msm_shared: sdhci: Add mmc wrapper api's for backward compatibility
Change-Id: I8a669a10f288c1f3274f33e3355cbb5f3ef2d0d1
diff --git a/platform/msm_shared/include/mmc_wrapper.h b/platform/msm_shared/include/mmc_wrapper.h
new file mode 100644
index 0000000..5b12990
--- /dev/null
+++ b/platform/msm_shared/include/mmc_wrapper.h
@@ -0,0 +1,44 @@
+/* Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials provided
+ * with the distribution.
+ * * Neither the name of The Linux Foundation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __MMC_WRAPPER_H__
+#define __MMC_WRAPPER_H__
+
+#include <mmc_sdhci.h>
+
+/* Wrapper APIs */
+
+struct mmc_device *get_mmc_device();
+uint32_t mmc_get_psn(void);
+
+uint32_t mmc_read(uint64_t data_addr, uint32_t *out, uint32_t data_len);
+uint32_t mmc_write(uint64_t data_addr, uint32_t data_len, void *in);
+uint32_t mmc_erase_card(uint64_t, uint64_t);
+uint64_t mmc_get_device_capacity(void);
+uint32_t mmc_erase_card(uint64_t addr, uint64_t len);
+#endif
diff --git a/platform/msm_shared/mmc_wrapper.c b/platform/msm_shared/mmc_wrapper.c
new file mode 100644
index 0000000..c56a61e
--- /dev/null
+++ b/platform/msm_shared/mmc_wrapper.c
@@ -0,0 +1,171 @@
+/* Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials provided
+ * with the distribution.
+ * * Neither the name of The Linux Foundation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <mmc_sdhci.h>
+#include <mmc_wrapper.h>
+#include <sdhci.h>
+#include <target.h>
+
+/*
+ * Function: get mmc card
+ * Arg : None
+ * Return : Pointer to mmc card structure
+ * Flow : Get the card pointer from the device structure
+ */
+static struct mmc_card *get_mmc_card()
+{
+ struct mmc_device *dev;
+ struct mmc_card *card;
+
+ dev = target_mmc_device();
+ card = &dev->card;
+
+ return card;
+}
+
+/*
+ * Function: mmc_write
+ * Arg : Data address on card, data length, i/p buffer
+ * Return : 0 on Success, non zero on failure
+ * Flow : Write the data from in to the card
+ */
+uint32_t mmc_write(uint64_t data_addr, uint32_t data_len, void *in)
+{
+ int val = 0;
+ uint32_t write_size = SDHCI_ADMA_MAX_TRANS_SZ;
+ void *sptr = in;
+ struct mmc_device *dev;
+
+ dev = target_mmc_device();
+
+ ASSERT(!(data_addr % MMC_BLK_SZ));
+
+ if (data_len % MMC_BLK_SZ)
+ data_len = ROUNDUP(data_len, MMC_BLK_SZ);
+
+ /* TODO: This function is aware of max data that can be
+ * tranferred using sdhci adma mode, need to have a cleaner
+ * implementation to keep this function independent of sdhci
+ * limitations
+ */
+ while (data_len > write_size) {
+ val = mmc_sdhci_write(dev, sptr, (data_addr / MMC_BLK_SZ), (write_size / MMC_BLK_SZ));
+ sptr += write_size;
+ data_addr += write_size;
+ data_len -= write_size;
+ }
+
+ if (data_len)
+ val = mmc_sdhci_write(dev, sptr, (data_addr / MMC_BLK_SZ), (data_len / MMC_BLK_SZ));
+
+ return val;
+}
+
+/*
+ * Function: mmc_read
+ * Arg : Data address on card, o/p buffer & data length
+ * Return : 0 on Success, non zero on failure
+ * Flow : Read data from the card to out
+ */
+uint32_t mmc_read(uint64_t data_addr, uint32_t *out, uint32_t data_len)
+{
+ uint32_t ret = 0;
+ uint32_t read_size = SDHCI_ADMA_MAX_TRANS_SZ;
+ struct mmc_device *dev;
+ void *sptr = out;
+
+ ASSERT(!(data_addr % MMC_BLK_SZ));
+ ASSERT(!(data_len % MMC_BLK_SZ));
+
+ dev = target_mmc_device();
+
+ /* TODO: This function is aware of max data that can be
+ * tranferred using sdhci adma mode, need to have a cleaner
+ * implementation to keep this function independent of sdhci
+ * limitations
+ */
+ while (data_len > read_size) {
+ ret = mmc_sdhci_read(dev, sptr, (data_addr / MMC_BLK_SZ), (read_size / MMC_BLK_SZ));
+ sptr += read_size;
+ data_addr += read_size;
+ data_len -= read_size;
+ }
+
+ if (data_len)
+ ret = mmc_sdhci_read(dev, sptr, (data_addr / MMC_BLK_SZ), (data_len / MMC_BLK_SZ));
+
+ return ret;
+}
+
+/*
+ * Function: mmc erase card
+ * Arg : Block address & length
+ * Return : Returns 0
+ * Flow : This is dummy API for backward compatibility
+ * erase is not supported for sdhci
+ */
+uint32_t mmc_erase_card(uint64_t addr, uint64_t len)
+{
+ /* TODO: Right now with sdhci erase function
+ * is not implemented, need to be added
+ */
+ return 0;
+}
+
+/*
+ * Function: mmc get psn
+ * Arg : None
+ * Return : Returns the product serial number
+ * Flow : Get the PSN from card
+ */
+uint32_t mmc_get_psn(void)
+{
+ struct mmc_card *card;
+
+ card = get_mmc_card();
+
+ return card->cid.psn;
+}
+
+/*
+ * Function: mmc get capacity
+ * Arg : None
+ * Return : Returns the density of the emmc card
+ * Flow : Get the density from card
+ */
+uint64_t mmc_get_device_capacity()
+{
+ struct mmc_card *card;
+
+ card = get_mmc_card();
+
+ return card->capacity;
+}
+