Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
tiomap_io.h
Go to the documentation of this file.
1 /*
2  * tiomap_io.h
3  *
4  * DSP-BIOS Bridge driver support functions for TI OMAP processors.
5  *
6  * Definitions, types and function prototypes for the io (r/w external mem).
7  *
8  * Copyright (C) 2005-2006 Texas Instruments, Inc.
9  *
10  * This package is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License version 2 as
12  * published by the Free Software Foundation.
13  *
14  * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
15  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
16  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
17  */
18 
19 #ifndef _TIOMAP_IO_
20 #define _TIOMAP_IO_
21 
22 /*
23  * Symbol that defines beginning of shared memory.
24  * For OMAP (Helen) this is the DSP Virtual base address of SDRAM.
25  * This will be used to program DSP MMU to map DSP Virt to GPP phys.
26  * (see dspMmuTlbEntry()).
27  */
28 #define SHMBASENAME "SHM_BEG"
29 #define EXTBASE "EXT_BEG"
30 #define EXTEND "_EXT_END"
31 #define DYNEXTBASE "_DYNEXT_BEG"
32 #define DYNEXTEND "_DYNEXT_END"
33 #define IVAEXTMEMBASE "_IVAEXTMEM_BEG"
34 #define IVAEXTMEMEND "_IVAEXTMEM_END"
35 
36 #define DSP_TRACESEC_BEG "_BRIDGE_TRACE_BEG"
37 #define DSP_TRACESEC_END "_BRIDGE_TRACE_END"
38 
39 #define SYS_PUTCBEG "_SYS_PUTCBEG"
40 #define SYS_PUTCEND "_SYS_PUTCEND"
41 #define BRIDGE_SYS_PUTC_CURRENT "_BRIDGE_SYS_PUTC_current"
42 
43 #define WORDSWAP_ENABLE 0x3 /* Enable word swap */
44 
45 /*
46  * ======== read_ext_dsp_data ========
47  * Reads it from DSP External memory. The external memory for the DSP
48  * is configured by the combination of DSP MMU and shm Memory manager in the CDB
49  */
50 extern int read_ext_dsp_data(struct bridge_dev_context *dev_ctxt,
51  u8 *host_buff, u32 dsp_addr,
52  u32 ul_num_bytes, u32 mem_type);
53 
54 /*
55  * ======== write_dsp_data ========
56  */
57 extern int write_dsp_data(struct bridge_dev_context *dev_context,
58  u8 *host_buff, u32 dsp_addr,
59  u32 ul_num_bytes, u32 mem_type);
60 
61 /*
62  * ======== write_ext_dsp_data ========
63  * Writes to the DSP External memory for external program.
64  * The ext mem for progra is configured by the combination of DSP MMU and
65  * shm Memory manager in the CDB
66  */
67 extern int write_ext_dsp_data(struct bridge_dev_context *dev_context,
68  u8 *host_buff, u32 dsp_addr,
69  u32 ul_num_bytes, u32 mem_type,
70  bool dynamic_load);
71 
72 /*
73  * ======== write_ext32_bit_dsp_data ========
74  * Writes 32 bit data to the external memory
75  */
76 extern inline void write_ext32_bit_dsp_data(const
77  struct bridge_dev_context *dev_context,
78  u32 dsp_addr, u32 val)
79 {
80  *(u32 *) dsp_addr = ((dev_context->tc_word_swap_on) ? (((val << 16) &
81  0xFFFF0000) |
82  ((val >> 16) &
83  0x0000FFFF)) :
84  val);
85 }
86 
87 /*
88  * ======== read_ext32_bit_dsp_data ========
89  * Reads 32 bit data from the external memory
90  */
91 extern inline u32 read_ext32_bit_dsp_data(const struct bridge_dev_context
92  *dev_context, u32 dsp_addr)
93 {
94  u32 ret;
95  ret = *(u32 *) dsp_addr;
96 
97  ret = ((dev_context->tc_word_swap_on) ? (((ret << 16)
98  & 0xFFFF0000) | ((ret >> 16) &
99  0x0000FFFF))
100  : ret);
101  return ret;
102 }
103 
104 #endif /* _TIOMAP_IO_ */
Generated on Thu Jan 10 2013 14:31:57 for Linux Kernel by   doxygen 1.8.2