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Copied midi buffering to iap buffering.

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This commit is contained in:
Russell Gallop
2011-07-29 12:19:18 +01:00
parent 3a611fe375
commit 17babda9e5
4 changed files with 260 additions and 7 deletions
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81
module_usb_aud_shared/usb_buffer/usb_buffer.xc
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@@ -11,6 +11,7 @@
#include "usb.h"
#include "devicedefines.h"
#include "usb_midi.h"
#include "iAP.h"
#include "xc_ptr.h"
#include "clockcmds.h"
#include "xud.h"
@@ -45,7 +46,7 @@ unsigned g_freqChange = 0;
/* Interrupt EP data */
unsigned char g_intData[8];
#ifdef MIDI
#if defined (MIDI) || defined(IAP)
static inline void swap(xc_ptr &a, xc_ptr &b)
{
xc_ptr tmp;
@@ -73,6 +74,9 @@ extern unsigned g_numUsbChanIn;
void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud_fb,
chanend c_midi_from_host,
chanend c_midi_to_host,
chanend c_iap_from_host,
chanend c_iap_to_host,
chanend c_iap_to_host_int,
chanend ?c_int, chanend c_sof,
chanend c_aud_ctl,
in port p_off_mclk
@@ -85,6 +89,11 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
XUD_ep ep_midi_from_host = XUD_Init_Ep(c_midi_from_host);
XUD_ep ep_midi_to_host = XUD_Init_Ep(c_midi_to_host);
#endif
#ifdef IAP
XUD_ep ep_iap_from_host = XUD_Init_Ep(c_iap_from_host);
XUD_ep ep_iap_to_host = XUD_Init_Ep(c_iap_to_host);
XUD_ep ep_iap_to_host_int = XUD_Init_Ep(c_iap_to_host_int);
#endif
#if defined(SPDIF_RX) || defined(ADAT_RX)
XUD_ep ep_int = XUD_Init_Ep(c_int);
#endif
@@ -114,7 +123,12 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
xc_ptr midi_to_host_buffer = 0;
xc_ptr midi_to_host_waiting_buffer = 0;
#endif
#ifdef IAP
xc_ptr iap_from_host_buffer = 0;
xc_ptr iap_to_host_buffer = 0;
xc_ptr iap_to_host_waiting_buffer = 0;
#endif
set_thread_fast_mode_on();
@@ -163,6 +177,22 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
SET_SHARED_GLOBAL(g_midi_from_host_flag, 1);
#endif
#ifdef IAP
// get the two buffers to use for iap device->host
asm("ldaw %0, dp[g_iap_to_host_buffer_A]":"=r"(iap_to_host_buffer));
asm("ldaw %0, dp[g_iap_to_host_buffer_B]":"=r"(iap_to_host_waiting_buffer));
asm("ldaw %0, dp[g_iap_from_host_buffer]":"=r"(iap_from_host_buffer));
// pass the iap->XUD chanends to decouple so that thread can
// initialize comm with XUD
asm("stw %0, dp[iap_to_host_usb_ep]"::"r"(ep_iap_to_host));
asm("stw %0, dp[iap_to_host_int_usb_ep]"::"r"(ep_iap_to_host_int));
asm("stw %0, dp[iap_from_host_usb_ep]"::"r"(ep_iap_from_host));
swap(iap_to_host_buffer, iap_to_host_waiting_buffer);
SET_SHARED_GLOBAL(g_iap_from_host_flag, 1);
#endif
#ifdef OUTPUT
SET_SHARED_GLOBAL(g_aud_from_host_flag, 1);
#endif
@@ -505,7 +535,52 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in, chanend c_aud
break;
#endif
}
#ifdef IAP
case inuint_byref(c_iap_from_host, tmp):
asm("#iap h->d");
/* Get buffer data from host - IAP OUT from host always into a single buffer */
{
xc_ptr p = iap_from_host_buffer + 4;
xc_ptr p0 = p;
xc_ptr p1 = p + MAX_IAP_PACKET_SIZE;
while (!testct(c_iap_from_host))
{
unsigned int datum = inuint(c_iap_from_host);
write_via_xc_ptr(p, datum);
p += 4;
}
(void) inct(c_iap_from_host);
datalength = p - p0 - 4;
}
XUD_SetNotReady(ep_iap_from_host);
write_via_xc_ptr(iap_from_host_buffer, datalength);
/* release the buffer */
SET_SHARED_GLOBAL(g_iap_from_host_flag, 1);
break;
/* IAP IN to host */
case inuint_byref(c_iap_to_host, tmp):
asm("#iap d->h");
// fill in the data
XUD_SetData_Inline(ep_iap_to_host, c_iap_to_host);
XUD_SetNotReady(ep_iap_to_host);
// ack the decouple thread to say it has been sent to host
SET_SHARED_GLOBAL(g_iap_to_host_flag, 1);
swap(iap_to_host_buffer, iap_to_host_waiting_buffer);
break;
#endif
}
}