Serge Semin
190bce292b
dmaengine: dw: Add DMA-channels mask cell support ...
[ Upstream commit e8ee6c8cb61b676f1a2d6b942329e98224bd8ee9 ]
DW DMA IP-core provides a way to synthesize the DMA controller with
channels having different parameters like maximum burst-length,
multi-block support, maximum data width, etc. Those parameters both
explicitly and implicitly affect the channels performance. Since DMA slave
devices might be very demanding to the DMA performance, let's provide a
functionality for the slaves to be assigned with DW DMA channels, which
performance according to the platform engineer fulfill their requirements.
After this patch is applied it can be done by passing the mask of suitable
DMA-channels either directly in the dw_dma_slave structure instance or as
a fifth cell of the DMA DT-property. If mask is zero or not provided, then
there is no limitation on the channels allocation.
For instance Baikal-T1 SoC is equipped with a DW DMAC engine, which first
two channels are synthesized with max burst length of 16, while the rest
of the channels have been created with max-burst-len=4. It would seem that
the first two channels must be faster than the others and should be more
preferable for the time-critical DMA slave devices. In practice it turned
out that the situation is quite the opposite. The channels with
max-burst-len=4 demonstrated a better performance than the channels with
max-burst-len=16 even when they both had been initialized with the same
settings. The performance drop of the first two DMA-channels made them
unsuitable for the DW APB SSI slave device. No matter what settings they
are configured with, full-duplex SPI transfers occasionally experience the
Rx FIFO overflow. It means that the DMA-engine doesn't keep up with
incoming data pace even though the SPI-bus is enabled with speed of 25MHz
while the DW DMA controller is clocked with 50MHz signal. There is no such
problem has been noticed for the channels synthesized with
max-burst-len=4.
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Link: https://lore.kernel.org/r/20200731200826.9292-6-Sergey.Semin@baikalelectronics.ru
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-10-29 09:58:09 +01:00
can: can_dropped_invalid_skb(): ensure an initialized headroom in outgoing CAN sk_buffs
2020-01-14 20:08:28 +01:00
libceph: fix alloc_msg_with_page_vector() memory leaks
2020-04-02 15:11:02 +02:00
net: dsa: tag_8021q: replace dsa_8021q_remove_header with __skb_vlan_pop
2020-04-01 11:01:34 +02:00
gpio: add gpiod_toggle_active_low()
2020-02-19 19:53:09 +01:00
iio: core: remove extra semi-colon from devm_iio_device_register() macro
2020-04-29 16:33:12 +02:00
Input: elan_i2c - add more hardware ID for Lenovo laptops
2020-07-22 09:33:13 +02:00
mfd: stmfx: Disable IRQ in suspend to avoid spurious interrupt
2020-06-24 17:50:33 +02:00
net/mlx5: Avoid possible free of command entry while timeout comp handler
2020-10-14 10:33:04 +02:00
mmc: core: Fix size overflow for mmc partitions
2020-10-01 13:17:20 +02:00
netfilter: conntrack: allow sctp hearbeat after connection re-use
2020-09-17 13:47:45 +02:00
dmaengine: dw: Add DMA-channels mask cell support
2020-10-29 09:58:09 +01:00
ARM: OMAP2+: SmartReflex: add omap_sr_pdata definition
2020-02-01 09:34:49 +00:00
net: qed: Disable aRFS for NPAR and 100G
2020-10-01 13:18:18 +02:00
raid6/test: fix a compilation warning
2020-02-24 08:36:47 +01:00
regulator fix for "regulator: core: Add regulator_is_equal() helper"
2020-02-11 04:35:55 -08:00
mm, oom_adj: don't loop through tasks in __set_oom_adj when not necessary
2020-10-29 09:57:45 +01:00
svcrdma: Fix backchannel return code
2020-10-01 13:18:01 +02:00
usb: host: ehci-platform: add a quirk to avoid stuck
2020-06-24 17:50:44 +02:00
ACPI: PM: Add acpi_[un]register_wakeup_handler()
2020-04-13 10:48:08 +02:00
ata: libahci_platform: Export again ahci_platform_<en/dis>able_phys()
2020-01-09 10:19:59 +01:00
bdi: add a ->dev_name field to struct backing_dev_info
2020-05-14 07:58:30 +02:00
bdi: move bdi_dev_name out of line
2020-05-14 07:58:30 +02:00
exec: Add exec_update_mutex to replace cred_guard_mutex
2020-10-01 13:17:47 +02:00
block: add bio_truncate to fix guard_bio_eod
2020-01-09 10:19:54 +01:00
bitfield.h: don't compile-time validate _val in FIELD_FIT
2020-08-19 08:16:28 +02:00
include/linux/bitops.h: avoid clang shift-count-overflow warnings
2020-06-24 17:50:39 +02:00
blk-mq-debugfs: update blk_queue_flag_name[] accordingly for new flags
2020-07-22 09:32:52 +02:00
blktrace: Protect q->blk_trace with RCU
2020-03-05 16:43:52 +01:00
bpf: sockmap: Require attach_bpf_fd when detaching a program
2020-08-07 09:34:02 +02:00
bpf: Limit caller's stack depth 256 for subprogs with tailcalls
2020-10-29 09:58:06 +01:00
ext4: use non-movable memory for superblock readahead
2020-04-23 10:36:15 +02:00
block: allow for_each_bvec to support zero len bvec
2020-09-09 19:12:34 +02:00
cgroup: Fix sock_cgroup_data on big-endian.
2020-07-22 09:32:50 +02:00
cgroup: fix cgroup_sk_alloc() for sk_clone_lock()
2020-07-22 09:32:49 +02:00
futex: Move futex exit handling into futex code
2019-11-29 10:10:08 +01:00
x86: Fix early boot crash on gcc-10, third try
2020-05-20 08:20:34 +02:00
cpu/hotplug: Ignore pm_wakeup_pending() for disable_nonboot_cpus()
2020-04-17 10:50:11 +02:00
cpufreq: Avoid creating excessively large stack frames
2020-02-11 04:35:25 -08:00
padata: validate cpumask without removed CPU during offline
2020-02-24 08:36:34 +01:00
dax: Fix compilation for CONFIG_DAX && !CONFIG_FS_DAX
2020-09-23 12:40:47 +02:00
debugfs: Fix !DEBUG_FS debugfs_create_automount
2020-10-01 13:17:21 +02:00
thermal: devfreq_cooling: inline all stubs for CONFIG_DEVFREQ_THERMAL=n
2020-04-17 10:50:09 +02:00
dm integrity: fix integrity recalculation that is improperly skipped
2020-07-29 10:18:45 +02:00
dmabuf: use spinlock to access dmabuf->name
2020-07-29 10:18:29 +02:00
dma-direct: check for overflows on 32 bit DMA addresses
2020-01-04 19:17:24 +01:00
dma-mapping: fix handling of dma-ranges for reserved memory (again)
2020-01-04 19:17:00 +01:00
dmaengine: Store module owner in dma_device struct
2020-02-24 08:36:40 +01:00
iommu/vt-d: Silence RCU-list debugging warnings
2020-04-01 11:01:53 +02:00
efi: provide empty efi_enter_virtual_mode implementation
2020-09-03 11:26:49 +02:00
elfnote: mark all .note sections SHF_ALLOC
2020-06-17 16:40:20 +02:00
eventfd: track eventfd_signal() recursion depth
2020-02-11 04:35:37 -08:00
f2fs: Add a new CP flag to help fsck fix resize SPO issues
2020-04-23 10:36:33 +02:00
fbmem: pull fbcon_update_vcs() out of fb_set_var()
2020-09-03 11:27:09 +02:00
bpf: Check correct cred for CAP_SYSLOG in bpf_dump_raw_ok()
2020-07-16 08:16:45 +02:00
Fonts: Support FONT_EXTRA_WORDS macros for built-in fonts
2020-10-14 10:32:56 +02:00
writeback: Avoid skipping inode writeback
2020-09-03 11:27:04 +02:00
fsnotify: replace inode pointer with an object id
2020-05-14 07:58:30 +02:00
futex: Fix inode life-time issue
2020-03-25 08:25:58 +01:00
block/diskstats: more accurate approximation of io_ticks for slow disks
2020-10-07 08:01:29 +02:00
HID: core: Sanitize event code and type when mapping input
2020-09-05 11:22:49 +02:00
hrtimer: Annotate lockless access to timer->state
2020-01-04 19:18:41 +01:00
mm/hugetlb: fix build failure with HUGETLB_PAGE but not HUGEBTLBFS
2020-04-23 10:36:36 +02:00
Drivers: hv: vmbus: Ignore CHANNELMSG_TL_CONNECT_RESULT(23)
2020-08-11 15:33:38 +02:00
i2c: algo: pca: Reapply i2c bus settings after reset
2020-09-23 12:40:38 +02:00
XArray updates for 5.4
2019-11-08 08:46:49 -08:00
ieee80211: Fix incorrect mask for default PE duration
2020-06-03 08:21:36 +02:00
macvlan: do not assume mac_header is set in macvlan_broadcast()
2020-01-12 12:21:46 +01:00
vlan: consolidate VLAN parsing code and limit max parsing depth
2020-07-22 09:32:49 +02:00
inet_diag: return classid for all socket types
2020-03-18 07:17:38 +01:00
iommu/vt-d: Enforce PASID devTLB field mask
2020-08-21 13:05:34 +02:00
iommu/vt-d: Fix compile warning from intel-svm.h
2020-02-28 17:22:26 +01:00
io-mapping: indicate mapping failure
2020-07-29 10:18:44 +02:00
lib: devres: add a helper function for ioremap_uc
2020-05-10 10:31:30 +02:00
block: Fix use-after-free issue accessing struct io_cq
2020-04-17 10:50:04 +02:00
/dev/mem: Revoke mappings when a driver claims the region
2020-06-24 17:50:35 +02:00
ipmi: Don't allow device module unload when in use
2019-12-31 16:44:14 +01:00
genirq/affinity: Make affinity setting if activated opt-in
2020-08-21 13:05:20 +02:00
genirq/irqdomain: Make sure all irq domain flags are distinct
2020-02-28 17:22:20 +01:00
jbd2: clean __jbd2_journal_abort_hard() and __journal_abort_soft()
2020-06-24 17:50:48 +02:00
kallsyms: Refactor kallsyms_show_value() to take cred
2020-07-16 08:16:44 +02:00
kernfs: fix ino wrap-around detection
2019-12-13 08:42:53 +01:00
KEYS: Don't write out to userspace while holding key semaphore
2020-04-23 10:36:45 +02:00
kgdb: Fix spurious true from in_dbg_master()
2020-06-22 09:31:03 +02:00
mm: khugepaged: recalculate min_free_kbytes after memory hotplug as expected by khugepaged
2020-10-14 10:33:05 +02:00
kprobes: tracing/kprobes: Fix to kill kprobes on initmem after boot
2020-10-01 13:18:23 +02:00
KVM: x86: Fix APIC page invalidation race
2020-06-17 16:40:26 +02:00
x86/kvm: Cache gfn to pfn translation
2020-02-11 04:35:40 -08:00
ata: make qc_prep return ata_completion_errors
2020-10-01 13:18:26 +02:00
libfdt: define INT32_MAX and UINT32_MAX in libfdt_env.h
2020-01-04 19:18:28 +01:00
rcu: Use WRITE_ONCE() for assignments to ->pprev for hlist_nulls
2020-02-24 08:36:45 +01:00
include/linux/log2.h: add missing () around n in roundup_pow_of_two()
2020-09-09 19:12:29 +02:00
mm, memcg: fix inconsistent oom event behavior
2020-05-20 08:20:27 +02:00
mm/memory_hotplug: fix try_offline_node()
2019-11-15 18:34:00 -08:00
mm/memory_hotplug: shrink zones when offlining memory
2020-01-09 10:19:56 +01:00
memstick: Skip allocating card when removing host
2020-10-07 08:01:25 +02:00
rfkill: allocate static minor
2019-12-13 08:43:18 +01:00
mm: replace memmap_context by meminit_context
2020-10-07 08:01:29 +02:00
mm: thp: handle page cache THP correctly in PageTransCompoundMap
2019-11-06 08:28:58 -08:00
mm: replace memmap_context by meminit_context
2020-10-07 08:01:29 +02:00
Input: add SW_MACHINE_COVER
2020-07-29 10:18:36 +02:00
net: introduce helper sendpage_ok() in include/linux/net.h
2020-10-14 10:33:00 +02:00
net: core: reduce recursion limit value
2020-06-30 15:36:44 -04:00
netfilter: avoid ipv6 -> nf_defrag_ipv6 module dependency
2020-09-03 11:26:58 +02:00
nfs: set invalid blocks after NFSv4 writes
2020-06-24 17:50:44 +02:00
NFS: Fix races nfs_page_group_destroy() vs nfs_destroy_unlinked_subrequests()
2020-10-01 13:17:52 +02:00
NFSv4.1: fix handling of backchannel binding in BIND_CONN_TO_SESSION
2020-05-06 08:15:05 +02:00
mm: don't rely on system state to detect hot-plug operations
2020-10-07 08:01:30 +02:00
nvme-fc: Revert "add module to ops template to allow module references"
2020-04-17 10:50:10 +02:00
nvme: introduce "Command Aborted By host" status code
2019-12-31 16:44:40 +01:00
nvmem: core: fix nvmem_cell_write inline function
2019-12-31 16:44:43 +01:00
mm, oom_adj: don't loop through tasks in __set_oom_adj when not necessary
2020-10-29 09:57:45 +01:00
overflow: Include header file with SIZE_MAX declaration
2020-10-29 09:57:51 +01:00
padata: add separate cpuhp node for CPUHP_PADATA_DEAD
2020-06-17 16:40:22 +02:00
page-flags: fix a crash at SetPageError(THP_SWAP)
2020-03-25 08:25:58 +01:00
mm/page_owner: change split_page_owner to take a count
2020-10-29 09:57:52 +01:00
PCI: endpoint: Fix for concurrent memory allocation in OB address region
2020-04-17 10:50:11 +02:00
PCI/IOV: Mark VFs as not implementing PCI_COMMAND_MEMORY
2020-10-29 09:57:54 +01:00
x86/amd_nb: Add AMD family 17h model 60h PCI IDs
2020-06-22 09:31:17 +02:00
percpu: Separate decrypted varaibles anytime encryption can be enabled
2020-02-11 04:35:44 -08:00
percpu_counter: fix a data race at vm_committed_as
2020-04-23 10:36:37 +02:00
net: phy: fix MDIO bus PM PHY resuming
2020-03-18 07:17:46 +01:00
driver code: clarify and fix platform device DMA mask allocation
2020-03-18 07:17:56 +01:00
PM / QoS: Redefine FREQ_QOS_MAX_DEFAULT_VALUE to S32_MAX
2019-12-21 11:04:31 +01:00
pnp: Use list_for_each_entry() instead of open coding
2020-05-20 08:20:27 +02:00
ptp: fix the race between the release of ptp_clock and cdev
2020-01-04 19:18:48 +01:00
random32: move the pseudo-random 32-bit definitions to prandom.h
2020-08-07 09:34:01 +02:00
printk: queue wake_up_klogd irq_work only if per-CPU areas are ready
2020-05-02 08:48:42 +02:00
fs/quota: handle overflows of sysctl fs.quota.* and report as unsigned long
2020-01-04 19:17:25 +01:00
quota: Check that quota is not dirty before release
2019-12-17 19:56:43 +01:00
radix tree: Remove radix_tree_iter_find
2019-11-01 22:26:34 -04:00
random32: move the pseudo-random 32-bit definitions to prandom.h
2020-08-07 09:34:01 +02:00
rcu: Use WRITE_ONCE() for assignments to ->pprev for hlist_nulls
2020-02-24 08:36:45 +01:00
rhashtable: Fix unprotected RCU dereference in __rht_ptr
2020-08-05 09:59:47 +02:00
signal: Extend exec_id to 64bits
2020-04-17 10:50:12 +02:00
powerpc/xmon: Restrict when kernel is locked down
2020-06-07 13:18:49 +02:00
vt: selection, introduce vc_is_sel
2020-04-02 15:11:00 +02:00
seqlock: Require WRITE_ONCE surrounding raw_seqcount_barrier
2020-10-01 13:17:25 +02:00
x86/{mce,mm}: Unmap the entire page if the whole page is affected and poisoned
2020-06-17 16:40:31 +02:00
skbuff: fix a data race in skb_queue_len()
2020-10-01 13:17:31 +02:00
bpf: sockmap: Require attach_bpf_fd when detaching a program
2020-08-07 09:34:02 +02:00
net: increase SOMAXCONN to 4096
2019-10-31 14:01:40 -07:00
string.h: fix incompatibility between FORTIFY_SOURCE and KASAN
2020-06-22 09:31:12 +02:00
ACPI: PM: s2idle: Avoid possible race related to the EC GPE
2020-02-19 19:52:56 +01:00
uapi: rename ext2_swab() to swab() and share globally in swab.h
2020-04-13 10:48:07 +02:00
include/linux/swapops.h: correct guards for non_swap_entry()
2020-04-23 10:36:37 +02:00
tcp: allow at most one TLP probe per flight
2020-07-31 18:39:31 +02:00
uaccess: disallow > INT_MAX copy sizes
2020-01-04 19:18:42 +01:00
tcp: fix rejected syncookies due to stale timestamps
2019-12-18 16:08:43 +01:00
bpf: Fix incorrect verifier simulation of ARSH under ALU32
2020-01-23 08:22:44 +01:00
tpm: Unify the mismatching TPM space buffer sizes
2020-08-19 08:16:27 +02:00
tpm: Require that all digests are present in TCG_PCR_EVENT2 structures
2020-08-19 08:15:57 +02:00
tracepoint: Mark __tracepoint_string's __used
2020-08-19 08:15:53 +02:00
gcc-10 warnings: fix low-hanging fruit
2020-05-20 08:20:29 +02:00
uaccess: Add non-pagefault user-space write function
2020-01-17 19:48:40 +01:00
net: be more gentle about silly gso requests coming from user
2020-06-10 20:24:55 +02:00
vsock/virtio: add transport parameter to the virtio_transport_reset_no_sock()
2020-10-07 08:01:24 +02:00
vmalloc: fix remap_vmalloc_range() bounds checks
2020-04-29 16:33:14 +02:00
vt: switch vt_dont_switch to bool
2020-04-02 15:11:00 +02:00
xarray: Fix early termination of xas_for_each_marked
2020-04-17 10:50:18 +02:00
xattr: break delegations in {set,remove}xattr
2020-08-11 15:33:39 +02:00
