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

annotate packages/io/nand/current/src/nand.c @ 2953:b8b477f45f0c

NAND: cosmetic messages fix

author	Ross Younger <wry@ecoscentric.com>
date	Thu, 29 Oct 2009 13:21:23 +0000
parents	b72667909323
children	c6ce6b63dcb5

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 /* ============================================================ */
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	61
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	62 /* 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	63 * writes to device->isInited.
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	64 *
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	65 * 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	66 * the structure, and the hardware itself.
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	67 *
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	68 * Rules:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	69 * 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	70 * (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	71 * initialisation is complete);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	72 * 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	73 * 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	74 * 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	75 * 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	76 * 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	77 * 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	78 * (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	79 * 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	80 * 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	81 *
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	82 * 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	83 * 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	84 * 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	85 */
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	86
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	87 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	88
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	89 #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	90 #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	91
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	92 /* Per-device lock.
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	93 * 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	94 * 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	95 * platform level. */
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	96 #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	97 #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	98
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	99 /* ============================================================ */
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	100 /* Initialisation and lookup */
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	101
2949 b72667909323 NAND: add CYGBLD_IO_NAND_BUILD_UTILS; tidy bbt code Ross Younger <wry@ecoscentric.com> parents: 2948 diff changeset	102 __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	103 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	104
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	105 // 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	106 // never need to call this themselves.
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	107 __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	108 {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	109 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	110 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	111 cyg_nand_bbt_initx();
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	112 nand_default_pf = pf;
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
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	115 __externC
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	116 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	117 {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	118 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	119 return NULL;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	120 LOCK_DEV(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	121 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	122 UNLOCK_DEV(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	123 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	124 return rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	125 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	126
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	127 __externC
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	128 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	129 {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	130 int rv = -ENOENT;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	131 if (dev_o) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	132 CYG_CHECK_DATA_PTRC(dev_o);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	133 *dev_o = 0;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	134 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	135 if (!devname) return -EINVAL;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	136
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	137 LOCK_devinit(); // ++++++++++++++++++++++++++++++++++++++++++++
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	138 cyg_nand_device *dev;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	139 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	140 if (0==strcmp(devname, dev->devname)) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	141 rv = 0;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	142 break;
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 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	145 if (!rv) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	146 if (!dev->is_inited) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	147 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	148
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	149 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	150 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	151 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	152 }
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	153 CYG_CHECK_DATA_PTRC(dev->fns);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	154 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	155
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	156 dev->pf = nand_default_pf;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	157 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	158 dev->partition[i].dev = 0;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	159 dev->bbt.data = 0; // Paranoia, ensure devinit sets up
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	160
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	161 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	162
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	163 if (rv) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	164 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	165 goto done;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	166 }
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	167
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	168 // 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	169 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	170 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	171 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	172 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	173 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	174 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	175
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	176 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	177 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	178
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	179 CYG_CHECK_DATA_PTRC(dev->bbt.data);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	180 CYG_CHECK_DATA_PTRC(dev->ecc);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	181 CYG_CHECK_DATA_PTRC(dev->oob);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	182 if (!dev->chipsize_log \|\|
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	183 !dev->blockcount_bits \|\|
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	184 !dev->block_page_bits \|\|
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	185 !dev->spare_per_page \|\|
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	186 !dev->page_bits \|\|
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	187 !dev->bbt.data \|\|
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	188 !dev->ecc \|\|
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	189 !dev->oob) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	190 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	191 rv = -ENOSYS;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	192 goto done;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	193 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	194
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	195 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	196 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	197 rv = -ENOSYS;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	198 goto done;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	199 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	200
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	201 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	202 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	203 rv = -ENOSYS;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	204 goto done;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	205 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	206
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	207 // 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	208
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	209 #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	210 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	211 if (rv == -ENOENT) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	212 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	213 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	214 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	215 if (rv != 0) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	216 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	217 goto done;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	218 }
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	219 #endif
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	220
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	221 cyg_drv_mutex_init(&dev->devlock);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	222 dev->is_inited = 1;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	223
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	224 int live_partitions = 0;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	225 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	226 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	227 if (live_partitions)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	228 NAND_CHATTER(1,dev, "%s devinit complete, %u partitions configured\n", devname, live_partitions);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	229 else
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	230 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	231 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	232 if (dev_o) *dev_o = dev;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	233 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	234 done:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	235 UNLOCK_devinit(); // ------------------------------------------
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	236 return rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	237 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	238
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	239 /* ============================================================ */
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	240 /* Device access */
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	241
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	242 #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	243 #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	244
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	245 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	246 {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	247 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	248 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	249
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	250 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	251 {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	252 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	253 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	254 if (rv != 0)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	255 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	256 return rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	257 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	258
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	259 #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	260
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	261 __externC
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	262 int cyg_nand_read_page(cyg_nand_partition *prt, cyg_nand_page_addr page,
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	263 void * dest, size_t size, void * spare, size_t spare_size)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	264 {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	265 int rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	266 PARTITION_CHECK(prt);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	267 cyg_nand_device *dev = prt->dev;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	268 DEV_INIT_CHECK(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	269
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	270 if (size > (1<<dev->page_bits)) return -EFBIG;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	271 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	272
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	273 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	274
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	275 #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	276 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	277 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	278 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	279 EG(-EINVAL);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	280 }
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	281 #endif
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	282
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	283 EG(nandi_read_page_raw(dev, page, dest, size, spare, spare_size));
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	284
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	285 err_exit:
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	286 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	287 }
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	288
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	289
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	290 /* Internal, mostly-unchecked interface to read a page. */
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	291 int nandi_read_page_raw(cyg_nand_device *dev, cyg_nand_page_addr page,
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	292 CYG_BYTE * dest, const size_t sizex, CYG_BYTE * spare, size_t spare_size)
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	293 {
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	294 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	295 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	296 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	297
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	298 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	299 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	300 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	301 const int ecc_is_hw = (dev->ecc->flags & NAND_ECC_FLAG_IS_HARDWARE);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	302
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	303 // Stride for reading from device:
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	304 const unsigned read_data_stride = ecc_is_hw ? dev->ecc->data_size : NAND_BYTES_PER_PAGE(dev);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	305 // 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	306 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	307 // 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	308 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	309
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	310 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	311 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	312
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	313 if (!ecc_is_hw) {
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	314 // if s/w ecc, part-stride reads are not yet supported
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	315 if (sizex % ecc_data_stride != 0)
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	316 EG(-ENOSYS);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	317 }
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	318
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	319 LOCK_DEV(dev);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	320
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	321 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	322 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	323 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	324
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	325 ++tries;
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	326 remain = sizex;
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	327
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	328 EG(dev->fns->read_begin(dev, page));
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	329
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	330 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	331 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	332 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	333 step = read_data_stride;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	334
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	335 if (ecc_is_hw && dev->ecc->init) dev->ecc->init(dev);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	336
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	337 if (step > remain) {
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	338 step = remain;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	339 EG(dev->fns->read_stride(dev, data_dest, step));
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	340 EG(dev->fns->read_stride(dev, 0, read_data_stride - step));
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	341 } else {
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(dev->fns->read_stride(dev, data_dest, step));
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	343 }
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	344 if (ecc_is_hw) {
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	345 dev->ecc->calc(dev, 0, 0, ecc_dest);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	346 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	347 }
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	348 data_dest += step;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	349 remain -= step;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	350 }
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	351 }
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	352
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	353 EG(dev->fns->read_finish(dev, oob_buf, dev->spare_per_page));
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	354
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	355 nand_oob_unpack(dev, spare, spare_size, ecc_read, oob_buf);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	356
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	357 if (dest && !ecc_is_hw) {
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	358 // Calculate software ECC in one go to try and take advantage
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	359 // of the instruction cache.
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	360 int step = ecc_data_stride;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	361 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	362 remain = sizex;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	363 ecc_calc_p = 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	364
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	365 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	366 // We have already checked above that we're not doing any part-strides.
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	367 if (dev->ecc->init) dev->ecc->init(dev);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	368 dev->ecc->calc(dev, data_dest, step, ecc_calc_p);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	369
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	370 remain -= step;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	371 data_dest += step;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	372 ecc_calc_p += 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	373 }
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	374 }
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	375
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	376 rv = 0;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	377 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	378 int step = ecc_data_stride;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	379 int step_rv;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	380 remain = sizex;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	381 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	382
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	383 ecc_calc_p = 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	384 ecc_read_p = ecc_read;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	385
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	386 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	387 if (step > remain) step = remain;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	388
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	389 step_rv = dev->ecc->repair(dev,data_dest,step,ecc_read_p,ecc_calc_p);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	390 if (step_rv == -1) {
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	391 rv = -1;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	392 break;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	393 }
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	394 rv \|= step_rv;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	395
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	396 data_dest += step;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	397 ecc_read_p += 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	398 ecc_calc_p += 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	399 remain -= step;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	400 }
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	401 }
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	402
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	403 if (rv==-1 && (tries < CYGNUM_NAND_MAX_READ_RETRIES) ) {
2953 b8b477f45f0c NAND: cosmetic messages fix Ross Younger <wry@ecoscentric.com> parents: 2949 diff changeset	404 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	405 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	406 } 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	407
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	408 switch (rv) {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	409 case 0:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	410 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	411 break;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	412 case 1:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	413 case 2:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	414 case 3:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	415 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	416 rv=0;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	417 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	418 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	419 default:
2953 b8b477f45f0c NAND: cosmetic messages fix Ross Younger <wry@ecoscentric.com> parents: 2949 diff changeset	420 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	421 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	422 break;
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	423 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	424 err_exit:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	425 UNLOCK_DEV(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	426 return rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	427 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	428
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	429 /* Internal, mostly-unchecked interface to write a page. */
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	430 __externC
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	431 int cyg_nand_write_page(cyg_nand_partition *prt, cyg_nand_page_addr page,
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	432 const void * src, size_t size, const void * spare, size_t spare_size)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	433 {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	434 int rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	435 PARTITION_CHECK(prt);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	436 cyg_nand_device *dev = prt->dev;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	437 DEV_INIT_CHECK(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	438
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	439 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	440
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	441 #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	442 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	443 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	444 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	445 EG(-EINVAL);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	446 }
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	447 #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	448 EG(nandi_write_page_raw(dev, page, src, size, spare, spare_size));
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	449
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	450 err_exit:
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	451 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	452 }
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	453
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	454 __externC
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	455 int nandi_write_page_raw(cyg_nand_device *dev, cyg_nand_page_addr page,
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	456 const CYG_BYTE * src, const size_t sizex, const CYG_BYTE * spare, size_t spare_size)
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	457 {
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	458 #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	459 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	460 #else
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	461 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	462 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	463 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	464
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	465 const int ecc_is_hw = (dev->ecc->flags & NAND_ECC_FLAG_IS_HARDWARE);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	466 const unsigned write_data_stride = ecc_is_hw ? dev->ecc->data_size : NAND_BYTES_PER_PAGE(dev);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	467 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	468 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	469 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	470 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	471
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	472 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	473
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	474 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	475 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	476
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	477 // If we're doing software ECC, do it all in one go now.
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	478 if (src && !ecc_is_hw) {
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	479 int step = ecc_data_stride;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	480 const CYG_BYTE *data_src = src;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	481 remain = sizex;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	482
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	483 // if s/w ecc, part-stride writes are not yet supported
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	484 if (remain % ecc_data_stride != 0)
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	485 EG(-ENOSYS);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	486
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	487 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	488 //if (step > remain) step = remain; // NYI
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	489 if (dev->ecc->init) dev->ecc->init(dev);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	490 dev->ecc->calc(dev, data_src, step, ecc_dest);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	491
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	492 remain -= step;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	493 data_src += step;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	494 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	495 }
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	496 }
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	497
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	498 LOCK_DEV(dev);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	499 EG(dev->fns->write_begin(dev, page));
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	500 if (src) {
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	501 int step = write_data_stride;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	502 remain = sizex;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	503 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	504 if (ecc_is_hw && dev->ecc->init) dev->ecc->init(dev);
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	505
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	506 if (step > remain) {
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	507 step = remain;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	508 // We can only support part-stride writes by assuming
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	509 // that the rest of the stride is 0xFF.
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	510 // (Woe betide the caller if it isn't.)
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	511 EG(dev->fns->write_stride(dev, src, step));
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	512 EG(dev->fns->write_stride(dev, 0, write_data_stride - step));
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	513 } else {
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	514 EG(dev->fns->write_stride(dev, src, step));
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	515 }
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	516 if (ecc_is_hw) {
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	517 dev->ecc->calc(dev, 0, 0, ecc_dest);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	518 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	519 }
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	520 src += step;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	521 remain -= step;
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	522 }
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	523 }
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	524
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	525 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	526 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	527 EG(dev->fns->write_finish(dev, 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	528
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	529 /* 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	530 * 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	531 * 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	532 * if ECC is being used. */
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	533
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	534 err_exit:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	535 UNLOCK_DEV(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	536 return rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	537 #endif
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	538 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	539
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	540 __externC
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	541 int cyg_nand_erase_block(cyg_nand_partition *prt, cyg_nand_block_addr blk)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	542 {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	543 #ifdef CYGSEM_IO_NAND_READONLY
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	544 return -EROFS;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	545 #else
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	546 PARTITION_CHECK(prt);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	547 cyg_nand_device *dev = prt->dev;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	548 int rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	549 DEV_INIT_CHECK(dev);
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 LOCK_DEV(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	552
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	553 EG(valid_block_addr(prt, blk));
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	554 #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	555 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	556 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	557 EG(-EINVAL);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	558 }
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	559 #endif
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	560 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	561 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	562 if (rv==-EIO) {
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	563 #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	564 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	565 #endif
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	566 EG(rv);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	567 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	568 err_exit:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	569 UNLOCK_DEV(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	570 return rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	571 #endif
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	572 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	573
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	574 __externC
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	575 int cyg_nand_bbt_query(cyg_nand_partition *prt, cyg_nand_block_addr blk)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	576 {
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	577 #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	578 int rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	579 PARTITION_CHECK(prt);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	580 cyg_nand_device *dev = prt->dev;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	581 DEV_INIT_CHECK(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	582 LOCK_DEV(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	583 EG(valid_block_addr(prt, blk));
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	584 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	585 err_exit:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	586 UNLOCK_DEV(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	587 return rv;
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	588 #else
f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	589 return -ENOSYS;
f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	590 #endif
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	591 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	592
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	593 __externC
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	594 int cyg_nand_bbt_markbad(cyg_nand_partition *prt, cyg_nand_block_addr blk)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	595 {
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	596 #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	597 int rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	598 PARTITION_CHECK(prt);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	599 cyg_nand_device *dev = prt->dev;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	600 DEV_INIT_CHECK(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	601 LOCK_DEV(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	602 EG(valid_block_addr(prt, blk));
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	603 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	604 err_exit:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	605 UNLOCK_DEV(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	606 return rv;
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	607 #else
f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	608 return -ENOSYS;
f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	609 #endif
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	610 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	611
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	612 __externC
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	613 int cyg_nand_bbt_markbad_pageaddr(cyg_nand_partition *prt, cyg_nand_page_addr pg)
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	614 {
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	615 #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	616 int rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	617 PARTITION_CHECK(prt);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	618 cyg_nand_device *dev = prt->dev;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	619 DEV_INIT_CHECK(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	620 LOCK_DEV(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	621 cyg_nand_block_addr blk = CYG_NAND_PAGE2BLOCKADDR(dev, pg);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	622 EG(valid_block_addr(prt, blk));
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	623 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	624 err_exit:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	625 UNLOCK_DEV(dev);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	626 return rv;
2948 f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	627 #else
f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	628 return -ENOSYS;
f14749d39b9c NAND: implement CYGSEM_IO_NAND_USE_BBT Ross Younger <wry@ecoscentric.com> parents: 2944 diff changeset	629 #endif
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	630 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	631
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	632 /* 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	633 * '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	634 * 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	635 * bytes will be written. */
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	636 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	637 {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	638 int i;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	639 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	640
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	641 CYG_CHECK_DATA_PTRC(page);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	642 CYG_CHECK_DATA_PTRC(ecc_o);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	643
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	644 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	645 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	646 dev->ecc->init(dev);
32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	647 dev->ecc->calc(dev,page,dev->ecc->data_size,ecc_o);
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	648 page += dev->ecc->data_size;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	649 ecc_o += dev->ecc->ecc_size;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	650 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	651 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	652
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	653 /* 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	654 * '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	655 * be corrected.
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	656 * 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	657 * 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	658 * 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	659 * Returns:
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	660 * 0 for no errors
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	661 * 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	662 * 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	663 * 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	664 * -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	665 */
2944 32bcd454bda4 Major update to allow hardware ECC: change driver interface (to "v2" - with CDL marker), expand ECC interface wry parents: 2930 diff changeset	666 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	667 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	668 {
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	669 int i, page_rv=0;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	670 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	671 CYG_CHECK_DATA_PTRC(page);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	672 CYG_CHECK_DATA_PTRC(ecc_read);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	673 CYG_CHECK_DATA_PTRC(ecc_calc);
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	674
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	675 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	676 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	677 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	678 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	679 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	680 page_rv \|= chunk_rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	681 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	682 remain -= dev->ecc->data_size;
2930 6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	683 ecc_read += dev->ecc->ecc_size;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	684 ecc_calc += dev->ecc->ecc_size;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	685 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	686 return page_rv;
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	687 }
6efd22c2e7b1 Import anoncvs-based NAND and device drivers to 20090826 Ross Younger <wry@ecoscentric.com> parents: diff changeset	688

Mercurial > nand-ecoscentric

annotate packages/io/nand/current/src/nand.c @ 2953:b8b477f45f0c