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openwrt/package/kernel/lantiq/vrx518_tc/patches/202-napi.patch
Martin Schiller 474bbe23b7 kernel: add Intel/Lantiq VRX518 TC driver 
This driver version is also included in Intel UGW 8.5.2.10.

Signed-off-by: Martin Schiller <ms.3headeddevs@gmail.com>
[updated for kernel 5.10]
Signed-off-by: Jan Hoffmann <jan@3e8.eu>
[update to 1.5.12.4, switch to tag tarball]
Signed-off-by: Andre Heider <a.heider@gmail.com>
[add working software data path]
Signed-off-by: Jan Hoffmann <jan@3e8.eu>
Signed-off-by: Andre Heider <a.heider@gmail.com>
2023-01-16 23:41:41 +00:00

424 lines
12 KiB
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--- a/dcdp/platform/sw_plat.c
+++ b/dcdp/platform/sw_plat.c
@@ -208,6 +208,8 @@ struct plat_priv {
struct tc_req req_work;
struct aca_ring_grp soc_rings;
struct net_device *netdev;
+ struct napi_struct *napi_tx;
+ struct napi_struct *napi_rx;
DECLARE_HASHTABLE(mem_map, 8);
};
@@ -472,7 +474,7 @@ err2:
return -1;
}
-static void txout_action(struct tc_priv *priv, struct aca_ring *txout)
+static int txout_action(struct tc_priv *priv, struct aca_ring *txout, int budget)
{
struct aca_ring *txin = &g_plat_priv->soc_rings.txin;
struct tx_list *txlist = &g_plat_priv->soc_rings.txlist;
@@ -490,7 +492,10 @@ static void txout_action(struct tc_priv
spin_lock_irqsave(&tx_spinlock, flags);
}
- for (i = 0; i < txout->dnum; i++) {
+ if (budget == 0 || budget > txout->dnum)
+ budget = txout->dnum;
+
+ for (i = 0; i < budget; i++) {
desc = txout->dbase_mem;
desc += txout->idx;
@@ -540,6 +545,8 @@ static void txout_action(struct tc_priv
if (cnt && g_plat_priv->netdev && netif_queue_stopped(g_plat_priv->netdev)) {
netif_wake_queue(g_plat_priv->netdev);
}
+
+ return cnt;
}
static void rxin_action(struct tc_priv *priv,
@@ -549,7 +556,7 @@ static void rxin_action(struct tc_priv *
writel(cnt, rxin->umt_dst);
}
-static int rxout_action(struct tc_priv *priv, struct aca_ring *rxout)
+static int rxout_action(struct tc_priv *priv, struct aca_ring *rxout, int budget)
{
struct device *pdev = priv->ep_dev[0].dev;
int i, cnt;
@@ -559,8 +566,11 @@ static int rxout_action(struct tc_priv *
size_t len;
struct sk_buff *skb;
+ if (budget == 0 || budget > rxout->dnum)
+ budget = rxout->dnum;
+
cnt = 0;
- for (i = 0; i < rxout->dnum; i++) {
+ for (i = 0; i < budget; i++) {
desc = rxout->dbase_mem;
desc += rxout->idx;
@@ -593,14 +603,30 @@ static int rxout_action(struct tc_priv *
ring_idx_inc(rxout);
}
- if (!cnt)
- tc_err(priv, MSG_RX, "RXOUT spurious interrupt\n");
- else
+ if (cnt)
writel(cnt, rxout->umt_dst+0x28); // RXOUT_HD_ACCUM_SUB instead of RXOUT_HD_ACCUM_ADD
return cnt;
}
+static int plat_txout_napi(struct napi_struct *napi, int budget)
+{
+ struct plat_priv *priv = g_plat_priv;
+ struct tc_priv *tcpriv = plat_to_tcpriv();
+ struct aca_ring *txout = &priv->soc_rings.txout;
+ struct dc_ep_dev *ep_dev = &tcpriv->ep_dev[txout->ep_dev_idx];
+ int cnt;
+
+ cnt = txout_action(tcpriv, txout, budget);
+
+ if (cnt < budget) {
+ if (napi_complete_done(napi, cnt))
+ ep_dev->hw_ops->icu_en(ep_dev, ACA_HOSTIF_TX);
+ }
+
+ return cnt;
+}
+
static void plat_txout_tasklet(unsigned long arg)
{
struct plat_priv *priv = g_plat_priv;
@@ -608,12 +634,33 @@ static void plat_txout_tasklet(unsigned
struct aca_ring *txout = &priv->soc_rings.txout;
struct dc_ep_dev *ep_dev = &tcpriv->ep_dev[txout->ep_dev_idx];
- txout_action(tcpriv, txout);
+ txout_action(tcpriv, txout, 0);
/* Enable interrupt */
ep_dev->hw_ops->icu_en(ep_dev, ACA_HOSTIF_TX);
}
+static int plat_rxout_napi(struct napi_struct *napi, int budget)
+{
+ struct plat_priv *priv = g_plat_priv;
+ struct tc_priv *tcpriv = plat_to_tcpriv();
+ struct aca_ring *rxout = &priv->soc_rings.rxout;
+ struct aca_ring *rxin = &priv->soc_rings.rxin;
+ struct dc_ep_dev *ep_dev = &tcpriv->ep_dev[rxout->ep_dev_idx];
+ int cnt;
+
+ cnt = rxout_action(tcpriv, rxout, budget);
+ if (cnt)
+ rxin_action(tcpriv, rxin, DMA_PACKET_SZ, cnt);
+
+ if (cnt < budget) {
+ if (napi_complete_done(napi, cnt))
+ ep_dev->hw_ops->icu_en(ep_dev, ACA_HOSTIF_RX);
+ }
+
+ return cnt;
+}
+
static void plat_rxout_tasklet(unsigned long arg)
{
struct plat_priv *priv = g_plat_priv;
@@ -623,7 +670,7 @@ static void plat_rxout_tasklet(unsigned
struct dc_ep_dev *ep_dev = &tcpriv->ep_dev[rxout->ep_dev_idx];
int cnt;
- cnt = rxout_action(tcpriv, rxout);
+ cnt = rxout_action(tcpriv, rxout, 0);
if (cnt)
rxin_action(tcpriv, rxin, DMA_PACKET_SZ, cnt);
@@ -783,11 +830,22 @@ static irqreturn_t aca_rx_irq_handler(in
{
struct dc_ep_dev *ep_dev = dev_id;
- /* Disable IRQ in IMCU */
- ep_dev->hw_ops->icu_mask(ep_dev, ACA_HOSTIF_RX);
+ if (g_plat_priv->napi_rx) {
+
+ if (napi_schedule_prep(g_plat_priv->napi_rx)) {
+ ep_dev->hw_ops->icu_mask(ep_dev, ACA_HOSTIF_RX);
+ __napi_schedule(g_plat_priv->napi_rx);
+ }
+
+ } else {
+
+ /* Disable IRQ in IMCU */
+ ep_dev->hw_ops->icu_mask(ep_dev, ACA_HOSTIF_RX);
- /* Start tasklet */
- tasklet_schedule(&rxout_task);
+ /* Start tasklet */
+ tasklet_schedule(&rxout_task);
+
+ }
return IRQ_HANDLED;
}
@@ -796,15 +854,62 @@ static irqreturn_t aca_tx_irq_handler(in
{
struct dc_ep_dev *ep_dev = dev_id;
- /* Disable IRQ in IMCU */
- ep_dev->hw_ops->icu_mask(ep_dev, ACA_HOSTIF_TX);
+ if (g_plat_priv->napi_tx) {
- /* Start tasklet */
- tasklet_schedule(&txout_task);
+ if (napi_schedule_prep(g_plat_priv->napi_tx)) {
+ ep_dev->hw_ops->icu_mask(ep_dev, ACA_HOSTIF_TX);
+ __napi_schedule(g_plat_priv->napi_tx);
+ }
+
+ } else {
+
+ /* Disable IRQ in IMCU */
+ ep_dev->hw_ops->icu_mask(ep_dev, ACA_HOSTIF_TX);
+
+ /* Start tasklet */
+ tasklet_schedule(&txout_task);
+
+ }
return IRQ_HANDLED;
}
+static void plat_net_open(void)
+{
+ struct plat_priv *priv = g_plat_priv;
+ struct tc_priv *tcpriv = plat_to_tcpriv();
+ struct aca_ring *rxout = &priv->soc_rings.rxout;
+ struct aca_ring *txout = &priv->soc_rings.txout;
+ struct dc_ep_dev *ep_dev_rx = &tcpriv->ep_dev[rxout->ep_dev_idx];
+ struct dc_ep_dev *ep_dev_tx = &tcpriv->ep_dev[txout->ep_dev_idx];
+
+ if (priv->napi_rx)
+ napi_enable(priv->napi_rx);
+ ep_dev_rx->hw_ops->icu_en(ep_dev_rx, ACA_HOSTIF_RX);
+
+ if (priv->napi_tx)
+ napi_enable(priv->napi_tx);
+ ep_dev_tx->hw_ops->icu_en(ep_dev_tx, ACA_HOSTIF_TX);
+}
+
+static void plat_net_stop(void)
+{
+ struct plat_priv *priv = g_plat_priv;
+ struct tc_priv *tcpriv = plat_to_tcpriv();
+ struct aca_ring *rxout = &priv->soc_rings.rxout;
+ struct aca_ring *txout = &priv->soc_rings.txout;
+ struct dc_ep_dev *ep_dev_rx = &tcpriv->ep_dev[rxout->ep_dev_idx];
+ struct dc_ep_dev *ep_dev_tx = &tcpriv->ep_dev[txout->ep_dev_idx];
+
+ if (priv->napi_tx)
+ napi_disable(priv->napi_tx);
+ ep_dev_tx->hw_ops->icu_mask(ep_dev_tx, ACA_HOSTIF_TX);
+
+ if (priv->napi_rx)
+ napi_disable(priv->napi_rx);
+ ep_dev_rx->hw_ops->icu_mask(ep_dev_rx, ACA_HOSTIF_RX);
+}
+
static void plat_irq_init(struct tc_priv *priv, const char *dev_name)
{
int ret;
@@ -988,17 +1093,49 @@ static int plat_soc_cfg_get(struct soc_c
}
static int plat_open(struct net_device *pdev, const char *dev_name,
+ struct napi_struct *napi_tx, struct napi_struct *napi_rx,
int id, int flag)
{
+ struct tc_priv *priv = g_plat_priv->tc_priv;
+ int i;
+
+ for (i = 0; i < EP_MAX_NUM && i < priv->ep_num; i++) {
+ disable_irq(priv->ep_dev[i].aca_rx_irq);
+ disable_irq(priv->ep_dev[i].aca_tx_irq);
+ }
+
g_plat_priv->netdev = pdev;
+ g_plat_priv->napi_tx = napi_tx;
+ g_plat_priv->napi_rx = napi_rx;
+
+ for (i = 0; i < EP_MAX_NUM && i < priv->ep_num; i++) {
+ enable_irq(priv->ep_dev[i].aca_rx_irq);
+ enable_irq(priv->ep_dev[i].aca_tx_irq);
+ }
return 0;
}
static void plat_close(struct net_device *pdev, const char *dev_name,
+ struct napi_struct *napi_tx, struct napi_struct *napi_rx,
int flag)
{
+ struct tc_priv *priv = g_plat_priv->tc_priv;
+ int i;
+
+ for (i = 0; i < EP_MAX_NUM && i < priv->ep_num; i++) {
+ disable_irq(priv->ep_dev[i].aca_rx_irq);
+ disable_irq(priv->ep_dev[i].aca_tx_irq);
+ }
+
g_plat_priv->netdev = NULL;
+ g_plat_priv->napi_tx = NULL;
+ g_plat_priv->napi_rx = NULL;
+
+ for (i = 0; i < EP_MAX_NUM && i < priv->ep_num; i++) {
+ enable_irq(priv->ep_dev[i].aca_rx_irq);
+ enable_irq(priv->ep_dev[i].aca_tx_irq);
+ }
return;
}
@@ -1084,6 +1221,10 @@ static void plat_tc_ops_setup(struct tc_
priv->tc_ops.free = plat_mem_free;
priv->tc_ops.dev_reg = plat_open;
priv->tc_ops.dev_unreg = plat_close;
+ priv->tc_ops.net_open = plat_net_open;
+ priv->tc_ops.net_stop = plat_net_stop;
+ priv->tc_ops.napi_tx = plat_txout_napi;
+ priv->tc_ops.napi_rx = plat_rxout_napi;
priv->tc_ops.umt_init = plat_umt_init;
priv->tc_ops.umt_exit = plat_umt_exit;
priv->tc_ops.umt_start = plat_umt_start;
--- a/dcdp/atm_tc.c
+++ b/dcdp/atm_tc.c
@@ -3650,7 +3650,7 @@ static void atm_aca_ring_config_init(str
static int atm_ring_init(struct atm_priv *priv)
{
atm_aca_ring_config_init(priv);
- return priv->tc_priv->tc_ops.dev_reg(NULL, g_atm_dev_name, 0, 0);
+ return priv->tc_priv->tc_ops.dev_reg(NULL, g_atm_dev_name, NULL, NULL, 0, 0);
}
static int atm_init(struct tc_priv *tcpriv, u32 ep_id)
@@ -4020,7 +4020,7 @@ void atm_tc_unload(void)
/* unregister device */
if (priv->tc_priv->tc_ops.dev_unreg != NULL)
priv->tc_priv->tc_ops.dev_unreg(NULL,
- g_atm_dev_name, 0);
+ g_atm_dev_name, NULL, NULL, 0);
/* atm_dev_deinit(priv); */
/* modem module power off */
--- a/dcdp/inc/tc_main.h
+++ b/dcdp/inc/tc_main.h
@@ -209,9 +209,15 @@ struct tc_hw_ops {
void (*subif_unreg)(struct net_device *pdev, const char *dev_name,
int subif_id, int flag);
int (*dev_reg)(struct net_device *pdev, const char *dev_name,
+ struct napi_struct *napi_tx, struct napi_struct *napi_rx,
int id, int flag);
void (*dev_unreg)(struct net_device *pdev, const char *dev_name,
+ struct napi_struct *napi_tx, struct napi_struct *napi_rx,
int flag);
+ void (*net_open)(void);
+ void (*net_stop)(void);
+ int (*napi_tx)(struct napi_struct *napi, int budget);
+ int (*napi_rx)(struct napi_struct *napi, int budget);
/*umt init/exit including the corresponding DMA init/exit */
int (*umt_init)(u32 umt_id, u32 umt_period, u32 umt_dst);
--- a/dcdp/ptm_tc.c
+++ b/dcdp/ptm_tc.c
@@ -141,7 +141,11 @@ static int ptm_open(struct net_device *d
struct ptm_priv *ptm_tc = netdev_priv(dev);
tc_info(ptm_tc->tc_priv, MSG_EVENT, "ptm open\n");
+
+ ptm_tc->tc_priv->tc_ops.net_open();
+
netif_tx_start_all_queues(dev);
+
#ifdef CONFIG_SOC_TYPE_XWAY
xet_phy_wan_port(7, NULL, 1, 1);
if (ppa_hook_ppa_phys_port_add_fn)
@@ -158,7 +162,11 @@ static int ptm_stop(struct net_device *d
struct ptm_priv *ptm_tc = netdev_priv(dev);
tc_info(ptm_tc->tc_priv, MSG_EVENT, "ptm stop\n");
+
netif_tx_stop_all_queues(dev);
+
+ ptm_tc->tc_priv->tc_ops.net_stop();
+
#ifdef CONFIG_SOC_TYPE_XWAY
if (ppa_drv_datapath_mac_entry_setting)
ppa_drv_datapath_mac_entry_setting(dev->dev_addr, 0, 6, 10, 1, 2);
@@ -555,7 +563,7 @@ static void ptm_rx(struct net_device *de
ptm_tc->stats64.rx_packets++;
ptm_tc->stats64.rx_bytes += skb->len;
- if (netif_rx(skb) == NET_RX_DROP)
+ if (netif_receive_skb(skb) == NET_RX_DROP)
ptm_tc->stats64.rx_dropped++;
return;
@@ -651,6 +659,9 @@ static int ptm_dev_init(struct tc_priv *
memcpy(ptm_tc->outq_map, def_outq_map, sizeof(def_outq_map));
SET_NETDEV_DEV(ptm_tc->dev, tc_priv->ep_dev[id].dev);
+ netif_napi_add(ptm_tc->dev, &ptm_tc->napi_rx, tc_priv->tc_ops.napi_rx, NAPI_POLL_WEIGHT);
+ netif_tx_napi_add(ptm_tc->dev, &ptm_tc->napi_tx, tc_priv->tc_ops.napi_tx, NAPI_POLL_WEIGHT);
+
err = register_netdev(ptm_tc->dev);
if (err)
goto err1;
@@ -2605,7 +2616,9 @@ static int ptm_ring_init(struct ptm_ep_p
{
ptm_aca_ring_config_init(priv, id, bonding);
return priv->tc_priv->tc_ops.dev_reg(priv->ptm_tc->dev,
- priv->ptm_tc->dev->name, id, bonding);
+ priv->ptm_tc->dev->name,
+ &priv->ptm_tc->napi_tx, &priv->ptm_tc->napi_rx,
+ id, bonding);
}
/**
@@ -2960,7 +2973,9 @@ void ptm_tc_unload(enum dsl_tc_mode tc_m
/* unregister device */
if (ptm_tc->tc_priv->tc_ops.dev_unreg != NULL)
ptm_tc->tc_priv->tc_ops.dev_unreg(ptm_tc->dev,
- ptm_tc->dev->name, 0);
+ ptm_tc->dev->name,
+ &priv->ptm_tc->napi_tx, &priv->ptm_tc->napi_rx,
+ 0);
/* remove PTM callback function */
ptm_cb_setup(ptm_tc, 0);
@@ -2978,6 +2993,10 @@ void ptm_exit(void)
if (!priv)
return;
+
+ netif_napi_del(&priv->napi_tx);
+ netif_napi_del(&priv->napi_rx);
+
unregister_netdev(priv->dev);
free_netdev(priv->dev);
--- a/dcdp/inc/ptm_tc.h
+++ b/dcdp/inc/ptm_tc.h
@@ -119,6 +119,8 @@ struct ptm_priv {
u32 ep_id;
struct ppe_fw fw;
struct net_device *dev;
+ struct napi_struct napi_tx;
+ struct napi_struct napi_rx;
spinlock_t ptm_lock;
struct rtnl_link_stats64 stats64;
int subif_id;
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