Channagoud Kadabi | 4ed511f | 2013-03-11 16:10:18 -0700 | [diff] [blame] | 1 | /* Copyright (c) 2013, The Linux Foundation. All rights reserved. |
| 2 | * |
| 3 | * Redistribution and use in source and binary forms, with or without |
| 4 | * modification, are permitted provided that the following conditions are |
| 5 | * met: |
| 6 | * * Redistributions of source code must retain the above copyright |
| 7 | * notice, this list of conditions and the following disclaimer. |
| 8 | * * Redistributions in binary form must reproduce the above |
| 9 | * copyright notice, this list of conditions and the following |
| 10 | * disclaimer in the documentation and/or other materials provided |
| 11 | * with the distribution. |
| 12 | * * Neither the name of The Linux Foundation nor the names of its |
| 13 | * contributors may be used to endorse or promote products derived |
| 14 | * from this software without specific prior written permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 18 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
| 20 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 23 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| 25 | * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| 26 | * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #include <stdlib.h> |
| 30 | #include <stdint.h> |
| 31 | #include <mmc_sdhci.h> |
| 32 | #include <mmc_wrapper.h> |
| 33 | #include <sdhci.h> |
| 34 | #include <target.h> |
| 35 | |
| 36 | /* |
| 37 | * Function: get mmc card |
| 38 | * Arg : None |
| 39 | * Return : Pointer to mmc card structure |
| 40 | * Flow : Get the card pointer from the device structure |
| 41 | */ |
| 42 | static struct mmc_card *get_mmc_card() |
| 43 | { |
| 44 | struct mmc_device *dev; |
| 45 | struct mmc_card *card; |
| 46 | |
| 47 | dev = target_mmc_device(); |
| 48 | card = &dev->card; |
| 49 | |
| 50 | return card; |
| 51 | } |
| 52 | |
| 53 | /* |
| 54 | * Function: mmc_write |
| 55 | * Arg : Data address on card, data length, i/p buffer |
| 56 | * Return : 0 on Success, non zero on failure |
| 57 | * Flow : Write the data from in to the card |
| 58 | */ |
| 59 | uint32_t mmc_write(uint64_t data_addr, uint32_t data_len, void *in) |
| 60 | { |
| 61 | int val = 0; |
| 62 | uint32_t write_size = SDHCI_ADMA_MAX_TRANS_SZ; |
| 63 | void *sptr = in; |
| 64 | struct mmc_device *dev; |
| 65 | |
| 66 | dev = target_mmc_device(); |
| 67 | |
| 68 | ASSERT(!(data_addr % MMC_BLK_SZ)); |
| 69 | |
| 70 | if (data_len % MMC_BLK_SZ) |
| 71 | data_len = ROUNDUP(data_len, MMC_BLK_SZ); |
| 72 | |
| 73 | /* TODO: This function is aware of max data that can be |
| 74 | * tranferred using sdhci adma mode, need to have a cleaner |
| 75 | * implementation to keep this function independent of sdhci |
| 76 | * limitations |
| 77 | */ |
| 78 | while (data_len > write_size) { |
| 79 | val = mmc_sdhci_write(dev, sptr, (data_addr / MMC_BLK_SZ), (write_size / MMC_BLK_SZ)); |
| 80 | sptr += write_size; |
| 81 | data_addr += write_size; |
| 82 | data_len -= write_size; |
| 83 | } |
| 84 | |
| 85 | if (data_len) |
| 86 | val = mmc_sdhci_write(dev, sptr, (data_addr / MMC_BLK_SZ), (data_len / MMC_BLK_SZ)); |
| 87 | |
| 88 | return val; |
| 89 | } |
| 90 | |
| 91 | /* |
| 92 | * Function: mmc_read |
| 93 | * Arg : Data address on card, o/p buffer & data length |
| 94 | * Return : 0 on Success, non zero on failure |
| 95 | * Flow : Read data from the card to out |
| 96 | */ |
| 97 | uint32_t mmc_read(uint64_t data_addr, uint32_t *out, uint32_t data_len) |
| 98 | { |
| 99 | uint32_t ret = 0; |
| 100 | uint32_t read_size = SDHCI_ADMA_MAX_TRANS_SZ; |
| 101 | struct mmc_device *dev; |
| 102 | void *sptr = out; |
| 103 | |
| 104 | ASSERT(!(data_addr % MMC_BLK_SZ)); |
| 105 | ASSERT(!(data_len % MMC_BLK_SZ)); |
| 106 | |
| 107 | dev = target_mmc_device(); |
| 108 | |
| 109 | /* TODO: This function is aware of max data that can be |
| 110 | * tranferred using sdhci adma mode, need to have a cleaner |
| 111 | * implementation to keep this function independent of sdhci |
| 112 | * limitations |
| 113 | */ |
| 114 | while (data_len > read_size) { |
| 115 | ret = mmc_sdhci_read(dev, sptr, (data_addr / MMC_BLK_SZ), (read_size / MMC_BLK_SZ)); |
| 116 | sptr += read_size; |
| 117 | data_addr += read_size; |
| 118 | data_len -= read_size; |
| 119 | } |
| 120 | |
| 121 | if (data_len) |
| 122 | ret = mmc_sdhci_read(dev, sptr, (data_addr / MMC_BLK_SZ), (data_len / MMC_BLK_SZ)); |
| 123 | |
| 124 | return ret; |
| 125 | } |
| 126 | |
| 127 | /* |
| 128 | * Function: mmc erase card |
| 129 | * Arg : Block address & length |
| 130 | * Return : Returns 0 |
Channagoud Kadabi | d87c6b1 | 2013-05-29 15:22:03 -0700 | [diff] [blame^] | 131 | * Flow : Erase the card from specified addr |
Channagoud Kadabi | 4ed511f | 2013-03-11 16:10:18 -0700 | [diff] [blame] | 132 | */ |
| 133 | uint32_t mmc_erase_card(uint64_t addr, uint64_t len) |
| 134 | { |
Channagoud Kadabi | d87c6b1 | 2013-05-29 15:22:03 -0700 | [diff] [blame^] | 135 | struct mmc_device *dev; |
| 136 | |
| 137 | dev = target_mmc_device(); |
| 138 | |
| 139 | ASSERT(!(addr % MMC_BLK_SZ)); |
| 140 | ASSERT(!(len % MMC_BLK_SZ)); |
| 141 | |
| 142 | if (mmc_sdhci_erase(dev, (addr / MMC_BLK_SZ), len)) |
| 143 | { |
| 144 | dprintf(CRITICAL, "MMC erase failed\n"); |
| 145 | return 1; |
| 146 | } |
Channagoud Kadabi | 4ed511f | 2013-03-11 16:10:18 -0700 | [diff] [blame] | 147 | return 0; |
| 148 | } |
| 149 | |
| 150 | /* |
| 151 | * Function: mmc get psn |
| 152 | * Arg : None |
| 153 | * Return : Returns the product serial number |
| 154 | * Flow : Get the PSN from card |
| 155 | */ |
| 156 | uint32_t mmc_get_psn(void) |
| 157 | { |
| 158 | struct mmc_card *card; |
| 159 | |
| 160 | card = get_mmc_card(); |
| 161 | |
| 162 | return card->cid.psn; |
| 163 | } |
| 164 | |
| 165 | /* |
| 166 | * Function: mmc get capacity |
| 167 | * Arg : None |
| 168 | * Return : Returns the density of the emmc card |
| 169 | * Flow : Get the density from card |
| 170 | */ |
| 171 | uint64_t mmc_get_device_capacity() |
| 172 | { |
| 173 | struct mmc_card *card; |
| 174 | |
| 175 | card = get_mmc_card(); |
| 176 | |
| 177 | return card->capacity; |
| 178 | } |
| 179 | |