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-rw-r--r--snd-alpx/alpx_mtd.c318
1 files changed, 0 insertions, 318 deletions
diff --git a/snd-alpx/alpx_mtd.c b/snd-alpx/alpx_mtd.c
deleted file mode 100644
index d0ddd52..0000000
--- a/snd-alpx/alpx_mtd.c
+++ /dev/null
@@ -1,318 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
-* Support for Digigram AlpX PCI-e boards
-*
-* Copyright (c) 2024 Digigram Digital (info@digigram.com)
-*/
-
-#include "alpx_mtd.h"
-#include "alpx.h"
-#include "alpx_reg.h"
-
-static const u32 ALPX_FLASH_ERASED_AREA_VALUE = 0xFFFFFFFF;
-
-
-int alpx_mtd_read(struct mtd_info *mtd, loff_t from, size_t len,
- size_t *retlen, u_char *buf)
-{
- struct alpx_device *alpx_dev = mtd->priv;
- size_t size;
- u32 page_index;
- u32 offset;
- u32 cmd;
- int ret;
-
- page_index = from >> ALPX_FLASH_SECTOR_SHIFT;
- offset = from & (ALPX_FLASH_SECTOR_SIZE-1);
-
- while (len) {
- if ((offset + len) > ALPX_FLASH_SECTOR_SIZE)
- size = ALPX_FLASH_SECTOR_SIZE - offset;
- else
- size = len;
-
- cmd = ALP_PROC_COMMAND_MAKE_P16(
- ALP_PROC_CMD_READ_FLASH_SECTOR, page_index);
-
- dev_dbg(alpx_dev->dev,"Reading %zu bytes Flash sector 0x%x.\n", size, page_index);
-
- mutex_lock(&alpx_dev->proc_mutex);
- ret = alpx_proc_cmd(alpx_dev, cmd);
- if (ret) {
- mutex_unlock(&alpx_dev->proc_mutex);
- dev_err(alpx_dev->dev,
- "cmd(CMD_READ_FLASH_SECTOR, 0x%x) failed (%d)\n",
- page_index, ret);
-
- return ret;
- }
-
- memcpy_fromio(buf, ALPX_AREA(alpx_dev, ALP, SHARED) + offset,
- size);
- mutex_unlock(&alpx_dev->proc_mutex);
-
- if (retlen)
- *retlen += size;
- buf += size;
- len -= size;
- offset = 0;
- page_index++;
- }
- return 0;
-}
-
-int alpx_mtd_write(struct mtd_info *mtd, loff_t to, size_t len,
- size_t *retlen, const u_char *buf)
-{
- struct alpx_device *alpx_dev = mtd->priv;
- size_t size;
- u32 page_index;
- u32 offset;
- u32 cmd;
- int ret;
-
- page_index = to >> ALPX_FLASH_SECTOR_SHIFT;
- offset = to & (ALPX_FLASH_SECTOR_SIZE-1);
-
- while (len) {
- if ((offset + len) > ALPX_FLASH_SECTOR_SIZE)
- size = ALPX_FLASH_SECTOR_SIZE - offset;
- else
- size = len;
-
- dev_dbg(alpx_dev->dev,"Writing %zu bytes to sector 0x%x.\n", size, page_index);
-
- mutex_lock(&alpx_dev->proc_mutex);
- if (size != ALPX_FLASH_SECTOR_SIZE) {
- /* Partial page write -> read modify write*/
- cmd = ALP_PROC_COMMAND_MAKE_P16(
- ALP_PROC_CMD_READ_FLASH_SECTOR, page_index);
-
- ret = alpx_proc_cmd(alpx_dev, cmd);
- if (ret) {
- mutex_unlock(&alpx_dev->proc_mutex);
- dev_err(alpx_dev->dev,
- "cmd(CMD_READ_FLASH_SECTOR, 0x%x) failed (%d)\n",
- page_index, ret);
- return ret;
- }
- }
-
- memcpy_toio(ALPX_AREA(alpx_dev, ALP, SHARED) + offset, buf,
- size);
-
- cmd = ALP_PROC_COMMAND_MAKE_P16(
- ALP_PROC_CMD_WRITE_FLASH_SECTOR, page_index);
-
- ret = alpx_proc_cmd(alpx_dev, cmd);
- if (ret) {
- mutex_unlock(&alpx_dev->proc_mutex);
- dev_err(alpx_dev->dev,
- "cmd(CMD_WRITE_FLASH_SECTOR, 0x%x) failed (%d)\n",
- page_index, ret);
- return ret;
- }
- mutex_unlock(&alpx_dev->proc_mutex);
-
- if (retlen)
- *retlen += size;
- buf += size;
- len -= size;
- offset = 0;
- page_index++;
- }
- return 0;
-}
-
-int alpx_mtd_probe(struct alpx_device *alpx_dev, const struct mtd_partition* partitions, u32 partitions_size)
-{
- struct mtd_info *mtd = &alpx_dev->mtd_info;
-
- /* Setup the MTD structure */
- mtd->type = MTD_RAM;
- mtd->flags = MTD_WRITEABLE | MTD_NO_ERASE;
- mtd->size = ALPX_FLASH_CHIP_SIZE;
- mtd->writesize = ALPX_FLASH_SECTOR_SIZE;
- mtd->writebufsize = mtd->writesize;
- mtd->priv = alpx_dev;
-
- mtd->owner = THIS_MODULE;
- mtd->dev.parent = alpx_dev->dev;
- mtd->_read = alpx_mtd_read;
- mtd->_write = alpx_mtd_write;
-
- return mtd_device_register(mtd, partitions,
- partitions_size);
-}
-
-int alpx_mtd_remove(struct alpx_device *alpx_dev)
-{
- return alpx_dev->variant->flash_partitions.qty ? mtd_device_unregister(&alpx_dev->mtd_info) : 0;
-}
-
-/* Read one Flash's page into the shared area NO LOCK DONE !!*/
-static int alpx_mtd_load_one_page_into_shared_area(struct alpx_device* alpx_dev, u32 from)
-{
- u32 page_index = from >> ALPX_FLASH_SECTOR_SHIFT;
- u32 cmd = ALP_PROC_COMMAND_MAKE_P16(
- ALP_PROC_CMD_READ_FLASH_SECTOR, page_index);
- size_t size = ALPX_FLASH_SECTOR_SIZE;
-
- int ret;
-
- /* Check requested length below FLASH sector's size, TODO check page_index too TODO check form is aligned on page */
- if (from % ALPX_FLASH_SECTOR_SIZE != 0)
- return -EINVAL;
-
- dev_dbg(alpx_dev->dev,"Reading %zu bytes Flash sector 0x%x (0x%x).\n", size, page_index, from);
-
-
- ret = alpx_proc_cmd(alpx_dev, cmd);
- if (ret) {
- dev_err(alpx_dev->dev,
- "cmd(CMD_READ_FLASH_SECTOR, 0x%x) failed (%d)\n",
- page_index, ret);
- return ret;
- }
- print_hex_dump_bytes("LOADED Shared area :", DUMP_PREFIX_NONE, ALPX_AREA(alpx_dev, ALP, SHARED), 32);
- return ret;
-}
-
-/* Store the shared area into the Flash at the to address. NO LOCK DONE */
-static int alpx_mtd_store_one_page_into_shared_area(struct alpx_device* alpx_dev, u32 to)
-{
- u32 page_index = to >> ALPX_FLASH_SECTOR_SHIFT;
- u32 cmd = ALP_PROC_COMMAND_MAKE_P16(
- ALP_PROC_CMD_WRITE_FLASH_SECTOR, page_index);
- size_t size = ALPX_FLASH_SECTOR_SIZE;
-
- int ret;
-
- print_hex_dump_bytes("STORED Shared area :", DUMP_PREFIX_NONE, ALPX_AREA(alpx_dev, ALP, SHARED), 32);
-
- /* Check requested length below FLASH sector's size, TODO check page_index too TODO check form is aligned on page */
- if (to % ALPX_FLASH_SECTOR_SIZE != 0)
- return -EINVAL;
-
- dev_dbg(alpx_dev->dev,"Storing %zu bytes to Flash sector 0x%x.\n", size, page_index);
-
- ret = alpx_proc_cmd(alpx_dev, cmd);
- if (ret) {
- dev_err(alpx_dev->dev,
- "cmd(ALP_PROC_CMD_WRITE_FLASH_SECTOR, 0x%x) failed (%d)\n",
- page_index, ret);
- return ret;
- }
-
- return ret;
-}
-
-int alpx_mtd_is_golden_prod_area_valid(struct alpx_device* alpx_dev)
-{
- int ret = 0;
-
- mutex_lock(&alpx_dev->proc_mutex);
- ret = alpx_mtd_load_one_page_into_shared_area(alpx_dev, alpx_dev->variant->flash_golden_production_base);
-
- if (!ret) {
- //Now check Production area validity per se : something set in and not in erased state
- ret = (*(u32*)ALPX_AREA(alpx_dev, ALP, SHARED)) != ALPX_FLASH_ERASED_AREA_VALUE;
- }
- else {
- dev_err(alpx_dev->dev, "Error %d when loading shared area from flash.\n", ret);
- }
- mutex_unlock(&alpx_dev->proc_mutex);
- return ret;
-}
-
-int alpx_mtd_replicate_prod_area(struct alpx_device* alpx_dev)
-{
- /* Read the USER's Production area and then write it to the GOLDEN'sProduction area */
- //Read User
-
- int ret = 0;
- mutex_lock(&alpx_dev->proc_mutex);
-
- ret= alpx_mtd_load_one_page_into_shared_area(alpx_dev,
- alpx_dev->variant->flash_partitions.partitions[ALPX_FLASH_PARTITION_PRODUCTION_ID].offset);
- if (!ret) {
- //Write it to the GOLDEN's area
- ret = alpx_mtd_store_one_page_into_shared_area(alpx_dev, alpx_dev->variant->flash_golden_production_base);
- if (ret) {
- dev_err(alpx_dev->dev,"Error %d when storing the USER's Production area into GOLDEN.\n", ret);
- }
- }
- else {
- dev_err(alpx_dev->dev,"Error %d when reading the USER's Production area.\n", ret);
- }
-
- mutex_unlock(&alpx_dev->proc_mutex);
- return ret;
-}
-
-int alpx_mtd_read_from(struct alpx_device* alpx_dev,
- uint32_t from,
- unsigned char* to,
- unsigned int length)
-{
- int ret = 0;
-
- //Check : never read more than SHARE area length
- if (length > ALP_SHARED_SIZE)
- return -EINVAL;
-
- mutex_lock(&alpx_dev->proc_mutex);
- //Load the PRODUCTION into the shared AREA, then extract the Serial Number
- ret= alpx_mtd_load_one_page_into_shared_area(alpx_dev, from);
-
- if (!ret) {
- unsigned int idx = 0;
- //NO memcpy() when dealing with SHARED Area
- for (idx = 0 ; idx < length; ++idx) {
- to[idx] = *(((unsigned char*)ALPX_AREA(alpx_dev, ALP, SHARED))+idx);
- }
- print_hex_dump_bytes("READ:", DUMP_PREFIX_NONE, to, length);
- } else {
- dev_err(alpx_dev->dev, " Error 0x%x when reading Flash memory at %d.\n", ret, from);
- }
-
- mutex_unlock(&alpx_dev->proc_mutex);
-
- return ret;
-}
-
-int alpx_mtd_load_shared_from(struct alpx_device* alpx_dev, uint32_t from)
-{
- //Only one page at the moment, must be ALP_SHARED_SIZE bytes after.
- return alpx_mtd_load_one_page_into_shared_area(alpx_dev, from);
-}
-
-int alpx_mtd_read_shared(struct alpx_device* alpx_dev,
- uint32_t at,
- unsigned char* to,
- unsigned int length)
-{
- unsigned int idx;
- //NO memcpy() when dealing with SHARED Area
- for (idx = 0 ; idx < length; ++idx) {
- to[idx] = *(((unsigned char*)ALPX_AREA(alpx_dev, ALP, SHARED))+idx + at);
- }
- print_hex_dump_bytes("READ:", DUMP_PREFIX_NONE, to, length);
- return 0;
-}
-
-int alpx_mtd_clean_shared(struct alpx_device* alpx_dev)
-{
- unsigned int idx;
- //NO memcpy() when dealing with SHARED Area
- for (idx = 0 ; idx < (ALPX_FLASH_SECTOR_SIZE / sizeof(unsigned int)); ++idx) {
- *(unsigned int*)(ALPX_AREA(alpx_dev, ALP, SHARED)+idx) = 0;
- }
- return 0;
-}
-
-int alpx_mtd_is_available(struct alpx_device* alpx_dev)
-{
- //DANTE : no MTD available yet
- return alpx_dev->variant->model != ALPX_VARIANT_MODEL_ALPDANTE;
-}
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