blob: 779ebed07074abcce2820d07dd6fc7252a238a9d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006 by Barry Wardell
*
* 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 distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifdef CPU_PP
#ifdef HAVE_BOOTLOADER_USB_MODE
#define ATA_DRIVER_CLOSE
#endif
/* primary channel */
#define ATA_DATA (*((volatile unsigned short*)(IDE_BASE + 0x1e0)))
#define ATA_ERROR (*((volatile unsigned char*)(IDE_BASE + 0x1e4)))
#define ATA_NSECTOR (*((volatile unsigned char*)(IDE_BASE + 0x1e8)))
#define ATA_SECTOR (*((volatile unsigned char*)(IDE_BASE + 0x1ec)))
#define ATA_LCYL (*((volatile unsigned char*)(IDE_BASE + 0x1f0)))
#define ATA_HCYL (*((volatile unsigned char*)(IDE_BASE + 0x1f4)))
#define ATA_SELECT (*((volatile unsigned char*)(IDE_BASE + 0x1f8)))
#define ATA_COMMAND (*((volatile unsigned char*)(IDE_BASE + 0x1fc)))
#define ATA_CONTROL (*((volatile unsigned char*)(IDE_BASE + 0x3f8)))
#if (CONFIG_CPU == PP5002)
#define ATA_OUT8(reg,val) do { reg = (val); \
while (!(IDE_CFG_STATUS & 0x40)); \
} while (0)
/* Plain C reading and writing. See comment in ata-as-arm.S */
#elif defined CPU_PP502x
/* asm optimized reading and writing */
#define ATA_OPTIMIZED_READING
#define ATA_OPTIMIZED_WRITING
void copy_read_sectors(unsigned char* buf, int wordcount);
void copy_write_sectors(const unsigned char* buf, int wordcount);
#endif /* CONFIG_CPU */
#endif
void ata_reset(void);
bool ata_is_coldstart(void);
void ata_device_init(void);
#ifdef HAVE_ATA_DMA
/* IDE DMA controller registers */
#define IDE_DMA_CONTROL (*(volatile unsigned long *)(0xc3000400))
#define IDE_DMA_LENGTH (*(volatile unsigned long *)(0xc3000408))
#define IDE_DMA_ADDR (*(volatile unsigned long *)(0xc300040C))
/* Maximum multi-word DMA mode supported by the controller */
#define ATA_MAX_MWDMA 2
#ifndef BOOTLOADER
/* The PP5020 supports UDMA 4, but it needs cpu boosting and only
* improves performance by ~10% with a stock disk.
* UDMA 2 is stable at 30 Mhz.
* UDMA 1 is stable at 24 Mhz.
*/
#if CPUFREQ_NORMAL >= 30000000
#define ATA_MAX_UDMA 2
#elif CPUFREQ_NORMAL >= 24000000
#define ATA_MAX_UDMA 1
#else
#error "CPU speeds under 24Mhz have not been tested with DMA"
#endif
#else
/* The bootloader runs at 24 Mhz and needs a slower mode */
#define ATA_MAX_UDMA 1
#endif
void ata_dma_set_mode(unsigned char mode);
bool ata_dma_setup(void *addr, unsigned long bytes, bool write);
bool ata_dma_finish(void);
#endif /* HAVE_ATA_DMA */
|
