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/**************************************************************************
*
* BRIEF MODULE DESCRIPTION
* DMA register definition
*
* Copyright 2004 IDT Inc. (rischelp@idt.com)
*
* This program 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 of the License, or (at your
* option) any later version.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
**************************************************************************
* May 2004 rkt, neb
*
* Initial Release
*
*
*
**************************************************************************
*/
#ifndef __IDT_DMA_H__
#define __IDT_DMA_H__
enum
{
DMA0_PhysicalAddress = 0x18040000,
DMA_PhysicalAddress = DMA0_PhysicalAddress, // Default
DMA0_VirtualAddress = 0xb8040000,
DMA_VirtualAddress = DMA0_VirtualAddress, // Default
} ;
/*
* DMA descriptor (in physical memory).
*/
typedef struct DMAD_s
{
u32 control ; // Control. use DMAD_*
u32 ca ; // Current Address.
u32 devcs ; // Device control and status.
u32 link ; // Next descriptor in chain.
} volatile *DMAD_t ;
enum
{
DMAD_size = sizeof (struct DMAD_s),
DMAD_count_b = 0, // in DMAD_t -> control
DMAD_count_m = 0x0003ffff, // in DMAD_t -> control
DMAD_ds_b = 20, // in DMAD_t -> control
DMAD_ds_m = 0x00300000, // in DMAD_t -> control
DMAD_ds_ethRcv0_v = 0,
DMAD_ds_ethXmt0_v = 0,
DMAD_ds_memToFifo_v = 0,
DMAD_ds_fifoToMem_v = 0,
DMAD_ds_pciToMem_v = 0,
DMAD_ds_memToPci_v = 0,
DMAD_devcmd_b = 22, // in DMAD_t -> control
DMAD_devcmd_m = 0x01c00000, // in DMAD_t -> control
DMAD_devcmd_byte_v = 0, //memory-to-memory
DMAD_devcmd_halfword_v = 1, //memory-to-memory
DMAD_devcmd_word_v = 2, //memory-to-memory
DMAD_devcmd_2words_v = 3, //memory-to-memory
DMAD_devcmd_4words_v = 4, //memory-to-memory
DMAD_devcmd_6words_v = 5, //memory-to-memory
DMAD_devcmd_8words_v = 6, //memory-to-memory
DMAD_devcmd_16words_v = 7, //memory-to-memory
DMAD_cof_b = 25, // chain on finished
DMAD_cof_m = 0x02000000, //
DMAD_cod_b = 26, // chain on done
DMAD_cod_m = 0x04000000, //
DMAD_iof_b = 27, // interrupt on finished
DMAD_iof_m = 0x08000000, //
DMAD_iod_b = 28, // interrupt on done
DMAD_iod_m = 0x10000000, //
DMAD_t_b = 29, // terminated
DMAD_t_m = 0x20000000, //
DMAD_d_b = 30, // done
DMAD_d_m = 0x40000000, //
DMAD_f_b = 31, // finished
DMAD_f_m = 0x80000000, //
} ;
/*
* DMA register (within Internal Register Map).
*/
struct DMA_Chan_s
{
u32 dmac ; // Control.
u32 dmas ; // Status.
u32 dmasm ; // Mask.
u32 dmadptr ; // Descriptor pointer.
u32 dmandptr ; // Next descriptor pointer.
};
typedef struct DMA_Chan_s volatile *DMA_Chan_t ;
//DMA_Channels use DMACH_count instead
enum
{
DMAC_run_b = 0, //
DMAC_run_m = 0x00000001, //
DMAC_dm_b = 1, // done mask
DMAC_dm_m = 0x00000002, //
DMAC_mode_b = 2, //
DMAC_mode_m = 0x0000000c, //
DMAC_mode_auto_v = 0,
DMAC_mode_burst_v = 1,
DMAC_mode_transfer_v = 2, //usually used
DMAC_mode_reserved_v = 3,
DMAC_a_b = 4, //
DMAC_a_m = 0x00000010, //
DMAS_f_b = 0, // finished (sticky)
DMAS_f_m = 0x00000001, //
DMAS_d_b = 1, // done (sticky)
DMAS_d_m = 0x00000002, //
DMAS_c_b = 2, // chain (sticky)
DMAS_c_m = 0x00000004, //
DMAS_e_b = 3, // error (sticky)
DMAS_e_m = 0x00000008, //
DMAS_h_b = 4, // halt (sticky)
DMAS_h_m = 0x00000010, //
DMASM_f_b = 0, // finished (1=mask)
DMASM_f_m = 0x00000001, //
DMASM_d_b = 1, // done (1=mask)
DMASM_d_m = 0x00000002, //
DMASM_c_b = 2, // chain (1=mask)
DMASM_c_m = 0x00000004, //
DMASM_e_b = 3, // error (1=mask)
DMASM_e_m = 0x00000008, //
DMASM_h_b = 4, // halt (1=mask)
DMASM_h_m = 0x00000010, //
} ;
/*
* DMA channel definitions
*/
enum
{
DMACH_ethRcv0 = 0,
DMACH_ethXmt0 = 1,
DMACH_memToFifo = 2,
DMACH_fifoToMem = 3,
DMACH_pciToMem = 4,
DMACH_memToPci = 5,
DMACH_count //must be last
};
typedef struct DMAC_s
{
struct DMA_Chan_s ch [DMACH_count] ; //use ch[DMACH_]
} volatile *DMA_t ;
/*
* External DMA parameters
*/
enum
{
DMADEVCMD_ts_b = 0, // ts field in devcmd
DMADEVCMD_ts_m = 0x00000007, // ts field in devcmd
DMADEVCMD_ts_byte_v = 0,
DMADEVCMD_ts_halfword_v = 1,
DMADEVCMD_ts_word_v = 2,
DMADEVCMD_ts_2word_v = 3,
DMADEVCMD_ts_4word_v = 4,
DMADEVCMD_ts_6word_v = 5,
DMADEVCMD_ts_8word_v = 6,
DMADEVCMD_ts_16word_v = 7
};
#endif // __IDT_DMA_H__
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