/*
* Upload the microcode into the SoundScape. The
* microcode is 64K of data, and if we try to copy
* it into a local variable then we will SMASH THE
* KERNEL'S STACK! We therefore leave it in USER
* SPACE, and save ourselves from copying it at all.
*/
static int sscape_upload_microcode(struct soundscape *sscape,
const struct sscape_microcode __user *mc)
{
unsigned long flags;
char __user *code;
int err;
/*
* We are going to have to copy this data into a special
* DMA-able buffer before we can upload it. We shall therefore
* just check that the data pointer is valid for now.
*
* NOTE: This buffer is 64K long! That's WAY too big to
* copy into a stack-temporary anyway.
*/
if ( get_user(code, &mc->code) ||
!access_ok(VERIFY_READ, code, SSCAPE_MICROCODE_SIZE) )
return -EFAULT;
if ((err = upload_dma_data(sscape, code, SSCAPE_MICROCODE_SIZE)) == 0) {
snd_printk(KERN_INFO "sscape: MIDI firmware loaded\n");
}
spin_lock_irqsave(&sscape->lock, flags);
set_midi_mode_unsafe(sscape->io_base);
spin_unlock_irqrestore(&sscape->lock, flags);
initialise_mpu401(sscape->mpu);
return err;
}
/*
* Initialse an MPU-401 subdevice for MIDI support on the SoundScape.
*/
static int __devinit create_mpu401(snd_card_t * card, int devnum, unsigned long port, int irq)
{
struct soundscape *sscape = get_card_soundscape(card);
snd_rawmidi_t *rawmidi;
int err;
#define MPU401_SHARE_HARDWARE 1
if ((err = snd_mpu401_uart_new(card, devnum,
MPU401_HW_MPU401,
port, MPU401_SHARE_HARDWARE,
irq, SA_INTERRUPT,
&rawmidi)) == 0) {
mpu401_t *mpu = (mpu401_t *) rawmidi->private_data;
mpu->open_input = mpu401_open;
mpu->open_output = mpu401_open;
mpu->close_input = mpu401_close;
mpu->close_output = mpu401_close;
mpu->private_data = sscape;
sscape->mpu = mpu;
initialise_mpu401(mpu);
}
return err;
}
/*
* Initialse an MPU-401 subdevice for MIDI support on the SoundScape.
*/
static int __devinit create_mpu401(struct snd_card *card, int devnum, unsigned long port, int irq)
{
struct soundscape *sscape = get_card_soundscape(card);
struct snd_rawmidi *rawmidi;
int err;
if ((err = snd_mpu401_uart_new(card, devnum,
MPU401_HW_MPU401,
port, MPU401_INFO_INTEGRATED,
irq, IRQF_DISABLED,
&rawmidi)) == 0) {
struct snd_mpu401 *mpu = (struct snd_mpu401 *) rawmidi->private_data;
mpu->open_input = mpu401_open;
mpu->open_output = mpu401_open;
mpu->close_input = mpu401_close;
mpu->close_output = mpu401_close;
mpu->private_data = sscape;
sscape->mpu = mpu;
initialise_mpu401(mpu);
}
return err;
}
