BTW, found the problem with that piece of code about 2 seconds after
sending it....
The fcc_rbase &tbase parameters are not given the physical address, but
the virtual one...
Change
ep->fen_genfcc.fcc_rbase = (uint)&immap->im_dprambase[i];
To
ep->fen_genfcc.fcc_rbase = __pa((uint)&immap->im_dprambase[i]);
And
ep->fen_genfcc.fcc_tbase = (uint)&immap->im_dprambase[i];
To
ep->fen_genfcc.fcc_tbase = __pa((uint)&immap->im_dprambase[i]);
And everything works great...
Probably even increased performance a bit...
Proper patch:
--- ../fcc_enet.c 2004-06-09 22:33:14.000000000 -0500
+++ arch/ppc/8260_io/fcc_enet.c 2004-06-09 22:26:47.000000000 -0500
@@ -1564,17 +1564,17 @@ init_fcc_param(fcc_info_t *fip, struct n
* These are relative offsets in the DP ram address space.
* Initialize base addresses for the buffer descriptors.
*/
-#if 0
+#if 1
/* I really want to do this, but for some reason it doesn't
* work with the data cache enabled, so I allocate from the
* main memory instead.
*/
i = m8260_cpm_dpalloc(sizeof(cbd_t) * RX_RING_SIZE, 8);
- ep->fen_genfcc.fcc_rbase = (uint)&immap->im_dprambase[i];
+ ep->fen_genfcc.fcc_rbase = __pa((uint)&immap->im_dprambase[i]);
cep->rx_bd_base = (cbd_t *)&immap->im_dprambase[i];
i = m8260_cpm_dpalloc(sizeof(cbd_t) * TX_RING_SIZE, 8);
- ep->fen_genfcc.fcc_tbase = (uint)&immap->im_dprambase[i];
+ ep->fen_genfcc.fcc_tbase = __pa((uint)&immap->im_dprambase[i]);
cep->tx_bd_base = (cbd_t *)&immap->im_dprambase[i];
#else
cep->rx_bd_base = (cbd_t *)m8260_cpm_hostalloc(sizeof(cbd_t) *
RX_RING_SIZE, 8);
---
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
