mirrors/Bochs
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

- update irq level after IMR write

Browse Source 
- attempt to set IMR bit 7 no longer causes a panic
- fixed multicast/broadcast packet detection
- small code cleanup
This commit is contained in:
Volker Ruppert 2005-05-26 09:24:28 +00:00
parent 5661dc8dfe
commit 8bd2d27e29
1 changed files with 29 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
bochs/iodev/ne2k.cc
View File

@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: ne2k.cc,v 1.72 2005-01-01 09:31:38 vruppert Exp $
// $Id: ne2k.cc,v 1.73 2005-05-26 09:24:28 vruppert Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2002 MandrakeSoft S.A.
@ -328,11 +328,10 @@ bx_ne2k_c::asic_read(Bit32u offset, unsigned int io_len)
// and the source-address and length registers must
// have been initialised.
//
if (io_len > BX_NE2K_THIS s.remote_bytes)
{
BX_ERROR(("ne2K: dma read underrun iolen=%d remote_bytes=%d",io_len,BX_NE2K_THIS s.remote_bytes));
//return 0;
}
if (io_len > BX_NE2K_THIS s.remote_bytes) {
BX_ERROR(("ne2K: dma read underrun iolen=%d remote_bytes=%d",io_len,BX_NE2K_THIS s.remote_bytes));
//return 0;
}
//BX_INFO(("ne2k read DMA: addr=%4x remote_bytes=%d",BX_NE2K_THIS s.remote_dma,BX_NE2K_THIS s.remote_bytes));
retval = chipmem_read(BX_NE2K_THIS s.remote_dma, io_len);
@ -359,13 +358,13 @@ bx_ne2k_c::asic_read(Bit32u offset, unsigned int io_len)
else
BX_NE2K_THIS s.remote_bytes = 0;
// If all bytes have been written, signal remote-DMA complete
if (BX_NE2K_THIS s.remote_bytes == 0) {
BX_NE2K_THIS s.ISR.rdma_done = 1;
if (BX_NE2K_THIS s.IMR.rdma_inte) {
set_irq_level(1);
}
}
// If all bytes have been written, signal remote-DMA complete
if (BX_NE2K_THIS s.remote_bytes == 0) {
BX_NE2K_THIS s.ISR.rdma_done = 1;
if (BX_NE2K_THIS s.IMR.rdma_inte) {
set_irq_level(1);
}
}
break;
case 0xf: // Reset register
@ -543,6 +542,8 @@ bx_ne2k_c::page0_read(Bit32u offset, unsigned int io_len)
void
bx_ne2k_c::page0_write(Bit32u offset, Bit32u value, unsigned io_len)
{
Bit8u value2;
BX_DEBUG(("page 0 write to port %04x, len=%u", (unsigned) offset,
(unsigned) io_len));
@ -563,7 +564,6 @@ bx_ne2k_c::page0_write(Bit32u offset, Bit32u value, unsigned io_len)
break;
case 0x2: // PSTOP
// BX_INFO(("Writing to PSTOP: %02x", value));
BX_NE2K_THIS s.page_stop = value;
break;
@ -708,7 +708,7 @@ bx_ne2k_c::page0_write(Bit32u offset, Bit32u value, unsigned io_len)
case 0xf: // IMR
// Check for reserved bit
if (value & 0x80)
BX_PANIC(("IMR write, reserved bit set"));
BX_ERROR(("IMR write, reserved bit set"));
// Set other values
BX_NE2K_THIS s.IMR.rx_inte = ((value & 0x01) == 0x01);
@ -718,6 +718,18 @@ bx_ne2k_c::page0_write(Bit32u offset, Bit32u value, unsigned io_len)
BX_NE2K_THIS s.IMR.overw_inte = ((value & 0x10) == 0x10);
BX_NE2K_THIS s.IMR.cofl_inte = ((value & 0x20) == 0x20);
BX_NE2K_THIS s.IMR.rdma_inte = ((value & 0x40) == 0x40);
value2 = ((BX_NE2K_THIS s.ISR.rdma_done << 6) |
(BX_NE2K_THIS s.ISR.cnt_oflow << 5) |
(BX_NE2K_THIS s.ISR.overwrite << 4) |
(BX_NE2K_THIS s.ISR.tx_err << 3) |
(BX_NE2K_THIS s.ISR.rx_err << 2) |
(BX_NE2K_THIS s.ISR.pkt_tx << 1) |
(BX_NE2K_THIS s.ISR.pkt_rx));
if (((value & value2) & 0x7f) == 0) {
set_irq_level(0);
} else {
set_irq_level(1);
}
break;
default:
@ -1276,9 +1288,7 @@ bx_ne2k_c::rx_frame(const void *buf, unsigned io_len)
}
BX_NE2K_THIS s.RSR.rx_ok = 1;
if (pktbuf[0] & 0x80) {
BX_NE2K_THIS s.RSR.rx_mbit = 1;
}
BX_NE2K_THIS s.RSR.rx_mbit = (bx_bool)((pktbuf[0] & 0x01) > 0);
BX_NE2K_THIS s.ISR.pkt_rx = 1;
@ -1293,7 +1303,7 @@ bx_ne2k_c::init(void)
{
char devname[16];
BX_DEBUG(("Init $Id: ne2k.cc,v 1.72 2005-01-01 09:31:38 vruppert Exp $"));
BX_DEBUG(("Init $Id: ne2k.cc,v 1.73 2005-05-26 09:24:28 vruppert Exp $"));
// Read in values from config file
memcpy(BX_NE2K_THIS s.physaddr, bx_options.ne2k.Omacaddr->getptr (), 6);