summaryrefslogtreecommitdiffstats
Commit message (Collapse)AuthorAgeFilesLines
* [MTD] NAND Introduce NAND_NO_READRDY optionThomas Gleixner2006-05-252-77/+92
| | | | | | | | | | | The nand driver has a superflous read ready / command delay in the read functions. This was added to handle chips which have an automatic read forward. Newer chips do not have this functionality anymore. Add this option to avoid the delay / I/O operation. Mark all large page chips with the new option flag. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* [MTD] NAND Initialize controller lock and wq only onceThomas Gleixner2006-05-252-4/+9
| | | | | | | | | The lock simplifying patch did not move the lock and waitqueue initialization into the controller allocation patch. This reinitializes waitqueue and spinlocks also for driver supplied controller stuctures. Move it into the allocation path. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* [JFFS2] Fix and improve debugging output during scan.David Woodhouse2006-05-252-5/+5
| | | | | | | Print wasted_size in scanned eraseblocks, print range correctly for summary dirent and inode entries. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [JFFS2] Add 'jeb' argument to jffs2_prealloc_raw_node_refs()David Woodhouse2006-05-257-14/+16
| | | | | | | Preallocation of refs is shortly going to be a per-eraseblock thing, rather than per-filesystem. Add the required argument to the function. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [JFFS2] Correctly handle wasted space before summary node.David Woodhouse2006-05-251-2/+2
| | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [JFFS2] jffs2_free_all_node_refs() doesn't free them all. Rename it.David Woodhouse2006-05-254-5/+5
| | | | | | ... to jffs2_free_jeb_node_refs() since that's what it does. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [JFFS2] Allocate node_ref for wasted space when skipping to page boundaryDavid Woodhouse2006-05-251-5/+2
| | | | | | | One more place where we were changing the accounting info without actually allocating a ref for the lost space... Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [MTD] NAND fix cmd_ctrl breakageThomas Gleixner2006-05-241-5/+10
| | | | | | The cmd_ctrl rework lacks some state transition flags. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* [MTD] NAND coding style and namespace cleanupThomas Gleixner2006-05-241-534/+520
| | | | | | | Cleanup the functions which are not going to change in the next steps. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* [JFFS2] Revert Artem's Bunkage in debug messages.David Woodhouse2006-05-241-2/+2
| | | | | | | | | | | | Random unthinking 'cleanup' caused debug messages like this: Obsoleting node at 0x0006daf4 of len 0x3a4: <7>Dirtying If messages are continuation of an existing line, they don't need to be prefixed with KERN_DEBUG. THINK. Or you will be replaced by a small shell script. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* Merge branch 'master' of git://git.infradead.org/~gleixner/mtd-nand-2.6.gitDavid Woodhouse2006-05-2432-1515/+666
|\
| * [MTD] NAND LED support cleanupThomas Gleixner2006-05-231-2/+6
| | | | | | | | | | | | | | Move the define out of the middle of the code and add an appropriate comment. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * [MTD] NAND remove write_byte/word function from nand_chipThomas Gleixner2006-05-237-93/+14
| | | | | | | | | | | | | | | | The previous change of the command / hardware control allows to remove the write_byte/word functions completely, as their only user were nand_command and nand_command_lp. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * [MTD] Refactor NAND hwcontrol to cmd_ctrlThomas Gleixner2006-05-2318-543/+430
| | | | | | | | | | | | | | | | | | | | | | | | The hwcontrol function enforced a step by step state machine for any kind of hardware chip access. Let the hardware driver know which control bits are set and inform it about a change of the control lines. Let the hardware driver write out the command and address bytes directly. This gives a peformance advantage for address bus controlled chips and simplifies the quirks in the hardware drivers. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * [MTD] Export nand_write_rawThomas Gleixner2006-05-231-0/+1
| | | | | | | | | | | | | | The previous _ecc removal / cleanup broke (i)nftl module usage. Export the missing symbol. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * [MTD] Mark NAND drivers TOTO and PPChameleon brokenThomas Gleixner2006-05-231-2/+2
| | | | | | | | | | | | Both drivers can not be fixed and compiled due to missing header files. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * [MTD] Remove read/write _ecc variantsThomas Gleixner2006-05-2315-404/+209
| | | | | | | | | | | | | | MTD clients are agnostic of FLASH which needs ECC suppport. Remove the functions and fixup the callers. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * [MTD] Remove readv/readv_eccThomas Gleixner2006-05-234-37/+1
| | | | | | | | | | | | | | These functions were never implemented and added only bloat to partition and concat code. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * [MTD] Remove nand writev supportThomas Gleixner2006-05-236-434/+3
| | | | | | | | | | | | NAND writev(_ecc) support is not longer necessary. Remove it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * [MTD] ECC rework broke diskonchipThomas Gleixner2006-05-231-1/+1
| | | | | | | | | | | | Fix the diskonchip ecc setup. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * [MTD] NAND ECC hwctl function has no return valueThomas Gleixner2006-05-231-1/+1
| | | | | | | | | | | | Fix the broken prototype Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | [JFFS2] Introduce ref_next() macro for finding next physical nodeDavid Woodhouse2006-05-246-30/+31
| | | | | | | | | | | | Another part of the preparation for switching to an array... Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* | [JFFS2] Reduce visibility of raw_node_ref to upper layers of JFFS2 code.David Woodhouse2006-05-2412-349/+204
|/ | | | | | | | | | | | | As the first step towards eliminating the ref->next_phys member and saving memory by using an _array_ of struct jffs2_raw_node_ref per eraseblock, stop the write functions from allocating their own refs; have them just _reserve_ the appropriate number instead. Then jffs2_link_node_ref() can just fill them in. Use a linked list of pre-allocated refs in the superblock, for now. Once we switch to an array, it'll just be a case of extending that array. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* Merge branch 'master' of /home/tglx/work/kernel/git/mtd-2.6/Thomas Gleixner2006-05-2332-415/+357
|\ | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * [JFFS2] Remove flash offset argument from various functions.David Woodhouse2006-05-239-115/+135
| | | | | | | | | | | | | | | | We don't need the upper layers to deal with the physical offset. It's _always_ c->nextblock->offset + c->sector_size - c->nextblock->free_size so we might as well just let the actual write functions deal with that. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * [MTD] Introduce MTD_BIT_WRITEABLEJoern Engel2006-05-226-13/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | o Add a flag MTD_BIT_WRITEABLE for devices that allow single bits to be cleared. o Replace MTD_PROGRAM_REGIONS with a cleared MTD_BIT_WRITEABLE flag for STMicro and Intel Sibley flashes with internal ECC. Those flashes disallow clearing of single bits, unlike regular NOR flashes, so the new flag models their behaviour better. o Remove MTD_ECC. After the STMicro/Sibley merge, this flag is only set and never checked. Signed-off-by: Joern Engel <joern@wh.fh-wedel.de>
| * [MTD] Merge STMicro NOR_ECC code with Intel Sibley codeJoern Engel2006-05-224-56/+6
| | | | | | | | | | | | | | | | | | In 2002, STMicro started producing NOR flashes with internal ECC protection for small blocks (8 or 16 bytes). Support for those flashes was added by me. In 2005, Intel Sibley flashes copied this strategy and Nico added support for those. Merge the code for both. Signed-off-by: Joern Engel <joern@wh.fh-wedel.de>
| * [MTD] Introduce writesizeJoern Engel2006-05-2217-114/+117
| | | | | | | | | | | | | | | | At least two flashes exists that have the concept of a minimum write unit, similar to NAND pages, but no other NAND characteristics. Therefore, rename the minimum write unit to "writesize" for all flashes, including NAND. Signed-off-by: Joern Engel <joern@wh.fh-wedel.de>
| * [MTD] Use single flag to mark writeable devices.Joern Engel2006-05-221-6/+4
| | | | | | | | | | | | | | | | | | Two flags exist to decide whether a device is writeable or not. None of those two flags is checked for independently, so they are clearly redundant, if not an invitation to bugs. This patch removed both of them, replacing them with a single new flag. Signed-off-by: Joern Engel <joern@wh.fh-wedel.de>
| * [JFFS2] Put list of nodes in common part of ic/x_ref/x_datum structureDavid Woodhouse2006-05-222-24/+34
| | | | | | | | | | | | | | | | | | | | We'll be using a proper list of nodes in the jffs2_xattr_datum and jffs2_xattr_ref structures, because the existing code to overwrite them is just broken. Put it in the common part at the front of the structure which is shared with the jffs2_inode_cache, so that the jffs2_link_node_ref() function can do the right thing. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * [JFFS2] Add some preemptive BUG checks for XATTR codeDavid Woodhouse2006-05-222-0/+5
| | | | | | | | | | | | | | | | In a couple of places, we assume that what's at the end of the ->next_in_ino list is a struct jffs2_inode_cache. Let's check for that, since we expect it to change soon. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * [JFFS2] Extend jffs2_link_node_ref() to link into per-inode list too.David Woodhouse2006-05-2210-91/+53
| | | | | | | | | | | | | | | | | | | | | | Let's avoid the potential for forgetting to set ref->next_in_ino, by doing it within jffs2_link_node_ref() instead. This highlights the ugliness of what we're currently doing with xattr_datum and xattr_ref structures -- we should find a nicer way of dealing with that. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* | [MTD] NAND modularize ECCThomas Gleixner2006-05-2316-166/+131
| | | | | | | | | | | | | | | | First step of modularizing ECC support. - Move ECC related functionality into a seperate embedded data structure - Get rid of the hardware dependend constants to simplify new ECC models Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | [MTD] NAND cleanup nand_scanThomas Gleixner2006-05-231-174/+233
| | | | | | | | | | | | | | | | Seperate functionality out of nand_scan so the code is more readable. No functional change. First step of simplifying the nand driver. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | [MTD] NAND consolidate data typesThomas Gleixner2006-05-232-64/+64
| | | | | | | | | | | | | | The NAND driver used a mix of unsigned char, u_char amd uint8_t data types. Consolidate to uint8_t usage Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | [MTD] NAND whitespace and formatting cleanupThomas Gleixner2006-05-232-111/+96
| | | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | [JFFS2] Simplify writebuffer handlingThomas Gleixner2006-05-231-170/+102
| | | | | | | | | | | | | | | | | | | | The writev based write buffer implementation was far to complex as in most use cases the write buffer had to be handled anyway. Simplify the write buffer handling and use mtd->write instead. From extensive testing no performance impact has been noted. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | [MTD] Add support for NDFC NAND controllerThomas Gleixner2006-05-234-0/+390
| | | | | | | | | | | | | | NDFC NAND Flash controller is embedded in PPC EP44x SoCs. Add platform driver based support. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | [MTD] Add platform support for NANDThomas Gleixner2006-05-231-0/+47
| | | | | | | | | | | | | | Add the data structures necessary to provide platform device support for NAND Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | [MTD] Simplify NAND lockingThomas Gleixner2006-05-232-41/+47
| | | | | | | | | | | | | | | | Replace the chip lock by a the controller lock. For simple drivers a dummy controller structure is created by the scan code. This simplifies the locking algorithm in nand_get/release_chip(). Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | [MTD] Improve software ECC calculationThomas Gleixner2006-05-232-134/+96
|/ | | | | | | | | Unrolling the loops produces denser and much faster code. Add a config switch which allows to select the byte order of the resulting ecc code. The current Linux implementation has a byte swap versus the SmartMedia specification Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* [JFFS2] Initialise ref->next_in_ino when marking dirty space in wbuf flushDavid Woodhouse2006-05-221-0/+1
| | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [JFFS2] Fix accounting error in jffs2_link_node_ref()David Woodhouse2006-05-221-1/+1
| | | | | | | | When filing REF_OBSOLETE nodes, we'd add their size to the global 'dirty_size' count, but then to the eraseblock's 'used_size' count. That's not clever. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [JFFS2] Fix dummy jffs2_sum_scan_sumnode() macro for !SUMMARY case.David Woodhouse2006-05-221-1/+1
| | | | | | I added an argument to the real function... Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* Merge git://git.infradead.org/jffs2-devel-2.6David Woodhouse2006-05-2132-361/+3306
|\
| * [JFFS2] Finally eliminate __totlen field from struct jffs2_raw_node_refDavid Woodhouse2006-05-213-58/+121
| | | | | | | | | | | | | | | | | | | | | | Well, almost. We'll actually keep a 'TEST_TOTLEN' macro set for now, and keep doing some paranoia checks to make sure it's all working correctly. But if TEST_TOTLEN is unset, the size of struct jffs2_raw_node_ref drops from 16 bytes to 12 on 32-bit machines. That's a saving of about half a megabyte of memory on the OLPC prototype board, with 125K or so nodes in its 512MiB of flash. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * [JFFS2] Locking issues in summary write code.David Woodhouse2006-05-211-4/+17
| | | | | | | | | | | | | | | | | | We can't use jffs2_scan_dirty_space() because it doesn't do any locking; it's only for use at scan time -- hence the 'scan' in the name. Also, don't allocate refs while we have c->erase_completion_lock held. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * [JFFS2] Remove stray kfree of summary info in XATTR code.David Woodhouse2006-05-211-10/+11
| | | | | | | | | | | | | | We don't allocate this locally any more -- it's given to us and owner by our caller. Also improve the debug messages a little. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * [JFFS2] File node reference for wasted space when flushing wbufDavid Woodhouse2006-05-211-9/+20
| | | | | | | | | | | | | | Next step in ongoing campaign to file a struct jffs2_raw_node_ref for every piece of dirty space in the system, so that __totlen can be killed off.... Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * [JFFS2] Add length argument to jffs2_add_physical_node_ref()David Woodhouse2006-05-216-29/+15
| | | | | | | | | | | | | | | | If __totlen is going away, we need to pass the length in separately. Also stop callers from needlessly setting ref->next_phys to NULL, since that's done for them... and since that'll also be going away soon. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
generated by cgit (git 2.34.1) at 2025-01-25 23:10:39 +0000