--- /dev/null
+/**************************************************************************
+ *
+ * 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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