1 //==========================================================================
3 // devs/eth/sh/dreamcast/src/devs_eth_sh_dreamcast_rltk8139.c
5 // Dreamcast Broadband Adapter initialize functions.
7 //==========================================================================
8 //####ECOSGPLCOPYRIGHTBEGIN####
9 // -------------------------------------------
10 // This file is part of eCos, the Embedded Configurable Operating System.
11 // Copyright (C) 2004 Red Hat, Inc.
13 // eCos is free software; you can redistribute it and/or modify it under
14 // the terms of the GNU General Public License as published by the Free
15 // Software Foundation; either version 2 or (at your option) any later version.
17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
22 // You should have received a copy of the GNU General Public License along
23 // with eCos; if not, write to the Free Software Foundation, Inc.,
24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
26 // As a special exception, if other files instantiate templates or use macros
27 // or inline functions from this file, or you compile this file and link it
28 // with other works to produce a work based on this file, this file does not
29 // by itself cause the resulting work to be covered by the GNU General Public
30 // License. However the source code for this file must still be made available
31 // in accordance with section (3) of the GNU General Public License.
33 // This exception does not invalidate any other reasons why a work based on
34 // this file might be covered by the GNU General Public License.
35 // -------------------------------------------
36 //####ECOSGPLCOPYRIGHTEND####
37 //==========================================================================
38 //#####DESCRIPTIONBEGIN####
40 // Author(s): Yoshiori Sato
43 // Purpose: dreamcast BbA initialize functions
44 //####DESCRIPTIONEND####
45 //==========================================================================
47 #include <cyg/infra/cyg_type.h>
48 #include <cyg/hal/hal_arch.h>
49 #include <cyg/hal/drv_api.h>
50 #include <cyg/io/eth/eth_drv.h>
51 #include <cyg/io/pci.h>
52 #include <cyg/infra/diag.h>
54 #include <cyg/devs/eth/src/if_8139.h>
56 /* DMA BASE address */
57 #define GAPSPCI_DMA_BASE 0x01840000
58 #define GAPSPCI_DMA_SIZE 32768
59 #define BBA_BASE 0x01001700
61 #define P2BASE 0xa0000000
63 static cyg_uint32 gapspci_dma_alloc(int size)
65 static cyg_uint32 top = GAPSPCI_DMA_BASE;
67 if ((GAPSPCI_DMA_SIZE - (top - GAPSPCI_DMA_BASE)) < size)
76 void __dreamcast_bba_init(struct eth_drv_sc *sc)
78 Rltk8139_t *rltk8139_info = (Rltk8139_t *)(sc->driver_private);
81 rltk8139_info->base_address = (BBA_BASE | P2BASE);
83 rltk8139_info->tx_buffer = (cyg_uint8 *)(gapspci_dma_alloc(TX_BUF_TOT_LEN) | P2BASE);
84 rltk8139_info->rx_ring = (cyg_uint8 *)(gapspci_dma_alloc(RX_BUF_TOT_LEN) | P2BASE);
86 for (i = 0; i < 6; ++i)
87 HAL_READ_UINT8(rltk8139_info->base_address + IDR0 + i, rltk8139_info->mac[i]);