nand-ecoscentric: packages/io/nand/current/src/nand.c annotate

annotate packages/io/nand/current/src/nand.c @ 2994:3d3b0d53c2e5

NAND: application interface v2: functions take partition-relative addresses.

author	Ross Younger <wry@ecoscentric.com>
date	Thu, 19 Nov 2009 15:50:03 +0000
parents	d0daa15943a5
children	8502a048ad17

rev	line source
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	1 //=============================================================================
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	2 //
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	3 // nand.c
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	4 //
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	5 // Main application interface for the eCos NAND flash library
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	6 //
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	7 //=============================================================================
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	8 // ####ECOSGPLCOPYRIGHTBEGIN####
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	9 // -------------------------------------------
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	10 // This file is part of eCos, the Embedded Configurable Operating System.
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	11 // Copyright (C) 2009 eCosCentric Limited.
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	12 //
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	13 // eCos is free software; you can redistribute it and/or modify it under
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	14 // the terms of the GNU General Public License as published by the Free
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	15 // Software Foundation; either version 2 or (at your option) any later
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	16 // version.
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	17 //
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	18 // eCos is distributed in the hope that it will be useful, but WITHOUT
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	19 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	21 // for more details.
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	22 //
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	23 // You should have received a copy of the GNU General Public License
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	24 // along with eCos; if not, write to the Free Software Foundation, Inc.,
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	25 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	26 //
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	27 // As a special exception, if other files instantiate templates or use
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	28 // macros or inline functions from this file, or you compile this file
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	29 // and link it with other works to produce a work based on this file,
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	30 // this file does not by itself cause the resulting work to be covered by
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	31 // the GNU General Public License. However the source code for this file
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	32 // must still be made available in accordance with section (3) of the GNU
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	33 // General Public License v2.
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	34 //
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	35 // This exception does not invalidate any other reasons why a work based
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	36 // on this file might be covered by the GNU General Public License.
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	37 // -------------------------------------------
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	38 // ####ECOSGPLCOPYRIGHTEND####
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	39 //=============================================================================
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	40 //#####DESCRIPTIONBEGIN####
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	41 //
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	42 // Author(s): wry
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	43 // Date: 2009-03-02
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	44 //
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	45 //####DESCRIPTIONEND####
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	46 //=============================================================================
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	47
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	48 #include <cyg/hal/drv_api.h> // mutexes
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	49 #include <cyg/infra/diag.h>
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	50 #include <cyg/infra/cyg_ass.h>
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	51
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	52 #include <cyg/nand/nand.h>
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	53 #include <cyg/nand/nand_device.h>
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	54 #include <cyg/nand/nand_devtab.h>
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	55 #include <cyg/nand/util.h>
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	56 #include "nand_bbt.h"
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	57 #include CYGBLD_ISO_ERRNO_CODES_HEADER
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	58 #include <string.h>
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	59
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	60 /* ============================================================ */
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	61 // Timing instrumentation hooks; or "where is all the time going?"
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	62 // timetag_to_csv.pl will turn gdb output ("p tagslist") into CSV,
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	63 // for ease of analysis.
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	64
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	65 #ifdef CYGSEM_IO_NAND_INSTRUMENT_TIMING
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	66 # ifndef HAL_CLOCK_READ
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	67 # error HAL_CLOCK_READ required
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	68 # endif
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	69 # define TAGSIZE 1024
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	70 cyg_uint32 tagslist[TAGSIZE];
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	71 cyg_uint32 tags_next;
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	72 static cyg_int64 rtc_resolution[] = CYGNUM_KERNEL_COUNTERS_RTC_RESOLUTION;
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	73 static cyg_int64 rtc_period = CYGNUM_KERNEL_COUNTERS_RTC_PERIOD;
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	74
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	75 # define TAG(_x) do { \
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	76 tagslist[tags_next++] = _x; \
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	77 if (tags_next >= TAGSIZE) tags_next = 0; \
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	78 } while(0)
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	79
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	80 # define TIMETAG() do { \
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	81 cyg_uint64 tick; \
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	82 cyg_uint32 haltick; \
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	83 tick=cyg_current_time();\
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	84 HAL_CLOCK_READ(&haltick);\
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	85 TAG(__LINE__); \
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	86 TAG(tick&0xFFFFFFFF); \
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	87 TAG(haltick); \
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	88 } while(0)
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	89
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	90 # define TIMETAG_INIT() do { \
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	91 int _i; \
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	92 for (_i=0; _i<TAGSIZE; _i++) \
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	93 tagslist[_i]=0; \
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	94 tags_next = 0; \
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	95 cyg_uint32 _tt, _tu; \
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	96 HAL_CLOCK_READ(&_tt); \
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	97 _tu = _tt; \
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	98 while (_tt == _tu) \
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	99 HAL_CLOCK_READ(&_tu); \
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	100 TIMETAG(); \
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	101 (void) rtc_period; \
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	102 (void) rtc_resolution; \
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	103 } while(0)
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	104
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	105 #else // ! CYGSEM_IO_NAND_INSTRUMENT_TIMING
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	106
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	107 # define TIMETAG_INIT() CYG_EMPTY_STATEMENT
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	108 # define TIMETAG() CYG_EMPTY_STATEMENT
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	109
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	110 #endif
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	111
758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	112 /* ============================================================ */
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	113
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	114 /* We have a global ("devinit") lock, protects the nanddevtab and all
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	115 * writes to device->isInited.
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	116 *
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	117 * Each device also has its own lock, which protects the rest of
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	118 * the structure, and the hardware itself.
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	119 *
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	120 * Rules:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	121 * 1. Nothing can use a device until it has been fully initialised
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	122 * (i.e. they must check dev->isInited, which is not set until
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	123 * initialisation is complete);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	124 * 2. All calls to a device which has been initialised must acquire
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	125 * the device's lock, to prevent multiple access;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	126 * 3. A repeated call to initialise a device is a safe no-op (under the
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	127 * global lock, see that isInited is set, so do nothing);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	128 * 4. It is not possible for multiple threads to simultaneously
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	129 * initialise the same device [via the lookup function]
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	130 * (they are protected by the global lock - the second blocks
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	131 * until the first has completed, at which point the second thread
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	132 * sees that the device has been inited and falls out into a no-op).
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	133 *
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	134 * Therefore, an operation in devinit which uses the chip need not
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	135 * assert the per-device lock, as nothing else can use the chip until
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	136 * it has completed and set isInited to 1.
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	137 */
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	138
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	139 static cyg_drv_mutex_t devinit_lock;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	140
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	141 #define LOCK_devinit() cyg_drv_mutex_lock(&devinit_lock)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	142 #define UNLOCK_devinit() cyg_drv_mutex_unlock(&devinit_lock)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	143
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	144 /* Per-device lock.
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	145 * NB that if multiple devices might interact (e.g. sharing a CPLD),
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	146 * their drivers must act in concert to prevent this, usually at the
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	147 * platform level. */
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	148 #define LOCK_DEV(dev) cyg_drv_mutex_lock(&dev->devlock)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	149 #define UNLOCK_DEV(dev) cyg_drv_mutex_unlock(&dev->devlock)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	150
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	151 /* ============================================================ */
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	152 /* Initialisation and lookup */
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	153
2949 b72667909323 NAND: add CYGBLD_IO_NAND_BUILD_UTILS; tidy bbt code Ross Younger <wry@ecoscentric.com> parents: 2948 diff changeset	154 __externC void cyg_nand_bbt_initx(void);
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	155 static cyg_nand_printf nand_default_pf;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	156
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	157 // This is called only by the C++ static constructor. Applications
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	158 // never need to call this themselves.
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	159 __externC void cyg_nand_initx(cyg_nand_printf pf)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	160 {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	161 if (pf) CYG_CHECK_FUNC_PTRC(pf);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	162 cyg_drv_mutex_init(&devinit_lock);
2949 b72667909323 NAND: add CYGBLD_IO_NAND_BUILD_UTILS; tidy bbt code Ross Younger <wry@ecoscentric.com> parents: 2948 diff changeset	163 cyg_nand_bbt_initx();
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	164 nand_default_pf = pf;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	165 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	166
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	167 __externC
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	168 cyg_nand_partition* cyg_nand_get_partition(cyg_nand_device *dev, unsigned partno)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	169 {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	170 if ((partno < 0) \|\| (partno >= CYGNUM_NAND_MAX_PARTITIONS))
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	171 return NULL;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	172 LOCK_DEV(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	173 cyg_nand_partition *rv = &(dev->partition[partno]);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	174 UNLOCK_DEV(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	175 if (!rv->dev) return NULL; /* partition inactive */
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	176 return rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	177 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	178
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	179 __externC
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	180 int cyg_nand_lookup(const char devname, cyg_nand_device *dev_o)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	181 {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	182 int rv = -ENOENT;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	183 if (dev_o) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	184 CYG_CHECK_DATA_PTRC(dev_o);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	185 *dev_o = 0;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	186 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	187 if (!devname) return -EINVAL;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	188
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	189 LOCK_devinit(); // ++++++++++++++++++++++++++++++++++++++++++++
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	190 cyg_nand_device *dev;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	191 for (dev = &cyg_nanddevtab[0]; dev != &cyg_nanddevtab_end; dev++) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	192 if (0==strcmp(devname, dev->devname)) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	193 rv = 0;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	194 break;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	195 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	196 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	197 if (!rv) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	198 if (!dev->is_inited) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	199 int i;
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	200
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	201 if (dev->version != 2) {
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	202 NAND_ERROR(dev, "Device %s declares incompatible version %d (expected 2)", devname, dev->version);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	203 goto done;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	204 }
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	205 CYG_CHECK_DATA_PTRC(dev->fns);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	206 CYG_CHECK_FUNC_PTRC(dev->fns->devinit);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	207
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	208 dev->pf = nand_default_pf;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	209 for (i=0; i<CYGNUM_NAND_MAX_PARTITIONS; i++)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	210 dev->partition[i].dev = 0;
2989 8fb3f9a53423 Further refine CYGSEM_IO_NAND_USE_BBT, drop the relevant parts of the struct when not enabled. Ross Younger <wry@ecoscentric.com> parents: 2976 diff changeset	211 #ifdef CYGSEM_IO_NAND_USE_BBT
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	212 dev->bbt.data = 0; // Paranoia, ensure devinit sets up
2989 8fb3f9a53423 Further refine CYGSEM_IO_NAND_USE_BBT, drop the relevant parts of the struct when not enabled. Ross Younger <wry@ecoscentric.com> parents: 2976 diff changeset	213 #endif
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	214
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	215 rv = dev->fns->devinit(dev);
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	216
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	217 if (rv) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	218 NAND_ERROR(dev,"Could not initialise NAND device \"%s\": code %d\n", devname, rv);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	219 goto done;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	220 }
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	221
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	222 // Now check that we have everything we need
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	223 CYG_CHECK_FUNC_PTRC(dev->fns->read_begin);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	224 CYG_CHECK_FUNC_PTRC(dev->fns->read_stride);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	225 CYG_CHECK_FUNC_PTRC(dev->fns->read_finish);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	226 CYG_CHECK_FUNC_PTRC(dev->fns->write_begin);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	227 CYG_CHECK_FUNC_PTRC(dev->fns->write_stride);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	228 CYG_CHECK_FUNC_PTRC(dev->fns->write_finish);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	229
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	230 CYG_CHECK_FUNC_PTRC(dev->fns->erase_block);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	231 CYG_CHECK_FUNC_PTRC(dev->fns->is_factory_bad);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	232
2989 8fb3f9a53423 Further refine CYGSEM_IO_NAND_USE_BBT, drop the relevant parts of the struct when not enabled. Ross Younger <wry@ecoscentric.com> parents: 2976 diff changeset	233 #ifdef CYGSEM_IO_NAND_USE_BBT
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	234 CYG_CHECK_DATA_PTRC(dev->bbt.data);
2989 8fb3f9a53423 Further refine CYGSEM_IO_NAND_USE_BBT, drop the relevant parts of the struct when not enabled. Ross Younger <wry@ecoscentric.com> parents: 2976 diff changeset	235 #endif
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	236 CYG_CHECK_DATA_PTRC(dev->ecc);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	237 CYG_CHECK_DATA_PTRC(dev->oob);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	238 if (!dev->chipsize_log \|\|
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	239 !dev->blockcount_bits \|\|
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	240 !dev->block_page_bits \|\|
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	241 !dev->spare_per_page \|\|
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	242 !dev->page_bits \|\|
2989 8fb3f9a53423 Further refine CYGSEM_IO_NAND_USE_BBT, drop the relevant parts of the struct when not enabled. Ross Younger <wry@ecoscentric.com> parents: 2976 diff changeset	243 #ifdef CYGSEM_IO_NAND_USE_BBT
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	244 !dev->bbt.data \|\|
2989 8fb3f9a53423 Further refine CYGSEM_IO_NAND_USE_BBT, drop the relevant parts of the struct when not enabled. Ross Younger <wry@ecoscentric.com> parents: 2976 diff changeset	245 #endif
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	246 !dev->ecc \|\|
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	247 !dev->oob) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	248 NAND_ERROR(dev,"BUG: NAND driver devinit did not fill in all required fields - disabling device\n");
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	249 rv = -ENOSYS;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	250 goto done;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	251 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	252
2989 8fb3f9a53423 Further refine CYGSEM_IO_NAND_USE_BBT, drop the relevant parts of the struct when not enabled. Ross Younger <wry@ecoscentric.com> parents: 2976 diff changeset	253 #ifdef CYGSEM_IO_NAND_USE_BBT
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	254 if (dev->bbt.datasize < (1 << (dev->blockcount_bits-2)) ) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	255 NAND_ERROR(dev,"BUG: NAND driver declared bbt.data_size isn't big enough (got %lu, want %u) - disabling device\n", (unsigned long) dev->bbt.datasize, (1 << (dev->blockcount_bits-2)));
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	256 rv = -ENOSYS;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	257 goto done;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	258 }
2989 8fb3f9a53423 Further refine CYGSEM_IO_NAND_USE_BBT, drop the relevant parts of the struct when not enabled. Ross Younger <wry@ecoscentric.com> parents: 2976 diff changeset	259 #endif
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	260
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	261 if ( dev->oob->ecc_size != CYG_NAND_ECCPERPAGE(dev) ) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	262 NAND_ERROR(dev,"BUG: NAND driver has inconsistent ECC size declaration (oob says %d, ecc says %d) - disabling device\n", dev->oob->ecc_size, CYG_NAND_ECCPERPAGE(dev));
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	263 rv = -ENOSYS;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	264 goto done;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	265 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	266
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	267 // NOW we are ready to read from the device !
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	268
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	269 #ifdef CYGSEM_IO_NAND_USE_BBT
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	270 rv = cyg_nand_bbti_find_tables(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	271 if (rv == -ENOENT) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	272 NAND_CHATTER(1,dev, "Creating initial bad block table on device %s\n", devname);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	273 rv = cyg_nand_bbti_build_tables(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	274 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	275 if (rv != 0) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	276 NAND_ERROR(dev,"Cannot find or build BBT (%d)\n", -rv);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	277 goto done;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	278 }
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	279 #endif
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	280
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	281 cyg_drv_mutex_init(&dev->devlock);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	282 dev->is_inited = 1;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	283
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	284 int live_partitions = 0;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	285 for (i=0; i<CYGNUM_NAND_MAX_PARTITIONS; i++)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	286 if (dev->partition[i].dev) ++live_partitions;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	287 if (live_partitions)
2992 d0daa15943a5 NAND: cosmetic messages fix Ross Younger <wry@ecoscentric.com> parents: 2989 diff changeset	288 NAND_CHATTER(1,dev, "%s devinit complete, %u partition%c configured\n", devname, live_partitions, live_partitions==1 ? ' ' : 's' );
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	289 else
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	290 NAND_CHATTER(1,dev, "%s devinit complete, NO partitions configured!\n", devname); // hope they know what they're doing.
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	291 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	292 if (dev_o) *dev_o = dev;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	293 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	294 done:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	295 UNLOCK_devinit(); // ------------------------------------------
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	296 return rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	297 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	298
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	299 /* ============================================================ */
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	300 /* Device access */
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	301
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	302 #define DEV_INIT_CHECK(dev) do { if (!dev->is_inited) return -ENXIO; } while(0)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	303 #define PARTITION_CHECK(p) do { if (!p->dev) return -ENXIO; } while(0)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	304
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	305 // Partition-to-Device and Device-to-Partition address xlation
3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	306 #define BLOCK_P_TO_D(_part,_block) ((_block) + (_part)->first)
3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	307 #define BLOCK_D_TO_P(_part,_block) ((_block) - (_part)->first)
3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	308
3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	309 #define PAGE_P_TO_D(_part,_page) ((_page) + (_part)->first * CYG_NAND_PAGES_PER_BLOCK((_part)->dev) )
3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	310 #define PAGE_D_TO_P(_part,_page) ((_page) - (_part)->first * CYG_NAND_PAGES_PER_BLOCK((_part)->dev) )
3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	311
3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	312 /* Sanity check helpers: these take a partition and a DEVICE address */
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	313 static inline int valid_block_addr(cyg_nand_partition *part, cyg_nand_block_addr block)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	314 {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	315 return ( (block < part->first) \|\| (block > part->last) ) ? -ENOENT : 0;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	316 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	317
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	318 static int valid_page_addr(cyg_nand_partition *part, cyg_nand_page_addr page)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	319 {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	320 cyg_nand_block_addr block = CYG_NAND_PAGE2BLOCKADDR(part->dev,page);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	321 int rv = valid_block_addr(part, block);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	322 if (rv != 0)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	323 NAND_CHATTER(1,part->dev, "Invalid attempted access to page %d\n", page);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	324 return rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	325 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	326
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	327 #define EG(what) do { rv = (what); if (rv != 0) goto err_exit; } while(0)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	328
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	329 __externC
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	330 int cyg_nandp_read_page(cyg_nand_partition *prt, cyg_nand_page_addr ppage,
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	331 void * dest, void * spare, size_t spare_size)
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	332 {
2975 7050b2f79b6e NAND bbt: fix internal race Ross Younger <wry@ecoscentric.com> parents: 2970 diff changeset	333 int rv, locked=0;
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	334 TIMETAG_INIT();
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	335 PARTITION_CHECK(prt);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	336 cyg_nand_device *dev = prt->dev;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	337 DEV_INIT_CHECK(dev);
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	338 cyg_nand_page_addr page = PAGE_P_TO_D(prt,ppage);
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	339
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	340 if (spare_size > dev->spare_per_page) return -EFBIG;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	341
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	342 EG(valid_page_addr(prt, page));
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	343
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	344 #ifdef CYGSEM_IO_NAND_USE_BBT
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	345 cyg_nand_block_addr blk = CYG_NAND_PAGE2BLOCKADDR(dev,page);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	346 if (cyg_nand_bbti_query(dev, blk) != CYG_NAND_BBT_OK) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	347 NAND_CHATTER(1,dev,"Asked to read page %u in bad block %u\n", page, blk);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	348 EG(-EINVAL);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	349 }
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	350 #endif
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	351
2975 7050b2f79b6e NAND bbt: fix internal race Ross Younger <wry@ecoscentric.com> parents: 2970 diff changeset	352 LOCK_DEV(dev);
7050b2f79b6e NAND bbt: fix internal race Ross Younger <wry@ecoscentric.com> parents: 2970 diff changeset	353 locked = 1;
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	354 EG(nandi_read_whole_page_raw(dev, page, dest, spare, spare_size, 1));
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	355
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	356 err_exit:
2975 7050b2f79b6e NAND bbt: fix internal race Ross Younger <wry@ecoscentric.com> parents: 2970 diff changeset	357 if (locked) UNLOCK_DEV(dev);
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	358 TIMETAG();
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	359 return rv;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	360 }
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	361
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	362
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	363
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	364 __externC
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	365 int cyg_nandp_read_part_page(cyg_nand_partition *prt, cyg_nand_page_addr ppage,
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	366 void * dest, size_t offset, size_t length, int check_ecc)
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	367
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	368 {
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	369 int rv;
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	370 PARTITION_CHECK(prt);
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	371 cyg_nand_device *dev = prt->dev;
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	372 DEV_INIT_CHECK(dev);
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	373 cyg_nand_page_addr page = PAGE_P_TO_D(prt,ppage);
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	374 CYG_BYTE *pagebuffer;
2975 7050b2f79b6e NAND bbt: fix internal race Ross Younger <wry@ecoscentric.com> parents: 2970 diff changeset	375 int got_pagebuf = 0, locked = 0;
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	376
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	377 if (offset + length > CYG_NAND_BYTES_PER_PAGE(dev)) return -EFBIG;
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	378
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	379 EG(valid_page_addr(prt, page));
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	380
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	381 #ifdef CYGSEM_IO_NAND_USE_BBT
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	382 cyg_nand_block_addr blk = CYG_NAND_PAGE2BLOCKADDR(dev,page);
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	383 if (cyg_nand_bbti_query(dev, blk) != CYG_NAND_BBT_OK) {
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	384 NAND_CHATTER(1,dev,"Asked to read page %u in bad block %u\n", page, blk);
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	385 EG(-EINVAL);
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	386 }
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	387 #endif
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	388
2975 7050b2f79b6e NAND bbt: fix internal race Ross Younger <wry@ecoscentric.com> parents: 2970 diff changeset	389 LOCK_DEV(dev);
7050b2f79b6e NAND bbt: fix internal race Ross Younger <wry@ecoscentric.com> parents: 2970 diff changeset	390 locked = 1;
7050b2f79b6e NAND bbt: fix internal race Ross Younger <wry@ecoscentric.com> parents: 2970 diff changeset	391
2970 4d926b63650d NAND: Add device read_part_page function Ross Younger <wry@ecoscentric.com> parents: 2968 diff changeset	392 if (dev->fns->read_part_page && !check_ecc) {
4d926b63650d NAND: Add device read_part_page function Ross Younger <wry@ecoscentric.com> parents: 2968 diff changeset	393 EG(dev->fns->read_part_page(dev, dest, page, offset, length));
4d926b63650d NAND: Add device read_part_page function Ross Younger <wry@ecoscentric.com> parents: 2968 diff changeset	394 } else {
4d926b63650d NAND: Add device read_part_page function Ross Younger <wry@ecoscentric.com> parents: 2968 diff changeset	395 pagebuffer = nandi_grab_pagebuf();
4d926b63650d NAND: Add device read_part_page function Ross Younger <wry@ecoscentric.com> parents: 2968 diff changeset	396 got_pagebuf = 1;
4d926b63650d NAND: Add device read_part_page function Ross Younger <wry@ecoscentric.com> parents: 2968 diff changeset	397 EG(nandi_read_whole_page_raw(dev, page, pagebuffer, 0, 0, check_ecc));
4d926b63650d NAND: Add device read_part_page function Ross Younger <wry@ecoscentric.com> parents: 2968 diff changeset	398 if (dest)
4d926b63650d NAND: Add device read_part_page function Ross Younger <wry@ecoscentric.com> parents: 2968 diff changeset	399 memcpy(dest, &pagebuffer[offset], length);
4d926b63650d NAND: Add device read_part_page function Ross Younger <wry@ecoscentric.com> parents: 2968 diff changeset	400 }
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	401
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	402 err_exit:
2970 4d926b63650d NAND: Add device read_part_page function Ross Younger <wry@ecoscentric.com> parents: 2968 diff changeset	403 if (got_pagebuf) nandi_release_pagebuf();
2975 7050b2f79b6e NAND bbt: fix internal race Ross Younger <wry@ecoscentric.com> parents: 2970 diff changeset	404 if (locked) UNLOCK_DEV(dev);
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	405 return rv;
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	406 }
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	407
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	408
2975 7050b2f79b6e NAND bbt: fix internal race Ross Younger <wry@ecoscentric.com> parents: 2970 diff changeset	409 /* Internal, mostly-unchecked interface to read a page.
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	410 * Takes a DEVICE address.
2975 7050b2f79b6e NAND bbt: fix internal race Ross Younger <wry@ecoscentric.com> parents: 2970 diff changeset	411 * Caller must hold the devlock! */
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	412 int nandi_read_whole_page_raw(cyg_nand_device *dev, cyg_nand_page_addr page,
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	413 CYG_BYTE * dest, CYG_BYTE * spare, size_t spare_size,
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	414 int check_ecc)
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	415 {
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	416 CYG_BYTE ecc_read[CYG_NAND_ECCPERPAGE(dev)],
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	417 ecc_calc[CYG_NAND_ECCPERPAGE(dev)];
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	418 CYG_BYTE ecc_calc_p, ecc_read_p;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	419
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	420 CYG_BYTE oob_buf[dev->spare_per_page];
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	421 int rv=0,tries=0;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	422 size_t remain;
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	423 const int do_hw_ecc = (dev->ecc->flags & NAND_ECC_FLAG_IS_HARDWARE) && check_ecc;
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	424
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	425 // Stride for reading from device:
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	426 const unsigned read_data_stride = do_hw_ecc ? dev->ecc->data_size : CYG_NAND_BYTES_PER_PAGE(dev);
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	427 // Stride for calculating/checking/repairing ECC:
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	428 const unsigned ecc_data_stride = dev->ecc->data_size;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	429 // Stride within the ECC data
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	430 const unsigned ecc_stride = dev->ecc->ecc_size;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	431
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	432 if (dest) CYG_CHECK_DATA_PTRC(dest);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	433 if (spare) CYG_CHECK_DATA_PTRC(spare);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	434
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	435 CYG_ASSERTC(CYG_NAND_BYTES_PER_PAGE(dev) % ecc_data_stride == 0);
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	436
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	437 do {
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	438 CYG_BYTE *data_dest = dest;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	439 CYG_BYTE *ecc_dest = ecc_calc;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	440
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	441 ++tries;
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	442 remain = CYG_NAND_BYTES_PER_PAGE(dev);
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	443
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	444 TIMETAG();
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	445 EG(dev->fns->read_begin(dev, page));
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	446 TIMETAG();
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	447
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	448 if (dest) {
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	449 int step;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	450 while (remain) {
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	451 step = read_data_stride;
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	452 CYG_ASSERTC(remain >= read_data_stride);
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	453
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	454 TIMETAG();
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	455 if (do_hw_ecc && dev->ecc->init) dev->ecc->init(dev);
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	456 EG(dev->fns->read_stride(dev, data_dest, read_data_stride));
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	457 TIMETAG();
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	458
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	459 if (do_hw_ecc) {
2968 368f9c978e57 NAND: Drop poorly-conceived ecc sub-stride support Ross Younger <wry@ecoscentric.com> parents: 2966 diff changeset	460 dev->ecc->calc(dev, 0, ecc_dest);
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	461 ecc_dest += ecc_stride;
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	462 TIMETAG();
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	463 }
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	464
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	465 data_dest += read_data_stride;
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	466 remain -= read_data_stride;
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	467 }
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	468
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	469 TIMETAG();
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	470 EG(dev->fns->read_finish(dev, oob_buf, dev->spare_per_page));
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	471 TIMETAG();
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	472 nand_oob_unpack(dev, spare, spare_size, ecc_read, oob_buf);
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	473
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	474 if (check_ecc) {
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	475 TIMETAG();
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	476 if (!do_hw_ecc) {
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	477 // Calculate software ECC in one go to try and take
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	478 // advantage of the cache.
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	479 data_dest = dest;
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	480 remain = CYG_NAND_BYTES_PER_PAGE(dev);
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	481 ecc_calc_p = ecc_calc;
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	482
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	483 while (remain) {
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	484 if (dev->ecc->init) dev->ecc->init(dev);
2968 368f9c978e57 NAND: Drop poorly-conceived ecc sub-stride support Ross Younger <wry@ecoscentric.com> parents: 2966 diff changeset	485 dev->ecc->calc(dev, data_dest, ecc_calc_p);
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	486
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	487 remain -= ecc_data_stride;
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	488 data_dest += ecc_data_stride;
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	489 ecc_calc_p += ecc_stride;
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	490 }
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	491 }
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	492
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	493 // Now repair ...
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	494 rv = 0;
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	495 int step_rv;
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	496 remain = CYG_NAND_BYTES_PER_PAGE(dev);
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	497 data_dest = dest;
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	498
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	499 ecc_calc_p = ecc_calc;
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	500 ecc_read_p = ecc_read;
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	501
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	502 while (remain) {
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	503 CYG_ASSERTC(remain >= ecc_data_stride);
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	504
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	505 step_rv = dev->ecc->repair(dev,data_dest,ecc_data_stride,ecc_read_p,ecc_calc_p);
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	506 if (step_rv == -1) {
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	507 rv = -1;
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	508 break;
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	509 }
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	510 rv \|= step_rv;
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	511
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	512 data_dest += ecc_data_stride;
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	513 ecc_read_p += ecc_stride;
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	514 ecc_calc_p += ecc_stride;
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	515 remain -= ecc_data_stride;
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	516 }
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	517 TIMETAG();
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	518 }
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	519 } else { // !dest: very simple case
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	520 TIMETAG();
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	521 EG(dev->fns->read_finish(dev, oob_buf, dev->spare_per_page));
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	522 TIMETAG();
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	523 rv = 0;
c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	524 nand_oob_unpack(dev, spare, spare_size, ecc_read, oob_buf);
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	525 }
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	526
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	527 if (rv==-1 && (tries < CYGNUM_NAND_MAX_READ_RETRIES) ) {
2953 b8b477f45f0c NAND: cosmetic messages fix Ross Younger <wry@ecoscentric.com> parents: 2949 diff changeset	528 NAND_CHATTER(4, dev, "ECC uncorrectable error on read, retrying\n");
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	529 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	530 } while (rv==-1 && (tries < CYGNUM_NAND_MAX_READ_RETRIES) );
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	531
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	532 switch (rv) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	533 case 0:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	534 NAND_CHATTER(8,dev,"Read page %u OK\n", page);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	535 break;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	536 case 1:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	537 case 2:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	538 case 3:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	539 NAND_CHATTER(2,dev, "Page %u ECC correction, type %d\n", page,rv);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	540 rv=0;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	541 break;
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	542 case -1:
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	543 default:
2953 b8b477f45f0c NAND: cosmetic messages fix Ross Younger <wry@ecoscentric.com> parents: 2949 diff changeset	544 NAND_ERROR(dev,"Page %u read gave ECC uncorrectable error\n", page);
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	545 rv=-EIO;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	546 break;
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	547 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	548 err_exit:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	549 return rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	550 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	551
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	552 __externC
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	553 int cyg_nandp_write_page(cyg_nand_partition *prt, cyg_nand_page_addr ppage,
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	554 const void * src, const void * spare, size_t spare_size)
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	555 {
2975 7050b2f79b6e NAND bbt: fix internal race Ross Younger <wry@ecoscentric.com> parents: 2970 diff changeset	556 int rv, locked = 0;
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	557 TIMETAG_INIT();
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	558 PARTITION_CHECK(prt);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	559 cyg_nand_device *dev = prt->dev;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	560 DEV_INIT_CHECK(dev);
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	561 cyg_nand_page_addr page = PAGE_P_TO_D(prt,ppage);
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	562
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	563 EG(valid_page_addr(prt, page));
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	564
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	565 #ifdef CYGSEM_IO_NAND_USE_BBT
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	566 cyg_nand_block_addr blk = CYG_NAND_PAGE2BLOCKADDR(dev,page);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	567 if (cyg_nand_bbti_query(dev, blk) != CYG_NAND_BBT_OK) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	568 NAND_CHATTER(1,dev,"Asked to write page %u in bad block %u\n", page, blk);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	569 EG(-EINVAL);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	570 }
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	571 #endif
2975 7050b2f79b6e NAND bbt: fix internal race Ross Younger <wry@ecoscentric.com> parents: 2970 diff changeset	572 LOCK_DEV(dev);
7050b2f79b6e NAND bbt: fix internal race Ross Younger <wry@ecoscentric.com> parents: 2970 diff changeset	573 locked = 1;
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	574 EG(nandi_write_page_raw(dev, page, src, spare, spare_size));
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	575
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	576 err_exit:
2975 7050b2f79b6e NAND bbt: fix internal race Ross Younger <wry@ecoscentric.com> parents: 2970 diff changeset	577 if (locked) UNLOCK_DEV(dev);
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	578 TIMETAG();
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	579 return rv;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	580 }
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	581
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	582 /* Internal, mostly-unchecked interface to write a page.
3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	583 * Takes a DEVICE address. */
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	584 __externC
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	585 int nandi_write_page_raw(cyg_nand_device *dev, cyg_nand_page_addr page,
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	586 const CYG_BYTE * src, const CYG_BYTE * spare, size_t spare_size)
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	587 {
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	588 #ifdef CYGSEM_IO_NAND_READONLY
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	589 return -EROFS;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	590 #else
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	591 int rv;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	592 CYG_BYTE oob_packed[dev->spare_per_page];
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	593 CYG_BYTE ecc[CYG_NAND_ECCPERPAGE(dev)];
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	594
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	595 const int do_hw_ecc = (dev->ecc->flags & NAND_ECC_FLAG_IS_HARDWARE);
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	596 const unsigned write_data_stride = do_hw_ecc ? dev->ecc->data_size : CYG_NAND_BYTES_PER_PAGE(dev);
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	597 const unsigned ecc_data_stride = dev->ecc->data_size;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	598 const unsigned ecc_stride = dev->ecc->ecc_size;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	599 size_t remain;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	600 CYG_BYTE *ecc_dest = ecc;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	601
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	602 memset(ecc, 0xff, CYG_NAND_ECCPERPAGE(dev));
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	603
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	604 if (src) CYG_CHECK_DATA_PTRC(src);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	605 if (spare) CYG_CHECK_DATA_PTRC(spare);
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	606 CYG_ASSERTC(CYG_NAND_BYTES_PER_PAGE(dev) % ecc_data_stride == 0);
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	607
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	608 TIMETAG();
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	609 // If we're doing software ECC, do it all in one go now.
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	610 if (src && !do_hw_ecc) {
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	611 const CYG_BYTE *data_src = src;
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	612 remain = CYG_NAND_BYTES_PER_PAGE(dev);
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	613
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	614 while (remain) {
2968 368f9c978e57 NAND: Drop poorly-conceived ecc sub-stride support Ross Younger <wry@ecoscentric.com> parents: 2966 diff changeset	615 CYG_ASSERTC(remain >= ecc_data_stride);
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	616 if (dev->ecc->init) dev->ecc->init(dev);
2968 368f9c978e57 NAND: Drop poorly-conceived ecc sub-stride support Ross Younger <wry@ecoscentric.com> parents: 2966 diff changeset	617 dev->ecc->calc(dev, data_src, ecc_dest);
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	618
2968 368f9c978e57 NAND: Drop poorly-conceived ecc sub-stride support Ross Younger <wry@ecoscentric.com> parents: 2966 diff changeset	619 remain -= ecc_data_stride;
368f9c978e57 NAND: Drop poorly-conceived ecc sub-stride support Ross Younger <wry@ecoscentric.com> parents: 2966 diff changeset	620 data_src += ecc_data_stride;
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	621 ecc_dest += ecc_stride;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	622 }
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	623 }
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	624 TIMETAG();
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	625
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	626 EG(dev->fns->write_begin(dev, page));
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	627 TIMETAG();
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	628 if (src) {
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	629 remain = CYG_NAND_BYTES_PER_PAGE(dev);
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	630 while (remain) {
2968 368f9c978e57 NAND: Drop poorly-conceived ecc sub-stride support Ross Younger <wry@ecoscentric.com> parents: 2966 diff changeset	631 CYG_ASSERTC(remain >= write_data_stride);
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	632 TIMETAG();
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	633 if (do_hw_ecc && dev->ecc->init) dev->ecc->init(dev);
2968 368f9c978e57 NAND: Drop poorly-conceived ecc sub-stride support Ross Younger <wry@ecoscentric.com> parents: 2966 diff changeset	634 EG(dev->fns->write_stride(dev, src, write_data_stride));
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	635 TIMETAG();
2966 c6ce6b63dcb5 NAND: app interface change: read_page does only whole page, read_part_page does part pages Ross Younger <wry@ecoscentric.com> parents: 2953 diff changeset	636 if (do_hw_ecc) {
2968 368f9c978e57 NAND: Drop poorly-conceived ecc sub-stride support Ross Younger <wry@ecoscentric.com> parents: 2966 diff changeset	637 dev->ecc->calc(dev, 0, ecc_dest);
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	638 ecc_dest += ecc_stride;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	639 }
2968 368f9c978e57 NAND: Drop poorly-conceived ecc sub-stride support Ross Younger <wry@ecoscentric.com> parents: 2966 diff changeset	640 src += write_data_stride;
368f9c978e57 NAND: Drop poorly-conceived ecc sub-stride support Ross Younger <wry@ecoscentric.com> parents: 2966 diff changeset	641 remain -= write_data_stride;
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	642 }
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	643 }
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	644 TIMETAG();
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	645
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	646 nand_oob_pack(dev, spare, spare_size, ecc, oob_packed);
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	647 NAND_CHATTER(8,dev,"Write page %u\n", page);
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	648 EG(dev->fns->write_finish(dev, oob_packed, dev->spare_per_page));
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	649 TIMETAG();
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	650
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	651 /* N.B. We don't read-back to verify; drivers may do so themselves if
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	652 * they wish. Typically the spec sheet says that a read-back test
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	653 * is unnecessary if the device reports a successful program, and
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	654 * if ECC is being used. */
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	655
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	656 err_exit:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	657 return rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	658 #endif
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	659 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	660
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	661 __externC
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	662 int cyg_nandp_erase_block(cyg_nand_partition *prt, cyg_nand_block_addr pblk)
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	663 {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	664 #ifdef CYGSEM_IO_NAND_READONLY
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	665 return -EROFS;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	666 #else
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	667 PARTITION_CHECK(prt);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	668 cyg_nand_device *dev = prt->dev;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	669 int rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	670 DEV_INIT_CHECK(dev);
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	671 cyg_nand_block_addr blk = BLOCK_P_TO_D(prt, pblk);
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	672
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	673 TIMETAG();
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	674 LOCK_DEV(dev);
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	675 TIMETAG();
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	676
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	677 EG(valid_block_addr(prt, blk));
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	678 #ifdef CYGSEM_IO_NAND_USE_BBT
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	679 if (cyg_nand_bbti_query(dev, blk) != CYG_NAND_BBT_OK) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	680 NAND_CHATTER(1,dev,"Asked to erase bad block %u\n", blk);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	681 EG(-EINVAL);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	682 }
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	683 #endif
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	684 NAND_CHATTER(8,dev,"Erasing block %u\n", blk);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	685 rv = dev->fns->erase_block(dev, blk);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	686 if (rv==-EIO) {
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	687 #ifdef CYGSEM_IO_NAND_USE_BBT
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	688 cyg_nand_bbti_markbad(dev, blk); // deliberate ignore
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	689 #endif
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	690 EG(rv);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	691 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	692 err_exit:
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	693 TIMETAG();
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	694 UNLOCK_DEV(dev);
2976 758f9d488949 NAND: Add timing instrumentation hooks (disabled by default) Ross Younger <wry@ecoscentric.com> parents: 2975 diff changeset	695 TIMETAG();
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	696 return rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	697 #endif
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	698 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	699
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	700 __externC
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	701 int cyg_nandp_bbt_query(cyg_nand_partition *prt, cyg_nand_block_addr pblk)
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	702 {
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	703 #ifdef CYGSEM_IO_NAND_USE_BBT
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	704 int rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	705 PARTITION_CHECK(prt);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	706 cyg_nand_device *dev = prt->dev;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	707 DEV_INIT_CHECK(dev);
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	708 cyg_nand_block_addr blk = BLOCK_P_TO_D(prt, pblk);
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	709 LOCK_DEV(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	710 EG(valid_block_addr(prt, blk));
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	711 rv = cyg_nand_bbti_query(dev, blk);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	712 err_exit:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	713 UNLOCK_DEV(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	714 return rv;
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	715 #else
f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	716 return -ENOSYS;
f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	717 #endif
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	718 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	719
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	720 __externC
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	721 int cyg_nandp_bbt_markbad(cyg_nand_partition *prt, cyg_nand_block_addr pblk)
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	722 {
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	723 #ifdef CYGSEM_IO_NAND_USE_BBT
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	724 int rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	725 PARTITION_CHECK(prt);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	726 cyg_nand_device *dev = prt->dev;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	727 DEV_INIT_CHECK(dev);
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	728 cyg_nand_block_addr blk = BLOCK_P_TO_D(prt, pblk);
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	729 LOCK_DEV(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	730 EG(valid_block_addr(prt, blk));
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	731 EG(cyg_nand_bbti_markbad(dev, blk));
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	732 err_exit:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	733 UNLOCK_DEV(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	734 return rv;
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	735 #else
f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	736 return -ENOSYS;
f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	737 #endif
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	738 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	739
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	740 __externC
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	741 int cyg_nand_bbt_markbad_pageaddr(cyg_nand_partition *prt, cyg_nand_page_addr ppg)
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	742 {
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	743 #ifdef CYGSEM_IO_NAND_USE_BBT
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	744 int rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	745 PARTITION_CHECK(prt);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	746 cyg_nand_device *dev = prt->dev;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	747 DEV_INIT_CHECK(dev);
2994 3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	748 cyg_nand_block_addr pblk = CYG_NAND_PAGE2BLOCKADDR(dev, ppg);
3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	749 cyg_nand_block_addr blk = BLOCK_P_TO_D(prt, pblk);
3d3b0d53c2e5 NAND: application interface v2: functions take partition-relative addresses. Ross Younger <wry@ecoscentric.com> parents: 2992 diff changeset	750 EG(valid_block_addr(prt, blk));
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	751 LOCK_DEV(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	752 EG(cyg_nand_bbti_markbad(dev, blk));
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	753 err_exit:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	754 UNLOCK_DEV(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	755 return rv;
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	756 #else
f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	757 return -ENOSYS;
f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	758 #endif
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	759 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	760
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	761 /* Computes the ECC for a whole device page.
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	762 * 'page' points to the data; a whole page will necessarily be read.
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	763 * The computed ECC will be stored in 'ecc_o'; CYG_NAND_ECCPERPAGE(dev)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	764 * bytes will be written. */
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	765 void nand_ecci_calc_page(cyg_nand_device dev, const CYG_BYTE page, CYG_BYTE *ecc_o)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	766 {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	767 int i;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	768 const int nblocks = (1<<dev->page_bits) / dev->ecc->data_size;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	769
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	770 CYG_CHECK_DATA_PTRC(page);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	771 CYG_CHECK_DATA_PTRC(ecc_o);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	772
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	773 for (i=0; i<nblocks; i++) {
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	774 if (dev->ecc->init)
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	775 dev->ecc->init(dev);
2968 368f9c978e57 NAND: Drop poorly-conceived ecc sub-stride support Ross Younger <wry@ecoscentric.com> parents: 2966 diff changeset	776 dev->ecc->calc(dev,page,ecc_o);
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	777 page += dev->ecc->data_size;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	778 ecc_o += dev->ecc->ecc_size;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	779 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	780 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	781
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	782 /* Checks and (if necessary) repairs the ECC for (up to) a whole device page.
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	783 * 'page' points to the data; an error at position after @nbytes@ will not
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	784 * be corrected.
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	785 * Broadly the same semantics as for cyg_nand_ecc_t.repair;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	786 * both ECCs are of size CYG_NAND_ECCPERPAGE(dev), and ecc_read may
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	787 * be corrected as well as the data.
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	788 * Returns:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	789 * 0 for no errors
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	790 * 1 if there was at least one corrected data error
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	791 * 2 if there was at least one corrected ECC error
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	792 * 3 if there was at least one corrected error in both data and ECC
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	793 * -1 if there was an uncorrectable error (>1 bit in a single ECC block)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	794 */
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	795 int nand_ecci_repair_page(cyg_nand_device dev, CYG_BYTE page, size_t remain,
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	796 CYG_BYTE ecc_read, const CYG_BYTE ecc_calc)
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	797 {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	798 int i, page_rv=0;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	799 const int nblocks = (1<<dev->page_bits) / dev->ecc->data_size;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	800 CYG_CHECK_DATA_PTRC(page);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	801 CYG_CHECK_DATA_PTRC(ecc_read);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	802 CYG_CHECK_DATA_PTRC(ecc_calc);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	803
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	804 for (i=0; i<nblocks; i++) {
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	805 int stride = dev->ecc->data_size;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	806 if (stride > remain) stride = remain;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	807 int chunk_rv = dev->ecc->repair(dev,page,stride,ecc_read,ecc_calc);
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	808 if (chunk_rv < 0) return chunk_rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	809 page_rv \|= chunk_rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	810 page += dev->ecc->data_size;
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	811 remain -= dev->ecc->data_size;
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	812 ecc_read += dev->ecc->ecc_size;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	813 ecc_calc += dev->ecc->ecc_size;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	814 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	815 return page_rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	816 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	817

Mercurial > nand-ecoscentric

annotate packages/io/nand/current/src/nand.c @ 2994:3d3b0d53c2e5