return 1;
+ }
+
+ printf("SoundScape: The device is not in the MPU-401 mode\n");
+ return 0;
+}
+
+static int
+sscape_coproc_open(void *dev_info, int sub_device)
+{
+ if (sub_device == COPR_MIDI) {
+ set_mt32(devc, 0);
+ if (!verify_mpu(devc))
+ return -(EIO);
+ }
+ sscape_sleep_flag.aborting = 0;
+ sscape_sleep_flag.mode = WK_NONE;
+ return 0;
+}
+
+static void
+sscape_coproc_close(void *dev_info, int sub_device)
+{
+ struct sscape_info *devc = dev_info;
+ u_long flags;
+
+ flags = splhigh();
+ if (devc->dma_allocated) {
+ sscape_write(devc, GA_DMAA_REG, 0x20); /* DMA channel disabled */
+#ifdef CONFIG_NATIVE_PCM
+#endif
+ devc->dma_allocated = 0;
+ }
+ sscape_sleep_flag.aborting = 0;
+ sscape_sleep_flag.mode = WK_NONE;
+ splx(flags);
+
+ return;
+}
+
+static void
+sscape_coproc_reset(void *dev_info)
+{
+}
+
+static int
+sscape_download_boot(struct sscape_info * devc, u_char *block, int size, int flag)
+{
+ u_long flags;
+ u_char temp;
+ int done, timeout_val;
+
+ if (flag & CPF_FIRST) {
+ /*
+ * First block. Have to allocate DMA and to reset the board
+ * before continuing.
+ */
+
+ flags = splhigh();
+ if (devc->dma_allocated == 0) {
+ devc->dma_allocated = 1;
+ }
+ splx(flags);
+
+ sscape_write(devc, GA_HMCTL_REG,
+ (temp = sscape_read(devc, GA_HMCTL_REG)) & 0x3f); /* Reset */
+
+ for (timeout_val = 10000; timeout_val > 0; timeout_val--)
+ sscape_read(devc, GA_HMCTL_REG); /* Delay */
+
+ /* Take board out of reset */
+ sscape_write(devc, GA_HMCTL_REG,
+ (temp = sscape_read(devc, GA_HMCTL_REG)) | 0x80);
+ }
+ /*
+ * Transfer one code block using DMA
+ */
+ bcopy(block, audio_devs[devc->my_audiodev]->dmap_out->raw_buf, size);
+
+ flags = splhigh();
+ /******** INTERRUPTS DISABLED NOW ********/
+ do_dma(devc, SSCAPE_DMA_A,
+ audio_devs[devc->my_audiodev]->dmap_out->raw_buf_phys,
+ size, 1);
+
+ /*
+ * Wait until transfer completes.
+ */
+ sscape_sleep_flag.aborting = 0;
+ sscape_sleep_flag.mode = WK_NONE;
+ done = 0;
+ timeout_val = 100;
+ while (!done && timeout_val-- > 0) {
+ int chn;
+ sscape_sleeper = &chn;
+ DO_SLEEP(chn, sscape_sleep_flag, 1);
+
+ done = 1;
+ }
+
+ splx(flags);
+ if (!done)
+ return 0;
+
+ if (flag & CPF_LAST) {
+ /*
+ * Take the board out of reset
+ */
+ outb(PORT(HOST_CTRL), 0x00);
+ outb(PORT(MIDI_CTRL), 0x00);
+
+ temp = sscape_read(devc, GA_HMCTL_REG);
+ temp |= 0x40;
+ sscape_write(devc, GA_HMCTL_REG, temp); /* Kickstart the board */
+
+ /*
+ * Wait until the ODB wakes up
+ */
+
+ flags = splhigh();
+ done = 0;
+ timeout_val = 5 * hz;
+ while (!done && timeout_val-- > 0) {
+ int chn;
+
+ sscape_sleeper = &chn;
+ DO_SLEEP(chn, sscape_sleep_flag, 1);
+
+ if (inb(PORT(HOST_DATA)) == 0xff) /* OBP startup acknowledge */
+ done = 1;
+ }
+ splx(flags);
+ if (!done) {
+ printf("SoundScape: The OBP didn't respond after code download\n");
+ return 0;
+ }
+ flags = splhigh();
+ done = 0;
+ timeout_val = 5 * hz;
+ while (!done && timeout_val-- > 0) {
+ int chn;
+
+ sscape_sleeper = &chn;
+ DO_SLEEP(chn, sscape_sleep_flag, 1);
+
+ if (inb(PORT(HOST_DATA)) == 0xfe) /* Host startup acknowledge */
+ done = 1;
+ }
+ splx(flags);
+ if (!done) {
+ printf("SoundScape: OBP Initialization failed.\n");
+ return 0;
+ }
+ printf("SoundScape board of type %d initialized OK\n",
+ get_board_type(devc));
+
+ set_control(devc, CTL_MASTER_VOL, 100);
+ set_control(devc, CTL_SYNTH_VOL, 100);
+
+#ifdef SSCAPE_DEBUG3
+ /*
+ * Temporary debugging aid. Print contents of the registers
+ * after downloading the code.
+ */
+ {
+ int i;
+
+ for (i = 0; i < 13; i++)
+ printf("I%d = %02x (new value)\n", i, sscape_read(devc, i));
+ }
+#endif
+
+ }
+ return 1;
+}
+
+static int
+download_boot_block(void *dev_info, copr_buffer * buf)
+{
+ if (buf->len <= 0 || buf->len > sizeof(buf->data))
+ return -(EINVAL);
+
+ if (!sscape_download_boot(devc, buf->data, buf->len, buf->flags)) {
+ printf("SSCAPE: Unable to load microcode block to the OBP.\n");
+ return -(EIO);
+ }
+ return 0;
+}
+
+static int
+sscape_coproc_ioctl(void *dev_info, u_int cmd, ioctl_arg arg, int local)
+{
+
+ switch (cmd) {
+ case SNDCTL_COPR_RESET:
+ sscape_coproc_reset(dev_info);
+ return 0;
+ break;
+
+ case SNDCTL_COPR_LOAD:
+ {
+ copr_buffer *buf;
+ int err;
+
+ buf = (copr_buffer *) malloc(sizeof(copr_buffer), M_TEMP, M_WAITOK);
+ if (buf == NULL)
+ return -(ENOSPC);
+ bcopy(&(((char *) arg)[0]), (char *) buf, sizeof(*buf));
+ err = download_boot_block(dev_info, buf);
+ free(buf, M_TEMP);
+ return err;
+ }
+ break;
+
+ default:
+ return -(EINVAL);
+ }
+
+}
+
+static coproc_operations sscape_coproc_operations =
+{
+ "SoundScape M68K",
+ sscape_coproc_open,
+ sscape_coproc_close,
+ sscape_coproc_ioctl,
+ sscape_coproc_reset,
+ &dev_info
+};
+
+static int
+sscape_audio_open(int dev, int mode)
+{
+ u_long flags;
+ sscape_info *devc = (sscape_info *) audio_devs[dev]->devc;
+
+ flags = splhigh();
+ if (devc->opened) {
+ splx(flags);
+ return -(EBUSY);
+ }
+ devc->opened = 1;
+ splx(flags);
+#ifdef SSCAPE_DEBUG4
+ /*
+ * Temporary debugging aid. Print contents of the registers when the
+ * device is opened.
+ */
+ {
+ int i;
+
+ for (i = 0; i < 13; i++)
+ printf("I%d = %02x\n", i, sscape_read(devc, i));
+ }
+#endif
+
+ return 0;
+}
+
+static void
+sscape_audio_close(int dev)
+{
+ u_long flags;
+ sscape_info *devc = (sscape_info *) audio_devs[dev]->devc;
+
+ DEB(printf("sscape_audio_close(void)\n"));
+
+ flags = splhigh();
+
+ devc->opened = 0;
+
+ splx(flags);
+}
+
+static int
+set_speed(sscape_info * devc, int arg)
+{
+ return 8000;
+}
+
+static int
+set_channels(sscape_info * devc, int arg)
+{
+ return 1;
+}
+
+static int
+set_format(sscape_info * devc, int arg)
+{
+ return AFMT_U8;
+}
+
+static int
+sscape_audio_ioctl(int dev, u_int cmd, ioctl_arg arg, int local)
+{
+ sscape_info *devc = (sscape_info *) audio_devs[dev]->devc;
+
+ switch (cmd) {
+ case SOUND_PCM_WRITE_RATE:
+ if (local)
+ return set_speed(devc, (int) arg);
+ return *(int *) arg = set_speed(devc, (*(int *) arg));
+
+ case SOUND_PCM_READ_RATE:
+ if (local)
+ return 8000;
+ return *(int *) arg = 8000;
+
+ case SNDCTL_DSP_STEREO:
+ if (local)
+ return set_channels(devc, (int) arg + 1) - 1;
+ return *(int *) arg = set_channels(devc, (*(int *) arg) + 1) - 1;
+
+ case SOUND_PCM_WRITE_CHANNELS:
+ if (local)
+ return set_channels(devc, (int) arg);
+ return *(int *) arg = set_channels(devc, (*(int *) arg));
+
+ case SOUND_PCM_READ_CHANNELS:
+ if (local)
+ return 1;
+ return *(int *) arg = 1;
+
+ case SNDCTL_DSP_SAMPLESIZE:
+ if (local)
+ return set_format(devc, (int) arg);
+ return *(int *) arg = set_format(devc, (*(int *) arg));
+
+ case SOUND_PCM_READ_BITS:
+ if (local)
+ return 8;
+ return *(int *) arg = 8;
+
+ default:;
+ }
+ return -(EINVAL);
+}
+
+static void
+sscape_audio_output_block(int dev, u_long buf, int count, int intrflag, int dma_restart)
+{
+}
+
+static void
+sscape_audio_start_input(int dev, u_long buf, int count, int intrflag, int dma_restart)
+{
+}
+
+static int
+sscape_audio_prepare_for_input(int dev, int bsize, int bcount)
+{
+ return 0;
+}
+
+static int
+sscape_audio_prepare_for_output(int dev, int bsize, int bcount)
+{
+ return 0;
+}
+
+static void
+sscape_audio_halt(int dev)
+{
+}
+
+static void
+sscape_audio_reset(int dev)
+{
+ sscape_audio_halt(dev);
+}
+
+
+#if !defined(EXCLUDE_NATIVE_PCM) && defined(CONFIG_AUDIO)
+static struct audio_operations sscape_audio_operations =
+{
+ "Not functional",
+ 0,
+ AFMT_U8 | AFMT_S16_LE,
+ NULL,
+ sscape_audio_open,
+ sscape_audio_close,
+ sscape_audio_output_block,
+ sscape_audio_start_input,
+ sscape_audio_ioctl,
+ sscape_audio_prepare_for_input,
+ sscape_audio_prepare_for_output,
+ sscape_audio_reset,
+ sscape_audio_halt,
+ NULL,
+ NULL
+};
+#endif /* !defined(EXCLUDE_NATIVE_PCM) && defined(CONFIG_AUDIO) */
+
+static int sscape_detected = 0;
+
+void
+attach_sscape(struct address_info * hw_config)
+{
+#ifndef SSCAPE_REGS
+ /*
+ * Config register values for Spea/V7 Media FX and Ensoniq S-2000.
+ * These values are card dependent. If you have another SoundScape
+ * based card, you have to find the correct values. Do the following:
+ * - Compile this driver with SSCAPE_DEBUG1 defined. - Shut down and
+ * power off your machine. - Boot with DOS so that the SSINIT.EXE
+ * program is run. - Warm boot to {Linux|SYSV|BSD} and write down the
+ * lines displayed when detecting the SoundScape. - Modify the
+ * following list to use the values printed during boot. Undefine the
+ * SSCAPE_DEBUG1
+ */
+#define SSCAPE_REGS { \
+/* I0 */ 0x00, \
+ 0xf0, /* Note! Ignored. Set always to 0xf0 */ \
+ 0x20, /* Note! Ignored. Set always to 0x20 */ \
+ 0x20, /* Note! Ignored. Set always to 0x20 */ \
+ 0xf5, /* Ignored */ \
+ 0x10, \
+ 0x00, \
+ 0x2e, /* I7 MEM config A. Likely to vary between models */ \
+ 0x00, /* I8 MEM config B. Likely to vary between models */ \
+/* I9 */ 0x40 /* Ignored */ \
+ }
+#endif
+
+ u_long flags;
+ static u_char regs[10] = SSCAPE_REGS;
+
+ int i, irq_bits = 0xff;
+
+ if (sscape_detected != hw_config->io_base)
+ return;
+
+ if (old_hardware) {
+ valid_interrupts = valid_interrupts_old;
+ conf_printf("Ensoniq Soundscape (old)", hw_config);
+ } else
+ conf_printf("Ensoniq Soundscape", hw_config);
+
+ for (i = 0; i < sizeof(valid_interrupts); i++)
+ if (hw_config->irq == valid_interrupts[i]) {
+ irq_bits = i;
+ break;
+ }
+ if (hw_config->irq > 15 || (regs[4] = irq_bits == 0xff)) {
+ printf("Invalid IRQ%d\n", hw_config->irq);
+ return;
+ }
+ flags = splhigh();
+
+ for (i = 1; i < 10; i++)
+ switch (i) {
+ case 1: /* Host interrupt enable */
+ sscape_write(devc, i, 0xf0); /* All interrupts enabled */
+ break;
+
+ case 2: /* DMA A status/trigger register */
+ case 3: /* DMA B status/trigger register */
+ sscape_write(devc, i, 0x20); /* DMA channel disabled */
+ break;
+
+ case 4: /* Host interrupt config reg */
+ sscape_write(devc, i, 0xf0 | (irq_bits << 2) | irq_bits);
+ break;
+
+ case 5: /* Don't destroy CD-ROM DMA config bits (0xc0) */
+ sscape_write(devc, i, (regs[i] & 0x3f) |
+ (sscape_read(devc, i) & 0xc0));
+ break;
+
+ case 6: /* CD-ROM config. Don't touch. */
+ break;
+
+ case 9: /* Master control reg. Don't modify CR-ROM
+ * bits. Disable SB emul */
+ sscape_write(devc, i, (sscape_read(devc, i) & 0xf0) | 0x00);
+ break;
+
+ default:
+ sscape_write(devc, i, regs[i]);
+ }
+
+ splx(flags);
+
+#ifdef SSCAPE_DEBUG2
+ /*
+ * Temporary debugging aid. Print contents of the registers after
+ * changing them.
+ */
+ {
+ int i;
+
+ for (i = 0; i < 13; i++)
+ printf("I%d = %02x (new value)\n", i, sscape_read(devc, i));
+ }
+#endif
+
+#if defined(CONFIG_MIDI) && defined(CONFIG_MPU_EMU)
+ if (probe_mpu401(hw_config))
+ hw_config->always_detect = 1;
+ {
+ int prev_devs;
+
+ prev_devs = num_midis;
+ attach_mpu401(hw_config);
+
+ if (num_midis == (prev_devs + 1)) /* The MPU driver
+ * installed itself */
+ midi_devs[prev_devs]->coproc = &sscape_coproc_operations;
+ }
+#endif
+
+#ifndef EXCLUDE_NATIVE_PCM
+ /* Not supported yet */
+
+#ifdef CONFIG_AUDIO
+ if (num_audiodevs < MAX_AUDIO_DEV) {
+ int my_dev;
+
+ audio_devs[my_dev = num_audiodevs++] = &sscape_audio_operations;
+ audio_devs[my_dev]->dmachan1 = hw_config->dma;
+ audio_devs[my_dev]->buffsize = DSP_BUFFSIZE;
+ audio_devs[my_dev]->devc = devc;
+ devc->my_audiodev = my_dev;
+ devc->opened = 0;
+ audio_devs[my_dev]->coproc = &sscape_coproc_operations;
+ if (snd_set_irq_handler(hw_config->irq, sscapeintr, devc->osp) < 0)
+ printf("Error: Can't allocate IRQ for SoundScape\n");
+ sscape_write(devc, GA_INTENA_REG, 0x80); /* Master IRQ enable */
+ } else
+ printf("SoundScape: More than enough audio devices detected\n");
+#endif
+#endif
+ devc->ok = 1;
+ devc->failed = 0;
+ return;
+}
+
+int
+probe_sscape(struct address_info * hw_config)
+{
+ u_char save;
+
+ devc->failed = 1;
+ devc->base = hw_config->io_base;
+ devc->irq = hw_config->irq;
+ devc->dma = hw_config->dma;
+ devc->osp = hw_config->osp;
+
+ if (sscape_detected != 0 && sscape_detected != hw_config->io_base)
+ return 0;
+
+ /*
+ * First check that the address register of "ODIE" is there and that
+ * it has exactly 4 writeable bits. First 4 bits
+ */
+ if ((save = inb(PORT(ODIE_ADDR))) & 0xf0)
+ return 0;
+
+ outb(PORT(ODIE_ADDR), 0x00);
+ if (inb(PORT(ODIE_ADDR)) != 0x00)
+ return 0;
+
+ outb(PORT(ODIE_ADDR), 0xff);
+ if (inb(PORT(ODIE_ADDR)) != 0x0f)
+ return 0;
+
+ outb(PORT(ODIE_ADDR), save);
+
+ /*
+ * Now verify that some indirect registers return zero on some bits.
+ * This may break the driver with some future revisions of "ODIE"
+ * but...
+ */
+
+ if (sscape_read(devc, 0) & 0x0c)
+ return 0;
+
+ if (sscape_read(devc, 1) & 0x0f)
+ return 0;
+
+ if (sscape_read(devc, 5) & 0x0f)
+ return 0;
+
+#ifdef SSCAPE_DEBUG1
+ /*
+ * Temporary debugging aid. Print contents of the registers before
+ * changing them.
+ */
+ {
+ int i;
+
+ for (i = 0; i < 13; i++)
+ printf("I%d = %02x (old value)\n", i, sscape_read(devc, i));
+ }
+#endif
+
+ if (old_hardware) { /* Check that it's really an old Spea/Reveal card. */
+ u_char tmp;
+ int cc;
+
+ if (!((tmp = sscape_read(devc, GA_HMCTL_REG)) & 0xc0)) {
+ sscape_write(devc, GA_HMCTL_REG, tmp | 0x80);
+ for (cc = 0; cc < 200000; ++cc)
+ inb(devc->base + ODIE_ADDR);
+ } else
+ old_hardware = 0;
+ }
+ if (0) {
+ printf("sscape.c: Can't allocate DMA channel\n");
+ return 0;
+ }
+ sscape_detected = hw_config->io_base;
+
+ return 1;
+}
+
+int
+probe_ss_mss(struct address_info * hw_config)
+{
+ int i, irq_bits = 0xff;
+
+ if (devc->failed)
+ return 0;
+
+ if (devc->ok == 0) {
+ printf("SoundScape: Invalid initialization order.\n");
+ return 0;
+ }
+ for (i = 0; i < sizeof(valid_interrupts); i++)
+ if (hw_config->irq == valid_interrupts[i]) {
+ irq_bits = i;
+ break;
+ }
+ if (hw_config->irq > 15 || irq_bits == 0xff) {
+ printf("SoundScape: Invalid MSS IRQ%d\n", hw_config->irq);
+ return 0;
+ }
+ return ad1848_detect(hw_config->io_base, NULL, hw_config->osp);
+}
+
+void
+attach_ss_mss(struct address_info * hw_config)
+{
+ /*
+ * This routine configures the SoundScape card for use with the Win
+ * Sound System driver. The AD1848 codec interface uses the CD-ROM
+ * config registers of the "ODIE".
+ */
+
+ int i, irq_bits = 0xff;
+
+#ifndef CONFIG_NATIVE_PCM
+ int prev_devs = num_audiodevs;
+#endif
+
+ /*
+ * Setup the DMA polarity.
+ */
+ sscape_write(devc, GA_DMACFG_REG, 0x50);
+
+ /*
+ * Take the gate-arry off of the DMA channel.
+ */
+ sscape_write(devc, GA_DMAB_REG, 0x20);
+
+ /*
+ * Init the AD1848 (CD-ROM) config reg.
+ */
+
+ for (i = 0; i < sizeof(valid_interrupts); i++)
+ if (hw_config->irq == valid_interrupts[i]) {
+ irq_bits = i;
+ break;
+ }
+ sscape_write(devc, GA_CDCFG_REG, 0x89 | (hw_config->dma << 4) |
+ (irq_bits << 1));
+
+ if (hw_config->irq == devc->irq)
+ printf("SoundScape: Warning! WSS mode can't share IRQ with MIDI\n");
+
+ ad1848_init("SoundScape", hw_config->io_base,
+ hw_config->irq,
+ hw_config->dma,
+ hw_config->dma,
+ 0,
+ devc->osp);
+
+#ifndef CONFIG_NATIVE_PCM
+ /* Check if the AD1848 driver installed itself */
+ if (num_audiodevs == (prev_devs + 1))
+ audio_devs[prev_devs]->coproc = &sscape_coproc_operations;
+#endif
+
+ return;
+}
+
+#endif
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