1/* $NetBSD: nand_micron.c,v 1.5 2011/06/28 07:16:11 ahoka Exp $ */ 2 3/*- 4 * Copyright (c) 2011 Department of Software Engineering, 5 * University of Szeged, Hungary 6 * Copyright (c) 2011 Adam Hoka <ahoka@NetBSD.org> 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to The NetBSD Foundation 10 * by the Department of Software Engineering, University of Szeged, Hungary 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34/* 35 * Device specific functions for legacy Micron NAND chips 36 * 37 * Currently supported: 38 * MT29F2G08AACWP, MT29F4G08BACWP, MT29F8G08FACWP 39 */ 40 41#include <sys/cdefs.h> 42__KERNEL_RCSID(0, "$NetBSD: nand_micron.c,v 1.5 2011/06/28 07:16:11 ahoka Exp $"); 43 44#include "nand.h" 45#include "onfi.h" 46 47#define MT29F2G08AAC 0xda 48#define MT29F2G08ABC 0xaa 49#define MT29F2G16AAC 0xca 50#define MT29F2G16ABC 0xba 51#define MT29F4G08BAC 0xdc 52#define MT29F8G08FAC 0xdc /* each 4GB section */ 53 54#define MT29FxG_PARAM_WIDTH(p) (((p) >> 1) & __BIT(0)) 55#define MT29FxG_PAGESIZE (2 * 1024) 56#define MT29FxG_BLOCK_PAGES 64 /* pages per block */ 57#define MT29FxG_BLOCKSIZE (128 * 1024) /* not including spares */ 58#define MT29FxG_SPARESIZE 64 59 60struct nand_micron_devices { 61 const char *name; 62 uint8_t id; 63 uint8_t width; /* bus width */ 64 u_int lun_blocks; /* number of blocks per LUN */ 65 u_int num_luns; /* number LUNs */ 66}; 67 68static const struct nand_micron_devices nand_micron_devices[] = { 69 { "MT29F2G08AAC", MT29F2G08AAC, 8, 2048, 1 }, 70 { "MT29F2G08ABC", MT29F2G08ABC, 8, 2048, 1 }, 71 { "MT29F2G16AAC", MT29F2G16AAC, 16, 2048, 1 }, 72 { "MT29F2G16ABC", MT29F2G16ABC, 16, 2048, 1 }, 73 { "MT29F4G08BAC", MT29F4G08BAC, 8, 4096, 1 }, 74#ifdef NOTYET 75 /* how do we recognize/match this? */ 76 { "MT29F8G08FAC", MT29F8G08FAC, 8, 4096, 2 }, 77#endif 78}; 79 80static int mt29fxgx_parameters(device_t, struct nand_chip *, u_int8_t, uint8_t); 81 82static const struct nand_micron_devices * 83nand_micron_device_lookup(u_int8_t id) 84{ 85 for (int i=0; i < __arraycount(nand_micron_devices); i++) 86 if (nand_micron_devices[i].id == id) 87 return &nand_micron_devices[i]; 88 return NULL; 89} 90 91int 92nand_read_parameters_micron(device_t self, struct nand_chip * const chip) 93{ 94 uint8_t mfgrid; 95 uint8_t devid; 96 uint8_t dontcare; 97 uint8_t params; 98 99 KASSERT(chip->nc_manf_id == NAND_MFR_MICRON); 100 switch (chip->nc_manf_id) { 101 case NAND_MFR_MICRON: 102 break; 103 default: 104 return 1; 105 } 106 107 nand_select(self, true); 108 nand_command(self, ONFI_READ_ID); 109 nand_address(self, 0x00); 110 nand_read_1(self, &mfgrid); 111 nand_read_1(self, &devid); 112 nand_read_1(self, &dontcare); 113 nand_read_1(self, ¶ms); 114 nand_select(self, false); 115 116 KASSERT(chip->nc_manf_id == mfgrid); 117 118 switch(devid) { 119 case MT29F2G08AAC: 120 case MT29F2G08ABC: 121 case MT29F2G16AAC: 122 case MT29F2G16ABC: 123 case MT29F4G08BAC: 124 return mt29fxgx_parameters(self, chip, devid, params); 125 default: 126 aprint_error_dev(self, "unsupported device id %#x\n", devid); 127 return 1; 128 } 129} 130 131static int 132mt29fxgx_parameters(device_t self, struct nand_chip * const chip, 133 u_int8_t devid, uint8_t params) 134{ 135 const struct nand_micron_devices *dp; 136 const char *vendor = "Micron"; 137 138 dp = nand_micron_device_lookup(devid); 139 if (dp == NULL) { 140 aprint_error_dev(self, "unknown device id %#x\n", devid); 141 return 1; 142 } 143 144 /* 145 * MT29FxGx params across models are the same 146 * except for luns, blocks per lun, and bus width 147 * (and voltage) 148 */ 149 chip->nc_addr_cycles_column = 2; /* XXX */ 150 chip->nc_addr_cycles_row = 3; /* XXX */ 151 if (dp->width == 16) 152 chip->nc_flags |= NC_BUSWIDTH_16; 153 chip->nc_page_size = MT29FxG_PAGESIZE; 154 chip->nc_block_pages = MT29FxG_BLOCK_PAGES; 155 chip->nc_block_size = MT29FxG_BLOCK_PAGES * MT29FxG_PAGESIZE; 156 chip->nc_spare_size = MT29FxG_SPARESIZE; 157 chip->nc_lun_blocks = dp->lun_blocks; 158 chip->nc_num_luns = dp->num_luns; 159 chip->nc_size = MT29FxG_PAGESIZE * MT29FxG_BLOCK_PAGES * 160 dp->lun_blocks * dp->num_luns; 161 162 aprint_normal_dev(self, "%s %s, size %zuMB\n", 163 vendor, dp->name, chip->nc_size >> 20); 164 165 return 0; 166} 167