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Harini Katakam 404cd086f2 net: macb: Allocate valid memory for TX and RX BD prefetch 
GEM version in ZynqMP and most versions greater than r1p07 supports
TX and RX BD prefetch. The number of BDs that can be prefetched is a
HW configurable parameter. For ZynqMP, this parameter is 4.

When GEM DMA is accessing the last BD in the ring, even before the
BD is processed and the WRAP bit is noticed, it will have prefetched
BDs outside the BD ring. These will not be processed but it is
necessary to have accessible memory after the last BD. Especially
in cases where SMMU is used, memory locations immediately after the
last BD may not have translation tables triggering HRESP errors. Hence
always allocate extra BDs to accommodate for prefetch.
The value of tx/rx bd prefetch for any given SoC version is:
2 ^ (corresponding field in design config 10 register).
(value of this field >= 1)

Added a capability flag so that older IP versions that do not have
DCFG10 or this prefetch capability are not affected.

Signed-off-by: Harini Katakam <harini.katakam@xilinx.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-07 20:54:25 +09:00
..
accessibility
acpi acpi: Add helper for deactivating memory region 2018-06-25 21:30:12 +08:00
amba Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm 2018-06-06 13:49:25 -07:00
android treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
ata treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
atm atm: zatm: Fix potential Spectre v1 2018-06-30 21:24:18 +09:00
auxdisplay treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
base PM / Domains: Rename opp_node to np 2018-06-25 09:41:37 +02:00
bcma dma-mapping updates for 4.18: 2018-06-04 10:58:12 -07:00
block for-linus-20180629 2018-06-30 10:47:46 -07:00
bluetooth bluetooth: hci_nokia: Don't include linux/unaligned/le_struct.h directly. 2018-06-17 08:38:55 +09:00
bus - Error path bug fix for overflow tests (Dan) 2018-06-12 18:28:00 -07:00
cdrom treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
char Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL 2018-06-28 10:40:47 -07:00
clk docs: Fix some broken references 2018-06-15 18:10:01 -03:00
clocksource Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-06-24 19:16:42 +08:00
connector Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-06-06 18:39:49 -07:00
cpufreq cpufreq: qcom-kryo: Fix error handling in probe() 2018-06-24 23:00:36 +02:00
cpuidle powerpc updates for 4.18 2018-06-07 10:23:33 -07:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2018-06-24 06:31:54 +08:00
dax dax: check for QUEUE_FLAG_DAX in bdev_dax_supported() 2018-06-28 16:06:08 -04:00
dca
devfreq treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
dio
dma fix a series of Documentation/ broken file name references 2018-06-15 18:10:01 -03:00
dma-buf
edac treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
eisa
extcon treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
firewire treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
firmware efi/libstub/tpm: Initialize efi_physical_addr_t vars to zero for mixed mode 2018-06-22 10:58:27 +02:00
fmc treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
fpga
fsi
gpio treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
gpu for-linus-20180629 2018-06-30 10:47:46 -07:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2018-06-20 16:42:39 +09:00
hsi
hv treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
hwmon hwmon: (nct6775) Fix loop limit 2018-06-16 16:40:36 -07:00
hwspinlock hwspinlock updates for v4.18 2018-06-11 12:09:19 -07:00
hwtracing treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
i2c i2c: gpio: initialize SCL to HIGH again 2018-06-29 08:23:12 +02:00
ide treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
idle
iio iio: imu: inv_mpu6050: Fix probe() failure on older ACPI based machines 2018-06-24 14:50:52 +01:00
infiniband mlx5-fixes-2018-06-26 2018-06-28 16:21:35 +09:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2018-06-27 09:16:53 -07:00
iommu - Error path bug fix for overflow tests (Dan) 2018-06-12 18:28:00 -07:00
ipack treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
irqchip irqchip/gic-v3-its: Fix reprogramming of redistributors on CPU hotplug 2018-06-22 14:22:02 +02:00
isdn Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL 2018-06-28 10:40:47 -07:00
leds treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
lightnvm for-linus-20180623 2018-06-24 06:33:54 +08:00
macintosh powerpc updates for 4.18 2018-06-07 10:23:33 -07:00
mailbox treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
mcb
md Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md 2018-07-02 12:40:59 -07:00
media bpf: fix attach type BPF_LIRC_MODE2 dependency wrt CONFIG_CGROUP_BPF 2018-06-26 11:28:38 +02:00
memory - Error path bug fix for overflow tests (Dan) 2018-06-12 18:28:00 -07:00
memstick treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
message treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
mfd Merge branch 'i2c/for-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2018-06-14 16:21:46 +09:00
misc Merge branch 'i2c/for-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2018-06-14 16:21:46 +09:00
mmc treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
mtd mtd: rawnand: denali_dt: set clk_x_rate to 200 MHz unconditionally 2018-06-22 18:47:56 +02:00
mux
net net: macb: Allocate valid memory for TX and RX BD prefetch 2018-07-07 20:54:25 +09:00
nfc NFC: pn533: Fix wrong GFP flag usage 2018-06-25 21:36:45 +08:00
ntb - Error path bug fix for overflow tests (Dan) 2018-06-12 18:28:00 -07:00
nubus Char/Misc driver patches for 4.18-rc1 2018-06-05 16:20:22 -07:00
nvdimm pmem: only set QUEUE_FLAG_DAX for fsdax mode 2018-06-28 16:05:59 -04:00
nvme nvme-rdma: fix possible double free of controller async event buffer 2018-06-28 16:29:54 +02:00
nvmem treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
of - Error path bug fix for overflow tests (Dan) 2018-06-12 18:28:00 -07:00
opp PM / OPP: Update voltage in case freq == old_freq 2018-06-19 15:53:32 +05:30
oprofile treewide: Use array_size() in vmalloc() 2018-06-12 16:19:22 -07:00
parisc dma-mapping updates for 4.18: 2018-06-04 10:58:12 -07:00
parport docs: Fix some broken references 2018-06-15 18:10:01 -03:00
pci PCI: controller: Move PCI_DOMAINS selection to arch Kconfig 2018-06-26 15:37:37 -05:00
pcmcia treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
perf drivers/perf: xgene_pmu: Fix IOB SLOW PMU parser error 2018-06-18 17:48:42 +01:00
phy Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-06-06 18:39:49 -07:00
pinctrl pinctrl: mt7622: fix a kernel panic when pio don't work as EINT controller 2018-06-18 07:55:57 +02:00
platform fix a series of Documentation/ broken file name references 2018-06-15 18:10:01 -03:00
pnp media updates for v4.18-rc1 2018-06-07 12:34:37 -07:00
power treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
powercap treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
pps
ps3
ptp ptp: replace getnstimeofday64() with ktime_get_real_ts64() 2018-06-20 07:59:53 +09:00
pwm pwm: Changes for v4.18-rc1 2018-06-14 16:25:43 +09:00
rapidio treewide: Use array_size() in vmalloc() 2018-06-12 16:19:22 -07:00
ras
regulator treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
remoteproc treewide: use PHYS_ADDR_MAX to avoid type casting ULLONG_MAX 2018-06-15 07:55:25 +09:00
reset - Error path bug fix for overflow tests (Dan) 2018-06-12 18:28:00 -07:00
rpmsg rpmsg: smd: do not use mananged resources for endpoints and channels 2018-06-04 12:35:03 -07:00
rtc - New Device Support 2018-06-11 07:20:17 -07:00
s390 s390/qeth: consistently re-enable device features 2018-06-30 21:19:48 +09:00
sbus fix a series of Documentation/ broken file name references 2018-06-15 18:10:01 -03:00
scsi SCSI fixes on 20180627 2018-06-27 09:42:16 -07:00
sfi
sh treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
siox
slimbus treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
sn
soc Qualcomm Fixes for v4.18-rc2 2018-06-26 10:42:31 -07:00
soundwire docs: Fix more broken references 2018-06-15 18:11:26 -03:00
spi treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
spmi
ssb
staging Staging/IIO fixes for 4.18-rc3 2018-07-01 12:20:20 -07:00
target scsi: target: tcmu: add read length support 2018-06-18 21:02:52 -04:00
tc
tee
thermal - Error path bug fix for overflow tests (Dan) 2018-06-12 18:28:00 -07:00
thunderbolt
tty vt: prevent leaking uninitialized data to userspace via /dev/vcs* 2018-06-28 21:34:39 +09:00
uio treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
usb USB-serial fixes for v4.18-rc3 2018-06-28 19:19:10 +09:00
uwb treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
vfio VFIO updates for v4.18 2018-06-12 13:11:26 -07:00
vhost vhost_net: validate sock before trying to put its fd 2018-06-23 10:23:49 +09:00
video Solve a series of broken links for files under Documentation: 2018-06-17 05:25:18 +09:00
virt treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
virtio virtio, vhost: features, fixes 2018-06-16 06:35:02 +09:00
visorbus
vlynq
vme
w1 Char/Misc driver patches for 4.18-rc1 2018-06-05 16:20:22 -07:00
watchdog MIPS changes for 4.18 2018-06-12 12:56:02 -07:00
xen xen: fixes for 4.18-rc2 2018-06-23 20:44:11 +08:00
zorro - Introduce arithmetic overflow test helper functions (Rasmus) 2018-06-06 17:27:14 -07:00
Kconfig
Makefile