diff options
Diffstat (limited to 'ecos/packages/devs/eth/sh/dreamcast/current/src/if_dreamcast.c')
| -rw-r--r-- | ecos/packages/devs/eth/sh/dreamcast/current/src/if_dreamcast.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/ecos/packages/devs/eth/sh/dreamcast/current/src/if_dreamcast.c b/ecos/packages/devs/eth/sh/dreamcast/current/src/if_dreamcast.c new file mode 100644 index 0000000..5ba7218 --- /dev/null +++ b/ecos/packages/devs/eth/sh/dreamcast/current/src/if_dreamcast.c @@ -0,0 +1,92 @@ +//========================================================================== +// +// devs/eth/sh/dreamcast/src/devs_eth_sh_dreamcast_rltk8139.c +// +// Dreamcast Broadband Adapter initialize functions. +// +//========================================================================== +// ####ECOSGPLCOPYRIGHTBEGIN#### +// ------------------------------------------- +// This file is part of eCos, the Embedded Configurable Operating System. +// Copyright (C) 2004 Free Software Foundation, Inc. +// +// eCos is free software; you can redistribute it and/or modify it under +// the terms of the GNU General Public License as published by the Free +// Software Foundation; either version 2 or (at your option) any later +// version. +// +// eCos is distributed in the hope that it will be useful, but WITHOUT +// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +// for more details. +// +// You should have received a copy of the GNU General Public License +// along with eCos; if not, write to the Free Software Foundation, Inc., +// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. +// +// As a special exception, if other files instantiate templates or use +// macros or inline functions from this file, or you compile this file +// and link it with other works to produce a work based on this file, +// this file does not by itself cause the resulting work to be covered by +// the GNU General Public License. However the source code for this file +// must still be made available in accordance with section (3) of the GNU +// General Public License v2. +// +// This exception does not invalidate any other reasons why a work based +// on this file might be covered by the GNU General Public License. +// ------------------------------------------- +// ####ECOSGPLCOPYRIGHTEND#### +//========================================================================== +//#####DESCRIPTIONBEGIN#### +// +// Author(s): Yoshiori Sato +// Contributors: +// Date: 2004-04-21 +// Purpose: dreamcast BbA initialize functions +//####DESCRIPTIONEND#### +//========================================================================== + +#include <cyg/infra/cyg_type.h> +#include <cyg/hal/hal_arch.h> +#include <cyg/hal/drv_api.h> +#include <cyg/io/eth/eth_drv.h> +#include <cyg/io/pci.h> +#include <cyg/infra/diag.h> + +#include <cyg/devs/eth/src/if_8139.h> + +/* DMA BASE address */ +#define GAPSPCI_DMA_BASE 0x01840000 +#define GAPSPCI_DMA_SIZE 32768 +#define BBA_BASE 0x01001700 + +#define P2BASE 0xa0000000 + +static cyg_uint32 gapspci_dma_alloc(int size) +{ + static cyg_uint32 top = GAPSPCI_DMA_BASE; + cyg_uint32 r; + if ((GAPSPCI_DMA_SIZE - (top - GAPSPCI_DMA_BASE)) < size) + r = 0; + else { + r = top; + top += size; + } + return r; +} + +void __dreamcast_bba_init(struct eth_drv_sc *sc) +{ + Rltk8139_t *rltk8139_info = (Rltk8139_t *)(sc->driver_private); + int i; + + rltk8139_info->base_address = (BBA_BASE | P2BASE); + + rltk8139_info->tx_buffer = (cyg_uint8 *)(gapspci_dma_alloc(TX_BUF_TOT_LEN) | P2BASE); + rltk8139_info->rx_ring = (cyg_uint8 *)(gapspci_dma_alloc(RX_BUF_TOT_LEN) | P2BASE); + + for (i = 0; i < 6; ++i) + HAL_READ_UINT8(rltk8139_info->base_address + IDR0 + i, rltk8139_info->mac[i]); +} + +// EOF if_dreamcast.c |