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Sascha Hauer ef347c0cfd mtd: rawnand: gpmi: Implement exec_op 
The gpmi driver performance suffers from NAND operations being split
in multiple small DMA transfers. This has been forced by the NAND layer
in the former days, but now with exec_op we can use the controller as
intended.

With this patch gpmi_nfc_exec_op becomes the main entry point to NAND
operations. Here all instructions are collected and chained as separate
DMA transfers. In the end whole chain is fired and waited to be
finished. gpmi_nfc_exec_op only does the hardware operations, bad block
marker swapping and buffer scrambling is done by the callers. It's worth
noting that the nand_*_op functions always take the buffer lengths for
the data that the NAND chip actually transfers. When doing BCH we have
to calculate the net data size from the raw data size in some places.

This patch has been tested with 2048/64 and 2048/128 byte NAND on
i.MX6q. mtd_oobtest, mtd_subpagetest and mtd_speedtest run without
errors. nandbiterrs, nandpagetest and nandsubpagetest userspace tests
from mtdutils run without errors and UBIFS can successfully be mounted.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2019-06-27 20:05:30 +02:00
..
accessibility treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 70 2019-05-24 17:36:47 +02:00
acpi Power management fixes for 5.2-rc3 2019-05-31 10:38:35 -07:00
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block for-linus-20190601 2019-06-02 09:27:44 -07:00
bluetooth treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
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clk SPDX update for 5.2-rc3, round 1 2019-05-31 08:34:32 -07:00
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connector treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
counter treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
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crypto crypto: ux500 - fix license comment syntax error 2019-06-01 18:29:58 +02:00
dax libnvdimm fixes v5.2-rc2 2019-05-25 10:11:23 -07:00
dca treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 33 2019-05-24 17:27:11 +02:00
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dio treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
dma mtd: rawnand: gpmi: Implement exec_op 2019-06-27 20:05:30 +02:00
dma-buf treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
edac treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
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firmware Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-06-02 11:06:13 -07:00
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gpio SPDX update for 5.2-rc3, round 1 2019-05-31 08:34:32 -07:00
gpu SPDX update for 5.2-rc3, round 1 2019-05-31 08:34:32 -07:00
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i2c Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2019-06-02 10:18:11 -07:00
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iio SPDX update for 5.2-rc3, round 1 2019-05-31 08:34:32 -07:00
infiniband treewide: Add SPDX license identifier - Kbuild 2019-05-30 11:32:33 -07:00
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interconnect treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
iommu drivers/iommu/intel-iommu.c: fix variable 'iommu' set but not used 2019-06-01 15:51:32 -07:00
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isdn SPDX update for 5.2-rc3, round 1 2019-05-31 08:34:32 -07:00
leds LED fix for 5.2-rc3 2019-06-02 10:14:25 -07:00
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mtd mtd: rawnand: gpmi: Implement exec_op 2019-06-27 20:05:30 +02:00
mux
net SPDX update for 5.2-rc3, round 1 2019-05-31 08:34:32 -07:00
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nubus treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
nvdimm libnvdimm fixes v5.2-rc2 2019-05-25 10:11:23 -07:00
nvme for-linus-20190524 2019-05-24 16:02:14 -07:00
nvmem treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
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pci PCI: PM: Avoid possible suspend-to-idle issue 2019-05-27 10:55:08 +02:00
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perf treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
phy treewide: fix typos of SPDX-License-Identifier 2019-06-01 18:29:58 +02:00
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regulator treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
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s390 SCSI fixes on 20190601 2019-06-02 09:26:34 -07:00
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scsi SCSI fixes on 20190601 2019-06-02 09:26:34 -07:00
sfi treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
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spmi treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
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staging Staging/IIO driver fixes for 5.2-rc3 2019-05-31 08:31:45 -07:00
target treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
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thermal Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal 2019-06-02 10:16:09 -07:00
thunderbolt treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
tty vt/fbcon: deinitialize resources in visual_init() after failed memory allocation 2019-05-24 17:08:18 +02:00
uio treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
usb usbip: usbip_host: fix stub_dev lock context imbalance regression 2019-05-29 13:26:32 -07:00
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video SPDX update for 5.2-rc3, round 1 2019-05-31 08:34:32 -07:00
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xen xen: fixes for 5.2-rc3 2019-05-31 10:53:34 -07:00
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