diff mbox series

[net-next,4/5] net: renesas: rswitch: Use AXI_TLIM_N queues if a TX queue

Message ID 20230529080840.1156458-5-yoshihiro.shimoda.uh@renesas.com (mailing list archive)
State Changes Requested
Delegated to: Netdev Maintainers
Headers show
Series net: renesas: rswitch: Improve performance of TX | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 8 this patch: 8
netdev/cc_maintainers warning 1 maintainers not CCed: alexanderduyck@fb.com
netdev/build_clang success Errors and warnings before: 8 this patch: 8
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 8 this patch: 8
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 41 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Yoshihiro Shimoda May 29, 2023, 8:08 a.m. UTC 
To use per-queue rate limiter feature in the future, use AXI_TLIM_N
queues if a TX queue.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
---
 drivers/net/ethernet/renesas/rswitch.c | 10 ++++++----
 drivers/net/ethernet/renesas/rswitch.h |  2 ++
 2 files changed, 8 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/renesas/rswitch.c b/drivers/net/ethernet/renesas/rswitch.c
index 4aab5d8aad2f..4ae34b0206cd 100644
--- a/drivers/net/ethernet/renesas/rswitch.c
+++ b/drivers/net/ethernet/renesas/rswitch.c
@@ -533,12 +533,14 @@  static void rswitch_gwca_linkfix_free(struct rswitch_private *priv)
 	gwca->linkfix_table = NULL;
 }
 
-static struct rswitch_gwca_queue *rswitch_gwca_get(struct rswitch_private *priv)
+static struct rswitch_gwca_queue *rswitch_gwca_get(struct rswitch_private *priv,
+						   bool dir_tx)
 {
 	struct rswitch_gwca_queue *gq;
 	int index;
 
-	index = find_first_zero_bit(priv->gwca.used, GWCA_AXI_CHAIN_N);
+	index = find_next_zero_bit(priv->gwca.used, GWCA_AXI_CHAIN_N,
+				   dir_tx ? GWCA_AXI_TRIM_BASE : 0);
 	if (index >= GWCA_AXI_CHAIN_N)
 		return NULL;
 	set_bit(index, priv->gwca.used);
@@ -561,7 +563,7 @@  static int rswitch_txdmac_alloc(struct net_device *ndev)
 	struct rswitch_private *priv = rdev->priv;
 	int err;
 
-	rdev->tx_queue = rswitch_gwca_get(priv);
+	rdev->tx_queue = rswitch_gwca_get(priv, true);
 	if (!rdev->tx_queue)
 		return -EBUSY;
 
@@ -595,7 +597,7 @@  static int rswitch_rxdmac_alloc(struct net_device *ndev)
 	struct rswitch_private *priv = rdev->priv;
 	int err;
 
-	rdev->rx_queue = rswitch_gwca_get(priv);
+	rdev->rx_queue = rswitch_gwca_get(priv, false);
 	if (!rdev->rx_queue)
 		return -EBUSY;
 
diff --git a/drivers/net/ethernet/renesas/rswitch.h b/drivers/net/ethernet/renesas/rswitch.h
index c3c2c92c2a1e..7ba45ddab42a 100644
--- a/drivers/net/ethernet/renesas/rswitch.h
+++ b/drivers/net/ethernet/renesas/rswitch.h
@@ -49,7 +49,9 @@ 
 #define GWRO			RSWITCH_GWCA0_OFFSET
 
 #define GWCA_AXI_CHAIN_N	128
+#define GWCA_AXI_TLIM_N		32
 #define GWCA_NUM_IRQ_REGS	(GWCA_AXI_CHAIN_N / BITS_PER_TYPE(u32))
+#define GWCA_AXI_TRIM_BASE	(GWCA_AXI_CHAIN_N - GWCA_AXI_TLIM_N)
 
 #define GWCA_TS_IRQ_RESOURCE_NAME	"gwca0_rxts0"
 #define GWCA_TS_IRQ_NAME		"rswitch: gwca0_rxts0"