[dpdk-dev] [PATCH 5/7] event/octeontx: add appication domain validation

[<pbhagavatula@marvell.com>]

From: Pavan Nikhilesh <pbhagavatula@marvell.com>

Add applicaton domain validation for OcteonTx TIM vfs aka Event timer.

Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
---
 drivers/event/octeontx/timvf_evdev.c | 12 ++---
 drivers/event/octeontx/timvf_evdev.h |  8 +---
 drivers/event/octeontx/timvf_probe.c | 65 ++++++++++++++++++----------
 3 files changed, 49 insertions(+), 36 deletions(-)

diff --git a/drivers/event/octeontx/timvf_evdev.c b/drivers/event/octeontx/timvf_evdev.c
index abbc9a775..caa129087 100644
--- a/drivers/event/octeontx/timvf_evdev.c
+++ b/drivers/event/octeontx/timvf_evdev.c
@@ -231,17 +231,15 @@ timvf_ring_create(struct rte_event_timer_adapter *adptr)
 {
 	char pool_name[25];
 	int ret;
+	uint8_t tim_ring_id;
 	uint64_t nb_timers;
 	struct rte_event_timer_adapter_conf *rcfg = &adptr->data->conf;
 	struct timvf_ring *timr;
-	struct timvf_info tinfo;
 	const char *mempool_ops;
 	unsigned int mp_flags = 0;
 
-	if (timvf_info(&tinfo) < 0)
-		return -ENODEV;
-
-	if (adptr->data->id >= tinfo.total_timvfs)
+	tim_ring_id = timvf_get_ring();
+	if (tim_ring_id == UINT8_MAX)
 		return -ENODEV;
 
 	timr = rte_zmalloc("octeontx_timvf_priv",
@@ -259,7 +257,7 @@ timvf_ring_create(struct rte_event_timer_adapter *adptr)
 	}
 
 	timr->clk_src = (int) rcfg->clk_src;
-	timr->tim_ring_id = adptr->data->id;
+	timr->tim_ring_id = tim_ring_id;
 	timr->tck_nsec = RTE_ALIGN_MUL_CEIL(rcfg->timer_tick_ns, 10);
 	timr->max_tout = rcfg->max_tmo_ns;
 	timr->nb_bkts = (timr->max_tout / timr->tck_nsec);
@@ -337,8 +335,10 @@ static int
 timvf_ring_free(struct rte_event_timer_adapter *adptr)
 {
 	struct timvf_ring *timr = adptr->data->adapter_priv;
+
 	rte_mempool_free(timr->chunk_pool);
 	rte_free(timr->bkt);
+	timvf_release_ring(timr->tim_ring_id);
 	rte_free(adptr->data->adapter_priv);
 	return 0;
 }
diff --git a/drivers/event/octeontx/timvf_evdev.h b/drivers/event/octeontx/timvf_evdev.h
index 0185593f1..d0e5921db 100644
--- a/drivers/event/octeontx/timvf_evdev.h
+++ b/drivers/event/octeontx/timvf_evdev.h
@@ -115,11 +115,6 @@
 extern int otx_logtype_timvf;
 static const uint16_t nb_chunk_slots = (TIM_CHUNK_SIZE / 16) - 1;
 
-struct timvf_info {
-	uint16_t domain; /* Domain id */
-	uint8_t total_timvfs; /* Total timvf available in domain */
-};
-
 enum timvf_clk_src {
 	TIM_CLK_SRC_SCLK = RTE_EVENT_TIMER_ADAPTER_CPU_CLK,
 	TIM_CLK_SRC_GPIO = RTE_EVENT_TIMER_ADAPTER_EXT_CLK0,
@@ -196,7 +191,8 @@ bkt_and(uint32_t rel_bkt, uint32_t nb_bkts)
 	return rel_bkt & (nb_bkts - 1);
 }
 
-int timvf_info(struct timvf_info *tinfo);
+uint8_t timvf_get_ring(void);
+void timvf_release_ring(uint8_t vfid);
 void *timvf_bar(uint8_t id, uint8_t bar);
 int timvf_timer_adapter_caps_get(const struct rte_eventdev *dev, uint64_t flags,
 		uint32_t *caps, const struct rte_event_timer_adapter_ops **ops,
diff --git a/drivers/event/octeontx/timvf_probe.c b/drivers/event/octeontx/timvf_probe.c
index af87625fd..59bba31e8 100644
--- a/drivers/event/octeontx/timvf_probe.c
+++ b/drivers/event/octeontx/timvf_probe.c
@@ -20,6 +20,7 @@
 #define TIM_MAX_RINGS				(64)
 
 struct timvf_res {
+	uint8_t in_use;
 	uint16_t domain;
 	uint16_t vfid;
 	void *bar0;
@@ -34,50 +35,65 @@ struct timdev {
 
 static struct timdev tdev;
 
-int
-timvf_info(struct timvf_info *tinfo)
+uint8_t
+timvf_get_ring(void)
 {
+	uint16_t global_domain = octeontx_get_global_domain();
 	int i;
-	struct ssovf_info info;
 
-	if (tinfo == NULL)
-		return -EINVAL;
+	for (i = 0; i < tdev.total_timvfs; i++) {
+		if (tdev.rings[i].domain != global_domain)
+			continue;
+		if (tdev.rings[i].in_use)
+			continue;
 
-	if (!tdev.total_timvfs)
-		return -ENODEV;
+		tdev.rings[i].in_use = true;
+		return tdev.rings[i].vfid;
+	}
 
-	if (ssovf_info(&info) < 0)
-		return -EINVAL;
+	return UINT8_MAX;
+}
+
+void
+timvf_release_ring(uint8_t tim_ring_id)
+{
+	uint16_t global_domain = octeontx_get_global_domain();
+	int i;
 
 	for (i = 0; i < tdev.total_timvfs; i++) {
-		if (info.domain != tdev.rings[i].domain) {
-			timvf_log_err("GRP error, vfid=%d/%d domain=%d/%d %p",
-				i, tdev.rings[i].vfid,
-				info.domain, tdev.rings[i].domain,
-				tdev.rings[i].bar0);
-			return -EINVAL;
-		}
+		if (tdev.rings[i].domain != global_domain)
+			continue;
+		if (tdev.rings[i].vfid == tim_ring_id)
+			tdev.rings[i].in_use = false;
 	}
-
-	tinfo->total_timvfs = tdev.total_timvfs;
-	tinfo->domain = info.domain;
-	return 0;
 }
 
 void*
-timvf_bar(uint8_t id, uint8_t bar)
+timvf_bar(uint8_t vfid, uint8_t bar)
 {
+	uint16_t global_domain = octeontx_get_global_domain();
+	struct timvf_res *res = NULL;
+	int i;
+
 	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 		return NULL;
 
-	if (id > tdev.total_timvfs)
+	for (i = 0; i < tdev.total_timvfs; i++) {
+		if (tdev.rings[i].domain != global_domain)
+			continue;
+		if (tdev.rings[i].vfid == vfid)
+			res = &tdev.rings[i];
+
+	}
+
+	if (res == NULL)
 		return NULL;
 
 	switch (bar) {
 	case 0:
-		return tdev.rings[id].bar0;
+		return res->bar0;
 	case 4:
-		return tdev.rings[id].bar4;
+		return res->bar4;
 	default:
 		return NULL;
 	}
@@ -118,6 +134,7 @@ timvf_probe(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
 	res->bar2 = pci_dev->mem_resource[2].addr;
 	res->bar4 = pci_dev->mem_resource[4].addr;
 	res->domain = (val >> 7) & 0xffff;
+	res->in_use = false;
 	tdev.total_timvfs++;
 	rte_wmb();
 
-- 
2.24.0