[08d4344] | 1 | /* |
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| 2 | * ide_controller.c |
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| 3 | * |
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| 4 | * This is generic rtems driver for IDE controllers. |
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| 5 | * |
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| 6 | * Copyright (C) 2001 OKTET Ltd., St.-Petersburg, Russia |
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| 7 | * Authors: Alexandra Kossovsky <sasha@oktet.ru> |
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| 8 | * Eugeny S. Mints <Eugeny.Mints@oktet.ru> |
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| 9 | * |
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| 10 | * The license and distribution terms for this file may be |
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| 11 | * found in the file LICENSE in this distribution or at |
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| 12 | * http://www.OARcorp.com/rtems/license.html. |
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| 13 | * |
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| 14 | * $Id$ |
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| 15 | * |
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| 16 | */ |
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| 17 | #include <chain.h> |
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| 18 | #include <assert.h> |
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| 19 | #include <rtems/blkdev.h> |
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| 20 | |
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| 21 | #include <libchip/ide_ctrl_cfg.h> |
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| 22 | #include <libchip/ide_ctrl_io.h> |
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| 23 | |
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| 24 | /* |
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| 25 | * ide_controller_initialize -- |
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| 26 | * Initializes all configured IDE controllers. Controllers configuration |
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| 27 | * table is provided by BSP |
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| 28 | * |
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| 29 | * PARAMETERS: |
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| 30 | * major - device major number |
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| 31 | * minor_arg - device minor number |
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| 32 | * args - arguments |
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| 33 | * |
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| 34 | * RETURNS: |
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| 35 | * RTEMS_SUCCESSFUL on success, or error code if |
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| 36 | * error occured |
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| 37 | */ |
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| 38 | rtems_device_driver |
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| 39 | ide_controller_initialize(rtems_device_major_number major, |
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| 40 | rtems_device_minor_number minor_arg, |
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| 41 | void *args) |
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| 42 | { |
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| 43 | unsigned long minor; |
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| 44 | rtems_status_code status; |
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| 45 | |
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| 46 | /* FIXME: may be it should be done on compilation phase */ |
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| 47 | if (IDE_Controller_Count > IDE_CTRL_MAX_MINOR_NUMBER) |
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| 48 | rtems_fatal_error_occurred(RTEMS_TOO_MANY); |
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| 49 | |
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| 50 | for (minor=0; minor < IDE_Controller_Count; minor++) |
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| 51 | { |
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| 52 | IDE_Controller_Table[minor].status = IDE_CTRL_NON_INITIALIZED; |
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| 53 | |
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| 54 | if ((IDE_Controller_Table[minor].probe != NULL && |
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| 55 | IDE_Controller_Table[minor].probe(minor)) || |
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| 56 | IDE_Controller_Table[minor].fns->ctrl_probe(minor)) |
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| 57 | { |
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| 58 | status = rtems_io_register_name(IDE_Controller_Table[minor].name, |
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| 59 | major, minor); |
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| 60 | if (status != RTEMS_SUCCESSFUL) |
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| 61 | rtems_fatal_error_occurred(status); |
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| 62 | |
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| 63 | IDE_Controller_Table[minor].fns->ctrl_initialize(minor); |
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| 64 | |
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| 65 | IDE_Controller_Table[minor].status = IDE_CTRL_INITIALIZED; |
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| 66 | } |
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| 67 | } |
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| 68 | return RTEMS_SUCCESSFUL; |
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| 69 | } |
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| 70 | |
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| 71 | /* |
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| 72 | * ide_controller_read_data_block -- |
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| 73 | * Read data block via controller's data register |
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| 74 | * |
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| 75 | * PARAMETERS: |
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| 76 | * minor - minor number of controller |
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| 77 | * block_size - number of bytes to read |
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| 78 | * bufs - set of buffers to store data |
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| 79 | * cbuf - number of current buffer from the set |
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| 80 | * pos - position inside current buffer 'cbuf' |
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| 81 | * |
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| 82 | * RETURNS: |
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| 83 | * NONE |
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| 84 | */ |
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| 85 | void |
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| 86 | ide_controller_read_data_block(rtems_device_minor_number minor, |
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| 87 | unsigned16 block_size, |
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| 88 | blkdev_sg_buffer *bufs, |
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| 89 | rtems_unsigned32 *cbuf, |
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| 90 | rtems_unsigned32 *pos) |
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| 91 | { |
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| 92 | IDE_Controller_Table[minor].fns->ctrl_read_block(minor, block_size, bufs, |
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| 93 | cbuf, pos); |
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| 94 | } |
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| 95 | |
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| 96 | /* |
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| 97 | * ide_controller_write_data_block -- |
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| 98 | * Write data block via controller's data register |
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| 99 | * |
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| 100 | * PARAMETERS: |
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| 101 | * minor - minor number of controller |
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| 102 | * block_size - number of bytes to write |
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| 103 | * bufs - set of buffers which store data |
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| 104 | * cbuf - number of current buffer from the set |
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| 105 | * pos - position inside current buffer 'cbuf' |
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| 106 | * |
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| 107 | * RETURNS: |
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| 108 | * NONE |
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| 109 | */ |
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| 110 | void |
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| 111 | ide_controller_write_data_block(rtems_device_minor_number minor, |
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| 112 | unsigned16 block_size, |
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| 113 | blkdev_sg_buffer *bufs, |
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| 114 | rtems_unsigned32 *cbuf, |
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| 115 | rtems_unsigned32 *pos) |
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| 116 | |
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| 117 | { |
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| 118 | IDE_Controller_Table[minor].fns->ctrl_write_block(minor, block_size, bufs, |
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| 119 | cbuf, pos); |
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| 120 | } |
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| 121 | |
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| 122 | /* |
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| 123 | * ide_controller_read_register -- |
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| 124 | * Read controller's register |
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| 125 | * |
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| 126 | * PARAMETERS: |
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| 127 | * minor - minor number of controller |
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| 128 | * reg - register to read |
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| 129 | * value - placeholder for result |
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| 130 | * |
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| 131 | * RETURNS |
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| 132 | * NONE |
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| 133 | */ |
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| 134 | void |
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| 135 | ide_controller_read_register(rtems_device_minor_number minor, |
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| 136 | int reg, |
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| 137 | unsigned16 *value) |
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| 138 | { |
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| 139 | IDE_Controller_Table[minor].fns->ctrl_reg_read(minor, reg, value); |
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| 140 | } |
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| 141 | |
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| 142 | /* |
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| 143 | * ide_controller_write_register -- |
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| 144 | * Write controller's register |
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| 145 | * |
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| 146 | * PARAMETERS: |
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| 147 | * minor - minor number of controller |
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| 148 | * reg - register to write |
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| 149 | * value - value to write |
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| 150 | * |
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| 151 | * RETURNS: |
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| 152 | * NONE |
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| 153 | */ |
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| 154 | void |
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| 155 | ide_controller_write_register(rtems_device_minor_number minor, int reg, |
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| 156 | unsigned16 value) |
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| 157 | { |
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| 158 | IDE_Controller_Table[minor].fns->ctrl_reg_write(minor, reg, value); |
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| 159 | } |
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| 160 | |
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| 161 | /* |
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| 162 | * ide_controller_config_io_speed -- |
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| 163 | * Set controller's speed of IO operations |
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| 164 | * |
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| 165 | * PARAMETERS: |
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| 166 | * minor - minor number of controller |
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| 167 | * modes_avaible - speeds available |
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| 168 | * |
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| 169 | * RETURNS: |
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| 170 | * RTEMS_SUCCESSFUL on success, or error code if |
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| 171 | * error occured |
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| 172 | */ |
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| 173 | rtems_status_code |
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| 174 | ide_controller_config_io_speed(int minor, unsigned8 modes_avaible) |
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| 175 | { |
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| 176 | return IDE_Controller_Table[minor].fns->ctrl_config_io_speed( |
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| 177 | minor, |
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| 178 | modes_avaible); |
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| 179 | } |
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