[dpdk-dev] [PATCH v4 5/5] fslmc: enable dpaax library

[Shreyansh Jain <shreyansh.jain@nxp.com>]

With this patch, fslmc bus and ethernet devices on this bus
would start using the physical-virtual library interfaces.

This patch impacts mempool/dpaa2, event/dpaa2, net/dpaa2,
raw/dpaa2_cmdif and raw/dpaa2_qdma as they are dependent
on the bus/fslmc and thus impact linkage of libraries.

Signed-off-by: Shreyansh Jain <shreyansh.jain@nxp.com>
---
 drivers/bus/fslmc/Makefile               |  1 +
 drivers/bus/fslmc/fslmc_bus.c            | 20 ++++++++++++++++
 drivers/bus/fslmc/meson.build            |  2 +-
 drivers/bus/fslmc/portal/dpaa2_hw_pvt.h  | 21 ++++++++---------
 drivers/crypto/dpaa2_sec/Makefile        |  1 +
 drivers/event/dpaa2/Makefile             |  1 +
 drivers/mempool/dpaa2/Makefile           |  1 +
 drivers/mempool/dpaa2/dpaa2_hw_mempool.c | 29 ++++--------------------
 drivers/net/dpaa2/Makefile               |  1 +
 drivers/raw/dpaa2_cmdif/Makefile         |  1 +
 drivers/raw/dpaa2_qdma/Makefile          |  1 +
 mk/rte.app.mk                            |  1 +
 12 files changed, 43 insertions(+), 37 deletions(-)

diff --git a/drivers/bus/fslmc/Makefile b/drivers/bus/fslmc/Makefile
index e95551980..218d9bd28 100644
--- a/drivers/bus/fslmc/Makefile
+++ b/drivers/bus/fslmc/Makefile
@@ -19,6 +19,7 @@ CFLAGS += -I$(RTE_SDK)/drivers/bus/fslmc/qbman/include
 CFLAGS += -I$(RTE_SDK)/lib/librte_eal/common
 LDLIBS += -lrte_eal -lrte_mbuf -lrte_mempool -lrte_ring
 LDLIBS += -lrte_ethdev
+LDLIBS += -lrte_common_dpaax
 
 # versioning export map
 EXPORT_MAP := rte_bus_fslmc_version.map
diff --git a/drivers/bus/fslmc/fslmc_bus.c b/drivers/bus/fslmc/fslmc_bus.c
index 2bc9457bc..5ba5ce96b 100644
--- a/drivers/bus/fslmc/fslmc_bus.c
+++ b/drivers/bus/fslmc/fslmc_bus.c
@@ -20,6 +20,8 @@
 #include <fslmc_vfio.h>
 #include "fslmc_logs.h"
 
+#include <dpaax_iova_table.h>
+
 int dpaa2_logtype_bus;
 
 #define VFIO_IOMMU_GROUP_PATH "/sys/kernel/iommu_groups"
@@ -377,6 +379,19 @@ rte_fslmc_probe(void)
 
 	probe_all = rte_fslmc_bus.bus.conf.scan_mode != RTE_BUS_SCAN_WHITELIST;
 
+	/* In case of PA, the FD addresses returned by qbman APIs are physical
+	 * addresses, which need conversion into equivalent VA address for
+	 * rte_mbuf. For that, a table (a serial array, in memory) is used to
+	 * increase translation efficiency.
+	 * This has to be done before probe as some device initialization
+	 * (during) probe allocate memory (dpaa2_sec) which needs to be pinned
+	 * to this table.
+	 */
+	ret = dpaax_iova_table_populate();
+	if (ret) {
+		DPAA2_BUS_WARN("PA->VA Translation table not available;");
+	}
+
 	TAILQ_FOREACH(dev, &rte_fslmc_bus.device_list, next) {
 		TAILQ_FOREACH(drv, &rte_fslmc_bus.driver_list, next) {
 			ret = rte_fslmc_match(drv, dev);
@@ -456,6 +471,11 @@ rte_fslmc_driver_unregister(struct rte_dpaa2_driver *driver)
 
 	fslmc_bus = driver->fslmc_bus;
 
+	/* Cleanup the PA->VA Translation table; From whereever this function
+	 * is called from.
+	 */
+	dpaax_iova_table_depopulate();
+
 	TAILQ_REMOVE(&fslmc_bus->driver_list, driver, next);
 	/* Update Bus references */
 	driver->fslmc_bus = NULL;
diff --git a/drivers/bus/fslmc/meson.build b/drivers/bus/fslmc/meson.build
index 54ca92d0c..18c45495b 100644
--- a/drivers/bus/fslmc/meson.build
+++ b/drivers/bus/fslmc/meson.build
@@ -7,7 +7,7 @@ if host_machine.system() != 'linux'
         build = false
 endif
 
-deps += ['eventdev', 'kvargs']
+deps += ['common_dpaax', 'eventdev', 'kvargs']
 sources = files('fslmc_bus.c',
 		'fslmc_vfio.c',
 		'mc/dpbp.c',
diff --git a/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h b/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h
index 820759360..678ee34b8 100644
--- a/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h
+++ b/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h
@@ -9,6 +9,7 @@
 #define _DPAA2_HW_PVT_H_
 
 #include <rte_eventdev.h>
+#include <dpaax_iova_table.h>
 
 #include <mc/fsl_mc_sys.h>
 #include <fsl_qbman_portal.h>
@@ -275,28 +276,26 @@ extern struct dpaa2_memseg_list rte_dpaa2_memsegs;
 #ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
 extern uint8_t dpaa2_virt_mode;
 static void *dpaa2_mem_ptov(phys_addr_t paddr) __attribute__((unused));
-/* todo - this is costly, need to write a fast coversion routine */
+
 static void *dpaa2_mem_ptov(phys_addr_t paddr)
 {
-	struct dpaa2_memseg *ms;
+	void *va;
 
 	if (dpaa2_virt_mode)
 		return (void *)(size_t)paddr;
 
-	/* Check if the address is already part of the memseg list internally
-	 * maintained by the dpaa2 driver.
-	 */
-	TAILQ_FOREACH(ms, &rte_dpaa2_memsegs, next) {
-		if (paddr >= ms->iova && paddr <
-			ms->iova + ms->len)
-			return RTE_PTR_ADD(ms->vaddr, (uintptr_t)(paddr - ms->iova));
-	}
+	va = (void *)dpaax_iova_table_get_va(paddr);
+	if (likely(va != NULL))
+		return va;
 
 	/* If not, Fallback to full memseg list searching */
-	return rte_mem_iova2virt(paddr);
+	va = rte_mem_iova2virt(paddr);
+
+	return va;
 }
 
 static phys_addr_t dpaa2_mem_vtop(uint64_t vaddr) __attribute__((unused));
+
 static phys_addr_t dpaa2_mem_vtop(uint64_t vaddr)
 {
 	const struct rte_memseg *memseg;
diff --git a/drivers/crypto/dpaa2_sec/Makefile b/drivers/crypto/dpaa2_sec/Makefile
index da3d8f84f..1f951a14b 100644
--- a/drivers/crypto/dpaa2_sec/Makefile
+++ b/drivers/crypto/dpaa2_sec/Makefile
@@ -51,5 +51,6 @@ LDLIBS += -lrte_bus_fslmc
 LDLIBS += -lrte_mempool_dpaa2
 LDLIBS += -lrte_eal -lrte_mbuf -lrte_mempool -lrte_ring
 LDLIBS += -lrte_cryptodev
+LDLIBS += -lrte_common_dpaax
 
 include $(RTE_SDK)/mk/rte.lib.mk
diff --git a/drivers/event/dpaa2/Makefile b/drivers/event/dpaa2/Makefile
index 5e1a63200..7a71161de 100644
--- a/drivers/event/dpaa2/Makefile
+++ b/drivers/event/dpaa2/Makefile
@@ -21,6 +21,7 @@ CFLAGS += -I$(RTE_SDK)/lib/librte_eal/linuxapp/eal
 LDLIBS += -lrte_eal -lrte_eventdev
 LDLIBS += -lrte_bus_fslmc -lrte_mempool_dpaa2 -lrte_pmd_dpaa2
 LDLIBS += -lrte_bus_vdev
+LDLIBS += -lrte_common_dpaax
 CFLAGS += -I$(RTE_SDK)/drivers/net/dpaa2
 CFLAGS += -I$(RTE_SDK)/drivers/net/dpaa2/mc
 
diff --git a/drivers/mempool/dpaa2/Makefile b/drivers/mempool/dpaa2/Makefile
index 9e4c87d79..0fc69c3bf 100644
--- a/drivers/mempool/dpaa2/Makefile
+++ b/drivers/mempool/dpaa2/Makefile
@@ -30,6 +30,7 @@ SRCS-$(CONFIG_RTE_LIBRTE_DPAA2_MEMPOOL) += dpaa2_hw_mempool.c
 
 LDLIBS += -lrte_bus_fslmc
 LDLIBS += -lrte_eal -lrte_mempool -lrte_ring
+LDLIBS += -lrte_common_dpaax
 
 SYMLINK-$(CONFIG_RTE_LIBRTE_DPAA2_MEMPOOL)-include := rte_dpaa2_mempool.h
 
diff --git a/drivers/mempool/dpaa2/dpaa2_hw_mempool.c b/drivers/mempool/dpaa2/dpaa2_hw_mempool.c
index 84ff12811..c5f60c5c6 100644
--- a/drivers/mempool/dpaa2/dpaa2_hw_mempool.c
+++ b/drivers/mempool/dpaa2/dpaa2_hw_mempool.c
@@ -30,6 +30,8 @@
 #include "dpaa2_hw_mempool.h"
 #include "dpaa2_hw_mempool_logs.h"
 
+#include <dpaax_iova_table.h>
+
 struct dpaa2_bp_info rte_dpaa2_bpid_info[MAX_BPID];
 static struct dpaa2_bp_list *h_bp_list;
 
@@ -393,31 +395,8 @@ dpaa2_populate(struct rte_mempool *mp, unsigned int max_objs,
 	      void *vaddr, rte_iova_t paddr, size_t len,
 	      rte_mempool_populate_obj_cb_t *obj_cb, void *obj_cb_arg)
 {
-	struct dpaa2_memseg *ms;
-
-	/* For each memory chunk pinned to the Mempool, a linked list of the
-	 * contained memsegs is created for searching when PA to VA
-	 * conversion is required.
-	 */
-	ms = rte_zmalloc(NULL, sizeof(struct dpaa2_memseg), 0);
-	if (!ms) {
-		DPAA2_MEMPOOL_ERR("Unable to allocate internal memory.");
-		DPAA2_MEMPOOL_WARN("Fast Physical to Virtual Addr translation would not be available.");
-		/* If the element is not added, it would only lead to failure
-		 * in searching for the element and the logic would Fallback
-		 * to traditional DPDK memseg traversal code. So, this is not
-		 * a blocking error - but, error would be printed on screen.
-		 */
-		return 0;
-	}
-
-	ms->vaddr = vaddr;
-	ms->iova = paddr;
-	ms->len = len;
-	/* Head insertions are generally faster than tail insertions as the
-	 * buffers pinned are picked from rear end.
-	 */
-	TAILQ_INSERT_HEAD(&rte_dpaa2_memsegs, ms, next);
+	/* Insert entry into the PA->VA Table */
+	dpaax_iova_table_update(paddr, vaddr, len);
 
 	return rte_mempool_op_populate_default(mp, max_objs, vaddr, paddr, len,
 					       obj_cb, obj_cb_arg);
diff --git a/drivers/net/dpaa2/Makefile b/drivers/net/dpaa2/Makefile
index 9b0b14331..52649a945 100644
--- a/drivers/net/dpaa2/Makefile
+++ b/drivers/net/dpaa2/Makefile
@@ -40,5 +40,6 @@ LDLIBS += -lrte_bus_fslmc
 LDLIBS += -lrte_mempool_dpaa2
 LDLIBS += -lrte_eal -lrte_mbuf -lrte_mempool -lrte_ring
 LDLIBS += -lrte_ethdev -lrte_net -lrte_kvargs
+LDLIBS += -lrte_common_dpaax
 
 include $(RTE_SDK)/mk/rte.lib.mk
diff --git a/drivers/raw/dpaa2_cmdif/Makefile b/drivers/raw/dpaa2_cmdif/Makefile
index 9b863dda2..3c56c4b44 100644
--- a/drivers/raw/dpaa2_cmdif/Makefile
+++ b/drivers/raw/dpaa2_cmdif/Makefile
@@ -21,6 +21,7 @@ LDLIBS += -lrte_eal
 LDLIBS += -lrte_kvargs
 LDLIBS += -lrte_mempool_dpaa2
 LDLIBS += -lrte_rawdev
+LDLIBS += -lrte_common_dpaax
 
 EXPORT_MAP := rte_pmd_dpaa2_cmdif_version.map
 
diff --git a/drivers/raw/dpaa2_qdma/Makefile b/drivers/raw/dpaa2_qdma/Makefile
index d88809ead..2f79a3f41 100644
--- a/drivers/raw/dpaa2_qdma/Makefile
+++ b/drivers/raw/dpaa2_qdma/Makefile
@@ -22,6 +22,7 @@ LDLIBS += -lrte_mempool
 LDLIBS += -lrte_mempool_dpaa2
 LDLIBS += -lrte_rawdev
 LDLIBS += -lrte_ring
+LDLIBS += -lrte_common_dpaax
 
 EXPORT_MAP := rte_pmd_dpaa2_qdma_version.map
 
diff --git a/mk/rte.app.mk b/mk/rte.app.mk
index 85605e38e..f2218df39 100644
--- a/mk/rte.app.mk
+++ b/mk/rte.app.mk
@@ -121,6 +121,7 @@ _LDLIBS-$(CONFIG_RTE_LIBRTE_COMMON_DPAAX)   += -lrte_common_dpaax
 _LDLIBS-$(CONFIG_RTE_LIBRTE_DPAA_MEMPOOL)   += -lrte_mempool_dpaa
 endif
 ifeq ($(CONFIG_RTE_EAL_VFIO)$(CONFIG_RTE_LIBRTE_FSLMC_BUS),yy)
+_LDLIBS-$(CONFIG_RTE_LIBRTE_COMMON_DPAAX)   += -lrte_common_dpaax
 _LDLIBS-$(CONFIG_RTE_LIBRTE_DPAA2_MEMPOOL)  += -lrte_mempool_dpaa2
 endif
 
-- 
2.17.1