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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [drivers/] [sound/] [maui.c] - Blame information for rev 1765

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/*
 * sound/maui.c
 *
 * The low level driver for Turtle Beach Maui and Tropez.
 */
/*
 * Copyright (C) by Hannu Savolainen 1993-1996
 *
 * USS/Lite 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.
 */
#include <linux/config.h>
 
 
#define USE_SEQ_MACROS
#define USE_SIMPLE_MACROS
 
#include "sound_config.h"
 
#if defined(CONFIG_MAUI)
 
static int      maui_base = 0x330;
 
static volatile int irq_ok = 0;
static int     *maui_osp;
 
#define HOST_DATA_PORT  (maui_base + 2)
#define HOST_STAT_PORT  (maui_base + 3)
#define HOST_CTRL_PORT  (maui_base + 3)
 
#define STAT_TX_INTR    0x40
#define STAT_TX_AVAIL   0x20
#define STAT_TX_IENA    0x10
#define STAT_RX_INTR    0x04
#define STAT_RX_AVAIL   0x02
#define STAT_RX_IENA    0x01
 
static int      (*orig_load_patch) (int dev, int format, const char *addr,
                                 int offs, int count, int pmgr_flag) = NULL;
 
#ifdef HAVE_MAUI_BOOT
#include "maui_boot.h"
#else
static unsigned char *maui_os = NULL;
static int      maui_osLen = 0;
 
#endif
 
static wait_handle *maui_sleeper = NULL;
static volatile struct snd_wait maui_sleep_flag =
{0};
 
static int
maui_wait (int mask)
{
  int             i;
 
/*
 * Perform a short initial wait without sleeping
 */
 
  for (i = 0; i < 100; i++)
    {
      if (inb (HOST_STAT_PORT) & mask)
        {
          return 1;
        }
    }
 
/*
 * Wait up to 15 seconds with sleeping
 */
 
  for (i = 0; i < 150; i++)
    {
      if (inb (HOST_STAT_PORT) & mask)
        {
          return 1;
        }
 
 
      {
        unsigned long   tlimit;
 
        if (HZ / 10)
          current_set_timeout (tlimit = jiffies + (HZ / 10));
        else
          tlimit = (unsigned long) -1;
        maui_sleep_flag.flags = WK_SLEEP;
        module_interruptible_sleep_on (&maui_sleeper);
        if (!(maui_sleep_flag.flags & WK_WAKEUP))
          {
            if (jiffies >= tlimit)
              maui_sleep_flag.flags |= WK_TIMEOUT;
          }
        maui_sleep_flag.flags &= ~WK_SLEEP;
      };
      if (current_got_fatal_signal ())
        return 0;
    }
 
  return 0;
}
 
static int
maui_read (void)
{
  if (maui_wait (STAT_RX_AVAIL))
    return inb (HOST_DATA_PORT);
 
  return -1;
}
 
static int
maui_write (unsigned char data)
{
  if (maui_wait (STAT_TX_AVAIL))
    {
      outb (data, HOST_DATA_PORT);
      return 1;
    }
  printk ("Maui: Write timeout\n");
 
  return 0;
}
 
void
mauiintr (int irq, void *dev_id, struct pt_regs *dummy)
{
  irq_ok = 1;
}
 
static int
download_code (void)
{
  int             i, lines = 0;
  int             eol_seen = 0, done = 0;
  int             skip = 1;
 
  printk ("Code download (%d bytes): ", maui_osLen);
 
  for (i = 0; i < maui_osLen; i++)
    {
      if (maui_os[i] != '\r')
        if (!skip || (maui_os[i] == 'S' && (i == 0 || maui_os[i - 1] == '\n')))
          {
            skip = 0;
 
            if (maui_os[i] == '\n')
              eol_seen = skip = 1;
            else if (maui_os[i] == 'S')
              {
                if (maui_os[i + 1] == '8')
                  done = 1;
                if (!maui_write (0xF1))
                  goto failure;
                if (!maui_write ('S'))
                  goto failure;
              }
            else
              {
                if (!maui_write (maui_os[i]))
                  goto failure;
              }
 
            if (eol_seen)
              {
                int             c = 0;
 
                int             n;
 
                eol_seen = 0;
 
                for (n = 0; n < 2; n++)
                  if (maui_wait (STAT_RX_AVAIL))
                    {
                      c = inb (HOST_DATA_PORT);
                      break;
                    }
 
                if (c != 0x80)
                  {
                    printk ("Download not acknowledged\n");
                    return 0;
                  }
                else if (!(lines++ % 10))
                  printk (".");
 
                if (done)
                  {
                    printk ("\nDownload complete\n");
                    return 1;
                  }
              }
          }
    }
 
failure:
 
  printk ("\nDownload failed!!!\n");
  return 0;
}
 
static int
maui_init (int irq)
{
  int             i;
  unsigned char   bits;
 
  switch (irq)
    {
    case 9:
      bits = 0x00;
      break;
    case 5:
      bits = 0x08;
      break;
    case 12:
      bits = 0x10;
      break;
    case 15:
      bits = 0x18;
      break;
 
    default:
      printk ("Maui: Invalid IRQ %d\n", irq);
      return 0;
    }
 
  outb (0x00, HOST_CTRL_PORT);  /* Reset */
 
  outb (bits, HOST_DATA_PORT);  /* Set the IRQ bits */
  outb (bits | 0x80, HOST_DATA_PORT);   /* Set the IRQ bits again? */
 
  outb (0x80, HOST_CTRL_PORT);  /* Leave reset */
  outb (0x80, HOST_CTRL_PORT);  /* Leave reset */
 
  outb (0xD0, HOST_CTRL_PORT);  /* Cause interrupt */
 
  for (i = 0; i < 1000000 && !irq_ok; i++);
 
  if (!irq_ok)
    return 0;
 
  outb (0x80, HOST_CTRL_PORT);  /* Leave reset */
 
  printk ("Turtle Beach Maui initialization\n");
 
  if (!download_code ())
    return 0;
 
  outb (0xE0, HOST_CTRL_PORT);  /* Normal operation */
 
  /* Select mpu401 mode */
 
  maui_write (0xf0);
  maui_write (1);
  if (maui_read () != 0x80)
    {
      maui_write (0xf0);
      maui_write (1);
      if (maui_read () != 0x80)
        printk ("Maui didn't acknowledge set HW mode command\n");
    }
 
  printk ("Maui initialized OK\n");
  return 1;
}
 
static int
maui_short_wait (int mask)
{
  int             i;
 
  for (i = 0; i < 1000; i++)
    {
      if (inb (HOST_STAT_PORT) & mask)
        {
          return 1;
        }
    }
 
  return 0;
}
 
int
maui_load_patch (int dev, int format, const char *addr,
                 int offs, int count, int pmgr_flag)
{
 
  struct sysex_info header;
  unsigned long   left, src_offs;
  int             hdr_size = (unsigned long) &header.data[0] - (unsigned long) &header;
  int             i;
 
  if (format == SYSEX_PATCH)    /* Handled by midi_synth.c */
    return orig_load_patch (dev, format, addr, offs, count, pmgr_flag);
 
  if (format != MAUI_PATCH)
    {
      printk ("Maui: Unknown patch format\n");
    }
 
  if (count < hdr_size)
    {
      printk ("Maui error: Patch header too short\n");
      return -(EINVAL);
    }
 
  count -= hdr_size;
 
  /*
   * Copy the header from user space but ignore the first bytes which have
   * been transferred already.
   */
 
  memcpy_fromfs (&((char *) &header)[offs], &(addr)[offs], hdr_size - offs);
 
  if (count < header.len)
    {
      printk ("Maui warning: Host command record too short (%d<%d)\n",
              count, (int) header.len);
      header.len = count;
    }
 
  left = header.len;
  src_offs = 0;
 
  for (i = 0; i < left; i++)
    {
      unsigned char   data;
 
      data = get_fs_byte (&((addr)[hdr_size + i]));
      if (i == 0 && !(data & 0x80))
        return -(EINVAL);
 
      if (maui_write (data) == -1)
        return -(EIO);
    }
 
  if ((i = maui_read ()) != 0x80)
    {
      if (i != -1)
        printk ("Maui: Error status %02x\n", i);
 
      return -(EIO);
    }
 
  return 0;
}
 
int
probe_maui (struct address_info *hw_config)
{
  int             i;
  int             tmp1, tmp2, ret;
 
  if (check_region (hw_config->io_base, 8))
    return 0;
 
  maui_base = hw_config->io_base;
  maui_osp = hw_config->osp;
 
  if (snd_set_irq_handler (hw_config->irq, mauiintr, "Maui", maui_osp) < 0)
    return 0;
 
  maui_sleep_flag.flags = WK_NONE;
/*
 * Initialize the processor if necessary
 */
 
  if (maui_osLen > 0)
    {
      if (!(inb (HOST_STAT_PORT) & STAT_TX_AVAIL) ||
          !maui_write (0x9F) || /* Report firmware version */
          !maui_short_wait (STAT_RX_AVAIL) ||
          maui_read () == -1 || maui_read () == -1)
        if (!maui_init (hw_config->irq))
          {
            snd_release_irq (hw_config->irq);
            return 0;
          }
    }
 
  if (!maui_write (0xCF))       /* Report hardware version */
    {
      printk ("No WaveFront firmware detected (card uninitialized?)\n");
      snd_release_irq (hw_config->irq);
      return 0;
    }
 
  if ((tmp1 = maui_read ()) == -1 || (tmp2 = maui_read ()) == -1)
    {
      printk ("No WaveFront firmware detected (card uninitialized?)\n");
      snd_release_irq (hw_config->irq);
      return 0;
    }
 
  if (tmp1 == 0xff || tmp2 == 0xff)
    {
      snd_release_irq (hw_config->irq);
      return 0;
    }
 
  if (trace_init)
    printk ("WaveFront hardware version %d.%d\n", tmp1, tmp2);
 
  if (!maui_write (0x9F))       /* Report firmware version */
    return 0;
  if ((tmp1 = maui_read ()) == -1 || (tmp2 = maui_read ()) == -1)
    return 0;
 
  if (trace_init)
    printk ("WaveFront firmware version %d.%d\n", tmp1, tmp2);
 
  if (!maui_write (0x85))       /* Report free DRAM */
    return 0;
  tmp1 = 0;
  for (i = 0; i < 4; i++)
    {
      tmp1 |= maui_read () << (7 * i);
    }
  if (trace_init)
    printk ("Available DRAM %dk\n", tmp1 / 1024);
 
  for (i = 0; i < 1000; i++)
    if (probe_mpu401 (hw_config))
      break;
 
  ret = probe_mpu401 (hw_config);
 
  if (ret)
    request_region (hw_config->io_base + 2, 6, "Maui");
 
  return ret;
}
 
void
attach_maui (struct address_info *hw_config)
{
  int             this_dev = num_midis;
 
  conf_printf ("Maui", hw_config);
 
  hw_config->irq *= -1;
  hw_config->name = "Maui";
  attach_mpu401 (hw_config);
 
  if (num_midis > this_dev)     /* The MPU401 driver installed itself */
    {
      struct synth_operations *synth;
 
      /*
       * Intercept patch loading calls so that they can be handled
       * by the Maui driver.
       */
 
      synth = midi_devs[this_dev]->converter;
 
      if (synth != NULL)
        {
          orig_load_patch = synth->load_patch;
          synth->load_patch = &maui_load_patch;
        }
      else
        printk ("Maui: Can't install patch loader\n");
    }
}
 
void
unload_maui (struct address_info *hw_config)
{
  int             irq = hw_config->irq;
 
  release_region (hw_config->io_base + 2, 6);
 
  unload_mpu401 (hw_config);
 
  if (irq < 0)
    irq = -irq;
 
  if (irq > 0)
    snd_release_irq (irq);
}
 
 
#endif

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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [drivers/] [sound/] [maui.c] - Blame information for rev 1765

Line No.	Rev	Author	Line
1	1626	jcastillo	`/*`
2			`* sound/maui.c`
3			`*`
4			`* The low level driver for Turtle Beach Maui and Tropez.`
5			`*/`
6			`/*`
7			`* Copyright (C) by Hannu Savolainen 1993-1996`
8			`*`
9			`* USS/Lite for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)`
10			`* Version 2 (June 1991). See the "COPYING" file distributed with this software`
11			`* for more info.`
12			`*/`
13			`#include <linux/config.h>`
14
15
16			`#define USE_SEQ_MACROS`
17			`#define USE_SIMPLE_MACROS`
18
19			`#include "sound_config.h"`
20
21			`#if defined(CONFIG_MAUI)`
22
23			`static int maui_base = 0x330;`
24
25			`static volatile int irq_ok = 0;`
26			`static int *maui_osp;`
27
28			`#define HOST_DATA_PORT (maui_base + 2)`
29			`#define HOST_STAT_PORT (maui_base + 3)`
30			`#define HOST_CTRL_PORT (maui_base + 3)`
31
32			`#define STAT_TX_INTR 0x40`
33			`#define STAT_TX_AVAIL 0x20`
34			`#define STAT_TX_IENA 0x10`
35			`#define STAT_RX_INTR 0x04`
36			`#define STAT_RX_AVAIL 0x02`
37			`#define STAT_RX_IENA 0x01`
38
39			`static int (orig_load_patch) (int dev, int format, const char addr,`
40			`int offs, int count, int pmgr_flag) = NULL;`
41
42			`#ifdef HAVE_MAUI_BOOT`
43			`#include "maui_boot.h"`
44			`#else`
45			`static unsigned char *maui_os = NULL;`
46			`static int maui_osLen = 0;`
47
48			`#endif`
49
50			`static wait_handle *maui_sleeper = NULL;`
51			`static volatile struct snd_wait maui_sleep_flag =`
52			`{0};`
53
54			`static int`
55			`maui_wait (int mask)`
56			`{`
57			`int i;`
58
59			`/*`
60			`* Perform a short initial wait without sleeping`
61			`*/`
62
63			`for (i = 0; i < 100; i++)`
64			`{`
65			`if (inb (HOST_STAT_PORT) & mask)`
66			`{`
67			`return 1;`
68			`}`
69			`}`
70
71			`/*`
72			`* Wait up to 15 seconds with sleeping`
73			`*/`
74
75			`for (i = 0; i < 150; i++)`
76			`{`
77			`if (inb (HOST_STAT_PORT) & mask)`
78			`{`
79			`return 1;`
80			`}`
81
82
83			`{`
84			`unsigned long tlimit;`
85
86			`if (HZ / 10)`
87			`current_set_timeout (tlimit = jiffies + (HZ / 10));`
88			`else`
89			`tlimit = (unsigned long) -1;`
90			`maui_sleep_flag.flags = WK_SLEEP;`
91			`module_interruptible_sleep_on (&maui_sleeper);`
92			`if (!(maui_sleep_flag.flags & WK_WAKEUP))`
93			`{`
94			`if (jiffies >= tlimit)`
95			`maui_sleep_flag.flags \|= WK_TIMEOUT;`
96			`}`
97			`maui_sleep_flag.flags &= ~WK_SLEEP;`
98			`};`
99			`if (current_got_fatal_signal ())`
100			`return 0;`
101			`}`
102
103			`return 0;`
104			`}`
105
106			`static int`
107			`maui_read (void)`
108			`{`
109			`if (maui_wait (STAT_RX_AVAIL))`
110			`return inb (HOST_DATA_PORT);`
111
112			`return -1;`
113			`}`
114
115			`static int`
116			`maui_write (unsigned char data)`
117			`{`
118			`if (maui_wait (STAT_TX_AVAIL))`
119			`{`
120			`outb (data, HOST_DATA_PORT);`
121			`return 1;`
122			`}`
123			`printk ("Maui: Write timeout\n");`
124
125			`return 0;`
126			`}`
127
128			`void`
129			`mauiintr (int irq, void dev_id, struct pt_regs dummy)`
130			`{`
131			`irq_ok = 1;`
132			`}`
133
134			`static int`
135			`download_code (void)`
136			`{`
137			`int i, lines = 0;`
138			`int eol_seen = 0, done = 0;`
139			`int skip = 1;`
140
141			`printk ("Code download (%d bytes): ", maui_osLen);`
142
143			`for (i = 0; i < maui_osLen; i++)`
144			`{`
145			`if (maui_os[i] != '\r')`
146			`if (!skip \|\| (maui_os[i] == 'S' && (i == 0 \|\| maui_os[i - 1] == '\n')))`
147			`{`
148			`skip = 0;`
149
150			`if (maui_os[i] == '\n')`
151			`eol_seen = skip = 1;`
152			`else if (maui_os[i] == 'S')`
153			`{`
154			`if (maui_os[i + 1] == '8')`
155			`done = 1;`
156			`if (!maui_write (0xF1))`
157			`goto failure;`
158			`if (!maui_write ('S'))`
159			`goto failure;`
160			`}`
161			`else`
162			`{`
163			`if (!maui_write (maui_os[i]))`
164			`goto failure;`
165			`}`
166
167			`if (eol_seen)`
168			`{`
169			`int c = 0;`
170
171			`int n;`
172
173			`eol_seen = 0;`
174
175			`for (n = 0; n < 2; n++)`
176			`if (maui_wait (STAT_RX_AVAIL))`
177			`{`
178			`c = inb (HOST_DATA_PORT);`
179			`break;`
180			`}`
181
182			`if (c != 0x80)`
183			`{`
184			`printk ("Download not acknowledged\n");`
185			`return 0;`
186			`}`
187			`else if (!(lines++ % 10))`
188			`printk (".");`
189
190			`if (done)`
191			`{`
192			`printk ("\nDownload complete\n");`
193			`return 1;`
194			`}`
195			`}`
196			`}`
197			`}`
198
199			`failure:`
200
201			`printk ("\nDownload failed!!!\n");`
202			`return 0;`
203			`}`
204
205			`static int`
206			`maui_init (int irq)`
207			`{`
208			`int i;`
209			`unsigned char bits;`
210
211			`switch (irq)`
212			`{`
213			`case 9:`
214			`bits = 0x00;`
215			`break;`
216			`case 5:`
217			`bits = 0x08;`
218			`break;`
219			`case 12:`
220			`bits = 0x10;`
221			`break;`
222			`case 15:`
223			`bits = 0x18;`
224			`break;`
225
226			`default:`
227			`printk ("Maui: Invalid IRQ %d\n", irq);`
228			`return 0;`
229			`}`
230
231			`outb (0x00, HOST_CTRL_PORT); /* Reset */`
232
233			`outb (bits, HOST_DATA_PORT); /* Set the IRQ bits */`
234			`outb (bits \| 0x80, HOST_DATA_PORT); /* Set the IRQ bits again? */`
235
236			`outb (0x80, HOST_CTRL_PORT); /* Leave reset */`
237			`outb (0x80, HOST_CTRL_PORT); /* Leave reset */`
238
239			`outb (0xD0, HOST_CTRL_PORT); /* Cause interrupt */`
240
241			`for (i = 0; i < 1000000 && !irq_ok; i++);`
242
243			`if (!irq_ok)`
244			`return 0;`
245
246			`outb (0x80, HOST_CTRL_PORT); /* Leave reset */`
247
248			`printk ("Turtle Beach Maui initialization\n");`
249
250			`if (!download_code ())`
251			`return 0;`
252
253			`outb (0xE0, HOST_CTRL_PORT); /* Normal operation */`
254
255			`/* Select mpu401 mode */`
256
257			`maui_write (0xf0);`
258			`maui_write (1);`
259			`if (maui_read () != 0x80)`
260			`{`
261			`maui_write (0xf0);`
262			`maui_write (1);`
263			`if (maui_read () != 0x80)`
264			`printk ("Maui didn't acknowledge set HW mode command\n");`
265			`}`
266
267			`printk ("Maui initialized OK\n");`
268			`return 1;`
269			`}`
270
271			`static int`
272			`maui_short_wait (int mask)`
273			`{`
274			`int i;`
275
276			`for (i = 0; i < 1000; i++)`
277			`{`
278			`if (inb (HOST_STAT_PORT) & mask)`
279			`{`
280			`return 1;`
281			`}`
282			`}`
283
284			`return 0;`
285			`}`
286
287			`int`
288			`maui_load_patch (int dev, int format, const char *addr,`
289			`int offs, int count, int pmgr_flag)`
290			`{`
291
292			`struct sysex_info header;`
293			`unsigned long left, src_offs;`
294			`int hdr_size = (unsigned long) &header.data[0] - (unsigned long) &header;`
295			`int i;`
296
297			`if (format == SYSEX_PATCH) /* Handled by midi_synth.c */`
298			`return orig_load_patch (dev, format, addr, offs, count, pmgr_flag);`
299
300			`if (format != MAUI_PATCH)`
301			`{`
302			`printk ("Maui: Unknown patch format\n");`
303			`}`
304
305			`if (count < hdr_size)`
306			`{`
307			`printk ("Maui error: Patch header too short\n");`
308			`return -(EINVAL);`
309			`}`
310
311			`count -= hdr_size;`
312
313			`/*`
314			`* Copy the header from user space but ignore the first bytes which have`
315			`* been transferred already.`
316			`*/`
317
318			`memcpy_fromfs (&((char *) &header)[offs], &(addr)[offs], hdr_size - offs);`
319
320			`if (count < header.len)`
321			`{`
322			`printk ("Maui warning: Host command record too short (%d<%d)\n",`
323			`count, (int) header.len);`
324			`header.len = count;`
325			`}`
326
327			`left = header.len;`
328			`src_offs = 0;`
329
330			`for (i = 0; i < left; i++)`
331			`{`
332			`unsigned char data;`
333
334			`data = get_fs_byte (&((addr)[hdr_size + i]));`
335			`if (i == 0 && !(data & 0x80))`
336			`return -(EINVAL);`
337
338			`if (maui_write (data) == -1)`
339			`return -(EIO);`
340			`}`
341
342			`if ((i = maui_read ()) != 0x80)`
343			`{`
344			`if (i != -1)`
345			`printk ("Maui: Error status %02x\n", i);`
346
347			`return -(EIO);`
348			`}`
349
350			`return 0;`
351			`}`
352
353			`int`
354			`probe_maui (struct address_info *hw_config)`
355			`{`
356			`int i;`
357			`int tmp1, tmp2, ret;`
358
359			`if (check_region (hw_config->io_base, 8))`
360			`return 0;`
361
362			`maui_base = hw_config->io_base;`
363			`maui_osp = hw_config->osp;`
364
365			`if (snd_set_irq_handler (hw_config->irq, mauiintr, "Maui", maui_osp) < 0)`
366			`return 0;`
367
368			`maui_sleep_flag.flags = WK_NONE;`
369			`/*`
370			`* Initialize the processor if necessary`
371			`*/`
372
373			`if (maui_osLen > 0)`
374			`{`
375			`if (!(inb (HOST_STAT_PORT) & STAT_TX_AVAIL) \|\|`
376			`!maui_write (0x9F) \|\| /* Report firmware version */`
377			`!maui_short_wait (STAT_RX_AVAIL) \|\|`
378			`maui_read () == -1 \|\| maui_read () == -1)`
379			`if (!maui_init (hw_config->irq))`
380			`{`
381			`snd_release_irq (hw_config->irq);`
382			`return 0;`
383			`}`
384			`}`
385
386			`if (!maui_write (0xCF)) /* Report hardware version */`
387			`{`
388			`printk ("No WaveFront firmware detected (card uninitialized?)\n");`
389			`snd_release_irq (hw_config->irq);`
390			`return 0;`
391			`}`
392
393			`if ((tmp1 = maui_read ()) == -1 \|\| (tmp2 = maui_read ()) == -1)`
394			`{`
395			`printk ("No WaveFront firmware detected (card uninitialized?)\n");`
396			`snd_release_irq (hw_config->irq);`
397			`return 0;`
398			`}`
399
400			`if (tmp1 == 0xff \|\| tmp2 == 0xff)`
401			`{`
402			`snd_release_irq (hw_config->irq);`
403			`return 0;`
404			`}`
405
406			`if (trace_init)`
407			`printk ("WaveFront hardware version %d.%d\n", tmp1, tmp2);`
408
409			`if (!maui_write (0x9F)) /* Report firmware version */`
410			`return 0;`
411			`if ((tmp1 = maui_read ()) == -1 \|\| (tmp2 = maui_read ()) == -1)`
412			`return 0;`
413
414			`if (trace_init)`
415			`printk ("WaveFront firmware version %d.%d\n", tmp1, tmp2);`
416
417			`if (!maui_write (0x85)) /* Report free DRAM */`
418			`return 0;`
419			`tmp1 = 0;`
420			`for (i = 0; i < 4; i++)`
421			`{`
422			`tmp1 \|= maui_read () << (7 * i);`
423			`}`
424			`if (trace_init)`
425			`printk ("Available DRAM %dk\n", tmp1 / 1024);`
426
427			`for (i = 0; i < 1000; i++)`
428			`if (probe_mpu401 (hw_config))`
429			`break;`
430
431			`ret = probe_mpu401 (hw_config);`
432
433			`if (ret)`
434			`request_region (hw_config->io_base + 2, 6, "Maui");`
435
436			`return ret;`
437			`}`
438
439			`void`
440			`attach_maui (struct address_info *hw_config)`
441			`{`
442			`int this_dev = num_midis;`
443
444			`conf_printf ("Maui", hw_config);`
445
446			`hw_config->irq *= -1;`
447			`hw_config->name = "Maui";`
448			`attach_mpu401 (hw_config);`
449
450			`if (num_midis > this_dev) /* The MPU401 driver installed itself */`
451			`{`
452			`struct synth_operations *synth;`
453
454			`/*`
455			`* Intercept patch loading calls so that they can be handled`
456			`* by the Maui driver.`
457			`*/`
458
459			`synth = midi_devs[this_dev]->converter;`
460
461			`if (synth != NULL)`
462			`{`
463			`orig_load_patch = synth->load_patch;`
464			`synth->load_patch = &maui_load_patch;`
465			`}`
466			`else`
467			`printk ("Maui: Can't install patch loader\n");`
468			`}`
469			`}`
470
471			`void`
472			`unload_maui (struct address_info *hw_config)`
473			`{`
474			`int irq = hw_config->irq;`
475
476			`release_region (hw_config->io_base + 2, 6);`
477
478			`unload_mpu401 (hw_config);`
479
480			`if (irq < 0)`
481			`irq = -irq;`
482
483			`if (irq > 0)`
484			`snd_release_irq (irq);`
485			`}`
486
487
488			`#endif`