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/* $NetBSD: nand_samsung.c,v 1.10 2017/11/09 21:45:24 jmcneill Exp $ */
/*-
* Copyright (c) 2012 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Adam Hoka.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* Device specific functions for legacy Samsung NAND chips
*
* Currently supported:
* K9XXG08UXA
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: nand_samsung.c,v 1.10 2017/11/09 21:45:24 jmcneill Exp $");
#include "nand.h"
#include "onfi.h"
enum {
NAND_SAMSUNG_PAGEMASK = 0x3,
NAND_SAMSUNG_SPAREMASK = 0x1 << 2,
NAND_SAMSUNG_BLOCKMASK = 0x3 << 4,
NAND_SAMSUNG_BITSMASK = 0x1 << 6
};
enum {
NAND_SAMSUNG_PLANENUMMASK = 0x3 << 2,
NAND_SAMSUNG_PLANESIZEMASK = 0x7 << 4
};
int
nand_read_parameters_samsung(device_t self, struct nand_chip * const chip)
{
uint8_t mfgrid;
uint8_t devid;
uint8_t params1;
uint8_t params2;
uint8_t params3;
/* Only for Samsung devices, obviously */
if (chip->nc_manf_id != NAND_MFR_SAMSUNG) {
return 1;
}
nand_select(self, true);
nand_command(self, ONFI_READ_ID);
nand_address(self, 0x00);
nand_read_1(self, &mfgrid);
nand_read_1(self, &devid);
nand_read_1(self, ¶ms1);
nand_read_1(self, ¶ms2);
nand_read_1(self, ¶ms3);
nand_select(self, false);
aprint_debug_dev(self,
"ID Definition table: 0x%2.x 0x%2.x 0x%2.x 0x%2.x 0x%2.x\n",
mfgrid, devid, params1, params2, params3);
/* K9XXG08UXA */
if (devid == 0xdc) {
/* From the documentation */
chip->nc_addr_cycles_column = 2;
chip->nc_addr_cycles_row = 3;
switch (params2 & NAND_SAMSUNG_PAGEMASK) {
case 0x0:
chip->nc_page_size = 1024;
break;
case 0x1:
chip->nc_page_size = 2048;
break;
case 0x2:
chip->nc_page_size = 4096;
break;
case 0x3:
chip->nc_page_size = 8192;
break;
default:
KASSERTMSG(false, "ID Data parsing bug detected!");
}
switch ((params2 & NAND_SAMSUNG_BLOCKMASK) >> 4) {
case 0x0:
chip->nc_block_size = 64 * 1024;
break;
case 0x1:
chip->nc_block_size = 128 * 1024;
break;
case 0x2:
chip->nc_block_size = 256 * 1024;
break;
case 0x3:
chip->nc_block_size = 512 * 1024;
break;
default:
KASSERTMSG(false, "ID Data parsing bug detected!");
}
/* 8/16 bytes per 512 bytes! XXX do i get this right? */
switch ((params2 & NAND_SAMSUNG_SPAREMASK) >> 2) {
case 0x0:
chip->nc_spare_size = 8 * chip->nc_page_size / 512;
break;
case 0x1:
chip->nc_spare_size = 16 * chip->nc_page_size / 512;
break;
default:
KASSERTMSG(false, "ID Data parsing bug detected!");
}
switch ((params2 & NAND_SAMSUNG_BITSMASK) >> 6) {
case 0x0:
/* its an 8bit chip */
break;
case 0x1:
chip->nc_flags |= NC_BUSWIDTH_16;
break;
default:
KASSERTMSG(false, "ID Data parsing bug detected!");
}
switch ((params3 & NAND_SAMSUNG_PLANENUMMASK) >> 2) {
case 0x0:
chip->nc_num_luns = 1;
break;
case 0x1:
chip->nc_num_luns = 2;
break;
case 0x2:
chip->nc_num_luns = 4;
break;
case 0x3:
chip->nc_num_luns = 8;
break;
default:
KASSERTMSG(false, "ID Data parsing bug detected!");
}
/* This one reads in megabit for some reason */
uint64_t planesize = 0;
switch ((params3 & NAND_SAMSUNG_PLANESIZEMASK) >> 4) {
case 0x0:
planesize = 64 * 1024 * 1024 / 8;
break;
case 0x1:
planesize = 128 * 1024 * 1024 / 8;
break;
case 0x2:
planesize = 256 * 1024 * 1024 / 8;
break;
case 0x3:
planesize = 512 * 1024 * 1024 / 8;
break;
case 0x4:
planesize = 1024 * 1024 * 1024 / 8;
break;
case 0x5:
planesize = 2ull * 1024 * 1024 * 1024 / 8;
break;
case 0x6:
planesize = 4ull * 1024 * 1024 * 1024 / 8;
break;
case 0x7:
planesize = 8ull * 1024 * 1024 * 1024 / 8;
break;
default:
KASSERTMSG(false, "ID Data parsing bug detected!");
}
chip->nc_lun_blocks = planesize / chip->nc_block_size;
chip->nc_size = planesize * chip->nc_num_luns;
aprint_normal_dev(self, "vendor: Samsung, model: K9XXG08UXA\n");
} else {
return 1;
}
return 0;
}
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