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Diffstat (limited to 'sys/dev/nand/nfc_if.m')
| -rw-r--r-- | sys/dev/nand/nfc_if.m | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/sys/dev/nand/nfc_if.m b/sys/dev/nand/nfc_if.m new file mode 100644 index 0000000..a4e1099 --- /dev/null +++ b/sys/dev/nand/nfc_if.m @@ -0,0 +1,165 @@ +#- +# Copyright (C) 2009-2012 Semihalf +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. 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. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR 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. +# +# $FreeBSD$ + +# NAND controller interface description +# + +#include <sys/bus.h> +#include <dev/nand/nand.h> + +INTERFACE nfc; + +CODE { + static int nfc_default_method(device_t dev) + { + return (0); + } + + static int nfc_softecc_get(device_t dev, void *buf, int pagesize, + void *ecc, int *needwrite) + { + *needwrite = 1; + return (nand_softecc_get(dev, buf, pagesize, ecc)); + } + + static int nfc_softecc_correct(device_t dev, void *buf, int pagesize, + void *readecc, void *calcecc) + { + return (nand_softecc_correct(dev, buf, pagesize, readecc, + calcecc)); + } +}; + +# Send command to a NAND chip +# +# Return values: +# 0: Success +# +METHOD int send_command { + device_t dev; + uint8_t command; +}; + +# Send address to a NAND chip +# +# Return values: +# 0: Success +# +METHOD int send_address { + device_t dev; + uint8_t address; +}; + +# Read byte +# +# Return values: +# byte read +# +METHOD uint8_t read_byte { + device_t dev; +}; + +# Write byte +# +METHOD void write_byte { + device_t dev; + uint8_t byte; +}; + +# Read word +# +# Return values: +# word read +# +METHOD uint16_t read_word { + device_t dev; +}; + +# Write word +# +METHOD void write_word { + device_t dev; + uint16_t word; +}; + +# Read buf +# +METHOD void read_buf { + device_t dev; + void *buf; + uint32_t len; +}; + +# Write buf +# +METHOD void write_buf { + device_t dev; + void *buf; + uint32_t len; +}; + +# Select CS +# +METHOD int select_cs { + device_t dev; + uint8_t cs; +}; + +# Read ready/busy signal +# +METHOD int read_rnb { + device_t dev; +}; + +# Start command +# +# Return values: +# 0: Success +# +METHOD int start_command { + device_t dev; +} DEFAULT nfc_default_method; + +# Generate ECC or get it from H/W +# +METHOD int get_ecc { + device_t dev; + void *buf; + int pagesize; + void *ecc; + int *needwrite; +} DEFAULT nfc_softecc_get; + +# Correct ECC +# +METHOD int correct_ecc { + device_t dev; + void *buf; + int pagesize; + void *readecc; + void *calcecc; +} DEFAULT nfc_softecc_correct; |
