Commit Graph

9008 Commits

Author SHA1 Message Date
Tudor Ambarus
2fe99a8670 mtd: spi-nor: micron-st.c: Replace hardcoded values for addr_nbytes/addr_mode_nbytes
We track in the core the internal address mode of the flash. Stop using
hardcoded values for the number of bytes of address and use
nor->addr_nbytes and nor->params->addr_mode_nbytes instead.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20220728041451.85559-3-tudor.ambarus@microchip.com
2022-10-25 05:11:35 +03:00
Tudor Ambarus
05ebc1ccb8 mtd: spi-nor: spansion: Replace hardcoded values for addr_nbytes/addr_mode_nbytes
We track in the core the internal address mode of the flash. Stop using
hardcoded values for the number of bytes of address and use
nor->addr_nbytes and nor->params->addr_mode_nbytes instead.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Tested-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Link: https://lore.kernel.org/r/20220728041451.85559-2-tudor.ambarus@microchip.com
2022-10-25 05:11:35 +03:00
Takahiro Kuwano
aff1fa414a mtd: spi-nor: spansion: Add s28hl512t, s28hl01gt, and s28hs01gt info
Add flash info table entries for s28hl512gt, s28hl01gt, and s28hs01gt.
These devices have the same functionality as s28hs512t.

Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/6350ac204c58b94b30d70c529bf194d953085ac6.1661915569.git.Takahiro.Kuwano@infineon.com
2022-10-25 05:11:35 +03:00
Takahiro Kuwano
0605132270 mtd: spi-nor: spansion: Rename s28hs512t prefix
Change prefix to support all other devices in SEMPER S28 family.

Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Link: https://lore.kernel.org/r/8cf6bc9bffd50e486867c0817de1fa56c5d308ec.1661915569.git.Takahiro.Kuwano@infineon.com
2022-10-25 05:11:35 +03:00
Takahiro Kuwano
db391efe76 mtd: spi-nor: spansion: Remove NO_SFDP_FLAGS from s28hs512t info
Read, Page Program, and Sector Erase settings are done in SFDP so we can
remove NO_SFDP_FLAGS from s28hs512t info. Since the default_init() is no
longer called after removing NO_SFDP_FLAGS, the initialization in the
default_init() is moved to late_init().

Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/12e468992f5d0cbd474abff3203100cc8163d4e5.1661915569.git.Takahiro.Kuwano@infineon.com
2022-10-25 05:11:34 +03:00
Takahiro Kuwano
d189614f24 mtd: spi-nor: sfdp: Update params->hwcaps.mask at xSPI profile 1.0 table parse
Existece of xSPI profile 1.0 table implies that the flash supports read
and program in 8D-8D-8D mode. Update the params->hwcaps.mask in
spi_nor_parase_profile1().

Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/1b449bae6978f11f7636f2b5acb6435723963f59.1661915569.git.Takahiro.Kuwano@infineon.com
2022-10-25 05:11:34 +03:00
Sai Krishna Potthuri
8f1ee9ef71 mtd: spi-nor: Add support for flash reset
Add support for spi-nor flash reset via GPIO controller by reading the
reset-gpio property. If there is a valid GPIO specifier then reset will
be performed by asserting and deasserting the GPIO using gpiod APIs
otherwise it will not perform any operation.

Signed-off-by: Sai Krishna Potthuri <sai.krishna.potthuri@amd.com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Link: https://lore.kernel.org/r/20220908064428.2962-3-sai.krishna.potthuri@amd.com
2022-10-25 05:11:34 +03:00
Valentin Korenblit
7c3fc99819 mtd: rawnand: cadence: support 64-bit slave dma interface
32-bit accesses on 64-bit sdma trigger sdma_err in intr_status register.

Check dma capabilities before reading/writing from/to sdma interface.

Link: https://lore.kernel.org/all/b7e5ebb4-0de8-4958-9bc4-fe06ec4c3635@www.fastmail.com/t/

Signed-off-by: Valentin Korenblit <vkorenblit@sequans.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20221018093000.12072-1-vkorenblit@sequans.com
2022-10-18 11:41:30 +02:00
Linus Walleij
05e258c6ec mtd: parsers: bcm47xxpart: Fix halfblock reads
There is some code in the parser that tries to read 0x8000
bytes into a block to "read in the middle" of the block. Well
that only works if the block is also 0x10000 bytes all the time,
else we get these parse errors as we reach the end of the flash:

spi-nor spi0.0: mx25l1606e (2048 Kbytes)
mtd_read error while parsing (offset: 0x200000): -22
mtd_read error while parsing (offset: 0x201000): -22
(...)

Fix the code to do what I think was intended.

Cc: stable@vger.kernel.org
Fixes: f0501e81fb ("mtd: bcm47xxpart: alternative MAGIC for board_data partition")
Cc: Rafał Miłecki <zajec5@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20221018091129.280026-1-linus.walleij@linaro.org
2022-10-18 11:20:12 +02:00
Mikhail Kshevetskiy
6154c7a583 mtd: spinand: winbond: add Winbond W25N02KV flash support
Add support of Winbond W25N02KV flash

Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20221010105110.446674-2-mikhail.kshevetskiy@iopsys.eu
2022-10-18 10:36:10 +02:00
Mikhail Kshevetskiy
dbf70fc204 mtd: spinand: winbond: fix flash identification
Winbond uses 3 bytes to identify flash: vendor_id, dev_id_0, dev_id_1,
but current driver uses only first 2 bytes of it for devices
identification. As result Winbond W25N02KV flash (id_bytes: EF, AA, 22)
is identified as W25N01GV (id_bytes: EF, AA, 21).

Fix this by adding missed identification bytes.

Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20221010105110.446674-1-mikhail.kshevetskiy@iopsys.eu
2022-10-18 10:36:08 +02:00
Christophe Leroy
3fea699cb2 mtd: rawnand: mpc5121: Replace NO_IRQ by 0
NO_IRQ is used to check the return of irq_of_parse_and_map().

On some architecture NO_IRQ is 0, on other architectures it is -1.

irq_of_parse_and_map() returns 0 on error, independent of NO_IRQ.

So use 0 instead of using NO_IRQ.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/4e3ca3e0077ea124ea210c312e6e620f0f9e8bca.1665034065.git.christophe.leroy@csgroup.eu
2022-10-18 10:36:06 +02:00
Dmitry Torokhov
6b923db286 mtd: rawnand: lpc32xx_slc: switch to using gpiod API
This switches the driver from legacy gpio API to a newer gpiod API.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220928230019.2140896-2-dmitry.torokhov@gmail.com
2022-10-18 10:36:05 +02:00
Dmitry Torokhov
782e32a990 mtd: rawnand: lpc32xx_mlc: switch to using gpiod API
This switches the driver from legacy gpio API to a newer gpiod API.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220928230019.2140896-1-dmitry.torokhov@gmail.com
2022-10-18 10:36:03 +02:00
Tony O'Brien
ce107713b7 mtd: rawnand: marvell: Use correct logic for nand-keep-config
Originally the absence of the marvell,nand-keep-config property caused
the setup_data_interface function to be provided. However when
setup_data_interface was moved into nand_controller_ops the logic was
unintentionally inverted. Update the logic so that only if the
marvell,nand-keep-config property is present the bootloader NAND config
kept.

Cc: stable@vger.kernel.org
Fixes: 7a08dbaedd ("mtd: rawnand: Move ->setup_data_interface() to nand_controller_ops")
Signed-off-by: Tony O'Brien <tony.obrien@alliedtelesis.co.nz>
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220927024728.28447-1-chris.packham@alliedtelesis.co.nz
2022-10-18 10:31:00 +02:00
Zhang Qilong
3ada71310d mtd: rawnand: tegra: Fix PM disable depth imbalance in probe
The pm_runtime_enable will increase power disable depth. Thus
a pairing decrement is needed on the error handling path to
keep it balanced according to context.

Cc: stable@vger.kernel.org
Fixes: d7d9f8ec77 ("mtd: rawnand: add NVIDIA Tegra NAND Flash controller driver")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220926084456.98160-1-zhangqilong3@huawei.com
2022-10-18 10:29:39 +02:00
Yang Yingliang
1f3b494d1f mtd: rawnand: intel: Add missing of_node_put() in ebu_nand_probe()
The 'chip_np' returned by of_get_next_child() with refcount decremented,
of_node_put() need be called in error path to decrease the refcount.

Fixes: bfc618fcc3 ("mtd: rawnand: intel: Read the chip-select line from the correct OF node")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220924131010.957117-1-yangyingliang@huawei.com
2022-10-18 10:28:15 +02:00
Zhang Qilong
78e2d5410a mtd: rawnand: gpmi: using pm_runtime_resume_and_get instead of pm_runtime_get_sync
Using the newest pm_runtime_resume_and_get is more appropriate
for simplifing code here.

Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220922150654.117568-1-zhangqilong3@huawei.com
2022-10-18 10:27:06 +02:00
Rafał Miłecki
12b58961de mtd: core: add missing of_node_get() in dynamic partitions code
This fixes unbalanced of_node_put():
[    1.078910] 6 cmdlinepart partitions found on MTD device gpmi-nand
[    1.085116] Creating 6 MTD partitions on "gpmi-nand":
[    1.090181] 0x000000000000-0x000008000000 : "nandboot"
[    1.096952] 0x000008000000-0x000009000000 : "nandfit"
[    1.103547] 0x000009000000-0x00000b000000 : "nandkernel"
[    1.110317] 0x00000b000000-0x00000c000000 : "nanddtb"
[    1.115525] ------------[ cut here ]------------
[    1.120141] refcount_t: addition on 0; use-after-free.
[    1.125328] WARNING: CPU: 0 PID: 1 at lib/refcount.c:25 refcount_warn_saturate+0xdc/0x148
[    1.133528] Modules linked in:
[    1.136589] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.0.0-rc7-next-20220930-04543-g8cf3f7
[    1.146342] Hardware name: Freescale i.MX8DXL DDR3L EVK (DT)
[    1.151999] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[    1.158965] pc : refcount_warn_saturate+0xdc/0x148
[    1.163760] lr : refcount_warn_saturate+0xdc/0x148
[    1.168556] sp : ffff800009ddb080
[    1.171866] x29: ffff800009ddb080 x28: ffff800009ddb35a x27: 0000000000000002
[    1.179015] x26: ffff8000098b06ad x25: ffffffffffffffff x24: ffff0a00ffffff05
[    1.186165] x23: ffff00001fdf6470 x22: ffff800009ddb367 x21: 0000000000000000
[    1.193314] x20: ffff00001fdfebe8 x19: ffff00001fdfec50 x18: ffffffffffffffff
[    1.200464] x17: 0000000000000000 x16: 0000000000000118 x15: 0000000000000004
[    1.207614] x14: 0000000000000fff x13: ffff800009bca248 x12: 0000000000000003
[    1.214764] x11: 00000000ffffefff x10: c0000000ffffefff x9 : 4762cb2ccb52de00
[    1.221914] x8 : 4762cb2ccb52de00 x7 : 205d313431303231 x6 : 312e31202020205b
[    1.229063] x5 : ffff800009d55c1f x4 : 0000000000000001 x3 : 0000000000000000
[    1.236213] x2 : 0000000000000000 x1 : ffff800009954be6 x0 : 000000000000002a
[    1.243365] Call trace:
[    1.245806]  refcount_warn_saturate+0xdc/0x148
[    1.250253]  kobject_get+0x98/0x9c
[    1.253658]  of_node_get+0x20/0x34
[    1.257072]  of_fwnode_get+0x3c/0x54
[    1.260652]  fwnode_get_nth_parent+0xd8/0xf4
[    1.264926]  fwnode_full_name_string+0x3c/0xb4
[    1.269373]  device_node_string+0x498/0x5b4
[    1.273561]  pointer+0x41c/0x5d0
[    1.276793]  vsnprintf+0x4d8/0x694
[    1.280198]  vprintk_store+0x164/0x528
[    1.283951]  vprintk_emit+0x98/0x164
[    1.287530]  vprintk_default+0x44/0x6c
[    1.291284]  vprintk+0xf0/0x134
[    1.294428]  _printk+0x54/0x7c
[    1.297486]  of_node_release+0xe8/0x128
[    1.301326]  kobject_put+0x98/0xfc
[    1.304732]  of_node_put+0x1c/0x28
[    1.308137]  add_mtd_device+0x484/0x6d4
[    1.311977]  add_mtd_partitions+0xf0/0x1d0
[    1.316078]  parse_mtd_partitions+0x45c/0x518
[    1.320439]  mtd_device_parse_register+0xb0/0x274
[    1.325147]  gpmi_nand_probe+0x51c/0x650
[    1.329074]  platform_probe+0xa8/0xd0
[    1.332740]  really_probe+0x130/0x334
[    1.336406]  __driver_probe_device+0xb4/0xe0
[    1.340681]  driver_probe_device+0x3c/0x1f8
[    1.344869]  __driver_attach+0xdc/0x1a4
[    1.348708]  bus_for_each_dev+0x80/0xcc
[    1.352548]  driver_attach+0x24/0x30
[    1.356127]  bus_add_driver+0x108/0x1f4
[    1.359967]  driver_register+0x78/0x114
[    1.363807]  __platform_driver_register+0x24/0x30
[    1.368515]  gpmi_nand_driver_init+0x1c/0x28
[    1.372798]  do_one_initcall+0xbc/0x238
[    1.376638]  do_initcall_level+0x94/0xb4
[    1.380565]  do_initcalls+0x54/0x94
[    1.384058]  do_basic_setup+0x1c/0x28
[    1.387724]  kernel_init_freeable+0x110/0x188
[    1.392084]  kernel_init+0x20/0x1a0
[    1.395578]  ret_from_fork+0x10/0x20
[    1.399157] ---[ end trace 0000000000000000 ]---
[    1.403782] ------------[ cut here ]------------

Reported-by: Han Xu <han.xu@nxp.com>
Fixes: ad9b10d1ea ("mtd: core: introduce of support for dynamic partitions")
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Tested-by: Han Xu <han.xu@nxp.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20221018051822.28685-1-zajec5@gmail.com
2022-10-18 10:16:38 +02:00
Mika Westerberg
69d04ca999 mtd: spi-nor: core: Ignore -ENOTSUPP in spi_nor_init()
The Intel SPI-NOR controller does not support the 4-byte address opcode
so ->set_4byte_addr_mode() ends up returning -ENOTSUPP and the SPI flash
chip probe fail like this:

  [ 12.291082] spi-nor: probe of spi0.0 failed with error -524

Whereas previously before commit 08412e72af ("mtd: spi-nor: core:
Return error code from set_4byte_addr_mode()") it worked just fine.

Fix this by ignoring -ENOTSUPP in spi_nor_init().

Fixes: 08412e72af ("mtd: spi-nor: core: Return error code from set_4byte_addr_mode()")
Cc: stable@vger.kernel.org
Reported-by: Hongyu Ning <hongyu.ning@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Acked-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220923093441.3178-1-mika.westerberg@linux.intel.com
2022-10-18 10:11:35 +02:00
Linus Torvalds
f1947d7c8a Random number generator fixes for Linux 6.1-rc1.
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Merge tag 'random-6.1-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random

Pull more random number generator updates from Jason Donenfeld:
 "This time with some large scale treewide cleanups.

  The intent of this pull is to clean up the way callers fetch random
  integers. The current rules for doing this right are:

   - If you want a secure or an insecure random u64, use get_random_u64()

   - If you want a secure or an insecure random u32, use get_random_u32()

     The old function prandom_u32() has been deprecated for a while
     now and is just a wrapper around get_random_u32(). Same for
     get_random_int().

   - If you want a secure or an insecure random u16, use get_random_u16()

   - If you want a secure or an insecure random u8, use get_random_u8()

   - If you want secure or insecure random bytes, use get_random_bytes().

     The old function prandom_bytes() has been deprecated for a while
     now and has long been a wrapper around get_random_bytes()

   - If you want a non-uniform random u32, u16, or u8 bounded by a
     certain open interval maximum, use prandom_u32_max()

     I say "non-uniform", because it doesn't do any rejection sampling
     or divisions. Hence, it stays within the prandom_*() namespace, not
     the get_random_*() namespace.

     I'm currently investigating a "uniform" function for 6.2. We'll see
     what comes of that.

  By applying these rules uniformly, we get several benefits:

   - By using prandom_u32_max() with an upper-bound that the compiler
     can prove at compile-time is ≤65536 or ≤256, internally
     get_random_u16() or get_random_u8() is used, which wastes fewer
     batched random bytes, and hence has higher throughput.

   - By using prandom_u32_max() instead of %, when the upper-bound is
     not a constant, division is still avoided, because
     prandom_u32_max() uses a faster multiplication-based trick instead.

   - By using get_random_u16() or get_random_u8() in cases where the
     return value is intended to indeed be a u16 or a u8, we waste fewer
     batched random bytes, and hence have higher throughput.

  This series was originally done by hand while I was on an airplane
  without Internet. Later, Kees and I worked on retroactively figuring
  out what could be done with Coccinelle and what had to be done
  manually, and then we split things up based on that.

  So while this touches a lot of files, the actual amount of code that's
  hand fiddled is comfortably small"

* tag 'random-6.1-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random:
  prandom: remove unused functions
  treewide: use get_random_bytes() when possible
  treewide: use get_random_u32() when possible
  treewide: use get_random_{u8,u16}() when possible, part 2
  treewide: use get_random_{u8,u16}() when possible, part 1
  treewide: use prandom_u32_max() when possible, part 2
  treewide: use prandom_u32_max() when possible, part 1
2022-10-16 15:27:07 -07:00
Linus Torvalds
b7cef0d21c This pull request contains updates for UBI and UBIFS
UBI:
 	- Use bitmap API to allocate bitmaps
 	- New attach mode, disable_fm, to attach without fastmap
         - Fixes for various typos in comments
 
 UBIFS:
 	- Fix for a deadlock when setting xattrs for encrypted file
 	- Fix for an assertion failures when truncating encrypted files
         - Fixes for various typos in comments
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Merge tag 'for-linus-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs

Pull UBI and UBIFS updates from Richard Weinberger:
 "UBI:
   - Use bitmap API to allocate bitmaps
   - New attach mode, disable_fm, to attach without fastmap
   - Fixes for various typos in comments

  UBIFS:
   - Fix for a deadlock when setting xattrs for encrypted file
   - Fix for an assertion failures when truncating encrypted files
   - Fixes for various typos in comments"

* tag 'for-linus-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs:
  ubi: fastmap: Add fastmap control support for 'UBI_IOCATT' ioctl
  ubi: fastmap: Use the bitmap API to allocate bitmaps
  ubifs: Fix AA deadlock when setting xattr for encrypted file
  ubifs: Fix UBIFS ro fail due to truncate in the encrypted directory
  mtd: ubi: drop unexpected word 'a' in comments
  ubi: block: Fix typos in comments
  ubi: fastmap: Fix typo in comments
  ubi: Fix repeated words in comments
  ubi: ubi-media.h: Fix comment typo
  ubi: block: Remove in vain semicolon
  ubifs: Fix ubifs_check_dir_empty() kernel-doc comment
2022-10-14 18:23:23 -07:00
Jason A. Donenfeld
197173db99 treewide: use get_random_bytes() when possible
The prandom_bytes() function has been a deprecated inline wrapper around
get_random_bytes() for several releases now, and compiles down to the
exact same code. Replace the deprecated wrapper with a direct call to
the real function. This was done as a basic find and replace.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Yury Norov <yury.norov@gmail.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu> # powerpc
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2022-10-11 17:42:58 -06:00
Jason A. Donenfeld
f743f16c54 treewide: use get_random_{u8,u16}() when possible, part 2
Rather than truncate a 32-bit value to a 16-bit value or an 8-bit value,
simply use the get_random_{u8,u16}() functions, which are faster than
wasting the additional bytes from a 32-bit value. This was done by hand,
identifying all of the places where one of the random integer functions
was used in a non-32-bit context.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Yury Norov <yury.norov@gmail.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Heiko Carstens <hca@linux.ibm.com> # for s390
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2022-10-11 17:42:58 -06:00
Jason A. Donenfeld
81895a65ec treewide: use prandom_u32_max() when possible, part 1
Rather than incurring a division or requesting too many random bytes for
the given range, use the prandom_u32_max() function, which only takes
the minimum required bytes from the RNG and avoids divisions. This was
done mechanically with this coccinelle script:

@basic@
expression E;
type T;
identifier get_random_u32 =~ "get_random_int|prandom_u32|get_random_u32";
typedef u64;
@@
(
- ((T)get_random_u32() % (E))
+ prandom_u32_max(E)
|
- ((T)get_random_u32() & ((E) - 1))
+ prandom_u32_max(E * XXX_MAKE_SURE_E_IS_POW2)
|
- ((u64)(E) * get_random_u32() >> 32)
+ prandom_u32_max(E)
|
- ((T)get_random_u32() & ~PAGE_MASK)
+ prandom_u32_max(PAGE_SIZE)
)

@multi_line@
identifier get_random_u32 =~ "get_random_int|prandom_u32|get_random_u32";
identifier RAND;
expression E;
@@

-       RAND = get_random_u32();
        ... when != RAND
-       RAND %= (E);
+       RAND = prandom_u32_max(E);

// Find a potential literal
@literal_mask@
expression LITERAL;
type T;
identifier get_random_u32 =~ "get_random_int|prandom_u32|get_random_u32";
position p;
@@

        ((T)get_random_u32()@p & (LITERAL))

// Add one to the literal.
@script:python add_one@
literal << literal_mask.LITERAL;
RESULT;
@@

value = None
if literal.startswith('0x'):
        value = int(literal, 16)
elif literal[0] in '123456789':
        value = int(literal, 10)
if value is None:
        print("I don't know how to handle %s" % (literal))
        cocci.include_match(False)
elif value == 2**32 - 1 or value == 2**31 - 1 or value == 2**24 - 1 or value == 2**16 - 1 or value == 2**8 - 1:
        print("Skipping 0x%x for cleanup elsewhere" % (value))
        cocci.include_match(False)
elif value & (value + 1) != 0:
        print("Skipping 0x%x because it's not a power of two minus one" % (value))
        cocci.include_match(False)
elif literal.startswith('0x'):
        coccinelle.RESULT = cocci.make_expr("0x%x" % (value + 1))
else:
        coccinelle.RESULT = cocci.make_expr("%d" % (value + 1))

// Replace the literal mask with the calculated result.
@plus_one@
expression literal_mask.LITERAL;
position literal_mask.p;
expression add_one.RESULT;
identifier FUNC;
@@

-       (FUNC()@p & (LITERAL))
+       prandom_u32_max(RESULT)

@collapse_ret@
type T;
identifier VAR;
expression E;
@@

 {
-       T VAR;
-       VAR = (E);
-       return VAR;
+       return E;
 }

@drop_var@
type T;
identifier VAR;
@@

 {
-       T VAR;
        ... when != VAR
 }

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Yury Norov <yury.norov@gmail.com>
Reviewed-by: KP Singh <kpsingh@kernel.org>
Reviewed-by: Jan Kara <jack@suse.cz> # for ext4 and sbitmap
Reviewed-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com> # for drbd
Acked-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Heiko Carstens <hca@linux.ibm.com> # for s390
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # for mmc
Acked-by: Darrick J. Wong <djwong@kernel.org> # for xfs
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2022-10-11 17:42:55 -06:00
Linus Torvalds
a09476668e Char/Misc and other driver changes for 6.1-rc1
Here is the large set of char/misc and other small driver subsystem
 changes for 6.1-rc1.  Loads of different things in here:
   - IIO driver updates, additions, and changes.  Probably the largest
     part of the diffstat
   - habanalabs driver update with support for new hardware and features,
     the second largest part of the diff.
   - fpga subsystem driver updates and additions
   - mhi subsystem updates
   - Coresight driver updates
   - gnss subsystem updates
   - extcon driver updates
   - icc subsystem updates
   - fsi subsystem updates
   - nvmem subsystem and driver updates
   - misc driver updates
   - speakup driver additions for new features
   - lots of tiny driver updates and cleanups
 
 All of these have been in the linux-next tree for a while with no
 reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc and other driver updates from Greg KH:
 "Here is the large set of char/misc and other small driver subsystem
  changes for 6.1-rc1. Loads of different things in here:

   - IIO driver updates, additions, and changes. Probably the largest
     part of the diffstat

   - habanalabs driver update with support for new hardware and
     features, the second largest part of the diff.

   - fpga subsystem driver updates and additions

   - mhi subsystem updates

   - Coresight driver updates

   - gnss subsystem updates

   - extcon driver updates

   - icc subsystem updates

   - fsi subsystem updates

   - nvmem subsystem and driver updates

   - misc driver updates

   - speakup driver additions for new features

   - lots of tiny driver updates and cleanups

  All of these have been in the linux-next tree for a while with no
  reported issues"

* tag 'char-misc-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (411 commits)
  w1: Split memcpy() of struct cn_msg flexible array
  spmi: pmic-arb: increase SPMI transaction timeout delay
  spmi: pmic-arb: block access for invalid PMIC arbiter v5 SPMI writes
  spmi: pmic-arb: correct duplicate APID to PPID mapping logic
  spmi: pmic-arb: add support to dispatch interrupt based on IRQ status
  spmi: pmic-arb: check apid against limits before calling irq handler
  spmi: pmic-arb: do not ack and clear peripheral interrupts in cleanup_irq
  spmi: pmic-arb: handle spurious interrupt
  spmi: pmic-arb: add a print in cleanup_irq
  drivers: spmi: Directly use ida_alloc()/free()
  MAINTAINERS: add TI ECAP driver info
  counter: ti-ecap-capture: capture driver support for ECAP
  Documentation: ABI: sysfs-bus-counter: add frequency & num_overflows items
  dt-bindings: counter: add ti,am62-ecap-capture.yaml
  counter: Introduce the COUNTER_COMP_ARRAY component type
  counter: Consolidate Counter extension sysfs attribute creation
  counter: Introduce the Count capture component
  counter: 104-quad-8: Add Signal polarity component
  counter: Introduce the Signal polarity component
  counter: interrupt-cnt: Implement watch_validate callback
  ...
2022-10-08 08:56:37 -07:00
Linus Torvalds
1227db9eab Core MTD changes:
* mtdchar: add MEMREAD ioctl
 * Add ECC error accounting for each read request
 * always initialize 'stats' in struct mtd_oob_ops
 * Track maximum number of bitflips for each read request
 * Fix repeated word in comment
 * Move from strlcpy with unused retval to strscpy
 * Fix a typo in a comment
 * Add binding for U-Boot bootloader partitions
 
 MTD device drivers changes:
 * FTL: use container_of() rather than cast
 * docg3:
   - Use correct function names in comment blocks
   - Check the return value of devm_ioremap() in the probe
 * physmap-core: Fix NULL pointer dereferencing in of_select_probe_type()
 * parsers: add Broadcom's U-Boot parser
 
 Raw NAND core changes:
 * Replace of_gpio_named_count() by gpiod_count()
   - Remove misguided comment of nand_get_device()
   - bbt: Use the bitmap API to allocate bitmaps
 
 Raw NAND controller drivers changes:
 * Meson:
   - Stop supporting legacy clocks
   - Refine resource getting in probe
   - Convert bindings to yaml
   - Fix clock handling and update the bindings accordingly
   - Fix bit map use in meson_nfc_ecc_correct()
 * bcm47xx:
   - Fix spelling typo in comment
 * STM32 FMC2:
   - Switch to using devm_fwnode_gpiod_get()
   - Fix dma_map_sg error check
 * Cadence:
   - Remove an unneeded result variable
 * Marvell:
   - Fix error handle regarding dma_map_sg
 * Orion:
   - Use devm_clk_get_optional()
 * Cafe:
   - Use correct function name in comment block
 * Atmel:
   - Unmap streaming DMA mappings
 * Arasan:
   - Stop using 0 as NULL pointer
 * GPMI:
   - Fix typo 'the the' in comment
 * BRCM:
   - Add individual glue driver selection
   - Move Kconfig to driver folder
 * FSL: Fix none ECC mode
 * Intel:
   - Use devm_platform_ioremap_resource_byname()
   - Remove unused clk_rate member from struct ebu_nand
   - Remove unused nand_pa member from ebu_nand_cs
   - Don't re-define NAND_DATA_IFACE_CHECK_ONLY
   - Remove undocumented compatible string
   - Fix compatible string in the bindings
   - Read the chip-select line from the correct OF node
   - Fix maximum chip select value in the bindings
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Merge tag 'mtd/for-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux

Pull MTD updates from Miquel Raynal:
 "Core MTD changes:
   - mtdchar: add MEMREAD ioctl
   - Add ECC error accounting for each read request
   - always initialize 'stats' in struct mtd_oob_ops
   - Track maximum number of bitflips for each read request
   - Fix repeated word in comment
   - Move from strlcpy with unused retval to strscpy
   - Fix a typo in a comment
   - Add binding for U-Boot bootloader partitions

  MTD device drivers changes:
   - FTL: use container_of() rather than cast
   - docg3:
      - Use correct function names in comment blocks
      - Check the return value of devm_ioremap() in the probe
   - physmap-core: Fix NULL pointer dereferencing in
     of_select_probe_type()
   - parsers: add Broadcom's U-Boot parser

  Raw NAND core changes:
   - Replace of_gpio_named_count() by gpiod_count()
   - Remove misguided comment of nand_get_device()
   - bbt: Use the bitmap API to allocate bitmaps

  Raw NAND controller drivers changes:
   - Meson:
      - Stop supporting legacy clocks
      - Refine resource getting in probe
      - Convert bindings to yaml
      - Fix clock handling and update the bindings accordingly
      - Fix bit map use in meson_nfc_ecc_correct()
   - bcm47xx:
      - Fix spelling typo in comment
   - STM32 FMC2:
      - Switch to using devm_fwnode_gpiod_get()
      - Fix dma_map_sg error check
   - Cadence:
      - Remove an unneeded result variable
   - Marvell:
      - Fix error handle regarding dma_map_sg
   - Orion:
      - Use devm_clk_get_optional()
   - Cafe:
      - Use correct function name in comment block
   - Atmel:
      - Unmap streaming DMA mappings
   - Arasan:
      - Stop using 0 as NULL pointer
   - GPMI:
      - Fix typo 'the the' in comment
   - BRCM:
      - Add individual glue driver selection
      - Move Kconfig to driver folder
   - FSL: Fix none ECC mode
   - Intel:
      - Use devm_platform_ioremap_resource_byname()
      - Remove unused clk_rate member from struct ebu_nand
      - Remove unused nand_pa member from ebu_nand_cs
      - Don't re-define NAND_DATA_IFACE_CHECK_ONLY
      - Remove undocumented compatible string
      - Fix compatible string in the bindings
      - Read the chip-select line from the correct OF node
      - Fix maximum chip select value in the bindings"

* tag 'mtd/for-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (43 commits)
  mtd: rawnand: meson: stop supporting legacy clocks
  dt-bindings: nand: meson: convert txt to yaml
  mtd: rawnand: meson: refine resource getting in probe
  mtd: rawnand: meson: fix the clock
  dt-bindings: nand: meson: fix meson nfc clock
  mtd: rawnand: bcm47xx: fix spelling typo in comment
  mtd: rawnand: stm32_fmc2: switch to using devm_fwnode_gpiod_get()
  mtd: rawnand: cadence: Remove an unneeded result variable
  mtd: rawnand: Replace of_gpio_named_count() by gpiod_count()
  mtd: rawnand: marvell: Fix error handle regarding dma_map_sg
  mtd: rawnand: stm32_fmc2: Fix dma_map_sg error check
  mtd: rawnand: remove misguided comment of nand_get_device()
  mtd: rawnand: orion: Use devm_clk_get_optional()
  mtd: rawnand: cafe: Use correct function name in comment block
  mtd: rawnand: atmel: Unmap streaming DMA mappings
  mtd: rawnand: meson: fix bit map use in meson_nfc_ecc_correct()
  mtd: rawnand: arasan: stop using 0 as NULL pointer
  mtd: rawnand: gpmi: Fix typo 'the the' in comment
  mtd: rawnand: brcmnand: Add individual glue driver selection
  mtd: rawnand: brcmnand: Move Kconfig to driver folder
  ...
2022-10-07 11:59:11 -07:00
Miquel Raynal
63c30d7044 Raw NAND core changes:
* Replace of_gpio_named_count() by gpiod_count()
   - Remove misguided comment of nand_get_device()
   - bbt: Use the bitmap API to allocate bitmaps
 
 Raw NAND controller drivers changes:
 * Meson:
   - Stop supporting legacy clocks
   - Refine resource getting in probe
   - Convert bindings to yaml
   - Fix clock handling and update the bindings accordingly
   - Fix bit map use in meson_nfc_ecc_correct()
 * bcm47xx:
   - Fix spelling typo in comment
 * STM32 FMC2:
   - Switch to using devm_fwnode_gpiod_get()
   - Fix dma_map_sg error check
 * Cadence:
   - Remove an unneeded result variable
 * Marvell:
   - Fix error handle regarding dma_map_sg
 * Orion:
   - Use devm_clk_get_optional()
 * Cafe:
   - Use correct function name in comment block
 * Atmel:
   - Unmap streaming DMA mappings
 * Arasan:
   - Stop using 0 as NULL pointer
 * GPMI:
   - Fix typo 'the the' in comment
 * BRCM:
   - Add individual glue driver selection
   - Move Kconfig to driver folder
 * FSL: Fix none ECC mode
 * Intel:
   - Use devm_platform_ioremap_resource_byname()
   - Remove unused clk_rate member from struct ebu_nand
   - Remove unused nand_pa member from ebu_nand_cs
   - Don't re-define NAND_DATA_IFACE_CHECK_ONLY
   - Remove undocumented compatible string
   - Fix compatible string in the bindings
   - Read the chip-select line from the correct OF node
   - Fix maximum chip select value in the bindings
 -----BEGIN PGP SIGNATURE-----
 
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Merge tag 'nand/for-6.1' into mtd/next

Raw NAND core changes:
* Replace of_gpio_named_count() by gpiod_count()
  - Remove misguided comment of nand_get_device()
  - bbt: Use the bitmap API to allocate bitmaps

Raw NAND controller drivers changes:
* Meson:
  - Stop supporting legacy clocks
  - Refine resource getting in probe
  - Convert bindings to yaml
  - Fix clock handling and update the bindings accordingly
  - Fix bit map use in meson_nfc_ecc_correct()
* bcm47xx:
  - Fix spelling typo in comment
* STM32 FMC2:
  - Switch to using devm_fwnode_gpiod_get()
  - Fix dma_map_sg error check
* Cadence:
  - Remove an unneeded result variable
* Marvell:
  - Fix error handle regarding dma_map_sg
* Orion:
  - Use devm_clk_get_optional()
* Cafe:
  - Use correct function name in comment block
* Atmel:
  - Unmap streaming DMA mappings
* Arasan:
  - Stop using 0 as NULL pointer
* GPMI:
  - Fix typo 'the the' in comment
* BRCM:
  - Add individual glue driver selection
  - Move Kconfig to driver folder
* FSL: Fix none ECC mode
* Intel:
  - Use devm_platform_ioremap_resource_byname()
  - Remove unused clk_rate member from struct ebu_nand
  - Remove unused nand_pa member from ebu_nand_cs
  - Don't re-define NAND_DATA_IFACE_CHECK_ONLY
  - Remove undocumented compatible string
  - Fix compatible string in the bindings
  - Read the chip-select line from the correct OF node
  - Fix maximum chip select value in the bindings

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2022-10-07 16:56:14 +02:00
Linus Torvalds
ff6862c23d ARM: driver updates for 6.1
The drivers branch for 6.1 is a bit larger than for most releases.  Most
 of the changes come from SoC maintainers for the drivers/soc subsystem:
 
  - A new driver for error handling on the NVIDIA Tegra
    'control backbone' bus.
 
  - A new driver for Qualcomm LLCC/DDR bandwidth measurement
 
  - New Rockchip rv1126 and rk3588 power domain drivers
 
  - DT binding updates for memory controllers, older Rockchip
    SoCs, various Mediatek devices, Qualcomm SCM firmware
 
  - Minor updates to Hisilicon LPC bus, the Allwinner SRAM
    driver, the Apple rtkit firmware driver, Tegra firmware
 
  - Minor updates for SoC drivers (Samsung, Mediatek, Renesas,
    Tegra, Qualcomm, Broadcom, NXP, ...)
 
 There are also some separate subsystem with downstream maintainers that
 merge updates this way:
 
  - Various updates and new drivers in the memory controller
    subsystem for Mediatek and Broadcom SoCs
 
  - Small set of changes in preparation to add support for FF-A
    v1.1 specification later, in the Arm FF-A firmware subsystem
 
  - debugfs support in the PSCI firmware subsystem
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Merge tag 'arm-drivers-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM driver updates from Arnd Bergmann:
 "The drivers branch for 6.1 is a bit larger than for most releases.

  Most of the changes come from SoC maintainers for the drivers/soc
  subsystem:

   - A new driver for error handling on the NVIDIA Tegra 'control
     backbone' bus.

   - A new driver for Qualcomm LLCC/DDR bandwidth measurement

   - New Rockchip rv1126 and rk3588 power domain drivers

   - DT binding updates for memory controllers, older Rockchip SoCs,
     various Mediatek devices, Qualcomm SCM firmware

   - Minor updates to Hisilicon LPC bus, the Allwinner SRAM driver, the
     Apple rtkit firmware driver, Tegra firmware

   - Minor updates for SoC drivers (Samsung, Mediatek, Renesas, Tegra,
     Qualcomm, Broadcom, NXP, ...)

  There are also some separate subsystem with downstream maintainers
  that merge updates this way:

   - Various updates and new drivers in the memory controller subsystem
     for Mediatek and Broadcom SoCs

   - Small set of changes in preparation to add support for FF-A v1.1
     specification later, in the Arm FF-A firmware subsystem

   - debugfs support in the PSCI firmware subsystem"

* tag 'arm-drivers-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (149 commits)
  ARM: remove check for CONFIG_DEBUG_LL_SER3
  firmware/psci: Add debugfs support to ease debugging
  firmware/psci: Print a warning if PSCI doesn't accept PC mode
  dt-bindings: memory: snps,dw-umctl2-ddrc: Extend schema with IRQs/resets/clocks props
  dt-bindings: memory: snps,dw-umctl2-ddrc: Replace opencoded numbers with macros
  dt-bindings: memory: snps,dw-umctl2-ddrc: Use more descriptive device name
  dt-bindings: memory: synopsys,ddrc-ecc: Detach Zynq DDRC controller support
  soc: sunxi: sram: Add support for the D1 system control
  soc: sunxi: sram: Export the LDO control register
  soc: sunxi: sram: Save a pointer to the OF match data
  soc: sunxi: sram: Return void from the release function
  soc: apple: rtkit: Add apple_rtkit_poll
  soc: imx: add i.MX93 media blk ctrl driver
  soc: imx: add i.MX93 SRC power domain driver
  soc: imx: imx8m-blk-ctrl: Use genpd_xlate_onecell
  soc: imx: imx8mp-blk-ctrl: handle PCIe PHY resets
  soc: imx: imx8m-blk-ctrl: add i.MX8MP VPU blk ctrl
  soc: imx: add i.MX8MP HDMI blk ctrl HDCP/HRV_MWR
  soc: imx: add icc paths for i.MX8MP hsio/hdmi blk ctrl
  soc: imx: add icc paths for i.MX8MP media blk ctrl
  ...
2022-10-06 11:04:57 -07:00
Rafał Miłecki
4a575865c1 mtd: allow getting MTD device associated with a specific DT node
MTD subsystem API allows interacting with MTD devices (e.g. reading,
writing, handling bad blocks). So far a random driver could get MTD
device only by its name (get_mtd_device_nm()). This change allows
getting them also by a DT node.

This API is required for drivers handling DT defined MTD partitions in a
specific way (e.g. U-Boot (sub)partition with environment variables).

Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20220916122100.170016-3-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-09-24 14:54:37 +02:00
Zhihao Cheng
669d204469 ubi: fastmap: Add fastmap control support for 'UBI_IOCATT' ioctl
[1] suggests that fastmap is suitable for large flash devices. Module
parameter 'fm_autoconvert' is a coarse grained switch to enable all
ubi devices to generate fastmap, which may turn on fastmap even for
small flash devices.

This patch imports a new field 'disable_fm' in struct 'ubi_attach_req'
to support following situations by ioctl 'UBI_IOCATT'.
 [old functions]
 A. Disable 'fm_autoconvert': Disbable fastmap for all ubi devices
 B. Enable 'fm_autoconvert': Enable fastmap for all ubi devices
 [new function]
 C. Enable 'fm_autoconvert', set 'disable_fm' for given device: Don't
    create new fastmap and do full scan (existed fastmap will be
    destroyed) for the given ubi device.

A simple test case in [2].

[1] http://www.linux-mtd.infradead.org/doc/ubi.html#L_fastmap
[2] https://bugzilla.kernel.org/show_bug.cgi?id=216278

Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2022-09-21 18:29:18 +02:00
Christophe JAILLET
e7f35da21f ubi: fastmap: Use the bitmap API to allocate bitmaps
Use bitmap_zalloc()/bitmap_free() instead of hand-writing them.

It is less verbose and it improves the semantic.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2022-09-21 11:32:58 +02:00
Jiang Jian
019ac05e4c mtd: ubi: drop unexpected word 'a' in comments
there is an unexpected word 'a' in the comments that need to be dropped

file - drivers/mtd/ubi/vmt.c
line - 626,779

* Returns zero if volume is all right and a a negative error code if not.

changed to:

* Returns zero if volume is all right and a negative error code if not.

Signed-off-by: Jiang Jian <jiangjian@cdjrlc.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2022-09-21 11:32:38 +02:00
Julia Lawall
e079be2c35 ubi: block: Fix typos in comments
Various spelling mistakes in comments.
Detected with the help of Coccinelle.

Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Signed-off-by: Richard Weinberger <richard@nod.at>
2022-09-21 11:32:27 +02:00
Zhang Jiaming
b58b252800 ubi: fastmap: Fix typo in comments
There are a typo(dont't) in comments.
Fix it.

Signed-off-by: Zhang Jiaming <jiaming@nfschina.com>
Reviewed-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2022-09-21 11:32:27 +02:00
Jilin Yuan
ec1f97f501 ubi: Fix repeated words in comments
Delete the redundant word 'a'.
Delete the redundant word 'the'.

Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2022-09-21 11:32:27 +02:00
Jason Wang
818f9e8353 ubi: ubi-media.h: Fix comment typo
The double `the' is duplicated in the comment, remove one.

Signed-off-by: Jason Wang <wangborong@cdjrlc.com>
Reviewed-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2022-09-21 11:12:18 +02:00
Li zeming
6c97bb345f ubi: block: Remove in vain semicolon
Remove the repeated ';' from code, it is not
needed.

Signed-off-by: Li zeming <zeming@nfschina.com>
Reviewed-by: Zhihao Cheng <chengzhihao1@huawei.com>
[rw: Massaged commit message a bit]
Signed-off-by: Richard Weinberger <richard@nod.at>
2022-09-21 11:11:10 +02:00
Liang Yang
ba47a6ac46 mtd: rawnand: meson: stop supporting legacy clocks
meson NFC driver only uses common clock interfaces, which triggers kernel test
robot errors when using legacy clocks with HAVE_LEGACY_CLK on.

Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Liang Yang <liang.yang@amlogic.com>
[miquel.raynal@bootlin.com: Rephrase the commit log]
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220907080405.28240-6-liang.yang@amlogic.com
2022-09-21 10:38:47 +02:00
Liang Yang
5d53c615ab mtd: rawnand: meson: refine resource getting in probe
simply use devm_platform_ioremap_resource_byname() instead of two steps:
res = platform_get_resource(pdev, IORESOURCE_MEM, 0) and
reg_base = devm_ioremap_resource(dev, res)

Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Liang Yang <liang.yang@amlogic.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220907080405.28240-4-liang.yang@amlogic.com
2022-09-21 10:38:47 +02:00
Liang Yang
1e4d3ba668 mtd: rawnand: meson: fix the clock
EMMC and NAND have the same clock control register named 'SD_EMMC_CLOCK'
which is defined in EMMC port internally. bit0~5 of 'SD_EMMC_CLOCK' is
the divider and bit6~7 is the mux for fix pll and xtal. At the beginning,
a common MMC and NAND sub-clock was discussed and planed to be implemented
as NFC clock provider, but now this series of patches of a common MMC and
NAND sub-clock are never being accepted.  the reasons for giving up are:
1. EMMC and NAND, which are mutually exclusive anyway
2. coupling the EMMC and NAND.
3. it seems that a common MMC and NAND sub-clock is over engineered.
and let us see the link fot more information:
https://lore.kernel.org/all/20220121074508.42168-5-liang.yang@amlogic.com
so The meson nfc can't work now, let us rework the clock.

Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Liang Yang <liang.yang@amlogic.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220907080405.28240-3-liang.yang@amlogic.com
2022-09-21 10:38:47 +02:00
Jiangshan Yi
36ac78cea9 mtd: rawnand: bcm47xx: fix spelling typo in comment
Fix spelling typo in comment.

Reported-by: k2ci <kernel-bot@kylinos.cn>
Signed-off-by: Jiangshan Yi <yijiangshan@kylinos.cn>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220905063232.1830197-1-13667453960@163.com
2022-09-21 10:38:47 +02:00
Dmitry Torokhov
a2d0e5c67b mtd: rawnand: stm32_fmc2: switch to using devm_fwnode_gpiod_get()
I would like to stop exporting OF-specific devm_gpiod_get_from_of_node()
so that gpiolib can be cleaned a bit, so let's switch to the generic
fwnode property API.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220903-gpiod_get_from_of_node-remove-v1-3-b29adfb27a6c@gmail.com
2022-09-21 10:38:47 +02:00
ye xingchen
4c5f69aea1 mtd: rawnand: cadence: Remove an unneeded result variable
Return the value cadence_nand_set_access_width16() directly instead of
storing it in another redundant variable.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220901074555.313266-1-ye.xingchen@zte.com.cn
2022-09-21 10:38:47 +02:00
Andy Shevchenko
c26ef845c0 mtd: rawnand: Replace of_gpio_named_count() by gpiod_count()
As a preparation to unexport of_gpio_named_count(), convert the
driver to use gpiod_count() instead.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220830183336.49966-1-andriy.shevchenko@linux.intel.com
2022-09-21 10:38:46 +02:00
Jack Wang
40c9ba0dec mtd: rawnand: marvell: Fix error handle regarding dma_map_sg
dma_map_sg return 0 on error, in case of error return -EIO,
also add the dma_unmap_sg as rollback on the following error.

Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Christophe Kerello <christophe.kerello@foss.st.com>
Cc: Cai Huoqing <cai.huoqing@linux.dev>
Cc: linux-mtd@lists.infradead.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org

Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220819060801.10443-6-jinpu.wang@ionos.com
2022-09-21 10:38:46 +02:00
Jack Wang
43b81c2a3e mtd: rawnand: stm32_fmc2: Fix dma_map_sg error check
dma_map_sg return 0 on error, in case of error return -EIO.

Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Christophe Kerello <christophe.kerello@foss.st.com>
Cc: Cai Huoqing <cai.huoqing@linux.dev>
Cc: linux-mtd@lists.infradead.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Reviewed-by: Christophe Kerello <christophe.kerello@foss.st.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220819060801.10443-5-jinpu.wang@ionos.com
2022-09-21 10:38:46 +02:00
ChenXiaoSong
ddfa68d415 mtd: rawnand: remove misguided comment of nand_get_device()
After commit 8cba323437 ("mtd: rawnand: protect access to rawnand devices
while in suspend"), it will wait while in suspend rather than returning
errors. So remove the misguided comment about return value.

Signed-off-by: ChenXiaoSong <chenxiaosong2@huawei.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220819021846.2924539-1-chenxiaosong2@huawei.com
2022-09-21 10:38:46 +02:00
Christophe JAILLET
2525a0abed mtd: rawnand: orion: Use devm_clk_get_optional()
Use devm_clk_get_optional() instead of hand writing it.

While at it, use dev_err_probe() to further simplify the code. This is also
less verbose if clk_get() returns -EPROBE_DEFER.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/a5bde48e3e1165dd65d1d1c1739e03ace1bef5d3.1659907229.git.christophe.jaillet@wanadoo.fr
2022-09-21 10:38:46 +02:00
Colin Ian King
79db205db5 mtd: rawnand: cafe: Use correct function name in comment block
The incorrect function name is being used in the comment for function
cafe_nand_read_page. Correct it.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220805180117.2375503-1-colin.i.king@gmail.com
2022-09-21 10:38:46 +02:00
Tudor Ambarus
1161703c9b mtd: rawnand: atmel: Unmap streaming DMA mappings
Every dma_map_single() call should have its dma_unmap_single() counterpart,
because the DMA address space is a shared resource and one could render the
machine unusable by consuming all DMA addresses.

Link: https://lore.kernel.org/lkml/13c6c9a2-6db5-c3bf-349b-4c127ad3496a@axentia.se/
Cc: stable@vger.kernel.org
Fixes: f88fc122cc ("mtd: nand: Cleanup/rework the atmel_nand driver")
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Acked-by: Alexander Dahl <ada@thorsis.com>
Reported-by: Peter Rosin <peda@axentia.se>
Tested-by: Alexander Dahl <ada@thorsis.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Tested-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220728074014.145406-1-tudor.ambarus@microchip.com
2022-09-21 10:38:46 +02:00
Dan Carpenter
3e4ad3212c mtd: rawnand: meson: fix bit map use in meson_nfc_ecc_correct()
The meson_nfc_ecc_correct() function accidentally does a right shift
instead of a left shift so it only works for BIT(0).  Also use
BIT_ULL() because "correct_bitmap" is a u64 and we want to avoid
shift wrapping bugs.

Fixes: 8fae856c53 ("mtd: rawnand: meson: add support for Amlogic NAND flash controller")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Liang Yang <liang.yang@amlogic.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/YuI2zF1hP65+LE7r@kili
2022-09-21 10:38:46 +02:00
GONG, Ruiqi
37ea9f165e mtd: rawnand: arasan: stop using 0 as NULL pointer
Fix the following sparse warnings:

drivers/mtd/nand/raw/arasan-nand-controller.c:918:70: warning: Using plain integer as NULL pointer
drivers/mtd/nand/raw/arasan-nand-controller.c:918:73: warning: Using plain integer as NULL pointer

Signed-off-by: GONG, Ruiqi <gongruiqi1@huawei.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220725112108.686347-1-gongruiqi1@huawei.com
2022-09-21 10:38:46 +02:00
Slark Xiao
d16da6d112 mtd: rawnand: gpmi: Fix typo 'the the' in comment
Replace 'the the' with 'the' in the comment.

Signed-off-by: Slark Xiao <slark_xiao@163.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220722072850.72797-1-slark_xiao@163.com
2022-09-21 10:38:46 +02:00
Florian Fainelli
c4c85b512d mtd: rawnand: brcmnand: Add individual glue driver selection
Allow each platform to define a dedicated Kconfig entry for its glue
driver such that we can decide on a per-platfomr basis whether to build
it or not. This allows for a finer grained control over the resulting
kernel image or set of modules.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220711222323.4048197-3-f.fainelli@gmail.com
2022-09-21 10:38:46 +02:00
Florian Fainelli
1dd4fd8716 mtd: rawnand: brcmnand: Move Kconfig to driver folder
In preparation for allowing each of the brcmnand stub to be built
separately, move the Kconfig entry to the driver folder.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220711222323.4048197-2-f.fainelli@gmail.com
2022-09-21 10:38:46 +02:00
Michał Kępień
095bb6e44e mtdchar: add MEMREAD ioctl
User-space applications making use of MTD devices via /dev/mtd*
character devices currently have limited capabilities for reading data:

  - only deprecated methods of accessing OOB layout information exist,

  - there is no way to explicitly specify MTD operation mode to use; it
    is auto-selected based on the MTD file mode (MTD_FILE_MODE_*) set
    for the character device; in particular, this prevents using
    MTD_OPS_AUTO_OOB for reads,

  - all existing user-space interfaces which cause mtd_read() or
    mtd_read_oob() to be called (via mtdchar_read() and
    mtdchar_read_oob(), respectively) return success even when those
    functions return -EUCLEAN or -EBADMSG; this renders user-space
    applications using these interfaces unaware of any corrected
    bitflips or uncorrectable ECC errors detected during reads.

Note that the existing MEMWRITE ioctl allows the MTD operation mode to
be explicitly set, allowing user-space applications to write page data
and OOB data without requiring them to know anything about the OOB
layout of the MTD device they are writing to (MTD_OPS_AUTO_OOB).  Also,
the MEMWRITE ioctl does not mangle the return value of mtd_write_oob().

Add a new ioctl, MEMREAD, which addresses the above issues.  It is
intended to be a read-side counterpart of the existing MEMWRITE ioctl.
Similarly to the latter, the read operation is performed in a loop which
processes at most mtd->erasesize bytes in each iteration.  This is done
to prevent unbounded memory allocations caused by calling kmalloc() with
the 'size' argument taken directly from the struct mtd_read_req provided
by user space.  However, the new ioctl is implemented so that the values
it returns match those that would have been returned if just a single
mtd_read_oob() call was issued to handle the entire read operation in
one go.

Note that while just returning -EUCLEAN or -EBADMSG to user space would
already be a valid and useful indication of the ECC algorithm detecting
errors during a read operation, that signal would not be granular enough
to cover all use cases.  For example, knowing the maximum number of
bitflips detected in a single ECC step during a read operation performed
on a given page may be useful when dealing with an MTD partition whose
ECC layout varies across pages (e.g. a partition consisting of a
bootloader area using a "custom" ECC layout followed by data pages using
a "standard" ECC layout).  To address that, include ECC statistics in
the structure returned to user space by the new MEMREAD ioctl.

Link: https://www.infradead.org/pipermail/linux-mtd/2016-April/067085.html

Suggested-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Acked-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220629125737.14418-5-kernel@kempniu.pl
2022-09-21 10:38:11 +02:00
Michał Kępień
7bea605692 mtd: add ECC error accounting for each read request
Extend struct mtd_req_stats with two new fields holding the number of
corrected bitflips and uncorrectable errors detected during a read
operation.  This is a prerequisite for ultimately passing those counters
to user space, where they can be useful to applications for making
better-informed choices about moving data around.

Unlike 'max_bitflips' (which is set - in a common code path - to the
return value of a function called while the MTD device's mutex is held),
these counters have to be maintained in each MTD driver which defines
the '_read_oob' callback because the statistics need to be calculated
while the MTD device's mutex is held.

Suggested-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220629125737.14418-4-kernel@kempniu.pl
2022-09-21 10:38:09 +02:00
Michał Kępień
745df17906 mtd: always initialize 'stats' in struct mtd_oob_ops
As the 'stats' field in struct mtd_oob_ops is used in conditional
expressions, ensure it is always zero-initialized in all such structures
to prevent random stack garbage from being interpreted as a pointer.

Strictly speaking, this problem currently only needs to be fixed for
struct mtd_oob_ops structures subsequently passed to mtd_read_oob().
However, this commit goes a step further and makes all instances of
struct mtd_oob_ops in the tree zero-initialized, in hope of preventing
future problems, e.g. if struct mtd_req_stats gets extended with write
statistics at some point.

Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220629125737.14418-3-kernel@kempniu.pl
2022-09-21 10:38:07 +02:00
Michał Kępień
65394169bd mtd: track maximum number of bitflips for each read request
mtd_read_oob() callers are currently oblivious to the details of ECC
errors detected during the read operation - they only learn (through the
return value) whether any corrected bitflips or uncorrectable errors
occurred.  More detailed ECC information can be useful to user-space
applications for making better-informed choices about moving data
around.

Extend struct mtd_oob_ops with a pointer to a newly-introduced struct
mtd_req_stats and set its 'max_bitflips' field to the maximum number of
bitflips found in a single ECC step during the read operation performed
by mtd_read_oob().  This is a prerequisite for ultimately passing that
value back to user space.

Suggested-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220629125737.14418-2-kernel@kempniu.pl
2022-09-21 10:38:05 +02:00
wangjianli
9ee6718230 mtd: fix repeated word in comment
Delete the redundant word 'in'.

Signed-off-by: wangjianli <wangjianli@cdjrlc.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220908122229.10814-1-wangjianli@cdjrlc.com
2022-09-20 10:40:30 +02:00
Pali Rohár
049e43b9fd mtd: rawnand: fsl_elbc: Fix none ECC mode
Commit f6424c22aa ("mtd: rawnand: fsl_elbc: Make SW ECC work") added
support for specifying ECC mode via DTS and skipping autodetection.

But it broke explicit specification of HW ECC mode in DTS as correct
settings for HW ECC mode are applied only when NONE mode or nothing was
specified in DTS file.

Also it started aliasing NONE mode to be same as when ECC mode was not
specified and disallowed usage of ON_DIE mode.

Fix all these issues. Use autodetection of ECC mode only in case when mode
was really not specified in DTS file by checking that ecc value is invalid.
Set HW ECC settings either when HW ECC was specified in DTS or it was
autodetected. And do not fail when ON_DIE mode is set.

Fixes: f6424c22aa ("mtd: rawnand: fsl_elbc: Make SW ECC work")
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Marek Behún <kabel@kernel.org>
Reviewed-by: Marek Behún <kabel@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220707184328.3845-1-pali@kernel.org
2022-09-20 10:06:59 +02:00
Christophe JAILLET
054c6b58fc mtd: nand: bbt: Use the bitmap API to allocate bitmaps
Use bitmap_zalloc()/bitmap_free() instead of hand-writing them.

It is less verbose and it improves the semantic.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/b18c2b6711b8930f0dfb8318b5d19ef6e41f0f9a.1656864573.git.christophe.jaillet@wanadoo.fr
2022-09-20 10:06:58 +02:00
Martin Blumenstingl
7471a53ddc mtd: rawnand: intel: Use devm_platform_ioremap_resource_byname()
Switch from open-coded platform_get_resource_byname() and
devm_ioremap_resource() to devm_platform_ioremap_resource_byname() where
possible to simplify the code.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220702231227.1579176-9-martin.blumenstingl@googlemail.com
2022-09-20 10:06:56 +02:00
Martin Blumenstingl
1b9bdc213c mtd: rawnand: intel: Remove unused clk_rate member from struct ebu_nand
The clk_rate member from struct ebu_nand is only written but never read.
Remove this unused and unneeded member.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220702231227.1579176-8-martin.blumenstingl@googlemail.com
2022-09-20 10:06:55 +02:00
Martin Blumenstingl
dbe5f7880f mtd: rawnand: intel: Remove unused nand_pa member from ebu_nand_cs
The nand_pa member from struct ebu_nand_cs is only written but never
read. Remove this unused and unneeded member.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220702231227.1579176-7-martin.blumenstingl@googlemail.com
2022-09-20 10:06:53 +02:00
Martin Blumenstingl
ebe0cd60fc mtd: rawnand: intel: Don't re-define NAND_DATA_IFACE_CHECK_ONLY
NAND_DATA_IFACE_CHECK_ONLY is already defined in
include/linux/mtd/rawnand.h which is also included by the driver. Drop
the re-definition from the intel-nand-controller driver.

Fixes: 0b1039f016 ("mtd: rawnand: Add NAND controller support on Intel LGM SoC")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220702231227.1579176-6-martin.blumenstingl@googlemail.com
2022-09-20 10:06:52 +02:00
Martin Blumenstingl
68c02ebaa3 mtd: rawnand: intel: Remove undocumented compatible string
The "intel,nand-controller" compatible string is not part of the
dt-bindings. Remove it from the driver as it's not supposed to be used
without any documentation for it.

Fixes: 0b1039f016 ("mtd: rawnand: Add NAND controller support on Intel LGM SoC")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220702231227.1579176-5-martin.blumenstingl@googlemail.com
2022-09-20 10:06:50 +02:00
Martin Blumenstingl
bfc618fcc3 mtd: rawnand: intel: Read the chip-select line from the correct OF node
The chip select has to be read from the flash node which is a child node
of the NAND controller.

Fixes: 0b1039f016 ("mtd: rawnand: Add NAND controller support on Intel LGM SoC")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220702231227.1579176-4-martin.blumenstingl@googlemail.com
2022-09-20 10:06:49 +02:00
Wolfram Sang
80b7e92863 mtd: move from strlcpy with unused retval to strscpy
Follow the advice of the below link and prefer 'strscpy' in this
subsystem. Conversion is 1:1 because the return value is not used.
Generated by a coccinelle script.

Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220818210033.7084-1-wsa+renesas@sang-engineering.com
2022-09-19 18:14:53 +02:00
Gaosheng Cui
bf3e6b8f83 mtd: ftl: use container_of() rather than cast
The container_of() is much more readable and also safer.

Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220816135910.268016-1-cuigaosheng1@huawei.com
2022-09-19 18:14:53 +02:00
Christophe JAILLET
8d704c4e1e mtd: Fix a typo in a comment
o and t are swapped.
s/mtdpsotre/mtdpstore/

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/de1b1134f056ea7563bb0a9bb2f66ede1475728d.1659816434.git.christophe.jaillet@wanadoo.fr
2022-09-19 18:14:53 +02:00
Colin Ian King
f535ca406f mtd: devices: docg3: Use correct function names in comment blocks
The incorrect function name is being used in the comment for functions
doc_set_reliable_mode, doc_read_seek and docg3_probe. Correct these
comments.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220805175423.2374939-1-colin.i.king@gmail.com
2022-09-19 18:14:53 +02:00
Zeng Jingxiang
8b740c08eb mtd: physmap-core: Fix NULL pointer dereferencing in of_select_probe_type()
Coverity complains of a possible NULL dereference:

in of_select_probe_type():
1. returned_null: of_match_device() returns NULL.
2. var_assigned: match = NULL return value from of_match_device()
309	match = of_match_device(of_flash_match, &dev->dev);

3.dereference: Dereferencing the NULL pointer match.
310	probe_type = match->data;

Signed-off-by: Zeng Jingxiang <linuszeng@tencent.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220727060302.1560325-1-zengjx95@gmail.com
2022-09-19 18:14:53 +02:00
William Dean
26e784433e mtd: devices: docg3: check the return value of devm_ioremap() in the probe
The function devm_ioremap() in docg3_probe() can fail, so
its return value should be checked.

Fixes: 82402aeb8c ("mtd: docg3: Use devm_*() functions")
Reported-by: Hacash Robot <hacashRobot@santino.com>
Signed-off-by: William Dean <williamsukatube@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220722091644.2937953-1-williamsukatube@163.com
2022-09-19 18:14:38 +02:00
Rafał Miłecki
002181f5b1 mtd: parsers: add Broadcom's U-Boot parser
Broadcom stores environment variables blocks inside U-Boot partition
itself. This driver finds & registers them.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220711153041.6036-2-zajec5@gmail.com
2022-09-19 18:13:08 +02:00
Uwe Kleine-König
ed5c2f5fd1 i2c: Make remove callback return void
The value returned by an i2c driver's remove function is mostly ignored.
(Only an error message is printed if the value is non-zero that the
error is ignored.)

So change the prototype of the remove function to return no value. This
way driver authors are not tempted to assume that passing an error to
the upper layer is a good idea. All drivers are adapted accordingly.
There is no intended change of behaviour, all callbacks were prepared to
return 0 before.

Reviewed-by: Peter Senna Tschudin <peter.senna@gmail.com>
Reviewed-by: Jeremy Kerr <jk@codeconstruct.com.au>
Reviewed-by: Benjamin Mugnier <benjamin.mugnier@foss.st.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Crt Mori <cmo@melexis.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Marek Behún <kabel@kernel.org> # for leds-turris-omnia
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Petr Machata <petrm@nvidia.com> # for mlxsw
Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com> # for surface3_power
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> # for bmc150-accel-i2c + kxcjk-1013
Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> # for media/* + staging/media/*
Acked-by: Miguel Ojeda <ojeda@kernel.org> # for auxdisplay/ht16k33 + auxdisplay/lcd2s
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com> # for versaclock5
Reviewed-by: Ajay Gupta <ajayg@nvidia.com> # for ucsi_ccg
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # for iio
Acked-by: Peter Rosin <peda@axentia.se> # for i2c-mux-*, max9860
Acked-by: Adrien Grassein <adrien.grassein@gmail.com> # for lontium-lt8912b
Reviewed-by: Jean Delvare <jdelvare@suse.de> # for hwmon, i2c-core and i2c/muxes
Acked-by: Corey Minyard <cminyard@mvista.com> # for IPMI
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com> # for drivers/power
Acked-by: Krzysztof Hałasa <khalasa@piap.pl>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
2022-08-16 12:46:26 +02:00
William Zhang
7bb49d774f arm64: bcmbca: Make BCM4908 drivers depend on ARCH_BCMBCA
With Broadcom Broadband arch ARCH_BCMBCA supported in the kernel, this
patch series migrate the ARCH_BCM4908 symbol to ARCH_BCMBCA. Hence
replace ARCH_BCM4908 with ARCH_BCMBCA in subsystem Kconfig files.

Signed-off-by: William Zhang <william.zhang@broadcom.com>
Acked-by: Guenter Roeck <linux@roeck-us.net> (for watchdog)
Acked-by: Bjorn Helgaas <bhelgaas@google.com> (for drivers/pci)
Acked-by: Wolfram Sang <wsa@kernel.org> (for i2c)
Acked-by: Philipp Zabel <p.zabel@pengutronix.de> (for reset)
Link: https://lore.kernel.org/r/20220803175455.47638-7-william.zhang@broadcom.com
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2022-08-15 09:55:34 -07:00
Linus Torvalds
74cae210a3 MTD core changes:
* Dynamic partition support
 * Fix deadlock in sm_ftl
 * Various refcount fixes in maps, partitions and parser code
 * Integer overflow fixes in mtdchar
 * Support for Sercomm partitions
 
 NAND driver changes:
 * Clockrate fix for arasan
 * Add ATO25D1GA support
 * Double free fix for meson driver
 * Fix probe/remove methods in cafe NAND
 * Support unprotected spare data pages in qcom_nandc
 
 SPI NOR core changes:
 * move SECT_4K_PMC flag out of the core as it's a vendor specific flag
 * s/addr_width/addr_nbytes: address width means the number of IO lines
 used for the address, whereas in the code it is used as the number of
 address bytes.
 * do not change nor->addr_nbytes at SFDP parsing time. At the SFDP parsing
 time we should not change members of struct spi_nor, but instead fill
 members of struct spi_nor_flash_parameters which could later on be used
 by the callers.
 * track flash's internal address mode so that we can use 4B opcodes
 together with opcodes that don't have a 4B opcode correspondent.
 
 SPI NOR manufacturer drivers changes:
 * esmt: Rename "f25l32qa" flash name to "f25l32qa-2s".
 * micron-st: Skip FSR reading if SPI controller does not support it to
 allow flashes that support FSR to work even when attached to such SPI
 controllers.
 * spansion: Add s25hl-t/s25hs-t IDs and fixups.
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Merge tag 'mtd/for-5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux

Pull MTD updates from Richard Weinberger:
 "MTD core changes:

   - Dynamic partition support

   - Fix deadlock in sm_ftl

   - Various refcount fixes in maps, partitions and parser code

   - Integer overflow fixes in mtdchar

   - Support for Sercomm partitions

  NAND driver changes:

   - Clockrate fix for arasan

   - Add ATO25D1GA support

   - Double free fix for meson driver

   - Fix probe/remove methods in cafe NAND

   - Support unprotected spare data pages in qcom_nandc

  SPI NOR core changes:

   - move SECT_4K_PMC flag out of the core as it's a vendor specific
     flag

   - s/addr_width/addr_nbytes/g: address width means the number of IO
     lines used for the address, whereas in the code it is used as the
     number of address bytes.

   - do not change nor->addr_nbytes at SFDP parsing time. At the SFDP
     parsing time we should not change members of struct spi_nor, but
     instead fill members of struct spi_nor_flash_parameters which could
     later on be used by the callers.

   - track flash's internal address mode so that we can use 4B opcodes
     together with opcodes that don't have a 4B opcode correspondent.

  SPI NOR manufacturer drivers changes:

   - esmt: Rename "f25l32qa" flash name to "f25l32qa-2s".

   - micron-st: Skip FSR reading if SPI controller does not support it
     to allow flashes that support FSR to work even when attached to
     such SPI controllers.

   - spansion: Add s25hl-t/s25hs-t IDs and fixups"

* tag 'mtd/for-5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (53 commits)
  mtd: core: check partition before dereference
  mtd: spi-nor: fix spi_nor_spimem_setup_op() call in spi_nor_erase_{sector,chip}()
  mtd: spi-nor: spansion: Add s25hl-t/s25hs-t IDs and fixups
  mtd: spi-nor: spansion: Add local function to discover page size
  mtd: spi-nor: core: Track flash's internal address mode
  mtd: spi-nor: core: Return error code from set_4byte_addr_mode()
  mtd: spi-nor: Do not change nor->addr_nbytes at SFDP parsing time
  mtd: spi-nor: core: Shrink the storage size of the flash_info's addr_nbytes
  mtd: spi-nor: s/addr_width/addr_nbytes
  mtd: spi-nor: esmt: Use correct name of f25l32qa
  mtd: spi-nor: micron-st: Skip FSR reading if SPI controller does not support it
  MAINTAINERS: Use my kernel.org email
  mtd: rawnand: arasan: Fix clock rate in NV-DDR
  mtd: rawnand: arasan: Update NAND bus clock instead of system clock
  mtd: core: introduce of support for dynamic partitions
  dt-bindings: mtd: partitions: add additional example for qcom,smem-part
  dt-bindings: mtd: partitions: support label/name only partition
  mtd: spi-nor: move SECT_4K_PMC special handling
  mtd: dataflash: Add SPI ID table
  mtd: hyperbus: rpc-if: Fix RPM imbalance in probe error path
  ...
2022-08-05 14:13:45 -07:00
Linus Torvalds
c013d0af81 for-5.20/block-2022-07-29
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Merge tag 'for-5.20/block-2022-07-29' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:

 - Improve the type checking of request flags (Bart)

 - Ensure queue mapping for a single queues always picks the right queue
   (Bart)

 - Sanitize the io priority handling (Jan)

 - rq-qos race fix (Jinke)

 - Reserved tags handling improvements (John)

 - Separate memory alignment from file/disk offset aligment for O_DIRECT
   (Keith)

 - Add new ublk driver, userspace block driver using io_uring for
   communication with the userspace backend (Ming)

 - Use try_cmpxchg() to cleanup the code in various spots (Uros)

 - Finally remove bdevname() (Christoph)

 - Clean up the zoned device handling (Christoph)

 - Clean up independent access range support (Christoph)

 - Clean up and improve block sysfs handling (Christoph)

 - Clean up and improve teardown of block devices.

   This turns the usual two step process into something that is simpler
   to implement and handle in block drivers (Christoph)

 - Clean up chunk size handling (Christoph)

 - Misc cleanups and fixes (Bart, Bo, Dan, GuoYong, Jason, Keith, Liu,
   Ming, Sebastian, Yang, Ying)

* tag 'for-5.20/block-2022-07-29' of git://git.kernel.dk/linux-block: (178 commits)
  ublk_drv: fix double shift bug
  ublk_drv: make sure that correct flags(features) returned to userspace
  ublk_drv: fix error handling of ublk_add_dev
  ublk_drv: fix lockdep warning
  block: remove __blk_get_queue
  block: call blk_mq_exit_queue from disk_release for never added disks
  blk-mq: fix error handling in __blk_mq_alloc_disk
  ublk: defer disk allocation
  ublk: rewrite ublk_ctrl_get_queue_affinity to not rely on hctx->cpumask
  ublk: fold __ublk_create_dev into ublk_ctrl_add_dev
  ublk: cleanup ublk_ctrl_uring_cmd
  ublk: simplify ublk_ch_open and ublk_ch_release
  ublk: remove the empty open and release block device operations
  ublk: remove UBLK_IO_F_PREFLUSH
  ublk: add a MAINTAINERS entry
  block: don't allow the same type rq_qos add more than once
  mmc: fix disk/queue leak in case of adding disk failure
  ublk_drv: fix an IS_ERR() vs NULL check
  ublk: remove UBLK_IO_F_INTEGRITY
  ublk_drv: remove unneeded semicolon
  ...
2022-08-02 13:46:35 -07:00
Tetsuo Handa
7ec4cdb321 mtd: core: check partition before dereference
syzbot is reporting NULL pointer dereference at mtd_check_of_node() [1],
for mtdram test device (CONFIG_MTD_MTDRAM) is not partition.

Link: https://syzkaller.appspot.com/bug?extid=fe013f55a2814a9e8cfd [1]
Reported-by: syzbot <syzbot+fe013f55a2814a9e8cfd@syzkaller.appspotmail.com>
Reported-by: kernel test robot <oliver.sang@intel.com>
Fixes: ad9b10d1ea ("mtd: core: introduce of support for dynamic partitions")
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
CC: stable@vger.kernel.org
Signed-off-by: Richard Weinberger <richard@nod.at>
2022-08-01 21:33:11 +02:00
Richard Weinberger
9661524b9b SPI NOR core changes:
- move SECT_4K_PMC flag out of the core as it's a vendor specific flag
 - s/addr_width/addr_nbytes: address width means the number of IO lines
   used for the address, whereas in the code it is used as the number of
   address bytes.
 - do not change nor->addr_nbytes at SFDP parsing time. At the SFDP parsing
   time we should not change members of struct spi_nor, but instead fill
   members of struct spi_nor_flash_parameters which could later on be used
   by the callers.
 - track flash's internal address mode so that we can use 4B opcodes
   together with opcodes that don't have a 4B opcode correspondent.
 
 SPI NOR manufacturer drivers changes:
 - esmt: Rename "f25l32qa" flash name to "f25l32qa-2s".
 - micron-st: Skip FSR reading if SPI controller does not support it to
   allow flashes that support FSR to work even when attached to such SPI
   controllers.
 - spansion: Add s25hl-t/s25hs-t IDs and fixups.
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Merge tag 'spi-nor/for-5.20' into mtd/next

SPI NOR core changes:
- move SECT_4K_PMC flag out of the core as it's a vendor specific flag
- s/addr_width/addr_nbytes: address width means the number of IO lines
  used for the address, whereas in the code it is used as the number of
  address bytes.
- do not change nor->addr_nbytes at SFDP parsing time. At the SFDP parsing
  time we should not change members of struct spi_nor, but instead fill
  members of struct spi_nor_flash_parameters which could later on be used
  by the callers.
- track flash's internal address mode so that we can use 4B opcodes
  together with opcodes that don't have a 4B opcode correspondent.

SPI NOR manufacturer drivers changes:
- esmt: Rename "f25l32qa" flash name to "f25l32qa-2s".
- micron-st: Skip FSR reading if SPI controller does not support it to
  allow flashes that support FSR to work even when attached to such SPI
  controllers.
- spansion: Add s25hl-t/s25hs-t IDs and fixups.
2022-08-01 21:31:22 +02:00
Richard Weinberger
e8166841a6 Merge remote-tracking branch 'korg_git/nand/next' into mtd/next 2022-08-01 21:24:54 +02:00
Patrice Chotard
f8cd9f632f mtd: spi-nor: fix spi_nor_spimem_setup_op() call in spi_nor_erase_{sector,chip}()
For erase operations, reg_proto must be used as indicated in
struct spi_nor description in spi-nor.h.

This issue was found when DT property spi-tx-bus-width is set to 4.
In this case the spi_mem_op->addr.buswidth is set to 4 for erase command
which is not correct.

Tested on stm32mp157c-ev1 board with mx66l51235f spi-nor.

Fixes: 0e30f47232 ("mtd: spi-nor: add support for DTR protocol")
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
[ta: use nor->reg_proto in spi_nor_controller_ops_erase()]
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Tested-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Link: https://lore.kernel.org/r/20220629133013.3382393-1-patrice.chotard@foss.st.com
2022-07-28 05:34:23 +03:00
Takahiro Kuwano
b6b23833fc mtd: spi-nor: spansion: Add s25hl-t/s25hs-t IDs and fixups
The S25HL-T/S25HS-T family is the Infineon SEMPER Flash with Quad SPI.

These Infineon chips support volatile version of configuration registers
and it is recommended to update volatile registers in the field application
due to a risk of the non-volatile registers corruption by power interrupt.
Add support for volatile QE bit.

For the single-die package parts (512Mb and 1Gb), only bottom 4KB and
uniform sector sizes are supported. This is due to missing or incorrect
entries in SMPT. Fixup for other sector sizes configurations will be
followed up as needed.

Tested on Xilinx Zynq-7000 FPGA board.

Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Acked-by: Michael Walle <michael@walle.cc>
Link: https://lore.kernel.org/r/20220725092505.446315-8-tudor.ambarus@microchip.com
2022-07-28 05:19:27 +03:00
Takahiro Kuwano
a6b50aa127 mtd: spi-nor: spansion: Add local function to discover page size
The page size check in s28hs512t fixup can be used for s25hs/hl-t as well.
Move that to a newly created local function.

Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Link: https://lore.kernel.org/r/20220725092505.446315-7-tudor.ambarus@microchip.com
2022-07-28 05:18:28 +03:00
Tudor Ambarus
d7931a2150 mtd: spi-nor: core: Track flash's internal address mode
We need to track the flash's internal address mode as there are flashes
that can operate with 4B opcodes but unfortunately do not have a 4B opcode
correspondent for all the 3B opcodes. Such an example is the Infineon
Semper chips which provide 4B opcodes for read/program/erase but do not
provide 4B opcodes for Read/Write Any Register. These registers are
indexed by address and require the internal address mode of the flash
before Read/Write Any Register opcodes are issued.
4B opcodes are preferred over changing the flash's address mode to 4byte,
as set_4byte_addr_mode could be done in a non-volatile way and could break
the boot sequence. Thus we need to track the flash's internal address mode
so that we can use 4B opcodes together with opcodes that don't have a 4B
opcode correspondent. Track flash's internal address mode.

addr_mode_nbytes is discovered when parsing BFPT. For the
BFPT_DWORD1_ADDRESS_BYTES_3_OR_4 case, one could introduce a method that
queries the flash's internal address mode at run-time (works for Winbond).
If a run-time querying can not be accomplished or if SFDP is not defined
at all, but the address mode is volatile and resets to a default known
value at boot, one can change the default addr_mode_nbytes value of 3 by
introducing a flash_info flag. If the address mode can not be queried,
discovered and it is configured via a non-volatile register, we may
introduce a dt property, but it will harm the generic approach of the
jedec,spi-nor compatible. All this complexity is not needed now, so let it
for future development.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Link: https://lore.kernel.org/r/20220725092505.446315-6-tudor.ambarus@microchip.com
2022-07-28 05:14:28 +03:00
Takahiro Kuwano
08412e72af mtd: spi-nor: core: Return error code from set_4byte_addr_mode()
The prams->set_4byte_addr_mode returns error code but is not handled
in spi_nor_init(). Handle the return code from set_4byte_addr_mode().

Suggested-by: Michael Walle <michael@walle.cc>
Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Link: https://lore.kernel.org/r/20220725092505.446315-5-tudor.ambarus@microchip.com
2022-07-28 05:11:56 +03:00
Tudor Ambarus
47c6f8a67f mtd: spi-nor: Do not change nor->addr_nbytes at SFDP parsing time
At the SFDP parsing time we should not change members of struct spi_nor,
but instead fill members of struct spi_nor_flash_parameters which could
later on be used by callers. The caller will then decide if SFDP params
should be used and more importantly when they should be used. Clean the
code flow and don't initialize nor->addr_nbytes at SFDP parsing time.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Tested-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Link: https://lore.kernel.org/r/20220725092505.446315-4-tudor.ambarus@microchip.com
2022-07-28 05:11:56 +03:00
Tudor Ambarus
aa5d980a14 mtd: spi-nor: core: Shrink the storage size of the flash_info's addr_nbytes
The maximum number of address bytes in SPI NOR is 4. Shrink the storage
size of the flash_info's addr_nbytes.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Link: https://lore.kernel.org/r/20220725092505.446315-3-tudor.ambarus@microchip.com
2022-07-28 05:11:56 +03:00
Tudor Ambarus
c452d49849 mtd: spi-nor: s/addr_width/addr_nbytes
Address width was an unfortunate name, as it means the number of IO lines
used for the address, whereas in the code it is used as the number of
address bytes. s/addr_width/addr_nbytes throughout the entire SPI NOR
framework.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Acked-by: Pratyush Yadav <p.yadav@ti.com>
Link: https://lore.kernel.org/r/20220725092505.446315-2-tudor.ambarus@microchip.com
2022-07-28 05:11:56 +03:00
Sungbo Eo
41e4f15f02 mtd: spi-nor: esmt: Use correct name of f25l32qa
The flash ID of F25L32QA is 0x8c4016, whereas that of F25L32QA(2S) is
0x8c4116. F25L32QA(2S) is the newer version of F25L32QA and its BPn bits
are non-volatile, unlike its older version.

Signed-off-by: Sungbo Eo <mans0n@gorani.run>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Link: https://lore.kernel.org/r/20210723141232.15659-1-mans0n@gorani.run
Datasheet: https://www.esmt.com.tw/upload/pdf/ESMT/datasheets/F25L32QA.pdf
Datasheet: https://www.esmt.com.tw/upload/pdf/ESMT/datasheets/F25L32QA_1(2S).pdf
2022-07-19 13:05:31 +03:00
Mika Westerberg
90c517f435 mtd: spi-nor: micron-st: Skip FSR reading if SPI controller does not support it
The Intel SPI controller does not support low level operations, like
reading the flag status register (FSR). It only exposes a set of high
level operations for software to use. For this reason check the return
value of micron_st_nor_read_fsr() and if the operation was not
supported, use the status register value only. This allows the chip to
work even when attached to Intel SPI controller (there are such systems
out there).

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Link: https://lore.kernel.org/r/20220506105158.43613-1-mika.westerberg@linux.intel.com
2022-07-19 12:20:23 +03:00
Sascha Hauer
0fddf9ad06 mtd: rawnand: gpmi: Set WAIT_FOR_READY timeout based on program/erase times
06781a5026 Fixes the calculation of the DEVICE_BUSY_TIMEOUT register
value from busy_timeout_cycles. busy_timeout_cycles is calculated wrong
though: It is calculated based on the maximum page read time, but the
timeout is also used for page write and block erase operations which
require orders of magnitude bigger timeouts.

Fix this by calculating busy_timeout_cycles from the maximum of
tBERS_max and tPROG_max.

This is for now the easiest and most obvious way to fix the driver.
There's room for improvements though: The NAND_OP_WAITRDY_INSTR tells us
the desired timeout for the current operation, so we could program the
timeout dynamically for each operation instead of setting a fixed
timeout. Also we could wire up the interrupt handler to actually detect
and forward timeouts occurred when waiting for the chip being ready.

As a sidenote I verified that the change in 06781a5026 is really
correct. I wired up the interrupt handler in my tree and measured the
time between starting the operation and the timeout interrupt handler
coming in. The time increases 41us with each step in the timeout
register which corresponds to 4096 clock cycles with the 99MHz clock
that I have.

Fixes: 06781a5026 ("mtd: rawnand: gpmi: Fix setting busy timeout setting")
Fixes: b120612206 ("mtd: rawniand: gpmi: use core timings instead of an empirical derivation")
Cc: stable@vger.kernel.org
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Han Xu <han.xu@nxp.com>
Tested-by: Tomasz Moń <tomasz.mon@camlingroup.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2022-07-15 17:41:11 +02:00
Olga Kitaina
e16eceea86 mtd: rawnand: arasan: Fix clock rate in NV-DDR
According to the Arasan NAND controller spec, the flash clock rate for SDR
must be <= 100 MHz, while for NV-DDR it must be the same as the rate of the
CLK line for the mode. The driver previously always set 100 MHz for NV-DDR,
which would result in incorrect behavior for NV-DDR modes 0-4.

The appropriate clock rate can be calculated from the NV-DDR timing
parameters as 1/tCK, or for rates measured in picoseconds,
10^12 / nand_nvddr_timings->tCK_min.

Fixes: 197b88fecc ("mtd: rawnand: arasan: Add new Arasan NAND controller")
CC: stable@vger.kernel.org # 5.8+
Signed-off-by: Olga Kitaina <okitain@gmail.com>
Signed-off-by: Amit Kumar Mahapatra <amit.kumar-mahapatra@xilinx.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220628154824.12222-3-amit.kumar-mahapatra@xilinx.com
2022-06-29 13:38:08 +02:00
Amit Kumar Mahapatra
7499bfeedb mtd: rawnand: arasan: Update NAND bus clock instead of system clock
In current implementation the Arasan NAND driver is updating the
system clock(i.e., anand->clk) in accordance to the timing modes
(i.e., SDR or NVDDR). But as per the Arasan NAND controller spec the
flash clock or the NAND bus clock(i.e., nfc->bus_clk), need to be
updated instead. This patch keeps the system clock unchanged and updates
the NAND bus clock as per the timing modes.

Fixes: 197b88fecc ("mtd: rawnand: arasan: Add new Arasan NAND controller")
CC: stable@vger.kernel.org # 5.8+
Signed-off-by: Amit Kumar Mahapatra <amit.kumar-mahapatra@xilinx.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220628154824.12222-2-amit.kumar-mahapatra@xilinx.com
2022-06-29 13:36:33 +02:00
Christian Marangi
ad9b10d1ea mtd: core: introduce of support for dynamic partitions
We have many parser that register mtd partitions at runtime. One example
is the cmdlinepart or the smem-part parser where the compatible is defined
in the dts and the partitions gets detected and registered by the
parser. This is problematic for the NVMEM subsystem that requires an OF
node to detect NVMEM cells.

To fix this problem, introduce an additional logic that will try to
assign an OF node to the MTD if declared.

On MTD addition, it will be checked if the MTD has an OF node and if
not declared will check if a partition with the same label / node name is
declared in DTS. If an exact match is found, the partition dynamically
allocated by the parser will have a connected OF node.

The NVMEM subsystem will detect the OF node and register any NVMEM cells
declared statically in the DTS.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220622010628.30414-4-ansuelsmth@gmail.com
2022-06-29 13:36:17 +02:00
Christoph Hellwig
8b9ab62662 block: remove blk_cleanup_disk
blk_cleanup_disk is nothing but a trivial wrapper for put_disk now,
so remove it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20220619060552.1850436-7-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-06-28 06:33:15 -06:00
Michael Walle
77d4ac6d38 mtd: spi-nor: move SECT_4K_PMC special handling
The SECT_4K_PMC flag will set a device specific opcode for the 4k sector
erase. Instead of handling it in the core, we can move it to a
late_init(). In that late init, loop over all erase types, look for the
4k size and replace the opcode.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Link: https://lore.kernel.org/r/20220418112650.2791459-1-michael@walle.cc
2022-06-27 15:42:10 +05:30
Mark Brown
ac4f83482a mtd: dataflash: Add SPI ID table
Currently autoloading for SPI devices does not use the DT ID table, it uses
SPI modalises. Supporting OF modalises is going to be difficult if not
impractical, an attempt was made but has been reverted, so ensure that
module autoloading works for this driver by adding an id_table listing the
SPI IDs for everything.

Fixes: 96c8395e21 ("spi: Revert modalias changes")
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220620152313.708768-1-broonie@kernel.org
2022-06-24 20:47:38 +02:00