eal/arm: add WFET in power management intrinsics

Wait for event with timeout (WFET) puts the CPU in a low power
mode and stays there until an event is signalled (SEV), loss of
an exclusive monitor o

eal/arm: add WFET in power management intrinsics

Wait for event with timeout (WFET) puts the CPU in a low power
mode and stays there until an event is signalled (SEV), loss of
an exclusive monitor or a timeout.
WFET is enabled selectively by checking FEAT_WFxT in Linux
auxiliary vector. If FEAT_WFxT is not available power management
will fallback to WFE.
WFE is available on all the Arm platforms supported by DPDK.
Therefore, the RTE_ARM_USE_WFE macro is not required to enable
the WFE feature for PMD power monitoring. 
RTE_ARM_USE_WFE is used at the build time to use the WFE instruction
where applicable in the code at the developer's discretion rather
than as an indicator of the instruction's availability.

Signed-off-by: Wathsala Vithanage <wathsala.vithanage@arm.com>
Reviewed-by: Dhruv Tripathi <dhruv.tripathi@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: Jack Bond-Preston <jack.bond-preston@foss.arm.com>
Reviewed-by: Nick Connolly <nick.connolly@arm.com>
Reviewed-by: Vinod Krishna <vinod.krishna@arm.com>

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eal/arm: expand availability of WFE related instructions

The availability of __RTE_ARM_WFE, __RTE_ARM_SEV, __RTE_ARM_SEVL,
and __RTE_ARM_LOAD_EXC_* macros for other applications, such as
PMD power

eal/arm: expand availability of WFE related instructions

The availability of __RTE_ARM_WFE, __RTE_ARM_SEV, __RTE_ARM_SEVL,
and __RTE_ARM_LOAD_EXC_* macros for other applications, such as
PMD power management, should not depend on the choice of use of
these instructions in rte_wait_until_equal_N functions.
Therefore, this patch moves these macros out of control of the
RTE_WAIT_UNTIL_EQUAL_ARCH_DEFINED macro.

Signed-off-by: Wathsala Vithanage <wathsala.vithanage@arm.com>
Reviewed-by: Dhruv Tripathi <dhruv.tripathi@arm.com>

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eal: remove number of cpuflags from API

The RTE_CPUFLAG_NUMFLAGS enum value was mainly a canary for internal
use. Yet, it could be passed by an application to
rte_cpu_get_flag_enabled() / rte_cpu_ge

eal: remove number of cpuflags from API

The RTE_CPUFLAG_NUMFLAGS enum value was mainly a canary for internal
use. Yet, it could be passed by an application to
rte_cpu_get_flag_enabled() / rte_cpu_get_flag_name().
So, even though passing this value to those functions is debattable,
changing its meaning (by adding a new CPU feature for example) would
impact ABI compatibility.

This patch removes RTE_CPUFLAG_NUMFLAGS to avoid such future ABI
compatibility issue.

Signed-off-by: Sivaprasad Tummala <sivaprasad.tummala@amd.com>
Signed-off-by: David Marchand <david.marchand@redhat.com>

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eal/arm: add power management intrinsics

For Arm arch, use WFE instruction to enable power monitor API, and use
SEV instruction to enable wake up API.

A monitoring condition may refer to one byte d

eal/arm: add power management intrinsics

For Arm arch, use WFE instruction to enable power monitor API, and use
SEV instruction to enable wake up API.

A monitoring condition may refer to one byte data.
Add 8 bits case for atomic exclusive helpers.

Signed-off-by: Feifei Wang <feifei.wang2@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
Acked-by: David Hunt <david.hunt@intel.com>

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eal/arm: update CPU flags

There are two execution states on armv8 architecture, aarch64 and
aarch32. Add PLATFORM_STR for the latter and update RTE_ARCH_* flags
according to e9b97392640.

Signed-off

eal/arm: update CPU flags

There are two execution states on armv8 architecture, aarch64 and
aarch32. Add PLATFORM_STR for the latter and update RTE_ARCH_* flags
according to e9b97392640.

Signed-off-by: Juraj Linkeš <juraj.linkes@pantheon.tech>

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eal/arm: remove unused type

Data types Elf32_auxv_t and Elf64_auxv_t are used by OS Linux
auxiliary vector read, and not used by arch specific cpu flag
API implementations. Hence remove them from Ar

eal/arm: remove unused type

Data types Elf32_auxv_t and Elf64_auxv_t are used by OS Linux
auxiliary vector read, and not used by arch specific cpu flag
API implementations. Hence remove them from Arm file.

Reported-by: James Grant <j.grant@qub.ac.uk>
Signed-off-by: Ruifeng Wang <ruifeng.wang@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>

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eal/arm64: fix platform register bit

REG_PLATFORM only uses bit 0 to indicate whether the value retrieved
from hardware matches PLATFORM_STR.

Fixes: 97523f822ba9 ("eal/arm: add CPU flags for ARMv8"

eal/arm64: fix platform register bit

REG_PLATFORM only uses bit 0 to indicate whether the value retrieved
from hardware matches PLATFORM_STR.

Fixes: 97523f822ba9 ("eal/arm: add CPU flags for ARMv8")
Cc: stable@dpdk.org

Signed-off-by: Juraj Linkeš <juraj.linkes@pantheon.tech>
Reviewed-by: Jerin Jacob <jerinj@marvell.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>

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lib: remove librte_ prefix from directory names

There is no reason for the DPDK libraries to all have 'librte_' prefix on
the directory names. This prefix makes the directory names longer and also
m

lib: remove librte_ prefix from directory names

There is no reason for the DPDK libraries to all have 'librte_' prefix on
the directory names. This prefix makes the directory names longer and also
makes it awkward to add features referring to individual libraries in the
build - should the lib names be specified with or without the prefix.
Therefore, we can just remove the library prefix and use the library's
unique name as the directory name, i.e. 'eal' rather than 'librte_eal'

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>

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