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2020-11-30mptcp: open code mptcp variant for lock_sockPaolo Abeni
This allows invoking an additional callback under the socket spin lock. Will be used by the next patches to avoid additional spin lock contention. Acked-by: Florian Westphal <fw@strlen.de> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-01xsk: Propagate napi_id to XDP socket Rx pathBjörn Töpel
Add napi_id to the xdp_rxq_info structure, and make sure the XDP socket pick up the napi_id in the Rx path. The napi_id is used to find the corresponding NAPI structure for socket busy polling. Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Acked-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Tariq Toukan <tariqt@nvidia.com> Link: https://lore.kernel.org/bpf/20201130185205.196029-7-bjorn.topel@gmail.com
2020-12-01net: Add SO_BUSY_POLL_BUDGET socket optionBjörn Töpel
This option lets a user set a per socket NAPI budget for busy-polling. If the options is not set, it will use the default of 8. Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Jakub Kicinski <kuba@kernel.org> Link: https://lore.kernel.org/bpf/20201130185205.196029-3-bjorn.topel@gmail.com
2020-12-01net: Introduce preferred busy-pollingBjörn Töpel
The existing busy-polling mode, enabled by the SO_BUSY_POLL socket option or system-wide using the /proc/sys/net/core/busy_read knob, is an opportunistic. That means that if the NAPI context is not scheduled, it will poll it. If, after busy-polling, the budget is exceeded the busy-polling logic will schedule the NAPI onto the regular softirq handling. One implication of the behavior above is that a busy/heavy loaded NAPI context will never enter/allow for busy-polling. Some applications prefer that most NAPI processing would be done by busy-polling. This series adds a new socket option, SO_PREFER_BUSY_POLL, that works in concert with the napi_defer_hard_irqs and gro_flush_timeout knobs. The napi_defer_hard_irqs and gro_flush_timeout knobs were introduced in commit 6f8b12d661d0 ("net: napi: add hard irqs deferral feature"), and allows for a user to defer interrupts to be enabled and instead schedule the NAPI context from a watchdog timer. When a user enables the SO_PREFER_BUSY_POLL, again with the other knobs enabled, and the NAPI context is being processed by a softirq, the softirq NAPI processing will exit early to allow the busy-polling to be performed. If the application stops performing busy-polling via a system call, the watchdog timer defined by gro_flush_timeout will timeout, and regular softirq handling will resume. In summary; Heavy traffic applications that prefer busy-polling over softirq processing should use this option. Example usage: $ echo 2 | sudo tee /sys/class/net/ens785f1/napi_defer_hard_irqs $ echo 200000 | sudo tee /sys/class/net/ens785f1/gro_flush_timeout Note that the timeout should be larger than the userspace processing window, otherwise the watchdog will timeout and fall back to regular softirq processing. Enable the SO_BUSY_POLL/SO_PREFER_BUSY_POLL options on your socket. Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Jakub Kicinski <kuba@kernel.org> Link: https://lore.kernel.org/bpf/20201130185205.196029-2-bjorn.topel@gmail.com
2020-11-30NFSD: Add helper for decoding locker4Chuck Lever
Refactor for clarity. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30NFSD: Replace READ* macros in nfsd4_decode_commit()Chuck Lever
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30NFSD: Replace the internals of the READ_BUF() macroChuck Lever
Convert the READ_BUF macro in nfs4xdr.c from open code to instead use the new xdr_stream-style decoders already in use by the encode side (and by the in-kernel NFS client implementation). Once this conversion is done, each individual NFSv4 argument decoder can be independently cleaned up to replace these macros with C code. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30SUNRPC: Prepare for xdr_stream-style decoding on the server-sideChuck Lever
A "permanent" struct xdr_stream is allocated in struct svc_rqst so that it is usable by all server-side decoders. A per-rqst scratch buffer is also allocated to handle decoding XDR data items that cross page boundaries. To demonstrate how it will be used, add the first call site for the new svcxdr_init_decode() API. As an additional part of the overall conversion, add symbolic constants for successful and failed XDR operations. Returning "0" is overloaded. Sometimes it means something failed, but sometimes it means success. To make it more clear when XDR decoding functions succeed or fail, introduce symbolic constants. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30SUNRPC: Add xdr_set_scratch_page() and xdr_reset_scratch_buffer()Chuck Lever
Clean up: De-duplicate some frequently-used code. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30SUNRPC: Move the svc_xdr_recvfrom() tracepointChuck Lever
Commit c509f15a5801 ("SUNRPC: Split the xdr_buf event class") added display of the rqst's XID to the svc_xdr_buf_class. However, when the recvfrom tracepoint fires, rq_xid has yet to be filled in with the current XID. So it ends up recording the previous XID that was handled by that svc_rqst. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30svcrdma: Use the new parsed chunk list when pulling Read chunksChuck Lever
As a pre-requisite for handling multiple Read chunks in each Read list, convert svc_rdma_recv_read_chunk() to use the new parsed Read chunk list. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30svcrdma: Clean up chunk tracepointsChuck Lever
We already have trace_svcrdma_decode_rseg(), which records each ingress Read segment. Instead of reporting those again when they are about to be posted as RDMA Reads, let's fire one tracepoint before posting each type of chunk. So we'll get: nfsd-1998 [002] 321.666615: svcrdma_decode_rseg: cq.id=4 cid=42 segno=0 position=0 192@0x013ca9ebfae14000:0xb0010b05 nfsd-1998 [002] 321.666615: svcrdma_decode_rseg: cq.id=4 cid=42 segno=1 position=0 7688@0x013ca9ebf914e000:0xb0010a05 nfsd-1998 [002] 321.666615: svcrdma_decode_rseg: cq.id=4 cid=42 segno=2 position=0 28@0x013ca9ebfae15000:0xb0010905 nfsd-1998 [002] 321.666622: svcrdma_decode_rqst: cq.id=4 cid=42 xid=0x013ca9eb vers=1 credits=128 proc=RDMA_NOMSG hdrlen=100 nfsd-1998 [002] 321.666642: svcrdma_post_read_chunk: cq.id=3 cid=112 sqecount=3 kworker/2:1H-221 [002] 321.673949: svcrdma_wc_read: cq.id=3 cid=112 status=SUCCESS (0/0x0) Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30svcrdma: Remove chunk list pointersChuck Lever
Clean up: These pointers are no longer used. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30svcrdma: Support multiple Write chunks in svc_rdma_send_reply_chunkChuck Lever
Refactor svc_rdma_send_reply_chunk() so that it Sends only the parts of rq_res that do not contain a result payload. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30svcrdma: Support multiple Write chunks in svc_rdma_map_reply_msg()Chuck Lever
Refactor: svc_rdma_map_reply_msg() is restructured to DMA map only the parts of rq_res that do not contain a result payload. This change has been tested to confirm that it does not cause a regression in the no Write chunk and single Write chunk cases. Multiple Write chunks have not been tested. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30svcrdma: Support multiple write chunks when pulling upChuck Lever
When counting the number of SGEs needed to construct a Send request, do not count result payloads. And, when copying the Reply message into the pull-up buffer, result payloads are not to be copied to the Send buffer. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30svcrdma: Use parsed chunk lists to encode Reply transport headersChuck Lever
Refactor: Instead of re-parsing the ingress RPC Call transport header when constructing the egress RPC Reply transport header, use the new parsed Write list and Reply chunk, which are version- agnostic and already XDR decoded. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30svcrdma: Use parsed chunk lists to construct RDMA WritesChuck Lever
Refactor: Instead of re-parsing the ingress RPC Call transport header when constructing RDMA Writes, use the new parsed chunk lists for the Write list and Reply chunk, which are version-agnostic and already XDR-decoded. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30svcrdma: Use parsed chunk lists to detect reverse direction repliesChuck Lever
Refactor: Don't duplicate header decoding smarts here. Instead, use the new parsed chunk lists. Note that the XID sanity test is also removed. The XID is already looked up by the cb handler, and is rejected if it's not recognized. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30svcrdma: Add a "parsed chunk list" data structureChuck Lever
This simple data structure binds the location of each data payload inside of an RPC message to the chunk that will be used to push it to or pull it from the client. There are several benefits to this small additional overhead: * It enables support for more than one chunk in incoming Read and Write lists. * It translates the version-specific on-the-wire format into a generic in-memory structure, enabling support for multiple versions of the RPC/RDMA transport protocol. * It enables the server to re-organize a chunk list if it needs to adjust where Read chunk data lands in server memory without altering the contents of the XDR-encoded Receive buffer. Construction of these lists is done while sanity checking each incoming RPC/RDMA header. Subsequent patches will make use of the generated data structures. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30svcrdma: Post RDMA Writes while XDR encoding repliesChuck Lever
The only RPC/RDMA ordering requirement between RDMA Writes and RDMA Sends is that the responder must post the Writes on the Send queue before posting the Send that conveys the RPC Reply for that Write payload. The Linux NFS server implementation now has a transport method that can post result Payload Writes earlier than svc_rdma_sendto: ->xpo_result_payload() This gets RDMA Writes going earlier so they are more likely to be complete at the remote end before the Send completes. Some care must be taken with pulled-up Replies. We don't want to push the Write chunk and then send the same payload data via Send. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30SUNRPC: Rename svc_encode_read_payload()Chuck Lever
Clean up: "result payload" is a less confusing name for these payloads. "READ payload" reflects only the NFS usage. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30SUNRPC: Adjust synopsis of xdr_buf_subsegment()Chuck Lever
Clean up: This enables xdr_buf_subsegment()'s callers to pass in a const pointer to that buffer. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-11-30dt-bindings: interconnect: sdm845: Add IDs for the QUP portsGeorgi Djakov
The QUP ports exist in the topology, but are not exposed as an endpoints in DT. Fix this by creating IDs and attach them to their NoCs, so that the various QUP drivers (i2c/spi/uart etc.) are able to request their interconnect paths and scale their bandwidth. Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org> Link: https://lore.kernel.org/r/20201105135211.7160-1-georgi.djakov@linaro.org Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2020-11-30Merge tag 'v5.10-next-soc' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/matthias.bgg/linux into arm/drivers power-domains: - add support for new power domain driver. - add support for mt8183 and mt8192 devapc: - add support for the devapc device found on mt6779 to identify of malicious bus accesses from a controller to a device mmsys: - move DDP routing IDs into the driver cmdq: - drop timeout handler support as not usefull scpsys: - print warning on theoretical error * tag 'v5.10-next-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/matthias.bgg/linux: (21 commits) soc: mediatek: mmsys: Use devm_platform_ioremap_resource() soc / drm: mediatek: Move DDP component defines into mtk-mmsys.h soc: mediatek: add mt6779 devapc driver dt-bindings: devapc: add bindings for mtk-devapc soc / drm: mediatek: cmdq: Remove timeout handler in helper function soc: mediatek: pm-domains: Add support for mt8192 soc: mediatek: pm-domains: Add default power off flag soc: mediatek: pm-domains: Add support for mt8183 soc: mediatek: pm-domains: Allow bus protection to ignore clear ack soc: mediatek: pm-domains: Add subsystem clocks soc: mediatek: pm-domains: Add extra sram control soc: mediatek: pm-domains: Add SMI block as bus protection block soc: mediatek: pm_domains: Make bus protection generic soc: mediatek: pm-domains: Add bus protection protocol soc: mediatek: Add MediaTek SCPSYS power domains dt-bindings: power: Add MT8192 power domains dt-bindings: power: Add MT8183 power domains dt-bindings: power: Add bindings for the Mediatek SCPSYS power domains controller mfd: syscon: Add syscon_regmap_lookup_by_phandle_optional() function. MAINTAINERS: change mediatek wiki page ... Link: https://lore.kernel.org/r/b03fe343-e183-c6f3-f2dc-4c58aae3146b@gmail.com Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-11-30Merge tag 'at91-drivers-5.11' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/at91/linux into arm/drivers AT91 drivers for 5.11: - add sam9x60 SiP IDs - at91_cf cleanups * tag 'at91-drivers-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/at91/linux: pcmcia: at91_cf: remove platform data support pcmcia: at91_cf: move definitions locally ARM: at91: sam9x60 SiP types added to soc description Link: https://lore.kernel.org/r/20201127214140.GA1688544@piout.net Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-11-30Merge branch 'for-5.10' of ↵Mark Brown
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-5.11
2020-11-30Merge series "ASoC: SOF: Intel: fix ICL boot sequence" from Kai Vehmanen ↵Mark Brown
<kai.vehmanen@linux.intel.com>: Series introducing a modified boot sequence for the Intel Ice Lake platform. While no bugs are currently open for this, the current DSP boot implementation does not follow the full programming sequence. This patchset is the first instance where SOF driver uses data in the extended manifest (part of the firmware binary), to influence the boot process. IPC cannot be used to get this information, as it is already needed for early boot. This change is backwards compatible with old firmware versions, where extended manifest is not available. Fred Oh (5): ASoC: SOF: ops: add parse_platform_ext_manifest() op ASoC: SOF: Intel: hda: define parse_platform_ext_manifest op ASoC: SOF: ext_manifest: parse cavs extra config data elem ASoC: SOF: ops: modify the signature of stall op ASoC: SOF: Intel: hda: add sof_icl_ops for ICL platforms include/sound/sof/ext_manifest.h | 1 + sound/soc/sof/intel/Makefile | 2 +- sound/soc/sof/intel/apl.c | 3 + sound/soc/sof/intel/cnl.c | 19 +--- sound/soc/sof/intel/ext_manifest.h | 35 +++++++ sound/soc/sof/intel/hda-loader.c | 100 ++++++++++++++++++++ sound/soc/sof/intel/hda.h | 11 +++ sound/soc/sof/intel/icl.c | 145 +++++++++++++++++++++++++++++ sound/soc/sof/intel/tgl.c | 3 + sound/soc/sof/loader.c | 3 + sound/soc/sof/ops.h | 14 ++- sound/soc/sof/sof-pci-dev.c | 2 +- sound/soc/sof/sof-priv.h | 7 +- 13 files changed, 324 insertions(+), 21 deletions(-) create mode 100644 sound/soc/sof/intel/ext_manifest.h create mode 100644 sound/soc/sof/intel/icl.c -- 2.28.0
2020-11-30pNFS/flexfiles: Fix array overflow when flexfiles mirroring is enabledTrond Myklebust
If the flexfiles mirroring is enabled, then the read code expects to be able to set pgio->pg_mirror_idx to point to the data server that is being used for this particular read. However it does not change the pg_mirror_count because we only need to send a single read. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2020-11-30ASoC: add soc-jack.hKuninori Morimoto
ALSA SoC has soc-jack.c, but doesn't have soc-jack.h. This patch creates new soc-jack.h and moves snd_soc_jack_xxx() from soc.h. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87wny3u3zg.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-11-30ASoC: soc-core: tidyup jack.hKuninori Morimoto
soc-core.c don't need sound/jack.h anymore, but asoc.h needs it. This patch fixup header magic. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87y2iju3zm.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-11-30genirq/irqdomain: Add an irq_create_mapping_affinity() functionLaurent Vivier
There is currently no way to convey the affinity of an interrupt via irq_create_mapping(), which creates issues for devices that expect that affinity to be managed by the kernel. In order to sort this out, rename irq_create_mapping() to irq_create_mapping_affinity() with an additional affinity parameter that can be passed down to irq_domain_alloc_descs(). irq_create_mapping() is re-implemented as a wrapper around irq_create_mapping_affinity(). No functional change. Fixes: e75eafb9b039 ("genirq/msi: Switch to new irq spreading infrastructure") Signed-off-by: Laurent Vivier <lvivier@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Greg Kurz <groug@kaod.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20201126082852.1178497-2-lvivier@redhat.com
2020-11-30KVM: arm64: Delay the polling of the GICR_VPENDBASER.Dirty bitShenming Lu
In order to reduce the impact of the VPT parsing happening on the GIC, we can split the vcpu reseidency in two phases: - programming GICR_VPENDBASER: this still happens in vcpu_load() - checking for the VPT parsing to be complete: this can happen on vcpu entry (in kvm_vgic_flush_hwstate()) This allows the GIC and the CPU to work in parallel, rewmoving some of the entry overhead. Suggested-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Shenming Lu <lushenming@huawei.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20201128141857.983-3-lushenming@huawei.com
2020-11-30habanalabs: Add CB IOCTL opcode to retrieve CB informationTomer Tayar
Add a new CB IOCTL opcode that enables a user to query about a CB and get its usage count. Signed-off-by: Tomer Tayar <ttayar@habana.ai> Reviewed-by: Oded Gabbay <ogabbay@kernel.org> Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
2020-11-30habanalabs: add support for cs with timestampOfir Bitton
add support for user to request a timestamp upon cs completion. Signed-off-by: Ofir Bitton <obitton@habana.ai> Reviewed-by: Oded Gabbay <ogabbay@kernel.org> Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
2020-11-30habanalabs: indicate to user that a cs is goneOfir Bitton
We want to indicate to the user that a certain command submission is finished long time ago and it is no longer in database. This means no further information regarding this cs can be obtained. Signed-off-by: Ofir Bitton <obitton@habana.ai> Reviewed-by: Oded Gabbay <ogabbay@kernel.org> Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
2020-11-30habanalabs: fetch pll frequency from firmwareAlon Mizrahi
Once firmware security is enabled, driver must fetch pll frequencies through the firmware message interface instead of reading the registers directly. Signed-off-by: Alon Mizrahi <amizrahi@habana.ai> Reviewed-by: Oded Gabbay <ogabbay@kernel.org> Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
2020-11-30habanalabs: add 'needs reset' state in driverOfir Bitton
The new state indicates that device should be reset in order to re-gain funcionality. This unique state can occur if reset_on_lockup is disabled and an actual lockup has occurred. Signed-off-by: Ofir Bitton <obitton@habana.ai> Reviewed-by: Oded Gabbay <ogabbay@kernel.org> Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
2020-11-30habanalabs: fix cs counters structurefarah kassabri
Fix cs counters structure in uapi to be one flat structure instead of two instances of the same other structure. use atomic read/increment for context counters so we could use one structure for both aggregated and context counters. Signed-off-by: farah kassabri <fkassabri@habana.ai> Reviewed-by: Oded Gabbay <ogabbay@kernel.org> Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
2020-11-30habanalabs: sync stream collective supportOfir Bitton
Implement sync stream collective for GAUDI. Need to allocate additional resources for that and add ctx_fini() to clean up those resources. Signed-off-by: Ofir Bitton <obitton@habana.ai> Reviewed-by: Oded Gabbay <ogabbay@kernel.org> Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
2020-11-30habanalabs/gaudi: Set DMA5 QMAN internalOfir Bitton
DMA5 QMAN is designated to be used for reduction process, hence it will be no longer configured as external queue. Signed-off-by: Ofir Bitton <obitton@habana.ai> Reviewed-by: Oded Gabbay <ogabbay@kernel.org> Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
2020-11-30habanalabs: sync stream collective infrastructureOfir Bitton
Define new API for collective wait support and modify sync stream common flow. In addition add kernel CB allocation support for internal queues. Signed-off-by: Ofir Bitton <obitton@habana.ai> Reviewed-by: Oded Gabbay <ogabbay@kernel.org> Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
2020-11-30habanalabs: use enum for CB allocation optionsTal Cohen
In the future there will be situations where queues can accept either kernel allocated CBs or user allocated CBs, depending on different states. Therefore, instead of using a boolean variable of kernel/user allocated CB, we need to use a bitmask to indicate that, which will allow to combine the two options. Add a flag to the uapi so the user will be able to indicate whether the CB was allocated by kernel or by user. Of course the driver validates that. Signed-off-by: Tal Cohen <talcohen@habana.ai> Reviewed-by: Oded Gabbay <ogabbay@kernel.org> Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
2020-11-30mtd: nand: ecc-bch: Stop using raw NAND structuresMiquel Raynal
This code is meant to be reused by the SPI-NAND core. Now that the driver has been cleaned and reorganized, use a generic ECC engine object to store the driver's data instead of accessing members of the nand_chip structure. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200929230124.31491-9-miquel.raynal@bootlin.com
2020-11-30mtd: nand: ecc-bch: Update the prototypes to be more genericMiquel Raynal
These functions must be usable by the main NAND core, so their names must be technology-agnostic as well as the parameters. Hence, we pass a generic nand_device instead of a raw nand_chip structure. As it seems that changing the raw NAND functions to always pass a generic NAND device is a lost of time, we prefer to create dedicated raw NAND wrappers that will be useful in the near future to do the translation. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200929230124.31491-8-miquel.raynal@bootlin.com
2020-11-30mtd: nand: ecc-bch: Drop mtd_nand_has_bch()Miquel Raynal
Like for any other compilation option, use the IS_ENABLED() macro instead of hardcoding it. By droping this helper we can get rid of the BCH header in nandsim.c. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200929230124.31491-7-miquel.raynal@bootlin.com
2020-11-30mtd: nand: ecc-bch: Return only valid error codesMiquel Raynal
When a function is not available, returning -ENOTSUPP makes much more sense than returning -1. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200929230124.31491-6-miquel.raynal@bootlin.com
2020-11-30mtd: nand: ecc-bch: Stop exporting the private structureMiquel Raynal
The NAND BCH control structure has nothing to do outside of this driver, all users of the nand_bch_init/free() functions just save it to chip->ecc.priv so do it in this driver directly and return a regular error code instead. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200929230124.31491-5-miquel.raynal@bootlin.com
2020-11-30mtd: nand: ecc-bch: Move BCH code to the generic NAND layerMiquel Raynal
BCH ECC code might be later re-used by the SPI NAND layer. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200929230124.31491-3-miquel.raynal@bootlin.com
2020-11-30mtd: nand: ecc: Add an I/O request tweaking mechanismMiquel Raynal
Currently, BCH and Hamming engine are sharing the same tweaking/restoring I/O mechanism: they need the I/O request to fully cover the main/OOB area. Let's make this code generic as sharing the code between two drivers is already a win. Maybe other ECC engine drivers will need it too. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20200929230124.31491-2-miquel.raynal@bootlin.com
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