2 * (C) Copyright 2009 mGine co.
3 * unsik Kim <donari75@gmail.com>
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 #ifndef __MG_DISK_PRV_H__
25 #define __MG_DISK_PRV_H__
29 /* name for block device */
30 #define MG_DISK_NAME "mgd"
31 /* name for platform device */
32 #define MG_DEV_NAME "mg_disk"
34 #define MG_DISK_MAJ 240
35 #define MG_DISK_MAX_PART 16
36 #define MG_SECTOR_SIZE 512
37 #define MG_SECTOR_SIZE_MASK (512 - 1)
38 #define MG_SECTOR_SIZE_SHIFT (9)
39 #define MG_MAX_SECTS 256
41 /* Register offsets */
42 #define MG_BUFF_OFFSET 0x8000
43 #define MG_STORAGE_BUFFER_SIZE 0x200
44 #define MG_REG_OFFSET 0xC000
45 #define MG_REG_FEATURE (MG_REG_OFFSET + 2) /* write case */
46 #define MG_REG_ERROR (MG_REG_OFFSET + 2) /* read case */
47 #define MG_REG_SECT_CNT (MG_REG_OFFSET + 4)
48 #define MG_REG_SECT_NUM (MG_REG_OFFSET + 6)
49 #define MG_REG_CYL_LOW (MG_REG_OFFSET + 8)
50 #define MG_REG_CYL_HIGH (MG_REG_OFFSET + 0xA)
51 #define MG_REG_DRV_HEAD (MG_REG_OFFSET + 0xC)
52 #define MG_REG_COMMAND (MG_REG_OFFSET + 0xE) /* write case */
53 #define MG_REG_STATUS (MG_REG_OFFSET + 0xE) /* read case */
54 #define MG_REG_DRV_CTRL (MG_REG_OFFSET + 0x10)
55 #define MG_REG_BURST_CTRL (MG_REG_OFFSET + 0x12)
57 /* "Drive Select/Head Register" bit values */
58 #define MG_REG_HEAD_MUST_BE_ON 0xA0 /* These 2 bits are always on */
59 #define MG_REG_HEAD_DRIVE_MASTER (0x00 | MG_REG_HEAD_MUST_BE_ON)
60 #define MG_REG_HEAD_DRIVE_SLAVE (0x10 | MG_REG_HEAD_MUST_BE_ON)
61 #define MG_REG_HEAD_LBA_MODE (0x40 | MG_REG_HEAD_MUST_BE_ON)
64 /* "Device Control Register" bit values */
65 #define MG_REG_CTRL_INTR_ENABLE 0x0
66 #define MG_REG_CTRL_INTR_DISABLE (0x1 << 1)
67 #define MG_REG_CTRL_RESET (0x1 << 2)
68 #define MG_REG_CTRL_INTR_POLA_ACTIVE_HIGH 0x0
69 #define MG_REG_CTRL_INTR_POLA_ACTIVE_LOW (0x1 << 4)
70 #define MG_REG_CTRL_DPD_POLA_ACTIVE_LOW 0x0
71 #define MG_REG_CTRL_DPD_POLA_ACTIVE_HIGH (0x1 << 5)
72 #define MG_REG_CTRL_DPD_DISABLE 0x0
73 #define MG_REG_CTRL_DPD_ENABLE (0x1 << 6)
75 /* Status register bit */
76 /* error bit in status register */
77 #define MG_REG_STATUS_BIT_ERROR 0x01
78 /* corrected error in status register */
79 #define MG_REG_STATUS_BIT_CORRECTED_ERROR 0x04
80 /* data request bit in status register */
81 #define MG_REG_STATUS_BIT_DATA_REQ 0x08
82 /* DSC - Drive Seek Complete */
83 #define MG_REG_STATUS_BIT_SEEK_DONE 0x10
84 /* DWF - Drive Write Fault */
85 #define MG_REG_STATUS_BIT_WRITE_FAULT 0x20
86 #define MG_REG_STATUS_BIT_READY 0x40
87 #define MG_REG_STATUS_BIT_BUSY 0x80
90 #define MG_STAT_READY (MG_REG_STATUS_BIT_READY | MG_REG_STATUS_BIT_SEEK_DONE)
91 #define MG_READY_OK(s) (((s) & (MG_STAT_READY | \
92 (MG_REG_STATUS_BIT_BUSY | \
93 MG_REG_STATUS_BIT_WRITE_FAULT | \
94 MG_REG_STATUS_BIT_ERROR))) == MG_STAT_READY)
97 #define MG_REG_ERR_AMNF 0x01
98 #define MG_REG_ERR_ABRT 0x04
99 #define MG_REG_ERR_IDNF 0x10
100 #define MG_REG_ERR_UNC 0x40
101 #define MG_REG_ERR_BBK 0x80
103 /* error code for others */
104 #define MG_ERR_NONE 0
105 #define MG_ERR_TIMEOUT 0x100
106 #define MG_ERR_INIT_STAT 0x101
107 #define MG_ERR_TRANSLATION 0x102
108 #define MG_ERR_CTRL_RST 0x103
109 #define MG_ERR_NO_DRV_DATA 0x104
111 #define MG_MAX_ERRORS 16 /* Max read/write errors/sector */
112 #define MG_RESET_FREQ 4 /* Reset controller every 4th retry */
115 #define MG_CMD_RD 0x20
116 #define MG_CMD_WR 0x30
117 #define MG_CMD_SLEEP 0x99
118 #define MG_CMD_WAKEUP 0xC3
119 #define MG_CMD_ID 0xEC
120 #define MG_CMD_WR_CONF 0x3C
121 #define MG_CMD_RD_CONF 0x40
128 /* main structure for mflash driver */
130 struct mg_drv_data *drv_data;
135 * Debugging macro and defines
139 # define MG_DBG(fmt, args...) printf("%s:%d "fmt"\n", __func__, __LINE__,##args)
140 #else /* CONFIG_MG_DEBUG */
141 # define MG_DBG(fmt, args...) do { } while(0)
142 #endif /* CONFIG_MG_DEBUG */