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Date: Fri, 1 Oct 2021 16:06:29 +0100
From: Biju Das <biju.das.jz@...renesas.com>
To: "David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>
Cc: Biju Das <biju.das.jz@...renesas.com>,
Sergei Shtylyov <sergei.shtylyov@...il.com>,
Geert Uytterhoeven <geert+renesas@...der.be>,
Sergey Shtylyov <s.shtylyov@...russia.ru>,
Adam Ford <aford173@...il.com>, Andrew Lunn <andrew@...n.ch>,
Yuusuke Ashizuka <ashiduka@...itsu.com>,
Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
netdev@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
Chris Paterson <Chris.Paterson2@...esas.com>,
Biju Das <biju.das@...renesas.com>,
Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH 03/10] ravb: Add nc_queue to struct ravb_hw_info
R-Car supports network control queue whereas RZ/G2L does not support
it. Add nc_queue to struct ravb_hw_info, so that NC queue is handled
only by R-Car.
This patch also renames ravb_rcar_dmac_init to ravb_dmac_init_rcar
to be consistent with the naming convention used in sh_eth driver.
Signed-off-by: Biju Das <biju.das.jz@...renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
RFC->v1:
* Handled NC queue only for R-Car.
---
drivers/net/ethernet/renesas/ravb.h | 3 +-
drivers/net/ethernet/renesas/ravb_main.c | 140 +++++++++++++++--------
2 files changed, 94 insertions(+), 49 deletions(-)
diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
index a33fbcb4aac3..c91e93e5590f 100644
--- a/drivers/net/ethernet/renesas/ravb.h
+++ b/drivers/net/ethernet/renesas/ravb.h
@@ -986,7 +986,7 @@ struct ravb_hw_info {
bool (*receive)(struct net_device *ndev, int *quota, int q);
void (*set_rate)(struct net_device *ndev);
int (*set_feature)(struct net_device *ndev, netdev_features_t features);
- void (*dmac_init)(struct net_device *ndev);
+ int (*dmac_init)(struct net_device *ndev);
void (*emac_init)(struct net_device *ndev);
const char (*gstrings_stats)[ETH_GSTRING_LEN];
size_t gstrings_size;
@@ -1002,6 +1002,7 @@ struct ravb_hw_info {
unsigned multi_irqs:1; /* AVB-DMAC and E-MAC has multiple irqs */
unsigned gptp:1; /* AVB-DMAC has gPTP support */
unsigned ccc_gac:1; /* AVB-DMAC has gPTP support active in config mode */
+ unsigned nc_queue:1; /* AVB-DMAC has NC queue */
};
struct ravb_private {
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index dc7654abfe55..8bf13586e90a 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -461,10 +461,24 @@ static void ravb_emac_init(struct net_device *ndev)
info->emac_init(ndev);
}
-static void ravb_rcar_dmac_init(struct net_device *ndev)
+static int ravb_dmac_init_rcar(struct net_device *ndev)
{
struct ravb_private *priv = netdev_priv(ndev);
const struct ravb_hw_info *info = priv->info;
+ int error;
+
+ error = ravb_ring_init(ndev, RAVB_BE);
+ if (error)
+ return error;
+ error = ravb_ring_init(ndev, RAVB_NC);
+ if (error) {
+ ravb_ring_free(ndev, RAVB_BE);
+ return error;
+ }
+
+ /* Descriptor format */
+ ravb_ring_format(ndev, RAVB_BE);
+ ravb_ring_format(ndev, RAVB_NC);
/* Set AVB RX */
ravb_write(ndev,
@@ -491,6 +505,8 @@ static void ravb_rcar_dmac_init(struct net_device *ndev)
ravb_write(ndev, RIC2_QFE0 | RIC2_QFE1 | RIC2_RFFE, RIC2);
/* Frame transmitted, timestamp FIFO updated */
ravb_write(ndev, TIC_FTE0 | TIC_FTE1 | TIC_TFUE, TIC);
+
+ return 0;
}
/* Device init function for Ethernet AVB */
@@ -505,20 +521,9 @@ static int ravb_dmac_init(struct net_device *ndev)
if (error)
return error;
- error = ravb_ring_init(ndev, RAVB_BE);
+ error = info->dmac_init(ndev);
if (error)
return error;
- error = ravb_ring_init(ndev, RAVB_NC);
- if (error) {
- ravb_ring_free(ndev, RAVB_BE);
- return error;
- }
-
- /* Descriptor format */
- ravb_ring_format(ndev, RAVB_BE);
- ravb_ring_format(ndev, RAVB_NC);
-
- info->dmac_init(ndev);
/* Setting the control will start the AVB-DMAC process. */
ravb_modify(ndev, CCC, CCC_OPC, CCC_OPC_OPERATION);
@@ -859,6 +864,7 @@ static irqreturn_t ravb_interrupt(int irq, void *dev_id)
{
struct net_device *ndev = dev_id;
struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
irqreturn_t result = IRQ_NONE;
u32 iss;
@@ -875,8 +881,13 @@ static irqreturn_t ravb_interrupt(int irq, void *dev_id)
result = IRQ_HANDLED;
/* Network control and best effort queue RX/TX */
- for (q = RAVB_NC; q >= RAVB_BE; q--) {
- if (ravb_queue_interrupt(ndev, q))
+ if (info->nc_queue) {
+ for (q = RAVB_NC; q >= RAVB_BE; q--) {
+ if (ravb_queue_interrupt(ndev, q))
+ result = IRQ_HANDLED;
+ }
+ } else {
+ if (ravb_queue_interrupt(ndev, RAVB_BE))
result = IRQ_HANDLED;
}
}
@@ -1000,7 +1011,8 @@ static int ravb_poll(struct napi_struct *napi, int budget)
/* Receive error message handling */
priv->rx_over_errors = priv->stats[RAVB_BE].rx_over_errors;
- priv->rx_over_errors += priv->stats[RAVB_NC].rx_over_errors;
+ if (info->nc_queue)
+ priv->rx_over_errors += priv->stats[RAVB_NC].rx_over_errors;
if (priv->rx_over_errors != ndev->stats.rx_over_errors)
ndev->stats.rx_over_errors = priv->rx_over_errors;
if (priv->rx_fifo_errors != ndev->stats.rx_fifo_errors)
@@ -1208,11 +1220,14 @@ static void ravb_get_ethtool_stats(struct net_device *ndev,
struct ethtool_stats *estats, u64 *data)
{
struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
+ int num_rx_q;
int i = 0;
int q;
+ num_rx_q = info->nc_queue ? NUM_RX_QUEUE : 1;
/* Device-specific stats */
- for (q = RAVB_BE; q < NUM_RX_QUEUE; q++) {
+ for (q = RAVB_BE; q < num_rx_q; q++) {
struct net_device_stats *stats = &priv->stats[q];
data[i++] = priv->cur_rx[q];
@@ -1287,7 +1302,8 @@ static int ravb_set_ringparam(struct net_device *ndev,
/* Free all the skb's in the RX queue and the DMA buffers. */
ravb_ring_free(ndev, RAVB_BE);
- ravb_ring_free(ndev, RAVB_NC);
+ if (info->nc_queue)
+ ravb_ring_free(ndev, RAVB_NC);
}
/* Set new parameters */
@@ -1403,7 +1419,8 @@ static int ravb_open(struct net_device *ndev)
int error;
napi_enable(&priv->napi[RAVB_BE]);
- napi_enable(&priv->napi[RAVB_NC]);
+ if (info->nc_queue)
+ napi_enable(&priv->napi[RAVB_NC]);
if (!info->multi_irqs) {
error = request_irq(ndev->irq, ravb_interrupt, IRQF_SHARED,
@@ -1477,7 +1494,8 @@ static int ravb_open(struct net_device *ndev)
out_free_irq:
free_irq(ndev->irq, ndev);
out_napi_off:
- napi_disable(&priv->napi[RAVB_NC]);
+ if (info->nc_queue)
+ napi_disable(&priv->napi[RAVB_NC]);
napi_disable(&priv->napi[RAVB_BE]);
return error;
}
@@ -1526,7 +1544,8 @@ static void ravb_tx_timeout_work(struct work_struct *work)
}
ravb_ring_free(ndev, RAVB_BE);
- ravb_ring_free(ndev, RAVB_NC);
+ if (info->nc_queue)
+ ravb_ring_free(ndev, RAVB_NC);
/* Device init */
error = ravb_dmac_init(ndev);
@@ -1698,28 +1717,38 @@ static struct net_device_stats *ravb_get_stats(struct net_device *ndev)
nstats = &ndev->stats;
stats0 = &priv->stats[RAVB_BE];
- stats1 = &priv->stats[RAVB_NC];
if (info->tx_counters) {
nstats->tx_dropped += ravb_read(ndev, TROCR);
ravb_write(ndev, 0, TROCR); /* (write clear) */
}
- nstats->rx_packets = stats0->rx_packets + stats1->rx_packets;
- nstats->tx_packets = stats0->tx_packets + stats1->tx_packets;
- nstats->rx_bytes = stats0->rx_bytes + stats1->rx_bytes;
- nstats->tx_bytes = stats0->tx_bytes + stats1->tx_bytes;
- nstats->multicast = stats0->multicast + stats1->multicast;
- nstats->rx_errors = stats0->rx_errors + stats1->rx_errors;
- nstats->rx_crc_errors = stats0->rx_crc_errors + stats1->rx_crc_errors;
- nstats->rx_frame_errors =
- stats0->rx_frame_errors + stats1->rx_frame_errors;
- nstats->rx_length_errors =
- stats0->rx_length_errors + stats1->rx_length_errors;
- nstats->rx_missed_errors =
- stats0->rx_missed_errors + stats1->rx_missed_errors;
- nstats->rx_over_errors =
- stats0->rx_over_errors + stats1->rx_over_errors;
+ nstats->rx_packets = stats0->rx_packets;
+ nstats->tx_packets = stats0->tx_packets;
+ nstats->rx_bytes = stats0->rx_bytes;
+ nstats->tx_bytes = stats0->tx_bytes;
+ nstats->multicast = stats0->multicast;
+ nstats->rx_errors = stats0->rx_errors;
+ nstats->rx_crc_errors = stats0->rx_crc_errors;
+ nstats->rx_frame_errors = stats0->rx_frame_errors;
+ nstats->rx_length_errors = stats0->rx_length_errors;
+ nstats->rx_missed_errors = stats0->rx_missed_errors;
+ nstats->rx_over_errors = stats0->rx_over_errors;
+ if (info->nc_queue) {
+ stats1 = &priv->stats[RAVB_NC];
+
+ nstats->rx_packets += stats1->rx_packets;
+ nstats->tx_packets += stats1->tx_packets;
+ nstats->rx_bytes += stats1->rx_bytes;
+ nstats->tx_bytes += stats1->tx_bytes;
+ nstats->multicast += stats1->multicast;
+ nstats->rx_errors += stats1->rx_errors;
+ nstats->rx_crc_errors += stats1->rx_crc_errors;
+ nstats->rx_frame_errors += stats1->rx_frame_errors;
+ nstats->rx_length_errors += stats1->rx_length_errors;
+ nstats->rx_missed_errors += stats1->rx_missed_errors;
+ nstats->rx_over_errors += stats1->rx_over_errors;
+ }
return nstats;
}
@@ -1784,12 +1813,14 @@ static int ravb_close(struct net_device *ndev)
}
free_irq(ndev->irq, ndev);
- napi_disable(&priv->napi[RAVB_NC]);
+ if (info->nc_queue)
+ napi_disable(&priv->napi[RAVB_NC]);
napi_disable(&priv->napi[RAVB_BE]);
/* Free all the skb's in the RX queue and the DMA buffers. */
ravb_ring_free(ndev, RAVB_BE);
- ravb_ring_free(ndev, RAVB_NC);
+ if (info->nc_queue)
+ ravb_ring_free(ndev, RAVB_NC);
return 0;
}
@@ -2007,7 +2038,7 @@ static const struct ravb_hw_info ravb_gen3_hw_info = {
.receive = ravb_rcar_rx,
.set_rate = ravb_set_rate,
.set_feature = ravb_set_features_rcar,
- .dmac_init = ravb_rcar_dmac_init,
+ .dmac_init = ravb_dmac_init_rcar,
.emac_init = ravb_rcar_emac_init,
.gstrings_stats = ravb_gstrings_stats,
.gstrings_size = sizeof(ravb_gstrings_stats),
@@ -2019,6 +2050,7 @@ static const struct ravb_hw_info ravb_gen3_hw_info = {
.tx_counters = 1,
.multi_irqs = 1,
.ccc_gac = 1,
+ .nc_queue = 1,
};
static const struct ravb_hw_info ravb_gen2_hw_info = {
@@ -2028,7 +2060,7 @@ static const struct ravb_hw_info ravb_gen2_hw_info = {
.receive = ravb_rcar_rx,
.set_rate = ravb_set_rate,
.set_feature = ravb_set_features_rcar,
- .dmac_init = ravb_rcar_dmac_init,
+ .dmac_init = ravb_dmac_init_rcar,
.emac_init = ravb_rcar_emac_init,
.gstrings_stats = ravb_gstrings_stats,
.gstrings_size = sizeof(ravb_gstrings_stats),
@@ -2038,6 +2070,7 @@ static const struct ravb_hw_info ravb_gen2_hw_info = {
.max_rx_len = RX_BUF_SZ + RAVB_ALIGN - 1,
.aligned_tx = 1,
.gptp = 1,
+ .nc_queue = 1,
};
static const struct of_device_id ravb_match_table[] = {
@@ -2192,8 +2225,11 @@ static int ravb_probe(struct platform_device *pdev)
priv->pdev = pdev;
priv->num_tx_ring[RAVB_BE] = BE_TX_RING_SIZE;
priv->num_rx_ring[RAVB_BE] = BE_RX_RING_SIZE;
- priv->num_tx_ring[RAVB_NC] = NC_TX_RING_SIZE;
- priv->num_rx_ring[RAVB_NC] = NC_RX_RING_SIZE;
+ if (info->nc_queue) {
+ priv->num_tx_ring[RAVB_NC] = NC_TX_RING_SIZE;
+ priv->num_rx_ring[RAVB_NC] = NC_RX_RING_SIZE;
+ }
+
priv->addr = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
if (IS_ERR(priv->addr)) {
error = PTR_ERR(priv->addr);
@@ -2323,7 +2359,8 @@ static int ravb_probe(struct platform_device *pdev)
}
netif_napi_add(ndev, &priv->napi[RAVB_BE], ravb_poll, 64);
- netif_napi_add(ndev, &priv->napi[RAVB_NC], ravb_poll, 64);
+ if (info->nc_queue)
+ netif_napi_add(ndev, &priv->napi[RAVB_NC], ravb_poll, 64);
/* Network device register */
error = register_netdev(ndev);
@@ -2341,7 +2378,9 @@ static int ravb_probe(struct platform_device *pdev)
return 0;
out_napi_del:
- netif_napi_del(&priv->napi[RAVB_NC]);
+ if (info->nc_queue)
+ netif_napi_del(&priv->napi[RAVB_NC]);
+
netif_napi_del(&priv->napi[RAVB_BE]);
ravb_mdio_release(priv);
out_dma_free:
@@ -2380,7 +2419,8 @@ static int ravb_remove(struct platform_device *pdev)
ravb_write(ndev, CCC_OPC_RESET, CCC);
pm_runtime_put_sync(&pdev->dev);
unregister_netdev(ndev);
- netif_napi_del(&priv->napi[RAVB_NC]);
+ if (info->nc_queue)
+ netif_napi_del(&priv->napi[RAVB_NC]);
netif_napi_del(&priv->napi[RAVB_BE]);
ravb_mdio_release(priv);
pm_runtime_disable(&pdev->dev);
@@ -2394,6 +2434,7 @@ static int ravb_remove(struct platform_device *pdev)
static int ravb_wol_setup(struct net_device *ndev)
{
struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
/* Disable interrupts by clearing the interrupt masks. */
ravb_write(ndev, 0, RIC0);
@@ -2402,7 +2443,8 @@ static int ravb_wol_setup(struct net_device *ndev)
/* Only allow ECI interrupts */
synchronize_irq(priv->emac_irq);
- napi_disable(&priv->napi[RAVB_NC]);
+ if (info->nc_queue)
+ napi_disable(&priv->napi[RAVB_NC]);
napi_disable(&priv->napi[RAVB_BE]);
ravb_write(ndev, ECSIPR_MPDIP, ECSIPR);
@@ -2415,9 +2457,11 @@ static int ravb_wol_setup(struct net_device *ndev)
static int ravb_wol_restore(struct net_device *ndev)
{
struct ravb_private *priv = netdev_priv(ndev);
+ const struct ravb_hw_info *info = priv->info;
int ret;
- napi_enable(&priv->napi[RAVB_NC]);
+ if (info->nc_queue)
+ napi_enable(&priv->napi[RAVB_NC]);
napi_enable(&priv->napi[RAVB_BE]);
/* Disable MagicPacket */
--
2.17.1
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