[dpdk-dev] [PATCH] compress/isal: support Arm platform

[Ruifeng Wang <ruifeng.wang@arm.com>]

Isal compress PMD has build failures on Arm platform.

As dependent library ISA-L is supported on Arm platform,
support of the PMD is expanded to Arm architecture.
Fixed build failure caused by architecture specific code,
and made the PMD multi architecture compatible.

Bugzilla ID: 755
Signed-off-by: Ruifeng Wang <ruifeng.wang@arm.com>
---
 doc/guides/rel_notes/release_21_08.rst        | 3 +++
 drivers/compress/isal/isal_compress_pmd.c     | 6 +++++-
 drivers/compress/isal/isal_compress_pmd_ops.c | 6 ++++++
 3 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/doc/guides/rel_notes/release_21_08.rst b/doc/guides/rel_notes/release_21_08.rst
index 6a902ef9ac..9e2e1de7fe 100644
--- a/doc/guides/rel_notes/release_21_08.rst
+++ b/doc/guides/rel_notes/release_21_08.rst
@@ -117,6 +117,9 @@ New Features
   The experimental PMD power management API now supports managing
   multiple Ethernet Rx queues per lcore.
 
+* **Updated ISAL compress device PMD.**
+
+  The ISAL compress device PMD now supports Arm platforms.
 
 Removed Items
 -------------
diff --git a/drivers/compress/isal/isal_compress_pmd.c b/drivers/compress/isal/isal_compress_pmd.c
index 81b937ee73..b7ba61c434 100644
--- a/drivers/compress/isal/isal_compress_pmd.c
+++ b/drivers/compress/isal/isal_compress_pmd.c
@@ -5,6 +5,7 @@
 
 #include <rte_bus_vdev.h>
 #include <rte_common.h>
+#include <rte_cpuflags.h>
 #include <rte_malloc.h>
 #include <rte_mbuf.h>
 #include <rte_compressdev_pmd.h>
@@ -146,6 +147,7 @@ isal_comp_set_priv_xform_parameters(struct isal_priv_xform *priv_xform,
 				break;
 			/* Level 3 or higher requested */
 			default:
+#ifdef RTE_ARCH_X86
 				/* Check for AVX512, to use ISA-L level 3 */
 				if (rte_cpu_get_flag_enabled(
 						RTE_CPUFLAG_AVX512F)) {
@@ -161,7 +163,9 @@ isal_comp_set_priv_xform_parameters(struct isal_priv_xform *priv_xform,
 						RTE_COMP_ISAL_LEVEL_THREE;
 					priv_xform->level_buffer_size =
 						ISAL_DEF_LVL3_DEFAULT;
-				} else {
+				} else
+#endif
+				{
 					ISAL_PMD_LOG(DEBUG, "Requested ISA-L level"
 						" 3 or above; Level 3 optimized"
 						" for AVX512 & AVX2 only."
diff --git a/drivers/compress/isal/isal_compress_pmd_ops.c b/drivers/compress/isal/isal_compress_pmd_ops.c
index 7d03749da3..9b42147a0b 100644
--- a/drivers/compress/isal/isal_compress_pmd_ops.c
+++ b/drivers/compress/isal/isal_compress_pmd_ops.c
@@ -4,6 +4,7 @@
 #include <isa-l.h>
 
 #include <rte_common.h>
+#include <rte_cpuflags.h>
 #include <rte_compressdev_pmd.h>
 #include <rte_malloc.h>
 
@@ -139,6 +140,7 @@ isal_comp_pmd_info_get(struct rte_compressdev *dev __rte_unused,
 		/* Check CPU for supported vector instruction and set
 		 * feature_flags
 		 */
+#if defined(RTE_ARCH_X86)
 		if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F))
 			dev_info->feature_flags |= RTE_COMPDEV_FF_CPU_AVX512;
 		else if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2))
@@ -147,6 +149,10 @@ isal_comp_pmd_info_get(struct rte_compressdev *dev __rte_unused,
 			dev_info->feature_flags |= RTE_COMPDEV_FF_CPU_AVX;
 		else
 			dev_info->feature_flags |= RTE_COMPDEV_FF_CPU_SSE;
+#elif defined(RTE_ARCH_ARM)
+		if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON))
+			dev_info->feature_flags |= RTE_COMPDEV_FF_CPU_NEON;
+#endif
 	}
 }
 
-- 
2.25.1